阅读说明：本技术 一种用于液体内部的小型循环过滤装置结构 (Small-sized circulating filter device structure used inside liquid ) 是由 李剑虹 孙源秀 蔡家铁 隽昌永 陶琛 于 2021-03-01 设计创作，主要内容包括：一种用于液体内部的循环过滤装置结构,其通过螺纹外接于中上侧部带有排水口的泵体底部,主要部件由螺纹接头、抽吸筒、收集筒、挤压筒、脱水筒和杂质外排管构成,还包括环圈阀门、磁悬浮轨道和旋转轨、传送履带以及包括滤片和滤膜等过滤介质等附属结构和配件。整套装置外接泵体浸没于养殖水体环境中,含有粪便和残余饵料等悬浮固体杂质的水借助泵体负压被吸入抽吸筒经过滤分离,净化后的水经泵体排出；被截留的杂质经收集筒沉降、挤压筒脱水、注胶成型以及脱水筒二次脱水成为杂质块体,经传送履带由外排管排出。该装置不存在过滤介质堵塞的问题而无需设置反冲洗部件,排出的杂质块体作为土壤肥料待利用。装置构件简单,利于维护和维修。(A circulating filter structure for the liquid is composed of a pump body with water outlet on its upper middle part, a screwed joint, a sucking tube, a collecting tube, a squeezing tube, a dewatering tube, an impurity discharging tube, a ring valve, a magnetic suspension track, a rotary track, a conveying track, and the filter medium including filter disc and filter membrane. The whole device is externally connected with a pump body and immersed in the culture water body environment, water containing suspended solid impurities such as excrement, residual bait and the like is sucked into a suction cylinder by virtue of the negative pressure of the pump body and is filtered and separated, and the purified water is discharged by the pump body; the intercepted impurities are settled by the collecting cylinder, dehydrated by the extruding cylinder, molded by glue injection and secondarily dehydrated by the dehydrating cylinder to form impurity blocks which are discharged by an external discharge pipe through the conveying crawler belt. The device does not have the problem of filter medium jam and need not to set up back flush part, and the impurity block of discharging waits to utilize as soil fertilizer. The device has simple components and is beneficial to maintenance and repair.)

1. A circulating filter device structure used in liquid is externally connected to the bottom of a pump body with a water outlet at the middle upper side part through threads, and the main components of the circulating filter device structure comprise a threaded joint, a suction cylinder, a collecting cylinder, an extrusion cylinder, a dewatering cylinder and an impurity discharge pipe, and also comprise a ring valve, a magnetic suspension track, a rotating track, a conveying track, auxiliary structures and accessories comprising filter media such as filter discs, filter membranes and the like; the whole device and the external pump body are immersed in the culture water body environment, and the pump body is operated intermittently; the pump body is started to form negative pressure, so that water containing suspended solid impurities such as excrement, residual bait and the like in the aquaculture water body enters the device through the side wall of the suction cylinder, the filtered and separated purified water is discharged from a discharge port of the pump body and enters the external water environment of the device, and the suspended solid impurities such as the excrement, the residual bait and the like are intercepted in the suction cylinder and freely settled in the collection cylinder under the action of gravity when the pump body stops; controlling the opening and closing of an annular valve at the end face of the collecting barrel to introduce settled suspended solid impurities into the extrusion barrel for dehydration and glue injection molding; and controlling the opening and closing of the expansion port on the end surface of the dewatering cylinder to introduce the impurity block formed by glue injection into the dewatering cylinder for secondary dewatering to be used as soil fertilizer, and discharging the impurity block through an impurity outer discharge pipe by means of the conveying crawler.

2. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the main components of the device are a threaded joint, a suction cylinder, a collecting cylinder, an extrusion cylinder and a dewatering cylinder which are connected from top to bottom and have the same central axis; the impurity outer discharge pipe is an L-shaped 90-degree right-angle pipe, and a straight pipe section on one side of the impurity outer discharge pipe, the threaded joint, the suction cylinder, the collecting cylinder, the extrusion cylinder and the dewatering cylinder have the same central axis.

3. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the ring valves are totally three in the device, namely a ring valve I, a ring valve II and a ring valve III; the annular valve I is arranged at the joint of the fixed end of the extrusion cylinder and the collecting cylinder, the annular valve II is arranged at the joint of the telescopic end of the extrusion cylinder and the dewatering cylinder, and the annular valve III is arranged at the joint of the bottom surface of the dewatering cylinder and the impurity outer discharge pipe; the ring valves I, II and III have the same structure and materials and are respectively composed of a sealing silica gel ring frame and a corrugated high-elastic compression-resistant silica gel ring group; the sealing silica gel ring frame is a circular silica gel ring internally connected with a cross slide rail, and the silica gel ring group consists of four silica gel corrugated folding fan units with 90-degree fan angles; when the folding fan unit is in the maximum stretching state, the fan surfaces of the folding fan unit in the four fan-shaped spaces of the cross slide rail just form a closed circular surface; when the folding fan units are controlled to be folded, all the folding fan unit sectors in the four sector spaces of the cross slide rail are folded towards the sector arc side, namely, the folding fan units are folded towards the circular silica gel ring side of the sealing silica gel ring frame, and the four folding fan unit sectors in the maximum folding state just form a hollow circular ring surface; the ring valves at different positions in the device are structurally composed of the sealing silica gel ring frame and the corrugated high-elasticity compression-resistant silica gel ring group, so that the device and the ring valves are guaranteed to have better sealing performance, and the sealing performance is guaranteed through connection between the folding fan unit and the cross slide rail which form the silica gel ring group.

4. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the magnetic suspension track is circular, is integrally connected with the connecting part of the sealing silica gel ring frame of the annular valve II at the bottom surface of the telescopic end of the extrusion container and the bottom surface of the telescopic end of the extrusion container, and is positioned below the annular valve II; the rotating rail matched with the magnetic suspension rail is integrally formed and connected to the circular circumference of the central annulus on the top surface of the dewatering cylinder; the magnetic suspension track ensures that a rotating track on the end face of the dewatering drum below the extrusion drum in the device performs medium and high speed centrifugal rotation.

5. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the main components have better sealing performance, the extrusion cylinder and the dewatering cylinder in the device form dynamic connection by a magnetic suspension track and a rotating track, and other main components are integrally formed and connected; the inner side wall of one end socket at one side of the threaded joint is integrally formed and connected with the outer side wall of the top end socket of the suction cylinder; the bottom surface of the suction cylinder which is also circular is the same as the top surface of the collection cylinder in size and is integrally formed and connected; the bottom surface of the suction cylinder which is also circular is the same as the top surface of the collection cylinder in size and is integrally formed and connected; the bottom surface of the collecting barrel which is also circular is the same as the top surface of the fixed end of the extrusion barrel in size and is integrally connected with the top surface of the fixed end of the extrusion barrel in a forming way; the bottom surface of the fixed end of the extrusion container is integrally formed and connected with the top surface of the telescopic end of the extrusion container; the inner side wall of the end socket of the bottom surface of the dewatering cylinder is integrally formed and connected with the outer side wall of the impurity discharging pipe; the dewatering cylinder rotating rail is embedded into the extrusion cylinder magnetic suspension rail and the sealing performance of the device is guaranteed, namely, the external aquaculture water body cannot enter the device at the connecting position of the rotating rail and the magnetic suspension rail.

6. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the suction cylinder is an annular cylinder with certain side wall thickness, hollow pore channels penetrating through a side wall entity are uniformly distributed along the circumference of the cross section of the annular cylinder at different distances in the length direction of the side wall cylinder, the pore channels form a downward inclination angle from the outer wall surface to the inner wall surface of the annular cylinder, and the inner diameter of the pore channels is gradually reduced, namely the hollow pore channels with large outer holes and small inner holes and inclined downwards from outside to inside are uniformly distributed in the solid side wall of the whole annular cylinder with certain thickness; the hollow pore channel constructs a channel for the aquaculture water body outside the device, wherein the channel is used for effectively sucking water containing suspended solid impurities into the suction cylinder under the action of negative pressure generated by the pump body above the suction cylinder in working, and simultaneously, the problem that the suspended solid impurities in the suction cylinder flow back out of the device in the free settling process under the non-working state of the pump body above the suction cylinder is effectively avoided.

7. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the extrusion container is divided into a fixed end and a telescopic end, and the two parts are both of hollow structures; the fixed end of the extrusion cylinder is a hollow annular cylinder, the side wall surface of the fixed end of the annular cylinder is provided with a certain length and is made of rigid solid material, and a circular gel injection port is arranged on the outer side wall surface of the solid side wall of the fixed end of the annular cylinder, which is close to the collecting cylinder; the telescopic end of the extrusion cylinder is a hollow ring cylinder body of which the inner wall surface and the outer wall surface are both anti-impact corrugated stacked filter membranes, and the corrugated stacked filter membranes can extend and shorten along the central axis direction of the extrusion cylinder under the control operation; the gel injection port penetrating through the side wall surface of the fixed end of the extrusion container is provided with a gel injection bent pipe with an elbow of 90 degrees or 135 degrees, straight line sections at two ends of the elbow are respectively communicated with the outer side wall surface of the solid side wall of the fixed end of the annular cylinder and the end surface of the integrated connection of the fixed end of the annular cylinder and the telescopic end of the annular cylinder, and the connection ports of the bent pipe and the contact surface of the bent pipe and the solid side wall of the fixed end of the annular cylinder are sealed; a gel injection storage area in the device is arranged between the inner and outer corrugated stacked filter membrane wall surfaces of the telescopic end of the extrusion cylinder, namely, the gel injection bent pipe becomes a channel for allowing gel to enter the gel injection storage area of the telescopic end of the extrusion cylinder from the outside of the device through the inside of the side wall of the fixed end of the extrusion cylinder, and the solid side wall of the fixed end of the annular cylinder body avoids the problems of extrusion and corrosion damage of the gel bent pipe.

8. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the dewatering cylinder is a hollow annular cylinder, the inner side wall and the outer side wall of the dewatering cylinder are filter membranes, and a light macroporous structure masonry material is filled between the inner side wall and the outer side wall; the annular column light macroporous structure masonry material side wall filler has certain thickness along the radial direction of the dewatering cylinder; the light macroporous structure masonry material is used as a filling body of the side wall to reduce the weight of the dewatering cylinder to the maximum extent so as to ensure that the dewatering cylinder rotates at medium and high speed in a working state.

9. A circulation filter arrangement for the interior of liquids as claimed in claim 1, wherein: the filter medium comprises a filter disc and a filter membrane and is positioned in different parts in the device; the filter disc is positioned in an internal hollow area at the joint of the suction cylinder and the threaded joint, when the pump body works, solid-liquid separation is carried out on water containing suspended solid impurities such as excrement, residual bait and the like, the impurities are intercepted on a filter surface facing one side inside the suction cylinder under the negative pressure suction force of the pump body, and the purified water enters the inside of the pump body through the filter disc and is discharged into a culture water body environment outside the device through a water outlet at the upper side part of the pump body; the corrugated stacked filter membranes positioned on the inner side wall surface and the outer side wall surface of the telescopic end of the extrusion cylinder are all one-way check filter membranes which only allow water to flow to the outer side of the filter membrane from the one-way permeation filter membrane on the inner side of the filter membrane and gel injection agent to flow to the inner side of the filter membrane from the one-way permeation filter membrane on the outer side of the filter membrane, the filter membranes are controlled by a heating system to help the gel to permeate the pores of the filter membrane, the inner side and the outer side of the corrugated stacked filter membranes on the outer side of the telescopic end of the extrusion cylinder are respectively a gel injection agent storage area between the inner side wall and the outer side wall of the telescopic end of the extrusion cylinder and a culture water environment, the corrugated stacked filter membranes only allow water to flow to the outer side of the filter membrane from the one-way permeation filter membrane on the inner side of the filter membrane and do not allow the gel injection agent to, the gel injection agent in the gel injection agent storage area between the inner side wall and the outer side wall of the telescopic end of the extrusion cylinder can enter a hollow area inside the telescopic end of the annular cylinder body of the extrusion cylinder through the corrugated stacking filter membrane inside the telescopic end of the extrusion cylinder, and in the process that the water content of the hollow area is gradually reduced, cross-linked woven meshes are formed among gaps and gaps of suspended solid impurities such as excrement, residual bait and the like and are gradually compacted and solidified to form impurity blocks; the filter membranes positioned on the inner side wall surface and the outer side wall surface of the dewatering cylinder, namely the inner side wall surface and the outer side wall surface of the annular column light macroporous structure masonry material side wall filling body are the non-return filter membranes with one-way water permeability, and only water is allowed to be discharged into the culture environment water body from the hollow area inside the dewatering cylinder through the dewatering cylinder side wall filling body.

Technical Field

The invention relates to a small circulating filter device structure used in liquid, in particular to a device structure which can extract liquid containing impurities by means of negative pressure in a pump body, the impurities are intercepted by a device filter disc and discharged outside after extrusion dehydration and glue injection molding, and the purified liquid can be circulated. The device structure links to each other and submergence in liquid through outer spiral mouth and the pump body, belongs to liquid edulcoration and purification field.

Background

The circulating water treatment technology is widely applied to the fields of aquaculture, seawater algae removal, heating, pharmacy, soil washing and purification, meat washing and the like in the industries of agriculture, forestry, animal husbandry, subsidiary industry and fishery, and the treatment equipment mainly adopts the filtration principle to remove impurities and selects a corresponding treatment process and a corresponding filter medium according to the physicochemical properties of the impurities in the liquid.

At present, the water treatment objects of aquaculture systems and domestic aquatic animal culture systems are mainly granular and strip-shaped suspended solids in water bodies. In order to ensure a good water quality environment for aquatic animals and to achieve the maximum economy of circulating water, research and development and design of various circulating water filtration and purification system devices have become a major concern of researchers in this field.

Although the complexity of circulating water purification system devices and equipment is different under different culture system scales, the principles of physical interception, filtration and separation, such as grating, screen mesh, sand filter, micro-filter, membrane separation and the like, are adopted. During operation of the device and the equipment, the filtered impurities are mainly feces and residual baits of aquatic animals, and different backwashing methods are adopted by comprehensively considering the problems of the quantity of the impurities, the impurity discharge mode, whether the impurities are reused and the like so as to avoid the influence on the filtering effect caused by the blockage of a filtering medium. Thus, the contradiction between the continuous purification effect and the recycling of the water quality and the complexity of the device and equipment is generated.

Disclosure of Invention

The invention provides a small-sized circulating filter device structure used in liquid in an aquaculture system by combining the circulating water purification effect, the number and the discharge mode of filtered impurities and the problem of recycling of the impurities, and a back washing component is not needed because the problem of filter medium blockage does not exist; the filtered impurities are extruded, dehydrated and injected into the glue to form a block, so that the block is discharged outside and can be reused as soil fertilizer.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a small circulating filter device structure used in liquid is installed at the bottom of a pump body with a water outlet at the upper middle part through threaded connection, and each part of the device structure mainly comprises a threaded joint, a suction cylinder, a collecting cylinder, an extrusion cylinder, a dewatering cylinder and an impurity discharge pipe which are all provided with the same central axis from top to bottom. In addition to this. The device also comprises a ring valve, a magnetic suspension track, a rotating track, a conveying crawler belt, auxiliary structures and accessories such as filter media including filter discs, filter membranes and the like. And (5) intermittently starting the pump body. When the pump body is opened, water containing suspended solid impurities such as excrement, residual bait and the like in the aquaculture water body enters the device through the side wall of the suction cylinder, and purified water is discharged to the external water body environment of the device through the discharge port of the pump body under the separation action of the filter medium; suspended solid impurities such as excrement, residual bait and the like are intercepted in the suction cylinder and freely settle in the collection cylinder under the action of gravity when the pump body stops; controlling the opening and closing of an annular valve at the end face of the collecting barrel, and introducing settled suspended solid impurities into the extrusion barrel for dehydration and glue injection molding; the opening and closing of the expansion port on the end face of the dewatering cylinder are controlled, and after the impurity block formed by glue injection is introduced into the dewatering cylinder to be dewatered for the second time, the impurity block of soil fertilizer can be used as the impurity block of the soil fertilizer and is discharged through the impurity outer discharge pipe by virtue of the conveying crawler belt.

The threaded joint is a hollow ring cylinder, the end face of the threaded joint is circular, the side face of the threaded joint is provided with external threads, and the threaded joint is connected to the bottom of a pump body with a water outlet at the middle upper side part through threads. The threaded connector is not connected with the end face side of the pump body, and the inner wall of the end port of the threaded connector is integrally connected with the outer wall of the annular-cylinder-shaped suction barrel in a forming mode in a certain length.

The suction cylinder is a hollow annular cylinder with a certain side wall thickness, and has the same central axis with the threaded joint. Hollow ducts penetrating through a side wall entity are uniformly distributed along the circumference of the cross section of the ring cylinder body at different distances in the length direction of the cylindrical surface of the ring cylinder body, the ducts form a downward inclined angle from the outer wall surface to the inner wall surface of the ring cylinder body, and the inner diameter of the ducts is gradually reduced, namely, inclined downward hollow ducts with large outer holes and small inner holes are uniformly distributed in the solid side wall with certain thickness of the whole ring cylinder body, so that water containing suspended solid impurities such as excrement, residual bait and the like in aquaculture water enters a passage of a hollow area in the suction cylinder, and the impurities are favorably sucked through a large-aperture orifice on the outer wall surface of the suction cylinder under the negative pressure suction force of the pump body on the upper part of the suction cylinder and enter one side of; when the pump body stops working, the small-aperture orifice on the inner wall surface of the suction cylinder and the pore channel which is inclined upwards from the inner wall surface of the annular cylinder body to the outer wall surface effectively prevent impurities from flowing back to the culture water body outside the device through the orifice on the inner wall surface through the channel. Two end faces vertical to the central axis of the ring cylinder body are circular ring surfaces, the outer wall of one side end face is integrally formed and connected with the inner wall of the port of the end face side of the pump body which is not connected with the threaded connector in a certain length, a circular filter disc is arranged in the hollow area inside the suction cylinder at the joint of the suction cylinder and the threaded connector, and the circumference of the filter disc and the inner side wall of the suction cylinder are sealed; the annular surface of the other side end surface is integrally connected with the annular surface of the large-opening end surface of the collecting cylinder in a forming way. The filter disc in the hollow area at the connection part of the suction cylinder and the threaded joint is used for performing solid-liquid separation on water containing suspended solid impurities such as excrement, residual bait and the like when the pump body works, the impurities are intercepted on a filter surface facing one side in the suction cylinder under the negative pressure suction force of the pump body, and the purified water enters the pump body through the filter disc and is discharged into the culture water body environment outside the device through a water discharge port at the upper side part in the pump body; when the pump body stops working, impurities trapped on the filtering surface on one side facing the interior of the suction cylinder settle downwards in a free falling mode under the action of gravity, and the filter disc does not need to be backwashed to prevent the filter disc from being blocked. Therefore, the intermittent operation of the pump body, the filter disc in the suction cylinder and the specific side wall hollow pore passage can not only realize the effective separation of suspended solid impurities such as excrement, residual bait and the like from water, but also simplify the structure and components of the device because the problems of filter disc backwashing and impurity backflow out of the device are not involved.

The collecting cylinder is a hollow inverted cone frustum with certain side wall thickness, and has the same central axis with the threaded joint and the suction cylinder. Two end faces perpendicular to the central axis of the inverted cone are circular ring faces with a larger size and a smaller size, the circular ring face of the large-opening end face of the inverted cone is in the same size and integrally formed and connected with the circular ring face of the end face of one side, which is not connected with the threaded joint, of the suction barrel, and the circular ring face of the small-opening end face of the inverted cone is in the same size and integrally formed and connected with the circular ring face of the end face of the fixed end of. The side wall thickness of the hollow inverted cone frustum is the same or gradually reduced from the large-opening end surface of the collecting cylinder to the small-opening end surface thereof.

The extrusion cylinder, the threaded joint, the suction cylinder and the collection cylinder have the same central axis. The extrusion cylinder is divided into a fixed end and a telescopic end, and the two parts are both of a hollow structure and are provided with vertical end faces which are the same as the small-opening end faces of the collecting cylinder in the direction perpendicular to the central axis. The fixed end of the extrusion cylinder is a hollow annular cylinder, the side wall surface of the fixed end of the annular cylinder is provided with a certain length and is made of rigid solid material, and a circular gel injection port is arranged on the outer side wall surface of the solid side wall of the fixed end of the annular cylinder, which is close to the collecting cylinder; in the direction perpendicular to the central axis, one side end face of the fixed end of the ring cylinder body is integrally connected with the small-opening end face of the collecting cylinder, a controllable ring valve I is arranged at the joint, and the other side end face is integrally connected with the end face of one side of the telescopic end. The telescopic end of the extrusion cylinder is a hollow ring cylinder body of which the inner wall surface and the outer wall surface are both anti-impact corrugated stacked filter membranes, and the corrugated stacked filter membranes can extend and shorten along the central axis direction of the extrusion cylinder under the control operation; in the direction of the central axis, the telescopic end of the ring column body and the fixed end of the ring column body have the same projection; in the direction perpendicular to the central axis, one side end face of the telescopic end of the ring cylinder body is in the same size with one side end face of the non-connected collecting cylinder at the fixed end of the extruding cylinder and is integrally formed and connected, and the other side end face, facing the end face of the dewatering cylinder, is provided with a controllable ring valve II and is integrally formed with a magnetic suspension track. The ring valve I of the integrated forming junction of the fixed end of the extrusion cylinder and the small-opening end face of the collecting cylinder and the ring valve II of the telescopic end of the extrusion cylinder face the end face of the dewatering cylinder, the two are completely the same in structure and material and are formed by a sealing silica gel ring frame and a corrugated high-elastic pressure-resistant silica gel ring group, the sealing silica gel ring frame is a circular silica gel ring internally connected with a cross slide rail, and the corrugated high-elastic pressure-resistant silica gel ring group is formed by four silica gel corrugated folding fan units with 90-degree fan angles. The folding fan unit after the tiling is tensile is square, is the structure that has high-elastic ripple silica gel tectorial membrane between the parallel flexible spring metal broken bone of equidistant and the outer parcel of broken bone, and spring metal broken bone and the folding syntropy of silica gel tectorial membrane ripple have tensile and compression capacity, and the folding fan unit is assembled and is cut apart out the fan-shaped space that the fan angle is 90 degrees at leakproofness silica gel circle frame cross slide rail. Under the device control system, the folding fan unit can stretch and fold along the cross slide rail, the base lines of stretching and folding are all circular silica gel rings of the sealing silica gel ring frame, and the sealing performance is ensured by the connection between the folding fan unit and the cross slide rail. When the folding fan unit is in the maximum stretching state, the fan surfaces of the folding fan unit in the four fan-shaped spaces of the cross-shaped slide rail just form a closed circular surface, so that the water containing suspended solid impurities such as excrement, residual bait and the like in the space above the folding fan unit is well supported; when the folding fan unit is controlled to be folded, all folding fan unit sectors in four sector spaces of the cross slide rail are folded towards the side of the sector arc line, namely, the folding fan unit sectors are folded towards the side of the circular silica gel ring of the sealing silica gel ring frame, the four folding fan unit sectors in the maximum folding state just form a hollow circular ring surface, the circular ring surface is narrowest to ensure the maximization of a hollow area, the folding fan unit is controlled to be folded, and good drainage of water containing suspended solid impurities such as excrement, residual bait and the like borne by the space above the folding fan unit is realized.

The gel injection port penetrating through the side wall surface of the fixed end of the extrusion container is provided with a gel injection bent pipe with an elbow of 90 degrees or 135 degrees, straight line sections at two ends of the elbow are respectively communicated with the outer side wall surface of the solid side wall of the fixed end of the annular cylinder and the end surface of the integrated molding connection of the fixed end of the annular cylinder and the telescopic end of the annular cylinder, and the connection ports of the bent pipe and the contact surface of the bent pipe and the solid side wall of the fixed end of the annular cylinder are sealed; a gel injection storage area in the device is arranged between the inner and outer corrugated stacked filter membrane wall surfaces of the telescopic end of the extrusion cylinder, namely, the gel injection bent pipe becomes a channel for allowing gel to enter the gel injection storage area of the telescopic end of the extrusion cylinder from the outside of the device through the inside of the side wall of the fixed end of the extrusion cylinder, and the solid side wall of the fixed end of the annular cylinder body avoids the problems of extrusion and corrosion damage of the gel bent pipe.

The wall surfaces of the corrugated stacked filter membranes at the inner side and the outer side of the telescopic end of the extrusion cylinder are all one-way check filter membranes. The inner side and the outer side of the corrugated stacked filter membrane at the telescopic end of the extrusion container are respectively a hollow area inside the telescopic end of the annular cylinder body of the extrusion container and a gel injection storage area between the inner side wall and the outer side wall of the telescopic end of the extrusion container, the corrugated stacked filter membrane only allows water to flow to the outer side of the filter membrane from the inner side of the filter membrane in a one-way permeation way and gel injection to flow to the inner side of the filter membrane from the outer side of the filter membrane in a one-way permeation way, and the filter membrane can be controlled and heated; the inner side and the outer side of the corrugated stacking filter membrane at the outer side of the telescopic end of the extrusion cylinder are respectively a gel injection storage area and a culture water body environment between the inner side wall and the outer side wall of the telescopic end of the extrusion cylinder, and the corrugated stacking filter membrane only allows water to flow from the inner side of the filter membrane to the outer side of the filter membrane in a one-way mode, but does not allow gel injection to penetrate through the filter membrane from any direction. Namely, water can only flow from a hollow area inside the telescopic end of the annular cylinder body of the extrusion cylinder at the inner side of the inner side filter membrane, pass through the corrugated stacking filter membrane at the inner side of the telescopic end of the extrusion cylinder, pass through a gel injection storage area between the inner side wall and the outer side wall of the telescopic end of the extrusion cylinder, flow to the culture water environment outside the device through the corrugated stacking filter membrane at the outer side of the telescopic end of the extrusion cylinder, and cannot flow reversely; and the gel injection agent in the gel injection agent storage area between the inner side wall and the outer side wall of the telescopic end of the extrusion container can enter the hollow area inside the telescopic end of the annular cylinder body of the extrusion container through the corrugated stacking filter membrane on the inner side of the telescopic end of the extrusion container. In the process that the water content of the hollow area is gradually reduced, cross-linked woven nets are gradually formed among gaps and gaps of suspended solid impurities such as excrement, residual bait and the like, and the gaps are gradually compacted and solidified to form impurity blocks; when the moisture content of impurity block reduces and reaches operating condition, open the flexible end of recipient and towards the ring valve II of dehydration section of thick bamboo terminal surface, discharge the impurity block to the operating region of dehydration section of thick bamboo and carry out further dehydration. The flexible end of ring cylinder body is circular towards the magnetic suspension track on the dehydration section of thick bamboo terminal surface, is located the below of the flexible end ring valve II leakproofness silica gel circle frame of ring cylinder body, and integrated shaping connects in ring valve II leakproofness silica gel circle frame and the flexible end of ring cylinder body handing-over department towards the dehydration section of thick bamboo terminal surface, and this magnetic suspension track carries out well, high-speed centrifugal rotation on it with the dehydration section of thick bamboo terminal surface track of guaranteeing to lie in the extrusion section of thick bamboo below in the device.

The dewatering cylinder, the screwed joint, the suction cylinder, the collecting cylinder and the extrusion cylinder have the same central axis. The dewatering cylinder is a hollow annular column body with the side wall filled with light large-hole structure masonry materials, and the light large-hole structure masonry materials are used as the filling body of the side wall, so that the weight of the dewatering cylinder can be reduced as much as possible to ensure that the dewatering cylinder rotates at medium and high speed in a working state; the hollow area inside the dewatering cylinder is an operation area for further dewatering treatment of the impurity blocks discharged by the operation treatment of the extrusion cylinder. Two end faces of the annular cylinder body dewatering cylinder are both annular, the inner side wall of one end face is integrally formed and connected with the pipe wall of the impurity outer discharge pipe, and a controllable annular valve III with the same material, structure, function and the like as the annular valves arranged on the two end faces of the extrusion cylinder is arranged at the connection position; and the other one of the rotary rails is integrally connected with a rotary rail matched with the extrusion cylinder telescopic end magnetic suspension rail towards the circumference of the central annulus on the end face of the extrusion cylinder, and the rotary rail of the dewatering cylinder is embedded into the extrusion cylinder magnetic suspension rail to ensure the sealing property of the device, namely, the external aquaculture water body can not enter the device at the joint of the rotary rail and the magnetic suspension rail. When the ring valve III is closed, the dewatering cylinder under the device control system rotates 360 degrees on the magnetic suspension track, the impurity blocks discharged by the operation treatment of the extrusion cylinder are centrifugally separated in the hollow area in the dewatering cylinder to be further dewatered, and the dewatered moisture can not flow back. Along the dewatering cylinder is radial, the annular column light macroporous structure masonry material side wall filler has certain thickness, and the inside and outside wall of the filler, namely the inside and outside wall of the hollow annular cylinder dewatering cylinder, are non-return filter membranes with one-way water permeability, and only allow water to be discharged into the aquaculture environment water body from the hollow area inside the dewatering cylinder through the dewatering cylinder side wall filler.

The impurity outer discharge pipe is an L-shaped 90-degree right-angle pipe, one side straight pipe section of the impurity outer discharge pipe, the threaded joint, the suction cylinder, the collection cylinder, the extrusion cylinder and the dewatering cylinder are provided with the same central axis, the end head of the side straight pipe faces the dewatering cylinder, the side wall of the end head is integrally connected with the inner side wall of the end head of the dewatering cylinder of the annular cylinder body in a forming mode, and the outer circumference of the pipe section is equal to the circumference of the; the inside below of its opposite side straight tube section tiling has the circulation to convey the track, will follow the impurity block that dewatering cylinder ring valve III discharged moisture content is lower and convey the device outside and wait to do soil fertilizer and utilize, and the outer circumference of this side straight tube section is greater than dewatering cylinder inside wall circumference to guarantee that the inside of the tube section of the outer track top of conveying impurity block row has sufficient space in order to satisfy the conveying of impurity block, be unlikely to block up the block card in the pipeline section.

Compared with the prior art, the invention sucks water containing suspended solid impurities such as feces, residual baits and the like in the culture water system into the device to be treated through the side wall pore passage of the suction cylinder of the device by means of the intermittent operation of the pump body, and the special side wall pore passage of the suction cylinder effectively prevents the suspended solid impurities which enter the device from reflowing to flow back to the culture water environment outside the device; the water containing suspended solid impurities entering the device to be treated is subjected to free settling in the collecting barrel, extrusion dehydration and glue injection molding in the extruding barrel and further dehydration in the dehydrating barrel, the separation of the suspended solid impurities such as excrement, residual bait and the like in the culture water system from the water is realized by utilizing filter media such as filter sheets, filter membranes and the like, and the separated suspended solid impurities can be injected into cylindrical impurity blocks to be utilized as soil fertilizers; the whole set of device does not need back flushing of the filter medium and does not have the problem of filter medium blockage. The whole device has simple components, is beneficial to maintenance and repair, and has wide technical popularization prospect.

Drawings

Fig. 1 is a schematic view of a circulating filter device for use in a liquid.

Fig. 2 is a schematic view of a screw joint structure.

Fig. 3 is a schematic view of the suction cylinder structure.

Figure 4 is a longitudinal section through the side wall of the suction canister.

Fig. 5 is a schematic view of the cartridge configuration.

Fig. 6 is a schematic view of the structure of the fixed end of the extrusion container and the fixed end ring valve I.

Fig. 7 is a schematic structural diagram of the extruding cylinder telescopic end and telescopic end ring valve II and a magnetic suspension track.

Figure 8 is a schematic view of the dewatering cylinder and ring valve III.

In the figure: 1. a threaded joint, 2, a suction cylinder, 3, a collection cylinder, 4, a fixed end of the extrusion cylinder, 5, a telescopic end of the extrusion cylinder, 6, a dewatering cylinder, 7, an outer discharge pipe for impurities, 8, a conveying crawler, 11, an inner side wall of the threaded joint, 12, an outer side wall of the threaded joint, 21, an inner side wall of the suction cylinder, 22, an outer side wall of the suction cylinder, 23, a top surface of the suction cylinder, 24, a bottom surface of the suction cylinder, 25, a filter sheet on the top surface of the suction cylinder, 26, a hollow hole of the side wall of the suction cylinder, 31, an inner side wall of the collection cylinder, 32, an outer side wall of the collection cylinder, 33, a top surface of the collection cylinder, 34, a bottom surface of the collection cylinder, 41, an inner side wall of the fixed end of the extrusion cylinder, 42, an outer side wall of the fixed end of the extrusion cylinder, 43, a top surface of the fixed end of the extrusion cylinder, 54. the device comprises an extrusion cylinder, a flexible end bottom surface, 55, a gel injection storage area, 56, ring valves II, 61, a dewatering cylinder inner side wall, 62, a dewatering cylinder outer side wall, 63, a dewatering cylinder top surface, 64, a dewatering cylinder bottom surface, 65, a dewatering cylinder side wall filling body, 66, a ring valve III, 67, a rotating rail, 461, a ring valve I silica gel ring, 462, a ring valve I cross slide rail, 463, a ring valve I silica gel ring group, 561, a ring valve II silica gel ring, 562, a ring valve II cross slide rail, 563, a ring valve II silica gel ring group, 564, a magnetic levitation track, 661, a ring valve I silica gel ring, 662, a ring valve I cross slide rail, 663, and a ring valve I silica gel ring group.

Detailed Description

The circulating filter device comprises a main body component, a suction barrel, a collecting barrel, an extrusion barrel, a dewatering barrel and an impurity discharging pipe from top to bottom, wherein accessory accessories of the main body component comprise a ring valve I, a ring valve II, a ring valve III, a magnetic suspension track, a rotating track, a conveying crawler belt, filter sheets, a filter membrane and other filter media.

In the main component of the device structure of the embodiment of the invention, a threaded joint, a suction barrel, an extrusion barrel and a dewatering barrel are all hollow annular cylinders; the collecting cylinder is a hollow inverted cone frustum. The screwed joint, the suction cylinder, the extrusion cylinder, the dewatering cylinder and the collecting cylinder have the same central axis.

In the main component of the device structure of the embodiment of the invention, except that the extrusion cylinder and the dewatering cylinder form dynamic connection by the magnetic suspension track and the rotating track, other main components are integrally formed and connected, thereby greatly increasing the sealing property of the device. Wherein, the inner side wall of the end head at one side of the screwed joint is integrally formed and connected with the outer side wall of the end head at the top surface of the suction cylinder; the bottom surface of the suction cylinder which is also circular is the same as the top surface of the collection cylinder in size and is integrally formed and connected; the bottom surface of the suction cylinder which is also circular is the same as the top surface of the collection cylinder in size and is integrally formed and connected; the bottom surface of the collecting barrel which is also circular is the same as the top surface of the fixed end of the extrusion barrel in size and is integrally connected with the top surface of the fixed end of the extrusion barrel in a forming way; the bottom surface of the fixed end of the extrusion container is integrally formed and connected with the top surface of the telescopic end of the extrusion container; the inner side wall of the end socket of the bottom surface of the dewatering cylinder is integrally formed and connected with the outer side wall of the impurity discharging pipe.

In the embodiment of the invention, the connection part of the screwed joint and the suction cylinder is a circular filter disc which can separate suspended solid impurities such as excrement, residual bait and the like in the aquaculture water from water and can only enable water to permeate in one direction, and the circumference of the filter disc and the inner side wall of the suction cylinder are sealed.

In the embodiment of the invention, the side wall of the suction cylinder has a certain thickness; hollow ducts penetrating through the side wall entity are uniformly distributed at different distances along the length direction of the cylindrical surface of the side wall of the suction cylinder along the circumference of the cross section of the ring cylinder, the ducts form a downward inclined angle from the outer wall surface to the inner wall surface of the ring cylinder, and the inner diameter of the ducts is gradually reduced, namely the hollow ducts with large outer holes and small inner holes and inclined downward from outside to inside are uniformly distributed in the solid side wall of the whole ring cylinder with certain thickness.

In the embodiment of the invention, the thickness of the side wall of the collecting cylinder or the thickness of the side wall of the collecting cylinder from the top surface of the collecting cylinder to the bottom surface of the collecting cylinder is gradually reduced.

In the embodiment of the invention, the bottom surface of the fixed end of the extrusion container and the top surface of the telescopic end of the extrusion container which are both circular are the same in size and are integrally connected; the side wall surface of the fixed end of the extrusion container is made of rigid solid material with a certain length, the inner side wall surface and the outer side wall surface of the telescopic end of the extrusion container are both shock-resistant corrugated stacked filter membranes, and the inner side wall and the outer side wall of the telescopic end of the extrusion container are hollow; a ring valve I and a ring valve II are respectively arranged at the joint of the fixed end of the extrusion cylinder and the collecting cylinder and the joint of the telescopic end of the extrusion cylinder and the dewatering cylinder; a region, close to the collecting barrel, on the outer side wall surface of the fixed end of the extrusion barrel is provided with a circular gel injection port, a gel injection bent pipe with an elbow of 90 degrees or 135 degrees is arranged in the extrusion barrel, straight line sections at two ends of the elbow are respectively communicated with the outer side wall surface of the fixed end of the extrusion barrel and a connecting surface between the fixed end of the extrusion barrel and the telescopic end of the body, and all connecting ports of the bent pipe and contact surfaces of the bent pipe and the solid side wall of the fixed end of the annular cylinder are subjected to sealing treatment; a gel injection agent storage area in the device is arranged between the inner and outer corrugated stacked filter membrane wall surfaces of the telescopic end of the extrusion cylinder.

In the embodiment of the invention, the wall surfaces of the corrugated stacked filter membranes at the inner side and the outer side of the telescopic end of the extrusion cylinder are all one-way check filter membranes. The inner side filter membrane only allows water to flow from the inner side of the filter membrane to the outer side of the filter membrane through the one-way permeation filter membrane, and the gel injection agent flows from the outer side of the filter membrane to the inner side of the filter membrane through the one-way permeation filter membrane, and the filter membrane is provided with a heating control system; the filter membrane at the outer side of the telescopic end of the squeezing barrel only allows water to pass through the filter membrane from the inner side of the filter membrane to the outer side of the filter membrane in a single direction, and does not allow the gel injection agent to pass through the filter membrane from any direction.

In the embodiment of the invention, the side wall of the dewatering cylinder has a certain thickness, and the side wall filler is a hollow annular column body made of light large-hole structure masonry materials; a ring valve III is arranged at the joint of the bottom surface of the dewatering cylinder and the impurity outer discharge pipe; the inner side wall and the outer side wall of the dewatering cylinder are provided with non-return filter membranes with one-way water permeability, and only water is allowed to be discharged into the culture environment water body from the hollow area inside the extrusion cylinder through the side wall filling body of the extrusion cylinder.

In the extrusion cylinder of the embodiment of the invention, the ring valve I, the ring valve II and the ring valve III are completely the same in structure and material and are all composed of a sealing silica gel ring frame and a corrugated high-elastic pressure-resistant silica gel ring group. The sealing silica gel ring frame is a circular silica gel ring internally connected with a cross slide rail, and the silica gel ring group consists of four silica gel corrugated folding fan units with 90-degree fan angles. The folding fan unit after being tiled and stretched is square, is a structure with high-elastic corrugated silica gel film wrapped between the parallel flexible spring metal folding bones at equal intervals and outside the folding bones, and is assembled in a sealing silica gel ring frame, and a cross slide rail divides a fan-shaped space with a fan angle of 90 degrees. The base lines of the folding fan unit stretching and folding are all circular silica gel rings of the sealing silica gel ring frame, and the sealing performance is guaranteed through the connection between the folding fan unit and the cross slide rail. When the folding fan unit is in the maximum stretching state, the fan surfaces of the folding fan unit in the four fan-shaped spaces of the cross slide rail just form a closed circular surface; when the folding fan units are controlled to be folded, all the folding fan unit sectors in the four sector spaces of the cross slide rail are folded towards the sector arc line side, namely the circular silica gel ring side of the sealing silica gel ring frame, and the four folding fan unit sectors in the maximum folding state just form a hollow circular ring surface.

In the embodiment of the invention, a circular magnetic suspension track is integrally formed and connected at the joint of a sealing silica gel ring frame of the ring valve II and the bottom surface of the telescopic end of the extrusion container below the ring valve II at the bottom surface of the telescopic end of the extrusion container; the central annular circumference of the top surface of the dewatering cylinder is integrally connected with a rotating rail matched with the magnetic suspension rail at the telescopic end of the extrusion cylinder.

In the embodiment of the invention, the impurity discharging pipe is an L-shaped 90-degree right-angle pipe. One side of the straight pipe section has the same central axis with the threaded joint, the suction cylinder, the collection cylinder, the extrusion cylinder and the dewatering cylinder, and the outer circumference of the pipe section is equal to the circumference of the inner side wall of the dewatering cylinder; the inside below tiling of opposite side has the circulation to convey the track, and the outer circumference of this side straight tube section is greater than dewatering cylinder inside wall circumference to guarantee that there is enough space to satisfy the conveying to the impurity block in the tube section inside of the track top of the outer row of impurity block of conveying, be unlikely to block up the block card in the pipeline section.

The embodiment of the invention comprises the following steps:

a small circulation filter device for liquid is shown in figure 1. The pump body with the drain opening is not shown as a component of the circulating filter device of the present invention. The circulating filter device is connected with a pump body with a water outlet through a main body part threaded connector (1). The circulating filter device is characterized in that the circulating filter device connected with the pump body is completely immersed in a culture water body environment, the pump body is arranged at the top, and main components of the whole device below the pump body are a threaded joint (1), a suction cylinder (2), a collecting cylinder (3), an extrusion cylinder fixed end (4), an extrusion cylinder telescopic end (5), a dewatering cylinder (6) and an impurity external discharge pipe (7) from top to bottom in sequence.

The schematic diagram of the screw joint structure, the schematic diagram of the suction tube structure, the longitudinal section of the side wall of the suction tube, the schematic diagram of the collecting tube structure, the schematic diagram of the structure of the extrusion tube fixed end and the fixed end ring valve I, the schematic diagram of the structure of the extrusion tube telescopic end and the telescopic end ring valve II and the magnetic suspension track structure, and the schematic diagram of the structure of the dewatering tube and the ring valve III are respectively shown in the attached figures 2-7. Except the pump body and the impurity discharging pipe (7), the contact surface of the whole set of device and the aquaculture water body outside the device sequentially comprises a threaded joint outer side wall (12), a suction tube outer side wall (22), a collecting tube outer side wall (32), an extrusion tube fixed end outer side wall (42), an extrusion tube telescopic end outer side wall (52), a dewatering tube outer side wall (62) and a dewatering tube bottom surface (64) from top to bottom; the contact surface of the aquaculture water body to be treated after entering the complete set of device and the complete set of device sequentially comprises a threaded joint inner side wall (11), a suction tube inner side wall (21), a collecting tube inner side wall (31), an extrusion tube fixed end inner side wall (41), an extrusion tube telescopic end inner side wall (51) and a dewatering tube inner side wall (61) from top to bottom.

The whole device has better sealing performance. The inner side wall (11) of the threaded joint is integrally connected with the outer side wall (22) of the suction cylinder in a forming way in a certain length; the bottom surface (24) of the suction cylinder is integrally connected with the top surface (33) of the collection cylinder in a forming way; the bottom surface (34) of the collecting barrel is integrally connected with the top surface (43) of the fixed end of the extruding barrel in a forming way; the bottom surface (44) of the fixed end of the extrusion container is integrally connected with the top surface (53) of the telescopic end of the extrusion container in a forming way; the rotating rail (67) which is integrally formed and connected with the hollow circumference of the top surface (63) of the dewatering cylinder is hermetically embedded into a magnetic suspension rail (564) which is integrally formed and connected with the bottom surface (54) of the telescopic end of the extrusion cylinder and is connected with a ring valve II (56) which controls the discharge of internal substances at the hollow part; the inner side wall (61) of the dewatering cylinder is integrally formed and connected with the outer wall of a straight pipe section on one side of the L-shaped impurity outer discharge pipe (7) in a certain length; a sealing treatment is carried out between a suction cylinder top surface filter sheet (25) arranged at the hollow part of the suction cylinder top surface (23) and the suction cylinder inner side wall (21); the annular ring valve I (46) installed in a hollow area at the joint of the bottom surface (34) of the collecting cylinder and the top surface (43) of the fixed end of the extrusion cylinder, the annular ring valve II (56) installed in a hollow area at the bottom surface (54) of the telescopic end of the pressing cylinder and the annular ring valve III (66) installed in a hollow area at the bottom surface (64) of the dewatering cylinder are respectively composed of a sealing silica gel ring frame and a corrugated high-elastic pressure-resistant silica gel ring group (463, 563, 663), and the sealing silica gel ring frame is a circular silica gel ring (461, 561, 661) of an internally-connected cross sliding rail (462, 562, 662).

The whole device is immersed in the culture water body, and under the intermittent work of an external pump body, the circulating purification treatment of water containing suspended solid impurities such as excrement, residual bait and the like is completed. The purified water returns to the aquaculture water body; the separated suspended solid impurities are solidified and formed by glue injection and dehydrated to be used as soil fertilizer. The operation of the whole set of equipment is as follows.

Before operation, the ring valves (46, 56, 66) are closed, and the folding fan unit sectors in the four sector spaces of the cross slide rail are in the maximum stretching state and just form a closed circular surface, so that the material in the space above the folding fan unit sectors is well supported and the downward movement of the folding fan unit sectors is blocked. The external pump body is started simultaneously, negative pressure is formed inside the suction barrel (2) connected with the pump body through the threaded connector (1), so that aquaculture water outside the device enters the inside of the suction barrel (2) through the hollow hole (26) in the side wall of the suction barrel, with the downward inclination angle from the outer wall surface to the inner wall surface and the gradually reduced inner diameter, establishes a channel for the aquaculture water outside the device, wherein the channel is used for effectively sucking water containing suspended solid impurities into the suction barrel (2) under the action of negative pressure generated by the work of the pump body above the suction barrel (2). The water which enters the suction cylinder (2) and contains suspended solid impurities such as excrement, residual bait and the like flows to the top surface filter sheet (25) of the suction cylinder under the suction of the pump body above the suction cylinder (2), the suspended solid impurities and the water are separated at the top surface filter sheet (25) of the suction cylinder, the water enters the pump body through the top surface filter sheet (25) of the suction cylinder and flows back to the aquaculture water outside the device through a water outlet of the pump body, the intercepted suspended solid impurities are continuously accumulated below the top surface filter sheet (25) of the suction cylinder inside the suction cylinder (2), when the accumulation amount of the suspended solid impurities reaches a certain degree, the pump body is closed, the ring valve I (46) is opened, the fan faces of the folding fan units in the four fan-shaped spaces of the cross slide rail are in the maximum folding state to form a hollow ring face, and the drainage of substances carried by the upper space of the cross slide rail is realized. Impurities move downwards in the suction cylinder (2) through free settling and enter the extrusion cylinder through a collecting cylinder (3) below the suction cylinder, and a hollow pore passage (26) in the side wall of the suction cylinder, which has a downward inclined angle from the outer wall surface to the inner wall surface and a gradually reduced inner diameter, effectively avoids the problem that suspended solid impurities in the suction cylinder (2) flow back out of the device in the free settling process when a pump body is in a non-working state; the inverted cone-shaped collecting barrel ensures that the suspended solid impurities fully utilize the accelerated motion and compaction effects of the suspended solid impurities in the tapered flow passage. At this point, the ring valve I (46) is closed and the pump body is actuated. The operation is periodically and repeatedly carried out, so that the cultivation water outside the device is sucked into the suction cylinder, and the periodic operation of separating impurities from water, discharging purified water and depositing the impurities in the extrusion cylinder is completed.

The gel injection agent enters a gel injection agent storage area (55) formed by enclosing of an extrusion cylinder telescopic end inner side wall (51), an extrusion cylinder telescopic end outer side wall (52), an extrusion cylinder telescopic end top surface (53) and an extrusion cylinder telescopic end bottom surface (54) through a gel injection agent injection port (45) connected to the side wall of the extrusion cylinder fixed end (4). After the suspended solid impurities enter the extrusion container, the extrusion container starts to work under the closed state of the ring valves (46, 56). The gel injection agent in the gel injection agent storage area (55) penetrates through a filter membrane (51) on the inner side wall of the telescopic end of the extrusion container, is extruded into a hollow area in the extrusion container and is mixed with suspended solid impurities in the hollow area, and the gel injection amount entering the hollow area in the extrusion container is controlled according to the operation specification of the device; the water in the hollow area inside the extrusion container enters a gel injection agent storage area (55) through the filter membrane on the inner side wall (51) of the telescopic end of the extrusion container, and is extruded out of the device through the filter membrane on the outer side wall (52) of the telescopic end of the extrusion container to enter the aquaculture water environment. During the extrusion operation of the extrusion container, suspended solid impurities in the hollow area inside the extrusion container are gradually formed into a cylindrical block during the mixing and curing process of the gel injection agent. At the moment, the telescopic end (5) of the extrusion cylinder stops working, the ring valve II (56) is opened, and the formed impurity blocks are discharged into a hollow area inside the dewatering cylinder (6). Then, the opening ring valve I (46) is controlled to treat suspended solid impurities entering the hollow area in the extrusion cylinder from the suction cylinder (2) through the collecting cylinder (3).

After the impurity block body which is a cylinder enters the hollow area inside the dewatering cylinder (6), the ring valve II (56) is closed, and the dewatering cylinder (6) starts to work. The rotating track (67) of the top surface (63) of the dewatering cylinder runs on the magnetic suspension track (564) at the joint of the bottom surface (54) of the telescopic end of the extrusion cylinder and the ring valve II (56) to realize 360-degree and high-speed rotary dewatering of the dewatering cylinder, the removed water enters the aquaculture water environment through the filter membrane on the inner side wall (61) of the dewatering cylinder, the filler (65) on the side wall of the dewatering cylinder and the filter membrane on the outer side wall (62) of the dewatering cylinder, and the water content of the impurity blocks in the hollow area inside the dewatering cylinder (6) is reduced. The light macroporous structure masonry material is used as a side wall filling body (65) of the dewatering cylinder, not only is used as a water permeable channel, but also the light structure characteristic of low density ensures the good running state of high-speed rotation in the dewatering cylinder. The operation is stopped after the dehydration operation of the dehydration cylinder (6) is finished, meanwhile, the ring valve III (66) is opened to discharge the cylindrical impurity blocks with the reduced water content into the L-shaped impurity external discharge pipe (7), the cylindrical impurity blocks of the conveying crawler belt (8) arranged inside the impurity external discharge pipe (7) are discharged out of the aquaculture water system to serve as other purposes such as soil fertilizer and the like, and then the ring valve III (66) is closed.

The device of the invention periodically finishes the operation under the intermittent operation of the external pump body, and can realize the circular purification treatment of the water containing suspended solid impurities such as excrement, residual bait and the like in the culture water system. The purified water is returned to the culture water body, and the separated suspended solid impurities are subjected to glue injection, solidification and dehydration to be used as soil fertilizer.