阅读说明：本技术 一种从土壤内提取磁性生物炭的装置 (Device for extracting magnetic biochar from soil ) 是由 肖小雨 杨建山 邹小明 张条 邓鸿宇 肖柳 于 2021-09-24 设计创作，主要内容包括：该发明涉及磁性生物炭分离装置技术领域,尤其涉及一种从土壤内提取磁性生物炭的装置。包括粉尘制备装置、风机和分离装置,所述风机将粉尘制备装置内的混合物粉尘抽吸至分离装置内；所述粉尘制备装置包括罐体、所述罐体的外侧设有加热机构,所述加热机构用于干燥罐体内部土壤和磁性生物炭的混合物,所述罐体的内部设有伸缩杆,所述伸缩杆的一端从罐体上端盖的中部穿出,所述伸缩杆位于罐体内部的一端上设有刮刀机构,所述刮刀机构用于将干燥后的混合物制成粉末状。本技术方案用以解决现有技术中在土壤中分离磁性生物炭时,土壤和水的混合不充分易形成泥块,泥块会将磁性生物炭携带并排出磁性装置,造成分离效果不佳的问题。(The invention relates to the technical field of magnetic biochar separation devices, in particular to a device for extracting magnetic biochar from soil. The dust separation device comprises a dust preparation device, a fan and a separation device, wherein the fan sucks mixture dust in the dust preparation device into the separation device; the dust preparation device comprises a tank body, the outside of the tank body is equipped with heating mechanism, heating mechanism is used for the mixture of the inside soil of the dry tank body and magnetic biochar, the inside of the tank body is equipped with the telescopic link, the middle part of jar body upper end cover is worn out to the one end of telescopic link, the telescopic link is located one of the internal portion of jar and is served and is equipped with scraper mechanism, scraper mechanism is used for making powdered with the mixture after the drying. This technical scheme is used for solving among the prior art when separating magnetism biochar in soil, the not abundant mud piece that easily forms of mixture of soil and water, and the mud piece can carry and discharge the magnetism device with magnetism biochar, causes the not good problem of separation effect.)

1. The device for extracting the magnetic biochar from the soil is characterized by comprising a dust preparation device, a fan and a separation device, wherein the fan sucks mixture dust in the dust preparation device into the separation device;

the dust preparation device comprises a tank body, wherein a heating mechanism is arranged on the outer side of the tank body, the heating mechanism is used for drying a mixture of soil and magnetic biochar in the tank body, a telescopic rod is arranged in the tank body, one end of the telescopic rod penetrates out of the middle of an upper end cover of the tank body, a scraper mechanism is arranged at one end, located in the tank body, of the telescopic rod, the scraper mechanism is used for making the dried mixture into powder, a lifting mechanism is arranged at one end, located on the outer side of the tank body, of the telescopic rod, and the lifting mechanism is used for lifting the scraper mechanism to the upper portion of the tank body;

the separation device comprises an adsorption device, a dust collecting box, a slurry collecting box and a magnetic biochar collecting box, the adsorption device comprises a device shell and an electromagnet arranged in the device shell, at least one group of spiral protrusions are arranged between the device shell and the electromagnet, a spiral channel is formed in a gap between the device shell and the electromagnet by the spiral protrusions, the air outlet end of the fan is connected with the inlet of the spiral channel, the outlet of the spiral channel is provided with a discharge pipe, the dust collecting box is communicated with the spiral channel by the discharge pipe, the discharge pipe is further provided with a slurry pipe and a collecting pipe, the slurry pipe is respectively communicated with the slurry collecting box, the magnetic biochar collecting box and the discharge pipe, a first control valve, a second control valve and a third control valve are arranged on the discharge pipe, the collecting pipe and the slurry pipe in decibels, a slurry pump is arranged in the dust collecting box, and a discharge end of the slurry pump is provided with a slurry conveying pipe communicated with an inlet of the spiral channel, the slurry conveying pipe is provided with a fourth control valve, and an air outlet end of the fan is provided with a fifth control valve.

2. The apparatus of claim 1, wherein the heating mechanism comprises a power source and a heating wire, the heating wire being wound around the outer surface of the tank.

3. The device for extracting magnetic biochar from soil as claimed in claim 1, wherein the scraper mechanism comprises a rotating motor and a scraper, an output shaft of the rotating motor is fixed on the end of the telescopic rod vertically downwards, and the scraper is fixed on the output shaft of the rotating motor.

4. The device for extracting magnetic biochar from soil as claimed in claim 1, wherein the lifting mechanism comprises a first end plate and a first electric cylinder, one end of the telescopic rod, which is located outside the tank body, is fixedly connected to the middle of the first end plate, the first electric cylinder is symmetrically arranged at the lower part of the first end plate, and the output end of the first electric cylinder is abutted to the first end plate.

5. The device for extracting magnetic biochar from soil as claimed in claim 1, wherein the lifting mechanism comprises a first connecting rod, a second end plate and a second electric cylinder, the first connecting rod and the second connecting rod are hinged end to end, the other ends of the first connecting rod and the second connecting rod are hinged to the second end plate and an end cover of the tank body respectively, the second electric cylinders are symmetrically arranged below the end plates, a cylinder body of the second electric cylinder is hinged to the end cover of the tank body, and an output end of the second electric cylinder is hinged to a hinged portion of the first connecting rod and the second connecting rod.

6. The apparatus of claim 3, wherein a compression spring is disposed between the rotating motor and the inner surface of the end cap of the tank, and the compression spring is used to apply a downward force to the rotating motor.

7. The device for extracting magnetic biochar from soil as claimed in claim 4, wherein a conical cover is arranged above the rotating motor, and a rubber strip attached to the inner wall of the tank body is arranged at the edge of the conical cover.

8. The device for extracting magnetic biochar from soil according to claim 1, two groups of spiral bulges are arranged between the device shell and the electromagnet, and two groups of spiral channels are formed between the gap between the device shell and the electromagnet, wherein the inlet of one group of spiral channels is communicated with the air outlet end of the fan, the outlet of the spiral channels is communicated with the dust collecting box by the discharge pipe, the inlet of the other group of spiral channels is communicated with the water outlet end of the slurry pump by a pipeline, a first connecting pipe for communicating the outlet of the other group of spiral channels with the slurry collecting box is arranged between the outlet of the other group of spiral channels and the slurry collecting box, a connecting branch pipe is arranged between the first connecting pipe and the discharge pipe, a second connecting pipe is arranged between the connecting branch pipe and the magnetic biochar collecting box, and the connecting branch pipe, the discharge pipe, the first connecting pipe and the second connecting branch pipe are all provided with control valves.

9. The device for extracting magnetic biochar from soil as claimed in claim 3, wherein a fixing plate is arranged above the scraper, one end of the fixing plate is fixed on an output shaft of the rotating motor, a supporting piece is arranged between the fixing plate and the upper surface of the scraper and is uniformly distributed in a straight line, and two ends of the supporting piece are respectively fixed on the fixing plate and the scraper.

10. The apparatus of claim 1, wherein the dust collection box is provided with a stirring mechanism.

Technical Field

The invention relates to the technical field of magnetic biochar separation devices, in particular to a device for extracting magnetic biochar from soil.

Background

In emerging industries such as electroplating and manufacturing industries of circuit boards, batteries and the like, pollution to local soil environment is inevitable. Soil pollution can affect the yield and quality of agricultural products, harm human living environment safety and threaten ecological environment safety. At present, the research of domestic soil remediation technologies mainly focuses on the directions of soil leaching, solidification/stabilization and the like, a large amount of chemical reagents are required in implementation, the physicochemical properties of soil can be changed, fertility loss is caused, and secondary pollution is possible, so that environment-friendly remediation materials such as biomass-based activated carbon are favored by a plurality of researchers. The biochar is used as a carrier, and the application range and functions of the biochar can be improved by adding the load modification of the magnetic substance, and the biochar can be applied to carbon fixation emission reduction, water source purification, heavy metal adsorption and soil improvement, but the magnetic biochar is high in cost and needs to be extracted and separated from the treated soil for recycling.

When separating magnetism biochar in soil among the prior art, the mode of taking obtains muddy water mixture for soil and water intensive mixing after will handling, then lets in the magnetic device with the muddy water mixture who forms in, adsorbs the magnetism biochar in it through the magnetic device, reaches the purpose of separation, but when adopting this kind of mode, the not abundant mud piece that easily forms of mixture of soil and water, the mud piece can carry the magnetism biochar and discharge the magnetic device, causes the not good problem of separation effect.

Disclosure of Invention

In view of the above technical shortcomings, an object of the present invention is to provide a device for extracting magnetic biochar from soil, which is used to solve the problem in the prior art that when magnetic biochar is separated from soil, the soil and water are not sufficiently mixed to easily form mud cake, and the mud cake can carry the magnetic biochar and discharge the magnetic biochar out of the magnetic device, resulting in poor separation effect.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the device for extracting the magnetic biochar from the soil comprises a dust preparation device, a fan and a separation device, wherein the fan sucks mixture dust in the dust preparation device into the separation device;

the dust preparation device comprises a tank body, wherein a heating mechanism is arranged on the outer side of the tank body, the heating mechanism is used for drying a mixture of soil and magnetic biochar in the tank body, a telescopic rod is arranged in the tank body, one end of the telescopic rod penetrates out of the middle of an upper end cover of the tank body, a scraper mechanism is arranged at one end, located in the tank body, of the telescopic rod, the scraper mechanism is used for making the dried mixture into powder, a lifting mechanism is arranged at one end, located on the outer side of the tank body, of the telescopic rod, and the lifting mechanism is used for lifting the scraper mechanism to the upper portion of the tank body;

the separation device comprises an adsorption device, a dust collecting box, a slurry collecting box and a magnetic biochar collecting box, the adsorption device comprises a device shell and an electromagnet arranged in the device shell, at least one group of spiral protrusions are arranged between the device shell and the electromagnet, a spiral channel is formed in a gap between the device shell and the electromagnet by the spiral protrusions, the air outlet end of the fan is connected with the inlet of the spiral channel, the outlet of the spiral channel is provided with a discharge pipe, the dust collecting box is communicated with the spiral channel by the discharge pipe, the discharge pipe is further provided with a slurry pipe and a collecting pipe, the slurry pipe is respectively communicated with the slurry collecting box, the magnetic biochar collecting box and the discharge pipe, a first control valve, a second control valve and a third control valve are arranged on the discharge pipe, the collecting pipe and the slurry pipe in decibels, a slurry pump is arranged in the dust collecting box, and a discharge end of the slurry pump is provided with a slurry conveying pipe communicated with an inlet of the spiral channel, the slurry conveying pipe is provided with a fourth control valve, and an air outlet end of the fan is provided with a fifth control valve.

Further, it is limited that the heating mechanism comprises a power supply and an electric heating wire, the electric heating wire is wound on the outer surface of the tank body, and the electric heating wire has the advantages that when the magnetic biochar is added into soil to adsorb harmful substances, water is required to be added to fully mix the soil and the magnetic biochar, so that the adsorption effect of the harmful substances can be improved, and the electric heating wire is arranged to dry a mixture of moist soil and the magnetic biochar and prepare for subsequent dust preparation.

Further inject, scraper mechanism includes rotating electrical machines and scraper, the vertical tip that is fixed in the telescopic link down of rotating electrical machines output shaft, the scraper is fixed in on rotating electrical machines's the output shaft, and its beneficial effect lies in, and rotating electrical machines drives the scraper rotatory, carries out the friction repeatedly to dry mixture surface when the scraper is rotatory, can be with the dry mixture make the dust a bit.

Further inject, lifting mechanism includes first end plate and first electric jar, the telescopic link is located the middle part of the outer one end fixed connection of jar in first end plate, first electric jar symmetry sets up in the lower part of first end plate, and the output and the first end plate butt of first electric jar, and its beneficial effect lies in that lifting mechanism can promote scraper mechanism to the upper portion of the jar body, is convenient for pack into the inside of the jar body with the mixture of moist soil and magnetism biochar.

Further limit, the lifting mechanism comprises a first connecting rod, a second end plate and a second electric cylinder, the first connecting rod and the second connecting rod are hinged end to end, the other ends of the first connecting rod and the second connecting rod are respectively hinged with a second end plate and an end cover of the tank body, the second electric cylinders are symmetrically arranged below the end plates, the cylinder body of the second electric cylinder is hinged with the end cover of the tank body, the output end of the second electric cylinder is hinged with the hinged part of the first connecting rod and the second connecting rod, the beneficial effects are that the second electric cylinder pushes the first connecting rod and the second connecting rod hinge part to increase the included angle between the first connecting rod and the second connecting rod, the jacking function can be realized, the connecting rod is better in that the first connecting rod and the second connecting rod can approach and coincide, the telescopic link is bigger in vertical ascending motion range promptly, can increase the motion stroke of scraper mechanism in jar internal.

Further limit, be equipped with compression spring between the internal surface of rotating electrical machines and jar body end cover, compression spring is used for exerting decurrent effort for rotating electrical machines, and its beneficial effect lies in, compression spring supports scraper mechanism tightly on dry mixture, can strengthen contact pressure, can promote the effect that the dust was prepared.

Further inject, rotating electrical machines's top is equipped with the conical cover, the edge of conical cover is equipped with the rubber strip with jar internal wall laminating, its beneficial part lies in, the suction end of fan passes through hose connection on the conical cover, and the lower part space intercommunication of the jar body, such good play lies in that the conical cover can be injectd the diffuse space of dust, and can gather together the dust realization, the fan of being convenient for is to the absorption of dust, and such setting can make the hose suction mouth of fan remain unchanged with the distance on dry mixture surface all the time, further promote the suction effect of fan to the dust.

Further limiting, two groups of spiral protrusions are arranged between the device shell and the electromagnet, two groups of spiral channels are formed between a gap between the device shell and the electromagnet, the inlet of one group of spiral channels is communicated with the air outlet end of the fan, the outlet of the spiral channels is communicated with the dust collecting box through the discharge pipe, the inlet of the other group of spiral channels is communicated with the water outlet end of the slurry pump through a pipeline, a first connecting pipe for communicating the outlet of the other group of spiral channels with the slurry collecting box is arranged between the outlet of the other group of spiral channels and the slurry collecting box, a connecting branch pipe is arranged between the first connecting pipe and the discharge pipe, a second connecting pipe is arranged between the connecting branch pipe and the magnetic biochar collecting box, and control valves are arranged on the connecting branch pipe, the discharge pipe, the first connecting pipe and the second connecting branch pipe, the magnetic biochar in the dust and the magnetic biochar in the slurry can be removed simultaneously, the flows of the dust and the slurry in the two groups of spiral pipelines are not interfered and influenced mutually, and the speed of separating the magnetic biochar in the soil can be improved.

Further inject, the top of scraper is equipped with the fixed plate, the one end of fixed plate is fixed in on the output shaft of rotating electrical machines, be equipped with the support piece of sharp equipartition between the upper surface of fixed plate and scraper, support piece's both ends are fixed in respectively on fixed plate and the scraper, and its beneficial part lies in, and the swing of scraper distal end can be reduced with the setting that supports will, promotes the dust preparation effect.

Further inject, be equipped with rabbling mechanism in the dust collecting box, its beneficial part lies in, stirs dust and water, avoids the dust to deposit in the aquatic.

The working principle of the technical scheme is as follows:

injecting a soil mixture mixed with magnetic biochar into the tank body, then starting a heating mechanism by a control system to enable an electric heating wire to be electrified and generate heat to dry a wet mixture in the tank body, after drying is finished, closing the heating mechanism, starting a fan and a scraper mechanism, simultaneously closing a fourth control valve and a fifth control valve, forming dust by the dried mixture under the action of the scraper mechanism, sucking the dust into an adsorption device by the fan, fully contacting the dust with an electromagnet through a spiral channel, adsorbing the magnetic biochar in the dust by the electromagnet to achieve the purpose of first removal, introducing the discharged dust into a dust collection box to mix with water in the dust collection box to form slurry with smaller particles, after the dust is removed, closing a control valve arranged on an outlet end of the fan and the first control valve on a discharge pipe, and simultaneously opening a third control valve on a slurry pipe, then, slurry is pumped into the spiral channel under the action of the slurry pump, secondary separation of magnetic biochar is carried out, then discharged slurry water is discharged into the slurry collecting box, purified soil can be obtained only through simple separation, finally, the fan and the heating mechanism are opened, hot air is pumped into the adsorption device by the fan, the electromagnet power supply is turned off at the moment, meanwhile, the third control valve on the slurry pipe is turned off, the second control valve on the magnetic biochar collecting pipe is turned on, the magnetic biochar losing adsorption force is discharged into the magnetic biochar collecting box under the action of hot air flow, and the adsorption device and the magnetic biochar can be dried by the hot air, so that subsequent use is facilitated.

The invention has the following technical effects:

(1) through preparing a spiral channel for introducing dust into the separating device, the dust is fully contacted with the electromagnet, and meanwhile, the carrying capacity of the dust on the magnetic biochar mixed in the dust is poor, so that the adsorption effect of the electromagnet on the magnetic biochar in the dust is better.

(2) Form the effectual of mud through the dust, do not have great particulate matter in it, when letting in adsorption equipment, be difficult for appearing blockking up helical channel's problem to and can not appear big particulate matter and carry the discharge with magnetism biochar, can further promote the effect of drawing of magnetism biochar.

(3) This device is through preparing layer dust to the soil that thoughtlessly has magnetism biochar, carries out the first separation of magnetism biochar in the dust earlier, then makes mud with the exhaust dust, then carries out the secondary separation to still remaining a small amount of magnetism biochar in forming mud, and dual separation has promoted the effect of extracting magnetism biochar in the soil.

Drawings

Fig. 1 is a perspective view of the device.

Fig. 2 is a schematic cross-sectional view of a front view of the present device.

Fig. 3 is a schematic view of the installation of the scraper device in the tank body.

Fig. 4 is a perspective view of the doctor apparatus.

FIG. 5 is a schematic view of a double spiral channel adsorption apparatus according to example 2.

Reference numerals

The device comprises a mounting plate 1, a tank body 2, a feeding hole 3, a heating wire 4, a fan 5, a first end plate 6, a first electric cylinder 7, a device shell 8, a mounting frame 9, a magnetic biochar collecting box 10, a mud collecting box 11, a dust collecting box 12, a discharging pipe 13, a mud pipe 14, a collecting pipe 15, a second control valve 16, a third control valve 17, a first control valve 18, a fourth control valve 19, a mud conveying pipe 20, a mud pump 21, a stirring mechanism 22, a spiral protrusion 23, an electromagnet 24, an expansion rod 25, a compression spring 26, a conical cover 27, a rotating motor 28, a scraper 29, a fixing plate 30, a support piece 31, a fifth control valve 32, a first connecting pipe 33, a second connecting pipe 34, a branch pipe 35, a sixth control valve 36, a seventh control valve 37, an eighth control valve 38, a ninth control valve 39, a first spiral channel 40 and a second spiral channel 41.

Detailed Description

The following is further detailed by way of specific embodiments:

as shown in fig. 1 to 4, the device for extracting magnetic biochar from soil comprises a dust preparation device fixed on a mounting plate 1, a fan 5 and a separation device, wherein the fan 5 sucks mixture dust in the dust preparation device into the separation device; for convenience of understanding, a simple definition is performed on the concept of dust, in this embodiment, the particle size of the dust is related to the power of the fan 5, the dust may be composed of powder with a small particle size and particulate matters with a small particle size, as long as the fan can suck the formed "dust" into the separation device, and there is no large mud block which is not easily stirred and mixed in the slurry formed by the "dust", the specific particle size may be adjusted according to the actual use process, and meanwhile, this specific embodiment further includes a control plc control system, the control system is configured to control each component in this device to work in a coordinated manner, and in this embodiment, redundant description is not performed on the control system.

The dust preparation device comprises a tank body 2, a feed inlet 3 is formed in one side of the tank body 2, a heating mechanism is arranged on the outer side of the tank body 2, the heating mechanism is used for drying a mixture of soil and magnetic biochar in the tank body 2, a telescopic rod 25 is arranged in the tank body 2, one end of the telescopic rod 25 penetrates out of the middle of an upper end cover of the tank body 2, a scraper mechanism is arranged at one end of the telescopic rod 25 in the tank body 2 and used for making the dried mixture into powder, and a lifting mechanism is arranged at one end of the telescopic rod 25 outside the tank body 2 and used for lifting the scraper mechanism to the upper portion of the tank body 2;

the separation device comprises an adsorption device, a dust collection box 12, a slurry collection box 11 and a magnetic biochar collection box 10, the adsorption device comprises a device shell 8 and an electromagnet 24 arranged in the device shell 8, a group of spiral protrusions 23 are arranged between the device shell 8 and the electromagnet 24, the spiral protrusions 23 form a spiral channel in a gap between the device shell 8 and the electromagnet 24, the air outlet end of the fan 5 is connected with the inlet of the spiral channel, the outlet of the spiral channel is provided with a discharge pipe 13, the discharge pipe 13 is communicated with the dust collection box 12 and the spiral channel, the discharge pipe 13 is also provided with a slurry pipe 14 and a collection pipe 15 which are respectively communicated with the slurry collection box 11, the magnetic biochar collection box 10 and the discharge pipe 13, the collection pipe 15 and the slurry pipe 14 are respectively provided with a first control valve 18, a second control valve 16 and a third control valve 17 which are used for controlling the on-off states of the discharge pipe 13, the collection pipe 15 and the slurry pipe 14 in decibels, a mud pump 21 is arranged in the dust collecting box 12, a slurry conveying pipe 20 communicated with the inlet of the spiral channel is arranged at the discharge end of the mud pump 21, a fourth control valve 19 is arranged on the slurry conveying pipe 20, and a fifth control valve 32 is arranged at the air outlet end of the fan.

Heating mechanism includes power and heating wire 4, and heating wire 4 twines on jar body 2's surface, because when adding magnetism biochar to harmful substance in to soil and adsorbing, need add water and carry out abundant mixing with the two, just can improve harmful substance's adsorption effect, consequently set up the purpose of heating wire 4 and dry moist soil and magnetism biochar's mixture, prepare subsequent dust preparation.

The scraper mechanism comprises a rotating motor 28 and scrapers 29, an output shaft of the rotating motor 28 is vertically fixed at the end part of the telescopic rod 25 downwards, the scrapers 29 are fixed on the output shaft of the rotating motor 28, the number of the scrapers 29 can be selected according to actual conditions, in the embodiment, the number of the scrapers 29 is one, the rotating motor 28 drives the scrapers 29 to rotate, the scrapers 29 rotate and rub the surface of the dried mixture repeatedly, and the dried mixture can be made into dust little by little.

Lifting mechanism includes first terminal plate 6 and first electric jar 7, and telescopic link 25 is located the outer one end fixed connection in the middle part of first terminal plate 6 of jar body 2, and first electric jar 7 symmetry sets up in the lower part of first terminal plate 6, and the output of first electric jar 7 and the first terminal plate 6 butt, and lifting mechanism can promote scraper mechanism to the upper portion of jar body 2, is convenient for pack into jar body 2's inside with the mixture of moist soil and magnetism biochar. First electric jar 7 is the modularization product of among the prior art with servo motor and lead screw integrated design, converts servo motor's rotary motion into linear motion, and the benefit of butt lies in, and the first electric jar 7 of scraper 29 during operation can be retrieved, and telescopic link 25 downstream under the gravity of scraper mechanism, and provides the contact stress of dry soil for the scraper through gravity, can reduce the control complexity of this device.

A compression spring 26 is arranged between the rotating motor 28 and the inner surface of the end cover of the tank body 2, the compression spring 26 is used for applying downward acting force to the rotating motor 28, the scraper mechanism is tightly pressed on the dry mixture by the compression spring 26, the contact pressure can be enhanced, the dust preparation effect can be improved, the compression spring 26 is practically arranged, the lifting power element adopts an air cylinder or a driving piece with one-way motion, the lifting action can be realized, but the scraper is unpowered during the return process, the connection mode can be similar to the connection mode of the first electric cylinder 7 and the first end plate 6, the scraper 29 is tightly pressed on the dry soil mixture by the elasticity of the compression spring 26 and the gravity of the scraper mechanism, meanwhile, when the scraper 29 meets unscreened clean stones or hard substances in the soil, the air cylinder and the compression spring 26 have the advantages of up-down floating, namely, the scraper 29 is prevented from being hard to the hard substances, causing a problem of damage to the doctor blade 29.

The top of rotating electrical machines 28 is equipped with conical cover 27, the edge of conical cover 27 is equipped with the rubber strip with the laminating of the internal wall of jar 2, the suction end of fan 5 passes through hose connection on conical cover 27, with the lower part space intercommunication of the jar body 2, such good play lies in that conical cover 27 can prescribe a limit to the diffuse space of dust, and can gather together the dust realization, the fan 5 of being convenient for is to the absorption of dust, and such setting can make the hose suction mouth of fan 5 keep unchangeable with the distance on dry mixture surface all the time, further promote the suction effect of fan 5 to the dust.

The top of scraper 29 is equipped with fixed plate 30, and the one end of fixed plate 30 is fixed in on the output shaft of rotating electrical machines 28, is equipped with the support piece 31 of straight line equipartition between the upper surface of fixed plate 30 and scraper 29, and on fixed plate 30 and scraper 29 were fixed in respectively at support piece 31's both ends, fixed plate 30 and the setting that supports will, can reduce the swing of scraper 29 distal end, promote dust preparation effect, and support piece can be the elastic component, plays the energy-absorbing and reduces wobbling purpose.

The dust collection box 12 is internally provided with a stirring mechanism 22 for stirring dust and water to avoid the dust from precipitating in the water, and in the embodiment, the stirring mechanism 22 is a combination of a motor and a stirring rod in the prior art, so that excessive stirring is not needed, and the knowledge prevents precipitation and agglomeration.

Example 2

As shown in fig. 5, the difference between the embodiment 2 and the embodiment 1 lies in the different number of spiral passages in the separating device and the different connection manner of the dust collecting box 12, the slurry collecting box 11 and the magnetic biochar collecting box 10, and specifically, two sets of spiral protrusions 23 are provided between the device housing 8 of the separating device and the electromagnet 24, the spiral protrusions 23 can be selected as spiral springs in this embodiment, the spiral springs are wound on the outer surface of the electromagnet 24, and by welding the spiral springs on the device housing 8 and the electromagnet 24, of course, spiral grooves are also practical in this embodiment, and two sets of spiral passages are formed between the gap between the device housing 8 and the electromagnet 24, respectively, a first spiral passage 40 and a second spiral passage 41, wherein the inlet of one set of spiral passages is communicated with the air outlet of the blower 5, and the discharge pipe 13 is communicated between the outlet of the spiral passages and the dust collecting box 12, the inlet of the other set of spiral channel is communicated with the water outlet end of the slurry pump 21 through a pipeline, a first connecting pipe 33 for communicating the outlet of the other set of spiral channel with the slurry collecting tank 11 is arranged between the outlet of the other set of spiral channel and the slurry collecting tank 11, a connecting branch pipe 35 is arranged between the first connecting pipe 33 and the discharge pipe 13, a second connecting pipe 34 is arranged between the connecting branch pipe 35 and the magnetic biochar collecting tank 10, control valves are arranged on the connecting branch pipe 35, the discharge pipe 13, the first connecting pipe 33 and the second connecting branch pipe 35, in order to distinguish the control valves, the control valves on the corresponding pipelines in the embodiment are numbered, specifically, a sixth control valve 36 is arranged on the discharge pipe 13, a seventh control valve 37 is arranged on the first connecting pipe 33, an eighth control valve 38 is arranged on the second connecting pipe 34, a ninth control valve 39 is arranged on the connecting branch pipe 35, two sets of spiral channels are arranged on the discharge pipe 13, and the connecting branch pipe 35, The arrangement of the discharge pipe 13, the first connecting pipe 33 and the second connecting branch pipe 35 enables the magnetic biochar in the dust and the magnetic biochar in the slurry to be removed simultaneously, and the speed of separating the magnetic biochar in the soil can be improved. In this embodiment, when the magnetic biochar adsorbed on the electromagnet 24 is taken out, the spiral channel for introducing dust is the same as the discharging mode in example 1, and the magnetic biochar in the spiral channel for introducing slurry can be discharged into the second connecting pipe 34, namely the magnetic biochar collecting box 10, through the connecting branch pipe 35 only by injecting clear water into the slurry pump 21 under the condition that the electromagnet 24 is powered off. In the above operation, the sixth control valve 36 and the seventh control valve 37 are closed, and the eighth control valve 38 and the ninth control valve 39 are opened, and the specific valve opening and closing is determined according to the operation in actual use. The discharge pipe 13 and the slurry feed pipe 20 in example 2 were the same as those in example 1.

Example 3

The difference between the embodiment 3 and the embodiment 1 lies in that the mechanism of the lifting mechanism is different, and in embodiment 2, the lifting mechanism specifically includes a first connecting rod, a second end plate and a second electric cylinder, the first connecting rod and the second connecting rod are hinged end to end, and the other ends of the first connecting rod and the second connecting rod are respectively hinged with the second end plate and the end cover of the tank body 2, the second electric cylinders are symmetrically arranged below the second end plate, and the cylinder body of the second electric cylinder is hinged with the end cover of the tank body 2, the output end of the second electric cylinder is hinged with the hinged part of the first connecting rod and the second connecting rod, the hinged part of the first connecting rod and the second connecting rod is pushed by the second electric cylinder, so that the included angle between the first connecting rod and the second connecting rod is increased, the jacking effect can be realized, the advantage of the connecting rods is that the first connecting rod and the second connecting rod can approach and coincide, that the movement range of the telescopic rod 25 in the vertical direction is larger, the movement stroke of the scraper mechanism in the tank 2 can be increased because the structure is relatively simple and the corresponding drawing is drawn in this embodiment.

It should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used broadly in the present invention, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.