阅读说明：本技术 一种滚压式转鼓脱水机 (Rolling type drum dehydrator ) 是由 唐志超 朱忆人 潘政尧 徐诗铭 徐丽娟 张晓燕 于 2020-04-24 设计创作，主要内容包括：本发明公开了一种滚压式转鼓脱水机,包括机架、转鼓、压料器、挡环、进料机构、驱动机构以及卸料机构,所述转鼓是对液体透滤的,所述转鼓固定在机架上并由驱动机构驱动转动,所述转鼓呈卧倒状且倾斜设置,若干个所述挡环从左至右依次固定在转鼓上并将转鼓的内腔分隔成若干个压料区间,每一个所述压料区间内均放置有若干个压料器,所述进料机构的出料口从转鼓的较高侧上端伸入最靠近进料机构的压料区间内,所述卸料机构位于转鼓的上端或者侧面,整体自清洁效果好,造价低,物料脱水效果优异。(The invention discloses a rolling type drum dehydrator which comprises a rack, a drum, material pressing devices, baffle rings, a feeding mechanism, a driving mechanism and a discharging mechanism, wherein the drum is used for filtering liquid, the drum is fixed on the rack and driven by the driving mechanism to rotate, the drum is horizontally arranged and obliquely arranged, a plurality of baffle rings are sequentially fixed on the drum from left to right and divide an inner cavity of the drum into a plurality of material pressing sections, the material pressing devices are arranged in each material pressing section, a discharging port of the feeding mechanism extends into the material pressing section closest to the feeding mechanism from the upper end of the higher side of the drum, and the discharging mechanism is positioned at the upper end or the side surface of the drum.)

1. A rolling type drum dehydrator is characterized in that: including frame, rotary drum (1), eccentric swage (2), fender ring (3), feed mechanism (4), actuating mechanism (5) and shedding mechanism (6), rotary drum (1) is to liquid percolation, rotary drum (1) is fixed in the frame and is rotated by actuating mechanism (5) drive, rotary drum (1) is the form of lying down and the slope sets up, a plurality of keep off ring (3) from a left side to the right side and fix in proper order on rotary drum (1) and separate into a plurality of material pressing interval (11) with the inner chamber of rotary drum (1), each a plurality of eccentric swage (2) have all been placed in material pressing interval (11), the discharge gate of feed mechanism (4) stretches into in material pressing interval (11) that is the closest to feed mechanism (4) from the higher side upper end of rotary drum (1), shedding mechanism (6) are located the upper end or the side of rotary drum.

2. A roll-pressed drum dehydrator according to claim 1, wherein: the drum (1) is a plate-type drum made of metal or nonmetal plates with a plurality of through holes or a frame-type drum composed of a plurality of metal or nonmetal circular frames and a plurality of axial fixing beams, a liquid permeable liner is paved on the drum surface of the drum (1), a filter medium is covered on the liquid permeable liner, and the liquid permeable liner and the filter medium are fixed on the drum (1) through hoop rings.

3. A roll-pressed drum dehydrator according to claim 2, wherein: the aperture ratio of the through holes on the rotary drum (1) is 0.5-90%.

4. A roll-pressed drum dehydrator according to claim 2, wherein: the liquid permeable liner is a grid with the gap width of 0.1-10 mm or a metal or nonmetal net with the mesh number of 4-40 meshes, the filter medium is a metal or nonmetal liquid permeable filter material, and the filter medium is a polyester woven mesh, a non-woven fabric, a felt, a filter cloth, a metal wire mesh, a metal pore plate or a metal seam sieve plate.

5. A roll-pressed drum dehydrator according to claim 2, wherein: when the rotary drum (1) is a plate-type rotary drum, the discharging mechanism (6) is a blowpipe, and when the rotary drum (1) is a frame-type rotary drum, the discharging mechanism (6) is a blowpipe or a rapping device, and the blowing direction of the blowpipe faces the filter cake.

6. A roll-pressed drum dehydrator according to claim 1, wherein: the included angle between the central axis of the rotary drum (1) and the horizontal plane is 1-20 degrees, the lower end of the lower side of the rotary drum (1) is further provided with a discharging mechanism, and the discharging mechanism comprises a discharging hopper for receiving filter cakes discharged from the rotary drum (1) and a spiral output machine or a belt conveyor for conveying the filter cakes away.

7. A roll-pressed drum dehydrator according to claim 1, wherein: the material pressing device (2) is a pressing roller or a pressing ball.

8. A roll-pressed drum dehydrator according to claim 1, wherein: the baffle ring (3) comprises a ring body (31) and a support rod (32), the outer edge of the ring body (31) is fixed with the rotary drum (1), and the support rod (32) sequentially penetrates through the circle center of the ring body (31) and two ends of the support rod are fixed with the ring body (31) respectively.

9. A roll-pressed drum dehydrator according to claim 1, wherein: the feeding mechanism (4) is a feeding pipe or a screw conveyor.

10. A roll-pressed drum dehydrator according to claim 1, wherein: the roller driving mechanism is characterized in that the driving mechanism (5) is a shaft driving unit or a roller driving unit, the shaft driving unit comprises a central shaft, a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft to rotate through the shaft speed reducer, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers (51), and the roller motor drives one of the carrier rollers (51) to rotate through the roller speed reducer.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of dewaterers, in particular to the technical field of rolling type rotary drum dewaterers.

[ background of the invention ]

A drum type dehydrator is a filtering device widely used in the field of solid-liquid separation, and comprises a drum filter, a vacuum drum filter, a centrifugal drum filter and the like. The rotary drum filter has the advantages of compact equipment, good operating environment, no need of manual intervention and the like, but the problems of small filtering pressure and high water content of filter cakes of the dehydration filtering equipment generally exist at the same time.

In order to increase the dewatering pressure of the drum, an involute drum eccentric extrusion filter press is disclosed in the Chinese patent application No. 201710341223.8. The involute type drum eccentric extrusion filter press can perform pressurization feeding, vacuum suction and mechanical extrusion on slurry, the moisture content of discharged filter cakes is low, the filter cakes can be conveniently subjected to back blowing and self-discharging, and the work efficiency is improved. However, in the invention, only the rotary drum rotates, and the lower shell is fixed, so that the adhesion force of the filter cake on the surface of the static lower shell is improved along with the gradual increase of the concentration of the filter cake, so that the resistance of the filter cake to advance is gradually increased, and finally, a large amount of power is used for overcoming the advancing resistance instead of pressing, the pressing effect is influenced, and the energy consumption is high. In addition, another drawback of the invention is the presence of only one dewatering drum, which has a small filtering area and limits the processing capacity.

In order to increase the filtering area of the rotary drum, a double-drum rotary drum filter is disclosed in chinese patent application No. 201910516619.0. The patent has the advantage of improving the single-layer metal net covered on the rotary drum into a double-layer metal net with different meshes so as to increase the filtering area. However, since the filter screen of the present invention is fixed to the same rotating member, it is impossible to perform forced dehydration with a variable volume, and therefore, this apparatus can be applied only under conditions of high water content in concentration filtration, and cannot satisfy the requirement of high-pressure deep dehydration.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides a rolling type drum dehydrator which is good in integral self-cleaning effect, low in manufacturing cost and excellent in material dehydration effect.

In order to achieve the purpose, the invention provides a rolling type drum dehydrator, which comprises a rack, a rotary drum, material pressing devices, baffle rings, a feeding mechanism, a driving mechanism and a discharging mechanism, wherein the rotary drum is used for filtering liquid, the rotary drum is fixed on the rack and driven by the driving mechanism to rotate, the rotary drum is horizontally arranged and obliquely arranged, a plurality of baffle rings are sequentially fixed on the rotary drum from left to right and divide an inner cavity of the rotary drum into a plurality of material pressing intervals, the material pressing devices are arranged in each material pressing interval, a discharging port of the feeding mechanism extends into the material pressing interval closest to the feeding mechanism from the upper end of the higher side of the rotary drum, and the discharging mechanism is positioned at the upper end or the side face of the rotary drum.

Preferably, the drum is a plate-type drum made of metal or nonmetal plates with a plurality of through holes or a frame-type drum composed of a plurality of metal or nonmetal circular frames and a plurality of axial fixing beams, a liquid permeable liner is paved on the drum surface of the drum, a filter medium is covered on the liquid permeable liner, and the liquid permeable liner and the filter medium are fixed on the drum through hoops.

Preferably, the aperture ratio of the through holes on the rotary drum is 0.5-90%, and further, the aperture ratio of the plate-type rotary drum is 20-25%, and the frame-type rotary drum is mainly used for occasions with higher dehydration pressure, such as the application occasions that municipal sludge is further dehydrated from 85% to 60%, and the aperture ratio of the frame-type rotary drum is 50-70%, and is mainly used for occasions with larger dehydration amount, such as the application occasions that municipal sludge is further dehydrated from 98% to 85%.

Preferably, the liquid permeable liner is a grating with a gap width of 0.1-10 mm or a metal or nonmetal net with a mesh number of 4-40 meshes, further, the grating gap width is 2-5 mm, the metal or nonmetal net with a mesh number of 8-16 meshes, the filter medium is a metal or nonmetal liquid permeable filter material, the filter medium is a polyester woven net, a non-woven fabric, a felt, a filter cloth, a metal wire mesh, a metal pore plate or a metal slit sieve plate, further, the filter cloth is selected for municipal sludge, the metal sieve plate is selected for papermaking sludge, and the polyester woven net is selected for building sludge.

Preferably, when the rotary drum is a plate-type rotary drum, the discharging mechanism is a blowing pipe, when the rotary drum is a frame-type rotary drum, the discharging mechanism is a blowing pipe or a rapping device, the blowing direction of the blowing pipe faces the filter cake and can be arranged in the rotary drum or outside the rotary drum, and the blowing pipe and the rapping device can separate the filter cake adhered to the filter medium from the filter medium through pneumatic force and rapping respectively.

Preferably, an included angle between a central axis of the rotary drum and the horizontal plane is 1-20 degrees, further, the included angle is 7 degrees, a discharging mechanism is further arranged at the lower end of the lower side of the rotary drum, and the discharging mechanism comprises a discharging hopper for receiving filter cakes discharged from the rotary drum and a spiral output machine or a belt conveyor for conveying the filter cakes away.

Preferably, the pressing devices are pressing rolls or pressing balls, further, the diameter, weight and number of the pressing rolls or pressing balls arranged in each pressing section are flexibly adjusted according to the dewatering operation requirement, for example, the pressing section close to the material inlet end is provided with the pressing rolls or pressing balls with lighter weight, and the pressing section close to the material outlet end is provided with the pressing rolls or pressing balls with heavier weight, so that the gradual pressure-increasing pressing of the material can be realized, and for example, the pressing efficiency can be improved by increasing the number of the pressing rolls or pressing balls and increasing the probability and the number of times that the material is pressed.

Preferably, the baffle ring comprises a ring body and support rods, the outer edge of the ring body is fixed with the rotary drum, the support rods sequentially penetrate through the circle center of the ring body, and two ends of the support rods are respectively fixed with the ring body.

Preferably, the feeding mechanism is a feeding pipe or a screw conveyor.

Preferably, the driving mechanism is a shaft driving unit or a roller driving unit, the shaft driving unit comprises a central shaft, a shaft speed reducer and a shaft motor, the shaft motor drives the central shaft to rotate through the shaft speed reducer, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers, and the roller motor drives one of the carrier rollers to rotate through the roller speed reducer.

The invention has the beneficial effects that: the invention divides the inner cavity of the rotary drum into a plurality of material pressing intervals by arranging the baffle ring, and a plurality of material pressing devices, namely press rollers or press balls, are arranged in each material pressing interval, the rotary drum is driven to rotate by the driving mechanism, and the material pressing devices are driven to do planetary motion in the material pressing intervals by friction force, so that the materials are subjected to a plurality of times of extrusion forced dehydration and peeling cycles when passing through the plurality of material pressing intervals in sequence until being finally discharged.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

FIG. 1 is a schematic view of the assembly of a drum, a binder, a baffle ring and a feeding mechanism in a rolling drum dehydrator according to the present invention.

Fig. 2 is a schematic structural diagram of the first embodiment.

In the figure: 1-rotary drum, 11-material pressing interval, 2-material pressing device, 3-baffle ring, 31-ring body, 32-support rod, 4-feeding mechanism, 5-driving mechanism, 51-carrier roller and 6-discharging mechanism.

[ detailed description ] embodiments

Referring to fig. 1 and 2, the rolling type drum dehydrator comprises a frame, a drum 1, a material pressing device 2, a baffle ring 3, a feeding mechanism 4, a driving mechanism 5 and a discharging mechanism 6, wherein the drum 1 is used for filtering liquid, the drum 1 is fixed on the frame 1 and is driven by the driving mechanism 5 to rotate, the drum 1 is arranged in a horizontal and inclined manner, a plurality of baffle rings 3 are sequentially fixed on the drum 1 from left to right and divide an inner cavity of the drum 1 into a plurality of material pressing sections 11, a plurality of material pressing devices 2 are placed in each material pressing section 11, a discharge hole of the feeding mechanism 4 extends into the material pressing section 11 closest to the feeding mechanism 4 from the upper end of the higher side of the drum 1, and the discharging mechanism 6 is located at the upper end of the drum 1.

The drum is characterized in that the drum 1 is provided with a plurality of through holes, a liquid permeable liner is laid on the drum surface, a filter medium covers the liquid permeable liner, and the liquid permeable liner and the filter medium are fixed on the drum through hoops.

The aperture ratio of the through holes on the rotary drum 1 is 20-25%.

The liquid permeable liner is a grid with the gap width of 2-5 mm or a metal or nonmetal net with the mesh number of 8-16 meshes, the filter medium is a metal or nonmetal liquid permeable filter material, and the filter medium is a polyester woven mesh, a non-woven fabric, a felt, a filter cloth, a metal wire mesh, a metal pore plate or a metal seam sieve plate.

The included angle between the central axis of the rotary drum 1 and the horizontal plane is 7 degrees, the lower end of the lower side of the rotary drum 1 is also provided with a discharging mechanism, and the discharging mechanism comprises a discharging hopper for receiving filter cakes discharged from the rotary drum 1 and a spiral output machine or a belt conveyor for conveying the filter cakes away.

The material pressing device 2 is a pressing roller or a pressing ball, wherein the size of the pressing roller is D50-400.

The baffle ring 3 comprises a ring body 31 and a support rod 32, the outer edge of the ring body 31 is fixed with the rotary drum 1, and the support rod 32 sequentially penetrates through the circle center of the ring body 31 and two ends of the support rod are fixed with the ring body 31 respectively.

The feeding mechanism 4 is a feeding pipe, wherein the feeding pipe is a D125 pipe, and the wall thickness is 5 mm.

The driving mechanism 5 is a roller driving unit, the roller driving unit comprises a roller speed reducer, a roller motor and a plurality of carrier rollers 51, and the roller motor drives one of the carrier rollers 51 to rotate through the roller speed reducer. Wherein, the idler 51 is a D350 roller.

The discharging mechanism 6 is a blowpipe, the blowing direction of the blowpipe is from top to bottom, and the blowpipe is a D50 pipe.

The working process of the invention is as follows:

in the working process, the feeding pipe conveys the materials to the material pressing section 11 at the highest position, the roller motor drives one of the carrier rollers 51 to rotate through the roller speed reducer so as to drive the rotary drum 1 to rotate, and the press roller or the press ball moves along with the carrier roller or the press ball in the material pressing section 11 due to friction force so as to be matched with the rotary drum 1 to continuously extrude the materials and forcibly dewater the materials. The rotating press rollers or press balls rotate in the same direction and move integrally in a planetary shape, and the contact surfaces of every two press rollers or press balls move in opposite directions, so that filter cakes stained on the surfaces of the press rollers can be gradually rubbed down through mutual friction. Meanwhile, the blowpipe continuously blows air from top to bottom, and can blow down filter cakes blocked on the rotary drum 1. The filter cake stripped off enters the next pressing section 11 from the pressing section 11 at a higher position due to gravity, is subjected to forced dehydration and stripping again, and is finally discharged from the rotary drum 1 and conveyed away by the discharging mechanism after repeated times. The rotating speed of the rotary drum 1 should be kept within a certain range, and the highest rotating speed is just not higher than the highest point of the pressing section 11 when the compression roller moves along the inner wall of the pressing section 11.

The invention divides the inner cavity of the rotary drum into a plurality of material pressing intervals by arranging the baffle ring, and a plurality of material pressing devices, namely press rollers or press balls, are arranged in each material pressing interval, the rotary drum is driven to rotate by the driving mechanism, and the material pressing devices are driven to do planetary motion in the material pressing intervals by friction force, so that the materials are subjected to a plurality of times of extrusion forced dehydration and peeling cycles when passing through the plurality of material pressing intervals in sequence until being finally discharged.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.