Mica powder filter-pressing purification device and process for mica production wastewater

Abstract

The invention relates to the technical field of filter pressing, in particular to a mica production wastewater and mica powder filter pressing purification device and process, and the mica production wastewater and mica powder filter pressing purification device comprises a rack, a plate frame assembly and a power assembly; a horizontal sliding rod is arranged on the rack; the plate frame assembly comprises a first side plate, a filter plate unit and a second side plate which are sequentially distributed along the sliding rod, and the first side plate and the second side plate are both slidably mounted on the sliding rod; each filter plate unit comprises two pressing plates, the lower sides of the two pressing plates are hinged, the upper sides of the two pressing plates are hinged to the upper sides of the pressing plates of the adjacent filter plate units, and the pressing plates of the filter plate units located on the edges are hinged to the first side plates or the second side plates adjacent to the pressing plates; a filter chamber is defined between the two adjacent pressing plates of the two adjacent filter plate units; an elastic piece is arranged between the two pressing plates of the same filter plate unit, and the elastic piece enables the two pressing plates of the same filter plate unit to be opened, so that the sides, close to the filter cavity, of the pressing plates incline downwards, and filter cakes can fall off conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filter pressing, in particular to a mica production wastewater mica powder filter pressing purification device and process. BACKGROUND

[0002] Mica powder is a non-metallic mineral, widely used in electrical appliances, plastics, coatings, building materials and other industries, and a large amount of mica powder can be left in the production wastewater during the production process. Direct discharge not only pollutes the environment but also causes waste. The wastewater usually needs to be filtered and purified. To improve efficiency, the common filtering method is to filter through a filter pressing device. This method has high efficiency and low water content in the filter residue. However, when the residue is removed, the filter cake is easy to adhere to the filter plate and is not easy to clean. In the prior art, the filter cake is usually removed by backwashing, but the filter cake will be wetted again, which is not convenient for collection. SUMMARY

[0003] The present application provides a mica production wastewater mica powder filter pressing purification device and process to solve the problem that the filter cake of the existing filter pressing device is not easy to fall off.

[0004] The mica production wastewater mica powder filter pressing purification device and process of the present application adopts the following technical scheme: The application relates to a mica production wastewater mica powder pressure filtration purification device which comprises a rack, a plate-and-frame assembly and a power assembly; at least two parallel slide rods located at the same horizontal plane are arranged on the rack, a plurality of pull rings are arranged on the slide rods and can move along the axial direction of the slide rods and are limited to rotate around the horizontal axis; the plate-and-frame assembly comprises a first side plate, a filter plate unit and a second side plate which are sequentially arranged along the axial direction of the slide rods, the first side plate and the second side plate are perpendicular to the axial direction of the slide rods and are fixed to one pull ring respectively; the filter plate unit has a plurality of filter plate units, each filter plate unit comprises two pressing plates, the lower sides of the two pressing plates are hinged, the upper sides of the two pressing plates are hinged to the same pull ring of the pressing plate of the adjacent filter plate unit respectively, and the pressing plate of the filter plate unit located at the edge is hinged to the same pull ring of the first side plate or the second side plate adjacent to the pressing plate; when the first side plate and the second side plate are close to each other to the pressing plates of the plurality of filter plate units, the filter cavities are defined between the two adjacent pressing plates of the adjacent two filter plate units and between the pressing plates and the first side plate or the second side plate, and the two sides of the filter cavities are provided with filter cloths; the first side plate, the second side plate and each pressing plate are provided with a water inlet communicated with the filter cavities and a water outlet communicated with the outside; the two pressing plates of the same filter plate unit are provided with an air bag and an elastic element, the air bag is provided with a first gas hole communicated with the outside and allowing only gas to enter the air bag, and the pressing plate is provided with a second gas hole communicated with the air bag and the filter cavity and allowing only gas to enter the filter cavity from the air bag; the elastic element promotes the two pressing plates of the same filter plate unit to open by a limited angle; the power assembly pushes the first side plate and the second side plate to be close to each other in the pressure filtration state, so that the pressing plates are close to each other, and allows the pressing plates between the first side plate and the second side plate to be far away from each other in the discharging state.

[0005] Optionally, the plate-and-frame assembly has a plurality of plate-and-frame assemblies which are sequentially arranged along the axial direction of the slide rods; the power assembly is located on the side of the plate-and-frame assembly close to the first side plate; the second side plate of the plate-and-frame assembly farthest from the power assembly is fixed to the rack; the second side plate and the first side plate of the adjacent two plate-and-frame assemblies are installed on the same pull ring; the rack is provided with a stop assembly corresponding to the first side plate of the plurality of plate-and-frame assemblies, and the stop assembly is used for hindering or allowing the first side plate to move to the side close to the power assembly; the rack is further provided with a moving assembly used for promoting one or more plate-and-frame assemblies to move to the side close to the power assembly.

[0006] Optionally, the first side plate of each plate-and-frame assembly is provided with a limiting block, the stop assembly comprises a rotary motor and a stop rod, the output shaft of the rotary motor is parallel to the slide rod, the stop rod is located on the side of the limiting block far from the second side plate, and the rotary motor rotates to block or move away from the limiting block.

[0007] Optionally, the rack is provided with a track parallel to the slide rod; the moving assembly comprises a walking frame and a push piece, the walking frame is slidingly installed on the track; the push piece is rotationally installed on the walking frame in a horizontal direction perpendicular to the track, and a torsion spring is arranged between the push piece and the walking frame; the walking frame allows the push piece to rotate from an initial state to a side close to the power assembly and hinders the push piece from rotating from the initial state to a side away from the power assembly, and the walking frame can hit the pressing plate when moving to the side away from the power assembly.

[0008] Optionally, the moving assembly further comprises a mounting block, the mounting block is slidingly installed on the walking frame in a horizontal direction perpendicular to the track, the push piece is rotationally installed on the mounting block, and the torsion spring is arranged between the push piece and the mounting block; the walking frame is provided with a first driving member for driving the mounting block to move horizontally.

[0009] Optionally, the track is provided with a rack arranged along the length direction of the track, a gear wheel engaged with the rack and a second driving member for driving the gear wheel to rotate are rotationally installed on the walking frame, the second driving member drives the gear wheel to rotate, and then the walking frame moves along the track under the engagement of the gear wheel and the rack.

[0010] Optionally, the lower side of each second side plate and pressing plate is provided with a hinge cylinder perpendicular to the slide rod and having a horizontal axis, and the hinge cylinders on the lower sides of the two pressing plates of the same filter plate unit are hinged.

[0011] Optionally, the track is provided with two groups, which are located on the upper side and the lower side of the plate frame assembly respectively, and each group of tracks is provided with a moving assembly; the push piece of the moving assembly located on the upper side of the plate frame assembly is used to push the pull ring on which the first side plate is located to move, the push piece of the moving assembly located on the lower side of the plate frame assembly is an arc-shaped plate with a concave surface facing the side of the power assembly, and is used to fit with the hinge cylinder on the lower side of the second side plate located on the lower side, and then push the second side plate to move.

[0012] Optionally, the pull ring is fixed with a hitting rod, the upper side of each pressing plate is provided with a rotating cylinder for hinging with the pull ring, the rotating cylinder and the pressing plate are connected through a straight plate parallel to the pressing plate, and the hitting rod and the straight plate abut against each other to hinder the pressing plate from further rotating relative to the pull ring after the pressing plate rotates by a limited angle relative to the pull ring.

[0013] A mica production wastewater mica powder pressure filtration purification process utilizes the above-mentioned mica production wastewater mica powder pressure filtration purification device, which comprises: S10, the power assembly extrudes the first side plate and the second side plate to move close to each other, so that the plurality of pressing plates are sequentially fitted between the first side plate and the second side plate; S20, the wastewater is introduced into the plurality of filter chambers through the water inlet at a high pressure flow rate, the filtered mica powder is left in the filter chambers, and the filtered water is discharged from the water outlet; S30, after a certain time of filtration, the power assembly no longer squeezes the first side plate and the second side plate to move close to each other, and the two pressing plates of the same filter plate unit are opened under the action of the elastic member, the side of the pressing plate located in the filter chamber is inclined downward, and the filter cake falls off.

[0014] The beneficial effects of the present application are: in the initial state, the power assembly of the mica production wastewater mica powder filter pressing purification device is in a filter pressing state, and the wastewater enters the filter chamber through the water inlet for filtration. After a period of wastewater filtration, the power assembly is switched to the unloading state, allowing the first side plate and the second side plate to move away from each other, and the two pressing plates of the same filter plate unit are opened under the action of the elastic member between them, i.e., the upper ends move away from each other, so that the side of the pressing plate close to the filter chamber is inclined downward, facilitating the falling of the filter cake, and the elastic member limits the opening angle of the two pressing plates, and when the two pressing plates are opened to the maximum extent, shaking occurs, further promoting the falling of the filter cake. At the same time that the two pressing plates are opened, external gas enters the air bag through the first gas hole, and when the first side plate and the second side plate move close to each other to restore the pressing plate to fit, the air bag is squeezed, and the gas in the air bag enters the filter chamber through the second gas hole, backflushing the filter chamber, further promoting the falling of the residual filter cake, and backflushing and cleaning the filter cloth, reducing its degree of blockage.

[0015] Further, during unloading, the power assembly can first move away from the closest plate frame assembly, and then the stop assembly corresponding to the plate frame assembly allows the first side plate of the plate frame assembly to move, and the multiple pressing plates of the plate frame assembly will quickly open under the action of the elastic member, but due to the limited opening angle of the two pressing plates of the same filter plate unit, vibration will occur when they are opened to the limit, further promoting the falling of the filter cake. And through the cooperation of the moving assembly, the pressing plates of multiple plate frame assemblies are sequentially opened, and a large unloading space does not need to be reserved on the rack, the moving stroke of the plate frame assembly is shortened, and it is more energy-efficient. The mutual movement of the pressing plates is used to inflate the air bag, without the need for an external air pump device, which is simple in structure and energy-saving.

[0016] Further, when the walking frame moves with the push piece, the walking frame allows the push piece to rotate from the initial state to the side close to the power assembly and prevents the push piece from rotating from the initial state to the side away from the power assembly, so that the push piece can hit the lower side of the pressing plate when the walking frame moves away from the power assembly, further promoting the falling of the filter cake. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0018] Figure 1 It is the overall structure schematic view of the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application; Figure 2 It is the front view of the overall structure of the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application; Figure 3 It is the schematic view of the state after one of the plate frame assemblies in the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application is pulled apart; Figure 4 It is the structure schematic view of the moving assembly in the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application; Figure 5 It is the sectional view of Figure 3 ; Figure 6 It is the enlarged view of B in Figure 5 ; Figure 7 It is the half-sectional schematic view of the pressing plate in the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application; Figure 8 It is the structure schematic view of the pull ring in the embodiment of the mica production wastewater mica powder filter pressing purification device of the present application; In the figure: 100, rack; 110, sliding rod; 120, pull ring; 121, impact rod; 130, stop assembly; 131, rotary motor; 132, stop rod; 140, track; 150, water inlet pipe; 200, plate frame assembly; 210, first side plate; 211, limiting block; 220, pressing plate; 221, water inlet; 222, rotating drum; 223, water outlet hole; 224, second air hole; 225, hinged drum; 230, second side plate; 240, air bag; 241, first air hole; 300, power assembly; 400, moving assembly; 410, walking frame; 420, push piece; 430, mounting block; 440, gear. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] The embodiment of the mica production wastewater mica powder filter pressing purification device of the present application, as shown in Figures 1 to 8 , comprises a rack 100, a plate frame assembly 200 and a power assembly 300.

[0021] The rack 100 is provided with at least two parallel slide bars 110 located at the same horizontal plane, and a plurality of pull rings 120 are arranged on the slide bars 110 and move along the axial direction of the slide bars 110 and are limited to rotate around the horizontal axis; specifically, the pull ring 120 and the slide bar 110 are in surface contact, which can limit the rotation of the pull ring 120 around the slide bar 110.

[0022] The plate frame assembly 200 includes a first side plate 210, a filter plate unit and a second side plate 230 which are sequentially distributed along the axial direction of the slide bar 110, the first side plate 210 and the second side plate 230 are both perpendicular to the axial direction of the slide bar 110 and are respectively fixedly connected to a pull ring 120, the first side plate 210 and the second side plate 230 can only move along the axial direction of the slide bar 110 under the limitation of the pull ring 120 and cannot be inclined and rotated relative to the slide bar 110. The filter plate unit has a plurality of filter plate units, each of which includes two press plates 220, the lower sides of the two press plates 220 are hingedly connected, the upper sides of the two press plates 220 are respectively hingedly connected to the press plates 220 of the adjacent filter plate unit of the same pull ring 120, and the press plates 220 of the filter plate unit located at the edge are hingedly connected to the first side plate 210 or the second side plate 230 adjacent thereto by the same pull ring 120; wherein the hinged axes between the two adjacent press plates 220 and the hinged axes between the press plates 220 and the first side plate 210 or the second side plate 230 are all horizontal axes and are perpendicular to the slide bar 110. When the first side plate 210 and the second side plate 230 are close to each other to the press plates 220 of the plurality of filter plate units, the two adjacent press plates 220 of the adjacent two filter plate units and the press plates 220 and the first side plate 210 or the second side plate 230 all define a filter chamber. Each of the press plates 220, the first side plate 210 and the second side plate 230 is provided with a water inlet 221 communicating with the filter chamber and a water outlet hole 223 communicating with the outside. Specifically, each of the press plates 220 is provided with a filter cloth (not shown in the figure) on the side in the filter chamber, wastewater enters the filter chamber from the water inlet 221, is filtered by the filter cloth and is discharged from the water outlet hole 223, and the filter residue remains in the filter chamber to form a filter cake. The rack 100 is provided with a water inlet pipe 150 communicating with the plurality of water inlets 221. The two press plates 220 of the same filter plate unit are provided with an air bag 240 and an elastic member (not shown in the figure), the air bag 240 is provided with a first gas hole 241 communicating with the outside and allowing only gas to enter the air bag 240, and the press plate 220 is provided with a second gas hole 224 communicating the air bag 240 and the filter chamber and allowing only gas to enter the filter chamber from the air bag 240; specifically, a one-way valve is installed at each of the first gas hole 241 and the second gas hole 224. The elastic member promotes the two press plates 220 of the same filter plate unit to open by a limited angle.

[0023] The power assembly 300 presses the first side plate 210 and the second side plate 230 to be close to each other in the filter pressing state, so that the plurality of press plates 220 are close to each other, and allows the press plates 220 between the first side plate 210 and the second side plate 230 to be far away from each other in the discharging state.

[0024] In the initial state, the power assembly 300 is in the filter-pressing state, and the wastewater enters the filter chamber through the water inlet 221 for filtration. After the wastewater is filtered for a period of time, the power assembly 300 is switched to the unloading state, allowing the first side plate 210 and the second side plate 230 to move away from each other, and the two pressing plates 220 of the same filter plate unit are opened under the action of the elastic member therebetween, that is, the upper ends move away from each other, so that the side of the pressing plate 220 close to the filter chamber is inclined downward, facilitating the falling of the filter cake, and the elastic member limits the opening angle of the two pressing plates 220, and when the two pressing plates 220 are opened to the maximum extent, shaking is generated, further facilitating the falling of the filter cake. At the same time that the two pressing plates 220 are opened, external gas enters the air bag 240 from the first gas hole 241. When the first side plate 210 and the second side plate 230 move close to each other to restore the pressing plate 220 to be attached, the air bag 240 is squeezed, and the gas in the air bag 240 enters the filter chamber through the second gas hole 224, back-flushing the filter chamber, further facilitating the falling of the residual filter cake, and back-flushing and cleaning the filter cloth, reducing the degree of clogging thereof.

[0025] In the embodiment, the plate-and-frame assembly 200 has a plurality of plate-and-frame assemblies 200, which are arranged in sequence along the sliding rod 110 in the axial direction. The power assembly 300 and the plate-and-frame assembly 200 are arranged in sequence along the sliding rod 110 in the circumferential direction, and the power assembly 300 is located on the side of the plate-and-frame assembly 200 close to the first side plate 210. The second side plate 230 of the filter plate unit farthest from the power assembly 300 is fixed to the rack 100; the second side plate 230 of the adjacent two filter plate units is installed with the first side plate 210 on the same pull ring 120. The rack 100 is provided with a stop assembly 130 corresponding to the first side plate 210 of the plurality of filter plate units, and the stop assembly 130 is used to hinder or allow the first side plate 210 to move toward the side close to the power assembly 300. The rack 100 is further provided with a moving assembly 400 for facilitating the movement of one or more plate-and-frame assemblies 200 toward the side close to the power assembly 300, and further gradually opening the pressing plates 220 of the plurality of plate-and-frame assemblies 200, so as to facilitate the falling of the filter cake. By arranging a plurality of plate-and-frame assemblies 200, the filtration efficiency is improved, and when the filter cake is cleaned, the cooperation of the stop assembly 130 and the moving assembly 400 allows the plurality of plate-and-frame assemblies 200 to be opened one by one, which can effectively shorten the moving stroke of the plate-and-frame assembly 200 and save the space of the rack 100.

[0026] In the embodiment, the first side plate 210 of each plate-and-frame assembly 200 is provided with a limiting block 211, the stop assembly 130 includes a rotary motor 131 and a stop lever 132, the rotary motor 131 is fixed to the rack 100, and the output shaft of the rotary motor 131 is parallel to the slide rod 110, the stop lever 132 is located on the side of the limiting block 211 close to the power assembly 300, and the rotary motor 131 rotates to make the stop lever 132 block or move away from the limiting block 211. When the stop lever 132 rotates to partially coincide with the limiting block 211 in the axial direction of the slide rod 110, the first side plate 210 where the limiting block 211 is located is prevented from moving to the side close to the power assembly 300, thereby preventing the plurality of pressing plates 220 of the plate-and-frame assembly 200 where the first side plate 210 is located from being opened. When the stop lever 132 rotates to no longer coincide with the limiting block 211 in the axial direction of the slide rod 110, the first side plate 210 where the limiting block 211 is located is allowed to move under the pushing of the adjacent pressing plate 220.

[0027] In the embodiment, the rack 100 is provided with a track 140 parallel to the slide rod 110. The moving assembly 400 includes a walking frame 410 and a push piece 420, and the walking frame 410 is slidingly installed on the track 140. The push piece 420 is rotationally installed on the walking frame 410 in a horizontal direction perpendicular to the track 140, and a torsion spring is arranged between the push piece 420 and the walking frame 410, which urges the push piece 420 to remain in an initial state. The walking frame 410 allows the push piece 420 to rotate from the initial state to the side close to the power assembly 300 and prevents the push piece 420 from rotating from the initial state to the side away from the power assembly 300, and the walking frame 410 can hit the pressing plate 220 when moving to the side away from the power assembly 300. Specifically, the side of the push piece 420 away from the power assembly 300 has a flat surface, and in the initial state, the flat surface of the side of the push piece 420 away from the power assembly 300 is in surface contact with the walking frame 410, thereby preventing the push piece 420 from rotating to the side away from the power assembly 300.

[0028] In the embodiment, the moving assembly 400 further includes a mounting block 430, which is slidingly installed on the walking frame 410 in a horizontal direction perpendicular to the track 140, the push piece 420 is rotationally installed on the mounting block 430, and the torsion spring is arranged between the push piece 420 and the mounting block 430. The walking frame 410 is provided with a first driving member (not shown in the figure) for driving the horizontal movement of the mounting block 430. By arranging the mounting block 430, the push piece 420 is moved in a horizontal direction perpendicular to the track 140, so that the moving assembly 400 is not hindered by the plate-and-frame assembly 200 when moving to the side close to the power assembly 300 for resetting. The first driving member can be a telescopic air cylinder.

[0029] In the embodiment, the track 140 is provided with a rack (not shown in the figure) arranged along the length direction thereof, and the walking frame 410 is rotatably provided with a gear 440 engaged with the rack and a second driving member (not shown in the figure) for driving the gear 440 to rotate. The second driving member drives the gear 440 to rotate, and in turn drives the walking frame 410 to move along the track 140 in engagement with the rack. The second driving member is a reversible motor.

[0030] In the embodiment, the second side plate 230 and the pressing plate 220 are each provided with a vertical sliding rod 110 and a hinge cylinder 225 with a horizontal axis on the lower side thereof. The hinge cylinders 225 on the lower sides of the two pressing plates 220 of the same filter plate unit are hinged, and the hinge cylinders 225 on the lower sides of the adjacent two pressing plates 220 are coaxially arranged in sequence in the horizontal direction perpendicular to the sliding rod 110.

[0031] In the embodiment, the track 140 is provided with two groups, which are respectively arranged on the upper side and the lower side of the plate frame assembly 200, and each group of the track 140 is provided with a moving assembly 400. The tab 420 of the moving assembly 400 arranged on the upper side of the plate frame assembly 200 is used to push the pull ring 120 on which the first side plate 210 is arranged to move. The tab 420 of the moving assembly 400 arranged on the lower side of the plate frame assembly 200 is an arc-shaped plate with a concave surface facing the power assembly 300, which is used to be in close contact with the hinge cylinder 225 on the lower side of the second side plate 230 arranged on the lower side, and in turn to push the second side plate 230 to move.

[0032] In the embodiment, the power assembly 300 includes a telescopic cylinder, which is mounted on the rack 100, and the output shaft thereof is parallel to the sliding rod 110 and connected with the first side plate 210 of the plate frame assembly 200 closest to the power assembly 300.

[0033] In the embodiment, the pull ring 120 is fixed with an impact rod 121, and each pressing plate 220 is provided with a rotating cylinder 222 for being hinged with the pull ring 120 on the upper side thereof. The rotating cylinder 222 and the pressing plate 220 are connected through a straight plate parallel to the pressing plate 220. When the pressing plate 220 rotates relative to the pull ring 120 by a limited angle, the impact rod 121 abuts against the straight plate to hinder the further rotation of the pressing plate 220 relative to the pull ring 120. Since the two pressing plates 220 are quickly separated and opened under the action of the elastic member, the impact rod 121 can impact the pressing plate 220 through the straight plate when abutting against the straight plate, so as to vibrate the pressing plate 220.

[0034] In use, the power assembly 300 is in a pressure filtration state, that is, the telescopic cylinder pushes the first side plate 210 connected thereto to move, so that the first side plate 210, the pressing plate 220 and the second side plate 230 of the plurality of plate-and-frame assemblies 200 are sequentially adhered and compressed, and the elastic members between the two pressing plates 220 of the same filter plate unit are compressed. The rotating motor 131 of the plurality of stop assemblies 130 drives the stop rod 132 to rotate, so that the stop rod 132 is rotated to partially coincide with the corresponding limiting block 211 in the axial direction of the slide rod 110, thereby preventing the first side plate 210 where the limiting block 211 is located from moving towards the side close to the power assembly 300. Between the two adjacent pressing plates 220 of the adjacent two filter plate units, and between the pressing plate 220 and the first side plate 210 or the second side plate 230, a filter chamber is defined. The production wastewater containing mica powder is continuously introduced into the filter chamber through the water inlet pipe 150 and the water inlet 221, the wastewater is filtered through the filter cloth and discharged from the water outlet hole 223, and the filter residue containing mica powder is left in the filter chamber to form a filter cake. For the sake of convenience, three plate-and-frame assemblies 200 are provided, from close to the power assembly 300 to far away from the power assembly 300, which are respectively a first assembly, a second assembly and a third assembly, and the first side plate 210 connected with the power assembly 300 is the first assembly. After working for a period of time, the stop rod 132 corresponding to the first side plate 210 connected with the power assembly 300 is rotated to disengage from the limiting block 211, and the power assembly 300 is in a discharging state, that is, the telescopic cylinder drives the first side plate 210 connected thereto to move reversely, thereby providing space for the plurality of pressing plates 220 of the first assembly to be opened. The two pressing plates 220 of the plurality of filter plate units of the first assembly are opened under the action of the elastic member, that is, the upper ends of the two pressing plates 220 of the same filter plate unit move away from each other, so that the side of the pressing plate 220 close to the filter chamber is inclined downward, thereby facilitating the filter cake to fall off. Moreover, the elastic member limits the opening angle of the two pressing plates 220, and when the two pressing plates 220 are opened to the maximum extent, shaking occurs, thereby further facilitating the filter cake to fall off. Since part of the filter cake adheres to the pressing plate 220, the weight of the pressing plate 220 is different, thereby causing the opening angle of the two pressing plates 220 of different filter plate units to be different. Specifically, the less filter cake adhering to the pressing plate 220, the lighter the weight of the pressing plate 220, and the greater the opening angle of the pressing plate 220 under the action of the elastic member, and vice versa, thereby causing the hinge cylinder 225 on the lower side of the pressing plate 220 to be lower.

[0035] In the initial state, the moving assembly 400 is on the side of the first assembly close to the power assembly 300. When the moving assembly 400 moves away from the power assembly 300, the hinged cylinder 225 on the lower side of the pressing plate 220 is in the moving path of the push piece 420. By setting the height of the push piece 420 in the initial state, the push piece 420 on the lower side of the plate frame assembly 200 will only hit the hinged cylinder 225 at a lower position when passing the lower side of the first assembly, further causing the pressing plate 220 to vibrate. When the push piece 420 moves to the side plate 230 of the first assembly away from the power assembly 300, the push pieces 420 of the two moving assemblies 400 on the upper and lower sides of the plate frame assembly 200 respectively push the side plate 230 of the first assembly to move towards the power assembly 300, and squeeze the first side plate 210, the pressing plate 220 and the second side plate 230 of the first assembly to adhere to each other, providing space for the multiple pressing plates 220 of the second assembly to open. Then the stop rod 132 corresponding to the limiting block 211 on the first side plate 210 of the second assembly rotates to disengage from the limiting block 211, and the two pressing plates 220 of the multiple filter plate units of the second assembly open under the action of the elastic member, that is, the upper ends of the two pressing plates 220 of the same filter plate unit move away from each other, so that the side of the pressing plate 220 close to the filter chamber tilts downward, facilitating the falling of the filter cake. After the filter residue in the filter chamber of the second assembly falls, the moving assembly 400 continues to move away from the power assembly 300, and when the push piece 420 moves to the side plate 230 of the second assembly away from the power assembly 300, the push pieces 420 of the two moving assemblies 400 on the upper and lower sides of the plate frame assembly 200 respectively push the side plate 230 of the second assembly to move towards the power assembly 300, and squeeze the first assembly and the second assembly, and provide space for the multiple pressing plates 220 of the third assembly to open. Then the stop rod 132 corresponding to the limiting block 211 on the first side plate 210 of the third assembly rotates to disengage from the limiting block 211, so that the multiple pressing plates 220 of the third assembly open, facilitating the falling of the filter cake. After the filter cake of the three plate frame assemblies 200 falls, the mounting block 430 of the moving assembly 400 moves under the action of the first driving member, and the hinged cylinder 225 on the lower side of the pressing plate 220 and the first side plate 210 is staggered, so that the push piece 420 is not hindered by the hinged cylinder 225 when the push piece 420 moves to the side plate 230 of the second assembly away from the power assembly 300. After the moving assembly 400 moves to the reset position, the power assembly 300 switches to the filter pressing state again, and the multiple plate frame assemblies 200 are squeezed to adhere to each other, and the stop rods 132 of the multiple stop assemblies 130 rotate to the position of blocking the movement of the first side plate 210 again, so as to facilitate the next filter pressing.

[0036] A mica production wastewater mica powder filter pressing purification process utilizes the above-mentioned mica production wastewater mica powder filter pressing purification device, which comprises: S10, the power assembly 300 extrudes the first side plate 210 and the second side plate 230 to each other, and the plurality of pressing plates 220 are sequentially attached between the first side plate 210 and the second side plate 230; S20, the wastewater is passed through the water inlet 221 at a high pressure flow rate to enter the plurality of filtering chambers, the filtered mica powder is left in the filtering chamber, and the filtered water is discharged from the water outlet hole 223; S30, after a certain time of filtering, the power assembly 300 no longer extrudes the first side plate 210 and the second side plate 230 to each other, the two pressing plates 220 of the same filter plate unit are opened under the action of the elastic member, the pressing plate 220 located on the side of the filtering chamber is downwardly inclined, and the filter cake falls off.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A mica production wastewater mica powder filter pressing purification device, characterized in that: The filter press comprises a frame, a plate-and-frame assembly and a power assembly. The frame is provided with at least two parallel slide bars located at the same horizontal plane, and a plurality of pull rings are arranged on the slide bars and move along the axial direction of the slide bars and are limited to rotate around the horizontal axis. The plate-and-frame assembly comprises a first side plate, a filter plate unit and a second side plate which are sequentially arranged along the axial direction of the slide bars, the first side plate and the second side plate are perpendicular to the axial direction of the slide bars and are fixed to one pull ring respectively, the filter plate unit comprises a plurality of filter plate units, each filter plate unit comprises two pressing plates which are hingedly connected at the lower side and are hingedly connected at the upper side to the pressing plates of the adjacent filter plate unit on the same pull ring respectively, the pressing plates of the filter plate unit located at the edge are hingedly connected to the same pull ring as the adjacent first side plate or second side plate, when the first side plate and the second side plate are close to each other to the pressing plates of the plurality of filter plate units are attached, the filter chamber is defined between the two adjacent pressing plates of the adjacent two filter plate units and between the pressing plate and the first side plate or the second side plate, and the filter cloth is arranged on the two sides of the filter chamber, the first side plate, the second side plate and each pressing plate are provided with a water inlet which is in communication with the filter chamber and a water outlet which is in communication with the outside, the two pressing plates of the same filter plate unit are provided with an air bag and an elastic element, the air bag is provided with a first air hole which is in communication with the outside and allows only gas to enter the air bag, the pressing plate is provided with a second air hole which is in communication with the air bag and the filter chamber and allows only gas to enter the filter chamber from the air bag, and the elastic element promotes the two pressing plates of the same filter plate unit to open a limited angle. The power assembly presses the first side plate and the second side plate to move close to each other in the filter pressing state, and allows the pressing plates between the first side plate and the second side plate to move away from each other in the discharge state.

2. The mica production wastewater mica powder pressure filtration purification device according to claim 1, characterized in that: The plate-and-frame assembly comprises a plurality of plate-and-frame assemblies which are sequentially arranged along the axial direction of the slide bars, the power assembly is located on the side of the plate-and-frame assembly close to the first side plate, the second side plate of the plate-and-frame assembly farthest from the power assembly is fixed to the frame, the second side plate and the first side plate of the adjacent two plate-and-frame assemblies are installed on the same pull ring, the frame is provided with a stop assembly corresponding to the first side plate of the plurality of plate-and-frame assemblies, the stop assembly is used to hinder or allow the first side plate to move to the side close to the power assembly, and the frame is further provided with a moving assembly which is used to promote one or more plate-and-frame assemblies to move to the side close to the power assembly.

3. The mica production wastewater mica powder pressure filtration purification device according to claim 2, characterized in that: The first side plate of each plate-and-frame assembly is provided with a limiting block, the stop assembly comprises a rotary motor and a stop rod, the output shaft of the rotary motor is parallel to the slide bar, the stop rod is located on the side of the limiting block away from the second side plate, and the rotary motor rotates to block or move away from the limiting block.

4. The mica production wastewater mica powder pressure filtration purification device according to claim 2, characterized in that: The frame is provided with a track parallel to the slide bar, and the moving assembly comprises a walking frame and a push piece, the walking frame is slidingly installed on the track, the push piece is rotationally arranged on the walking frame in the horizontal direction perpendicular to the track and is provided with a torsion spring between the walking frame and the push piece, the walking frame allows the push piece to rotate from the initial state to the side close to the power assembly and hinders the push piece to rotate from the initial state to the side away from the power assembly, and the walking frame can hit the pressing plate when moving to the side away from the power assembly.

5. The mica production wastewater mica powder pressure filtration purification device according to claim 4, characterized in that: The moving assembly further comprises a mounting block slidingly mounted on the walking frame in a horizontal direction perpendicular to the track, a push piece rotatably mounted on the mounting block, and a torsion spring arranged between the push piece and the mounting block; the walking frame is provided with a first driving member for driving the mounting block to move horizontally.

6. The mica production wastewater mica powder pressure filtration purification device according to claim 4, characterized in that: The track is provided with a rack arranged in a length direction thereof, and the walking frame is rotatably provided with a gear wheel engaged with the rack and a second driving member for driving the gear wheel to rotate; the second driving member drives the gear wheel to rotate, and in turn drives the walking frame to move along the track under engagement with the rack.

7. The mica production wastewater mica powder pressure filtration purification device according to claim 4, characterized in that: Each second side plate and pressing plate is provided with a vertical sliding rod and a hinge cylinder with an axis horizontal to the lower side of the pressing plate; the hinge cylinders of the two pressing plates of the same filter plate unit are hinged.

8. The mica production wastewater mica powder pressure filtration purification device according to claim 7, characterized in that: The track is provided with two groups, respectively located on the upper side and the lower side of the plate frame assembly, and each group of tracks is provided with a moving assembly; the push piece of the moving assembly located on the upper side of the plate frame assembly is used to push the pull ring on which the first side plate is located to move, and the push piece of the moving assembly located on the lower side of the plate frame assembly is an arc-shaped plate with a concave surface facing the power assembly side, used to fit with the hinge cylinder on the lower side of the second side plate located on the lower side, and in turn push the second side plate to move.

9. The mica production wastewater mica powder pressure filtration purification device according to claim 1, characterized in that: The pull ring is fixed with an impact rod, and each pressing plate is provided with a rotating cylinder for hinging with the pull ring; the rotating cylinder and the pressing plate are connected by a straight plate parallel to the pressing plate, and the pressing plate is limited to rotate a certain angle relative to the pull ring, and the impact rod and the straight plate abut to hinder the pressing plate from further rotating relative to the pull ring.

10. A mica production wastewater mica powder pressure filtration purification process using the mica production wastewater mica powder pressure filtration purification device according to any one of claims 1 to 9, characterized in that, The method comprises the steps of: S10, the power assembly extrudes the first side plate and the second side plate to move close to each other, so that the plurality of pressing plates are sequentially fitted between the first side plate and the second side plate; S20, the wastewater is introduced into the plurality of filter chambers through the water inlet at a high pressure flow rate, and the filtered mica powder is left in the filter chamber, and the filtered water is discharged from the water outlet; S30, after a certain period of time, the power assembly no longer extrudes the first side plate and the second side plate to move close to each other, and the two pressing plates of the same filter plate unit are opened under the action of the elastic member, and the side of the pressing plate located in the filter chamber is inclined downward, and the filter cake falls off.

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