Two-way parallel feeding dual-purpose filtering mechanism and dual-purpose chamber type automatic filter press

Abstract

The present invention discloses a two-way parallel feeding dual-purpose filtering mechanism and a two-purpose chamber type automatic filter press; the filtering mechanism includes a thrust plate, a parallel feeding filter plate, a filter cloth, a non-porous grouping partition, a clamping plate, and four hole end sealing rings; the key points of the innovative scheme are: a plurality of adjacent filter plates constitute a large group of parallel feeding filter chambers, and a grouping partition is added in the middle of a large group of filter chambers to separate them into two small groups of filter chambers; at the same time, a mobile high-pressure feeding hose is added at the tail of the machine, so that it has the performance of two-way parallel feeding from the head and the tail of the machine, and the function of filtering two materials at the same time by one machine (one machine for two purposes). The two-purpose chamber type automatic filter press uses the filtering mechanism, and the material passes through the main feeding channel of the filter chamber and is simultaneously diverted to each filter chamber, so that the feeding pressure of each filter chamber is balanced and the feeding is uniform; it solves the technical problems such as one machine cannot filter two materials at the same time and one-way series feeding is uneven, and improves the filtering effect, production efficiency and economic benefits of filtering multiple materials.

Description

Technical Field

[0001] The invention belongs to the technical field of chamber-type automatic filter presses (patent classification number B01D25 / 12), and relates to a dual-purpose chamber-type filtering mechanism. Background Art

[0002] A filter press is an intermittently operated multi-chamber pressurized (with the help of a pressure pump or compressed air) filtration equipment; a chamber filter press is a low-pressure feed static filtration equipment that consists of a group of chamber-shaped series filter chambers (each chamber is connected in series) formed by the concave parts of multiple adjacent double-sided symmetrical chamber filter plates, and the adjacent plate and frame sealing surfaces press the filter cloth to achieve the sealing of the filter chamber; it is suitable for solid-liquid separation of various suspensions (mixtures of liquid and solid particles), but cannot filter two materials at the same time.

[0003] The chamber filter press is a PLC intelligently controlled chamber filter press that integrates mechanics, electricity and hydraulics. It is mainly composed of a frame, a clamping mechanism, a chamber filtration mechanism, a plate pulling mechanism, a cloth washing mechanism, a liquid receiving and flipping mechanism, a hydraulic drive mechanism, a PLC program control system, etc. Through PLC control, a single operation cycle (filter plate clamping, feeding and filtering, flipping the plate to receive liquid, washing and purification, squeezing and dehydrating + back-blowing materials, blowing and purifying, plate pulling and cake unloading, and filter cloth cleaning) can be completed automatically with one button.

[0004] The chamber filter mechanism is the core mechanism of the filter press. It is mainly composed of multiple chamber filter plates and filter cloths. The filter plates are covered with filter cloths on both sides. When pressing and dehydrating is required, a group of filter plates consists of diaphragm filter plates and chamber filter plates. Multiple filter plates are arranged and installed on the beams on both sides of the filter press. When the filter plates are pressed, the filter plates are pressed by the pressing mechanism under the control of PLC. The adjacent filter plates sandwiching the filter cloths constitute the filtering mechanism, that is, a group of series filter chambers with one-way series feeding (each filter chamber is connected in series through the feed hole). The basic principle of filtration is: through the pressure pump, the material enters each filter chamber one by one from the feed hole on the middle part (cavity) of the thrust plate. The solid particles are trapped in the filter chamber to form a filter cake because their particle size is larger than the pore size of the filter medium (filter cloth). The filtrate passes through the filter cloth and flows out from the outlet below the filter plate. When the material is filtered, the filter plate is released, and the pressing mechanism automatically reverses to return, releases (pull apart) the push plate and the filter plate to unload the cake.

[0005] The existing box-type filtering mechanism has the following defects: Since the filtering mechanism is a group of series-connected filter chambers, it cannot filter two materials at the same time and cannot meet the growing needs of the chemical industry and other industries - filtering two materials at the same time with one machine (one machine with two uses), saving space, reducing costs and increasing efficiency, is an urgent problem to be solved; at the same time, due to the one-way series feeding from the feed hole of the fixed thrust plate at the head of the machine (because it is difficult to feed from the opening of the movable clamping plate at the tail of the machine), there is a pressure loss behind the one-way series feeding, the pressure in each filter chamber is unbalanced, the feed is uneven, the filter cake thickness and dryness are different, and the liquid discharge speed is different, which affects the overall filtering effect and production efficiency. It is a long-standing problem of the filter press. Summary of the invention

[0006] The purpose of the present invention is to overcome the defects of the existing box-type filtering mechanism, solve the technical problems such as one machine cannot filter two materials at the same time, one-way series feeding is uneven, and provide a two-way parallel feeding dual-purpose filtering mechanism and a corresponding two-purpose box-type automatic filter press; two-way parallel feeding type - that is, a two-way parallel feeding method from the head and the tail of the machine (two-way parallel feeding), dual-purpose - the function of one machine to filter two materials at the same time (one machine with two uses), and the two functions of one machine with two uses and one machine with single use can be flexibly converted.

[0007] The innovative technical solution adopted by the present invention to solve the problems of the prior art is: a two-way parallel feeding dual-purpose filtering mechanism (hereinafter referred to as: filtering mechanism). The key points of the overall technical solution are: compared with the prior art, the innovative overall structure has outstanding substantial characteristics in that the existing large group of one-way series feeding filter chambers are innovated into two small groups of two-way parallel feeding filter chambers, that is, a non-porous grouping partition is added in the middle of a large group of filter chambers to divide it into two, and separate it into two small groups of filter chambers; at the same time, a mobile high-pressure hose is added at the tail of the machine, and its two ends are respectively connected to the feed port of the tail clamping plate and the pressure pump feeding pipeline; thereby, the filtering mechanism has the performance of two-way parallel feeding from the head and the tail of the machine, and the function of filtering two materials at the same time by one machine (one machine for two purposes); if the non-porous grouping partition is removed, the function of filtering one material by two-way parallel feeding is restored (one machine for single use); therefore, the technical problems such as one machine cannot filter two materials at the same time and one-way series feeding is uneven are solved.

[0008] The specific design scheme of the filtering mechanism is: it is mainly composed of fixed thrust plate, parallel feed filter plate, filter cloth, non-porous grouping partition, movable clamping plate, feed hole end sealing ring, undercurrent hole end sealing ring and other parts; the filter plate is a box-type parallel feed undercurrent effluent filter plate, the four corner non-cavity parts have different functional holes, among which the upper left corner hole is the filter chamber feed channel and feed diversion hole, and the lower right corner hole is the undercurrent effluent channel, the thrust plate and the clamping plate are anti-corrosion combined single-sided filter plates, the four corner non-cavity parts have the same functional holes as the filter plate, the non-porous grouping partition is a four-corner non-porous blind filter plate, and the feed hole end sealing ring is a lip sealing ring.

[0009] The connection relationship of the main components is: the filter cloth covers the filter plate and serves as the filter medium and the filter frame sealing surface that seals the adjacent filter plates; the sealing ring at the feed hole end is installed in the sealing groove at the feed hole end of the filter plate; the sealing ring at the underflow hole end is installed in the sealing groove at the underflow hole end of the filter plate; the recesses of multiple adjacent parallel feed filter plates constitute a large group of parallel feed filter chambers; the filter chamber feed channels of multiple filter plates, thrust plates and pressure plates are connected to form a closed filter chamber feed total channel, and the underflow effluent channels of the three are connected to form a closed underflow effluent total channel; the feed diversion holes of each filter plate connect the feed total channel and the filter chamber; the non-porous grouping partition divides a large group of parallel feed filter chambers into two small groups of parallel feed filter chambers, and the filter chamber separation position is adapted to the ratio of the two materials; the pressure plate feed port is externally connected using a mobile high-pressure hose, and the thrust plate feed port is externally connected using a stainless steel pipe, thereby forming a two-way parallel feed type dual-purpose filtering mechanism.

[0010] The principle of parallel feeding is: because the parallel feeding filter plate has a filter chamber feed channel, a feed diversion hole, a feed hole end sealing groove, and a filter frame sealing surface; the filter chamber feed channel is located in the non-cavity part of the upper left corner hole of the filter plate (the series feed hole is located in the cavity part of the middle of the filter plate), the feed hole end face and the dark flow hole end face are flush with the filter frame sealing surface, and the feed hole end faces and dark flow hole end faces of adjacent filter plates are sealed with rubber sealing rings respectively; the concave parts of multiple adjacent parallel feeding filter plates constitute a group of parallel feeding filter chambers, and the filter chamber feed channels of multiple filter plates are connected to form a closed filter chamber feed main channel, and the feed diversion holes of each filter plate connect the feed main channel and the filter chamber. The material passes through the filter chamber feed main channel and is diverted to each filter chamber at the same time (multiple chambers in parallel), so that the feed pressure of each filter chamber is balanced, the feed is uniform, and the liquid discharge is faster, thereby improving the simultaneous filtration effect and production efficiency of multiple materials.

[0011] The present invention also provides a dual-purpose chamber type automatic filter press, which uses the bidirectional parallel feeding dual-purpose filtering mechanism provided by the present invention. The dual-purpose filter press is mainly composed of a frame, a clamping mechanism, a bidirectional parallel feeding dual-purpose filtering mechanism (the present invention), a plate pulling mechanism, a cloth washing mechanism, a liquid receiving flap mechanism, a hydraulic driving mechanism, a PLC program control system and the like.

[0012] The bidirectional parallel feeding dual-purpose filtering mechanism provided by the present invention has the advantages of one machine for dual use, space saving, balanced bidirectional parallel pressure, uniform feeding, consistent thickness and dryness of filter cake, and faster liquid discharge. The beneficial effect is that it breaks through the existing technology of single machine use and one-way series feeding, meets the urgent need of one machine for dual use and one machine for filtering two materials at the same time in the chemical industry and other industries, improves the filtering effect, production efficiency and economic benefits of filtering multiple materials, and fills the gap in my country's bidirectional parallel feeding dual-purpose filter press. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the bidirectional parallel feeding dual-purpose filtering mechanism of the present invention.

[0014] Figure 2 It is a schematic diagram of the parallel feed filter plate of the bidirectional parallel feed dual-purpose filter mechanism of the present invention.

[0015] Figure 3 The present invention is a schematic diagram of the general assembly of a dual-purpose chamber type automatic filter press using a bidirectional parallel feeding dual-purpose filtering mechanism.

[0016] Figure numerals: 1-fixed thrust plate (head plate), 2-parallel feed filter plate, 3-parallel feed filter chamber, 4-holeless grouping partition, 5-filter cloth (filter medium), 6-feed hole end sealing ring, 7-filter chamber feed total channel, 8-mobile clamping plate (machine tail push plate), 9-underflow effluent total channel, 10-underflow hole end sealing ring, 11-filter chamber feed channel, 12-feed hole end sealing groove, 13-feed diverter hole, 14-filter cloth support, 15-filter frame sealing surface, 16-filter mesh point, 17-backblowing air diverter hole, 18-backblowing hole end sealing groove, 19 backblowing air channel, 20-single chamber converging effluent hole, 21-underflow hole end sealing groove, 22-underflow effluent channel, 23-washing (blow-drying) channel, 24-washing hole end sealing groove, 25-washing (blow-drying) diverter hole, 26-Double main beams on both sides (also called cross beams), 27-Pulling plate mechanism (double pulling plate trolleys on both sides), 28-Cloth washing mechanism, 29-Pressing mechanism (double cylinder push-pull mechanism), 30-Hydraulic pump station, 31-PLC program control system, 32-Four machine legs, 33 Liquid receiving flap mechanism. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the present invention is described below in conjunction with the drawings in the embodiments of the bidirectional parallel feeding dual-purpose filtering mechanism and the dual-purpose chamber automatic filter press of the present invention. Obviously, the described embodiments are only a part of the preferred embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work, such as filtering mechanisms with the same one-machine-two-purpose principle, the same bidirectional parallel feeding method, and different liquid discharge methods, all belong to the protection scope of the present invention.

[0018] Example 1

[0019] A two-way parallel feeding dual-purpose filtering mechanism, the key points of the innovative overall implementation plan are: the recessed parts of a plurality of adjacent parallel feeding filter plates 2 form a large group of parallel feeding filter chambers 3, a non-porous grouping partition plate 4 is added in the middle of the large group of filter chambers 3 to divide it into two, that is, two small groups of filter chambers 3; at the same time, a mobile high-pressure hose is added at the tail of the machine, and its two ends are respectively connected to the feed port of the tail clamping plate and the pressure pump feed pipeline; thereby, the filtering mechanism has the performance of two-way parallel feeding from the head and the tail of the machine, and the function of filtering two materials at the same time by one machine (one machine for two purposes); if the non-porous grouping partition plate 4 is removed, the function of two-way parallel feeding and filtering one material is restored (one machine for single use); the material passes through the total feeding channel 7 of the filter chamber and is simultaneously diverted to each filter chamber 3 (multiple chambers in parallel), so that the feeding pressure of each filter chamber 3 is balanced, the feeding is uniform, and the liquid discharge is faster, thereby improving the simultaneous filtering effect of multiple materials and the production efficiency.

[0020] The specific implementation scheme is: the filtering mechanism is mainly composed of a fixed thrust plate 1, a parallel feed filter plate 2, a non-porous grouping partition 4, a filter cloth 5, a feed hole end sealing ring 6, a movable pressing plate 8, a dark flow hole end sealing ring 10, a washing hole end sealing ring, a backflush hole end sealing ring and other components; the detailed description is as follows:

[0021] The parallel feeding method is a parallel feeding filter chamber 3 formed by a parallel feeding filter plate 2. The filter chambers 3 are not connected in series. The material passes through the filter chamber feeding main channel 7 and is simultaneously diverted to each filter chamber 3 through each feed diversion hole 13. Its application scope is the same as that of the existing serial feeding method, and is applicable to filter presses of various types (such as box type and plate-frame type), various characteristics (such as open flow and dark flow effluent mode), and various properties (such as diaphragm pressing, back-blowing channel, filter cake washing, and drying filter cake). In order to illustrate the application of the parallel feeding method in the filtering mechanism, the box type parallel feeding dark flow effluent filter plate 2 is preferably used as an example.

[0022] The parallel feed filter plate 2 is a box-type parallel feed underflow effluent filter plate 2, which is the core component of the filtering mechanism. The non-cavity parts at the four corners have different functional holes, wherein the upper left corner has a filter chamber feed channel 11, a feed hole end sealing groove 12, and a feed diversion hole 13, the upper right corner has a backblowing air diversion hole 17, a backblowing hole end sealing groove 18, and a backblowing air channel 19, the lower right corner has a single-chamber converging effluent hole 20, an underflow hole end sealing groove 21, and an underflow effluent channel 22, the lower left corner has a washing and drying channel 23, a washing hole end sealing groove 24, and a washing and drying diversion hole 25, the periphery has a filter frame sealing surface 15, the cavity part has a filter cloth support 14, a filter mesh point 16, and support handles are installed on both sides.

[0023] The fixed thrust plate 1 and the movable clamping plate 8 are anti-corrosion combined single-sided filter plates, and the non-cavity parts at the four corners have the same functional holes as the filter plate 2; the thrust plate 1 is fixed on the two legs 32 of the machine head, and is mainly used for positioning when the clamping plate 8 pushes the filter plate 2, and a feed inlet is set in the direction of the machine head; the clamping plate 8 has a double cylinder piston rod connection setting and rollers on both sides, and is movably installed on the tracks of the cross beams 26 on both sides of the tail, and is mainly used for clamping the filter plate 2, and a feed inlet is set in the direction of the tail.

[0024] The non-porous grouping partition 4 is a blind filter plate without holes at four corners, which is the theme characteristic element of the filtering mechanism, and is used to divide a large group of parallel feed filter chambers 3 into two small groups of parallel feed filter chambers 3, so that it has the function of one machine and two small groups of parallel feed filter chambers 3 to filter two materials at the same time (one machine with two uses), and the separation position of the filter chamber 3 is adapted to the ratio of the two materials; if the non-porous grouping partition 4 is removed, the function of a large group of parallel feed filter chambers 3 to filter one material is restored (one machine with single use).

[0025] The feed hole end seal ring 6 is a lip seal ring having a lip seal surface (including a lip opening and a lip edge), and the lip opening is deformed under the action of the high-pressure fluid, so that the lip edge is close to the seal surface to achieve sealing. The underflow hole, washing hole, and backflush hole end seal rings 10 are the same rubber seal rings.

[0026] The filter mechanism is assembled as follows: the filter cloth 5 covers the filter plate 2 and serves as a filter medium and a filter frame sealing surface 15 that seals the adjacent filter plate 2; four hole end sealing rings 6 and 10 are installed in the corresponding hole end sealing grooves 12, 18, 21, and 24 of the filter plate 2; the recessed parts of multiple adjacent parallel feed filter plates 2 constitute a large group of parallel feed filter chambers 3; the filter chamber feed channels 11 of the multiple filter plates 2, the thrust plate 1, and the pressing plate 8 are connected to form a closed filter chamber feed total channel 7; the backwash air channels 19 of the three are connected to form a closed backwash air total channel; the washing and drying channels 23 of the three are connected to form a closed backwash air total channel. They are connected to form a closed washing and drying main channel, and are rotated to serve as undercurrent effluent auxiliary channels. The undercurrent effluent channels 22 of the three are connected to form a closed undercurrent effluent main channel 9; the feed diversion holes 13 of each filter plate 2 are connected to the feed main channel 7 and the filter chamber 3; the non-porous grouping partition plate 4 divides a large group of parallel feed filter chambers 3 into two small groups of parallel feed filter chambers 3, and the separation position of the filter chamber 3 is adapted to the ratio of the two materials; the feed port of the clamping plate 8 is externally connected using a mobile high-pressure hose, and the feed port of the thrust plate 1 is externally connected using a stainless steel pipe, thereby forming a two-way parallel feed type dual-purpose filtering mechanism.

[0027] The invention provides a two-way parallel feeding dual-purpose filtering mechanism, which solves the technical problems of the existing chamber filter, such as one machine cannot filter two materials at the same time and one-way series feeding is uneven, and achieves remarkable technical effects.

[0028] Example 2

[0029] A dual-purpose chamber type automatic filter press uses the bidirectional parallel feeding dual-purpose filtering mechanism provided by the present invention. The dual-purpose filter press is mainly composed of a frame, a bidirectional parallel feeding dual-purpose filtering mechanism (including 1, 2, 4, 5, 6, 8, 10 of the present invention), a plate pulling mechanism 27, a cloth washing mechanism 28, a pressing mechanism 29, a hydraulic pump station 30, a PLC program control system 31, a liquid receiving flap mechanism 33, a hydraulic drive mechanism and the like. The dual-purpose filtering mechanism is the core mechanism of the filter press, and is mainly composed of a fixed thrust plate 1, a parallel feeding filter plate 2, a non-porous grouping partition plate 4, a filter cloth 5, a movable pressing plate 8, four types of hole end sealing rings 6, 10 and other components. The technical parts shared by the present invention and the prior art are manufactured in accordance with the current standards of my country's machinery industry "Chamber filter press and plate and frame filter press Part 1: Type and basic parameters", "Part 2: Technical conditions", "Part 3: Filter plate" JB / T4333.1, 2, 3-2013.

[0030] Assembly of dual-purpose filtering mechanism: thrust plate 1 is fixedly mounted on two machine legs 32 of the machine head, pressing plate 8 is movably mounted on the tracks of double main beams 26 on both sides of the machine tail, filter plates 2 are arranged and mounted on the tracks of double main beams 26 on both sides of the frame, filter cloth 5 covers filter plates 2 and serves as filtering medium and sealing filter frame sealing surface 15 of adjacent filter plates 2, four kinds of hole end sealing rings 6, 10, etc. are mounted in corresponding hole end sealing grooves 12, 18, 21, 24 of filter plates 2, and the concave parts of multiple adjacent parallel feed filter plates 2 constitute a large group of parallel feed filter chambers 3; filter chamber feeding, backblowing air, washing of multiple filter plates 2, thrust plate 1 and pressing plate 8 The four channels 7, 11, 19 and 23 of the blow-drying and dark-flow effluent are respectively connected to form four corresponding closed total channels 7, 9, etc.; the feed diversion hole 13 of each filter plate 2 is connected to the feed total channel 7 and the filter chamber 3; the non-porous grouping partition 4 divides a large group of parallel feed filter chambers 3 into two small groups of parallel feed filter chambers 3, and the separation position of the filter chamber 3 is adapted to the ratio of the two materials; the feed port on the clamping plate 8 is externally connected using a mobile high-pressure hose (wire mesh lined rubber hose), and the feed port on the thrust plate 1 is externally connected using a stainless steel pipe; the clamping plate 8 is connected to the double-cylinder piston rod; thereby completing the assembly of the dual-purpose filtering mechanism part of the dual-purpose filter press.

[0031] The single complete operation cycle of the dual-purpose filter press is: filter plate pressing, feeding and filtering, plate flipping to receive liquid, washing and purification, squeezing and dehydrating + back-blowing materials, blowing and purification, plate pulling and cake unloading, and filter cloth cleaning; through the PLC control system, a single operation cycle is automatically completed with one button; intermittent reciprocating cycle work to achieve solid-liquid separation of two batch materials (suspensions). The three working processes of filter plate pressing, feeding and filtering, and plate pulling and cake unloading, which are closely related to the core technology of the present invention, are described in more detail as follows:

[0032] 1. Pressing the filter plates: The handles on both sides of the multiple filter plates 2 and a non-porous grouping partition plate 4 are supported on the tracks of the double main beams 26 on both sides of the frame. The filter plates 2 and the non-porous grouping partition plates 4 are pressed at one time by the double hydraulic cylinders of the pressing mechanism 29. The concave parts of the adjacent filter plates 2 sandwiching the filter cloth 5 form two groups of parallel filter chambers 3, and form a two-way parallel feeding dual-purpose filtering mechanism.

[0033] 2. Feeding and filtering: Use a feeding pressure pump to transport the solid-liquid mixture to two sets of parallel filter chambers 3 in both directions through the stainless steel pipe at the head and the mobile high-pressure hose at the tail, and through the filter chamber feed main channel 7, so that a pressure difference is formed on both sides of the filter cloth 5, and low-pressure static filtration is performed by maintaining the pressure. At the same time, the liquid receiving flap 33 is automatically closed, and the particles in the material retained by the filter cloth 5 form a filter cake in the filter chamber. The filtrate of the two sets of filter chambers 3 passes through the filter cloth 5 and flows out from the dark flow effluent main channel 9 of each group and enters the dual-purpose liquid collecting box.

[0034] 3. Pull plate to unload cakes: After washing and purification, squeezing and dehydration + back-blowing materials, and drying and purification are completed, the liquid receiving flap 33 is automatically opened (opened), and the double hydraulic cylinders automatically change direction to loosen the clamping plate 8, and the filter plate 2 is pulled apart by the plate pulling trolley 27, and the filter cakes of the two groups of filter chambers 3 fall into the dual-purpose cake collecting bin respectively, realizing gravity cake unloading; when fast cake unloading is required, the filter plate vibration device is automatically started according to the program to make the filter cake fall quickly; one machine has two uses, and the two groups of filtering mechanisms share a set of clamping mechanism 29, hydraulic pump station 30, etc., reducing costs and increasing efficiency.

[0035] The dual-purpose chamber type automatic filter press of the present invention has the advantages of one machine for dual use, saving space, balanced pressure in two-way parallel advance, uniform feeding, consistent thickness and dryness of filter cake, and faster liquid discharge after repeated experiments; it meets the urgent need of one machine for dual use and one machine for filtering two materials at the same time in the chemical industry and other industries, and improves the filtering effect, production efficiency and economic benefits of filtering multiple materials.

Claims

1. A two-way parallel feed dual-purpose filtering mechanism, comprising a fixed thrust plate, a parallel feed filter plate, a filter cloth, a non-porous grouping partition, a movable pressing plate, a feed hole end sealing ring, and a dark flow hole end sealing ring; characterized in that: The parallel feed filter plate is a box-type parallel feed dark flow effluent filter plate, and the four corner non-cavity parts have different functional holes, among which the upper left corner hole is the filter chamber feed channel and feed diversion hole, and the lower right corner hole is the dark flow effluent channel; the fixed thrust plate and the movable clamping plate are anti-corrosion combined single-sided filter plates, and the four corner non-cavity parts have the same functional holes as the parallel feed filter plate; the non-porous grouping partition is a four-corner non-porous blind filter plate; the feed hole end sealing ring is a lip-shaped sealing ring; the mutual connection relationship is :The filter cloth covers the filter plate and serves as the filter medium and the filter frame sealing surface of the adjacent filter plate. The sealing ring at the feed hole end and the sealing ring at the underflow hole end are respectively installed in the corresponding hole end sealing grooves of the filter plate. The concave parts of multiple adjacent parallel feed filter plates constitute a large group of parallel feed filter chambers. The filter chamber feed channels of multiple filter plates, thrust plates and pressing plates are connected to form a closed filter chamber feed total channel, and the underflow effluent channels of the three are connected to form a closed underflow effluent total channel. The feed diversion holes of each filter plate are connected to the feed total channel and the filter chamber. A non-porous grouping partition separates a large group of parallel feed filter chambers into two small groups of parallel feed filter chambers; The feed diversion holes of each filter plate are connected to the main feed channel and the filter chamber; the feed port of the compression plate is connected to the outside by a mobile high-pressure hose, and the feed port of the thrust plate is connected to the outside by a stainless steel pipe, thus forming a two-way parallel feed dual-purpose filtering mechanism that can filter two materials at the same time.

2. A dual-purpose chamber type automatic filter press, comprising a frame, a pressing mechanism, a dual-purpose filtering mechanism, a plate pulling mechanism, a cloth washing mechanism, a liquid receiving flap mechanism, a hydraulic driving mechanism, and a PLC program control system; characterized in that: The dual-purpose filtering mechanism is the bidirectional parallel feeding dual-purpose filtering mechanism described in claim 1; it can automatically turn over the plate to receive liquid, automatically pull the plate to unload cakes and automatically clean the filter cloth.

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