CN111603814A - Two-way parallel feeding type dual-purpose filter mechanism and dual-purpose box-type automatic filter press - Google Patents

Abstract

The invention discloses a bidirectional parallel feeding type dual-purpose filter mechanism and a dual-purpose box-type automatic filter press; the filter mechanism comprises a thrust plate, a parallel feeding filter plate, a filter cloth, a non-porous grouping partition, a Tight plate, four kinds of hole end sealing rings; the main point of the innovative plan is: a large group of parallel feed filter chambers are formed by multiple adjacent filter plates, and a grouping partition is added in the middle of a large group of filter chambers to separate them into two Group filter room; at the same time, a mobile high-pressure feeding hose is added at the end of the machine, so that it has the performance of bidirectional parallel feeding from the head and tail of the machine, and the function of filtering two materials at the same time in one machine (one machine for two purposes) . Dual-purpose box-type automatic filter press, using this filter mechanism, the material passes through the main feeding channel of the filter chamber, and is divided into each filter chamber at the same time, so that the feeding pressure of each filter chamber is balanced and the feeding is uniform; it solves the problem that one machine cannot filter at the same time The technical problems of two kinds of materials, uneven feeding in one-way series, etc., improve the filtering effect, production efficiency and economic benefit of filtering various materials.

Description

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

technical field

The invention belongs to the technical field of a box-type automatic filter press (patent classification number B01D25/12), and relates to a dual-purpose box-type filter mechanism.

Background technique

A filter press is an intermittently operated multi-chamber pressurized (by means of a pressure pump or compressed air) filtration equipment; a chamber filter press is composed of multiple adjacent double-sided symmetrical chamber filter plates The concave part forms a group of box-shaped series-connected filter chambers (each filter chamber is connected in series), and the adjacent plate and frame sealing surfaces press the filter cloth to realize the low-pressure feed static filtration equipment for sealing the filter chamber; it is suitable for various suspensions (liquid and solid particles). The solid-liquid separation of the mixture), but the two materials cannot be filtered at the same time.

The box-type automatic filter press is a box-type filter press that integrates mechanics, electricity and liquid, and is controlled by PLC intelligently. It is composed of liquid contact flap mechanism, hydraulic drive mechanism, PLC program control system and other parts; through PLC control, a single operation cycle (filter plate pressing, feeding and filtering, flap contacting liquid, washing and purification, pressing and dehydration + backflushing materials, Drying and purification, pulling plate to unload cake, cleaning filter cloth) can be completed automatically with one key.

The box-type filter mechanism is the core mechanism of the filter press. It is mainly composed of multiple box-type filter plates and filter cloth. Both sides of the filter plate are covered by filter cloth. Composed of box filter plate. Multiple filter plates are arranged and installed on the beams on both sides of the filter press. When the filter plates are pressed, under the control of the PLC, the filter plates are pressed by the pressing mechanism, and the adjacent filter plates sandwiching the filter cloth constitute the filter mechanism. That is, a group of unidirectional series-connected filter chambers fed in series (each filter chamber is connected in series through feeding holes). The basic principle of filtration is: through the pressure pump, the material enters each filter chamber one by one from the feeding hole in the middle part of the thrust plate (cavity part), and the solid particles are larger than the filter medium (filter cloth) because of their particle size. The pore size of the filter is trapped in the filter chamber to form a filter cake, and the filtrate passes through the filter cloth and flows out from the liquid outlet below the filter plate; when the filter plate is released after the material is filtered, the pressing mechanism automatically reverses the direction and returns, loosening (pulling) Open) push plate and filter plate to unload cake.

The existing box-type filter mechanism has the following defects: because the filter mechanism is a series of filter chambers, it cannot filter two materials at the same time, and cannot meet the growing needs of the chemical industry and other industries - one machine filters two materials at the same time (one machine It is an urgent problem that needs 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 (because the hole is opened from the mobile press plate at the tail) Difficulty in feeding), there is a pressure loss behind the one-way string feeding, the pressure of each filter chamber is unbalanced, the feeding is uneven, the thickness of the filter cake is different in dryness and wetness, and the liquid discharge speed is different, which affects the overall filtration effect and production efficiency. The biggest problem with filters.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the defects of the existing box-type filter mechanism, solve the technical problems such as the inability of one machine to filter two materials at the same time, the uneven feeding in one-way series, and provide a two-way parallel feeding type dual-purpose filter mechanism and corresponding Dual-purpose box-type automatic filter press; two-way parallel feeding type - that is, the method of two-way parallel feeding from the head and the tail of the machine (two-way parallel feeding), dual-purpose - the function of one machine filtering two materials at the same time (one machine Dual-use), one-machine dual-use and one-machine single-use two functions can be flexibly converted.

The innovative technical scheme adopted by the present invention to solve the problems of the prior art is: a two-way parallel feeding type dual-purpose filtering mechanism (hereinafter referred to as: filtering mechanism). It has a prominent substantive feature in that the existing large group of one-way series feed filter chambers is innovated into two groups of two-way parallel feed filter chambers, that is, a non-porous group partition is added in the middle of a large group 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 compression plate and the feeding pipeline of the pressure pump; Therefore, the filter 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 (one machine for two purposes); if the non-porous grouping partition is removed, the two-way parallel feeding is restored. The function of filtering one material (one machine is used alone); therefore, it solves the technical problems that one machine cannot filter two materials at the same time, and the one-way series feeding is uneven.

The specific design scheme of the filter mechanism is: mainly composed of a fixed thrust plate, a parallel feed filter plate, a filter cloth, a non-porous grouping partition, a mobile pressing plate, a sealing ring at the end of the feeding hole, and a sealing ring at the end of the undercurrent hole, etc. Parts and components; the filter plate is a box-type parallel feeding dark effluent filter plate, and the non-cavity part of the four corners has different functional holes, of which the upper left corner hole is the filter chamber feed channel and feed distribution hole, and the lower right corner hole is the dark outflow hole. The liquid channel, the thrust plate and the pressing plate are anti-corrosion combined single-sided filter plates. The non-cavity parts of the four corners have the same functional holes as the filter plates respectively. The non-porous grouping partitions are blind filter plates without four corners. The end seal is a lip seal.

The connection relationship of the main parts is: the filter cloth wraps the filter plate as the filter medium and the sealing surface of the filter frame to seal the adjacent filter plate, and the sealing ring at the end of the feed hole is installed in the sealing groove of the end of the feed hole of the filter plate. The underflow hole end sealing ring is installed in the underflow hole end sealing end sealing groove of the filter plate, and the concave parts of multiple adjacent parallel feed filter plates form a large group of parallel feed filter chambers; multiple filter plates, thrust plates and pressure The filter chamber feed channels of the three tight plates are connected to form a closed filter chamber feed general channel, and the three dark effluent channels are connected to form a closed dark effluent general channel; the feed distribution holes of each filter plate are connected to the feed general channel. Channels and filter chambers; non-porous grouping partitions divide a large group of parallel feed filter chambers into two groups of parallel feed filter chambers, and the separation position of the filter chambers is adapted to the ratio of the two materials; the feed port of the compression plate is moved using Type high-pressure hose is externally connected, and the feed port of the thrust plate is externally connected by a stainless steel pipe, thus forming a two-way parallel feeding type dual-purpose filter mechanism.

The principle of parallel feeding is: because the filter plates are fed in parallel, there are filter chamber feed channels, feed diversion holes, feed hole end sealing grooves, and filter frame sealing surfaces; the filter chamber feed channel is located in the upper left corner of the filter plate. The hole is not empty Cavity (the series feed hole is located in the cavity in the middle of the filter plate), the end face of the feed hole and the end face of the underflow hole are flush with the sealing surface of the filter frame, and the end face of the feed hole and the end face of the underflow hole of the adjacent filter plate are respectively equipped with rubber sealing rings Sealing; the concave parts of multiple adjacent parallel feed filter plates form a group of parallel feed filter chambers, the filter chamber feed channels of the multiple filter plates are connected to form a closed filter chamber feed channel, and the feed of each filter plate is divided into streams The holes communicate with the general feed channel and the filter chamber. The material passes through the main feeding channel of the filter chamber, and is divided into each filter chamber at the same time (multi-chamber parallel), so that the feeding pressure of each filter chamber is balanced, the feeding is uniform, and the liquid is discharged faster, thereby improving the simultaneous filtering effect and production efficiency of various materials. .

The present invention also provides a dual-purpose box-type automatic filter press, which uses the bidirectional parallel feeding type dual-purpose filter mechanism provided by the present invention. The dual-purpose filter press mainly consists of a frame, a pressing mechanism, a two-way parallel feeding type dual-purpose filter mechanism (the present invention), a pulling plate mechanism, a cloth washing mechanism, a liquid-contacting flap mechanism, a hydraulic drive mechanism, and a PLC program-controlled mechanism. system and other components.

The two-way parallel feeding type dual-purpose filter mechanism provided by the present invention has the advantages of having one machine for two purposes, saving space, balanced pressure in the two-way parallel feeding, uniform feeding, consistent dry and wet thickness of the filter cake, and faster liquid discharge. The advantages and beneficial effects are that it breaks through the existing technology of one machine for single use and one-way series feeding, meets the urgent need of one machine for two purposes and one machine simultaneously filters two materials in the chemical industry and other industries, and improves the filtration of various materials. The effect, production efficiency and economic benefit have filled the gap of our country's two-way parallel feeding dual-purpose filter press.

Description of drawings

Fig. 1 is the schematic diagram of the two-way parallel feeding type dual-purpose filter mechanism of the present invention.

2 is a schematic diagram of the parallel feeding filter plate of the bidirectional parallel feeding type dual-purpose filter mechanism of the present invention.

3 is a schematic diagram of the general assembly of the dual-purpose box-type automatic filter press of the present invention using a bidirectional parallel feeding type dual-purpose filter mechanism.

Reference numerals: 1-fixed thrust plate (head plate), 2-parallel feed filter plate, 3-parallel feed filter chamber, 4-non-porous grouping partition, 5-filter cloth (filter medium), 6- Sealing ring at the end of the feed hole, 7- The general feeding channel of the filter chamber, 8- The movable pressing plate (tail push plate), 9- The general channel of the underflow liquid, 10- The sealing ring at the end of the underflow hole, 11- Filter chamber feed channel, 12-feed hole end sealing groove, 13-feed distribution hole, 14-filter cloth support, 15-filter frame sealing surface, 16-filter mesh point, 17-back blow air distribution hole, 18- Backflushing hole end sealing groove, 19 backflushing air channel, 20-single-chamber confluence effluent hole, 21-underflow hole end sealing groove, 22-underflow liquid channel, 23-washing (drying) channel, 24-washing hole End sealing groove, 25-washing (drying) shunt hole, 26-double main beam on both sides (also known as beam), 27-pulling plate mechanism (double pulling plate trolley on both sides), 28-cloth washing mechanism, 29-pressing Tightening mechanism (double cylinder push-pull mechanism), 30-hydraulic pump station, 31-PLC program control system, 32-four machine legs, 33-liquid contact flap mechanism.

Detailed ways

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the bidirectional parallel feeding type dual-purpose filter mechanism and the dual-purpose box-type automatic filter press of the present invention. Obviously, the described embodiments are only the present invention. Part of the preferred embodiments of the invention, but not all of the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, such as the same principle of one machine with two uses, two-way parallel connection Filtering mechanisms with the same feeding method and different liquid discharging methods all belong to the protection scope of the present invention.

Example 1

A two-way parallel feeding type dual-purpose filter mechanism, the main points of the innovative overall implementation are: the concave parts of a plurality of adjacent parallel feeding filter plates 2 form a large group of parallel feeding filter chambers 3, in a large group of filter chambers 3 A non-porous grouping partition 4 is added in the middle, so that one is divided into two and divided into two groups of filter chambers 3; at the same time, a mobile high-pressure hose is added at the rear of the machine, and its two ends are respectively connected to the tail pressing plate for feeding port and pressure pump feeding pipeline; thus, the filter mechanism has the performance of bidirectional parallel feeding from the head and tail of the machine, and the function of filtering two materials at the same time (one machine for two purposes); if the non-porous grouping is removed Separator 4, the function of two-way parallel feeding and filtering of one material is restored (one machine is used alone); 3. The feeding pressure is balanced, the feeding is uniform, and the liquid is discharged faster, thereby improving the simultaneous filtering effect and production efficiency of various materials.

The specific embodiment is: the filter mechanism is mainly composed of a fixed thrust plate 1, a parallel feeding filter plate 2, a non-porous grouping partition 4, a filter cloth 5, a sealing ring 6 at the end of the feeding hole, a movable pressing plate 8, It is composed of underflow hole end sealing ring 10, washing hole end sealing ring, blowback hole end sealing ring and other components; the details are as follows:

The parallel feeding method is to use the parallel feeding filter 3 chambers formed by the parallel feeding filter plates 2. The filter chambers 3 are not connected in series. Diverted to each filter chamber 3; its application range is the same as that of the existing series feeding method, suitable for various types (such as box type and plate and frame type), various characteristics (such as open flow and dark effluent method) , Filter press with various characteristics (such as diaphragm pressing, back blowing feed channel, filter cake washing, filter cake drying). In order to illustrate the application of the parallel feeding method in the filtering mechanism, it is preferable to take the box-type parallel feeding dark effluent filter plate 2 as an example.

The parallel feeding filter plate 2 is a box-type parallel feeding dark effluent filter plate 2, which is the core element of the filtering mechanism. The non-cavity parts of the four corners have different functional holes, and the upper left corner has a filter chamber feeding channel. 11. The feed hole end sealing groove 12, the feed distribution hole 13, the upper right corner has a backflushing air distribution hole 17, the backflushing hole end sealing groove 18, the backflushing air channel 19, and the lower right corner has a single-chamber outflow hole 20 , undercurrent hole end sealing groove 21, dark effluent channel 22, with washing and drying channel 23, washing hole end sealing groove 24, washing and drying shunt hole 25 in the lower left corner, filter frame sealing surface 15 around the periphery, cavity part It has filter cloth support 14, filter mesh point 16, and support handles are installed on both sides.

The fixed thrust plate 1 and the movable pressing plate 8 are anti-corrosion combined single-sided filter plates, and the non-cavity parts of the four corners respectively have the same functional holes as the filter plate 2; the thrust plate 1 is fixed on the machine head. The two machine legs 32 are mainly used for positioning when the pressing plate 8 pushes the filter plate 2, and the feeding inlet is set in the direction of the machine head; The rails of the beams 26 on both sides of the tail are mainly used for pressing the filter plate 2, and the feed inlet is provided in the direction of the tail.

The described non-porous grouping partition 4 is a four-corner non-porous blind filter plate, which is the theme feature element of the filter mechanism, and is used to separate a large group of parallel feed filter chambers 3 into two small groups of parallel feed filter chambers 3, It has the function of one machine and two groups in parallel feeding the filter chamber 3 to filter two materials at the same time (one machine for two purposes), and the separation position of the filter chamber 3 is adapted to the ratio of the two materials; Then, the function of a large group of parallel feeding filter chambers 3 to filter one material is restored (one machine is used alone).

The sealing ring 6 at the end of the feed hole is a lip-shaped sealing ring with a lip-shaped sealing surface (including a lip and a lip edge). achieve sealing. The end sealing rings 10 of the underflow holes, washing holes and blowback holes are the same rubber sealing rings.

The assembly of the filter mechanism: the filter cloth 5 covers the filter plate 2 as a filter medium and seals the filter frame sealing surface 15 of the adjacent filter plate 2, and the four kinds of hole end sealing rings 6 and 10 are installed on the corresponding filter plate 2. In the hole end sealing grooves 12, 18, 21 and 24, the concave parts of a plurality of adjacent parallel feed filter plates 2 form a large group of parallel feed filter chambers 3; a plurality of filter plates 2, thrust plates 1 and compression plates 8. The filter chamber feed channel 11 of the three is connected to form a closed filter chamber feed general channel 7, the back-flushing air channel 19 of the three is connected to form a closed-type back-flushing air general channel, and the washing and drying channels 23 of the three are connected Into a closed washing and drying general channel, and alternately double as a dark effluent auxiliary channel, the three dark effluent channels 22 are connected to form a closed dark effluent general channel 9; The total material channel 7 and the filter chamber 3; the non-porous grouping partition 4 separates 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 compression plate 8 is externally connected by a mobile high-pressure hose, and the feed port of the thrust plate 1 is externally connected by a stainless steel pipe, thereby forming a two-way parallel feeding type dual-purpose filter mechanism.

The two-way parallel feeding type dual-purpose filtering mechanism provided by the invention solves the technical problems of the existing box filter that one machine cannot filter two materials at the same time, and the one-way series feeding is uneven, and has achieved remarkable results. technical effect.

Example 2

A dual-purpose box-type automatic filter press adopts the bidirectional parallel feeding type dual-purpose filter mechanism provided by the present invention. The dual-purpose filter press mainly consists of a frame, a two-way parallel feeding type dual-purpose filter mechanism (including 1, 2, 4, 5, 6, 8, and 10 of the present invention), a pulling plate mechanism 27, and a cloth washing mechanism 28. , The pressing mechanism 29, the hydraulic pump station 30, the PLC program control system 31, the liquid contact flap mechanism 33, the hydraulic drive mechanism and other parts. The dual-purpose filter mechanism is the core mechanism of the filter press. It 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 mobile pressing plate 8, and four kinds of holes. The end sealing ring 6, 10 and other components are composed. The technical part shared by the present invention and the prior art is in accordance with the current standards of my country's machinery industry, "Box Filter Press and Plate and Frame Filter Press Part 1: Type and Basic Parameters", "Part 2: Technical Conditions", "Part 3" : Filter plate" manufactured by JB/T4333.1, 2, 3-2013.

The general assembly of the dual-purpose filter mechanism: the thrust plate 1 is fixedly installed on the two machine legs 32 of the machine head, the pressing plate 8 is movably installed on the rails of the double main beams 26 on both sides of the machine tail, and the filter plates 2 are arranged and installed on the machine. On the track of the double main beams 26 on both sides of the frame, the filter cloth 5 wraps the filter plate 2 as a filter medium and seals the filter frame sealing surface 15 of the adjacent filter plate 2. Four kinds of hole end sealing rings 6, 10, etc. are installed on In the corresponding hole end sealing grooves 12, 18, 21, and 24 of the filter plate 2, the concave parts of a plurality of adjacent parallel feed filter plates 2 form a large group of parallel feed filter chambers 3; The four channels 7, 11, 19, and 23 of the filter chamber feeding, backflushing air, washing and drying, and dark effluent of the plate 1 and the pressing plate 8 are respectively connected into four corresponding closed general channels 7 , 9, etc.; the feed shunt hole 13 of each filter plate 2 is connected to the general feed channel 7 and the filter chamber 3; the non-porous grouping partition 4 separates a large group of parallel feed filter chambers 3 into two small groups of parallel feed filter chambers 3. The separation position of the filter chamber 3 is adapted to the ratio of the two materials; the feed port on the pressing plate 8 is connected with a mobile high-pressure hose (steel mesh lined rubber hose), and the feed on the thrust plate 1 The port is connected with stainless steel pipe; the pressing plate 8 is connected to the piston rod of the double oil cylinder; thus the final assembly of the dual-purpose filter mechanism part of the dual-purpose filter press is completed.

The single complete operation cycle of the dual-purpose filter press is as follows: filter plate pressing, feeding and filtration, flap contacting with liquid, washing and purification, pressing and dehydration + backflushing of materials, drying and purification, pulling plate unloading, cleaning Filter cloth; through the PLC control system, a single operation cycle is automatically completed with one key; intermittent reciprocating cycle work to achieve solid-liquid separation of two batches of materials (suspension). The three working processes of pressing the filter plate, feeding and filtering, and pulling the plate and unloading the cake, which are closely related to the core technology of the present invention, are described in more detail as follows:

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

2. Feeding and filtering: Use the feeding pressure pump to transport the solid-liquid mixture to the two groups at the same time in both directions through the stainless steel pipe from the nose and the mobile high-pressure hose at the tail, and through the main feeding channel 7 of the filter chamber. The filter chamber 3 is connected in parallel to form a pressure difference between the two sides of the filter cloth 5, and the pressure is maintained for low-pressure static filtration. At the same time, the liquid-contacting flap 33 is automatically closed (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 filter chambers 3 of the groups passes through the filter cloth 5 and flows out from the main channel 9 of the dark effluent of each group, and enters the dual-purpose liquid collecting tank.

3. Unloading cake by pulling plate: After washing and purification, pressing and dehydration + back-blowing material, drying and purification are completed, the liquid-contacting flap 33 is automatically opened (opened), and the double hydraulic cylinders are automatically reversed to release the pressing plate 8. The plate trolley 27 pulls open the filter plate 2, and the filter cakes of the two groups of filter chambers 3 fall into the dual-purpose cake bins respectively to realize gravity unloading of the cake; Rapid fall; one machine for two purposes, two groups of filter mechanisms share a set of pressing mechanism 29, hydraulic pump station 30, etc., reducing cost and increasing efficiency.

The dual-purpose box-type automatic filter press of the present invention, after repeated experiments, has the advantages of one machine for dual purposes, space saving, two-way parallel pressure equalization, uniform feeding, consistent dry and wet thickness of the filter cake, and faster liquid discharge; It satisfies the urgent need of one machine for dual purposes 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 benefit of filtering various materials.

Claims (2)

1. A two-way parallel feeding type dual-purpose filter mechanism, including a fixed thrust plate, a parallel feeding filter plate, a filter cloth, a non-porous grouping partition, a mobile pressing plate, a sealing ring at the end of the feeding hole, an undercurrent The hole end sealing ring is characterized in that: the filter plate is a box-type parallel feeding dark effluent filter plate, the non-cavity part of the four corners has holes with different functions, and the upper left corner hole is the filter chamber feed channel and feed shunt hole, right The lower corner hole is the dark effluent channel, the thrust plate and the pressing plate are the anti-corrosion combined single-sided filter plate, the non-cavity parts of the four corners have the same functional holes as the filter plate respectively, and the non-porous grouping partition is the four-corner non-porous blind filter plate. The sealing ring at the end of the feeding hole is a lip-shaped sealing ring; the filter cloth covers the filter plate and is used as the filter medium and the sealing surface of the filter frame to seal the adjacent filter plate. In the hole end sealing groove corresponding to the plate, the concave parts of a plurality of adjacent parallel feed filter plates form a large group of parallel feed filter chambers; the filter chambers of the plurality of filter plates, thrust plates and compression plates The two channels of the dark effluent are respectively connected into two corresponding closed general channels; the non-porous grouping partition divides a large group of parallel feed filter chambers into two small groups of parallel feed filter chambers; the feed of each filter plate The shunt hole is connected to the main feed channel and the filter chamber; it has the performance characteristics of bidirectional parallel feeding. 2. A dual-purpose box-type automatic filter press, comprising a frame, a pressing mechanism, a two-way parallel feeding type dual-purpose filter mechanism, a plate pulling mechanism, a cloth washing mechanism, a liquid-contacting flap mechanism, a hydraulic drive mechanism, and a PLC. A program-controlled system; characterized in that it comprises the bidirectional parallel feeding type dual-purpose filter mechanism of claim 1;

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