CN217854745U - Single-plate external feeding filter plate combined unit - Google Patents

Abstract

The utility model discloses a single-plate external feeding filter plate combined unit, belonging to the technical field of filter presses, which comprises a feeding plate and a matching plate, wherein the feeding plate and the matching plate are both composed of square filter plate bodies, the middle part of the surface of each filter plate body is inwards concave to form a filter cavity, and the filter plate bodies around the filter cavity form a filter plate frame; one corner of the upper side of the frame of the filter plate extends outwards to form an outer lug, the outer lug is provided with a main feeding hole, and the feeding plate is provided with a single plate feeding hole at the corner of the filtering chamber close to the outer lug. The single-plate external feeding filter plate combined unit provided by the utility model has the advantages that the loading and unloading of the feeding plate and the matching plate are convenient, the installation space of the filter plate is not required to be reserved, the requirement on the oil cylinder is reduced, and the cost of the filter press is further reduced; the main feeding hole is arranged on the outer hangers on the upper side, so that the feeding speed is high, and the feeding is uniform; the feeding plate and the external lug of the matching plate are in direct extrusion contact to realize the sealing and communication of the main feeding hole, and a sealing ring can be arranged at the hole opening of the main feeding hole to further improve the sealing performance.

Description

Single-plate external feeding filter plate combined unit

Technical Field

The utility model relates to an outer feeding filter plate modular unit of veneer belongs to pressure filter technical field.

Background

The filter press is used for realizing solid-liquid separation, the main filter elements of the filter press are filter plates, a filter chamber wrapped by filter cloth is formed between adjacent filter plates, and the feeding and liquid discharging modes of the filter chamber have great influence on the material filtering effect. Each filter chamber of the single-chamber feeding filter press only feeds materials through the feeding hole on one filter plate, so that the single-chamber feeding filter press has the advantages of high feeding speed, balanced stress on the filter plates, lower water content of filter cakes and the like, and the single-chamber feeding filter press is more and more applied.

The outline structure of a traditional single-chamber feeding filter plate is shown in fig. 12, wherein outer hanging lugs 400 are arranged at four corners of the filter plate, and angle holes for fluid to enter and exit are formed in the outer hanging lugs 400. The distance between the outer edges of the outer hanging lugs 400 at the left side and the right side is larger than the distance between the main beams 1 at the two sides of the filter press, so that the filter plates cannot be smoothly lifted in the vertical direction due to the outer hanging lugs at the left side and the right side of the bottom when the filter plate group is assembled and disassembled. As shown in fig. 13, when installing the filter plate, the filter plate needs to be rotated by a certain angle, then moved down between the main beams 1 on both sides, and then rotated again to be perpendicular to the main beams 1.

The filter plate occupies a large space during the rotary installation, so that an installation space needs to be reserved in the filter press frame, which results in an increase in the working stroke of the pressure plate 2. In order to match the working stroke of the pressing plate, the existing single-chamber feeding filter press adopts the long-stroke oil cylinder 3, so that the cost of the single-chamber feeding filter press is increased. For a large square machine type, a long-stroke oil cylinder filter press is usually designed into a structure of pulling a plurality of blocks at a time to improve the plate pulling efficiency so as to make up for the defect of high cost. This is wasteful for small square filter presses, and results in increased filter press costs. Therefore, the traditional single-chamber feeding filter press has the defects of inconvenient installation, space waste and high cost.

While some filter presses do have the problem of eliminating the outer lugs and moving the corner holes in the lugs to the interior of the filter plate, in this type of filter plate, the corner holes are located entirely within the plate surface and the filter cloth covers all of the corner holes when a draped filter cloth is used. If the sealing ring is added to the corner hole, the sealing ring and the filter cloth cannot be matched to play a sealing role due to the fact that the surface of the filter cloth is rough. Therefore, the existing filter press of the type is not provided with the sealing ring on the corner hole, so that the sealing effect of the material flow channel, particularly the main feeding channel, is poor, and the risk of material leakage exists.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that prior art exists, provide a veneer outer feeding filter plate combination unit, need not reserve the installation space of filter plate, reduced the requirement to the hydro-cylinder, and then reduced the cost of single-chamber feeding pressure filter.

The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:

a single-plate external feeding filter plate combined unit comprises a feeding plate and a distribution plate, wherein the feeding plate and the distribution plate are both formed by square filter plate bodies, the middle parts of the surfaces of two sides of each filter plate body are respectively concave to form a filter chamber, and the filter plate bodies around the filter chamber form a filter plate frame;

an outer hanging lug extends outwards along the plate surface at one corner of the upper side of the filter plate frame, a main feeding hole is formed in the outer hanging lug, and sealing rings are respectively arranged in the openings at two ends of the main feeding hole of the auxiliary plate;

the feeding plate is provided with a single plate feeding hole at the corner of the filtering chamber close to the outer hanging lug, and the single plate feeding hole is communicated with the main feeding hole on the outer hanging lug through a flow dividing channel arranged inside the filtering plate main body;

the multifunctional holes are respectively formed in two corners of the lower side of the filter plate frame, a plurality of water/air inlet and outlet holes are formed in one corner of the lower side of the filter cavity, and the water/air inlet and outlet holes are communicated with the multifunctional holes corresponding to the corners through a confluence channel arranged inside the filter plate main body.

Optionally, the water/air inlet and outlet apertures in the inlet and distribution plates are located at differently oriented corners of the underside of the filter chamber.

Optionally, two sides of the filter plate main body are respectively coated with square filter cloth, and the filter cloth is provided with a first hole corresponding to the single plate feeding hole and a second hole corresponding to the multifunctional hole.

Optionally, an annular groove for embedding the sealing ring is coaxially arranged at the orifice of the main feeding hole, and a T-shaped groove with a T-shaped section is formed at the bottom of the annular groove;

the sealing ring is composed of an annular sealing ring main body, a T-shaped ring with a T-shaped section is arranged on one end face of the sealing ring main body, a sealing lip is arranged on the other end face of the sealing ring main body, the sealing ring main body is embedded into the annular groove, and the T-shaped ring is embedded into the T-shaped groove.

Optionally, a cloth pressing and distributing assembly is arranged in the single plate feeding hole, and the cloth pressing and distributing assembly is composed of an A-type cloth pressing and distributing disc, a B-type cloth pressing and distributing disc and bolts;

the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc are respectively arranged in holes at two ends of the single plate feeding hole, the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc are used for pressing and pasting the filter cloth at the edge of the first hole on the surface of the filtering cavity, and the bolts are used for connecting the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc;

a type compress divides charging tray and B type compress to divide the charging tray to constitute by support ring, fender ring, cylinder and a plurality of connecting plate:

the outer diameter of the support ring is matched with the aperture of the single plate feeding hole, the baffle ring is coaxially arranged on the outer annular surface of the support ring, the cylinder is coaxially arranged on the inner side of the support ring, the connecting plates are connected between the cylinder and the support ring at intervals, the cylinder is coaxially provided with a mounting hole, the bolt penetrates through the mounting holes of the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc, and the mounting hole of one of the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc is set to be a threaded hole.

Optionally, the other corner of the upper side of the filter plate frame is provided with a back-blowing hole.

Optionally, the feeding plate and the distribution plate are respectively a diaphragm filter plate and a chamber filter plate.

Optionally, another corner portion of the upper side of the filter plate frame also extends outwards along the plate surface to form an outer hanging lug, a main feeding hole is formed in the outer hanging lug, a single plate feeding hole is formed in a corner portion of the filter chamber close to the outer hanging lug, and the main feeding hole is communicated with the single plate feeding hole through a flow dividing channel arranged inside the filter plate main body.

Benefits of the present application include, but are not limited to:

the utility model provides a single-plate external feeding filter plate combined unit, the bottom of the feeding plate and the bottom of the matching plate are not provided with external hangers, so that the feeding plate and the matching plate are convenient to assemble and disassemble, the installation space of the filter plate is not required to be reserved, the requirement on an oil cylinder is reduced, and the cost of a single-chamber feeding filter press is further reduced; the main feeding hole with larger size is arranged on the outer hanging lug on the upper side, so that the feeding speed is high and the feeding is uniform; the square filter cloth only covers the filter plate main body, but does not cover the external lugs around the main feeding holes, the feeding plate and the external lugs of the matching plate are in direct extrusion contact to realize the sealing and communication of the main feeding holes, and a sealing ring can be arranged at the hole opening of the main feeding holes to further improve the sealing performance, avoid material leakage, improve the pressure resistance of the filter plate, be more suitable for high-pressure filtration and achieve higher filtration speed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of an angle of a single-plate external feeding filter plate combination unit provided in embodiment 1;

fig. 2 is a perspective view of the filter plate combination unit with single plate external feeding provided in example 1 at another angle;

fig. 3 is a schematic view of a feed plate and filter cloth in the single-plate external-feed filter plate combination unit provided in embodiment 1;

fig. 4 is a schematic view of a distribution plate and a filter cloth in the single-plate external-feeding filter plate combination unit provided in embodiment 1;

FIG. 5 is a schematic view of a filter cloth;

FIG. 6 is a schematic view of a feed plate in the single plate external feed filter plate combination unit provided in example 2;

fig. 7 is a schematic view of a plate arrangement in the single-plate external-feed filter plate combination unit provided in example 2;

FIG. 8 is an enlarged view of the portion (the orifices and the sealing rings at the two ends of the main feed hole) of FIG. 2 taken along line A-A;

FIG. 9 is a schematic view of the installation of the cloth pressing and distributing assembly in the feeding hole of the veneer;

fig. 10 is a schematic view of one of a type a cloth pressing distribution plate and a type B cloth pressing distribution plate;

FIG. 11 is a schematic view of the other of the type A cloth pressing and distributing tray and the type B cloth pressing and distributing tray;

FIG. 12 is a schematic view of a conventional single plate outer feed filter plate and its installation between two side main beams;

FIG. 13 is a schematic view of a conventional single plate outer feed filter plate mounted between two side main beams by rotation;

in the figure, 1, a main beam; 2. a compression plate; 3. a long-stroke oil cylinder; 100. a feeding plate; 200. matching boards; 300. a filter plate body; 310. a filtration chamber; 320. a filter plate frame; 400. an outer suspension loop; 410. a main feed port; 411. an annular groove; 412. a T-shaped slot; 420. a seal ring; 421. a seal ring main body; 422. a T-shaped ring; 423. a sealing lip; 500. a single plate feed hole; 510. a flow distribution channel; 600. a multifunctional hole; 610. water/air inlet and outlet holes; 620. a converging channel; 700. filtering cloth; 710. a first hole; 720. a second hole; 800. a cloth pressing and distributing assembly; 810. an A-type cloth pressing and distributing disc; 820. b type cloth pressing and distributing disc; 830. a bolt; 801. a support ring; 802. a baffle ring; 803. a cylinder; 804. mounting holes; 805. a connecting plate; 900. and (4) blowing back holes.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein. Accordingly, the scope of the present invention is not limited by the specific embodiments disclosed below.

Example 1:

as shown in fig. 1-4, the single-plate external-feeding filter plate combined unit provided in this embodiment is composed of a feeding plate 100 and a distribution plate 200, wherein the feeding plate 100 and the distribution plate 200 are both composed of square filter plate bodies 300, the middle portions of the two side surfaces of the filter plate bodies 300 are respectively recessed to form filter chambers 310, and the filter plate bodies around the filter chambers 310 form filter plate borders 320;

an outer hanging lug 400 is arranged on one corner of the upper side of the filter plate frame 320 in an outward extending mode along the plate surface, a main feeding hole 410 is formed in the outer hanging lug 400, and sealing rings 420 are respectively arranged in openings of two ends of the main feeding hole 410 of the matching plate 200;

the feeding plate 100 is provided with a single plate feeding hole 500 at the corner of the filtering chamber 310 close to the outer hanging lug 400, and the single plate feeding hole 500 is communicated with the main feeding hole 410 on the outer hanging lug 400 through a flow dividing channel 510 arranged inside the main body of the filtering plate;

two corners of the lower side of the filter plate frame 320 are respectively provided with a multifunctional hole 600, one corner of the lower side of the filter chamber 310 is provided with a plurality of water/air inlet and outlet holes 610, and the water/air inlet and outlet holes 610 are communicated with the multifunctional holes 600 of the corresponding corners through a confluence channel 620 arranged in the filter plate body.

The main feeding hole 410 vertically penetrates through the two side plate surfaces of the outer hanging lug 400, the single plate feeding hole 500 vertically penetrates through the surfaces of the filtering chambers 310 on the two sides, the filtering chambers 310 on the two sides are communicated, and the material of the main feeding hole 410 enters the single plate feeding hole 500 through the flow dividing channel 510 and is distributed to the filtering chambers 310 on the two sides from the two orifices of the single plate feeding hole 500. The manifold channels 620 are open to the interior of the filter plate body parallel to the plane of the plate surface, and water/air inlet and outlet holes 610 are open to the interface of the filter chamber 310 with the filter plate border 320 and extend inwardly of the filter plate body to communicate with the manifold channels 620. The multi-function holes 600 vertically penetrate through the two side plate surfaces of the filter plate frame 320 and are communicated with the confluence channel 620.

Further, as shown in fig. 3-5, the single plate external feeding filter plate combination unit provided in this embodiment is covered with square filter cloth 700 on both sides of the filter plate main body 300, and a cloth pressing and distributing assembly 800 is disposed in the single plate feeding hole 500. The filter cloth 700 is provided with a first hole 710 corresponding to the single plate feeding hole 500 and a second hole 720 corresponding to the multifunctional hole 600.

When the filter cloth 700 is assembled, the filter cloth 700 is draped on the feeding plate 100 and the matching plate 200, the filter cloth 700 covers the filter plate main body 300 and extends beyond the edge of the filter plate main body 300 (except the position of the hanging lug 400), so that the first hole 710 and the second hole 720 on the filter cloth 700 are aligned with corresponding holes on the filter plate, and the filter cloth 700 around the single plate feeding hole 500 is fixed with the filter plate through the cloth pressing and distributing assembly. The edges of the filter cloth 700 are provided with small holes, and the edges of the filter cloth 700 at both sides of the same filter plate are connected by binding bands penetrating through the small holes, so that the filter cloth 700 is mounted. Then, a plurality of veneer external feeding filter plate combined units provided by the utility model are repeatedly arranged between the girders at two sides.

After the filter plates are mutually pressed, a filter cavity wrapped by the filter cloth 700 is formed between the adjacent feed plate 100 and the matching plate 200, materials flow into each filter cavity from the main feed hole 410 through the diversion channel 510 and the single plate feed hole 500 of the feed plate 100, solid substances are remained in the filter cavity after being filtered by the filter cloth 700 to form a filter cake, and filtrate seeps out from the filter cloth 700 and is discharged through the water/gas inlet and outlet hole 610, the confluence channel 620 and the multifunctional hole 600, so that solid-liquid separation is realized.

Example 2:

as shown in fig. 6 and 7, in this embodiment, on the basis of embodiment 1, the other corner of the upper side of the filter plate frame 320 is also provided with an outer hanging lug 400 extending outwards along the plate surface, and the main feeding hole 410, the single plate feeding hole 500 and the diversion channel 510 are provided at corresponding positions, so that a double feeding channel is formed on the feeding plate 100, and the feeding efficiency is improved.

It can be seen from embodiment 1 and embodiment 2 that, the utility model provides an outer feeding filter plate combined unit of veneer does not establish the veneer feed port on joining in marriage board 200, makes the main feed port on joining in marriage board 200 not communicate and filters chamber 310, and the material only distributes to the filtration chamber 310 between the filter plate through veneer feed port 500 on the feed plate 100, makes the fluid pressure in the filtration chamber 310 more balanced, and the filter plate atress is more balanced, and not fragile filter plate has improved filter speed and filter pressure.

Compare with traditional veneer outer feeding filter plate, the utility model provides a feed plate in the veneer outer feeding filter plate combined unit does not have outer hangers with the bottom of joining in marriage the board, makes the loading and unloading of feed plate and joining in marriage the board convenient, need not reserve the installation space of filter plate, has reduced the requirement to the hydro-cylinder, and then has reduced the cost of single-chamber feeding pressure filter.

The utility model provides a single-plate external feeding filter plate combined unit, which arranges a main feeding hole with larger size on the upper side outer hanging lug to ensure fast feeding speed and uniform feeding; the square filter cloth only covers the filter plate main body, but does not cover the external lugs around the main feed holes, so that the feed plate is in direct extrusion contact with the external lugs of the auxiliary plate to realize the sealing and communication of the main feed holes, and a seal ring can be arranged at the hole opening of the main feed holes to further improve the sealing performance, avoid material leakage, improve the pressure resistance of the filter plate, be more suitable for high-pressure filtration and achieve higher filtration speed.

The multifunctional hole is relatively small in size, and is arranged at the corner of the lower side of the filter plate main body, so that the influence on the area of the filter chamber is small.

Wherein, the feeding plate 100 preferably adopts a diaphragm type filter plate, the matching plate 200 adopts a box type filter plate, and the filter cake can be further squeezed and squeezed through the diaphragm type filter plate, so that the water content of the filter cake is further reduced. Join in marriage board 200 and feed plate 100 and all pass through the whole machine-shaping of mould, the face wholeness is strong, intensity is high, makes the filter plate combination can bear bigger material pressure, improves the filter effect.

The multifunctional hole 600 has the function of discharging filtrate in the filtering stage, and water or air can be introduced through the multifunctional hole 600 after the filtering is finished, so that the washing or drying of a filter cake is realized.

In a preferred embodiment, the water/air inlet and outlet apertures 610 in the inlet plate 100 and the distribution plate 200 are located at differently oriented corners of the underside of the filter chamber. For example, the water/gas inlet and outlet holes 610 on the feeding plate 100 are arranged at the lower right corner, the water/gas inlet and outlet holes 610 on the matching plate 200 are arranged at the lower left corner, so that the water/gas inlet and outlet holes 610 on the feeding plate 100 and the matching plate 200 are arranged in a staggered manner, water/gas can penetrate through a filter cake without short circuit, solid-liquid separation is purer, and the water content of the filter cake is lower.

For example, during the washing of the filter cake, water enters from the multifunctional hole 600 at the lower right corner, enters the filtering chamber 310 through the converging channel 620 and the water/air inlet/outlet hole 610 at the lower right corner of the feeding plate 100, penetrates through the filter cake for washing, and then is collected to the multifunctional hole 600 at the lower left corner through the water/air inlet/outlet hole 610 and the converging channel 620 at the lower left corner of the distributing plate 200 for discharging, thereby completing the washing process of the filter cake.

When the filter cake is dried, dry compressed gas enters from the multifunctional hole 600 at the lower left corner, enters the chamber through the converging channel 620 and the water/gas inlet/outlet hole 610 of the lower left hole of the matching plate 200, penetrates through the filter cake to dry the filter cake, and is collected to the multifunctional hole 600 at the lower right corner through the water/gas inlet/outlet hole 610 and the converging channel 620 at the lower right corner of the feeding plate 100 and then discharged.

As shown in fig. 8, in a preferred embodiment, an annular groove 411 for inserting the sealing ring 420 is coaxially arranged at the opening of the main feeding hole 410, and a T-shaped groove 412 with a T-shaped cross section is opened at the bottom of the annular groove 411.

The seal ring 420 is formed by an annular seal ring main body 421, a T-shaped ring 422 having a T-shaped section is provided on one end surface of the seal ring main body 421, a seal lip 423 is provided on the other end surface, the seal ring main body 421 is fitted into the annular groove 411, and the T-shaped ring 422 is fitted into the T-shaped groove 412, so that the seal ring 420 is axially fixed and the seal ring 420 is prevented from falling off.

After the sealing rings 420 are installed, the sealing lips 423 protrude out of the plate surface of the outer hanging lugs 400, and after the filter plates are pressed tightly, the sealing rings 420 are pressed, so that the main feed holes 410 of the filter plates are communicated to form a sealing channel.

When the material filters, sealing lip 423 warp under the effect of mobile high-pressure material, hug closely on sealed face, and material pressure is big more, and sealing lip 423 is tight more with the face subsides of closing plate, has guaranteed sealing performance, has improved the filtration pressure that the filter plate can bear.

Further, as shown in fig. 9 to 11, the cloth pressing and distributing assembly 800 is composed of an a-type cloth pressing and distributing tray 810, a B-type cloth pressing and distributing tray 820 and bolts 830, and the a-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820 are respectively arranged in the two end openings of the veneer feeding hole 500.

The bolts 830 are used for connecting the A-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820, and the A-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820 are composed of a support ring, a baffle ring, a cylinder and a plurality of connecting plates.

The outer diameter of the support ring 801 is matched with the aperture of the single plate feeding hole 500, so that the outer surface of the support ring 801 is tightly matched with the hole wall of the single plate feeding hole; the baffle ring 802 is coaxially arranged on the outer annular surface of the support ring 801 and is used for pressing the filter cloth; the cylinder 803 is coaxially arranged at the inner side of the support ring 801; a plurality of connecting plates 805 are connected between the column 803 and the support ring 801 at intervals, the number of the connecting plates 805 is generally set to 2-4, and the connecting plates are arranged at equal intervals along the circumferential direction.

The cylinder 803 is coaxially provided with a mounting hole 804, a bolt 830 passes through the mounting holes 804 of the A-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820, and the mounting hole 804 of one of the A-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820 is provided with a threaded hole.

In specific implementation, the mounting hole 804 of the B-type cloth pressing and distributing tray 820 can be set as a threaded hole.

After the filter cloth 700 covers the surface of the filter plate main body 300, the a-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820 are respectively clamped into the two end openings of the single plate feeding hole 500, then the bolt 830 passes through the mounting holes 804 on the a-type cloth pressing and distributing tray 810 and the B-type cloth pressing and distributing tray 820, the cap of the bolt 830 is clamped on one distributing tray, and the head of the bolt 830 is in threaded connection with the other distributing tray. Thus, the type a cloth pressing and distributing tray 810 and the type B cloth pressing and distributing tray 820 are tightly connected, so that the filter cloth 700 at the edge of the first hole 710 is pressed against the surface of the filtering chamber 310. When material flows from the single plate feed hole 500 into the filter chamber 310, it passes between the connecting plates 805 when flowing through the distribution tray.

Further, as shown in fig. 1 to 4, in a preferred embodiment, a back-blowing hole 900 is formed at another corner of the upper side of the filter plate frame 320, and the back-blowing hole 900 vertically penetrates through two side plate surfaces (a third hole corresponding to the back-blowing hole 900 is formed in the filter cloth 700). In practical application, according to different field material treatment processes, compressed air is introduced into the blowback hole 900 and enters the main feed hole 410 through an external pipeline, so that residual materials in the main feed hole 410 are blown back into the feed tank, and the blowback process is completed.

In order to further improve the filtering effect, the feeding plate 100 and the distribution plate 200 are respectively made of a diaphragm filter plate and a box filter plate, and are made of polypropylene. The diaphragm type filter plate is composed of a core plate and diaphragms arranged on two sides of the core plate, a diaphragm bulging cavity is formed between the core plate and the diaphragms, and squeezing holes are formed in the side face of the feeding plate 100 and communicated with the diaphragm bulging cavity. After the material stops entering, the gas or water with certain pressure is introduced into the film-bulging cavity through the squeezing hole to increase the volume of the film-bulging cavity, so that the filter cake can be further squeezed, and the water content of the filter cake is reduced. Wherein, the core plate, the membrane and the matching plate 200 are integrally processed and formed by a mould, so that the integrity and the strength of the plate surface are improved.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The above-mentioned embodiment can not be regarded as the restriction of the utility model discloses the scope of protection, to technical personnel in this technical field, it is right that any replacement improvement or transform that embodiment of the utility model made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (8)

1. A single-plate external feeding filter plate combined unit is composed of a feeding plate and a matching plate and is characterized in that the feeding plate and the matching plate are both composed of square filter plate bodies, the middle parts of the surfaces of two sides of each filter plate body are respectively concave to form a filter chamber, and the filter plate bodies around the filter chamber form a filter plate frame;

an outer hanging lug extends outwards along the plate surface at one corner of the upper side of the filter plate frame, a main feeding hole is formed in the outer hanging lug, and sealing rings are respectively arranged in the openings at two ends of the main feeding hole of the auxiliary plate;

the feeding plate is provided with a single plate feeding hole at the corner of the filtering chamber close to the outer hanging lug, and the single plate feeding hole is communicated with the main feeding hole on the outer hanging lug through a flow dividing channel arranged inside the filtering plate main body;

the multifunctional holes are respectively formed in two corners of the lower side of the filter plate frame, a plurality of water/air inlet and outlet holes are formed in one corner of the lower side of the filter cavity, and the water/air inlet and outlet holes are communicated with the multifunctional holes corresponding to the corners through a confluence channel arranged inside the filter plate main body.

2. The single plate external feed filter plate assembly unit of claim 1, wherein said water/air inlet and outlet openings in said feed plate and said adapter plate are located at differently oriented corners of the underside of the filter chamber.

3. The single plate external feed filter plate assembly unit of claim 1, wherein both sides of the filter plate body are respectively covered with square filter cloth, and the filter cloth is provided with a first hole corresponding to the single plate feed hole and a second hole corresponding to the multifunctional hole.

4. The single plate external feed filter plate combined unit according to claim 1, wherein an annular groove for embedding a seal ring is coaxially arranged at the orifice of the main feed hole, and a T-shaped groove with a T-shaped section is arranged at the bottom of the annular groove;

the sealing ring is composed of an annular sealing ring main body, a T-shaped ring with a T-shaped section is arranged on one end face of the sealing ring main body, a sealing lip is arranged on the other end face of the sealing ring main body, the sealing ring main body is embedded into the annular groove, and the T-shaped ring is embedded into the T-shaped groove.

5. The single plate external feed filter plate combined unit according to claim 3, wherein a cloth pressing and distributing assembly is arranged in the single plate feed hole, and the cloth pressing and distributing assembly is composed of an A-type cloth pressing and distributing disc, a B-type cloth pressing and distributing disc and bolts;

the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc are respectively arranged in holes at two ends of the single plate feeding hole, the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc are used for pressing and attaching the filter cloth at the edge of the first hole to the surface of the filtering cavity, and the bolts are used for connecting the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc;

the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc are respectively composed of a support ring, a baffle ring, a cylinder and a plurality of connecting plates;

the outer diameter of the support ring is matched with the aperture of the veneer feeding hole, the baffle ring is coaxially arranged on the outer annular surface of the support ring, the cylinder is coaxially arranged on the inner side of the support ring, the connecting plates are connected between the cylinder and the support ring at intervals, the cylinder is coaxially provided with mounting holes, the bolts penetrate through the mounting holes of the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc, and the mounting hole of one of the A-type cloth pressing and distributing disc and the B-type cloth pressing and distributing disc is a threaded hole.

6. The single plate external feed filter plate unit according to claim 1, wherein a back-blowing hole is formed at another corner of the upper side of the filter plate frame.

7. The single plate external feed filter plate assembly unit of claim 1, wherein said feed plate and said mating plate are a diaphragm filter plate and a chamber filter plate, respectively.

8. The single-plate external-feeding filter plate combined unit according to claim 1, wherein another corner of the upper side of the filter plate frame is also provided with an external lug extending outwards along the plate surface, the external lug is provided with a main feeding hole, a single-plate feeding hole is provided at a corner of the filter chamber close to the external lug, and the main feeding hole is communicated with the single-plate feeding hole through a flow dividing channel arranged inside the filter plate body.

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