CN218686656U - Filter plate, filter unit and filter press - Google Patents

Abstract

The utility model discloses a filter plate still discloses the filter unit that has the filter plate and the pressure filter that has the filter plate, and wherein, the filter plate includes: the diaphragm comprises a diaphragm body and a filtering layer which are attached to each other, the diaphragm body is provided with a support, the support is provided with a supporting part abutted against the filtering layer and a pipe part connected with the supporting part, the supporting part is provided with a liquid discharge cavity communicated with the filtering layer and a liquid discharge hole communicated with the liquid discharge cavity, and the inside of the pipe part is communicated with the liquid discharge cavity; the plate body, set up in the membrane body dorsad filter layer one side has the holding gliding hole portion of pipe portion, intercommunication the recoil way of hole portion, the recoil way can communicate the inside of pipe portion. The utility model discloses a jam of filter layer can be delayed to filter plate, filter unit and pressure filter, promotes the work efficiency of pressure filter.

Description

Filter plate, filter unit and filter press

Technical Field

The utility model relates to a structure of pressure filter, in particular to filter plate, filter unit and pressure filter.

Background

In a filter press, there will be several filter units stacked to perform the filter pressing function.

For example, the filter unit includes a first plate member and a second plate member, which are adjacent to each other and stacked in a thickness direction of the plate members, and the first plate member and the second plate member may be referred to as a filter plate.

One of the first plate and the second plate is provided with a pressure filtering cavity, the other one is provided with an extrusion cavity and a diaphragm covering the extrusion cavity, and the plate provided with the extrusion cavity and the diaphragm can be called as a diaphragm filter plate.

When the filter press works, the filter press presses a plurality of filter units together, so that the first plate and the second plate are close to and pressed tightly, then slurry is introduced into the filter pressing cavity, then high-pressure water or compressed air is introduced into the pressing cavity, so that the pressing cavity is expanded, further, the diaphragm is pressed to the filter pressing cavity under stress, so that the filter pressing cavity is reduced, thereby, moisture in the slurry is squeezed out and discharged, the discharged moisture is called filtrate, and the remaining solid is called filter cake.

For the convenience extrudes the moisture in the mud, can set up the filter layer that permeates water on the internal surface of pressure filtration chamber and the diaphragm, the filter layer that permeates water is mostly filter paper, therefore, the moisture in the mud can permeate the filter layer that permeates water and flow to the edge of pressure filtration chamber, finally, discharges via the wash port at the edge of pressure filtration chamber.

However, the permeable filter layer on the diaphragm is easy to block, and the working efficiency is affected.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a filter plate can delay the filter layer and block up, guarantees work efficiency.

The utility model discloses still provide a filter unit who has above-mentioned filter plate.

The utility model also provides a pressure filter of having above-mentioned filter plate.

According to the utility model discloses a filter plate of first aspect embodiment, include: the diaphragm comprises a diaphragm body and a filtering layer which are attached to each other, the diaphragm body is provided with a support, the support is provided with a supporting part abutted against the filtering layer and a pipe part connected with the supporting part, the supporting part is provided with a liquid discharge cavity communicated with the filtering layer and a liquid discharge hole communicated with the liquid discharge cavity, and the inside of the pipe part is communicated with the liquid discharge cavity; the plate body, set up in the membrane body dorsad filter layer one side has the holding gliding hole portion of pipe portion, intercommunication the recoil way of hole portion, the recoil way can communicate the inside of pipe portion.

According to the utility model discloses a filter plate of first aspect embodiment, the support is located the central authorities of the membrane body.

According to the utility model discloses a filter plate of first aspect embodiment, the supporting part is the disc.

According to the utility model discloses a filter plate of first aspect embodiment, the leakage fluid chamber is provided with the butt the support column or the support rib of filter layer.

According to the utility model discloses a filter plate of first aspect embodiment, the diaphragm body with the plate body can laminate sealedly, the diaphragm body with form the extrusion chamber between the plate body.

According to the utility model discloses a filter plate of first aspect embodiment, the hole portion with set up the sealing washer between the pipe portion.

According to the utility model discloses a filter plate of first aspect embodiment, the pipe portion is kept away from the one end of supporting part is opened, the hole portion is provided with the holding the annular of the tip of pipe portion, the recoil way intercommunication the annular.

According to the utility model discloses a filter plate of first aspect embodiment, the footpath of pipe portion is provided with the intercommunicating pore, the intercommunicating pore is used for the intercommunication the recoil way with the inside of pipe portion.

According to the utility model discloses a filter plate of first aspect embodiment, the diaphragm is provided with two, two set up between the diaphragm the plate body.

According to the utility model discloses a filter unit of second aspect embodiment, including the filter plate of any one of the above-mentioned.

According to the third aspect of the invention, the filter press comprises any one of the filter plates or filter units.

According to the utility model discloses filter plate, filter unit and pressure filter have following beneficial effect at least:

1. the utility model discloses a set up the support, make the support have the supporting part, make the supporting part have flowing back chamber and outage, therefore, when the pressure filter extrudes and filters, moisture in the mud can get into the flowing back chamber after seeing through the filter layer to, smoothly and rapid getting rid of has replaced original flowing back mode along the filter layer infiltration, has promoted flowing back efficiency, and then, has promoted the work efficiency of pressure filter.

2. The utility model discloses a make the support be provided with tub portion, make the plate body have the holding the hole portion of tub portion, can communicate the recoil way of the inside of tub portion, therefore, can reverse blow to the filter layer, both convenient with filter cake and filter layer separation, the convenient filter layer of dredging again delays the jam of filter layer, promotes the work efficiency of pressure filter.

3. The utility model discloses a set up unique recoil route, therefore, on the one hand, utilize the cooperation of pipe portion and hole portion, do not hinder the motion of diaphragm, do not influence the filter-pressing work, on the other hand avoids setting up the recoil route on the diaphragmatic corpus membranaceus, avoids the blowback to damage the corpus membranaceus, prolongs the life of diaphragm.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a filter press according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of the filtering unit of the filter press shown in FIG. 1;

fig. 3 is a schematic view of the filter plate of the filter unit shown in fig. 2.

Reference numerals: 100-filtering unit, 110-filtering plate, 120-diaphragm, 130-membrane body, 140-filtering layer, 150-support, 160-supporting part, 170-pipe part, 180-liquid discharge cavity, 190-liquid discharge hole, 200-plate body, 210-hole part, 220-back flushing channel, 230-supporting rib, 240-extrusion cavity, 250-sealing ring and 260-ring groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

A filter plate, a filter unit, and a filter press according to embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to fig. 1, the present invention is directed to an embodiment of a filter press, which may be a vertical filter press or a horizontal filter press.

Structurally, the filter press has a frame provided with a plurality of parallel guide posts, an end seat at one end of the guide posts, a hydraulic part at the other end of the guide posts, and at least one filter unit 100 between the hydraulic part and the end seat.

Referring to FIG. 2, functionally, the filter unit 100 generally has a first plate and a second plate, which may also be referred to as filter plates, stacked one on top of the other.

One of the first plate and the second plate is provided with a pressure filtering chamber, the other is provided with a squeezing chamber 240 and a diaphragm 120 covering the squeezing chamber 240, and the plate provided with the squeezing chamber 240 and the diaphragm 120 can be also called as a diaphragm 120 filter plate 110.

Structurally, the first and second plates may be identical, i.e., one side of the plates is provided with the compression chamber and the other side of the plates is provided with the diaphragm 120 and the compression chamber 240, such that adjacent plates cooperate to form one filter unit 100.

Structurally, the first plate can be symmetrically arranged in the thickness direction of the plate, and the second plate is also symmetrically arranged in the thickness direction of the plate, for example, the two sides of the first plate are both provided with the filter pressing cavity, and the two sides of the second plate are both provided with the extrusion cavity 240 and the diaphragm 120, so that the adjacent plates are matched into one filter unit 100.

In particular, the plate adjacent to the hydraulic member or end seat is provided with a filtering or pressing chamber 240 and a membrane 120 on only one side thereof to ensure proper functioning of the filter press.

When the filter press is in operation, the filter press presses the plurality of filter units 100 together, such that the first and second plates are brought together and compressed, and then the filter chamber is filled with slurry.

Subsequently, high pressure water or compressed air is introduced into the pressing chamber 240 to expand the pressing chamber 240, and the diaphragm 120 is pressed against the filter pressing chamber to contract the filter pressing chamber, so that the water in the slurry is squeezed out and discharged, the discharged water is called filtrate, and the remaining solid is called filter cake.

Referring to fig. 3, the present invention is also directed to a filter plate structure that can be applied to a membrane 120 filter plate 110, and further, to a filter unit 100, and correspondingly, to a filter press.

Of course, the filter plate 110 of the present invention may be applied to a filter, a thickener, etc., to alleviate clogging of filter materials such as the filter layer 140 and the permeable layer.

Specifically, the filter plate 110 of the present invention includes a membrane 120 and a plate body 200, wherein the number of the membranes 120 may be one or two, depending on the arrangement of the filter unit 100.

In detail, the diaphragm 120 includes a membrane body 130 and a filter layer 140, which are attached to each other, and the plate body 200 is disposed on a side of the membrane body 130 opposite to the filter layer 140.

Corresponding to the membrane body 130, the material of the membrane body 130 can refer to the material of the membrane in the conventional membrane filter plate, and is mostly rubber or polypropylene; the filter layer 140 is usually filter paper or may be a multi-layer metal net, referring to the arrangement of the permeable layer in the filter press.

Specifically, the present embodiment further provides the holder 150, and the holder 150 is disposed on the membrane body 130, preferably, in number, so as to reduce the manufacturing difficulty and the manufacturing cost, and is located at the center of the filter plate 110, and when the area of the filter plate 110 is large, a plurality of holders 150 may be disposed.

For the supporter 150, a hard plastic may be used for the supporter 150, but it is preferable to use a metal such as aluminum, titanium, iron, etc., so that it has a stable structure and is not easily deformed, thereby completely performing a corresponding function.

Specifically, the bracket 150 is provided with a support portion 160 abutting the filter layer 140, and a tube portion 170 connecting the support portion 160.

The supporting portion 160 is provided with a drainage chamber 180 communicated with the filter layer 140 and a drainage hole 190 communicated with the drainage chamber 180, so that when the filter press works, moisture in slurry enters the drainage chamber 180 after penetrating through the filter layer 140, filtrate is formed, and then, under the action of gravity, the filtrate flows to the drainage hole 190 and is discharged through the drainage hole 190.

Structurally, the support part 160 may be provided with a drainage pipe, or the membrane body 130 may be provided with a drainage channel, and correspondingly, the plate body 200 may be provided with a drainage passage, so that the filtrate may be smoothly discharged.

When the filtrate is discharged cleanly or the filter cake reaches a certain degree of dryness, the first plate and the second plate of the filtering unit 100 of the filter press are far away from each other, and the filter cake generated between the first plate and the second plate is taken out, so that the next filter press work is conveniently carried out.

In order to delay the clogging of the filter layer 140 and prevent the filter cake from adhering to the filter layer 140 and being difficult to take out, in this embodiment, the bracket 150 further has a pipe portion 170 connected to the support portion 160, the inside of the pipe portion 170 communicates with the drain chamber 180, and the plate body 200 has a hole portion 210 for receiving the pipe portion 170 to slide and a back flushing passage 220 communicating with the hole portion 210, and the back flushing passage 220 can communicate with the inside of the pipe portion 170.

In summary, in the embodiment, the support 150 is provided with the support portion 160, and the support portion 160 is provided with the liquid discharge chamber 180 and the liquid discharge hole 190, so that when the filter press performs squeezing filtration, moisture in slurry can enter the liquid discharge chamber 180 after passing through the filter layer 140, and thus can be discharged smoothly and rapidly, the original liquid discharge manner penetrating along the filter layer 140 is replaced, the liquid discharge efficiency is improved, and further, the working efficiency of the filter press is improved.

Meanwhile, in the present embodiment, the bracket 150 is provided with the pipe portion 170, so that the plate body 200 has the hole portion 210 for accommodating the pipe portion 170 and the back flushing passage 220 capable of communicating with the inside of the pipe portion 170, and thus, the filter layer 140 can be reversely blown, which not only facilitates separation of the filter cake from the filter layer 140, but also facilitates dredging of the filter layer 140, delays blockage of the filter layer 140, and improves the working efficiency of the filter press.

In addition, the present embodiment sets a unique back flushing path, so that, on one hand, the cooperation between the pipe part 170 and the hole part 210 does not hinder the movement of the diaphragm 120 and does not affect the filter pressing operation, and on the other hand, the back flushing path is not set on the diaphragm body 130 of the diaphragm 120, thereby avoiding the damage of the diaphragm body 130 due to back flushing and prolonging the service life of the diaphragm 120.

In some embodiments of the present invention, only one tube 170 may be disposed on the supporting portion 160 to reduce the manufacturing difficulty and cost.

Pipe portion 170 is preferably a circular pipe, which facilitates manufacturing and reduces the difficulty of fitting pipe portion 170 to hole portion 210, but pipe portion 170 may still be manufactured using a pipe such as a square pipe.

In some embodiments of the present invention, the axes of the hole 210 and the tube 170 are arranged along the thickness direction of the filter plate 110, so that the tube 170 can smoothly slide along the hole 210, thereby not affecting the movement of the diaphragm 120 relative to the plate 200 and not interfering with the operation of the filter press.

In some specific embodiments of the present invention, the support 150 can be located in the center of the membrane 130, and thus the drainage in the center of the filter chamber can be accelerated, and the critical drainage efficiency is improved, thereby greatly improving the efficiency of the filter press.

Meanwhile, during backflushing, the position where the filter cake is most adhered to the filtering layer 140 can be blown away with the maximum effect, so that the filter cake and the filtering layer 140 are very easy to separate.

In some embodiments of the present invention, the supporting portion 160 is a plate, thereby enlarging the open area of the drainage cavity 180 on the supporting portion 160 to facilitate drainage.

In some embodiments of the present invention, the supporting portion 160 is in the shape of a cover, and the shape of the supporting portion may be circular or square, so as to meet the arrangement requirement of the filter plate 110.

In some specific embodiments of the present invention, drainage chamber 180 is provided with support columns or support ribs 230 abutting against filter layer 140, thereby improving the strength of support portion 160, avoiding support portion 160 from being crushed, also avoiding filter layer 140 from being squeezed into drainage chamber 180, and avoiding affecting the function of drainage chamber 180.

In some specific embodiments of the present invention, the ends of the support posts can be connected together, thereby reducing the risk of puncturing the filter layer 140 and also preventing the support posts from tilting.

In some embodiments of the present invention, the support ribs 230 extend into a long strip shape, which improves the support strength and prevents the support rib from overturning.

In some specific embodiments of the present invention, the support columns and the support ribs 230 can be arranged in a radial manner, so that the liquid can be conveniently discharged in all directions, thereby reducing the installation difficulty.

In some specific embodiments of the present invention, the sealing ring 250 is disposed between the hole portion 210 and the pipe portion 170, so that gas leakage during backflushing can be avoided, and high pressure water or compressed air injected into the pressing chamber 240 during operation of the filter press can be prevented from permeating, thereby preventing the pressing of the filter press from being affected.

In some embodiments of the present invention, the end of the pipe portion 170 away from the supporting portion 160 is open, the hole portion 210 is provided with a ring groove 260 for accommodating the end of the pipe portion 170, and the reverse flushing channel 220 communicates with the ring groove 260.

Therefore, the gas of the backflushing channel 220 enters the ring groove 260, then enters the liquid discharge cavity 180 through the end part of the pipe part 170, and finally is blown to the filter layer 140, so that the condition that whether the backflushing path is cut off or not needs to be calculated in detail, and the design difficulty is reduced.

In some specific embodiments of the present invention, the pipe 170 is provided with a communication hole in the radial direction, and the communication hole is used to communicate the back flush channel 220 with the inside of the pipe 170, thereby providing an alternative to the back flush path, and further, reducing the thickness of the plate 200, which is beneficial to reducing the occupied space, and making the filter press more compact.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. A filter plate, comprising:

the diaphragm (120) comprises a diaphragm body (130) and a filtering layer (140) which are attached to each other, the diaphragm body (130) is provided with a support (150), the support (150) is provided with a supporting part (160) which is abutted against the filtering layer (140) and a pipe part (170) which is connected with the supporting part (160), the supporting part (160) is provided with a liquid discharge cavity (180) which is communicated with the filtering layer (140) and a liquid discharge hole (190) which is communicated with the liquid discharge cavity (180), and the inside of the pipe part (170) is communicated with the liquid discharge cavity (180);

the plate body (200) is arranged on one side, back to the filter layer (140), of the membrane body (130), and is provided with a hole portion (210) for accommodating the tube portion (170) to slide and a back flushing channel (220) communicated with the hole portion (210), and the back flushing channel (220) can be communicated with the inside of the tube portion (170).

2. The filter plate of claim 1, wherein the support portion (160) is disc-shaped.

3. A filter plate according to claim 1 or 2, characterized in that the drainage chamber (180) is provided with support posts or ribs (230) abutting the filter layer (140).

4. The filter plate according to claim 1, characterized in that the membrane (130) and the plate body (200) are able to be sealed snugly, a squeezing cavity (240) being formed between the membrane (130) and the plate body (200).

5. A filter plate according to claim 1 or 4, characterized in that a seal ring (250) is provided between the bore portion (210) and the tube portion (170).

6. A filter plate according to claim 1, wherein the pipe portion (170) is open at an end thereof remote from the support portion (160), and the hole portion (210) is provided with an annular groove (260) receiving an end portion of the pipe portion (170), and the back flushing passage (220) communicates with the annular groove (260).

7. The filter plate according to claim 1, wherein the tube portion (170) is provided with a communication hole in a radial direction for communicating the back flush passage (220) and the inside of the tube portion (170).

8. A filter plate according to claim 1, characterized in that said membranes (120) are provided in two, said plate body (200) being provided between two of said membranes (120).

9. A filter unit comprising a filter plate according to any one of claims 1 to 8.

10. A filter press, characterized by comprising a filter plate according to any one of claims 1 to 8, or a filter unit according to claim 9.

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