Membrane filter plate group convenient to store

Abstract

The utility model discloses a membrane filter plate group convenient to store, which comprises a hollow base plate and filter cloth mounted on the front and rear inner walls of the hollow base plate, a liquid guide area for clear liquid to circulate is arranged between the filter cloth and the outer wall surface of the hollow base plate, and a filter cavity is arranged on one side, far away from the hollow base plate, of the filter cloth. A flow guide hole used for enabling slurry to enter the next hollow base plate is formed in the center of the interior of each hollow base plate, a disc-shaped inflation cavity is formed in each hollow base plate, and a pipe joint communicated with the disc-shaped inflation cavity is installed on the outer wall of one side of each hollow base plate. According to the utility model, the independent operation of the inflation system is maintained, and the pressure and compression characteristics are stable, so that the normal movement and the filter pressing efficiency of the diaphragm plate are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm filter plates, in particular to a diaphragm filter plate group which is easy to store. Background Art

[0002] The diaphragm filter plate of the diaphragm filter press is one of its core components and plays a vital role. The diaphragm filter plate is usually composed of a solid filter plate body, a filter cloth covering its surface, and a diaphragm between the two. The filter plate body has sufficient mechanical strength and pressure resistance to withstand the pressure during the filtration process; the filter cloth is made of chemical fiber or special fiber materials to ensure a good filtration effect; and the diaphragm, as a key component, uses its elasticity and durability to push the solid particles in the slurry to form a filter cake under pressure, and ensure that the filtrate passes through the filter cloth. During its working process, the slurry enters the filter chamber of the diaphragm filter press through the feed pipe; as the machine runs, the diaphragm filter plate divides the filter chamber into two parts, the upper part forms the filter cake, and the lower part collects the filtrate; the diaphragm squeezes the slurry under pressure, pushing the filtrate through the filter cloth, while the solid particles A filter cake is formed; finally, the clean filtrate flows out through the micropores or through-holes of the filter cloth, completing the solid-liquid separation process. However, at the current stage, when the diaphragm filter plate is loaded with slurry, since the filter chamber between the diaphragm filter plates and the inflation cavity inside the diaphragm filter plate itself maintain a certain conductive state, the slurry can easily enter the inflation cavity. Once the slurry enters the inflation cavity, it will change the gas pressure distribution and the compression properties of the gas in the cavity, thereby affecting the normal movement and filtration effect of the diaphragm plate. After the slurry enters the inflation cavity, it will also cause early damage or increased wear of the diaphragm plate components, which will have an adverse effect on the service life of the diaphragm filter plate. Utility Model Content

[0003] The purpose of the utility model is to provide a diaphragm filter plate group that is easy to store. Filter cloths for filtering slurry and forming mud cakes on their own outer wall surfaces are arranged on the front and rear outer walls of the hollow pad, and the filter cavity between the filter cloth and the hollow pad is separated from the disc-shaped inflation cavity in the hollow pad to prevent the filter cavity and the disc-shaped inflation cavity from being connected and causing slurry to enter, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diaphragm filter plate group that is easy to store, comprising a hollow pad and filter cloths installed on the front and rear inner walls of the hollow pad, a liquid guide area for clear liquid circulation is provided between the filter cloth and the outer wall surface of the hollow pad, a filter cavity is provided on the side of the filter cloth away from the hollow pad, a guide hole for allowing the slurry to enter the next hollow pad is provided at the center position of the interior of the hollow pad, a disc-shaped inflation cavity is provided inside the hollow pad, a pipe joint that is interconnected with the disc-shaped inflation cavity is installed on the outer wall of one side of the hollow pad, and a liquid outlet structure that is interconnected with the liquid guide area and for discharge of clear liquid is provided on the bottom edge of the hollow pad.

[0005] Preferably, completely penetrating guide holes are provided at the corners of the surface of the hollow pad.

[0006] Preferably, four circular protrusions are installed on the front and rear outer walls of the hollow pad, and the top ends of the circular protrusions penetrate to the outside of the filter cloth.

[0007] Preferably, the liquid outlet structure is a filtrate drainage hole arranged on the bottom edge of the hollow pad, both ends of the filtrate drainage hole pass through to the outside of the hollow pad, and a Y-shaped guide channel is arranged inside the hollow pad above the filtrate drainage hole.

[0008] Preferably, a double-point docking structure is installed on the left and right outer walls of the hollow pad, and the double-point docking structure allows the hollow pad to be connected to the next hollow pad.

[0009] Preferably, the dual-point docking structure includes a C-mouth frame installed on the left and right outer walls of the hollow pad, a round-shaped boss installed on the outer wall of one side of the C-mouth frame, and two symmetrical docking columns arranged on one side of the surface of the round-shaped boss, and the back of the round-shaped boss is provided with a positioning hole that is concentric with the docking column.

[0010] Preferably, the C-shaped frame and the circular protrusion are made of aluminum alloy.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the diaphragm filter plate group that is easy to store is provided with a hollow pad, a disc-shaped inflation cavity and other structures that cooperate with each other, and a filter cloth is provided on the front and rear outer walls of the hollow pad, and ensures that there is physical isolation between the disc-shaped inflation cavity, effectively preventing the possibility of slurry entering the inflation cavity, and at the same time, the slurry is always located between two adjacent hollow pads. Even if the slurry enters each hollow pad continuously and sequentially, the slurry will not enter the disc-shaped inflation cavity, maintaining the independent operation of the inflation system, and the pressure and compression characteristics are stable, thereby ensuring the normal movement of the diaphragm plate and the filtration efficiency, and helping to further filter and form mud cakes, while blocking solid particles and impurities from entering the inflation cavity, effectively extending the service life of the diaphragm filter plate group. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model Figure 2 ;

[0014] Figure 3 It is a schematic diagram of the three-dimensional cross-sectional structure of the utility model;

[0015] Figure 4For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0016] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model Figure 3 ;

[0017] Figure 6 This is a schematic diagram of the three-dimensional structure of the utility model Figure 4 .

[0018] In the figure: 1. Hollow pad; 101. Guide hole; 102. Circular raised portion; 2. Filter cloth; 3. Diversion hole; 4. Double-point docking structure; 401. C-mouth frame; 402. Round convex column; 403. Docking column; 404. Positioning hole; 5. Pipe joint; 6. Disc-shaped inflation chamber; 7. Filtrate discharge hole; 8. Y-shaped diversion channel. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-6 The utility model provides an embodiment of a diaphragm filter plate group that is easy to store, comprising a hollow pad 1 and filter cloth 2 installed on the front and rear inner walls of the hollow pad 1, a liquid guide area for clear liquid to flow is provided between the filter cloth 2 and the outer wall surface of the hollow pad 1, a filter cavity is provided on the side of the filter cloth 2 away from the hollow pad 1, a guide hole 3 is provided at the center position of the interior of the hollow pad 1 for allowing the slurry to enter the next hollow pad 1, a disc-shaped inflation cavity 6 is provided inside the hollow pad 1, when the disc-shaped inflation cavity 6 is air-intaken, the front and rear outer walls of the hollow pad 1 actively expand to further compress the mud cake, a pipe joint 5 is installed on the outer wall of one side of the hollow pad 1 that is interconnected with the disc-shaped inflation cavity 6, and the bottom edge of the hollow pad 1 is provided with a liquid outlet structure that is mutually conductive with the liquid guide area and for clear liquid to be discharged;

[0021] The corners of the hollow base plate 1 are all provided with completely penetrating guide holes 101. Four circular protrusions 102 are installed on the front and rear outer walls of the hollow base plate 1. The tops of the circular protrusions 102 penetrate the outside of the filter cloth 2.

[0022] The liquid outlet structure is a filtrate drainage hole 7 provided on the bottom edge of the hollow base plate 1. Both ends of the filtrate drainage hole 7 extend to the outside of the hollow base plate 1. A Y-shaped guide channel 8 is provided inside the hollow base plate 1 above the filtrate drainage hole 7. The clear liquid filtered by the filter cloth 2 passes through the filter cloth 2 and the Y-shaped guide channel 8 and flows into the filtrate drainage hole 7. The Y-shaped guide channel 8 allows the clear liquid filtered by the front and rear filter cloths 2 to be collected and ensures that the clear liquid enters the filtrate drainage hole 7.

[0023] The filtrate drainage holes 7 allow the clear liquid filtered by two adjacent hollow pads 1 to be collected uniformly and ensure the clear liquid flow;

[0024] A double-point docking structure 4 is installed on both the left and right outer walls of the hollow pad 1. The double-point docking structure 4 allows the hollow pad 1 to be connected to the next hollow pad 1. The double-point docking structure 4 includes a C-shaped frame 401 installed on the left and right outer walls of the hollow pad 1, a circular protrusion 402 installed on the outer wall of one side of the C-shaped frame 401, and two symmetrical docking posts 403 provided on one side of the surface of the circular protrusion 402. The back of the circular protrusion 402 is provided with a positioning hole 404 that is concentric with the docking post 403.

[0025] The C-mouth frame 401 and the circular protrusion 402 are made of aluminum alloy. When the piston cylinder of the filter press pushes the multiple hollow pads 1 to approach each other, the C-mouth frame 401 slides and cooperates with the guide rail on the filter press. The two adjacent front and rear hollow pads 1 are plugged and connected through the docking column 403 and the positioning hole 404 to ensure the precise positioning and alignment of the diaphragm filter plate during the installation process, thereby ensuring that the position and spacing of each filter plate meet the filtration requirements. At the same time, the double-point docking structure 4 can eliminate the gap and imbalance between the hollow pads 1 to ensure that the filter material is evenly distributed under pressure.

[0026] When the embodiment of the present application is in use, first, several hollow pads 1 are stacked in sequence to form a diaphragm filter plate group, and a filter cavity for storing slurry and forming a mud cake is formed between the outer walls of two adjacent hollow pads 1, that is, the mud cake is located between two adjacent filter cloths 2, and the filtrate filtered by the filter cloth 2 enters the liquid guide area between the hollow pad 1 and the filter cloth 2. The guide hole 3 serves the purpose of connecting several hollow pads 1. With the continuous feeding of the slurry and the pressure of the filter press, the slurry in the filter cavity is divided into two parts, filter cake and filtrate, by the filter cloth 2. That is, when the hollow pad 1 and the filter cloth 2 are subjected to pressure, the slurry between the adjacent filter cloths 2 is filtered through itself, while the solid particles are integrated into the filter cake and passed through the filter cloth. The clean liquid after filtration flows out through the through holes and micropores on the filter cloth 2 and is collected by the Y-shaped flow guide 8 and the filtrate discharge hole 7. After a period of treatment, a filter cake is formed and gradually thickens. With the continued injection of slurry and the increase of filter cake, the diaphragm filter press gradually completes the dehydration and solidification process. When the filter cake needs to be further compressed or discharged after formation, the pipe joint 5 is connected to the external high-pressure air supply end, so that the high-pressure gas enters the disc-shaped inflation cavity 6 of the hollow pad 1. The high-pressure gas is used to continuously fill the disc-shaped inflation cavity 6 and expand the two outer walls of the hollow pad 1 to achieve the purpose of compressing the filter cake or discharging the filter cake. During this process, the filter cavity and the disc-shaped inflation cavity 6 are separated and not connected.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A membrane filter plate assembly that is easy to store, characterized by: The invention comprises a hollow pad (1) and filter cloths (2) mounted on the front and rear inner walls of the hollow pad (1); a liquid guide area for clear liquid to flow is provided between the filter cloth (2) and the outer wall of the hollow pad (1); a filter cavity is provided on the side of the filter cloth (2) away from the hollow pad (1); a guide hole (3) for allowing slurry to enter the next hollow pad (1) is provided at the center position inside the hollow pad (1); a disc-shaped air-filled cavity (6) is provided inside the hollow pad (1); a pipe joint (5) in communication with the disc-shaped air-filled cavity (6) is mounted on the outer wall of one side of the hollow pad (1); and a liquid outlet structure in communication with the liquid guide area and for clear liquid to be discharged is provided on the bottom edge of the hollow pad (1).

2. The membrane filter plate assembly that is easy to store according to claim 1, characterized in that: Completely penetrating guide holes (101) are provided at the corners of the surface of the hollow pad (1).

3. The membrane filter plate assembly that is easy to store according to claim 1, characterized in that: Four circular protrusions (102) are mounted on the front and rear outer walls of the hollow pad (1), and the top ends of the circular protrusions (102) penetrate the outside of the filter cloth (2).

4. The membrane filter plate assembly that is easy to store according to claim 1, characterized in that: The liquid outlet structure is a filtrate discharge hole (7) provided on the bottom edge of the hollow pad (1), both ends of the filtrate discharge hole (7) pass through the outside of the hollow pad (1), and a Y-shaped guide channel (8) is provided inside the hollow pad (1) above the filtrate discharge hole (7).

5. The membrane filter plate assembly that is easy to store according to claim 1, characterized in that: A double-point docking structure (4) is installed on both the left and right outer walls of the hollow pad (1), and the double-point docking structure (4) allows the hollow pad (1) to be connected to the next hollow pad (1).

6. The membrane filter plate assembly that is easy to store according to claim 5, characterized in that: The double-point docking structure (4) comprises a C-shaped frame (401) mounted on the left and right outer walls of the hollow pad (1), a circular convex column (402) mounted on the outer wall of one side of the C-shaped frame (401), and two symmetrical docking columns (403) arranged on one side of the surface of the circular shaped column (402), and a positioning hole (404) concentric with the docking column (403) is provided on the back side of the circular shaped column (402).

7. The membrane filter plate assembly that is easy to store according to claim 6, characterized in that: The C-shaped frame (401) and the circular protrusion (402) are made of aluminum alloy.

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