Filter press plate with sandwich frame

Abstract

The present invention provides a filter plate with a clamped frame, which divides the filter plate frame with a complex cross-sectional structure into three simple components, namely, the filter plate clamped frame, a small pressure strip, and a large pressure strip, thereby simplifying processing, reducing manufacturing costs, and improving quality assurance; the filter plate frame connecting bolts are all exposed to the outside of all parts, which is convenient for installation and disassembly, reduces the time and labor cost of replacing and / or repairing the filter plate liner, the pressing diaphragm and / or its other components, and improves equipment utilization.

Description

Technical Field

[0001] The invention relates to a filter plate of a filter press adopting a clamping type frame. Background Art

[0002] Filter press separation is a commonly used solid-liquid separation technology. The filter press forms a closed filter chamber by pressing adjacent filter plates to dehydrate the material. The filter plates forming the filter chamber generally include liner filter plates and diaphragm filter plates arranged alternately.

[0003] The traditional liner filter plate structure is shown in Figure 1A , 1B , the membrane filter plate structure is shown in Figure 2A , 2B .exist Figure 1A , 1B Among them, number 101 is the main steel plate of the filter plate, which is the main frame of the filter plate and is used for welding and fixing all accessories; number 102 is the filter plate frame, which is used to install the rubber sealing strip 104 and form a partial filter chamber for easy removal of the filter cake; number 103 is the countersunk bolt for fixing the filter plate frame 102; number 104 is the rubber sealing strip, which is used to seal the gap between adjacent filter plates to form a closed filter chamber; number 105 is a modified polyethylene plastic liner with vertical grooves, which is used to smoothly guide the filtrate water into the drainage pipe for centralized discharge. Figure 2A , 2B Among them, number 201 is the main steel plate of the filter plate, which is the main frame of the filter plate and is used for welding and fixing all accessories; number 202 is the filter plate frame, which is used to install the rubber sealing strip 204 and constitute a partial filter chamber for convenient filter cake shedding; number 203 is the countersunk bolt for fixing the filter plate frame 202; number 204 is the rubber sealing strip, which is used to seal the gap between adjacent filter plates to form a closed filter chamber; number 205 is the rubber squeezing diaphragm, which is used to squeeze the filter cake to reduce the moisture content of the material; number 206 is the diaphragm pressing plate for fixing the diaphragm. Summary of the invention

[0004] According to one aspect of the present invention, there is provided a filter plate of a filter press with a sandwich-type frame, characterized in that it comprises:

[0005] The main steel plate assembly includes a filter plate main steel plate,

[0006] The sealing strip is used to seal the gap between adjacent filter plates to form a closed filter chamber. The sealing strip is made of elastic material.

[0007] The clamping frame is used to clamp on the main steel plate assembly.

[0008] The pressure strip is used to fix the sealing strip on the clamping frame.

[0009] Clamp the clamp frame connecting bolts of the clamp frame.

[0010] According to another aspect of the present invention, there is provided a method for assembling the filter plate of the filter press, which is characterized by comprising:

[0011] A) Assemble the clamping frame, sealing strip and pressure strip into the left filter plate frame assembly.

[0012] B) Assemble the clamping frame, sealing strip and pressure strip into the right filter plate frame assembly.

[0013] C) Assemble the main steel plate assembly,

[0014] D) Use the clamp frame connecting bolts to clamp the left filter plate frame assembly and the right filter plate frame assembly on both sides of the liner plate filter plate main steel plate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1A , 1B It is a schematic structural diagram of a traditional liner filter plate.

[0016] Figure 2A , 2B It is a schematic structural diagram of a traditional membrane filter plate.

[0017] Figure 3A , 3B It is a schematic structural diagram of a clamp frame liner filter plate according to an embodiment of the present invention.

[0018] Figure 4A , 4B The figure is a schematic structural diagram of a sandwich frame diaphragm filter plate according to an embodiment of the present invention.

[0019] Figure 5 It is a schematic diagram of the assembly process of a clamp frame liner filter plate according to an embodiment of the present invention.

[0020] Figure 6 The figure is a schematic diagram of the assembly process of a sandwich frame diaphragm filter plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] exist Figure 1A , 1B and Figure 2A , 2B The conventional filter plates shown in the figure all have a filter plate frame 102 and 202 with a relatively complex cross-sectional structure, which is fixed to the filter plate main steel plates 101 and 201 by a plurality of countersunk bolts 103 and 203. The inventors have found in practice that such conventional filter plate frames have at least the following two deficiencies:

[0022] First, due to the complex cross-sectional shape of the filter plate frame, the filter plate frame processing technology is complicated, the manufacturing cost is high, and quality defects are prone to occur;

[0023] Secondly, the countersunk bolts fixing the filter plate frame are hidden inside the sealing strip. When the plastic liner or the pressing diaphragm needs to be replaced (especially the pressing diaphragm is a wearing part and needs to be replaced frequently), the sealing strip and the filter plate frame must be removed. The disassembly workload is large and the downtime is long. The sealing strip is also easily damaged during disassembly.

[0024] In view of the above problems in the prior art, the inventors have conducted in-depth research and proposed a novel filter plate with a sandwich filter plate frame.

[0025] Figure 3A , 3B The structure of a liner filter plate according to one embodiment of the present invention is shown, wherein:

[0026] Reference numeral 301 is a filter plate clamp frame, which is used to install the sealing strip 305 and clamp the filter plate main steel plate assembly 503 (see FIG. Figure 5 )superior;

[0027] Reference numeral 302 is a connecting bolt for clamping the filter plate to the clamp frame 301;

[0028] Reference numeral 303 is a small pressure strip for fixing the rubber sealing strip 305;

[0029] Reference numeral 304 is a connecting bolt for fixing the small pressure strip 303 and the large pressure strip 306;

[0030] Reference numeral 305 is a rubber sealing strip, which is used to seal the gap between adjacent filter plates to form a closed filter chamber;

[0031] Reference numeral 306 is a large pressure strip for fixing the rubber sealing strip 305 and forming a part of the filter chamber for facilitating the shedding of the filter cake;

[0032] The number 307 is the main steel plate of the liner filter plate, which is the main frame of the liner filter plate and is used for welding and fixing various accessories;

[0033] Reference numeral 308 is a modified polyethylene plastic liner with vertical grooves, which is used to guide the filtrate water into the filter plate drain pipe 309 for centralized discharge.

[0034] Figure 4A , 4B The structure of a membrane filter plate according to an embodiment of the present invention is shown, wherein:

[0035] Reference numeral 401 is a filter plate clamp frame, which is used to install the sealing strip 405 and clamp the filter plate main steel plate assembly 603 (see FIG. Figure 6 )superior;

[0036] Reference numeral 402 is a connecting bolt for clamping the filter plate to the clamp frame 401;

[0037] Reference numeral 403 is a small pressure strip for fixing the rubber sealing strip 405;

[0038] Reference numeral 404 is a connecting bolt for fixing the small pressure strip 403 and the large pressure strip 406;

[0039] Reference numeral 405 is a rubber sealing strip, which is used to seal the gap between adjacent filter plates to form a closed filter chamber;

[0040] Reference numeral 406 is a large pressure strip for fixing the rubber sealing strip 405 and forming a part of the filter chamber for facilitating the shedding of the filter cake;

[0041] Reference numeral 407 is a rubber diaphragm, which is used to squeeze the filter cake to reduce the moisture content of the material;

[0042] Reference numeral 408 is a diaphragm pressing plate for fixing the diaphragm 407;

[0043] The number 409 is the main steel plate of the diaphragm filter plate, which is the main frame of the filter plate and is used for welding and fixing all accessories.

[0044] The assembly process of the sandwich frame liner filter plate according to the present invention is shown in FIG. Figure 5 Assemble the two filter plate clamping frames 301 with the rubber sealing strips 305, small pressure strips 303 and large pressure strips 306 respectively to form a left filter plate frame assembly 501 and a right filter plate frame assembly 502; assemble the filter plate main steel plate 307 and the plastic lining plate 308 to form a lining plate filter plate main steel plate assembly 503; and then use the connecting bolts 302 to clamp the left filter plate frame assembly 501 and the right filter plate frame assembly 502 on both sides of the lining plate filter plate main steel plate assembly 503, thus completing the assembly of an integral lining plate filter plate. Figure 3A , 3B On the contrary, by simply loosening the connecting bolts 302 exposed to the outside, the left and right filter plate frame assemblies can be conveniently removed, and the filter plate liner and / or its parts can be repaired and / or replaced.

[0045] The assembly process of the sandwich-type frame membrane filter plate according to one embodiment of the present invention is shown in FIG. Figure 6 Assemble the two filter plate clamping frames 401 with the rubber sealing strips 405, small pressure strips 403 and large pressure strips 406 respectively to form a left frame assembly 601 and a right frame assembly 602; assemble the filter plate main steel plate 409, the pressing membrane 407 and the membrane pressing plate 408 to form a membrane filter plate main steel plate assembly 603; and then use the connecting bolts 402 to clamp the left filter plate frame assembly 601 and the right filter plate frame assembly 602 on both sides of the membrane filter plate main steel plate assembly 603, thus completing the assembly of an integral membrane filter plate. Figure 4A , 4BOn the contrary, by simply loosening the exposed connecting bolts 402, the left and right filter plate frame assemblies can be conveniently removed to repair and / or replace the diaphragms and / or other parts of the filter plates.

[0046] Advantages and / or beneficial effects of the filter plate with a sandwich frame according to the invention include:

[0047] 1) Divide the filter plate frame with complex cross-sectional shape into three simple-shaped components, namely, the filter plate clamping frame, the small layering strip, and the large layering strip, so that it is easy to process, reduce the manufacturing cost, and ensure the quality, which can improve the market competitiveness of the filter press products;

[0048] 2) The filter plate frame connection bolts are exposed on the outside of all parts, which is convenient for installation and disassembly, reducing the time and labor cost of replacing and / or repairing the filter plate liner, squeeze diaphragm and / or other components, and improving equipment utilization.

Claims

1. A filter plate for a filter press with a sandwich frame, characterized in that include: A main steel plate assembly (503, 603), comprising a filter plate main steel plate (307, 409), The sealing strip (305, 405) is used to seal the gap between adjacent filter plates to form a closed filter chamber. The sealing strip is made of elastic material. The clamping frame (301, 401) is used to clamp on the main steel plate assembly (503, 603). The pressure strip is used to fix the sealing strip on the clamping frame. Clamping the clamping frame connecting bolts (302, 402) of the clamping frame (301, 401), in: Layering includes small layering and large layering. The small bead is pressed on one side of the sealing strip, and the large bead is pressed on the other side of the sealing strip. Both the small pressure strip and the large pressure strip are fixed to the clamping frame with pressure strip connecting bolts.

2. The filter plate of the filter press according to claim 1, characterized in that: The main steel plate assembly also includes a lining plate (308).

3. The filter plate of the filter press according to claim 2, characterized in that: The liner (308) is a plastic liner with vertical grooves for directing filtrate water into the filter plate drain pipe (309).

4. The filter plate of the filter press according to claim 1, characterized in that The main steel plate assembly also includes: The rubber diaphragm (407) is used to squeeze the filter cake to reduce the moisture content of the material. A diaphragm pressing plate (408) is used to fix the rubber diaphragm (407).

5. The filter plate of the filter press according to claim 1, characterized in that: The large layering strips form part of the filter chamber which facilitates the removal of the filter cake.

6. A method for assembling a filter plate of a filter press, wherein the filter plate of the filter press is the filter plate of the filter press according to claim 1, characterized in that include: A) assembling the clamping frame (301, 401) with the sealing strip (305, 405) and the pressure strip into a left filter plate frame assembly (501, 601); B) assembling the clamping frame (301, 401) with the sealing strip (305, 405) and the pressure strip into a right filter plate frame assembly (502, 602), C) Assembling the main steel plate assembly (503, 603), D) Using clamp frame connection bolts, the left filter plate frame assembly (501) and the right filter plate frame assembly (502) are clamped on both sides of the liner plate filter plate main steel plate assembly (503). in: The step A) comprises: Use a small pressure strip to press one side of the sealing strip. Use a large pressure strip to press on the other side of the sealing strip. Use the strip connection bolts to fix the small strip on the clamp frame. Use the pressure strip connecting bolts to fix the large pressure strip to the clamp frame.

7. The assembly method according to claim 6, characterized in that The step C) comprises: The filter plate main steel plate and the lining plate (308) are assembled into a filter plate main steel plate assembly.

8. The assembly method according to claim 6, characterized in that The step C) comprises: The filter plate main steel plate (409), the rubber diaphragm (407) and the diaphragm pressing plate (408) are assembled into a main steel plate assembly. The rubber diaphragm (407) is used to squeeze the material in the closed filter chamber to reduce the moisture content of the material. The diaphragm pressing plate (408) is used to fix the rubber diaphragm (407).

9. The assembly method according to claim 6, characterized in that: The large layering strips form part of the filter chamber which facilitates the removal of the filter cake.

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