High-strength corrosion-resistant filter plate

Abstract

The utility model discloses a kind of high-strength corrosion-resistant filter plates, including outer frame and filter plate;Filter cloth is equipped on the back of filter plate;Outer frame is annular, and filter plate is located in the inside of outer frame;The middle end of filter plate is equipped with liquid inlet hole, and the front of filter plate and around liquid inlet hole are equipped with several limit lugs;Outer frame includes frame body one, frame body two, frame body three in sequence;Frame body two, frame body three are equipped with reinforcing layer between, and reinforcing layer is annular metal frame;Reinforcing layer is welded with metal corner in four corners.This utility model is set as multilayer in outer frame, and reinforcing layer of metal material is coated in outer frame, and is treated with tinning, and reinforcing layer can improve the structural strength of the whole of outer frame, reduce the influence under long time pressure.

Description

Technical Field

[0001] This utility model relates to the field of filter press technology, specifically to a high-strength corrosion-resistant filter plate. Background Technology

[0002] The filtration section of a filter press is its core component, with the filter plates being a crucial part of the filtration structure. The smooth operation of a filter press depends on the proper functioning of the filter plates. Filter plates increase the surface area of ​​the filter chamber walls, thereby increasing the contact area between the filter cloth and the mixed liquor. The filter plates divide the filter chambers into individual filter cavities, upon which the filter cloth adheres, increasing its effective surface area and thus improving filtration efficiency. The filter plates also create effective space for storing the filter cake. The filter plates of a filter press are concave on both sides; when two filter plates are closed, the space between them can be used to store the filter cake trapped by the filter cloth.

[0003] In practical applications, filter presses require high pressure to achieve solid-liquid separation. The filter plates must withstand high pressure and are subject to impact, wear, and chemical corrosion from materials. Over time, the filter plates are prone to cracks and damage, affecting filtration efficiency. In existing technologies, the filter plates are integrally injection molded. Under prolonged high pressure, the frame is compressed, which can lead to a decrease in structural strength, indicating room for technological improvement. Utility Model Content

[0004] This invention aims to solve the aforementioned technical problem that, when the filter plate is integrally injection molded, the frame is squeezed under prolonged high pressure, which can easily lead to a decrease in structural strength. The invention provides a high-strength, corrosion-resistant filter plate.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a high-strength corrosion-resistant filter plate, including an outer frame and a filter plate; a filter cloth is provided on the back of the filter plate; the outer frame is annular, and the filter plate is located inside the outer frame; a liquid inlet hole is provided in the middle of the filter plate, and a plurality of limiting protrusions are provided on the front of the filter plate and around the liquid inlet hole;

[0006] The outer frame comprises frame one, frame two, and frame three in sequence; a reinforcing layer is provided between frame two and frame three, and the reinforcing layer is a ring-shaped metal frame; metal corner pieces are welded to the four corners of the reinforcing layer.

[0007] Furthermore, the outer side of the outer frame is rectangular, with rounded corners.

[0008] Furthermore, all the limiting protrusions are frustum-shaped, with their end faces flush with the outer frame.

[0009] Furthermore, the outer side of the filter plate is provided with an extension side that matches the shape of the outer frame, and the extension side is fixed between frame one and frame two.

[0010] Furthermore, the surface of the reinforcing layer is tin-plated and coated with a protective film.

[0011] Furthermore, the front of the frame three is provided with an annular groove that can accommodate the reinforcing layer, and the cross-sectional area of ​​the reinforcing layer is smaller than that of the frame three.

[0012] Furthermore, the frame one, frame two, and frame three are made of polyvinylidene chloride, and the outer sides of frame one and frame three are covered with a nitrile rubber layer.

[0013] The advantages of this utility model compared with the prior art are as follows:

[0014] The filter frame used to fix the filter plate is multi-layered, and the base material is made of polyvinylidene fluoride and coated with nitrile rubber. This improves the sealing between adjacent frames while ensuring corrosion resistance and preventing leakage.

[0015] A metal reinforcing layer is wrapped around the outer frame and tin-plated. This reinforcing layer improves the overall structural strength of the outer frame and reduces the impact under prolonged pressure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the outer frame and filter plate structure of this utility model.

[0018] Figure 3 This is a schematic diagram of the disassembled outer frame structure of this utility model.

[0019] As shown in the figure: 1. Outer frame, 2. Filter plate, 3. Liquid inlet hole, 4. Limiting protrusion, 5. Frame body one, 6. Frame body two, 7. Frame body three, 8. Extension side, 9. Reinforcing layer, 10. Metal corner, 11. Annular groove. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings.

[0021] Example 1, in conjunction with Appendix Figure 1 , 2 A high-strength corrosion-resistant filter plate includes an outer frame 1 and a filter plate 2. The outer side of the outer frame 1 is rectangular with rounded corners to reduce sharp right angles and improve safety during production and use. The back of the filter plate 2 is provided with filter cloth. In actual use, the mixture is filtered through the liquid inlet 3 mentioned below and the filter cloth. The liquid flows out, and the solid forms a slag cake between adjacent filter plates 2. Subsequently, the adjacent outer frames 1 are pushed apart to collect the slag cake. The outer frame 1 is annular, and the filter plate 2 is located inside the outer frame 1. The outer frame 1 serves to support and protect the filter plate 2, and at the same time, it cooperates with the filter plate 2 to form a filter chamber.

[0022] In addition, the filter plate 2 is provided with a liquid inlet hole 3 in the middle, and a number of limiting protrusions 4 are provided on the front of the filter plate 2 and around the liquid inlet hole 3. The limiting protrusions 4 are all frustum-shaped, and the end face is flush with the outer frame 1. The limiting protrusions 4 play an auxiliary support role to avoid the phenomenon of deformation in the filter chamber formed between adjacent filter plates 2 due to lack of support under subsequent impact.

[0023] Combined with appendix Figure 1 , 2 3. The outer frame 1 includes frame 5, frame 6, and frame 7 in sequence; frame 5, frame 6, and frame 7 are made of polyvinylidene fluoride, and frame 5 and frame 7 are covered with a layer of nitrile rubber on the outside; polyvinylidene fluoride is resistant to strong acids and organic solvents and is a commonly used corrosion-resistant material in the chemical, electroplating and other industries. The nitrile rubber layer on the outside of frame 5 and frame 7 can further improve the corrosion resistance of the outer frame 1 and increase the sealing between adjacent outer frames 1;

[0024] A reinforcing layer 9 is provided between frame 2 6 and frame 3 7. The reinforcing layer 9 is a ring-shaped metal frame, which can be made of low carbon steel. The surface of the reinforcing layer 9 is tin-plated and coated with a protective film. Metal corners 10 are welded to the four corners of the reinforcing layer 9. The reinforcing layer 9 can improve the overall structural strength of the outer frame 1 and reduce the impact on the structural strength under long-term pressure. The metal corners further improve the structural strength at the corners.

[0025] Based on the above structure, the front of the frame 3 7 is provided with an annular groove 11 that can accommodate the reinforcing layer 9. The cross-sectional area of ​​the reinforcing layer 9 is smaller than that of the frame 3 7. Thus, the reinforcing layer 9 is embedded in the outer frame 1, which avoids its edges being exposed and affecting the sealing performance during use while ensuring structural strength.

[0026] Combined with appendix Figure 2 The filter plate 2 has an extension side 8 on its outer side that matches the shape of the outer frame 1. The extension side 8 is fixed between the first frame 5 and the second frame 6. The extension side 8 is relatively thin to avoid having a significant impact on the overall thickness of the outer frame 1.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-strength corrosion-resistant filter plate, characterized in that: It includes an outer frame (1) and a filter plate (2); the back of the filter plate (2) is provided with filter cloth; the outer frame (1) is annular, and the filter plate (2) is located inside the outer frame (1); the middle of the filter plate (2) is provided with a liquid inlet hole (3), and the front of the filter plate (2) and around the liquid inlet hole (3) are provided with several limiting protrusions (4); The outer frame (1) includes frame one (5), frame two (6), and frame three (7) in sequence; a reinforcing layer (9) is provided between frame two (6) and frame three (7), and the reinforcing layer (9) is a ring-shaped metal frame; metal corners (10) are welded to the four corners of the reinforcing layer (9).

2. The high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The outer side of the outer frame (1) is rectangular, and its corners are all rounded.

3. The high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The limiting protrusions (4) are all frustum-shaped, with their end faces flush with the outer frame (1).

4. The high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The filter plate (2) has an extension side (8) on its outer side that matches the shape of the outer frame (1), and the extension side (8) is fixed between frame one (5) and frame two (6).

5. A high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The surface of the reinforcing layer (9) is tin-plated and coated with a protective film.

6. A high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The front of the frame three (7) is provided with an annular groove (11) that can accommodate the reinforcing layer (9), and the cross-sectional area of ​​the reinforcing layer (9) is smaller than that of the frame three (7).

7. A high-strength corrosion-resistant filter plate according to claim 1, characterized in that: The frame one (5), frame two (6), and frame three (7) are made of polyvinylidene fluoride, and the outer sides of frame one (5) and frame three (7) are covered with a nitrile rubber layer.

Images