Automatic sludge cleaning device and filter press

Abstract

This utility model belongs to the field of environmental protection equipment technology, and discloses an automatic sludge cleaning device for plate and frame filter presses and a filter press. The automatic sludge cleaning device for plate and frame filter presses includes a main pipe, branch pipes, and nozzle assemblies. One end of the main pipe is connected to an air source. Multiple branch pipes are provided, and multiple nozzle assemblies are spaced apart and correspond one-to-one with multiple branch pipes. One end of a branch pipe is connected to the other end of the main pipe, and the other end of the branch pipe is connected to its corresponding nozzle assembly. The nozzle assembly is set between the plate and frame and the filter cloth and is configured to spray air onto the filter cloth. The main pipe is equipped with a main valve to control the opening and closing of the main pipe, and the branch pipes are equipped with branch valves to control the opening and closing of the branch pipes. The filter press includes a filter cloth, a plate and frame, and the automatic sludge cleaning device for plate and frame filter presses. The filter cloth covers the plate and frame, and the nozzle assembly and some branch pipes are set between the plate and frame and the filter cloth. This utility model uses the nozzle assembly to spray air onto the filter cloth, causing the filter cloth to vibrate and thus cleaning the sludge adhering to the filter cloth. It has a simple structure, reduces labor costs, and improves cleaning efficiency.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology, and in particular to an automatic plate and frame sludge cleaning device and a filter press. Background Technology

[0002] A filter press is a mechanical device that uses a special filter medium to apply pressure to a material, causing the liquid to seep out. It is a commonly used solid-liquid separation device. Filter presses are classified into chamber filter presses, plate and frame filter presses, belt filter presses, vertical filter presses, etc. A filter press consists of multiple filter plates and frames stacked together to form filter chambers, and uses pressure as the driving force for filtration. The filter plates are stable in performance, easy to operate, safe, and labor-saving. Metal and plastic steel filter plates are precision cast, resistant to high temperature and high pressure, and durable. Filter presses were used in chemical production in the early 18th century and are still widely used in chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramic, and environmental protection industries. A filter press includes a frame, a pressing mechanism, and a filtration mechanism. The filtration mechanism includes plates and frames and filter cloth. The plates and frames are covered by filter cloth. Sludge enters each filter chamber through the feed holes on the thrust plate. Solid particles, because their particle size is larger than the pore size of the filter cloth, are trapped in the filter chambers, and the filtrate flows out from the outlet holes below the plates and frames.

[0003] However, after the filter press is completed, the sludge has a certain stickiness and remains on the filter cloth of the plate and frame, which cannot be removed by itself. It is necessary to manually clean the sludge with a hand scraper, which is inefficient and has high labor costs.

[0004] Therefore, there is an urgent need for a device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an automatic sludge cleaning device for plate and frame filter cloths that can automatically clean sludge adhering to the filter cloth, with low labor costs and high cleaning efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] An automatic sludge cleaning device for plate and frame filter presses includes a main pipe, branch pipes, and nozzle assemblies. One end of the main pipe is connected to an air source. Multiple branch pipes are provided, and multiple nozzle assemblies are spaced apart and correspond one-to-one with each branch pipe. One end of each branch pipe is connected to the other end of the main pipe, and the other end of each branch pipe is connected to its corresponding nozzle assembly. The nozzle assembly is disposed between the plate and frame filter press and is configured to spray air onto the filter cloth. The main pipe is equipped with a main valve to control the opening and closing of the main pipe, and each branch pipe is equipped with a branch valve to control the opening and closing of the branch pipe.

[0008] Furthermore, the nozzle assembly includes a plurality of nozzles, each of which is connected to its corresponding branch pipe.

[0009] Furthermore, the plurality of nozzle assemblies are evenly spaced apart, and the plurality of nozzles in each nozzle assembly are evenly spaced apart.

[0010] Furthermore, the branch valve is located between the connection point of the branch pipe and the main pipe and the connection point of the branch pipe and the nozzle assembly.

[0011] Furthermore, the automatic plate and frame sludge cleaning device also includes a controller, which is connected to the main valve and the branch valve and is configured to control the opening and closing of the main valve and the branch valve.

[0012] Furthermore, one end of the main pipe is connected to the gas valve of the gas storage tank, and the controller is connected to the gas valve and configured to control the opening and closing of the gas valve.

[0013] Furthermore, the air valve is a control valve.

[0014] Furthermore, the main valve is a solenoid valve, and the branch valve is a solenoid pulse valve; or,

[0015] The main valve is an electromagnetic pulse valve, and the branch valve is an electromagnetic valve.

[0016] Another objective of this invention is to provide a filter press that is easy to clean.

[0017] To achieve this objective, the present invention adopts the following technical solution:

[0018] A filter press includes a filter cloth, a plate and frame, and the aforementioned automatic sludge cleaning device for the plate and frame. The filter cloth covers the plate and frame, and the nozzle assembly and part of the branch pipe are disposed between the plate and frame and the filter cloth.

[0019] Furthermore, the edge sealing area of ​​the filter cloth is provided with a sealing component.

[0020] Beneficial Effects: This utility model provides an automatic sludge cleaning device for plate and frame filter presses and a filter press. The automatic sludge cleaning device for plate and frame filter presses includes a main pipe, branch pipes, and nozzle assemblies. One end of the main pipe is connected to an air source. Multiple branch pipes are provided, and multiple nozzle assemblies are spaced apart and correspond one-to-one with multiple branch pipes. One end of each branch pipe is connected to the other end of the main pipe, and the other end of each branch pipe is connected to its corresponding nozzle assembly. The nozzle assembly is located between the plate and frame filter and the filter cloth and is configured to spray air onto the filter cloth. The main pipe is equipped with a main valve to control the opening and closing of the main pipe, and the branch pipes are equipped with branch valves to control the opening and closing of the branch pipes. The filter press includes a filter cloth, a plate and frame filter, and the automatic sludge cleaning device for plate and frame filter presses. The filter cloth covers the plate and frame filter, and the nozzle assembly and some branch pipes are located between the plate and frame filter and the filter cloth. The automatic sludge cleaning device for plate and frame filter presses provided by this utility model sprays air onto the filter cloth through the nozzle assembly, causing the filter cloth to vibrate and thus cleaning the sludge adhering to the filter cloth. The structure is simple, reduces labor costs, and improves cleaning efficiency. Attached Figure Description

[0021] Figure 1 This is a front view of the automatic sludge cleaning device for plates and frames provided in this embodiment of the utility model;

[0022] Figure 2 This is a side view of the automatic sludge cleaning device for plates and frames provided in this embodiment of the utility model.

[0023] In the picture:

[0024] 100. Plate and frame filter; 200. Filter cloth;

[0025] 1. Main pipe; 11. Main valve; 2. Branch pipe; 21. Branch valve; 31. Nozzle. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] A filter press is a mechanical device that uses a special filter medium to apply pressure to a material, causing the liquid to seep out. It is a commonly used solid-liquid separation device, widely used in industries such as chemical, pharmaceutical, metallurgical, dye, food, brewing, ceramics, and environmental protection. A filter press includes a filtration mechanism, which consists of plates and frames covered by filter cloth. The plates and frames are covered by the filter cloth. Sludge enters each filter chamber through the feed holes on the thrust plate. Solid particles, because their diameter is larger than the pore size of the filter cloth, are trapped in the filter chamber. The filtrate flows out from the outlet holes below the plates and frames, thus achieving sludge filtration. After filtration, due to the stickiness of the sludge, it easily remains on the filter cloth of the plates and frames, specifically on the side of the filter cloth away from the plates and frames. It cannot be removed by itself and requires manual cleaning with a hand scraper, resulting in low efficiency, high labor costs, and potential damage to the filter cloth.

[0031] To address the aforementioned issues, this embodiment provides an automatic sludge cleaning device for plate and frame filter media. By spraying air onto the filter cloth through a nozzle assembly, the filter cloth vibrates, thereby cleaning the sludge adhering to the filter cloth. The device has a simple structure, reduces labor costs, and improves cleaning efficiency.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the automatic sludge cleaning device for plate and frame filter 100 includes a main pipe 1, branch pipes 2, and nozzle assemblies. One end of the main pipe 1 is connected to an air source. Multiple branch pipes 2 are provided, and multiple nozzle assemblies are provided at intervals. Multiple nozzle assemblies are connected to multiple branch pipes 2 in a one-to-one correspondence. Further, one end of the branch pipe 2 is connected to the other end of the main pipe 1, and the other end of the branch pipe 2 is connected to its corresponding nozzle assembly. The nozzle assembly is located between the plate and frame 100 and the filter cloth 200, and the nozzle assembly is configured to spray air onto the filter cloth 200 to make the filter cloth 200 vibrate, thereby causing the sludge adhering to the filter cloth 200 to automatically fall off, resulting in high cleaning efficiency.

[0033] Furthermore, in this embodiment, a gas storage tank is selected as the gas source. The gas storage tank is equipped with a gas valve, and one end of the main pipe 1 is connected to the gas valve of the gas storage tank. When the gas valve is open, the gas storage tank supplies gas to the main pipe 1; when the gas valve is closed, there is no airflow in the main pipe 1. Preferably, the gas valve is a control valve. By adjusting the gas flow rate through the control valve, the impact force of the air jet on the filter cloth 200 can be controlled according to the actual situation, ensuring that the sludge automatically falls off without damaging the filter cloth 200, thus improving the feasibility of this embodiment.

[0034] See Figure 2 In this embodiment, two main pipes 1 are provided, and multiple branch pipes 2 are respectively connected to the two main pipes 1. The main pipes 1 are also connected to the gas storage tank. The number of main pipes 1 can be determined according to the actual situation and is not specifically limited.

[0035] Furthermore, multiple nozzle assemblies are evenly spaced to ensure consistent vibration across different areas of the filter cloth 200. The main pipe 1 is equipped with a main valve 11 to control its opening and closing, and the branch pipe 2 is equipped with a branch valve 21 to control its opening and closing. After sludge dewatering, based on the area of ​​sludge adhered to the filter cloth 200, the main valve 11 and the corresponding branch valve 21 are opened, controlling the nozzle assembly to spray air onto that area. After cleaning, the main valve 11 and the branch valve 21 are closed, making the operation simple and efficient.

[0036] Furthermore, the branch valve 21 is located between the connection between the branch pipe 2 and the main pipe 1 and between the branch pipe 2 and the nozzle assembly, so as to individually control the jetting action of the nozzle assembly.

[0037] Furthermore, such as Figure 1 As shown, the nozzle assembly includes multiple nozzles 31, each of which is connected to its corresponding branch pipe 2 and is evenly spaced to further refine the segmentation of the filter cloth 200, ensuring that the vibration frequency generated at each point of the filter cloth 200 is the same.

[0038] The automatic sludge cleaning device for plate and frame structures also includes a controller connected to the main valve 11, branch valve 21, and air valve, which can control the opening and closing of the main valve 11, branch valve 21, and air valve. The controller for controlling the opening and closing of the valves is a common device in the prior art, and its specific structure will not be described in detail here.

[0039] Furthermore, the main valve 11 is a solenoid valve, and the branch valve 21 is a solenoid pulse valve. The controller opens the air valve, the main valve 11, and the branch valve 21. The valve of the branch valve 21 produces a rapid intermittent opening and closing effect, thereby forming a rapid intermittent blowing gas. The blowing gas acts on the side of the filter cloth 200 near the plate frame 100, and the filter cloth 200 vibrates, causing the sludge to fall off the filter cloth 200.

[0040] Of course, in other embodiments, the main valve 11 can be an electromagnetic pulse valve, and the branch valve 21 can be an electromagnetic valve. By opening the air valve, the main valve 11 and the branch valve 21 through the controller, the valve of the main valve 11 produces a rapid intermittent opening and closing effect, which can also form a rapid intermittent blowing gas, and act on the side of the filter cloth 200 near the plate frame 100. The filter cloth 200 vibrates, causing the sludge to fall off the filter cloth 200.

[0041] This embodiment also provides a filter press, which includes a filter cloth 200, a plate and frame 100, and the aforementioned automatic sludge cleaning device for the plate and frame. The filter cloth 200 covers the plate and frame 100, and the nozzle assembly and some branch pipes 2 are disposed between the plate and frame 100 and the filter cloth 200. During the filtration process, solid particles in the sludge are trapped because their particle size is larger than the pore size of the filter cloth 200, thus achieving a filtration effect.

[0042] Furthermore, the filter cloth 200 is made of polypropylene. Polypropylene does not easily absorb moisture in humid environments, which helps maintain the stability and filtration efficiency of the filter cloth 200. Polypropylene also has properties such as acid and alkali resistance, abrasion resistance, and high strength. Filter cloth 200 made of polypropylene has good filtration effect for sludge dewatering and a long service life. The specific properties of polypropylene are common knowledge and will not be elaborated further.

[0043] Furthermore, a sealing component is provided in the edge sealing area of ​​the filter cloth 200. Specifically, the edge sealing area of ​​the filter cloth 200 is the position where the filter cloth 200 contacts the edge of the plate frame 100. A sealing component is provided on the side of the edge sealing area of ​​the filter cloth 200 away from the plate frame 100. It can be understood that by providing a sealing component on the side of the edge sealing area of ​​the filter cloth 200 away from the plate frame 100 to reinforce the edge sealing area of ​​the filter cloth 200, leakage of material in the edge sealing area of ​​the filter cloth 200 can be prevented, and the filter cloth 200 will not interfere with the filtration of sludge, thereby improving the reliability of filtration. For example, the sealing assembly can be multiple rubber strips with adhesive layers made of epoxy resin. The multiple rubber strips with adhesive layers act on the edge sealing area of ​​the filter cloth 200. The sealing area of ​​the filter cloth 200 is located between the plate frame 100 and the multiple rubber strips with adhesive layers. Part of the epoxy resin penetrates the filter cloth 200 and bonds to the plate frame 100 to fix the edge sealing area of ​​the filter cloth 200 to the plate frame 100, thereby preventing the edge sealing area of ​​the filter cloth 200 from sliding, preventing material leakage, and improving filtration stability.

[0044] Of course, in other embodiments, the sealing effect of the edge sealing area of ​​the filter cloth 200 can also be improved in other ways to prevent material leakage. For example, a rubber latex can be applied to the side of the edge sealing area of ​​the filter cloth 200 near the plate frame 100. It is understood that by applying a rubber latex to the side of the edge sealing area of ​​the filter cloth 200 near the plate frame 100, a high-performance rubber sealing layer is formed, thereby preventing material leakage from the filter cloth 200 and improving reliability. Rubber latex is a commonly used adhesive, which is common knowledge, and its characteristics will not be described in detail in this embodiment.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An automatic sludge cleaning device for plates and frames, characterized in that, The device includes a main pipe (1), branch pipes (2), and nozzle assemblies. One end of the main pipe (1) is connected to an air source. Multiple branch pipes (2) are provided. Multiple nozzle assemblies are provided at intervals and correspond one-to-one with multiple branch pipes (2). One end of each branch pipe (2) is connected to the other end of the main pipe (1), and the other end of each branch pipe (2) is connected to its corresponding nozzle assembly. The nozzle assembly is located between the plate frame (100) and the filter cloth (200) and is configured to spray air onto the filter cloth (200). The main pipe (1) is equipped with a main valve (11) to control the opening and closing of the main pipe (1), and the branch pipes (2) are equipped with branch valves (21) to control the opening and closing of the branch pipes (2).

2. The automatic sludge cleaning device for plates and frames according to claim 1, characterized in that, The nozzle assembly includes a plurality of nozzles (31), each of which is connected to its corresponding branch pipe (2).

3. The automatic sludge cleaning device for plates and frames according to claim 2, characterized in that, The plurality of nozzle assemblies are evenly spaced apart, and the plurality of nozzles (31) of each nozzle assembly are evenly spaced apart.

4. The automatic sludge cleaning device for plates and frames according to claim 1, characterized in that, The branch valve (21) is located between the branch pipe (2) and the main pipe (1) and between the branch pipe (2) and the nozzle assembly.

5. The automatic sludge cleaning device for plates and frames according to claim 1, characterized in that, The automatic sludge cleaning device for plates and frames also includes a controller, which is connected to the main valve (11) and the branch valve (21) and is configured to control the opening and closing of the main valve (11) and the branch valve (21).

6. The automatic sludge cleaning device for plates and frames according to claim 5, characterized in that, One end of the main pipe (1) is connected to the gas valve of the gas storage tank, and the controller is connected to the gas valve and configured to control the opening and closing of the gas valve.

7. The automatic sludge cleaning device for plates and frames according to claim 6, characterized in that, The air valve is a control valve.

8. The automatic sludge cleaning device for plates and frames according to claim 1, characterized in that, The main valve (11) is a solenoid valve, and the branch valve (21) is a solenoid pulse valve; or, The main valve (11) is an electromagnetic pulse valve, and the branch valve (21) is an electromagnetic valve.

9. A filter press, characterized in that, The device includes a filter cloth (200), a plate and frame (100), and an automatic sludge cleaning device according to any one of claims 1-8, wherein the filter cloth (200) covers the plate and frame (100), and the nozzle assembly and part of the branch pipe (2) are disposed between the plate and frame (100) and the filter cloth (200).

10. The filter press according to claim 9, characterized in that, The edge sealing area of ​​the filter cloth (200) is provided with a sealing component.

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