Pressure filtration equipment based on filter membrane

Abstract

The utility model relates to the technical field of pressure filtration, in particular to pressure filtration equipment based on a filter membrane, which comprises a filter cartridge, an extrusion cartridge is communicated with the bottom of the filter cartridge, and a sealing plug driven by an air cylinder is slidably sealed in an inner cavity of the extrusion cartridge. According to the pressure filtration equipment based on the filter membrane, efficient and continuous filtration is achieved, continuous operation of filtration and cleaning is achieved through dynamic switching of the filter membrane assembly and alternate use of the compression-resistant pieces, shutdown cleaning is not needed, the production efficiency is remarkably improved, and automatic cleaning and deslagging are achieved; automatic residue scraping, high-pressure flushing and waste water discharging are achieved, manual intervention is thoroughly avoided, the sealing stability is high, dynamic sealing is kept during filter membrane switching through the matched design of a lifting pressing ring and an elastic connecting belt, and pressure leakage is prevented; the compression-resistant sheet enhances the structural rigidity, and sealing failure caused by deformation under high pressure is avoided.

Description

Technical Field

[0001] This utility model relates to the field of pressure filtration technology, specifically a pressure filtration device based on a filter membrane. Background Technology

[0002] Traditional pressure filtration equipment commonly suffers from the following problems in the coating filtration process:

[0003] Low filtration efficiency: Conventional equipment relies on a single filter membrane structure. When impurities accumulate, the machine needs to be stopped for manual cleaning, which leads to filtration interruption and affects continuous production.

[0004] Incomplete cleaning: Residue easily adheres to the surface of the filter membrane, which is difficult to remove completely by traditional rinsing methods. Long-term accumulation can easily cause filter membrane blockage or damage.

[0005] Insufficient sealing: Seal failure during filter membrane switching leads to pressure fluctuations and liquid leakage, affecting filtration accuracy and equipment stability;

[0006] Low level of automation: Frequent manual intervention makes it impossible to achieve full-process automated control of filtration, cleaning, and slag discharge.

[0007] Therefore, there is an urgent need for a pressure filtration device that can achieve high-efficiency filtration, automatic cleaning, reliable sealing, and continuous operation. Utility Model Content

[0008] In view of the shortcomings of the prior art, this utility model provides a pressure filtration device based on a filter membrane, which solves the problems mentioned above.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a pressure filtration device based on a filter membrane, including a filter cylinder, the bottom of which is connected to a squeezing cylinder, the inner cavity of which is slidably sealed with a sealing plug driven by a cylinder, the bottom of which is connected to the upper middle section of the squeezing cylinder through a conveying channel, and the inner cavity of which is driven by a transmission mechanism to a filter membrane assembly.

[0010] The filter membrane assembly includes an elastic connecting strip, the inner cavity of which is fixedly connected a plurality of filter sheets and pressure-resistant sheets arranged in an alternating manner for filtering materials;

[0011] The filter membrane assembly passes through one side of the extrusion cylinder and extends to the other side of the extrusion cylinder. The inner cavity of the extrusion cylinder is provided with a through groove for the filter membrane assembly to pass through. The bottom of the through groove is slidably connected to a lifting pressure ring driven by a cylinder that abuts against an elastic connecting strip.

[0012] The inner cavity of the extrusion cylinder, located above the filter membrane assembly, is connected to a three-way valve. The other two ends of the three-way valve are connected to an inlet pipe and an outlet pipe, respectively. During filtration, the coating material to be filtered is added to the filter cylinder. Under gravity, the coating material enters the extrusion cylinder. A cylinder drives the sealing plug downwards, applying pressure to the coating material inside, forcing it through the filter plate to the bottom. Impurities accumulate above the filter plate. This process is repeated until impurities accumulate to a certain extent. At this point, the sealing plug moves above the filter membrane assembly, and then the lifting pressure ring descends, no longer pressing against the elastic connecting belt. The elastic connecting belt then moves, switching the anti-pressure plate below the sealing plug. Impurities above the filter plate are scraped off by the inner wall of the filter cylinder's through-groove and remain inside the filter cylinder, then move to the top of the anti-pressure plate, which is now fully in place. Then, the lifting pressure ring is raised to squeeze the elastic connecting strip to form a seal. At this time, the anti-pressure plate is fixed in place. Then, the water inlet pipe end of the three-way valve is opened, and the sealing plug is raised. The water in the three-way valve enters the squeezing cylinder at high speed under negative pressure to flush the residual residue inside. The anti-pressure plate can prevent excessive deformation. After flushing, the water outlet pipe section of the three-way valve is opened and the water inlet pipe is closed. Then, the sealing plug is lowered to form positive pressure. Under pressure, the water mixed with impurities is completely discharged through the water outlet pipe of the three-way valve. Then, the sealing plug is raised and the above steps are repeated to switch the filter plate into the squeezing cylinder. By switching the filter plate and the anti-pressure plate in the squeezing cylinder, and with the positive and negative pressure, the coating can be effectively filtered while the internally filtered impurities can be flushed and discharged without manual processing, and the sealing effect can be guaranteed when switching effectively.

[0013] As a further embodiment of this utility model: the transmission mechanism includes connecting boxes fixed on both sides of the extrusion cylinder, and the inner cavities of the two connecting boxes are rotatably connected to transmission rollers that are connected to the filter membrane assembly. The bottom of the two connecting boxes is provided with a collection pipe. The transmission rollers drive the filter membrane assembly to move left and right, thereby driving the filter sheet, anti-pressure sheet and elastic connecting belt to switch the connection position with the inner cavity of the extrusion cylinder.

[0014] As a further embodiment of this utility model: the filter sheet and the pressure-resistant sheet are both circular sheets that are adapted to the inner cavity of the extrusion cylinder, which can be effectively adapted to achieve the effects of separation and pressure-resistant sealing.

[0015] As a further embodiment of this utility model: the inner cavity of the through groove is rotatably connected to a guide roller that is connected to the filter membrane assembly for transmission. The guide roller guides the filter membrane assembly and prevents frictional loss during its movement.

[0016] As a further embodiment of this utility model: the connection between the conveying channel and the extrusion cylinder is located below the initial position of the sealing plug.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] High-efficiency continuous filtration:

[0019] By dynamically switching the filter membrane assembly and alternating the use of anti-pressure plates, continuous filtration and cleaning operations can be achieved without stopping the machine for cleaning, significantly improving production efficiency.

[0020] Automated cleaning and slag removal:

[0021] By combining three-way valve control, positive and negative pressure switching, and filter membrane assembly movement, automatic residue scraping, high-pressure rinsing, and wastewater discharge are achieved, completely eliminating the need for manual intervention.

[0022] Strong sealing stability:

[0023] The combination design of the lifting pressure ring and the elastic connecting belt maintains a dynamic seal during filter membrane switching to prevent pressure leakage; the pressure-resistant sheet enhances the structural rigidity and avoids seal failure caused by deformation under high pressure.

[0024] Extending filter membrane life:

[0025] The guide roller reduces frictional loss of the filter membrane assembly, and the pressure-resistant plate shares the mechanical load of the filter plate, reducing the risk of filter membrane damage.

[0026] Structural adaptability optimization:

[0027] The filter and pressure-resistant sheet are designed as circular sheets that fit tightly into the inner cavity of the extrusion cylinder to ensure separation accuracy and pressure-resistant sealing effect.

[0028] The connection point of the conveying channel is located below the initial position of the sealing plug to prevent impurities from flowing back. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of this utility model;

[0030] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0031] Figure 3 This is a top view of the structure of the filter membrane assembly of this utility model;

[0032] Figure 4 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0033] In the diagram: 1. Filter cylinder; 2. Extrusion cylinder; 3. Conveying channel; 4. Sealing plug; 5. Three-way valve; 6. Connecting box; 7. Drive roller; 8. Filter disc; 9. Elastic connecting belt; 10. Anti-compression plate; 11. Through groove; 12. Guide roller; 13. Lifting pressure ring; 14. Collection pipe; 15. Inlet pipe; 16. Outlet pipe. Detailed Implementation

[0034] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0035] Please see Figure 1-4 This utility model provides a technical solution: a pressure filtration device based on a filter membrane, including a filter cylinder 1, a squeezing cylinder 2 connected to the bottom of the filter cylinder 1, a sealing plug 4 driven by a cylinder slidingly sealing the inner cavity of the squeezing cylinder 2, the bottom of the filter cylinder 1 being connected to the middle and upper section of the squeezing cylinder 2 through a conveying channel 3, and a filter membrane assembly being driven through a transmission mechanism in the inner cavity of the squeezing cylinder 2.

[0036] The filter membrane assembly includes an elastic connecting belt 9, and a plurality of filter sheets 8 and pressure-resistant sheets 10 arranged in an alternating manner for filtering materials are fixedly connected to the inner cavity of the elastic connecting belt 9.

[0037] The filter membrane assembly passes through one side of the extrusion cylinder 2 and extends to the other side of the extrusion cylinder 2. The inner cavity of the extrusion cylinder 2 is provided with a through groove 11 for the filter membrane assembly to pass through. The bottom of the through groove 11 is slidably connected to a lifting pressure ring 13 driven by a cylinder and abutting against the elastic connecting band 9.

[0038] The inner cavity of the extrusion cylinder 2, located above the filter membrane assembly, is connected to a three-way valve 5. The other two ends of the three-way valve 5 are connected to an inlet pipe 15 and an outlet pipe 16, respectively. During filtration, the coating material to be filtered is added to the filter cylinder 1. Under gravity, the coating material enters the interior of the extrusion cylinder 2. At this time, a cylinder drives the sealing plug 4 downwards, applying pressure to the coating material inside, causing it to pass through the filter plate 8 and be filtered downwards. Impurities accumulate above the filter plate 8. This process is repeated until the impurities accumulate to a certain extent. Then, the sealing plug 4 moves above the filter membrane assembly, and the lifting pressure ring 13 is driven down, no longer pressing against the elastic connecting belt 9. The elastic connecting belt 9 is then driven to move, switching the anti-pressure plate 10 below the sealing plug 4. At this point, the impurities above the filter plate 8 are scraped off by the inner wall of the through groove 11 in the inner wall of the filter cylinder 1 and remain inside the filter cylinder 1. They then move to the top of the anti-pressure plate 10. After the anti-pressure plate 10 has completely moved into place... The lifting pressure ring 13 is raised to compress the elastic connecting strip 9, forming a seal. At this time, the anti-pressure plate 10 is fixed in place. Then, the water inlet pipe 15 of the three-way valve 5 is opened, and the sealing plug 4 is raised. The water in the three-way valve 5 enters the extrusion cylinder 2 at high speed under negative pressure to flush the residual residue inside. The anti-pressure plate 10 can prevent excessive deformation. After flushing, the water outlet pipe 16 of the three-way valve 5 is opened and the water inlet pipe 15 is closed. Then, the sealing plug 4 is lowered to form positive pressure. Under pressure, the water mixed with impurities is completely discharged through the water outlet pipe 16 of the three-way valve 5. Then, the sealing plug 4 is raised, and the above steps are repeated to switch the filter plate 8 into the extrusion cylinder 2. By switching the filter plate 8 and the anti-pressure plate 10 in the extrusion cylinder 2, and with the positive and negative pressure, the coating can be effectively filtered while the internally filtered impurities can be flushed and discharged without manual processing, and the sealing effect can be guaranteed when switching effectively.

[0039] The transmission mechanism includes connecting boxes 6 fixed on both sides of the extrusion cylinder 2. The inner cavities of the two connecting boxes 6 are rotatably connected to transmission rollers 7 that are connected to the filter membrane assembly. The bottom of the two connecting boxes 6 is provided with collection pipes 14. The transmission rollers 7 drive the filter membrane assembly to move left and right, thereby driving the filter sheet 8, the anti-compression sheet 10 and the elastic connecting belt 9 to switch their connection positions with the inner cavity of the extrusion cylinder 2.

[0040] Both the filter sheet 8 and the pressure-resistant sheet 10 are circular sheets that fit the inner cavity of the extrusion cylinder 2, which can effectively fit together to achieve the effects of separation and pressure-resistant sealing.

[0041] The inner cavity of the through groove 11 is rotatably connected to a guide roller 12 that is connected to the filter membrane assembly for transmission. The guide roller 12 guides the filter membrane assembly and prevents frictional loss during its movement.

[0042] The connection between the conveying channel 3 and the extrusion cylinder 2 is located below the initial position of the sealing plug 4.

[0043] High-efficiency continuous filtration:

[0044] By dynamically switching the filter element 8 and the anti-pressure element 10 in the filter membrane assembly, continuous filtration and cleaning operations can be achieved without stopping the machine for cleaning, which significantly improves production efficiency.

[0045] Automated cleaning and slag removal:

[0046] By combining the control of the three-way valve 5, the switching of positive and negative pressure and the movement of the filter membrane assembly, the system can automatically scrape off residue, perform high-pressure rinsing and discharge wastewater, completely avoiding manual intervention.

[0047] Strong sealing stability:

[0048] The design of the lifting pressure ring 13 and the elastic connecting belt 9 maintains dynamic sealing during filter membrane switching to prevent pressure leakage; the pressure-resistant plate 10 enhances structural rigidity and avoids sealing failure caused by deformation under high pressure.

[0049] Extending filter membrane life:

[0050] The guide roller 12 reduces frictional loss of the filter membrane assembly, and the pressure-resistant plate 10 shares the mechanical load of the filter plate 8, reducing the risk of filter membrane damage.

[0051] Structural adaptability optimization:

[0052] The filter sheet 8 and the pressure-resistant sheet 10 are designed as circular sheets that fit tightly into the inner cavity of the extrusion cylinder 2 to ensure separation accuracy and pressure-resistant sealing effect.

[0053] The connection position of the conveying channel 3 is located below the initial position of the sealing plug 4 to prevent impurities from flowing back.

[0054] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A filter membrane based pressure filtration apparatus comprising a filter cartridge (1), characterized in that: The bottom of the filter cylinder (1) is connected to the extrusion cylinder (2), and the inner cavity of the extrusion cylinder (2) is slidably sealed with a sealing plug (4) driven by a cylinder. The bottom of the filter cylinder (1) is connected to the middle and upper section of the extrusion cylinder (2) through a conveying channel (3), and the inner cavity of the extrusion cylinder (2) is driven by a transmission mechanism to carry a filter membrane assembly. The filter membrane assembly includes an elastic connecting strip (9), and the inner cavity of the elastic connecting strip (9) is fixedly connected with a plurality of filter sheets (8) and pressure-resistant sheets (10) arranged in an alternating manner for filtering materials. The filter membrane assembly passes through one side of the extrusion cylinder (2) and extends to the other side of the extrusion cylinder (2). The inner cavity of the extrusion cylinder (2) is provided with a through groove (11) for the filter membrane assembly to pass through. The bottom of the through groove (11) is slidably connected to a lifting pressure ring (13) driven by a cylinder and abutting against the elastic connecting strip (9). The inner cavity of the extrusion cylinder (2) located above the filter membrane assembly is connected to a three-way valve (5), and the other two ends of the three-way valve (5) are respectively connected to an inlet pipe (15) and an outlet pipe (16).

2. A pressure filter apparatus based on filter membranes according to claim 1, characterized in that The transmission mechanism includes connecting boxes (6) fixed on both sides of the extrusion cylinder (2). The inner cavities of the two connecting boxes (6) are rotatably connected to transmission rollers (7) that are connected to the filter membrane assembly. The bottom of the two connecting boxes (6) is provided with collection pipes (14).

3. A filter membrane based pressure filtration apparatus as claimed in claim 1, wherein: Both the filter sheet (8) and the pressure-resistant sheet (10) are circular sheets that fit the inner cavity of the extrusion cylinder (2).

4. A filter membrane based pressure filtration apparatus as claimed in claim 1, wherein: The inner cavity of the through groove (11) is rotatably connected to a guide roller (12) that is connected to the filter membrane assembly for transmission.

5. A filter membrane based pressure filtration apparatus as claimed in claim 1, wherein: The connection between the conveying channel (3) and the extrusion cylinder (2) is located below the initial position of the sealing plug (4).

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