A multi-stage filtration structure for biopharmaceutical production

Abstract

This utility model relates to the field of filtration structure technology, specifically a multi-stage filtration structure for biopharmaceutical production, including a mechanical filter tank and multiple filter elements. The mechanical filter tank includes a top cover, a bottom cover, and a tank body. A base plate is fixedly connected to the bottom of the tank body, and multiple connecting pipes are fixedly connected to the upper surface of the base plate. A flushing column is rotatably connected to the upper end of each connecting pipe, and multiple spray nozzles are provided on the side of the flushing column. The filter elements are hollow structures, and multiple filter elements are located outside the flushing column. Each of the multiple connecting pipes is connected to a solenoid valve, and the other end of the solenoid valve is connected to a water outlet pipe. The top cover is connected to a water inlet pipe, and a drain pipe is connected to the side of the tank body. One end of the water inlet pipe is connected to a raw water tank, and the other end of the water outlet pipe is connected to a softening filter tank. This utility model uses a single solenoid valve to control a single connecting pipe, cleaning only one filter element, so that the water flow cleans only one filter element, thereby avoiding malfunctions at the water outlet due to excessive pressure during backwashing.

Description

Technical Field

[0001] This utility model relates to a filtration structure, and more particularly to a multi-stage filtration structure for biopharmaceutical production, belonging to the field of filtration structure technology. Background Technology

[0002] In the field of biopharmaceutical production, production water typically requires multi-stage filtration to ensure it meets production standards. However, as usage time increases, filter cartridges inevitably absorb a large amount of impurities, leading to a gradual decrease in filtration efficiency. To effectively extend the lifespan of filter cartridges and reduce the costs and production interruption risks associated with frequent cartridge replacements, most existing filters are equipped with backwashing functions. Conventional backwashing involves introducing water through the bottom outlet pipe to directly clean the inside of the filter. However, when the water flows to clean the entire interior of the filter, a large water pressure and flow rate are required to maintain a good cleaning effect. Consequently, the bottom outlet needs to withstand significant pressure during backwashing, which places extremely high demands on the structural strength and sealing performance of the bottom outlet. Under prolonged high pressure, the bottom outlet is prone to malfunction.

[0003] Therefore, there is an urgent need to improve the multi-stage filtration structure used in biopharmaceutical production in order to solve the aforementioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a multi-stage filtration structure for biopharmaceutical production. When the filter element needs to be cleaned, the water in the mechanical filter tube is first drained, then the drain pipe is opened and the pneumatic three-way valve is activated. Water flows from the outlet pipe through the solenoid valve to the connecting pipe, and then flows out through the flushing column and spray nozzle to clean the filter element. Multiple solenoid valves control multiple connecting pipes respectively, and a single solenoid valve controls a single connecting pipe, cleaning only one filter element. During flushing, only one solenoid valve is opened, so that the water flow cleans only one filter element, thereby avoiding malfunctions at the outlet due to excessive pressure during backwashing.

[0005] To achieve the above objectives, the main technical solution adopted by this utility model includes: a mechanical filter tank and multiple filter elements. The mechanical filter tank includes a top cover, a bottom cover, and a tank body. A base plate is fixedly connected to the bottom of the tank body. Multiple connecting pipes are fixedly connected to the upper surface of the base plate. A flushing column is rotatably connected to the upper end of each connecting pipe. Multiple water spray nozzles are provided on the side of the flushing column. The filter elements are hollow structures, and all multiple filter elements are located outside the flushing column. Each of the multiple connecting pipes is connected to a solenoid valve. The other end of each solenoid valve is connected to a water outlet pipe. The top cover is connected to a water inlet pipe. A sewage discharge pipe is connected to the side of the tank body. One end of the water inlet pipe is connected to a raw water tank, and one end of the water outlet pipe is connected to a softening filter tank.

[0006] Preferably, a flow guide is provided on the inner side of the top cover, and the plurality of filter elements are located directly below the flow guide.

[0007] Preferably, the outer surface of the connecting pipe is provided with a sealing ring, and the surface of the connecting pipe is provided with a plurality of through holes, the through holes being located below the sealing ring.

[0008] Preferably, a sealing sleeve is slidably connected to the outside of the connecting pipe, and a cylinder is provided between the sealing sleeve and the base plate.

[0009] Preferably, the bottom end of the sealing sleeve is connected to the outer surface of the connecting tube via a flexible connection.

[0010] Preferably, a sealing gasket is provided between the sealing ring and the sealing sleeve.

[0011] Preferably, the water outlet pipe is connected to a pneumatic three-way valve.

[0012] This utility model has at least the following beneficial effects: 1. When the filter element needs to be cleaned, first drain the water from the mechanical filter tube, then open the drain pipe and start the pneumatic three-way valve. Water flows from the outlet pipe through the solenoid valve to the connecting pipe, and then flows out through the flushing column and spray nozzle to clean the filter element. Multiple solenoid valves control multiple connecting pipes respectively. A single solenoid valve controls a single connecting pipe, and only one filter element is cleaned. During flushing, only one solenoid valve is opened, so that the water flow cleans only one filter element, thereby avoiding malfunction of the outlet due to excessive pressure during backwashing.

[0013] 2. Through the connecting pipe, sealing sleeve, and sealing ring, raw water can flow into the connecting pipe through the through hole during normal filtration. During backwashing, the cylinder pushes the sealing sleeve to connect with the sealing ring, closing the through hole, so that the backwash water flow acts on the filter element for cleaning. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A cross-sectional structural schematic diagram provided for this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 A schematic diagram of the connecting pipe structure provided by this utility model; Figure 4 A schematic diagram of the sealing sleeve structure provided by this utility model; Figure 5 A schematic diagram of the overall structure of this utility model.

[0015] In the diagram, 1. Mechanical filter tank; 2. Filter element; 4. Top cover; 5. Bottom cover; 6. Tank body; 7. Base plate; 8. Connecting pipe; 9. Flushing column; 10. Spray nozzle; 11. Solenoid valve; 12. Outlet pipe; 13. Inlet pipe; 14. Sewage pipe; 15. Raw water tank; 16. Softening filter tank; 17. Flow guide; 18. Sealing ring; 19. Through hole; 20. Sealing sleeve; 21. Cylinder; 22. Sealing gasket; 23. Pneumatic three-way valve. Detailed Implementation

[0016] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0017] like Figures 1-5 As shown, the multi-stage filtration structure for biopharmaceutical production provided in this embodiment includes a mechanical filter tank 1 and multiple filter elements 2. The mechanical filter tank 1 includes a top cover 4, a bottom cover 5, and a tank body 6. A base plate 7 is fixedly connected to the bottom of the tank body 6. Multiple connecting pipes 8 are fixedly connected to the upper surface of the base plate 7. A flushing column 9 is rotatably connected to the upper end of the connecting pipes 8. Multiple spray nozzles 10 are provided on the side of the flushing column 9. The filter elements 2 have a hollow structure, and all filter elements 2 are located outside the flushing column 9. Each of the multiple connecting pipes 8 is connected to a solenoid valve 11. The other end of the solenoid valve 11 is connected to a water outlet pipe 12. The top cover 4 is connected to a water inlet pipe 13. A drain pipe 14 is connected to the side of the tank body 6. One end of the water inlet pipe 13 is connected to a raw water tank 15, and one end of the water outlet pipe 12 is connected to a softening filter tank 16. The water outlet pipe 12 is connected to a pneumatic three-way valve 23. The top cover 4 is equipped with a flow guide shroud 17. Multiple filter elements 2 are located directly below the flow guide shroud 17. During filtration, raw water flows from the raw water pipe to the mechanical filter tank 1. The raw water flows in from the top of the top cover 4 and then falls onto the top of the flow guide shroud 17. The flow guide shroud 17 directs the raw water to the inner wall of the tank 6. When it is necessary to clean the filter element 2, the water in the mechanical filter pipe is first drained. Then, the drain pipe 14 is opened and the pneumatic three-way valve 23 is activated. The water flows from the outlet pipe 12 through the solenoid valve 11 to the connecting pipe 8, and then flows out through the flushing column 9 and the spray nozzle 10 to clean the filter element 2. Multiple solenoid valves 11 control multiple connecting pipes 8 respectively. During flushing, only one solenoid valve 11 is opened, so that the water flow cleans only one filter element 2, thereby avoiding the outlet malfunction due to excessive pressure during backwashing.

[0018] The outer surface of the connecting pipe 8 is provided with a sealing ring 18, and multiple through holes 19 are opened on the surface of the connecting pipe 8. The through holes 19 are located below the sealing ring 18. A sealing sleeve 20 is slidably connected to the outer side of the connecting pipe 8. A cylinder 21 is provided between the sealing sleeve 20 and the bottom plate 7. The bottom end of the sealing sleeve 20 is connected to the outer surface of the connecting pipe 8 through a flexible connection. A sealing gasket 22 is provided between the sealing ring 18 and the sealing sleeve 20. After the raw water enters the tank 6, it flows from the outside of the filter element 2 to the inside of the filter element 2 for filtration, and then flows from the through holes 19 on the surface of the connecting pipe 8 into the inside of the connecting pipe 8. When backwashing, the cylinder 21 is activated, and the cylinder 21 pushes the sealing sleeve 20 to connect with the sealing ring 18, thereby closing the through holes 19.

[0019] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

Claims

1. A multi-stage filtration structure for biopharmaceutical production, comprising a mechanical filter canister (1) and multiple filter elements (2), characterized in that: The mechanical filter tank (1) includes a top cover (4), a bottom cover (5), and a tank body (6). A bottom plate (7) is fixedly connected to the bottom of the tank body (6). Multiple connecting pipes (8) are fixedly connected to the upper surface of the bottom plate (7). A flushing column (9) is rotatably connected to the upper end of the connecting pipe (8). Multiple spray nozzles (10) are provided on the side of the flushing column (9). The filter element (2) is a hollow structure. Multiple filter elements (2) are located outside the flushing column (9). Multiple connecting pipes (8) are connected to a solenoid valve (11). The other end of the solenoid valve (11) is connected to a water outlet pipe (12). The top cover (4) is connected to a water inlet pipe (13). A sewage pipe (14) is connected to the side of the tank body (6). One end of the water inlet pipe (13) is connected to a raw water tank (15). One end of the water outlet pipe (12) is connected to a softening filter tank (16).

2. The multi-stage filtration structure for biopharmaceutical production according to claim 1, characterized in that: The top cover (4) is provided with a flow guide (17) on the inside, and the multiple filter elements (2) are located directly below the flow guide (17).

3. The multi-stage filtration structure for biopharmaceutical production according to claim 1, characterized in that: The outer surface of the connecting pipe (8) is provided with a sealing ring (18), and the surface of the connecting pipe (8) is provided with a plurality of through holes (19), which are located below the sealing ring (18).

4. The multi-stage filtration structure for biopharmaceutical production according to claim 3, characterized in that: A sealing sleeve (20) is slidably connected to the outside of the connecting pipe (8), and a cylinder (21) is provided between the sealing sleeve (20) and the base plate (7).

5. The multi-stage filtration structure for biopharmaceutical production according to claim 4, characterized in that: The bottom end of the sealing sleeve (20) is connected to the outer surface of the connecting tube (8) via a flexible connection.

6. The multi-stage filtration structure for biopharmaceutical production according to claim 4, characterized in that: A sealing gasket (22) is provided between the sealing ring (18) and the sealing sleeve (20).

7. The multi-stage filtration structure for biopharmaceutical production according to claim 1, characterized in that: The water outlet pipe (12) is connected to a pneumatic three-way valve (23).

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