Air-water mixed backwashing device for ultrafiltration system

Abstract

The utility model discloses a gas water mixing backwash device for ultrafiltration system, including filter jar: the bottom fixedly connected with the liquid resistance board in filter jar inner chamber, the top of liquid resistance board is provided with the top plate, install a plurality of filter core between the liquid resistance board and top plate, the top of top plate is provided with backflush subassembly, backflush subassembly includes the fixed disc of fixed mounting in filter jar inner chamber top, the bottom fixed mounting of fixed disc has a plurality of wenqi ejector, the bottom end of wenqi ejector inserts in the inner chamber of filter core, and the air pipe is communicated with a plurality of wenqi ejector's air inlet hole. The utility model discloses through the cooperation of filter jar, filter core, outlet pipe and inlet pipe, filters water source, and under the cooperation of backflush subassembly and blow-off pipe, mixes gas water and carries out reverse flushing discharge to the impurity in filter core inner chamber, can reach the purpose of reverse flushing and cleaning effect good.

Description

Technical Field

[0001] This utility model belongs to the field of ultrafiltration system technology, and in particular relates to an air-water mixing backwashing device for ultrafiltration systems. Background Technology

[0002] Air-water mixing backwashing of an ultrafiltration system is an operation method used to clean the ultrafiltration membrane. During the backwashing process, compressed air and water are mixed in a certain proportion and then delivered to the ultrafiltration membrane module through a specific device. The air-water mixture generates a strong scouring and turbulence effect on the membrane surface, causing the contaminants attached to the membrane pores and membrane surface to loosen and fall off, and then be discharged from the system with the backwash water.

[0003] In ultrafiltration systems, long-term use of filter cartridges can lead to the accumulation of impurities inside, affecting filtration efficiency and system performance. Therefore, regular cleaning of the filter cartridges is necessary. However, due to the limited impact force of water in some ultrafiltration systems, simple water rinsing is insufficient to effectively remove stubborn impurities such as scale and microbial membranes that adhere to the inner wall of the filter cartridge. To address this, an air-water mixed backwashing device for ultrafiltration systems is needed. This device uses a venturi jet to mix air and water through backwashing, accelerating the water flow with gas to generate a stronger impact force, effectively removing impurities from the inner wall of the filter cartridge and improving cleaning efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a gas-water mixing backwashing device for an ultrafiltration system. By using a venturi jet to mix gas and water through backwashing, the gas accelerates the water flow, generating a stronger impact force, which can effectively remove impurities from the inner wall of the filter element and improve the cleaning effect, thereby solving the above-mentioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A gas-water mixing backwashing device for an ultrafiltration system includes a filter tank: a liquid blocking plate is fixedly connected to the bottom of the inner cavity of the filter tank, a top plate is provided on the top of the liquid blocking plate, multiple filter elements are installed between the liquid blocking plate and the top plate, a backwashing assembly is provided on the top of the top plate, the backwashing assembly includes a fixed plate fixedly installed on the top of the inner cavity of the filter tank, multiple venturi ejectors are fixedly installed on the bottom of the fixed plate, the bottom end of the venturi ejector is inserted into the inner cavity of the filter element, the air inlet of the multiple venturi ejectors is connected to an air pipe, a cylinder is fixedly installed on the top of the filter tank, the output end of the cylinder passes through the inner cavity of the filter tank and is fixedly connected to a lifting plate, a water supply pipe is connected to the front side of the top of the filter tank, and water outlet pipes connected to the filter tank are fixedly installed on the bottom of the left side and the bottom of the right side of the filter tank.

[0006] Preferably, a plurality of pull rods are fixedly connected between the top plate and the filter element, and the top and bottom of the pull rods are fixedly connected to the top plate and the liquid blocking plate respectively by nuts.

[0007] Preferably, the bottom of the lifting plate is fixedly connected with multiple rubber plugs, which are inserted into the top of the venturi injector.

[0008] Preferably, a sealing plug is fixedly connected to the bottom of the surface of the Venturi injector, and the sealing plug is inserted into the top of the filter element.

[0009] Preferably, a drain pipe connected to the bottom of the filter tank is fixedly installed, and solenoid valves are fixedly installed on the surfaces of the water outlet pipe, water inlet pipe, and drain pipe.

[0010] The beneficial effects of this utility model are: 1. This utility model uses a filter tank, filter element, water outlet pipe and water inlet pipe in combination to filter water source. At the same time, with the cooperation of backwash component and sewage pipe, air and water are mixed and impurities in the inner cavity of filter element are backwashed and discharged, so as to achieve the purpose of backwashing to remove impurities and good cleaning effect. 2. This utility model uses a rubber plug to seal the top of the venturi injector during normal filtration, thereby preventing water from reaching the top of the fixed plate from the top of the filter element. 3. By designing the pull rod and nut, this utility model enables the filter element to be stably installed between the liquid blocking plate and the top plate, thereby ensuring the stability of the filter element during the filtration process. Attached Figure Description

[0011] in: Figure 1 This is a front cross-sectional view of one embodiment of the present invention; Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle; Figure 3 This is a three-dimensional schematic diagram of a liquid blocking plate, top plate, filter element and backflushing assembly according to an embodiment of the present invention; Figure 4 This is a three-dimensional exploded view of a liquid blocking plate, filter element and backflushing assembly according to an embodiment of the present invention.

[0012] The attached diagram lists the components represented by each number as follows: 1. Filter tank, 2. Liquid blocking plate, 3. Top plate, 4. Filter element, 5. Pull rod, 6. Backflushing assembly, 61. Fixed plate, 62. Venturi injector, 63. Sealing plug, 64. Air pipe, 65. Cylinder, 66. Lifting plate, 67. Rubber plug, 7. Water supply pipe, 8. Water outlet pipe, 9. Water inlet pipe, 10. Sewage pipe. Detailed Implementation

[0013] In the following description, embodiments of the gas-water mixing backwashing device for an ultrafiltration system according to the present invention will be described with reference to the accompanying drawings.

[0014] Figure 1-4 This invention illustrates an embodiment of an air-water mixing backwashing device for an ultrafiltration system, comprising a filter tank 1. A liquid-blocking plate 2 is fixedly connected to the bottom of the inner cavity of the filter tank 1. A top plate 3 is provided on the top of the liquid-blocking plate 2. Multiple filter elements 4 are installed between the liquid-blocking plate 2 and the top plate 3. Multiple tie rods 5 are fixedly connected between the top plate 3 and the filter elements 4. The top and bottom of the tie rods 5 are respectively fixedly connected to the top plate 3 and the liquid-blocking plate 2 by nuts. The tie rods 5 and nuts ensure that the filter elements 4 are stably installed between the liquid-blocking plate 2 and the top plate 3, thereby ensuring the stability of the filter elements 4 during the filtration process. A backwashing assembly 6 is provided on the top of the top plate 3. The backwashing assembly 6 includes a fixing plate 61 fixedly installed on the top of the inner cavity of the filter tank 1. Multiple venturi ejectors 62 are fixedly installed on the bottom of the fixing plate 61. The bottom ends of the venturi ejectors 62 are inserted into the inner cavity of the filter elements 4. The air inlets of the multiple venturi ejectors 62 are connected to air... Pipe 64, a cylinder 65 is fixedly installed on the top of filter tank 1. The output end of cylinder 65 passes through the inner cavity of filter tank 1 and is fixedly connected to lifting plate 66. Multiple rubber plugs 67 are fixedly connected to the bottom of lifting plate 66. The rubber plugs 67 are inserted into the top of venturi injector 62. A sealing plug 63 is fixedly connected to the bottom of the surface of venturi injector 62. The sealing plug 63 is inserted into the top of filter element 4. By setting the rubber plugs 67, the top of venturi injector 62 is blocked during normal filtration, thereby preventing water from the top of filter element 4 from reaching the top of fixed plate 61. A water supply pipe 7 is connected to the front of the top of filter tank 1. Water outlet pipes 8 connected to filter tank 1 are fixedly installed on the bottom of the left and right sides of filter tank 1. A sewage pipe 10 connected to the bottom of filter tank 1 is fixedly installed. Solenoid valves are fixedly installed on the surface of water outlet pipe 8, water inlet pipe 9 and sewage pipe 10.

[0015] Working principle: When this utility model is in use, water enters the bottom of the inner cavity of the filter tank 1 through the inlet pipe 9. The water enters the inner cavity of the filter element 4 from the bottom of the liquid blocking plate 2, and only enters the area above the liquid blocking plate 2 through the surface pores of the filter element 4, and is discharged through the outlet pipe 8. During backwashing, the solenoid valve controls the outlet pipe 8 and the inlet pipe 9 to close, and the drain pipe 10 to open. At this time, the cylinder 65 starts and drives the lifting plate 66 to rise, so that the rubber plug 67 releases the seal on the top of the Venturi injector 62. The external water pump starts and supplies water through the water supply pipe 7 to the filter element 4. Water is supplied to the inner cavity of filter tank 1, filling the area from the top of the fixed plate 61 to the top of the inner cavity of filter tank 1 with water. At the same time, the external air compressor starts and supplies air to the inner cavity of air pipe 64. Under the action of water pressure, the water enters the inner cavity of Venturi injector 62, and at the same time, the gas enters the inner cavity of Venturi injector 62, accelerating the water supply. The air-water mixture impacts the inner cavity of filter element 4, washing away impurities in the inner wall of filter element 4. The washed-off impurities fall from the bottom of filter element 4 to the bottom of the inner cavity of filter tank 1 and are discharged from the inner cavity of filter tank 1 only through drain pipe 10.

[0016] In summary, this air-water mixing backwashing device for ultrafiltration systems filters water by using the filter tank 1, filter element 4, outlet pipe 8, and inlet pipe 9 in conjunction with the backwashing component 6 and drain pipe 10. Simultaneously, it mixes air and water and backwashes and discharges impurities from the inner cavity of filter element 4, thus achieving the purpose of backwashing to remove impurities and achieve good cleaning effect.

Claims

1. A gas-water mixing backwashing device for an ultrafiltration system, characterized in that, Includes a filter tank (1): a liquid blocking plate (2) is fixedly connected to the bottom of the inner cavity of the filter tank (1), a top plate (3) is provided on the top of the liquid blocking plate (2), a plurality of filter elements (4) are installed between the liquid blocking plate (2) and the top plate (3), a backwash assembly (6) is provided on the top of the top plate (3), the backwash assembly (6) includes a fixed plate (61) fixedly installed on the top of the inner cavity of the filter tank (1), a plurality of Venturi injectors (62) are fixedly installed on the bottom of the fixed plate (61), the Venturi injectors The bottom end of (62) is inserted into the inner cavity of the filter element (4). The air inlet of the multiple Venturi injectors (62) is connected to the air pipe (64). The top of the filter tank (1) is fixedly installed with a cylinder (65). The output end of the cylinder (65) passes through the inner cavity of the filter tank (1) and is fixedly connected to a lifting plate (66). The front side of the top of the filter tank (1) is connected to a water supply pipe (7). The bottom left and bottom right sides of the filter tank (1) are both fixedly installed with water outlet pipes (8) connected to the filter tank (1).

2. The gas-water mixing backwashing device for an ultrafiltration system according to claim 1, characterized in that, Multiple pull rods (5) are fixedly connected between the top plate (3) and the filter element (4). The top and bottom of the pull rods (5) are fixedly connected to the top plate (3) and the liquid blocking plate (2) respectively by nuts.

3. The gas-water mixing backwashing device for an ultrafiltration system according to claim 2, characterized in that, The bottom of the lifting plate (66) is fixedly connected with a plurality of rubber plugs (67), which are inserted into the top of the Venturi injector (62).

4. The gas-water mixing backwashing device for an ultrafiltration system according to claim 3, characterized in that, A sealing plug (63) is fixedly connected to the bottom of the surface of the Venturi injector (62), and the sealing plug (63) is inserted into the top of the filter element (4).

5. The gas-water mixing backwashing device for an ultrafiltration system according to claim 4, characterized in that, The bottom of the filter tank (1) is fixedly installed with a drain pipe (10) connected to it, and solenoid valves are fixedly installed on the surfaces of the water outlet pipe (8), water inlet pipe (9) and drain pipe (10).

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