A polyethylene fluoride membrane filtration equipment

Abstract

The present invention belongs to the technical field of polyethylene fluoride membrane filtration, and specifically refers to a polyethylene fluoride membrane filtration device, comprising a liquid tank, a suction filtration channel, a liquid inlet valve, an upward-type liquid supply mechanism, a flow-guiding covering mechanism, and a pressure-relief suction filtration mechanism. The suction filtration channel is connected to the upper wall of the liquid tank and is arranged to be through-connected. The liquid inlet valve is connected to one side of the liquid tank. The upward-type liquid supply mechanism is arranged on the suction filtration channel. The flow-guiding covering mechanism is arranged at the end of the suction filtration channel away from the liquid tank. The pressure-relief suction filtration mechanism is arranged inside the suction filtration channel. The upward-type liquid supply mechanism includes a liquid extraction mechanism and a liquid infusion mechanism. The present invention provides a polyethylene fluoride membrane filtration device that can monitor the pressure of the polyethylene fluoride membrane in real time during suction filtration operation, reduce the probability of membrane expansion of the polyethylene fluoride membrane, ensure the filtration effect of the liquid, and can monitor the blockage state of impurities on the surface of the polyethylene fluoride membrane in real time.

Description

Technical Field

[0001] The invention belongs to the technical field of polyethylene fluoride membrane filtration, and in particular relates to polyethylene fluoride membrane filtration equipment. Background Art

[0002] Polyethylene fluoride membranes (such as PTFE and PVDF) are high-performance filter materials with excellent chemical stability, high-temperature resistance, and hydrophobicity. They are widely used in the chemical, pharmaceutical, and environmental protection industries. Common fluorinated membrane types include PTFE (polytetrafluoroethylene) and PVDF (polyvinylidene fluoride).

[0003] The existing polyethylene fluoride membrane filtration equipment has the following problems:

[0004] Existing polyethylene fluoride membrane filtration equipment does not have the ability to monitor the pressure of the polyethylene fluoride membrane in real time during filtration, which causes the polyethylene fluoride membrane to filter under higher pressure, resulting in membrane expansion and reduced filtration efficiency of the liquid. In addition, traditional polyethylene fluoride membrane filtration equipment does not have the ability to monitor the blockage of the polyethylene fluoride membrane surface in real time. Therefore, it cannot meet the existing demand for the use of polyethylene fluoride membrane filtration equipment. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the existing technology, the present solution provides a polyethylene fluoride membrane filtration equipment that can monitor the pressure of the polyethylene fluoride membrane in real time during filtration operation, reduce the probability of membrane expansion of the polyethylene fluoride membrane, ensure the filtration effect of the liquid, and can monitor the clogging status of impurities on the surface of the polyethylene fluoride membrane in real time.

[0006] The technical solution adopted in this scheme is as follows: A polyethylene fluoride membrane filtration device proposed in this scheme includes a liquid box, a suction filtration channel, a liquid inlet valve, an upward liquid supply mechanism, a flow-guiding covering mechanism and a pressure-relief suction filtration mechanism, the suction filtration channel is connected and arranged on the upper wall of the liquid box, the suction filtration channel is a through-set, the liquid inlet valve is connected and arranged on one side of the liquid box, the upward liquid supply mechanism is arranged on the suction filtration channel, the flow-guiding covering mechanism is arranged at an end of the suction filtration channel away from the liquid box, the pressure-relief suction filtration mechanism is arranged inside the suction filtration channel, the upward liquid supply mechanism includes a liquid pumping mechanism and a liquid infusion mechanism, the liquid pumping mechanism is arranged on the upper wall of the liquid box, the liquid infusion mechanism is arranged on the side wall of the suction filtration channel, the flow-guiding covering mechanism includes a liquid guide mechanism and a filtering mechanism, the liquid guide mechanism is arranged on the upper wall of the suction filtration channel, the filtering mechanism is arranged on the inner wall of the liquid guide mechanism, the pressure-relief suction filtration mechanism includes an adsorption mechanism and a liquid discharge mechanism, the adsorption mechanism is arranged on the inner wall of the filter mechanism, and the liquid discharge mechanism is arranged on the bottom side wall of the liquid box.

[0007] As a further preferred embodiment of the present invention, the liquid extraction mechanism includes a liquid extraction pump, a liquid suction ring tube and a liquid extraction port, multiple groups of the liquid extraction pumps are arranged through the inner wall of the liquid tank, the liquid suction ring tube is arranged between the extraction ends of the liquid extraction pump inside the liquid tank, and multiple groups of the liquid extraction ports are arranged on the side wall of the liquid suction ring tube; the infusion mechanism includes a pipe rack and an infusion pipe, multiple groups of the pipes are arranged on the side wall of the suction channel, and the infusion pipe is arranged through the pipe rack at the discharge end of the liquid extraction pump.

[0008] During use, the external pipeline is connected to the liquid inlet valve, the liquid inlet valve is opened, the external pipeline is connected to the liquid tank, the liquid to be filtered flows into the liquid tank through the liquid inlet valve, and the liquid pump uses the extraction end to draw the liquid into the infusion tube through the suction ring tube and the liquid extraction port.

[0009] Preferably, the flow guiding mechanism includes an annular inclined plate, a T-shaped ring sleeve and a lower liquid joint, the annular inclined plate is arranged on the upper wall of the suction filter channel, the outer surface of the annular inclined plate and the outer surface of the suction filter channel are set at an obtuse angle, the T-shaped ring sleeve is arranged on the upper wall of the annular inclined plate, multiple groups of the lower liquid joints are penetrated by the inner wall of the T-shaped ring sleeve, a flow guiding cavity is formed between the annular inclined plate and the T-shaped ring sleeve, and one end of the infusion tube away from the liquid pump is connected to the lower liquid joint; the filtering mechanism includes a liquid storage cylinder, a filter ring cylinder, a groove and a polyethylene fluoride membrane strip, the filter ring cylinder is arranged on the inner wall of the T-shaped ring sleeve, the liquid storage cylinder is arranged on the inner wall of the filter ring cylinder, the liquid storage cylinder is opened at the upper end, multiple groups of the grooves are arranged on the side wall of the liquid storage cylinder, the groove is opened at one end, multiple groups of the polyethylene fluoride membrane strips are arranged between the bottom wall of the filter ring cylinder and the bottom wall of the groove, and the polyethylene fluoride membrane strips are connected to the filter ring cylinder.

[0010] When in use, the liquid inside the infusion tube flows into the cavity formed by the annular inclined plate and the T-ring sleeve. The annular inclined plate is inclined and the T-ring sleeve is vertically arranged. The end of the T-ring sleeve close to the annular inclined plate is in contact with the polyethylene fluoride membrane strip. Under the action of the inclined diversion of the annular inclined plate, the annular inclined plate drains the liquid to the side wall of the polyethylene fluoride membrane strip. The liquid is in the form of a hollow cylinder and flows downstream along the side wall of the polyethylene fluoride membrane strip. There is a certain distance between the annular inclined plate and the end of the T-ring sleeve close to the polyethylene fluoride membrane strip, so that the liquid column flowing downstream has a certain thickness. The cylindrical liquid seals and surrounds the polyethylene fluoride membrane strip, making it convenient for the polyethylene fluoride membrane strip to extract the liquid flowing downstream along its side wall.

[0011] Specifically, the adsorption mechanism includes an adsorption ring tube, a filter tube, a motor base, a filter pump and a float-type liquid level sensor. The adsorption ring tube is arranged on the inner wall of one end of the liquid storage cylinder close to the filter ring tube, and multiple groups of filter tubes are connected between the adsorption ring tube and the filter ring tube. The motor base is arranged on the inner wall of the liquid storage cylinder below the adsorption ring tube, the filter pump is arranged through the inner wall of the motor base, the liquid suction end of the filter pump is connected to the adsorption ring tube, the float-type liquid level sensor is arranged on the side wall of the liquid tank, and the detection end of the float-type liquid level sensor is arranged through the inside of the liquid tank; the drainage mechanism includes a drain pipe and a drain valve. The drain pipe passes through the liquid tank and is connected to the bottom wall of the liquid storage cylinder, and the drain valve is connected to the end of the drain pipe away from the liquid storage cylinder.

[0012] When in use, the filter pump uses the extraction end to extract the filter tube through the adsorption ring tube, the inside of the filter tube changes to a negative pressure state, the filter tube extracts the polyethylene fluoride membrane strip through the filter ring cylinder, and the polyethylene fluoride membrane strip filters the liquid adhered to its side wall. The impurities in the liquid are filtered by the polyethylene fluoride membrane strip and fall to the bottom of the filtration channel through the discharge end of the filter pump for storage. After filtering the liquid, the discharge valve is opened, the discharge pipe is connected, and the liquid inside the filtration channel is discharged through the discharge pipe.

[0013] Wherein, a controller is provided on the side wall of the liquid tank on one side of the float type liquid level sensor.

[0014] Preferably, the controller is electrically connected to the liquid suction pump, the filter pump and the float type liquid level sensor respectively.

[0015] Furthermore, the model of the controller is SYC89C52RC-401.

[0016] The beneficial effects achieved by adopting the above structure are as follows:

[0017] Compared with the existing technology, this solution adopts a combination of a liquid downstream structure and a covering adsorption structure. Through the provision of an upward liquid supply mechanism, a diversion type covering mechanism and a pressure relief type filtration mechanism, with the coordinated use of the liquid extraction mechanism, the liquid infusion mechanism, the diversion mechanism, the filtration mechanism, the adsorption mechanism and the liquid discharge mechanism, the diversion cavity formed by the annular inclined plate and the T-shaped ring sleeve is used to change the irregularly flowing liquid into a hollow circular ring shape that flows downstream along the outside of the polyethylene fluoride membrane strip. As the liquid falls, the thickness of the liquid gradually decreases. On the one hand, the filtration pressure of the polyethylene fluoride membrane strip can be monitored in real time; on the other hand, the blockage degree of the polyethylene fluoride membrane strip can be monitored in real time, thereby ensuring the filtering effect of the polyethylene fluoride membrane strip on the liquid, thereby efficiently completing the liquid impurity removal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0019] Figure 2 This is the main stereoscopic view of this scheme;

[0020] Figure 3 This is a schematic diagram of the combined structure of the filtering mechanism and the drainage mechanism of this solution;

[0021] Figure 4 Schematic diagram of the structure of the adsorption mechanism of this scheme;

[0022] Figure 5 This is a structural diagram of the liquid box and filtration channel of this scheme;

[0023] Figure 6 This is the main view of this scheme;

[0024] Figure 7 This is a side view of the scheme;

[0025] Figure 8 for Figure 6 AA section view;

[0026] Figure 9 for Figure 8 A magnified structural view of part I;

[0027] Figure 10 for Figure 5 A magnified structural view of Part II;

[0028] Figure 11 for Figure 3 A magnified structural view of part III.

[0029] Among them, 1. liquid box, 2. suction and filtration channel, 3. upward type liquid supply mechanism, 4. liquid extraction mechanism, 5. liquid extraction pump, 6. liquid suction ring tube, 7. liquid extraction port, 8. liquid infusion mechanism, 9. pipe rack, 10. liquid infusion tube, 11. flow-guiding covering mechanism, 12. flow-guiding mechanism, 13. annular inclined plate, 14. T-ring sleeve, 15. lower liquid joint, 16. filtering mechanism, 17. liquid storage cylinder, 18. filter ring cylinder, 19. groove, 20. polyethylene fluoride membrane strip, 21. pressure relief type suction and filtration mechanism, 22. adsorption mechanism, 23. adsorption ring tube, 24. filter tube, 25. motor base, 26. filter pump, 27. discharge mechanism, 28. discharge pipe, 29. discharge valve, 30. controller, 31. float type liquid level sensor, 32. liquid inlet valve.

[0030] The accompanying drawings are used to provide further understanding of the present solution and constitute a part of the specification. Together with the embodiments of the present solution, they are used to explain the present solution and do not constitute a limitation to the present solution. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of this solution will be clearly and completely described below in conjunction with the drawings in the embodiments of this solution. Obviously, the described embodiments are only part of the embodiments of this solution, not all of the embodiments; based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this solution.

[0032] In the description of this solution, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this solution and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on this solution.

[0033] like Figures 1-11 As shown, a polyethylene fluoride membrane filtration device proposed in this scheme includes a liquid tank 1, a suction filter channel 2, a liquid inlet valve 32, an upward liquid supply mechanism 3, a flow-guiding covering mechanism 11 and a pressure-relief suction filter mechanism 21. The suction filter channel 2 is connected to the upper wall of the liquid tank 1, and the suction filter channel 2 is through-set. The liquid inlet valve 32 is connected to one side of the liquid tank 1, the upward liquid supply mechanism 3 is provided on the suction filter channel 2, the flow-guiding covering mechanism 11 is provided at one end of the suction filter channel 2 away from the liquid tank 1, and the pressure-relief suction filter mechanism 21 is provided inside the suction filter channel 2. The upward liquid supply mechanism 3 includes a liquid extraction mechanism 4 and an infusion mechanism 8, the liquid extraction mechanism 4 is arranged on the upper wall of the liquid tank 1, and the infusion mechanism 8 is arranged on the side wall of the suction and filtration channel 2. The flow-guiding covering mechanism 11 includes a flow-guiding mechanism 12 and a filtering mechanism 16, the flow-guiding mechanism 12 is arranged on the upper wall of the suction and filtration channel 2, and the filtering mechanism 16 is arranged on the inner wall of the flow-guiding mechanism 12. The pressure-relief type suction and filtration mechanism 21 includes an adsorption mechanism 22 and a liquid discharge mechanism 27, the adsorption mechanism 22 is arranged on the inner wall of the filtering mechanism 16, and the liquid discharge mechanism 27 is arranged on the bottom side wall of the liquid tank 1.

[0034] The liquid extraction mechanism 4 includes a liquid extraction pump 5, a liquid suction ring tube 6 and a liquid extraction port 7. Multiple groups of the liquid extraction pumps 5 are arranged through the inner wall of the liquid tank 1. The liquid suction ring tube 6 is arranged between the extraction ends of the liquid extraction pump 5 inside the liquid tank 1. Multiple groups of the liquid extraction port 7 are arranged on the side wall of the liquid suction ring tube 6; the infusion mechanism 8 includes a pipe rack 9 and an infusion pipe 10. Multiple groups of the pipe rack 9 are arranged on the side wall of the filtration channel 2. The infusion pipe 10 penetrates the pipe rack 9 and is arranged at the discharge end of the liquid extraction pump 5.

[0035] The diversion mechanism 12 includes an annular inclined plate 13, a T-shaped ring sleeve 14 and a lower liquid joint 15. The annular inclined plate 13 is arranged on the upper wall of the suction filter 2. The outer surface of the annular inclined plate 13 and the outer surface of the suction filter 2 are arranged at an obtuse angle. The T-shaped ring sleeve 14 is arranged on the upper wall of the annular inclined plate 13. Multiple groups of lower liquid joints 15 are arranged through the inner wall of the T-shaped ring sleeve 14. A diversion cavity is formed between the annular inclined plate 13 and the T-shaped ring sleeve 14. The end of the infusion tube 10 away from the liquid pump 5 is connected to the lower liquid joint 15. The filtration The mechanism 16 includes a liquid storage cylinder 17, a filter ring cylinder 18, a groove 19 and a polyethylene fluoride membrane strip 20. The filter ring cylinder 18 is arranged on the inner wall of the T-shaped ring sleeve 14, and the liquid storage cylinder 17 is arranged on the inner wall of the filter ring cylinder 18. The liquid storage cylinder 17 is opened at the upper end. Multiple groups of the grooves 19 are arranged on the side wall of the liquid storage cylinder 17. The grooves 19 are opened at one end. Multiple groups of the polyethylene fluoride membrane strips 20 are arranged between the bottom wall of the filter ring cylinder 18 and the bottom wall of the grooves 19. The polyethylene fluoride membrane strips 20 are connected to the filter ring cylinder 18.

[0036] The adsorption mechanism 22 includes an adsorption ring tube 23, a filter tube 24, a motor base 25, a filter pump 26 and a float-type liquid level sensor 31. The adsorption ring tube 23 is arranged on the inner wall of one end of the liquid storage cylinder 17 close to the filter ring tube 18, and multiple groups of the filter tubes 24 are connected between the adsorption ring tube 23 and the filter ring tube 18. The motor base 25 is arranged on the inner wall of the liquid storage cylinder 17 below the adsorption ring tube 23. The filter pump 26 is arranged through the inner wall of the motor base 25. The liquid extraction end of the filter pump 26 is connected with the adsorption ring tube 23. The float-type liquid level sensor 31 is arranged on the side wall of the liquid tank 1, and the detection end of the float-type liquid level sensor 31 is arranged through the inside of the liquid tank 1; the discharge mechanism 27 includes a discharge pipe 28 and a discharge valve 29. The discharge pipe 28 passes through the liquid tank 1 and is connected to the bottom wall of the liquid storage cylinder 17. The discharge valve 29 is connected to the end of the discharge pipe 28 away from the liquid storage cylinder 17.

[0037] A controller 30 is provided on the side wall of the liquid tank 1 on the side of the float type liquid level sensor 31 .

[0038] The controller 30 is electrically connected to the liquid pump 5 , the filter pump 26 and the float type liquid level sensor 31 respectively.

[0039] The model of the controller 30 is SYC89C52RC-401.

[0040] When in use, an external pipe is connected to the liquid inlet valve 32, the liquid inlet valve 32 is opened, the external pipe is connected to the liquid tank 1, and the liquid to be filtered flows into the liquid tank 1 through the liquid inlet valve 32. The controller 30 controls the float type liquid level sensor 31 to start, and the float type liquid level sensor 31 monitors the liquid level inside the liquid tank 1 through the detection end;

[0041] The controller 30 controls the liquid extraction pump 5 to start, and the liquid extraction pump 5 uses the extraction end to extract the liquid into the infusion tube 10 through the liquid suction ring 6 and the liquid extraction port 7. The liquid in the infusion tube 10 flows into the cavity formed by the annular inclined plate 13 and the T-shaped ring sleeve 14. The annular inclined plate 13 is inclined, and the side of the T-shaped ring sleeve 14 close to the annular inclined plate 13 is in contact with the surface of the polyethylene fluoride membrane strip 20. Under the inclined diversion effect of the annular inclined plate 13, the liquid is drained to the side wall of the polyethylene fluoride membrane strip 20. The liquid is in the shape of a hollow cylinder and flows downstream along the side wall of the polyethylene fluoride membrane strip 20. There is a distance between the annular inclined plate 13 and the end of the T-shaped ring sleeve 14 close to the polyethylene fluoride membrane strip 20, so that the hollow cylinder of liquid flows downstream with a certain thickness. The polyethylene fluoride membrane strip 20 is surrounded by the liquid seal in the shape of a hollow cylinder, which is convenient for the polyethylene fluoride membrane strip 20 to extract the liquid flowing downstream along its side wall;

[0042] The controller 30 controls the filter pump 26 to start. The filter pump 26 uses the extraction end to extract the filter tube 24 through the adsorption ring tube 23. The inside of the filter tube 24 changes to a negative pressure state. The filter tube 24 filters the liquid flowing on the surface of the polyethylene fluoride membrane strip 20 through the filter ring cylinder 18. After being filtered by the polyethylene fluoride membrane strip 20, the liquid falls to the bottom of the liquid storage cylinder 17 through the discharge end of the filter pump 26 for storage. After the liquid is filtered, the discharge valve 29 is opened, the discharge pipe 28 is connected, and the liquid inside the liquid storage cylinder 17 is discharged through the discharge pipe 28.

[0043] The thickness of the hollow cylindrical liquid is the largest when it is at the highest point. As the hollow cylindrical liquid falls, its thickness gradually decreases under the filtration of the polyethylene fluoride membrane strip 20 until it is completely absorbed by the polyethylene fluoride membrane strip 20. The extraction pressure of the filter pump 26 on the polyethylene fluoride membrane strip 20 is pre-adjusted so that the liquid flowing downstream along the polyethylene fluoride membrane strip 20 can be completely absorbed by the polyethylene fluoride membrane strip 20, thereby preventing the unfiltered liquid from flowing back into the liquid tank 1.

[0044] When the extraction pressure of the filter pump 26 on the polyethylene fluoride membrane strip 20 is relatively high, the state of the liquid falling downstream along the polyethylene fluoride membrane strip 20 is observed through the filtration channel 2. When the liquid in the lower half of the polyethylene fluoride membrane strip 20 is cut off or the cut-off length does not meet the operator's requirements, although the polyethylene fluoride membrane strip 20 has an enhanced ability to adsorb liquid on its surface, it will cause the membrane pores of the polyethylene fluoride membrane strip 20 to expand, thereby reducing the polyethylene fluoride membrane strip 20's efficiency in intercepting impurities in the liquid, thereby affecting the quality of the filtered liquid. Therefore, it is necessary to adjust and reduce the extraction pressure of the filter pump 26 on the polyethylene fluoride membrane strip 20 to ensure the filtration effect of the polyethylene fluoride membrane strip 20 on the liquid;

[0045] When the extraction pressure of the filter pump 26 on the polyethylene fluoride membrane strip 20 is small or the surface of the polyethylene fluoride membrane strip 20 is blocked, the amount of liquid penetrating the polyethylene fluoride membrane strip 20 per unit time is reduced, so that the amount of liquid falling into the liquid tank 1 increases. When the float-type liquid level sensor 31 detects that the liquid level inside the liquid tank 1 has risen, in order to avoid the polyethylene fluoride membrane strip 20 affecting the filtering effect of the liquid, the polyethylene fluoride membrane strip 20 is replaced and cleaned, and the operating status of the polyethylene fluoride membrane strip 20 can be monitored in real time to ensure the filtering effect of the liquid; just repeat the above operation when using it next time.

[0046] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0047] The above description of the present solution and its implementation methods is non-limiting. The drawings show only one implementation method of the present solution, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present solution, designs a similar structure and embodiment without creatively designing, they shall fall within the scope of protection of the present solution.

Claims

1. A polyethylene fluoride membrane filtration device, comprising a liquid tank, a suction filtration channel and a liquid inlet valve, characterized in that: It also includes an upward liquid supply mechanism, a flow-guiding covering mechanism, and a pressure-relieving suction and filtration mechanism. The suction and filtration channel is connected to the upper wall of the liquid tank. The suction and filtration channel is through-set, and the liquid inlet valve is connected to one side of the liquid tank. The upward-type liquid supply mechanism includes a liquid extraction mechanism and a liquid infusion mechanism; The liquid extraction mechanism is arranged on the upper wall of the liquid box, and the liquid infusion mechanism is arranged on the side wall of the suction and filtration channel; The diversion type covering mechanism includes a diversion mechanism and a filtering mechanism; The flow guiding mechanism is arranged on the upper wall of the suction and filtration channel, the filtering mechanism is arranged on the inner wall of the flow guiding mechanism, and the pressure relief type suction and filtration mechanism includes an adsorption mechanism and a liquid discharge mechanism; The adsorption mechanism is arranged on the inner wall of the filtering mechanism, and the drainage mechanism is arranged on the bottom side wall of the liquid tank; The flow guide mechanism includes an annular inclined plate, a T-ring sleeve and a lower liquid joint; An annular inclined plate is provided on the upper wall of the suction filtration channel, and an obtuse angle is formed between the outer surface of the annular inclined plate and the outer surface of the suction filtration channel. A T-shaped ring sleeve is provided on the upper wall of the annular inclined plate, and multiple sets of lower liquid joints are provided through the inner wall of the T-shaped ring sleeve. A diversion cavity is formed between the annular inclined plate and the T-shaped ring sleeve. The filtering mechanism includes a liquid storage cylinder, a filtering ring cylinder, a groove and a polyethylene fluoride membrane strip; The filter ring is arranged on the inner wall of the T-shaped ring sleeve, the liquid storage cylinder is arranged on the inner wall of the filter ring, the liquid storage cylinder is open at the upper end, multiple groups of grooves are arranged on the side wall of the liquid storage cylinder, the grooves are open at one end, multiple groups of polyethylene fluoride membrane strips are arranged between the bottom wall of the filter ring and the bottom wall of the grooves, and the polyethylene fluoride membrane strips are connected to the filter ring; The adsorption mechanism includes an adsorption ring tube, a filter tube, a motor base, a filter pump and a float type liquid level sensor; The adsorption ring tube is arranged on the inner wall of one end of the liquid storage cylinder close to the filter ring tube, multiple groups of filter tubes are connected between the adsorption ring tube and the filter ring tube, the motor seat is arranged on the inner wall of the liquid storage cylinder below the adsorption ring tube, the filter pump is arranged through the inner wall of the motor seat, the liquid suction end of the filter pump is connected to the adsorption ring tube, the float type liquid level sensor is arranged on the side wall of the liquid tank, and the detection end of the float type liquid level sensor is arranged through the inside of the liquid tank.

2. A polyethylene fluoride membrane filtration device according to claim 1, characterized in that: The liquid extraction mechanism includes a liquid extraction pump, a liquid suction ring tube and a liquid extraction port. Multiple groups of the liquid extraction pumps are arranged through the inner wall of the liquid box. The liquid suction ring tube is arranged between the extraction ends of the liquid extraction pump inside the liquid box. Multiple groups of the liquid extraction ports are arranged on the side wall of the liquid suction ring tube.

3. A polyethylene fluoride membrane filtration device according to claim 2, characterized in that: The infusion mechanism includes a pipeline rack and an infusion tube. Multiple groups of the pipelines are mounted on the side wall of the filtration channel. The infusion tube runs through the pipeline and is mounted on the discharge end of the liquid pump.

4. A polyethylene fluoride membrane filtration device according to claim 3, characterized in that: One end of the liquid infusion tube away from the liquid pump is connected to the lower liquid joint.

5. The polyethylene fluoride membrane filtration device according to claim 1, characterized in that: The liquid discharge mechanism includes a liquid discharge pipe and a liquid discharge valve. The liquid discharge pipe passes through the liquid tank and is connected to the bottom wall of the liquid storage cylinder. The liquid discharge valve is connected to an end of the liquid discharge pipe away from the liquid storage cylinder.

6. The polyethylene fluoride membrane filtration device according to claim 1, characterized in that: A controller is provided on the side wall of the liquid tank on one side of the float type liquid level sensor.

7. The polyethylene fluoride membrane filtration device according to claim 6, characterized in that: The controller is electrically connected to the liquid pump, the filter pump and the float type liquid level sensor respectively.

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