Integrated membrane separation and filtration device

Abstract

The present invention belongs to the field of filtration technology, and specifically discloses an integrated membrane separation filtration device, including a filter tank, the bottom of the filter tank is fixedly connected to a first bottom plate, the top and bottom of the outer wall of the first bottom plate are respectively fixedly connected to a top plate and a second bottom plate through support columns at four corners, the bottom of the outer wall of the top plate is fixedly connected to a pressure pump through a mounting seat, and the output end of the pressure pump is connected to the top of the outer wall of the filter tank through a pipeline, the inlet end of the pressure pump is inserted and fixedly connected to an external inlet pipe, and the external inlet pipe is connected to an external inlet source. In the present invention, by arranging a filter assembly, the pressure on the filter membrane during the filtration and separation process is made more uniform, the degree of wear is reduced, and the service life is extended. At the same time, the decrease in discharge capacity due to uneven pressure can be avoided, so that the filter membrane can maintain a relatively consistent pressure throughout the process, further extending the service life of the filter membrane.

Description

Technical Field

[0001] The invention belongs to the field of filtration, and specifically discloses an integrated membrane separation and filtration device. Background Art

[0002] Membrane separation technology is a separation technology that uses special membranes to selectively transmit certain components in liquids or gases. It has the characteristics of high efficiency, low energy consumption, no phase change, and environmental friendliness. It is widely used in water treatment, food processing, biomedicine, chemical industry and other fields.

[0003] In membrane separation technology, the permeation of the filtered material from one end of the membrane to the other end is a core step. This process is related to the filtration quality and filtration speed. Therefore, the filtered material is usually placed above the membrane, and the gravitational potential energy is used to accelerate the permeation speed of the filtered material. However, there are still technical problems such as dependence on the volume of the filtered material, which limits the permeation speed. With the continuous advancement of technology, there is already a method in the existing technology to use a pump to stably pressurize the filtered material, which has a relatively stable pressurization effect. However, after the filtered material is pressurized by the pump, it will simultaneously apply pressure to the inner wall of the tank containing the filtered material. This part of the pressure will be rebounded by the inner wall of the tank and fed back to the membrane. Because the pressure is different due to the depth of the tank, the pressure fed back to the membrane is also different. Long-term uneven force will lead to increased membrane wear. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide an integrated membrane separation and filtration device to solve the problem of uneven force on the filtration membrane in the prior art.

[0005] To achieve the above objectives, the present invention provides an integrated membrane separation filtration device, comprising a filter tank, the bottom of the filter tank is fixedly connected to a first bottom plate, the top and bottom of the outer wall of the first bottom plate are respectively fixedly connected to a top plate and a second bottom plate through support columns at four corners, the bottom of the outer wall of the top plate is fixedly connected to a pressure pump through a mounting seat, and the output end of the pressure pump is connected to the top of the outer wall of the filter tank through a pipeline, the inlet end of the pressure pump is inserted and fixedly connected to an external inlet pipe, and the external inlet pipe is connected to an external inlet source, the bottom of the filter tank is fixedly connected to a water diversion cylinder, and the water diversion cylinder is inserted and fixedly connected to the bottom of the first bottom plate, the outer wall of the water diversion cylinder is inserted and fixedly connected to external water outlet pipes evenly distributed and arranged in a circumferential array, a control valve is provided at the connection between the external water outlet pipe and the water diversion cylinder, the external water outlet pipe is connected to an external receiving source, and a filter assembly is provided inside the filter tank, and the filter assembly is used to filter the filtered material.

[0006] The filter assembly includes a connecting cover fixedly connected to the inside of the filter tank, the bottom of the connecting cover is fixedly connected to a support frame, the shape of the support frame is set to be a flat-top cone with a small head and a large bottom, a plurality of liquid holes are opened on the outer wall of the support frame and distributed in layers along the outer wall of the support frame, a mesh cover is provided on the outer wall of the support frame, and a filter membrane is clamped between the mesh cover and the support frame.

[0007] In the above technical solution, preferably, the filter assembly also includes a positioning frame fixedly connected to the bottom of the support frame, and the first water inlet is fixedly connected to the inner wall of the positioning frame through a fixing frame, and the top of the first water inlet is fixedly connected to the second water inlet, and a reduction motor is arranged below the first water inlet, and the reduction motor is fixedly connected to the top of the second bottom plate, and the output end of the reduction motor is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected and extends to the interior of the filter tank after passing through the water distribution cylinder, and a spiral blade is fixedly connected to the outer side wall of the rotating shaft, and the outer wall of the second water inlet is provided with water inlet holes that are evenly distributed and arranged in a circular array.

[0008] In the above technical solution, preferably, the first water inlet and the second water inlet are both configured to be cylindrical, and the length and width of the first water inlet are larger than the length and width of the second water inlet, and the outer wall of the first water inlet is provided with arc-shaped communication holes that are evenly distributed and arranged in a circular array, and the concave direction of the arc-shaped communication holes corresponds to the rotation direction of the rotating shaft.

[0009] In the above technical solution, preferably, the filter tank includes a conical portion and a cylindrical portion that are connected as one from top to bottom, the conical portion is configured as a flat-top cone with a small head and a large bottom, a sealing block is inserted and fixedly connected to the top of the outer wall of the conical portion, and the sealing block is connected to the output end of the pressure pump through a pipeline.

[0010] In the above technical solution, preferably, a rotating ring is sleeved on and rotatably connected to the outer wall of the positioning frame, and the bottom of the outer wall of the rotating ring is inserted into and rotatably connected to the bottom of the inner wall of the cylindrical part, the outer wall of the rotating ring is fixedly connected to stirring blades that are evenly distributed and arranged in a circular array, and the bottom of the inner wall of the rotating ring is fixedly connected to connecting plates that are evenly distributed and arranged in a circular array, and the connecting plates are fixedly connected to the outer wall of the rotating shaft.

[0011] In the above technical solution, preferably, the top and bottom of the inner wall of the conical portion are respectively fixedly connected with a first fixing ring and a second fixing ring, the inner diameter and outer diameter of the second fixing ring are both larger than the inner diameter and outer diameter of the first fixing ring, and adsorption plates that are evenly distributed and arranged in a circular array are fixedly connected between the first fixing ring and the second fixing ring, the connection between the adsorption plate and the first fixing ring and the second fixing ring is staggered, and the outer side wall of the adsorption plate is provided with flow holes that are evenly distributed and arranged in an oblique line.

[0012] In the above technical solution, preferably, the sealing block includes a water storage part, a vortex part and a plug block which are connected as a whole from top to bottom, and the plug block is snap-connected to the top of the inner wall of the cylindrical part, an inlet is provided in the top center of the water storage part, and observation windows which are evenly distributed and arranged in a circular array are provided on the outer wall of the inlet, a fixed shaft is fixedly connected to the bottom of the inner wall of the plug block, and the fixed shaft is inserted into the interior of the vortex part, a spiral plate is fixedly connected to the outer wall of the fixed shaft, and a water outlet is provided at the bottom of the plug block, the water outlet is located between the connecting cover and the first fixing ring, and the water outlet corresponds to the tail end of the spiral plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In the above technical solution, by providing a filter assembly, the pressure on the filter membrane during the filtration and separation process is made more uniform, thereby reducing the degree of wear and tear, thereby extending the service life. At the same time, the decrease in discharge capacity due to uneven pressure can be avoided, so that the filter membrane can maintain a relatively consistent pressure throughout the process, further extending the service life of the filter membrane.

[0015] By setting up structures such as stirring blades and adsorption plates, a vortex is formed in the filter tank, causing the filtered material to continuously flip and flow along the surface of the filter membrane, which in turn drives the material isolated by the isolation membrane to flip and flow synchronously, avoiding the accumulation of isolated materials on the outside of the filter membrane to form blockages. At the same time, the continuous flipping flow can also make the pressure on the surface of the filter membrane more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of the filter tank of the present invention;

[0019] Figure 4 Schematic diagram of the internal structure of the sealing block of the present invention;

[0020] Figure 5 Schematic diagram of the internal structure of the tapered portion of the present invention;

[0021] Figure 6 A top view of the adsorption plate of the present invention;

[0022] Figure 7 This is a schematic diagram of the internal structure of the filter assembly of the present invention;

[0023] Figure 8 It is a schematic diagram of the internal structure of the water separation cylinder of the present invention.

[0024] Figure: 1, first bottom plate; 2, second bottom plate; 3, top plate; 4, filter tank; 5, pressure pump; 6, external inlet pipe; 7, water distribution cylinder; 8, reduction motor; 9, external outlet pipe; 10, sealing block; 11, filter assembly; 12, conical portion; 13, cylindrical portion; 14, water storage portion; 15, inlet port; 16, observation window; 17, fixed shaft; 18, swirl portion; 19, spiral plate; 20, plug; 21, water outlet 22. Connecting cover; 23. First fixing ring; 24. Second fixing ring; 25. Flow hole; 26. Adsorption plate; 27. Filter membrane; 28. Liquid hole; 29. Mesh cover; 30. Support frame; 31. Positioning frame; 32. Rotating ring; 33. Stirring blade; 34. Connecting plate; 35. First water inlet; 36. Second water inlet; 37. Arc-shaped exchange hole; 38. Rotating shaft; 39. Spiral blade; 40. Control valve. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] like Figures 1-8The integrated membrane separation filtration device shown includes a filter tank 4, the bottom of the filter tank 4 is fixedly connected to a first bottom plate 1, the top and bottom of the outer wall of the first bottom plate 1 are respectively fixedly connected to a top plate 3 and a second bottom plate 2 through support columns at the four corners, the bottom of the outer wall of the top plate 3 is fixedly connected to a pressure pump 5 through a mounting seat, and the output end of the pressure pump 5 is connected to the top of the outer wall of the filter tank 4 through a pipeline, the inlet end of the pressure pump 5 is inserted and fixedly connected to an external inlet pipe 6, and the external inlet pipe 6 is connected to an external inlet source, the bottom of the filter tank 4 is fixedly connected to a water distribution cylinder 7, and the water distribution cylinder 7 is inserted and fixedly connected to the bottom of the first bottom plate 1, the outer wall of the water distribution cylinder 7 is inserted and fixedly connected to external water outlet pipes 9 evenly distributed and arranged in a circular array, a control valve 40 is provided at the connection between the external water outlet pipe 9 and the water distribution cylinder 7, and the external water outlet pipe 9 is connected to an external receiving source, and a filter component 11 is provided inside the filter tank 4, and the filter component 11 is used to filter the filtered object.

[0028] The filtered material enters the interior of the pressure pump 5 through the external inlet pipe 6 in the external inlet source, and after being pressurized by the pressure pump 5, enters the interior of the filter tank 4 through the pipeline, and then enters the interior of the water distribution cylinder 7 after being filtered and separated by the filter component 11 inside the filter tank 4. At this time, the user can open or close the corresponding external water outlet pipe 9 by controlling the control valve 40, and then the filtered liquid flows into the external receiving source through the external water outlet pipe 9.

[0029] The filter assembly 11 includes a connecting cover 22 fixedly connected to the inside of the filter tank 4, and a support frame 30 is fixedly connected to the bottom of the connecting cover 22. The shape of the support frame 30 is set to be a flat-top cone with a small head and a large bottom. A plurality of liquid holes 28 are opened on the outer wall of the support frame 30 and distributed in layers along the outer wall of the support frame 30. A mesh cover 29 is provided on the outer wall of the support frame 30, and a filter membrane 27 is clamped between the mesh cover 29 and the support frame 30.

[0030] By setting the mesh cover 29, the outside of the filter membrane 27 can be effectively protected and the impact of the water flow can be alleviated. The support frame 30 is made of a hard material, which has a good supporting and shaping effect on the filter membrane 27 and the liquid hole 28 to prevent them from deformation. By setting the shape of the support frame 30 to a flat-top cone with a small head and a large bottom, the corresponding mesh cover 29 and the filter membrane 27 made of a flexible and stretchable material are also flat-top cones with a small head and a large bottom. The contact area between them and the filtered object increases synchronously with the increase of depth, and the corresponding continuously increasing contact area has better adaptability to the continuously increasing pressure.

[0031] The filter assembly 11 also includes a positioning frame 31 fixedly connected to the bottom of the support frame 30, and a first water inlet 35 is fixedly connected to the inner wall of the positioning frame 31 through a fixing frame, and the top of the first water inlet 35 is fixedly connected to the second water inlet 36. A reduction motor 8 is provided below the first water inlet 35, and the reduction motor 8 is fixedly connected to the top of the second base plate 2. The output end of the reduction motor 8 is fixedly connected to a rotating shaft 38, and the rotating shaft 38 is rotatably connected and extends through the water distribution cylinder 7 to the interior of the filter tank 4. A spiral blade 39 is fixedly connected to the outer wall of the rotating shaft 38, and the outer wall of the second water inlet 36 is provided with water inlet holes that are evenly distributed and arranged in a circular array.

[0032] In the initial state, the filtered matter penetrates the inner side of the filter membrane 27 and then enters the interior of the water distribution cylinder 7 through the cylindrical portion 13, and is then discharged to the external receiving source through the external outlet pipe 9. During the process, the pressure pump 5 mainly applies pressure to promote the filtered matter to penetrate to the other side of the filter membrane 27. Due to the influence of depth, the pressure at the bottom is greater, so more filtered matter can penetrate than at the top, and a blockage is formed so that the filtered matter at the top cannot pass into the bottom. Therefore, the two form a mutual blockage. After the convection is fed back to the outside of the filter membrane 27, a stronger pressure is required to ensure the penetration efficiency, which further accelerates the consumption of the filter membrane 27. After the reduction motor 8 is energized, the rotating shaft 38 and the spiral blade 39 are driven to rotate synchronously. The rotation of the two forms a vortex inside the support frame 30 and accelerates the filtered matter to move inward and downward, so that the flow speed of the filtered matter inside the filter membrane 27 is accelerated, thereby forming a blocking effect on the filtered matter above.

[0033] The first water inlet portion 35 and the second water inlet portion 36 are both cylindrical, and the length and width of the first water inlet portion 35 are greater than the length and width of the second water inlet portion 36. The outer wall of the first water inlet portion 35 is provided with arc-shaped communication holes 37 evenly distributed and arranged in a circular array, and the concave direction of the arc-shaped communication holes 37 corresponds to the rotation direction of the rotating shaft 38.

[0034] Under the guidance of the vortex, the filtered material enters the interior of the first water inlet part 35 through the arc-shaped exchange hole 37. Since the interior of the first water inlet part 35 is a relatively closed and circular space, a pumping effect can be formed to pump the filtered material downward. At the same time, the arc-shaped exchange hole 37 is set to fit the direction of the vortex, reducing the obstruction to the vortex and thus reducing the damage to the vortex. By setting the filter assembly 11, the pressure on the filter membrane 27 during the filtration and separation process is made more uniform, reducing the degree of wear and tear, thereby extending the service life. At the same time, the decrease in discharge capacity due to uneven pressure can be avoided, so that the filter membrane 27 can maintain a relatively consistent pressure throughout the process, further extending the service life of the filter membrane 27.

[0035] The filter tank 4 includes a conical portion 12 and a cylindrical portion 13 which are connected as one from top to bottom. The conical portion 12 is configured as a flat-top cone with a small head and a large bottom. A sealing block 10 is inserted and fixedly connected to the top of the outer wall of the conical portion 12, and the sealing block 10 is connected to the output end of the pressure pump 5 through a pipeline.

[0036] Through this design, the shape of the filter assembly 11 can be adapted to ensure pressure stability.

[0037] A rotating ring 32 is sleeved on the outer wall of the positioning frame 31 and rotatably connected, and the bottom of the outer wall of the rotating ring 32 is inserted into and rotatably connected to the bottom of the inner wall of the cylindrical part 13, the outer wall of the rotating ring 32 is fixedly connected to stirring blades 33 that are evenly distributed and arranged in a circular array, and the bottom of the inner wall of the rotating ring 32 is fixedly connected to connecting plates 34 that are evenly distributed and arranged in a circular array, and the connecting plates 34 are fixedly connected to the outer wall of the rotating shaft 38.

[0038] During the process, since the filtered matter does not flow and remains in a relatively stable state for a long time, the matter isolated outside the filter membrane 27 will adhere to the surface of the filter membrane 27 during continuous accumulation, thereby forming a blockage and eventually weakening the filtering ability of the filter membrane 27. During the rotation of the rotating shaft 38, through the connection of the connecting plate 34, the rotating ring 32 is synchronously driven to rotate outside the positioning frame 31, and the stirring blade 33 is correspondingly driven to rotate, stirring the filtered matter located outside the filter membrane 27 inside the conical portion 12 and forming a vortex. Since the filtered matter is constantly turning and flowing, it can avoid clogging the outside of the filter membrane 27. At the same time, the continuous turning and flowing of the filtered matter along the filter membrane 27 can also make the pressure on the surface of the filter membrane 27 more uniform.

[0039] The top and bottom of the inner wall of the conical portion 12 are respectively fixedly connected with a first fixing ring 23 and a second fixing ring 24. The inner diameter and outer diameter of the second fixing ring 24 are both larger than the inner diameter and outer diameter of the first fixing ring 23. Adsorption plates 26 that are evenly distributed and arranged in a circular array are fixedly connected between the first fixing ring 23 and the second fixing ring 24. The connection between the adsorption plate 26 and the first fixing ring 23 and the second fixing ring 24 is staggered. The outer wall of the adsorption plate 26 is provided with flow holes 25 that are evenly distributed and arranged in an oblique line.

[0040] When a vortex is formed inside the conical portion 12, the filtered material continuously turns and flows, and accordingly, the substances blocked on the outside of the filter membrane 27 also flow together. At this time, these substances are adsorbed into the adsorption plate 26 after contacting it, thereby reducing the content of such substances in the filtered material and further reducing the filtration pressure of the filter membrane 27. By providing a flow hole 25 for the filtered material to pass through, the obstruction to the vortex can be reduced.

[0041] The sealing block 10 includes a water storage portion 14, a swirl portion 18 and a plug 20 which are connected as a whole from top to bottom, and the plug 20 is snap-connected to the top of the inner wall of the cylindrical portion 13. An inlet 15 is provided at the top center of the water storage portion 14, and observation windows 16 are evenly distributed and arranged in a circular array on the outer wall of the inlet 15. A fixed shaft 17 is fixedly connected to the bottom of the inner wall of the plug 20, and the fixed shaft 17 is inserted into the interior of the swirl portion 18. A spiral plate 19 is fixedly connected to the outer wall of the fixed shaft 17. A water outlet 21 is provided at the bottom of the plug 20, and the water outlet 21 is located between the connecting cover 22 and the first fixing ring 23, and the water outlet 21 corresponds to the tail end of the spiral plate 19.

[0042] After the filtered material enters the interior of the sealing block 10 through the inlet 15, it passes through the water storage part 14 and enters the interior of the vortex part 18 and flows downward along the spiral plate 19, and finally enters the interior of the cylindrical part 13 through the water outlet 21, cooperating with the vortex formed inside the cylindrical part 13 to prevent convection with the vortex to block its flow. When the filtered material accumulates to a certain extent and fills the interior of the water storage part 14, the user can observe its situation through the observation window 16, and can judge whether it is necessary to increase the pressure by the pressure pump 5 according to the degree of filling inside.

[0043] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the invention as claimed.

Claims

1. An integrated membrane separation and filtration device, comprising a filter tank, characterized in that: The bottom of the filter tank is fixedly connected to a first bottom plate, and the top and bottom of the outer wall of the first bottom plate are respectively fixedly connected to a top plate and a second bottom plate through support columns at four corners, the bottom of the outer wall of the top plate is fixedly connected to a pressure pump through a mounting seat, and the output end of the pressure pump is connected to the top of the outer wall of the filter tank through a pipeline, the inlet end of the pressure pump is inserted and fixedly connected with an external inlet pipe, and the external inlet pipe is connected to an external inlet source, the bottom of the filter tank is fixedly connected with a water diversion cylinder, and the water diversion cylinder is inserted and fixedly connected to the bottom of the first bottom plate, the outer wall of the water diversion cylinder is inserted and fixedly connected with external water outlet pipes evenly distributed and arranged in a circumferential array, a control valve is provided at the connection between the external water outlet pipe and the water diversion cylinder, the external water outlet pipe is connected to an external receiving source, and a filter assembly is provided inside the filter tank; The filter assembly is used to filter the filtered object; The filter assembly includes a connecting cover fixedly connected to the inside of the filter tank, the bottom of the connecting cover is fixedly connected to a support frame, the shape of the support frame is set to be a flat-top cone with a small top and a large bottom, a plurality of liquid holes are opened on the outer wall of the support frame and distributed layer by layer along the outer wall of the support frame, a mesh cover is sleeved on the outer wall of the support frame, and a filter membrane is clamped between the mesh cover and the support frame; The filter assembly also includes a positioning frame fixedly connected to the bottom of the support frame, a first water inlet is fixedly connected to the inner wall of the positioning frame through a fixing frame, the top of the first water inlet is fixedly connected to the second water inlet, a reduction motor is provided below the first water inlet, and the reduction motor is fixedly connected to the top of the second bottom plate, the output end of the reduction motor is fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected and passes through the water separation cylinder and then extends to the interior of the filter tank, a spiral blade is fixedly connected to the outer side wall of the rotating shaft, and the outer wall of the second water inlet is provided with water inlet holes evenly distributed and arranged in a circumferential array; The first water inlet portion and the second water inlet portion are both cylindrical, and the length and width of the first water inlet portion are greater than the length and width of the second water inlet portion. The outer wall of the first water inlet portion is provided with arc-shaped communication holes evenly distributed and arranged in a circumferential array, and the concave direction of the arc-shaped communication holes corresponds to the rotation direction of the rotating shaft; The filter tank includes a conical portion and a cylindrical portion that are connected as one from top to bottom. The conical portion is configured as a flat-top cone with a small head and a large bottom. A sealing block is inserted and fixedly connected to the top of the outer wall of the conical portion, and the sealing block is connected to the output end of the pressure pump through a pipeline.

2. The integrated membrane separation and filtration device according to claim 1, characterized in that: A rotating ring is sleeved on and rotatably connected to the outer wall of the positioning frame, and the bottom of the outer wall of the rotating ring is inserted into and rotatably connected to the bottom of the inner wall of the cylindrical part, the outer wall of the rotating ring is fixedly connected to stirring blades that are evenly distributed and arranged in a circular array, and the bottom of the inner wall of the rotating ring is fixedly connected to connecting plates that are evenly distributed and arranged in a circular array, and the connecting plates are fixedly connected to the outer wall of the rotating shaft.

3. The integrated membrane separation and filtration device according to claim 1, characterized in that: The top and bottom of the inner wall of the conical portion are respectively fixedly connected with a first fixing ring and a second fixing ring, the inner diameter and outer diameter of the second fixing ring are both larger than the inner diameter and outer diameter of the first fixing ring, and adsorption plates that are evenly distributed and arranged in a circular array are fixedly connected between the first fixing ring and the second fixing ring. The connection between the adsorption plate and the first fixing ring and the second fixing ring is staggered, and the outer side wall of the adsorption plate is provided with flow holes that are evenly distributed and arranged in an oblique line.

4. The integrated membrane separation and filtration device according to claim 3, characterized in that: The sealing block includes a water storage part, a vortex part and a plug block which are connected as a whole from top to bottom, and the plug block is snap-connected to the top of the inner wall of the cylindrical part. An inlet is provided at the top center of the water storage part, and observation windows which are evenly distributed and arranged in a circular array are provided on the outer wall of the inlet. A fixed shaft is fixedly connected to the bottom of the inner wall of the plug block, and the fixed shaft is inserted into the interior of the vortex part. A spiral plate is fixedly connected to the outer wall of the fixed shaft. A water outlet is provided at the bottom of the plug block, and the water outlet is located between the connecting cover and the first fixing ring, and the water outlet corresponds to the tail end of the spiral plate.

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