Convenient-to-clean mechanical filter for wastewater treatment

Abstract

The invention relates to the field of wastewater treatment, in particular to a convenient-to-clean mechanical filter for wastewater treatment, which comprises a pipe body, two ends of the pipe body are respectively connected with a water inlet and a water outlet, the upper end of the pipe body is fixedly provided with an end cover, the end cover is fixedly provided with a driving motor, and the bottom of the pipe body is assembled and connected with a filtering tank body; a bottom valve is assembled and connected to the bottom of the filtering tank body, a filtering net sleeve is arranged in the filtering tank body, the top end of the filtering net sleeve is fixedly connected with the pipe body, a mandrel assembly is coaxially arranged in the filtering net sleeve, the output end of the driving motor is connected with the mandrel assembly, a sweeping and scraping assembly is arranged in the bottom valve, and a clutch sleeve is arranged at the bottom of the mandrel assembly. A bottom plate is fixedly arranged in the bottom valve, a fixing screw sleeve is arranged in the center of the bottom plate, and a control bolt is rotationally installed in the fixing screw sleeve in a threaded mode. The filtering clear water outlet and the cleaning wastewater outlet can be independently separated, and pollution interference caused by the same drainage port in the drainage process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, in particular to a mechanical filter for wastewater treatment that is easy to clean. Background Art

[0002] Mechanical filters, also known as pressure filters, are an essential component of pure water pretreatment and purification systems. They are made of rubber-lined steel or stainless steel. Depending on the filter medium, they are categorized as natural quartz sand filters, multi-media filters, activated carbon filters, and manganese sand filters. Based on the water inlet method, they can be divided into single-flow filters and dual-flow filters. Depending on the actual situation, they can be used in combination or individually.

[0003] The Chinese patent application number CN216726053U provides a filter device for wastewater treatment, comprising a filter tank body, a shaft connector provided on the top of a top cover, a first drive motor provided on the top of the shaft connector, a water inlet and a water outlet provided on one side of the outer periphery of the filter tank body, a gear box provided on the other side of the outer periphery of the filter tank body, a second drive motor provided on the top of the gear box, a baffle provided between a primary filter chamber and a secondary filter chamber, a coarse filter screen connected to the interior of the primary filter chamber, a fine filter screen connected to the interior of the secondary filter chamber, a scraper barrel sleeved on the outer periphery of the coarse filter screen, and a scraper rod provided inside the fine filter screen. During use, the filter has only one water outlet on one side of the filter tank body. When the filter tank body is being scraped and flushed, dirt and impurities contained in the flushing wastewater are likely to remain at the water outlet. When performing normal filtering, the remaining dirt is likely to be mixed into the filtered clean water, seriously affecting the water quality of the next filtration. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical filter for wastewater treatment that is easy to clean, aiming to solve the above technical problems.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] The filter cloth is connected with the filter cloth at the bottom of the filter cloth, and the filter cloth is connected with the filter cloth at the bottom of the filter cloth, and the filter cloth is connected with the filter cloth at the bottom of the filter cloth.

[0007] As a further solution of the present invention: the core shaft assembly includes a driving shaft coaxially arranged with the filter sleeve, the output end of the driving motor is connected to the driving shaft, the outer side of the driving shaft is sleeved with an outer shaft sleeve, and the outer wall of the outer shaft sleeve is evenly circumferentially provided with an absorption filter element, the outer shaft sleeve is rotatably matched with the bottom of the filter sleeve, the bottom of the driving shaft is sleeved with a driving gear, and the bottom of the outer shaft sleeve is sleeved with a rotating gear.

[0008] As a further solution of the present invention: an annular protrusion is provided on the outer wall of the drive shaft, an annular groove is provided on the inner wall of the outer sleeve, and the annular protrusion is adapted to be rotatably installed in the annular groove.

[0009] As a further solution of the present invention: the scraping assembly includes a turntable, which is rotatably matched with the bottom valve, and scraping plates are evenly arranged on the upper end of the turntable. The two sides of the scraping plates are respectively abutted against the inner wall of the filter tank and the outer wall of the filter mesh sleeve. A sealing rotating seat is provided on the upper end of the scraping plate, and the bottom end of the filter mesh sleeve is rotatably matched with the sealing rotating seat. An extension sleeve is provided in the center of the turntable, and a scraping tooth groove is provided on the inner wall of the extension sleeve. A water outlet hole is provided through the turntable.

[0010] As a further solution of the present invention: the clutch sleeve is coaxially arranged in the extension sleeve, the inner wall of the clutch sleeve is provided with a driving tooth groove and a rotating tooth groove, the outer wall of the clutch sleeve is provided with a sweeping gear, the driving gear is always engaged with the driving tooth groove, the rotating gear corresponds to the rotating tooth groove, and the sweeping gear corresponds to the sweeping tooth groove.

[0011] As a further solution of the present invention: the distance between the rotating gear and the sweeping tooth groove is greater than the distance between the rotating tooth groove and the sweeping gear.

[0012] As a further solution of the present invention: the valve plate is arranged against the bottom of the base plate, a first drainage hole is provided through the base plate, a second drainage hole is provided through the valve plate, and the arrangement of the first drainage hole and the second drainage hole is the same.

[0013] As a further solution of the present invention: the water inlet is connected to the filter tank body, a water pumping hole is provided through the tube body, and the water outlet is connected to the inside of the filter tank body through the water pumping hole.

[0014] Beneficial effects of the present invention:

[0015] (1) By setting up the pipe body, filter tank body, filter mesh sleeve and bottom valve, the filter mesh sleeve can separate the filter tank body into two inner and outer chambers. The water inlet is connected to the outer chamber, and the water outlet is connected to the inner chamber. At the same time, the bottom of the filter tank body is connected to the bottom valve. When the wastewater is filtered, the filtered clean water will be drawn out through the water outlet. When the tank is flushed and cleaned, the flushed waste water will be discharged from the bottom valve, so that the filtered clean water and the flushing waste water can be discharged from different outlets respectively, avoiding pollution interference caused by the same drainage outlet during the drainage process.

[0016] (2) By setting a clutch sleeve, when rotary filtration is required, the control bolt is turned to push the clutch sleeve upward until the rotating tooth groove is engaged with the rotating gear. At this time, the sweeping gear is disengaged from the sweeping tooth groove, and the drive shaft will drive the outer shaft sleeve to rotate synchronously through the clutch sleeve to drive the absorption filter element to adsorb and filter the water body. When flushing and cleaning is required, the control bolt is turned in the opposite direction to pull the clutch sleeve downward until the sweeping gear is engaged with the sweeping tooth groove. At this time, the rotating tooth groove is disengaged from the rotating gear. The drive shaft will drive the turntable to rotate synchronously through the clutch sleeve to drive the scraper plate to sweep and clean, so that the different clutch states of the clutch sleeve can be used to realize flexible switching between filtering action and cleaning action.

[0017] (3) By setting up a sweeping and scraping assembly, when the filter is internally flushed and cleaned, the drive shaft will drive the turntable to rotate in the bottom valve, and the turntable will drive the scraping and brushing plate to rotate and scrape the residual dirt on the inner wall of the filter tank and the outer wall of the filter mesh sleeve, ensuring the sweeping and cleaning efficiency. At the same time, flushing with clean water will be carried out, and the flushing wastewater will be discharged directly from the water outlet through the bottom of the bottom valve. When the volume of residual impurities is large, the bottom valve can also be removed and the impurities can be cleaned directly from the filter tank body. The flushing and cleaning process is simple and efficient, which is conducive to improving the quality of wastewater filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural explosion diagram of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0022] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 5 It is a structural schematic diagram of the core shaft assembly in the present invention.

[0024] Figure 6 yes Figure 5 A magnified schematic diagram of the structure at point B.

[0025] Figure 7 It is a structural schematic diagram of the sweeping and scraping assembly in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the clutch sleeve in the present invention.

[0027] In the figure: 1. pipe body; 101. water inlet; 102. water outlet; 103. water pumping hole; 2. end cover; 201. drive motor; 3. filter tank body; 4. bottom valve; 401. bottom plate; 402. first drain hole; 5. core shaft assembly; 501. drive shaft; 5011. annular protrusion; 502. outer shaft sleeve; 5021. annular groove; 503. absorption filter element; 504. drive gear; 505. rotating gear; 6. filter mesh sleeve; 7. scraping assembly; 701. turntable; 702. scraping plate; 703. sealing rotating seat; 704. extension sleeve; 705. scraping tooth groove; 706. water outlet; 8. clutch sleeve; 801. drive tooth groove; 802. rotating tooth groove; 803. scraping gear; 9. valve plate; 901. second drain hole; 10. control bolt; 11. fixing screw sleeve. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 4As shown, the present invention is a mechanical filter for wastewater treatment that is easy to clean, comprising a pipe body 1, with a water inlet 101 and a water outlet 102 connected to both ends of the pipe body 1, an end cap 2 fixedly provided on the upper end of the pipe body 1, a drive motor 201 fixedly installed on the end cap 2, a filter tank body 3 assembled and connected at the bottom of the pipe body 1, a bottom valve 4 assembled and connected at the bottom of the filter tank body 3, a filter mesh sleeve 6 arranged inside the filter tank body 3, the top of the filter mesh sleeve 6 is fixedly connected to the pipe body 1, a core shaft assembly 5 is coaxially arranged inside the filter mesh sleeve 6, and a drive motor The output end 201 is connected to the core shaft assembly 5, a sweeping assembly 7 is provided inside the bottom valve 4, a clutch sleeve 8 is provided at the bottom of the core shaft assembly 5, a bottom plate 401 is fixedly provided inside the bottom valve 4, a fixed screw sleeve 11 is provided in the center of the bottom plate 401, a control bolt 10 is rotatably installed on the inner thread of the fixed screw sleeve 11, the top of the control bolt 10 is rotatably matched with the bottom of the clutch sleeve 8, and the control bolt 10 realizes the clutch switching between the filtering action and the cleaning action through the clutch sleeve 8, and a valve plate 9 for controlling the discharge of flushing waste water is rotatably installed on the outside of the clutch sleeve 8.

[0030] Specifically, by setting the pipe body 1, the filter tank body 3, the filter mesh sleeve 6 and the bottom valve 4, the filter mesh sleeve 6 can separate the filter tank body 3 into two inner and outer chambers, the water inlet 101 is connected to the outer chamber, and the water outlet 102 is connected to the inner chamber. At the same time, the bottom of the filter tank body 3 is connected to the bottom valve 4. When the wastewater is filtered, the wastewater enters the filter tank body 3 from the water inlet 101, and the clutch sleeve 8 is controlled by the control bolt 10 to cooperate with the core shaft assembly 5. At this time, the drive motor 201 will drive the core shaft assembly 5 to rotate, and the wastewater passes through the filter mesh sleeve 6. After preliminary filtration, the water enters the filter mesh sleeve 6 for secondary filtration. The filtered clean water will be pumped out through the water outlet 102. When flushing and cleaning the tank, the control bolt 10 is used to control the clutch sleeve 8 to cooperate with the scraping assembly 7. At this time, the drive motor 201 will drive the scraping assembly 7 to scrape and clean the filter mesh sleeve 6 and the filter tank body 3. At the same time, the waste water after flushing will be discharged from the bottom valve 4 at the bottom, so that the filtered clean water outlet and the cleaning waste water outlet can be independently separated to avoid pollution interference caused by the same drain outlet during the drainage process.

[0031] like Figure 5 As shown, the core shaft assembly 5 includes a drive shaft 501 coaxially arranged with the filter mesh sleeve 6, the output end of the drive motor 201 is connected to the drive shaft 501, an outer sleeve 502 is sleeved on the outer side of the drive shaft 501, and an absorption filter element 503 is evenly arranged on the outer wall of the outer sleeve 502. The outer sleeve 502 rotates with the bottom of the filter mesh sleeve 6, a drive gear 504 is sleeved on the bottom of the drive shaft 501, and a rotating gear 505 is sleeved on the bottom of the outer sleeve 502.

[0032] like Figure 6As shown, an annular protrusion 5011 is provided on the outer wall of the driving shaft 501 , and an annular groove 5021 is provided on the inner wall of the outer sleeve 502 . The annular protrusion 5011 is adapted to be rotatably installed in the annular groove 5021 .

[0033] Specifically, by setting the core shaft assembly 5, due to the rotational cooperation between the annular protrusion 5011 and the annular groove 5021, the outer sleeve 502 is subject to axial movement constraints relative to the drive shaft 501, that is, the outer sleeve 502 can only rotate around the axis of the drive shaft 501. When the clutch sleeve 8 cooperates with the core shaft assembly 5, the drive shaft 501 will drive the outer sleeve 502 to rotate synchronously, so that the absorption filter element 503 continuously rotates in the filter mesh sleeve 6 and continuously absorbs suspended particles in the filtered water body to achieve further filtration of the water body, thereby ensuring the filtration treatment effect of the wastewater.

[0034] like Figure 7 As shown, the scraping assembly 7 includes a turntable 701, which rotates with the bottom valve 4. A scraping plate 702 is evenly arranged on the upper end of the turntable 701. The two sides of the scraping plate 702 are respectively abutted against the inner wall of the filter tank body 3 and the outer wall of the filter mesh sleeve 6. A sealing rotating seat 703 is provided on the upper end of the scraping plate 702, and the bottom end of the filter mesh sleeve 6 rotates with the sealing rotating seat 703. An extension sleeve 704 is provided in the center of the turntable 701, and a scraping tooth groove 705 is provided on the inner wall of the extension sleeve 704. A water outlet hole 706 is provided through the turntable 701.

[0035] Specifically, by setting up the sweeping assembly 7, when the filter is internally flushed and cleaned, the flushing water source enters from the water inlet 101, and the clutch sleeve 8 cooperates with the sweeping assembly 7. At this time, the drive shaft 501 will drive the turntable 701 to rotate in the bottom valve 4, and the turntable 701 will drive the scraper plate 702 to rotate and sweep the residual filtered dirt on the inner wall of the filter tank body 3 and the outer wall of the filter mesh sleeve 6. The flushing waste water will be discharged directly from the water outlet 706 through the bottom of the bottom valve 4. When the volume of the residual impurities is large, the bottom valve 4 can also be removed to clean the impurities directly from the bottom of the filter tank body 3.

[0036] It should be noted that the sealing rotating seat 703 always rotates in conjunction with the bottom of the filter mesh sleeve 6, so that under the premise of ensuring that the turntable 701 can rotate normally, impurities filtered by the filter mesh sleeve 6 will not penetrate into the interior of the filter mesh sleeve 6.

[0037] like Figure 8 As shown, the clutch sleeve 8 is coaxially arranged in the extension sleeve 704, and a driving tooth groove 801 and a rotating tooth groove 802 are provided on the inner wall of the clutch sleeve 8, and a sweeping gear 803 is provided on the outer wall of the clutch sleeve 8. The driving gear 504 is always engaged with the driving tooth groove 801, the rotating gear 505 corresponds to the rotating tooth groove 802, and the sweeping gear 803 corresponds to the sweeping tooth groove 705.

[0038] Furthermore, the distance between the rotating gear 505 and the sweeping tooth groove 705 is greater than the distance between the rotating tooth groove 802 and the sweeping gear 803 .

[0039] Specifically, by setting the clutch sleeve 8, when rotary filtration is required, the control bolt 10 is rotated to push the clutch sleeve 8 to move upward until the rotating tooth groove 802 is engaged with the rotating gear 505. At this time, the sweeping gear 803 is disengaged from the sweeping tooth groove 705, and the drive shaft 501 will drive the outer shaft sleeve 502 to rotate synchronously through the clutch sleeve 8 to drive the absorption filter element 503 to adsorb and filter the water body. When flushing and cleaning is required, the control bolt 10 is rotated in the opposite direction to pull the clutch sleeve 8 to move downward until the sweeping gear 803 is engaged with the sweeping tooth groove 705. At this time, the rotating tooth groove 802 is disengaged from the rotating gear 505, and the drive shaft 501 will drive the turntable 701 to rotate synchronously through the clutch sleeve 8 to drive the scraping plate 702 to sweep and clean, so that the different clutch states of the clutch sleeve 8 can be used to realize flexible switching between filtering action and cleaning action.

[0040] It should be noted that the driving tooth groove 801 in this embodiment has a certain height, so that no matter whether the clutch sleeve 8 moves upward or downward, the driving gear 504 always remains engaged with the driving tooth groove 801.

[0041] like Figure 7 and Figure 8 As shown, the valve plate 9 is arranged against the bottom of the bottom plate 401, the bottom plate 401 is penetrated by a first drainage hole 402, and the valve plate 9 is penetrated by a second drainage hole 901, and the arrangement of the first drainage hole 402 and the second drainage hole 901 is the same.

[0042] like Figure 3 As shown, the water inlet 101 is connected to the filter tank body 3, a water pumping hole 103 is provided through the tube body 1, and the water outlet 102 is connected to the inside of the filter tank body 3 through the water pumping hole 103.

[0043] Specifically, during normal rotation filtration, the valve plate 9 is rotated so that the first drain hole 402 and the second drain hole 901 are arranged alternately. At this time, the valve plate 9 will close the first drain hole 402 to prevent water leakage during the filtration process, so that the water pump (not shown in the figure) at the water outlet 102 can pump out the filtered clean water from the pumping hole 103; and during flushing and cleaning, the valve plate 9 is rotated so that the first drain hole 402 and the second drain hole 901 are arranged to overlap with each other. At this time, the first drain hole 402 is opened, and the flushing waste water will be directly discharged from the bottom of the bottom valve 4 through the first drain hole 402, thereby preventing the flushing waste water from contaminating the drainage channel of the filtered clean water.

[0044] The working principle of the present invention is as follows: Figures 1-8 As shown, in use, the filter net cover 6 separates the filter tank 3 into two chambers, the water inlet 101 is connected to the outer chamber, the water outlet 102 is connected to the inner chamber, and the bottom of the filter tank 3 is connected to the bottom valve 4. When the wastewater is filtered, the wastewater enters the filter tank 3 from the water inlet 101. The control bolt 10 is rotated to push the clutch cover 8 upwards until the rotating tooth groove 802 engages with the rotating gear 505. At this time, the scraping gear 803 is disengaged from the scraping tooth groove 705. The drive shaft 501 drives the outer shaft sleeve 502 to rotate synchronously through the clutch cover 8. The wastewater is preliminarily filtered by the filter net cover 6 and then secondarily filtered by the absorption filter core 503. The filtered clean water is drawn out through the water outlet 102. When the tank is cleaned, the control bolt 10 is rotated in the opposite direction to pull the clutch cover 8 downwards until the scraping gear 803 engages with the scraping tooth groove 705. At this time, the rotating tooth groove 802 is disengaged from the rotating gear 505. The drive shaft 501 drives the rotating disc 701 to rotate synchronously through the clutch cover 8 to drive the scraping plate 702 to scrape and clean. At the same time, the cleaned wastewater is discharged from the bottom valve 4. Thus, the filtered clean water outlet and the cleaned wastewater outlet can be independently separated to avoid pollution and interference during the drainage process.

[0045] The above describes one embodiment of the present application in detail, but the above description is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made according to the scope of the present application should still belong to the scope of the present application.

Claims

1. A mechanical filter for wastewater treatment that is easy to clean, comprising a pipe body (1), wherein both ends of the pipe body (1) are respectively connected to a water inlet (101) and a water outlet (102), characterized in that: The upper end of the tube body (1) is fixedly provided with an end cap (2), and a driving motor (201) is fixedly installed on the end cap (2). The bottom of the tube body (1) is assembled and connected with a filter tank body (3), and the bottom of the filter tank body (3) is assembled and connected with a bottom valve (4). A filter mesh sleeve (6) is provided inside the filter tank body (3), and the top end of the filter mesh sleeve (6) is fixedly connected to the tube body (1). A core shaft assembly (5) is coaxially provided inside the filter mesh sleeve (6). The output end of the driving motor (201) is connected to the core shaft assembly (5), and a sweeping mechanism (6) is provided inside the bottom valve (4). The scraping assembly (7) is provided with a clutch sleeve (8) at the bottom of the core shaft assembly (5), a bottom plate (401) is fixedly provided in the bottom valve (4), a fixing screw sleeve (11) is provided in the center of the bottom plate (401), a control bolt (10) is rotatably installed on the inner thread of the fixing screw sleeve (11), the top of the control bolt (10) is rotatably matched with the bottom of the clutch sleeve (8), the control bolt (10) realizes the clutch switching between the filtering action and the cleaning action through the clutch sleeve (8), and a valve plate (9) for controlling the discharge of flushing wastewater is rotatably installed on the outer side of the clutch sleeve (8).

2. A mechanical filter for wastewater treatment that is easy to clean according to claim 1, characterized in that: The core shaft assembly (5) includes a drive shaft (501) coaxially arranged with the filter mesh sleeve (6), the output end of the drive motor (201) is connected to the drive shaft (501), an outer sleeve (502) is sleeved on the outer side of the drive shaft (501), an absorption filter element (503) is uniformly arranged on the outer wall of the outer sleeve (502), the outer sleeve (502) is rotatably matched with the bottom of the filter mesh sleeve (6), a drive gear (504) is sleeved on the bottom of the drive shaft (501), and a rotating gear (505) is sleeved on the bottom of the outer sleeve (502).

3. A mechanical filter for wastewater treatment that is easy to clean according to claim 2, characterized in that: An annular protrusion (5011) is provided on the outer wall of the drive shaft (501), and an annular groove (5021) is provided on the inner wall of the outer sleeve (502), and the annular protrusion (5011) is adapted to be rotatably mounted in the annular groove (5021).

4. A mechanical filter for wastewater treatment that is easy to clean according to claim 3, characterized in that: The sweeping assembly (7) comprises a rotating disk (701), the rotating disk (701) is rotatably engaged with the bottom valve (4), a scraping plate (702) is evenly arranged on the upper end of the rotating disk (701), both sides of the scraping plate (702) are respectively in contact with the inner wall of the filter tank body (3) and the outer wall of the filter mesh sleeve (6), a sealing rotating seat (703) is arranged on the upper end of the scraping plate (702), and the bottom end of the filter mesh sleeve (6) is rotatably engaged with the sealing rotating seat (703), an extension sleeve (704) is arranged in the center of the rotating disk (701), a sweeping tooth groove (705) is arranged on the inner wall of the extension sleeve (704), and a water outlet hole (706) is provided through the rotating disk (701).

5. A mechanical filter for wastewater treatment that is easy to clean according to claim 4, characterized in that: The clutch sleeve (8) is coaxially arranged in the extension sleeve (704), and a driving tooth groove (801) and a rotating tooth groove (802) are provided on the inner wall of the clutch sleeve (8), and a sweeping gear (803) is provided on the outer wall of the clutch sleeve (8). The driving gear (504) is always engaged with the driving tooth groove (801), the rotating gear (505) corresponds to the rotating tooth groove (802), and the sweeping gear (803) corresponds to the sweeping tooth groove (705).

6. A mechanical filter for wastewater treatment that is easy to clean according to claim 5, characterized in that: The distance between the rotating gear (505) and the sweeping tooth groove (705) is greater than the distance between the rotating tooth groove (802) and the sweeping gear (803).

7. A mechanical filter for wastewater treatment that is easy to clean according to claim 1, characterized in that: The valve plate (9) is arranged against the bottom of the base plate (401), a first drainage hole (402) is provided through the base plate (401), and a second drainage hole (901) is provided through the valve plate (9), and the first drainage hole (402) and the second drainage hole (901) are arranged in the same manner.

8. A mechanical filter for wastewater treatment that is easy to clean according to claim 2, characterized in that: The water inlet (101) is connected to the filter tank body (3), a water pumping hole (103) is provided through the tube body (1), and the water outlet (102) is connected to the interior of the filter tank body (3) through the water pumping hole (103).

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