Automatic cleaning device and automatic cleaning method for yarn twisting workshop air conditioner spray filter

Abstract

The invention discloses an automatic cleaning device and an automatic cleaning method for a spray filter of an air conditioner in a yarn twisting workshop, which are applied to the technical field of automatic cleaning devices of spray filters, and the key points of the technical scheme are as follows: the automatic cleaning device comprises a filter cartridge and a filter screen fixedly connected in the filter cartridge, a water inlet pipe of a water suction pump and a water outlet pipe externally connected with a spraying system are respectively connected to the filter cartridge, and a drainage pipe for draining sewage and a flushing pipe for flushing water into the filter cartridge are fixedly connected to the bottom of the filter cartridge; the top of the filter cartridge is fixedly connected with an impact assembly which is movably connected in the vertical direction and is used for downwards impacting water flow to flush impurities away from the filter screen, and the bottom of the filter cartridge is fixedly connected with a turbulent flow assembly which is used for stirring the water flow to promote the impurities to be separated from the filter screen; the water outlet pipe is externally connected with a water storage assembly; the filter has the technical effects that the filter can be automatically cleaned, and shutdown is not needed in the cleaning process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic cleaning device for spray filter, in particular to an automatic cleaning device and method for spray filter of air conditioner in twisting workshop. BACKGROUND

[0002] In the twisting workshop, the environmental humidity has an important influence on the product quality and production efficiency, especially in the textile industry, too low humidity will increase the static electricity of fiber, affect the textile quality and the continuity of production, in order to ensure the humidity of the twisting workshop, the existing process production central air conditioner widely uses spray to humidify, but the industrial water contains many impurities, after long time spraying, the impurities will accumulate in the spray head and spray pipe, thereby causing the spray system to be blocked, and then affecting the normal spraying, when the spray system is blocked, it needs to be disassembled and cleaned, thereby affecting the normal production process.

[0003] Therefore, the existing technology usually sets a single cylinder filter at the water inlet end of the spray system to intercept the impurities in the water, but the existing air conditioner spray filter for the twisting workshop needs to be disassembled and cleaned manually every day to ensure the filtering effect and the water filtering amount, on the one hand, the manual cleaning operation is complicated, and the cleaning is difficult to realize timely cleaning, thereby causing the water filtering process to be blocked, and affecting the water spraying amount of the spray system; on the other hand, the manual cleaning efficiency is low, and the spray system cannot be used normally during the manual cleaning, thereby affecting the normal twisting production, therefore, it is necessary to design an automatic cleaning device for the spray filter to solve this problem. SUMMARY

[0004] The first object of the present application is to provide an automatic cleaning device for the spray filter of the air conditioner in the twisting workshop, which has the advantages of realizing automatic cleaning of the filter, and the cleaning process does not need to stop.

[0005] The above technical object of the present application is realized by the following technical scheme: an automatic cleaning device for the spray filter of the air conditioner in the twisting workshop, comprising a filter cylinder and a filter screen fixedly connected in the filter cylinder, the filter cylinder is connected with the water inlet pipe of the water pump and the water outlet pipe of the spray system, the bottom of the filter cylinder is also fixedly connected with the drain pipe for discharging sewage and the flushing pipe for flushing water into the filter cylinder, the top of the filter cylinder is fixedly connected with the impact assembly which is connected with the vertical direction and is movably connected for impacting the water flow downward to realize the separation of impurities from the filter screen, the bottom of the filter cylinder is fixedly connected with the turbulent flow assembly for stirring the water flow to promote the separation of impurities from the filter screen, and the water outlet pipe is externally connected with the water storage assembly.

[0006] The application is further provided with: the impact assembly comprises a floating block slidingly connected to the filter cartridge in the vertical direction and a movable impact plate movably connected to the bottom of the floating block in the vertical direction, a plurality of return springs are evenly arranged between the floating block and the movable impact plate, a water overflow groove is arranged on the bottom of the floating block, a pressing assembly for periodically pressing the movable impact plate downward is fixedly connected to the floating block, and a descending electric cylinder for driving the floating block to descend with the water level is fixedly connected to the filter cartridge in the vertical direction.

[0007] The application is further provided with: the pressing assembly comprises a first driving bevel gear coaxially and rotatably connected to the upper surface of the floating block and a second driving bevel gear rotatably connected to the floating block in the horizontal direction, a pressing cam for pressing the movable impact plate is fixedly connected to the second driving bevel gear, and a pressing driving motor for driving the first driving bevel gear is fixedly connected to the floating block.

[0008] The application is further provided with: the movable impact plate is an arc-shaped plate, and the concave surface of the arc-shaped plate faces downward.

[0009] The application is further provided with: the turbulence assembly comprises a turbulence paddle rotatably connected to the bottom of the filter cartridge and a turbulence motor fixedly connected to the filter cartridge and used for driving the turbulence paddle to rotate.

[0010] The application is further provided with: the water storage assembly comprises a water storage cavity fixedly connected to the water outlet pipe and a water supply pipe fixedly connected to the water storage cavity and used for supplying water to the spraying system, and a water supply pump is fixedly connected in the water storage cavity.

[0011] The application is further provided with: the flushing pipe is inserted into the filter cartridge, a water filling ball for flushing water to the filter screen is fixedly connected to the end of the flushing pipe, and a plurality of water flushing holes are evenly arranged on the water filling ball.

[0012] The application is further provided with: a differential pressure transmitter is fixedly connected to the side of the filter cartridge, the high-pressure measuring end of the differential pressure transmitter is arranged at the lower end of the filter screen, and the low-pressure end of the differential pressure transmitter is arranged at the upper end of the filter screen.

[0013] The application is further provided with: first, second, third and fourth electric valves for controlling the opening and closing of water flow are fixedly connected to the water inlet pipe, the water outlet pipe, the drain pipe and the flushing pipe respectively, the first and second electric valves are always open, and the third and fourth electric valves are always closed.

[0014] The second object of the present application is to provide an automatic cleaning method for the air conditioning spray filter of a twisting workshop, which has the advantage of realizing automatic cleaning of the filter, and the cleaning process does not need to stop.

[0015] The above technical object of the present application is realized by the following technical solution: an automatic cleaning device for the air conditioning spray filter of a twisting workshop, applied to the automatic cleaning device for the air conditioning spray filter of a twisting workshop as described in the above technical solution; comprising: Step 1: the water pump sends water into the filter cylinder from the water inlet pipe, the water is filtered by the filter screen and then sent into the spray system for spraying and humidifying through the water outlet pipe and the water storage assembly, at this time, the first electric valve and the second electric valve are always open, and the third electric valve and the fourth electric valve are always closed; Step 2: when the differential pressure transmitter detects that the upper and lower pressure difference of the filter screen is higher than the set value or step 1 continues to work for 4 hours, the first electric valve and the second electric valve are closed, and the fourth electric valve is opened, the water pump pumps water into the filter cylinder from the flushing pipe to fill the filter cylinder, and at the same time, the impurities at the bottom of the filter screen are preliminarily flushed and cleaned during the flushing process, the floating block rises with the water level, and the turbulence assembly works synchronously to generate vortex in the filter cylinder to further clean the impurities at the bottom of the filter screen, and the water storage assembly supplies water to the spray system during the process; Step 3: when the water level reaches the highest position, the fourth electric valve is closed, and the lower pressing assembly of the impact assembly drives the movable impact plate to move downward periodically, thereby driving the water to periodically impact the top of the filter screen to make the impurities separate from the filter screen, and during the process, the impact assembly works for at least 1 minute; Step 4: the third electric valve is opened, and the impurities separated from the filter screen follow the water flow and are discharged from the drain pipe, and the impact assembly descends synchronously as the water level descends, and continues to impact the water flow downward during the descending process to further promote the impurities to fall off; Step 5: when the waste water in the filter cylinder is discharged, the third electric valve is closed, and steps 1-4 are repeated at least once.

[0016] In summary, the present application has the following beneficial effects: 1. When the bottom of the filter screen is blocked by impurities, the water pressure difference between the upper and lower ends of the filter screen increases, the water pressure difference is monitored in real time by the pressure difference transmitter to automatically control the cleaning time, without manual attendance, when the water pressure difference reaches the set value or works for a certain time, the water inlet and outlet processes are cut off by closing the first electric valve and the second electric valve, at the same time, the fourth electric valve is opened to flush water into the filter cartridge through the flushing pipe to preliminarily clean the impurities at the bottom of the filter screen, and the turbulence motor drives the turbulence paddle to rotate to generate vortex in the filter cartridge to further strip the impurities remaining at the bottom of the filter screen, when the filter cartridge is full of water, the lower pressing assembly drives the first drive bevel gear to rotate through the lower pressing drive motor, then drives the second drive bevel gear and the lower pressing cam to rotate, thereby periodically driving the movable impact plate to impact the top of the filter to make the impurities separate from the filter screen, and the downward cylinder is used to suppress the upward reaction force acting on the floating plate when the movable impact plate impacts to make the floating block always adhere to the water surface, thereby ensuring the impact effect of the movable impact plate, finally, the impurities are discharged from the drain pipe together with the water, and the filter screen is cleaned at least twice to ensure the cleaning effect of the filter screen; 2. By connecting the water storage assembly to the water outlet pipe, a certain amount of filtered water is stored in the water storage cavity, so that water can continue to be supplied to the spraying system when the second electric valve is closed for cleaning, thereby ensuring that the cleaning process does not need to stop, and the structure is simple. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure explosion schematic diagram of the whole of the embodiment; Figure 2 is the structure sectional view of the whole of the embodiment; Figure 3 is the A part of Figure 2 is the A part of Figure 4 is the B part of Figure 2 is the B part of

[0018] Fig. 1 is a filter cartridge; 11 is a filter screen; 12 is a water inlet pipe; 13 is a water outlet pipe; 14 is a drain pipe; 16 is a flushing pipe; 17 is a first electric valve; 18 is a second electric valve; 19 is a third electric valve; 110 is a fourth electric valve; 2 is an impact assembly; 21 is a floating block; 22 is a movable impact plate; 23 is a return spring; 24 is an overflow tank; 25 is a lower pressing assembly; 251 is a first drive bevel gear; 252 is a second drive bevel gear; 253 is a lower pressing cam; 254 is a lower pressing drive motor; 26 is a downward cylinder; 3 is a turbulence assembly; 31 is a turbulence paddle; 32 is a turbulence motor; 4 is a water storage assembly; 41 is a water storage cavity; 42 is a water supply pipe; 43 is a water supply pump; 5 is a flushing ball; 51 is a flushing hole. DETAILED DESCRIPTION

[0019] The application will be further described in detail below with reference to the accompanying drawings.

[0020] Example 1: With reference to Figures 1 to 4 An automatic cleaning device for air conditioning spray filter in a twisting workshop, comprising a filter cylinder 1 and a filter screen 11 fixedly connected in the filter cylinder 1, a water inlet pipe 12 of a water pump and a water outlet pipe 13 of a spray system connected to the filter cylinder 1, the water inlet pipe 12 is arranged at the bottom of the filter cylinder 1, the water outlet pipe 13 is arranged at the top of the filter cylinder 1, when filtering, the water level in the filter cylinder 1 exceeds the filter screen 11 until the filter cylinder 1 is full, the water passing through the filter screen 11 is filtered and discharged from the water outlet pipe 13, when the filter screen 11 is blocked, the water pressure difference between the upper and lower ends of the filter screen 11 increases, a drain pipe 14 for discharging sewage and a flushing pipe 16 for flushing water into the filter cylinder 1 are also fixedly connected at the bottom of the filter cylinder 1, the flushing pipe 16 and the water inlet pipe 12 are connected in parallel on the water pump, first, second, third and fourth electric valves 17, 18, 19 and 110 for controlling the on-off of water flow are fixedly connected on the water inlet pipe 12, the water outlet pipe 13, the drain pipe 14 and the flushing pipe 16 respectively, the first and second electric valves 17 and 18 are always open, and the third and fourth electric valves 19 and 110 are always closed, an impact assembly 2 for impacting water flow downward to realize the separation of impurities from the filter screen 11 is fixedly connected on the top of the filter cylinder 1, a turbulent flow assembly 3 for stirring water flow to promote the separation of impurities from the filter screen 11 is fixedly connected at the bottom of the filter cylinder 1, a water storage assembly 4 is connected to the water outlet pipe 13 to ensure that the cleaning process does not need to stop, a differential pressure transmitter is fixedly connected to the side of the filter cylinder 1, the high pressure measuring end of the differential pressure transmitter is arranged at the lower end of the filter screen 11, and the low pressure end of the differential pressure transmitter is arranged at the upper end of the filter screen 11, the water pressure difference between the upper and lower ends of the filter screen 11 is detected in real time by the differential pressure transmitter, and the differential pressure result is fed back to the PLC controller, the PLC controller controls the on-off of the first, second, third and fourth electric valves 17, 18, 19 and 110, and controls the timing work of the impact assembly 2 and the turbulent flow assembly 3 to realize automatic cleaning.

[0021] With reference to Figures 2 to 3, specifically, the impact assembly 2 includes a floating block 21 slidingly connected in the filter cylinder 1 along the vertical direction, and a movable impact plate 22 movably connected at the bottom of the floating block 21 along the vertical direction, a plurality of return springs 23 are uniformly arranged between the floating block 21 and the movable impact plate 22, a guide sleeve is arranged on the floating block 21 along the vertical direction, a guide shaft is arranged on the movable impact plate 22 along the vertical direction, the return spring 23 is arranged in the guide sleeve, a water overflow groove 24 is formed at the bottom of the floating block 21, a downward pressing assembly 25 for periodically pressing the movable impact plate 22 downward is fixedly connected to the floating block 21, a descending electric cylinder 26 for driving the floating block 21 to descend with the water level is fixedly connected to the filter cylinder 1 along the vertical direction, the downward pressing assembly 25 includes a first drive bevel gear 251 coaxially and rotatably connected to the upper surface of the floating block 21, and a second drive bevel gear 252 rotatably connected to the floating block 21 along the horizontal direction, a downward pressing cam 253 for pressing the movable impact plate 22 is fixedly connected to the second drive bevel gear 252, and a downward pressing drive motor 254 for driving the first drive bevel gear 251 is fixedly connected to the floating block 21, when the filter cylinder 1 is filled with water, the downward pressing assembly 25 drives the first drive bevel gear 251 to rotate through the downward pressing drive motor 254, thereby driving the second drive bevel gear 252 and the downward pressing cam 253 to rotate, so as to periodically drive the movable impact plate 22 to impact the top of the filter, so that the impurities are separated from the filter screen 11, and the upward reaction force acting on the floating plate when the movable impact plate 22 impacts is suppressed through the descending electric cylinder 26, so that the floating block 21 always adheres to the water surface, ensuring the impact effect of the movable impact plate 22, and the water overflow groove 24 is formed at the bottom of the floating block 21, thereby reducing the resistance of the movable impact plate 22 during the rising process. In this embodiment, the movable impact plate 22 is an arc-shaped plate, and the concave surface of the arc-shaped plate is arranged downward, so that on the one hand, the arc-shaped movable impact plate 22 can gather water flow during the descending process, thereby exerting greater impact force on the filter screen 11; on the other hand, the arc-shaped movable impact plate 22 can further reduce the resistance during the rising process, which is more conducive to the resetting of the movable impact plate 22.

[0022] Reference Figure 2 , specifically, the turbulence assembly 3 includes a turbulence paddle 31 coaxially and rotatably connected to the bottom of the filter cylinder 1, and a turbulence motor 32 fixedly connected to the filter cylinder 1 for driving the turbulence paddle 31 to rotate, the turbulence motor 32 drives the turbulence paddle 31 to rotate, thereby generating vortex flow in the filter cylinder 1 to further strip the impurities remaining at the bottom of the filter screen 11.

[0023] Reference Figure 1Specifically, the water storage assembly 4 comprises a water storage cavity 41 fixedly connected to the water outlet pipe 13 and a water supply pipe 42 fixedly connected to the water storage cavity 41 and used for supplying water to the spraying system, the water storage cavity 41 is fixedly connected with a water supply pump 43, and a certain amount of filtered water is stored in the water storage cavity 41, so that water can continue to be supplied to the spraying system when the second electric valve 18 is closed for cleaning, thereby ensuring that the cleaning process does not need to stop.

[0024] Reference Figure 2 and Figure 4 Specifically, the end of the flushing pipe 16 extends into the filter cartridge 1, and the end of the flushing pipe 16 is fixedly connected with a water filling ball used for flushing water to the filter screen 11, a plurality of flushing holes 51 are uniformly arranged on the water filling ball 5, and water entering from the flushing pipe 16 is discharged to the bottom surface of the filter screen 11 in a fan shape through the flushing holes 51, so as to preliminarily clean the impurities at the bottom of the filter screen 11.

[0025] Embodiment 2 An automatic cleaning device for a twisting workshop air conditioning spraying filter, applied to the automatic cleaning device for a twisting workshop air conditioning spraying filter as shown in embodiment 1, comprising: Step 1: the water pump sends water from the water inlet pipe 12 into the filter cartridge 1, the water is filtered by the filter screen 11 and then sent into the spraying system through the water outlet pipe 13 and the water storage assembly 4 for spraying and humidifying, at this time, the first electric valve 17 and the second electric valve 18 are always open, and the third electric valve 19 and the fourth electric valve 110 are always closed; Step 2: when the differential pressure transmitter detects that the pressure difference of the filter screen 11 is higher than a set value or step 1 has been working for 4 hours, the first electric valve 17 and the second electric valve 18 are closed, the fourth electric valve 110 is opened, and the water pump pumps water from the flushing pipe 16 into the filter cartridge 1 to fill the filter cartridge 1, and at the same time, the impurities at the bottom of the filter screen 11 are preliminarily flushed and cleaned during the flushing process, the floating block 21 rises with the water level, and the turbulence assembly 3 works synchronously to generate vortex in the filter cartridge 1 to further clean the impurities at the bottom of the filter screen 11, and the water storage assembly 4 supplies water to the spraying system during the process; Step 3: when the water level reaches the highest position, the fourth electric valve 110 is closed, and the lower pressing assembly 25 of the impact assembly 2 drives the movable impact plate 22 to move downward periodically, thereby driving water to periodically impact the top of the filter screen 11 to make the impurities separate from the filter screen 11, and during the process, the impact assembly 2 works for at least 1 minute; Step 4: the third electric valve 19 is opened, and the impurities separated from the filter screen 11 are discharged from the drain pipe 14 along with the water flow, and the impact assembly 2 descends synchronously as the water level descends, and the water flow is continuously impacted downward during the descending process to further promote the impurities to fall off; Step 5. When the filter cartridge 1 is empty, the third electric valve 19 is closed and steps 1-4 are repeated at least once.

[0026] The embodiment is only illustrative, not limiting, of the application. Those skilled in the art will appreciate variations from the embodiments discussed without departing from the spirit and scope of the application. Accordingly, the application is limited only by the following claims.

Claims

1. An automatic cleaning device for air conditioning spray filter of a twisting mill, characterized in that, The utility model provides a filter cartridge (1) and fixedly connected filter screen (11) in the filter cartridge (1), the filter cartridge (1) on the branch of water inlet pipe (12) of water pump and the water outlet pipe (13) of external connection spray system, the filter cartridge (1) bottom is also fixedly connected with the drain pipe (14) for discharging sewage and the flush pipe (16) for flushing water to the filter cartridge (1) inside, the filter cartridge (1) top is along the fixed connection of along vertical direction activity connection is connected with the impact component (2) for the water flow of downward impact to realize the impurity of the impact of the filter screen (11) is removed, the filter cartridge (1) bottom is fixedly connected with the turbulent flow component (3) for agitating water flow to promote the impurity of the filter screen (11) is removed, the water outlet pipe (13) is externally connected with the water storage component (4).

2. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 1, wherein The impact component (2) includes a floating block (21) slidingly connected in the filter cartridge (1) along the vertical direction and an active impact plate (22) movably connected to the bottom of the floating block (21) along the vertical direction, a plurality of return springs (23) are uniformly arranged between the floating block (21) and the active impact plate (22), a water overflow groove (24) is formed in the bottom of the floating block (21), a pressing assembly (25) is fixedly connected to the floating block (21) for periodically pressing the active impact plate (22) downward, and a descending electric cylinder (26) is fixedly connected to the filter cartridge (1) along the vertical direction for driving the floating block (21) to descend with the water level.

3. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 2, wherein The pressing assembly (25) includes a first driving bevel gear (251) coaxially and rotatably connected to the upper surface of the floating block (21) and a second driving bevel gear (252) coaxially and rotatably connected to the floating block (21) along the horizontal direction, a pressing cam (253) is fixedly connected to the second driving bevel gear (252) for pressing the active impact plate (22), and a pressing driving motor (254) is fixedly connected to the floating block (21) for driving the first driving bevel gear (251).

4. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 2, wherein The active impact plate (22) is an arc-shaped plate, and the concave surface of the arc-shaped plate faces downward.

5. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 1, wherein The turbulent flow component (3) includes a turbulent flow paddle (31) coaxially and rotatably connected to the bottom of the filter cartridge (1) and a turbulent flow motor (32) fixedly connected to the filter cartridge (1) for driving the turbulent flow paddle (31) to rotate.

6. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 1, wherein The water storage component (4) includes a water storage cavity (41) fixedly connected to the water outlet pipe (13) and a water supply pipe (42) fixedly connected to the water storage cavity (41) for supplying water to the spray system, and a water supply pump (43) is fixedly connected in the water storage cavity (41).

7. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill according to claim 1, wherein The flush pipe (16) extends into the filter cartridge (1), and a water filling ball for flushing water to the filter screen (11) is fixedly connected to the end of the flush pipe (16), and a plurality of water flushing holes (51) are uniformly formed in the water filling ball (5).

8. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill room according to claim 1, wherein The differential pressure transmitter is fixedly connected to the side of the filter cartridge (1), the high-pressure measuring end of the differential pressure transmitter is arranged at the lower end of the filter screen (11), and the low-pressure end of the differential pressure transmitter is arranged at the upper end of the filter screen (11).

9. An automatic cleaning device for a spray filter of an air conditioner of a twisting mill according to any one of claims 1 to 8, characterized in that, The first electric valve (17), the second electric valve (18), the third electric valve (19) and the fourth electric valve (110) for controlling the on-off of water flow are fixedly connected to the water inlet pipe (12), the water outlet pipe (13), the drain pipe (14) and the flushing pipe (16) respectively, the first electric valve (17) and the second electric valve (18) are always open, and the third electric valve (19) and the fourth electric valve (110) are always closed.

10. An automatic cleaning device for an air conditioning spray filter in a yarn twisting workshop, applied to the automatic cleaning device for an air conditioning spray filter in a yarn twisting workshop as described in claim 9 above; characterized in that, Comprise: Step 1, the water pump sends water from the water inlet pipe (12) into the filter cartridge (1), the water is filtered through the filter screen (11) and then passes through the water outlet pipe (13) and the water storage assembly (4) to be sent into the spraying system for spraying and humidifying, at this time, the first electric valve (17) and the second electric valve (18) are always open, and the third electric valve (19) and the fourth electric valve (110) are always closed; Step 2, when the differential pressure transmitter detects that the pressure difference of the filter screen (11) is higher than the set value or step 1 works for 4 hours, the first electric valve (17) and the second electric valve (18) are closed, the fourth electric valve (110) is opened, the water pump pumps water from the flushing pipe (16) into the filter cartridge (1) to fill the filter cartridge (1), at the same time, the impurities at the bottom of the filter screen (11) are preliminarily cleaned during the flushing process, the floating block (21) rises with the water level, and the turbulence assembly (3) works synchronously to generate vortex in the filter cartridge (1) to further clean the impurities at the bottom of the filter screen (11), in this process, the water storage assembly (4) supplies water to the spraying system; Step 3, when the water level reaches the highest position, the fourth electric valve (110) is closed, the lower pressing assembly (25) of the impact assembly (2) drives the movable impact plate (22) to move downward periodically, so as to drive the water to periodically impact the top of the filter screen (11) to make the impurities separate from the filter screen (11), in this process, the impact assembly (2) works for at least 1 minute; Step 4, the third electric valve (19) is opened, the impurities separated from the filter screen (11) follow the water flow and are discharged from the drain pipe (14), and the impact assembly (2) descends synchronously as the water level descends, and the water flow is continuously impacted downward during the descending process to further promote the impurities to fall off; Step 5, when the waste water in the filter cartridge (1) is discharged, the third electric valve (19) is closed, and steps 1-4 are repeated at least once.

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