CN116651042A - Self-cleaning filter - Google Patents

Abstract

The invention provides a self-cleaning filter, which includes a cylinder body, a filter element assembly and a cleaning assembly arranged in the cylinder body, one side of the cylinder body is provided with a water inlet, the other side of the cylinder body is provided with a water outlet, and the filter element assembly includes a The filter plate at the lower part of the cylinder and several filter cartridges arranged on the filter plate; the cleaning assembly includes a cleaning unit arranged at the upper part of the cylinder and a drive unit for driving the cleaning unit. The upper end of the cylinder is provided with a cover plate, and the drive unit It includes a motor arranged on the cover plate and a lifter, the motor drives the cleaning unit to rotate, and the lifter drives the cleaning unit to slide up and down. The cleaning unit can extend into the cavity of the cylinder body, on the one hand, it can flush the inside of the filter cartridge, on the other hand, it can be sleeved on the outer wall of the filter cartridge driven by the drive unit, and clean the filter cartridge and the filter cartridge. The cylinder body is cleaned, and the cleaned sewage is discharged, so that the internal cleaning of the filter is more thorough, and there is no need to stop the machine, the cleaning efficiency is high, and the inconvenience of manual disassembly and washing is reduced.

Description

A self-cleaning filter

technical field

The invention relates to the technical field of filters, in particular to a self-cleaning filter.

Background technique

Filter is an indispensable device on the medium pipeline, widely used in metallurgy, chemical industry, petroleum, papermaking, medicine, food, mining, electric power, urban water supply and other fields. The filter is usually composed of a cylinder, a stainless steel filter screen, a sewage discharge part, a transmission device and an electrical control part. When the filter is working, the water to be filtered flows through the filter screen through the outlet filter, and enters the pipeline required by the user through the outlet for process circulation, and the particulate impurities in the water are trapped in the filter screen. With such a continuous cycle, more and more particles will be trapped, and the filtration speed will become slower and slower. However, the imported sewage will continue to enter, and the filter holes will become smaller and smaller. Therefore, the filter screen needs to be cleaned regularly.

The existing cleaning method is to disassemble the filter screen, clean it, and then reinstall it. On the one hand, this method is very tedious and time-consuming, and on the other hand, it needs to be shut down, which affects the work progress. There are also automatic backwash filters in the prior art. During the filtering process, the impurities inside the filter screen gradually accumulate, resulting in a pressure difference between the inlet and outlet. When the large difference reaches the set value, the differential pressure transmitter will The electric signal is sent to the controller, the control system starts the drive motor to drive the shaft to rotate through the transmission assembly, and at the same time the sewage outlet is opened, and the sewage is discharged from the sewage outlet. After the filter is cleaned, the pressure difference drops to the minimum value, and the system returns to the initial filtering state. The system is functioning normally. This cleaning method does not need to stop the machine, but there is also the problem of incomplete cleaning. For example, only the filter element can be cleaned, but the cylinder wall cannot be cleaned.

The patent with the notification number CN218221338U discloses a self-cleaning filter, which relates to the field of filter technology, including a main body, a cleaning structure and an anti-leakage structure. And the top of the main body away from the liquid outlet pipe is installed with a liquid inlet pipe, the anti-leakage structure is located inside the liquid inlet pipe, a mounting ring is installed horizontally inside the main body, and a placement ring is placed above the mounting ring , the bottom end of the placement ring is equipped with a filter tank, and the bottom end of the filter tank extends through the installation ring to the bottom end inside the main body, the top end of the main body is installed with an end cover, and the cleaning structure is located inside the filter tank. The filter scrapes the inner wall of the filter tank with a scraper, removes the solid matter on the inner wall, and leaves it on the top of the scraper, and then the staff can release the threaded connection between the end cover and the main body, and the scraper The impurities at the top can be removed, but manual removal is inefficient and the cylinder wall cannot be cleaned.

Contents of the invention

In view of this, the present invention provides a self-cleaning filter capable of cleaning the filter element and the inner wall of the cylinder with high cleaning efficiency.

In order to solve the above technical problems, the present invention provides a self-cleaning filter, which includes a cylinder body, a filter element assembly and a cleaning assembly arranged in the cylinder body, a water inlet is provided on one side of the cylinder body, and the cylinder body The other side is provided with a water outlet, and the filter element assembly includes a filter plate arranged on the lower part of the cylinder and several filter cartridges arranged on the filter plate, after the water to be filtered enters from the water inlet, it reaches the filter cartridge filter inside, and then output from the water outlet; the cleaning assembly includes a cleaning unit arranged on the upper part of the cylinder, a driving unit for driving the cleaning unit, a cover plate is provided on the upper end of the cylinder, and the driving unit It includes a motor arranged on the cover plate and a lifter, the motor drives the cleaning unit to rotate, and the lifter drives the cleaning unit to slide up and down.

With the technical solution of the present application, during the process of filtering water, the water to be filtered is input from the water inlet, and then enters the filter cartridge to be filtered, and is discharged from the water outlet through the cavity between the filter cartridge and the cylinder body. The cleaning unit can extend into the cavity of the cylinder, on the one hand, it can flush the inside of the filter cylinder, and on the other hand, driven by the driving unit, it can be sleeved on the outer wall of the filter cylinder to clean the filter cylinder and the cylinder , and discharge the cleaned sewage, so that the internal cleaning of the filter is more thorough, and there is no need to stop the machine, the cleaning efficiency is high, and the inconvenience of manual disassembly and washing is reduced.

Specifically, the cleaning unit includes a sewage pipe arranged on the filter plate, a snap ring arranged on the upper part of the sewage pipe, a sliding block arranged at the lower end of the snap ring, and a rectangular Lead screw, the rectangular lead screw nut that is arranged on the lower end of described filter cylinder and matches with described rectangular lead screw, and described sliding block is cylindrical structure, and the outer wall of described sliding block is provided with bristles, and described sliding block It is connected with the snap ring through rotation.

The sewage after flushing inside the filter cartridge is discharged from the sewage pipe. To clean the inner wall of the cylinder, the motor drives the snap ring to rotate, so that the slider is set on the filter cartridge, and the elevator drives the snap ring to slide downward, so that the rectangular screw and Rectangular lead screw and nut are matched and connected, the rectangular lead screw rotates, drives the sliding block to rotate, and cleans the inner wall of the cylinder, in order to improve the cleaning effect, the time for the sliding block to rotate can be lengthened, so that only the elevator drives the lead screw several times Slide up and down to make the rectangular lead screw and the rectangular lead screw nut gradually increase and decrease in contact with the end surface, and the cleaned impurities are discharged from the outlet. After cleaning, the elevator drives the lead screw and the snap ring to rise, and the rectangular lead screw and the rectangular The lever nut is disengaged, and the motor drives the sewage pipe and snap ring to rotate to the next filter cartridge to clean the filter cartridge.

Preferably, the sewage discharge pipe is a U-shaped pipe, and the two straight pipes of the U-shaped pipe are different in length, namely a long straight pipe and a short straight pipe, and the long straight pipes pass through the filter plate and the snap ring in sequence , cover plate, stretch out described cover plate, described short straight pipe is positioned at the bottom of described filter plate, can be connected with the lower end of described filter cartridge, and described short straight pipe can be connected with each described filter cartridge in turn through rotation Connect, flush the filter cartridge, and discharge the flushed sewage from the long straight pipe.

With such a design, the short straight pipe can be driven to rotate by rotating the long straight pipe, and the long straight pipe protrudes from the cover plate, which is convenient for the motor to drive and rotate. By rotating the long straight pipe, the short straight pipes are connected to each filter cartridge in turn to achieve the purpose of washing each filter cartridge in turn. After washing, the sewage is discharged from the long straight pipe. After the washing is completed, the water can continue to be filtered.

Specifically, the position where the long straight pipe protrudes from the cover plate is provided with a gear one, and the output shaft of the motor is provided with a gear two meshing with the gear one, and the motor drives the gear one to rotate, Through the meshing of the first gear and the second gear, the long straight tube is driven to rotate, and then the short straight tube and the snap ring are driven to rotate. When the short straight tube rotates to the lower end of the filter cartridge that needs to be cleaned, When connected with the filter cartridge, the snap ring drives the sliding block to rotate to the upper end of the filter cartridge.

The rotation of the long straight tube is driven by the motor and driven by gears, which in turn drives the snap ring to rotate, and the snap ring drives the sliding block to rotate to clean the inner wall of the cylinder. There is a gap between the filter cartridge and the cylinder, which can be filled with bristles .

In addition, the snap ring is provided with an annular slot, the slot is provided with a block, the block can slide in the slot, the block is connected with a lead screw, and the elevator drives The lead screw slides up and down, and then drives the snap ring to slide up and down.

The lead screw is set in the ring-shaped groove of the snap ring through the clamping block. The up and down movement of the lead screw drives the snap ring to move up and down, and then drives the sliding block to move up and down. In the card slot, in the vertical state, the card block will not disengage from the card slot. When the long straight tube drives the snap ring to rotate, the relative rotation between the card block and the card slot can be maintained. At this time, the card slot rotates, and the card The block and lead screw do not move.

One side of the sliding block is provided with a strip-shaped opening, and both sides of the opening are provided with scrapers inwardly. When the sliding block is sleeved on the filter cartridge, the liquid in the cylinder passes through the The opening flows into the filter cartridge, the scraper scrapes the impurities on the filter cartridge, and the scraped impurities flow through the opening and are discharged from the water outlet.

The liquid in the cylinder flows into the filter cartridge through the opening to flush the inside of the filter cartridge, and the flushed sewage is output from the sewage pipe, and the scraper scrapes the impurities on the outer wall of the filter cartridge, and the scraped impurities flow into the filter cartridge and the cartridge In the cavity between the cylinders, the impurities brushed off the inner wall of the cylinder are mixed with the sliding block and discharged from the water outlet.

Further, the upper end of the long straight pipe is designed to be arc-shaped to facilitate the discharge of sewage after flushing.

In addition, the filter plate divides the cylinder body into an upper chamber and a lower chamber, the water outlet is located on the upper chamber, the water inlet is located on the lower chamber, and the water to be filtered comes from the After the water inlet enters, it flows into the lower chamber, enters the filter cartridge and is filtered, then reaches the upper chamber, and is discharged from the water outlet.

The water inlet is located under the filter plate, and the water outlet is located on the upper part of the filter cartridge. A filter element is installed in the filter cartridge, and after being filtered, it is discharged from the water outlet.

In addition, the lower part of the cylinder is provided with feet to support the cylinder.

In addition, the long straight pipe is slidably connected to a snap ring, and the snap ring can slide up and down along the long straight pipe, and when the long straight pipe rotates, the snap ring is driven to rotate.

The beneficial effects of above-mentioned technical scheme of the present invention are as follows:

1. In the process of cleaning the filter, people often clean the filter cartridge, and it is easy to ignore the cleaning of the cylinder wall. The cleaning unit of this application can extend into the cavity of the cylinder, on the one hand, it can flush the inside of the filter cartridge, On the other hand, under the drive of the drive unit, it can be sleeved on the outer wall of the filter cartridge to clean the filter cartridge and the cylinder body, and discharge the cleaned sewage, so that the filter can be cleaned more thoroughly without stopping the machine. The cleaning efficiency is high, reducing the inconvenience of manual disassembly and washing.

2. The sewage pipe is rotated by the motor to flush the interior of each filter cartridge in turn. At the same time, during the process of flushing the filter cartridge, the outer wall of the filter cartridge and the inner wall of the cylinder body can be cleaned, and the card is driven by the motor. The ring rotates so that the slider is set on the filter cartridge, and the elevator drives the snap ring to slide down, so that the rectangular screw and the rectangular screw nut are connected together, and the rectangular screw rotates to drive the sliding block to rotate to clean the inner wall of the cylinder. At the same time, the scraper in the sliding block scrapes the inner wall of the filter cartridge, and the cleaned impurities are discharged from the water outlet. After cleaning, the elevator drives the screw and the snap ring to rise, the rectangular screw and the rectangular screw nut are separated, and the motor drives The drain pipe and the snap ring are rotated to the next filter cartridge, and the filter cartridge is cleaned, and the cleaning is more thorough.

3. The present invention does not need to stop the machine. After cleaning, the driving unit drives the cleaning unit to rise and continue to filter the water, which shortens the time for cleaning the filter due to the machine stop and improves the filtration efficiency.

Description of drawings

Fig. 1 is the structural representation of self-cleaning filter of the present invention;

Fig. 2 is the sectional view of self-cleaning filter of the present invention;

Fig. 3 is the structural representation that filter cartridge of the present invention is connected with rectangular lead screw nut;

Fig. 4 is the structure schematic diagram that elevator of the present invention, snap ring, sliding block are connected;

Fig. 5 is a schematic structural view of the rectangular lead screw nut connection of the present invention;

Fig. 6 is a structural schematic diagram of the snap ring of the present invention;

Fig. 7 is a schematic structural diagram of the sliding block of the present invention.

In the figure: 1. Sewage pipe; 2. Elevator; 3. Motor; 4. Water outlet; 5. Cylinder; 6. Water inlet; 11. Long straight tube; 12. Short straight tube; 13. Sliding block; 14. Rectangular screw nut; 15. Rectangular screw; 16. Filter plate; 17. Scraper; 18. Bristles; 19. Block; 20 , card slot.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to Figures 1-7 of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

Example

A self-cleaning filter, comprising a cylinder body 5, a filter element assembly and a cleaning assembly arranged in the cylinder body 5, one side of the cylinder body 5 is provided with a water inlet 6, and the other side of the cylinder body 5 A water outlet 4 is provided, and the filter element assembly includes a filter plate 16 arranged at the bottom of the cylinder body 5 and several filter cartridges 10 arranged on the filter plate 16. After the water to be filtered enters from the water inlet 6, Filter in the filter cartridge 10, and then output from the water outlet 4; the cleaning assembly includes a cleaning unit arranged on the upper part of the cylinder body 5, a driving unit for driving the cleaning unit, and the upper end of the cylinder body 5 is provided with The cover plate, the drive unit includes a motor 3 and a lifter 2 arranged on the cover plate, the motor 3 drives the cleaning unit to rotate, and the lifter 2 drives the cleaning unit to slide up and down.

With this technical scheme, in the process of filtering water, the water to be filtered is input from the water inlet 6, and then enters the filter cartridge 10 for filtration, passes through the cavity between the filter cartridge 10 and the cylinder body 5, and flows from the water outlet 4 discharge. The cleaning unit can extend into the cavity of the cylinder body 5. On the one hand, it can flush the inside of the filter cartridge 10. On the other hand, it can be sleeved on the outer wall of the filter cartridge 10 under the drive of the drive unit. The cylinder body 5 is cleaned, and the cleaned sewage is discharged, so that the inside of the filter can be cleaned more thoroughly without shutting down the filter, the cleaning efficiency is high, and the inconvenience of manual dismantling and cleaning is reduced.

Specifically, the cleaning unit includes the sewage pipe 1 arranged on the filter plate 16, the snap ring 9 arranged on the upper part of the sewage pipe 1, the sliding block 13 arranged at the lower end of the snap ring 9, and the The rectangular lead screw 15 at the bottom of the sliding block 13, the rectangular lead screw nut 14 that is arranged on the lower end of the filter cartridge 10 and cooperates with the rectangular lead screw 15, the sliding block 13 is a cylindrical structure, and the sliding The outer wall of the block 13 is provided with bristles 18, and the sliding block 13 is connected to the clasp 9 through rotation.

The sewage after washing inside the filter cartridge 10 is discharged from the sewage pipe 1, and the inner wall of the cylinder body 5 is cleaned. The motor 3 drives the snap ring 9 to rotate, so that the slider is set on the filter cartridge 10, and the lifter 2 drives the snap ring 9 Sliding downwards, the rectangular lead screw 15 is connected with the rectangular lead screw nut 14, the rectangular lead screw 15 rotates, drives the sliding block 13 to rotate, and the inner wall of the cylinder 5 is cleaned, in order to improve the cleaning effect, the sliding block can be 13 The rotation time is lengthened, so that the elevator 2 only needs to drive the lead screw 8 to slide up and down multiple times, so that the rectangular lead screw 15 and the rectangular lead screw nut 14 gradually increase and decrease the contact end surface, and the cleaned impurities are discharged from the water outlet 4 After the cleaning is completed, the elevator 2 drives the lead screw 8 and the snap ring 9 to rise, the rectangular lead screw 15 is separated from the rectangular lead screw nut 14, and the motor 3 drives the sewage pipe 1 and the snap ring 9 to rotate to the next filter cartridge 10. Canister 10 is cleaned. Elevator 2 is leading screw 8 elevator 2, can drive leading screw 8 to move up and down. The rotational connection between snap ring 9 and sliding block 13 can be bearing connection, certainly also can be the mode of other rotational connections, and sliding block 13 can rotate under the drive of rectangular leading screw 15 and rectangular leading screw nut 14, and snap ring 9 does not rotate.

As a preferred mode of this embodiment, the sewage discharge pipe 1 is a U-shaped pipe, and the two straight pipes of the U-shaped pipe are different in length, and are respectively a long straight pipe 11 and a short straight pipe 12, and the long straight pipe 11 passes through the filter plate 16, snap ring 9, and cover plate in turn, and stretches out the cover plate. The short straight pipe 12 is located at the bottom of the filter plate 16 and can be connected to the lower end of the filter cartridge 10 , the short straight pipe 12 can be connected to each of the filter cartridges 10 in turn by rotating, to flush the filter cartridge 10 and discharge the washed sewage from the long straight pipe 11 .

With such a design, the short straight pipe 12 can be driven to rotate by rotating the long straight pipe 11, and the long straight pipe 11 stretches out from the cover plate to facilitate the motor 3 to drive and rotate. By rotating the long straight pipe 11, the short straight pipe 12 is connected to each filter cartridge 10 in turn to achieve the purpose of washing each filter cartridge 10 in turn. The washed sewage is discharged from the long straight pipe 11. After the flushing is completed, the water can be continuously washed. to filter.

Specifically, the position where the long straight pipe 11 protrudes from the cover plate is provided with a gear one, and the output shaft of the motor 3 is provided with a gear two meshing with the gear one, and the motor 3 drives the gear One rotation, through the meshing of the first gear and the second gear, the long straight pipe 11 is driven to rotate, and then the short straight pipe 12 and the snap ring 9 are driven to rotate, when the short straight pipe 12 rotates to the desired cleaning position When the lower end of the filter cartridge 10 is connected with the filter cartridge 10 , the snap ring 9 drives the sliding block 13 to rotate to the upper end of the filter cartridge 10 .

The rotation of the long straight pipe 11 is driven by the motor 3 and driven by gears, and then drives the snap ring 9 to rotate, and the snap ring 9 drives the sliding block 13 to rotate to clean the inner wall of the cylinder 5, leaving a gap between the filter cartridge 10 and the cylinder 5 There is a gap, the bristles 18 can be filled in the gap.

As a preferred mode of this embodiment, the snap ring 9 is provided with an annular locking groove 20, and the locking block 19 is provided in the locking groove 20, and the locking block 19 can slide in the locking groove 20, The clamping block 19 is connected with a lead screw 8, and the elevator 2 drives the lead screw 8 to slide up and down, and then drives the snap ring 9 to slide up and down.

The leading screw 8 is set in the annular groove 20 of the snap ring 9 through the clamping block 19. The up and down movement of the leading screw 8 drives the snap ring 9 to move up and down, and then drives the sliding block 13 to move up and down. The length of the bottom of the locking groove 20 is greater than that of the end. length, the clamping block 19 can be obliquely clamped in the clamping groove 20, and in the vertical state, the clamping block 19 will not disengage from the clamping groove 20, and when the long straight pipe 11 drives the snap ring 9 to rotate, the clamping block 19 and the clamping groove 20 can keep relative rotation, at this moment, the draw-in groove 20 rotates, and the clamping block 19 and leading screw 8 do not move.

One side of the sliding block 13 is provided with a strip-shaped opening, and both sides of the opening are provided with scrapers 17 inwardly. When the sliding block 13 is sleeved on the filter cartridge 10, the cylinder body The liquid in 5 flows into the filter cartridge 10 through the opening, and the scraper 17 scrapes the impurities on the filter cartridge 10, and the scraped impurities flow through the opening and are removed from the filter cartridge 10. Water outlet 4 discharges.

The liquid in the cylinder body 5 flows into the filter cartridge 10 through the opening to flush the inside of the filter cartridge 10, and the flushed sewage is output from the sewage pipe 1. The impurities that come down flow into the cavity between the filter cartridge 10 and the cylinder body 5 , and are mixed with the impurities brushed off the inner wall of the cylinder body 5 by the sliding block 13 , and are discharged from the water outlet 4 . In this embodiment, the number of filter cartridges 10 is four, and the number of corresponding rectangular screw nuts 14 is also four, of course, other numbers can also be designed.

As a preferred mode of this embodiment, the upper end of the long straight pipe 11 is designed to be arc-shaped to facilitate the discharge of sewage after flushing.

In addition, the filter plate 16 divides the cylinder 5 into an upper chamber and a lower chamber, the water outlet 4 is located on the upper chamber, and the water inlet 6 is located on the lower chamber, After the water to be filtered enters from the water inlet 6, it flows into the lower chamber, enters the filter cartridge 10 and is filtered, then reaches the upper chamber, and is discharged from the water outlet 4.

The water inlet 6 is located below the filter plate 16, and the water outlet 4 is located on the top of the filter cartridge 10. A filter element is installed in the filter cartridge 10, and after filtering, it is discharged from the water outlet 4.

As a preferred mode of this embodiment, the lower part of the cylinder body 5 is provided with a leg 7 to support the cylinder body 5 .

As a preferred mode of this embodiment, the long straight pipe 11 is slidingly connected to the snap ring 9, and the snap ring 9 can slide up and down along the long straight pipe 11. When the long straight pipe 11 rotates, To drive the snap ring 9 to rotate, the sliding connection is a key connection, and of course other sliding connection methods can also be used.

The usage method of the present invention:

1. When filtering water, the water to be filtered enters the filter cartridge 10 after entering from the water inlet 6, and the filtered water is discharged from the water outlet 4, and most of the filtered impurities are adsorbed on the filter cartridge 10;

2. Regularly clean the filter cartridge 10. When cleaning, start the motor 3 to drive the long straight pipe 11 to rotate. The long straight pipe 11 drives the short straight pipe 12 and the snap ring 9 to rotate. When the short straight pipe 12 rotates to meet the filter cartridge 10 When the lower part of the filter cartridge is connected, the snap ring 9 drives the sliding block 13 to rotate to the top of the filter cartridge 10, the motor 3 is turned off, and the water entering the filter cartridge 10 flushes the inner wall of the filter cartridge 10, and the washed sewage flows from the long straight pipe 11 Internal discharge; start the elevator 2, drive the snap ring 9 down through the screw rod, and the sliding block 13 is sleeved on the filter cartridge 10. When the rectangular screw 15 touches the rectangular screw nut 14 and slowly descends or rises, the sliding block 13 Start to rotate, the bristles 18 clean the inner wall of the cylinder 5, impurities flow into the cavity between the cylinder 5 and the filter cartridge 10, at the same time, the scraper 17 wipes the outer wall of the filter cartridge 10, and the scraped Impurities also flow into the cavity between the cylinder body 5 and the filter cartridge 10 through the opening, and are discharged from the drain port. At the same time, the opening also facilitates water penetration into the filter cartridge 10 to flush the filter cartridge 10;

3. After cleaning a filter cartridge 10, the elevator 2 drives the lead screw 8 and the snap ring 9 to rise, the rectangular lead screw 15 is separated from the rectangular lead screw nut 14, and the motor 3 drives the sewage pipe 1 and the snap ring 9 to rotate to the next filter cartridge 10, the filter cartridge 10 is cleaned;

4. When the filter cartridge 10 is completely cleaned, the elevator 2 drives the screw 8 and the snap ring 9 to rise, and the motor 3 drives the sewage pipe 1 and the snap ring 9 to rotate, so that the short straight pipe 12 is separated from the filter cartridge 10, and the cleaning is completed, continue Filter the water.

In addition, it should be noted that, in the description of the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a It is a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be the internal communication of two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The above description is a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. A self-cleaning filter, comprising a cylinder (5), a filter element assembly and a cleaning assembly arranged in the cylinder (5), one side of the cylinder (5) is provided with a water inlet (6) , the other side of the cylinder (5) is provided with a water outlet (4), characterized in that: The filter element assembly includes a filter plate (16) arranged on the lower part of the cylinder (5), several filter cartridges (10) arranged on the filter plate (16), and the water to be filtered flows from the water inlet (6) After entering, filter in the filter cartridge (10), and then output from the water outlet (4); The cleaning assembly includes a cleaning unit arranged on the upper part of the cylinder (5), a driving unit for driving the cleaning unit, the upper end of the cylinder (5) is provided with a cover plate, and the driving unit includes a The motor (3) and the elevator (2) on the cover plate, the motor (3) drives the cleaning unit to rotate, and the elevator (2) drives the cleaning unit to slide up and down; The cleaning unit can extend into the cavity of the cylinder body (5), on the one hand, it can flush the inside of the filter cartridge (10), on the other hand, it can be sleeved in the filter cartridge (10) driven by the driving unit. On the outer wall of the filter cartridge (10), the filter cartridge (10) and the barrel (5) are cleaned, and the cleaned sewage is discharged. 2. The self-cleaning filter according to claim 1, characterized in that: the cleaning unit includes a sewage pipe (1) arranged on the filter plate (16), an upper part of the sewage pipe (1) The snap ring (9), the sliding block (13) that is arranged on the lower end of the snap ring (9), the rectangular lead screw (15) that is arranged on the bottom of the sliding block (13), is arranged on the filter cartridge (10 ) the lower end of the rectangular lead screw nut (14) matched with the rectangular lead screw (15), the sliding block (13) is a cylindrical structure, and the outer wall of the sliding block (13) is provided with bristles ( 18); The sliding block (13) is connected to the snap ring (9) through rotation, and the motor (3) drives the snap ring (9) to rotate, so that the sliding block is sleeved on the filter cartridge (10) above, the elevator (2) drives the snap ring (9) to slide downwards, so that the rectangular lead screw (15) is connected with the rectangular lead screw nut (14) to realize the rotation of the sliding block (13), The inner wall of the cylinder (5) is cleaned, and the cleaned impurities are discharged from the water outlet (4). 3. The self-cleaning filter according to claim 2, characterized in that: the sewage pipe (1) is a U-shaped pipe, and the two straight pipes of the U-shaped pipe are different in length, and are respectively long straight pipes (11 ) and short straight pipe (12), described long straight pipe (11) passes through described filter plate (16), snap ring (9), cover plate successively, stretches out described cover plate, described short straight pipe ( 12) Located at the bottom of the filter plate (16), it can be connected to the lower end of the filter cartridge (10), and the short straight pipe (12) can be connected to each of the filter cartridges (10) in sequence through rotation, The filter cartridge (10) is flushed, and the flushed sewage is discharged from the long straight pipe (11). 4. The self-cleaning filter according to claim 3, characterized in that: the position where the long straight pipe (11) protrudes from the cover plate is provided with gear one, and the output shaft of the motor (3) is provided with There is a gear two meshed with the first gear, the motor (3) drives the first gear to rotate, and through the engagement of the first gear and the second gear, the long straight pipe (11) is driven to rotate, and then drives the The short straight pipe (12) and the snap ring (9) rotate, and when the short straight pipe (12) rotates to the lower end of the filter cartridge (10) to be cleaned and is connected with the filter cartridge (10), The snap ring (9) drives the sliding block (13) to rotate to the upper end of the filter cartridge (10). 5. The self-cleaning filter according to claim 4, characterized in that: the snap ring (9) is provided with an annular slot (20), and the slot (20) is provided with a block (19) , the block (19) can slide in the slot (20), the block (19) is connected with a lead screw (8), and the elevator (2) drives the lead screw (8) slide up and down, and then drive the snap ring (9) to slide up and down. 6. The self-cleaning filter according to claim 5, characterized in that: one side of the sliding block (13) is provided with a strip-shaped opening, and both sides of the opening are provided with scrapers (17) , when the sliding block (13) is sleeved on the filter cartridge (10), the liquid in the cylinder (5) flows into the filter cartridge (10) through the opening, and the scraper The plate (17) scrapes the impurities on the filter cartridge (10), and the scraped impurities flow through the opening and are discharged from the water outlet (4). 7. The self-cleaning filter according to claim 6, characterized in that: the upper end of the long straight pipe (11) is designed as an arc. 8. The self-cleaning filter according to claim 7, characterized in that: the filter plate (16) divides the cylinder (5) into an upper chamber and a lower chamber, and the water outlet (4 ) is located on the upper chamber, and the water inlet (6) is located on the lower chamber, after the water to be filtered enters from the water inlet (6), it flows into the lower chamber and enters the filter After being filtered in the cylinder (10), it reaches the upper chamber and is discharged from the water outlet (4). 9. The self-cleaning filter according to claim 8, characterized in that: the lower part of the cylinder (5) is provided with feet (7). 10. The self-cleaning filter according to claim 9, characterized in that: said long straight pipe (11) is in sliding connection with snap ring (9), and said snap ring (9) can The pipe (11) slides up and down, and when the long straight pipe (11) rotates, it can drive the snap ring (9) to rotate.