CN218076719U - Circulating water filtering device - Google Patents

Abstract

The utility model discloses a circulating water filter equipment relates to water purification unit technical field, the utility model discloses a water filter tank, water filter tank side fixed mounting has supporting component, water filter tank top surface is equipped with water inlet assembly and water outlet assembly, the inside elevation structure that is equipped with of water filter tank, the elevation structure surface is equipped with clean subassembly, water filter tank inner wall top surface fixed mounting has the filter core body, supporting component fixed surface installs electric putter and hydraulic stem, electric putter and hydraulic stem's flexible end bottom surface fixed mounting has the back cover subassembly, the utility model discloses an elevation structure drives clean subassembly and reciprocates, and then cleans filter core body surface and water filter tank inside, and the motor that can avoid rotating the clean production of brush transships, than the clean water conservation of washing method, moves down through the electric putter output and drives the back cover subassembly and move down, is convenient for erase the impurity that the back cover subassembly surface adheres, reduces clean dead angle.

Description

Circulating water filtering device

Technical Field

The utility model relates to a water purification unit technical field, concretely relates to circulating water filter equipment.

Background

Circulating water filter utilizes the filter core to filter aquatic impurity, thereby get rid of suspended solid and particulate matter in the water, reduce water turbidity, reach water purification's purpose, the filter is at the during operation, the impurity of aquatic can be held back at the filter core surface, too much impurity is attached to on the filter core surface after using for a long time, can influence the filter effect of filter core, and impurity accumulation is in the water storage structure of filter, can further aggravate the turbidity of water, increase and filter the degree of difficulty and purify the degree of difficulty, therefore, need regularly wash filter core and the inside water storage structure of filter in the filter.

Current filter often adopts and rotates brush type washing mode, control by the driving motor body, adjacent twice washing, motor body is just reversing alternate operation, and then realize cleanly, however, the cleaning process is realized the drive by motor body, must set up motor body overload protection in order effectively to protect motor body on the one hand, on the other hand twice cleaning time is longer makes to change the brush life-span short, the blowdown water consumption is many, in addition, motor body's dismouting and maintenance time are longer, the operation is complicated, can lead to the fact the influence such as shut down to stop the line to the line body of operation well, and need solitary electric cabinet system to control, the operation needs the professional to implement with the maintenance.

In order to solve the problems of the prior art, various solutions have been proposed through long-term research, and for example, chinese patent literature discloses a circulating water filter and a circulating water filtration system [ application No.: CN202023203288.2], which comprises a tank body and a filter element arranged inside the tank body, wherein the tank body is provided with a water inlet joint for circulating water to flow in and a first water outlet joint for circulating water to flow out, the circulating water filter further comprises a first high-pressure water pipe joint and a second high-pressure water pipe joint which are arranged on the tank body, the first high-pressure water pipe joint is used for enabling external high-pressure water to flow into the tank body to push the filter element to rotate, and the second high-pressure water pipe joint is used for enabling external high-pressure water to flow into the tank body to clean the filter element. Like this, when the filter need wash, the filter core receives the high-speed rivers impact action from the high-pressure water pipe joint for attached to the impurity on the filter core outer wall can be washed away, and the impact action of the high-speed rivers from the first high-pressure water pipe joint simultaneously can make the filter core rotate, thereby can carry out even washing to the surface of filter core, finally reaches the purpose of wasing the filter core.

The technical problem of prior art has been solved to a certain extent to above-mentioned scheme, but carry out the filter core through high-speed rivers method of erodeing and clean, the water consumption height, it rotates to drive the filter core through high-speed rivers impact, it is difficult to ensure the filter core at the uniform velocity rotation, this can lead to filter core surface cleaning inhomogeneous, and erode the impurity that gets off and can only discharge along with the rivers, nevertheless impurity has the part all the time to glue at jar internal wall bottom surface along with the in-process of rivers outflow, and this technical scheme can't carry out further cleanness to jar internal surface, this technical scheme still exists the dead angle to the cleanness of filter.

Therefore, a circulating water filtering device is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: adopt the inside problem that there is sanitary dead angle and waste water gauge height, the adoption is rotated brush type cleaning technique degree of difficulty and is high of the clean method of washing away method for solving circulating water filter equipment, the utility model provides a circulating water filter equipment.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a circulating water filter equipment, includes the water filter tank, water filter tank side fixed mounting has supporting component, the water filter tank top surface is equipped with water inlet assembly and goes out water assembly, water inlet assembly and the inside intercommunication of water filter tank, the inside elevation structure that is equipped with of water filter tank, the elevation structure surface is equipped with clean subassembly, water filter tank inner wall top surface fixed mounting has filter core body, clean subassembly laminating water filter tank inner wall side and filter core body side set up, go out water assembly and the inside intercommunication of filter core body, supporting component fixed surface installs electric putter and hydraulic stem, the flexible end bottom surface fixed mounting of electric putter and hydraulic stem has the back cover subassembly, the water filter tank bottom surface is located to the back cover subassembly.

Further, the supporting component comprises a fixing ring and supporting legs, the fixing ring is fixedly sleeved on the surface of the outer side wall of the water filtering tank, the supporting legs are fixedly installed on the side face of the fixing ring, the number of the supporting legs is three and is uniformly distributed on the side face of the fixing ring, the electric push rods are fixedly installed on the surface of the supporting legs on the rear side, the number of the hydraulic rods is two, and the hydraulic rods are fixedly installed on the surfaces of the two supporting legs on the front side.

Further, the water inlet assembly comprises a water inlet pipe, the water inlet pipe is fixedly installed on the front portion of the top surface of the water filtering tank and penetrates through the top wall of the water filtering tank, the surface of the water inlet pipe is provided with an electromagnetic valve, and the surface of the water inlet pipe is fixedly provided with a first flange head.

Further, go out the water subassembly and include the suction pump, suction pump fixed mounting is in water filter tank top surface middle part, the equal fixed mounting of suction pump delivery port and water inlet has outlet pipe, downside the outlet pipe run through the water filter tank roof setting and with the inside intercommunication of filter core body, upside outlet pipe fixed surface installs the second flange head.

Further, elevation structure includes motor body, threaded rod and slide bar, motor body fixed mounting is in water filter tank top surface right part, threaded rod and motor body output fixed connection, the threaded rod rotates with water filter tank roof to be connected the setting, slide bar fixed mounting in water filter tank inner wall top surface left part and with threaded rod symmetry setting.

Further, clean subassembly includes the lifting disk, the filter core body outside is located for ring column structure and cover to the lifting disk, the lifting disk with slide bar surface sliding connection and with threaded rod surface threaded connection, the water hole has been seted up on the lifting disk surface, lifting disk lateral surface fixed mounting has the case wall brush, lifting disk inside wall fixed mounting has the filter core brush, case wall brush laminating water filter incasement lateral wall surface sets up, filter core brush laminating filter core body side sets up.

Further, the bottom sealing assembly comprises a bottom cover, the bottom cover is fixedly installed on the bottom surface of the telescopic end of the electric push rod and the hydraulic rod, the mounting holes are formed in the top surface of the bottom cover, the number of the mounting holes is two, the mounting holes are arranged in a bilateral symmetry mode, the left side of the mounting holes are matched with the specifications of the slide rods in specification, the right side of the mounting holes are matched with the specifications of the threaded rods in specification, a sealing groove is formed in the top surface of the bottom cover, the specifications of the sealing groove are matched with the specifications of the side wall of the water filtering box, a sealing ring is arranged on the bottom surface of the inner wall of the sealing groove, a sewage pipe and a sewage pipe are fixedly installed on the bottom surface of the bottom cover and penetrate through the top surface of the bottom cover, and a drain valve is arranged on the surface of the sewage pipe.

The beneficial effects of the utility model are as follows:

the utility model discloses a lifting structure can drive clean subassembly and reciprocate, and then clean filter core body surface and drainage box inside, the motor that the inertia that can avoid rotating the brush clean production leads to transships, the technical degree of difficulty is low, simultaneously than the clean more water conservation of washing away method, move down through the electric putter output and drive back cover subassembly and drainage box bottom surface disconnection, make the impurity of gluing on back cover subassembly surface at the in-process that sewage flows out can easily be erased, reduce clean dead angle, better automatically cleaning ability has.

Drawings

FIG. 1 is a right side view of the three-dimensional structure of the present invention;

FIG. 2 is a side sectional view of the three-dimensional structure of the present invention;

FIG. 3 is a front sectional view of the three-dimensional structure of the present invention;

FIG. 4 is an enlarged view of the portion A of FIG. 2;

reference numerals are as follows: 1. a water filtering tank; 2. a support assembly; 201. a fixed ring; 202. supporting legs; 3. a water inlet assembly; 301. a water inlet pipe; 302. an electromagnetic valve; 303. a first flange head; 4. a water outlet assembly; 401. a water outlet pipe; 402. a water pump; 403. a second flange head; 5. a lifting structure; 501. a motor body; 502. a threaded rod; 503. a slide bar; 6. a cleaning assembly; 601. a lifting plate; 602. water passing holes; 603. brushing the walls of the box; 604. a filter element brush; 7. a filter element body; 8. an electric push rod; 9. a hydraulic rod; 10. a back cover assembly; 101. a bottom cover; 102. mounting holes; 103. a sealing groove; 104. a sewage pipe; 105. and (6) draining the water valve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "upper", and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the utility model is conventionally placed when in use, and are only for convenience of describing the utility model and simplifying the description, but not for indicating or implying that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

As shown in fig. 1 to 4, a circulating water filtering device, including water filtration tank 1, water filtration tank 1 side fixed mounting has supporting component 2, water filtration tank 1 top surface is equipped with into water subassembly 3 and play water subassembly 4, it communicates with water filtration tank 1 is inside to advance water subassembly 3, water filtration tank 1 is inside to be equipped with elevation structure 5, elevation structure 5 surface is equipped with clean subassembly 6, water filtration tank 1 inner wall top surface fixed mounting has filter core body 7, clean subassembly 6 laminating water filtration tank 1 inner wall side and filter core body 7 side set up, it communicates with filter core body 7 is inside to go out water subassembly 4, supporting component 2 fixed surface installs electric putter 8 and hydraulic stem 9, electric putter 8 and hydraulic stem 9's flexible end bottom surface fixed mounting has bottom sealing subassembly 10, bottom sealing subassembly 10 locates water filtration tank 1 bottom surface.

Specifically, in the normal use process, water to be filtered enters the water filter tank 1 through the water inlet assembly 3, the water filter element body 7 in the water filter tank 1 enters the filter element body 7 from the outside under the action of the water outlet assembly 4, and finally leaves the interior of the water filter tank 1 through the water outlet assembly 4, the water filtration is completed through the filter element body 7 in the process, after the circulating water filtering device is used for a period of time, in order to ensure the filtering effect of the filter element body 7, the interior of the water filter tank 1 and the surface of the filter element body 7 need to be cleaned, at this time, the lifting structure 5 is opened and then the cleaning assembly 6 can be driven to move up and down through the lifting structure 5, the surface of the filter element body 7 and the interior of the water filter tank 1 can be cleaned through the up and down movement of the cleaning assembly 6, the motor overload caused by the inertia generated by rotation cleaning can be avoided, meanwhile, the cleaning is compared with the flushing, after the sewage is discharged through the bottom sealing assembly 10 after the cleaning is completed, the electric push rod 8 is opened, the bottom sealing assembly 10 drives the bottom sealing assembly 10 to move down, the hydraulic rod 9 is extended, meanwhile, the bottom surface of the bottom sealing assembly 10 is gradually disconnected from the self-cleaning, impurities can be easily removed, and the impurities can be effectively, and the impurities can be prevented from being completely discharged, and the impurities can be effectively removed, and the impurities can be completely.

As shown in fig. 1, 2 and 3, the support assembly 2 comprises a fixing ring 201 and support legs 202, the fixing ring 201 is fixedly sleeved on the surface of the outer side wall of the water filtering tank 1, the support legs 202 are fixedly installed on the side surface of the fixing ring 201, the number of the support legs 202 is three and uniformly distributed on the side surface of the fixing ring 201, the electric push rods 8 are fixedly installed on the surface of the support legs 202 on the rear side, the number of the hydraulic rods 9 is two, and the hydraulic rods 9 are fixedly installed on the surfaces of the two support legs 202 on the front side.

Specifically, three supporting leg 202 can support this circulating filter device more firmly, it reciprocates to drive back cover subassembly 10 through electric putter 8, hydraulic stem 9 is because hydraulic damping's existence, its flexible end is when receiving decurrent exogenic action, inside hydraulic damping can exert reverse power to its flexible end, hinder its flexible end downstream, consequently, hydraulic stem 9 can exert ascending effort to back cover subassembly 10, alleviate the pulling force of back cover subassembly 10 to electric putter 8, and then alleviate electric putter 8's load, make the flexible end motion of electric putter 8 more smooth and easy, extension electric putter 8's life.

As shown in fig. 1 and 3, the water inlet assembly 3 includes a water inlet pipe 301, the water inlet pipe 301 is fixedly installed on the front portion of the top surface of the water filter tank 1 and penetrates through the top wall of the water filter tank 1, an electromagnetic valve 302 is arranged on the surface of the water inlet pipe 301, and a first flange head 303 is fixedly installed on the surface of the water inlet pipe 301.

Specifically, the external water pipe can be communicated with the water inlet pipe 301 through the first flange 303, so that water to be filtered can enter the water inlet pipe 301, the electromagnetic valve 302 can be opened or closed to control the time when the water enters the inside of the water filter tank 1, and further, the water amount in the water filter tank 1 is controlled to be kept in a proper range.

As shown in fig. 1, fig. 2 and fig. 3, the water outlet assembly 4 includes a water pump 402, the water pump 402 is fixedly mounted in the middle of the top surface of the water filtering tank 1, water outlets and water inlets of the water pump 402 are fixedly mounted with water outlet pipes 401, the lower water outlet pipe 401 penetrates through the top wall of the water filtering tank 1 and is communicated with the inside of the filter element body 7, and the upper water outlet pipe 401 is fixedly mounted with a second flange head 403.

Specifically, under the effect of suction pump 402 for inside water in the water filter tank 1 permeates to filter element body 7 with higher speed, and make the inside water of filter element body 7 flow through outlet pipe 401, can communicate outlet pipe 401 with outside water pipe through second flange head 403, conveniently carry the water after filtering to the target position.

As shown in fig. 1, 2 and 3, the lifting structure 5 includes a motor body 501, a threaded rod 502 and a sliding rod 503, the motor body 501 is fixedly mounted on the right portion of the top surface of the water filtering tank 1, the threaded rod 502 is fixedly connected with the output end of the motor body 501, the threaded rod 502 is rotatably connected with the top wall of the water filtering tank 1, and the sliding rod 503 is fixedly mounted on the left portion of the top surface of the inner wall of the water filtering tank 1 and symmetrically arranged with the threaded rod 502.

As shown in fig. 2, fig. 3 and fig. 4, the cleaning assembly 6 includes a lifting disc 601, the lifting disc 601 is of a circular structure and is sleeved outside the filter element body 7, the lifting disc 601 is connected with the sliding rod 503 in a surface sliding manner and is in threaded connection with the threaded rod 502 in a surface threaded manner, a water hole 602 is formed in the surface of the lifting disc 601, a case wall brush 603 is fixedly mounted on the outer side surface of the lifting disc 601, a filter element brush 604 is fixedly mounted on the inner side wall of the lifting disc 601, the case wall brush 603 is attached to the surface of the inner side wall of the water filtering case 1, and the filter element brush 604 is attached to the side surface of the filter element body 7.

Specifically, when the output end of the motor body 501 rotates, the threaded rod 502 is driven to rotate, because the lifting disc 601 is in threaded connection with the threaded rod 502 and is in sliding connection with the sliding rod 503, the lifting disc 601 can move up and down along the surfaces of the threaded rod 502 and the sliding rod 503, so that the tank wall brush 603 and the filter core brush 604 which are fixedly installed on the surface of the lifting disc 601 also move up and down synchronously, because the tank wall brush 603 is attached to the side surface of the inner wall of the water filtering tank 1 and the filter core brush 604 is attached to the side surface of the filter core body 7, and therefore the tank wall brush 603 and the filter core brush 604 can clean stains and impurities on the side surface of the inner wall of the water filtering tank 1 and the side surface of the filter core body 7 in the up and down moving process, and meanwhile, because water is stored in the water filtering tank 1, in the up and down moving process of the lifting disc 601, the water can flow through the water holes 602, the cleaning can be further promoted by the flowing of the water, and the stains and the impurities are prevented from being adhered to the surface of the structure.

As shown in fig. 1, 2 and 3, the bottom sealing assembly 10 includes a bottom cover 101, the bottom cover 101 is fixedly mounted on the bottom surfaces of the telescopic ends of the electric push rod 8 and the hydraulic rod 9, mounting holes 102 are formed in the top surface of the bottom cover 101, the number of the mounting holes 102 is two and the mounting holes are arranged in bilateral symmetry, the specification of the mounting hole 102 on the left side is matched with the specification of a sliding rod 503, the specification of the mounting hole 102 on the right side is matched with the specification of a threaded rod 502, a sealing groove 103 is formed in the top surface of the bottom cover 101, the specification of the sealing groove 103 is matched with the specification of the side wall of the water filtering tank 1, a sealing ring is arranged on the bottom surface of the inner wall of the sealing groove 103, a sewage pipe 104 is fixedly mounted on the bottom surface of the bottom cover 101, the sewage pipe 104 penetrates through the top surface of the bottom cover 101, and a drain valve 105 is arranged on the surface of the sewage pipe 104.

Specifically, after the cleaning is completed, the drain valve 105 is opened, water in the water filtering tank 1 flows out through the sewage pipe 104, the electric push rod 8 is opened, the telescopic end of the electric push rod 8 drives the bottom cover 101 to move downwards for a fixed distance and then stops, impurities and stains remained on the top surface of the bottom cover 101 can be erased at the moment, after the water filtering tank 1 of the bottom cover 101 is cleaned, the telescopic end of the electric push rod 8 drives the bottom cover 101 to move upwards, the bottom cover 101 is reset, after the bottom cover 101 is reset, the sliding rod 503 is inserted into the left mounting hole 102, the threaded rod 502 is inserted into the right mounting hole 102, the threaded rod 502 can be attached to the inner wall surface of the right mounting hole 102 to rotate, at the moment, the side wall of the water filtering tank 1 is inserted into the sealing groove 103, the bottom surface of the water filtering tank 1 is tightly attached to the sealing ring in the sealing groove 103, at the moment, water is injected into the water filtering tank 1 through the water inlet assembly 3, water cannot leak, and the water outlet assembly 4 is matched with the filter element body 7.

To sum up, the utility model discloses an elevation structure 5 can drive clean subassembly 6 and reciprocate, and then clean 7 surfaces of filter core body and water strainer 1 inside, can avoid rotating the motor that the inertia of brush clean production leads to transships, the technical degree of difficulty is low, simultaneously than the clean more water conservation of scouring method, move down through 8 outputs of electric putter and drive back cover subassembly 10 and water strainer 1 bottom surface disconnection, make the impurity that glues on back cover subassembly 10 surface can easily be erased at sewage outflow's in-process, reduce clean dead angle, better automatically cleaning ability has, the problem of circulating water filter equipment adoption scouring method clean its inside sanitary dead angle and waste water gauge height of existence, adopt to rotate brush clean method technical degree of difficulty height is solved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. The utility model provides a circulating water filter equipment, a serial communication port, including water filter tank (1), water filter tank (1) side fixed mounting has supporting component (2), water filter tank (1) top surface is equipped with into water subassembly (3) and play water subassembly (4), it communicates with water filter tank (1) inside to advance water subassembly (3), water filter tank (1) inside is equipped with elevation structure (5), elevation structure (5) surface is equipped with clean subassembly (6), water filter tank (1) inner wall top surface fixed mounting has filter core body (7), clean subassembly (6) laminating water filter tank (1) inner wall side and filter core body (7) side set up, go out water subassembly (4) and filter core body (7) inside intercommunication, supporting component (2) fixed surface installs electric putter (8) and hydraulic stem (9), the flexible end bottom surface fixed mounting of electric putter (8) and hydraulic stem (9) has back cover subassembly (10), water filter tank (1) bottom surface is located in back cover subassembly (10).

2. The circulating water filtering device according to claim 1, wherein the supporting assembly (2) comprises a fixing ring (201) and supporting legs (202), the fixing ring (201) is fixedly sleeved on the surface of the outer side wall of the water filtering box (1), the supporting legs (202) are fixedly installed on the side faces of the fixing ring (201), the supporting legs (202) are three and evenly distributed on the side faces of the fixing ring (201), the electric push rods (8) are fixedly installed on the surfaces of the supporting legs (202) on the rear side, the hydraulic rods (9) are two, and the hydraulic rods (9) are fixedly installed on the surfaces of the two supporting legs (202) on the front side.

3. A circulating water filtering device according to claim 1, wherein the water inlet assembly (3) comprises a water inlet pipe (301), the water inlet pipe (301) is fixedly installed on the front portion of the top surface of the water filtering tank (1) and penetrates through the top wall of the water filtering tank (1), the surface of the water inlet pipe (301) is provided with an electromagnetic valve (302), and the surface of the water inlet pipe (301) is fixedly provided with a first flange head (303).

4. A circulating water filtering device according to claim 1, wherein the water outlet assembly (4) comprises a water pump (402), the water pump (402) is fixedly installed in the middle of the top surface of the water filtering tank (1), a water outlet pipe (401) is fixedly installed at both a water outlet and a water inlet of the water pump (402), the water outlet pipe (401) at the lower side penetrates through the top wall of the water filtering tank (1) and is communicated with the inside of the filter element body (7), and a second flange head (403) is fixedly installed on the surface of the water outlet pipe (401) at the upper side.

5. The circulating water filtering device of claim 1, wherein the lifting structure (5) comprises a motor body (501), a threaded rod (502) and a sliding rod (503), the motor body (501) is fixedly mounted on the right portion of the top surface of the water filtering tank (1), the threaded rod (502) is fixedly connected with the output end of the motor body (501), the threaded rod (502) is rotatably connected with the top wall of the water filtering tank (1), and the sliding rod (503) is fixedly mounted on the left portion of the top surface of the inner wall of the water filtering tank (1) and symmetrically arranged with the threaded rod (502).

6. The circulating water filtering device according to claim 5, wherein the cleaning assembly (6) comprises a lifting disc (601), the lifting disc (601) is of a circular ring-shaped structure and is sleeved outside the filter element body (7), the lifting disc (601) is connected with a sliding rod (503) in a surface sliding manner and is in threaded connection with a threaded rod (502) in a surface threaded manner, a water passing hole (602) is formed in the surface of the lifting disc (601), a case wall brush (603) is fixedly mounted on the outer side surface of the lifting disc (601), a filter element brush (604) is fixedly mounted on the inner side wall of the lifting disc (601), the case wall brush (603) is attached to the inner side wall surface of the water filtering case (1), and the filter element brush (604) is attached to the side surface of the filter element body (7).

7. The circulating water filtering device of claim 1, wherein the bottom sealing assembly (10) comprises a bottom cover (101), the bottom cover (101) is fixedly installed on the bottom surfaces of the telescopic ends of the electric push rod (8) and the hydraulic rod (9), the top surface of the bottom cover (101) is provided with two mounting holes (102), the two mounting holes (102) are symmetrically arranged in the left-right direction, the size of the mounting hole (102) in the left side is matched with the size of the sliding rod (503), the size of the mounting hole (102) in the right side is matched with the size of the threaded rod (502), the top surface of the bottom cover (101) is provided with a sealing groove (103), the size of the sealing groove (103) is matched with the size of the side wall of the water filtering tank (1), a sealing ring is arranged on the inner wall of the sealing groove (103), a sewage pipe (104) is fixedly installed on the bottom surface of the bottom cover (101) and the sewage pipe (104) penetrates through the top surface of the bottom cover (101), and a drain valve (105) is arranged on the surface of the sewage pipe (104).

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