CN220899728U - Water pump self-cleaning device - Google Patents

Abstract

The utility model discloses a self-cleaning device of a water pump, which comprises: the filter cover is circumferentially provided with a plurality of filter holes which are arranged at intervals; the frame body is arranged on the filter cover and provided with a mounting rod which is internally arranged in the filter cover, and a plurality of limiting strips extending along the vertical direction are arranged on the mounting rod at intervals; the cleaning mechanism is movably arranged on the mounting rod and comprises a push plate piece and a connecting rod assembly, one end of the connecting rod assembly is connected with the push plate piece, the other end of the connecting rod assembly is connected with a transmission piece, the transmission piece is sleeved on the outside of the mounting rod and is provided with a driving assembly for pushing the driving assembly to reciprocate along the vertical direction, and a mutually matched wedge-shaped structure is arranged between the transmission piece and the upper end of the limiting strip. The self-cleaning device of the water pump with the structure can periodically clean sundries in each filtering hole through the cleaning mechanism, so that the filtering cover is prevented from being blocked, and the operation of the water pump is ensured.

Description

Water pump self-cleaning device

Technical Field

The utility model relates to the technical field of water pump cleaning, in particular to a self-cleaning device for a water pump.

Background

The existing water pump is generally provided with a water inlet and a water outlet, and negative pressure suction can be continuously formed at the water inlet, so that water is pumped from a low place to a high place or a far place, and the water pump is favorable for production and use.

In the actual use process, because the water contains more sundries, the water pump is usually provided with a filter cover to intercept the sundries in the water in order to reduce the blockage caused by the suction of the sundries by the water pump. However, as the water is also provided with tiny impurities, the tiny impurities are easy to adhere to the inner wall and the outer wall of the filter cover, and the tiny impurities can be accumulated in the filter holes of the filter cover when serious, so that the filter holes are blocked, and the normal operation of the water pump is affected. In order to avoid the blocking phenomenon of the filter cover, manual cleaning is needed periodically, but the manual cleaning mode is adopted, so that the cleaning efficiency is slower, the cleaning time is relatively longer, and the labor intensity of people is increased.

Disclosure of utility model

In order to overcome the defects, the utility model provides the self-cleaning device for the water pump, which can periodically clean sundries in each filtering hole through the cleaning mechanism, so that the filtering cover is prevented from being blocked, and the operation of the water pump is ensured.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

A self-cleaning device for a water pump, comprising: the filter cover is circumferentially provided with a plurality of filter holes which are arranged at intervals; the frame body is arranged on the filter cover and is provided with a mounting rod arranged in the filter cover, and a plurality of limiting strips extending along the vertical direction are arranged on the mounting rod at intervals; the cleaning mechanism is movably arranged on the mounting rod and comprises a push plate piece and a connecting rod assembly, one end of the connecting rod assembly is connected with the push plate piece, the other end of the connecting rod assembly is connected with a transmission piece, the transmission piece is sleeved outside the mounting rod and is provided with a driving assembly for pushing the transmission piece to reciprocate along the vertical direction, and a wedge-shaped structure matched with each other is arranged between the transmission piece and the upper end of the limiting strip; when the driving component drives the transmission piece to move upwards, the connecting rod component drives the push plate piece to extend out of the filtering hole in the radial direction, and when the transmission piece moves to the upper end of the limiting strip, the wedge-shaped structure drives the transmission piece to move downwards in an inclined mode, so that the push plate piece can retract in the radial direction and deflect for a certain angle.

The self-cleaning device for the water pump provided by the embodiment of the utility model has at least the following beneficial effects: when the device is used, the driving assembly drives the transmission part to move upwards, the connecting rod assembly drives the push plate part to extend out of the filtering holes along the radial direction of the mounting rod, so that sundries accumulated in the filtering holes are pushed out, then the transmission part moves to the upper end of the limiting strip, the transmission part gradually inclines downwards to move under the action of the wedge-shaped structure, the transmission part deflects a certain angle to drive the push plate part to rotate to the next filtering hole, cleaning of the inner wall of the filtering cover is facilitated, meanwhile, the transmission part generates descending movement, the connecting rod assembly drives the push plate part to retract and reset along the radial direction of the mounting rod, and finally the movement process is repeated, so that the push plate part can clean the filtering holes on the filtering cover one by one in the movement modes of stretching, shrinking and rotating, manual timing is not required, labor cost is reduced, and water pumps can normally run are facilitated.

Further, the cleaning mechanism further comprises a fixing piece arranged at the upper end of the mounting rod, the connecting rod assembly comprises a first connecting rod and a second connecting rod, the middle parts of the first connecting rod and the second connecting rod are mutually pivoted, one end of the first connecting rod is rotationally connected with the transmission piece, the other end of the first connecting rod is rotationally connected with the pusher piece, one end of the second connecting rod is rotationally connected with the fixing piece, and the other end of the second connecting rod is slidably connected with the pusher piece.

Further, the push plate member is provided with a sliding groove which is arranged along the vertical extension, and the other end of the second connecting rod is provided with a sliding block which is matched with the sliding groove.

Further, an elastic piece is arranged between the fixing piece and the transmission piece.

Further, the drive assembly includes drive sleeve and lift cover, the drive sleeve rotates to be located the installation pole, the lift cover has the first driving surface that the spiral risees and the second driving surface that the spiral descends, the drive sleeve is equipped with the orientation the drive piece of installation pole, when the drive sleeve rotates with first time needle direction, the drive piece can the butt in first driving surface or the second driving surface, the lift cover is equipped with first rectangular piece, the driving medium is equipped with the second rectangular piece, first rectangular piece with second rectangular piece all can with spacing sliding fit.

Further, the wedge-shaped structure comprises a first inclined plane and a second inclined plane which are matched with each other, the first inclined plane is arranged at the upper end of the limiting strip, the second inclined plane is arranged at the lower end of the second long strip, and a third inclined plane matched with the second inclined plane is arranged at the upper end of the first long strip.

Further, the filter cover comprises a scraping frame, a scraping plate which is abutted against the outer wall of the filter cover is arranged on the scraping frame, the frame body further comprises a collecting cover sleeved outside the filter cover, the driving sleeve is in transmission fit with the scraping frame, and when the driving sleeve rotates in the second clockwise direction, the driving sleeve drives the scraping plate to rotate along the circumferential direction of the filter cover.

Further, the scraping frame further comprises a ratchet wheel rotatably arranged on the mounting rod, the driving sleeve is movably provided with a pawl part, and when the driving sleeve rotates along the second clockwise direction, the pawl part is matched with the ratchet wheel in a clamping way so as to drive the scraping frame to rotate.

Further, the support body still includes the clamp assembly, the clamp assembly includes two clamp blocks and two arc poles, two clamp blocks slide set up in collect the cover, two the one end of arc pole is connected respectively and is corresponded clamp block, two be equipped with the application of force piece between the arc pole, the application of force piece is used for order about two clamp block press from both sides tightly in the outer wall of filter mantle.

Further, the collecting cover is provided with a waist-shaped hole extending along the radial direction of the mounting rod, and the clamping block is connected with the waist-shaped hole in a sliding mode through a bolt assembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a self-cleaning mechanism of a water pump according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the embodiment of FIG. 1;

FIG. 3 is a schematic view of the scraping frame and the driving sleeve in FIG. 2;

FIG. 4 is a schematic view of a part of the lifting sleeve, mounting rod and driving member shown in FIG. 1;

fig. 5 is a schematic diagram of the structure at a in fig. 4.

In the figure: the filter cartridge 100, the filter hole 110, the frame body 200, the mounting rod 210, the limit bar 211, the collection cap 220, the waist-shaped hole 221, the clamping assembly 230, the clamping block 231, the arc-shaped rod 232, the push plate 300, the chute 301, the link assembly 310, the first link 311, the second link 312, the transmission member 320, the second long bar 321, the fixing member 330, the driving assembly 400, the driving sleeve 410, the driving block 411, the pawl portion 412, the lifting sleeve 420, the first long bar 421, the first driving surface 422, the second driving surface 423, the wedge-shaped structure 500, the first inclined surface 510, the second inclined surface 520, the third inclined surface 530, the scraping frame 600, the scraping plate 610, and the ratchet 620.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "inner", "front", "rear", "left", "right", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 5, a self-cleaning device of a water pump, comprising: filter housing 100, frame 200, and cleaning mechanism. The filter cover 100 is circumferentially provided with a plurality of filter holes 110 which are arranged at intervals; the frame body 200 is arranged on the filter cover 100, the frame body 200 is provided with a mounting rod 210 which is arranged in the filter cover 100, and a plurality of limiting strips 211 which extend along the vertical direction are arranged on the mounting rod 210 at intervals; the cleaning mechanism is movably arranged on the mounting rod 210 and comprises a push plate piece 300 and a connecting rod assembly 310, one end of the connecting rod assembly 310 is connected with the push plate piece 300, the other end of the connecting rod assembly 310 is connected with a transmission piece 320, the transmission piece 320 is sleeved outside the mounting rod 210, the transmission piece 320 is provided with a driving assembly 400 for pushing the transmission piece 400 to reciprocate along the vertical direction, and a wedge-shaped structure 500 which is matched with the transmission piece 320 is arranged between the upper ends of the limit strips 211; when the driving assembly 400 drives the driving member 320 to move upward, the link assembly 310 drives the pusher member 300 to radially extend out of the filtering hole 110, and when the driving member 320 moves to the upper end of the limiting bar 211, the wedge-shaped structure 500 drives the driving member 320 to move obliquely downward, so that the pusher member 300 can radially retract and deflect a certain angle.

When the self-cleaning device for the water pump with the structure is used, the driving assembly 400 drives the transmission piece 320 to move upwards, the connecting rod assembly 310 drives the push-plate piece 300 to extend out of the filter holes 110 along the radial direction of the mounting rod 210, so that sundries accumulated in the filter holes 110 are pushed out, then the transmission piece 320 moves to the upper end of the limiting strip 211, the transmission piece 320 gradually inclines downwards under the action of the wedge-shaped structure 500, the transmission piece 320 deflects a certain angle to drive the push-plate piece 300 to rotate to the next filter hole 110, cleaning of the inner wall of the filter cover 100 is facilitated, meanwhile, the transmission piece 320 moves downwards, the connecting rod assembly 310 drives the push-plate piece 300 to retract and reset along the radial direction of the mounting rod 210, and finally the moving process is repeated, so that the push-plate piece 300 can clean the filter holes 110 on the filter cover 100 one by one in an extending, contracting and rotating mode without manual timing cleaning of sundries, the cost reduction is facilitated, and the water pump can normally run is facilitated.

It can be appreciated that, in order to make the movement of the push plate member 300 smoother, the area of the filtering holes 110 may be larger than that of the push plate member 300, or the stroke of the push plate member 300 extending out of the filtering holes 110 may be controlled, so as to avoid the interference phenomenon of the movement of the push plate member 300.

Referring to fig. 1 and 2, further, the cleaning mechanism further includes a fixing member 330 disposed at an upper end of the mounting rod 210, the link assembly 310 includes a first link 311 and a second link 312 pivotally connected to each other at a middle portion, one end of the first link 311 is rotatably connected to the driving member 320, the other end of the first link 311 is rotatably connected to the push plate member 300, one end of the second link 312 is rotatably connected to the fixing member 330, and the other end of the second link 312 is slidably connected to the push plate member 300. Specifically, when the transmission member 320 moves upward, one end of the second link 312 moves upward relative to the pusher member 300, so that the angle between the first link 311 and the second link 312 is reduced to achieve the stretching effect, thereby driving the pusher member 300 to move toward one side of the filter hole 110, and finally pushing the sundries out of the filter hole 110 by the pusher member 300 to achieve the cleaning effect. Similarly, when the transmission member 320 moves downward, the included angle between the first link 311 and the second link 312 becomes larger to achieve the contraction effect, so that the pusher member 300 can be rotated to the next filtering hole 110 for cleaning. Wherein, linkage is performed by adopting the connecting rod assembly 310, which is favorable for improving the running fluency of the cleaning mechanism, so that the structure of the cleaning mechanism is more compact.

Referring to fig. 1 and 2, further, in order to guide and limit the second link 312 and improve the moving flow of the second link 312, the push plate member 300 is provided with a sliding slot 301 extending vertically, and the other end of the second link 312 is provided with a sliding block that cooperates with the sliding slot 301. In order to facilitate the assembly and disassembly of the second link 312, one end of the sliding chute 301 may penetrate through the push plate 300, so that the sliding block may be conveniently inserted into the push plate 300 from one end of the sliding chute 301.

Further, in order to facilitate the quick descent of the transmission member 320, thereby accelerating the link assembly 310 to drive the pusher member 300 to perform the retracting motion, an elastic member is disposed between the fixing member 330 and the transmission member 320. It is understood that the elastic member may be a spring or an elastic rope, etc. according to the need, and is not particularly limited.

Referring to fig. 1, 2, 4 and 5, further, the driving assembly 400 includes a driving sleeve 410 and a lifting sleeve 420, the driving sleeve 410 is rotatably disposed on the mounting rod 210, the lifting sleeve 420 has a first driving surface 422 that is spirally raised and a second driving surface 423 that is spirally lowered, the driving sleeve 410 is provided with a driving block 411 that faces the mounting rod 210, when the driving sleeve 410 rotates in the first time needle direction, the driving block 411 can abut against the first driving surface 422 or the second driving surface 423, the lifting sleeve 420 is provided with a first long bar 421, the transmission member 320 is provided with a second long bar 321, and both the first long bar 421 and the second long bar 321 can be slidably matched with the limiting bar 211. Specifically, when the driving sleeve 410 rotates in the first time pin direction, the driving block 411 abuts against the first driving surface 422 that rises in a spiral manner, so as to push the lifting sleeve 420 to abut against the transmission member 320 upwards, and further drive the transmission member 320 to move upwards to stretch the pusher member 300. Similarly, when the driving block 411 abuts against the second driving surface 423 that descends in a spiral manner, the driving block 411 drives the lifting sleeve 420 to move downward to separate from the transmission member 320, so that the subsequent transmission member 320 can move downward to recover the pusher member 300. The first bar 421 and the second bar 321 are slidably engaged with the limiting bar 211, which is beneficial to limiting the rotation of the driving sleeve 410 and the transmission member 320 in the up-down movement, so that the engagement between the driving sleeve 410 and the transmission member 320 is more compact and consistent. It is understood that the first time needle direction may be clockwise or counterclockwise, and the specific direction is not limited.

Referring to fig. 1, 2, 4 and 5, further, the wedge-shaped structure 500 includes a first inclined plane 510 and a second inclined plane 520 that are matched with each other, the first inclined plane 510 is disposed at an upper end of the limit bar 211, the second inclined plane 520 is disposed at a lower end of the second long bar 321, and a third inclined plane 530 matched with the second inclined plane 520 is disposed at an upper end of the first long bar 421. Specifically, when the lifting sleeve 420 pushes the driving member 320 to move to the upper end of the limiting bar 211, due to the cooperation of the third inclined surface 530 and the second inclined surface 520, the upward pushing portion of the first long bar 421 forms a pushing force to move the driving member 320 toward one side of the first inclined surface 510, and then the driving member 320 gradually moves downward in an inclined manner along the first inclined surface 510 under the cooperation of the first inclined surface 510 and the second inclined surface 520, so that the driving member 320 can simultaneously generate a descending and rotating movement mode, and the pushing member 300 can rotate to the next filtering hole 110, and simultaneously the pushing member 300 can retract and reset.

Referring to fig. 1 to 3, further, the filter housing 100 further includes a scraping frame 600, the scraping frame 600 is provided with a scraping plate 610 abutting against an outer wall of the filter housing 100, the frame body 200 further includes a collecting housing 220 sleeved outside the filter housing 100, the driving sleeve 410 is in transmission fit with the scraping frame 600, and when the driving sleeve 410 rotates in the second clockwise direction, the driving sleeve 410 drives the scraping plate 610 to rotate along a circumferential direction of the filter housing 100. Specifically, when the driving sleeve 410 rotates in the first time direction to complete one-round cleaning of the filter housing 100, the driving sleeve 410 rotates in the second time direction, so that the scraping rack 600 is driven to rotate in the second time direction, and the scraped impurities on the outer wall of the filter housing 100 are scraped off by the scraping plate 610, and the scraped impurities can fall onto the collecting housing 220 in a concentrated manner, so that the cleaning and collecting effects of the impurities are achieved.

Referring to fig. 1 to 3, further, the scraping frame 600 further includes a ratchet 620 rotatably disposed on the mounting rod 210, the driving sleeve 410 is movably provided with a pawl portion 412, and when the driving sleeve 410 rotates in the second clockwise direction, the pawl portion 412 is engaged with the ratchet 620 to drive the scraping frame 600 to rotate. Specifically, the pawl portion 412 is provided with a spring to keep the pawl portion 412 in contact with the ratchet 620 at all times. Taking the second clockwise direction as an example, when the driving sleeve 410 rotates anticlockwise, the pawl portion 412 is engaged with the tooth slot of the ratchet 620, so as to drive the scraping frame 600 to rotate anticlockwise, and further scrape the sundries on the outer wall of the filter housing 100 through the scraping plate 610. When the driving sleeve 410 rotates clockwise, the pawl 412 slides along the tooth backs of the ratchet 620 one by one, and the ratchet 620 is not stressed and is in a static state, so that the scraping frame 600 does not rotate clockwise, and the cleaning mechanism is prevented from being affected by the clockwise rotation of the scraping frame 600.

Referring to fig. 1 and 2, further, the frame 200 further includes a clamping assembly 230, the clamping assembly 230 includes two clamping blocks 231 and two arc-shaped rods 232, the two clamping blocks 231 are slidably disposed on the collecting cover 220, one ends of the two arc-shaped rods 232 are respectively connected with the corresponding clamping blocks 231, and a force application member is disposed between the two arc-shaped rods 232 and is used for driving the two clamping blocks 231 to be clamped on the outer wall of the filtering cover 100. Specifically, the two arc rods 232 can form a structure similar to scissors, so that people can apply force to drive one ends of the two arc rods 232 to be close to each other, the other ends of the two arc rods 232 drive the two clamping blocks 231 to be far away from each other, and people can conveniently clamp the two clamping blocks 231 on the filter cover 100, and the frame body 200 and the filter cover 100 can be installed and matched quickly. It will be appreciated that the force application member may be a return spring, so that the elastic force for driving one ends of the two arc rods 232 away from each other is applied by the return spring, so that the other ends of the two arc rods 232 can be close to each other, and finally the two clamping blocks 231 can be always clamped on the outer wall of the filter housing 100. In some embodiments, the force application member may also be a screw disposed at one end of the two arc rods 232, and the opening angle of the two arc rods 232 is locked by the nut, so as to drive the two clamping blocks 231 to be clamped to the outer wall of the filter housing 100 all the time.

Referring to fig. 1 and 2, further, the collecting housing 220 is provided with a waist-shaped hole 221 extending in a radial direction of the mounting bar 210, and the clamping block 231 is slidably coupled to the waist-shaped hole 221 by a bolt assembly. Specifically, the arrangement of the waist-shaped hole 221 can guide and limit the movement of the clamping block 231, and is convenient for people to detach the collecting cover 220 quickly by detaching the bolt assembly, so that the collecting cover 220 can be cleaned conveniently.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A self-cleaning device for a water pump, comprising:

the filter cover (100), the circumference of the filter cover (100) is distributed with a plurality of filter holes (110) which are arranged at intervals;

The filter cover comprises a frame body (200) and a filter cover (100), wherein the frame body (200) is provided with a mounting rod (210) arranged in the filter cover (100), and a plurality of limiting strips (211) extending along the vertical direction are arranged on the mounting rod (210) at intervals;

The cleaning mechanism is movably arranged on the mounting rod (210), the cleaning mechanism comprises a push plate piece (300) and a connecting rod assembly (310), one end of the connecting rod assembly (310) is connected with the push plate piece (300), the other end of the connecting rod assembly (310) is connected with a transmission piece (320), the transmission piece (320) is sleeved outside the mounting rod (210), the transmission piece (320) is provided with a driving assembly (400) for pushing the transmission piece (320) to reciprocate along the vertical direction, and a wedge-shaped structure (500) which is matched with each other is arranged between the transmission piece (320) and the upper end of the limiting strip (211);

When the driving assembly (400) drives the transmission piece (320) to move upwards, the connecting rod assembly (310) drives the push plate piece (300) to radially extend out of the filtering hole (110), and when the transmission piece (320) moves to the upper end of the limiting strip (211), the wedge-shaped structure (500) drives the transmission piece (320) to move downwards in an inclined mode, so that the push plate piece (300) can radially retract and deflect for a certain angle.

2. The self-cleaning device for a water pump according to claim 1, wherein the cleaning mechanism further comprises a fixing member (330) disposed at an upper end of the mounting rod (210), the link assembly (310) comprises a first link (311) and a second link (312) pivotally connected to each other at a middle portion, one end of the first link (311) is rotatably connected to the transmission member (320), the other end of the first link (311) is rotatably connected to the push plate member (300), one end of the second link (312) is rotatably connected to the fixing member (330), and the other end of the second link (312) is slidably connected to the push plate member (300).

3. A self-cleaning device for a water pump according to claim 2, wherein the push plate member (300) is provided with a chute (301) extending vertically, and the other end of the second connecting rod (312) is provided with a sliding block cooperating with the chute (301).

4. A self-cleaning device for a water pump according to claim 2, characterized in that an elastic element is arranged between the fixing element (330) and the transmission element (320).

5. A water pump self-cleaning device according to claim 1, characterized in that the driving assembly (400) comprises a driving sleeve (410) and a lifting sleeve (420), the driving sleeve (410) is rotationally arranged on the mounting rod (210), the lifting sleeve (420) is provided with a first spiral-lifting driving surface (422) and a second spiral-lifting driving surface (423), the driving sleeve (410) is provided with a driving block (411) facing the mounting rod (210), when the driving sleeve (410) rotates in a first time needle direction, the driving block (411) can be abutted to the first driving surface (422) or the second driving surface (423), the lifting sleeve (420) is provided with a first long bar (421), the transmission piece (320) is provided with a second long bar (321), and the first long bar (421) and the second long bar (321) can be in sliding fit with the limiting bar (211).

6. The self-cleaning device for the water pump according to claim 5, wherein the wedge-shaped structure (500) comprises a first inclined surface (510) and a second inclined surface (520) which are mutually matched, the first inclined surface (510) is arranged at the upper end of the limiting strip (211), the second inclined surface (520) is arranged at the lower end of the second long strip block (321), and a third inclined surface (530) which is matched with the second inclined surface (520) is arranged at the upper end of the first long strip block (421).

7. The self-cleaning device for the water pump according to claim 5, further comprising a scraping frame (600), wherein the scraping frame (600) is provided with a scraping plate (610) abutted against the outer wall of the filter cover (100), the frame body (200) further comprises a collecting cover (220) sleeved outside the filter cover (100), the driving sleeve (410) is in transmission fit with the scraping frame (600), and when the driving sleeve (410) rotates in a second clockwise direction, the driving sleeve (410) drives the scraping plate (610) to rotate along the circumferential direction of the filter cover (100).

8. The self-cleaning device for the water pump according to claim 7, wherein the scraping frame (600) further comprises a ratchet wheel (620) rotatably arranged on the mounting rod (210), the driving sleeve (410) is movably provided with a pawl portion (412), and when the driving sleeve (410) rotates in the second clockwise direction, the pawl portion (412) is in clamping fit with the ratchet wheel (620) to drive the scraping frame (600) to rotate.

9. The self-cleaning device for the water pump according to claim 7, wherein the frame body (200) further comprises a clamping assembly (230), the clamping assembly (230) comprises two clamping blocks (231) and two arc-shaped rods (232), the two clamping blocks (231) are slidably arranged on the collecting cover (220), one ends of the two arc-shaped rods (232) are respectively connected with the corresponding clamping blocks (231), and a force application member is arranged between the two arc-shaped rods (232) and is used for driving the two clamping blocks (231) to be clamped on the outer wall of the filtering cover (100).

10. A self-cleaning device for a water pump according to claim 9, characterized in that said collecting hood (220) is provided with a waist-shaped hole (221) extending in the radial direction of said mounting bar (210), said clamping block (231) being slidingly connected to said waist-shaped hole (221) by means of a bolt assembly.