Filtering device for water inlet of water pump

Abstract

The utility model discloses a filtering device for water inlet of a water pump, which comprises a filtering box, two ends of the filtering box are respectively communicated with a water outlet and a water inlet, the water outlet is provided with a connecting flange, the water inlet is provided with a water inlet grid, one side, close to the water inlet, of the filtering box is provided with two groups of fixing blocks, and the fixing blocks are connected with the water inlet grid. A positioning sliding column is arranged between the two fixing blocks, a positioning sliding sleeve is arranged on the positioning sliding column in a sliding mode, a cleaning transverse plate is arranged on the positioning sliding sleeve, a cleaning rod corresponding to the water inlet grating is arranged on the cleaning transverse plate, two sets of matching blocks are arranged on the filtering box, and a driving screw is rotationally arranged between the two matching blocks; the driving screw is connected with a threaded sleeve through threads, the threaded sleeve is connected with the cleaning transverse plate, a positioning frame is arranged on the filtering box, and a driving motor connected with the driving screw is arranged on the positioning frame. Compared with the prior art, the water pumping device has the advantages that the water inlet can be cleaned conveniently, and the water pumping efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump filtering devices, in particular to a filtering device for water pump inlet water. Background Technique

[0002] A water pump is a machine that transports liquids or increases the pressure of liquids. It transmits the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. It is mainly used to transport liquids including water, oil, acid-base liquids, emulsions, suspension liquids, and liquid metals, etc. It can also transport liquid-gas mixtures and liquids containing suspended solids. The technical parameters of water pump performance include flow rate, suction lift, head, shaft power, water power, efficiency, etc. According to different working principles, it can be divided into types such as positive displacement water pumps and vane pumps. A positive displacement pump uses the change in the volume of its working chamber to transfer energy, and a vane pump uses the interaction between the rotating vane and water to transfer energy. There are types such as centrifugal pumps, axial flow pumps, and mixed flow pumps. When the water pump is working, an inlet filtering device needs to be installed to prevent foreign objects from blocking the water pump.

[0003] Currently, most of the filtering devices for water pump inlet water reduce the debris entering the inside of the water pump by installing a filter screen at the inlet of the water pump. However, when the filter screen is in use, since the impurities on the water inlet side of the filter screen cannot be automatically cleaned, when the impurities block the filter screen, the water intake of the water pump is greatly reduced. At this time, the water inlet needs to be taken out from under the water surface for cleaning, which takes a lot of time for the staff and reduces the pumping efficiency. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a filtering device for water pump inlet water that can automatically clean impurities.

[0005] To solve the above technical problem, the technical solution provided by the utility model is: a filtering device for water pump inlet water, including a filtering box. The two ends of the filtering box are respectively communicated with a water outlet and a water inlet. A connecting flange is provided on the water outlet, and the water outlet is connected to the water pump through the connecting flange. The water inlet is provided with a water inlet grille. A fixing block is provided on one side of the filtering box close to the water inlet. Two groups of fixing blocks are provided. A positioning sliding column is provided between the two fixing blocks. A positioning sliding sleeve is slidably provided on the positioning sliding column. A cleaning cross plate is provided on the positioning sliding sleeve. Cleaning rods corresponding to the water inlet grille are provided on the cleaning cross plate. A matching block is provided on the filtering box. Two groups of matching blocks are provided. A driving screw rod is rotatably provided between the two matching blocks. The driving screw rod is threadedly connected with a threaded sleeve, and the threaded sleeve is connected to the cleaning cross plate. A positioning frame is provided on the filtering box, and a driving motor connected to the driving screw rod is provided on the positioning frame.

[0006] As an improvement, a protection frame is provided on the filtering box. The protection frame is correspondingly arranged with the fixing block and the matching block. A notch is provided on one side of the protection frame. The cleaning cross plate is slidably connected with the protection frame.

[0007] As an improvement, a plurality of filter nets are movably connected inside the filter box. An installation plate is provided on the filter net, and a locking mechanism corresponding to the installation plate is provided on the filter box.

[0008] As an improvement, the locking mechanism includes a rotating seat provided on the filter box. A rotating arm is rotatably provided on the rotating seat. The rotating arm is of an L-shaped structure. A limiting screw rod is connected to the rotating arm by a thread. A limiting block is provided at the lower end of the limiting screw rod, and a knob is provided at the upper end of the limiting screw rod.

[0009] As an improvement, a positioning groove corresponding to the limiting block is provided on the installation plate, and the inner diameter of the positioning groove is larger than the diameter of the limiting block.

[0010] As an improvement, the limiting screw rod is threadedly connected with a hand-rotating nut. The cross-section of the hand-rotating nut is of a circular structure, and a plurality of anti-slip strips are equidistantly arranged on the hand-rotating nut along the circumferential direction.

[0011] As an improvement, positioning slide rails are provided inside the filter box. The positioning slide rails are symmetrically arranged and are slidably connected with the filter nets.

[0012] As an improvement, support frames are provided at the lower end of the filter box. The support frames are symmetrically arranged. A support bottom plate is provided at the lower end of the support frames. The support bottom plate is of a square structure, and the four corners of the support bottom plate are of rounded corner structures.

[0013] The advantages of the present utility model compared with the prior art are as follows:

[0014] 1. The driving motor drives the driving screw rod to rotate synchronously, so that the threaded sleeve drives the cleaning cross plate to move, and the cleaning rod cleans the sundries on the water inlet grille, avoiding the blockage of the water inlet grille and the water inlet, ensuring the normal water inlet of the water pump, and the water inlet can be cleaned without taking out the filtering device of the present utility model, reducing the workload of the staff and improving the pumping efficiency;

[0015] 2. The cooperation of a plurality of filter nets and the corresponding locking mechanism facilitates replacement and fixation, further filters the water body, reduces the impurities entering the water pump, prolongs the service life of the water pump, and ensures the pumping efficiency. Description of the Drawings

[0016] Figure 1 is a schematic structural view of a filtering device for water pump inlet of the present utility model Figure One 。

[0017] Figure 2 is a schematic structural view of a filtering device for water pump inlet of the present utility model Figure Two 。

[0018] Figure 3 is a schematic structural view of a filtering device for water pump inlet of the present utility model Figure Three 。

[0019] Figure 4 It is a structural schematic diagram of a filtering device for the water inlet of a water pump of the present utility model. Figure Four 。

[0020] Figure 5 It is an enlarged view of part A of a filtering device for the water inlet of a water pump of the present utility model.

[0021] Figure 6 It is an enlarged view of part B of a filtering device for the water inlet of a water pump of the present utility model.

[0022] Figure 7 It is an enlarged view of part C of a filtering device for the water inlet of a water pump of the present utility model.

[0023] As shown in the figure: 1. Filter box; 2. Water outlet; 3. Water inlet; 4. Connecting flange; 5. Support frame; 6. Support bottom plate; 7. Filter screen; 8. Installation plate; 9. Positioning groove; 10. Rotating seat; 11. Rotating arm; 12. Limit screw; 13. Limit block; 14. Knob; 15. Hand screw nut; 16. Positioning slide rail; 17. Water inlet grille; 18. Protection frame; 19. Fixed block; 20. Positioning slide column; 21. Positioning slide sleeve; 22. Cleaning cross plate; 23. Cleaning rod; 24. Fitting block; 25. Driving screw; 26. Threaded sleeve; 27. Positioning frame; 28. Driving motor. Specific embodiments

[0024] The following further describes the present utility model in detail with reference to the accompanying drawings.

[0025] Combined with the attached Figure 1 To the attached Figure 7, a filtering device for a water pump inlet, including a filtering box 1. The two ends of the filtering box 1 are respectively communicated with a water outlet 2 and a water inlet 3. A connecting flange 4 is provided on the water outlet 2, and the water outlet 2 is connected to the water pump through the connecting flange 4. The water inlet 3 is provided with a water inlet grille 17 to prevent impurities from entering the filtering box 1. A fixing block 19 is provided on one side of the filtering box 1 close to the water inlet 3. Two groups of fixing blocks 19 are provided. A positioning sliding column 20 is arranged between the two fixing blocks 19. A positioning sliding sleeve 21 is slidably arranged on the positioning sliding column 20. A cleaning cross plate 22 is provided on the positioning sliding sleeve 21. A cleaning rod 23 corresponding to the water inlet grille 17 is provided on the cleaning cross plate 22. A matching block 24 is provided on the filtering box 1. Two groups of matching blocks 24 are provided. A driving screw rod 25 is rotatably arranged between the two matching blocks 24. The driving screw rod 25 is threadedly connected with a threaded sleeve 26, and the threaded sleeve 26 is connected to the cleaning cross plate 22. A positioning frame 27 is provided on the filtering box 1. A driving motor 28 connected to the driving screw rod 25 is provided on the positioning frame 27. The driving motor 28 can rotate forward and backward. This is the current prior art. When the driving motor 28 rotates forward, the driving screw rod 25 rotates forward synchronously. At this time, the threaded sleeve 26 moves upward along the axial direction of the driving screw rod 25. The cleaning cross plate 22 drives the cleaning rod 23 to move upward. The positioning sliding sleeve 21 slides upward along the axial direction of the positioning sliding column 20. The cleaning rod 23 pushes the impurities on the water inlet grille 17 out of the water inlet 3. When the driving motor 28 rotates backward, the driving screw rod 25 rotates backward synchronously. At this time, the threaded sleeve 26 moves downward along the axial direction of the driving screw rod 25. The cleaning cross plate 22 drives the cleaning rod 23 to move downward. The positioning sliding sleeve 21 slides downward along the axial direction of the positioning sliding column 20. The cleaning rod 23 pushes the impurities on the water inlet grille 17 out of the water inlet 3, thereby cleaning the water inlet 3. A protective frame 18 is provided on the filtering box 1. The protective frame 18 is correspondingly arranged with the fixing block 19 and the matching block 24. A notch is provided on one side of the protective frame 18. The cleaning cross plate 22 is slidably connected to the protective frame 18 to prevent impurities from affecting the operation of the positioning sliding sleeve 21 and the threaded sleeve 26.

[0026] Combined with the attached Figure 1 to the attached Figure 5, a plurality of filter meshes 7 are movably connected inside the filter box 1. The diameter of the filter holes of the filter meshes 7 gradually decreases from the water inlet 3 to the water outlet 2. A positioning slide rail 16 is provided inside the filter box 1. The positioning slide rails 16 are symmetrically arranged and are slidably connected to the filter meshes 7. An installation plate 8 is provided on the filter meshes 7, and a locking mechanism corresponding to the installation plate 8 is provided on the filter box 1, which facilitates locking and unlocking of the filter meshes 7 and is convenient for replacing the filter meshes 7. The locking mechanism includes a rotating seat 10 provided on the filter box 1. A rotating arm 11 is rotatably provided on the rotating seat 10. The rotating arm 11 is of an L-shaped structure. A limiting screw 12 is threadedly connected to the rotating arm 11. A limiting block 13 is provided at the lower end of the limiting screw 12, and a knob 14 is provided at the upper end of the limiting screw 12. The limiting screw 12 is threadedly connected with a hand-rotating nut 15. The hand-rotating nut 15 locks the position of the limiting screw 12 to prevent the limiting screw 12 from loosening during the operation of the filter box 1. The cross-section of the hand-rotating nut 15 is of a circular structure, and a plurality of anti-slip strips are equidistantly arranged along the circumferential direction of the hand-rotating nut 15. A positioning groove 9 corresponding to the limiting block 13 is provided on the installation plate 8, and the inner diameter of the positioning groove 9 is larger than the diameter of the limiting block 13.

[0027] Combined with the attached Figure 1 to the attached Figure 4 , a support frame 5 is provided at the lower end of the filter box 1. The support frames 5 are symmetrically arranged. A support bottom plate 6 is provided at the lower end of the support frame 5. The support bottom plate 6 is of a square structure, and the four corners of the support bottom plate 6 are all of rounded corner structures.

[0028] When the present utility model is specifically implemented, the filter box 1 is connected to the water pump through the connecting flange 4. The water pump is started, and water flows into the filter box 1 through the water inlet 3. The inlet grille 17 filters the water entering the filter box 1. The filtered water enters the filter box 1, and a plurality of filter meshes 7 inside the filter box 1 filter the water entering the filter box 1 again. The filtered water enters the water pump through the water outlet 2. At this time, the driving motor 28 is started. When the driving motor 28 rotates forward, the driving screw 25 rotates synchronously in the forward direction. At this time, the threaded sleeve 26 moves upward along the axial direction of the driving screw 25. The cleaning cross plate 22 drives the cleaning rod 23 to move upward, and the positioning sliding sleeve 21 slides upward along the axial direction of the positioning sliding column 20. The cleaning rod 23 pushes the impurities on the inlet grille 17 out of the water inlet 3. When the driving motor 28 rotates in reverse, the driving screw 25 rotates synchronously in the reverse direction. At this time, the threaded sleeve 26 moves downward along the axial direction of the driving screw 25. The cleaning cross plate 22 drives the cleaning rod 23 to move downward, and the positioning sliding sleeve 21 slides downward along the axial direction of the positioning sliding column 20. The cleaning rod 23 pushes the impurities on the inlet grille 17 out of the water inlet 3, thereby cleaning the water inlet 3, preventing impurities from blocking the water inlet 3, and ensuring the stable water inlet of the water pump.

[0029] When the filter screen 7 needs to be replaced, turn the knob 14. The limit screw 12 rotates and moves upward along the axial direction. The limit block 13 disengages from the positioning groove 9. At this time, the rotating arm 11 can be rotated to disengage the rotating arm 11 from the mounting plate 8, and the old filter screen 7 can be taken out by pulling the mounting plate 8. During installation, slide the new filter screen 7 along the positioning slide rail 16 and insert it into the filter box 1. Rotate the rotating arm 11 to make the rotating arm 11 cooperate with the mounting plate 8. Reverse-rotate the knob 14, the limit screw 12 rotates in the reverse direction, the limit screw 12 moves downward along the axial direction, the limit block 13 is snapped into the positioning groove 9, and rotate the hand screw nut 15 to lock the position of the limit screw 12, completing the replacement of the filter screen 7.

[0030] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative concept of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A filtering device for the water inlet of a water pump, comprising a filtering box (1). Both ends of the filtering box (1) are respectively communicated with a water outlet (2) and a water inlet (3). A connecting flange (4) is provided on the water outlet (2). The water outlet (2) is connected to the water pump through the connecting flange (4), and the characteristics are as follows: The water inlet (3) is provided with a water inlet grille (17). On one side of the filter box (1) close to the water inlet (3), there are two fixed blocks (19). A positioning slide post (20) is arranged between the two fixed blocks (19). A positioning slide sleeve (21) is slidably arranged on the positioning slide post (20). A cleaning cross plate (22) is arranged on the positioning slide sleeve (21). Cleaning rods (23) corresponding to the water inlet grille (17) are arranged on the cleaning cross plate (22). Two matching blocks (24) are arranged on the filter box (1). A driving screw rod (25) is rotatably arranged between the two matching blocks (24). A threaded sleeve (26) is connected to the driving screw rod (25) through threads. The threaded sleeve (26) is connected to the cleaning cross plate (22). A positioning frame (27) is arranged on the filter box (1). A driving motor (28) connected to the driving screw rod (25) is arranged on the positioning frame (27).

2. The filtering device for water pump inlet according to claim 1, wherein: A protective frame (18) is arranged on the filter box (1). The protective frame (18) is correspondingly arranged with the fixed blocks (19) and the matching blocks (24). A notch is arranged on one side of the protective frame (18). The cleaning cross plate (22) is slidably connected to the protective frame (18).

3. The filtering device for the water inlet of a water pump according to claim 1, wherein: A plurality of filter nets (7) are movably connected in the filter box (1). Mounting plates (8) are arranged on the filter nets (7). A locking mechanism corresponding to the mounting plates (8) is arranged on the filter box (1).

4. A filtering device for water inlet of a water pump according to claim 3, characterized in that: The locking mechanism includes a rotating seat (10) arranged on the filter box (1). A rotating arm (11) is rotatably arranged on the rotating seat (10). The rotating arm (11) is of an L-shaped structure. A limiting screw rod (12) is connected to the rotating arm (11) through threads. A limiting block (13) is arranged at the lower end of the limiting screw rod (12). A knob (14) is arranged at the upper end of the limiting screw rod (12).

5. The filtering device for water pump inlet according to claim 4, characterized in that: Positioning grooves (9) corresponding to the limiting blocks (13) are arranged on the mounting plates (8). The inner diameter of the positioning grooves (9) is larger than the diameter of the limiting blocks (13).

6. The filtering device for water pump inlet according to claim 4, characterized in that: The limiting screw rod (12) is connected with a hand-rotating nut (15) through threads. The cross section of the hand-rotating nut (15) is of a circular structure. A plurality of anti-slip strips are arranged on the hand-rotating nut (15) at equal intervals along the circumferential direction.

7. A filtering device for water inlet of a water pump according to claim 1, characterized in that: Positioning slide rails (16) are arranged in the filter box (1). The positioning slide rails (16) are symmetrically arranged and are slidably connected to the filter nets (7).

8. A filtering device for water inlet of a water pump according to claim 1, characterized in that: Support frames (5) are arranged at the lower end of the filter box (1). The support frames (5) are symmetrically arranged. A support bottom plate (6) is arranged at the lower end of the support frames (5). The support bottom plate (6) is of a square structure, and the four corners of the support bottom plate (6) are of rounded corner structures.

Images