Axial flow pump with automatic impeller cleaning

Abstract

The present invention relates to the field of axial flow pumps, specifically to an axial flow pump for automatically cleaning impellers, which comprises: a sewage discharge section, wherein a water outlet valve and a sewage discharge valve are respectively arranged on the horizontal pipes of the sewage discharge section and the water outlet section; a box body, which is arranged on the water inlet section, and a rotating shaft is vertically and rotatably arranged on the inner wall of the box body; a brush mechanism, which is arranged on the rotating shaft and is located in the box body; and a state adjustment mechanism, which is arranged on the middle section, and the state adjustment mechanism drives the water outlet valve stem and the sewage discharge valve stem to rotate synchronously in the opposite direction, and at the same time drives the rotating shaft to rotate, forming a working state and an impeller cleaning state. In the present invention, the water outlet valve is closed and the sewage discharge valve is opened by extending the telescopic device, and liquid enters from the water inlet section and is discharged from the sewage discharge section, and the bristles rotate into the water inlet section and scrub the rotating impeller surface, and the sewage mixed with the cleaning material is discharged through the sewage discharge section, so as to avoid contamination of the liquid transported by the axial flow pump when the impeller is automatically cleaned.

Description

Technical Field

[0001] The invention relates to the field of axial flow pumps, and in particular to an axial flow pump with an automatic impeller cleaning function. Background Art

[0002] Axial flow pumps are a type of fluid machinery, mainly used to transport liquids with large flow rates and low head requirements. Its working principle is to transfer energy to the fluid through the rotating impeller, so that the fluid gains speed and kinetic energy, thereby achieving liquid transportation. The fluid flows in the impeller parallel to the pump shaft. During the use of the axial flow pump, some substances or impurities in the fluid will adhere to the impeller, causing the impeller to be blocked, thereby causing the performance of the axial flow pump to deteriorate.

[0003] The Chinese patent with the announcement number CN217518871U discloses an axial flow pump that is convenient for cleaning the impeller. By setting a water inlet, a water outlet, a motor device, a rotating shaft and an impeller, it is convenient to drain the clean water. At the same time, a fixed bearing is set on the rotating shaft, and the rotating shaft is rotatably connected with the fixed bearing. The outer wall of the fixed bearing is provided with a connecting rod, which can effectively improve its stability during working rotation and facilitate better and long-term work. By setting a thread groove at one end of the rotating shaft, a thread block is set in the thread groove, and the thread block and the thread groove are detachably threaded and rotatably fixedly connected, and a fixed pull ring is fixedly installed on one side of the mounting seat, by fixing the fixed pull ring, the forward and reverse motors are rotated in the reverse direction, which is convenient for removing the impeller.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the impeller needs to be manually disassembled for cleaning, which causes the axial flow pump to be stopped from time to time to clean the impeller, affecting work efficiency, and the manual disassembly and cleaning of the impeller increases the amount of manual labor. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the impeller of an axial flow pump in the background technology needs to be cleaned manually from time to time, and to provide an axial flow pump with automatic impeller cleaning.

[0006] The technical solution of the present invention is: an axial flow pump for automatically cleaning impellers, comprising an axial flow pump body, the axial flow pump body comprising a water inlet section, a middle section and a water outlet section connected in sequence from bottom to top, and a main shaft passing through the water outlet section and the middle section and inserted into the water inlet section, a plurality of impellers are arranged at the bottom of the main shaft, and a mounting seat is arranged at the bottom of the middle section; and further comprising:

[0007] The sewage section is arranged at the top of the middle section and shares a vertical pipeline with the water outlet section. The sewage section and the water outlet section have rounded corners at the top and extend a horizontal pipe to both sides. The sewage section and the water outlet section are respectively provided with a water outlet valve and a sewage valve on the horizontal pipes. The water outlet valve and the sewage valve respectively extend a water outlet valve stem and a sewage valve stem vertically downward.

[0008] A box body is arranged on the water entry section, and a rotating shaft is vertically and rotatably arranged on the inner wall of the box body, and the rotating shaft extends out of the box body;

[0009] The brush mechanism is arranged on the rotating shaft and is located inside the box body;

[0010] And a state adjustment mechanism is arranged on the middle section. The state adjustment mechanism drives the water outlet valve stem and the sewage discharge valve stem to rotate synchronously in opposite directions, and at the same time drives the rotating shaft to rotate, forming a working state and an impeller cleaning state.

[0011] Preferably, in the working state, the water outlet valve is opened, the sewage valve is closed, the liquid enters from the water inlet section and is discharged from the water outlet section, and the brush mechanism is located in the box body; in the impeller cleaning state, the spindle speed is reduced, the water outlet valve is closed, the sewage valve is opened, the liquid enters from the water inlet section and is discharged from the sewage discharge section, and the brush mechanism rotates into the water inlet section and brushes the rotating impeller surface.

[0012] Preferably, the brush mechanism includes a U-shaped frame arranged on a rotating shaft, and a plurality of bristles arranged on the upper and lower inner walls of the U-shaped frame, and the bristles are arranged in two rows; the side of the U-shaped frame away from the rotating shaft is an open side, and when the impeller is in a cleaning state, the U-shaped frame rotates into the water entry section, and the upper and lower horizontal sections of the U-shaped frame are respectively located on the upper and lower sides of the impeller, and the bristles are in contact with the upper and lower surfaces of the impeller.

[0013] Preferably, the state adjustment mechanism includes a movable frame slidably arranged on the outer wall of the middle section, a water path conversion component arranged on the movable frame for driving the water outlet valve stem and the sewage valve stem to rotate synchronously and in the opposite direction, and a brush position conversion component arranged on the movable frame for driving the rotating shaft to rotate.

[0014] Preferably, a fixed plate is arranged on the outer wall of the middle section, a slide rail is arranged in the movable frame, the slide rail is slidably matched with the fixed plate, a telescopic device is arranged on the fixed plate, and the telescopic device drives the movable frame to move.

[0015] Preferably, the water channel conversion assembly includes a gear a arranged on the water outlet valve stem, a gear b arranged on the sewage valve stem, and a rack a and a rack b arranged on both sides of the movable frame, the rack a and the gear a are meshed, and the rack b and the gear b are meshed, and during the movement of the movable frame, the gear a and the gear b rotate in opposite directions.

[0016] Preferably, the brush position conversion assembly includes a gear c arranged on the rotating shaft, a support frame arranged on the moving frame, and a rack c arranged on the support frame, and the rack c is meshed with the gear c.

[0017] Preferably, the box body has an opening on one side away from the water entry section, and a sealing cover is provided on the opening.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The telescopic device extends, the main shaft speed decreases, the water outlet valve is closed, the sewage valve is opened, the liquid enters from the water inlet section and is discharged from the sewage discharge section, the bristles rotate into the water inlet section and scrub the rotating impeller surface, the impeller contacts and rubs against the bristles during rotation, and foreign matter attached to the impeller surface and the bristles is removed. There is no need to disassemble the impeller for manual cleaning, but the impeller cleaning is completed automatically, which is more convenient to use, improves the equipment use efficiency, and reduces the labor intensity;

[0020] During the automatic impeller cleaning process, the sewage mixed with the cleaning materials is discharged through the sewage discharge section to avoid contamination of the liquid delivered by the axial flow pump during the automatic impeller cleaning. When the bristles need to be cleaned, just stop the axial flow pump and open the sealing cover to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure after removing the mounting base;

[0023] Figure 3 for Figure 2 Schematic diagram of the internal structure of the middle water entry section;

[0024] Figure 4 for Figure 2 Schematic diagram of the internal structure of the middle water outlet section;

[0025] Figure 5 for Figure 3 A is an enlarged schematic diagram.

[0026] Figure numerals: 1. water inlet section; 2. middle section; 3. water outlet section; 4. mounting seat; 5. main shaft; 6. impeller; 7. sewage discharge section; 8. water outlet valve; 9. sewage discharge valve; 10. water outlet valve stem; 11. sewage discharge valve stem; 12. gear a; 13. gear b; 14. box body; 15. sealing cover plate; 16. rotating shaft; 17. U-shaped frame; 18. brush; 19. fixed plate; 20. slide rail; 21. rack a; 22. rack b; 23. telescopic device; 24. support frame; 25. rack c; 26. gear c; 27. moving frame. DETAILED DESCRIPTION

[0027] Embodiment 1, as Figure 1-Figure 3As shown, an axial flow pump for automatically cleaning impellers proposed by the present invention comprises an axial flow pump body, the axial flow pump body comprises a water inlet section 1, a middle section 2 and a water outlet section 3 connected in sequence from bottom to top, and a main shaft 5 inserted into the water inlet section 1 through the water outlet section 3 and the middle section 2, a plurality of impellers 6 are arranged at the bottom of the main shaft 5, the impellers 6 are located in the water inlet section 1, the liquid level needs to be higher than the impellers 6, a mounting seat 4 is arranged at the bottom of the middle section 2, the entire axial flow pump is installed and fixed by the mounting seat 4, and a plurality of vertical fixing holes are arranged on the mounting seat 4 along the circumferential direction; the water inlet section 1, the middle section 2 and the water outlet section 3 are connected by flanges, and flanges are arranged at the bottom of the water inlet section 1 and the water outlet end of the water outlet section 3, the bottom flange of the water inlet section 1 can be connected to the mounting platform, and the water outlet end flange of the water outlet section 3 is used to connect with other guide pipelines; and also includes:

[0028] The sewage section 7 is arranged at the top of the middle section 2 and shares a vertical pipeline with the water outlet section 3. The sewage section 7 and the water outlet section 3 have rounded transitions at the top and extend a horizontal pipe to both sides. The sewage section 7 and the water outlet section 3 are respectively provided with a water outlet valve 8 and a sewage valve 9 on the horizontal pipes. The water outlet valve 8 and the sewage valve 9 respectively extend a water outlet valve stem 10 and a sewage valve stem 11 vertically downward.

[0029] The box body 14 is arranged on the water entry section 1, and a rotating shaft 16 is vertically and rotatably arranged on the inner wall of the box body 14, and the rotating shaft 16 extends out of the box body 14; the box body 14 is opened on one side away from the water entry section 1, and a sealing cover plate 15 is arranged on the opening; the bristles 18 in the box body 14 can be quickly cleaned by opening the sealing cover plate 15, and the cleaning of the bristles 18 is simple and convenient, and only needs to hold the bristles 18 with a cloth and move along the length direction thereof; in an optional embodiment, the sealing cover plate 15 and the box body 14 are connected by a plurality of bolts;

[0030] The brush mechanism is arranged on the rotating shaft 16 and is located in the box body 14;

[0031] And a state adjustment mechanism is arranged on the middle section 2, the state adjustment mechanism drives the water outlet valve stem 10 and the sewage valve stem 11 to rotate synchronously in the opposite direction, and at the same time drives the rotating shaft 16 to rotate, forming a working state and an impeller cleaning state. In the working state, the water outlet valve 8 is opened, the sewage valve 9 is closed, the liquid enters from the water inlet section 1 and is discharged from the water outlet section 3, and the brush mechanism is located in the box body 14; in the impeller cleaning state, the main shaft 5 speed is reduced, the water outlet valve 8 is closed, the sewage valve 9 is opened, the liquid enters from the water inlet section 1 and is discharged from the sewage discharge section 7, and the brush mechanism rotates into the water inlet section 1 and brushes the surface of the rotating impeller 6.

[0032] Embodiment 2, as Figure 5 As shown, the present invention proposes an axial flow pump for automatically cleaning an impeller. Compared with the first embodiment, this embodiment introduces the structure of the brush mechanism in detail.

[0033] The brush mechanism includes a U-shaped frame 17 arranged on the rotating shaft 16, and a plurality of bristles 18 arranged on the upper and lower inner walls of the U-shaped frame 17. The bristles 18 are arranged in two rows, the top of one row is connected to the top inner wall of the U-shaped frame 17, and its bottom is suspended in the air, and the bottom of the other row of bristles 18 is connected to the bottom inner wall of the U-shaped frame 17, and its top is suspended in the air; the side of the U-shaped frame 17 away from the rotating shaft 16 is an open side, and when the impeller is in the cleaning state, the U-shaped frame 17 rotates into the water inlet section 1, and the upper and lower horizontal sections of the U-shaped frame 17 are respectively located on the upper and lower sides of the impeller 6, and the bristles 18 are in contact with the upper and lower surfaces of the impeller 6, so that the impeller 6 can be brushed when the impeller 6 rotates.

[0034] Embodiment three, as Figure 2-Figure 4 As shown, the present invention proposes an axial flow pump for automatically cleaning an impeller. Compared with the first or second embodiment, this embodiment introduces the structure of the state adjustment mechanism in detail.

[0035] The state adjustment mechanism includes a moving frame 27 slidably arranged on the outer wall of the middle section 2, a waterway conversion assembly arranged on the moving frame 27 for driving the water outlet valve stem 10 and the sewage valve stem 11 to rotate synchronously and in opposite directions, and a brush position conversion assembly arranged on the moving frame 27 for driving the rotating shaft 16 to rotate. A fixed plate 19 is arranged on the outer wall of the middle section 2, and a slide rail 20 is arranged in the moving frame 27. The slide rail 20 is slidably matched with the fixed plate 19. A telescopic device 23 is arranged on the fixed plate 19. The telescopic device 23 drives the moving frame 27 to move. In an optional embodiment, two slide rails 20 are arranged in parallel, the two slide rails 20 are symmetrical about the middle section 2, and the two slide rails 20 are respectively connected to the two sides of the fixed plate 19 for sliding.

[0036] Furthermore, the water channel conversion component includes a gear a12 arranged on the water outlet valve stem 10, a gear b13 arranged on the sewage valve stem 11, and a rack a21 and a rack b22 arranged on both sides of the movable frame 27. The rack a21 is meshed with the gear a12, and the rack b22 is meshed with the gear b13. During the movement of the movable frame 27, the gear a12 and the gear b13 rotate in opposite directions; the telescopic device 23 drives the movable frame 27 to move, and the gear a12 and the gear b13 rotate in opposite directions to realize the opening or closing of the water outlet valve 8 and the sewage valve 9. Only one of the water outlet valve 8 and the sewage valve 9 is opened at the same time to realize the switching between the working state and the impeller cleaning state; the telescopic device 23 is controlled by a separate control system, and the time interval for automatic impeller cleaning can be set by the control system.

[0037] Furthermore, the brush position conversion assembly includes a gear c26 disposed on the rotating shaft 16, a support frame 24 disposed on the moving frame 27, and a rack c25 disposed on the support frame 24, and the rack c25 is meshed with the gear c26.

[0038] In summary, when the present invention is in use, it is divided into two states, namely, working state and impeller cleaning state. In the working state, the telescopic device 23 is retracted, the water outlet valve 8 is opened, the sewage valve 9 is closed, the liquid enters from the water inlet section 1 and is discharged from the water outlet section 3, and the bristles 18 are located in the box body 14; in the impeller cleaning state, the telescopic device 23 is extended, the rotation speed of the main shaft 5 is reduced, the water outlet valve 8 is closed, the sewage valve 9 is opened, the liquid enters from the water inlet section 1 and is discharged from the sewage discharge section 7, the bristles 18 rotate into the water inlet section 1 and scrub the surface of the rotating impeller 6, and the impeller 6 contacts and rubs against the bristles 18 during rotation, and foreign matter attached to the surface of the impeller 6 and the bristles 18 is discharged, and the sewage mixed with the cleaning material is discharged through the sewage discharge section 7, so as to avoid contamination of the liquid transported by the axial flow pump when the impeller 6 is automatically cleaned. When the bristles 18 need to be cleaned, it is only necessary to stop the axial flow pump and open the sealing cover plate 15 to operate.

[0039] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An axial flow pump with an automatic impeller cleaning device, comprising an axial flow pump body, the axial flow pump body comprising a water inlet section (1), an intermediate section (2) and a water outlet section (3) connected in sequence from bottom to top, and a main shaft (5) passing through the water outlet section (3) and the intermediate section (2) and inserted into the water inlet section (1), a plurality of impellers (6) being arranged at the bottom of the main shaft (5), and a mounting seat (4) being arranged at the bottom of the intermediate section (2); characterized in that: Also includes: The sewage discharge section (7) is arranged at the top of the middle section (2) and shares a vertical pipeline with the water outlet section (3). The sewage discharge section (7) and the water outlet section (3) have rounded corners at the top and extend a horizontal pipe to both sides. A water outlet valve (8) and a sewage discharge valve (9) are respectively arranged on the horizontal pipes of the sewage discharge section (7) and the water outlet section (3). The water outlet valve (8) and the sewage discharge valve (9) respectively extend a water outlet valve stem (10) and a sewage discharge valve stem (11) vertically downward. A box body (14) is arranged on the water entry section (1), and a rotating shaft (16) is vertically and rotatably arranged on the inner wall of the box body (14), and the rotating shaft (16) extends out of the box body (14); A brush mechanism is arranged on the rotating shaft (16) and is located inside the box body (14); and a state adjustment mechanism, which is arranged on the middle section (2), and drives the water outlet valve stem (10) and the sewage discharge valve stem (11) to rotate synchronously in opposite directions, and simultaneously drives the rotating shaft (16) to rotate, thereby forming a working state and an impeller cleaning state.

2. The axial flow pump with automatic impeller cleaning according to claim 1, characterized in that: In the working state, the water outlet valve (8) is opened, the sewage discharge valve (9) is closed, liquid enters from the water inlet section (1) and is discharged from the water outlet section (3), and the brush mechanism is located in the box body (14); in the impeller cleaning state, the rotation speed of the main shaft (5) is reduced, the water outlet valve (8) is closed, the sewage discharge valve (9) is opened, liquid enters from the water inlet section (1) and is discharged from the sewage discharge section (7), and the brush mechanism rotates into the water inlet section (1) and brushes the surface of the rotating impeller (6).

3. The axial flow pump with automatic impeller cleaning according to claim 1, characterized in that: The brush mechanism comprises a U-shaped frame (17) arranged on a rotating shaft (16), and a plurality of bristles (18) arranged on upper and lower inner walls of the U-shaped frame (17), wherein the bristles (18) are arranged in two rows; a side of the U-shaped frame (17) away from the rotating shaft (16) is an open side; in an impeller cleaning state, the U-shaped frame (17) rotates into the water entry section (1), and the upper and lower horizontal sections of the U-shaped frame (17) are respectively located on the upper and lower sides of the impeller (6), and the bristles (18) are in contact with both the upper and lower surfaces of the impeller (6).

4. The axial flow pump with automatic impeller cleaning according to claim 3, characterized in that: The state adjustment mechanism comprises a moving frame (27) slidably arranged on the outer wall of the middle section (2), a water channel conversion component arranged on the moving frame (27) for driving the water outlet valve stem (10) and the sewage discharge valve stem (11) to rotate synchronously and in opposite directions, and a brush position conversion component arranged on the moving frame (27) for driving the rotating shaft (16) to rotate.

5. The axial flow pump with automatic impeller cleaning according to claim 4, characterized in that: A fixed plate (19) is arranged on the outer wall of the middle section (2), a slide rail (20) is arranged in the movable frame (27), the slide rail (20) and the fixed plate (19) are slidably matched, a telescopic device (23) is arranged on the fixed plate (19), and the telescopic device (23) drives the movable frame (27) to move.

6. The axial flow pump with automatic impeller cleaning according to claim 4, characterized in that: The water channel conversion assembly comprises a gear a (12) arranged on a water outlet valve stem (10), a gear b (13) arranged on a sewage discharge valve stem (11), and a rack a (21) and a rack b (22) arranged on both sides of a moving frame (27). The rack a (21) and the gear a (12) are meshed, and the rack b (22) and the gear b (13) are meshed. When the moving frame (27) moves, the gear a (12) and the gear b (13) rotate in opposite directions.

7. The axial flow pump with automatic impeller cleaning according to claim 4, characterized in that: The brush position conversion assembly comprises a gear c (26) arranged on the rotating shaft (16), a support frame (24) arranged on the moving frame (27), and a rack c (25) arranged on the support frame (24), wherein the rack c (25) and the gear c (26) are meshed.

8. The axial flow pump with automatic impeller cleaning according to claim 1, characterized in that: The box body (14) has an opening on one side away from the water inlet section (1), and a sealing cover plate (15) is provided on the opening.

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