A water pump

Abstract

The present invention discloses a water pump, which comprises a driving motor and a pump housing. One axial end of the pump housing is connected with a water inlet pipe, and the outer periphery of the pump housing is connected with a water outlet pipe. The driving motor is located on the side of the pump housing away from the water inlet pipe. An impeller is rotatably arranged in the pump housing. The impeller comprises a rotating shaft, a fixing plate, a mounting plate, connecting rods and blades. The rotating shaft extends out of the pump housing, and the driving motor is drivingly connected to the rotating shaft. The mounting plate and the fixing plate are arranged in parallel, and connecting rods are connected between the fixing plate and the mounting plate. The rotating shaft passes through the center position of the fixing plate and is fixedly connected to the fixing plate. An adjusting mechanism is installed on the part of the rotating shaft between the fixing plate and the mounting plate, and a plurality of blades are installed on the adjusting mechanism. A water inlet is formed at the middle position of the mounting plate. The present invention can adjust the angle of the blades in the impeller to change the lift of the pump.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and more specifically, to a water pump. Background Art

[0002] Some remote mountainous areas often lack water and electricity. A specific problem with pumping water in remote mountainous areas is the need for electricity. Solar energy is a green and clean energy source. Using solar power generation to drive a water pump to pump water from a low-level water source to a high place for use is a good solution. Due to the complex water use environment in mountainous areas, a water pump may need to supply water to positions at different heights. Currently, the installation angles of the impeller and blades of a water pump are fixed during the production process and cannot be adjusted according to various requirements during actual use, so it cannot meet the applications in mountainous areas. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a water pump.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] The present invention discloses a water pump, including a driving motor and a pump housing. One end of the pump housing in the axial direction is connected with a water inlet pipe, and the outer periphery of the pump housing is connected with a water outlet pipe. The driving motor is located on the side of the pump housing away from the water inlet pipe. An impeller is rotatably arranged in the pump housing. The impeller includes a rotating shaft, a fixing plate, a mounting plate, a connecting rod, and blades. The rotating shaft extends out of the pump housing, and the driving motor is drivingly connected to the rotating shaft. The mounting plate and the fixing plate are arranged in parallel, and a connecting rod is connected between the fixing plate and the mounting plate. The rotating shaft passes through the center position of the fixing plate and is fixedly connected to the fixing plate. A regulating mechanism is installed on the part of the rotating shaft between the fixing plate and the mounting plate. A plurality of blades are installed on the regulating mechanism. An inlet is opened at the middle position of the mounting plate.

[0006] Further, the regulating mechanism includes a mounting sleeve. A first mounting cavity is opened in the mounting sleeve. The inner end of the blade is connected with a central shaft. The central shaft is rotatably arranged on the side wall of the mounting sleeve. The inner end of the central shaft extends into the first mounting cavity and is connected with a transmission bevel gear. A support ring is rotatably arranged in the first mounting cavity. Tooth blocks are arranged on the support ring. The tooth blocks can be engaged with the transmission bevel gear. A first tooth ring is connected to the inner periphery of the support ring. A regulating motor is arranged in the first mounting cavity. The regulating motor is drivingly connected with a first driving gear. The first driving gear can be engaged with the first tooth ring.

[0007] Furthermore, two support rings are provided and are respectively located on the upper and lower sides of the transmission bevel gear. The tooth blocks on the upper support ring are installed on the lower side, and the tooth blocks on the lower support ring are installed on the upper side. The tooth blocks on the upper support ring and the tooth blocks on the lower support ring are arranged staggeredly. A lifting mechanism is further included, and the lifting mechanism can drive the adjusting motor to lift, so that the first driving gear meshes with the first upper tooth ring or the first lower tooth ring respectively.

[0008] Furthermore, clamping blocks are respectively installed on the upper and lower parts of the adjusting motor, and the clamping blocks can be engaged with the first tooth ring.

[0009] Furthermore, the lifting mechanism includes a lead screw motor and a lead screw rotatably arranged in the first installation cavity. The lead screw is arranged along the axial direction of the rotating shaft. The lead screw motor is drivingly connected to the lead screw. A lead screw slider is arranged on the lead screw, and the adjusting motor is installed on the lead screw slider.

[0010] Furthermore, a second installation cavity and an opening are formed in the installation plate. The second installation cavity is communicated with the opening, and the opening is communicated with the water inlet. An adjusting plate is slidably arranged in the opening, and a part of the adjusting plate is located in the water inlet.

[0011] Furthermore, one end of the adjusting plate located in the second installation cavity is connected with a movable block. A guide rail is arranged in the upper part of the second installation cavity. The movable block is slidably connected with the guide rail. A plurality of racks are arranged on the lower part of the movable block. A rotating disc is rotatably arranged in the second installation cavity. The rotating disc is located below the adjusting plate. A spiral groove is formed in the upper part of the rotating disc. The racks are arranged in the spiral groove. A rotating mechanism is arranged in the second installation cavity. The rotating mechanism includes a rotating motor. The rotating motor is drivingly connected with a second driving gear. A second tooth ring is arranged below the rotating disc. The second driving gear meshes with the second tooth ring.

[0012] Furthermore, the adjusting plate is fan-shaped. An installation groove is formed in the side surface of the adjusting plate. A sealing film is connected between the side surfaces of adjacent adjusting plates. The end part of the sealing film is installed in the installation groove.

[0013] Furthermore, a moving frame is arranged in the second installation cavity. A moving block is slidably arranged in the moving frame. The sliding direction of the moving block is the radial direction of the second installation cavity. A first spring is connected to the moving block. The other end of the first spring is connected to the outer side of the moving frame. A plurality of triggers are installed on the side surface of the moving frame.

[0014] The beneficial effects of the present invention are as follows: By adjusting the angle of the blades through the adjusting mechanism, the lift of the pump can be changed, and the operating efficiency of the pump is improved. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a water pump in this embodiment;

[0016] Figure 2 is a sectional view of an impeller in this embodiment;

[0017] Figure 3 is Figure 2 The enlarged schematic view of part A in

[0018] Figure 4 A cross-sectional view of the impeller in this embodiment;

[0019] Figure 5 is Figure 4 Partial enlarged schematic view;

[0020] Figure 6 A cross-sectional view of the mounting plate in this embodiment;

[0021] Figure 7 A sectional view of the mounting plate in this embodiment;

[0022] Figure 8 The installation schematic diagram of the trigger in this embodiment;

[0023] Figure 9 A structural schematic diagram of the adjusting plate in this embodiment.

[0024] Reference numerals: 1. Driving motor; 2. Pump housing; 3. Water inlet pipe; 4. Water outlet pipe; 5. Rotating shaft; 6. Fixed plate; 7. Mounting plate; 8. Connecting rod; 9. Blade; 10. Adjusting mechanism; 11. Water inlet; 12. Adjusting plate; 13. Central shaft; 14. Transmission bevel gear; 15. Mounting sleeve; 16. First mounting cavity; 17. Support seat; 18. Support ring; 19. First toothed ring; 20. Tooth block; 21. Lead screw motor; 22. Lead screw; 23. Lead screw slider; 24. Adjusting motor; 25. First driving gear; 26. Block; 27. Rotating seat; 28. Support shaft; 29. Lifting mechanism; 30. Sealing sleeve; 31. Rotating mechanism; 32. Movable block; 33. Rotating disc; 34. Spiral groove; 35. Second mounting cavity; 36. Opening; 37. Guide rail; 38. Rack; 39. Rotating motor; 40. Second toothed ring; 41. Second driving gear; 42. Moving frame; 43. Moving block; 44. First spring; 45. Trigger; 46. Sealing ring; 47. Mounting groove; 48. Sealing film; 49. Mounting post; 50. Moving post; 51. Second spring. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Such as Figures 1-9As shown in the figure, a water pump includes a driving motor 1 and a pump housing 2. One end of the pump housing 2 in the axial direction is connected to a water inlet pipe 3, and the outer periphery of the pump housing 2 is connected to a water outlet pipe 4. The driving motor 1 is located on the side of the pump housing 2 away from the water inlet pipe 3. An impeller is rotatably arranged in the pump housing 2. The impeller includes a rotating shaft 5, a fixing plate 6, a mounting plate 7, a connecting rod 8, and blades 9. The rotating shaft 5 extends out of the pump housing 2, and the driving motor 1 is drivingly connected to the rotating shaft 5.

[0027] As Figure 2 shown, the mounting plate 7 and the fixing plate 6 are arranged in parallel. A connecting rod 8 is connected between the fixing plate 6 and the mounting plate 7. The connecting rod 8 is located at the outer peripheral edge position of the fixing plate 6 and the mounting plate 7. The rotating shaft 5 passes through the center position of the fixing plate 6 and is fixedly connected to the fixing plate 6. A regulating mechanism 10 is installed on the part of the rotating shaft 5 between the fixing plate 6 and the mounting plate 7. A plurality of blades 9 are installed on the regulating mechanism 10. The regulating mechanism 10 can adjust the angle of the blades 9. An inlet 11 is provided at the middle position of the mounting plate 7. By driving the blades 9 to rotate through the regulating mechanism 10 and adjusting the angle of the blades 9, the contact surface between the blades 9 and water is changed, thereby changing the lift of the pump and improving the efficiency of pumping water.

[0028] As Figure 3 、 Figure 4 、 Figure 5 shown, the regulating mechanism 10 includes a mounting sleeve 15. An installation cavity 16 is provided in the mounting sleeve 15. The inner end of the blade 9 is connected to a central shaft 13. The central shaft 13 is rotatably arranged on the side wall of the mounting sleeve 15. Sealing sleeves 30 are provided on both the inner and outer sides of the side wall of the mounting sleeve 15. The central shaft 13 passes through the sealing sleeve 30 and is rotatably connected to the sealing sleeve 30. The inner end of the central shaft 13 extends into the installation cavity 16 and is connected to a transmission bevel gear 14. A support ring 18 is rotatably arranged in the installation cavity 16. A tooth block 20 is provided on the support ring 18. The tooth block 20 can be meshed with the transmission bevel gear 14. A first tooth ring 19 is connected to the inner circumference of the support ring 18. A regulating motor 24 is provided in the installation cavity 16. The regulating motor 24 is drivingly connected to a first driving gear 25. The first driving gear 25 can be meshed with the first tooth ring 19. The regulating motor 24 drives the first driving gear 25 to rotate. The first driving gear 25 drives the support ring 18 to rotate through the first tooth ring 19. The support ring 18 drives the transmission bevel gear 14 to rotate through the tooth block 20, so that the blades 9 rotate to change the angle. The angle between the blades 9 and the horizontal plane becomes larger, so that the area of the blades 9 in contact with water becomes larger, thereby improving the efficiency of the pump and also increasing the lift of the pump.

[0029] There are two support rings 18, which are respectively located on the upper and lower sides of the transmission bevel gear 14. The two support rings 18 are symmetrically arranged with the axial center line of the transmission bevel gear 14 as the center line. The tooth blocks 20 on the upper support ring 18 are installed on the lower side, and the tooth blocks 20 on the lower support ring 18 are installed on the upper side. The tooth blocks 20 on the upper support ring 18 and the tooth blocks 20 on the lower support ring 18 are staggered, so that the tooth blocks 20 on the upper support ring 18 and the tooth blocks 20 on the lower support ring 18 are respectively engaged with one of the adjacent two transmission bevel gears 14. It also includes a lifting mechanism 29, and the lifting mechanism 29 can drive the adjustment motor 24 to lift, so that the first driving gear 25 is respectively engaged with the upper first tooth ring 19 or the lower first tooth ring 19.

[0030] Support seats 17 are provided both in the upper part and the lower part of the first installation cavity 16, and the support ring 18 is rotatably arranged on the support seats 17.

[0031] The area of the blade 9 acting on the water increases, and the reaction force of the water it receives also increases accordingly, making it easy to be damaged. By providing two support rings 18 to act on the adjacent blades 9 respectively, the loss of the blades 9 can be balanced, thereby prolonging the overall service efficiency of the blades 9. The specific method is to drive the adjustment motor 24 to lift through the lifting mechanism 29, so that the first driving gear 25 is engaged with the upper first tooth ring 19 or the lower first tooth ring 19. When the first driving gear 25 is engaged with the lower first tooth ring 19, the first driving gear 25 drives the support ring 18 to rotate through the lower first tooth ring 19, and the tooth blocks 20 on the support ring 18 act on the corresponding transmission bevel gear 14, thereby driving the corresponding blade 9 to rotate to adjust the angle. There is no tooth block 20 on the support ring 18 below the transmission bevel gear 14 connected to the adjacent blade 9 for cooperation, so it will not rotate and can be in a standby state. When it is necessary to adjust the angle of the adjacent blade 9, the lifting mechanism 29 drives the adjustment motor 24 to rise, so that the first driving gear 25 is engaged with the upper first tooth ring 19. At this time, the upper support ring 18 can be driven to rotate so that the corresponding tooth block 20 drives the adjacent blade 9 to rotate.

[0032] The adjacent blades 9 can be adjusted to the same angle to obtain the maximum water pumping power. They can also be at different angles to reduce the wear of the blades 9 with a smaller inclination. Then, the inclination of the adjacent blades 9 is alternately switched and cooperated with each other to reduce the overall wear.

[0033] Such as Figure 3As shown, in order to ensure that the angles of the other set of blades 9 are maintained when the angles of adjacent blades 9 are adjusted alternately, mounting posts 49 are respectively installed on the upper and lower parts of the adjusting motor 24. A moving post 50 is slidably installed in the mounting post 49. A second spring 51 is connected between the moving post 50 and the mounting post 49. One end of the moving post 50 away from the mounting post 49 is connected with a clamping block 26, and the clamping block 26 can be engaged with the first toothed ring 19. When the first driving gear 25 meshes with the lower first toothed ring 19, the lower clamping block 26 is not engaged with the lower first toothed ring 19, the upper clamping block 26 remains engaged with the upper first toothed ring 19, and the moving post 50 extends out of the mounting post 49. During the process of the adjusting motor 24 driving the first driving gear 25 to rise, the clamping block 26 can immediately engage with the lower first toothed ring 19 to fix the position of the blade 9. At this time, due to the action of the second spring 51, the upper clamping block 26 remains engaged with the upper first toothed ring 19, and the upper moving post 50 will gradually retract into the upper mounting post 49. As the first driving gear 25 continues to rise, when the moving post 50 is completely retracted into the mounting post 49, the upper end of the mounting post 49 abuts against the clamping block 26 to rise and disengage it from the first toothed ring 19. At the same time, the first driving gear 25 also immediately meshes with the upper first toothed ring 19. During this process, the lower moving post 50 gradually extends out of the lower mounting post 49, and the lower clamping block 26 remains engaged with the lower first toothed ring 19.

[0034] The lifting mechanism 29 includes a lead screw motor 21 and a lead screw 22 rotatably arranged in the first mounting cavity 16. The lead screw 22 is arranged along the axial direction of the rotating shaft 5. The lead screw motor 21 is drivingly connected to the lead screw 22. A lead screw slider 23 is arranged on the lead screw 22, and the adjusting motor 24 is installed on the lead screw slider 23. By driving the lead screw 22 to rotate through the lead screw motor 21, the lead screw slider 23 is driven to move, so as to complete the adjustment of the height of the adjusting motor 24.

[0035] As Figure 4 shown, the position of the connecting rod 8 corresponds to the blade 9. A support shaft 28 is connected to the outer end of the blade 9. A rotating seat 27 is arranged inside the connecting rod 8. The support shaft 28 is rotatably arranged in the rotating seat 27. A water pumping outlet of the impeller is formed between adjacent connecting rods 8.

[0036] As Figure 7As shown, an installation cavity two 35 and an opening 36 are formed in the installation plate 7. The installation cavity two 35 communicates with the opening 36, and the opening 36 communicates with the water inlet 11. A regulating plate 12 is slidably arranged in the opening 36, and a part of the regulating plate 12 is located in the water inlet 11. The inner end of the regulating plate 12 can extend out of the opening 36 and into the water inlet 11. The inner ends of several regulating plates 12 enclose an inlet for the impeller to intake water. By adjusting the size enclosed by the inner ends of the regulating plates 12, the size of the impeller water intake inlet can be changed. When the rotational speed of the impeller increases, the water pumping efficiency increases. By increasing the size of the inlet, more water can enter the impeller to meet the water consumption. When the rotational speed of the impeller is relatively small, the size of the inlet is reduced.

[0037] As Figure 6 shown, the regulating plate 12 is fan-shaped, and several regulating plates 12 can be spliced into a ring. In this example, four regulating plates 12 are provided, and the central angle of the regulating plate 12 is 90 degrees. As Figure 9 shown, an installation groove 47 is formed on the side surface of the regulating plate 12. A sealing film 48 is connected between the side surfaces of adjacent regulating plates 12. The end of the sealing film 48 is installed in the installation groove 47 through a rotating shaft, and a torsion spring is installed at the rotating shaft. When the regulating plate 12 moves radially outward along the installation plate 7, a gap will be generated between adjacent regulating plates 12. By providing the sealing film 48, the sealing film 48 can be stretched as the regulating plate 12 moves, so as to make up for the gap between the side surfaces of the two regulating plates 12. When the regulating plate 12 moves radially inward along the installation plate 7, the sealing film 48 can also be received into the installation groove 47 and will not be clamped between the two regulating plates 12.

[0038] As Figure 9 shown, a sealing ring 46 is embedded on the side surface of the regulating plate 12. When the side surfaces of adjacent regulating plates 12 are in contact with each other, the sealing effect between the two side surfaces is achieved through the sealing ring 46.

[0039] One end of the regulating plate 12 located in the installation cavity two 35 is connected with a movable block 32. A guide rail 37 is arranged at the upper part of the installation cavity two 35. The movable block 32 is slidably connected with the guide rail 37. Several racks 38 are arranged at the lower part of the movable block 32. A rotating disk 33 is rotatably arranged in the installation cavity two 35. The rotating disk 33 is located below the regulating plate 12. A spiral groove 34 is formed at the upper part of the rotating disk 33. The racks 38 are arranged in the spiral groove 34. A rotating mechanism 31 is arranged in the installation cavity two 35. The rotating mechanism 31 includes a rotating motor 39. The rotating motor 39 is drivingly connected with a driving gear two 41. A gear ring two 40 is arranged below the rotating disk 33. The driving gear two 41 meshes with the gear ring two 40.

[0040] The rotating electric machine 39 drives the driving gear two 41 to rotate. The driving gear two 41 drives the rotating disk 33 to rotate through the gear ring two 40. The rotating disk 33 then drives the movable block 32 to move through the cooperation of the spiral groove 34 and the rack 38. The guide rail 37 is arranged along the radial direction of the mounting plate 7. The guide of the movable block 32 by the guide rail 37 causes the adjusting plate 12 to move along the radial direction of the mounting plate 7.

[0041] Further, a moving frame 42 is arranged in the mounting cavity two 35. A moving block 43 is slidably arranged in the moving frame 42. The sliding direction of the moving block 43 is the radial direction of the mounting cavity two 35. A first spring 44 is connected to the moving block 43. The other end of the first spring 44 is connected to the outer side of the moving frame 42. A plurality of triggers 45 are installed on the side surface of the moving frame 42. The trigger 45 includes a receiving groove opened on the side surface of the moving frame 42. A trigger block is installed in the receiving groove. The end of the trigger block extending into the receiving groove is hemispherical. A trigger switch is arranged at the bottom of the receiving groove. A spring is connected between the lower part of the trigger block and the bottom of the receiving groove. When the moving block 43 slides and contacts the end of the trigger block, the trigger block is pressed into the receiving groove, so that the trigger block contacts the trigger switch to send a signal. The trigger 45 is electrically connected to the gear ring two 40.

[0042] As the rotational speed of the impeller increases, the moving block 43 has a tendency to move radially outward of the mounting plate 7. As the moving block 43 moves, it will contact the triggers 45 arranged radially along the mounting plate 7 one by one. By the triggering sequence of the triggers 45 at different positions, it can be judged whether the rotational speed of the impeller is increasing, decreasing or remaining unchanged, so as to respectively control the operating state of the gear ring two 40, and thereby adjust the position of the adjusting plate 12 targeted to change the size of the water inlet of the impeller.

[0043] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A water pump, characterized in that: The pump casing (2) comprises a driving motor (1) and a pump casing (2). One axial end of the pump casing (2) is connected to a water inlet pipe (3). The outer periphery of the pump casing (2) is connected to a water outlet pipe (4). The driving motor (1) is located on a side of the pump casing (2) away from the water inlet pipe (3). An impeller is rotatably arranged in the pump casing (2). The impeller comprises a rotating shaft (5), a fixing plate (6), a mounting plate (7), a connecting rod (8), and blades (9). The rotating shaft (5) extends out of the pump casing (2). The driving motor (1) drives the rotating shaft (5). The mounting plate (7) and the fixing plate (6) are arranged in parallel. A connecting rod (8) is connected between the fixing plate (6) and the mounting plate (7). The rotating shaft (5) passes through a connecting rod (8). The rotating shaft (5) passes through the center of the fixed plate (6) and is fixedly connected to the fixed plate (6); the portion of the rotating shaft (5) between the fixed plate (6) and the mounting plate (7) is provided with an adjusting mechanism (10); a plurality of blades (9) are installed on the adjusting mechanism (10); a water inlet (11) is provided in the middle of the mounting plate (7); the adjusting mechanism (10) comprises a mounting sleeve (15); a mounting cavity (16) is provided in the mounting sleeve (15); the inner end of the blade (9) is connected to a central shaft (13); the central shaft (13) is rotatably arranged on the side wall of the mounting sleeve (15); the inner end of the central shaft (13) extends into the mounting cavity (16) and is connected to a transmission bevel gear (14); the mounting sleeve (15) is provided with a water inlet (11); the water inlet (1 ... A support ring (18) is rotatably arranged in the mounting cavity (16), and a tooth block (20) is arranged on the support ring (18), and the tooth block (20) can mesh with the transmission bevel gear (14). The inner circumference of the support ring (18) is connected to a tooth ring (19). An adjustment motor (24) is arranged in the mounting cavity (16), and the adjustment motor (24) is drivingly connected to a drive gear (25), and the drive gear (25) can mesh with the tooth ring (19). The support ring (18) is provided with two and is respectively located on the upper and lower sides of the transmission bevel gear (14), the tooth block (20) on the upper support ring (18) is installed on the lower side, and the tooth block (20) on the lower support ring (18) is installed on the lower side. The device is mounted on the upper side, the tooth blocks (20) on the upper support ring (18) and the tooth blocks (20) on the lower support ring (18) are arranged alternately, and also includes a lifting mechanism (29), the lifting mechanism (29) can drive the adjustment motor (24) to lift and lower, so that the driving gear 1 (25) is respectively meshed with the upper gear ring 1 (19) or the lower gear ring 1 (19); the mounting plate (7) is provided with a mounting cavity 2 (35) and an opening (36), the mounting cavity 2 (35) is connected to the opening (36), the opening (36) is connected to the water inlet (11), an adjustment plate (12) is slidably arranged in the opening (36), and a part of the adjustment plate (12) is located in the water inlet (11);One end of the adjustment plate (12) located in the second installation cavity (35) is connected to a movable block (32), a guide rail (37) is arranged on the upper part of the second installation cavity (35), the movable block (32) is slidably connected to the guide rail (37), a plurality of racks (38) are arranged on the lower part of the movable block (32), a rotating disk (33) is rotatably arranged in the second installation cavity (35), the rotating disk (33) is located below the adjustment plate (12), a spiral groove (34) is opened on the upper part of the rotating disk (33), the rack (38) is arranged in the spiral groove (34), a rotating mechanism (31) is arranged in the second installation cavity (35), the rotating mechanism (31) comprises a rotating motor (39), the rotating motor (39) is drivingly connected to a second driving gear (41), a second gear ring (40) is arranged below the rotating disk (33), the second driving gear (41) is meshed with the second gear ring (40). ; 2. A water pump according to claim 1, characterized in that: The upper and lower parts of the regulating motor (24) are respectively provided with clamping blocks (26), and the clamping blocks (26) can be engaged with the gear ring 1 (19).

3. A water pump according to claim 1 or 2, characterized in that: The lifting mechanism (29) comprises a screw motor (21) and a screw (22) rotatably arranged in the installation cavity (16); the screw (22) is arranged along the axial direction of the rotating shaft (5); the screw motor (21) drives the connecting screw (22); a screw slider (23) is arranged on the screw (22); and the adjusting motor (24) is installed on the screw slider (23).

4. A water pump according to claim 1, characterized in that: The adjustment plate (12) is fan-shaped, and a mounting groove (47) is provided on the side of the adjustment plate (12). A sealing film (48) is connected between the side surfaces of adjacent adjustment plates (12), and the end of the sealing film (48) is installed in the mounting groove (47).

5. A water pump according to claim 1, characterized in that: A moving frame (42) is arranged in the second installation cavity (35), a moving block (43) is slidably arranged in the moving frame (42), the sliding direction of the moving block (43) is the radial direction of the second installation cavity (35), a spring (44) is connected to the moving block (43), the other end of the spring (44) is connected to the outer side of the moving frame (42), and a plurality of triggers (45) are installed on the side of the moving frame (42).

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