Self-priming pump with adjustable motor

Abstract

The utility model discloses a self-priming pump with an adjustable motor, and particularly relates to the field of self-priming pumps, the self-priming pump comprises a pump body, one side of the pump body is welded and communicated with a liquid inlet pipe, an electric air control valve is arranged above the middle of the liquid inlet pipe, and the center of the inner wall of the top of the pump body is connected with a pump shaft through a bearing; the top of the pump body is connected with a motor frame, the top of the motor frame is provided with an adjusting mechanism, the top of the adjusting mechanism is provided with a servo motor, an output shaft of the servo motor is connected with a pump shaft through a coupler, and the adjusting mechanism comprises a rotating cylinder, a twisting disc, an upper backing ring and a lower backing ring. According to the adjusting mechanism, the rotating cylinder can be driven to rotate by adjusting the rotating twisting disc, and the rotating cylinder rotates to drive the upper backing ring and the lower backing ring to do translational motion in opposite directions, so that the overall height of the adjusting mechanism is changed, and corresponding height adjustment can be conveniently carried out when different motors are installed.

Description

Technical Field

[0001] The utility model relates to the field of self-priming pumps, and more specifically, to a motor-adjustable self-priming pump. Background Art

[0002] A self-priming water pump is a pump that can automatically absorb liquid and transport it to a higher place without hydraulic pressure. The core of the pump is to achieve automatic water absorption through the negative pressure principle inside the pump body.

[0003] After searching, the existing patent (publication number: CN106286312A) discloses a small automatic water suction pump, including a pump body, a boosting chamber, a water outlet, a water inlet, a water inlet conduit, a base, and a water outlet conduit; including a pump body, a boosting chamber is arranged below the pump body, and a water inlet is arranged on one side of the boosting chamber, one side of the water inlet is connected to the water inlet conduit, and one side of the water inlet conduit is connected to the water outlet conduit, a water outlet is arranged on one side of the water outlet conduit, and a base is arranged below the water inlet conduit and the water outlet conduit; the present invention has a simple and reasonable structure, a small size, a reasonable connection, and is easy to use. By arranging a boosting chamber connected to the water inlet conduit and the water outlet conduit inside the device, the water supply and drainage effects of the water pump are effectively increased. The boosting chamber, the water inlet conduit, and the water outlet conduit are fixedly connected vertically by the base, which effectively ensures the stability of the overall structure of the device. In the process of realizing the utility model, the inventor found that the existing technology has the following problems:

[0004] Current self-priming water pumps can often only be connected to fixed-type motors. When customers purchase motors for installation themselves, this often causes installation problems. The lack of an adjustable distance between the motor frame and the motor makes it impossible to install motor output shafts of different lengths.

[0005] Therefore, in response to the above problems, a motor-adjustable self-priming pump is proposed. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a motor-adjustable self-priming pump to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor-adjustable self-priming pump, comprising a pump body, one side of the pump body is welded with a liquid inlet pipe, and the end of the pump body away from the liquid inlet pipe is welded with a liquid outlet pipe, an electric air control valve is arranged above the middle of the liquid inlet pipe, a pump shaft is connected to the center of the top inner wall of the pump body through a bearing, the bottom end of the pump shaft is connected to the impeller through a locking nut, a sub-impeller is arranged on the top of the impeller, a sealing box is provided at the connection between the pump shaft and the pump body, an O-ring is provided at the edge of the sealing box, the top of the pump body is connected to a motor frame, an adjusting mechanism is provided on the top of the motor frame, a servo motor is provided on the top of the adjusting mechanism, the output shaft of the servo motor and the pump shaft are connected by a coupling, and the adjusting mechanism comprises a rotating cylinder, a torsion disk, an upper gasket and a lower gasket.

[0008] Preferably, the middle outer wall of the rotating cylinder is connected to a twisting disk, an upper gasket is provided on the top of the twisting disk, a lower gasket is provided on the side of the twisting disk away from the upper gasket, and connection holes are arranged on the surfaces of the upper gasket and the lower gasket.

[0009] Preferably, the outer walls of the rotating cylinders on both sides of the twisting disk are provided with external threads, the spiral directions of the two groups of external threads are opposite, the inner walls of the upper gasket and the lower gasket are provided with internal threads, and the two groups of internal threads are threadedly connected to the external threads on the corresponding side.

[0010] Preferably, the surface of the twisting disk is arranged with through grooves, the outer walls on both sides of the upper gasket are connected to the limiting rods, the outer walls on both sides of the lower gasket are connected to the limiting cylinders, and the bottom ends of the two groups of limiting rods are embedded in the corresponding limiting cylinders.

[0011] Preferably, a check valve body is provided at one end of the liquid outlet pipe, and a valve stem is provided inside the check valve body.

[0012] Preferably, a drainage hole is provided on the outer wall of one side of the middle portion of the pump body.

[0013] The technical effects and advantages of this utility model are:

[0014] Compared with the existing technology, this motor-adjustable self-priming pump can drive the rotating drum to rotate by adjusting the rotating torsion disk. The rotation of the rotating drum drives the external threads on both sides to rotate synchronously. Since the spiral directions of the two sets of external threads are opposite and they are threadedly connected to the two sets of internal threads, the rotation of the rotating drum can drive the upper gasket and the lower gasket to move in opposite directions, thereby changing the overall height of the adjustment mechanism, so as to facilitate the corresponding height adjustment when installing different motors, avoiding installation problems caused by customers purchasing motor adjustment sizes themselves, and also avoiding the problem of excessive motor bearing clearance caused by motor manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the connection structure between the motor frame and the servo motor of the utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of the utility model.

[0018] Figure 4 This is a schematic diagram of the disassembled structure of the adjustment mechanism of the utility model.

[0019] Figure 5 This is a schematic diagram of the top view of the twisting disk of the utility model.

[0020] The accompanying drawings are marked as follows: 1. Pump body; 2. Liquid inlet pipe; 3. Liquid outlet pipe; 4. Electric air control valve; 5. Pump shaft; 6. Impeller; 61. Auxiliary impeller; 7. Sealing box; 8. O-ring; 9. Motor frame; 10. Adjustment mechanism; 11. Servo motor; 12. Rotating cylinder; 13. Twisting disk; 14. Upper gasket; 15. Lower gasket; 16. Connecting hole; 17. External thread; 18. Internal thread; 19. Through groove; 20. Limit rod; 21. Limit cylinder; 22. Check valve body; 23. Valve stem; 24. Drain hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0022] As attached Figures 1 to 5 The shown motor-adjustable self-priming pump includes a pump body 1, one side of the pump body 1 is welded with a liquid inlet pipe 2, the end of the pump body 1 away from the liquid inlet pipe 2 is welded with a liquid outlet pipe 3, an electric air control valve 4 is provided above the middle of the liquid inlet pipe 2, a pump shaft 5 is connected to the center of the top inner wall of the pump body 1 through a bearing, the bottom end of the pump shaft 5 is connected to the impeller 6 through a locking nut, the top of the impeller 6 is provided with a secondary impeller 61, a sealing box 7 is provided at the connection between the pump shaft 5 and the pump body 1, an O-ring 8 is provided at the edge of the sealing box 7, the top of the pump body 1 is connected to a motor frame 9, the top of the motor frame 9 is provided with an adjusting mechanism 10, the top of the adjusting mechanism 10 is provided with a servo motor 11, the output shaft of the servo motor 11 is connected to the pump shaft 5 through a coupling, and the adjusting mechanism 10 includes a rotating cylinder 12, a torsion disk 13, an upper gasket 14 and a lower gasket 15.

[0023] Among them: the liquid outlet pipe 3 and the liquid inlet pipe 2 can be connected to an external pipeline for subsequent water pumping, and the electric air control valve 4 plays a controlling role. The pump shaft 5 can be driven to rotate by the servo motor 11. The rotation of the pump shaft 5 drives the impeller 6 and the auxiliary impeller 61 to rotate synchronously, so that a negative pressure environment is generated in the pump body 1 to achieve the pumping effect. At the same time, the sealing box 7 and the O-ring 8 play a sealing role to avoid water leakage when the self-priming pump is working. The adjustment mechanism 10 plays an adjusting role and is arranged between the servo motor 11 and the motor frame 9. The spacing between the upper gasket 14 and the lower gasket 15 is adjusted by the adjustment mechanism 10 to change the overall thickness so that different models of motors can be installed and connected, avoiding installation problems caused by customers purchasing motors and adjusting the size themselves, and also avoiding the problem of excessive motor bearing clearance caused by motor manufacturers. Example 2

[0024] Based on Example 1, the solution in Example 1 is further detailed in combination with the following specific working methods. Figures 1 to 5 As shown, see the following description for details:

[0025] As a preferred embodiment, a twisting disk 13 is connected to the middle outer wall of the rotating cylinder 12, an upper gasket 14 is provided on the top of the twisting disk 13, and a lower gasket 15 is provided on the side of the twisting disk 13 away from the upper gasket 14, and the surfaces of the upper gasket 14 and the lower gasket 15 are arranged with connecting holes 16; further, the upper gasket 14 and the lower gasket 15 can be raised and lowered on the outer wall of the rotating cylinder 12, and can be connected and fixed to the servo motor 11 and the motor frame 9 through the connecting holes 16.

[0026] As a preferred embodiment, the outer walls of the rotating cylinder 12 on both sides of the torsion disk 13 are provided with external threads 17, and the spiral directions of the two groups of external threads 17 are opposite. The inner walls of the upper gasket 14 and the lower gasket 15 are provided with internal threads 18, and the two groups of internal threads 18 are threadedly connected to the external threads 17 on the corresponding side; further, by adjusting and rotating the torsion disk 13, the rotating cylinder 12 can be driven to rotate, and the rotation of the rotating cylinder 12 drives the external threads 17 on both sides to rotate synchronously. Since the spiral directions of the two groups of external threads 17 are opposite and they are threadedly connected to the two groups of internal threads 18, the rotation of the rotating cylinder 12 can drive the upper gasket 14 and the lower gasket 15 to perform translational movement in opposite directions, thereby changing the overall height of the adjustment mechanism 10, so as to facilitate the corresponding height adjustment when installing different motors.

[0027] As a preferred embodiment, the surface of the torsion disk 13 is arranged with through grooves 19, the outer walls on both sides of the upper gasket 14 are connected to the limiting rods 20, and the outer walls on both sides of the lower gasket 15 are connected to the limiting cylinders 21, and the bottom ends of the two sets of limiting rods 20 are embedded in the corresponding limiting cylinders 21; further, the through grooves 19 play a connecting role to prevent the adjusting mechanism 10 from being blocked by the torsion disk 13 when it is connected to the bolts through the two sets of connecting holes 16, and the limiting rods 20 are embedded in the limiting cylinders 21 to play a limiting role to prevent the upper gasket 14 and the lower gasket 15 from rotating with the torsion disk 13.

[0028] As a preferred embodiment, a check valve body 22 is provided at one end of the liquid outlet pipe 3, and a valve stem 23 is provided inside the check valve body 22; further, the check valve body 22 and the valve stem 23 act as a check valve to prevent water in the liquid outlet pipe 3 from flowing back into the valve body 1.

[0029] As a preferred embodiment, a drainage hole 24 is provided on the outer wall of one side of the middle portion of the pump body 1 ; further, the residual water in the valve body 1 after operation can be discharged through the drainage hole 24 .

[0030] The working process of the present invention is as follows: first, the liquid outlet pipe 3 and the liquid inlet pipe 2 can be connected to the external pipeline for subsequent water pumping. The electric air control valve 4 plays a control role. The servo motor 11 can drive the pump shaft 5 to rotate. The rotation of the pump shaft 5 drives the impeller 6 and the auxiliary impeller 61 to rotate synchronously to achieve the pumping effect. At the same time, the sealing box 7 and the O-ring 8 play a sealing role to avoid water leakage when the self-priming pump is working. The adjustment mechanism 10 plays an adjustment role and is arranged between the servo motor 11 and the motor frame 9. The spacing between the upper gasket 14 and the lower gasket 15 is adjusted by the adjustment mechanism 10 to change the overall thickness so that different models of motors can be installed and connected, avoiding installation problems caused by customers purchasing motor adjustment sizes themselves. At the same time, it can also avoid the problem of excessive motor bearing clearance caused by the motor manufacturer. The rotating cylinder 12 can be driven to rotate by adjusting the rotating torsion disk 13. The rotation of the cylinder 12 drives the external threads 17 on both sides to rotate synchronously. Since the spiral directions of the two groups of external threads 17 are opposite and they are threadedly connected to the two groups of internal threads 18, the rotation of the rotating cylinder 12 can drive the upper gasket 14 and the lower gasket 15 to move in opposite directions, thereby changing the overall height of the adjustment mechanism 10, so as to facilitate the corresponding height adjustment when installing different motors. The through groove 19 plays a connecting role to prevent the adjustment mechanism 10 from being blocked by the torsion disk 13 when it is connected to the bolts through the two groups of connecting holes 16. The limit rod 20 is embedded in the limit cylinder 21 to play a limiting role to prevent the upper gasket 14 and the lower gasket 15 from rotating with the torsion disk 13. The check valve body 22 and the valve stem 23 play a check role to prevent water from the liquid outlet pipe 3 from flowing back into the valve body 1. The remaining water in the valve body 1 after work can be discharged through the drain hole 24. The above is the working principle of this motor-adjustable self-priming pump.

Claims

1. A motor-adjustable self-priming pump, comprising a pump body (1), characterized in that: One side of the pump body (1) is welded with a liquid inlet pipe (2), and the end of the pump body (1) away from the liquid inlet pipe (2) is welded with a liquid outlet pipe (3), and an electric air control valve (4) is provided above the middle of the liquid inlet pipe (2). The center of the top inner wall of the pump body (1) is connected to a pump shaft (5) through a bearing, and the bottom end of the pump shaft (5) is connected to an impeller (6) through a locking nut. The top of the impeller (6) is provided with an auxiliary impeller (61), and the connection between the pump shaft (5) and the pump body (1) is provided with a A sealing box (7) is provided with an O-ring (8) at the edge of the sealing box (7), the top of the pump body (1) is connected to a motor frame (9), the top of the motor frame (9) is provided with an adjustment mechanism (10), the top of the adjustment mechanism (10) is provided with a servo motor (11), the output shaft of the servo motor (11) is connected to the pump shaft (5) through a coupling, and the adjustment mechanism (10) includes a rotating cylinder (12), a torsion disk (13), an upper gasket (14) and a lower gasket (15).

2. The motor-adjustable self-priming pump according to claim 1, characterized in that: A twisting disk (13) is connected to the outer wall of the middle portion of the rotating cylinder (12), an upper gasket (14) is provided on the top of the twisting disk (13), a lower gasket (15) is provided on the side of the twisting disk (13) away from the upper gasket (14), and connection holes (16) are arranged on the surfaces of the upper gasket (14) and the lower gasket (15).

3. The motor-adjustable self-priming pump according to claim 2, characterized in that: The outer walls of the rotating cylinders (12) on both sides of the twisting disk (13) are both provided with external threads (17), and the spiral directions of the two groups of external threads (17) are opposite. The inner walls of the upper gasket (14) and the lower gasket (15) are both provided with internal threads (18), and the two groups of internal threads (18) are threadedly connected to the external threads (17) on the corresponding side.

4. The motor-adjustable self-priming pump according to claim 3, characterized in that: The surface of the twisting disk (13) is provided with through grooves (19), the outer walls on both sides of the upper gasket (14) are connected to the limiting rods (20), the outer walls on both sides of the lower gasket (15) are connected to the limiting cylinders (21), and the bottom ends of the two groups of limiting rods (20) are embedded in the corresponding limiting cylinders (21).

5. The motor-adjustable self-priming pump according to claim 1, characterized in that: A check valve body (22) is provided at one end of the liquid outlet pipe (3), and a valve stem (23) is provided inside the check valve body (22).

6. The motor-adjustable self-priming pump according to claim 1, characterized in that: A drainage hole (24) is provided on an outer wall on one side of the middle portion of the pump body (1).

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