Low-vibration high-stability magnetic drive pump

Abstract

The utility model belongs to the technical field of magnetic drive pumps, and particularly relates to a low-vibration high-stability magnetic drive pump which comprises a pump body, a motor, a main shaft and a magnetic driver, an impeller is arranged in the pump body, a cone frustum is arranged in the center of the impeller, and turbulent flow blades are arranged on the cone frustum. An output shaft of the motor is connected with one end of the main shaft through the magnetic coupler, the other end of the main shaft is connected with the magnetic driver, and the impeller is connected with the magnetic driver. One end of the motor is connected with one end of the pump body through the magnetic coupler, non-contact power transmission is achieved, vibration of the motor is prevented from being transmitted to the pump body, meanwhile, the cone frustum and the spoiler blades designed on the impeller can effectively reduce impact of water flow on the pump body, and therefore vibration is reduced, and stability of the magnetic drive pump is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of magnetic force pump, especially relates to a low vibration high stability magnetic force pump. BACKGROUND

[0002] The magnetic force pump mainly comprises a pump head, a magnetic force driver, a motor, a base and several parts. The magnetic force driver of the magnetic force pump comprises an outer magnetic rotor, an inner magnetic rotor and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate through the shaft coupling, the magnetic field can penetrate the air gap and the non-magnetic isolation sleeve, and drive the inner magnetic rotor connected with the impeller to rotate synchronously, so as to realize the non-contact synchronous transmission of the power, and convert the dynamic sealing structure prone to leakage into the static sealing structure with zero leakage.

[0003] The magnetic force pump may be affected by various factors during use, and the vibration may cause various hazards, for example, the vibration may cause the vibration of the motor and the pipeline, cause the damage of the bearing and other parts, cause the loosening of the connecting parts, the cracks of the foundation or the damage of the motor, cause the loosening and damage of the pipe fittings or valves connected with the water pump, form vibration noise, which not only affects the working environment, but also may cause the discomfort of the operator and increase the risk of accidents. Two reasons for the vibration of the magnetic force pump are that the pump is affected by the water flow impact during operation, especially in the case that the pump shaft is long, the water flow impact may cause the vibration of the underwater part of the pump to increase, and that the pump body and the motor of the magnetic force pump are connected by other rigid connections in addition to the transmission connection, and the vibration of the motor during operation is transmitted to the pump body.

[0004] Therefore, the above problems become technical problems to be solved. INVENTION CONTENTS

[0005] The utility model discloses a low vibration high stability magnetic force pump, which can reduce the vibration of the magnetic force pump and improve the stability.

[0006] Technical scheme: in order to realize the above object, the utility model provides a low vibration high stability magnetic force pump, including pump body, motor, main shaft and magnetic force driver, the pump body is equipped with the impeller, the center of the impeller is equipped with the circular truncated cone, is equipped with the spoiler blade on the circular truncated cone;

[0007] The output shaft of the motor is connected with one end of the main shaft through the magnetic force coupler, the other end of the main shaft is connected with the magnetic force driver, and the impeller is connected with the magnetic force driver.

[0008] The motor is connected with one end of the pump body through a magnetic coupler, so that the power transmission is realized in a non-contact mode, the vibration of the motor is avoided from being transmitted to the pump body, the conical table and the spoiler blade designed on the impeller can effectively reduce the impact of the water flow on the pump body, and thus the vibration is reduced.

[0009] Further, the rotation direction of the spoiler blade is consistent with the rotation direction of the impeller.

[0010] The end surface of the pump body is provided with a water inlet, the side surface of the pump body is provided with a water outlet, the spoiler blade is arranged close to the inner pipe wall of the water inlet, and the water inlet and the water outlet are both provided with a connecting flange.

[0011] The water flow of the water inlet forms a spiral flow under the action of the spoiler blade, the axial potential energy is reduced, and the impact on the impeller is reduced.

[0012] Further, the utility model further comprises a shell, the shell is connected with the pump body, the magnetic transmission is located in the shell, and the main shaft is rotatably arranged in the shell. The shell serves as a transition piece, protects the main shaft and the magnetic transmission well, and avoids that external impurities enter the inside and destroy the transmission structure.

[0013] Further, the main shaft is a stepped shaft, a group of bearings are arranged in the shell, and the main shaft is rotatably arranged on the bearings. The main shaft and the shell are installed through double bearings, the bearings can ensure smooth rotation of the main shaft and support the main shaft, and the stability of the whole is further improved.

[0014] Further, the magnetic transmission comprises an outer magnetic rotor, an inner magnetic rotor and an isolation sleeve, the outer magnetic rotor is connected with the main shaft, the inner magnetic rotor is arranged in the isolation sleeve, the isolation sleeve is sealingly arranged between the shell and the pump body, and the outer magnetic rotor surrounds the outer side of the isolation sleeve.

[0015] Further, a connecting shaft is coaxially arranged on the inner magnetic rotor, and the other end of the connecting shaft is connected with the impeller. The inner magnetic rotor transmits the torque to the impeller through the connecting shaft when rotating.

[0016] Further, the utility model further comprises a mounting base, mounting supports are arranged on the mounting base, the motor is mounted on the mounting supports, supports are arranged below the shell, the supports are arranged on the mounting base, supporting legs are arranged below the pump body, and the supporting legs are arranged on the mounting base.

[0017] The above technical scheme can achieve the following beneficial effects:

[0018] 1. This utility model provides a low-vibration, high-stability magnetic pump with a simple structure and reasonable design. During operation, the motor is no longer directly connected to the pump body via a shaft. Instead, the motor is connected to the main shaft via a magnetic coupler, and the main shaft is connected to a magnetic drive. This achieves contactless transmission between the motor and the pump body, preventing vibrations from affecting one end of the pump body. Furthermore, when the torque at one end of the pump body is overloaded, the magnetic coupler decouples, protecting the motor. Simultaneously, the absence of other rigid connections between the motor and the pump body further reduces vibration on one side of the pump body.

[0019] 2. This utility model designs a truncated cone and turbulence-reducing blades on the impeller. When the water enters the pump body, it first forms a swirling flow under the action of the turbulence-reducing blades, which reduces the axial potential energy of the water flow. Then, after being slowed down and diverted by the truncated cone, the impact force of the water flow on the blades is greatly reduced, thereby reducing vibration to a certain extent and making it more conducive to the stable operation of the magnetic pump. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a low-vibration, high-stability magnetic pump according to the present invention.

[0021] Figure 2 This is a schematic diagram of the external shape of a low-vibration, high-stability magnetic pump according to the present invention.

[0022] Figure 3 This is a schematic diagram of the pump body described in this utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the turbulence blade described in this utility model.

[0024] In the diagram: 100-Pump body, 101-Impeller, 102-Frustum conical, 103-Turbulence blades, 104-Inlet, 105-Outlet, 106-Support, 107-Connecting flange, 200-Motor, 300-Main shaft, 400-Magnetic drive, 401-Outer magnetic rotor, 402-Inner magnetic rotor, 403-Isolation sleeve, 404-Connecting shaft, 500-Magnetic coupler, 600-Housing, 601-Bearing, 602-Bracket, 700-Mounting base, 701-Mounting bracket. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0026] like Figures 1-4As shown, a low-vibration high-stability magnetic force pump includes a pump body 100, a motor 200, a main shaft 300 and a magnetic force transmission device 400, the pump body 100 is provided with an impeller 101, the center of the impeller 101 is provided with a conical platform 102, the conical platform 102 is provided with a spoiler blade 103.

[0027] The output shaft of the motor 200 is connected with one end of the main shaft 300 through a magnetic force coupler 500, the other end of the main shaft 300 is connected with the magnetic force transmission device 400, and the impeller 101 is connected with the magnetic force transmission device 400.

[0028] In the embodiment, the motor 200 is no longer directly connected with the pump body 100 through a shaft when the magnetic force pump is working, but the motor 200 is connected with the main shaft 300 through the magnetic force coupler 500, and the main shaft 300 is connected with the magnetic force transmission device 400, so that the motor 200 and the pump body 100 are connected in a non-contact mode, the vibration generated by the operation of the motor 200 will not affect the pump body 100, and when the torque of the pump body 100 is overloaded, the magnetic force coupler 500 is decoupled, so as to protect the motor 200. At the same time, there is no other rigid connection between the motor 200 and the pump body 100, further reducing the vibration of the pump body 100.

[0029] Among them, the rotation direction of the spoiler blade 103 is consistent with the rotation direction of the impeller 101;

[0030] The end surface of the pump body 100 is provided with a water inlet 104, the side surface of the pump body 100 is provided with a water outlet 105, the spoiler blade 103 is arranged close to the inner wall of the water inlet 104, and the water inlet 104 and the water outlet 105 are both provided with a connecting flange 107. The water flow first forms a rotational flow under the action of the spoiler blade 103 when entering the pump body 100, so as to reduce the potential energy of the water flow in the axial direction, and then the water flow is slowed down and distributed through the conical platform 102, so as to greatly reduce the impact force of the water flow on the blade 101, thereby reducing the vibration to a certain extent, and more conducive to the stable operation of the magnetic force pump.

[0031] In addition, as Figure 1 , 2Further comprising a shell 600, the shell 600 is connected with the pump body 100, the magnetic transmission 400 is located in the shell 600, and the main shaft 300 is rotatably arranged in the shell 600. The main shaft 300 is a stepped shaft, a set of bearings 601 are arranged in the shell 600, and the main shaft 300 is rotatably arranged on the bearings 601. The stepped main shaft 300 is matched with the bearings 601 on the two sides with smaller diameters, and the part with larger diameter is located between the two bearings 601, so as to facilitate the control of the axial movement of the main shaft 300. The cooperation of the main shaft 300 and the set of bearings 601 can not only ensure the smooth rotation of the main shaft 300, but also support the main shaft 300, which helps to stabilize the main shaft 300, that is, to improve the stability of the magnetic pump as a whole.

[0032] Preferably, the magnetic transmission 400 comprises an outer magnetic rotor 401, an inner magnetic rotor 402 and an isolation sleeve 403, the outer magnetic rotor 401 is connected with the main shaft 300, the inner magnetic rotor 402 is arranged in the isolation sleeve 403, the isolation sleeve 403 is sealingly arranged between the shell 600 and the pump body 100, and the outer magnetic rotor 401 surrounds the outer side of the isolation sleeve 403.

[0033] Specifically, a connecting shaft 404 is coaxially arranged on the inner magnetic rotor 402, and the other end of the connecting shaft 404 is connected with the impeller 101.

[0034] In addition, a mounting chassis 700 is further included, the mounting chassis 700 is provided with a mounting bracket 701, the motor 200 is mounted on the mounting bracket 701, a bracket 602 is arranged below the shell 600, the bracket 602 is arranged on the mounting chassis 700, and a supporting leg 106 is arranged below the pump body 100, and the supporting leg 106 is arranged on the mounting chassis 700. The pump body 100 and one side of the shell 600 are respectively mounted through separate support structures, and in order to further realize the low vibration effect, the mounting chassis 700 can be partitioned, so as to avoid the vibration of the motor 200 being transmitted to the pump body 100 through the mounting chassis 700.

[0035] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements can be made, and these improvements should also be considered as the protection scope of the present application.

Claims

1. A low-vibration, high-stability magnetic pump, characterized in that, It includes pump body (100), motor (200), main shaft (300) and magnetic transmission (400), the pump body (100) is equipped with impeller (101) in, the center of the impeller (101) is equipped with circular truncated cone (102), the circular truncated cone (102) is equipped with spoiler blade (103); The output shaft of the motor (200) is connected with one end of the main shaft (300) through the magnetic coupler (500), the other end of the main shaft (300) is connected with the magnetic transmission (400), the impeller (101) is connected with the magnetic transmission (400).

2. The low-vibration high-stability magnetic drive pump according to claim 1, wherein The rotation direction of the spoiler blade (103) is consistent with the rotation direction of the impeller (101); The end surface of the pump body (100) is equipped with water inlet (104), the side surface of the pump body (100) is equipped with water outlet (105), the spoiler blade (103) is arranged close to the inner tube wall of the water inlet (104), the water inlet (104) and the water outlet (105) are both equipped with connecting flange (107).

3. The low-vibration high-stability magnetic drive pump according to claim 1, wherein It also includes shell (600), the shell (600) is connected with pump body (100), the magnetic transmission (400) is located in the shell (600), the main shaft (300) is rotatably arranged in the shell (600).

4. The low-vibration high-stability magnetic drive pump according to claim 3, wherein The main shaft (300) is a stepped shaft, a set of bearings (601) are arranged in the shell (600), and the main shaft (300) is rotatably arranged on the bearings (601).

5. The low-vibration high-stability magnetic drive pump according to claim 3, wherein The magnetic transmission (400) includes outer magnetic rotor (401), inner magnetic rotor (402) and isolation sleeve (403), the outer magnetic rotor (401) is connected with the main shaft (300), the inner magnetic rotor (402) is arranged in the isolation sleeve (403), the isolation sleeve (403) is sealingly arranged between the shell (600) and the pump body (100), and the outer magnetic rotor (401) is surrounded on the outer side of the isolation sleeve (403).

6. The low-vibration high-stability magnetic drive pump according to claim 5, wherein The connecting shaft (404) is coaxially arranged on the inner magnetic rotor (402), and the other end of the connecting shaft (404) is connected with the impeller (101).

7. The low-vibration high-stability magnetic drive pump according to claim 1, wherein It also includes mounting chassis (700), the mounting chassis (700) is equipped with mounting bracket (701), the motor (200) is mounted on the mounting bracket (701), the shell (600) is equipped with bracket (602) below, the bracket (602) is arranged on the mounting chassis (700), the pump body (100) is equipped with supporting leg (106) below, and the supporting leg (106) is arranged on the mounting chassis (700).

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