CN111946633A

CN111946633A - Magnetic suspension water pump

Info

Publication number: CN111946633A
Application number: CN202010994923.9A
Authority: CN
Inventors: 王伟清
Original assignee: Changsha Topsflo Pump Technology Co ltd
Current assignee: Changsha Topsflo Pump Technology Co ltd
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2020-11-17

Abstract

The invention provides a magnetic suspension water pump which comprises a pump head, a pump body, a connecting shaft, a rotor, a stator motor and an isolating sleeve, wherein the pump head is connected with the pump body through the connecting shaft; the pump head covers the opening of the isolation sleeve; the isolation sleeve is arranged in the pump body and the pump head; the cavity in the pump body and the pump head is divided into a pump cavity and a waterproof cavity by the isolating sleeve; the rotor is arranged in the pump cavity; the connecting shaft penetrates through the rotor, and two ends of the connecting shaft are fixedly connected with the pump head and the bottom of the isolating sleeve respectively; the stator motor is arranged in the waterproof cavity and used for driving the rotor in the pump cavity to rotate; the upper part of the rotor is fixedly provided with an impeller, and a lower cover plate of the impeller is provided with a balance hole. According to the invention, when the rotor rotates at a high speed, air in the pump cavity can be rapidly discharged from the water outlet along with the pushing of water flow, so that noise generated by the air can be reduced, the rotor is balanced by being adjusted by the motor under the stable rotation, the upper plane and the lower plane of the rotor cannot generate friction with the pump head and the isolation sleeve, and the rotor is suspended between the pump head and the isolation sleeve, so that the noise reduction function of the pump is improved, and the service life of the pump is prolonged.

Description

Magnetic suspension water pump

Technical Field

The invention relates to the technical field of micropumps, in particular to a magnetic suspension water pump.

Background

The water pump is a machine for delivering or pressurizing a liquid, and transfers mechanical energy of a prime mover or other external energy to the liquid, so that the energy of the liquid is increased. In the working process of the traditional water pump, the mechanical part and the rotor rub each other or the rotor rotates in water at a high speed to generate cavitation erosion, so that the traditional water pump generates inaudible noise, causes huge noise pollution to the working environment and reduces the service life of products.

In view of the above, there is a need for a magnetic suspension water pump to solve the problems in the prior art.

Disclosure of Invention

The invention aims to provide a magnetic suspension water pump, which aims to solve the problem of high noise when the water pump works and prolong the service life of the water pump.

In order to achieve the aim, the invention provides a magnetic suspension water pump which comprises a pump head, a pump body, a connecting shaft, a rotor, a stator motor and an isolating sleeve, wherein the pump head is connected with the pump body; the pump head covers the opening of the isolation sleeve; the isolation sleeve is arranged in the pump body and the pump head; the cavity in the pump body and the pump head is divided into a pump cavity and a waterproof cavity by the isolating sleeve; the rotor is arranged in the pump cavity; the connecting shaft penetrates through the rotor, and two ends of the connecting shaft are fixedly connected with the pump head and the bottom of the isolating sleeve respectively; the stator motor is arranged in the waterproof cavity and used for driving the rotor in the pump cavity to rotate; the upper part of the rotor is fixedly provided with an impeller, the impeller comprises a lower cover plate and blades arranged on the lower cover plate, the lower cover plate is fixedly connected with the rotor, and the lower cover plate is provided with a balance hole.

Furthermore, the impeller also comprises an upper cover plate, the upper cover plate is connected to the upper part of the blade, and the upper cover plate and the lower cover plate are arranged in parallel.

Further, the balance hole is provided with a plurality of, and a plurality of balance holes are evenly distributed around the rotation center of the rotor.

Furthermore, a drainage hole is formed between the rotor and the connecting shaft.

Furthermore, the drainage holes are provided with a plurality of drainage holes which are uniformly distributed around the rotation center of the rotor.

The technical scheme of the invention has the following beneficial effects:

according to the magnetic suspension water pump, water flow enters the pump head through the water inlet, the rotor drives the impeller to rotate when rotating, part of water carries the water flow to the plane of the isolation sleeve through the balance hole in the lower cover plate of the impeller, the water flow impacts the plane of the isolation sleeve to form reverse impact force, the rotor can quickly reach balance and is suspended in the middle of the motor to rotate, the other part of water directly flows into the pump cavity through the drainage hole, air in the pump cavity is quickly discharged from the water outlet along with the pushing of the water flow, noise generated by the air can be reduced, meanwhile, the rotor can reach balance from a quick and free state under stable rotation, noise generated by mechanical friction is reduced, the noise reduction function is effectively improved, the noise generated during working is greatly reduced, and the service life is prolonged.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of the overall structure of a magnetic suspension water pump;

FIG. 2 is a schematic view of a rotor construction;

FIG. 3 is a schematic view of a rotor structure containing drainage holes;

FIG. 4 is a schematic view of a rotor structure including an upper cover plate;

the device comprises a pump head 1, a pump head 2, a pump body 3, a connecting shaft 4, a rotor 41, a lower cover plate 411, a balance hole 42, a blade 43, an upper cover plate 44, a drainage hole 5, a stator motor 6 and an isolation sleeve.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.

Example 1:

referring to fig. 1 to 4, a magnetic suspension water pump comprises a pump head 1, a pump body 2, a connecting shaft 3, a rotor 4, a stator motor 5 and an isolation sleeve 6; the pump head 1 and the isolation sleeve 6 are covered on an opening of the pump body 2; the isolation sleeve 6 is arranged in the pump body 2 and the pump head 1; the cavity in the pump body 2 and the pump head 1 is divided into a pump cavity and a waterproof cavity by the isolation sleeve 6; the rotor 4 is arranged in the pump cavity; the connecting shaft 3 penetrates through the rotor 4, and two ends of the connecting shaft 3 are respectively fixedly connected with the pump head 1 and the bottom of the isolating sleeve 6; the stator motor 5 is arranged in the waterproof cavity and used for driving the rotor 4 in the pump cavity to rotate;

as shown in fig. 2, an impeller is fixedly disposed on the upper portion of the rotor 4, the impeller includes a lower cover plate 41 and a blade 42 disposed on the lower cover plate, the lower cover plate 41 is fixedly connected with the rotor 4, and a balance hole 411 is formed in the lower cover plate 41. The balancing holes 411 are provided in plural, and the plural balancing holes 411 are uniformly distributed around the rotation center of the rotor 4. When the water pump works, the plane of the isolation sleeve is impacted by water flow to form reverse impact force, and the upper plane and the lower plane of the rotor do not generate friction with the pump head and the isolation sleeve and are suspended between the pump head and the isolation sleeve.

As shown in fig. 3, a drainage hole 44 is formed between the rotor 4 and the connecting shaft. The plurality of the drainage holes 44 are provided, and the plurality of the drainage holes 44 are uniformly distributed around the rotation center of the rotor 4.

As shown in fig. 4, the impeller further includes an upper cover plate 43, the upper cover plate 43 is connected to the upper portion of the blades 42, and the upper cover plate 43 is disposed in parallel with the lower cover plate 41.

According to the magnetic suspension water pump, water flow enters the pump head through the water inlet, the rotor drives the impeller to rotate when rotating, part of water carries the water flow to the plane of the isolation sleeve through the balance hole in the lower cover plate of the impeller, the water flow impacts the plane of the isolation sleeve to form reverse impact force, the rotor can quickly reach balance and is suspended in the middle of the motor to rotate, the other part of water directly flows into the pump cavity through the drainage hole, air in the pump cavity is quickly discharged from the water outlet along with the pushing of the water flow, noise generated by the air can be reduced, meanwhile, the rotor can reach balance from a quick and free state under the stable rotation, the noise generated by mechanical friction is reduced, the noise reduction function is effectively improved, and the noise generated during the working is greatly reduced.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A magnetic suspension water pump is characterized by comprising a pump head (1), a pump body (2), a connecting shaft (3), a rotor (4), a stator motor (5) and an isolation sleeve (6); the pump head (1) covers the opening of the isolation sleeve (6); the isolation sleeve (6) is arranged in the pump body (2) and the pump head (1); the cavity in the pump body (2) and the pump head (1) is divided into a pump cavity and a waterproof cavity by the isolation sleeve (6); the rotor (4) is arranged in the pump cavity; the connecting shaft (3) penetrates through the rotor (4), and two ends of the connecting shaft (3) are fixedly connected with the pump head (1) and the bottom of the isolating sleeve (6) respectively; the stator motor (5) is arranged in the waterproof cavity and used for driving the rotor (4) in the pump cavity to rotate;

the upper portion of the rotor (4) is fixedly provided with an impeller, the impeller comprises a lower cover plate (41) and blades (42) arranged on the lower cover plate, the lower cover plate (41) is fixedly connected with the rotor (4), and a balance hole (411) is formed in the lower cover plate (41).

2. A magnetic levitation water pump as recited in claim 1, wherein the impeller further comprises an upper cover plate (43), the upper cover plate (43) is attached to the upper portion of the blades (42), and the upper cover plate (43) is disposed in parallel with the lower cover plate (41).

3. A magnetic levitation water pump as claimed in claim 2, wherein the balancing holes (411) are provided in plurality, and the plurality of balancing holes (411) are evenly distributed around the rotation center of the rotor (4).

4. A magnetic suspension water pump according to claim 1, characterized in that a drainage hole (44) is provided between the rotor (4) and the connection shaft.

5. A magnetic suspension water pump according to claim 4, characterized in that the drainage holes (44) are provided in a plurality, and the plurality of drainage holes (44) are evenly distributed around the rotation center of the rotor (4).