CN202118002U

CN202118002U - Water-cooling centrifugal pump with cooling shaft

Info

Publication number: CN202118002U
Application number: CN2011202012645U
Authority: CN
Inventors: 李建飞; 阳运尾
Original assignee: KALEE PUMP (GROUP) CO Ltd
Current assignee: KALEE PUMP (GROUP) CO Ltd
Priority date: 2011-06-15
Filing date: 2011-06-15
Publication date: 2012-01-18
Anticipated expiration: 2021-06-15

Abstract

The utility model relates to a water-cooling centrifugal pump with a cooling shaft, which utilizes the cooling shaft structure. A cooling cavity is formed inside a motor shaft. Cooling water flows from a high-pressure cavity to a low-pressure cavity through the cooling cavity inside the motor shaft, is mixed with cooling water outside a motor together, and then flows back to a negative pressure cavity. Accordingly, a cooling loop is formed. Not only heat dissipated from the inside of the motor, but also heat dissipated from the outside of the motor is cooled. Simultaneously, the sealing problem of the motor is solved. After the centrifugal pump utilizes a water circulating cooling system with the cooling shaft structure, a fan is removed, thereby greatly saving energy consumption of the fan, protecting environment and saving energy. Because a main noise source, namely a motor high-speed cooling fan of a water pump is removed and water is filled on the periphery of all rotating parts such as rotors, bearings and the like simultaneously, noises generated by the rotating parts are further reduced due to the blocking of the water. Additionally, the circulating water filled on the periphery of the stators enables slight electromagnetic sounds generated by the motor to be completely separated from the outside world, thereby reducing the noises.

Description

A kind of water-cooled centrifugal pump that has the cooling axle

Technical field

The utility model relates to a kind of correlative technology field of centrifugal pump, is specifically related to a kind of water-cooled centrifugal pump that has the cooling axle.

Background technique

Be used for domestic water booster water pump ubiquity too noisy in the market, vibration efficient big, water pump is very low, has had a strong impact on normal work of people and living environment and healthy.Water pump can produce electromagnetic noise in the running of low frequency operating mode for a long time, bearing lacks good lubricated and grease and is prone to loss generation too noisy, the excessive shortcoming of vibration.User's water use peak phase is shorter; Only accounted for 20%～25% of the water time; All the other time water pumps all are under the operating mode of low frequency and move; This moment, water pump was under poor efficiency, to work, and long-play can cause motor to be prone to heating, bearing grease is prone to fusing and runs off, the shortcoming that causes motor to descend greatly working life.

In view of the foregoing, obviously motor is lowered the temperature by fan blade, and also will to reduce noise simultaneously be impracticable.Yet some producer also adopts water cooling mode, generally is through cooling motor shell a, and upper bearing (metal) shell b and lower bearing shell c are as shown in Figure 1; Though can reach effect in advance,, bring very big difficulty for like this sealing of motor; Have slightly not very, motor leaks, and burns motor.Thereby the research staff seeks a kind of sealing that can solve motor always, can solve the heat dissipation problem of motor again, improves the working efficiency of motor and the method for the operation noise that reduces unit simultaneously.

The model utility content

To above-mentioned defective, the purpose of the utility model provides a kind of water-cooled centrifugal pump that has the cooling axle, and is big with water pump noise height, the vibration that solves traditional fan blade cooling, the technical problem that its motor seal difficulty of the water pump of water-cooled cooling is big.

For realizing above-mentioned purpose, the technological scheme below the utility model has adopted:

A kind of water-cooled centrifugal pump that has the cooling axle; Adopt the water cooling motor; The motor outside of this centrifugal pump is provided with cooling circuit, and the motor shaft of described centrifugal pump is cooling axle construction, in axial direction is provided with axis hole in the motor shaft and makes a cooling of the inner formation of said motor shaft cavity; The exhalant canal of the water pump of described centrifugal pump is communicated with the outside cooling circuit of described centrifugal pump motor through the inner cooling cavity of described motor shaft again, forms a cooling circuit.

According to the described water-cooled centrifugal pump that has the cooling axle of the utility model preferred embodiment; The inner cooling cavity bottom of described motor shaft is provided with water outlet and is communicated with the outside cooling circuit of centrifugal pump motor; Also be provided with return pipe in this cooling cavity; One end of described return pipe is arranged in this cooling cavity, and the other end is communicated with the exhalant canal of water pump as the water intake of this cooling cavity.Described return pipe is fixed and is suspended from the inner cooling cavity of motor shaft through a fixed plate, and the bottom of return pipe is through being arranged at a pressing plate and a seal ring fixing seal of cooling cavity bottom.

Owing to adopted above technical characteristics; Make the utility model have following advantage and good effect: to adopt the hydrologic cycle cooling system that has the cooling axle than existing technology; Not only cool off the heat that motor internal distributes but also cooled off the heat that distribute the motor outside, solved the sealing problem of motor simultaneously.Cancelled noise source motor cooling fan; All rotatable parts peripheries such as rotor, bearing are full of water simultaneously; The sound that produces is through further reducing after the obstruct of water, and the stator periphery is full of circulating water again and can the trickle electromagnetic sound that motor produces be thoroughly isolated with extraneous.After adopting hydrologic cycle cooling system, remove fan, saved the energy that fan consumed, environmental protection and energy saving.

Description of drawings

Fig. 1 is the existing structural representation that adopts the centrifugal pump of water-cooling pattern;

Fig. 2 is a kind of structural representation that has the water-cooled centrifugal pump of cooling axle of the utility model;

Fig. 3 is the partial enlarged drawing of Fig. 2.

Embodiment

Be described in detail below in conjunction with the preferred embodiment of accompanying drawing, but the utility model is not restricted to these embodiments the utility model.The utility model is contained substituting of making on any marrow and scope at the utility model, modification, equivalent method and scheme.Understand for the public is had completely the utility model, in following the utility model preferred embodiment, specified concrete details, and do not had the description of these details also can understand the utility model fully for a person skilled in the art.

A kind of water-cooled centrifugal pump that has the cooling axle has adopted cooling axle construction, and is as shown in Figure 2, comprises water pump 1, motor 2, axle 3, return pipe 4, return pipe 5 and return pipe 6.Axle 3 is welded by axle 301 and axle 302, and axle 302 has axis hole a, axis hole b, axis hole c and axis hole d.Axis hole a, axis hole b, axis hole d aperture equate that axis hole c is more than or equal to the twice of return pipe 4 external diameters.The return pipe 4 as shown in Figure 3 and the sealing of axle 3: return pipe 4 seals through pressing plate 401 and seal ring 402 with the sealing of axle 3; Pressing plate 401 is welded on the return pipe 4; The hole that to have two above diameters on the fixed plate 403 be 4mm; Fixed plate 403 is welded on the return pipe 4, plays fixedly return pipe 4.The backflow of cooling water is as shown in Figure 2: cooling water flows to return pipe 4 by hyperbaric chamber I through axis hole a, axis hole b; Again through axis hole c; Axis hole d flows to low pressure area II; Low pressure area II communicates with motor cooling chamber III, and cooling water flows into water intake negative cavity IV by return pipe 5 through backwater hole e, return pipe 6 at last, forms a cooling circuit.Cooling water flows to low pressure chamber by hyperbaric chamber through motor axis hole; Merge with the outside cooling water of motor again and be back to negative cavity; Form cooling circuit, not only cooled off the heat that motor internal distributes but also cooled off the heat that distribute the motor outside, solved the sealing problem of motor simultaneously.Because circulatory mediator (water) is to force to flow through fully die cavity, do not exist the slough in the die cavity, convection heat exchange is effective, and the heat that can well in time take away motor and distributed is well cooled off bearing.Certainly, if conditions permit can be added fin and in the cavity of motor casing and urceolus composition, added snakelike water-blocking plate in die cavity, cooling effect can be better.

After adopting hydrologic cycle cooling system; A main noise having cancelled water pump comes from the high rotating speed cooling fan of motor; All rotatable parts peripheries such as rotor, bearing are full of water simultaneously; The sound that produces is through further reducing after the obstruct of water, and the stator periphery is full of circulating water again and can the trickle electromagnetic sound that motor produces be thoroughly isolated with extraneous, reduce noise.After adopting hydrologic cycle cooling system, remove fan, thereby saved the energy that fan consumed greatly, had the characteristics of environmental protection and energy saving.

The utility model preferred embodiment just is used for helping to set forth the utility model.Preferred embodiment does not have all details of detailed descriptionthe, does not limit this model utility yet and is merely described embodiment.Obviously, according to the content of this specification, can do a lot of modifications and variation.These embodiments are chosen and specifically described to this specification, is principle and practical application in order to explain the utility model better, thereby person skilled can be utilized the utility model well under making.The utility model only receives the restriction of claims and four corner and equivalent.

Claims

1. one kind has the water-cooled centrifugal pump that cools off axle; Comprise the centrifugal pump that adopts the water cooling motor; The motor outside of this centrifugal pump is provided with cooling circuit; It is characterized in that: the motor shaft of described centrifugal pump is cooling axle construction, in axial direction is provided with axis hole in the motor shaft and makes a cooling of the inner formation of said motor shaft cavity; The exhalant canal of the water pump of described centrifugal pump is communicated with the outside cooling circuit of described centrifugal pump motor through the inner cooling cavity of described motor shaft again, forms a cooling circuit.

2. a kind of water-cooled centrifugal pump that has the cooling axle as claimed in claim 1; It is characterized in that: the inner cooling cavity bottom of described motor shaft is provided with water outlet and is communicated with the outside cooling circuit of centrifugal pump motor; Also be provided with return pipe in this cooling cavity; One end of described return pipe is arranged in this cooling cavity, and the other end is communicated with the exhalant canal of water pump as the water intake of this cooling cavity; Described return pipe is fixed and is suspended from the inner cooling cavity of motor shaft through a fixed plate, and the bottom of return pipe is through being arranged at a pressing plate and a seal ring fixing seal of cooling cavity bottom.