CN219974843U

CN219974843U - Centrifugal pump with cooling structure

Info

Publication number: CN219974843U
Application number: CN202321628540.5U
Authority: CN
Inventors: 张君波; 杨克; 陈文达; 朱可蔚
Original assignee: Ningbo Junhe Intelligent Technology Co ltd
Current assignee: Ningbo Junhe Intelligent Technology Co ltd
Priority date: 2023-06-26
Filing date: 2023-06-26
Publication date: 2023-11-07
Anticipated expiration: 2033-06-26

Abstract

The utility model relates to a centrifugal pump technical field especially relates to a centrifugal pump with cooling structure, which comprises a pump body, the pump body includes the pump case, be provided with the motor in the pump body, fixed mounting has motor housing and motor inner shell in the pump body, the motor housing is the insulating layer, the motor sets up in the motor inner shell, form cooling channel between the inner wall of pump case and the motor housing, cooling channel is used for cooling down for the motor, the pump body is provided with the water inlet, cooling channel and water inlet intercommunication, water gets into cooling channel by the water inlet. The centrifugal pump with the cooling structure provided by the utility model has the advantages of simpler structure and lower cost; the motor is provided with motor housing and motor inner shell outward, effectively prevents the water and the motor direct contact of cooling channel, causes the damage to the motor, and the motor housing has further guaranteed the pump body safer at the during operation for the setting of insulating layer.

Description

Centrifugal pump with cooling structure

Technical Field

The present disclosure relates to the field of centrifugal pumps, and more particularly, to a centrifugal pump with a cooling structure.

Background

Centrifugal pumps are fluid machines that rely on centrifugal forces generated by rotation of impellers to transfer liquids and are widely used in the fields of urban sewage disposal, farm irrigation, petroleum transportation, marine vessels, chemical industry, and the like. Centrifugal pumps operate by using rotation of an impeller to cause centrifugal movement of water. Before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to do high-speed rotation movement, the water is centrifugally moved and thrown to the outer edge of the impeller, and the water flows into the water pressing pipeline of the water pump through the runner of the volute pump shell.

The motor can unavoidable heat production when the motor works, the motor of traditional centrifugal pump configuration is basically a standard forced air cooling induction motor, takes away the heat that produces in the motor working process through the fan circulation, cools off the motor, and the heat dissipation is by the fan, and the fan housing of bare metal fan falls and warp easily, blocks the fan, and the fan produces the noise.

At present, some enterprises try to make water-cooling pumps, namely utilize water to cool down motors, for example, chinese patent with the publication number CN216342851U discloses a water-cooling amphibious pump, which comprises a base, a pump body and a pump head, the pump body and the pump head are separated by a bracket, a pump cavity is arranged in the pump body, a motor is arranged in the pump cavity, a stator sleeve (a waterproof motor shell) is arranged between the motor and the pump cavity, an output shaft of the motor penetrates through the bracket to extend into the pump head, an impeller is fixedly connected with the tail end of the output shaft of the motor, a water outlet cover is arranged outside the impeller, a runner body part is arranged in the pump head, an inlet end of the water outlet cover is communicated with a runner body part, an outlet pipe communicated with the inside of the pump head is communicated with the inside of the pump head, a connecting pipe is communicated with the inside of the pump cavity, a water outlet hole is arranged at the bottom of the pump head, and a water injection hole is arranged on the connecting pipe above the pump head. The motor adopts a water cooling structure, fluid in the structure flows into the stator sleeve of the motor from the pump cavity, and a motor cooling fan is not required to be additionally arranged, so that the cooling efficiency is improved. However, the amphibious pump needs to additionally provide a connecting pipe and a runner body part for water cooling on the water pump, so that the overall structure of the water pump is complicated, and the production cost is increased.

Disclosure of Invention

To the not enough and the problem that exist of prior art, this disclosure provides a centrifugal pump with cooling structure, and this centrifugal pump simple structure is difficult for taking place the leakage of water.

The technical scheme adopted by the present disclosure for solving the technical problems is as follows: the utility model provides a centrifugal pump with cooling structure, includes the pump body, the pump body includes the pump casing, be provided with the motor in the pump body, fixed mounting has motor housing and motor inner shell in the pump body, motor housing is the insulating layer, the motor sets up in motor inner shell, form cooling channel between the inner wall of pump casing and the motor housing, cooling channel is used for cooling down for the motor, the pump body is provided with the water inlet, cooling channel and water inlet intercommunication, water gets into cooling channel by the water inlet.

As a preferred embodiment, the motor outer shell is a plastic layer and the motor inner shell is a metal layer.

As a preferred embodiment, the motor is provided with a motor front cover and a motor rear cover at two ends respectively, a transmission shaft of the motor penetrates through the motor front cover, and at least one first sealing piece is arranged between the transmission shaft and the motor front cover and used for preventing water from entering the motor.

Preferably, the number of the first sealing members is two, and the two first sealing members can effectively prevent water from entering the motor.

As the preferred implementation mode, the pump body is also provided with a water outlet, the water inlet and the water outlet are arranged on the same side of the motor, an impeller is arranged between the water inlet and the motor front cover, water enters from the water inlet, a part of water enters into the cooling channel under the action of the impeller, and a part of water is thrown out from the water outlet.

As a preferred implementation mode, the edge of the motor front cover is provided with a water inlet hole, and water enters the pump body from the water inlet hole and enters the cooling channel through the water inlet hole.

As a preferred embodiment, a second seal is provided between the motor housing and the pump housing, said second seal serving to prevent water from leaking out of the pump housing from the cooling channel.

As a preferred embodiment, a third sealing member is arranged between the motor inner shell and the transmission shaft, and the third sealing member is used for preventing water from entering the motor.

The first sealing member and the third sealing member are all in order to prevent that water from getting into the motor, and first sealing member sets up between transmission shaft and motor protecgulum, and this is close to the water inlet, in order to further reduce the risk that water got into the motor, set up the third sealing member between motor inner shell and transmission shaft, strengthen the inside leakproofness of pump body, prevent that water from getting into the motor after causing the damage to the motor.

As a preferred embodiment, a fourth sealing member is arranged at the joint of the motor rear cover and the transmission shaft.

As a preferred embodiment, the third seal and the fourth seal are both O-rings.

As a preferred embodiment, the bottom of the pump body is also provided with a base, and the base is connected with the pump body through bolts.

In a preferred embodiment, the motor is a dc motor.

Compared with the existing product, the water enters the cooling channel after the impeller acts, so that the impact and pressure on the motor are reduced, and the motor efficiency can be improved; the centrifugal pump with the cooling structure provided by the utility model has the advantages of simpler structure and lower cost; the motor is provided with motor housing and motor inner shell outward, effectively prevents the water and the motor direct contact of cooling channel, causes the damage to the motor, and the motor housing has further guaranteed the pump body safer at the during operation for the setting of insulating layer.

Drawings

The utility model will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the utility model. Moreover, unless specifically indicated otherwise, the drawings are merely schematic representations, not necessarily to scale, of the compositions or constructions of the described objects and may include exaggerated representations.

FIG. 1 is a schematic diagram of a centrifugal pump with a cooling structure of the present disclosure;

fig. 2 is a cross-sectional view of a centrifugal pump having a cooling structure of the present disclosure.

Reference numerals illustrate:

1. a pump body; 2. a water inlet; 3. a water outlet; 4. a motor front cover; 5. an impeller; 6. a pump housing; 7. a motor rear cover; 8. a motor; 9. a motor housing; 10. an inner housing of the motor; 11. a cooling channel; 12. a transmission shaft; 13. a first seal; 14. a second seal; 15. a third seal; 16. and a fourth seal.

Detailed Description

In order to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail, clearly and completely with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present disclosure.

It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.

As shown in fig. 1-2, the present disclosure provides a centrifugal pump with cooling structure, including pump body 1, pump body 1 includes pump case 6, be provided with motor 8 in the pump body 1, fixed mounting has motor shell 9 and motor inner shell 10 in the pump body 1, motor shell 9 is the insulating layer, motor 8 sets up in motor inner shell 10, form cooling channel 11 between the inner wall of pump case 6 and motor shell 9, cooling channel 11 is used for cooling down for motor 8, pump body 1 is provided with water inlet 2, cooling channel 11 communicates with water inlet 2, water gets into cooling channel 11 by water inlet 2. Specifically, here motor 8 is direct current motor, and motor shell 9 is the plastic layer, and motor inner shell 10 is the metal level, and the plastics matter is light, and the chemistry is stable, can not rust, and impact resistance is good and processing cost is low, and motor shell 9 sets up to the plastic layer, can effectively play protection and waterproof effect, and the weight of the pump body 1 itself can not obviously be increased to the quality light.

Further, the motor 8 is provided with motor protecgulum 4 and motor protecgulum 7 respectively in both ends, and motor 8's transmission shaft 12 passes motor protecgulum 4, is provided with at least one first sealing member 13 between transmission shaft 12 and the motor protecgulum 4, and first sealing member 13 is the sealing washer commonly used in the pump body 1 for prevent that water from getting into motor 8. Preferably, the number of the first sealing members 13 is two, and the two first sealing members 13 can more effectively prevent water from entering the motor 8.

The pump body 1 is also provided with a water outlet 3, the water inlet 2 and the water outlet 3 are arranged on the same side of the motor 8, an impeller 5 is arranged between the water inlet 2 and the motor front cover 4, water enters from the water inlet 2, a part of water enters into the cooling channel 11 under the action of the impeller 5, and a part of water is thrown out from the water outlet 3. Specifically, the edge of the motor front cover 4 is provided with a water inlet hole, and water enters the pump body 1 from the water inlet 2 and enters the cooling channel 11 through the water inlet hole.

It is noted that a second seal 14 is provided between the motor housing 9 and the pump housing 6, the second seal 14 being used to prevent water from leaking out of the pump housing 6 from the cooling channel 11. Further, a third seal 15 is provided between the motor inner housing 10 and the drive shaft 12, the third seal 15 being for preventing water from entering the motor 8. The first sealing element 13 and the third sealing element 15 are used for preventing water from entering the motor 8, the first sealing element 13 is arranged between the transmission shaft 12 and the motor front cover 4, the water inlet 2 is close to the position, the third sealing element 15 is arranged between the motor inner shell 10 and the transmission shaft 12 for further reducing the risk of water entering the motor 8, the tightness of the inside of the pump body 1 is enhanced, and the damage to the motor after the water enters the motor is prevented.

In another embodiment of the present disclosure, a fourth seal 16 is provided at the junction of the motor rear cover 7 and the drive shaft 12.

Preferably, the third seal 15 and the fourth seal 16 are both O-rings.

In another embodiment of the present disclosure, a base is further provided at the bottom of the pump body 1, and the base is connected with the pump body 1 through bolts.

When the centrifugal pump with the cooling structure is used, water enters from the water inlet 2, then, part of the water is thrown out from the water outlet 3 under the action of the centrifugal force of the impeller 5, part of the water enters the cooling channel 11, the motor 8 is immersed in the cooling channel 11, heat generated by the motor 8 can be timely and effectively taken away, and the motor is not easy to enter water.

The foregoing has outlined rather broadly the more detailed description of the utility model in order that the detailed description of the utility model that follows may be better understood, and in order that the present utility model may be better understood. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims

1. The utility model provides a centrifugal pump with cooling structure, its characterized in that, including pump body (1), pump body (1) are including pump case (6), be provided with motor (8) in pump body (1), fixed mounting has motor housing (9) and motor inner shell (10) in pump body (1), motor housing (9) are the insulating layer, motor (8) set up in motor inner shell (10), form cooling channel (11) between the inner wall of pump case (6) and motor housing (9), cooling channel (11) are used for cooling motor (8), pump body (1) are provided with water inlet (2), cooling channel (11) and water inlet (2) intercommunication, water gets into cooling channel (11) by water inlet (2).

2. Centrifugal pump with cooling structure according to claim 1, characterized in that the motor outer shell (9) is a plastic layer and the motor inner shell (10) is a metal layer.

3. Centrifugal pump with cooling structure according to claim 1, characterized in that the motor (8) is provided with motor front cover (4) and motor rear cover (7) respectively at both ends, the transmission shaft (12) of motor (8) passes motor front cover (4), is provided with at least one first sealing member (13) between transmission shaft (12) and motor front cover (4), first sealing member (13) is used for preventing water from getting into motor (8).

4. A centrifugal pump with a cooling structure according to claim 3, characterized in that the pump body (1) is further provided with a water outlet (3), the water inlet (2) and the water outlet (3) are arranged on the same side of the motor (8), an impeller (5) is arranged between the water inlet (2) and the motor front cover (4), water enters from the water inlet (2), a part of water enters the cooling channel (11) under the action of the impeller (5), and a part of water is thrown out from the water outlet (3).

5. The centrifugal pump with the cooling structure according to claim 4, wherein the edge of the motor front cover (4) is provided with a water inlet hole, and water enters the pump body (1) from the water inlet (2) and enters the cooling channel (11) through the water inlet hole.

6. Centrifugal pump with a cooling structure according to claim 1, characterized in that a second seal (14) is arranged between the motor housing (9) and the pump housing (6), which second seal (14) is intended to prevent water from leaking out of the pump housing (6) from the cooling channel (11).

7. A centrifugal pump with a cooling structure according to claim 3, characterized in that a third seal (15) is arranged between the motor inner housing (10) and the drive shaft (12), said third seal (15) being intended to prevent water from entering the motor (8).

8. Centrifugal pump with cooling structure according to claim 7, characterized in that the connection of the motor rear cover (7) and the drive shaft (12) is provided with a fourth seal (16).

9. Centrifugal pump with cooling structure according to claim 8, characterized in that the third seal (15) and the fourth seal (16) are O-rings.

10. Centrifugal pump with cooling structure according to claim 1, characterized in that the bottom of the pump body (1) is also provided with a base, which is connected with the pump body (1) by means of bolts.