End cover for internal water-cooled centrifugal pump

Abstract

The end cover comprises a motor end cover and a pump cover arranged on one side of the motor end cover and used for installing a pump body, the side, away from the pump cover, of the motor end cover is used for being connected with a motor, a water inlet hole is formed in the side, away from the motor end cover, of the pump cover, and a water cooling hole is formed in the motor end cover; a water pipe is connected between the pump cover and the motor end cover, and two ends of the water pipe communicate with the water inlet and the water cooling hole. The centrifugal pump has the advantages that the water inlet hole is hidden inside, no pipeline needs to be installed to enable water to flow into the water inlet hole, and the centrifugal pump is neat in appearance.

Description

Technical Field

[0001] The present application relates to the field of centrifugal pump technology, and particularly to an end cover for an internally water-cooled centrifugal pump. Background Art

[0002] A water pump is a machine for transporting liquids or increasing the pressure of liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid, and is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspension emulsions, and liquid metals, etc. Different working principles of water pumps can be divided into types such as positive displacement pumps and vane pumps. A positive displacement pump uses the change in the volume of its working chamber to transfer energy; a vane pump uses the interaction between the rotating vane and water to transfer energy, and there are types such as centrifugal pumps, axial flow pumps, and mixed flow pumps.

[0003] The Chinese utility model with the patent number CN218976510U discloses a water-cooled motor, including a motor. The motor includes a front end cover, a cylinder body, and a rear end cover. A front bearing installation groove is provided in the center of the front end cover, and a front cooling chamber is provided around the front bearing installation groove in the front end cover. The front cooling chamber is penetrated with a front water inlet hole and a front water outlet hole; a rear bearing installation groove is provided in the center of the rear end cover, and a rear cooling chamber is provided around the rear bearing installation groove in the rear end cover. The rear cooling chamber is penetrated with a rear water inlet hole and a rear water outlet hole; a cooling channel is provided in the cylinder body, and the cooling channel has an inlet and an outlet. The inlet corresponds and matches with the front water outlet hole, and the outlet corresponds and matches with the rear water inlet hole. By adjusting the internal structures of the front end cover, the rear end cover, and the cylinder body itself, and setting water-cooling channels, namely the front cooling chamber, the cooling channel, and the rear cooling chamber, the bearings in the front end cover, the bearings in the rear end cover, and the motor cylinder body are cooled comprehensively. It has the advantages of small motor size, low cost, and low energy consumption.

[0004] The connection between the water outlet and the water inlet hole of a common water-cooled centrifugal pump is through a pipeline. The pipeline of the pipeline connection is exposed outside, vulnerable to damage, and relatively messy. Utility Model Content

[0005] In order to make the appearance of the centrifugal pump neat, the present application provides an end cover for an internally water-cooled centrifugal pump.

[0006] The end cover for an internally water-cooled centrifugal pump provided by the present application adopts the following technical scheme:

[0007] An end cover for an internally water-cooled centrifugal pump includes a motor end cover and a pump cover provided on one side of the motor end cover for the installation of the pump body. The side of the motor end cover away from the pump cover is used to connect to the motor. A water inlet hole is opened on the side of the pump cover facing away from the motor end cover. A water-cooling hole is opened on the motor end cover. A water pipe is connected between the pump cover and the motor end cover, and both ends of the water pipe communicate with the water inlet hole and the water-cooling hole.

[0008] By adopting the above technical solution, the water pressure in the pump body is relatively high, and the water enters the water pipe through the water inlet hole after being compressed. After the water flows into the water pipe, it flows out through the water cooling hole. The water inlet hole is hidden inside, and there is no need to install a pipe to allow the water to flow into the water inlet hole. The appearance of the centrifugal pump is neat.

[0009] Optionally, an arc-shaped water-cooling groove is provided on the side of the motor end cover facing away from the pump cover near the circumferential edge, and the water-cooling hole is located at the bottom of the arc-shaped water-cooling groove.

[0010] By adopting the above technical solution, the arc-shaped water cooling groove enables the water body to cool down and dissipate heat.

[0011] Optionally, convex arc surfaces are arranged on two opposite side walls of the arc-shaped water-cooling groove, and the convex arc surfaces on the two opposite side walls are arranged alternately.

[0012] By adopting the above technical solution, the convex curved surface improves the smoothness of water flow, increases the time that water stays in a unit area, increases the heat dissipation area, and thus improves the heat dissipation effect.

[0013] Optionally, the circumferential edge of the water inlet hole is provided with a chamfer.

[0014] By adopting the above technical solution, the chamfer increases the pressure of water when it enters the water inlet hole, thereby increasing the flow rate of the water.

[0015] Optionally, a flange is provided on the circumferential edge of the pump cover, and a plurality of fixing holes for fixing the pump body are opened on the flange.

[0016] By adopting the above technical solution, the centrifugal pump can be fixed on the ground through the fixing holes on the flange.

[0017] Optionally, the pump cover and the motor end cover are connected via a connecting block, and the connecting block is integrally formed with the water pipe.

[0018] By adopting the above technical solution, the connecting block and the water pipe are formed in one piece, and there is no need to open a separate mold, thereby reducing costs.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. The water inlet is located on the inner wall of the pump cover, the water cooling hole is located on the motor end cover, and the water pipe connects the water inlet and the water cooling hole. The water inlet is hidden inside, and there is no need to install a pipe to allow water to flow into the water inlet. The appearance of the centrifugal pump is neat;

[0021] 2. The convex arc surface increases the heat dissipation area of ​​the water body, increases the heat dissipation effect, and allows the water to flow more smoothly;

[0022] 3. The connecting block and the water pipe are integrally formed, which reduces the mold cost and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall schematic diagram of the end cover for the internal water-cooled centrifugal pump in the embodiment.

[0024] Figure 2 It is a schematic structural diagram of the end cover for the internal water-cooled centrifugal pump in the embodiment from another perspective.

[0025] Figure 3 It is an end view of the end cover for the internal water-cooled centrifugal pump in the embodiment.

[0026] Figure 4 It is Figure 3 A sectional view taken at A-A.

[0027] Explanation of reference numerals: 1, motor end cover; 101, connecting block; 2, pump cover; 3, water inlet hole; 4, water-cooling hole; 5, water pipe; 6, arc-shaped water-cooling groove; 7, convex arc surface; 8, flange; 9, fixing hole. Specific implementation mode

[0028] The following further elaborates on this application in detail with reference to the drawings and embodiments.

[0029] The embodiment of this application discloses an end cover for an internal water-cooled centrifugal pump. Referring to Figure 1 、 Figure 2 , the end cover for the internal water-cooled centrifugal pump includes a motor end cover 1 and a pump cover 2 provided on one side of the motor end cover 1 for installing the pump body. The side of the motor end cover 1 away from the pump cover 2 is used to connect to the motor. A water inlet hole 3 is opened on the side of the pump cover 2 facing away from the motor end cover 1, and a chamfer is provided on the circumferential edge of the water inlet hole 3.

[0030] Referring to Figure 2 、 Figure 3 、 Figure 4 , a water-cooling hole 4 is opened on the motor end cover 1. A water pipe 5 is connected between the pump cover 2 and the motor end cover 1, and both ends of the water pipe 5 communicate with the water inlet hole 3 and the water-cooling hole 4. An arc-shaped water-cooling groove 6 is opened on the side of the motor end cover 1 away from the pump cover 2 near the circumferential edge, and the water-cooling hole 4 is located at the bottom of the arc-shaped water-cooling groove 6. Convex arc surfaces 7 are fixed on the opposite side walls of the arc-shaped water-cooling groove 6, and the convex arc surfaces 7 on the opposite side walls are arranged staggeredly. The pump cover 2 and the motor end cover 1 are connected by a connecting block 101, and the connecting block 101 is integrally formed with the water pipe 5

[0031] Referring to Figure 1 、 Figure 2 , a flange 8 is fixed on the circumferential edge of the pump cover 2, and a plurality of fixing holes 9 for fixing the pump body are opened on the flange 8.

[0032] The implementation principle of the end cover for an internal water-cooled centrifugal pump in an embodiment of the present application is as follows: The water in the pump body is compressed and flows from the pump cover 2 into the water inlet hole 3. The water flows through the water inlet hole 3 into the water pipe 5, and then flows out of the water-cooling hole 4 into the arc-shaped water-cooling groove 6. The convex arc surface 7 of the arc-shaped water-cooling groove 6 improves the heat dissipation effect of the water, and at the same time cools down the connection part of the motor on the motor end cover 1. Subsequently, the water flows from the arc-shaped water-cooling groove 6 to the motor main body for cooling. The water inlet hole 3 is hidden inside, and there is no need to install a pipeline for the water to flow into the water inlet hole 3, so the appearance of the centrifugal pump is neat and tidy.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An end cover for an internal water-cooled centrifugal pump, comprising a motor end cover (1) and a pump cover (2) disposed on one side of the motor end cover (1) for mounting a pump body, wherein the side of the motor end cover (1) away from the pump cover (2) is used for connecting a motor, and is characterized in that: A water inlet hole (3) is provided on the side of the pump cover (2) facing away from the motor end cover (1), a water cooling hole (4) is provided on the motor end cover (1), a water pipe (5) is connected between the pump cover (2) and the motor end cover (1), and both ends of the water pipe (5) are connected to the water inlet hole (3) and the water cooling hole (4).

2. The end cover for an internally water-cooled centrifugal pump according to claim 1, characterized in that: An arc-shaped water cooling groove (6) is provided on the side of the motor end cover (1) facing away from the pump cover (2) near the circumferential edge, and the water cooling hole (4) is located at the bottom of the arc-shaped water cooling groove (6).

3. The end cover for an internal water-cooled centrifugal pump according to claim 2, characterized in that: Convex arc surfaces (7) are arranged on two opposite side walls of the arc-shaped water cooling groove (6), and the convex arc surfaces (7) on the two opposite side walls are arranged in a staggered manner.

4. The end cover for an internally water-cooled centrifugal pump according to claim 1, characterized in that: The circumferential edge of the water inlet hole (3) is provided with a chamfer.

5. The end cover for an internally water-cooled centrifugal pump according to claim 1, characterized in that: A flange (8) is provided on the circumferential edge of the pump cover (2), and a plurality of fixing holes (9) for fixing the pump body are provided on the flange (8).

6. The end cover for an internally water-cooled centrifugal pump according to claim 1, characterized in that: The pump cover (2) and the motor end cover (1) are connected via a connecting block (101), and the connecting block (101) and the water pipe (5) are integrally formed.

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