Water-cooled motor sealing structure

Abstract

The utility model discloses a water-cooled motor sealing structure, comprising a housing, two ends of the housing are respectively provided with a front end cover and a rear end cover, the side wall of the housing is internally provided with a first cavity, the side wall of the front end cover is internally provided with a second cavity, the side wall of the rear end cover is provided with a third cavity, and the first cavity, the second cavity and the third cavity are used for circulation of cooling water. The front end cover and the rear end cover are respectively communicated with the inside of the shell through connecting pipes, the front end cover and the rear end cover are respectively communicated with the outside through fixing pipes, the shell is provided with connecting holes matched with the connecting pipes, and the connecting holes are countersunk grooves. And a plurality of sinking grooves are formed in the inner side walls of the second cavity and the third cavity, so that the contact area between the cooling water and the front end cover and the contact area between the cooling water and the rear end cover can be increased, and the cooling efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to a water-cooled motor sealing structure, belonging to the technical field of water-cooled motors. Background Art

[0002] In order to improve the sealing performance of water-cooled motors and prevent water from entering the water-cooled motors due to environmental interference during use, a Chinese patent document with publication number CN207652237U discloses a water-cooled motor sealing structure, which improves the sealing performance of water-cooled motors by setting sealing members and limit members. However, the cooling water cavity is a straight cavity, and the cooling water will directly flow out when flowing through the cooling water cavity, and its contact time with the shell is short, resulting in a large cooling water flow rate while failing to take away more heat, thereby reducing the cooling efficiency. In order to solve the above problems, the utility model provides a water-cooled motor sealing structure. Utility Model Content

[0003] In view of the problems existing in the above-mentioned prior art, the utility model provides a water-cooled motor sealing structure, in which the first cavity is set as a spiral pipe, which can increase the flow length of cooling water, and a plurality of grooves are arranged on the inner walls of the second cavity and the third cavity, which can increase the contact surface between the cooling water and the front cover and the rear cover, thereby improving the cooling efficiency.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a water-cooled motor sealing structure, including a shell, a front end cover and a rear end cover are respectively installed at both ends of the shell, a rotor and a stator are installed inside the shell, the motor shaft of the motor passes through the front end cover and extends to the outside of the front end cover, a first cavity is opened inside the side wall of the shell, a second cavity is opened inside the side wall of the front end cover, and a third cavity is opened on the side wall of the rear end cover for circulating cooling water. The cooling water will flow through the first cavity, the second cavity and the third cavity when performing cooling work, the front end cover and the rear end cover are respectively communicated with the interior of the shell through connecting pipes, and the front end cover and the rear end cover are respectively communicated with the outside through fixed pipes, and the cooling water can replace the heat generated during the operation of the motor, and a connecting hole compatible with the connecting pipe is opened on the shell, and the connecting hole is a countersunk groove. When the front end cover or the rear end cover is connected to the shell, the connecting pipe will be inserted into the corresponding connecting hole.

[0005] Preferably, the first cavity is shaped as a spiral pipe, and one end of the spiral pipe is connected to the front cover through a connecting hole, and the other end is connected to the rear cover through another connecting hole. Setting the first cavity as a spiral pipe can increase the time for cooling water to flow through the shell.

[0006] Preferably, the connecting tube can produce elastic deformation, and the shape of the connecting hole is a trumpet shape that is thick on the outside and thin on the inside. The end of the connecting hole close to the center of the shell is the inner end. The trumpet shape of the connecting hole can make the connecting tube better inserted into the interior of the connecting hole during installation.

[0007] Preferably, an insert ring is fixedly connected to the inner end of the connecting tube, and a slot matched with the insert ring is provided on the side wall of the connecting hole, so as to increase the sealing between the connecting tube and the connecting hole.

[0008] Preferably, the inner size of the insert ring is larger than the outer size, and the insert ring is interference fit with the slot. The insert ring is set to the above shape, which can further improve the sealing between the connecting pipe and the connecting hole.

[0009] Preferably, the connecting pipe and the corresponding fixed pipe are circumferentially symmetrical with respect to the axis of the shell, so that the cooling water can more fully contact the front cover or the rear cover when flowing.

[0010] Preferably, the inner side walls of the second cavity and the third cavity close to the shell are both provided with a plurality of sink grooves, and the provision of the sink grooves can increase the contact area between the cooling water and the inner side walls of the second cavity and the third cavity close to the shell.

[0011] Preferably, a filter is installed inside the fixed pipe, and the filter is in an arc shape with a protrusion in the middle. The setting of the filter can prevent impurities in the cooling water from entering the first cavity, the second cavity or the third cavity and causing blockage.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The front cover and the rear cover are connected to the spiral pipe inside the shell side wall through the connecting pipe. When installing, the connecting pipe will be inserted into the connecting hole. The connecting hole is a trumpet shape with a thin inside and a thick outside, and the connecting hole is a countersunk groove, which can maintain good sealing between the front cover, the rear cover and the shell;

[0014] 2. A plug ring is fixedly connected to the connecting pipe, the inner size of the plug ring is larger than the outer size, and a slot is provided on the connecting hole, so that the connection pipe and the connecting hole can be better sealed;

[0015] 3. The first cavity is configured as a spiral pipe, and a plurality of sinks are provided on the side walls of the second cavity and the third cavity, so as to improve the cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a cross-sectional view of the utility model.

[0018] Figure 3 For this utility model Figure 2 Enlarged view of point A.

[0019] Figure 4 It is an exploded view of the connecting pipe and the connecting hole of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the sink of the utility model.

[0021] In the figure: 1, shell, 2, front cover, 3, rear cover, 4, connecting pipe, 5, connecting hole, 6, plug ring, 7, fixing pipe, 8, slot, 9, sink, 10, filter, 11, first cavity, 12, second cavity, 13, third cavity. DETAILED DESCRIPTION

[0022] The present invention is described below with specific embodiments, but is not intended to be a limitation of the present invention.

[0023] Embodiment 1

[0024] In this embodiment, a water-cooled motor sealing structure is provided, such as Figure 1 and Figure 2 As shown, it includes a shell 1, and a front cover 2 and a rear cover 3 are respectively installed at both ends of the shell 1. A rotor and a stator are installed inside the shell 1. The motor shaft of the motor passes through the front cover 2 and extends to the outside of the front cover 2. A first cavity 11 is opened inside the side wall of the shell 1, a second cavity 12 is opened inside the side wall of the front cover 2, and a third cavity 13 is opened on the side wall of the rear cover 3 for circulating cooling water. When cooling work is performed, the cooling water will flow through the first cavity 11, the second cavity 12 and the third cavity 13, so that the heat generated during the operation of the motor can be taken away to cool the motor. The front cover 2 and the rear cover 3 are communicated with the inside of the shell 1 through the connecting pipe 4 respectively. The front cover 2 and the rear cover 3 are respectively connected through The fixed pipe 7 is communicated with the outside world, and the cooling water can flow into the interior of the second cavity 12 through the fixed pipe 7 on the front end cover 2, and then flow into the interior of the first cavity 11 through the connecting pipe 4, and then flow into the interior of the third cavity 13 through the connecting pipe 4 located on the rear end cover 3, and finally flow out through the fixed pipe 7 located on the rear end cover 3, so that the heat generated during the operation of the motor can be replaced. A connecting hole 5 that is compatible with the connecting pipe 4 is opened on the shell 1, and the connecting hole 5 is a countersunk groove. When the front end cover 2 or the rear end cover 3 is connected to the shell 1, the connecting pipe 4 will be inserted into the corresponding connecting hole 5, and the connecting hole 5 and the connecting pipe 4 cooperate with each other to ensure the sealing between the front end cover 2 and the rear end cover 3 and the shell 1.

[0025] The first cavity 11 is shaped as a spiral pipe, and one end of the spiral pipe is connected to the front cover 2 through a connecting hole 5, and the other end is connected to the rear cover 3 through another connecting hole 5. Setting the first cavity 11 as a spiral pipe can increase the time for cooling water to flow through the shell 1, so that the cooling water can better take away the heat generated by the motor.

[0026] like Figure 3 and Figure 4 As shown, the connecting tube 4 can produce elastic deformation, and the shape of the connecting hole 5 is a trumpet shape that is thick on the outside and thin on the inside. The end of the connecting hole 5 close to the center of the shell 1 is the inner end. The connecting hole 5 adopts a trumpet shape, which can make the connecting tube 4 better inserted into the interior of the connecting hole 5 during installation. At the same time, after the installation is completed, the connecting hole 5 can squeeze the connecting tube 4, so that the connection between the connecting tube 4 and the connecting hole 5 is tighter.

[0027] The inner end of the connecting tube 4 is fixedly connected with an insert ring 6 , and the side wall of the connecting hole 5 is provided with a slot 8 adapted to the insert ring 6 . The arrangement of the insert ring 6 and the slot 8 can increase the sealing between the connecting tube 4 and the connecting hole 5 .

[0028] The inner size of the insert ring 6 is larger than the outer size, and the insert ring 6 and the slot 8 have an interference fit. The insert ring 6 is set to the above shape, which can further improve the sealing between the connecting pipe 4 and the connecting hole 5.

[0029] The connecting pipe 4 and the corresponding fixed pipe 7 are circumferentially symmetrical with respect to the axis of the housing 1, so that the cooling water can more fully contact the front cover 2 or the rear cover 3 when flowing, thereby better taking away the heat generated by the motor when it is working.

[0030] like Figure 5 As shown, the inner walls of the second cavity 12 and the third cavity 13 close to the shell 1 are both provided with a plurality of sink grooves 9. The provision of the sink grooves 9 can make the contact area between the cooling water and the inner walls of the second cavity 12 and the third cavity 13 close to the shell 1 larger when the cooling water flows through the second cavity 12 and the third cavity 13, thereby making the cooling effect of the cooling water better.

[0031] Embodiment 2

[0032] A filter screen 10 is installed inside the fixed pipe 7, and the filter screen 10 is an arc-shaped screen with a protrusion in the middle. The setting of the filter screen 10 can prevent impurities in the cooling water from entering the first cavity 11, the second cavity 12 or the third cavity 13 to cause blockage, thereby affecting the flow of the cooling water.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A water-cooled motor sealing structure, characterized in that: The invention comprises a shell (1), wherein a front end cover (2) and a rear end cover (3) are respectively installed at both ends of the shell (1), a first cavity (11) is provided inside the side wall of the shell (1), a second cavity (12) is provided inside the side wall of the front end cover (2), and a third cavity (13) is provided on the side wall of the rear end cover (3) for circulating cooling water, the front end cover (2) and the rear end cover (3) are respectively communicated with the interior of the shell (1) through a connecting pipe (4), the front end cover (2) and the rear end cover (3) are respectively communicated with the outside through a fixing pipe (7), and a connecting hole (5) adapted to the connecting pipe (4) is provided on the shell (1), and the connecting hole (5) is a countersunk groove.

2. A water-cooled motor sealing structure according to claim 1, characterized in that: The first cavity (11) is in the shape of a spiral pipe, and one end of the spiral pipe is connected to the front end cover (2) through a connecting hole (5), and the other end of the spiral pipe is connected to the rear end cover (3) through another connecting hole (5).

3. A water-cooled motor sealing structure according to claim 2, characterized in that: The connecting pipe (4) can produce elastic deformation, and the connecting hole (5) is in the shape of a trumpet that is thick on the outside and thin on the inside.

4. A water-cooled motor sealing structure according to claim 3, characterized in that: The inner end of the connecting tube (4) is fixedly connected with an insert ring (6), and the side wall of the connecting hole (5) is provided with a slot (8) adapted to the insert ring (6).

5. A water-cooled motor sealing structure according to claim 4, characterized in that: The size of the inner side of the insert ring (6) is larger than the size of the outer side, and the insert ring (6) and the slot (8) are interference fit.

6. A water-cooled motor sealing structure according to claim 1, characterized in that: The connecting pipe (4) and the corresponding fixed pipe (7) are circumferentially symmetrical with respect to the axis of the housing (1).

7. The water-cooled motor sealing structure according to claim 1, characterized in that: A plurality of sink grooves (9) are provided on the inner side walls of the second cavity (12) and the third cavity (13) close to the shell (1).

8. The water-cooled motor sealing structure according to claim 1, characterized in that: A filter screen (10) is installed inside the fixed pipe (7), and the filter screen (10) is in an arc shape with a convex middle.

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