Static sealing structure of water pump motor

Abstract

The utility model provides a water pump motor static sealing structure, which comprises an upper cap, a machine barrel and a first sealing ring, the machine barrel is provided with a sealing groove, the first sealing ring is embedded in the sealing groove, the upper cap is provided with a pressing plane, and the pressing plane abuts against the upper edge of the machine barrel and presses the first sealing ring into the sealing groove. The purposes that the first sealing ring is not prone to being damaged and the sealing performance is improved are achieved.

Description

Technical Field

[0001] The utility model relates to a water pump, and particularly to a static seal structure of a water pump motor. Background Art

[0002] The water pump has a motor component to drive the water pump to work.

[0003] As Figure 1 and Figure 2 shown, two annular positioning grooves 11 are formed in the side wall of the upper cap 1 of the existing motor, and an O-ring 12, that is, a sealing ring, is embedded in the positioning groove 11. The cross-section of the positioning groove 11 is square. During use, the barrel 2 is sleeved on the lower edge of the upper cap 1, and the barrel 2 is moved axially to move the barrel 2 towards the upper cap 1. The O-ring 12 is located inside the barrel.

[0004] However, during the movement of the barrel, a part of the O-ring will be cut by the upper edge of the barrel, and as the barrel moves, the O-ring will rub violently against the inner wall of the barrel and partially fall off, resulting in damage to the O-ring and affecting the sealing effect. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a static seal structure of a water pump motor, achieving the purpose of having a good sealing effect.

[0006] To solve the above technical problems, the technical solution of the utility model is: a static seal structure of a water pump motor, including an upper cap, a barrel, and a first sealing ring. A sealing groove is formed in the barrel, the first sealing ring is embedded in the sealing groove, the upper cap has a pressing plane, and the pressing plane abuts against the upper edge of the barrel and presses the first sealing ring into the sealing groove.

[0007] Implementing the above technical solution, relative movement will not occur between the first sealing ring, the barrel, and the upper cap, and the first sealing ring is not easily worn, so the first sealing ring is not easily damaged. Moreover, since the first sealing ring is pressed into the sealing groove, the first sealing ring will apply pressure to the barrel and the upper cap due to its own elasticity, keeping a good sealing property between the upper cap and the barrel.

[0008] As a preferred solution of the utility model, the barrel includes an outer barrel and a flower plate. A limiting groove is formed in the inner wall of the outer barrel, the flower plate is supported by the inner wall of the limiting groove, and a connecting inclined surface is formed on the side of the flower plate facing away from the limiting groove. The sealing groove is formed between the connecting inclined surface and the inner wall of the outer barrel.

[0009] To implement the above technical solution, place the ceiling plate in the limit groove, and a sealing groove can be formed between the connecting inclined surface and the inner wall of the outer cylinder. Place the first sealing ring in the sealing groove, and then connect the upper cap to the outer cylinder, and the first sealing ring can be pressed into the sealing groove. The installation process is convenient; and when the ceiling plate is damaged, only the ceiling plate needs to be replaced, reducing the maintenance cost.

[0010] As a preferred solution of the present utility model, the cross-section of the sealing groove is triangular.

[0011] To implement the above technical solution, when the first sealing ring is pressed, the pressure can be evenly distributed, thereby providing a more reliable sealing effect; and, the first sealing ring is easier to position and fix during installation, reducing the difficulty during the installation process.

[0012] As a preferred solution of the present utility model, the upper cap is connected with a limiting portion, and the limiting portion is sleeved outside the barrel.

[0013] To implement the above technical solution, radial movement is not likely to occur between the barrel and the upper cap, so that the first sealing ring is not easily damaged by radial acting force, prolonging the service life of the first sealing ring and improving the sealing effect.

[0014] As a preferred solution of the present utility model, it further includes an oil cylinder. A positioning groove is provided on the oil cylinder, a placement groove is provided at the corner of the positioning groove, a second sealing ring is embedded in the placement groove, and one end of the barrel away from the upper cap abuts against the inner wall of the positioning groove and presses the second sealing ring into the placement groove.

[0015] To implement the above technical solution, good sealing performance is achieved between the oil cylinder and the barrel, and the second sealing ring is not easily damaged and has a long service life.

[0016] As a preferred solution of the present utility model, the cross-section of the placement groove is fan-shaped.

[0017] To implement the above technical solution, the contact area between the placement groove and the second sealing ring is large, providing a better sealing effect; it helps to evenly distribute the pressure, reduce the local stress concentration of the second sealing ring, and prolong the service life of the second sealing ring; the second sealing ring is easier to align and fix during installation, simplifying the installation process; reduce the wear of the second sealing ring and improve the durability.

[0018] As a preferred solution of the present utility model, a protective arc surface is provided on the barrel, and the protective arc surface abuts against the second sealing ring.

[0019] To implement the above technical solution, the second sealing ring is not easily damaged, enhancing the protection effect on the second sealing ring.

[0020] As a preferred embodiment of the present utility model, the upper cap is provided with a first extension portion, the oil cylinder is provided with a second extension portion, and the first extension portion and the second extension portion are fixed by a positioning bolt.

[0021] To achieve the above technical solution, a tendency for the first extension portion and the second extension portion to move closer to each other is generated through the positioning bolt, so as to maintain good sealing performance between the upper cap and the barrel and between the barrel and the oil cylinder; the installation process is more convenient. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the position of the O-ring;

[0023] Figure 2 It is a schematic diagram of the connection structure between the barrel and the upper cap;

[0024] Figure 3 It is a schematic diagram of the structure of the present utility model;

[0025] Figure 4 It is Figure 3 The enlarged view of part A of

[0026] Figure 5 It is Figure 3 The enlarged view of part B of

[0027] Reference numerals: 1, upper cap; 11, positioning groove; 12, O-ring; 13, pressing plane; 14, sealing groove; 2, barrel; 21, outer barrel; 22, flower plate; 31, limiting groove; 32, connecting inclined surface; 4, limiting portion; 41, first sealing ring; 5, oil cylinder; 51, positioning groove; 52, placing groove; 6, second sealing ring; 61, protective arc surface; 71, first extension portion; 72, second extension portion; 73, positioning bolt. Detailed Embodiments

[0028] The following further details the specific embodiments of the present utility model in conjunction with the drawings, so that the technical solutions of the present utility model are easier to understand and master.

[0029] As Figures 3 to 5 shown, a static sealing structure of a water pump motor includes an upper cap 1, a barrel 2, and a first sealing ring 41. The barrel 2 includes an outer barrel 21 and a flower plate 22. A limiting groove 31 is provided on the inner wall of the outer barrel 21, and the flower plate 22 is placed in the limiting groove 31 and supported by the inner wall of the limiting groove 31. The upper edge of the flower plate 22 is flush with the upper edge of the outer barrel 21.

[0030] A connecting inclined surface 32 is provided on the side of the flower plate 22 facing away from the limiting groove 31, and a sealing groove 14 is formed between the connecting inclined surface 32 and the inner wall of the outer barrel 21. The cross section of the sealing groove 14 is triangular.

[0031] The first sealing ring 41 is an O-ring and is embedded in the sealing groove 14. One side of the upper cap 1 facing the barrel 2 has a pressing plane 13. The pressing plane 13 abuts against the upper edge of the barrel 2 and presses the first sealing ring 41 into the sealing groove 14, pressing the cross-section of the first sealing ring 41 into a triangular shape.

[0032] At one end of the upper cap 1 close to the barrel 2, a limiting part 4 is integrally connected. The limiting part 4 is located outside the pressing plane 13. The limiting part 4 is sleeved on the outside of the barrel 2 to play a role in limiting between the barrel 2 and the upper cap 1.

[0033] At one end of the barrel 2 far from the upper cap 1, there is an oil cylinder 5. A positioning groove 51 is provided on the oil cylinder 5, and a placement groove 52 is provided at the corner of the positioning groove 51. The cross-section of the placement groove 52 is fan-shaped. A second sealing ring 6 is embedded in the placement groove 52, and the second sealing ring 6 is an O-ring. A protective arc surface 61 is provided at one end of the outer cylinder 21 far from the upper cap 1.

[0034] One end of the barrel 2 far from the upper cap 1 abuts against the inner wall of the positioning groove 51 and presses the second sealing ring 6 into the placement groove 52, and the protective arc surface 61 abuts against the second sealing ring 6.

[0035] A first extension part 71 is integrally provided on the outer wall of the upper cap 1; a second extension part 72 is integrally provided on the outer wall of the oil cylinder 5. The first extension part 71 and the second extension part 72 are fixed by a positioning bolt 73. The positioning bolt 73 causes the first extension part 71 and the second extension part 72 to move in a direction close to each other, making the connection between the outer cylinder 21 and the second sealing ring 6 closer. At the same time, the connection between the upper cap 1 and the first sealing ring 41 is made closer.

[0036] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A static sealing structure for a water pump motor, comprising an upper cap (1), a barrel (2), and a first sealing ring (41), wherein: The barrel (2) is provided with a sealing groove (14), the first sealing ring (41) is embedded in the sealing groove (14), and the upper cap (1) is provided with a clamping plane (13), the clamping plane (13) contacts the upper edge of the barrel (2) and presses the first sealing ring (41) into the sealing groove (14).

2. A water pump motor static seal structure according to claim 1, characterized in that: The barrel (2) comprises an outer barrel (21) and a flower plate (22); a limit groove (31) is provided on the inner wall of the outer barrel (21); the flower plate (22) is supported by the inner wall of the limit groove (31); a connecting bevel (32) is provided on the side of the flower plate (22) facing away from the limit groove (31); and the sealing groove (14) is formed between the connecting bevel (32) and the inner wall of the outer barrel (21).

3. A water pump motor static seal structure according to claim 2, characterized in that: The cross section of the sealing groove (14) is triangular.

4. A water pump motor static seal structure according to claim 2, characterized in that: The upper cap (1) is connected to a limiting portion (4), and the limiting portion (4) is sleeved on the outside of the barrel (2).

5. A water pump motor static seal structure according to claim 1 or 2 or 3 or 4, characterized in that: The invention also comprises an oil cylinder (5), wherein a positioning groove (51) is provided on the oil cylinder (5), a placement groove (52) is provided at a corner of the positioning groove (51), a second sealing ring (6) is embedded in the placement groove (52), and an end of the barrel (2) away from the upper cap (1) contacts the inner wall of the positioning groove (51) and presses the second sealing ring (6) into the placement groove (52).

6. A water pump motor static seal structure according to claim 5, characterized in that: The cross section of the placement groove (52) is fan-shaped.

7. A water pump motor static seal structure according to claim 6, characterized in that: The barrel (2) is provided with a protective arc surface (61), and the protective arc surface (61) is in contact with the second sealing ring (6).

8. A water pump motor static seal structure according to claim 5, characterized in that: The upper cap (1) is provided with a first extension portion (71), and the oil cylinder (5) is provided with a second extension portion (72). The first extension portion (71) and the second extension portion (72) are fixed by a positioning bolt (73).

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