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Combination spring for water seal, water seal and engine water pump

A combined spring and water seal technology, which is used in machines/engines, liquid fuel engines, components of pumping devices for elastic fluids, etc. It can prolong the service life, improve the production efficiency and reduce the wear and tear.

Active Publication Date: 2021-02-23
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the deformation force of the spring decreases, the surface pressure between the moving ring and the static ring of the water seal will become smaller, and the sealing performance of the water seal will be poor, resulting in water leakage.
If the spring force is too large, the surface pressure between the moving ring and the static ring of the water seal will be too large, and when the moving ring rotates, the wear between the two will accelerate, resulting in a shorter life of the water seal.
[0004] The spring remains basically unchanged at the predetermined value, and the deformation of the corresponding spring is difficult to adjust
At the same time, because the spring is difficult to control and maintains a constant deformation for a long time, the water seal structure is prone to water leakage or short life.

Method used

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  • Combination spring for water seal, water seal and engine water pump
  • Combination spring for water seal, water seal and engine water pump
  • Combination spring for water seal, water seal and engine water pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, a combined spring for water seal is provided, which is mainly used in the water seal of the engine water pump to solve the problem of using a type of spring in the water seal when adjusting the surface pressure between the moving ring 3 and the static ring 4 , The deformation of the spring is not easy to adjust. And even after the adjustment, after using for a period of time, due to the influence of factors such as the spring itself and the working vibration, the problem of poor sealing effect or serious wear of the two occurs again.

[0044] Such as figure 1 As shown, the combined spring for the water seal includes a first spring 1 and a second spring 2 connected to one end of the first spring 1 , and the first spring 1 and the second spring 2 are arranged coaxially.

[0045] After the first spring 1 and the second spring 2 are compressed, the elastic force of the combined spring for the water seal remains basically constant within the preset compr...

Embodiment 2

[0057] On the basis of the first embodiment above, as Figure 4 As shown, this embodiment also provides a water seal, including the combined spring for the water seal in the first embodiment above, and also includes a fixing seat and a transmission seat. The water seal in this embodiment includes a first fixing seat 11, a second Two transmission seats 12 , a first support seat 13 , a second support seat 14 , a bellows 15 and a gasket 16 . Wherein, the second transmission seat 12 and the first support seat 13 can be an integral structure as a transmission seat, and the second fixing seat 11 and the second support seat 14 can be an integral structure as a fixing seat. The second transmission seat 12 , the first support seat 13 , the bellows 15 and the second support seat 14 may also be integrated as a transmission seat, and the first fixed seat 11 may be a fixed seat.

[0058] The second transmission seat 12 in this embodiment is cylindrical, and the second transmission seat 12...

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Abstract

The invention relates to the technical field of engine water pumps, and discloses a combined spring for a water seal, a water seal and an engine water pump. The combined spring for the water seal includes a first spring and a second spring connected to one end of the first spring, the first spring and the second spring are arranged coaxially; the first spring and the second spring After the spring is compressed, the elastic force of the combined spring for the water seal remains basically constant within the preset compression range. The invention solves the problems of the existing water seal structure, which are prone to water leakage and short service life.

Description

technical field [0001] The invention relates to the technical field of engine water pumps, in particular to a combined spring for a water seal, a water seal and an engine water pump. Background technique [0002] The water seal is the key sealing part of the cooling pump in the engine. The elastic part in the water seal used in the engine water pump is generally a wave spring or a cylindrical coil spring. The force of the above spring acts on the static ring or the moving ring, so that the moving ring It fits with the static ring to ensure that the water pump does not leak when it is working. [0003] The elastic force of the cylindrical helical spring or the wave spring in the above-mentioned water seal structure changes with the change of the deformation of the spring. If it is necessary for the static ring and the dynamic ring to maintain a sealed state, it is necessary for the force of the spring to act on the static ring or the dynamic ring to remain at a predetermined...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04D29/12
CPCF04D29/126
Inventor 张志权董方龙李寒寒刘井年崔璨
Owner WEICHAI POWER CO LTD