Electric valve and assembly method therefor
AssigneeZhejiang Sanhua Automotive Components Co., Ltd.
InventorsXingkui Zhang, Wei Zhang, Yunzhi Lan, Zhenshan Zhu
Life of this patent
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Abstract
An electric valve and an assembly method therefor. The provision of multilayered sealing of a first sealing element, a second sealing element, and a sealing medium located between the first sealing element and the second sealing element along the axial direction of a valve stem is conducive to restricting outward leakage of a fluid along the axial direction of the valve stem.
Claims20
An assembly method for an electric valve, wherein the electric valve comprises a dynamic sealing member and a valve stem, the dynamic sealing member comprises a first end cover, a second end cover, a connecting seat, a first sealing member and a second sealing member, and the assembly method for the electric valve comprises the following steps:
- arranging the first sealing member in a first chamber of the connecting seat, arranging the second sealing member in a second chamber of the connecting seat, and press-fitting and fixing the first end cover and the second end cover respectively to the connecting seat assembled with the first sealing member and the second sealing member with interference;
- and
- assembling the valve stem with the dynamic sealing member in a sealing medium, and pushing the valve stem to pass through the dynamic sealing member, so that a first stem portion of the valve stem is higher than the first end cover, the first sealing member is pressed between a second stem portion of the valve stem and the connecting seat, and the second sealing member is pressed between the second stem portion of the valve stem and the connecting seat.
An electric valve, comprising a valve stem, a first sealing groove, a second sealing groove, a first sealing member and a second sealing member, wherein part of the first sealing member is located in a first groove chamber formed by the first sealing groove, the first sealing member is pressed between the valve stem and the first sealing groove, part of the second sealing member is located in a second groove chamber formed by the second sealing groove, and the second sealing member is pressed between the valve stem and the second sealing groove, wherein the electric valve further comprises a plunger, the valve stem comprises an accommodating chamber and a first through hole, the first through hole extends through the valve stem, the first through hole is in communication with the accommodating chamber, at least part of the plunger is located in the accommodating chamber, the plunger is sealed to the valve stem, the first through hole is located between the first sealing member and the second sealing member, a sealing chamber is formed by the plunger, the valve stem, the first sealing groove, the second sealing groove, the first sealing member and the second sealing member, a sealing medium is filled in the sealing chamber, and part of the sealing medium is located between the first sealing member and the second sealing member.
Dependencies are inferred from the claim text.