CN202812327U - 阀门止回结构 - Google Patents

阀门止回结构 Download PDF

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Publication number
CN202812327U
CN202812327U CN 201220441141 CN201220441141U CN202812327U CN 202812327 U CN202812327 U CN 202812327U CN 201220441141 CN201220441141 CN 201220441141 CN 201220441141 U CN201220441141 U CN 201220441141U CN 202812327 U CN202812327 U CN 202812327U
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China
Prior art keywords
valve
valve body
rod
check structure
sealing surface
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Expired - Fee Related
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CN 201220441141
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English (en)
Inventor
顾素云
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JIANGSU TONGDA MARINE-TYPE VALVE AND PUMP CO., LTD.
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JIANGYAN TONGDA MARINE VALVE BUMP CO Ltd
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Abstract

本实用新型公开了一种阀门止回结构,包括阀杆和阀体,阀杆位于阀体的上部,呈倒T形,上部为柱状杆;阀体上设有锥形密封面,其改进之处在于:所述阀杆的下端设有与阀体上锥形密封面相配合的球形密封面,所述球形密封面表面设有耐磨层;本实用新型更进一步的改进在于:耐磨层为聚四氟乙烯复合层。本实用新型即使工作在温度、压力、开启频率过高等恶劣环境下也能长期保持完全密封。

Description

阀门止回结构
技术领域
本实用新型涉及一种阀门止回结构。
背景技术
现在市场上销售和使用的阀门止回结构种类较多,普遍存在的缺点是密封性能差,易造成介质回流,且能耗大。当阀门止回结构使用在温度、压力、开启频率过高等恶劣环境下时易出现了下列问题:一是密封圈容易老化而损坏,造成密封失效;二是阀体上的密封面长时间、高频率的在与阀杆的撞击下而损坏,导致密封失效。
发明内容
本实用新型根据现有技术的不足,提供一种即使工作在温度、压力、开启频率过高等恶劣环境下也能长期保持完全密封,可以安装在其他阀门中的阀门止回结构。
本实用新型通过下述技术方案实现技术目标。
    阀门止回结构,包括阀杆和阀体,阀杆位于阀体的上部,呈倒T形,上部为柱状杆;阀体上设有锥形密封面,其改进之处在于:所述阀杆的下端设有与阀体上锥形密封面相配合的球形密封面,所述球形密封面表面设有耐磨层。
本实用新型进一步的技术方案在于:所述耐磨层为聚四氟乙烯复合层。
本实用新型与现有技术相比,具有以下积极效果:由于阀杆下端设有与阀体上锥形密封面相配合的球形密封面,且球形密封面表面设有耐磨层,使得即使工作在温度、压力、开启频率过高等恶劣环境下也能长期保持完全密封。
附图说明
图1是本实用新型结构示意图。
具体实施方式
下面根据附图并结合实施例对本实用新型作进一步说明。
    附图所示的阀门止回结构,包括阀杆2和阀体1,阀杆2位于阀体1的上部,呈倒T形,上部为柱状杆;阀体1上设有锥形密封面6,其特征在于:阀杆2的下端设有与阀体1上锥形密封面6相配合的球形密封面4,球形密封面4表面设有耐磨层5,本实施例中,耐磨层5为聚四氟乙烯复合层。

Claims (2)

1.一种阀门止回结构,包括阀杆(2)和阀体(1),阀杆(2)位于阀体(1)的上部,呈倒T形,上部为柱状杆;阀体(1)上设有锥形密封面(6),其特征在于:所述阀杆(2)的下端设有与阀体(1)上锥形密封面(6)相配合的球形密封面(4),所述球形密封面(4)表面设有耐磨层(5)。
2.根据权利要求1所述的阀门止回结构,其特征在于: 所述耐磨层(5)为聚四氟乙烯复合层。
CN 201220441141 2012-09-02 2012-09-02 阀门止回结构 Expired - Fee Related CN202812327U (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220441141 CN202812327U (zh) 2012-09-02 2012-09-02 阀门止回结构

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220441141 CN202812327U (zh) 2012-09-02 2012-09-02 阀门止回结构

Publications (1)

Publication Number Publication Date
CN202812327U true CN202812327U (zh) 2013-03-20

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Family Applications (1)

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CN 201220441141 Expired - Fee Related CN202812327U (zh) 2012-09-02 2012-09-02 阀门止回结构

Country Status (1)

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CN (1) CN202812327U (zh)

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: JIANGSU TONGDA MARINE TYPE VALVE + PUMP CO., LTD.

Free format text: FORMER NAME: TONGDA MARINE VALVE-PUMP CO., LTD., JIANGYAN CITY

CP01 Change in the name or title of a patent holder

Address after: 225509, 6, Tongda Road, Yu Town, Taizhou City, Jiangsu, Jiangyan

Patentee after: JIANGSU TONGDA MARINE-TYPE VALVE AND PUMP CO., LTD.

Address before: 225509, 6, Tongda Road, Yu Town, Taizhou City, Jiangsu, Jiangyan

Patentee before: Jiangyan Tongda Marine Valve Bump Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130320

Termination date: 20150902

EXPY Termination of patent right or utility model