CN2190191Y - 一种随动式气缸端面密封膜片 - Google Patents

一种随动式气缸端面密封膜片 Download PDF

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Publication number
CN2190191Y
CN2190191Y CN 94227015 CN94227015U CN2190191Y CN 2190191 Y CN2190191 Y CN 2190191Y CN 94227015 CN94227015 CN 94227015 CN 94227015 U CN94227015 U CN 94227015U CN 2190191 Y CN2190191 Y CN 2190191Y
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Prior art keywords
piston
face
utility
model
diaphragm
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Expired - Fee Related
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CN 94227015
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杨原茂
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KETAAI CLINICAL ENGINEERING DEVELOPMENT CENTRE CHENGDU
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KETAAI CLINICAL ENGINEERING DEVELOPMENT CENTRE CHENGDU
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Priority to CN 94227015 priority Critical patent/CN2190191Y/zh
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  • Reciprocating Pumps (AREA)

Abstract

本实用新型是对一种封闭气缸端面的随动式密 封膜片的改进。具有一与气缸端面相配合的外缘边 和一与活塞端面固接的中部连接面,本实用新型的特 征是其外缘边与中部连接面之间的环形带为一呈回 折状的柔性环形带。利用该呈回折状的柔性环状带 的自然伸延来满足活塞的运动行程,使膜片无附加力 作用于活塞,有利于活塞的平稳工作,处于自然形变 中的膜片寿命也可得以延长。

Description

本实用新型是对一种封闭气缸端面的随动式密封膜片的改进。
现有一种气泵,其气缸的一端面采用一平面状膜片来密封,该膜片的外圆周边与气缸端面环密封固接,膜片的中部与活塞的一端面固接,活塞运动时则带动膜片并强行使之发生拉伸形变而随活塞一起运动。这种以强行使膜片产生拉伸形变来满足活塞行程要求的方式对膜片材料的伸缩特性要求高,强行形变对其寿命影响大。同时,强行形变时产生的张力也会作用于活塞而影响活塞运动的平稳性。
本实用新型的目的是克服现有技术的上述缺点,提供一种对活塞的运行无影响、寿命长的随动式气缸端面密封膜片。
本实用新型的目的是通过将膜片本体上的相对于泵体内缘与活塞外缘之间的环形带设计成一呈迴折状的柔性环形带这一技术方案来实现的。工作时活塞来回运动的行程距离由膜片的呈迴折状的柔性环形带的自然伸延来满足,从而使膜片处于自然形变状态,无张力产生,因而也不影响活塞的运行状况。
本实用新型将膜片的强行形变改进为自然形变,可降低对膜片材料的要求,降低原料成本;同时也可使其寿命提高。仅随活塞的运动而自然伸延、回缩的封闭膜片,无任何附加力作用于活塞,有利于活塞的平稳工作。可替代现有的各种泵上用的平板状随动式气缸端面密封膜片。
下面结合附图给出本实用新型的实施例。
图1为本实用新型的结构示意图
图2为图1的右视图
如图1、2所示,本实施例中的封密膜片具有一个与气缸端面环1配合固接的外缘边2,中部5与活塞3固接,4为中部与外缘边之间的呈迴折状的柔性环形带。

Claims (1)

1、一种随动式气缸端面密封膜片,具有一与气缸端面相配合的外缘边和一与活塞端面固接的中部连接面,其特征是所述的外缘边与中部连接面之间的环形带为一呈迴折状的柔性环形带。
CN 94227015 1994-01-07 1994-01-07 一种随动式气缸端面密封膜片 Expired - Fee Related CN2190191Y (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 94227015 CN2190191Y (zh) 1994-01-07 1994-01-07 一种随动式气缸端面密封膜片

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 94227015 CN2190191Y (zh) 1994-01-07 1994-01-07 一种随动式气缸端面密封膜片

Publications (1)

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CN2190191Y true CN2190191Y (zh) 1995-02-22

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CN 94227015 Expired - Fee Related CN2190191Y (zh) 1994-01-07 1994-01-07 一种随动式气缸端面密封膜片

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CN (1) CN2190191Y (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109072934A (zh) * 2016-03-18 2018-12-21 威尔斯拉里集团公司 用于泵的可调节元件的密封装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109072934A (zh) * 2016-03-18 2018-12-21 威尔斯拉里集团公司 用于泵的可调节元件的密封装置
US10895265B2 (en) 2016-03-18 2021-01-19 Weir Slurry Group, Inc. Sealing arrangement for adjustable elements of a pump

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