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Reusable liquid coupling fusible plug

A fluid coupling and fusible plug technology, applied in clutches, clutches, fluid clutches, etc., can solve the problems of loss of safety protection, inconvenient maintenance, and low operability of fluid couplings. , to achieve the effect of improving operability, easy maintenance and convenient use

Inactive Publication Date: 2015-01-14
CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a reusable fusible plug of a hydraulic coupling to solve the problem that the existing fusible plug cannot be reused after completing the temperature protection function when the hydraulic coupling is overloaded, and needs to be replaced with a new fusible plug , causing the problem of low operability of the hydraulic coupling, and the problem of accidents caused by the loss of safety protection of the hydraulic coupling due to inconvenient maintenance work

Method used

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  • Reusable liquid coupling fusible plug
  • Reusable liquid coupling fusible plug

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Embodiment Construction

[0010] Such as figure 2 As shown, the reusable fluid coupling fusible plug is composed of fusible plug seat body 1, drain valve 2, ferromagnetic body I 3, valve seat 4, ferromagnetic body II 5; fusible plug seat body 1 is preferably used It has certain strength and is made of non-ferromagnetic materials such as stainless steel and copper. The head has a polygonal outer contour (regular hexagon, regular quadrilateral), so that it is convenient to screw the fusible plug to install or remove the fusible plug. The outside of the bottom is outer The thread is used for installing on the housing of the fluid coupling; the upper middle part of the seat body 1 is provided with a leakage through hole, the middle part is a circular hole, and the lower part is an internal thread.

[0011] The drain valve 2 is preferably made of non-ferromagnetic materials with certain strength and made of stainless steel, copper, etc., and is installed in the central circular hole of the fusible plug seat b...

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Abstract

The invention relates to the technical field of constant filling liquid coupling temperature protection, in particular to a reusable liquid coupling fusible plug which is used for overcoming the defect that an existing constant filling liquid coupling can not be reused after being subjected to overload fusible alloy melting decompression. The ' Curie Effect' principle is applied, and a ferromagnetic material with a Curie point as a standard temperature is fixedly arranged in a valve core and a valve base, so that the fusible plug is in a normally-closed state; the valve core is opened and closed respectively above and below a protective point temperature, so that a transmission fluid in the inner cavity of the coupling is controlled to be rapidly discharged when the temperature is up to the limit; after cooling is finished, a closed working cavity is formed at the inner cavity of the coupling. The temperature protection function of the fusible plug during system overload can be realized; after halt for cooling is performed, fusible plug is not needed to be replaced, as long as a working medium is injected, the system can be started, and the reusable liquid coupling fusible plug is reusable and can be used for improving the operability of a liquid coupling product.

Description

Technical field [0001] The invention relates to the technical field of safety protection of a moment-limiting hydraulic coupling, and is a reusable temperature protection device used for the overload temperature protection of a hydraulic coupling, and specifically is a reusable hydraulic coupling The device has a fusible plug. Background technique [0002] Mine water medium hydraulic couplings are mainly used in the drive system of scraper conveyors and crushers. Due to their operating conditions such as frequent starting, heavy load, and large starting inertia, the use environment is harsh and often occurs Overload phenomenon, every time you need to shut down for maintenance, replace with a new fusible plug, and start the system after injecting the working medium. Because the water-medium hydraulic coupling is installed in the coupling cover, replace the fusible plug on the narrow working surface of the well , The operation is very difficult, so in order to reduce the operating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D33/18
Inventor 刘彪刘海江刘青范国杰
Owner CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
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