Valve element of safety valve

A safety valve and spool technology, which is applied in the field of safety valve spools, can solve the problems of poor unloading capacity, large flow loss, and small discharge flow of safety valves, so as to improve unloading capacity, large liquid flow, and The effect of increasing the drainage flow rate

Inactive Publication Date: 2017-12-22
HONGDA INTELLIGENT MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The overflow channel of the existing safety valve adopts the liquid passage hole arranged around the side wall of the valve core. The diameter of the liquid passage hole is small, resulting in a small discharge flow of the safety valve, a large flow loss, and poor unloading capacity.

Method used

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  • Valve element of safety valve
  • Valve element of safety valve
  • Valve element of safety valve

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Embodiment Construction

[0026] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present invention, and contribute to its implementation.

[0027] like Figure 1 to Figure 7 As shown, it is a safety valve, including a valve housing 2, a valve body 8, a spring seat 3 and a return spring 4 arranged inside the valve housing 2, and a valve sleeve 7 sleeved on the valve core and located inside the valve body 8 , the valve core of the present invention and the compression screw 5 arranged inside the valve body 8 and used for limiting the valve core and the valve sleeve 7 . The spool of the present invention is movable. The spool of the present invention includes a liquid inlet section 601 and a guide section 602 arranged in sequence along ...

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Abstract

The invention discloses a valve element of a safety valve. The valve element comprises a liquid incoming section and a guide section which are axially arranged sequentially, a first liquid passing hole, a second liquid passing hole, a third liquid passing hole and a fourth liquid passing hole which are axially arranged sequentially are formed in the liquid incoming section, the first liquid passing hole and the second liquid passing hole are used for guiding liquid entering the valve element to a second liquid discharging hole of the safety valve, and the third liquid passing hole and the fourth liquid passing hole are in staggered arrangement. The first liquid passing hole, the second liquid passing hole, the third liquid passing hole and the fourth liquid passing hole are in staggered arrangement, so that liquid passing flow is increased, metal performance of the valve element is improved, rigidity of the valve element is improved, so that the valve element is less prone to breaking; the valve element is large in liquid passing flow, so that increasing of liquid discharging flow of the safety valve is facilitated, and unloading capacity of the safety valve is improved.

Description

technical field [0001] The invention belongs to coal mine fully mechanized mining hydraulic support, in particular, the invention relates to a valve core of a safety valve. Background technique [0002] With the large-scale implementation and development of coal mine fully mechanized mining hydraulic supports, fully mechanized mining work has more and more stringent requirements for hydraulic supports, so there are further requirements for the safety valve of the hydraulic cylinder of the protection support, especially for the safety valve There are further requirements for the service life and reliability of the hydraulic support. When the pressure from the top of the hydraulic support causes passive force, whether the safety valve can unload in a short time, fully and stably under the condition of high pressure directly affects the service life of the support. and support security. It will not only damage seals, pipes and hydraulic components, but also cause vibration and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/16
CPCE21D23/16
Inventor 李子昂李福洪朱述群谢瑞
Owner HONGDA INTELLIGENT MACHINERY CO LTD
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