Valve core component for safety valve

A spool assembly and safety valve technology, which is applied in mining equipment, earth square drilling, mine roof supports, etc., can solve the problems of small discharge flow, poor unloading capacity, and large flow loss of safety valves, and achieve improved discharge The effect of increasing flow rate, improving unloading capacity, and large liquid flow rate

Inactive Publication Date: 2017-11-24
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 core component for safety valve
  • Valve core component for safety valve
  • Valve core component for safety valve

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Embodiment Construction

[0028] 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.

[0029] Such as Figure 1 to Figure 6 As shown, it is a safety valve, including a valve casing 2, a spring seat 3 and a return spring 4 arranged inside the valve casing 2, and a valve core assembly of the present invention, which includes a valve body 7, a movable The set valve core and the compression screw 5 arranged inside the valve body 7 and used to limit the valve core. The valve core includes a liquid inlet section 601 and a guide section 602 arranged in sequence along the axial direction. The liquid inlet section 601 The outer diameter of the guide section 602 is larger than the outer diam...

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PUM

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Abstract

The invention discloses a valve core component for a safety valve; the valve core component comprises a valve body, a valve core movably arranged and a compressing screw arranged in the valve body for limiting the valve core; the valve core includes a liquid incoming segment and a guide segment arranged sequentially in the axial direction; the outer diameter of the liquid incoming segment is greater than that of the guide segment, and the liquid incoming segment is provided with a liquid via hole. The valve core component according to the invention has the advantages that the valve core is axially limited via the compressing screw, the limiting structure on the valve core is positioned in the compressing screw and mates with the same, the requirement on the wall thickness of the liquid incoming segment of the valve core is lowered, the liquid incoming segment of the valve core may be provided with a large inner cavity, liquid flux of the valve core is high, drainage of the safety valve can be increased, and load-relieving 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 assembly 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 vibr...

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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