CN202431289U

CN202431289U - Tubular connection large flow one-way valve

Info

Publication number: CN202431289U
Application number: CN201120512533XU
Authority: CN
Inventors: 李福洪; 朱述群
Original assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Current assignee: Julong Group Wuhu Xinglong Hydraulic Co Ltd
Priority date: 2011-12-09
Filing date: 2011-12-09
Publication date: 2012-09-12
Anticipated expiration: 2021-12-09

Abstract

The utility model relates to a tubular connection large flow one-way valve which comprises a connector, a valve body and a screw sleeve. The screw sleeve is threadingly connected in the valve body. A pressure rod is disposed in the valve body. A large spring is sleeved on the pressure rod. The other end of the large spring is contacted with a liquid inlet sleeve. The screw sleeve is threadingly connected with the liquid inlet sleeve. A front end inner cavity of the liquid inlet sleeve is contacted with a large valve core to form a metal hard seal. The tubular connection large flow one-way valve is high in integrated level, high in reliability, long in service life and easy to mount and maintain, can be repaired by directly replacing insertion type hydraulic assembly, and is simple, convenient and reliable.

Description

A kind of tubular type connects the unidirectional lock of big flow

Technical field

The utility model relates to a kind of unidirectional lock, relates in particular to a kind of tubular type and connects the unidirectional lock of big flow.

Background technology

Unidirectional lock on coal mine hydraulic supporting, is used for the control of front-axle beam, passing more; At present, domestic unidirectional lock flow is little, during off-load hydraulic shock big, all can reduce each component and the bulk life time of valve; Sealing surface adopts material sealings such as valve pad or polyformaldehyde, has tiny cinder or other foreign matters on the coal mine work area unavoidably and gets in the hydraulic valve, when the pilot operated valve device opening and closing; Have impurity and be squeezed on the compressive seal, cause leakage, string liquid, adaptive capacity and application life are all not ideal enough; Traditional in addition valve group is combined by a lot of structural members; Change seal and will dismantle a lot of parts, the very inconvenience in the down-hole, a lot of problems are perplexing the operate as normal production of underground hydraulic support frame.We are through independent development, have released that flow is big, long service life, unidirectional lock easy to maintenance, and it has adopted guide's unloading way; The operating mode that can adapt to high pressure, big flow; Each sealing contact surface all adopts metal loop wire hard sealing structure simultaneously, and prolong application life greatly, and this cover core assembly is through the integrator that is threaded in addition; Realize the plug-in structure, keep in repair efficient and convenient.

The utility model content

The purpose of the utility model provides a kind of tubular type and connects the unidirectional lock of big flow,, application life high with the hydraulic shock of the unidirectional lock of column that solves prior art and adaptive capacity is low and the problem of maintenance difficult.

In order to achieve the above object, the technical scheme that the utility model adopted is:

A kind of tubular type connects the unidirectional lock of big flow, comprises joint, valve body and swivel nut, and swivel nut is screwed together in valve body; Be provided with push rod in the valve body, be with big spring on the push rod, the contact of the big spring other end puts at feed liquor; Between swivel nut and the feed liquor cover through being screwed together; Feed liquor cover front end inner chamber contacts with big valve core and forms metal hard-sealing, and big valve core inside is provided with small valve core and contacts formation metal hard-sealing pair with it, and the small valve core end is a spring.

The utility model level of integrated system height, good reliability, long service life are easy to installation and maintenance, directly repair this unidirectional lock through changing the plug-in hydraulic package, and be simple and convenient reliable.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

Below in conjunction with instance and accompanying drawing the utility model is remake description.

A kind of tubular type connects the unidirectional lock of big flow, comprises joint 1, valve body 2 and swivel nut 9, and swivel nut 9 is screwed together in valve body 2; Be provided with push rod 3 in the valve body 2, be with big spring 4 on the push rod 3, the contact of big spring 4 other ends is on feed liquor cover 5; Between swivel nut 9 and the feed liquor cover 5 through being screwed together; Feed liquor overlaps 5 front end inner chambers and contacts the formation metal hard-sealing with big valve core 6, and big valve core 6 inside are provided with small valve core 7 and contact formation metal hard-sealing pair with it, and small valve core 7 ends are spring 8.

Claims

1. a tubular type connects the unidirectional lock of big flow, comprises joint, valve body and swivel nut, and it is characterized in that: swivel nut is screwed together in valve body; Be provided with push rod in the valve body, be with big spring on the push rod, the contact of the big spring other end puts at feed liquor; Between swivel nut and the feed liquor cover through being screwed together; Feed liquor cover front end inner chamber contacts with big valve core and forms metal hard-sealing, and big valve core inside is provided with small valve core and contacts formation metal hard-sealing pair with it, and the small valve core end is a spring.