CN202579394U - Ultrahigh pressure overflow valve - Google Patents

Ultrahigh pressure overflow valve Download PDF

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Publication number
CN202579394U
CN202579394U CN 201220185822 CN201220185822U CN202579394U CN 202579394 U CN202579394 U CN 202579394U CN 201220185822 CN201220185822 CN 201220185822 CN 201220185822 U CN201220185822 U CN 201220185822U CN 202579394 U CN202579394 U CN 202579394U
Authority
CN
China
Prior art keywords
valve
valve core
spring
spring seat
seat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220185822
Other languages
Chinese (zh)
Inventor
龙良鑫
田宇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUZHOU CHANGHE HYDRAULIC MACHINERY CO Ltd
Original Assignee
LUZHOU CHANGHE HYDRAULIC MACHINERY CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUZHOU CHANGHE HYDRAULIC MACHINERY CO Ltd filed Critical LUZHOU CHANGHE HYDRAULIC MACHINERY CO Ltd
Priority to CN 201220185822 priority Critical patent/CN202579394U/en
Application granted granted Critical
Publication of CN202579394U publication Critical patent/CN202579394U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an ultrahigh pressure overflow valve which comprises a valve body, an oil inlet and an oil return port arranged in the valve body, a valve core seat arranged in the valve body, a nut arranged on the end part of the valve core seat, a spring seat connected with the valve body and a pressure regulating blind nut connected with the spring seat, wherein an inner hole is arranged in the valve core seat, the inner hole is communicated with the oil inlet, a valve core is arranged in the inner hole in a sliding manner, a spring is arranged in the spring seat, an ejector bar is arranged in the pressure regulating blind nut, two ends of the spring are respectively contacted with the valve core and the ejector bar, and a sealing ring is arranged between the valve body and the adjacent end surface of the spring seat. The ultrahigh pressure overflow valve is characterized in that annular copper gaskets are arranged outside of the seal ring and between the valve core seat and the adjacent end surface in the valve body. The sealing element has the advantages of strong loading capacity, difficulty in damage, and capability of ensuring the sealing property.

Description

The ultrahigh pressure relief valve
Technical field
The utility model relates to a kind of relief valve, especially for the relief valve under the ultrahigh pressure operating mode.
Background technique
Relief valve is widely used in the various hydraulic systems; Existing relief valve comprises valve body, is located at filler opening and return opening on the valve body, is located at valve core case in the valve body, is loaded on the nut on the valve core case end, the spring seat that connects with valve body, the pressure regulation blind nut that connects with spring seat that valve core case is provided with endoporus; This endoporus communicates with filler opening; One spool slides and is loaded in this endoporus, in spring seat, is provided with spring, in the pressure regulation blind nut, is provided with push rod; The two ends of spring contact with push rod with spool respectively, are equipped with the seal ring of rubber material between the adjacent face of valve body and spring seat and between the adjacent face in valve core case and the valve body; When system pressure was too high, hydraulic oil got into, pushes spool open, from the return opening release from filler opening; During the relief valve of this structure only is applicable to, low-pressure because between the adjacent face of valve body and spring seat and the seal ring between the adjacent face in valve core case and the valve body can't bear high pressure, be prone to explosion, produce and leak.
The model utility content
The purpose of the utility model is the above-mentioned deficiency that exists to existing technology, and a kind of ultrahigh pressure relief valve is provided, its Sealing bearing capacity by force, not fragile, can guarantee the sealability of product.
For achieving the above object; The ultrahigh pressure relief valve of the utility model; Comprise valve body, be located at filler opening and return opening on the valve body, be located at valve core case in the valve body, be loaded on the nut on the valve core case end, the spring seat that connects with valve body, the pressure regulation blind nut that connects with spring seat, valve core case is provided with endoporus, this endoporus communicates with filler opening; One spool slides and is loaded in this endoporus; In spring seat, be provided with spring, in the pressure regulation blind nut, be provided with push rod, the two ends of spring contact with push rod with spool respectively; Between the adjacent face of valve body and spring seat, be provided with seal ring, it is characterized in that between the outside of said seal ring and the adjacent face in valve core case and the valve body, being equipped with the copper packing ring of annular.
The copper packing ring that the utility model is provided with between the outside of said seal ring and the adjacent face in valve core case and the valve body; Have certain toughness, have intensity preferably again, can play the effect of sealing gasket; Its bearing capacity by force, not fragile, can guarantee the sealability of product.
Description of drawings
Fig. 1 is the utility model embodiment's a plan view.
Embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
As shown in Figure 1; This ultrahigh pressure relief valve; Comprise valve body 1, be located at filler opening 2 and return opening 3 on the valve body 1, be located at valve core case 4 in the valve body 1, be loaded on nut 5 on valve core case 4 ends, with the spring seat 6 of valve body 1 through scyewed joint, with the pressure regulation blind nut 7 of spring seat 6 through scyewed joint, valve core case 4 is provided with endoporus, this endoporus communicates with filler opening 2; One spool 8 slides and is loaded in this endoporus; In spring seat 6, be provided with spring 9, in pressure regulation blind nut 7, be provided with push rod 10, the two ends of spring 9 contact with push rod 10 with spool 8 respectively; Between the adjacent face of valve body 1 and spring seat 6, be provided with seal ring 11, between the outside of said seal ring 11 and the adjacent face in valve core case 4 and the valve body 1, be equipped with the copper packing ring 12 or 13 of annular.
The copper packing ring 12 or 13 that the utility model is provided with has certain toughness, has intensity preferably again, can play the effect of sealing gasket, its bearing capacity by force, not fragile, can guarantee the sealability of product.

Claims (1)

1. ultrahigh pressure relief valve; Comprise valve body, be located at filler opening and return opening on the valve body, be located at valve core case in the valve body, be loaded on the nut on the valve core case end, the spring seat that connects with valve body, the pressure regulation blind nut that connects with spring seat, valve core case is provided with endoporus, this endoporus communicates with filler opening; One spool slides and is loaded in this endoporus; In spring seat, be provided with spring, in the pressure regulation blind nut, be provided with push rod, the two ends of spring contact with push rod with spool respectively; Between the adjacent face of valve body and spring seat, be provided with seal ring, it is characterized in that between the outside of said seal ring and the adjacent face in valve core case and the valve body, being equipped with the copper packing ring of annular.
CN 201220185822 2012-04-27 2012-04-27 Ultrahigh pressure overflow valve Expired - Fee Related CN202579394U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220185822 CN202579394U (en) 2012-04-27 2012-04-27 Ultrahigh pressure overflow valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220185822 CN202579394U (en) 2012-04-27 2012-04-27 Ultrahigh pressure overflow valve

Publications (1)

Publication Number Publication Date
CN202579394U true CN202579394U (en) 2012-12-05

Family

ID=47248810

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220185822 Expired - Fee Related CN202579394U (en) 2012-04-27 2012-04-27 Ultrahigh pressure overflow valve

Country Status (1)

Country Link
CN (1) CN202579394U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595267A (en) * 2014-11-27 2015-05-06 宁波中意液压马达有限公司 Implanted direct relief valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104595267A (en) * 2014-11-27 2015-05-06 宁波中意液压马达有限公司 Implanted direct relief valve
CN104595267B (en) * 2014-11-27 2017-02-22 宁波中意液压马达有限公司 Implanted direct relief valve

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121205

Termination date: 20200427

CF01 Termination of patent right due to non-payment of annual fee