CN203335099U - Combined seal safety valve with rated flow of 125 L/min - Google Patents
Combined seal safety valve with rated flow of 125 L/min Download PDFInfo
- Publication number
- CN203335099U CN203335099U CN2013203908438U CN201320390843U CN203335099U CN 203335099 U CN203335099 U CN 203335099U CN 2013203908438 U CN2013203908438 U CN 2013203908438U CN 201320390843 U CN201320390843 U CN 201320390843U CN 203335099 U CN203335099 U CN 203335099U
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- valve
- spring
- valve body
- swivel nut
- safety valve
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Abstract
A combined seal safety valve with the rated flow of 125 L/min comprises a valve body, a valve shell, a spring seat, a spring and a pressure-regulating screw. A valve cavity is formed in the valve body; a row of unloading holes are formed in a valve element; a swivel nut serves as an assembling standard piece, so that a combined seal, a guiding sleeve and the valve element are sequentially arranged in the swivel nut; the assembled swivel nut is installed in the valve body; the swivel nut and the valve body are tightly screwed and connected through threads; a row of liquid discharging holes are formed in the valve shell; the spring seat, the spring and the pressure-regulating screw are arranged in the valve shell; the two ends of the spring abut against the spring seat and the pressure-regulating screw respectively; the valve body and the valve shell are fixed through threads; the valve element is in contact with the spring seat. The combined seal safety valve with the rated flow of 125 L/min is reliable in performance, compact is structure, large in flow, rapid in dynamic response, long in service life, and capable of guaranteeing the constant-resistance operating characteristic and the contractibility of a supporting post of a hydraulic support of a fully mechanized coal mining face.
Description
Technical field
The utility model relates to a kind of safety valve, and referring in particular to a kind of metered flow for the coal mine fully-mechanized mining working hydraulic support is 125L/min compound seal safety valve.
Background technology
The structure of safety valve is varied in the prior art." a kind of safety valve that is 40MPa for nominal pressure " (ZL200520003856.0 as the Chinese patent announcement, the day for announcing: 2006.6.28), it comprises valve casing and valve body, have spout hole on valve casing and sealed by gum cover, put into successively valve seat, spool, tighten valve body from the valve casing right-hand member, valve body port arranges strainer and is fixed by circlip, and the overflow aperture is arranged on spool, from valve casing left end loading spring seat, spring successively, be screwed into voltage regulation screw.Safety valve is the critical component of protection hydraulic support safety, and performance must be reliable.Along with the development of comprehensive mechanical coal mining cause, due to safety valve structure relative complex in the past, dynamic response is slow, and application life is short, when top board carrys out surge, often makes the damage of components such as column, back timber, affects down-hole and normally mines.
Summary of the invention
It is 125L/min compound seal safety valve that the purpose of this utility model is to provide a kind of metered flow, its dependable performance, compact conformation, flow is large, dynamic response is fast, and long service life can guarantee that the pillar of coal mine fully-mechanized mining working hydraulic support has constant-resistance operating characteristic and contractibility.
For achieving the above object, the solution that the utility model is taked is: a kind of metered flow is 125L/min compound seal safety valve, it comprises valve body, valve casing, spring base, spring, voltage regulation screw, have a valve pocket on valve body, spool is provided with a disposing and carries hole, take swivel nut as the reference for assembling part combination sealing of packing into successively, guide pin bushing and spool, by after assembling the swivel nut valve body of packing into, swivel nut and valve body are threaded connection to be tightened, valve casing is provided with several rows of liquid hole, be provided with spring base in valve casing, spring and voltage regulation screw, both ends of the spring withstands respectively spring base and voltage regulation screw, valve body is fixed with screw thread and valve casing, spool contacts with spring base.
This safety valve such as protects at jack cavity of resorption with balance, wall supporting, side is connected, under making to live post, the roof weighting of jack work contracts, when jack cavity of resorption fluid pressure surpasses spring pressure, spool moves right under pressure promotes, and on spool, the unloading hole moves past compound seal, and high-pressure work liquid flows out from spool unloading hole, through the valve casing outage, discharge, the working fluid pressure of jack cavity of resorption is reduced, and when jack cavity of resorption hydraulic coupling is less than spring pressure, valve core reset recovers original sealing state.Its dependable performance, mechanism's compactness, flow is large, and dynamic response is fast, can guarantee that the jack of coal mine fully-mechanized mining working hydraulic support has constant-resistance operating characteristic and contractibility.
The accompanying drawing explanation
Fig. 1 is that the master of the present embodiment looks cross-sectional view.
In figure: 1, valve body, 2, spool, 3, guide pin bushing, 4, swivel nut, 5, combination sealing, 6, valve casing, 7, spring base, 8, spring, 9, gum cover, 10, voltage regulation screw, 11, dust cover, 12, outage, 13, the unloading hole, 14, valve pocket.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof, the utility model is remake to description.
Referring to Fig. 1, a kind of metered flow is 125L/min compound seal safety valve, it comprises valve body 1, valve casing 6, spring base 7, spring 8, voltage regulation screw 10, have a valve pocket 14 on valve body 1, spool 2 is provided with a disposing and carries hole 13, take swivel nut 4 as the reference for assembling part combination sealing 5 of packing into successively, guide pin bushing 3 and spool 2, by after assembling swivel nut 4 valve body 1 of packing into, swivel nut 4 is threaded connection and tightens with valve body 1, valve casing 6 is provided with several rows of liquid hole 12, be provided with spring base 7 in valve casing 6, spring 8 and voltage regulation screw 10, spring base 8 and voltage regulation screw 10 are withstood respectively in spring 8 two ends, valve body 1 use screw thread and valve casing 6 are fixing, spool 2 contacts with spring base 7.
Referring to Fig. 1, described valve casing 6 is connected with dust cover 11 by plastic buckle.
Referring to Fig. 1, cover gum cover 9 on described outage 12, gum cover 9 by the fluted shaft on valve casing 6 to fixing.
Claims (3)
1. a metered flow is 125L/min compound seal safety valve, it comprises valve body (1), valve casing (6), spring base (7), spring (8), voltage regulation screw (10), it is characterized in that: have a valve pocket (14) on valve body (1), spool (2) is provided with a disposing and carries hole (13), take swivel nut (4) as the reference for assembling part combination sealing (5) of packing into successively, guide pin bushing (3) and spool (2), by after assembling swivel nut (4) valve body (1) of packing into, swivel nut (4) is threaded connection and tightens with valve body (1), valve casing (6) is provided with several rows of liquid hole (12), be provided with spring base (7) in valve casing (6), spring (8) and voltage regulation screw (10), spring base (8) and voltage regulation screw (10) are withstood respectively in spring (8) two ends, valve body (1) is fixing with screw thread and valve casing (6), spool (2) contacts with spring base (7).
2. a kind of metered flow according to claim 1 is 125L/min compound seal safety valve, it is characterized in that: described valve casing (6) is connected with dust cover (11) by plastic buckle.
3. a kind of metered flow according to claim 1 is 125L/min compound seal safety valve, it is characterized in that: the upper gum cover (9) that covers of described outage (12), gum cover (9) by the fluted shaft on valve casing (6) to fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203908438U CN203335099U (en) | 2013-06-25 | 2013-06-25 | Combined seal safety valve with rated flow of 125 L/min |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203908438U CN203335099U (en) | 2013-06-25 | 2013-06-25 | Combined seal safety valve with rated flow of 125 L/min |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203335099U true CN203335099U (en) | 2013-12-11 |
Family
ID=49703777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203908438U Expired - Lifetime CN203335099U (en) | 2013-06-25 | 2013-06-25 | Combined seal safety valve with rated flow of 125 L/min |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203335099U (en) |
-
2013
- 2013-06-25 CN CN2013203908438U patent/CN203335099U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FENGLONG HIGH-TECH HYDRAULIC CO., LTD. Free format text: FORMER NAME: FENGLONG HYDRAULIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee after: FNORE HIGH-TECH HYDRAULIC CO.,LTD. Address before: Nineteen Yueqing Economic Development Zone, Zhejiang, Wei Road, 325600 Patentee before: Fenglong Forging Elements Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |
|
| CX01 | Expiry of patent term |