CN1828019A - Two-stage unloading pilot-controlled check valve for hydraulic support pole - Google Patents
Two-stage unloading pilot-controlled check valve for hydraulic support pole Download PDFInfo
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- CN1828019A CN1828019A CN 200610017623 CN200610017623A CN1828019A CN 1828019 A CN1828019 A CN 1828019A CN 200610017623 CN200610017623 CN 200610017623 CN 200610017623 A CN200610017623 A CN 200610017623A CN 1828019 A CN1828019 A CN 1828019A
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Abstract
The invention discloses a two-stage unload hydraulic one-way valve used in hydraulic bracket column, which comprises a valve chamber, a valve body with liquid inlet and outlet, a valve base inside said valve chamber; a big valve pin sealed matching said valve base, a recover spring, a valve sleeve connecting the end of valve rod, a metallic sealing surface between the big valve pin and said valve base; and a small valve pin sheathing the valve rod which is sealed matched with said valve base. The invention has the advantages that: it can meet the speed demand of high-pressure big-flow (480L/min) bracket, and the demand of two-stage unload. The invention combines the valve sleeve, valve base, big valve pin, small valve pin and the recover spring as a whole, with easy installment. The invention has passed the detection of national test center of coal academy of science, to reach the standard of MT419-1995.
Description
Technical field
The present invention relates to hydraulic control one-way valve, especially relate to the two-stage unloading pilot-controlled check valve that is used for hydraulic support column.
Background technology
Use at present the seal form of the column control valve on coal mine underground hydraulic support frame generally to adopt soft sealing structure, promptly polyformaldehyde or coal such as grind No. 3 at nonmetals, anti-ly wash away, antipollution, impact resistance be poor, and application life is short; Particularly the non-integral type assembling mode that is assembled into of each component in the valve makes the installation of valve, down-hole safeguard very inconvenient.Simultaneously, along with the application of electrohydraulic control system under coal mine, advancing velocity to support requires more and more higher, the flow of column control valve has direct influence to the advancing velocity of support, and the flow of above-mentioned column control valve is 400L/min to the maximum, can not well satisfy the advancing velocity requirement of high-end product support (cylinder diameter reaches 380mm).
Summary of the invention
The object of the invention is to provide the two-stage unloading pilot-controlled check valve that is used for hydraulic support column of a kind of high-pressure high-flow, the hard sealing of plug-in.
For achieving the above object, the present invention can take following technical proposals:
The two-stage unloading pilot-controlled check valve that is used for hydraulic support column of the present invention, it comprises the valve body that offers valve pocket, liquid in-out mouth, be arranged on the valve seat in the described valve pocket, with cooperate with described valve base sealing and be set in big valve core, return spring on the valve rod, and the valve pocket that is connected with the valve rod end, it is characterized in that: the sealing surface between described big valve core and the described valve seat is a metallic sealing section; Be set with a small valve core on valve rod, described small valve core is sealed and matched with the valve support chamber that is opened on the big valve core.
The sealing surface of the valve support chamber on described small valve core and the described big valve core is the stainless steel metal sealing surface.
The invention has the advantages that the advancing velocity requirement that to satisfy high-pressure high-flow (480L/min) support, can realize two-stage unloading again.Simultaneously valve pocket, valve seat, big valve core, small valve core, return spring are linked together, form one, can realize that again the plug-in mounting mode installs, convenient for installation and maintenance; The every performance indications of this one way valve by the detection of test center of country of the coal academy of sciences, all reach " MT419-1995 " the valve for roof support People's Republic of China (PRC) industry standard.During work, when column need fall post, valve rod promoted small valve core earlier, and small valve core is opened earlier, the small valve core of high pressure liquid in the high pressure chest by opening, again by the groove on the valve rod, a part of high pressure liquid of off-load lowers pressure moment, at this moment valve rod pushes away before continuing, big valve core is opened, realized two-stage unloading, avoid the damaging impact of high-pressure high-flow liquid valve.Because big small valve core and valve seat are taked the metal hard-sealing face, improved valve body greatly anti-ly wash away, antipollution, impact resistance, prolonged valve body application life.
Fig. 1 is a structural representation of the present invention.
The specific embodiment
As shown in the figure, the two-stage unloading pilot-controlled check valve that is used for hydraulic support column of the present invention, it comprises the valve body 1 that offers valve pocket, liquid in-out mouth, be arranged on the valve seat 2 in the described valve pocket, with be sealed and matched with described valve seat 2 and be set in big valve core 4, return spring 5 on the valve rod 3, and the valve pocket 6 that is connected with valve rod 3 ends, the sealing surface between described big valve core 4 and the described valve seat 2 is the stainless steel metal sealing surface; Be set with a small valve core 7 on valve rod 3, described small valve core 7 is sealed and matched with the valve support chamber 8 that is opened on the big valve core 4, and its sealing surface is the stainless steel metal sealing surface.
Claims (2)
1, a kind of two-stage unloading pilot-controlled check valve that is used for hydraulic support column, it comprises the valve body (1) that offers valve pocket, liquid in-out mouth, be arranged on the valve seat (2) in the described valve pocket, with be sealed and matched with described valve seat (2) and be set in big valve core (4), return spring (5) on the valve rod (3), and the valve pocket (6) that is connected with valve rod (3) end, it is characterized in that: the sealing surface between described big valve core (4) and the described valve seat (2) is a metallic sealing section; Be set with a small valve core (7) on valve rod (3), described small valve core (7) is sealed and matched with the valve support chamber (8) that is opened on the big valve core (4).
2, hydraulic control one-way valve according to claim 1 is characterized in that: the sealing surface of the valve support chamber (8) on described small valve core (7) and the described big valve core (4) is the stainless steel metal sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610017623 CN1828019A (en) | 2006-04-07 | 2006-04-07 | Two-stage unloading pilot-controlled check valve for hydraulic support pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610017623 CN1828019A (en) | 2006-04-07 | 2006-04-07 | Two-stage unloading pilot-controlled check valve for hydraulic support pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1828019A true CN1828019A (en) | 2006-09-06 |
Family
ID=36946554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610017623 Pending CN1828019A (en) | 2006-04-07 | 2006-04-07 | Two-stage unloading pilot-controlled check valve for hydraulic support pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1828019A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899986A (en) * | 2010-07-30 | 2010-12-01 | 北京天地玛珂电液控制***有限公司 | Hydraulic control one-way valve |
| CN102128037A (en) * | 2011-04-08 | 2011-07-20 | 巨隆集团芜湖兴隆液压有限公司 | Plug-in mounting stand column hydraulic control one-way valve |
| CN102135003A (en) * | 2011-04-08 | 2011-07-27 | 巨隆集团芜湖兴隆液压有限公司 | Cartridge high-flow hard sealing upright post hydraulic control one-way valve |
| CN102191944A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Inserted medium flow upright post hydraulic control one-way valve |
| CN102364051A (en) * | 2011-11-14 | 2012-02-29 | 巨隆集团芜湖兴隆液压有限公司 | High-flow hydraulic control one-way valve |
| CN102364052A (en) * | 2011-11-14 | 2012-02-29 | 巨隆集团芜湖兴隆液压有限公司 | Tubular connected high-flow hydraulic control one-way valve |
| CN103410538A (en) * | 2013-08-20 | 2013-11-27 | 华煤发展科技有限公司 | Double-spool hydraulic control check valve and hydraulic support system |
| CN107387138A (en) * | 2017-09-18 | 2017-11-24 | 鸿大智能机械有限公司 | The core assembly of hydraulic control one-way valve |
-
2006
- 2006-04-07 CN CN 200610017623 patent/CN1828019A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101899986A (en) * | 2010-07-30 | 2010-12-01 | 北京天地玛珂电液控制***有限公司 | Hydraulic control one-way valve |
| CN102128037A (en) * | 2011-04-08 | 2011-07-20 | 巨隆集团芜湖兴隆液压有限公司 | Plug-in mounting stand column hydraulic control one-way valve |
| CN102135003A (en) * | 2011-04-08 | 2011-07-27 | 巨隆集团芜湖兴隆液压有限公司 | Cartridge high-flow hard sealing upright post hydraulic control one-way valve |
| CN102191944A (en) * | 2011-05-09 | 2011-09-21 | 巨隆集团芜湖兴隆液压有限公司 | Inserted medium flow upright post hydraulic control one-way valve |
| CN102364051A (en) * | 2011-11-14 | 2012-02-29 | 巨隆集团芜湖兴隆液压有限公司 | High-flow hydraulic control one-way valve |
| CN102364052A (en) * | 2011-11-14 | 2012-02-29 | 巨隆集团芜湖兴隆液压有限公司 | Tubular connected high-flow hydraulic control one-way valve |
| CN103410538A (en) * | 2013-08-20 | 2013-11-27 | 华煤发展科技有限公司 | Double-spool hydraulic control check valve and hydraulic support system |
| CN107387138A (en) * | 2017-09-18 | 2017-11-24 | 鸿大智能机械有限公司 | The core assembly of hydraulic control one-way valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20060906 |