CN103291341A - Cartridge middle-flow balance bidirectional lock - Google Patents
Cartridge middle-flow balance bidirectional lock Download PDFInfo
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- CN103291341A CN103291341A CN2013102113508A CN201310211350A CN103291341A CN 103291341 A CN103291341 A CN 103291341A CN 2013102113508 A CN2013102113508 A CN 2013102113508A CN 201310211350 A CN201310211350 A CN 201310211350A CN 103291341 A CN103291341 A CN 103291341A
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- valve seat
- push rod
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Abstract
The invention discloses a cartridge middle-flow balance bidirectional lock which comprises a valve body, two valve sleeves and two sets of hydraulic components. Each hydraulic component comprises a spool, a valve seat and an ejector pin, a cavity is formed in the valve seat which is sleeved outside the ejector pin, the head of the ejector pin extends into the cavity, the head of the spool is connected with the valve seat in a sealed manner at a port, communicated with the cavity, on the valve seat, a return spring is sleeved on the ejector pin, the head of the ejector pin is provided with outer threads, a limit block with a through hole is disposed at a position, near the cavity, in the valve seat, the inner wall of the through hole is provided with inner threads matched with the outer threads of the ejector pin, the valve seat and the ejector pin are connected in a threaded manner, and the ejector pin can be screwed into the cavity in the valve seat to form the cartridge hydraulic component. Compared with the prior art, by the structure, the middle-flow balance bidirectional lock is high in system integration, convenient to mount and maintain, and can be repaired by replacing the cartridge hydraulic components.
Description
Technical field
The present invention relates to the Hydraulic Elements in the coal mine hydraulic supporting hydraulic circuit, specifically, the present invention relates to flow equilibrium reversible lock in a kind of plug-in.
Background technology
The balance reversible lock is mainly used in coal mine hydraulic supporting, controls the balance of hydraulic support jointly with operating the valve group, helps jack work.When operation valve group was in meta and external force effect structure and does not reach opening pressure of safety valve, it can make jack keep certain duty for a long time, thereby makes hydraulic support play due supporting role under external force.But the present reversible lock complex structure that uses, the part kind of valve inner is many, and the dismounting difficulty repairs also very inconvenience, particularly is subjected to spatial constraints under the coal mine, has not more and more satisfied the demand of colliery applying unit.
Summary of the invention
Technical problem to be solved by this invention provides a kind of flow equilibrium reversible lock in the plug-in simple and easy to maintenance of installing.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is: flow equilibrium reversible lock in a kind of plug-in, comprise valve body, two valve pockets and two cover hydraulic packages, two cover hydraulic packages are located at respectively in two valve pockets of valve body, two valve pockets that match with hydraulic package are located at the same side of valve body, the head seal of valve pocket, opposite side at valve body is provided with inlet and liquid outlet, hydraulic package comprises spool, valve seat and push rod, valve seat is provided with cavity body, valve seat is enclosed within the outside of push rod, the head of push rod also stretches in the cavity body of valve seat, and the port with cavity body be communicated with of the head of spool on valve seat is connected with valve base sealing, also is with return spring on push rod, head shaft at push rod is provided with external screw thread, position in the inside of valve seat near cavity body is provided with limited block, is provided with through hole at this limited block, the inwall of through hole be provided with push rod on the suitable internal thread of external screw thread, return spring one end is against on the limited block, and the other end is against on the push rod.
Between described spool and the described valve seat for being tightly connected firmly.
The head of described spool is the frustum structure, and described push rod begins to contact in the port of described valve seat with spool.
The present invention adopts technique scheme, compared with prior art, valve seat and push rod are for being threaded, push rod can screw in the interior cavity body of valve seat, form the hydraulic package of plug-in, make that the level of integrated system of whole middle flow equilibrium reversible lock is higher, be easy for installation and maintenance, can directly just can repair by changing the plug-in hydraulic package.
Description of drawings
Fig. 1 is the sectional view of middle flow equilibrium reversible lock of the present invention;
Fig. 2 is the lateral view of Fig. 1;
Fig. 3 is the sectional view of hydraulic package;
Mark among the above-mentioned figure is: 1, valve pocket; 2, hydraulic package; 21, spool; 22, valve seat; 23, return spring; 24, push rod; 25, cavity body; 26, port; 27, limited block; 3, valve body; 4, inlet; 5, liquid outlet; 6, screw plug.
The specific embodiment
Be flow equilibrium reversible lock in a kind of plug-in of the present invention as depicted in figs. 1 and 2, comprise that valve body 3, two valve pockets 1 and two cover hydraulic packages, 2, two cover hydraulic packages 2 are located at respectively in two valve pockets of valve body 3, two valve pockets are communicated with in valve body 3.Two valve pockets 1 that match with hydraulic package 2 are located at the same side of valve body 3, and the head that is positioned at valve body 3 outsides of valve pocket 1 is for sealing, and valve pocket 1 and valve body 3 are for being threaded, in the insertion valve body 3.Opposite side at valve body 3 is provided with inlet 4 and liquid outlet 5, and inlet 4 is communicated with the hydraulic package 2 on top, and liquid outlet 5 is communicated with the hydraulic package 2 of bottom.Top, bottom and the sidepiece position between two valve pockets 1 at valve body 3 is respectively equipped with two screw plugs 6, and screw plug 6 is used for blocking the oil duct that is communicated with valve pocket respectively of valve body 3 tops, bottom and sidepiece, and screw plug 6 is threaded with valve body 3.As shown in figures 1 and 3, hydraulic package 2 comprises spool 21, valve seat 22 and push rod 24, one end of valve seat 22 inserts in the valve pocket 1, the other end is against on the inwall of valve body 3, valve seat 22 is provided with cavity body 25, valve seat 22 is enclosed within the outside of push rod 24, the head of push rod 24 also stretches in the cavity body 25 of valve seat 22, spool 21 is arranged in the groove of valve pocket 1 inside, between the inwall of spool 21 and valve pocket 1, be provided with valve core spring, under the impetus of valve core spring, port 26 places and the valve seat 22 that with cavity body 25 are communicated with of the head of spool 21 on valve seat 22 is tightly connected, and also is with return spring 23 on push rod 24.In order to solve problems of the prior art, the shaft at the head place of the push rod 24 of hydraulic package 2 is provided with external screw thread, position in the close cavity body 25 in the inside of valve seat 22 is provided with limited block 27, be provided with through hole at this limited block 27, the inwall of through hole be provided with push rod 24 on the suitable internal thread of external screw thread, return spring 23 1 ends are against on the limited block 27, and the other end is against on the push rod 24.Compared with prior art, valve seat 22 and push rod 24 are for being threaded, push rod 24 can screw in the cavity body 25 in the valve seat 22, form the hydraulic package 2 of plug-in, make that the level of integrated system of whole middle flow equilibrium reversible lock is higher, be easy for installation and maintenance, can directly just can repair by changing plug-in hydraulic package 2.
For being tightly connected firmly, spool 21 adopts metal material to make, and realizes the hard sealing between valve body 3 and the valve seat 22 between the spool 21 of this balance reversible lock and the valve seat 22, sealing with respect to softwood matter, seal not only good seal performance firmly, go back ability super-pressure, prolong the application life of reversible lock.
As shown in figures 1 and 3, the head of spool 21 and be the frustum structure, the head of spool 21 no longer stretches in the cavity body 25, and 21 port 26 places at valve seat 22 of push rod 24 and spool begin to contact, the structure of spool 21 is simpler, the more compact structure of balance reversible lock integral body.In addition, the material of valve core spring and return spring 23 is carbon spring steel wires.
The operating principle of this balance reversible lock is identical with the balance reversible lock of prior art.This balance reversible lock is of a size of 135*114*34mm, and nominal flow rate is 80L/min, and nominal pressure is 50MPa.
By reference to the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (3)
1. flow equilibrium reversible lock in the plug-in, comprise valve body, two valve pockets and two cover hydraulic packages, two cover hydraulic packages are located at respectively in two valve pockets of valve body, two valve pockets that match with hydraulic package are located at the same side of valve body, the head seal of valve pocket, opposite side at valve body is provided with inlet and liquid outlet, hydraulic package comprises spool, valve seat and push rod, valve seat is provided with cavity body, valve seat is enclosed within the outside of push rod, the head of push rod also stretches in the cavity body of valve seat, the port with cavity body be communicated with of the head of spool on valve seat is connected with valve base sealing, also be with return spring on push rod, it is characterized in that: the head shaft at described push rod is provided with external screw thread, is provided with limited block in the position of the close cavity body in the inside of described valve seat, be provided with through hole at this limited block, the inwall of through hole be provided with push rod on the suitable internal thread of external screw thread, described return spring one end is against on the limited block, the other end is against on the push rod.
2. flow equilibrium reversible lock in the plug-in according to claim 1 is characterized in that: between described spool and the described valve seat for being tightly connected firmly.
3. flow equilibrium reversible lock in the plug-in according to claim 1 and 2, it is characterized in that: the head of described spool is the frustum structure, described push rod begins to contact in the port of described valve seat with spool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102113508A CN103291341A (en) | 2013-05-31 | 2013-05-31 | Cartridge middle-flow balance bidirectional lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102113508A CN103291341A (en) | 2013-05-31 | 2013-05-31 | Cartridge middle-flow balance bidirectional lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103291341A true CN103291341A (en) | 2013-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102113508A Pending CN103291341A (en) | 2013-05-31 | 2013-05-31 | Cartridge middle-flow balance bidirectional lock |
Country Status (1)
| Country | Link |
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| CN (1) | CN103291341A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803988A1 (en) * | 1988-02-10 | 1989-08-24 | Gewerk Eisenhuette Westfalia | Hydraulically operable directional control valve, preferably for hydraulic support systems and the like |
| CN200985796Y (en) * | 2006-12-22 | 2007-12-05 | 郑州恒达液压工程中心 | Plug-in mounting type bidirectional lock |
| CN202560255U (en) * | 2012-04-10 | 2012-11-28 | 巨隆集团芜湖兴隆液压有限公司 | Inserting type hard sealing bidirectional lock |
| CN202718700U (en) * | 2012-08-06 | 2013-02-06 | 巨隆集团芜湖兴隆液压有限公司 | Middle flow reversible lock |
| CN202718699U (en) * | 2012-08-06 | 2013-02-06 | 巨隆集团芜湖兴隆液压有限公司 | Large flow bidirectional lock |
| CN203308480U (en) * | 2013-05-31 | 2013-11-27 | 巨隆集团芜湖兴隆液压有限公司 | Cartridge-type medium-flow balance two-way lock |
-
2013
- 2013-05-31 CN CN2013102113508A patent/CN103291341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3803988A1 (en) * | 1988-02-10 | 1989-08-24 | Gewerk Eisenhuette Westfalia | Hydraulically operable directional control valve, preferably for hydraulic support systems and the like |
| CN200985796Y (en) * | 2006-12-22 | 2007-12-05 | 郑州恒达液压工程中心 | Plug-in mounting type bidirectional lock |
| CN202560255U (en) * | 2012-04-10 | 2012-11-28 | 巨隆集团芜湖兴隆液压有限公司 | Inserting type hard sealing bidirectional lock |
| CN202718700U (en) * | 2012-08-06 | 2013-02-06 | 巨隆集团芜湖兴隆液压有限公司 | Middle flow reversible lock |
| CN202718699U (en) * | 2012-08-06 | 2013-02-06 | 巨隆集团芜湖兴隆液压有限公司 | Large flow bidirectional lock |
| CN203308480U (en) * | 2013-05-31 | 2013-11-27 | 巨隆集团芜湖兴隆液压有限公司 | Cartridge-type medium-flow balance two-way lock |
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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 |
Application publication date: 20130911 |