CN102587950B - Double-buffering type pushing check valve - Google Patents
Double-buffering type pushing check valve Download PDFInfo
- Publication number
- CN102587950B CN102587950B CN201210062117.3A CN201210062117A CN102587950B CN 102587950 B CN102587950 B CN 102587950B CN 201210062117 A CN201210062117 A CN 201210062117A CN 102587950 B CN102587950 B CN 102587950B
- Authority
- CN
- China
- Prior art keywords
- valve
- epicoele
- check valve
- hydraulic control
- buffering
- 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
Links
Landscapes
- Check Valves (AREA)
Abstract
The invention discloses a double-buffering type pushing check valve which comprises a feed liquid inlet, a feed liquid outlet, a return liquid inlet and a return liquid outlet; wherein a buffering check valve is arranged on a feed liquid channel between the feed liquid inlet and the feed liquid outlet; a hydraulic control check valve is arranged on a return liquid channel between the return liquid inlet and the return liquid outlet; a buffering control check valve is connected between the feed liquid inlet and a hydraulic control port of the hydraulic control check valve; the buffering check valve is reversely connected between the feed liquid inlet and the feed liquid outlet; a hydraulic control port of the buffering check valve is connected with the feed liquid outlet; the buffering control check valve is forwardly connected between the feed liquid inlet and the hydraulic control port of the hydraulic control check valve; and a valve element of the buffering control check valve is provided with a buffering spring. The double-buffering type pushing check valve plays a buffering role, avoids the violent impact of high-pressure large-flow liquid, protects connectors against impact among the connectors and prolongs the service life.
Description
Technical field
The present invention relates to a kind of buffer-type one way valve, relate in particular to a kind of Double-buffering type pushing check valve.
Background technology
In recent years, development along with coal industry field, the construction of high-yield and high-efficiency fully-mechanized mining working is also more and more, a lot of mining area year, producing coal amount surpassed ten million ton, the hydraulic support working resistance that it bears when mining height improves constantly as the important support apparatus of fully-mechanized mining working is also more and more large, and the main working process that affects coal mining efficiency falls-moves-liter single frame General Requirements circulation timei be no more than 8s, but meet fast like this speed, hydraulic control system that just must supporting high-pressure high-flow completes.But in support hydraulic system generally without flow control valve; so moment that is starting to try to stop people from fighting each other in reality; flow excessive moment is full of the working chamber of hydraulic cylinder; support advancing jack and the moment impact between fitting that is connected; on the one hand; in the life-span of the component such as the cross connector that so directly impact is connected with scraper-trough conveyer, shear pin, on the other hand, when advancing jack is flip-over type and pushing check valve lock rod chamber, tries to stop people from fighting each other and often can cause the frequent unlatching of passing safety valve.
In prior art, what on hydraulic support, use is all common hydraulic control one-way valve, liquid pressurized support movement process is subject to impacting very large, in some data, also there is buffer-type one way valve, but structure is imperfect, restriction opening process needs certain condition, for actual hydraulic pressure Support selection, has significant limitation.
Summary of the invention
The object of this invention is to provide a kind of Double-buffering type pushing check valve that can effectively avoid high-pressure high-flow hydraulic shock.
The object of the invention is to be achieved through the following technical solutions:
Double-buffering type pushing check valve of the present invention, comprise liquid inlet, feed liquor outlet, return liquid entrance, return liquid outlet, feed pathway between described liquid inlet and feed liquor outlet is provided with dashpot check valve, described time liquid entrance and the back flow channel returning between liquid outlet are provided with hydraulic control one-way valve, be connected with buffering and control one way valve between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
Described dashpot check valve Opposite direction connection is between described liquid inlet and feed liquor outlet, and the hydraulic control mouth of described dashpot check valve is connected with described feed liquor outlet, between described liquid inlet and feed liquor outlet, is provided with throttling through hole;
Described hydraulic control one-way valve Opposite direction connection is at described time liquid entrance and return between liquid outlet;
Described buffering is controlled one way valve forward and is connected between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
The spool that described buffering is controlled one way valve is provided with buffer spring, or is provided with throttling through hole between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve.
As seen from the above technical solution provided by the invention, Double-buffering type pushing check valve provided by the invention, because the feed pathway between liquid inlet and feed liquor outlet is provided with dashpot check valve, the back flow channel that returns liquid entrance and return between liquid outlet is provided with hydraulic control one-way valve, is connected with buffering and controls one way valve between the hydraulic control mouth of liquid inlet and hydraulic control one-way valve.Due to the cushioning effect of dashpot check valve and buffering control one way valve, can effectively avoid the fierce impact of high-pressure high-flow liquid, for the impact between connector, play a protective role, improve application life.
Accompanying drawing explanation
The Double-buffering type pushing check valve Ye road principle schematic that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is the structural representation of dashpot check valve and hydraulic control one-way valve in the embodiment of the present invention;
Fig. 3 is the structural representation schematic diagram that in the embodiment of the present invention, buffering is controlled one way valve;
Fig. 4 is Application Example Ye of the present invention road principle schematic.
The specific embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
Double-buffering type pushing check valve of the present invention, preferably the specific embodiment is as shown in Figure 1 for it:
Comprise liquid inlet PA, feed liquor outlet A, return liquid entrance B, return liquid outlet PB, feed pathway between described liquid inlet and feed liquor outlet is provided with dashpot check valve, described time liquid entrance and the back flow channel returning between liquid outlet are provided with hydraulic control one-way valve, be connected with buffering and control one way valve between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
Described dashpot check valve Opposite direction connection is between described liquid inlet and feed liquor outlet, and the hydraulic control mouth of described dashpot check valve is connected with described feed liquor outlet, between described liquid inlet and feed liquor outlet, is provided with throttling through hole;
Described hydraulic control one-way valve Opposite direction connection is at described time liquid entrance and return between liquid outlet;
Described buffering is controlled one way valve forward and is connected between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
The spool that described buffering is controlled one way valve is provided with buffer spring, or is provided with throttling through hole between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve.
(one way valve of take the above direction that can naturally open logical liquid is forward, take control open logical liquid or sealing direction for reverse)
Described time liquid entrance can be connected with safe liquid mouth B '.
In specific embodiment, can adopt following structure:
As shown in Figure 2 and Figure 3, described dashpot check valve comprises valve body 1, epicoele valve pad 2, epicoele push rod 3, epicoele back-moving spring 7, epicoele valve pocket 8, the first collar 4 and the second collar 5;
The front end of described epicoele push rod 3 coordinates with described epicoele valve pad 2, the rear end of described epicoele push rod 3 is enclosed within described epicoele valve pocket 8, described the second collar 5 links together described epicoele push rod 3 with epicoele valve pocket 8, and is provided with and is free to slide stroke between described epicoele push rod 3 and epicoele valve pocket 8;
Described the first collar 4 is stuck on the valve body 1 of described epicoele valve pocket 8 front portions, and described epicoele back-moving spring 7 is located between described epicoele valve pocket 8 and described valve body 1.
Described hydraulic control one-way valve comprises valve body 1, cavity of resorption valve seat 11, cavity of resorption push rod 13, cavity of resorption valve pad 15 and screw plug 20;
Described cavity of resorption push rod 13 coordinates with cavity of resorption valve pad 15, between described cavity of resorption push rod and screw plug 20, is provided with cavity of resorption spring 16.
Described buffering is controlled one way valve and is comprised screw plug 21, dashpot check valve spool 24, between described screw plug 21 and dashpot check valve spool 24, is provided with buffer spring 23.
Embodiments of the invention are actually by a hydraulic control one-way valve, dashpot check valve, buffering and control one way valve and valve body 1 combines, epicoele push rod 3 can have certain stroke that is free to slide in epicoele valve pocket 8, and collar 4 is mainly used in the location of epicoele valve pocket 8.
Hydraulic control one-way valve can be screw thread inserting type fluid-control one-way valve module, mainly cavity of resorption valve seat 11, cavity of resorption push rod 13, distance cover 14, cavity of resorption valve pad 15, cavity of resorption spring 16 and screw plug 20 etc., consists of.
The Main Function that buffering is controlled one way valve is exactly to make the liquid of liquid inlet PA through this assembly, enter the control chamber of hydraulic control one-way valve, hydraulic control one-way valve is slowly opened, when liquid inlet PA is along with feed liquor outlet A pressure raises and while raising gradually, open dashpot check valve spool 24, realize the control mouth of opening fast hydraulic control one-way valve, realize back letting out fast of liquid entrance B and carry.
The operating principle of specific embodiment is as follows:
When liquid enters in valve from liquid inlet PA, because making epicoele push rod 3 and epicoele valve pad 2 close contacts, hydraulic shock forms sealing surface, liquid can only enter through 3 equally distributed diameter 1.5 restrictions of epicoele push rod 3 front ends feed liquor outlet A, now play the effect of buffering, when feed liquor outlet A liquid is full of and pressure raises gradually, the pressure P 1 of liquid inlet PA is also along with the rising of feed liquor outlet A pressure raises gradually, when P1 reaches certain value, epicoele valve pocket 8 starts to move right, and drive epicoele push rod 3 to move right together by collar 5, epicoele push rod 3 and epicoele valve pad 2 are separated, open large traffic channel and realize quick acting, the liquid of liquid inlet PA flows through buffering control check valve assembly through the hole of epicoele push rod 3 sides simultaneously, start slowly to open buffering and control one way valve, annular pressure cavity is progressively discharged, equally, with P1, raise gradually, open fast the control mouth of hydraulic control one-way valve, realize liquid and reflux fast, avoid causing the pressure of spraining.
Concrete application example:
As shown in Figure 4, this buffer-type pushing one-way lock is applied in the hydraulic bracket system of flip-over type advancing jack the operating principle of this valve is made to further explanation:
In the moment that has just started to try to stop people from fighting each other, due to from advancing jack, pull bar, cross connector all has certain gap to each hinged pointing out of scraper-trough conveyer, during beginning, advancing jack will stretch out the gap that sub-fraction is eliminated each tie point, applied load is now substantially zero, in figure bis-, feed liquor outlet A just cannot produce enough large pressure, epicoele push rod just can not move to right yet, only has a small amount of liquid this time through the restriction of epicoele push rod, arrive the rodless cavity of advancing jack, advancing jack is eliminated gap the stretching out slowly of each connector within this of short duration time, after feed liquor outlet A sets up certain pressure, the epicoele push rod of dashpot check valve assembly moves to right, and opens large traffic channel, and a large amount of liquid enters jack rodless cavity, completes the action of trying to stop people from fighting each other fast.
After application the present invention, the try to stop people from fighting each other moment big-flow high-pressure at initial stage of buffering hydraulic support impacts, and significantly reduces the impact between the coupled fitting of support advancing jack, the application life that can improve related components; Avoid flip-over type advancing jack rod chamber to pass the frequent unlatching of safety valve simultaneously.When design selection, have more generality, more Applied economy.
Beneficial effect of the present invention:
Effectively avoid the fierce impact of high-pressure high-flow liquid, play the effect of protecting the fitting that is connected with advancing jack, improve application life, reduce costs;
Due to the cushioning effect of buffering control one way valve, before feed liquor outlet A pressure does not reach certain value, time liquid entrance B just slowly lets out and carries, and for the impact between connector, plays a protective role;
When counteragent, the structure of dashpot check valve is special, and epicoele push rod is not subject to spring force, and freely-movable in epicoele valve pocket realizes reverse quick acting.
The above; be only the present invention's specific embodiment preferably, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. a Double-buffering type pushing check valve, it is characterized in that, comprise liquid inlet, feed liquor outlet, return liquid entrance, return liquid outlet, feed pathway between described liquid inlet and feed liquor outlet is provided with dashpot check valve, described time liquid entrance and the back flow channel returning between liquid outlet are provided with hydraulic control one-way valve, be connected with buffering and control one way valve between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
Described dashpot check valve Opposite direction connection is between described liquid inlet and feed liquor outlet, and the hydraulic control mouth of described dashpot check valve is connected with described feed liquor outlet, between described liquid inlet and feed liquor outlet, is provided with throttling through hole;
Described hydraulic control one-way valve Opposite direction connection is at described time liquid entrance and return between liquid outlet;
Described buffering is controlled one way valve forward and is connected between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
The spool that described buffering is controlled one way valve is provided with buffer spring, or is provided with throttling through hole between the hydraulic control mouth of described liquid inlet and described hydraulic control one-way valve;
Described dashpot check valve comprises valve body (1), epicoele valve pad (2), epicoele push rod (3), epicoele back-moving spring (7), epicoele valve pocket (8), the first collar (4) and the second collar (5);
The front end of described epicoele push rod (3) coordinates with described epicoele valve pad (2), the rear end of described epicoele push rod (3) is enclosed within described epicoele valve pocket (8), described the second collar (5) links together described epicoele push rod (3) and epicoele valve pocket (8), and is provided with and is free to slide stroke between described epicoele push rod (3) and epicoele valve pocket (8);
It is upper that described the first collar (4) is stuck in the anterior valve body (1) of described epicoele valve pocket (8), and described epicoele back-moving spring (7) is located between described epicoele valve pocket (8) and described valve body (1).
2. Double-buffering type pushing check valve according to claim 1, is characterized in that, described time liquid entrance is connected with safe liquid mouth.
3. Double-buffering type pushing check valve according to claim 1 and 2, is characterized in that, described hydraulic control one-way valve comprises described valve body (1), also comprises cavity of resorption valve seat (11), cavity of resorption push rod (13), cavity of resorption valve pad (15) and screw plug (20);
Described cavity of resorption push rod (13) coordinates with cavity of resorption valve pad (15), between described cavity of resorption push rod and screw plug (20), is provided with cavity of resorption spring (16).
4. Double-buffering type pushing check valve according to claim 1 and 2, it is characterized in that, described buffering is controlled one way valve and is comprised screw plug (21), dashpot check valve spool (24), between described screw plug (21) and dashpot check valve spool (24), is provided with buffer spring (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062117.3A CN102587950B (en) | 2012-03-09 | 2012-03-09 | Double-buffering type pushing check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210062117.3A CN102587950B (en) | 2012-03-09 | 2012-03-09 | Double-buffering type pushing check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102587950A CN102587950A (en) | 2012-07-18 |
| CN102587950B true CN102587950B (en) | 2014-07-23 |
Family
ID=46477117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210062117.3A Expired - Fee Related CN102587950B (en) | 2012-03-09 | 2012-03-09 | Double-buffering type pushing check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102587950B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103352714A (en) * | 2013-08-05 | 2013-10-16 | 郑州煤机液压电控有限公司 | Roof brushed frame moving valve of hydraulic support for coal mine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19938815A1 (en) * | 1999-08-19 | 2001-02-22 | Vos Richard Grubenausbau Gmbh | Valve assembly for underground hydraulic systems for mining and tunneling equipment has a filter which separates and retains dirt carried in the hydraulic fluid to be removed for disposal |
| CN2835675Y (en) * | 2005-06-03 | 2006-11-08 | 竺仲鸣 | Two-way buffer valve |
| CN201065765Y (en) * | 2007-08-15 | 2008-05-28 | 浙江慧丰机械有限公司 | Full-mechanized hydraulic support backplate bidirectional lock |
| CN201321862Y (en) * | 2008-12-11 | 2009-10-07 | 中国航天科技集团公司烽火机械厂 | hydraulic two-way lock |
| DE102009052257A1 (en) * | 2009-11-06 | 2011-05-12 | Claas Industrietechnik Gmbh | valve assembly |
| CN202047839U (en) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | Floating reversible lock with pressure |
| CN202157816U (en) * | 2011-08-04 | 2012-03-07 | 山西平阳重工机械有限责任公司 | Differential pressure cushion valve |
| CN202500594U (en) * | 2012-03-09 | 2012-10-24 | 中煤北京煤矿机械有限责任公司 | Double buffering type pushing non-return valve |
-
2012
- 2012-03-09 CN CN201210062117.3A patent/CN102587950B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19938815A1 (en) * | 1999-08-19 | 2001-02-22 | Vos Richard Grubenausbau Gmbh | Valve assembly for underground hydraulic systems for mining and tunneling equipment has a filter which separates and retains dirt carried in the hydraulic fluid to be removed for disposal |
| CN2835675Y (en) * | 2005-06-03 | 2006-11-08 | 竺仲鸣 | Two-way buffer valve |
| CN201065765Y (en) * | 2007-08-15 | 2008-05-28 | 浙江慧丰机械有限公司 | Full-mechanized hydraulic support backplate bidirectional lock |
| CN201321862Y (en) * | 2008-12-11 | 2009-10-07 | 中国航天科技集团公司烽火机械厂 | hydraulic two-way lock |
| DE102009052257A1 (en) * | 2009-11-06 | 2011-05-12 | Claas Industrietechnik Gmbh | valve assembly |
| CN202047839U (en) * | 2011-05-22 | 2011-11-23 | 丰隆液压有限公司 | Floating reversible lock with pressure |
| CN202157816U (en) * | 2011-08-04 | 2012-03-07 | 山西平阳重工机械有限责任公司 | Differential pressure cushion valve |
| CN202500594U (en) * | 2012-03-09 | 2012-10-24 | 中煤北京煤矿机械有限责任公司 | Double buffering type pushing non-return valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102587950A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101550899B1 (en) | 2 step auto stroke hydraulic breaker | |
| CN102619794A (en) | Single-cylinder bolt expansion and contraction control system and construction machine | |
| CN102587950B (en) | Double-buffering type pushing check valve | |
| CN104214147A (en) | Sudden-changing load energy absorption device of shield propelling hydraulic system | |
| CN102979780A (en) | Hydraulic cylinder and engineering machine with hydraulic cylinder | |
| CN202500594U (en) | Double buffering type pushing non-return valve | |
| CN201714404U (en) | Large-flow safety valve | |
| CN101205810B (en) | Mining hydraulic support self-boosting system | |
| CN203702216U (en) | Soft-start valve | |
| CN105156385A (en) | Novel load retaining valve structure for excavator | |
| CN105443466A (en) | Hydraulic control system for quick opening cylinder and upper roll balance cylinder of steel tube straightening machine | |
| CN105065736B (en) | A kind of load adaptive security valve of use settable orifice | |
| CN106439124A (en) | Multi-functional pressure release valve | |
| CN203822246U (en) | Oil pipe blowout preventer for oil production system | |
| CN108843366A (en) | Double-buffering type pushing check valve | |
| CN104047909A (en) | Double-circuit double-energy accumulator hydraulic system and hydraulic tamper | |
| CN105114373B (en) | The hydraulic control system of rock drill jump bit | |
| CN203962524U (en) | A kind of pumping unit maintenance unit with buffer function | |
| CN205101004U (en) | A by unloading valve for colliery is in pit on hydraulic support | |
| KR101574576B1 (en) | Hydraulic breaker having the function of idle blow | |
| CN208733731U (en) | A kind of outdoor fire hydrant with collision prevention function | |
| CN202250114U (en) | Hydraulic system and pressure increasing valve using same | |
| CN106051243A (en) | Quick response safety valve adopting nonlinear regulating spring | |
| CN202612248U (en) | Combined-type hydraulic cylinder | |
| CN101899986A (en) | Hydraulic control one-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20160309 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |