CN201407059Y - One-way sequence valve and hydraulic-pressure rack control system employing same - Google Patents
One-way sequence valve and hydraulic-pressure rack control system employing same Download PDFInfo
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- CN201407059Y CN201407059Y CN2009201518686U CN200920151868U CN201407059Y CN 201407059 Y CN201407059 Y CN 201407059Y CN 2009201518686 U CN2009201518686 U CN 2009201518686U CN 200920151868 U CN200920151868 U CN 200920151868U CN 201407059 Y CN201407059 Y CN 201407059Y
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- valve
- liquid
- feed liquor
- opening device
- way sequence
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Abstract
The utility model relates to a one-way sequence valve and a hydraulic-pressure rack control system employing the one-way sequence valve. The one-way sequence valve comprises a liquid-inlet opening device, a liquid-return opening device and a valve body. The liquid-inlet opening device is connected with the liquid-return opening device through threads and a valve body, and a liquid inlet and a liquid outlet are formed on the valve body; the liquid-inlet opening device consists of a pressure-regulating screwed plug, a threaded sleeve, a large spring, a piston, an liquid-inlet valve core, a smallspring, a guide sleeve and a liquid-inlet valve seat which are mounted in sequence; and the liquid-return opening device consists of an end guide sleeve, a small spring, a liquid-return valve core and a liquid-return valve seat which are arranged in sequence. An aperture is formed on the guide sleeve, and the high-pressure liquid entering inside from through the liquid inlet acts on the piston through the function of the aperture when the liquid-inlet opening device is opened. The hydraulic-pressure rack control system adopts the one-way sequence valve to control the sequential operation of arack jack or a valve. In the one-way sequence valve of the utility model, both the pressure loss of the liquid-inlet opening device and the liquid-return resistance of the liquid-return opening device are less, and then the rack control system becomes more reasonable and convenient.
Description
Technical field
The present invention relates to a kind of one way sequence valve and use the bracket hydraulic sequence control system of this one way sequence valve.
Background technology
One way sequence valve belongs to a kind of in the pressure-control valve, its mainly act on be with pressure as control signal, under certain controlled pressure effect, switch on or off a certain oil circuit automatically.Sequence valve is equivalent to a hydraulic selector, also will do work when the high pressure liquid of outlet connects load, and the pressure loss is the smaller the better when therefore needing liquid to flow through valve port.
The pattern of existing one way sequence valve:
Spherical valve core structure: mainly utilize the spring compression steel ball, set up spring and change opening pressure.
Shaft-like valve core structure: mainly utilize the spring compression spool, set up spring and change opening pressure.
Existing sequence valve is mainly used under the mesolow operating mode, and its pressure loss is big and the adjustable in pressure scope is less, can not satisfy current hydraulic support high workload pressure system and use.
Prior art medium-height trestle sequence control system adopts controller control electric-hydraulic control reversing valve to realize.There is shortcoming at least in it:
It can only be applied in the electrohydraulic control system, and it need be equipped with controller, electric-hydraulic control reversing valve and stroke sensor or pressure sensor etc., and can not solve sequence control system.
Summary of the invention
Purpose of the present invention provides a kind of one way sequence valve that the hydraulic coupling loss is little, operating pressure is high and the adjustable in pressure scope is big that advances back; Another object of the present invention is the defective that solves existing support sequence control system, and a kind of bracket hydraulic sequence control system is provided.
The objective of the invention is to be achieved through the following technical solutions:
A kind of one way sequence valve comprises the feed liquor opening device, returns liquid opening device and valve body, and described feed liquor opening device links to each other with valve body by screw thread with time liquid opening device, and described valve body is provided with inlet and liquid outlet; Described feed liquor opening device is installed in proper order by pressure regulation plug, swivel nut, big spring, piston, feed liquor spool, little spring, fairlead, feed liquor valve seat and is constituted, constitute the valve pair between described feed liquor spool and the feed liquor valve seat, the big spring active force on the feed liquor spool, can be adjusted opening pressure that feed liquor spool open by the pressure regulation plug by piston action; Described time liquid opening device returned the liquid valve seat formation is installed in proper order by end guide pin bushing, little spring, back fluid spool, and described back fluid spool constitutes the valve pair with time liquid valve seat; Have aperture on the described fairlead, when described feed liquor opening device was opened, the highly pressurised liquid that enters from inlet acted on the piston by aperture.
The present invention can further adopt following technical scheme:
Described piston end face area is greater than the sealed diameter area of feed liquor spool and feed liquor valve seat.
Constitute middle chamber between described fairlead and the valve body, middle chamber is communicated with each aperture on the fairlead.
The sealed diameter area of described feed liquor spool and feed liquor valve seat is not more than back fluid spool and the sealed diameter area that returns the liquid valve seat.
A kind of bracket hydraulic sequence control system that adopts above-mentioned one way sequence valve mainly comprises one way sequence valve, jack, reversal valve, and one way sequence valve is connected on the pipeline of reversal valve outlet and jack inlet.
The feed liquor drag losses of one way sequence valve feed liquor opening device of the present invention is less, and time liquid resistance that returns the liquid opening device is less; Pressure controlled scope is big, the operating pressure height.
Use the sequentially-operating of this one way sequence valve control bracket jack or valve in the bracket hydraulic sequence control system, make bracket control system more rationally, conveniently.
Description of drawings
Fig. 1 is the structural representation of one way sequence valve of the present invention.
Fig. 2 uses the schematic diagram of the bracket hydraulic sequence control system embodiment one of this one way sequence valve for the present invention.
Fig. 3 uses the schematic diagram of the bracket hydraulic sequence control system embodiment two of this one way sequence valve for the present invention.
Among the figure, 1-pressure regulation plug; The 2-swivel nut; The 3-big spring; The 4-piston; 5-feed liquor spool; The 6-little spring; The 7-fairlead; 8-feed liquor valve seat; 9,14-technology is stifled; 10-holds guide pin bushing; The 11-little spring; The 12-back fluid spool; 13-returns the liquid valve seat; The 15-valve body; 16,17,33-jack; 18,20,21,22,27,31,32,34,36,38,40-high-pressure rubber pipe; 19,30-reversible lock; 23,26,37,41-reversal valve; 24,42-master's feed liquor sebific duct; 25-returns the sol pipe; 28,29,39 one way sequence valves; The 35-hydraulic control one-way valve; 43-master returns the sol pipe; The A-inlet; The B-liquid outlet; The C-middle chamber; The P-high pressure liquid; R-returns liquid; P1-high-pressure rubber pipe tie point; P2-high-pressure rubber pipe tie point; The tie point of P3-hydraulic control one-way valve control mouthful and high-pressure rubber pipe 40.
The specific embodiment
One way sequence valve of the present invention, its preferable specific embodiment as shown in Figure 1.
A kind of one way sequence valve, mainly comprise the feed liquor opening device, return liquid opening device and valve body, described feed liquor opening device, return liquid opening device and technology stifled 9,14 and link to each other with valve body 15 by screw thread, described valve body 15 is provided with inlet A and liquid outlet B, inlet A and liquid outlet B dislocation are arranged, the feed liquor opening device is installed in the axis direction of inlet A, returns the axis direction that the liquid opening device is installed in liquid outlet B.Described feed liquor opening device is installed and is constituted by pressure regulation plug 1, swivel nut 2, big spring 3, piston 4, feed liquor spool 5, little spring 6, fairlead 7, feed liquor valve seat 8 orders, constitute the valve pair between described feed liquor spool 5 and the feed liquor valve seat 8, big spring 3 active forces act on the feed liquor spool 5 by piston 4, can adjust the opening pressure that feed liquor spool 5 is opened by pressure regulation plug 1.Described time liquid opening device returned liquid valve seat 13 orders formation is installed by end guide pin bushing 10, little spring 11, back fluid spool 12.Have aperture on the described fairlead 7, constitute a middle chamber C between fairlead 7 and the valve body, when described feed liquor opening device is opened, the highly pressurised liquid that enters from inlet A enters middle chamber C and acts on the piston 4 by aperture, and the face area of piston 4 is greater than the sealed diameter area of feed liquor spool 5 with feed liquor valve seat 8.Described one way sequence valve feed liquor spool 4 is not more than described one way sequence valve back fluid spool 12 and the sealed diameter area that returns liquid valve seat 13 with the sealed diameter area of feed liquor valve seat 8.
One way sequence valve operating principle of the present invention is described below:
When liquid when inlet A enters, liquid at first acts on the feed liquor spool 5, after the hydraulic coupling that acts on feed liquor spool 5 surpasses making a concerted effort of the big spring 3 of described feed liquor opening device and little spring 6, the feed liquor opening device is opened liquid and is entered the C chamber, the liquid that enters the C chamber acts on the piston 4 by the aperture on the fairlead 7, when the C cavity pressure reaches setting value, the promotion piston 4 that acts on the high pressure liquid on the piston 4 moves to left feed liquor spool 5 is opened gradually, and piston 4 separates with feed liquor spool 5 simultaneously.The active force that the liquid that enter from inlet A this moment only need overcome little spring 9 this moment flows out from liquid outlet B, so the inlet hydraulic loss is very little.When returning liquid when liquid outlet B enters, its needs overcome the very little active force that returns liquid opening device little spring 11, can flow out from inlet A, and it is less to return the liquid drag losses.Adjust the decrement of big spring 3 and then the opening pressure of adjustment feed liquor opening device feed liquor spool 5 by set pressure plug 1 simultaneously.
The present invention uses the bracket hydraulic sequence control system of above-mentioned one way sequence valve, the specific embodiment that it is preferable such as Fig. 2, shown in Figure 3.
Figure 2 shows that a kind of bracket hydraulic sequence control system of using above-mentioned one way sequence valve, comprise one way sequence valve, jack, reversible lock, reversal valve.Reversal valve 26 liquid outlets link to each other by high-pressure rubber pipe with the inlet of one way sequence valve 29, and the liquid outlet of one way sequence valve 29 links to each other with the inlet that reversible lock 30 left sides are surveyed and gives the annular chamber feed flow of jack 16.High-pressure rubber pipe 27 links to each other at the P1 point with high-pressure rubber pipe 22 simultaneously, and the other end of high-pressure rubber pipe 22 links to each other with reversible lock 19 left sides to the annular chamber feed flow of jack 17; The liquid outlet of reversal valve 23 links to each other by high-pressure rubber pipe 22 with the inlet on reversible lock 30 right sides and gives the plunger shaft feed flow of jack 16, and high-pressure rubber pipe 22 links to each other at the P2 point with the inlet of one way sequence valve, and the liquid outlet of one way sequence valve links to each other with the plunger shaft of jack 17.
P1 point pressure when the opening pressure of setting one way sequence valve 29 feed liquor opening devices is all regained greater than jack 17 in the present embodiment, P2 point pressure when the opening pressure of setting one way sequence valve 28 feed liquor opening devices is all stretched out greater than jack 16.When reversal valve 26 commutations, the annular chamber that high pressure liquid at first enters jack 17 is received jack 17, jack 17 plunger shaft liquid return liquid by the liquid opening device that returns of one way sequence valve 28 simultaneously, when the P1 point pressure reached one way sequence valve 29 feed liquor opening device opening pressures, order one way valve 29 feed liquor opening devices were opened the annular chamber feed flow to jack 16; When reversal valve 23 commutations, by one way sequence valve 28 controls jack 16 is stretched earlier equally, when the P2 point pressure reached one way sequence valve 28 feed liquor opening device opening pressures, one way sequence valve 25 was opened and jack 17 is stretched out for jack 16 feed flows.
Figure 3 shows that the another kind of bracket hydraulic sequence control system of using above-mentioned one way sequence valve, comprise one way sequence valve, jack, reversible lock, reversal valve, the liquid outlet of reversal valve 37 links to each other by high-pressure rubber pipe 36 with the inlet of hydraulic control one-way valve 35 and gives the annular chamber feed flow of jack 33; The liquid outlet of reversal valve 42 links to each other by high-pressure rubber pipe 40 with the inlet of one way sequence valve 39 and gives the plunger shaft feed flow of jack 33.
In the present embodiment, set up the opening pressure that one way sequence valve 39 feed liquor opening device opening pressures are a bit larger tham hydraulic control one-way valve 35, when reversal valve 41 commutations, high pressure liquid is given one way sequence valve 39 feed flows by reversal valve 41, it at first discharges the pressure of hydraulic control one-way valve 35 releases with jack 33 annular chambers when the P3 point pressure reaches the release pressure of hydraulic control one-way valve 35, then when the P3 point pressure reaches one way sequence valve 39 feed liquor opening device opening pressures, the feed liquor opening device is opened to jack 33 plunger shaft feed flows, makes jack 33 stretch action; When reversal valve 37 commutations, high pressure liquid is by the annular chamber feed flow of hydraulic control one-way valve 35 to jack 33, and jack 33 plunger shaft liquid return liquid by the liquid opening device that returns of one way sequence valve 39 simultaneously, jack 33 is finished received action.Because in this control system, it discharges the pressure of hydraulic control one-way valve 35 releases with jack 33 annular chambers earlier, therefore it can not produce in the normal system, and hydraulic control one-way valve 33 is opened slow or untimely and pressurized effect that cause, thereby the frequent problem of opening of safety valve takes place.
The above; only be the preferable specific embodiment of patent of the present invention; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that patent of the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of patent of the present invention.
Claims (5)
1, a kind of one way sequence valve, comprise the feed liquor opening device, return liquid opening device and valve body, it is characterized in that: described feed liquor opening device links to each other with valve body (15) by screw thread with time liquid opening device, and described valve body (15) is provided with inlet (A) and liquid outlet (B); Described feed liquor opening device is installed and is constituted by pressure regulation plug (1), swivel nut (2), big spring (3), piston (4), feed liquor spool (5), little spring (6), fairlead (7), feed liquor valve seat (8) order, constitute the valve pair between described feed liquor spool (5) and the feed liquor valve seat (8), big spring (3) active force acts on the feed liquor spool (5) by piston (4), can adjust the opening pressure that feed liquor spool (5) is opened by pressure regulation plug (1); Described time liquid opening device is by end guide pin bushing (10), little spring (11), back fluid spool (12), and time liquid valve seat (13) order is installed and constituted, and described back fluid spool (12) constitutes the valve pair with time liquid valve seat (13); Described fairlead has aperture on (7), and when described feed liquor opening device was opened, the highly pressurised liquid that enters from inlet (A) acted on the piston (4) by aperture.
2, one way sequence valve according to claim 1 is characterized in that: the face area of described piston (4) is greater than the sealed diameter area of feed liquor spool (5) with feed liquor valve seat (8).
3, one way sequence valve according to claim 2 is characterized in that: constitute middle chamber (C) between described fairlead (7) and the valve body, middle chamber (C) is communicated with each aperture on the fairlead (7).
4, according to claim 2 or 3 described one way sequence valves, it is characterized in that: described feed liquor spool (4) is not more than back fluid spool (12) and the sealed diameter area that returns liquid valve seat (13) with the sealed diameter area of feed liquor valve seat (8).
5, a kind of bracket hydraulic sequence control system, mainly comprise one way sequence valve, jack, reversal valve, it is characterized in that: described one way sequence valve is each described one way sequence valve in the claim 1 to 4, and one way sequence valve is connected on the pipeline of reversal valve outlet and jack inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201518686U CN201407059Y (en) | 2009-04-27 | 2009-04-27 | One-way sequence valve and hydraulic-pressure rack control system employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201518686U CN201407059Y (en) | 2009-04-27 | 2009-04-27 | One-way sequence valve and hydraulic-pressure rack control system employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201407059Y true CN201407059Y (en) | 2010-02-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201518686U Expired - Lifetime CN201407059Y (en) | 2009-04-27 | 2009-04-27 | One-way sequence valve and hydraulic-pressure rack control system employing same |
Country Status (1)
| Country | Link |
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| CN (1) | CN201407059Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747915A (en) * | 2012-07-02 | 2012-10-24 | 南京中航特种装备有限公司上海技术中心 | End door pressure logical control mechanism and control method thereof |
-
2009
- 2009-04-27 CN CN2009201518686U patent/CN201407059Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747915A (en) * | 2012-07-02 | 2012-10-24 | 南京中航特种装备有限公司上海技术中心 | End door pressure logical control mechanism and control method thereof |
| CN102747915B (en) * | 2012-07-02 | 2014-11-05 | 南京中航特种装备有限公司上海技术中心 | End door pressure logical control mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100217 Effective date of abandoning: 20090427 |