CN104314900A - Automatic stop valve - Google Patents
Automatic stop valve Download PDFInfo
- Publication number
- CN104314900A CN104314900A CN201410439425.2A CN201410439425A CN104314900A CN 104314900 A CN104314900 A CN 104314900A CN 201410439425 A CN201410439425 A CN 201410439425A CN 104314900 A CN104314900 A CN 104314900A
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- CN
- China
- Prior art keywords
- oil
- pressure oil
- high pressure
- low voltage
- voltage control
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses an automatic stop valve, which comprises a valve body, wherein a high-pressure oil inflow passage, a high-pressure oil outflow passage and a low-pressure control oil passage are formed in the valve body; the high-pressure oil inflow passage is communicated with an oil outlet of an electric pump and an oil inlet of an oil cylinder; when low-pressure control oil flows into the low-pressure control oil passage, the high-pressure oil inflow passage and the high-pressure oil outflow passage are disconnected, and high-pressure oil flowing out of the oil outlet of the electric pump directly flows into the oil inlet of the oil cylinder; when the low-pressure control oil passage is free of pressure oil, the high-pressure oil flowing out of the oil outlet of the electric pump returns to an oil tank sequentially through the high-pressure oil inflow passage and the high-pressure oil outflow passage. According to the automatic stop valve, a high-pressure oil opening is controlled to be opened and closed by the low-pressure control oil, a valve opening is blocked by a piston under the action of the low-pressure control oil to cut off oil ways of the high-pressure oil inflow passage and the high-pressure oil outflow passage when the electric pump is started, and when the electric pump is stopped, the valve opening is automatically opened, and hydraulic oil returns to the oil tank through the high-pressure oil outflow passage; the automatic stop valve is simple in structure and high in practicability.
Description
Technical field
The present invention relates to control valve technical field, particularly relate to a kind of automatic stop valve.
Background technique
Stop valve of the prior art, operation is too complicated, can't realize self-sealing and unlatching, make troubles to work.Therefore, need technical progress, structural improvement, make the automaticity of stop valve higher.
Summary of the invention
The present invention mainly solves technical problem existing in prior art, thus provides the automatic stop valve that a kind of structure is simple, practicability is good.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
Automatic stop valve provided by the invention, comprise valve body, described valve body is provided with high pressure oil flow channel, high pressure oil flow pass and low voltage control oil passage, the oil outlet of described high pressure oil flow channel and a motor-drive pump, the filler opening of an oil cylinder are interconnected, when described low voltage control oil passage flows into low voltage control oil, described high pressure oil flow channel and high pressure oil flow pass disconnect, and the high pressure oil of the oil outlet outflow of described motor-drive pump flows directly into the filler opening of described oil cylinder; When described low voltage control oil passage is without pressure oil, the high pressure oil that the oil outlet of described motor-drive pump flows out gets back to fuel tank through described high pressure oil flow channel, high pressure oil flow pass successively.
Further, also comprise piston and plug, described plug is arranged on the opening side of described valve body, and for closed valve, described piston is arranged in described valve body, and the cross section that described piston is positioned at low voltage control oil side is greater than the cross section that it is positioned at described high pressure oil side, and an also sheathed spring on described piston, when low voltage control oil passage flows into low voltage control oil, described piston moves to left and cuts off described high high pressure oil flow channel and high pressure oil flow pass; When described low voltage control oil passage is without pressure oil, described piston moves to right, and described high pressure oil flow channel is connected with high pressure oil flow pass.
Further, described high pressure oil flow channel and low voltage control oil passage aperture are all provided with the first seal ring, and described first seal ring is O type circle.
Further, be provided with the second seal ring between described piston and described valve body, described second seal ring is O type circle.
Further, sealing gasket is provided with between described plug and described valve body.
Further, described valve body four M6 bolts are connected with motor-drive pump manifold block.
Further, the described pressure of low voltage control oil and the pressure of high pressure oil are respectively 3MPa and 70MPa.
Beneficial effect of the present invention is: the opening and closing being controlled high pressure hydraulic fluid port by low voltage control oil, when electric priming pump, piston blocks valve port thus the oil circuit of cutoff high oil flow channel and high pressure oil flow pass under low pressure oil effect, system is set up reach the working pressure of setting, when motor-drive pump stops, valve port is opened automatically, and hydraulic oil gets back to fuel tank through high pressure oil flow pass, and its structure is simple, practicability good.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of automatic stop valve of the present invention;
Fig. 2 is the plan view of automatic stop valve of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Design of the present invention is: the hydrovalve utilizing area ratio to realize the opening and closing controlling high pressure hydraulic fluid port (70MPa) by low pressure oil (3MPa).When electric priming pump, piston blocks valve port thus oil circuit between cutoff high oil pocket (70MPa) and fuel tank under the effect of 3MPa low pressure oil, system is set up reach the working pressure of 70MPa.When motor-drive pump stops, valve port is opened automatically, and fuel tank got back to by oil.
Consult shown in Fig. 1-2, automatic stop valve of the present invention, comprise valve body 6, valve body 6 is provided with high pressure oil flow channel P, high pressure oil flow pass T and low voltage control oil passage K, the oil outlet A of high pressure oil flow channel P and a motor-drive pump, the filler opening of an oil cylinder are interconnected, when low voltage control oil passage K flows into low voltage control oil, high pressure oil flow channel P and high pressure oil flow pass T disconnects, and the oil outlet A of motor-drive pump flows out the filler opening that high pressure oil flows directly into oil cylinder; When low voltage control oil passage K is without pressure oil, the high pressure oil that the oil outlet A of described motor-drive pump flows out gets back to fuel tank through high pressure oil flow channel P, high pressure oil flow pass T successively.Wherein, the pressure of low voltage control oil and the pressure of high pressure oil are respectively 3MPa and 70MPa.
This automatic stop valve also comprises piston 3 and plug 8, and plug 8 is arranged on the opening side of valve body 6, and for closed valve 6, in order to increase sealing effect, is provided with sealing gasket 7 between plug 8 and valve body 6.The object arranging plug 8 is for convenience of maintenance and assembling.Piston 3 is arranged in valve body 6, and the cross section that piston 3 is positioned at low voltage control oil side is greater than the cross section that it is positioned at high pressure oil side, thus realizes the object of low voltage control high pressure.And an also sheathed spring 2 on piston 3, when low voltage control oil passage K flows into low voltage control oil, piston 3 moves to left and cuts off high high pressure oil flow channel P and high pressure oil flow pass T; When low voltage control oil passage K is without pressure oil, piston 3 moves to right under the elastic force effect of spring 2, and high pressure oil gets back to fuel tank through high pressure oil flow channel P, high pressure oil flow pass T successively.
In order to match with remaining pipeline, and ensureing its sealing, high pressure oil flow channel P and low voltage control oil passage K aperture are all provided with the first seal ring 1, first seal ring 1 and are preferably O type circle, be provided with the second seal ring 4, second seal ring 4 between piston 3 and valve body 6 and be preferably O type circle.
Below for the working procedure of automatic stop valve, the present invention is further introduced:
Start motor-drive pump, while hydraulic oil flows into high pressure oil flow channel P, also low voltage control oil is flowed in low voltage control oil passage K, the power that piston 3 overcomes spring 2 under the effect of low voltage control oil blocks valve port, thus the oil circuit of cutoff high oil flow channel P and high pressure oil flow pass T, hydraulic oil enters in oil cylinder from the oil outlet A of motor-drive pump, when needing backhaul, close motor-drive pump, distress resolves in low voltage control oil passage K, piston 3 returning position under the effect of spring 2, valve port is opened, fluid is successively through entering passage P, high pressure oil flow pass T gets back to fuel tank, and so forth.
Above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any change of expecting without creative work or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should limit with claims is as the criterion.
Claims (7)
1. an automatic stop valve, comprise valve body (6), it is characterized in that: described valve body (6) is provided with high pressure oil flow channel (P), high pressure oil flow pass (T) and low voltage control oil passage (K), the oil outlet (A) of described high pressure oil flow channel (P) and a motor-drive pump, the hydraulic fluid port of one oil cylinder is interconnected, when described low voltage control oil passage (K) flows into low voltage control oil, described high pressure oil flow channel (P) and high pressure oil flow pass (T) disconnect, the high pressure oil that the oil outlet (A) of described motor-drive pump flows out flows directly into the hydraulic fluid port of described oil cylinder, when described low voltage control oil passage (K) is without pressure oil, the high pressure oil that the oil outlet (A) of described motor-drive pump flows out gets back to fuel tank through described high pressure oil flow channel (P), high pressure oil flow pass (T) successively.
2. automatic stop valve as claimed in claim 1, it is characterized in that: also comprise piston (3) and plug (8), described plug (8) is arranged on the opening side of described valve body (6), and for closed valve (6), described piston (3) is arranged in described valve body (6), and the cross section that described piston (3) is positioned at low voltage control oil side is greater than the cross section that it is positioned at described high pressure oil side, and the upper also sheathed spring (2) of described piston (3), when low voltage control oil passage (K) flows into low voltage control oil, described piston (3) moves to left and cuts off described high high pressure oil flow channel (P) and high pressure oil flow pass (T), when described low voltage control oil passage (K) is without pressure oil, described piston (3) moves to right, and described high pressure oil flow channel (P) is connected with high pressure oil flow pass (T).
3. automatic stop valve as claimed in claim 2, is characterized in that: described high pressure oil flow channel (P) and low voltage control oil passage (K) aperture are all provided with the first seal ring (1), and described first seal ring (1) is O type circle.
4. automatic stop valve as claimed in claim 2, it is characterized in that: be provided with the second seal ring (4) between described piston (3) and described valve body (6), described second seal ring (4) is O type circle.
5. automatic stop valve as claimed in claim 2, is characterized in that: be provided with sealing gasket (7) between described plug (8) and described valve body (6).
6. automatic stop valve as claimed in claim 2, is characterized in that: described valve body (6) is connected with motor-drive pump manifold block with four M6 bolts (5).
7. automatic stop valve as claimed in claim 1, is characterized in that: the described pressure of low voltage control oil and the pressure of high pressure oil are respectively 3MPa and 70MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439425.2A CN104314900B (en) | 2014-09-01 | 2014-09-01 | A kind of automatic stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410439425.2A CN104314900B (en) | 2014-09-01 | 2014-09-01 | A kind of automatic stop valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314900A true CN104314900A (en) | 2015-01-28 |
| CN104314900B CN104314900B (en) | 2016-09-14 |
Family
ID=52370183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410439425.2A Active CN104314900B (en) | 2014-09-01 | 2014-09-01 | A kind of automatic stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104314900B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565821A (en) * | 2021-06-30 | 2021-10-29 | 郑州磨料磨具磨削研究所有限公司 | Hydraulic stop valve capable of adjusting closing pressure and hydraulic system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334180A (en) * | 1995-06-07 | 1996-12-17 | Sun Tec:Kk | Stop valve |
| DE202008017688U1 (en) * | 2008-10-23 | 2010-04-15 | Kkt Gmbh | Lifting drive for a press or cutting tool for cable processing |
| CN201513569U (en) * | 2009-10-23 | 2010-06-23 | 常州乙顿液压气动机械制造有限公司 | Large-diameter normal open hydraulic control stop valve |
| CN202273927U (en) * | 2011-09-10 | 2012-06-13 | 鞍钢股份有限公司 | Labor-saving hydraulic stop valve |
| CN202579400U (en) * | 2012-05-12 | 2012-12-05 | 宫禄齐 | Ultra-high pressure stop valve |
| CN103573732A (en) * | 2013-09-09 | 2014-02-12 | 山东大学 | Ultrahigh-pressure large-flow-rate supercharged hydraulically controlled stop valve and application thereof |
-
2014
- 2014-09-01 CN CN201410439425.2A patent/CN104314900B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334180A (en) * | 1995-06-07 | 1996-12-17 | Sun Tec:Kk | Stop valve |
| DE202008017688U1 (en) * | 2008-10-23 | 2010-04-15 | Kkt Gmbh | Lifting drive for a press or cutting tool for cable processing |
| CN201513569U (en) * | 2009-10-23 | 2010-06-23 | 常州乙顿液压气动机械制造有限公司 | Large-diameter normal open hydraulic control stop valve |
| CN202273927U (en) * | 2011-09-10 | 2012-06-13 | 鞍钢股份有限公司 | Labor-saving hydraulic stop valve |
| CN202579400U (en) * | 2012-05-12 | 2012-12-05 | 宫禄齐 | Ultra-high pressure stop valve |
| CN103573732A (en) * | 2013-09-09 | 2014-02-12 | 山东大学 | Ultrahigh-pressure large-flow-rate supercharged hydraulically controlled stop valve and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113565821A (en) * | 2021-06-30 | 2021-10-29 | 郑州磨料磨具磨削研究所有限公司 | Hydraulic stop valve capable of adjusting closing pressure and hydraulic system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104314900B (en) | 2016-09-14 |
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