CN103670476B - Soft starting valve - Google Patents
Soft starting valve Download PDFInfo
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- CN103670476B CN103670476B CN201310659184.8A CN201310659184A CN103670476B CN 103670476 B CN103670476 B CN 103670476B CN 201310659184 A CN201310659184 A CN 201310659184A CN 103670476 B CN103670476 B CN 103670476B
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- spool
- housing
- fighting
- connector
- stop people
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Abstract
The invention discloses a kind of soft starting valve, comprise housing, spool, spring and connector, housing is the cylinder that inside is provided with shoulder hole, spool is the inner cylinder for cavity, the front end of spool is provided with several throttle orifices and several flowing holes, spool is installed on the inside of housing and the front end of spool is against the minimum diameter place of housing, spring housing is in the outside of spool, connector is shoulder hole structure, the head end of connector is placed on the tail end of spool and the tail end of the head end of connector and housing is interference fit, the head end of housing to be tried to stop people from fighting each other chamber joint for passing oil cylinder, the tail end of connector is main valve group reversal valve joint.This soft starting valve, when hydraulic support is tried to stop people from fighting each other, by the throttling action of throttle orifice, realizes slowly trying to stop people from fighting each other, and on the one hand, effectively avoids passing the too fast phenomenon of oil cylinder pushing and sliding chamber supercharging, avoids safety valve frequently to open, extend the life-span of safety valve; On the other hand, the liquid flow entering chamber of trying to stop people from fighting each other from the reversal valve of main valve group is effectively controlled.
Description
Technical field
The present invention relates to valve technology field, be specifically related to a kind ofly pass the soft starting valve of trying to stop people from fighting each other for coal mine hydraulic supporting.
Background technology
Current coal mine hydraulic supporting advancing jack much adopts the mode of upside-down mounting, can improve the power of trying to stop people from fighting each other like this, suitably reduce tractional force, its principle as shown in Figure 1, the passing chamber A that advancing jack passes oil cylinder G1 is provided with hydraulic control one-way valve F1 and safety valve F2, during passing, hydraulic control one-way valve F1 can lock and pass position, prevent transporter from retreating, when trying to stop people from fighting each other, under the effect of fluid control pressure, hydraulic control one-way valve F1 opens, and the oil of oil cylinder cavity of resorption is returned by oil-in, realizes cylinder action; The effect of safety valve F2 is to control liquid flow path direction and cuts off in time to close highly pressurised liquid, the safety of protection transporter and support pusher structure part.
There is following shortcoming in above-mentioned hydraulic control one-way valve F1: first, that hydraulic control one-way valve F1 locks is the passing chamber A passing oil cylinder G1, when trying to stop people from fighting each other, when high pressure liquid act on pass oil cylinder G1 try to stop people from fighting each other chamber time, owing to trying to stop people from fighting each other, chamber B also exists certain cross sectional area ratio with passing chamber A, generally about 1:2, therefore, opening passing chamber A generally can be delayed, easily causes passing cavity pressure to rise too fast, safety valve is frequently opened, and has a strong impact on the application life of safety valve; Secondly, because the chamber B that tries to stop people from fighting each other passing oil cylinder G1 connects the reversal valve of main valve group, reversal valve flow is comparatively large, easily causes the push-and-pull head junction of passing oil cylinder G1 push-and-pull head and support to have greater impact, easily causes the bend fracture of pin and the fracture of passing oil cylinder G1 push-and-pull head.
Summary of the invention
For overcoming the deficiencies in the prior art, the invention provides a kind of can effectively hydraulic control support pass and process of trying to stop people from fighting each other in liquid stream size pass the soft starting valve of trying to stop people from fighting each other for coal mine hydraulic supporting.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of soft starting valve, comprise housing, spool, spring and connector, described housing is the cylinder that inside is provided with shoulder hole, described spool is the cylinder that inside is provided with cavity, the front end of spool is provided with several throttle orifices and several flowing holes, spool is installed on the inside of housing and the front end of spool is against the minimum diameter place of housing, described spring housing is in the outside of spool, described connector is shoulder hole structure, the head end of connector is placed on the tail end of spool and the head end of connector is connected with the threads of housing, the head end of housing to be tried to stop people from fighting each other chamber joint for passing oil cylinder, the tail end of connector is main valve group reversal valve joint, when spring is in relaxed state, throttle orifice with pass oil cylinder and to try to stop people from fighting each other chamber fittings, flowing hole with pass oil cylinder chamber joint of trying to stop people from fighting each other and cut off, when spring is in compressive state, throttle orifice with pass oil cylinder and to try to stop people from fighting each other chamber fittings, flowing hole with pass oil cylinder and to try to stop people from fighting each other chamber fittings.
Further, sealing ring is provided with between the contact surface of described spool and housing.
Further, sealing ring is provided with between the contact surface of described connector and spool.
Further, described throttle orifice is symmetrical about the straight line at poppet shaft place.
Further, described flowing hole is symmetrical about the straight line at poppet shaft place.
Compared with prior art, the invention has the beneficial effects as follows:
Soft starting valve of the present invention, when hydraulic support is tried to stop people from fighting each other, by the throttling action of throttle orifice, realizes slowly trying to stop people from fighting each other, and on the one hand, effectively avoids passing oil cylinder and passes the too fast phenomenon of chamber supercharging, avoid safety valve frequently to open, extend the life-span of safety valve; On the other hand, effectively control the liquid flow entering chamber of trying to stop people from fighting each other from the reversal valve of main valve group, avoid the excessive passing oil cylinder push-and-pull head caused of flow and the impact of the push-and-pull head junction of support, avoid causing the bend fracture of pin and the fracture of passing oil cylinder push-and-pull head.
Accompanying drawing explanation
Fig. 1 is the operating principle schematic diagram of conventional hydraulic support advancing jack;
Fig. 2 is the structural representation of soft starting valve of the present invention;
Fig. 3 is the operating principle schematic diagram of the hydraulic support advancing jack of invention.
Try to stop people from fighting each other chamber joint, P-main valve group reversal valve joint in description of reference numerals: G1-passing oil cylinder, F1-passing hydraulic control one-way valve, F2-safety valve, F3-soft starting valve, A-passing chamber, B-chamber of trying to stop people from fighting each other, 1-housing, 2-spool, 3-spring, 4-connector, 21-throttle orifice, 2-flowing hole, 5-sealing ring, 6-sealing ring, O-passing oil cylinder.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
As shown in Figure 2, soft starting valve in the present embodiment comprises housing 1, spool 2, spring 3 and connector 4, housing 1 is the inner cylinder being provided with shoulder hole, spool 2 is the inner cylinder being provided with cavity, the front end of spool 2 is provided with several throttle orifice 21 and several flowing holes 22, spool 2 is installed on the inside of housing 1 and the front end of spool 2 is against the minimum diameter place of housing 1, spring 3 is enclosed within the outside of spool 2, connector 4 is shoulder hole structure, the head end of connector 4 is placed on the tail end of spool 2 and the head end of connector 4 is connected with the threads of housing 1, depart to avoid connector 4 and housing 1 in the course of work.
The head end of housing 1 to be tried to stop people from fighting each other chamber joint O for passing oil cylinder, and for connecting the chamber B that tries to stop people from fighting each other passing oil cylinder G1, the tail end of connector 4 is main valve group reversal valve joint P, for connecting the reversal valve of main valve group.
When spring 3 is in relaxed state, throttle orifice 21 and pass the oil cylinder G1 chamber joint O that tries to stop people from fighting each other and is communicated with, flowing hole 22 and the passing oil cylinder chamber joint O that tries to stop people from fighting each other cuts off; When spring 3 is in compressive state, throttle orifice 21 and pass the oil cylinder G1 chamber joint O that tries to stop people from fighting each other and is communicated with, flowing hole 22 and pass the oil cylinder G1 chamber joint O that tries to stop people from fighting each other and be communicated with.
Soft starting valve in the present embodiment usually with common hydraulic control one-way valve F1 with the use of, realize coal mine hydraulic supporting passing to try to stop people from fighting each other, as shown in Figure 3, traditional jack hydraulic system increases soft starting valve F3, and passed oil cylinder try to stop people from fighting each other chamber joint O be connected to pass oil cylinder G1 try to stop people from fighting each other on the B of chamber, its main valve group reversal valve joint P is connected on the working hole of main valve group reversal valve.
When trying to stop people from fighting each other, soft starting valve F3 is entered from P from main valve group reversal valve highly pressurised liquid out, by throttle orifice 21, the chamber B that tries to stop people from fighting each other passing oil cylinder G1 is entered from A, here the course of work of soft starting valve F3 is divided into two stages: first stage soft starting valve F3 plays choke valve effect, due to soft starting valve F3 just start working time, highly pressurised liquid from main valve group reversal valve out, through the throttling action of soft starting valve F3 throttle orifice 21, the emulsion flow entering the chamber B that tries to stop people from fighting each other passing oil cylinder G1 is less, pass chamber A and can not set up high pressure rapidly, simultaneously, try to stop people from fighting each other in the B of chamber and do not set up high pressure, pass oil cylinder G1 action slower, the push-and-pull head passing oil cylinder G1 slowly contacts with support push-and-pull head, meanwhile, from the A joint of soft starting valve F3 emulsion Fen Liao mono-road out to the control chamber of hydraulic control one-way valve F1, before high pressure is set up in passing chamber, passings chamber is opened, realize passing chamber and shift to an earlier date pressure release, second stage: soft starting valve F3 plays one way valve effect, when passing push-and-pull head and the support push-and-pull head close contact of oil cylinder G1, along with the increase of load, the pressure passed in oil cylinder G1 passing chamber A constantly raises, when pressure reaches the controlled pressure that soft starting valve opens completely, the spool 2 of soft starting valve F3 moves right under the effect of hydraulic power, and all opens gradually along with the continuous increase of pressure, large-flow emulsion enters trying to stop people from fighting each other in the B of chamber of passing oil cylinder G1, realizes trying to stop people from fighting each other fast of hydraulic support.
In order to improve seal, ensure the reliability that throttle orifice 21 and flowing hole 22 work, the present embodiment is preferably provided with sealing ring 5 between the contact surface of spool 2 and housing 1, between the contact surface of connector 4 and spool 2, be provided with sealing ring 6.
In passing oil cylinder G1 tries to stop people from fighting each other chamber B, set up pressure in order to being beneficial to uniformly, several throttle orifices 21 in the present embodiment are symmetrical about the straight line at spool 2 axle place, and the straight line of several flowing holes 22 also about spool 2 axle place is symmetrical.
Although with reference to best interpretations embodiment of the present invention, invention has been described here, but, should be appreciated that, those skilled in the art can design a lot of other amendment and embodiment, these amendments and embodiment will drop within spirit disclosed in the present application and spirit.More particularly, in the scope of, accompanying drawing open in the application and claim, multiple modification and improvement can be carried out to the building block of subject combination layout and/or layout.Except the modification of carrying out building block and/or layout is with except improvement, to those skilled in the art, other purposes also will be obvious.
Claims (5)
1. a soft starting valve, it is characterized in that: comprise housing (1), spool (2), spring (3) and connector (4), described housing (1) is the inner cylinder being provided with shoulder hole, described spool (2) is the inner cylinder for cavity, the front end of spool (2) is provided with several throttle orifices (21) and several flowing holes (22), spool (2) is installed on the inside of housing (1) and the front end of spool (2) is against the minimum diameter place of housing (1), described spring (3) is enclosed within the outside of spool (2), described connector (4) is shoulder hole structure, the head end of connector (4) is placed on the tail end of spool (2) and the head end of connector (4) is connected with the threads of housing (1), the head end of housing (1) to be tried to stop people from fighting each other chamber joint (A) for passing oil cylinder, the tail end of connector (4) is main valve group reversal valve joint (P), when spring (3) is in relaxed state, throttle orifice (21) and pass oil cylinder chamber joint (A) of trying to stop people from fighting each other and be communicated with, flowing hole (22) with pass oil cylinder chamber joint (A) of trying to stop people from fighting each other and cut off, when spring (3) is in compressive state, throttle orifice (21) and pass oil cylinder chamber joint (A) of trying to stop people from fighting each other and is communicated with, flowing hole (22) and pass oil cylinder chamber joint (A) of trying to stop people from fighting each other and be communicated with.
2. soft starting valve according to claim 1, is characterized in that: be provided with sealing ring (5) between the contact surface of described spool (2) and housing (1).
3. soft starting valve according to claim 1, is characterized in that: be provided with sealing ring (6) between the contact surface of described connector (4) and spool (2).
4. soft starting valve according to claim 1, is characterized in that: described throttle orifice (21) is symmetrical about the straight line at spool (2) axle place.
5. soft starting valve according to claim 1, is characterized in that: described flowing hole (22) is symmetrical about the straight line at spool (2) axle place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659184.8A CN103670476B (en) | 2013-12-09 | 2013-12-09 | Soft starting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659184.8A CN103670476B (en) | 2013-12-09 | 2013-12-09 | Soft starting valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103670476A CN103670476A (en) | 2014-03-26 |
| CN103670476B true CN103670476B (en) | 2015-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310659184.8A Active CN103670476B (en) | 2013-12-09 | 2013-12-09 | Soft starting valve |
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| Country | Link |
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| CN (1) | CN103670476B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024131629A1 (en) * | 2022-12-21 | 2024-06-27 | 北京天玛智控科技股份有限公司 | One-way throttle valve and hydraulic support lifting system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547065U (en) * | 2009-11-26 | 2010-08-11 | 哈尔滨理工大学 | Soft start valve |
| CN201696375U (en) * | 2010-05-17 | 2011-01-05 | 费斯托(中国)有限公司 | Soft starting valve with rapid pressure relief |
| JP2012255363A (en) * | 2011-06-08 | 2012-12-27 | Aisan Industry Co Ltd | Flow rate control valve |
| CN102853131A (en) * | 2012-08-30 | 2013-01-02 | 杭州春江阀门有限公司 | Water hammer-resistant constant-pressure pressure reducing valve |
| CN202972057U (en) * | 2012-11-30 | 2013-06-05 | 武汉格瑞拓机械有限公司 | Machinery soft starting unloading valve |
| CN203702216U (en) * | 2013-12-09 | 2014-07-09 | 四川航天电液控制有限公司 | Soft-start valve |
-
2013
- 2013-12-09 CN CN201310659184.8A patent/CN103670476B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547065U (en) * | 2009-11-26 | 2010-08-11 | 哈尔滨理工大学 | Soft start valve |
| CN201696375U (en) * | 2010-05-17 | 2011-01-05 | 费斯托(中国)有限公司 | Soft starting valve with rapid pressure relief |
| JP2012255363A (en) * | 2011-06-08 | 2012-12-27 | Aisan Industry Co Ltd | Flow rate control valve |
| CN102853131A (en) * | 2012-08-30 | 2013-01-02 | 杭州春江阀门有限公司 | Water hammer-resistant constant-pressure pressure reducing valve |
| CN202972057U (en) * | 2012-11-30 | 2013-06-05 | 武汉格瑞拓机械有限公司 | Machinery soft starting unloading valve |
| CN203702216U (en) * | 2013-12-09 | 2014-07-09 | 四川航天电液控制有限公司 | Soft-start valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103670476A (en) | 2014-03-26 |
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