CN203702216U - Soft-start valve - Google Patents
Soft-start valve Download PDFInfo
- Publication number
- CN203702216U CN203702216U CN201320802596.8U CN201320802596U CN203702216U CN 203702216 U CN203702216 U CN 203702216U CN 201320802596 U CN201320802596 U CN 201320802596U CN 203702216 U CN203702216 U CN 203702216U
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- CN
- China
- Prior art keywords
- spool
- valve
- connector
- oil cylinder
- fighting
- 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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a soft-start valve, which comprises a shell, a valve element, a spring and a connector, wherein the shell is a cylinder internally provided with a stepped hole; the valve element is a cylinder with an inner cavity; a plurality of throttling holes and a plurality of overflow holes are formed in the front end of the valve element; the valve element is mounted in the shell, and the front end of the valve element is propped against the part, with the smallest internal diameter, of the shell; the valve element is sleeved with the spring; the connector adopts a stepped hole structure; the head end of the connector sleeves the tail end of the valve element, and is in threaded connection with the tail end of the shell; the head end of the shell is a displacement oil cylinder bracket pulling cavity joint; the tail end of the connector is a main valve group reversing valve joint. When the soft-start valve is used for pulling a hydraulic bracket, the hydraulic bracket can be slowly pulled under the throttling action of the throttling holes, so that on one hand, the phenomenon of excessively high boosting speed of a displacement cavity of a displacement oil cylinder is effectively prevented to avoid the frequent opening of a safety valve and prolong the service life of the safety valve, and on the other hand, the flow rate of liquid entering a bracket pulling cavity from a reversing valve of a main valve group is effectively controlled.
Description
Technical field
The utility model relates to valve technology field, is specifically related to a kind of soft starting valve of trying to stop people from fighting each other of passing for coal mine hydraulic supporting.
Background technology
Coal mine hydraulic supporting advancing jack much adopts the mode of upside-down mounting at present, can improve like this power of trying to stop people from fighting each other, suitably reduce tractional force, its principle as shown in Figure 1, the passing chamber A that advancing jack is passed oil cylinder G1 is provided with hydraulic control one-way valve F1 and safety valve F2, when passing, hydraulic control one-way valve F1 can lock and pass position, prevent that transporter from retreating, while 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 returns by oil-in, realizes cylinder action; The effect of safety valve F2 is to control liquid flow path direction and cuts off in time sealing 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 that passes oil cylinder G1, while trying to stop people from fighting each other, pass the trying to stop people from fighting each other when chamber of oil cylinder G1 when high pressure liquid acts on, due to try to stop people from fighting each other chamber B with pass chamber A and exist certain cross sectional area ratio, it is generally 1:2 left and right, therefore, open passing chamber A and generally can lag behind, easily cause 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, owing to passing the chamber B that tries to stop people from fighting each other of oil cylinder G1 and connect the reversal valve of main valve group, reversal valve flow is larger, easily causes a push-and-pull junction of passing oil cylinder G1 push-and-pull head and support to have greater impact, the fracture that easily causes the bend fracture of pin and pass oil cylinder G1 push-and-pull head.
Utility model content
For overcoming the deficiencies in the prior art, the utility model provide a kind of can effectively control that hydraulic support is passed and the 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 utility model 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 and 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 threaded with the tail end of housing, the head end of housing is for passing the oil cylinder chamber joint of trying to stop people from fighting each other, the tail end of connector is main valve group reversal valve joint, when spring is during in relaxed state, throttle orifice with pass the oil cylinder chamber joint of trying to stop people from fighting each other and be communicated with, flowing hole with pass try to stop people from fighting each other chamber joint of oil cylinder and cut off, when spring is during in compressive state, throttle orifice with pass the oil cylinder chamber joint of trying to stop people from fighting each other and be communicated with, flowing hole and the passing oil cylinder chamber joint of trying to stop people from fighting each other is communicated with.
Further, between the contact surface of described spool and housing, be provided with sealing ring.
Further, between the contact surface of described connector and spool, be provided with sealing ring.
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 beneficial effects of the utility model are:
Soft starting valve of the present invention, in the time that hydraulic support is tried to stop people from fighting each other, by the throttling action of throttle orifice, is realized and slowly being tried 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, avoids safety valve frequently to open, and extends the life-span of safety valve; On the other hand, effectively control the liquid stream flow that enters the chamber of trying to stop people from fighting each other from the reversal valve of main valve group, avoid the impact of a push-and-pull junction of the excessive passing oil cylinder push-and-pull head causing of flow and 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.
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, the 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 try to stop people from fighting each other chamber joint, P-main valve group reversal valve joint.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
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 that is provided with shoulder hole, spool 2 is the inner cylinder that is 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 and 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 threaded with the tail end of housing 1, to avoid connector 4 in the course of work to depart from housing 1.
The head end of housing 1 is for passing the oil cylinder chamber joint O that tries to stop people from fighting each other, and for connecting the chamber B that tries to stop people from fighting each other that passes 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 during in relaxed state, throttle orifice 21 with pass the oil cylinder G1 chamber joint O that tries to stop people from fighting each other and be communicated with, flowing hole 22 with pass the oil cylinder chamber joint O partition of trying to stop people from fighting each other; When spring 3 is during in compressive state, throttle orifice 21 with pass the oil cylinder G1 chamber joint O that tries to stop people from fighting each other and be communicated with, flowing hole 22 and the passing oil cylinder G1 chamber joint O that tries to stop people from fighting each other is communicated with.
Soft starting valve in the present embodiment is used in conjunction with common hydraulic control one-way valve F1 conventionally, realizing coal mine hydraulic supporting passing tries to stop people from fighting each other, as shown in Figure 3, in traditional jack hydraulic system, increase soft starting valve F3, and passed the oil cylinder chamber joint O that tries to stop people from fighting each other and be connected to that to pass the chamber B that tries to stop people from fighting each other of oil cylinder G1 upper, its main valve group reversal valve joint P is connected on the working hole of main valve group reversal valve.
While trying to stop people from fighting each other, enter soft starting valve F3 from main valve group reversal valve highly pressurised liquid out from P, by throttle orifice 21, enter the chamber B that tries to stop people from fighting each other that passes oil cylinder G1 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, while just having started working due to soft starting valve F3, 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 that enters the chamber B that tries to stop people from fighting each other that passes oil cylinder G1 is less, pass chamber A and can not set up rapidly high pressure, 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 of passing oil cylinder G1 slowly contacts with support push-and-pull head, meanwhile, the control chamber from the A joint of soft starting valve F3 emulsion Fen Liao mono-road out to hydraulic control one-way valve F1, opens passings chamber before setting up high pressure passing chamber, realizes passing chamber and shifts to an earlier date pressure release, second stage: soft starting valve F3 plays one way valve effect, when passing push-and-pull head and a support push-and-pull close contact of oil cylinder G1, along with the increase of load, the pressure of passing in oil cylinder G1 passing chamber A constantly raises, in the time that 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 along with the continuous increase of pressure is all opened gradually, 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 are worked, 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, is provided with sealing ring 6.
Set up uniformly pressure in order to be beneficial in passing oil cylinder G1 tries to stop people from fighting each other chamber B, several throttle orifices 21 in the present embodiment are symmetrical about the straight line at spool 2 axle places, and several flowing holes 22 are also symmetrical about the straight line at spool 2 axle places.
Although the utility model is described with reference to best interpretations embodiment of the present utility model here, but, should be appreciated that, those skilled in the art can design a lot of other modification and embodiments, and these are revised and within embodiment will drop on the disclosed principle scope and spirit of the application.More particularly, in the scope of, accompanying drawing open in the application and claim, can carry out multiple modification and improvement to the building block of subject combination layout and/or layout.Except modification that building block and/or layout are carried out with improving, to those skilled in the art, other purposes will be also 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 that is 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) and 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 threaded with the tail end of housing (1), the head end of housing (1) is for passing the oil cylinder chamber joint (A) of trying to stop people from fighting each other, the tail end of connector (4) is main valve group reversal valve joint (P), when spring (3) is during in relaxed state, throttle orifice (21) with pass the 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 try to stop people from fighting each other chamber joint (A) cut off, when spring (3) is during in compressive state, throttle orifice (21) with pass the oil cylinder chamber joint (A) of trying to stop people from fighting each other and be communicated with, flowing hole (22) and the passing oil cylinder chamber joint (A) of trying to stop people from fighting each other is communicated with.
2. soft starting valve according to claim 1, is characterized in that: between the contact surface of described spool (2) and housing (1), be provided with sealing ring (7).
3. soft starting valve according to claim 1, is characterized in that: between the contact surface of described connector (4) and spool (2), be provided with sealing ring (6).
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 |
|---|---|---|---|
| CN201320802596.8U CN203702216U (en) | 2013-12-09 | 2013-12-09 | Soft-start valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320802596.8U CN203702216U (en) | 2013-12-09 | 2013-12-09 | Soft-start valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203702216U true CN203702216U (en) | 2014-07-09 |
Family
ID=51052671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320802596.8U Withdrawn - After Issue CN203702216U (en) | 2013-12-09 | 2013-12-09 | Soft-start valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203702216U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670476A (en) * | 2013-12-09 | 2014-03-26 | 四川航天电液控制有限公司 | Soft starting valve |
| CN108087597A (en) * | 2017-12-18 | 2018-05-29 | 捷锐企业(上海)有限公司 | A kind of medical gas safety valve |
| CN111720381A (en) * | 2020-06-29 | 2020-09-29 | 潍柴动力股份有限公司 | Balance valve, hydraulic control system and engineering machinery |
-
2013
- 2013-12-09 CN CN201320802596.8U patent/CN203702216U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103670476A (en) * | 2013-12-09 | 2014-03-26 | 四川航天电液控制有限公司 | Soft starting valve |
| CN103670476B (en) * | 2013-12-09 | 2015-09-09 | 四川航天电液控制有限公司 | Soft starting valve |
| CN108087597A (en) * | 2017-12-18 | 2018-05-29 | 捷锐企业(上海)有限公司 | A kind of medical gas safety valve |
| CN111720381A (en) * | 2020-06-29 | 2020-09-29 | 潍柴动力股份有限公司 | Balance valve, hydraulic control system and engineering machinery |
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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: 20140709 Effective date of abandoning: 20150909 |
|
| RGAV | Abandon patent right to avoid regrant |