CN202360488U - Hydraulic control one-way lock - Google Patents
Hydraulic control one-way lock Download PDFInfo
- Publication number
- CN202360488U CN202360488U CN201120418315XU CN201120418315U CN202360488U CN 202360488 U CN202360488 U CN 202360488U CN 201120418315X U CN201120418315X U CN 201120418315XU CN 201120418315 U CN201120418315 U CN 201120418315U CN 202360488 U CN202360488 U CN 202360488U
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- China
- Prior art keywords
- valve
- hydraulic control
- cavity
- piston
- valve seat
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- Expired - Fee Related
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Abstract
The utility model discloses a hydraulic control one-way lock which comprises a valve body provided with a containing cavity, a one-way valve component arranged at one side end of the containing cavity and a hydraulic control component arranged at the other side end of the containing cavity, wherein the one-way valve component comprises a valve seat provided with a hole cavity, a valve shell provided with a liquid channel, a valve core used for plugging the hole cavity of the valve seat and a one-way valve reset elastic element; the hydraulic control component comprises a sealing piston, an ejector rob fixed on the piston, and a hydraulic control reset elastic element; a pressure relief cavity is arranged between the peripheral wall of the valve shell and the inner wall of the containing cavity; the circumferential wall of the valve shell is sequentially provided with a pressure relief inlet and a pressure relief outlet which are connected with the pressure relief cavity along the direction far away from the valve seat; and the valve core is provided with a liquid flow hole channel used for communicating the liquid channel with the pressure relief outlet. When the hydraulic control one-way lock is in use, the valve core can be opened only by applying little hydraulic control pressure, so that the control pressure needed by reverse opening can be reduced; in addition, after a thread part is unscrewed, the one-way valve component can be directly pulled out of the containing cavity, so that installation and maintenance can be very conveniently carried out.
Description
Technical field
The utility model belongs to the one-way valve technical field, is specifically related to a kind of fluid-control one-way lock that is used for mine hydraulic support.
Background technique
Pilot operated check valve is to rely on the control hydrodynamic pressure, can make the valve of one-way valve reverse circulated.This valve occupies than consequence in the hydraulic prop equipment of coal mine machinery.Pilot operated check valve and the common one-way valve difference control oil channel K that has been many, when control oil channel access failure pressure oil liquid, Pilot operated check valve is worked as common one-way valve, and pressure oil only flows to oil outlet from filler opening, can not reverse flow.When control oil channel has pilot pressure when input oil, piston mandril moves under the pressure oil effect, backs down one-way valve, makes pressure oil flow to oil outlet from filler opening and can flow to filler opening from oil outlet, also promptly makes the one-way valve reverse flow.
The tradition one-way valve comprises valve body, offers through hole in the valve body, and each part of Pilot operated check valve both in axial direction was assemblied in this through hole.This Pilot operated check valve is with hydraulic control power during with one-way valve opens; Be that pilot pressure liquid is guided in the piston cavity of piston rod; Piston push rod promotes spool and breaks away from sealing gasket under the effect of also pressure, thereby accomplishes the course of action of open check valve, and the Pilot operated check valve of this structure has following deficiency: at first; Piston push rod has occupied the part of one-way valve and has crossed the liquid passage, thereby the liquid level of crossing that has dwindled one-way valve amasss; Secondly, during the push rod unloading, because pressure in the system and pilot pressure are uneven, therefore can cause serious instantaneous pressure to impact, this transient impact pressure is higher than 190% to 380% of working pressure sometimes.So huge impact pressure not only causes strong vibrations, also may cause the fracture of piston push rod.
Summary of the invention
The purpose of the utility model provides less, the safe and reliable fluid-control one-way lock of a kind of compression shock.
The technological scheme that realizes the utility model purpose is: a kind of fluid-control one-way lock, comprise the valve body that is provided with holding cavity, liquid entering hole, liquid outlet, hydraulic control mouth, and be arranged on the check valve assembly of holding cavity one side and be arranged on the hydraulic control assembly of another side of holding cavity; Said check valve assembly comprises the valve seat that is provided with vestibule, the valve casing that is provided with fluid passage, the spool that is used for shutoff valve seat vestibule that can in the valve casing passage, slide, is used to the one-way valve return springs that spool provides reseting elasticity; Said hydraulic control assembly comprises the packed-piston that can in holding cavity, slide, is fixed on the push rod that is used for the said spool of roof pressure on the piston and is used to the hydraulic control return springs that packed-piston provides reseting elasticity; Be provided with pressure-releasing chamber between said valve casing periphery wall and the holding cavity inwall; Be provided with pressure release import and the pressure release outlet that links to each other with pressure-releasing chamber successively along the direction away from valve seat on the said valve casing perisporium, said spool is provided with the flow duct that is used to be communicated with fluid passage and pressure release outlet.
In the such scheme, said valve casing is provided with the outside thread district, and said valve casing is fixed in the valve body holding cavity through thread connecting mode.
In the such scheme, the part holding cavity cavity between said valve seat and the piston is as admission chamber, and the liquid entering hole on the said valve body is communicated with this admission chamber; Said holding cavity be positioned at piston away from the part cavity of valve seat one side as liquid controling cavity, said hydraulic control mouth is communicated with this liquid controling cavity; Said liquid outlet is communicated with pressure-releasing chamber.
In the such scheme, said valve casing is provided with inlet opening at its side away from valve seat, and said piston is provided with the spacing screw plug that is used for spacing piston in its side away from valve seat, establishes the hydraulic control passage that is communicated with liquid controling cavity in the said screw plug.
In the such scheme, said screw plug is provided with and the hydraulic control channel outlet at its side away from valve seat.
The utlity model has positive effect: only need apply very little fluid control pressure, can back down spool, so greatly reduce the required pilot pressure of reverse unlatching; In addition, the check valve assembly in the utility model can directly be extracted from holding cavity after the rib-loop portion of outwarding winding, and makes to install and safeguard comparatively facility.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Be labeled as shown in the accompanying drawing: valve body 1, holding cavity 11, liquid entering hole 12, liquid outlet 13, hydraulic control mouth 14, pressure-releasing chamber 15; Admission chamber 16, liquid controling cavity 17, check valve assembly 2, valve seat 21, vestibule 211, valve casing 22; Fluid passage 221, pressure release import 222, pressure release outlet 223, outside thread district 224, inlet opening 225; Spool 23, flow duct 231, one-way valve return springs 24, hydraulic control assembly 3, packed-piston 31; Push rod 32, hydraulic control return springs 33, spacing screw plug 34, hydraulic control passage 341, hydraulic control channel outlet 342.
Embodiment
(embodiment 1)
Fig. 1 is a kind of structural representation of the utility model, has shown a kind of embodiment of the utility model.
Present embodiment is a kind of fluid-control one-way lock that is used for mine hydraulic support; See shown in Figure 1; Comprise the valve body 1 that is provided with holding cavity 11, liquid entering hole 12, liquid outlet 13, hydraulic control mouth 14, be arranged on the check valve assembly 2 of holding cavity 11 1 sides and be arranged on the hydraulic control assembly 3 of holding cavity 11 another sides; Said check valve assembly 2 comprises the valve seat 21 that is provided with vestibule 211, the valve casing 22 that is provided with fluid passage 221, the spool 23 that is used for shutoff valve seat 21 vestibules 211 that can in valve casing 22 passages, slide, is used to the one-way valve return springs 24 that spool 23 provides reseting elasticity; Said hydraulic control assembly 3 comprises the packed-piston 31 that can in holding cavity 11, slide, is fixed on the push rod 32 that is used for the said spool 23 of roof pressure on the piston and is used to the hydraulic control return springs 33 that packed-piston 31 provides reseting elasticity; Be provided with pressure-releasing chamber 15 between said valve casing 22 periphery walls and holding cavity 11 inwalls; Be provided with the pressure release import 222 and pressure release outlet 223 that links to each other with pressure-releasing chamber 15 successively along the direction away from valve seat 21 on said valve casing 22 perisporiums, said spool 23 is provided with the flow duct 231 that is used to be communicated with fluid passage 221 and pressure release outlet 223.
Said valve casing 22 is provided with outside thread district 224, and said valve casing 22 is fixed in valve body 1 holding cavity 11 through thread connecting mode.
Said valve casing 22 is provided with inlet opening 225 at its side away from valve seat 21, and said piston is provided with the spacing screw plug 34 that is used for spacing piston in its side away from valve seat 21, establishes the hydraulic control passage 341 that is communicated with liquid controling cavity 17 in the said screw plug 34.
Said screw plug is provided with and hydraulic control channel outlet 342 at its side away from valve seat 21.
Present embodiment only need apply very little fluid control pressure in use, can back down spool, so greatly reduce the required pilot pressure of reverse unlatching; In addition, the check valve assembly in the utility model can directly be extracted from holding cavity after the rib-loop portion of outwarding winding, and makes to install and safeguard comparatively facility.
Obviously, the foregoing description of the utility model only be for explain clearly that the utility model does for example, and be not to be qualification to the mode of execution of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation that these connotations that belong to the utility model are extended out or change still belong to the protection domain of the utility model.
Claims (5)
1. a fluid-control one-way is locked; Comprise the valve body (1) that is provided with holding cavity (11), liquid entering hole (12), liquid outlet (13), hydraulic control mouth (14); Be arranged on the check valve assembly (2) of holding cavity (11) one sides and be arranged on the hydraulic control assembly (3) of another side of holding cavity (11); It is characterized in that: said check valve assembly (2) comprises the valve seat (21) that is provided with vestibule (211), the valve casing (22) that is provided with fluid passage (221), the spool (23) that is used for shutoff valve seat (21) vestibule (211) that can in valve casing (22) passage, slide, is used to the one-way valve return springs (24) that spool (23) provides reseting elasticity; Said hydraulic control assembly (3) comprises the packed-piston (31) that can in holding cavity (11), slide, is fixed on the push rod (32) that is used for the said spool of roof pressure (23) on the piston and is used to the hydraulic control return springs (33) that packed-piston (31) provides reseting elasticity;
Be provided with pressure-releasing chamber (15) between said valve casing (22) periphery wall and holding cavity (11) inwall; Be provided with pressure release import (222) and the pressure release outlet (223) that links to each other with pressure-releasing chamber (15) successively along the direction away from valve seat (21) on said valve casing (22) perisporium, said spool (23) is provided with the flow duct (231) that is used to be communicated with fluid passage (221) and pressure release outlet (223).
2. fluid-control one-way lock according to claim 1, it is characterized in that: said valve casing (22) is provided with outside thread district (224), and said valve casing (22) is fixed in valve body (1) holding cavity (11) through thread connecting mode.
3. fluid-control one-way lock according to claim 1, it is characterized in that: part holding cavity (11) cavity between said valve seat (21) and the piston (31) is as admission chamber (16), and the liquid entering hole (12) on the said valve body (1) is communicated with this admission chamber (16); Said holding cavity (11) be positioned at piston (31) away from the part cavity of valve seat (21) one sides as liquid controling cavity (17), said hydraulic control mouth (14) is communicated with this liquid controling cavity (17); Said liquid outlet (13) is communicated with pressure-releasing chamber (15).
4. fluid-control one-way lock according to claim 3; It is characterized in that: said valve casing (22) is provided with inlet opening (225) at its side away from valve seat (21); Said piston is provided with the spacing screw plug (34) that is used for spacing piston in its side away from valve seat (21), establishes the hydraulic control passage (341) that is communicated with liquid controling cavity (17) in the said screw plug (34).
5. fluid-control one-way lock according to claim 4, it is characterized in that: said screw plug is provided with and hydraulic control channel outlet (342) at its side away from valve seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120418315XU CN202360488U (en) | 2011-10-28 | 2011-10-28 | Hydraulic control one-way lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120418315XU CN202360488U (en) | 2011-10-28 | 2011-10-28 | Hydraulic control one-way lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360488U true CN202360488U (en) | 2012-08-01 |
Family
ID=46571677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120418315XU Expired - Fee Related CN202360488U (en) | 2011-10-28 | 2011-10-28 | Hydraulic control one-way lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202360488U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806590A (en) * | 2014-01-26 | 2015-07-29 | 高志勇 | Driving type high-low pressure valve of air cylinders |
-
2011
- 2011-10-28 CN CN201120418315XU patent/CN202360488U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806590A (en) * | 2014-01-26 | 2015-07-29 | 高志勇 | Driving type high-low pressure valve of air cylinders |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120801 Termination date: 20121028 |