CN203614487U - Hydraulic control one-way valve - Google Patents
Hydraulic control one-way valve Download PDFInfo
- Publication number
- CN203614487U CN203614487U CN201320661882.7U CN201320661882U CN203614487U CN 203614487 U CN203614487 U CN 203614487U CN 201320661882 U CN201320661882 U CN 201320661882U CN 203614487 U CN203614487 U CN 203614487U
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- Prior art keywords
- passage
- control piston
- valve
- pilot operated
- operated check
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- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model relates to a hydraulic control one-way valve, which comprises a valve body and an axial passage, wherein the axial passage is arranged in the valve body and comprises a first installing passage, a second installing passage and a liquid inlet passage, the liquid inlet passage is arranged between the first installing passage and the second installing passage, a control piston is arranged in the first installing passage, a base of the control piston is in contact with a first valve seat, a valve core control structure is arranged in the second installing passage, one side, positioned at the base of the control piston, of the first installing passage is provided with an oil supply passage, one side of the first installing passage is also provided with an oil drainage passage, and an annular plate arranged at one side of the oil drainage passage is sheathed on the control piston. The hydraulic control one-way valve has the advantages that the annular plate and the liquid inlet passage are separated through the oil drainage passage, and liquid entering from the liquid inlet passage only acts on the end surface of a push rod of the control piston, so the control pressure of the valve body opening is effectively reduced, the control pressure of pressure oil in the oil supply passage is reduced, the precision of the valve core control structure is high, and the liquid leakage phenomenon cannot occur.
Description
Technical field
The utility model relates to a kind of one-way valve, especially a kind of Pilot operated check valve.
Background technique
Pilot operated check valve is to rely on to control hydrodynamic pressure, can make the valve of one-way valve reverse circulated.This valve occupies compared with consequence in the hydraulic prop equipment of coal mine machinery, Pilot operated check valve and the common one-way valve difference oil circuit control K that has been many, in the time of oil circuit control 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, in the time of the input of oil circuit control oil pilot pressure, piston mandril moves right under pressure oil effect, backs down one-way valve with push rod, and oil inlet and outlet is connected.
In fluid technique equipment, usually comprise the one-way valve as apparatus control system constituent element, due to the different structure of equipment, for example, pressure rating, volume flowrate, the difference of mounting point, adopt the one-way valve of the cracking pressure of active side fixed adjustment can not carry out trouble-free control, in this case, one-way valve in the time that equipment investment moves just must change into this equipment in the one-way valve that matches of cracking pressure, and, if while supplying the pressure of oil supply excessive, can cause the interior liquid communication control of valve body not accurate, the phenomenon of leakage, and all more complicated of existing fluid-control one-way valve arrangement on the market.
Model utility content
The purpose of this utility model is in order to solve the existing defect of Pilot operated check valve in prior art, provides a kind of simple in structure, reduces pressure oil pilot pressure, the Pilot operated check valve that control accuracy is high.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of Pilot operated check valve, comprise valve body, be arranged on the axial passage in this valve body and be arranged on the both sides of axial passage and with sealed at both ends the first valve seat being connected of described valve body and the second valve seat, described axial passage comprises the first installation passage, and second installs passage and be arranged on the described first fluid passage of installing between passage and the second installation passage;
In described the first installation passage, be provided with control piston, the base of this control piston contacts with the first valve seat, in described the second installation passage, is provided with spool control structure;
One side of described fluid passage is provided with feed pathway, and the second side that passage is installed is provided with liquid outlet channel, and the side that described the first installation passage is positioned at described control piston base is provided with oil supply gallery;
The described first side that passage is installed is also provided with draining passage, and the annular slab of draining passage one side is sleeved on described control piston; Described spool control structure comprises and is fixed on the stage clip on described the second valve seat and is sleeved on the main valve plug on this stage clip.
Above-mentioned a kind of Pilot operated check valve, is provided with radial flange between described the second installation passage and fluid passage, and the omoplate of described main valve plug contacts with this radial flange.
Above-mentioned a kind of Pilot operated check valve, described control piston comprises base and push rod, it is interior and corresponding with the end face of described main valve plug that this push rod extend into described fluid passage.
Above-mentioned a kind of Pilot operated check valve, described oil supply gallery and draining passage are set up in parallel.
Above-mentioned a kind of Pilot operated check valve, the liquid entering hole of described feed pathway is between described push rod and the end face of main valve plug.
The beneficial effects of the utility model are: the draining passage of this Pilot operated check valve separates annular slab and feed pathway, the liquid entering from feed pathway only acts on the end face of control piston push rod, thereby effectively reduce the pilot pressure that valve body is opened, reduce the pilot pressure of oil supply gallery internal pressure oil, drive control piston to move axially by the pressure oil in oil supply gallery, control piston backs down spool control structure, thereby control fluid passage and second and passage is installed in connected state, the precision of spool control structure is high, there will not be the phenomenon of leakage.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Embodiment
For making that structure characteristic of the present utility model and effect of reaching are had and further understand and be familiar with, coordinate detailed explanation in order to preferred embodiment and accompanying drawing, be described as follows:
As shown in Figure 1, a kind of Pilot operated check valve, comprise valve body 1, be arranged on the axial passage in this valve body 1 and be arranged on the both sides of axial passage and with sealed at both ends the first valve seat 2 being connected of valve body 1 and the second valve seat 3, the first valve seat 2 and the second valve seat 3 are equipped with seal ring with the joint of valve body 1, axial passage comprises the first installation passage 4, second passage 5 is installed and be arranged on the first installation passage 4 and second install fluid passage 6, the first between passage 5 install logical 4, second passage 5 is installed and fluid passage 6 is positioned on same axis;
In the first installation passage 4, be provided with control piston 7, the base 15 of this control piston 7 contacts with the first valve seat 2, in the second installation passage 5, be provided with spool control structure, one side of fluid passage 6 is provided with feed pathway 8, the second side that passage 5 is installed is provided with liquid outlet channel 9, the side that the first installation passage 4 is positioned at control piston 7 bases is provided with oil supply gallery 10, as improvement of the present utility model, the first side that passage 4 is installed is also provided with draining passage 12, oil supply gallery 10 and draining passage 12 are set up in parallel, the annular slab 17 of draining passage 12 1 sides is sleeved on control piston 7, spool control structure comprises and is fixed on the stage clip 11 on the second valve seat 3 and is sleeved on the main valve plug 13 on stage clip 11.
Between the second installation passage 5 and fluid passage 6, be provided with radial flange 14, the omoplate of main valve plug 13 contacts with this radial flange 14, and control piston 7 comprises base 15 and push rod 16, and it is interior and corresponding with the end face of main valve plug 13 that this push rod 16 extend into fluid passage 6.
When supplying with to oil supply gallery 10 after the pressure oil of certain pressure, pressure oil drives control piston 7 to promote to the right, now the push rod 16 of control piston 7 contacts with main valve plug 13 and drives main valve plug 13 to retreat, now stage clip 11 is in compressive state, the radial flange 14 being provided with between the omoplate of main valve plug 13 and the second installation passage 5 and fluid passage 6 separates, fluid passage 6 and second is installed passage 5 in connected state, now the liquid runs down fluid passage 6 in feed pathway 8 enters into the second installation passage 5 and flows out from liquid outlet channel 9, after oil supply gallery 10 internal pressure oil pressures reduce, control piston 7 is moved to the left, stage clip 11 resets, main valve plug 13 resets, its omoplate contacts with radial flange 14, now fluid passage 6 and second is installed passage 5 in closed condition, this Pilot operated check valve control piston highly sensitive, be applicable to the cracking pressure of various different sizes, the precision of spool control structure is high, there will not be the phenomenon of leakage.
In the utility model, draining passage 12 separates annular slab 17 and feed pathway 8, the liquid entering hole of feed pathway 8 is between the push rod 16 of control piston 7 and the end face of main valve plug 13, the liquid entering from feed pathway 8 only acts on the end face of control piston push rod 16, thereby effectively reduce the pilot pressure that valve body is opened, the pilot pressure that has reduced oil supply gallery 10 internal pressure oil, has increased the unlatching sensitivity of this Pilot operated check valve.
More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what in above-described embodiment and specification, describe is principle of the present utility model; under the prerequisite that does not depart from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall in claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.
Claims (5)
1. a Pilot operated check valve, comprise valve body, be arranged on the axial passage in this valve body and be arranged on the both sides of axial passage and with sealed at both ends the first valve seat being connected of described valve body and the second valve seat, described axial passage comprises the first installation passage, and second installs passage and be arranged on the described first fluid passage of installing between passage and the second installation passage;
In described the first installation passage, be provided with control piston, the base of this control piston contacts with the first valve seat, in described the second installation passage, is provided with spool control structure;
One side of described fluid passage is provided with feed pathway, and the second side that passage is installed is provided with liquid outlet channel, and the side that described the first installation passage is positioned at described control piston base is provided with oil supply gallery;
It is characterized in that, the described first side that passage is installed is also provided with draining passage, and the annular slab of draining passage one side is sleeved on described control piston; Described spool control structure comprises and is fixed on the stage clip on described the second valve seat and is sleeved on the main valve plug on this stage clip.
2. a kind of Pilot operated check valve according to claim 1, is characterized in that, between described the second installation passage and fluid passage, is provided with radial flange, and the omoplate of described main valve plug contacts with this radial flange.
3. a kind of Pilot operated check valve according to claim 2, is characterized in that, described control piston comprises base and push rod, and it is interior and corresponding with the end face of described main valve plug that this push rod extend into described fluid passage.
4. a kind of Pilot operated check valve according to claim 1, is characterized in that, described oil supply gallery and draining passage are set up in parallel.
5. a kind of Pilot operated check valve according to claim 3, is characterized in that, the liquid entering hole of described feed pathway is between described push rod and the end face of main valve plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661882.7U CN203614487U (en) | 2013-10-23 | 2013-10-23 | Hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320661882.7U CN203614487U (en) | 2013-10-23 | 2013-10-23 | Hydraulic control one-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614487U true CN203614487U (en) | 2014-05-28 |
Family
ID=50767136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320661882.7U Expired - Fee Related CN203614487U (en) | 2013-10-23 | 2013-10-23 | Hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203614487U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286456A (en) * | 2016-10-26 | 2017-01-04 | 燕山大学 | A kind of hydraulic control one-way valve |
| CN109404574A (en) * | 2018-11-15 | 2019-03-01 | 长沙思胜智能设备有限公司 | The main hydraulic system of check valve and broaching machine |
-
2013
- 2013-10-23 CN CN201320661882.7U patent/CN203614487U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106286456A (en) * | 2016-10-26 | 2017-01-04 | 燕山大学 | A kind of hydraulic control one-way valve |
| CN109404574A (en) * | 2018-11-15 | 2019-03-01 | 长沙思胜智能设备有限公司 | The main hydraulic system of check valve and broaching machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |