CN202579406U - Hydraulic valve bank for unloading low-pressure pilot valve - Google Patents
Hydraulic valve bank for unloading low-pressure pilot valve Download PDFInfo
- Publication number
- CN202579406U CN202579406U CN 201220222285 CN201220222285U CN202579406U CN 202579406 U CN202579406 U CN 202579406U CN 201220222285 CN201220222285 CN 201220222285 CN 201220222285 U CN201220222285 U CN 201220222285U CN 202579406 U CN202579406 U CN 202579406U
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- China
- Prior art keywords
- valve
- valve rod
- hydraulic
- bank
- pressure pilot
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- Expired - Fee Related
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- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
A hydraulic valve bank for unloading a low-pressure pilot valve comprises a valve body, a valve rod, an oil port end cover, a limiting end cover, a return spring and an O-shaped ring, wherein the valve rod is installed inside the valve body, the oil port end cover and the limiting end cover are fixed on two ends of the valve body through the O-shaped ring, and one end of the valve rod is provided with the return spring. The hydraulic valve bank has good wear resistance, the service life of a main product can be effectively prolonged while the performance of the product is guaranteed, the appearance size of the product is small, convenience in installation can be realized, an electric control way can be updated, and convenience in operation can be realized.
Description
Technical field
The utility model relates to multi-way valve, is specially a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve.
Background technique
At present, in mechanical engineering technical field, the existence of host computer system unloading valve group is necessary; Main engine starting is controlled direct oil sump tank through the off-load group, can reduce the loss of energy under standby; Used in the market pilot valve is plug-in type or board-like installation mostly; Also need produce supporting installation valve body, product cost is higher relatively, and operation is also inconvenient.
Based on the above shortcoming, truly have and make improved needs.
The model utility content
The technical problem that the utility model solved is to provide a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the utility model solved adopts following technological scheme to realize:
A kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve; Comprise by valve body, valve rod, hydraulic fluid port end cap, spacing end cap, Returnning spring, O type circle; Said valve rod is installed in the said valve body; Said hydraulic fluid port end cap and spacing end cap are fixed on said two ends of valve body through said O type circle, and an end of said valve rod is equipped with said Returnning spring.
The right-hand member of said valve rod is processed with drain pan.
Be provided with balancing slit at said valve rod and P mouth joint.
Said valve rod left end is processed with cross recess.
The material of said 0 type circle is that shore hardness is 90 nitrile butadiene rubber.
Beneficial effect
A kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve of the utility model has good wear resistance, when guaranteeing product performance, can effectively improve the life-span of main article, and the product design size is little, is convenient to install, and scalable is automatically controlled mode, easy-to-operat.
Description of drawings
Fig. 1 is a kind of hydraulic valve bank schematic representation that is used for the off-load of low pressure pilot valve.
Among Fig. 1: hydraulic fluid port end cap 1, valve body 2, valve rod 3, spacing end cap 4, Returnning spring 5, drain pan 6, O type circle 7, balancing slit 8, cross recess 9.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
A kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve; Comprise by valve body 2, valve rod 3, hydraulic fluid port end cap 1, spacing end cap 4, Returnning spring 5, O type circle 7; Said valve rod 3 is installed in the said valve body 2; Said hydraulic fluid port end cap 1 and spacing end cap 4 are fixed on the two ends of said valve body 2 through said O type circle 7, and an end of said valve rod 3 is equipped with said Returnning spring 5.
The right-hand member of said valve rod is processed with drain pan.
Be provided with balancing slit 8 at said valve rod 3 with P mouth joint.
Said valve rod left end is processed with cross recess.
The material of said 0 type circle 7 is that shore hardness is 90 nitrile butadiene rubber.
With reference to figure 1, a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve, during work, original state is that the P mouth communicates with the T mouth; System's main safety valve control oil pocket fluid flow to the T mouth through the P mouth, and system's main safety valve spool is a full-gear, and this moment, system was in unloading condition, when the L mouth gets into pilot pressure; The spring force that will overcome Returnning spring 5 in the spacing end cap 4 moves right valve rod 3, and valve rod 3 will cut off the oil circuit of P mouth to the T mouth this moment, and system main safety valve control oil pocket space is airtight; This safety valve will be set up pressure, make whole system set up pressure, and main frame is in holding state; When the L mouth does not have pressure oil, compressed Returnning spring 5 will make valve rod 3 to moving to left in the spacing end cap 4, reset until valve rod 3; Its return stroke is by the restriction of the step surface in the hydraulic fluid port end cap 1, and after valve rod 3 resetted, the P mouth communicated with the T mouth; System's main safety valve control oil pocket pressure release, this main safety valve spool standard-sized sheet, system is in unloading condition.Valve rod 3 oiling balancing slits 8 in this valve group make valve rod 3 move left and right in valve body 2 more flexibly, are not easy clamping stagnation; Valve rod 3 left ends are processed with cross recess 9, when the pressure oil of L mouth acts on valve rod 3, and will be from a part of fluid of cross recess 9 shuntings; Reduce the reversing impact of valve rod 3; The right-hand member of valve rod 3 is processed with drain pan 6, can make the fluid in the spacing end cap 4 when valve rod 3 switching-overs, flow to the T mouth, reduces valve rod 3 switching-over resistances; 0 type circle 7 adopt shore hardnesses be 90 butyronitrile as glue as Sealing, can prevent effectively that fluid from leaking outside.
More than show and described basic principle of the utility model and the advantage of major character and the utility model; The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the specification that the utility model just is described, under the prerequisite that does not break away from the utility model spirit and scope, the utility model also has various changes and modifications; These variations and improvement all fall in the utility model scope that requires protection, and the utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (5)
1. hydraulic valve bank that is used for the off-load of low pressure pilot valve; Comprise by valve body, valve rod, hydraulic fluid port end cap, spacing end cap, Returnning spring, O type circle; It is characterized in that; Said valve rod is installed in the said valve body, and said hydraulic fluid port end cap and spacing end cap are fixed on said two ends of valve body through said O type circle, and an end of said valve rod is equipped with said Returnning spring.
2. a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve according to claim 1 is characterized in that the right-hand member of said valve rod is processed with drain pan.
3. a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve according to claim 1 is characterized in that, is provided with balancing slit at said valve rod and P mouth joint.
4. a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve according to claim 1 is characterized in that said valve rod left end is processed with cross recess.
5. a kind of hydraulic valve bank that is used for the off-load of low pressure pilot valve according to claim 1 is characterized in that, the material of said 0 type circle is that shore hardness is 90 nitrile butadiene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222285 CN202579406U (en) | 2012-05-17 | 2012-05-17 | Hydraulic valve bank for unloading low-pressure pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220222285 CN202579406U (en) | 2012-05-17 | 2012-05-17 | Hydraulic valve bank for unloading low-pressure pilot valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202579406U true CN202579406U (en) | 2012-12-05 |
Family
ID=47248822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220222285 Expired - Fee Related CN202579406U (en) | 2012-05-17 | 2012-05-17 | Hydraulic valve bank for unloading low-pressure pilot valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202579406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792823A (en) * | 2019-10-11 | 2020-02-14 | 中国直升机设计研究所 | Hydraulic overcurrent protection device and method |
-
2012
- 2012-05-17 CN CN 201220222285 patent/CN202579406U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792823A (en) * | 2019-10-11 | 2020-02-14 | 中国直升机设计研究所 | Hydraulic overcurrent protection device and method |
| CN110792823B (en) * | 2019-10-11 | 2021-12-03 | 中国直升机设计研究所 | Hydraulic overcurrent protection device and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20170517 |