CN206555197U - A kind of pressure-gradient control valve - Google Patents
A kind of pressure-gradient control valve Download PDFInfo
- Publication number
- CN206555197U CN206555197U CN201620913538.6U CN201620913538U CN206555197U CN 206555197 U CN206555197 U CN 206555197U CN 201620913538 U CN201620913538 U CN 201620913538U CN 206555197 U CN206555197 U CN 206555197U
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- CN
- China
- Prior art keywords
- valve
- pressure
- valve pocket
- gradient control
- 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.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000005255 carburizing Methods 0.000 claims abstract description 5
- 239000003607 modifier Substances 0.000 claims abstract description 5
- 238000010791 quenching Methods 0.000 claims abstract description 5
- 230000000171 quenching effect Effects 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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- Safety Valves (AREA)
Abstract
A kind of pressure-gradient control valve, including valve body, spring, valve pocket, spring base；The inner chamber of the utility model valve pocket is set to shoulder hole, and valve element left end head is designed to flange-type structure, in the inner chamber macropore for being arranged on valve pocket and valve body contact end.Spacing by former valve element is born by circlip for hole, and the anchor ring A for being designed as valve pocket is born, and valve pocket uses 40Cr materials, is carried out modifier treatment and is added surfaces nitrided processing；Valve element uses 20CrMnTi materials, and using carburizing and quenching processing, both the spacing intensity of valve pocket had been added, the wearability of valve pocket and valve element is improved again, it is rational in infrastructure because its intensity is high, wearability is good even if valve element frequent impact valve set in the pressure-gradient control valve course of work, so the operating efficiency of pressure-gradient control valve can be improved, service life is extended.Realize the Dual-pump flow-converging of hydraulic system, turn to preferential effect, its is more energy efficient compared with common steering, has promoted the technology of loading machine steering system to develop.
Description
Technical field
The utility model is related to a kind of pressure-gradient control valve, and the pressure-gradient control valve is used in engineering machinery loader hydraulic steering, makes
Hydraulic system realizes Dual-pump flow-converging, turns to preferential effect to reach the purpose of energy-conservation.
Background technology
Existing common pressure-gradient control valve both at home and abroad, as shown in figure 3, mainly have valve body 1, spring 2, spring base 3, valve pocket 4, valve element 5,
The grade of circlip for hole 6 is constituted.Its operation principle as shown in Fig. 2 sequence number 3. mouth be steering pump oil-feed port, sequence number 2. mouth with turn to
Device oil inlet is connected, and 4. mouth and the banked direction control valves oil inlet of work system are connected, and 1. mouth and the control mouth of steering gear are connected.When 3. mouth
During fuel feeding, hydraulic oil is through the priority of supply of valve element 5 to 2. mouth.When steering gear does not work, hydraulic oil is made after 2. mouth and choke valve
Used in control mouth 1. mouth, valve element 5 overcomes spring force to be moved to the left so that 3. mouth is connected with 4. mouth, turns to pump oil interflow and arrives job family
In system, so as to realize Dual-pump flow-converging.When steering gear works, 2. the diverted device of mouth is connected with steering cylinder, and steering pump comes oily
Into steering cylinder, make loading machine steering, now control mouth 1. mouth rapid pressure drop, valve element 5 is under spring force to the right
Mobile, the 3. connection of mouth and 4. mouth is cut off, so as to realize that steering is preferential.It can be seen that the course of work of pressure-gradient control valve is valve element 5 and bullet
Property back-up ring 6 frequent shock, because the intensity of circlip is relatively low, it is also easy to produce deformation in frequent hit or damaged,
The durability of product is have impact on, the problem of causing often change circlip greatly reduces production efficiency.
The content of the invention
The purpose of this utility model seeks to provide a kind of pressure-gradient control valve of new structure.It can overcome what prior art was present
The problem of circlip, low production efficiency need to often be changed.The purpose of this utility model is achieved in that a kind of pressure-gradient control valve,
Including valve body, spring, valve pocket, spring base, it is characterised in that：The inner chamber of valve pocket is set to shoulder hole, valve element left end head design
Into flange-type structure.
The shoulder hole of described valve pocket inner chamber, refers to that valve pocket and the inner chamber at valve body contact end are set to macropore, the other end is
Aperture.
In described valve element left end head flange-type structure, the inner chamber macropore for being arranged on valve pocket and valve body contact end.
Described valve pocket uses 40Cr materials, and heat treatment adds surfaces nitrided processing using modifier treatment.
Described valve element uses 20CrMnTi materials, and heat treatment is using carburizing and quenching processing.
The inner chamber of the utility model valve pocket is set to shoulder hole, and valve element left end head is designed to flange-type structure, is arranged on
In valve pocket and the inner chamber macropore at valve body contact end.Spacing by former valve element is born by circlip for hole, is designed as the ring of valve pocket
Face A is born, and valve pocket uses 40Cr materials, is carried out heat treatment process modifier treatment and is added surfaces nitrided processing；Valve element is used
20CrMnTi materials, heat treatment had both been added the spacing intensity of valve pocket, valve pocket and valve element is improved again using carburizing and quenching processing
Wearability, it is rational in infrastructure because its intensity is high, wearability is good even if valve element frequent impact valve set in the pressure-gradient control valve course of work,
So the operating efficiency of pressure-gradient control valve can be improved, service life is extended.Realize the Dual-pump flow-converging of hydraulic system, turn to preferential work
With its is more energy efficient compared with common steering, has promoted the technology of loading machine steering system to develop.
Brief description of the drawings
Fig. 1 the utility model structural representations；
Fig. 2 the utility model hydraulic schematic diagrams；
Fig. 3 prior art pressure-gradient control valve structural representations；
1st, valve body, 2, spring, 3, spring base, 4, valve pocket, 5, valve element.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings；
A kind of pressure-gradient control valve, including valve body 1, spring 2, spring base 3, valve pocket 4, it is characterised in that：The inner chamber of valve pocket 4 is set to
Shoulder hole, the left end head of valve element 5 is designed to flange-type structure.
The shoulder hole of the described inner chamber of valve pocket 4, refers to that valve pocket 4 and the inner chamber at valve body contact end are set to macropore, the other end
For aperture.
In the described left end head flange-type structure of valve element 5, the inner chamber macropore for being arranged on valve pocket 4 and valve body contact end.
Described valve pocket 4 uses 40Cr materials, and heat treatment adds surfaces nitrided processing using modifier treatment.
Described valve element 5 uses 20CrMnTi materials, and heat treatment is using carburizing and quenching processing.
When it is implemented, as shown in figure 1, the utility model pressure-gradient control valve is by valve body 1, spring 2, spring base 3, valve pocket 4, valve element
5th, O-ring（1）, O-ring（2）, O-ring（3）, O-ring（4）, O-ring（5）, O-ring（6）And guard circle composition.
Valve element 5 is fitted into valve pocket 4, anchor ring A is spacing, while valve element 5 coordinates with valve pocket 4 for gap, gap coordinates scope
For 0.015-0.020 millimeters again, it is ensured that valve core movement flexibly avoids producing internal leakage.Spring 2, spring base 3, valve body are installed successively
1 and O-ring, guard circle etc., regulation pre-pressure of the spring make it meet the switching pressure required for hydraulic system, valve pocket 4 and valve body 1
Tightened after applying screw threads for fastening agent by prescribed torque, prevent it from loosening.By work system multi-way valve body inner chamber, pressure-gradient control valve 2. mouth
Connected with steering gear oil inlet, at the same pressure-gradient control valve 2. mouth through choke valve, 1. mouth is connected with control mouth.When steering gear works, 3. oral fluid
2. cause for gossip is turned now to force feed priority of supply, and 1. the increase of mouth pressure overcomes spring force to promote valve element 5 to move when steering gear does not work, 3.
Oral fluid force feed switches to 4. mouth, realizes Dual-pump flow-converging.
Claims (5)
1. a kind of pressure-gradient control valve, including valve body（1）, spring（2）, spring base（3）, valve pocket（4）, it is characterised in that：Valve pocket（4）It is interior
Chamber is set to shoulder hole, valve element（5）Left end head is designed to flange-type structure.
2. a kind of pressure-gradient control valve according to claim 1, it is characterised in that：Described valve pocket（4）The shoulder hole of inner chamber, refers to
Valve pocket（4）With valve body（1）The inner chamber of contact jaw is set to macropore, and the other end is aperture.
3. a kind of pressure-gradient control valve according to claim 1 or 2, it is characterised in that：Described valve element（5）Left end head flange form
Structure, is arranged on valve pocket（4）With valve body（1）In the inner chamber macropore of contact jaw.
4. a kind of pressure-gradient control valve according to claim 1, it is characterised in that：Described valve pocket（4）Using 40Cr materials, at heat
Reason adds surfaces nitrided processing using modifier treatment.
5. a kind of pressure-gradient control valve according to claim 1, it is characterised in that：Described valve element（5）Using 20CrMnTi materials,
Heat treatment is using carburizing and quenching processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913538.6U CN206555197U (en) | 2016-08-22 | 2016-08-22 | A kind of pressure-gradient control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620913538.6U CN206555197U (en) | 2016-08-22 | 2016-08-22 | A kind of pressure-gradient control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206555197U true CN206555197U (en) | 2017-10-13 |
Family
ID=60369450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620913538.6U Expired - Fee Related CN206555197U (en) | 2016-08-22 | 2016-08-22 | A kind of pressure-gradient control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206555197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236817A (en) * | 2021-05-31 | 2021-08-10 | 江苏金陵智造研究院有限公司 | Flow control valve and safety control method |
-
2016
- 2016-08-22 CN CN201620913538.6U patent/CN206555197U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113236817A (en) * | 2021-05-31 | 2021-08-10 | 江苏金陵智造研究院有限公司 | Flow control valve and safety control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |