CN207437486U - Two level governor valve - Google Patents
Two level governor valve Download PDFInfo
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- CN207437486U CN207437486U CN201721585234.2U CN201721585234U CN207437486U CN 207437486 U CN207437486 U CN 207437486U CN 201721585234 U CN201721585234 U CN 201721585234U CN 207437486 U CN207437486 U CN 207437486U
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- valve
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- spool
- valve seat
- level governor
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Abstract
The utility model provides a kind of two level governor valve, belongs to field of mechanical technique.It solves the problems, such as that the prior art is poor there is stability.This two level governor valve, including valve body, there is inlet and outlet on the valve body, also there is the speed limit chamber that above-mentioned inlet and outlet is connected on the valve body, the speed limit intracavitary has valve rod, valve seat, returning spring, damping spring and spool, above-mentioned valve seat is located at the bottom of speed limit intracavitary, above-mentioned valve rod is connected at speed limit chamber port, above-mentioned returning spring between valve rod and valve seat and returning spring elastic force effect lower valve base have be resisted against the in vivo trend of valve, above-mentioned spool is located in valve seat and the two clearance fit, above-mentioned damping spring is between spool and valve seat, there is the trend away from valve seat in the elastic force effect bottom spool of damping spring, there is perforative oil return aperture on the spool.This two level governor valve stability is high.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of two level governor valve.
Background technology
Governor valve is by changing throttling section or chock length to control the valve of fluid flow.
Existing governor valve is either unloaded or load is all that the oil pump capacity of fluid is controlled by single mechanical structure.
Such as the special governor valve of a kind of fork truck that its publication number of Chinese patent CN106678107A is provided, include and be adapted
Valve chest and connector, offer external hydraulic fluid port Z on valve chest, external hydraulic fluid port P offered on connector, valve is equipped in valve chest
Core assembly, core assembly include speed limit valve body, speed limit spool, adjusting rod, throttling valve core, spring base and speed limit spring, limit
Fast spool can be axially slidably assemblied in the governor valve body, and one end of adjusting rod and the end face of the speed limit spool are mutually solid
It is fixed, spring base is equipped on the other end of adjusting rod, speed limit spring is assemblied between the spring base and speed limit valve body, throttle valve
Core can be axially slidably sheathed on the adjusting rod.
As can be seen that above-mentioned governor valve current limliting fast response time, can also show good under limiting condition.But it ties
Structure is complicated, and stability is not high.
The content of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, to provide a kind of stability height and structure is tight
The two level governor valve to gather.
The purpose of this utility model can be realized by following technical proposal：
A kind of two level governor valve including valve body, has inlet and outlet, which is characterized in that the valve body on the valve body
On also there is oil back chamber that above-mentioned inlet and outlet is connected, there is valve rod, valve seat, returning spring, resistance in the oil back chamber
Buddhist nun's spring and spool, above-mentioned valve seat are located at the bottom in oil back chamber, and above-mentioned valve rod is connected at oil back chamber port, above-mentioned reply
Spring is threadedly coupled between valve rod and valve seat, between valve seat and valve body and sealing structure is equipped between valve seat and valve body,
Above-mentioned spool is located in valve seat and the two clearance fit, and above-mentioned damping spring is between spool and valve seat, in damping spring
Elastic force effect bottom spool has the trend away from valve seat, has perforative oil return aperture on the spool.
In above-mentioned two level governor valve, the valve seat inner end has recessed seal receptacle, when spool is in load condition
Fluid can be such that spool end is resisted against at seal receptacle and form sealing therebetween.
When two level governor valve is in light condition, bottom spool is acted on away from seal receptacle in the elastic force of damping spring, at this point, valve
Have between on the outside of core and on the inside of valve seat for fluid by gap, meanwhile, the oil return aperture on spool also can be fuel-displaced.Namely
It says, divides two-way oil return under this state.
When two level governor valve is in load condition, spool is subject to oil pressure active force to overcome the elastic force of damping spring, spool end
Portion, which is resisted against on seal receptacle, forms sealing.At this point, only oil return aperture energy oil return.
In above-mentioned two level governor valve, the spool is cylindrical and spool one end has the gear edge that annular is protruded, on
It states gear and above-mentioned oil return aperture is formed along inside.
In above-mentioned two level governor valve, the gear forms the spring to match with damping spring along between spool inside
Chamber, one end of above-mentioned damping spring are located in spring cavity.
As can be seen that gear is along there are two effects：One forms above-mentioned oil return aperture；Secondly, for positioning damping spring
End.
In above-mentioned two level governor valve, keeping off along the upper one side with damping spring face has an inclined inclined-plane, above-mentioned time
Oily aperture is located at the bottom of the slope.
Such structure can be such that fluid is smoothly discharged by oil return aperture.
In above-mentioned two level governor valve, the gear edge is an integral structure with spool.
In above-mentioned two level governor valve, the valve seat is cylindrical and has the convex of protrusion at valve seat middle inside
Shoulder also has a ball in the valve seat, and above-mentioned ball is positioned at damping spring and convex shoulder between and in the elastic force work of damping spring
Above-mentioned ball has the trend being resisted against on convex shoulder under.
It can make fluid one-way flow in this spool under the action of ball.Ball is steel ball.
In above-mentioned two level governor valve, above-mentioned valve rod is connected in oil back chamber, and valve rod outer end is located on the outside of valve body, valve rod
Inner end can compress above-mentioned ball.
In above-mentioned two level governor valve, there is retainer ring between the valve rod outer end and valve body.
Mobile valve rod can push ball, this two level governor valve is made to force logical oil.
In above-mentioned two level governor valve, filter screen is fixed at the valve seat inner end.
In above-mentioned two level governor valve, sealing structure includes the sealing ring being arranged between valve seat and valve body.
Compared with prior art, this two level governor valve different goes out oily due to being corresponded to respectively under unloaded and load condition
State, therefore, applicability and stability are higher.
Meanwhile valve seat, valve rod, returning spring, damping spring and ball etc. are respectively positioned in valve body, structure is also relatively tighter
It gathers, there is very high practical value.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of this two level governor valve.
Fig. 2 is the structure diagram at spool in this two level governor valve.
In figure, 1, valve body；1a, oil back chamber；2nd, valve rod；3rd, valve seat；3a, seal receptacle；3b, convex shoulder；4th, returning spring；5th, hinder
Buddhist nun's spring；6th, spool；6a, oil return aperture；7th, ball；8th, retainer ring；9th, filter screen；10th, mandril；20th, sealing ring.
Specific embodiment
As shown in Figure 1, this two level governor valve, including valve body 1, has inlet and outlet, the valve body 1 on the valve body 1
On also have in oil back chamber 1a, the oil back chamber 1a that above-mentioned inlet and outlet is connected there is valve rod 2, valve seat 3, reply bullet
Spring 4, damping spring 5 and spool 6, above-mentioned valve seat 3 are located at the bottom in oil back chamber 1a, and above-mentioned valve rod 2 is connected to oil back chamber 1a
At port, above-mentioned returning spring 4 between valve rod 2 and valve seat 3, and returning spring 4 elastic force effect lower valve base 3 have support
The trend in valve body 1 is leaned against, be threadedly coupled between valve seat and valve body and sealing structure, above-mentioned valve are equipped between valve seat and valve body
Core 6 is located in valve seat 3 and the two clearance fit, and above-mentioned damping spring 5 is between spool 6 and valve seat 3, in damping spring 5
Elastic force effect bottom spool 6 has the trend away from valve seat 3, has perforative oil return aperture 6a on the spool 6.
3 inner end of valve seat has recessed seal receptacle 3a, and fluid can support 6 end of spool when spool is in load condition
It leans against at seal receptacle 3 and forms sealing therebetween.
As depicted in figs. 1 and 2, the spool 6 is cylindrical and 6 one end of spool has the gear edge that annular is protruded, above-mentioned gear
Above-mentioned oil return aperture 6a is formed along inside.
The gear forms the spring cavity to match with damping spring 5 along between 6 inside of spool, above-mentioned damping spring 5
One end is located in spring cavity.
Gear has inclined inclined-plane along the upper one side with 5 face of damping spring, and above-mentioned oil return aperture 6a is located at the bottom of the slope
Place.
The gear edge is an integral structure with spool 6.
The valve seat 3 is cylindrical and has the convex shoulder 3b of protrusion at 3 middle inside of valve seat, also has in the valve seat 3
There are a ball 7, above-mentioned ball 7 above-mentioned ball between damping spring 5 and convex shoulder 3b and under the elastic force effect of damping spring 5
7 have the trend being resisted against on convex shoulder 3b.
Above-mentioned valve rod 2 is connected in oil back chamber 1a, and 2 outer end of valve rod is located at 1 outside of valve body, and 2 inner end of valve rod can compress above-mentioned
Ball 7.
There is retainer ring 8 between 2 outer end of valve rod and valve body 1.
Filter screen 9 is fixed at 3 inner end of valve seat.
When two level governor valve is in light condition, bottom spool is acted on away from seal receptacle in the elastic force of damping spring, at this point, valve
Have between on the outside of core and on the inside of valve seat for fluid by gap, meanwhile, the oil return aperture on spool also can be fuel-displaced.Namely
It says, divides two-way fuel-displaced under this state.
When two level governor valve is in load condition, spool is subject to oil pressure active force to overcome the elastic force of damping spring, spool end
Portion, which is resisted against on seal receptacle, forms sealing.At this point, only oil return aperture can be fuel-displaced.
In addition, having a mandril 10 between ball 7 and valve rod 2, the outer diameter of mandril 10 is slightly less than 3 internal diameter of valve seat.
It is threadedly coupled between valve seat and valve body and sealing structure is equipped between valve seat and valve body.Sealing structure includes setting
Sealing ring 20 between valve seat and valve body.
Claims (10)
1. a kind of two level governor valve including valve body, has inlet and outlet, which is characterized in that on the valve body on the valve body
Also there is the oil back chamber that above-mentioned inlet and outlet is connected, there is valve rod, valve seat, returning spring, damping in the oil back chamber
Spring and spool, above-mentioned valve seat are located at the bottom in oil back chamber, and above-mentioned valve rod is connected at oil back chamber port, above-mentioned reply bullet
Spring is threadedly coupled between valve rod and valve seat, between valve seat and valve body and sealing structure is equipped between valve seat and valve body, on
It states spool to be located in valve seat and the two clearance fit, above-mentioned damping spring is between spool and valve seat, in the bullet of damping spring
Power effect bottom spool has the trend away from valve seat, has perforative oil return aperture on the spool.
2. two level governor valve according to claim 1, which is characterized in that the valve seat inner end has recessed seal receptacle,
Fluid can be such that spool end is resisted against at seal receptacle and form sealing therebetween when spool is in load condition.
3. two level governor valve according to claim 2, which is characterized in that the spool is cylindrical and spool one end has
The gear edge of annular protrusion, above-mentioned gear form above-mentioned oil return aperture along inside.
4. two level governor valve according to claim 3, which is characterized in that the gear is formed and resistance along between spool inside
The spring cavity that Buddhist nun's spring matches, one end of above-mentioned damping spring are located in spring cavity.
5. two level governor valve according to claim 3, which is characterized in that keeping off along the upper one side with damping spring face has
Inclined inclined-plane, above-mentioned oil return aperture are located at the bottom of the slope.
6. two level governor valve according to claim 3, which is characterized in that the gear edge is an integral structure with spool.
7. two level governor valve according to claim 2, which is characterized in that the valve seat it is cylindrical and on the inside of the valve seat in
At portion there is the convex shoulder of protrusion, also there is in the valve seat ball, above-mentioned ball between damping spring and convex shoulder and
Above-mentioned ball has the trend being resisted against on convex shoulder under the elastic force effect of damping spring.
8. two level governor valve according to claim 7, which is characterized in that above-mentioned valve rod is connected in oil back chamber, outside valve rod
End is located on the outside of valve body, and valve rod inner end can compress above-mentioned ball.
9. two level governor valve according to claim 2, which is characterized in that there is card between the valve rod outer end and valve body
Circle.
10. two level governor valve according to claim 2, which is characterized in that be fixed with filter screen at the valve seat inner end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585234.2U CN207437486U (en) | 2017-11-23 | 2017-11-23 | Two level governor valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721585234.2U CN207437486U (en) | 2017-11-23 | 2017-11-23 | Two level governor valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207437486U true CN207437486U (en) | 2018-06-01 |
Family
ID=62287815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721585234.2U Active CN207437486U (en) | 2017-11-23 | 2017-11-23 | Two level governor valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207437486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140000A (en) * | 2018-09-30 | 2019-01-04 | 嘉善海力达工具有限公司 | A kind of twin-stage speed limiting mechanism |
-
2017
- 2017-11-23 CN CN201721585234.2U patent/CN207437486U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109140000A (en) * | 2018-09-30 | 2019-01-04 | 嘉善海力达工具有限公司 | A kind of twin-stage speed limiting mechanism |
| CN109140000B (en) * | 2018-09-30 | 2023-09-01 | 嘉善海力达工具有限公司 | Two-stage speed limiting mechanism |
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