CN207762307U - A kind of pressure limiting valve and engine system - Google Patents
A kind of pressure limiting valve and engine system Download PDFInfo
- Publication number
- CN207762307U CN207762307U CN201721637654.0U CN201721637654U CN207762307U CN 207762307 U CN207762307 U CN 207762307U CN 201721637654 U CN201721637654 U CN 201721637654U CN 207762307 U CN207762307 U CN 207762307U
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- CN
- China
- Prior art keywords
- valve
- elastic force
- screw hole
- spring
- pressure limiting
- 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
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Abstract
The utility model discloses a kind of pressure limiting valve and engine systems,The pressure limiting valve includes valve body,Valve seat,Seal valve plug,Elastic force adjusting screw rod,Spring,Elastic force adjustment seat,The valve body upper end is equipped with socket part and accesses engine pressure restriction site,The valve seat is equipped with screw hole,The valve body side is equipped with relief hole,The sealing valve plug is equipped with valve plug skirt,The spring upper end is socketed in the valve plug skirt,The elastic force adjustment seat is equipped with a guide post,The guide post is socketed in the lower spring end,The elastic force adjustment seat is equipped with a cooperation screw hole,The coaxial arrangement of the cooperation screw hole and the screw hole and the equal spiral shell in aperture are to identical,The elastic force adjusting screw rod is equipped with external screw thread,The external screw thread is engaged with the screw hole and the cooperation screw hole,The pressure limiting valve is versatile,So that the engine system is safeguarded and production cost reduces.
Description
Technical field
The utility model is related to engine art more particularly to a kind of pressure limiting valve and engine systems.
Background technology
Motive power outputting apparatus of the engine as mainstream, including multiple systems, such as lubrication, cooling, fuel oil, air inlet are mainly
Work system, in such systems the effect of pressure limiting valve respectively be control lubricating oil pressure, cooling water pressure, fuel pressure, into
The important engine work bound index such as atmospheric pressure, conventional engine pressure limiting valve is with reference to described in 201620974019 .0, the limit
Pressure valve includes the components such as valve body, spool, spring, valve seat, which is provided with a guide ring to avoid spring warpage, disadvantage
It is that the setting of the guide ring disturbs the impulse stroke of spring.It is all essential portion to state pressure limiting valve in system on the engine
Part, and since fluid properties difference, corresponding required pressure limits are also different in each system, such as the oil of lubricating oil
Pressure limitation and the oil pressure limitation of fuel oil are different, therefore a kind of adjustable pressure limits of design are common to the above-mentioned system of engine
The pressure limiting valve of system is highly beneficial.
Utility model content
In order to solve the problems of the above-mentioned prior art, the utility model proposes a kind of pressure limiting valve and engine systems
System, using can be with the setting of adjustment spring rate of tension so that and the pressure limits of pressure-limiting valve of engine no longer immobilize,
And being arranged under the premise of not interfering spring works stroke for adjustment spring rate of tension also has the function of preventing spring warpage.
What the technical solution of the utility model was realized in：
A kind of pressure limiting valve, which is characterized in that including valve body, valve seat, sealing valve plug, elastic force adjusting screw rod, spring, elastic force tune
Seat is saved, the valve body upper end is equipped with socket part and accesses engine pressure restriction site, and the valve seat is equipped with screw hole, the valve body-side
Face is equipped with relief hole, and the sealing valve plug is equipped with valve plug skirt, and the spring upper end is socketed in the valve plug skirt, the elastic force tune
It saves seat and is equipped with a guide post, which is socketed in the lower spring end, and the elastic force adjustment seat is equipped with a cooperation screw hole, should
Coordinating the coaxial arrangement of screw hole and the screw hole and the equal spiral shell in aperture is to identical, the elastic force adjusting screw rod is equipped with external screw thread, this
External screw thread is engaged with the screw hole and the cooperation screw hole.
In this pressure limiting valve of the utility model, the elastic force adjustment seat is adjusted to upper limit position state, the pressure release
When the standard-sized sheet of hole, the sealing valve plug bottom surface resists elastic force adjustment seat top surface.
In this pressure limiting valve of the utility model, the minimum altitude of the guide post is in compression stage higher than the spring
Length in limited time.
On the basis of above, the utility model also provides engine system, which is characterized in that the engine system includes
Above-mentioned pressure limiting valve.
This pressure limiting valve and engine system for implementing the utility model, have the advantages that：It is adjusted by rotating
It saves screw rod and elastic force adjustment seat can be changed at a distance from sealing valve plug bottom surface, to the rate of tension of adjustment spring so that engine limits
Pressure valve can be adapted for the engine pressure limiting position of all kinds of different fluid properties, improve the versatility of pressure-limiting valve of engine, drop
The low production maintenance cost of engine.Elastic force adjustment seat is socketed in spring, is not contradicted with valve plug skirt so that spring has enough
Guiding distance and do not interfere spring-compressed stroke, the minimum altitude setting of guide post is more than length when spring reaches compression limit
Degree so that when engine pressure regulator site instantaneous pressure is excessive, spring-compressed stroke is no more than its compression limit stroke, improves
Spring service life.
Description of the drawings
Fig. 1 is the preferred structure schematic diagram of the pressure limiting valve of the utility model；
Fig. 2 is the partial view of Fig. 1；
Fig. 3 is the engine system schematic diagram of the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe.
This pressure limiting valve of the utility model as shown in Fig. 1 to 2, including valve body 1, socket part 11, valve seat 12, relief hole
13, screw hole 14, elastic force adjusting screw rod 15, sealing valve plug 2, valve plug skirt 21, elastic force adjustment seat 3, guide post 31, cooperation screw hole 32,
Spring 4,4 one end of spring are socketed in valve plug skirt 21, and the other end is socketed on outside guide post 31, and is against in elastic force adjustment seat 31,
So that spring 4 in compression process, not will produce warpage and damage, valve plug skirt 21 is socketed on spring 4 respectively with guide post 31
It is inside and outside but also the stroke of sealing valve plug 2 will not be influenced by guide post 31, and spring 4 can be also oriented to greatest extent
Distance.
Socket part 11 is socketed on engine and needs pressure controlled position, when Fluid pressure is more than that engine work limits pressure
When power, Fluid pressure is more than the elastic force of spring 4, and sealing valve plug 2 presses spring 4, and relief hole 13 opens pressure release, and Fluid pressure is replied
After the normal pressure of engine work, spring 4 pushes sealing valve plug 2 to return back to sealing station, and elastic force adjusting screw rod 15 is equipped with outer
Screw thread, screw hole 14 with cooperation 32 coaxial arrangement of screw hole, elastic force adjusting screw rod 15 be screwed on screw hole 14 and cooperation screw hole 32, pass through rotation
Turn screw rod 15 and adjust elastic force adjustment seat 3 at a distance from sealing valve plug 2, which can make pressure-limiting valve of engine be in close
The rate of tension of spring 4 can be adjusted as needed when envelope state, such as engine fuel pipeline operating oil pressure and coolant liquid club man
Have larger difference as hydraulic pressure, at this time can turn elastic force adjusting screw rod 15 so that pressure-limiting valve of engine be suitable for different work pressures
Power requirement.
When the section of elastic force adjustment seat tune 3 to upper limit position state, 13 standard-sized sheet of relief hole, 2 bottom surface of sealing valve plug resists elastic force
The top surface of adjustment seat 3, limited spring 4 continue downward invalid compression travel, improve spring service life.
In this pressure limiting valve of the utility model, when the minimum altitude of guide post 31 is in compression limit more than spring 4
Length, avoid when engine fluid pipe blocks, manage in instantaneous pressure drastically increase, will sealing valve plug 2 press
To closest to the position of valve seat 12,4 compression travel of spring is more than the spring-compressed limit, the case where causing spring 4 to fail.
Another aspect according to the present utility model, the application also provide a kind of engine system as shown in Figure 3, should
Engine system includes that above-mentioned pressure limiting valve and air cleaner 111, fan 112, cam valve train 113, bent axle pass
The components such as motivation structure 114, lubricating oil pump 115, cylinder body 116, water pump 117, the pressure limiting valve in the engine system is versatile, can
It is widely used in engine aspirating system, cooling system, fuel system, lubricating system etc. and needs the system for carrying out pressure control
In, save the cost of engine production and subsequent maintenance.
The pressure limiting valve of implementation the present embodiment and another advantageous effect of engine system are：With pressure limiting valve it is long when
Between use, will inevitably have segment fluid flow and pass through in the contact gap for sealing valve plug 2 and 1 inner wall of valve body overflow to valve body
It in 1 lower half, does not clear up spring will be caused to corrode for a long time, reduce the physical life of pressure limiting valve, and influence into engine
Leakproofness in each system, and in this pressure limiting valve and engine system of the utility model, it is only necessary to elastic force is adjusted
Screw rod back-out can release fluid, easy to operate, highly practical.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Utility model spirit and principle within, made by any modification, equivalent replacement and improve etc., should be included in the utility model
Protection domain within.
Claims (4)
1. a kind of pressure limiting valve, which is characterized in that adjusted including valve body, valve seat, sealing valve plug, elastic force adjusting screw rod, spring, elastic force
Seat, the valve body upper end are equipped with socket part and access engine pressure restriction site, and the valve seat is equipped with screw hole, the valve body side
Equipped with relief hole, the sealing valve plug is equipped with valve plug skirt, and the spring upper end is socketed in the valve plug skirt, and the elastic force is adjusted
Seat is equipped with a guide post, which is socketed in the lower spring end, and the elastic force adjustment seat is equipped with a cooperation screw hole, this is matched
It closes the coaxial arrangement of screw hole and the screw hole and the equal spiral shell in aperture is to identical, for the elastic force adjusting screw rod equipped with external screw thread, this is outer
Screw thread is engaged with the screw hole and the cooperation screw hole.
2. a kind of pressure limiting valve according to claim 1, which is characterized in that the elastic force adjustment seat is adjusted to upper limit position shape
State, when the relief hole standard-sized sheet, the sealing valve plug bottom surface resists elastic force adjustment seat top surface.
3. a kind of pressure limiting valve according to claim 1, which is characterized in that the minimum altitude of the guide post is higher than the bullet
Spring is in length when compression limit.
4. a kind of engine system, which is characterized in that the engine system includes a kind of pressure limiting valve in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637654.0U CN207762307U (en) | 2017-11-30 | 2017-11-30 | A kind of pressure limiting valve and engine system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721637654.0U CN207762307U (en) | 2017-11-30 | 2017-11-30 | A kind of pressure limiting valve and engine system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207762307U true CN207762307U (en) | 2018-08-24 |
Family
ID=63189541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721637654.0U Expired - Fee Related CN207762307U (en) | 2017-11-30 | 2017-11-30 | A kind of pressure limiting valve and engine system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207762307U (en) |
-
2017
- 2017-11-30 CN CN201721637654.0U patent/CN207762307U/en not_active Expired - Fee Related
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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: 20180824 Termination date: 20181130 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |