CN207471104U - A kind of safety valve, lubricating oil pump and engine - Google Patents
A kind of safety valve, lubricating oil pump and engine Download PDFInfo
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- CN207471104U CN207471104U CN201721141721.XU CN201721141721U CN207471104U CN 207471104 U CN207471104 U CN 207471104U CN 201721141721 U CN201721141721 U CN 201721141721U CN 207471104 U CN207471104 U CN 207471104U
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- spool
- safety valve
- elastic component
- oil
- chamber
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Abstract
This application discloses a kind of safety valve, lubricating oil pump and engines, wherein, safety valve includes valve body, spool and elastic component, valve body is provided with inner cavity and aerial drainage chamber, spool is slideably positioned in inner cavity, inner cavity is separated by spool into oil suction chamber and elastic component accommodating cavity, and elastic component is located in elastic component accommodating cavity, and elastic reaction is distinguished on spool and valve body in the both ends of elastic component；Spool penetrates through the dredging flow groove for offering connection elastic component accommodating cavity and aerial drainage chamber on the side spool wall of elastic component.When safety valve is not opened, oil suction chamber and draining chamber are closed by spool；When safety valve is opened, spool is to one Slideslip of elastic component accommodating cavity, spool connects oil suction chamber with draining chamber, start draining, elastic component accommodating cavity is connected always by the dredging flow groove on spool wall with draining chamber, gas and machine oil in elastic component accommodating cavity return to draining intracavitary by drain pan, so as to which spool will not be hindered to be moved to elastic component accommodating cavity side, ensure that the normally-open of safety valve.
Description
Technical field
The utility model is related to technical field of engines, more particularly to a kind of safety valve.It further relates to a kind of comprising the safety
The lubricating oil pump and engine of valve.
Background technology
Safety valve is a kind of overflow valve, excessively high for oil pressure in anti-locking system.By taking the oil-pump safety valve of engine as an example
It illustrates, oil-pump safety valve is arranged on the lubricating oil pump high-voltage oil cavity of engine or the pipeline of unicom high-voltage oil cavity, is used for
Oil pressure after unloading lubricating oil pump, protection system safety.
As shown in Figure 1, oil-pump safety valve mainly includes valve body 01, spool 03 and spring 02, spool 03 is slideably positioned in
In valve body 01,03 rear end opening of spool, preceding end closure tubular structure, spring 02 is located in the spring cavity after spool 03, spring
Elastic reaction is distinguished in 03 rear end of valve body 01 and spool, the oil inlet of oil-pump safety valve and the high pressure oil of lubricating oil pump in 02 both ends
Chamber 05 connects, and the oil outlet of oil-pump safety valve is connected with the low pressure oil pocket 06 of lubricating oil pump.When in the high-voltage oil cavity 05 of lubricating oil pump
Oil pressure it is excessive when, the spool 03 of safety valve is pushed to be moved to spring cavity side, spring 02 compresses, the drain path in valve body 01
04 opens, and high-voltage oil cavity is connected with low pressure oil pocket 06, and after machine oil is by safety valve aerial drainage, lubricating oil pump is flowed back to from the outlet of lubricating oil pump
Import.
But since spool 03 is moved to spring cavity side, spring cavity space compression, air and oil pressure in spring cavity
Power increases, and spool 03 is hindered to slide.Existing solution is：Drain pan 011 is symmetrical arranged on the inner wall of valve body 01, in valve
Core 03 makes the oil gas in spring cavity pass through drain pan 011 and flows back in drain path 04 into spring cavity side sliding process.But
The drain pan 011 that the oil-pump safety valve is located above flows back not freely, and high pressure oil is caused to flow to bullet by the drain pan 011 of top
Spring intracavitary makes 03 rear end of spool set up pressure, and spool 03 is hindered to open.
In conclusion how to solve the problems, such as safety valve because end pressure can not be normally-open after spool, become ability
Field technique personnel's urgent problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of safety valve, to ensure that spool is normally-open.
Another of the utility model is designed to provide a kind of lubricating oil pump and engine comprising the safety valve, to ensure
The normal operation of oil hydraulic system.
In order to achieve the above objectives, the utility model provides following technical scheme：
A kind of safety valve, including valve body, spool and elastic component, the valve body is provided with inner cavity and aerial drainage chamber, the spool
It is slideably positioned in the inner cavity, the inner cavity is separated by the spool into oil suction chamber and elastic component accommodating cavity, the elastic component
In the elastic component accommodating cavity, and elastic reaction is distinguished on the spool and the valve body in the both ends of the elastic component；
The spool, which penetrates through to offer on the side spool wall of the elastic component, connects the elastic component accommodating cavity and the aerial drainage
The dredging flow groove of chamber.
Preferably, in above-mentioned safety valve, the spool wall is made of multiple guiding caudal peduncles for axially extending setting,
The dredging flow groove is formed between the two neighboring guiding caudal peduncle.
Preferably, in above-mentioned safety valve, valve wall, institute before side of the spool far from the elastic component is additionally provided with
The port of valve wall is oil inlet before stating, and the oil inlet is connected with the oil suction chamber, offered on the preceding valve wall with it is described into
The drain tap that hydraulic fluid port is connected and connected when safety valve is opened with the draining chamber.
Preferably, in above-mentioned safety valve, the quantity of the drain tap is one or more.
Preferably, it in above-mentioned safety valve, is additionally provided on the inner face of the preceding valve wall from the oil inlet to institute
State the flow-guiding structure of drain tap guiding.
Preferably, in above-mentioned safety valve, the flow-guiding structure is taper surface, and the small end of the taper surface is described in
Oil inlet.
Preferably, in above-mentioned safety valve, the elastic component is spring.
The utility model additionally provides a kind of lubricating oil pump, and including the pump housing and safety valve, high pressure oil is provided on the pump housing
Road and low pressure oil duct, the safety valve are set in the pump housing, and the safety valve is the safety valve described in any of the above item, institute
The oil suction chamber for stating safety valve is connected with the high-pressure oil duct, and the draining chamber of the safety valve is connected with the low pressure oil duct.
Preferably, in above-mentioned lubricating oil pump, the valve body of the safety valve is structure as a whole with the pump housing, the valve body
Inner cavity one end be provided with sealing cover.
The utility model additionally provides a kind of engine, and including lubricating oil pump, the lubricating oil pump is described in any of the above item
Lubricating oil pump.
Compared with prior art, the beneficial effects of the utility model are：
In safety valve provided by the utility model, valve body is provided with inner cavity and aerial drainage chamber, and spool is slideably positioned in inner cavity,
Inner cavity is separated by spool into oil suction chamber and elastic component accommodating cavity, and elastic component is located in elastic component accommodating cavity, and the both ends of elastic component
Elastic reaction is on spool and valve body respectively；Spool penetrates through on the side spool wall of elastic component offers connection elastic component appearance
Put the dredging flow groove of chamber and aerial drainage chamber.Safety valve closes oil suction chamber and draining chamber when not opening, by spool, at this point, elastic component
Accommodating cavity is connected by the dredging flow groove on spool wall with draining chamber.When safety valve is opened, spool is to elastic component accommodating cavity side
It slides, during slip, spool connects oil suction chamber with draining chamber, starts draining, meanwhile, elastic component accommodating cavity passes through always
Dredging flow groove on spool wall is connected with draining chamber, and therefore, gas and machine oil in elastic component accommodating cavity are returned to by drain pan to be let out
In oil pocket, elastic component accommodating cavity will not build pressure, so as to will not hinder spool to elastic component accommodating cavity side move, ensure that
Safety valve it is normally-open.
Lubricating oil pump provided by the utility model and engine employ the safety valve in the application, thus it is guaranteed that machine
The normal system of oil system.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structure diagram of oil-pump safety valve of the prior art；
Fig. 2 is the structure diagram when safety valve that the utility model embodiment provides is closed；
Fig. 3 is structure diagram of the arranged at safety valve that provides of the utility model embodiment when opening；
Fig. 4 is the structure diagram of the spool of safety valve that the utility model embodiment provides；
Fig. 5 is the schematic cross-section of the spool of safety valve that the utility model embodiment provides.
Wherein, 01 it is valve body, 011 be drain pan, 02 be spring, 03 be spool, 04 be drain path, 05 is high pressure oil
Road, 06 are low pressure oil duct；
1 it is sealing cover, 2 be valve body, 21 be elastic component accommodating cavity, 22 be aerial drainage chamber, 23 be oil suction chamber, 3 is elastic component, 4
For high-voltage oil cavity, 5 be spool, 51 be oil inlet, 52 be oil outlet, 53 be flow-guiding structure, 54 be dredging flow groove, 55 be oriented to tail
Handle, 56 are preceding valve wall.
Specific embodiment
There is provided a kind of safety valves for the core of the utility model, ensure that spool is normally-open.
The utility model additionally provides a kind of lubricating oil pump and engine comprising the safety valve, to ensure lubricating oil system just
Often operation.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without making creative work
All other embodiments obtained shall fall within the protection scope of the present invention.
- Fig. 5 is please referred to Fig.2, the utility model embodiment provides a kind of safety valve, including valve body 2, spool 5 and elasticity
Part 3；Wherein, valve body 2 is provided with inner cavity and aerial drainage chamber 22, and inner cavity is connected with aerial drainage chamber 22, and spool 5 is slideably positioned in inner cavity,
The outside wall surface of spool 5 and the internal face sealing of inner cavity are slided, and spool 5 separates inner cavity into oil suction chamber 23 and elastic component accommodating cavity
21, elastic component 3 is located in elastic component accommodating cavity 21, and elastic reaction is distinguished on spool 5 and valve body 2 in the both ends of elastic component 3；Valve
Core 5 penetrates through the dredging flow groove 54 for offering connection elastic component accommodating cavity 21 and aerial drainage chamber 22 on the side spool wall of elastic component 3,
Dredging flow groove 54 penetrates through the inside and outside wall surface of spool wall.
The operation principle and the course of work of the safety valve are as follows：When safety valve is not opened, as shown in Fig. 2, spool blocks
In the oil suction chamber 23 of valve body 2, oil suction chamber 23 and draining chamber 22 are closed by spool 5, at this point, elastic component accommodating cavity 21 passes through spool
Dredging flow groove 54 on wall is connected with draining chamber 22.When 5 forefront pressure of spool is excessive, safety valve is opened, as shown in figure 3, spool 5
To 21 1 Slideslip of elastic component accommodating cavity, during slip, spool 5 is skidded off from oil suction chamber 23, by oil suction chamber 23 and draining
Chamber 22 connects, and starts draining, meanwhile, elastic component accommodating cavity 21 is connected always by the dredging flow groove 54 on spool wall with draining chamber 22
Logical, therefore, gas and machine oil in elastic component accommodating cavity 21 are returned to by drain pan 54 in draining chamber 22 in time, and elastic component houses
Chamber 21 will not build pressure, so as to will not hinder spool 5 to 21 side of elastic component accommodating cavity move, ensure that the normal of safety valve
It opens.
As shown in Figure 4 and Figure 5, spool wall is optimized, in the present embodiment, spool wall is set by multiple axially extend
The guiding caudal peduncle 55 put forms, and is oriented to circumferential directions of the caudal peduncle 55 along spool 5, is formed between two neighboring guiding caudal peduncle 55
Dredging flow groove 54.Spool 5 is slided by being oriented to caudal peduncle 55 in valve body 2, meanwhile, pass through the large area gap being oriented between caudal peduncle 55
Carry out draining.Be oriented to caudal peduncle 55 quantity at least two, can be two, three, four, five or more, be oriented to
Caudal peduncle 55 is uniformly distributed along the circumferencial direction of spool 5.
Certainly, spool wall can also be cylindrical wall, and dredging flow groove 54 is the bar-shaped trough remained silent being opened on cylindrical wall.Or
Dredging flow groove 54 is the multiple discharge orifices being set on cylindrical wall, and discharge orifice is uniformly covered with cylindrical wall, and cylindrical wall forms reticular structure.
The elastic component accommodating cavity 21 of valve body 2 can equally be connected always with aerial drainage chamber 22, as long as elastic component accommodating cavity 21 can be avoided
Build pressure, spool wall are not limited to the structure type cited by the present embodiment.
In the present embodiment, valve wall 56 before side of the spool 5 far from elastic component 3 is additionally provided with, preceding valve wall 56 are open cylinder
Shape structure, the port of preceding valve wall 56 are oil inlet 51, and oil inlet 51 is connected with oil suction chamber 23, are offered on preceding valve wall 56 and oil inlet
The drain taps 52 of 51 connection of mouth.When safety valve is not opened, preceding valve wall 56 is located in oil suction chamber 23, and drain tap 51 is by oil suction chamber 23
Wall surface closing, oil suction chamber 23 do not connect with aerial drainage chamber 22；When safety valve is opened, preceding valve wall 56 is skidded off from oil suction chamber 23,
Drain tap 51 is connected with draining chamber 23, and so that oil suction chamber 23 be connected with aerial drainage chamber 22, the machine oil of oil suction chamber 23 is from oil inlet 51
Into in preceding valve wall 56, then from 52 row of drain tap into aerial drainage chamber 22.
Valve wall 56 before setting, and the effect of setting drain tap 52 and oil inlet 51 is in order to preferably real on preceding valve wall 56
The sealing of existing spool 5 is closed and is opened.Certainly, spool 5 can not also set front valve core 56, the one end of spool 5 far from elastic component 3
For planar ends, it is inserted directly into oil suction chamber 23 and is sealed.
In the present embodiment, the quantity of drain tap 52 is one or more, be specifically as follows one, two, three, four or
Person more, as long as disclosure satisfy that draining requirement.
As shown in Figure 4 and Figure 5, further, in the present embodiment, it is additionally provided on the inner face of preceding valve wall 56 by oil inlet
The flow-guiding structures 53 that mouth 51 is oriented to drain tap 52.Machine oil is made more to be smoothly discharged draining by oil inlet 51 by flow-guiding structure 53
Mouth 52.
As an optimization, the flow-guiding structure 53 in the present embodiment is taper surface, and the small end of taper surface is towards oil inlet 51.Taper
Face can be the arc conical surface, and the inner face of valve wall 56 forms arc-shaped transition before making, and reduce resistance.Certainly, flow-guiding structure 53 may be used also
Think the cambered surface alignment drain tap 52 of unilateral globoidal structure or bilateral globoidal structure, unilateral globoidal structure and bilateral globoidal structure,
Unilateral globoidal structure or bilateral globoidal structure are selected according to the quantity of drain tap 52.
In the present embodiment, elastic component 3 is preferably spring.Certainly, elastic component 3 can also be the elastic portions such as elastic rubber
Part, as long as the elastic reset of spool 5 can be realized.
Based on the described safety valve of any of the above embodiment, the utility model embodiment additionally provides a kind of lubricating oil pump,
Including the pump housing and safety valve, high-pressure oil duct 4 and low pressure oil duct are provided on the pump housing, safety valve is set in the pump housing；Wherein, safety
Valve is the described safety valve of any of the above embodiment, and the oil suction chamber 23 of safety valve is connected with high-pressure oil duct 4, the draining of safety valve
Chamber 22 is connected with low pressure oil duct.When the engine oil pressure in high-pressure oil duct 4 is excessive, machine oil in high-pressure oil duct 4 is by safety valve
Spool 5 is ejected from oil suction chamber 23, and machine oil enters low pressure oil duct through oil suction chamber 23, aerial drainage chamber 22, completes release.
Further, in the present embodiment, the valve body 2 of safety valve is structure as a whole with the pump housing, i.e., is directly set in the pump housing
Inner cavity and aerial drainage chamber 22 are put, spool 5 is fitted into inner cavity, and the outer end of inner cavity is provided with sealing cover 1, is sealed.Certainly, safety
Valve can also be arranged separately in the pump housing.
One kind is additionally provided based on the described safety valve of any of the above embodiment and lubricating oil pump, the utility model embodiment
Engine, including lubricating oil pump, and the lubricating oil pump is the described lubricating oil pump of any of the above embodiment.
The safety valve in the application is employed due to the lubricating oil pump, spool 5 can be normally-open, ensure that entire
The normal operation of lubricating oil system.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide range consistent with features of novelty.
Claims (10)
1. a kind of safety valve, including valve body (2), spool (5) and elastic component (3), the valve body (2) is provided with inner cavity and aerial drainage chamber
(22), the spool (5) is slideably positioned in the inner cavity, the inner cavity separated by the spool (5) into oil suction chamber (23) and
Elastic component accommodating cavity (21), the elastic component (3) is in the elastic component accommodating cavity (21), and the two of the elastic component (3)
End difference elastic reaction is on the spool (5) and the valve body (2)；It is characterized in that, the spool (5) is close to the elasticity
Perforation offers the dredging flow groove for connecting the elastic component accommodating cavity (21) and the aerial drainage chamber (22) on the side spool wall of part (3)
(54)。
2. safety valve according to claim 1, which is characterized in that the spool wall axially extends leading for setting by multiple
It is formed to caudal peduncle (55), the dredging flow groove (54) is formed between the two neighboring guiding caudal peduncle (55).
3. safety valve according to claim 1, which is characterized in that side of the spool (5) far from the elastic component (3)
Valve wall (56) before being additionally provided with, the port of the preceding valve wall (56) is oil inlet (51), the oil inlet (51) and the oil inlet
Chamber (23) connects, and is offered on the preceding valve wall (56) and connects with the oil inlet (51) and let out when safety valve is opened with described
Flow the drain tap (52) that chamber (22) connects.
4. safety valve according to claim 3, which is characterized in that the quantity of the drain tap (52) is one or more.
5. safety valve according to claim 3, which is characterized in that be additionally provided on the inner face of the preceding valve wall (56) by
The flow-guiding structure (53) that the oil inlet (51) is oriented to the drain tap (52).
6. safety valve according to claim 5, which is characterized in that the flow-guiding structure (53) be taper surface, the taper
The small end in face is towards the oil inlet (51).
7. safety valve according to claim 1, which is characterized in that the elastic component (3) is spring.
8. a kind of lubricating oil pump including the pump housing and safety valve, is provided with high-pressure oil duct (4) and low pressure oil duct on the pump housing, described
Safety valve is set in the pump housing, which is characterized in that the safety valve is such as claim 1-7 any one of them safety
Valve, the oil suction chamber (23) of the safety valve are connected with the high-pressure oil duct (4), the aerial drainage chamber (22) of the safety valve with it is described low
Pressure oil road connects.
9. lubricating oil pump according to claim 8, which is characterized in that the valve body (2) of the safety valve is one with the pump housing
Body structure, inner cavity one end of the valve body (2) are provided with sealing cover (1).
10. a kind of engine, including lubricating oil pump, which is characterized in that the lubricating oil pump is machine oil as claimed in claim 8 or 9
Pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141721.XU CN207471104U (en) | 2017-09-07 | 2017-09-07 | A kind of safety valve, lubricating oil pump and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141721.XU CN207471104U (en) | 2017-09-07 | 2017-09-07 | A kind of safety valve, lubricating oil pump and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207471104U true CN207471104U (en) | 2018-06-08 |
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ID=62269070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721141721.XU Active CN207471104U (en) | 2017-09-07 | 2017-09-07 | A kind of safety valve, lubricating oil pump and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207471104U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420729A (en) * | 2017-09-07 | 2017-12-01 | 潍柴动力股份有限公司 | A kind of safety valve, lubricating oil pump and engine |
| CN111059329A (en) * | 2019-12-30 | 2020-04-24 | 自贡市川力科技股份有限公司 | Oil drain valve of oil pump |
-
2017
- 2017-09-07 CN CN201721141721.XU patent/CN207471104U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420729A (en) * | 2017-09-07 | 2017-12-01 | 潍柴动力股份有限公司 | A kind of safety valve, lubricating oil pump and engine |
| CN111059329A (en) * | 2019-12-30 | 2020-04-24 | 自贡市川力科技股份有限公司 | Oil drain valve of oil pump |
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