CN206130228U - Constant voltage control valve - Google Patents
Constant voltage control valve Download PDFInfo
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- CN206130228U CN206130228U CN201621157609.0U CN201621157609U CN206130228U CN 206130228 U CN206130228 U CN 206130228U CN 201621157609 U CN201621157609 U CN 201621157609U CN 206130228 U CN206130228 U CN 206130228U
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- valve
- sliding seat
- constant
- control valve
- pressure control
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Abstract
The utility model provides a constant voltage control valve, including disk seat and the valve gap that is cavity cavity structures, form on the disk seat rather than the communicating main through -hole of inner chamber, form on the valve gap rather than the communicating first through -hole of inner chamber, installation valve ball and sliding seat in valve cover inner cavity, form the fluid passage that link up the sliding seat in the sliding seat, form on the sliding seat lateral wall with the communicating second through -hole of fluid passage, form the fixed seal structure between valve gap and the disk seat, installation second level spring between valve ball and valve gap, installation first order spring between sliding seat and disk seat, and between valve ball and the sliding seat, form contact seal structure between sliding seat and the valve gap respectively. The utility model discloses a valve ball, sliding seat and first order spring, second level spring are mutually supported, can make timely automatic pressure release of constant voltage control valve or pressure boost to realize conveniently that constant voltage control valve advances, the fluid pressure's of exit end difference is in the steady state.
Description
Technical field
This utility model is related to fluid pressure control valve technical field, more particularly, to can in time adjust pressure balanced
A kind of constant-pressure control valve.
Background technology
In the machinery worked by means of Fluid pressure, it usually needs fluid pressure is adjusted in time, to protect
Normal, the efficient operation of card machinery, and extend its service life.For example, in engine timing chain drive system, need
Will be using to timing chain tensioner, this timing chain tensioner is by internal hydraulic pressure power buffer chain transmission process
Vibratory impulse, to reduce drive system in impacting of being subject to of each part, extend the service life of timing driving system, it is ensured that transmission
It is accurate with it is reliable, and reduce drive noise, improve the comfortableness driven.
But, in the engine timing chain drive system course of work, if engine operating condition is mutated, timing chain
Plunger in stretcher by severe impact, will make the high pressure intracavity of timing chain tensioner produce continuous high-pressure, the high pressure pressure
If power cannot discharge in time, great reversed load will be produced to timing chain, guide rail.Because guide rail of the prior art leads to
It is often to adopt made of plastic, its abrasion resistance and heat-resisting quantity are all far below timing chain made by metal, therefore, if started
Machine correct time chain driving system is chronically under this operating mode of big shock loading and works, will make guide rail rubbed out groove or
Rugged surface, so as to the guidance quality for causing guide rail is deteriorated, and then makes vibration aggravation of the timing chain in transmission, causes
The operating mode of engine timing chain drive system is more unstable, and makes the abrasion aggravation of timing chain, guide rail, causes electromotor
The working life of correct time chain driving system is shortened.If timing chain is elongated because of abrasion, it is possible that jumping tooth or disconnected
Risk is split, engine stop is worked or is damaged.
Utility model content
The technical problems to be solved in the utility model is：For the problem that prior art is present, there is provided a kind of Isobarically Control
Valve, when the difference of the Fluid pressure at its import and export end exceedes setting value, can in time carry out releasing pressure automatically or supercharging, so that
The difference of the Fluid pressure at its import and export end is in steady state.
The technical problems to be solved in the utility model employs the following technical solutions to realize：A kind of constant-pressure control valve, including
Be the valve seat and valve gap of hollow cavity structure, the main through hole that communicates with its inner chamber formed on valve seat, formed on valve gap and
The first through hole that its inner chamber is communicated, installs valve ball and sliding seat in valve gap inner chamber, and insertion sliding seat is formed in the sliding seat
Fluid passage, the second through hole communicated with the fluid passage is formed on the wall of sliding seat side；Between the valve gap and valve seat
Fixing seal structure is formed, second level spring is installed between valve ball and valve gap, the first order is installed between sliding seat and valve seat
Formed respectively between spring, and valve ball and sliding seat, between sliding seat and valve gap and contact sealing structure.
Preferably, rigidity of the rigidity of the second level spring less than first order spring.
Preferably, the open gap between the valve ball and sliding seat is set to 0.2mm-0.6mm.
Preferably, flanging sealing is formed on the valve gap bottom, fixation is formed between the flanging sealing and valve seat close
Seal structure.
Preferably, form the first positioning convex in the valve gap inner chamber, first positioning convex and second level spring it
Between form socket join structure.
Preferably, the outer surface of first positioning convex is formed as convex spherical structure.
Preferably, first is formed on the valve gap internal chamber wall and contacts sealing, on the sliding seat outer surface second is formed
Contact sealing, the first contact sealing is contacted with second and formed between sealing face contact sealing structure.
Preferably, the first contact sealing on the valve gap internal chamber wall is cone structure, on the sliding seat outer surface
The second contact sealing be cone structure or spherical structure.
Preferably, the sliding seat top forms the 3rd and contacts sealing, between the 3rd contact sealing and valve ball
Formation face contacts sealing structure.
Preferably, the 3rd contact sealing at the top of the sliding seat is cone structure or concave spherical surface structure.
Compared with prior art, the beneficial effects of the utility model are：When the Fluid pressure at constant-pressure control valve import and export end
Difference when exceeding setting value, cooperated by valve ball, sliding seat and first order spring, second level spring, can both make valve
Sealing state is kept between ball and sliding seat and depressurization state between sliding seat and valve gap, so that constant-pressure control valve enters in time
Row releasing pressure automatically；Depressurization state can also be made between valve ball and sliding seat and sealing shape is kept between sliding seat and valve gap
State, so that constant-pressure control valve carries out in time Automatic-boosting, it is therefore convenient to realize the import and export end of constant-pressure control valve
The difference of Fluid pressure is in steady state.
Description of the drawings
Fig. 1 is the D structure figure of the timing chain tensioner with constant-pressure control valve.
Fig. 2 is the sectional view of the timing chain tensioner with constant-pressure control valve shown in Fig. 1.
Fig. 3 is a kind of D structure figure of constant-pressure control valve of this utility model.
Fig. 4 is a kind of Structure explosion diagram of constant-pressure control valve of this utility model.
Fig. 5 is a kind of sectional view of constant-pressure control valve of this utility model.
Fig. 6 is the sectional view of the valve gap in the constant-pressure control valve shown in Fig. 5.
Fig. 7 is the fundamental diagram (in constant pressure working condition) of the timing chain tensioner with constant-pressure control valve.
Fig. 8 is the fundamental diagram (in pressure release working condition) of the timing chain tensioner with constant-pressure control valve.
Fig. 9 is the fundamental diagram (in supercharging working condition) of the timing chain tensioner with constant-pressure control valve.
Labelling in figure：1- housings, 2- plungers, 3- latches, 4- back-moving springs, 5- stretcher high pressure chests, 6- constant-pressure control valves,
7- stretcher fuel feed holes, 61- valve balls, 62- valve seats, 63- valve gaps, 64- first order springs, 65- sliding seat, 66- second level spring,
The main through holes of 621-, 631- first through hole, the positioning convex of 632- first, the contact sealings of 633- first, 634- flanging sealings,
651- second contacts sealing, the contact sealings of 652- the 3rd, the through holes of 653- second, the positioning convex of 654- second.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with the accompanying drawings and specifically
Embodiment is described in detail to this utility model.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit this utility model.
Constant-pressure control valve as shown in Fig. 3, Fig. 4, Fig. 5, the main valve seat 62 and valve gap for including being hollow cavity structure
63, the main through hole 621 communicated with its inner chamber is formed on valve seat 62, the first through hole communicated with its inner chamber is formed on valve gap 63
631；Preferably, described first through hole 631 can arrange several, and several first through hole 631 are preferably ring valve lid 63
It is uniformly distributed.Valve ball 61 and sliding seat 65 are installed in the inner chamber of valve gap 63, insertion sliding seat 65 is formed in the sliding seat 65
Fluid passage, forms the second through hole 653 communicated with the fluid passage on the side wall of sliding seat 65；Preferably, described second
Through hole 653 can arrange several, and several second through holes 653 are preferably ring sliding seat 65 and are uniformly distributed.The valve gap 63
Fixing seal structure is formed by interference fit between valve seat 62；Preferably, as shown in fig. 6, logical in the bottom of valve gap 63
The flanging sealing 634 that flanging forms integral structure is crossed, is matched somebody with somebody by interference again between the flanging sealing 634 and valve seat 62
Conjunction mode forms fixing seal structure.Second level spring 66 is installed between valve ball 61 and valve gap 63, in sliding seat 65 and valve seat
First order spring 64 is installed between 62.Shape is distinguished between described valve ball 61 and sliding seat 65, between sliding seat 65 and valve gap 63
Into contact sealing structure, that is, when contacting with each other between valve ball 61 and sliding seat 65, valve ball 61 covers the stream in sliding seat 65
Body passage, now, the position that contacts with each other between valve ball 61 and sliding seat 65 forms sealing state, and works as valve ball 61 with activity
When seat 65 is separated from each other, the sealing state between valve ball 61 and sliding seat 65 is released.Similarly, when sliding seat 65 and valve gap 63 it
Between when contacting with each other, the position that contacts with each other between valve gap 63 and sliding seat 65 forms sealing state, and work as valve gap 63 with it is living
When dynamic seat 65 is separated from each other, the sealing state between valve gap 63 and sliding seat 65 is released.
It is new to illustrate this practicality as a example by application by above-mentioned constant-pressure control valve in timing chain tensioner below
The pressure Principles of Regulation of the constant-pressure control valve of type.
Timing chain tensioner as shown in Figure 1 and Figure 2, mainly includes housing 1, plunger 2, back-moving spring 4 and Isobarically Control
Valve 6, described plunger 2 to form oil pressure damping clearance with the inner chamber of housing 1 with merging, generally, the plunger 2 it is cylindrical with housing 1 in
The gap of 0.02mm-0.06mm is set between chamber；Stretcher high pressure chest 5 is formed between the plunger 2 and housing 1, in housing 1
Bottom of chamber portion fixedly mounts constant-pressure control valve 6, and interference fit side is passed through between the valve seat 62 and housing 1 in the constant-pressure control valve 6
Formula forms fixing seal structure, and the main through hole 621 on the constant-pressure control valve 6 is communicated with the stretcher fuel feed hole 7 on housing 1,
First through hole 631 on the constant-pressure control valve 6 is communicated with stretcher high pressure chest 5.The back-moving spring 4 is arranged on Isobarically Control
Between valve 6 and plunger 2.
Described timing chain tensioner is applied in engine timing chain drive system, generally, is installing stretcher
Before, coordinated using latch 3 and housing 1 and eject limiting plunger 2, as shown in Fig. 2 after stretcher is installed in place, pulling out slotting
Pin 3, plunger 2 is ejected under the resilient force of back-moving spring 4 relative to housing 1, and holds out against engine timing chain transmission
Guide rail in system and reach working condition.In the engine timing chain drive system course of work, engine motor oil from
Tight device fuel feed hole 7 enters stretcher, and on plunger 2, the motion of the plunger 2 is reciprocal to the effect of vibration produced by drive system
Motion.
As shown in figure 9, first setting the place end of main through hole 621 as the entrance point of constant-pressure control valve 6, first through hole 631 is set
Place end is the port of export of constant-pressure control valve 6.During engine work, between the valve ball 61 and sliding seat 65,
Formed respectively between sliding seat 65 and valve gap 63 and contact sealing state, now, engine motor oil will not enter from stretcher fuel feed hole 7
Enter stretcher high pressure chest 5, as shown in fig. 7, that is, the difference of the Fluid pressure at the import and export end of the constant-pressure control valve 6 does not surpass
When crossing its setting value, the difference of the Fluid pressure at its import and export end is in steady state.
But, when engine operating condition mutation, when plunger 2 is moved backward relative to housing 1, the volume of stretcher high pressure chest 5
Diminish, and produce malleation, the pressure in stretcher high pressure chest 5 is increased suddenly, the Fluid pressure of the port of export of constant-pressure control valve 6 be more than into
The Fluid pressure at mouth end, when the difference of the Fluid pressure at the import and export end of constant-pressure control valve 6 exceedes its setting value, stretcher is high
Hydraulic oil in pressure chamber 5 by first through hole 631 and will promote valve ball 61 to move down relative to housing 1, then be pushed away by valve ball 61
Dynamic sliding seat 65 simultaneously compresses first order spring 64, and sliding seat 65 moves down and depart from valve gap 63, now, valve relative to housing 1
Sealing state between ball 61 and sliding seat 65 is remained in that, and the sealing state between sliding seat 65 and valve gap 63 is then released,
Therefore, a pressure release passage, stretcher high pressure chest are defined between stretcher high pressure chest 5, first through hole 631, main through hole 621
Machine oil in 5 be able to flow through successively gap between first through hole 631, sliding seat 65 and valve gap 63, the second through hole 653 and enter
Fluid passage in sliding seat 65, then released by main through hole 621, as shown in figure 8, so that the oil in stretcher high pressure chest 5
Drops, until setting value is returned to, to ensure the pressure in stretcher high pressure chest 5 in pressure constant state, now, Isobarically Control
The difference of the Fluid pressure at the import and export end of valve 6 is also at steady state.
When engine operating condition mutation, when plunger 2 travels forward relative to housing 1, the volume of stretcher high pressure chest 5 becomes big,
Pressure drop, when the pressure in stretcher high pressure chest 5 is less than setting value, the Fluid pressure of the port of export of constant-pressure control valve 6 is less than
The Fluid pressure of entrance point, when the difference of the Fluid pressure at the import and export end of constant-pressure control valve 6 exceedes its setting value, electromotor
Machine oil enters stretcher from stretcher fuel feed hole 7, and enters valve gap 63 by main through hole 621, promotes sliding seat 65 relative to shell
Body 1 is moved up, until recover sealing state between sliding seat 65 and valve gap 63, engine motor oil after valve ball 61 is backed down, valve
Ball 61 compresses second level spring 66 and moves up relative to housing 1, makes the sealing state solution between valve ball 61 and sliding seat 65
Remove, therefore, engine motor oil is able to the fluid passage in sliding seat 65 and the gap between valve ball 61 and sliding seat 65
In being flowed into stretcher high pressure chest 5, as shown in figure 9, so that the oil pressure in stretcher high pressure chest 5 is persistently raised, until recovering
To setting value, to ensure the pressure in stretcher high pressure chest 5 in pressure constant state, now, the import and export end of constant-pressure control valve 6
The difference of Fluid pressure be also at steady state.
In the course of work of constant-pressure control valve 6, in order to strengthen the kinetic stability of valve ball 61, and make second level spring 66,
The force value change of first order spring 64 is more steady, and the first positioning convex 632 can be formed in the inner chamber of valve gap 63, it is preferable that
The outer surface of the first described positioning convex 632 is formed as convex spherical structure, as shown in fig. 6, first positioning convex 632 with
Socket join structure is formed between second level spring 66, such that it is able to be efficiently located to second level spring 66, spacing.In addition,
The second positioning convex 654 can be formed in the bottom of sliding seat 65, it is preferable that second positioning convex 654 adopts hollow circuit cylinder
Body structure, forms socket join structure, as shown in Figure 4, Figure 5, with more preferable between second positioning convex 654 and first order spring 64
Ground first order spring 64 is efficiently located, it is spacing.
In order to strengthen the sealing property of constant-pressure control valve 6, the control accuracy of constant-pressure control valve 6 is improved, can be in valve gap 63
First is formed on internal chamber wall and contacts sealing 633, as shown in fig. 6, second is formed on the outer surface of sliding seat 65 contacts sealing
651, and the first contact sealing 633 contacts contact sealing structure in formation face between sealing 651 with second, as shown in Figure 5.It is excellent
Selection of land, the first contact sealing 633 is designed as cone structure, and the second contact sealing 651 is designed as cone structure
Or spherical structure.Similarly, form the 3rd at the top of sliding seat 65 and contact sealing 652, the 3rd contact sealing 652
Face is formed between valve ball 61 and contacts sealing structure.Preferably, it is described 3rd contact sealing 652 be designed as cone structure or
Concave spherical surface structure.In order to further improve the control accuracy of constant-pressure control valve 6, opening between the valve ball 61 and sliding seat 65
Open gap and it is preferably provided as 0.2mm-0.6mm, the rigidity of described second level spring 66 is preferably less than first order spring 64
Rigidity；In addition, after using such structure design, can also well prevent the timing chain tensioner with constant-pressure control valve
Shift to an earlier date pressure release in the course of the work, so that it is guaranteed that the pressure in stretcher high pressure chest 5 is in pressure constant state.
It should be noted that constant-pressure control valve of the present utility model is not limited to apply in timing chain tensioner, its
Also can be suitably used for other needs fluid pressure to carry out the workplace of timely regulation, for example, in fluid line, by arranging
Constant-pressure control valve of the present utility model, the difference that can make the Fluid pressure at the import and export end of the constant-pressure control valve is maintained at constant
State, so as to advantageously ensure that fluid line in flow of fluid at the uniform velocity mobility and discharge stability.
Preferred embodiment of the present utility model is the foregoing is only, not to limit this utility model, should be referred to
Go out, all any modification, equivalent and improvement made within spirit of the present utility model and principle etc. all should be included
Within protection domain of the present utility model.
Claims (10)
1. a kind of constant-pressure control valve, it is characterised in that：Including the valve seat (62) and valve gap (63) that are hollow cavity structure, in valve
The main through hole (621) communicated with its inner chamber is formed on seat (62), the first through hole communicated with its inner chamber is formed on valve gap (63)
(631) valve ball (61) and sliding seat (65), are installed in valve gap (63) inner chamber, on the sliding seat (65) insertion sliding seat is formed
(65) fluid passage, forms the second through hole (653) communicated with the fluid passage on the wall of sliding seat (65) side；The valve
Fixing seal structure is formed between lid (63) and valve seat (62), second level spring is installed between valve ball (61) and valve gap (63)
(66), installation first order spring (64) between sliding seat (65) and valve seat (62), and between valve ball (61) and sliding seat (65),
Formed respectively between sliding seat (65) and valve gap (63) and contact sealing structure.
2. a kind of constant-pressure control valve according to claim 1, it is characterised in that：The rigidity of the second level spring (66) is little
In the rigidity of first order spring (64).
3. a kind of constant-pressure control valve according to claims 1 or 2, it is characterised in that：The valve ball (61) and sliding seat
(65) open gap between is set to 0.2mm-0.6mm.
4. a kind of constant-pressure control valve according to claims 1 or 2, it is characterised in that：Valve gap (63) bottom is formed
Flanging sealing (634), forms fixing seal structure between the flanging sealing (634) and valve seat (62).
5. a kind of constant-pressure control valve according to claims 1 or 2, it is characterised in that：Shape in valve gap (63) inner chamber
Into the first positioning convex (632), between first positioning convex (632) and second level spring (66) socket join structure is formed.
6. a kind of constant-pressure control valve according to claim 5, it is characterised in that：Outside first positioning convex (632)
Surface is formed as convex spherical structure.
7. a kind of constant-pressure control valve according to claims 1 or 2, it is characterised in that：On valve gap (63) internal chamber wall
Form first and contact sealing (633), second is formed on sliding seat (65) outer surface and contacts sealing (651), described the
One contact sealing (633) is contacted with second and formed between sealing (651) face contact sealing structure.
8. a kind of constant-pressure control valve according to claim 7, it is characterised in that：On valve gap (63) internal chamber wall first
Contact sealing (633) is cone structure, and the second contact sealing (651) on sliding seat (65) outer surface is conical surface knot
Structure or spherical structure.
9. a kind of constant-pressure control valve according to claims 1 or 2, it is characterised in that：Sliding seat (65) top shape
Into the 3rd contact sealing (652), form face between the 3rd contact sealing (652) and valve ball (61) and contact sealing knot
Structure.
10. a kind of constant-pressure control valve according to claim 9, it is characterised in that：At the top of the sliding seat (65) the 3rd
Contact sealing (652) is cone structure or concave spherical surface structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157609.0U CN206130228U (en) | 2016-10-31 | 2016-10-31 | Constant voltage control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621157609.0U CN206130228U (en) | 2016-10-31 | 2016-10-31 | Constant voltage control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206130228U true CN206130228U (en) | 2017-04-26 |
Family
ID=58575905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621157609.0U Active CN206130228U (en) | 2016-10-31 | 2016-10-31 | Constant voltage control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206130228U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439142A (en) * | 2016-10-31 | 2017-02-22 | 绵阳富临精工机械股份有限公司 | Constant pressure control valve |
| CN108361171A (en) * | 2018-03-01 | 2018-08-03 | 中国葛洲坝集团易普力股份有限公司 | Emulsion matrix plunger pump |
-
2016
- 2016-10-31 CN CN201621157609.0U patent/CN206130228U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439142A (en) * | 2016-10-31 | 2017-02-22 | 绵阳富临精工机械股份有限公司 | Constant pressure control valve |
| CN108361171A (en) * | 2018-03-01 | 2018-08-03 | 中国葛洲坝集团易普力股份有限公司 | Emulsion matrix plunger pump |
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Address after: 621000 No. 268, Banqiao street, Fucheng District, Mianyang City, Sichuan Province Patentee after: Mianyang Fulin Jinggong Co.,Ltd. Address before: 621000 No. 268, Banqiao street, Fucheng District, Mianyang City, Sichuan Province Patentee before: MIANYANG FULIN PRECISION MACHINING Co.,Ltd. |