CN207421424U - Anti-leak speed limit relief arrangement - Google Patents
Anti-leak speed limit relief arrangement Download PDFInfo
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- CN207421424U CN207421424U CN201721561311.0U CN201721561311U CN207421424U CN 207421424 U CN207421424 U CN 207421424U CN 201721561311 U CN201721561311 U CN 201721561311U CN 207421424 U CN207421424 U CN 207421424U
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- speed limit
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- spool
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Abstract
This anti-leak speed limit relief arrangement is drained the oil valve seat including tubular,Tubular drain the oil valve seat inner wall in the middle part of be equipped with annular interior protuberance and tubular valve seat inside points of draining the oil are divided into exocoel and inner cavity chamber by annular interior protuberance,The present apparatus includes one end and inserts in exocoel indoor drain the oil valve rod and draining the oil the first oilhole for being equipped on valve seat and connecting with exocoel in tubular,The first spring being equipped between the inner end for valve rod of draining the oil and annular interior protuberance,Outer end is equipped in inner cavity chamber can insert in spool of draining the oil in annular interior protuberance,It is equipped at the middle part of inner cavity chamber and is threadedly coupled with inner cavity chamber and inner cavity chamber can be separated into the annular spacer of preceding sub-chamber and rear sub-chamber,The second spring being located in preceding sub-chamber is equipped between the inner end of annular spacer and spool of draining the oil,Reaming and the second oilhole for being connected with the reaming are equipped in the drain the oil inner end inner wall of valve seat of tubular,Damping hole is equipped in the axial centre of damping spool,The 3rd spring is equipped between annular spacer and damping spool.
Description
Technical field
The utility model belongs to valve technology field more particularly to a kind of anti-leak speed limit relief arrangement.
Background technology
Unloading valve its can be by discharge degree.Such as applied in field of tool.Instrument includes automotive tools etc..
The structure of unloading valve includes valve pocket and the spool that is arranged in valve pocket, and the open-top unidirectional valve ball of spool is so as to fulfill unloading
Lotus, unidirectional valve ball pass through a spring reset.
Above-mentioned this unloading valve, although disclosure satisfy that requirement to a certain extent, this valve lacks
Be trapped in：
1st, when the pressure of oil circuit is relatively low, leakproofness is poor between unidirectional valve ball and the inner wall of valve pocket at this time, causes to deposit
It is leaking, using there are security risks.
2nd, the way of contact between valve ball and the inner wall of valve pocket contacts for line, and leakproofness is poor.
3rd, the speed limit poor-performing of existing unloading valve.
In order to solve the technical issues of above-mentioned, for example, Chinese patent literature discloses a kind of unloading valve [application number：
200720027357.4], it includes valve body, the top connection upper cover of valve body, lower part connection exhaust body；It is internally provided in upper cover flat
Weigh piston and balancing spring, and upper spring seat and lower spring cup are equipped with above and below balancing spring, is set above upper spring seat
There is adjusting screw, adjusting screw is stretched out outside upper cover, is equipped on the outside of dummy pistonType sealing ring, in the lower part of dummy piston
Equipped with needle-valve, minor valve is connected on needle-valve, return spring is equipped in the outside of needle-valve, aperture is internally provided in needle-valve；In valve
The middle lower portion of body is equipped with the piston that discharges water, and spring is equipped on the outside of the piston that discharges water, spring lower part is connected with spring base, the two of valve body
Side is equipped with air inlet and gas outlet, is equipped with check valve in gas outlet, gas outlet is communicated by passage with the first cavity, in the work that discharges water
Side is equipped with the second cavity beyond the Great Wall.The program has the advantages of rational in infrastructure, range of pressure fluctuations is small, and pressure adjusting is stablized.
Although above-mentioned scheme has many advantages, such as above, above-mentioned scheme is not improved above-mentioned technology and is asked
Therefore topic, is badly in need of designing a plunger pump that can solve above-mentioned technical problem
Utility model content
The purpose of this utility model is in view of the above-mentioned problems, providing a kind of anti-leak and safer, speed limit performance is better
Anti-leak speed limit relief arrangement.
In order to achieve the above objectives, the utility model employs following technical proposal：This anti-leak speed limit relief arrangement includes
Tubular is drained the oil valve seat, tubular drain the oil valve seat inner wall in the middle part of be equipped with annular interior protuberance and annular interior protuberance drains the oil tubular valve seat
Inside is separated into exocoel and inner cavity chamber, and the internal diameter of annular interior protuberance is less than tubular and drains the oil the internal diameter of valve seat, and the present apparatus includes one
End inserts in exocoel indoor drain the oil and valve rod and drains the oil the first oilhole for being equipped on valve seat and being connected with exocoel in tubular, in fuel outlet valve
It is equipped between the inner end of bar and annular interior protuberance and is located at indoor first spring of exocoel, outer end is equipped in inner cavity chamber to be inserted in
Spool of draining the oil in annular interior protuberance is equipped at the middle part of inner cavity chamber and is threadedly coupled and can be separated into inner cavity chamber with inner cavity chamber
Preceding sub-chamber and the annular spacer of rear sub-chamber are equipped between the inner end of annular spacer and spool of draining the oil and are located at preceding sub- chamber
Indoor second spring and surface seal structure is equipped between spool and the rear end of annular interior protuberance draining the oil, drained the oil valve seat in tubular
Inner end inner wall be equipped with reaming and the second oilhole for connect with the reaming, being equipped in reaming can be along the axial shifting of reaming
Dynamic damps spool and filtration is equipped at the aperture of reaming, is equipped with damping hole in the axial centre of damping spool and works as
Oil from filtration enter in rear sub-chamber when described in damping spool the second oilhole is closed, in annular spacer and damping
The 3rd spring is equipped between spool.
The effect of second spring and the 3rd spring may insure the elastic force of each spring, avoid due to length
It is longer to cause the problem of elastic force is inadequate or elasticity is poor.
The effect of second spring is cooperateed with by surface seal structure, may insure the leakproofness in low-pressure.
The damping spool combination damping hole of design, can improve speed limit performance.
In above-mentioned anti-leak speed limit relief arrangement, the surface seal structure includes being arranged on fuel outlet valve in-core end
Annular protrusion is equipped with first annular face in the inside of annular interior protuberance, has and first ring in the outer end of annular protrusion
The second mutually identical annular surface of shape face.
In above-mentioned anti-leak speed limit relief arrangement, Gask-O-Seal is equipped on the inside of the annular protrusion, it is described
It is annular inner conical surface that first annular face, which is arranged on Gask-O-Seal away from one end of annular protrusion and the first annular face, described
Second annular surface is the taper surface coincideing with the annular inner conical surface.
In above-mentioned anti-leak speed limit relief arrangement, the internal diameter of the Gask-O-Seal is more than the interior of annular interior protuberance
Footpath.
In above-mentioned anti-leak speed limit relief arrangement, the damping spool outer end is equipped with Blind locating holes, and described the
Three spring inner ends insert in Blind locating holes and act on the bottom of Blind locating holes.
In above-mentioned anti-leak speed limit relief arrangement, the damping hole axial line and the Blind locating holes axle center
Line overlaps.
In above-mentioned anti-leak speed limit relief arrangement, the filtration includes filter screen, is set in the reaming
It is useful for preventing the axial positioning structure that the filter screen moves axially.
In above-mentioned anti-leak speed limit relief arrangement, it is arranged on the valve rod of draining the oil and connects with exocoel inner wall sealing
The movable sealing structure connect.
In above-mentioned anti-leak speed limit relief arrangement, the exocoel internal diameter is more than the internal diameter of inner cavity chamber.
In above-mentioned anti-leak speed limit relief arrangement, the tubular drains the oil valve seat inner end outer wall equipped with external screw thread.
Compared with prior art, it is the advantages of this anti-leak speed limit relief arrangement：
1st, the effect of second spring is cooperateed with by surface seal structure, may insure the leakproofness in low-pressure.
The effect of second spring and the 3rd spring may insure the elastic force of each spring, avoid due to length
It is longer to cause the problem of elastic force is inadequate or elasticity is poor.
2nd, the damping spool combination damping hole of design, can improve speed limit performance..
3rd, it is simple in structure and easily fabricated.
Description of the drawings
Fig. 1 is structure diagram provided by the utility model.
Fig. 2 is configuration schematic diagram provided by the utility model.
Fig. 3 is enlarged structure schematic diagram at A in Fig. 1.
Fig. 4 is damping valve core structure schematic diagram provided by the utility model.
Fig. 5 is installation condition schematic diagram provided by the utility model.
In figure, tubular is drained the oil valve seat 1, annular interior protuberance 11, the first oilhole 12, the first spring 13, reaming 14, the second oilhole
15th, external screw thread 16, limited step 17, the first sealing ring 18, the second sealing ring 19, valve rod 2 of draining the oil, taper platform 21, sealing circle body
22nd, drain the oil spool 3, annular spacer 4, second spring 5, surface seal structure 6, annular protrusion 61, first annular face 62, the second ring
Shape face 63, Gask-O-Seal 64, damping spool 7, damping hole 71, the first hole 711, taper hole body 712, the second hole the 713, the 3rd
Spring 8, filter screen 9, baffle ring 91.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Figs. 1-2, this anti-leak speed limit relief arrangement is drained the oil valve seat 1 including tubular, is drained the oil 1 inner end of valve seat in tubular
Outer wall is equipped with external screw thread 16.
Secondly, it is equipped with limited step 17 at the tubular middle part of valve seat 1 of draining the oil, limited step can avoid tubular from draining the oil valve seat 1
Excessively installation.
In addition, it is arranged with the first sealing ring 18 in limited step 17 at the tubular middle part of valve seat 1 of draining the oil.Limited step
Limiting slot is formed between 17 and the outer end of external screw thread 16, the first sealing ring 18 is located in limiting slot.
By above-mentioned structure design, installation effectiveness can be improved, at the same time it can also further improve installation after connect
The leakproofness at place.
Annular positioning groove is equipped on the outer end outer wall for draining the oil valve seat 1 in tubular and is arranged in annular positioning groove second is close
Seal 19.
Tubular drain the oil valve seat 1 inner wall in the middle part of be equipped with annular interior protuberance 11 and annular interior protuberance 11 drains the oil tubular valve seat
It is separated into exocoel and inner cavity chamber inside 1, the internal diameter of annular interior protuberance 11 is less than tubular and drains the oil the internal diameter of valve seat 1.
Exocoel internal diameter is more than the internal diameter of inner cavity chamber.
The inside of annular interior protuberance 11 has annular inclined-plane, has outer ring inclined-plane in the outside of annular interior protuberance 11,
And the annular inclined-plane and outer ring inclined-plane are symmetrical arranged.By setting outer ring inclined-plane, can improve into fuel-displaced effect
Rate, i.e. play the role of water conservancy diversion.
The present apparatus inserts in the exocoel indoor valve rod 2 and draining the oil in tubular of draining the oil including one end and is equipped on valve seat 1 and exocoel
First oilhole 12 of connection, the first oilhole 12 has several and even circumferential is distributed.In the inner end for valve rod 2 of draining the oil and annular convex
It is equipped between portion 11 and is located at indoor first spring 13 of exocoel.
Secondly, in the inner end for valve rod 2 of draining the oil equipped with taper platform 21 and the axial line for valve rod 2 of draining the oil and the axial line of taper platform
It overlaps.By setting taper platform, being inserted in order to the first spring 13, meanwhile, when which can also reduce mobile
Resistance.
In addition, in the movable sealing structure that is arranged on valve rod 2 and is connected with exocoel inner wall sealing of draining the oil.Movable sealing structure bag
Include the sealing circle body 22 for being arranged on the sealing ring locating slot at 2 middle part of valve rod of draining the oil and being arranged in sealing ring locating slot.
Outer end is equipped in inner cavity chamber can insert in spool 3 of draining the oil in annular interior protuberance 11, and be set in the middle part of inner cavity chamber
There is the annular spacer 4 for being threadedly coupled with inner cavity chamber and inner cavity chamber being separated into preceding sub-chamber and rear sub-chamber, i.e. annular
The inside of separator 4 has through hole, can connect preceding sub-chamber with rear sub-chamber.
The inner end of annular spacer 4 is equipped with well.
The second spring 5 being located in preceding sub-chamber is equipped between the inner end of annular spacer 4 and spool 3 of draining the oil and is being put
Surface seal structure 6 is equipped between the rear end of fuel tap core 3 and annular interior protuberance 11.
As shown in figs. 1 and 3, specifically, surface seal structure 6 here includes being arranged on the convex annular for 3 inner end of spool of draining the oil
Portion 61 is equipped with first annular face 62 in the inside of annular interior protuberance 11, has and described first in the outer end of annular protrusion 61
The second mutually identical annular surface 63 of annular surface 62.
Gask-O-Seal 64 is equipped in 61 inside of annular protrusion, the first annular face 62 is arranged on Gask-O-Seal 64
One end and the first annular face 62 away from annular protrusion 61 are annular inner conical surface, second annular surface 63 be with it is described
The taper surface that annular inner conical surface coincide.
The outer end of Gask-O-Seal 64 has the cooperation inclined-plane coincideing with the annular inclined-plane, passes through setting for inclined-plane
Meter, may insure to be installed in place, at the same time it can also expand contact area, it is ensured that the structural stability after assembling.
The internal diameter of Gask-O-Seal 64 is more than the internal diameter of annular interior protuberance 11.
It is sealed by contact of the face with face, sealing effect can be improved, by the design of two springs, may insure
The elastic force of second spring 5 when pressure is low, design is more reasonable and avoids leakage.
Reaming 14 and the second oilhole 15 for being connected with the reaming are equipped in the drain the oil inner end inner wall of valve seat 1 of tubular,
Filtration can be equipped with along the damping spool 7 that reaming 14 moves axially and at the aperture of reaming 14 by being equipped in reaming 14,
Specifically, which includes filter screen 9, is equipped with what is moved axially for preventing the filter screen 9 in the reaming
Axial positioning structure.
Axial positioning structure includes being arranged on the baffle ring 91 in reaming and outside 9 both ends of the surface of filter screen.The filtering of setting
Structure may insure to enter to the oil quality in device, meanwhile, which also plays an important role of to stop, can be to avoid
Spool 7 is damped to reaming aperture to depart from.
Damping hole 71 is equipped in the axial centre of damping spool 7 and when after oil is entered to from filtration in sub-chamber
The damping spool 7 closes the second oilhole 15, and the 3rd spring 8 is equipped between annular spacer 4 and damping spool 7.
Further, Blind locating holes 72 are equipped in 7 outer end of damping spool, 8 inner end of the 3rd spring inserts in positioning blind
In hole 72 and act on the bottom of Blind locating holes 72.
Secondly, 71 axial line of damping hole is overlapped with 72 axial line of Blind locating holes.
As shown in figure 4, damping hole 71 includes the first hole connected with Blind locating holes 72, the cone connected with the first hole 711
Shape hole body 712 and the second hole 713 connected with taper hole body, the internal diameter in the first hole are more than the internal diameter in the second hole.
As shown in Figs. 1-5
There are two types of states for the present embodiment
The first is light condition；Second is load condition.
When empty, valve rod 2 of draining the oil at this time, which moves inward to cancel, drains the oil between spool 3 and annular interior protuberance 11
Sealing, and oil at this time is entered to from 71 and/or second oilhole 15 of damping hole in rear sub-chamber, realizes quick relief.
When load condition, with the continuous increase of pressure, damping spool 7 closes the second oilhole 15, then oil passes through ring
Shape separator 4 and annular interior protuberance 11, and discharged from the first oilhole 12.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (10)
- It 1. a kind of anti-leak speed limit relief arrangement, drains the oil valve seat (1) including tubular, which is characterized in that drain the oil valve seat (1) in tubular Inner wall in the middle part of be equipped with annular interior protuberance (11) and tubular is drained the oil and is separated into exocoel inside valve seat (1) by annular interior protuberance (11) And inner cavity chamber, the internal diameter of annular interior protuberance (11) are less than tubular and drain the oil the internal diameter of valve seat (1), the present apparatus inserts in exocoel including one end It indoor valve rod of draining the oil (2) and drains the oil the first oilhole (12) for being equipped on valve seat (1) and being connected with exocoel in tubular, in fuel outlet valve It is equipped between the inner end of bar (2) and annular interior protuberance (11) and is located at indoor first spring (13) of exocoel, be equipped in inner cavity chamber Outer end can insert in the spool of draining the oil (3) in annular interior protuberance (11), be equipped at the middle part of inner cavity chamber and be threadedly coupled with inner cavity chamber And inner cavity chamber can be separated into the annular spacer (4) of preceding sub-chamber and rear sub-chamber, in annular spacer (4) and fuel outlet valve Equipped with the second spring (5) being located in preceding sub-chamber and in spool of draining the oil (3) and annular interior protuberance (11) between the inner end of core (3) Rear end between be equipped with surface seal structure (6), tubular drain the oil valve seat (1) inner end inner wall be equipped with reaming (14) and with it is described The second oilhole (15) of reaming connection is equipped with the damping spool (7) that can be moved axially along reaming (14) in reaming (14) And filtration is equipped at the aperture of reaming (14), damping hole (71) is equipped in the axial centre of damping spool (7) and is worked as Oil from filtration enter in rear sub-chamber when described in damping spool (7) by the second oilhole (15) close, in annular and separation The 3rd spring (8) is equipped between part (4) and damping spool (7).
- 2. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that surface seal structure (6) bag The annular protrusion (61) for being arranged on spool of draining the oil (3) inner end is included, first annular face is equipped in the inside of annular interior protuberance (11) (62), there is second annular surface (63) mutually identical with the first annular face (62) in the outer end of annular protrusion (61).
- 3. anti-leak speed limit relief arrangement according to claim 2, which is characterized in that on the inside of the annular protrusion (61) Equipped with Gask-O-Seal (64), the first annular face (62) is arranged on the separate annular protrusion (61) of Gask-O-Seal (64) One end and the first annular face (62) are annular inner conical surface, and second annular surface (63) is to be kissed with the annular inner conical surface The taper surface of conjunction.
- 4. anti-leak speed limit relief arrangement according to claim 3, which is characterized in that the Gask-O-Seal (64) Internal diameter is more than the internal diameter of annular interior protuberance (11).
- 5. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that described damping spool (7) outer end Equipped with Blind locating holes (72), the 3rd described spring (8) inner end inserts in Blind locating holes (72) and acts on Blind locating holes (72) Bottom.
- 6. anti-leak speed limit relief arrangement according to claim 5, which is characterized in that described damping hole (71) axle center Line is overlapped with described Blind locating holes (72) axial line.
- 7. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that the filtration includes filtering Net (9), the interior axial positioning structure for being equipped with to prevent that the filter screen (9) from moving axially of the reaming.
- 8. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that covered on the valve rod of draining the oil (2) Equipped with the movable sealing structure being connected with exocoel inner wall sealing.
- 9. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that the exocoel internal diameter is more than interior The internal diameter of chamber.
- 10. anti-leak speed limit relief arrangement according to claim 1, which is characterized in that the tubular is drained the oil valve seat (1) Inner end outer wall is equipped with external screw thread (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721561311.0U CN207421424U (en) | 2017-11-21 | 2017-11-21 | Anti-leak speed limit relief arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721561311.0U CN207421424U (en) | 2017-11-21 | 2017-11-21 | Anti-leak speed limit relief arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207421424U true CN207421424U (en) | 2018-05-29 |
Family
ID=62303723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721561311.0U Active CN207421424U (en) | 2017-11-21 | 2017-11-21 | Anti-leak speed limit relief arrangement |
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| Country | Link |
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| CN (1) | CN207421424U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906236A (en) * | 2017-11-21 | 2018-04-13 | 嘉善海力达工具有限公司 | Anti-leak speed limit relief arrangement |
| CN112032546A (en) * | 2020-09-09 | 2020-12-04 | 余姚市展欣汽车部件有限公司 | Pull ring type water drain valve |
-
2017
- 2017-11-21 CN CN201721561311.0U patent/CN207421424U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107906236A (en) * | 2017-11-21 | 2018-04-13 | 嘉善海力达工具有限公司 | Anti-leak speed limit relief arrangement |
| CN112032546A (en) * | 2020-09-09 | 2020-12-04 | 余姚市展欣汽车部件有限公司 | Pull ring type water drain valve |
| CN112032546B (en) * | 2020-09-09 | 2022-05-13 | 余姚市展欣汽车部件有限公司 | Pull ring type water drain valve |
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