CN206694341U - A kind of break-in tool oil path high-pressure pressure-relief valve structure - Google Patents
A kind of break-in tool oil path high-pressure pressure-relief valve structure Download PDFInfo
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- CN206694341U CN206694341U CN201621488274.0U CN201621488274U CN206694341U CN 206694341 U CN206694341 U CN 206694341U CN 201621488274 U CN201621488274 U CN 201621488274U CN 206694341 U CN206694341 U CN 206694341U
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- pressure
- oil
- groove
- steel ball
- oil duct
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Abstract
It the utility model is related to a kind of break-in tool oil path high-pressure pressure-relief valve structure, a pressure release oil duct in parallel is made on low pressure oil duct before low pressure check valve import, the pressure release oil duct connects the oil inlet made on a pressure release valve body, the high voltage control mouth that the valve body end face is set connects the high voltage control oil duct, the high voltage control mouth is made sliding groove, valve rod groove, steel-ball groove and steel ball bar groove, valve rod groove to the extension of the valve body other end and connected with oil inlet.In the utility model, after oil inlet connects with oil return opening, the low-pressure hydraulic oil of low pressure oil duct is set to be returned directly in fuel tank, accident caused by the pressure constantly increase of mixing oil duct is avoided, and valve body overall volume is small, directly can engage in pump plate, reduce volume, meanwhile the sealing effectiveness of steel ball is better than cone valve structure, good sealing effect.
Description
Technical field
The utility model belongs to break-in tool pressure release technical field, especially a kind of break-in tool oil path high-pressure relief valve knot
Structure.
Background technology
Rescue tool has all size, model, but its power source is hydraulic way, and common structure is：Including oil
Case, oil pump and pipeline, fuel tank connect oil pump by pipeline, and the hydraulic oil pumped out is passed through the oil duct, the valve that are set in pump plate by oil pump
Oil cylinder on body and instrument completes the driving of instrument, such as：In a kind of high pressure, the structure of low pressure joint fuel feeding, the He of high-pressure pump 27
Low-lift pump 17 pumps out hydraulic oil from fuel tank 16 respectively, then carries out high-pressure and hydraulic by high-pressure oil duct 25, high pressure check valve 23
The supply of oil, then the supply by low pressure oil duct 19, the progress low-pressure hydraulic oil of low pressure check valve 24, two kinds of fluid pass through miscella
Road 26 is transported in instrument, in order to avoid the oil pressure in mixing oil duct is too high, so mixing oil duct list draws high voltage control oil
Road 28, in the prior art, it is too high to avoid mixing the oil pressure in oil duct commonly using overflow valve, is specifically gone here and there on low pressure oil duct
Join overflow valve, but because overflow valve cost is higher, and volume is larger, it is necessary to be provided separately within outside pump plate, adds whole
The volume of body, producer develops the overflow valve of cone valve structure, but this overflow valve uses cone-shaped seal structure, and sealing structure is not
It is good, influence to keep stable pressure during hydraulic oil conveying.
Utility model content
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided simple in construction, can be embedded in pump plate and just
In a kind of break-in tool oil path high-pressure pressure-relief valve structure used.
The utility model adopts the technical scheme that：
A kind of break-in tool oil path high-pressure pressure-relief valve structure, including high-pressure oil duct and low pressure oil duct, high-pressure oil duct and low pressure
The mixing oil duct of oil duct end connection one, makes a high voltage control oil duct in parallel on mixing oil duct, connects one on low pressure oil duct
Low pressure check valve, it is characterised in that：A pressure release oil duct in parallel, the pressure release are made on low pressure oil duct before low pressure check valve import
Oil duct connects the oil inlet made on a pressure release valve body, and the high voltage control mouth that the valve body end face is set connects the high voltage control
Oil duct, the high voltage control mouth make sliding groove, valve rod groove, steel-ball groove and steel ball bar groove to the extension of the valve body other end, valve rod groove with
Oil inlet connects, and steel-ball groove connects with the oil return opening made on valve body, oil return opening connection fuel tank, is slided in sliding groove interior sealing
An ejection block is embedded in, the integrally formed valve rod of ejection block is located in valve rod groove, end face of the valve rod groove away from high voltage control mouth
It is crimped on the spherome surface in steel ball insertion valve rod groove, the steel ball bar outer rim pocketed springs of setting-in, the steel ball in steel ball bar groove
Bar makes the depression of a setting-in steel ball close to the end of steel ball, and the spring is used to push steel ball bar and by steel ball jam-packed in steel ball
The interface that groove and valve rod groove connect；
The high pressure liquid force feed that the high voltage control mouth enters can promote steel ball, steel ball bar to valve body other end by valve rod
Move simultaneously compression spring and oil inlet is connected with oil return opening by valve rod groove, steel-ball groove.
Moreover, a seal groove is made in the valve body other end, the seal groove connects with steel ball bar groove, pacifies in seal groove
End screw plug is filled, the end face that the screw plug is located in seal groove is withstood one end of spring and set with the end surfaces of the steel ball bar
Put.
Moreover, the oil inlet and oil return opening are radially arranged in valve body and the both ends of the two are symmetricly set on
The both sides of valve body surface, are installed into that whelk is stifled and oil return in the side opening of oil inlet and the side opening of oil return opening respectively
Screw plug.
Moreover, the interior setting-in guard circle of groove and O-ring that the ejection block outer rim is made, the two is used to avoid high voltage control
The high pressure liquid force feed of mouth enters valve rod groove.
The advantages of the utility model and good effect are：
For the utility model in nominal situation, low-pressure hydraulic oil and high pressure liquid force feed are transported to instrument by mixing oil duct
In, the high-pressure and hydraulic shortage of oil of high voltage control mouth to overcome the elastic force of spring, so steel ball under the action of the spring jam-packed in steel
The interface of ball groove and valve rod groove, oil inlet and oil return opening is set to be in the state of cut-off, the pressure at mixing oil duct is more than
During 14mPa, the pressure at high voltage control mouth is more than the elastic force of spring, and ejection block promotes valve rod to steel-ball groove in the presence of pressure difference
Motion, and steel ball is pushed open from steel-ball groove and valve rod groove interface, now because the pressure difference at low pressure check valve both ends is excessive, low pressure
The fuel feeding of oil duct enters in valve body from oil inlet, and by being returned to after valve rod groove, steel-ball groove, oil return opening in fuel tank, makes miscella
The pressure in road will not continue to increase and cause the generation of accident, and valve body overall volume is small, can directly engage installed in pump plate
It is interior, volume is reduced, meanwhile, the sealing effectiveness of steel ball is better than cone valve structure, good sealing effect.
Brief description of the drawings
Fig. 1 is sectional view of the utility model when mixing gallery pressure is normal；
Fig. 2 is sectional views of the Fig. 1 when mixing gallery pressure is excessive.
Embodiment
With reference to embodiment, following embodiments, which are illustrative, are not limited is further illustrated to the utility model
, it is impossible to limit the scope of protection of the utility model with following embodiments.
A kind of break-in tool oil path high-pressure pressure-relief valve structure, as shown in Fig. 1~2, including pump plate, height is provided with pump plate
Road 25 and low pressure oil duct 19 are pressed oil, high-pressure oil duct connects a mixing oil duct 26 with low pressure oil duct end, made on mixing oil duct
One high voltage control oil duct 28 in parallel, a low pressure check valve 24 of connecting on low pressure oil duct, innovation of the present utility model are：Low pressure
A pressure release oil duct 20 in parallel is made on low pressure oil duct 22 before check valve inlet, the pressure release oil duct connects a pressure release valve body 1
On the oil inlet 18 made, the high voltage control mouth 15 that the valve body end face 14 is set connects the high voltage control oil duct, and the height is voltage-controlled
Donsole makes sliding groove 12, valve rod groove 9, steel-ball groove 31 and steel ball bar groove 5 to the extension of the valve body other end, and valve rod groove connects with oil inlet
Logical, steel-ball groove connects with the oil return opening made on valve body, oil return opening connection fuel tank 16, setting-in one is slided in sliding groove interior sealing
Ejection block 13, the integrally formed valve rod 11 of the ejection block are located in valve rod groove, end face pressure of the valve rod groove away from high voltage control mouth
It is connected on the spherome surface that steel ball 8 is embedded in valve rod groove, the outer rim pocketed springs 3 of steel ball bar 4 of setting-in, the steel ball in steel ball bar groove
Bar makes the depression 7 of a setting-in steel ball close to the end of steel ball, and the spring is used to push steel ball bar and by steel ball jam-packed in steel
At the interface 30 that ball groove and valve rod groove connect；
The high pressure liquid force feed that the high voltage control mouth enters can promote steel ball, steel ball bar to valve body other end by valve rod
Move simultaneously compression spring and oil inlet is connected with oil return opening by valve rod groove, steel-ball groove.
In the present embodiment, a seal groove is made in the valve body other end, and the seal groove connects with steel ball bar groove, is sealing
Mounting end screw plug 2 in groove, the end face that the screw plug is located in seal groove withstand one end of spring and with the end face of the steel ball bar
It is arranged at intervals.
The oil inlet and oil return opening are radially arranged in valve body and the both ends of the two are symmetricly set on valve body
The both sides on surface, whelk stifled 10 and oil return spiral shell are installed into respectively in the side opening of oil inlet and the side opening of oil return opening
Stifled 6.
Setting-in guard circle and O-ring 29 in the made groove of the ejection block outer rim, the two is used to avoid high voltage control mouth
High pressure liquid force feed enter valve rod groove.
When the utility model uses：
It is high as shown in figure 1, low-pressure hydraulic oil and high pressure liquid force feed are transported in instrument by mixing oil duct during nominal situation
The high-pressure and hydraulic shortage of oil of voltage-controlled donsole to overcome the elastic force of spring, so steel ball under the action of the spring jam-packed in steel-ball groove and
The interface of valve rod groove, oil inlet and oil return opening is set to be in the state of cut-off, instrument can pass through high-pressure oil duct and low pressure oil duct
Substantial amounts of hydraulic oil is quickly obtained, open or close action when completing just to start.
When pressure at mixing oil duct is more than 14mPa, as shown in Fig. 2 the pressure at high voltage control mouth is more than spring
Elastic force, ejection block promote valve rod to be moved to steel-ball groove in the presence of pressure difference, and by steel ball from steel-ball groove and valve rod groove interface
Push open, now because the pressure difference at low pressure check valve both ends is excessive, the fuel feeding of low pressure oil duct enters in valve body from oil inlet, and passes through
(white arrow direction in Fig. 2) is returned in fuel tank after valve rod groove, steel-ball groove, oil return opening.
After oil inlet connects with oil return opening, the low-pressure hydraulic oil of low pressure oil duct is returned directly in fuel tank, avoid mixing
Accident caused by the constantly increase of the pressure of oil duct, and valve body overall volume is small, directly can engage in pump plate, reduces
Volume, meanwhile, the sealing effectiveness of steel ball is better than cone valve structure, good sealing effect.
Claims (4)
1. a kind of break-in tool oil path high-pressure pressure-relief valve structure, including high-pressure oil duct and low pressure oil duct, high-pressure oil duct and low pressure oil
The mixing oil duct of road end connection one, makes a high voltage control oil duct in parallel, series connection one is low on low pressure oil duct on mixing oil duct
Press check valve, it is characterised in that：A pressure release oil duct in parallel, pressure release oil are made on low pressure oil duct before low pressure check valve import
Road connects the oil inlet made on a pressure release valve body, and the high voltage control mouth that the valve body end face is set connects the high voltage control oil
Road, the high voltage control mouth make sliding groove, valve rod groove, steel-ball groove and steel ball bar groove to the extension of the valve body other end, and valve rod groove is with entering
Hydraulic fluid port connects, and steel-ball groove connects with the oil return opening made on valve body, oil return opening connection fuel tank, is slided in sliding groove interior sealing embedding
An ejection block is filled, the integrally formed valve rod of ejection block is located in valve rod groove, end face pressure of the valve rod groove away from high voltage control mouth
It is connected on the spherome surface in steel ball insertion valve rod groove, the steel ball bar outer rim pocketed springs of setting-in, the steel ball bar in steel ball bar groove
The depression of a setting-in steel ball is made close to the end of steel ball, the spring is used to push steel ball bar and by steel ball jam-packed in steel-ball groove
The interface to connect with valve rod groove；
The high pressure liquid force feed that the high voltage control mouth enters can promote steel ball, steel ball bar to be moved to valve body other end by valve rod
And compression spring and oil inlet is set to be connected with oil return opening by valve rod groove, steel-ball groove.
A kind of 2. break-in tool oil path high-pressure pressure-relief valve structure according to claim 1, it is characterised in that：The valve body is another
End face makes a seal groove, and the seal groove connects with steel ball bar groove, the mounting end screw plug in seal groove, and the screw plug is positioned at close
Withstand one end of spring and set with the end surfaces of the steel ball bar in end face in sealing groove.
A kind of 3. break-in tool oil path high-pressure pressure-relief valve structure according to claim 2, it is characterised in that：The oil inlet
In the valve body and both ends of the two are radially arranged on oil return opening and are symmetricly set on the both sides of valve body surface, in oil inlet
Side opening and the side opening of oil return opening be installed into that whelk is stifled and oil return screw plug respectively.
A kind of 4. break-in tool oil path high-pressure pressure-relief valve structure according to claim 3, it is characterised in that：The ejection block
Setting-in guard circle and O-ring in the made groove of outer rim, the two is used to avoid the high pressure liquid force feed of high voltage control mouth to enter valve rod
Groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488274.0U CN206694341U (en) | 2016-12-30 | 2016-12-30 | A kind of break-in tool oil path high-pressure pressure-relief valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621488274.0U CN206694341U (en) | 2016-12-30 | 2016-12-30 | A kind of break-in tool oil path high-pressure pressure-relief valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694341U true CN206694341U (en) | 2017-12-01 |
Family
ID=60439242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621488274.0U Expired - Fee Related CN206694341U (en) | 2016-12-30 | 2016-12-30 | A kind of break-in tool oil path high-pressure pressure-relief valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694341U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519554A (en) * | 2018-12-12 | 2019-03-26 | 李军 | A kind of super-pressure relief valve |
| CN111120701A (en) * | 2019-12-25 | 2020-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
| CN113915184A (en) * | 2021-09-13 | 2022-01-11 | 烟台艾迪液压科技有限公司 | Balance valve with reversing and throttling functions |
-
2016
- 2016-12-30 CN CN201621488274.0U patent/CN206694341U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519554A (en) * | 2018-12-12 | 2019-03-26 | 李军 | A kind of super-pressure relief valve |
| CN111120701A (en) * | 2019-12-25 | 2020-05-08 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
| CN111120701B (en) * | 2019-12-25 | 2022-07-05 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Low pressure maintaining valve with manual pressure relief function |
| CN113915184A (en) * | 2021-09-13 | 2022-01-11 | 烟台艾迪液压科技有限公司 | Balance valve with reversing and throttling functions |
| CN113915184B (en) * | 2021-09-13 | 2024-05-03 | 烟台艾迪液压科技有限公司 | Balance valve with reversing throttling function |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171201 Termination date: 20201230 |