CN207229838U - Unidirectional fuel tap - Google Patents
Unidirectional fuel tap Download PDFInfo
- Publication number
- CN207229838U CN207229838U CN201720918735.1U CN201720918735U CN207229838U CN 207229838 U CN207229838 U CN 207229838U CN 201720918735 U CN201720918735 U CN 201720918735U CN 207229838 U CN207229838 U CN 207229838U
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- China
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- oil
- chamber
- plunger shaft
- inner sleeve
- groove
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Abstract
It the utility model is related to a kind of unidirectional fuel tap, including valve body, valve body is equipped with oil inlet end and oil outlet end, the valve chamber for connecting its oil inlet end and oil outlet end is equipped with valve body, valve chamber is from oil inlet end to oil outlet end is in turn divided into oil suction chamber, oil return blocks chamber, plunger shaft and oil suction chamber；Oil return blocks the piston for being equipped between chamber and plunger shaft and being used for that oil return to be blocked to chamber closure/opening from inner side；Piston inside and outside can be plugged in oil return with displacement and block intracavitary, its front end is equipped with lead-in groove, and the entrance and exit of its lead-in groove is divided into its front end face and side wall, its waist is equipped with seal groove, is equipped with sealing ring in its seal groove, its rear end is exposed in plunger shaft；Inner sleeve is equipped with oil outlet chamber, the inner side wall of inner sleeve is equipped with the notch for connecting its mantle cavity with plunger shaft；Plug-in type export mouth is equipped with inner sleeve.The utility model durability and reliability are preferable, using more convenient.
Description
Technical field
It the utility model is related to valve, and in particular to a kind of unidirectional fuel tap.
Background technology
Common unidirectional fuel tap, its valve chamber is interior to be equipped with the partition plate for separating oil pocket, and partition plate is equipped with oil-through hole, and partition plate leans on out
Oily end side is equipped with diaphragm, and diaphragm is close on partition plate and blocks oil-through hole.During fuel feeding, the high pressure oil of oil inlet end via
Oil-through hole, by the diaphragm crimp of partition plate opposite side, is formed by partition plate between the periphery of diaphragm and valve chamber inner wall
Gap, so that oil circuit be turned on；During oil-break, the oil return of oil outlet end is blocked by diaphragm, can not enter oil inlet end by partition plate.By
In preventing oil return using diaphragm, diaphragm durability is not high, and usage time has been grown yielding, and deformed diaphragm can not will
Oil-through hole on partition plate blocks completely, and anti-oil return effect is bad.In addition, common unidirectional fuel tap is without export mouth, during use
Also need separately with export mouth, it is inconvenient to use.
Utility model content
The utility model discloses a kind of unidirectional fuel tap, it is intended to improves the above-mentioned deficiency present in existing unidirectional fuel tap.
The technical solution of the utility model is：
A kind of unidirectional fuel tap, including valve body, valve body are equipped with oil inlet end and oil outlet end, be equipped with valve body connect its oil inlet end and
The valve chamber of oil outlet end, valve chamber is from oil inlet end to oil outlet end is in turn divided into oil suction chamber, oil return blocks chamber, plunger shaft and oil suction chamber；
Oil return blocks the piston for being equipped between chamber and plunger shaft and being used for that oil return to be blocked to chamber closure/opening from inner side；
Piston inside and outside can be plugged in oil return with displacement and block intracavitary, its front end is equipped with lead-in groove, the entrance of its lead-in groove with
Outlet is divided into its front end face and side wall, its waist is equipped with seal groove, is equipped with sealing ring in its seal groove, its rear end is exposed in work
Fill in intracavitary；
Inner sleeve is equipped with oil outlet chamber, the inner side wall of inner sleeve is equipped with the notch for connecting its mantle cavity with plunger shaft；
Plug-in type export mouth is equipped with inner sleeve；
After piston inward displacement, its waist coordinates with sealing ring to block chamber to block completely oil return, fuel-displaced to prevent
The oil return at end enters oil inlet end；
After piston is displaced outwardly, thereafter end face can offset with the front end face of inner sleeve, lead-in groove set by its front end side wall
Entrance is exposed to plunger shaft, and oil suction chamber, oil return are blocked chamber and plunger shaft to turn on, passed through between plunger shaft and interior mantle cavity by lead-in groove
Notch arranged on inner sleeve front end is interconnected, so as to turn on oil circuit.
Compared to unidirectional fuel tap before, the utility model prevents oil return using a piston, and piston can be to valve chamber
Two end movements, it, so as to open fuel tap, oil pocket can be blocked when it is to oil inlet end movement to that can turn on oil pocket during fuel-displaced end movement,
So as to close fuel tap.Since piston is unlikely to deform, the utility model durability and reliability are preferable；In addition, the utility model
Export mouth is carried, using more convenient.
Brief description of the drawings
General structure schematic diagram when Fig. 1 is the utility model embodiment fuel feeding
General structure schematic diagram when Fig. 2 is the utility model embodiment oil-break
Fig. 3 is the piston structure schematic diagram of the utility model embodiment
Embodiment
The utility model is illustrated with specific embodiment below in conjunction with the accompanying drawings.
With reference to Fig. 1-3：
A kind of unidirectional fuel tap, including valve body 1, valve body 1 are equipped with oil inlet end and oil outlet end, are equipped with valve body 1 and connect its oil inlet
End and the valve chamber of oil outlet end, valve chamber is from oil inlet end to oil outlet end is in turn divided into oil suction chamber 101, oil return blocks chamber 102, piston
Chamber 103 and oil suction chamber 104；Oil return, which blocks to be equipped between chamber 102 and plunger shaft 103, to be used to block 102 envelope of chamber from inner side by oil return
The piston 2 of stifled/opening.
Piston 2 inside and outside can be plugged in oil return with displacement and block in chamber 102, its front end is equipped with lead-in groove 201, its lead-in groove
201 entrance and exit is divided into its front end face and side wall, its waist is equipped with seal groove 202, and sealing is equipped with its seal groove 202
Circle 3, its rear end is exposed in plunger shaft 103.
Inner sleeve 4 is equipped with oil outlet chamber 104, the inner side wall of inner sleeve 4 is equipped with the groove for connecting its mantle cavity with plunger shaft 103
Mouth 401.
Plug-in type export mouth 5 is equipped with inner sleeve 4；
During fuel feeding, oil return can be blocked chamber 102 to block completely by 2 inward displacement of piston, the sealing ring 3 set by its waist,
To prevent the oil return of oil outlet end from entering oil inlet end；
During oil-break, piston 2 is displaced outwardly, thereafter end face can offset with the front end face of inner sleeve 4, leading set by its front end side wall
The entrance for entering groove 201 is exposed to plunger shaft 103, and oil suction chamber 101, oil return are blocked chamber 102 and plunger shaft 103 to lead by lead-in groove 201
It is logical, it is interconnected between 4 chamber of plunger shaft 103 and inner sleeve by the notch 401 arranged on 4 front end of inner sleeve, so as to turn on oil circuit.
Claims (1)
1. a kind of unidirectional fuel tap, including valve body (1), valve body (1) is equipped with oil inlet end and oil outlet end, is equipped with valve body (1) and connects it
The valve chamber of oil inlet end and oil outlet end, it is characterised in that：Valve chamber is in turn divided into oil suction chamber (101) from oil inlet end to oil outlet end, returns
Oil blocks chamber (102), plunger shaft (103) and oil suction chamber (104)；Oil return is blocked to be equipped between chamber (102) and plunger shaft (103) and used
In the piston (2) that oil return is blocked to chamber (102) closure/opening from inner side；
Piston (2) inside and outside can be plugged in oil return with displacement and block in chamber (102), its front end is equipped with lead-in groove (201), its lead-in groove
(201) entrance and exit is divided into its front end face and side wall, its waist is equipped with seal groove (202), is set in its seal groove (202)
There is sealing ring (3), its rear end is exposed in plunger shaft (103)；
Inner sleeve (4) is equipped with oil outlet chamber (104), the inner side wall of inner sleeve (4) is equipped with connect its mantle cavity with plunger shaft (103)
Notch (401)；
Plug-in type export mouth (5) is equipped with inner sleeve (4)；
After piston (2) inward displacement, oil return can be blocked chamber (102) to block completely by the sealing ring (3) set by its waist, to prevent
Only the oil return of oil outlet end enters oil inlet end；
After piston (2) is displaced outwardly, thereafter end face can offset with the front end face of inner sleeve (4), the lead-in groove set by its front end side wall
(201) entrance is exposed to plunger shaft (103), and oil suction chamber (101), oil return are blocked chamber (102) and plunger shaft by lead-in groove (201)
(103) turn on, be interconnected between plunger shaft (103) and inner sleeve (4) chamber by the notch (401) arranged on inner sleeve (4) front end, from
And turn on oil circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918735.1U CN207229838U (en) | 2017-07-26 | 2017-07-26 | Unidirectional fuel tap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720918735.1U CN207229838U (en) | 2017-07-26 | 2017-07-26 | Unidirectional fuel tap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229838U true CN207229838U (en) | 2018-04-13 |
Family
ID=61856082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720918735.1U Active CN207229838U (en) | 2017-07-26 | 2017-07-26 | Unidirectional fuel tap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229838U (en) |
-
2017
- 2017-07-26 CN CN201720918735.1U patent/CN207229838U/en active Active
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| GR01 | Patent grant |