CN205371720U - Add oil pipe check valve and add oil pipe subassembly - Google Patents
Add oil pipe check valve and add oil pipe subassembly Download PDFInfo
- Publication number
- CN205371720U CN205371720U CN201620019660.9U CN201620019660U CN205371720U CN 205371720 U CN205371720 U CN 205371720U CN 201620019660 U CN201620019660 U CN 201620019660U CN 205371720 U CN205371720 U CN 205371720U
- Authority
- CN
- China
- Prior art keywords
- base
- check valve
- filler tube
- valve plate
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000945 filler Substances 0.000 claims description 50
- 239000000446 fuel Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 21
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 52
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000010763 heavy fuel oil Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The utility model discloses an add oil pipe check valve and add oil pipe subassembly, but add the oil pipe check valve and include that the base round trip movement is close to base or keep away from the valve block of base, be equipped with at least one through -hole on the base, the valve block corresponds the through -hole is connected one side of base. The utility model discloses an add the oil pipe check valve for the assembly realizes adding opening and close of oil pipe exit end on adding oil pipe, during the installation, through base cooperation on adding oil pipe, easy and simple to handle, but be close to or keep away from the base through the valve block round trip movement, realize adding opening and close of oil pipe.
Description
Technical Field
The utility model relates to a check valve especially relates to an add oil pipe check valve and add oil pipe subassembly.
Background
At present, the vehicle is refueled by adopting a fuel gun, and fuel is injected into a fuel tank on the vehicle through a fuel filling pipe. After refueling, there is usually residual fuel in the filler tube, and in order to prevent the residual fuel from leaking out, an opening and closing device is arranged in the outlet end of the existing filler tube. The opening and closing device comprises a spring and a steel ball, the spring is installed on the inner wall of the oil filling pipe, and the opening and closing of the outlet end of the oil filling pipe are achieved through the movement of the steel ball. However, the conventional opening and closing device has a complicated structure and is complicated to install in the filler pipe.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in providing a simple to operate's oil pipe check valve and have oil pipe subassembly that adds of this check valve.
The utility model provides a technical scheme that its technical problem adopted is: providing a filler tube check valve for assembly on a filler tube, the check valve including a base, a valve plate movable back and forth either toward or away from the base; the valve plate is connected to one side of the base through the through hole.
Preferably, the check valve further comprises a resilient member that is stretchable and elastic, and the resilient member is connected between the base and the valve plate.
Preferably, one end of the elastic member is connected to a central position of the base, and the other end is connected to the valve plate.
Preferably, the peripheral dimension of valve block is less than the peripheral dimension of base, and is less than the through-hole is in the region that distributes on the base.
Preferably, the base is provided with at least two through holes, and the through holes are symmetrically distributed by taking the center line of the base as the center; the through hole is a fan-shaped hole.
Preferably, the base comprises a cylinder body with one open end and the other closed end, the through hole is formed in the closed end face of the cylinder body, and the valve plate is located at the open end of the cylinder body and can move back and forth to enter and exit the cylinder body.
Preferably, the outer periphery of the cylinder body is provided with a thread matched with the inner periphery of the end part of the oil filling pipe; or,
and the periphery or the open end face of the cylinder body is provided with an annular step matched with the port of the oil filling pipe.
The utility model also provides an oil filling pipe component, which comprises an oil filling pipe with an inlet end connected with the gun body of the oil filling gun and any one of the check valves; the check valve is disposed on an outlet end of the filler tube.
Preferably, an oil outlet channel and a self-sealing channel which extend along the axial direction of the oil filling pipe and are isolated from each other are arranged in the oil filling pipe;
the oil outlet channel is communicated with the inlet end and the outlet end of the oil filling pipe; a valve plate of the check valve is positioned in the oil outlet channel, and the valve plate moves towards the direction close to or far away from the base to open or close the oil outlet channel;
the self-sealing channel is cut off at the inner side of the outlet end of the oil filling pipe, and the side wall of the oil filling pipe close to the outlet end is provided with a self-sealing hole which radially penetrates through the self-sealing channel.
Preferably, a sealing step is arranged in the oil outlet channel; the valve plate is pressed tightly under the pushing action of the elastic piece of the check valve to seal the oil outlet channel.
The oil filling pipe check valve of the utility model is used for being assembled on an oil filling pipe to realize the opening and closing of the outlet end of the oil filling pipe; during the installation, through the base cooperation on adding oil pipe, easy and simple to handle, can the round trip movement be close to or keep away from the base through the valve block, realize adding opening and close of oil pipe, and effectively prevent to add oil pipe oil drip.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic cross-sectional view of a filler tube assembly according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a check valve according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the fuel filler pipe assembly of an embodiment of the present invention includes a fuel filler pipe 10 and a check valve 20, wherein an inlet end 11 of the fuel filler pipe 10 is used for connecting to a fuel gun body, and the check valve 20 is disposed on an outlet end 12 of the fuel filler pipe 10. When in refueling, fuel can flow from the gun body to the refueling pipe 10 and flows out of the refueling pipe 10 through the check valve 20; the fuel does not flow back into the filler tube 10 from the outlet end of the filler tube 10, blocked by the check valve 20. Also, the check valve seals the filler tube 10 when not refueling, preventing oil dripping from the filler tube 10.
As shown in FIGS. 1 and 2, the check valve 20 is adapted to be mounted on the filler tube 10 and includes a base 21, and a valve plate 22 that is movable back and forth either toward or away from the base 21. The base 21 is provided with at least one through hole 210 for fuel to pass through; valve plate 22 is connected to one side of base 22 corresponding to through hole 210.
On the filler tube 10, the valve sheet 22 is located within the filler tube 10. When fuel flows to the outlet end 12 in the fuel filling pipe 10, the valve plate 22 moves close to the base 21 under pressure, a channel in the fuel filling pipe 10 is opened, and the fuel flows to the base 21 from the direction of the valve plate 22 and passes through the through hole 210 on the base 21, so that the fuel flows out of the fuel filling pipe 10; when fuel flows into the check valve 20 from the outlet end 12 of the filler tube 10, the fuel passes through the through hole in the base 21, and the valve plate 22 is moved away from the base 21 by pressure, closing the passage in the filler tube 10, thereby preventing the fuel from flowing backward.
The outer circumference of valve plate 22 is smaller than that of base 21, and the portion of base 21 larger than valve plate 22 forms an annular channel at the outer circumference of valve plate 22 for fuel to pass through. Further, the size of valve plate 22 is smaller than the area where through holes 210 are distributed on base 21, so that even if valve plate 22 moves close to base 21 to cover base 21, through holes 210 are not all closed, and communication of check valve 20 is maintained.
Preferably, at least two through holes 210 are formed on the base 21, and the through holes 210 are symmetrically distributed with the center line of the base 21 as the center. The through-hole 210 may be a fan-shaped hole. As shown in fig. 2, in the present embodiment, four fan-shaped through holes 210 are provided on the base 21, and the four through holes 210 are evenly spaced and symmetrically distributed on the base 21.
As an embodiment, the base 21 may include a cylinder having one end open and the other end closed. The through hole 210 is arranged on the closed end surface of the cylinder, and the valve plate 22 is located at the open end of the cylinder and can move back and forth in and out of the cylinder.
To achieve a secure connection between the base 21 and the fuel filler tube 10, the outer circumference of the barrel may be threaded to mate with the inner circumference of the end of the fuel filler tube 10 so that the base 21 is threadably mounted on the fuel filler tube 10. Alternatively, the outer periphery or open end face of the barrel is provided with an annular step to mate with the port of the filler tube 10 so that the base 21 can be snap fitted over the filler tube 10.
The check valve further comprises a resilient, elastic member 23, which elastic member 23 is connected between the base 21 and the valve plate 22. When the valve plate 22 is acted by external force, the valve plate moves towards the direction close to the base 21, and the elastic piece 23 is compressed; when the external force is removed, the valve plate 22 moves away from the base 21 and resets under the restoring force of the elastic member 23.
In this embodiment, one end of the elastic member 23 is connected to the center of the base 21, and the other end is connected to the valve sheet 22. The elastic member 23 is preferably a spring. In addition, the valve sheet 22 is preferably parallel to the base 21.
The filler tube 10 is a fixed inflexible metal tube, and may also be a bendable metal tube.
As also shown in FIG. 1, a fuel outlet passage 101 and a self-sealing passage 102 are provided in the fuel filler tube 10, extending in the axial direction of the fuel filler tube 10 and isolated from each other.
The oil outlet passage 101 penetrates through the inlet end and the outlet end of the oil filling pipe 10; the valve plate 22 of the check valve 20 is located in the oil outlet passage 101, and the valve plate 22 moves toward or away from the base 21 to open or close the oil outlet passage 101. The self-sealing channel 102 is cut off from the inner side of the outlet end 12 of the filler tube 10, and the sidewall of the filler tube 10 adjacent to the outlet end 12 is provided with a self-sealing hole 103 radially penetrating to the self-sealing channel 102.
When the check valve 22 is assembled to the filler tube 10, it is only necessary to mount the valve sheet 22 on the outlet end 12 of the filler tube 10 with the base 21 fitted to the outlet end 12 of the filler tube 10 toward the filler tube 10, which is convenient to operate.
Wherein, the oil outlet channel 101 is provided with a sealing step 13; the valve plate 22 is pressed against the sealing step 13 by the urging force of the elastic member 23 of the check valve 20, and the oil outlet passage 101 is closed. The sealing step 13 is an annular step arranged on the inner wall of the oil filling pipe 10, a hole in the middle of the annular step is smaller than the valve plate 22, and when the valve plate 22 is tightly pressed on the sealing step 13, the hole in the middle of the annular step is closed.
The utility model discloses an when refueling the use on the nozzle, the oil pump pumps the fuel, and the fuel is pumped to oil pipe 10 from the rifle body with higher oil pressure, flows to valve block 22 at the oil outlet channel 101 of oil pipe 10, bulldozes valve block 22, makes valve block 22 remove and leave sealed step 13 to being close to base 21 direction, opens oil outlet channel 101, and the fuel flows through-hole 210 on through oil outlet channel 101 and base 21. When fuel oil flows back to the valve plate 22 through the through hole 210, the valve plate 22 is pushed and pressed on the sealing step 13 to close the oil outlet channel 101, and the fuel oil is prevented from entering the oil outlet channel 101. When the oil is not filled, the valve sheet 22 is pressed on the sealing step 13 by the elastic piece 23, the oil outlet channel 101 is closed, and the oil dripping of the oil filling pipe 10 is prevented.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. A filler tube check valve for fitting on a filler tube (10), characterized in that the check valve (20) comprises a base (21), a valve plate (22) movable back and forth either closer to the base (21) or further from the base (21); the valve plate is characterized in that at least one through hole (210) is formed in the base (21), and the valve plate (22) corresponds to the through hole (210) and is connected to one side of the base (21).
2. The filler tube check valve of claim 1, wherein the check valve (20) further comprises a resilient member (23) that is stretchable, the resilient member (23) being connected between the base (21) and the valve plate (22).
3. The filler pipe check valve according to claim 2, wherein the elastic member (23) has one end connected to a central position of the base (21) and the other end connected to the valve sheet (22).
4. The filler tube check valve of claim 1, wherein the valve plate (22) has a peripheral dimension smaller than that of the base (21) and smaller than an area where the through holes (210) are distributed on the base (21).
5. The filler tube check valve according to claim 1, wherein at least two through holes (210) are provided on the base (21), the through holes (210) being symmetrically distributed about a center line of the base (21); the through hole (210) is a fan-shaped hole.
6. The filler tube check valve of any of claims 1-5, wherein the base (21) comprises a cylindrical body with one open end and the other closed end, the through hole (210) is disposed on the closed end surface of the cylindrical body, and the valve plate (22) is disposed on the open end of the cylindrical body and can move back and forth into and out of the cylindrical body.
7. The filler tube check valve of claim 6, wherein the outer circumference of the barrel is provided with threads that mate with the inner circumference of the end of the filler tube (10); or,
the periphery or the open end face of the cylinder body is provided with an annular step matched with the port of the oil filling pipe (10).
8. A filler tube assembly comprising a filler tube (10) having an inlet end (11) connected to a body of a fuel gun and a check valve (20) as claimed in any one of claims 1 to 7; the check valve (20) is disposed on the outlet end (12) of the filler tube (10).
9. The filler tube assembly of claim 8, wherein said filler tube (10) has a fluid outlet passage (101) and a self-sealing passage (102) extending axially along said filler tube (10) and isolated therefrom;
the oil outlet channel (101) penetrates through the inlet end (11) and the outlet end (12) of the oil filling pipe (10); a valve plate (22) of the check valve (20) is positioned in the oil outlet channel (101), and the valve plate (22) moves towards the direction close to or away from the base (21) to open or close the oil outlet channel (101);
The self-sealing channel (102) is cut off at the inner side of the outlet end (12) of the oil filling pipe (10), and a self-sealing hole (103) which radially penetrates through the self-sealing channel (102) is formed in the side wall, close to the outlet end (12), of the oil filling pipe (10).
10. The filler tube assembly of claim 9, wherein a sealing step (13) is provided in the oil outlet passage (101); the valve plate (22) is pressed tightly under the pushing action of the elastic piece (23) of the check valve (20) to seal the sealing step (13) and seal the oil outlet channel (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620019660.9U CN205371720U (en) | 2016-01-07 | 2016-01-07 | Add oil pipe check valve and add oil pipe subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620019660.9U CN205371720U (en) | 2016-01-07 | 2016-01-07 | Add oil pipe check valve and add oil pipe subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371720U true CN205371720U (en) | 2016-07-06 |
Family
ID=56275513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620019660.9U Active CN205371720U (en) | 2016-01-07 | 2016-01-07 | Add oil pipe check valve and add oil pipe subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371720U (en) |
-
2016
- 2016-01-07 CN CN201620019660.9U patent/CN205371720U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |