CN215927628U - Fuel supply system and vacuum oil switch thereof - Google Patents
Fuel supply system and vacuum oil switch thereof Download PDFInfo
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- CN215927628U CN215927628U CN202122293325.1U CN202122293325U CN215927628U CN 215927628 U CN215927628 U CN 215927628U CN 202122293325 U CN202122293325 U CN 202122293325U CN 215927628 U CN215927628 U CN 215927628U
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- oil
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Abstract
A fuel supply system and its vacuum oil switch, the fuel supply system includes the vacuum oil switch; this vacuum oil switch installs on fuel supply system's body, includes: the base is installed on a body of the fuel oil supply system, an oil inlet is formed in the bottom end of the base, an oil outlet is formed in one side, connected with the body, of the base, the oil inlet is communicated with the oil outlet through a switch oil way arranged in the base, and the switch oil way is communicated with an oil way of the fuel oil supply system through the oil outlet; the upper cover is arranged at the top end of the base, the upper cover and the base together enclose a vacuum cavity, an air suction port is arranged on the upper cover, and the air suction port is connected with an engine; a diaphragm disposed within the vacuum chamber; and the oil needle is arranged in the switch oil circuit and is connected with the diaphragm, and the oil needle has an opening position and a closing position relative to the oil outlet respectively. The utility model has simple structure, convenient use, stable performance, safety and reliability.
Description
Technical Field
The utility model relates to a fuel supply system, in particular to a vacuum oil switch and a fuel supply system with the vacuum oil switch.
Background
With the development of society, motor homes are more and more common, and standby electricity required on the motor homes needs to be supplied by an engine. The engine does not work when the motor home is in operation, a fuel supply system on the engine is always communicated with the fuel tank, the motor home jolts due to uneven roads or slopes and the like, the fuel supply system is easy to leak oil, and potential safety hazards exist. Adopt the solenoid valve to seal the fuel feed system of oil circuit among the prior art, but be used in this structural solenoid valve performance unstability, the solenoid valve fault rate is high, and this solenoid valve's with high costs, can't satisfy the market demand.
SUMMERY OF THE UTILITY MODEL
The present invention provides a fuel supply system and a vacuum oil switch thereof, aiming at the above-mentioned defects of the prior art.
In order to achieve the above object, the present invention provides a vacuum oil switch mounted on a body of a fuel supply system, wherein the vacuum oil switch comprises:
the base is installed on a body of the fuel oil supply system, an oil inlet is formed in the bottom end of the base, an oil outlet is formed in one side, connected with the body, of the base, the oil inlet and the oil outlet are communicated through a switch oil way arranged in the base, and the switch oil way is communicated with an oil way of the fuel oil supply system through the oil outlet;
the upper cover is arranged at the top end of the base, the upper cover and the base jointly enclose a vacuum cavity, an air suction opening is formed in the upper cover, and the air suction opening is connected with an engine;
a diaphragm disposed within the vacuum chamber; and
the oil needle is arranged in the switch oil path and connected with the diaphragm, and the oil needle has an opening position and a closing position relative to the oil outlet respectively.
In the vacuum oil switch, a diaphragm spring is further provided, one end of the diaphragm spring is connected with the diaphragm, and the other end of the diaphragm spring abuts against the inner wall of the air suction port of the upper cover.
In the vacuum oil switch, an oil needle spring is further arranged, the oil needle spring is sleeved on the oil needle, one end of the oil needle spring is connected with the upper part of the oil needle, and the other end of the oil needle spring abuts against the inner wall of the switch oil way.
In the vacuum oil switch, the air exhaust port is provided with the vacuum pipe joint, and the air exhaust port is connected with the engine through the vacuum pipe joint.
In the vacuum oil switch, the oil inlet is provided with the oil inlet pipe, and the oil inlet is communicated with the oil tank through the oil inlet pipe.
In the vacuum oil switch, the base is fixedly connected with the upper cover through the upper cover fixing screw.
In the vacuum oil switch, the base is fixedly connected with the body through the oil switch fixing screw.
In the vacuum oil switch, the oil inlet, the switch oil path, the oil needle and the pumping port are coaxially arranged.
In the vacuum oil switch, an axis of the oil outlet is perpendicular to an axis of the oil inlet.
In order to better achieve the above object, the present invention further provides a fuel supply system, wherein the vacuum oil switch is included.
The utility model has the beneficial effects that:
the utility model adopts the vacuum formed by the engine to control the oil circuit, realizes the functions of automatically opening the oil circuit when the engine is started and automatically closing the oil circuit when the engine is closed, and has the advantages of simplicity, convenience, stable performance, safety and reliability. When the engine does not run, the vacuum oil switch can seal the oil way and the oil tank of the fuel oil supply system, so that gasoline is prevented from entering the fuel oil supply system, and the risk of oil leakage is avoided; when the engine runs, the air in the vacuum cavity is sucked away by the suction force formed by the engine, the membrane assembly of the vacuum oil switch is sucked upwards, and at the moment, the oil needle moves upwards under the action of the spring to open the oil circuit. Compared with the electromagnetic valve structure adopted in the prior art, the electromagnetic valve structure has the advantages of reducing cost and being more beneficial to production.
The utility model is described in detail below with reference to the drawings and specific examples, but the utility model is not limited thereto.
Drawings
FIG. 1 is a schematic structural view of a fuel supply system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vacuum oil switch according to an embodiment of the present invention;
FIG. 3 is a schematic view of a base structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of a vacuum tube connector structure according to an embodiment of the present invention;
FIG. 5 is a schematic view of an oil inlet tube structure according to an embodiment of the utility model;
FIG. 6 is a cross-sectional view of a vacuum type oil switch according to an embodiment of the present invention in a sealed state;
fig. 7 is a cross-sectional view of a vacuum type oil switch according to an embodiment of the present invention in an open state.
Wherein the reference numerals
1 main body
2 vacuum oil switch
21 base
211 oil inlet
212 oil outlet
22 upper cover
221 air extraction opening
23 Upper cover fixing screw
24 vacuum tube joint
25 diaphragm spring
26 diaphragm
27 oil needle spring
28 oil needle
29 oil inlet pipe
20 vacuum chamber
3 oil switch fixing screw
Detailed Description
The utility model will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
referring to fig. 1, fig. 1 is a schematic structural diagram of a fuel supply system according to an embodiment of the present invention. The fuel supply system of the present invention includes a body 1 and a vacuum oil switch 2 installed at one side of the body 1. The composition, structure, mutual position relationship, connection relationship and working principle of other parts of the fuel supply system are mature prior art, so that the detailed description is not repeated herein, and only the vacuum oil switch 2 of the present invention is described in detail below.
Referring to fig. 2 and 3, fig. 2 is a schematic structural diagram of a vacuum oil switch 2 according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of a base 21 according to an embodiment of the present invention. The vacuum oil switch 2 of the present invention is mounted on a body 1 of a fuel supply system, and the vacuum oil switch 2 includes: the base 21 is installed on the body 1 of the fuel supply system, and the base 21 is preferably fixedly connected with the body 1 through an oil switch fixing screw 3; an oil inlet 211 is formed in the bottom end of the base 21, an oil outlet 212 is formed in one side, connected with the body 1, of the base 21, the oil inlet 211 and the oil outlet 212 are communicated through a switch oil path arranged in the base 21, and the switch oil path is communicated with an oil path of the fuel oil supply system through the oil outlet 212; the upper cover 22 is installed at the top end of the base 21, the base 21 and the upper cover 22 are preferably fixedly connected through an upper cover fixing screw 23, the upper cover 22 and the base 21 together enclose a vacuum cavity 20, an air suction opening 221 is formed in the upper cover 22, and the air suction opening 221 is connected with an engine; a diaphragm 26 disposed within the vacuum chamber 20; and an oil needle 28 disposed in the switch oil path and connected to the diaphragm 26, the oil needle 28 having an open position and a closed position with respect to the oil outlet 212, respectively. Preferably, the oil inlet 211, the switch oil path, the oil needle 28 and the pumping port 221 are coaxially arranged; preferably, the axis of the oil outlet 212 is perpendicular to the axis of the oil inlet 211.
In this embodiment, a diaphragm spring 25 is further provided, one end of the diaphragm spring 25 is connected to the diaphragm 26, and the other end of the diaphragm spring 25 abuts against the inner wall of the air exhaust port 221 of the upper cover 22. An oil needle spring 27 may be further provided, the oil needle spring 27 is sleeved on the oil needle 28, one end of the oil needle spring 27 is connected with the upper part of the oil needle 28, and the other end of the oil needle spring 27 abuts against the inner wall of the switch oil path.
Referring to fig. 4 and 5, fig. 4 is a schematic structural view of a vacuum tube joint 24 according to an embodiment of the present invention, and fig. 5 is a schematic structural view of an oil inlet tube 29 according to an embodiment of the present invention. The air extraction opening 221 of this embodiment is mounted with a vacuum pipe joint 24, and the air extraction opening 221 is connected with the engine through the vacuum pipe joint 24. The oil inlet 211 is provided with an oil inlet pipe 29, and the oil inlet 211 is communicated with an oil tank through the oil inlet pipe 29.
Referring to fig. 6 and 7, fig. 6 is a cross-sectional view illustrating a sealed state of a vacuum oil switch according to an embodiment of the present invention, and fig. 7 is a cross-sectional view illustrating an opened state of the vacuum oil switch according to an embodiment of the present invention. The utility model adopts the vacuum formed by the engine to control the oil circuit, realizes the functions of automatically opening the oil circuit when the engine is started and automatically closing the oil circuit when the engine is closed, and has the advantages of simplicity, convenience, stable performance, safety and reliability. When the engine does not run, the oil needle 28 of the vacuum oil switch 2 is positioned at the closing position under the action of the oil needle spring 27 and the diaphragm spring 25, and the oil path of the switch can be closed, so that the oil path between the oil path of the fuel oil supply system and the oil tank is disconnected, the gasoline in the oil tank is prevented from entering the fuel oil supply system, and the risk of oil leakage is avoided; when the engine runs, the air in the vacuum cavity 20 of the vacuum oil switch 2 is sucked away by the suction force formed by the engine, the diaphragm 26 in the vacuum cavity 20 is sucked upwards, the oil needle 28 is moved upwards to an opening position under the action of the oil needle spring 27, and the oil circuit of the switch is opened, so that the oil tank is communicated with the oil circuit of the fuel oil supply system; when the engine stops, the diaphragm 26 and the oil needle 28 return to the closed position by the diaphragm spring 25 and the oil needle spring 27, respectively.
Compared with the electromagnetic valve structure adopted in the prior art, the electromagnetic valve structure has the advantages of reducing cost and being more beneficial to production.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A vacuum oil switch mounted on a body of a fuel supply system, the vacuum oil switch comprising:
the base is installed on a body of the fuel oil supply system, an oil inlet is formed in the bottom end of the base, an oil outlet is formed in one side, connected with the body, of the base, the oil inlet and the oil outlet are communicated through a switch oil way arranged in the base, and the switch oil way is communicated with an oil way of the fuel oil supply system through the oil outlet;
the upper cover is arranged at the top end of the base, the upper cover and the base jointly enclose a vacuum cavity, an air suction opening is formed in the upper cover, and the air suction opening is connected with an engine;
a diaphragm disposed within the vacuum chamber; and
the oil needle is arranged in the switch oil path and connected with the diaphragm, and the oil needle has an opening position and a closing position relative to the oil outlet respectively.
2. The vacuum oil switch as claimed in claim 1, wherein a diaphragm spring is further provided, one end of the diaphragm spring is connected to the diaphragm, and the other end of the diaphragm spring abuts against an inner wall of the suction port of the upper cover.
3. The vacuum oil switch according to claim 1 or 2, wherein an oil needle spring is further provided, the oil needle spring is sleeved on the oil needle, one end of the oil needle spring is connected with the upper part of the oil needle, and the other end of the oil needle spring abuts against the inner wall of the switch oil circuit.
4. The vacuum oil switch as claimed in claim 3, wherein a vacuum pipe joint is installed on the suction port, and the suction port is connected to the engine through the vacuum pipe joint.
5. The vacuum oil switch as claimed in claim 3, wherein the oil inlet is mounted with an oil inlet pipe, and the oil inlet is communicated with the oil tank through the oil inlet pipe.
6. The vacuum oil switch as claimed in claim 3, wherein the base is fixedly connected to the upper cover by an upper cover fixing screw.
7. The vacuum oil switch of claim 3 wherein said base is fixedly attached to said body by an oil switch set screw.
8. The vacuum oil switch of claim 3, wherein the oil inlet, the switch oil path, the oil needle and the suction port are coaxially arranged.
9. The vacuum oil switch of claim 8, wherein an axis of said oil outlet is perpendicular to an axis of said oil inlet.
10. A fuel supply system comprising a vacuum oil switch as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122293325.1U CN215927628U (en) | 2021-09-23 | 2021-09-23 | Fuel supply system and vacuum oil switch thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122293325.1U CN215927628U (en) | 2021-09-23 | 2021-09-23 | Fuel supply system and vacuum oil switch thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215927628U true CN215927628U (en) | 2022-03-01 |
Family
ID=80417587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122293325.1U Active CN215927628U (en) | 2021-09-23 | 2021-09-23 | Fuel supply system and vacuum oil switch thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215927628U (en) |
-
2021
- 2021-09-23 CN CN202122293325.1U patent/CN215927628U/en active Active
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