CN213598091U - Switching structure for fuel oil circuit of carburetor - Google Patents
Switching structure for fuel oil circuit of carburetor Download PDFInfo
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- CN213598091U CN213598091U CN202022948144.3U CN202022948144U CN213598091U CN 213598091 U CN213598091 U CN 213598091U CN 202022948144 U CN202022948144 U CN 202022948144U CN 213598091 U CN213598091 U CN 213598091U
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Abstract
The utility model relates to the technical field of a carburetor, and discloses a carburetor fuel oil circuit on-off switching structure, the carburetor includes a body and a lower casing connected to the lower part of the body, an oil inlet pipe is connected to the body, a main jet pipe communicated with a mixing chamber is arranged in the body, a float chamber communicated with the oil inlet pipe is arranged in the lower casing, when the carburetor is in a fuel oil state, fuel oil enters the body through the oil inlet pipe and reaches the float chamber, a valve rod is pulled open under the action of external force, the fuel oil circuit is connected, the fuel oil reaches a main jet hole through a connecting screw, and mixed gas is formed after the main jet pipe is mixed with air and then is conveyed; when the fuel oil is not used, the fuel oil enters the body through the oil inlet pipe and reaches the float chamber, the valve rod is not acted by external force, the oil outlet is blocked by the valve rod, the fuel oil way is disconnected, and the engine cannot use the fuel oil at the moment.
Description
Technical Field
The utility model relates to a technical field of carburetor especially relates to a carburetor fuel oil circuit break-make switching structure.
Background
The carburetor is a mechanical device which mixes fuel oil and air in a certain proportion under the action of vacuum generated by the operation of an engine. A carburetor is a precise mechanical device which uses the kinetic energy of the intake air flow to atomize the fuel. Its important role in the engine may be referred to as the engine's "heart".
When the engine works normally, the required rotating speed is high, the fuel gas introduced into the oil inlet pipe enters the main jet pipe through the main metering orifice and is fully mixed with air to be combusted so as to improve larger power for the engine, when the engine is flamed out or fuel oil is not needed, the fuel oil supply of the oil inlet pipe needs to be cut off, the switching structure of the on-off of the existing fuel oil circuit is complex, and great inconvenience is brought to the operation.
Disclosure of Invention
The utility model aims at providing a carburetor fuel oil circuit break-make switches structure to the switching structure who solves current fuel oil circuit break-make is complicated, brings very big inconvenient problem for the operation.
In order to solve the problem, the utility model provides a structure is switched to carburetor fuel oil circuit break-make, the carburetor include the body and connect in the lower casing of body lower part, be connected with into oil pipe on the body, this internal main spray nozzle that communicates with the mixing chamber that is equipped with, internal being equipped with of inferior valve with advance the float chamber of oil pipe intercommunication, the lateral part of casing is equipped with the disk seat down, one side of disk seat be equipped with the oil inlet of float chamber intercommunication, the one end of disk seat be equipped with the oil-out of main spray nozzle intercommunication, the other end of disk seat is connected with the valve rod seat, it is equipped with the valve rod to slide in the valve rod seat, the valve rod along the disk seat slides in order to be close to the shutoff and blocks up the oil.
Further, the valve seat is internally provided with a conical opening close to the oil outlet, the valve rod is provided with a ring groove, a first sealing element is arranged in the ring groove, and when the valve rod is close to the oil outlet, the first sealing element is abutted to the side wall of the opening.
Further, be close to on the valve rod annular department is equipped with the annular arch, the valve rod seat is equipped with the step groove, the cover is equipped with the spring on the valve rod, the one end butt of spring in on the arch, the other end butt in the step groove.
Furthermore, a gasket is arranged on the valve rod and abuts against the step groove, and the spring abuts against the gasket.
Further, a second seal is disposed between the valve stem and the valve stem seat.
Further, a third sealing element is arranged between the valve rod seat and the valve seat.
The utility model provides a carburetor fuel oil circuit break-make switching structure, the carburetor includes the body and connects in the lower casing of body lower part, be connected with the oil feed pipe on the body, be equipped with the main nozzle that communicates with the mixing chamber in the body, be equipped with the float chamber that communicates with the oil feed pipe in the lower casing, use the fuel state, the fuel gets into the body through the oil feed pipe and reaches the float chamber, the valve rod is pulled open under the exogenic action, the fuel oil circuit switch-on this moment, the fuel reaches the main metering orifice through the connecting screw, form the gas mixture after main nozzle and air mixing and carry to the engine again; when the fuel oil is not used, the fuel oil enters the body through the oil inlet pipe and reaches the float chamber, the valve rod is free from the action of external force, the oil outlet is blocked by the valve rod, the fuel oil way is disconnected, the engine cannot use the fuel oil at the moment, the structure is simple, the operation is convenient, and the switching of the on-off of the fuel oil way can be conveniently and quickly realized.
Drawings
Fig. 1 is a schematic structural diagram of a carburetor fuel oil circuit on-off switching structure in an embodiment of the present invention in a fuel oil using state.
Fig. 2 is a schematic structural diagram of a switching structure of a fuel oil circuit of a carburetor in an unused fuel state according to an embodiment of the present invention.
Fig. 3 is an enlarged schematic view at a in fig. 1.
In the figure, 1, a body; 2. a lower housing; 11. an oil inlet pipe; 12. a main nozzle; 13. a connecting screw; 131. an oil path; 132. a main orifice; 21. a float chamber; 22. a valve seat; 23. an oil inlet; 24. an oil outlet; 25. a valve stem seat; 26. a valve stem; 221. an opening; 251. a step groove; 252. a third seal member; 261. a ring groove; 262. a first seal member; 263. an annular projection; 264. a spring; 265. a gasket; 266. a second seal.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 3, schematically showing a switching structure of a fuel oil path of a carburetor according to an embodiment of the present invention, the carburetor includes a body 1 and a lower casing 2 connected to a lower portion of the body 1, the body 1 is connected to an oil inlet pipe 11, the body 1 is provided with a main nozzle 12 communicated with a mixing chamber, the lower casing 2 is provided with a float chamber 21 communicated with the oil inlet pipe 11, a side portion of the lower casing 2 is provided with a valve seat 22, one side of the valve seat 22 is provided with an oil inlet 23 communicated with the float chamber 21, one end of the valve seat 22 is provided with an oil outlet 24 communicated with the main nozzle 12, the other end of the valve seat 22 is connected to a valve rod seat 25, a valve rod 26 is slidably provided in the valve rod seat 25, the valve rod 26 slides along the valve rod seat 25 to close to the oil outlet 24 or far away from the oil outlet 24, generally, a connecting screw 13 is provided in the, the fuel oil of the float chamber 21 enters the valve seat 22 through the oil inlet 23 and then is communicated with the inlet of the oil path 131 of the connecting screw 13 through the oil outlet 24, the outlet of the oil path 131 is communicated with the main metering hole 132, and is communicated with the main spray pipe 12 through the main metering hole 132, so that the fuel oil can be mixed with air and conveyed to the engine through the main spray pipe 12.
Specifically, in a fuel oil using state, fuel oil enters the body 1 through the oil inlet pipe 11 to reach the float chamber 21, the valve rod 26 is pulled away under the action of external force, wherein the external force can be an air cylinder, a motor and the like, and is not particularly limited, at the moment, the fuel oil path 131 is communicated, the fuel oil reaches the main metering orifice 132 through the connecting screw 13, and then is mixed with air through the main nozzle 12 to form mixed gas to be conveyed to the engine; when the fuel oil is not used, the fuel oil enters the body 1 through the oil inlet pipe 11 and reaches the float chamber 21, the valve rod 26 is free from the action of external force, the oil outlet 24 is blocked by the valve rod 26, the fuel oil way 131 is disconnected, the engine cannot use the fuel oil at the moment, the structure is simple, the operation is convenient, and the switching of the on-off of the fuel oil way can be conveniently and quickly realized.
Further, valve seat 22 is provided with a tapered opening 221 in the position close to oil outlet 24, so that when valve rod 26 slides along valve rod seat 25, the end of valve rod 26 is synchronously close to oil outlet 24 along tapered opening 221, because opening 221 is tapered, when valve rod 26 is closer to oil outlet 24, the end can better block oil outlet 24, valve rod 26 is provided with a ring groove 261, first sealing member 262 is arranged in ring groove 261, when valve rod 26 is close to block oil outlet 24, first sealing member 262 abuts against the side wall of opening 221, under the sealing action of first sealing member 262, fuel can be better prevented from entering main nozzle 12 from the end of valve rod 26 through oil outlet 24, in this embodiment, first sealing member 262 is generally a sealing ring.
In this embodiment, an annular protrusion 263 is disposed on the valve rod 26 near the annular groove 261, the valve rod seat 25 is provided with a step groove 251, the valve rod 26 is sleeved with a spring 264, one end of the spring 264 abuts against the protrusion, and the other end abuts against the step groove 251, when the valve rod 26 is pulled away from the oil inlet 23 under the action of external force, the spring 264 is compressed between the protrusion and the step groove 251 of the valve rod seat 25, so that, when the external force is removed, the valve rod 26 can return to a state of blocking the oil outlet 24 under the action of restoring force of the spring 264, thereby ensuring convenient and labor-saving switching operation. Preferably, the valve rod 26 is provided with a gasket 265, the gasket 265 abuts against the stepped groove 251, and the spring 264 abuts against the gasket 265, so that the gasket 265 can prevent hard contact between the valve rod 26 and the stepped groove 251 of the valve rod seat 25, and the service life is ensured. To further avoid fuel leakage from the connection between the valve stem 26 and the valve stem seat 25, a second seal 266 is provided between the valve stem 26 and the valve stem seat 25. Likewise, a third seal 252 is provided between the stem seat 25 and the valve seat 22 to prevent fuel leakage from the connection of the stem seat 25 and the valve seat 22.
It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a structure is switched over to carburetor fuel oil circuit break-make, the carburetor includes the body and connect in the lower casing of body lower part, be connected with into oil pipe on the body, this internal main nozzle that communicates with the mixing chamber that is equipped with, the internal float chamber that communicates with into oil pipe that is equipped with of lower casing, its characterized in that, the lateral part of lower casing is equipped with the disk seat, one side of disk seat be equipped with the oil inlet of float chamber intercommunication, the one end of disk seat be equipped with the oil-out of main nozzle intercommunication, the other end of disk seat is connected with the valve rod seat, it is equipped with the valve rod to slide in the valve rod seat, the valve rod along the disk seat slides in order to be close to the shutoff the oil.
2. A carburetor fuel oil path on-off switching structure according to claim 1, wherein said valve seat is provided with a tapered opening therein adjacent said oil outlet, said valve stem is provided with an annular groove, said annular groove is provided with a first sealing member, and said first sealing member abuts against a side wall of said opening when said valve stem is adjacent to block said oil outlet.
3. A carburetor fuel oil passage on-off switching structure according to claim 2, wherein said valve stem is provided with an annular projection adjacent to said annular groove, said valve stem seat is provided with a stepped groove, said valve stem is fitted with a spring, one end of said spring abuts against said projection, and the other end abuts against said stepped groove.
4. A carburetor fuel oil passage on-off switching structure according to claim 3, wherein a washer is provided on said valve stem, said washer abuts against said stepped groove, and said spring abuts against said washer.
5. The carburetor fuel line on-off switching arrangement according to claim 4, wherein a second seal is disposed between said valve stem and said valve stem seat.
6. The carburetor fuel line on-off switching arrangement according to claim 5, wherein a third seal member is disposed between said valve stem seat and said valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022948144.3U CN213598091U (en) | 2020-12-11 | 2020-12-11 | Switching structure for fuel oil circuit of carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022948144.3U CN213598091U (en) | 2020-12-11 | 2020-12-11 | Switching structure for fuel oil circuit of carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213598091U true CN213598091U (en) | 2021-07-02 |
Family
ID=76597790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022948144.3U Active CN213598091U (en) | 2020-12-11 | 2020-12-11 | Switching structure for fuel oil circuit of carburetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213598091U (en) |
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2020
- 2020-12-11 CN CN202022948144.3U patent/CN213598091U/en active Active
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