CN221277886U - Mixed fuel and gasoline automatic switching carburetor - Google Patents
Mixed fuel and gasoline automatic switching carburetor Download PDFInfo
- Publication number
- CN221277886U CN221277886U CN202323331942.1U CN202323331942U CN221277886U CN 221277886 U CN221277886 U CN 221277886U CN 202323331942 U CN202323331942 U CN 202323331942U CN 221277886 U CN221277886 U CN 221277886U
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- CN
- China
- Prior art keywords
- carburetor
- fuel
- communicated
- pressure reducing
- secondary pressure
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- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 239000003502 gasoline Substances 0.000 title claims abstract description 12
- 239000000295 fuel oil Substances 0.000 claims abstract description 11
- 239000003921 oil Substances 0.000 claims abstract description 9
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 description 18
- 239000007789 gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Abstract
The utility model discloses an automatic switching carburetor for mixed fuel and gasoline, which comprises a carburetor body, wherein the carburetor body is provided with a throat, a float chamber, an oil supply channel, an air supply channel and a main measuring hole communicated with the throat, the oil supply channel is communicated with the float chamber, a fuel oil input hole communicated with the float chamber is arranged below the main measuring hole, a needle valve capable of blocking the fuel oil input hole is arranged below the carburetor body, the automatic switching carburetor also comprises an air supply pipeline and a secondary pressure reducing valve, the output end of the air supply pipeline is connected to the secondary pressure reducing valve, two air outlets are arranged on the secondary pressure reducing valve, one air outlet is communicated with the air supply channel, the other air outlet is connected with the needle valve, and the needle valve is driven to open the fuel oil input hole after the air pressure of the air supply pipeline is reduced. Therefore, the engine is automatically converted into gasoline for combustion, the engine is restarted after stopping and flameout is not needed, and the structure is reliable.
Description
Technical Field
The utility model relates to the field of carburettors, in particular to an automatic switching carburettor for mixed fuel and gasoline.
Background
The carburetor using the mixed fuel can meet the fuel switching problem in the use process, and generally, the carburetor needs to be shut down, flameout and restarted, and the carburetor taking gasoline and fuel as fuel has a gasoline supply channel and a fuel gas supply channel in the structure, and the two channels cannot be used simultaneously.
Disclosure of utility model
In order to solve the above problems, the present utility model provides an automatic switching carburetor for mixed fuel and gasoline, which aims to improve fuel switching efficiency under the condition of ensuring reliable structure.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the automatic switching carburetor for mixed fuel and gasoline includes carburetor body with throat, float chamber, oil supply channel, air supply channel and main metering orifice communicated with throat, fuel inlet orifice communicated with float chamber and needle valve below the main metering orifice for blocking the fuel inlet orifice, air supply pipeline and secondary pressure reducing valve.
The needle valve comprises a shell arranged on the carburetor body, a diaphragm with a retractable middle part is arranged in the shell, a valve needle is connected to the middle part of the diaphragm, the diaphragm and the inner cavity of the shell are sealed to form a pressure cavity, and the pressure cavity is communicated with the secondary pressure reducing valve.
The beneficial effects of the utility model are as follows: when the carburetor is connected with fuel gas, the fuel gas can have certain pressure, and enters the needle valve and the air supply channel through the secondary pressure reducing valve to push the needle valve to move upwards to close the fuel oil input hole and close the oil supply channel, so that the fuel gas is ensured to be preferentially used.
The utility model is further described below with reference to the drawings and detailed description.
Drawings
FIG. 1 is a perspective view of an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of an embodiment of the present utility model;
Fig. 3 is an enlarged view of a in fig. 2.
Detailed Description
The present utility model is described in detail below by way of examples only for further explanation of the present utility model and is not to be construed as limiting the scope of the present utility model.
As shown in fig. 1-3, the embodiment discloses an automatic switching carburetor for mixed fuel and gasoline, which comprises a carburetor body 1, wherein the carburetor body 1 is provided with a throat 11, a float chamber 12, an oil supply channel 13, an air supply channel 14 and a main metering orifice 15 leading to the throat 11, the oil supply channel 13 is communicated with the float chamber 12, a fuel input orifice 2 communicated with the float chamber 12 is arranged below the main metering orifice 15, a needle valve 3 capable of blocking the fuel input orifice 2 is arranged below the carburetor body 1, the automatic switching carburetor also comprises an air supply pipeline and a secondary pressure reducing valve (not shown in the drawing), the output end of the air supply pipeline is connected to the secondary pressure reducing valve, two air outlets are arranged on the secondary pressure reducing valve, one air outlet is communicated with the air supply channel 14, the other air outlet is connected with the needle valve 3, and the air pressure of the air supply pipeline is reduced to drive the needle valve 3 to open the fuel input orifice 2.
The needle valve 3 comprises a shell 31 arranged on the carburetor body 1, a diaphragm 32 with a retractable middle part is arranged in the shell 31, a needle 33 is connected to the middle part of the diaphragm 32, the diaphragm 32 and the inner cavity of the shell 31 are sealed to form a pressure cavity 33, the pressure cavity 33 is communicated with a secondary pressure reducing valve, when the secondary pressure valve has enough fuel gas pressure, the gas pressure of the fuel gas overcomes the elasticity of the middle part of the diaphragm 32, the middle part of the diaphragm 32 bulges upwards and drives the needle 33 in the needle valve 3 to extend into the main measuring hole 15 to block the fuel input hole 2, thus only fuel gas can be supplied, when the gas pressure is insufficient, the needle 33 is retracted to open the fuel input hole 2 under the driving of the resilience force of the diaphragm 32, and the fuel gas pressure can be automatically switched to fuel gas supply after enough fuel gas pressure, and the structure can supply fuel gas preferentially.
By adopting the technical scheme, when the carburetor is connected with fuel gas, the fuel gas can have certain pressure in the use process of the engine, the fuel gas enters the needle valve 3 and the air supply channel 14 through the secondary pressure reducing valve, the needle valve 33 is pushed to move upwards, the fuel oil input hole 2 is closed, the oil supply channel is closed, the fuel gas is ensured to be used preferentially, when the fuel gas is insufficient, the fuel gas pressure can not push the membrane 32 in the needle valve 3 upwards, the needle valve 33 is retracted, the fuel oil enters the main metering orifice 15 through the fuel oil input hole 2 for supplying the fuel, thus the fuel gas is automatically converted into gasoline for combustion, the engine is restarted after stopping and flameout, and the structure is reliable.
While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The utility model provides a mixed fuel and petrol automatic switch carburetor, includes the carburetor body, has choke, float chamber, oil feed passageway, air feed passageway and with the main measuring hole that leads to the choke on the carburetor body, oil feed passageway communicates with each other its characterized in that with the float chamber: the fuel oil inlet hole communicated with the fuel bowl is arranged below the main measuring hole, the needle valve capable of blocking the fuel oil inlet hole is arranged below the carburetor body, the fuel oil carburetor further comprises a gas supply pipeline and a secondary pressure reducing valve, the output end of the gas supply pipeline is connected to the secondary pressure reducing valve, two gas outlets are arranged on the secondary pressure reducing valve, one gas outlet is communicated with the gas supply channel, the other gas outlet is connected with the needle valve, and the needle valve is driven to open the fuel oil inlet hole after the gas pressure of the gas supply pipeline is reduced.
2. The automatic switching carburetor for mixed fuel and gasoline according to claim 1, wherein: the needle valve comprises a shell arranged on the carburetor body, a diaphragm with a retractable middle part is arranged in the shell, a valve needle is connected to the middle part of the diaphragm, the diaphragm and the inner cavity of the shell are sealed to form a pressure cavity, and the pressure cavity is communicated with the secondary pressure reducing valve.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221277886U true CN221277886U (en) | 2024-07-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |