CN212838109U - Carburetor - Google Patents

Abstract

The utility model relates to a carburetor contains mixing chamber and float chamber, and the mixing chamber contains choke, main spray pipe, choke valve and air throttle, and the float chamber contains float chamber body, float subassembly and float needle valve, and threaded connection is passed through to the lower extreme of mixing chamber and float chamber upper end, and the side lower part of float chamber body is equipped with the oil drain hole, is equipped with the oil drain bolt on this oil drain hole, be equipped with the oil duct on the mixing chamber, the last mouth of this oil duct is located the side of mixing chamber, and the end opening of this oil duct is located the bottom surface of mixing chamber, and the end opening of this oil duct is equipped with oil pipe, and the end opening is located the interior bottom of float chamber body, and the oil of the interior bottom of float chamber body can get into in the lower port of oil pipe, the end opening of oil duct is equipped with the head plug. The carburetor can not only facilitate the removal of gasoline and/or impurity mixed liquid at the bottom of the float chamber body, but also avoid the risk of gasoline leakage.

Description

Carburetor

Technical Field

The utility model relates to a small gasoline engine especially relates to a carburetor for small gasoline engine.

Background

A small gasoline engine comprises a carburetor which mainly comprises a mixing chamber and a float chamber. The mixing chamber mainly comprises a throat pipe, a main spray pipe, a choke valve, a throttle valve and the like. The mixing chamber is used for mixing and atomizing a certain amount of gasoline and air according to the working requirement of the gasoline engine. The main parts of the float chamber are composed of a float chamber body, a float component, a float needle valve and other parts, and the main parts are used for storing gasoline and automatically keeping the oil quantity in the carburetor according with the specified requirements all the time. The lower end of the mixing chamber is connected with the upper end of the float chamber through threads. The side lower part of float chamber body is equipped with the oil drain, is equipped with the oil drain bolt on this oil drain, through this oil drain, can drain this internal petrol of float chamber and/or impurity mixed liquid on the one hand, and on the other hand gasoline engine drains this internal petrol of float chamber through the oil drain when not using for a long time. Because the oil drain hole is positioned at the lateral lower part of the float chamber body, impurities and gasoline positioned at the bottom of the float chamber body cannot be drained. Simultaneously, because the oil drain bolt constitutes an angle with the vertical direction, when the oil drain bolt is adorned, hardly aim at the oil drain hole with the oil drain bolt, consequently cause the wearing and tearing of oil drain bolt external screw thread and oil drain hole internal thread when the setting to there is the risk of petrol seepage.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a carburetor, this carburetor can not only be convenient for clear away the petrol and/or the impurity mixed liquid of float chamber body bottom, can avoid the risk of petrol seepage moreover.

In order to solve the technical problem, the utility model relates to a carburetor contains mixing chamber and float chamber, and the mixing chamber contains choke, main spray, choke valve and air throttle, and the float chamber contains float chamber body, float subassembly and float needle valve, and threaded connection is passed through with float chamber upper end to the lower extreme of mixing chamber, and the side lower part of float chamber body is equipped with the oil drain hole, is equipped with the oil drain bolt on this oil drain hole, be equipped with the oil duct on the mixing chamber, the last mouth of this oil duct is located the side of mixing chamber, and the end opening of this oil duct is located the bottom surface of mixing chamber, and the end opening of this oil duct is equipped with oil pipe, and oil pipe's lower port is located the interior bottom of float chamber body, and the oil of the interior bottom of float chamber body can get into in oil pipe's the lower port, the end opening of oil duct is equipped with the head.

The lower end part of the oil pipe is bent, a plane formed by the lower port of the oil pipe forms an angle with the vertical plane, and the lowest end of the lower port of the oil pipe is contacted with the inner bottom of the float chamber body.

And the plane formed by the lower port of the oil pipe is parallel to the vertical plane.

The mixing chamber and the oil pipe are of an integral structure.

In the carburetor, the oil passage is arranged on the mixing chamber of the carburetor, the lower port of the oil passage is provided with the oil pipe, the lower port of the oil pipe is positioned at the inner bottom of the float chamber body, the oil at the inner bottom of the float chamber body can enter the lower port of the oil pipe, and the mixed liquid of gasoline and/or impurities in the float chamber body can be directly pumped out through the oil pipe and the oil passage by the oil pumping device, so that the carburetor is convenient and quick. Because the gasoline and/or impurity mixed liquid in the float chamber body is directly pumped completely through the oil pumping device, the gasoline leakage risk caused by abrasion of the external thread of the oil drain bolt and the internal thread of the oil drain hole due to the disassembly and assembly of the oil drain bolt in the prior art is avoided.

Drawings

FIG. 1 is a schematic view of the overall structure of a carburetor of the present invention;

fig. 2 is a schematic view of a carburetor according to the present invention in a partial cross-section.

In the figure, 1 is an oil drainage bolt, 2 is an upper opening of an oil duct, 3 is a mixing chamber, 4 is a throat, 5 is a float chamber, 6 is an oil pipe, and 7 is the oil duct.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and 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 therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1-2, the present invention provides an embodiment of a carburetor that includes a mixing chamber 3 and a float chamber 5. The mixing chamber 3 contains a throat 4, a main nozzle, a choke valve and a throttle. The float chamber 5 contains a float chamber body, a float assembly and a float needle valve. The lower end of the mixing chamber 3 is connected with the upper end of the float chamber 5 through screw threads. The side lower part of the float chamber body 5 is provided with an oil drain hole, and an oil drain bolt 1 is arranged on the oil drain hole. The mixing chamber 3 is provided with an oil channel 7, an upper port 2 of the oil channel is positioned on the side surface of the mixing chamber 3, a lower port of the oil channel 7 is positioned on the bottom surface of the mixing chamber 3, an oil pipe 6 is arranged at the lower port of the oil channel 7, a lower port of the oil pipe 6 is positioned at the inner bottom of the float chamber body 5, oil at the inner bottom of the float chamber body 5 can enter the lower port of the oil pipe 6, and the upper port 2 of the oil channel is provided with a head plug which is not shown in the figure.

In order to further facilitate the clean pumping of the gasoline and/or impurity mixed liquid at the bottom in the float chamber body 5, the lower end part of the oil pipe 6 is bent, the plane formed by the lower port of the oil pipe 6 forms an angle with the vertical plane, and the lowest end of the lower port of the oil pipe 6 is in contact with the inner bottom of the float chamber body 5.

In order to facilitate the manufacture and further facilitate the clean pumping of the gasoline and/or impurity mixed liquid at the bottom in the float chamber body 5, the plane formed by the lower port of the oil pipe 6 is parallel to the vertical plane.

In order to reduce the manufacturing cost, the mixing chamber 3 and the oil pipe 6 are of an integral structure.

In the carburetor, when gasoline and/or impurity mixed liquid at the bottom of the float chamber body 5 needs to be cleaned, the head plug is opened, the gasoline and/or impurity mixed liquid in the float chamber is directly pumped out through the oil pumping device, and then the head plug is arranged on the upper opening 2 of the oil passage. Because the mixing chamber 3 of the carburetor is provided with the oil duct 7, the lower port of the oil duct 7 is provided with the oil pipe 6, the lower port of the oil pipe 6 is positioned at the inner bottom of the float chamber body 5, the oil at the inner bottom of the float chamber body 5 can enter the lower port of the oil pipe 6, and the mixed liquid of the gasoline and/or the impurities in the float chamber body 5 can be directly pumped out through the oil pipe 6 and the oil duct 7 by the oil pumping device, the carburetor is convenient and quick. Because the gasoline and/or impurity mixed liquid in the float chamber body 5 is directly pumped out completely through the oil pumping device, the gasoline leakage risk caused by the abrasion of the external thread of the oil drain bolt 1 and the internal thread of the oil drain hole due to the disassembly and assembly of the oil drain bolt 1 in the prior art is avoided.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (4)

1. A carburetor comprises a mixing chamber and a float chamber, wherein the mixing chamber comprises a throat pipe, a main spray pipe, a choke valve and a throttle valve, the float chamber comprises a float chamber body, a float assembly and a float needle valve, the lower end of the mixing chamber is in threaded connection with the upper end of the float chamber, an oil drain hole is formed in the side lower portion of the float chamber body, and an oil drain bolt is mounted on the oil drain hole, and the carburetor is characterized in that: the mixing chamber is provided with an oil duct, an upper opening of the oil duct is positioned on the side surface of the mixing chamber, a lower opening of the oil duct is positioned on the bottom surface of the mixing chamber, an oil pipe is arranged at the lower opening of the oil duct, a lower opening of the oil pipe is positioned at the inner bottom of the float chamber body, oil at the inner bottom of the float chamber body can enter the lower opening of the oil pipe, and a head plug is arranged at the upper opening of the oil duct.

2. A carburettor as claimed in claim 1, wherein: the lower end part of the oil pipe is bent, a plane formed by the lower port of the oil pipe forms an angle with the vertical plane, and the lowest end of the lower port of the oil pipe is contacted with the inner bottom of the float chamber body.

3. A carburettor as claimed in claim 2 wherein: and the plane formed by the lower port of the oil pipe is parallel to the vertical plane.

4. A carburettor as claimed in claim 1, wherein: the mixing chamber and the oil pipe are of an integral structure.

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