CN107795411A - It is a kind of can quickly starting rotary valve carburetor - Google Patents

Abstract

The invention discloses a rotary valve carburetor capable of quick start, which comprises a carburetor body, a fixing frame and a starting device, the fixing frame is detachably arranged on the carburetor body, and the starting device includes a Axis rotation to open or close the rotary valve of the mixing channel, the rotary valve is provided with a cylindrical cavity, and a ventilation hole is also provided on the outer wall of the rotary valve perpendicular to the cylindrical cavity, and the rotary valve is provided with a The oil needle of the rotary valve is concentric. The upper part of the rotary valve is connected with a rocker arm that can drive it to lift. The rotary valve is connected with the rocker arm through the through hole in the middle of the fixed frame. A return spring is arranged between the rotary valve and the fixed frame. The invention can drive the rotary valve to lift by the rocker arm, move the oil needle to change the size of the fuel nozzle of the main nozzle, increase the fuel intake, and increase the intake volume through the vent hole. The process is simple and easy to use.

Description

A Quick Start Rotary Valve Carburetor

technical field

The invention relates to a carburetor, in particular to a quick start rotary valve carburetor.

Background technique

The carburetor is a mechanical device that mixes a certain proportion of gasoline with air under the vacuum generated by the engine. Generally, a rotary valve carburetor has a fuel and air mixing channel, and a cylindrical cavity that is transverse to the mixing channel moves axially inside the carburetor body, and the flow rate of the mixed gas passing through the cavity can be adjusted by the rotation of the rotary valve , the cylindrical cavity is also installed with an oil needle fixed on the rotary valve concentric with the rotary valve. The oil needle extends into the main fuel nozzle installed on the main body concentric with the rotary valve. The through hole of the cavity, thus allowing fuel to flow from the metering chamber communicating with the main nozzle into the mixing channel. The axial movement of the rotary valve can move the oil needle relative to the main nozzle, thereby changing the size of the fuel nozzle of the main nozzle, and controlling the fuel flowing into the cylindrical cavity and the mixing channel. To adjust the amount of air and gasoline entering the carburetor at the same time, the carburetor needs to be rotated and moved axially at the same time. The movement process is complicated and inconvenient to use.

Contents of the invention

The present invention aims to solve one of the above-mentioned technical problems in the related art at least to a certain extent. Therefore, the present invention proposes a rotary valve carburetor that is easy to operate and can simultaneously adjust the amount of air and gasoline entering the carburetor in one step.

The technical solution adopted by the present invention to solve its technical problems is:

A rotary valve carburetor that can be quickly started, comprising a carburetor body, a fixing frame, and a starting device. Or close the rotary valve of the mixing channel, the rotary valve is provided with a cylindrical cavity, the rotary valve is also provided with a vent hole on the outer wall perpendicular to the cylindrical cavity, and the rotary valve is provided with a concentric The oil needle is connected with a rocking arm that can drive it to lift on the top of the rotary valve, and the rotary valve and the rocking arm pass through the through hole in the middle of the fixed frame to connect, and a return spring is arranged between the rotary valve and the fixed frame.

As an improvement of the above technical solution, the vent hole is located at the bottom of the rotary valve and runs through the rotary valve.

As a further improvement of the above technical solution, a protruding limiting portion is provided on the rocker arm, and a retractable gear lever is provided on the fixing frame corresponding to the limiting portion.

Further, the gear bar is a screw, and the fixing frame is provided with a threaded seat that cooperates with the screw.

Further, a rubber pad is provided between the rocker arm and the fixing frame.

Further, the top of the rocker arm is provided with a grip portion for easy gripping.

The beneficial effects of the present invention are: the rotary valve carburetor that can be quickly started is provided with a vent hole on the outer wall of the rotary valve perpendicular to the cylindrical cavity, the rocker arm can drive the rotary valve to lift, and the oil needle can be moved to change the main The size of the fuel nozzle of the nozzle increases the fuel intake and at the same time increases the intake through the vent hole. The process is simple and easy to use.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is an exploded view of an embodiment of the present invention;

Fig. 3 is the left side view of the rotary valve of the embodiment of the present invention;

Fig. 4 is a schematic diagram of a three-dimensional structure of a rotary valve according to an embodiment of the present invention.

Detailed ways

Referring to Figures 1 to 4, a rotary valve carburetor that can be quickly started according to the present invention includes a carburetor body 1, a fixing frame 2, and a starting device 3, and the fixing frame 2 is detachably arranged on the carburetor body 1, the starting device 3 includes a rotary valve 4 that can rotate around the longitudinal axis to open or close the mixing channel. A cylindrical cavity 41 is opened on the rotary valve 4, and the cylindrical cavity 41 is connected to the rotary valve 4 The vertical outer wall is also provided with a ventilation hole 42. The rotary valve 4 is provided with an oil needle 5 concentric with the rotary valve 4. The upper part of the rotary valve 4 is connected with a rocker arm 6 that can drive it to lift. The rotary valve 4 is connected to the rocker. The arm 6 is connected through the through hole 21 in the middle part of the fixed frame 2, and a return spring (not shown in the figure) is arranged between the rotary valve 4 and the fixed frame 2. The rotary valve carburetor that can be started quickly in the rotary valve Ventilation holes 42 are arranged on the outer wall perpendicular to the cylindrical cavity 41 on the top 4, and the rocker arm 6 can drive the rotary valve 4 to lift, and the oil needle 5 can be moved to change the size of the fuel nozzle of the main nozzle. The ventilation holes 42 increase the air intake, the process is simple, and the use is convenient, and the return spring can realize the automatic and quick reset of the rocker arm 6, which is easy to use.

In this embodiment, preferably, the vent hole 42 is located at the bottom of the rotary valve 4 and runs through the rotary valve 4, and the vent hole 42 will not be exposed until the rotary valve 4 is lifted to a certain extent, so as to ensure the normal use of the carburetor.

In this embodiment, preferably, the rocker arm 6 is provided with a protruding limiting portion 61, and the fixed frame 2 is provided with a retractable gear lever 22 corresponding to the limiting portion 61, and the limiting portion 61 cooperates with The gear lever 22 can block the rocker arm 6 so that it cannot be reset, and maintains the lifting state, so as to continuously adjust the amount of air and gasoline entering the carburetor as required.

In this embodiment, preferably, the gear rod 22 is a screw, and the fixing frame 2 is provided with a threaded seat 23 that cooperates with the screw, which is simple to manufacture, easy to use, and low in cost.

In this embodiment, preferably, a rubber pad is provided between the rocker arm and the fixing frame, which can reduce the abrasion of the rocker arm 6 when it is reset, and make it more durable.

In this embodiment, preferably, the top of the rocker arm is provided with a gripping portion 62 for easy gripping.

The above specific structure and size data are specific descriptions of the preferred embodiments of the present invention, but the invention is not limited to the embodiments, and those skilled in the art can also make Various equivalent modifications or replacements are included within the scope defined by the claims of the present application.

Claims (6)

1. A rotary valve carburetor that can be quickly started is characterized in that: it includes a carburetor body, a fixing frame, and a starting device, the fixing frame is detachably arranged on the carburetor body, and the starting device includes a Rotate around the longitudinal axis to open or close the rotary valve of the mixing channel. A cylindrical cavity is provided on the rotary valve, and a ventilation hole is also provided on the outer wall perpendicular to the cylindrical cavity on the rotary valve. There is an oil needle concentric with the rotary valve, the upper part of the rotary valve is connected with a rocker arm that can drive it to lift, the rotary valve and the rocker arm are connected through the through hole in the middle of the fixed frame, and a return spring is arranged between the rotary valve and the fixed frame . 2 . The quick-start rotary valve carburetor according to claim 1 , wherein the vent hole is located at the bottom of the rotary valve and runs through the rotary valve. 3 . 3. A quick-start rotary valve carburetor according to claim 1, characterized in that: the rocker arm is provided with a protruding stopper, and the fixed frame is provided with a corresponding stopper. Retractable gear lever. 4 . The quick-start rotary valve carburetor according to claim 3 , wherein the shift lever is a screw, and the fixing frame is provided with a threaded seat that cooperates with the screw. 5 . The quick start rotary valve carburetor according to claim 1 , wherein a rubber pad is arranged between the rocker arm and the fixing frame. 5 . 6. The quick-start rotary valve carburetor according to claim 1, characterized in that: the top of the rocker arm is provided with a gripping portion for easy gripping.