CN213980995U

CN213980995U - Carburetor with adjustable structure

Info

Publication number: CN213980995U
Application number: CN202022424985.4U
Authority: CN
Inventors: 陈献祥
Original assignee: Jiangmen Hualian Industry Co ltd
Current assignee: Jiangmen Hualian Industry Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-08-17
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses a carburetor with an adjustable structure, which comprises a carburetor body, a rotary valve and an enrichment valve, wherein the carburetor body is provided with an accommodating cavity and is provided with an oil injection pipe; the rotary valve is provided with a mixing cavity and a valve rod, the valve rod is provided with an oil needle, one side of the oil injection pipe is provided with an oil injection port, the oil needle is inserted into the oil injection pipe and extends to the oil injection port, the end part of the valve rod is provided with a rocker arm, and the bottom of the rocker arm is provided with a clamping groove; enrichment valve be provided with the screw thread through-hole, enrichment valve is provided with the swing arm buckle, and screw thread through-hole threaded connection has the regulation nail, and the one end of adjusting the nail is pressed the swing arm buckle to the draw-in groove. After different carburetors are assembled, the adjusting nail is screwed in or unscrewed, namely, the size of the area of the oil spray opening capable of spraying oil is adjusted, the area of the oil spray opening capable of spraying oil of different carburetors is enabled to be closer, the difference of the air-fuel ratio of the mixed gas in the starting state is reduced, the air-fuel ratio of the mixed gas can reach the air-fuel ratio required by the engine better, and the starting of the engine is facilitated.

Description

Carburetor with adjustable structure

Technical Field

The utility model relates to the technical field of vehicles, in particular to carburetor with adjustable structure.

Background

When the carburetor is in a starting state, the enrichment valve is needed to enrich the mixed gas in the carburetor, the mixed gas with a proper air-fuel ratio is provided for the engine, and the engine is easy to start. However, due to the existence of workpiece tolerance and fit tolerance, when the engine is in a starting state, the area of the oil injection port shielded by the oil needle is different, namely the area of the oil injection port capable of injecting oil is different, the oil injection quantity is different, and if the enrichment valve of the same type is used, the difference of the air-fuel ratio of the mixed gas in the starting state is large, so that the starting of the engine is not facilitated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a carburetor with adjustable structure, the adjustable oil needle of carburetor with adjustable structure shields the area of nozzle to reduce the difference of the air-fuel ratio of the gas mixture under the start-up state, the engine start of being convenient for.

The utility model provides a carburetor with an adjustable structure, which comprises a carburetor body, a rotary valve and an enrichment valve, wherein the carburetor body is provided with a containing cavity, and the carburetor is provided with an oil injection pipe positioned in the containing cavity; the rotary valve is provided with a mixing cavity, the rotary valve is positioned in the accommodating cavity, the oil injection pipe is inserted into the mixing cavity, the rotary valve is provided with a valve rod, the valve rod is provided with an oil needle positioned in the mixing cavity, the length direction of the oil needle is parallel to the length direction of the valve rod, one side of the oil injection pipe is provided with an oil injection port, the oil needle is inserted into the oil injection pipe and extends to the oil injection port, the end part of the valve rod is provided with a rocker arm, and the bottom of the rocker arm is provided with a clamping groove; the enrichment valve is arranged on the carburetor body, a threaded through hole is formed in the middle of the enrichment valve, a swing arm buckle matched with the clamping groove is arranged at one end of the enrichment valve through hole, an adjusting nail is connected to the threaded through hole in a threaded mode, and one end of the adjusting nail presses the swing arm buckle to the clamping groove.

According to the utility model discloses carburetor with adjustable structure has following beneficial effect at least: through the twist or unscrew the adjusting screw, let the swing arm buckle jack-up rocking arm or let the rocking arm descend along with the swing arm buckle, then can change the oil pointer and insert the degree of depth of spouting the oil pipe, can adjust the area size that the nozzle can spout oil, therefore, after different carburettors assembled, can adjust the area size that the nozzle can spout oil through twisting or unscrewing the adjusting screw, the area that the nozzle can spout oil of different carburettors under the start-up state is close more, then the fuel injection quantity of different carburettors is more stable, reduce the air-fuel ratio difference of gas mixture under the start-up state, let the air-fuel ratio of gas mixture reach the air-fuel ratio that the engine required better, be favorable to the engine start-up.

According to some embodiments of the utility model, the carburetor body is provided with the valve gap, the middle part of valve gap is provided with rotates the hole, the valve rod is worn out rotate the hole just the rocking arm is located the valve gap deviates from one side of carburetor body, the enrichment valve sets up on the valve gap.

According to the utility model discloses a some embodiments, the valve gap is provided with the mount pad, the mount pad is provided with the mounting hole, the enrichment valve is located in the mounting hole.

According to the utility model discloses a some embodiments, the outside of enrichment valve is provided with the fixed slot, the length direction of fixed slot with the direction of mounting hole parallels, the mount pad is provided with and inserts the fixed pin of fixed slot.

According to the utility model discloses a some embodiments, the enrichment valve deviates from the one end of draw-in groove is provided with the spacing head, the external diameter of spacing head is greater than the internal diameter of mounting hole.

According to some embodiments of the utility model, the enrichment valve is provided with flat position, the mounting hole be provided with the flat position face of flat position adaptation.

According to some embodiments of the invention, the carburetor body is provided with an input port communicating with the fuel injection pipe.

According to some embodiments of the utility model, the inserting end of oil needle is provided with first chamfer.

According to some embodiments of the utility model, adjust the nail orientation the one end of draw-in groove is provided with the second chamfer.

According to some embodiments of the utility model, the adjusting screw deviates from the external diameter of the one end of draw-in groove is less than the internal diameter of screw thread through-hole.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded schematic view of an embodiment according to the present invention;

FIG. 2 is a cross-sectional schematic view of the carburetor body and rotary valve of FIG. 1.

Reference numerals:

the carburetor body 100, the housing chamber 110, the fuel injection pipe 120, the fuel injection port 130, the valve cover 140, the rotation hole 141, the mounting seat 142, the mounting hole 143, the fixing pin 144, the flat surface 145, the input port 150, the fuel injection valve, and the fuel injection valve,

The rotary valve 200, the mixing chamber 210, the valve stem 220, the oil needle 230, the first chamfer 231, the rocker arm 240, the clamping groove 241, the,

Enrichment valve 300, screw through hole 310, swing arm buckle 320, adjusting nail 330, second chamfer 321, fixed slot 340, limiting head 350, flat position 360.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 2, a carburetor with an adjustable structure includes a carburetor body 100, a rotary valve 200, and an enrichment valve 300, wherein the carburetor body 100 has an accommodating chamber 110, and the carburetor is provided with a fuel injection pipe 120 located in the accommodating chamber 110; the rotary valve 200 is provided with a mixing cavity 210, the rotary valve 200 is positioned in the accommodating cavity 110, the oil injection pipe 120 is inserted into the mixing cavity 210, the rotary valve 200 is provided with a valve rod 220, the valve rod 220 is provided with an oil needle 230 positioned in the mixing cavity 210, the length direction of the oil needle 230 and the length direction of the valve rod 220 are arranged, one side of the oil injection pipe 120 is provided with an oil injection port 130, the oil needle 230 is inserted into the oil injection pipe 120 and extends to the oil injection port 130, the end part of the valve rod 220 is provided with a rocker arm 240, and the bottom of the rocker arm 240; enrichment valve 300 sets up on carburetor body 100, and the middle part of enrichment valve 300 is provided with screw thread through-hole 310, and enrichment valve 300 is provided with the swing arm buckle 320 with draw-in groove 241 looks adaptation in the one end of screw thread through-hole 310, and screw thread through-hole 310 threaded connection has adjusting screw 330, and the one end of adjusting screw 330 is pressed swing arm buckle 320 to draw-in groove 241. The valve stem 220 of the rotary valve 200 is parallel to the longitudinal direction of the oil needle 230, and the valve stem 220, the oil needle 230, and the rocker arm 240 of the rotary valve 200 are connected by a screw to form a movable unit. The oil injection pipe 120 is provided with a socket, the oil needle 230 is inserted into the oil injection pipe 120 from the socket, the insertion end of the oil needle 230 extends to the oil injection port 130 on the side surface of the oil injection pipe 120, and the insertion end of the oil needle 230 can shield part or all of the oil injection port 130 so as to adjust the size of the oil injection port 130 and adjust the oil outlet quantity of the oil injection port 130. The swing arm buckle 320 of the enrichment valve 300 is buckled on the clamping groove 241, namely the top of the swing arm buckle 320 is propped against the bottom of the clamping groove 241, when the adjusting nail 330 is twisted to be close to the clamping groove 241, the top of the swing arm buckle 320 rises under the pushing of the insertion end of the adjusting nail 330, so that the height of the rocker arm 240 and the oil needle 230 is increased, the area of the oil nozzle 130 shielded by the insertion end of the oil needle 230 is reduced, and the area of the oil nozzle 130 can spray oil is increased. In a similar way, when the adjusting nail 330 is far away from the clamping groove 241, the top height of the swing arm buckle 320 gradually decreases along with the exit of the adjusting nail 330, so that the heights of the rocker arm 240 and the oil pointer 230 can be reduced, the insertion end of the oil pointer 230 can better shield the oil injection port 130, and the area of the oil injection port 130 capable of injecting oil is reduced. The area of the oil injection port 130 can inject oil can be adjusted by screwing or unscrewing the adjusting nail 330, so that after the carburetor is assembled, the area of the oil injection port 130 can inject oil can be adjusted by screwing or unscrewing the adjusting nail 330, the area of the oil injection port 130 of the carburetor in a starting state can inject oil is closer, the oil injection amount is more stable, the air-fuel ratio difference of mixed gas in the starting state is reduced, the air-fuel ratio of the mixed gas can better reach the air-fuel ratio required by the engine, and the starting of the engine is facilitated.

Referring to fig. 1 to 2, in some embodiments of the present invention, the carburetor body 100 is provided with a valve cover 140, the middle portion of the valve cover 140 is provided with a rotation hole 141, the valve rod 220 penetrates through the rotation hole 141 and the rocker arm 240 is located on one side of the valve cover 140 facing away from the carburetor body 100, and the enrichment valve 300 is disposed on the valve cover 140. The cap 140 is fixed to the carburetor body 100 by screws, the pivot hole 141 is provided for the valve stem 220 to pass through, and the rocker arm 240 is located at one end of the valve stem 220 where the valve stem 220 passes through the pivot hole 141. The valve cover 140 can fix the rotary valve to the carburetor body 100 to prevent the rotary valve from falling off. Enrichment valve 300 is installed on valve gap 140, can let enrichment valve 300 jack-up rocking arm 240 better, is convenient for adjust the height of oil needle 230, and wherein, valve rod 220 can go up and down along rotating hole 141 to let swing arm buckle 320 adjust the height of oil needle 230, conveniently adjust the area that nozzle 130 can the oil spout.

Referring to fig. 1-2, in some embodiments of the present disclosure, the bonnet 140 is provided with a mounting seat 142, the mounting seat 142 is provided with a mounting hole 143, and the enrichment valve 300 is located within the mounting hole 143. Mounting seat 142 is used to mount enrichment valve 300, wherein mounting seat 142 encases enrichment valve 300, allowing enrichment valve 300 to be better secured to bonnet 140.

Referring to fig. 1 to 2, in some embodiments of the present invention, a fixing groove 340 is provided at an outer side of the enrichment valve 300, a length direction of the fixing groove 340 is parallel to a direction of the mounting hole 143, and the mounting seat 142 is provided with a fixing pin 144 inserted into the fixing groove 340. The fixing pin 144 is used for fixing the position of the enrichment valve 300, the enrichment valve 300 is prevented from falling from the mounting hole 143, the end portion of the fixing pin 144 is smaller than the length of the fixing groove 340, the enrichment valve 300 can move along the fixing groove 340, the fixing pin 144 can be conveniently installed, and the fixing pin 144 can be conveniently inserted into the fixing groove 340.

Referring to fig. 1-2, in some embodiments of the present disclosure, an end of the enrichment valve 300 away from the clamping groove 241 is provided with a stopper 350, and an outer diameter of the stopper 350 is greater than an inner diameter of the mounting hole 143. Limiting head 350 can prevent enrichment valve 300 from excessively extending into mounting hole 143, and the installation is avoided being out of position, and the assembly is convenient.

Referring to fig. 1-2, in some embodiments of the present disclosure, enrichment valve 300 is provided with flat 360, and mounting hole 143 is provided with flat surface 145 that is adapted to flat 360. Flat 360 can let enrichment valve 300 fix a position better and insert in mounting hole 143, but also can prevent enrichment valve 300 from rotating, be convenient for install enrichment valve 300, let swing arm buckle 320 jack-up draw-in groove 241 on rocking arm 240 better moreover.

Referring to fig. 1-2, in some embodiments of the invention, the carburetor body 100 is provided with an input port 150 in communication with the fuel injector 120. The input port 150 is used to connect to a fuel tank from which gasoline is input to the carburetor for start-up.

Referring to fig. 1 to 2, in some embodiments of the present invention, the insertion end of the oil needle 230 is provided with a first chamfer 231, so that the oil needle 230 can be inserted into the oil injection pipe 120 more easily, which is convenient for assembly.

Referring to fig. 1 to 2, in some embodiments of the present invention, the adjusting nail 330 is provided with a second chamfer 321 towards one end of the slot 241, so that the adjusting nail 330 can better abut against the swing arm buckle 320, the swing arm buckle 320 is prevented from being cut off due to the sharpness of the end of the adjusting nail 330, and the contact area between the adjusting nail 330 and the swing arm buckle 320 is larger, so that the adjusting nail 330 can push the swing arm buckle 320.

Referring to fig. 1-2, in some embodiments of the present invention, the outer diameter of the end of the adjusting nail 330 facing away from the clamping groove 241 is smaller than the inner diameter of the threaded through hole 310. That is, the adjusting nail 330 can be entirely inserted into the threaded through hole 310, so as to shield the adjusting nail 330, thereby being more beautiful.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do 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.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A carburetor of adjustable construction, comprising:

a carburetor body (100) having a receiving chamber (110), the carburetor being provided with a fuel injection pipe (120) located in the receiving chamber (110);

a rotary valve (200) having a mixing chamber (210), the rotary valve (200) being located in the accommodating chamber (110), the oil injection pipe (120) being inserted into the mixing chamber (210), the rotary valve (200) having a valve rod (220), the valve rod (220) being provided with an oil needle (230) located in the mixing chamber (210), a length direction of the oil needle (230) being parallel to a length direction of the valve rod (220), one side of the oil injection pipe (120) being provided with an oil injection port (130), the oil needle (230) being inserted into the oil injection pipe (120) and extending to the oil injection port (130), an end of the valve rod (220) being provided with a rocker arm (240), a bottom of the rocker arm (240) being provided with a clamping groove (241);

the enrichment valve (300) is arranged on the carburetor body (100), a threaded through hole (310) is formed in the middle of the enrichment valve (300), a swing arm buckle (320) matched with the clamping groove (241) is arranged at one end of the threaded through hole (310) of the enrichment valve (300), an adjusting nail (330) is connected to the threaded through hole (310) in a threaded mode, and one end of the adjusting nail (330) presses the swing arm buckle (320) to the clamping groove (241).

2. A carburetor according to claim 1, wherein: the carburetor body (100) is provided with a valve cover (140), the middle of the valve cover (140) is provided with a rotating hole (141), the valve rod (220) penetrates through the rotating hole (141), the rocker arm (240) is located on one side, away from the carburetor body (100), of the valve cover (140), and the enrichment valve (300) is arranged on the valve cover (140).

3. A carburetor according to claim 2, wherein: the valve cover (140) is provided with a mounting seat (142), the mounting seat (142) is provided with a mounting hole (143), and the enrichment valve (300) is located in the mounting hole (143).

4. A carburetor according to claim 3, wherein: the outer side of the enrichment valve (300) is provided with a fixing groove (340), the length direction of the fixing groove (340) is parallel to the direction of the mounting hole (143), and the mounting seat (142) is provided with a fixing pin (144) inserted into the fixing groove (340).

5. A carburetor according to claim 4, wherein: one end of the enrichment valve (300) departing from the clamping groove (241) is provided with a limiting head (350), and the outer diameter of the limiting head (350) is larger than the inner diameter of the mounting hole (143).

6. A carburetor according to claim 3, wherein: enrichment valve (300) are provided with flat position (360), mounting hole (143) be provided with flat position face (145) of flat position (360) looks adaptation.

7. A carburetor according to claim 1, wherein: the carburetor body (100) is provided with an input port (150) communicated with the fuel injection pipe (120).

8. A carburetor according to claim 1, wherein: the inserting end of the oil needle (230) is provided with a first chamfer (231).

9. A carburetor according to claim 1, wherein: one end, facing the clamping groove (241), of the adjusting nail (330) is provided with a second chamfer (321).

10. A carburetor according to claim 1, wherein: the outer diameter of one end, facing away from the clamping groove (241), of the adjusting nail (330) is smaller than the inner diameter of the threaded through hole (310).