CN107859574B - Push type rotary valve carburetor - Google Patents
Push type rotary valve carburetor Download PDFInfo
- Publication number
- CN107859574B CN107859574B CN201711139407.2A CN201711139407A CN107859574B CN 107859574 B CN107859574 B CN 107859574B CN 201711139407 A CN201711139407 A CN 201711139407A CN 107859574 B CN107859574 B CN 107859574B
- Authority
- CN
- China
- Prior art keywords
- rotary valve
- fixing frame
- rocker arm
- carburetor
- threaded hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
- F02M9/08—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having throttling valves rotatably mounted in the passage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M9/00—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position
- F02M9/12—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having other specific means for controlling the passage, or for varying cross-sectional area, of fuel-air mixing chambers
- F02M9/125—Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type; Carburettors having fuel-air mixing chambers of variable shape or position having other specific means for controlling the passage, or for varying cross-sectional area, of fuel-air mixing chambers specially shaped throttle valves not otherwise covered in groups F02M9/121 - F02M9/124
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
The invention discloses a push type rotary valve carburetor, which comprises a carburetor body, a fixing frame and a starting device, wherein the fixing frame is detachably arranged on the carburetor body, the starting device comprises a rotary valve which can rotate around a longitudinal axis to open or close a mixing channel, a needle which is concentric with the rotary valve is arranged in the rotary valve, a rocker arm which can drive the rotary valve to rotate and lift is connected with the upper part of the rotary valve, the rotary valve is connected with a threaded hole which penetrates through the middle part of the fixing frame, threads corresponding to the threaded hole are arranged at the connecting part, a button is inserted on one side of the rocker arm, and an arc-shaped spiral groove with gradually increased depth is arranged on the fixing frame corresponding to the button position and takes the threaded hole as a circle center.
Description
Technical Field
The invention relates to a carburetor, in particular to a push rotary valve carburetor.
Background
The carburetor is a mechanical device for mixing a certain proportion of gasoline with air under the vacuum effect generated by the operation of an engine. In general, rotary valve carburettors have a fuel, air mixing passage, a cylindrical chamber transverse to the mixing passage moving axially within the carburettor body, the speed of flow of the mixture through this chamber being adjustable by rotation of the rotary valve, a needle mounted on the rotary valve concentric with the rotary valve, the needle extending into a main nozzle mounted on the body concentric with the rotary valve, the main nozzle being provided with a through hole opening into the cylindrical chamber, thereby allowing fuel to flow from a metering chamber communicating with the main nozzle into the mixing passage. The rotary valve moves axially to move the oil needle relative to the main nozzle, thereby changing the size of the oil jet of the main nozzle and controlling the oil flowing into the cylindrical cavity and the mixing channel. The existing rotary valve carburetor is generally not provided with a starting device, and the engine runs at an idling state in a rich state, so that the oil consumption is large, the emission is poor and the service life is short; in the starting process of an engine using a rotary valve carburetor, the concentration of mixed gas entering the engine is increased by closing a choke valve to be half-opened and reducing the air quantity, so that the engine is smoothly started, the operation steps are complex, and errors are easy to occur.
Disclosure of Invention
The present invention aims to solve at least one of the above-mentioned technical problems in the related art to some extent. Therefore, the invention provides the push type rotary valve carburetor which is simple to operate, can rapidly provide more and more concentrated fuel and air mixture so as to start an engine, improve the engine performance and reduce pollution emission.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a push type rotary valve carburetor, includes carburetor body, mount, starting drive, the mount can be dismantled and set up on the carburetor body, starting drive is including rotating around the longitudinal axis in order to open or close the rotary valve of mixing channel, be provided with in the rotary valve with the concentric oil needle of rotary valve, rotary valve upper portion is connected with the rocking arm that can drive its rotation and promote, the rotary valve with the rocking arm passes the screw hole in mount middle part and is connected, the junction be equipped with the screw thread that the screw hole corresponds, rocking arm one side alternates and is provided with the button, corresponds on the mount the button position is provided with the degree of depth and increases gradually, uses the curved helicla flute of screw hole as the centre of a circle.
As an improvement of the technical scheme, a first reset spring is arranged between the rotary valve and the fixing frame, and a second reset spring is arranged between the button and the rocker arm.
As a further improvement of the technical scheme, the fixing frame is provided with a through hole at the tail end of the spiral groove, and the tail end of the button is provided with a clamping groove which can be clamped with the spiral groove.
Further, the rocker arm is also provided with a protruding limiting part, and the fixing frame is provided with a telescopic baffle rod corresponding to the limiting part.
Further, the baffle rod is a screw, and a thread seat matched with the screw is arranged on the fixing frame.
Further, the bottom of the rocker arm is provided with an arc-shaped guide groove with the depth gradually increasing and taking the threaded hole as the center of a circle.
Furthermore, a guide post which is matched with the guide groove in size is fixedly arranged on the fixing frame.
Further, the fixing frame is connected with the carburetor body through bolts.
The beneficial effects of the invention are as follows: the push type rotary valve carburetor of the invention drives the rotary valve to rotate and lift through the rocker arm, has simple operation, can quickly adjust the air quantity entering the carburetor, increases the air and fuel channels, provides controllable enriched fuel and air mixture, and can greatly improve the cold start or low temperature start performance of the engine.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is a sectional view of an embodiment of the present invention in a reset state;
FIG. 4 is a cross-sectional view of an embodiment of the present invention in an operational state;
fig. 5 is an enlarged schematic view of a rocker arm according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 5, the push-type rotary valve carburetor of the present invention comprises a carburetor body 1, a fixing frame 2 and a starting device 3, wherein the fixing frame 2 is detachably arranged on the carburetor body 1, the starting device 3 comprises a rotary valve 4 capable of rotating around a longitudinal axis to open or close a mixing channel, an oil needle 5 concentric with the rotary valve 4 is arranged in the rotary valve 4, a rocker arm 6 capable of driving the rotary valve to rotate and lift is connected to the upper part of the rotary valve 4, the rotary valve 4 and the rocker arm 6 penetrate through a threaded hole 21 in the middle of the fixing frame 2, threads corresponding to the threaded hole 21 are arranged at the connecting position, a button 7 is inserted on one side of the rocker arm 6, an arc-shaped spiral groove 22 with the depth gradually increased and with the threaded hole 21 as a center is arranged on the fixing frame 2 corresponding to the position of the button 7.
In this embodiment, preferably, a first return spring (not shown in the drawing) is disposed between the rotary valve 4 and the fixing frame 2, and a second return spring 8 is disposed between the button 7 and the rocker arm 6, and the rotary valve 4 and the button 7 can be reset by the first return spring and the second return spring 8 respectively.
In this embodiment, preferably, the fixing frame 2 is provided with a through hole 23 at the end of the spiral groove 22, the end of the button 7 is provided with a clamping groove 71 that can be clamped with the spiral groove 22, the through hole 23 can accommodate the button 7, and the rotary valve 4 can be kept at the final position by adopting the clamping of the clamping groove 71 and the spiral groove 22, so that the air and fuel channels can be continuously increased.
In this embodiment, preferably, the rocker arm 6 is further provided with a protruding limiting portion 61, the fixing frame 2 is provided with a telescopic blocking rod 24 corresponding to the limiting portion 61, the blocking rod 24 is telescopic, and the position of the blocking rod 24 can be adjusted according to practical requirements so as to block the resetting of the limiting portion 61, further control the position of the rotary valve 4, adjust the sizes of the air and fuel channels, and control the concentration of fuel and air mixture.
In this embodiment, preferably, the stop lever 24 is a screw, and the fixing frame 2 is provided with a threaded seat 25 matched with the screw, so that the manufacturing is simple, the use is easy, and the cost is low.
In this embodiment, preferably, the bottom of the rocker arm 6 is provided with an arc-shaped guide groove 62 with a gradually increasing depth and with a threaded hole as a center.
In this embodiment, preferably, the fixing frame 2 is fixedly provided with a guide post 26 corresponding to the guide slot 62 in size, and the guide slot 62 is matched to guide the swing arm 6 to rotate so as not to deviate from the preset track.
In this embodiment, preferably, the fixing frame 2 is connected to the carburetor body 1 by bolts, which is simple and easy to answer and has low cost.
While the above detailed construction and dimensional data have been provided for the purpose of illustrating the preferred embodiments of the present invention, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (7)
1. A push rotary valve carburetor, characterized by: the rotary valve comprises a carburetor body, a fixing frame and a starting device, wherein the fixing frame is detachably arranged on the carburetor body, the starting device comprises a rotary valve capable of rotating around a longitudinal axis to open or close a mixing channel, an oil needle concentric with the rotary valve is arranged in the rotary valve, the upper part of the rotary valve is connected with a rocker arm capable of driving the rotary valve to rotate and lift, the rotary valve is connected with a threaded hole in the middle of the rocker arm penetrating through the fixing frame, threads corresponding to the threaded hole are arranged at the connecting position, a button is arranged on one side of the rocker arm in an inserting mode, an arc-shaped spiral groove with the depth gradually increased and with the threaded hole as a circle center is arranged on the fixing frame, a through hole is formed in the tail end of the spiral groove, and a clamping groove capable of being clamped with the spiral groove is formed in the tail end of the button.
2. A push rotary valve carburetor according to claim 1, wherein: a first reset spring is arranged between the rotary valve and the fixed frame, and a second reset spring is arranged between the button and the rocker arm.
3. A push rotary valve carburetor according to claim 1, wherein: the rocker arm is also provided with a protruding limiting part, and the fixing frame is provided with a telescopic baffle rod corresponding to the limiting part.
4. A push rotary valve carburetor according to claim 3, wherein: the baffle rod is a screw, and the fixing frame is provided with a thread seat matched with the screw.
5. A push rotary valve carburetor according to claim 1, wherein: the bottom of the rocker arm is provided with an arc-shaped guide groove with the depth gradually increasing and taking the threaded hole as the center of a circle.
6. A push rotary valve carburetor according to claim 5, wherein: the guide posts which are matched with the guide grooves in size are fixedly arranged on the fixing frame.
7. A push rotary valve carburetor according to claim 1, wherein: the fixing frame is connected with the carburetor body through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711139407.2A CN107859574B (en) | 2017-11-16 | 2017-11-16 | Push type rotary valve carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711139407.2A CN107859574B (en) | 2017-11-16 | 2017-11-16 | Push type rotary valve carburetor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859574A CN107859574A (en) | 2018-03-30 |
| CN107859574B true CN107859574B (en) | 2024-01-16 |
Family
ID=61701954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711139407.2A Active CN107859574B (en) | 2017-11-16 | 2017-11-16 | Push type rotary valve carburetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859574B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110273785B (en) * | 2019-07-26 | 2024-01-30 | 福建华龙化油器有限公司 | Carburetor easy to start |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203383924U (en) * | 2013-08-09 | 2014-01-08 | 浙江银龙机车部件有限公司 | Rotary-valve-type membrane carburetor |
| CN205895431U (en) * | 2016-08-24 | 2017-01-18 | 福建省福鼎市金星通用机化油器有限公司 | Plastics carburetor |
| CN207660727U (en) * | 2017-11-16 | 2018-07-27 | 江门华联工业有限公司 | A kind of push type rotary valve carburetor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6769670B2 (en) * | 2001-12-07 | 2004-08-03 | Walbro Japan, Inc. | Starting assembly for a carburetor |
-
2017
- 2017-11-16 CN CN201711139407.2A patent/CN107859574B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203383924U (en) * | 2013-08-09 | 2014-01-08 | 浙江银龙机车部件有限公司 | Rotary-valve-type membrane carburetor |
| CN205895431U (en) * | 2016-08-24 | 2017-01-18 | 福建省福鼎市金星通用机化油器有限公司 | Plastics carburetor |
| CN207660727U (en) * | 2017-11-16 | 2018-07-27 | 江门华联工业有限公司 | A kind of push type rotary valve carburetor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107859574A (en) | 2018-03-30 |
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