CN102392759A - Carburetor - Google Patents
Carburetor Download PDFInfo
- Publication number
- CN102392759A CN102392759A CN2011103977823A CN201110397782A CN102392759A CN 102392759 A CN102392759 A CN 102392759A CN 2011103977823 A CN2011103977823 A CN 2011103977823A CN 201110397782 A CN201110397782 A CN 201110397782A CN 102392759 A CN102392759 A CN 102392759A
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- Prior art keywords
- float
- cover
- pump
- carburetor
- push rod
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Abstract
The invention discloses a carburetor which comprises a carburetor body (1) and a float cover (2), wherein the float cover (2) is connected with an accelerating pump (14), a diaphragm (18) of a cavity (17) is arranged at the end part of a top bar (19), and the top bar (19) is pressed against a mast base assembly (8); the cavity (17) is communicated with a float chamber by an accelerating oil duct (24), a pump body (15) is provided with an accelerating nozzle (26), and the accelerating nozzle (26) is arranged behind a main nozzle (42); a float (28) is provided with a gap, and a straight tube (32) communicated with a needle valve seat is arranged on the float cover (2). The carburetor disclosed by the invention has the advantages that: the accelerating nozzle (26) is arranged behind the main nozzle (42), so that the operation of the accelerating pump (14) can not cause reduction of the fuel injection amount of the main nozzle (42), therefore, the accelerating effect is good; and the outsides of through holes (for installing plugs) of the carburetor body (1) and the float cover (2) are respectively provided with a boss, therefore, the sealing effect is good.
Description
Technical field
The present invention relates to the atomising device in the oil-burning machine fuel supply system, particularly a kind of Carburetor.
Background technique
The effect of Carburetor is ambient air to be introduced in the Carburetor be mixed into oil gas with fuel oil; Utilize the ignition device generation to fire again in the input engine, and can promote the piston generation power of cylinder, promote the driving wheel rotation; Reach the purpose of advancing; Its working procedure is: the fuel oil of carburetor bowl gets into trunnion through main jet through spout, mixes with the trunnion high velocity air, and atomizing gets into petrol engine; Its working principle is: when the petrol engine running produces negative pressure; Attract high velocity air to pass through trunnion; When the pressure of main injection jet was lower than the pressure of float chamber, fuel oil will come from nozzle opening ejection oil, then with swiftly flowing air mixing, expansion, atomizing; Be mixed into more uniform inflammable gas, get into petrol engine.
Existing plunger type carburetor does not generally have the accelerating pump device, when motorcycle raises speed, can not extra acceleration fuel oil be provided to motor; What have has an accelerating pump device; But the acceleration nozzle of accelerating pump device is positioned at more near the trunnion suction port with respect to main nozzle; Therefore the existence of the acceleration nozzle pressure that can reduce main nozzle falls, thereby has reduced the fuel injection quantity of main nozzle, can not reach best acceleration effect.
And when on the existing Carburetor screw plug being installed, be on the Carburetor outer wall, directly to open threaded through hole, then screw plug be installed in this through hole that this method makes that the Carburetor sealing intensity is low, sealing effect is bad, also Carburetor outer wall intensity is impacted.
The float of existing Carburetor all is structure as a whole, and uses integrative-structure can cause the carburettor float swing restricted, thereby causes oily level influenced.
The connecting tube that is connected with the float needle valve assembly of existing Carburetor is a bend pipe, and bend pipe long back service time is prone to aging, cause leakage of oil, and the inconvenient machining cost is high.
Summary of the invention
The objective of the invention is to overcome the shortcoming of existing technology, provide that a kind of acceleration effect is good, the Carburetor of good sealing effect.
The object of the invention is realized through following technological scheme:
A kind of Carburetor; It comprises Carburetor body and float cover, is provided with float chamber between Carburetor body and the float cover, is provided with trunnion in the Carburetor body; Be provided with the throttle blade that is installed on the throttle plate pin in the trunnion; One end of throttle plate pin is equipped with the closure suspended rack assembly, and the other end of throttle plate pin is provided with bracket assembly and support, and the bracket assembly is provided with a pressing plate; Also be provided with idle bolt and accelerating pump trimming bolt on the Carburetor body, the accelerating pump trimming bolt presses on the bracket assembly;
Be connected with accelerating pump on the float cover, accelerating pump comprises the pump housing and pump cover, and the pump housing is connected with float cover, and pump cover is connected with the pump housing; And form cavity between the pump cover and the pump housing, be provided with diaphragm in the cavity, a push rod is installed in the pump housing; Diaphragm is installed on the end of push rod, and the both sides of diaphragm respectively are provided with a compressing tablet, is provided with a push rod spring between diaphragm and the pump cover; Push rod spring one end roof pressure is on pump cover, and the other end roof pressure is on the compressing tablet of the diaphragm outside, and the push rod the other end runs through the pump housing; And push rod is with gum cover outside this end end, and the Carburetor body is provided with the tip-lever support that cooperates with push rod, and push rod passes tip-lever support and this end end presses on the pressing plate; Also be provided with the acceleration oil duct on the pump housing, cavity is connected with float chamber through quickening oil duct, and is provided with one-way valve A between oil duct and cavity; Also be provided with acceleration nozzle on the pump housing; Acceleration nozzle one end leads to trunnion, and an end links to each other with cavity, and is provided with one-way valve B between acceleration nozzle and the cavity; With air flow direction direction in the trunnion is reference, and said acceleration nozzle is positioned at the rear of main nozzle;
Be provided with float, float needle assemblies and pintle valve seat assembly in the float cover; Float and float needle assemblies are movably installed on the float cover through the float pin; Said float is provided with breach, and float needle assemblies roof pressure is on the pintle valve seat assembly, and float cover is provided with the straight tube that is communicated with the pintle valve seat assembly;
Also be provided with main jet, primary air metering-orifice, idle metering jet on the Carburetor body, be provided with main nozzle in the main jet, idle metering jet is circumscribed with the air balance pipe, and main jet, primary air metering-orifice, idle metering jet all are connected with float chamber.
Also be provided with the body screw plug on the described Carburetor body, also be provided with the float cover screw plug on the float cover, the position that Carburetor body and float cover are installed screw plug is provided with through hole, and the through hole outside is provided with the boss that screw plug is installed.
The present invention has the following advantages:
1, acceleration nozzle of the present invention is positioned at the rear of main nozzle, when accelerating pump work is quickened, can not influence the pressure at main nozzle place, so the work of accelerating pump can not cause the main nozzle fuel injection quantity to reduce, and acceleration effect is good.
2, Carburetor body of the present invention and float cover are provided with boss in the outside of the through hole that screw plug is installed, good sealing effect, and the while can not reduced the bulk strength of Carburetor yet.
3, establish breach on the float of the present invention, fully step down, make the float swing not influenced by the acceleration nozzle base.
4, the connecting tube that is connected with the float needle valve assembly is a straight tube, is prone to processing, has reduced cost of production, and is difficult in using having promoted reliability because of rotation causes wearing out.
Description of drawings
Fig. 1 is a plan view of the present invention
Fig. 2 is a left view of the present invention
Fig. 3 is a worm's eye view of the present invention
Fig. 4 removes float cover, quickens the worm's eye view behind the pump cover for the present invention
Fig. 5 is the sectional view of Fig. 1 along the A-A cross section
Fig. 6 is the sectional view of Fig. 4 along the B-B cross section
Fig. 7 is the sectional view of Fig. 4 along the C-C cross section
Fig. 8 is the sectional view of Fig. 4 along the D-D cross section
Fig. 9 is the sectional view of Fig. 3 along the D-D cross section
Among the figure, 1-Carburetor body, 2-float cover, 3-throttle plate pin, 4-closure, 5-closure suspended rack assembly, 6-return spring, 7-closure axle sleeve; 8-bracket assembly, 9-support, 10-stand spring, 11-pressing plate, 12-idle bolt, 13-accelerating pump trimming bolt, 14-accelerating pump; The 15-pump housing, 16-pump cover, 17-cavity, 18-diaphragm, 19-push rod, 20-compressing tablet, 21-push rod spring; The 22-gum cover, the 23-tip-lever support, 24-quickens oil duct, 25-one-way valve A, 26-acceleration nozzle, 27-one-way valve B, 28-float; 29-float needle assemblies, 30-pintle valve seat assembly, 31-float pin, 32-straight tube, 33-main jet, 34-primary air metering-orifice, 35-idle metering jet; 36-air balance pipe, 37-body screw plug, 38-float cover screw plug, the 39-starter gate valve, 40-starts valve rod, and 41-starts foam tube, 42-main nozzle.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further description:
Like Fig. 1 to Fig. 4, shown in Figure 8, a kind of Carburetor, it comprises Carburetor body 1 and float cover 2; Be provided with float chamber between Carburetor body 1 and the float cover 2; Be provided with trunnion in the Carburetor body 1, throttle plate pin 3 is installed in the Carburetor body 1, the closure 4 that is installed on the throttle plate pin 3 is positioned at trunnion; Carburetor body 1 is all run through at the two ends of throttle plate pin 3; One end of throttle plate pin 3 is equipped with closure suspended rack assembly 5, and 1 of closure suspended rack assembly 5 and Carburetor body are provided with a return spring 6, and acceleration cable is connected with closure suspended rack assembly 5; The other end of throttle plate pin 3 is installed on the carburetor main body through closure axle sleeve 7; The part that closure axle sleeve 7 exceeds Carburetor is provided with bracket assembly 8; The end of throttle plate pin 3 is provided with support 9, and 8 of support 9 and bracket assemblies are provided with a stand spring 10, and bracket assembly 8 is provided with a pressing plate 11; Also be provided with idle bolt 12, accelerating pump trimming bolt 13 on the Carburetor body 1, accelerating pump trimming bolt 13 presses on the bracket assembly 8;
Like Fig. 3, shown in Figure 6, be connected with accelerating pump 14 on the float cover 2, accelerating pump 14 comprises the pump housing 15 and pump cover 16; The pump housing 15 is connected with float cover 2, and pump cover 16 is connected with the pump housing 15, and pump cover 16 and 15 formation of pump housing cavity 17; Be provided with diaphragm 18 in the cavity 17, a push rod 19 is installed on the pump housing 15, diaphragm 18 is installed on the end of push rod 19; The both sides of diaphragm 18 respectively are provided with a compressing tablet 20, are provided with a push rod spring 21 between diaphragm 18 and the pump cover 16, and push rod spring 21 1 end roof pressures are on pump cover 16; The other end roof pressure is on diaphragm 18 outside compressing tablets 20, and push rod 19 the other ends run through the pump housing 15, and is with gum cover 22 outside push rod 19 these end ends; Like Fig. 4, shown in Figure 2, Carburetor body 1 is provided with the tip-lever support 23 that cooperates with push rod 19, and push rod 19 passes tip-lever support 23 and this end end presses on the pressing plate 11; As shown in Figure 6, also be provided with on the pump housing 15 and quicken oil duct 24, cavity 17 is connected with float chamber through quickening oil duct 24; And 17 of oil duct and cavitys are provided with one-way valve A25, also are provided with acceleration nozzle 26 on the pump housing 15, and acceleration nozzle 26 1 ends lead to trunnion; One end links to each other with cavity 17, and is provided with one-way valve B27 between acceleration nozzle 26 and the cavity 17, is reference with air flow direction direction in the trunnion; Said acceleration nozzle 26 is positioned at the rear of main nozzle 42, and when accelerating pump work was quickened, the fuel oil of acceleration nozzle 26 ejections can not influence the pressure at main nozzle 42 places; Therefore the work of accelerating pump can not cause the main nozzle fuel injection quantity to reduce, and acceleration effect is good.
Like Fig. 5, shown in Figure 9; Be provided with float 28, float needle assemblies 29 and pintle valve seat assembly 30 in the float cover 2; Float 28 is movably installed on the float cover 2 through float pin 31 with float needle assemblies 29, and said float 28 is provided with breach, establishes breach on the float; Fully step down, make the float swing not influenced by the acceleration nozzle base; Float needle assemblies 29 roof pressures are on pintle valve seat assembly 30, and float cover 2 is provided with the straight tube 32 that is communicated with pintle valve seat assembly 30, and connecting tube is a straight tube, are prone to processing, reduced cost of production, and are difficult in using having promoted reliability because of rotation causes wearing out.
As shown in Figure 4; Also be provided with main jet 33, primary air metering-orifice 34, idle metering jet 35 on the Carburetor body 1; Be provided with main nozzle 42 in the main jet 33, idle metering jet 35 is circumscribed with air balance pipe 36, and main jet 33, primary air metering-orifice 34, idle metering jet 35 all are connected with float chamber.
Also be provided with body screw plug 37 on the Carburetor body 1; Float cover 2 is provided with float cover screw plug 38; Install on the position of screw plug, Carburetor body 1 is provided with through hole with the position that float cover 2 is equipped with screw plug, and the through hole outside is provided with the boss that screw plug is installed; Make 1 good sealing effect of screw plug and Carburetor body, also can not reduce the bulk strength of Carburetor simultaneously.
Like Fig. 2, Fig. 4, shown in Figure 7, also be provided with starter gate valve 39 on the Carburetor body 1, described starter gate valve 39 comprises and starts valve rod 40 and start foam tube 41, start valve rod 40 by screw, and screw is provided with spring with 40 of valve rods of startup.
Working procedure of the present invention is following: when the pulling acceleration cable; Throttle plate pin 3 drives closure 4 rotations, drives support 9 rotations simultaneously, and the pressing plate 11 on the bracket assembly 8 promotes push rod 19; Push rod 19 is to cavity 17 inner roof pressure diaphragms 18; Thereby make and produce high pressure in the cavity 17, the fuel oil in the cavity 17 gets into trunnion through acceleration nozzle 26, thereby motor obtains required acceleration oil mass; The push rod spring 21 of the push rod 19 rear ends generation restoring force that suffers oppression simultaneously; After accomplishing accelerated operation; Push rod 19 return gradually under the compressing of push rod spring 21 restoring forces, the pressure in the cavity 17 reduce, and the fuel oil in the float chamber gets into cavitys 17 inside through quickening oil duct 24.
Claims (2)
1. Carburetor; It comprises Carburetor body (1) and float cover (2); Be provided with float chamber between Carburetor body (1) and the float cover (2), the Carburetor body is provided with trunnion in (1), is provided with the closure (4) that is installed on the throttle plate pin (3) in the trunnion; It is characterized in that: an end of throttle plate pin (3) is equipped with closure suspended rack assembly (5); The other end of throttle plate pin (3) is provided with bracket assembly (8) and support (9), and bracket assembly (8) is provided with a pressing plate (11), also is provided with idle bolt (12) and accelerating pump trimming bolt (13) on the Carburetor body (1);
Be connected with accelerating pump (14) on the float cover (2), accelerating pump (14) comprises the pump housing (15) and pump cover (16), and the pump housing (15) is connected with float cover (2); Pump cover (16) is connected with the pump housing (15), and forms cavity (17) between the pump cover (16) and the pump housing (15), is provided with diaphragm (18) in the cavity (17); One push rod (19) is installed in the pump housing (15); Diaphragm (18) is installed on the end of push rod (19), and the both sides of diaphragm (18) respectively are provided with a compressing tablet (20), is provided with a push rod spring (21) between diaphragm (18) and the pump cover (16); Push rod spring (21) one end roof pressures are on pump cover (16); The other end roof pressure is on diaphragm (18) outside compressing tablet (20), and push rod (19) the other end runs through the pump housing (15), and is with gum cover (22) outside this end end of push rod (19); Carburetor body (1) is provided with the tip-lever support (23) that cooperates with push rod (19), and push rod (19) passes tip-lever support (23) and this end end presses on the pressing plate (11); Also be provided with on the pump housing (15) and quicken oil duct (24); Cavity (17) is connected with float chamber through quickening oil duct (24); And be provided with one-way valve A (25) between oil duct and cavity (17), also be provided with acceleration nozzle (26) on the pump housing (15), acceleration nozzle (26) one ends lead to trunnion; One end links to each other with cavity (17); And being provided with one-way valve B (27) between acceleration nozzle (26) and the cavity (17), is reference with air flow direction direction in the trunnion, and said acceleration nozzle (26) is positioned at the rear of main nozzle (42);
Be provided with float (28), float needle assemblies (29) and pintle valve seat assembly (30) in the float cover (2); Float (28) is movably installed on the float cover (2) through float pin (31) with float needle assemblies (29); Said float (28) is provided with breach; Float needle assemblies (29) roof pressure is on pintle valve seat assembly (30), and float cover (2) is provided with the straight tube (32) that is communicated with pintle valve seat assembly (30);
Also be provided with main jet (33), primary air metering-orifice (34), idle metering jet (35) on the Carburetor body (1); Be provided with main nozzle (42) in the main jet (33); Idle metering jet (35) is circumscribed with air balance pipe (36), and main jet (33), primary air metering-orifice (34), idle metering jet (35) all are connected with float chamber.
2. a kind of Carburetor according to claim 1; It is characterized in that: also be provided with body screw plug (37) on the described Carburetor body (1); Also be provided with float cover screw plug (38) on the float cover (2); The position that Carburetor body (1) and float cover (2) are installed screw plug is provided with through hole, and the through hole outside is provided with the boss that screw plug is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103977823A CN102392759A (en) | 2011-12-05 | 2011-12-05 | Carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103977823A CN102392759A (en) | 2011-12-05 | 2011-12-05 | Carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392759A true CN102392759A (en) | 2012-03-28 |
Family
ID=45860123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103977823A Pending CN102392759A (en) | 2011-12-05 | 2011-12-05 | Carburetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102392759A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114943A (en) * | 2013-02-26 | 2013-05-22 | 苏州科瓴精密机械科技有限公司 | Carburetor seat of engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6342858U (en) * | 1986-09-05 | 1988-03-22 | ||
| JPH0163760U (en) * | 1987-10-19 | 1989-04-24 | ||
| CN2217110Y (en) * | 1994-11-22 | 1996-01-10 | 陈冬柏 | Carburettor |
| CN2413036Y (en) * | 2000-02-25 | 2001-01-03 | 四川红光汽车机电配件有限公司 | Carburettor for motorycle |
| JP2001153049A (en) * | 1999-11-22 | 2001-06-05 | Yamaha Motor Co Ltd | Diaphragm type pump |
| CN1743655A (en) * | 2004-09-01 | 2006-03-08 | 株式会社京浜 | Vaporizer acceleration device |
| JP3823334B2 (en) * | 1995-02-02 | 2006-09-20 | 株式会社ケーヒン | Multiple vaporizer with acceleration pump device |
-
2011
- 2011-12-05 CN CN2011103977823A patent/CN102392759A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6342858U (en) * | 1986-09-05 | 1988-03-22 | ||
| JPH0163760U (en) * | 1987-10-19 | 1989-04-24 | ||
| CN2217110Y (en) * | 1994-11-22 | 1996-01-10 | 陈冬柏 | Carburettor |
| JP3823334B2 (en) * | 1995-02-02 | 2006-09-20 | 株式会社ケーヒン | Multiple vaporizer with acceleration pump device |
| JP2001153049A (en) * | 1999-11-22 | 2001-06-05 | Yamaha Motor Co Ltd | Diaphragm type pump |
| CN2413036Y (en) * | 2000-02-25 | 2001-01-03 | 四川红光汽车机电配件有限公司 | Carburettor for motorycle |
| CN1743655A (en) * | 2004-09-01 | 2006-03-08 | 株式会社京浜 | Vaporizer acceleration device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114943A (en) * | 2013-02-26 | 2013-05-22 | 苏州科瓴精密机械科技有限公司 | Carburetor seat of engine |
| CN103114943B (en) * | 2013-02-26 | 2015-08-12 | 苏州科瓴精密机械科技有限公司 | The carburetor seat of motor |
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| PB01 | Publication | ||
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Application publication date: 20120328 |