CN206175091U - Carburetor fuel gas switching mechanism and carburetor - Google Patents
Carburetor fuel gas switching mechanism and carburetor Download PDFInfo
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- CN206175091U CN206175091U CN201621158890.XU CN201621158890U CN206175091U CN 206175091 U CN206175091 U CN 206175091U CN 201621158890 U CN201621158890 U CN 201621158890U CN 206175091 U CN206175091 U CN 206175091U
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Abstract
The utility model discloses a carburetor fuel gas switching mechanism, including gas seat and first valve rod, be equipped with in the gas seat and be linked together and the axis central through hole parallel with the axis of first valve rod with the air hose, and the central through hole is interior is equipped with the second valve rod rather than sliding fit, the top of first valve rod be equipped with with main metering orifice complex needle valve, and below the bottom of first valve rod stretches out the carburettor float room, be equipped with a seal structure between first valve rod and the float chamber, the lower extreme of first valve rod and second valve rod is equipped with the swing arm, and the swing arm is respectively with first valve rod with the second valve rod is articulated is connected, and the bottom surface of float chamber is equipped with and lies in first valve rod and the connecting rod of second valve rod with one side, connecting rod and the articulated swing fulcrum of being connected and forming the swing arm of swing arm, and connect on the swing arm to be equipped with and be used for driving it and wind and swing the fulcrum and swing and then drive first valve rod and second valve rod and follow respectively that its axis is gliding acts as go -between. The utility model also discloses a carburetor.
Description
Technical field
The utility model is related to a kind of carburetor, is specifically a kind of carburetor and its fuel-firing gas-firing switching mechanism.
Background technology
Carburetor（carburetor）It is under the vacuum action that engine work is produced, by a certain proportion of gasoline and sky
The mechanical device of gas mixing.Used as a kind of accurate mechanical device, it realizes gasoline to carburetor using the kinetic energy of suction air stream
Atomization.Its important function to engine can be referred to as " heart " of engine.Its complete device should include starting
Device, idling device, moderate duty device, full load device, accelerator.Carburetor can be according to the different operating shape of engine
State demand, automatic mixing goes out corresponding concentration, the gaseous mixture of the corresponding amount of output, in order that the comparison of the gaseous mixture mixing allotted
Uniformly, carburetor is also equipped with making the effect of fuel-oil atmozation, so that machine normally runs.
Dual fuel engine is that one kind can use Fuel Petroleum and LP gas fuel or natural gas new as fuel
H type engine h, it has high-efficiency low-pollution draining technology feature, there is good development prospect.Though existing oil-gas two-way carburetor
The use requirement of dual fuel engine is so disclosure satisfy that to a certain extent, but still suffers from complex structure, operation inconvenience, switching
Slow-footed problem.
The content of the invention
In view of this, the purpose of this utility model is to provide a kind of carburetor and its fuel-firing gas-firing switching mechanism, can
Fuel oil or combustion gas are provided engine, and fuel-firing gas-firing switching is quick, it is easy to operate.
To reach above-mentioned purpose, the utility model provides following technical scheme：
The utility model first proposed a kind of carburetor fuel combustion gas switching mechanism, including with carburetor air hose pair
The burned gas base that should be arranged and the first valve rod being coaxially disposed with carbureter main jet, are provided with soft with the gas transmission in the burned gas base
Pipe be connected and axis and the diameter parallel of first valve rod central through hole, and be slidably matched with it in the central through hole
It is provided with the second valve rod；
The top of first valve rod is provided with the needle-valve coordinated with main jet, and the bottom of first valve rod is stretched out
The carburetor bowl lower section, between first valve rod and the float chamber the first sealing structure is provided with；
The central through hole includes being located at the first big footpath section of upper end, the second largest footpath section positioned at lower end and positioned at described the
Central diameter section between one big footpath section and second largest footpath section, the internal diameter of the central diameter section is less than the described first big footpath section and second largest footpath
The internal diameter of section, the side wall of the central diameter section is provided with fuel gas inlet；The top of second valve rod is provided with big positioned at described first
In the section of footpath and for blocking the air hose or the plug for blocking the central diameter section, the external diameter of second valve rod is less than
It is provided with the middle part of the internal diameter of the central diameter section, and second valve rod between the fuel gas inlet and the second largest footpath section
Collar, second seals structure is provided between the collar and the central diameter section, on second valve rod set be equiped with positioned at institute
State collar lower section and be used for the back-moving spring for driving second valve rod to move upwards in the second largest footpath section；
The lower end of first valve rod and the second valve rod is provided with swing arm, the swing arm respectively with first valve rod and
Second valve rod is articulated and connected, and the bottom surface of the float chamber is provided with the connection positioned at first valve rod and second valve rod the same side
Bar, the connecting rod is articulated and connected with the swing arm and is formed and connects in the swing pivot of the swing arm, and the swing arm
It is equipped with for driving it to swing around the swing pivot and then drive first valve rod and the second valve rod respectively along its axis
The bracing wire of slip.
Further, the top of the burned gas base is fixed with connector, and the upper end of the connector is provided with closed being sleeved on
The first plug in the air hose, lower end are provided with the second plug in the central through hole, and in the connector
It is provided with the intercommunicating pore for connecting the central through hole and the air hose.
Further, second valve rod is located between first valve rod and connecting rod, and the top surface of the plug is provided with use
In the closure plane for blocking the intercommunicating pore.
Further, when the swing arm is vertical with the axis of first valve rod, the needle-valve inserts the main jet
Interior closure length a and the plug are apart from the relation of the closure between b of the intercommunicating pore：b/a=D1/（D1+D2）, its
In, D1For the spacing between connecting rod and second valve rod, D2Spacing between first valve rod and the second valve rod.
Further, first valve rod is located between the connecting rod and the second valve rod, the central diameter section and described first
The up big and down small transition of internal diameter is provided between the section of big footpath, the bottom surface of the plug is provided with and coordinates and on external diameter with the changeover portion
Little closure face under big.
Further, when the swing arm is vertical with the axis of first valve rod, the needle-valve inserts the main jet
Interior closure length a and the plug are apart from the relation of the closure between b of the changeover portion：a/b=D3/（D3+D2）, its
Middle D3For the spacing between connecting rod and the first valve rod, D2Spacing between first valve rod and the second valve rod.
Further, first sealing structure includes being arranged between first valve rod and the float chamber and being sleeved on
Dished sealing washer on first valve rod.
Further, it is provided with the dished sealing washer and is sleeved on first valve rod and for driving first valve rod
Motion upwards makes needle-valve insert the spring in the main jet.
Further, the second seals structure include be arranged between the collar and the central diameter section at least together with it is close
Seal；
With the connecting rod, the first valve rod and the second valve rod kidney-shaped circular hole is correspondingly provided with respectively on the swing arm, it is described
The bottom of connecting rod, the first valve rod and the second valve rod is respectively equipped with the latch in the insertion kidney-shaped circular hole.
The utility model also proposed a kind of carburetor, including carburetor body and carburetor fuel combustion gas as above
Switching mechanism, the carburetor body is provided with main jet and air hose, and the burned gas base is fixedly mounted on the carburetor
On the side side wall of the float chamber of body, the swing arm is located at the lower section of the carburetor body.
The beneficial effects of the utility model are：
Carburetor of the present utility model, by arranging carburetor fuel combustion gas switching mechanism, under conventional sense, due to multiple
The effect of position spring so that needle-valve is inserted all the time in main jet, i.e., main jet is normally closed, and fuel gas inlet is connected with gas pipeline
It is logical, pull swing arm around swing pivot to lower swing using bracing wire, you can while driving the first valve rod and the second valve rod to transport downwards
It is dynamic so that when departing from main jet, the plug of lucky second valve rod blocks central diameter section to the needle-valve of the first valve rod, i.e. main jet
While connection float chamber, gas pipeline is cut off with fuel gas inlet, realizes the switching of fuel-firing gas-firing, simple, anti-with switching
Should quick and advantage simple and compact for structure, and the use requirement of dual fuel engine is disclosure satisfy that, compared to existing oil gas
Dual-purpose carburetor, it has further the advantage that：
1st, when carburetor oil cup also has fuel oil, it is ensured that normally using combustion gas, without such as existing oil-gas two-way
Even if oily device it is the same when lubricating cup has fuel oil cannot using combustion gas start or using combustion gas start after also can stop working；
2nd, when environment temperature is relatively low, if the bad startup of combustion gas, gasoline startup can be switched to, and can be directly cut after starting
Combustion gas is changed to, vice versa；
3rd, carburetor of the present utility model can ensure that engine switches fuel oil and combustion gas under arbitrary load, it is not necessary to put out
Fire is operated again.
Description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing is illustrated：
Fig. 1 is the structural representation of the utility model carburetor embodiment；
Fig. 2 is principle schematic when the second valve rod is located between the first valve rod and connecting rod；
Fig. 3 is principle schematic when the first valve rod is located between connecting rod and the second valve rod.
Description of reference numerals：
1- carburetor bodies；2- main jets；3- air hoses；4- burned gas bases；The valve rods of 5- first；5a- needle-valves；6- floats
Room；The valve rods of 7- second；7a- plugs；7b- collars；8- dished sealing washers；9- springs；10- connectors；The plugs of 10a- first；10b-
Second plug；10c- intercommunicating pores；The big footpath sections of 11- first；The second largest footpath sections of 12-；13- central diameter sections；14- fuel gas inlets；15- resets
Spring；16- sealing rings；17- swing arms；18- connecting rods；19- bracing wires；20- changeover portions；21- kidney-shaped circular holes；22- latches.
Specific embodiment
Below in conjunction with the accompanying drawings the utility model is described in further detail with specific embodiment, so that those skilled in the art
The utility model can be better understood from and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
As shown in figure 1, for the structural representation of the utility model carburetor embodiment.The carburetor of the present embodiment, including
Carburetor body 1 and carburetor fuel combustion gas switching mechanism, carburetor body 1 is provided with main jet 2 and air hose 3, this reality
Applying the carburetor fuel combustion gas switching mechanism of example includes the burned gas base 4 being correspondingly arranged with carburetor air hose 3 and and carburetor
The first valve rod 5 that main jet 2 is coaxially disposed, burned gas base 4 is fixedly mounted on the side side wall of the float chamber 6 of carburetor body 1,
It is provided with the burned gas base 4 of the present embodiment and is connected with air hose 3 and the center of the diameter parallel of axis and the first valve rod 5 is logical
It is slidably matched with it in hole, and central through hole and is provided with the second valve rod 7.
The top of first valve rod 5 of the present embodiment is provided with the needle-valve 5a coordinated with main jet 2, and the bottom of the first valve rod 5
The lower section of carburetor bowl 6 is stretched out, between the first valve rod 5 and float chamber 6 the first sealing structure is provided with.The of the present embodiment
One sealing structure includes the dished sealing washer 8 for being arranged between the first valve rod 5 and float chamber 6 and being sleeved on the first valve rod 5, this
It is provided with the dished sealing washer 8 of embodiment and is sleeved on the first valve rod 5 and makes needle-valve 5a for driving the first valve rod 5 to move upwards
Spring 9 in insertion main jet 2, can not only meet the seal request of float chamber 6, and be able to ensure that main jet 2 in routine
All the time normally off is under state.
The central through hole of the present embodiment include be located at upper end the first big footpath section 11, positioned at the second largest and of footpath section 12 of lower end
Central diameter section 13 between the first big footpath section 11 and second largest footpath section 12, the internal diameter of central diameter section 13 is less than the first big He of footpath section 11
The internal diameter of second largest footpath section 12, the side wall of central diameter section 13 is provided with fuel gas inlet 14.The top of the second valve rod 7 is provided with positioned at first
In big footpath section 11 and for blocking air hose 3 or the plug 7a for blocking central diameter section 13, during the external diameter of the second valve rod 7 is less than
The internal diameter of footpath section 13, and the middle part of the second valve rod 7 is provided with collar 7b between fuel gas inlet 14 and second largest footpath section 12, axle
Second seals structure is provided between ring 7b and central diameter section 13, set is equiped with positioned at collar 7b lower section and positioned at the on the second valve rod 7
Back-moving spring 15 in two big footpath sections 12 for driving the second valve rod 7 to move upwards.Second seals structure includes being arranged on collar
Between 7b and central diameter section 13 at least together with sealing ring 16, the amount two seals between collar 7b and central diameter section 13 of the present embodiment
Circle 16.
First valve rod 5 of the present embodiment and the lower end of the second valve rod 7 are provided with swing arm 17, and swing arm 17 is located at carburetor sheet
The lower section of body 1.Swing arm 17 is articulated and connected respectively with the first valve rod 5 and the second valve rod 7, and the bottom surface of float chamber 6 is provided with positioned at
One valve rod 5 and the connecting rod 18 of the same side of the second valve rod 7, connecting rod 18 and swing arm 17 are articulated and connected and form swing arm 17
It is connected with swing pivot, and swing arm 17 for driving it to swing around swing pivot and then driving the first valve rod 5 and second
The bracing wire 19 that valve rod 7 slides respectively along its axis.
Further, the top of the burned gas base 4 of the present embodiment is fixed with connector 10, and the upper end of connector 10 is provided with closed
The second plug 10b that the first plug 10a for being sleeved in air hose 3, lower end are provided with central through hole, and connector 10
Inside it is provided with the intercommunicating pore 10c for connecting central through hole and air hose 3.Second valve rod 7 is located at the first valve rod 5 and connecting rod 18
Between, the top surface of plug 7a is provided with the closure plane for blocking intercommunicating pore 10c.And when the axle of the valve rod 5 of swing arm 17 and first
When line is vertical, needle-valve 5a insertion main jet 2 in closure length a and plug 7a apart from intercommunicating pore 10c closure between b
Relation is：b/a=D1/（D1+D2）, wherein, D1For the spacing between connecting rod and the second valve rod, D2First valve rod and the second valve rod
Between spacing, as shown in Figure 2.Or first valve rod 5 be located between the valve rod 7 of connecting rod 18 and second, central diameter section 13 and first is big
The up big and down small transition 20 of internal diameter is provided between footpath section 11, the bottom surface of plug 7a is provided with and coordinate with changeover portion 20 and big on external diameter
Under little closure face, and when swing arm 17 is vertical with the axis of the first valve rod 5, the closure in needle-valve 5a insertion main jets 2 is long
Spending relation of closure of a and plug 7a apart from changeover portion 20 between b is：a/b=D3/（D3+D2）, wherein D3For connecting rod with
Spacing between first valve rod, D2Spacing between first valve rod and the second valve rod, as shown in Figure 3.First valve of the present embodiment
Bar 5 is located between the valve rod 7 of connecting rod 18 and second.
Kidney-shaped is correspondingly provided with the swing arm 17 of the present embodiment with connecting rod 18, the first valve rod 5 and the second valve rod 7 respectively to justify
Hole 21, the bottom of connecting rod 18, the first valve rod 5 and the second valve rod 7 is respectively equipped with the latch 22 in insertion kidney-shaped circular hole 21, you can
Realization is articulated and connected, and latch 22 can slide in kidney-shaped circular hole 21, it is ensured that the first valve rod 5 and the second valve rod 7 prolong axis slip
Shi Buhui produces interference.
The carburetor of the present embodiment, by arranging carburetor fuel combustion gas switching mechanism, under conventional sense, due to resetting
The effect of spring so that needle-valve is inserted all the time in main jet, i.e., main jet is normally closed, and fuel gas inlet is connected with gas pipeline,
Pull swing arm around swing pivot to lower swing using bracing wire, you can while drive the first valve rod and the second valve rod to move downward,
So that the needle-valve of the first valve rod with main jet when departing from, the plug of lucky second valve rod blocks central diameter section, i.e., main jet connects
While logical float chamber, gas pipeline and fuel gas inlet are cut off, and realize the switching of fuel-firing gas-firing, with switching is simple, reaction
Quick and advantage simple and compact for structure, and the use requirement of dual fuel engine is disclosure satisfy that, compared to existing oil gas two
With carburetor, it has further the advantage that：
1st, when carburetor oil cup also has fuel oil, it is ensured that normally using combustion gas, without such as existing oil-gas two-way
Even if oily device it is the same when lubricating cup has fuel oil cannot using combustion gas start or using combustion gas start after also can stop working；
2nd, when environment temperature is relatively low, if the bad startup of combustion gas, gasoline startup can be switched to, and can be directly cut after starting
Combustion gas is changed to, vice versa；
3rd, carburetor of the present utility model can ensure that engine switches fuel oil and combustion gas under arbitrary load, it is not necessary to put out
Fire is operated again.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the utility model, the utility model
Protection domain not limited to this.Equivalent substitute or change that those skilled in the art are made on the basis of the utility model
Change, within protection domain of the present utility model.Protection domain of the present utility model is defined by claims.
Claims (10)
1. a kind of carburetor fuel combustion gas switching mechanism, it is characterised in that：Including the combustion being correspondingly arranged with carburetor air hose
Gas seat and the first valve rod being coaxially disposed with carbureter main jet, be provided with the burned gas base be connected with the air hose and
It is slidably matched with it in the central through hole of axis and the diameter parallel of first valve rod, and the central through hole and is provided with the second valve
Bar；
The top of first valve rod is provided with the needle-valve coordinated with main jet, and the bottom of first valve rod stretches out described
Carburetor bowl lower section, between first valve rod and the float chamber the first sealing structure is provided with；
The central through hole includes being located at the first big footpath section of upper end, the second largest footpath section positioned at lower end and big positioned at described first
Central diameter section between footpath section and second largest footpath section, the internal diameter of the central diameter section is less than the described first big footpath section and second largest footpath section
Internal diameter, the side wall of the central diameter section is provided with fuel gas inlet；The top of second valve rod is provided with positioned at the described first big footpath section
Plug interior and for blocking the air hose or for blocking the central diameter section, the external diameter of second valve rod is less than described
The axle being provided with the middle part of the internal diameter of central diameter section, and second valve rod between the fuel gas inlet and the second largest footpath section
Ring, is provided with second seals structure between the collar and the central diameter section, set is equiped with positioned at the axle on second valve rod
Ring lower section and the back-moving spring being located in the second largest footpath section for driving second valve rod to move upwards；
The lower end of first valve rod and the second valve rod is provided with swing arm, the swing arm respectively with first valve rod and second
Valve rod is articulated and connected, and the bottom surface of the float chamber is provided with the connecting rod positioned at first valve rod and second valve rod the same side, institute
State and be connected with the swing pivot that connecting rod is articulated and connected with the swing arm and forms the swing arm, and the swing arm
For driving it to swing around the swing pivot and then driving what first valve rod and the second valve rod slided respectively along its axis
Bracing wire.
2. carburetor fuel combustion gas switching mechanism according to claim 1, it is characterised in that：The top of the burned gas base is consolidated
Surely connector is provided with, the upper end of the connector is provided with closed the first plug being sleeved in the air hose, lower end and is provided with
The second plug in the central through hole, and be provided with the connector for connecting the central through hole and the gas transmission
The intercommunicating pore of flexible pipe.
3. carburetor fuel combustion gas switching mechanism according to claim 2, it is characterised in that：Second valve rod is located at institute
State between the first valve rod and connecting rod, the top surface of the plug is provided with the closure plane for blocking the intercommunicating pore.
4. carburetor fuel combustion gas switching mechanism according to claim 3, it is characterised in that：When the swing arm with it is described
When the axis of the first valve rod is vertical, the needle-valve inserts closure length a and the plug in the main jet apart from the company
Relation of the closure of through hole between b be：b/a=D1/（D1+ D2）, wherein, D1For between connecting rod and second valve rod
Spacing, D2Spacing between first valve rod and the second valve rod.
5. carburetor fuel combustion gas switching mechanism according to claim 1, it is characterised in that：First valve rod is located at institute
State between connecting rod and the second valve rod, between the central diameter section and the first big footpath section the up big and down small transition of internal diameter is provided with
Section, the bottom surface of the plug is provided with and coordinates and the up big and down small closure face of external diameter with the changeover portion.
6. carburetor fuel combustion gas switching mechanism according to claim 5, it is characterised in that：When the swing arm with it is described
When the axis of the first valve rod is vertical, the needle-valve inserts closure length a and the plug in the main jet apart from the mistake
Crossing relation of the closure of section between b is：a/b=D3/（D3+D2）, wherein D3For the spacing between connecting rod and the first valve rod,
D2Spacing between first valve rod and the second valve rod.
7. carburetor fuel combustion gas switching mechanism according to claim 1, it is characterised in that：The first sealing structure bag
Include the dished sealing washer being arranged between first valve rod and the float chamber and be sleeved on first valve rod.
8. carburetor fuel combustion gas switching mechanism according to claim 7, it is characterised in that：Set in the dished sealing washer
It is sleeved on first valve rod and needle-valve is inserted in the main jet for driving first valve rod to move upwards
Spring.
9. carburetor fuel combustion gas switching mechanism according to claim 1, it is characterised in that：The second seals structure bag
Include be arranged between the collar and the central diameter section at least together with sealing ring；
With the connecting rod, the first valve rod and the second valve rod kidney-shaped circular hole, the connection are correspondingly provided with the swing arm respectively
The bottom of bar, the first valve rod and the second valve rod is respectively equipped with the latch in the insertion kidney-shaped circular hole.
10. a kind of carburetor, it is characterised in that：Including carburetor body and the carburetor as described in any one of claim 1-9
Fuel-firing gas-firing switching mechanism, the carburetor body is provided with main jet and air hose, and the burned gas base is fixedly mounted on institute
On the side side wall of the float chamber for stating carburetor body, the swing arm is located at the lower section of the carburetor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158890.XU CN206175091U (en) | 2016-11-01 | 2016-11-01 | Carburetor fuel gas switching mechanism and carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621158890.XU CN206175091U (en) | 2016-11-01 | 2016-11-01 | Carburetor fuel gas switching mechanism and carburetor |
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| Publication Number | Publication Date |
|---|---|
| CN206175091U true CN206175091U (en) | 2017-05-17 |
Family
ID=58680667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621158890.XU Active CN206175091U (en) | 2016-11-01 | 2016-11-01 | Carburetor fuel gas switching mechanism and carburetor |
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| CN (1) | CN206175091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368853A (en) * | 2016-11-01 | 2017-02-01 | 重庆大江动力设备制造有限公司 | Carburetor and fuel oil and fuel gas switching mechanism thereof |
-
2016
- 2016-11-01 CN CN201621158890.XU patent/CN206175091U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368853A (en) * | 2016-11-01 | 2017-02-01 | 重庆大江动力设备制造有限公司 | Carburetor and fuel oil and fuel gas switching mechanism thereof |
| CN106368853B (en) * | 2016-11-01 | 2018-01-30 | 重庆大江动力设备制造有限公司 | Carburetor and its fuel-firing gas-firing switching mechanism |
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