CN209469516U

CN209469516U - Carbureter fuel direct-furnish shut-off valve assemblies

Info

Publication number: CN209469516U
Application number: CN201920121031.0U
Authority: CN
Inventors: 夏品清
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2019-10-08
Anticipated expiration: 2029-01-24

Abstract

The utility model relates to a kind of carbureter fuel direct-furnish shut-off valve assemblies, including valve body, valve seat, valve block, valve rod and reset spring, one side of the valve body is provided with the discharge port being connected with carbureter main jet, the valve block that the inner cavity lower part of the valve body is provided with valve seat and matches with valve seat, feeding-passage is provided in the middle part of the valve seat, the valve block covers on valve seat, valve rod is provided on the valve block, it is moved up and down by valve rod band moving valve plate, the upper end of valve rod is pierced by valve body, it forms valve rod and drives end, reset spring is equipped on the intracorporal valve rod of valve, the upper end of reset spring contradicts in valve body upper inner, the lower end of reset spring contradicts on valve block.Fuel can be directly sent into from the main jet of carburetor by the carbureter fuel direct-furnish shut-off valve assemblies of the utility model, make full use of the atomizing of carburetor body itself, supply engine uses after either gaseous state, liquid or gas-liquid mixed state are all carried out atomization and concentration proportioning by carburetor body to it.

Description

Carbureter fuel direct-furnish shut-off valve assemblies

Technical field

The utility model relates to Manufacturing Technology for Carburetors field, especially a kind of carbureter fuel direct-furnish shut-off valve assemblies, its energy It is suitable for the fuel of gaseous state, liquid and gas-liquid mixed state simultaneously.

Background technique

Existing carburetor majority is used only on gasoline, can not provide fuel to dual fuel engine.

In order to change this status, those skilled in the art improve existing carburetor, by existing A gas inlet channel and air inlet are drilled out on carburetor body, are then sent into combustion gas from the air inlet.

When flowing out from fuel cartridge due to combustion gas, not only there is biggish air pressure, but also unvaporized liquid can be mingled with State combustion gas, especially with the continuous gasification of liquid combustion gas in fuel cartridge, fuel cartridge temperature constantly declines (combustion gas tank wall condensation Frosting), cause the unvaporized liquid combustion gas of outflow gradually to increase.These combustion gas are can not to be directly connected to above-mentioned carburetor body On gas inlet channel, need to depressurize the combustion gas flowed out in fuel cartridge, heating atomization etc., i.e., also need to be equipped with combustion gas Control device, heating device etc..During actual use, these controller for gas, heating device etc. would generally sent out After motivation is shut down, it is detained a large amount of liquid state fuel, and these fuel will be leaked away slowly after the shutdown, cause fuel Significant wastage.

Currently, this kind of carburetor of Honda Company and the production of Yamaha company is all to guarantee to fire by adding heating device The rate of gasification of gas.The combustion gas for allowing liquid gas binary states to mix, flows through heating device, and the spiral coil of heating device is wrapped in and is started On the heat generating components of machine, the temperature and rate of gasification of combustion gas are improved by way of heat exchange.

This side on the basis of original Petrol carburetter sets a set of mentality of designing for gas combustion apparatus, although being also able to achieve The function that carburetor double fuel uses, but air supply channel and oil supply gallery are two channels being separated from each other, and are not had The components of the integration of effect, constitution equipment are more, and production cost is larger, and the volume of equipment entirety is larger, and occupied space is big.

Utility model content

Based on above-mentioned the deficiencies in the prior art, the utility model provides a kind of carbureter fuel direct-furnish shut-off valve assemblies, should Fuel is directly sent into from the main jet of carburetor by component, makes full use of the atomizing of carburetor body itself, either gas Supply engine uses after state, liquid or gas-liquid mixed state are all carried out atomization and concentration proportioning by carburetor body to it.

For achieving the above object, the technical solution of the utility model is: a kind of carbureter fuel direct-furnish method, uses Shut-off valve assemblies directly control the on-off of carbureter fuel, and the feed end of shut-off valve assemblies is connected with fuel feed line It connects, the discharge end of shut-off valve assemblies is connected directly on the main jet of carburetor, and the valve rod of shut-off valve assemblies is by starting machine negative pressure Mouth linkage control.Work as engine start, the valve rod of shut-off valve assemblies is driven and opened, fuel feed line by the negative pressure of engine In fuel after shut-off valve through to the main jet of carburetor, supply and start after the atomization of carburetor and concentration proportioning Machine uses；Work as engine stop, the valve rod of shut-off valve assemblies is not driven and the closing that automatically resets by the negative pressure of engine.

In the above-mentioned methods, the fuel flowed in fuel feed line can be fuel gas, be also possible to liquid fuel, It can also be gas-liquid mixed fuel, but the fuel of either gaseous state, liquid or gas-liquid mixed state is all by directly from carburetor sheet The main jet of body is sent into, without in addition drilling out gas inlet duct on carburetor body, without the other decompression dresses of configuration It sets, the gas supply ancillary equipment such as heating device, therefore constitutes components of the invention and significantly reduce, production cost is effectively reduced, and And volume of the invention can greatly reduce, and occupy little space.

In order to realize above-mentioned carbureter fuel direct-furnish method, the utility model is also provided: a kind of carbureter fuel direct-furnish The valve rod of shut-off valve assemblies is arranged in assembly, including shut-off valve assemblies and shut-off valve driving assembly, the shut-off valve driving assembly It drives on end, to control the on off operating mode variation of shut-off valve assemblies.

The shut-off valve assemblies include valve body, valve seat, valve block, valve rod and reset spring, the side setting of the valve body There are the discharge port being connected with carbureter main jet, the valve that the inner cavity lower part of the valve body is provided with valve seat and matches with valve seat Piece, the valve seat middle part are provided with feeding-passage, and the valve block covers on valve seat, is provided with valve rod on the valve block, passes through valve Bar band moving valve plate moves up and down, and the upper end of valve rod is pierced by valve body, forms valve rod and drives end, is equipped on the intracorporal valve rod of valve The upper end of reset spring, reset spring contradicts in valve body upper inner, and the lower end of reset spring contradicts on valve block.

The shut-off valve driving assembly includes shell, rocker arm, diaphragm and upper cover, and valve rod driving end is protruded into shell, And be connected with one end of rocker arm, it is hinged in the middle part of rocker arm on the hinged seat of housing cavity, the other end of rocker arm and diaphragm Middle part is connected, and venthole is provided on upper lid, and the circumference of diaphragm is pressed in the opening of shell by the circumference of upper cover, makes diaphragm A closed cavity is constituted with shell, the side of the shell is additionally provided with negative port, and the negative port is used for and hair The negative pressure of motivation is connected.

Work as engine start, the closed cavity that shell and diaphragm are constituted pushes diaphragm by suction function, and drives rocker arm It swinging, and then is moved up with ovable valve stem, separate valve block with valve seat, fuel flows into valve body from the feeding-passage of valve seat, then It is flowed into the main jet of carburetor by the discharge port of valve body side, realizes the without interruption of fuel；Work as engine stop, shell Not by suction function, diaphragm, rocker arm, valve rod automatically reset the closed cavity constituted with diaphragm, are closed valve block and valve seat, from And automatically cut off the supply of fuel.

Preferably, the shut-off valve assemblies include that the shell of valve body and the shut-off valve driving assembly is integrally formed knot Structure.

Preferably, it is provided with attachment base on the discharge port of one side of valve body, the main jet lower end is through the company of being threaded through Bolt pipe fitting on joint chair is connected with discharge port, the upper end of the bolt pipe fitting and the main jet lower end of carburetor body It is connected, the screw rod of the bolt pipe fitting is cored screw, it is provided with cross through hole on the cored screw of its bolt head, The cross through hole is communicated with the discharge port of valve body.

Preferably, another side of the valve body is provided with the fabrication hole for processing discharge port, after processing discharge port, The fabrication hole sealing blocking.

Preferably, blocking on the valve body on the downside of the valve seat has bottom plate.

Preferably, the circumference of the valve block and the inner cavity of valve body are provided with valve block sealing element.

Preferably, the valve rod hole sealing element for plugging valve rod insertion holes is additionally provided on the valve body.

Preferably, the rocker arm is also equipped with rocker arm reset spring.

Preferably, it is provided with enriching mechanism in the middle part of the upper cover, the enriching mechanism includes the enriching spiral shell for being threaded through upper cover Bolt, the screw rod periphery of the enriching bolt are equipped with enriching reset spring, and the upper end of the enriching reset spring is contradicted in enriching On the nut of bolt, the lower end of the enriching reset spring is contradicted on the outer wall of upper cover, and the lower end of the enriching bolt penetrates In upper cover, and the lower end of enriching bolt is equipped with anticreep stop nut.

In order to realize above-mentioned carbureter fuel direct-furnish method, the utility model is also provided: a kind of carbureter fuel direct-furnish Shut-off valve assemblies, including valve body, valve seat, valve block, valve rod and reset spring, a side of the valve body are provided with and carburetor master The discharge port that metering-orifice is connected, the valve block that the inner cavity lower part of the valve body is provided with valve seat and matches with valve seat, the valve seat Middle part is provided with feeding-passage, and the valve block covers on valve seat, is provided with valve rod on the valve block, by valve rod band moving valve plate Lower movement, the upper end of valve rod are pierced by valve body, form valve rod and drive end, are equipped with reset spring on the intracorporal valve rod of valve, multiple The upper end of position spring contradicts in valve body upper inner, and the lower end of reset spring contradicts on valve block.

The utility model has the beneficial effects that the utility model makes full use of the atomizing of carburetor body itself, regardless of Be gaseous state, liquid or gas-liquid mixed state fuel all directly from the main jet of carburetor be sent into, by carburetor body to its into Supply engine after row atomization and concentration proportioning, need to only configure one can supply with the shut-off valve control fuel for starting machine negative pressure to link Remove from after shutting down without configuring other decompressors, heating device etc. in decompressor, heating device etc. to on-off It is detained the waste of fuel in runner.The components for constituting the utility model significantly reduce, and production cost is effectively reduced, and this reality It can be greatly reduced, be occupied little space with novel volume, overall structure is very compact.

Detailed description of the invention

Fig. 1 and Fig. 2 is the schematic perspective view of carbureter fuel direct-furnish assembly.

Fig. 3 is the schematic view of the front view of carbureter fuel direct-furnish assembly.

Fig. 4 is A-A cross-sectional view of shut-off valve assemblies closed state in Fig. 3.

Fig. 5 is A-A cross-sectional view of shut-off valve assemblies open state in Fig. 3.

Fig. 6 is B-B cross-sectional view of shut-off valve assemblies open state in Fig. 3.

Label declaration: 1- shut-off valve assemblies 11- valve body 12- valve seat 12.1- bottom plate 13- valve block 13.1- valve block sealing element 14- valve rod 14.1- valve rod hole sealing element 15- reset spring 16- discharge port 16.1- fabrication hole 16.2- sealing blocking 17- feeding-passage 18- attachment base 19- bolt pipe fitting 20- Cross through hole;

2- shut-off valve driving assembly 21- shell 22- rocker arm 23- diaphragm 24- upper cover 25- venthole 26- negative port 27- enriching mechanism 27.1- enriching bolt 27.2- enriching reset spring 27.3- anticreep limit Position nut;

3- carburetor body 4- main jet.

Specific embodiment

In order to enable the utility model above-mentioned technology contents and construction features more easily by this field general technology people Member is understood, with reference to the accompanying drawing with technical essential to the application further instruction.

Embodiment 1

As shown in Figures 1 to 6, the provided carbureter fuel direct-furnish method of the utility model is using shut-off valve assemblies 1 directly controls the on-off of carbureter fuel, and the feed end of shut-off valve assemblies 1 is connected with fuel feed line, shut-off valve The discharge end of component 1 is connected directly on the main jet of carburetor, and the valve rod 14 of shut-off valve assemblies 1 is by starting machine negative pressure mouth to link Control installs one on the driving end of valve rod 14 and the potential energy for starting machine negative pressure to generate is converted into the machine that valve rod 14 opens and closes kinetic energy Structure.The direction of dotted line and arrow indicates the direction of fuel circulation in Fig. 1.The direction of arrow indicates that fuel feed line connects in Fig. 3 Enter the direction of shut-off valve assemblies 1.

As shown in Figure 5 and Figure 6, work as engine start, the valve rod 14 of shut-off valve assemblies 1 is driven and opened by the negative pressure of engine It opens, the solid line in Fig. 5 with four-headed arrow indicates the atmospheric equilibrium direction of venthole 25, and the solid line with single arrow indicates negative in Fig. 5 The direction for pressing suction, dotted line with the arrow indicates the direction that fuel circulates in valve body when shut-off valve assemblies 1 are opened in Fig. 5.Combustion Expect the fuel in feeding pipe after the valve body 11 of shut-off valve assemblies 1 through to the main jet 4 of carburetor body 3, it is empty in Fig. 6 The direction of line and arrow indicates that fuel directly inputs the direction of the main jet 4 of carburetor body 3 from shut-off valve assemblies 1.By changing Supply engine uses after the atomization of oily device ontology 3 and concentration proportioning；Work as engine stop, the valve rod 14 of shut-off valve assemblies 1 does not have Have and is driven and the closing that automatically resets by the negative pressure of engine.

In the present invention, the fuel flowed in fuel feed line can be fuel gas, be also possible to liquid combustion Material, can also be gas-liquid mixed fuel, but the fuel of either gaseous state, liquid or gas-liquid mixed state is all by directly from carburetion The main jet of device is sent into, without in addition drilling out gas inlet duct on carburetor body, without the other decompression dresses of configuration It sets, the gas supply ancillary equipment such as heating device, the components for constituting the utility model significantly reduce, and production cost is effectively reduced, and And the volume of the utility model can greatly reduce, and occupy little space.

Embodiment 2

In order to realize above-mentioned carbureter fuel direct-furnish method, as shown in Figures 1 to 6, the utility model also provides one kind Carbureter fuel direct-furnish assembly, it includes shut-off valve assemblies 1 and shut-off valve driving assembly 2, and the shut-off valve driving assembly 2 is arranged On the valve rod driving end of shut-off valve assemblies 1, to control the on off operating mode variation of shut-off valve assemblies 1.

As shown in Figures 1 to 6, the shut-off valve assemblies 1 include valve body 11, valve seat 12, valve block 13, valve rod 14 and reset bullet Spring 15, a side of the valve body 11 are provided with the discharge port 16 being connected with the main jet 4 of carburetor body 3, the valve body 11 another side is provided with the fabrication hole 16.1 for processing discharge port 16, after processing discharge port, the fabrication hole sealing Block 16.2.

As shown in Fig. 4 to Fig. 5, valve block that the inner cavity lower part of the valve body 11 is provided with valve seat 12 and matches with valve seat 12 13, blocking on the valve body 11 of 12 downside of the valve seat has bottom plate 12.1.The middle part of the valve seat 12 and bottom plate 12.1 be provided with into Expect channel 17, the valve block 13 covers on valve seat 12, and the circumference of the valve block 13 and the inner cavity of valve body 11 are provided with valve block sealing Part 13.1.It is provided with valve rod 14 on the valve block 12, is moved up and down by valve rod 14 with moving valve plate 13, the upper end of valve rod 14 is pierced by Valve body 11 forms valve rod and drives end, the valve rod hole sealing element for blocking 14 punched out of valve rod is additionally provided on the valve body 11 14.1.Reset spring 15 is equipped on the valve rod 14 in valve body 11, the upper end of reset spring 15 contradicts on 11 top of valve body On inside, the lower end of reset spring 15 is contradicted on valve block 13；Attachment base is provided on the discharge port of 11 1 side of valve body 18, the bolt pipe fitting 19 of 4 lower end of main jet through being threaded through on attachment base 18 is connected with discharge port 16, the bolt tube The upper end of connector 19 is connected with the main jet lower end of carburetor body, and the screw rod of the bolt pipe fitting 19 is cored screw, It is provided with cross through hole on the cored screw of its bolt head, the cross through hole 20 is communicated with the discharge port of valve body.

As shown in Fig. 4 to Fig. 5, the shut-off valve driving assembly 2 includes shell 21, rocker arm 22, diaphragm 23 and upper cover 24, In the present embodiment, the shut-off valve assemblies 1 include that the shell 21 of valve body 11 and the shut-off valve driving assembly 2 is integrally formed knot Structure.The valve rod 14 drives end to protrude into shell 21, and is connected with one end of rocker arm 22, and the middle part of rocker arm 22 is hinged on shell On the hinged seat of 21 inner cavities, the other end of rocker arm 22 is connected with the middle part of diaphragm 23, and venthole 25 is provided in upper cover 24, on The circumference of diaphragm 23 is pressed in the opening of shell 21 by the circumference of lid 24, and diaphragm 23 and shell 21 is made to constitute a closed sky Chamber, the side of the shell 21 are additionally provided with negative port 26, and the negative port 26 leads to what diaphragm 23 was constituted with shell 21 Closed cavity, the negative port 26 with the negative pressure of engine for being connected.

As shown in Fig. 4 to Fig. 5, enriching mechanism 27 is provided in the middle part of the upper cover 24.For ease of description, in the present embodiment In, the enriching mechanism 27 includes the enriching bolt 27.1 for being threaded through upper cover 24, and the screw rod periphery of the enriching bolt is equipped with The upper end of enriching reset spring 27.2, the enriching reset spring contradicts on the nut of enriching bolt, and the enriching resets bullet The lower end of spring contradicts on the outer wall of upper cover, and the lower end of the enriching bolt penetrates in upper cover, and the lower end installation of enriching bolt There is anticreep stop nut 27.3.In other embodiments, enriching mechanism 27 also selects the mechanism substitution of other accessible diaphragms.

In other embodiments, the rocker arm 22 is also equipped with rocker arm reset spring, the specific installation of rocker arm reset spring Position can be set according to actual needs, and main purpose is in order to which rocker arm 22 can more smoothly be resetted.

The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in Other related technical areas are included in the scope of patent protection of the utility model.

Claims

1. a kind of carbureter fuel direct-furnish shut-off valve assemblies, it is characterised in that: the shut-off valve assemblies include valve body, valve seat, valve Piece, valve rod and reset spring, a side of the valve body are provided with the discharge port being connected with carbureter main jet, the valve body The inner cavity lower part valve block that is provided with valve seat and is matched with valve seat, be provided with feeding-passage, the valve block in the middle part of the valve seat It covers on valve seat, is provided with valve rod on the valve block, moved up and down by valve rod band moving valve plate, the upper end of valve rod is pierced by valve body, It forms valve rod and drives end, reset spring is equipped on the intracorporal valve rod of valve, the upper end of reset spring contradicts on valve body top On inside, the lower end of reset spring is contradicted on valve block.

2. carbureter fuel direct-furnish shut-off valve assemblies according to claim 1, it is characterised in that: one side of valve body Attachment base is provided on discharge port, bolt pipe fitting of the main jet lower end through being threaded through on attachment base is connected with discharge port Logical, the upper end of the bolt pipe fitting is connected with the main jet lower end of carburetor body, and the screw rod of the bolt pipe fitting is Cored screw is provided with cross through hole, the discharge port phase of the cross through hole and valve body on the cored screw of its bolt head It is logical.

3. carbureter fuel direct-furnish shut-off valve assemblies according to claim 1, it is characterised in that: another side of the valve body Side is provided with the fabrication hole for processing discharge port, after processing discharge port, the fabrication hole sealing blocking.

4. carbureter fuel direct-furnish shut-off valve assemblies according to claim 1, it is characterised in that: the valve on the downside of the valve seat Blocking on body has bottom plate.

5. carbureter fuel direct-furnish shut-off valve assemblies according to claim 1, it is characterised in that: the circumference of the valve block with The inner cavity of valve body is provided with valve block sealing element.

6. carbureter fuel direct-furnish shut-off valve assemblies according to claim 1, it is characterised in that: also set up on the valve body There is the valve rod hole sealing element for plugging valve rod insertion holes.