CN216044056U

CN216044056U - Multi-fuel switching device

Info

Publication number: CN216044056U
Application number: CN202122720977.9U
Authority: CN
Inventors: 余明春; 王锐; 裴俊杰
Original assignee: Chongqing Zongshen General Power Machine Co Ltd
Current assignee: Chongqing Zongshen General Power Machine Co Ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-03-15
Anticipated expiration: 2031-11-09

Abstract

The utility model relates to a fuel switching device, in particular to a multi-fuel switching device which comprises a fuel gas part, wherein the fuel gas part comprises a switching valve, the switching valve comprises a shell with a gas inlet and a gas outlet, a valve core positioned between the gas inlet and the gas outlet is rotatably arranged in the shell, a first gas passage and a second gas passage are arranged on the valve core, the cross sections of the first gas passage and the second gas passage are different in size, and the gas inlet is communicated with the gas outlet by selecting the first gas passage or the second gas passage through rotating the valve core. The scheme solves the problem that the fuel switching device in the prior art cannot adapt to three or more fuels, so that the internal combustion engine cannot keep the optimal working state.

Description

Multi-fuel switching device

Technical Field

The utility model relates to a fuel switching device, in particular to a multi-fuel switching device.

Background

Existing internal combustion engines typically use a liquid fuel and a gaseous fuel when using multiple fuels. The switching between liquid fuel and gaseous fuel is generally realized by a fuel switching device, specifically, by setting corresponding switches on two fuel pipelines for switching off. When the internal combustion engine needs to use three or more fuels and contains two or more gaseous fuels, how to enable the internal combustion engine to achieve the optimal working state is a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-fuel switching device to solve the problem that the fuel switching device in the prior art cannot adapt to three or more fuels, so that an internal combustion engine cannot reach the optimal working state.

In order to achieve the above object, a basic scheme of the present invention provides a multi-fuel switching device, including a gas part, where the gas part includes a switching valve, the switching valve includes a housing having a gas inlet and a gas outlet, a valve core is rotatably disposed inside the housing and located between the gas inlet and the gas outlet, the valve core is provided with a first gas passage and a second gas passage, cross sections of the first gas passage and the second gas passage are different in size, and the first gas passage or the second gas passage is selected to communicate the gas inlet and the gas outlet by rotating the valve core.

The beneficial effect of this basic scheme lies in: by adopting the arrangement, when two gas fuels are switched, the first gas channel or the second gas channel is correspondingly selected to communicate the gas inlet and the gas outlet through the rotation of the valve core, so that the internal combustion engine can keep the optimal working state when using different gas fuels. The arrangement enables an operator to keep the internal combustion engine in the optimal working state only by simple switching operation; meanwhile, the structure of the device is simple, and cost reduction is facilitated.

Further, an inlet opposite to the air inlet is formed in the valve core, the inlet extends along the direction of the rotation axis of the valve core, and the first air passage and the second air passage are communicated with the inlet. By adopting the arrangement, the structure of the valve core is conveniently simplified, so that the processing and manufacturing are convenient, and the cost is reduced.

Further, the contour of the valve core area between one end of the first air passage far away from the inlet and one end of the second air passage far away from the inlet is larger than that of the air outlet. By adopting the arrangement, when the valve core rotates to enable the valve core area between the first air passage and the second air passage to be opposite to the air outlet, the air outlet can be shielded by the cover, so that the disconnection between the air inlet and the air outlet is realized, the simultaneous cutting-off of two gas fuels is realized, and the operation is further convenient.

Furthermore, the shell is rotatably connected with a rotating shaft, the rotating shaft is statically connected with the valve core, and the rotating shaft is statically connected with a gear feedback device. By adopting the arrangement, the position state of the valve core driven by the rotating shaft to rotate can be timely known through the gear feedback device, so that the accuracy of the rotating position of the valve core is conveniently ensured.

Further, keep off position feedback device and include the rotating part, be provided with elasticity butt portion on the rotating part, the quiet connection has the location portion with elasticity butt portion complex on the casing. By adopting the arrangement, the gear feedback device has a simple structure and is beneficial to improving the reliability.

Further, location portion is the recess form, elasticity butt portion includes with rotating part sliding fit's steel ball and the spring of drive steel ball.

Further, still include liquid fuel change over switch, liquid fuel change over switch and case linkage setting. By adopting the arrangement, the liquid fuel and the two gas fuels can be switched simultaneously by rotating the valve core, so that the structure is simplified, and the operation convenience is improved.

Further, liquid fuel change over switch has feed nozzle and ejection of compact mouth, liquid fuel change over switch still includes the rotation portion that sets up with the pivot linkage, the rotation portion is located between feed nozzle and the ejection of compact mouth, be provided with the fuel passageway that realizes feed nozzle and ejection of compact mouth intercommunication through the rotation of rotation portion in the rotation portion.

The carburetor further comprises an electromagnetic valve and an electromagnetic valve switch for controlling the on-off of a main spray pipe of the carburetor, and a protruding part which is linked with the rotating shaft and touches the electromagnetic valve switch. By adopting the arrangement, the oil supply on-off of the carburetor can be synchronously controlled by the rotation of the valve core, so that the operation is convenient.

Further, the flame-out device also comprises a flame-out switch positioned on the side of the rotating shaft and a flame-out raised head which is linked with the rotating shaft and used for triggering the flame-out switch. By adopting the arrangement, the aim of controlling flameout is achieved conveniently through rotation of the rotating shaft, so that the operation is convenient.

Furthermore, the shell is connected with an ignition angle control switch and further comprises a convex block which is linked with the valve core and matched with the ignition angle control switch. By adopting the arrangement, the ignition angle control switch is triggered by the convex block when the valve core rotates, so that the problem of engine power loss caused by using different fuels is solved by controlling the ignition time when using different fuels.

Drawings

FIG. 1 is a schematic view of an embodiment of a multi-fuel switching apparatus of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a plan view of the rotating portion of FIG. 2 with the fuel passage communicating between the feed nozzle and the discharge nozzle;

FIG. 5 is a schematic view of the fuel passageway of the rotating portion of FIG. 4 in a disconnected feed nozzle and discharge nozzle state;

FIG. 6 is a schematic diagram showing the positions of the solenoid switch, the extinguisher switch and the rotating shaft;

fig. 7 is a schematic view of the positioning portion on the housing in fig. 1 being set to a plurality of gears.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the fuel valve comprises a shell 1, an extinguishing switch 2, an electromagnetic valve switch 3, a valve core 4, a rotating shaft 5, a rotating part 8, a rotating part 9, a spring 9a, a steel ball 9b, a positioning part 10, an air inlet 11, an air outlet 12, a feeding nozzle 15, a fuel channel 16, a discharging nozzle 17, a first air channel 41, a second air channel 42, an inlet 43, a bulge 51, an extinguishing convex head 52, an ignition angle control switch 53, a first gas fuel stop C, a machine halt and extinguishing stop O, an oil cut and non-extinguishing stop S, a second gas fuel stop N and a liquid fuel stop F.

The embodiment is substantially as shown in figures 1 to 7 of the accompanying drawings: a multi-fuel switching device comprises a gas burning part, the gas burning part comprises a switching valve, the switching valve comprises a shell 1 with a gas inlet 11 and a gas outlet 12, in the embodiment, the central line of the gas inlet 11 is perpendicular to the central line of the gas outlet 12; a valve core 4 positioned between the air inlet 11 and the air outlet 12 is rotatably arranged in the shell 1, a first air passage 41 and a second air passage 42 are arranged on the valve core 4, and the first air passage 41 and the second air passage 42 are both arranged along the direction vertical to the rotating shaft 5 of the valve core 4; the cross sections of the first air passage 41 and the second air passage 42 are different in size, and the first air passage 41 or the second air passage 42 is selected by rotating the valve core 4 to communicate the air inlet 11 with the air outlet 12. The valve core 4 is provided with an inlet 43 opposite to the air inlet 11, and the inlet 43 extends along the direction of the rotating shaft 5 of the valve core 4, so that the inlet 43 is always communicated with the air inlet 11 when the valve core 4 rotates; the first air passage 41 and the second air passage 42 are both communicated with the inlet 43, so that the first air passage 41 and the second air passage 42 are distributed in a V shape. The contour of the valve core 4 area between the end of the first air passage 41 far away from the inlet 43 and the end of the second air passage 42 far away from the inlet 43 on the valve core 4 is larger than the contour of the air outlet 12, so that the valve core 4 area can cover and block the air outlet 12, and the gas fuel is cut off.

The casing 1 is connected with the pivot 5 in a rotating manner, and the pivot 5 is statically connected with the valve core 4, and in the embodiment, the valve core 4 is provided with a strip-shaped clamping groove, the end part of the pivot 5 is provided with a clamping block matched with the clamping groove in a concave-convex manner, and the clamping groove is clamped by the clamping block to realize synchronous rotation of the pivot 5 and the valve core 4. A gear feedback device is statically connected to the rotating shaft 5, in this embodiment, the gear feedback device includes a rotating portion 9 fixedly connected to the rotating shaft 5, the rotating portion 9 is provided with an elastic abutting portion, and the elastic abutting portion includes a steel ball 9b slidably engaged with the rotating portion 9 along a radial direction of the rotating shaft 5 and a spring 9a driving the steel ball 9 b; the positioning portion 10 is connected to the housing 1 in a stationary manner, and the positioning portion 10 is a groove structure integrally formed with the housing 1, and the steel ball 9b of the elastic abutting portion is clamped into the positioning portion 10 to position the rotating position of the rotating shaft 5, so that the valve element 4 stays at a corresponding gear.

Be connected with liquid fuel change over switch on the casing 1, liquid fuel change over switch has feed nozzle 15 and ejection of compact mouth 17, and liquid fuel change over switch still includes the rotation portion 8 that sets up with the linkage of pivot 5, and in this embodiment, rotation portion 8 is preferred to be the disc, and rotation portion 8 and the coaxial integrated into one piece of pivot 5 rotate the portion 8 and be located between feed nozzle 15 and the ejection of compact mouth 17, is provided with the fuel passageway 16 that realizes feed nozzle 15 and ejection of compact mouth 17 intercommunication through the rotation of rotation portion 8 on the rotation portion 8. In order to improve structural integrity and ease of assembly, the liquid fuel diverter switch shares the housing 1 with the diverter valve, and is disposed between the gear feedback device and the spool 4.

An electromagnetic valve and an electromagnetic valve switch 3 for controlling the on-off of a main nozzle of the carburetor are mounted on the housing 1 at the side of the rotating shaft 5, and a boss 51 for touching the electromagnetic valve switch 3 is provided on the rotating shaft 5. A flameout switch 2 is also arranged on the side of the rotating shaft 5 on the shell 1, and a flameout convex head 52 for triggering the flameout switch 2 is arranged on the rotating shaft 5. Still install ignition angle control switch 53 in the side that lies in pivot 5 on casing 1, the linkage is provided with on case 4 with ignition angle control switch 53 complex lug, in this embodiment, for the convenience of connecting, the lug sets up on pivot 5 to realize the linkage of lug and case 4, the rotation through pivot 5 drives the rotatory certain angle of lug, thereby can have corresponding ignition signal under the fuel condition of using different, thereby it advances or delays to correspond different fuel realization ignition. In order to ensure that the valve core 4 accurately rotates to a corresponding position, the positioning part 10 of the gear feedback device is arranged into a plurality of groove structures which respectively correspond to the liquid fuel gear F, the first gas fuel gear C, the second gas fuel gear N, the oil-cut non-extinguishing gear S and the shutdown extinguishing gear O.

The specific using process is as follows: when the internal combustion engine uses the liquid fuel mode, the convex part 51 is in contact with the electromagnetic valve switch 3, so that the electromagnetic valve switch 3 opens the electromagnetic valve on the main nozzle of the carburetor, meanwhile, the fuel passage 16 on the rotating part 8 communicates the feed nozzle 15 with the discharge nozzle 17, and neither the first air passage 41 nor the second air passage 42 on the valve core 4 communicates with the air inlet 11 nor the air outlet 12, so that the fuel in the carburetor can enter the internal combustion engine for combustion. When the internal combustion engine is switched from the liquid fuel mode to the gas fuel mode, the rotating shaft 5 is rotated to separate the boss part 51 from the electromagnetic valve switch 3, so that the electromagnetic valve on the main nozzle of the carburetor is closed, and simultaneously, the rotating part 8 is also rotated along with the rotating shaft 5 to disconnect the feed nozzle 15 and the discharge nozzle 17, so that the first air passage 41 or the second air passage 42 on the valve core 4 communicates the air inlet 11 with the air outlet 12 (specifically, a common air passage is selected according to the type of gas fuel), at this time, an ignition angle control switch 53 arranged at the side of the rotating shaft 5 is triggered by a bump, the ignition angle control switch 53 identifies the fuel used by the internal combustion engine through the rotating angle of the rotating shaft, and then the corresponding ignition angle is selected based on the used fuel.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a many fuel auto-change over device, includes the gas portion, the gas portion includes the diverter valve, the diverter valve is including the casing that has air inlet and gas outlet, the inside of casing is rotated and is provided with the case that is located between air inlet and the gas outlet, its characterized in that: the valve core is provided with a first air passage and a second air passage, the cross sections of the first air passage and the second air passage are different in size, and the first air passage or the second air passage is selected by rotating the valve core to communicate the air inlet with the air outlet.

2. The multi-fuel switching apparatus of claim 1, wherein: the valve core is provided with an inlet opposite to the air inlet, the inlet extends along the direction of the rotation axis of the valve core, and the first air passage and the second air passage are communicated with the inlet.

3. The multi-fuel switching apparatus of claim 2, wherein: the contour of the valve core area between one end of the first air passage far away from the inlet and one end of the second air passage far away from the inlet is larger than that of the air outlet.

4. The multi-fuel switching apparatus according to any one of claims 1 to 3, characterized in that: the rotary valve is characterized in that a rotating shaft is rotatably connected to the shell, the rotating shaft is statically connected with the valve core, and a gear feedback device is statically connected to the rotating shaft.

5. The multi-fuel switching apparatus of claim 4, wherein: the gear feedback device comprises a rotating part, an elastic abutting part is arranged on the rotating part, and a positioning part matched with the elastic abutting part is statically connected to the shell.

6. The multi-fuel switching apparatus of claim 5, wherein: the positioning part is groove-shaped, and the elastic abutting part comprises a steel ball in sliding fit with the rotating part and a spring for driving the steel ball.

7. The multi-fuel switching apparatus of claim 1, 2, 3, 5 or 6, wherein: the fuel valve also comprises a liquid fuel change-over switch, and the liquid fuel change-over switch is in linkage with the valve core.

8. The multi-fuel switching apparatus of claim 4, wherein: the fuel valve also comprises a liquid fuel change-over switch, and the liquid fuel change-over switch is in linkage with the valve core.

9. The multi-fuel switching apparatus of claim 7, wherein: liquid fuel change over switch has feed nozzle and ejection of compact mouth, liquid fuel change over switch still includes the rotation portion that sets up with the pivot linkage, the rotation position is located between feed nozzle and the ejection of compact mouth, be provided with the fuel passageway that realizes feed nozzle and ejection of compact mouth intercommunication through the rotation of rotation portion in the rotation portion.

10. The multi-fuel switching apparatus of claim 8, wherein: liquid fuel change over switch has feed nozzle and ejection of compact mouth, liquid fuel change over switch still includes the rotation portion that sets up with the pivot linkage, the rotation position is located between feed nozzle and the ejection of compact mouth, be provided with the fuel passageway that realizes feed nozzle and ejection of compact mouth intercommunication through the rotation of rotation portion in the rotation portion.

11. The multi-fuel switching apparatus according to claim 9 or 10, characterized in that: the carburetor also comprises an electromagnetic valve and an electromagnetic valve switch for controlling the on-off of a main spray pipe of the carburetor, and a bulge which is linked with the rotating shaft and touches the electromagnetic valve switch.

12. The multi-fuel switching apparatus of claim 11, wherein: the flame-out switch is arranged on the side of the rotating shaft, and the flame-out raised head is linked with the rotating shaft and used for triggering the flame-out switch.

13. The multi-fuel switching apparatus of claim 1, 2, 3, 5, 6, 8, 9, 10, or 12, wherein: the shell is connected with an ignition angle control switch and further comprises a convex block which is linked with the valve core and matched with the ignition angle control switch.

14. The multi-fuel switching apparatus of claim 4, wherein: the shell is connected with an ignition angle control switch and further comprises a convex block which is linked with the valve core and matched with the ignition angle control switch.

15. The multi-fuel switching apparatus of claim 7, wherein: the shell is connected with an ignition angle control switch and further comprises a convex block which is linked with the valve core and matched with the ignition angle control switch.

16. The multi-fuel switching apparatus of claim 11, wherein: the shell is connected with an ignition angle control switch and further comprises a convex block which is linked with the valve core and matched with the ignition angle control switch.