CN209761585U - Fuel supply system and flameout fuel cut-off device thereof - Google Patents
Fuel supply system and flameout fuel cut-off device thereof Download PDFInfo
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- CN209761585U CN209761585U CN201920257423.XU CN201920257423U CN209761585U CN 209761585 U CN209761585 U CN 209761585U CN 201920257423 U CN201920257423 U CN 201920257423U CN 209761585 U CN209761585 U CN 209761585U
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- thimble
- valve
- membrane
- valve needle
- supply system
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Abstract
a fuel supply system and flame-out fuel cut-off device thereof, the fuel supply system comprises a flame-out fuel cut-off device, and the flame-out fuel cut-off device comprises: the electromagnetic valve is arranged on a carburetor body of the fuel supply system and controls the opening and closing of an oil inlet pipe of the fuel supply system; the membrane type oil switch is installed on the electromagnetic valve and comprises a membrane, a thimble and an elastic thimble resetting piece, the membrane is connected with the thimble, the thimble is abutted against a valve needle of the electromagnetic valve, the elastic thimble resetting piece is sleeved on the thimble and abutted against the electromagnetic valve, and the thimble is respectively provided with a starting position and an operating position relative to the valve needle; and the shifting fork is arranged on the carburetor body, one end of the shifting fork is connected with the choke valve shaft of the carburetor and controls the opening and closing of the choke valve of the carburetor through the choke valve shaft, and the shifting fork is connected with the membrane type oil switch and controls the ejector pin to be located at the starting position or the running position respectively.
Description
Technical Field
The utility model relates to a fuel feed system, especially a take fuel feed system and this flame-out fuel cut-off device of putting out.
Background
The electromagnetic valve of the existing fuel supply system is in a normally closed state under the condition of not electrifying, the engine is not connected with an external power supply, and the electromagnetic valve needs to be powered by the engine to ensure the work of the electromagnetic valve. The electromagnetic valve is in a normally closed state in an inoperative state, and when the engine needs to be started, the valve needle of the electromagnetic valve cannot be opened due to insufficient voltage, so that the fuel supply system is insufficient in fuel supply, the engine cannot be normally started, and the starting is difficult.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the above-mentioned problem of prior art, provide a take flame-out fuel cut-off device's fuel feed system and this flame-out fuel cut-off device.
In order to achieve the above object, the present invention provides a flameout and fuel cut-off device of a fuel supply system, wherein, comprising:
The electromagnetic valve is arranged on a carburetor body of the fuel supply system and controls the opening and closing of an oil inlet pipe of the fuel supply system;
The membrane type oil switch is installed on the electromagnetic valve and comprises a membrane, a thimble and an elastic thimble resetting piece, the membrane is connected with the thimble, the thimble is abutted against a valve needle of the electromagnetic valve, the elastic thimble resetting piece is sleeved on the thimble and abutted against the electromagnetic valve, and the thimble is respectively provided with a starting position and an operating position relative to the valve needle; and the shifting fork is arranged on the carburetor body, one end of the shifting fork is connected with a choke valve shaft of the carburetor and controls the opening and closing of a choke valve of the carburetor through the choke valve shaft, and the shifting fork is connected with the membrane type oil switch and controls the ejector pin to be located at the starting position or the running position respectively.
The shift fork comprises a shift fork body, a handle, a fixing groove, a stop pin and an oil switch shifting piece, the handle is connected with the shift fork body, the shift fork body is pivoted on the carburetor body through the fixing groove, the oil switch shifting piece is arranged on the shift fork body corresponding to the membrane type oil switch, and the stop pin is arranged on the shift fork body and connected with the choke valve shaft.
In the flameout oil-break device, a boss extends from one side of the shifting fork body, and the stop pin is arranged on the bottom surface of the boss.
In the flameout and oil-cut-off device, the oil switch shifting piece is located on the other side of the shifting fork body opposite to the boss, and the oil switch shifting piece is of a slope structure.
The flameout oil-break device comprises a shaft body and a connecting boss, wherein the connecting boss is located at the top end of the shaft body, a mounting groove is formed in the middle of the shaft body, a windbreak door piece is mounted on the mounting groove, a sliding groove is formed in the connecting boss, a stop pin is inserted into the sliding groove, and two ends of the sliding groove respectively correspond to the fully-opened position and the fully-closed position of the windbreak door piece.
Foretell flame-out fuel cut-off device, wherein, the solenoid valve includes the main part and sets up needle, sealing member and the elasticity needle in the main part resets the piece, the sealing member set up in the top of needle, the sealing member with the needle is together followed the axial of needle is in move in the main part, the elasticity needle resets the cover and establishes on the needle and with the inner wall butt of main part.
The oil switch shifting piece is connected with the membrane type oil switch through a nut, the top end of the main body is provided with a membrane upper cover, the membrane upper cover is provided with a through hole, and the nut penetrates through the through hole, abuts against the membrane and moves axially along the through hole.
In the flameout and oil-cut-off device, the upper part of the ejector pin is provided with the flange, and the membrane is connected with the ejector pin through the flange and drives the ejector pin to move along the axial direction of the ejector pin.
In the flameout and oil-cut-off device, the thimble, the valve needle, the nut and the through hole are axially arranged.
In order to better achieve the above object, the present invention further provides a fuel supply system, which includes the above flameout and fuel cut-off device.
The technical effects of the utility model reside in that:
The utility model discloses a when the engine need start, provide some petrol for fuel oil supply system in advance and guarantee that the engine normally starts. After the engine is started, the valve needle of the electromagnetic valve is opened by voltage generated by the running of the engine, and the normal running of the engine is ensured by continuous oil supply.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Drawings
Fig. 1 is a schematic perspective view of a fuel supply system according to an embodiment of the present invention (a choke flap is fully opened);
Fig. 2 is a schematic perspective view of a fuel supply system according to an embodiment of the present invention (a fully closed position of the choke flap);
Fig. 3 is a cross-sectional view of a flameout and fuel cut-off device according to an embodiment of the present invention (when an engine is started);
Fig. 4 is a cross-sectional view of a flameout and fuel cut-off device according to an embodiment of the present invention (when the engine is running);
Fig. 5 is a schematic view of a three-dimensional structure of a shifting fork according to an embodiment of the present invention;
Fig. 6 is a schematic perspective view of a choke shaft according to an embodiment of the present invention.
Wherein the reference numerals
1 carburetor body
2 choke shaft
21 sliding groove
22 mounting groove
23 shaft body
24 connecting boss
3 choke flap
4 solenoid valve
41 main body
42 elastic valve needle reset piece
43 valve needle
44 seal
5 diaphragm upper cover
6 diaphragm type oil switch
61 nut
62 diaphragm
63 thimble
64 elastic thimble reset piece
7 shifting fork
71 handle
72 oil switch plectrum
73 fixing groove
74 stop pin
75 shifting fork body
8 shifting fork screw
9 oil inlet pipe
Detailed Description
The following describes the structural and operational principles of the present invention in detail with reference to the accompanying drawings:
Referring to fig. 1 and fig. 2, fig. 1 is a perspective view of a fuel supply system according to an embodiment of the present invention (position when the choke flap 3 is fully opened), and fig. 2 is a perspective view of a fuel supply system according to an embodiment of the present invention (position when the choke flap 3 is fully closed, i.e. schematic view of an engine out-of-operation or running state). The utility model provides a take fuel feeding system of flame-out fuel cut-off device, the constitution of other parts of this fuel feeding system, structure, mutual position relation, connection relation and function etc. are more ripe prior art, and the event is no longer repeated here, gives detailed description only to this fuel feeding system's flame-out fuel cut-off device below.
Referring to fig. 3 and 4, fig. 3 is a cross-sectional view of a flameout and fuel cut-off device according to an embodiment of the present invention (when an engine is started, a schematic view of an oil switch and a solenoid valve 4 when the engine is started); fig. 4 is a cross-sectional view of a flameout and fuel cut-off device according to an embodiment of the present invention (schematic view of the oil switch and the electromagnetic valve 4 during engine operation). The utility model discloses a flame-out fuel cut-off device installs on fuel supply system, include: an electromagnetic valve 4 mounted on a carburetor body 1 of a fuel supply system and controlling opening and closing of an inlet pipe 9 of the fuel supply system, the electromagnetic valve 4 including a main body 41, and a needle 43, a seal 44 and an elastic needle return 42 provided in the main body 41, the elastic needle return 42 preferably being a needle spring, the seal 44 preferably being a seal rubber head provided at a tip end of the needle 43, the seal 44 moving in the main body 41 along an axial direction of the needle 43 together with the needle 43, the elastic needle return 42 being fitted over the needle 43 and abutting against an inner wall of the main body 41; the membrane type oil switch 6 is installed on the electromagnetic valve 4, the membrane type oil switch 6 comprises a membrane 62, a thimble 63 and an elastic thimble resetting piece 64, the elastic thimble resetting piece 64 prefers a thimble spring, the membrane 62 is connected with the thimble 63, the thimble 63 abuts against the valve needle 43 of the electromagnetic valve 4, the elastic thimble resetting piece 64 is sleeved on the thimble 63 and abuts against the electromagnetic valve 4, the thimble 63 has a starting position and an operating position respectively relative to the valve needle 43, when the engine is started, the thimble 63 moves downwards to the starting position to open the valve needle 43 of the electromagnetic valve 4, when the engine is started, the thimble 63 returns to the initial position under the resetting action of the thimble spring, namely the operating position of the thimble 63 coincides with the initial position thereof, at this time, the valve needle 43 of the electromagnetic valve 4 is in an open state due to the voltage provided by the engine, the normal operation of the engine can be ensured; and the shifting fork 7 is installed on the carburetor body 1, one end of the shifting fork 7 is connected with the choke shaft 2 of the carburetor and controls the opening and closing of the choke of the carburetor through the choke shaft 2, the other end of the shifting fork 7 is a handle 71 and is used for operating the shifting fork 7 to rotate the choke shaft 2, the shifting fork 7 is connected with the diaphragm type oil switch 6 and controls the ejector pin 63 to be respectively located at the starting position or the running position, namely when the shifting fork 7 rotates to the full-closing position of the choke sheet 3, the ejector pin 63 of the diaphragm type oil switch 6 moves downwards to the starting position, and when the shifting fork 7 rotates to the full-opening position of the choke sheet 3 again, the ejector pin 63 returns to the running position. The upper portion of the thimble 63 is provided with a flange, and the membrane 62 is connected to the thimble 63 through the flange and drives the thimble 63 to move along the axial direction of the thimble 63.
Referring to fig. 5, fig. 5 is a schematic view of a three-dimensional structure of a shifting fork according to an embodiment of the present invention. The shift fork 7 of this embodiment includes a shift fork body 75, a handle 71, a fixing groove 73, a stop pin 74 and an oil switch paddle 72, wherein the handle 71 is connected to the shift fork body 75, the shift fork body 75 is pivotally connected to the carburetor body 1 through the fixing groove 73 and is fixed by a shift fork screw 8, the oil switch paddle 72 is disposed on the shift fork body 75 corresponding to the membrane type oil switch 6, and the stop pin 74 is disposed on the shift fork body 75 and is connected to the choke shaft 2. A boss extends from one side of the shifting fork body 75, and the stop pin 74 is disposed on the bottom surface of the boss. The oil switch shifting sheet 72 is located on the other side of the shifting fork body 75 opposite to the boss. In this embodiment, the oil switch shifting piece 72 is connected to the diaphragm type oil switch 6 through a nut 61, the top end of the main body 41 is provided with a diaphragm upper cover 5, the diaphragm upper cover 5 is provided with a through hole, and the nut 61 passes through the through hole to abut against the diaphragm 62 and moves along the axial direction of the through hole. Preferably, the thimble 63, the needle 43, the nut 61 and the through hole are axially arranged. The oil switch shifting piece 72 is of a slope type structure. As the fork body 75 rotates, the ramped oil switch paddle 72 moves the nut downward to open the solenoid valve needle 43.
Referring to fig. 6, fig. 6 is a schematic view of a three-dimensional structure of a choke shaft according to an embodiment of the present invention. Choke valve axle 2 includes axis body 23 and connection boss 24, it is located to connect boss 24 the top of axis body 23, axis body 23 middle part is provided with mounting groove 22, installation choke flap 3 on the mounting groove 22, be provided with sliding tray 21 on connecting the boss 24, backing pin 74 is inserted and is located in the sliding tray 21, the both ends extreme position of sliding tray 21 corresponds respectively choke flap 3's full-open position and full-close position.
In operation, as shown in fig. 1 and 3, when the fuel supply system is at rest, the fork 7 is at the position of fig. 1, the choke flap 3 is at the fully open position, and the solenoid valve 4 is at the closed state (sealed state). When the engine is to be started, the shifting fork 7 is shifted to rotate to the full-closing position of the choke plate 3 (see fig. 2), at the moment, the oil switch shifting piece 72 on the shifting fork 7 presses the oil switch nut 61 downwards to drive the ejector pin 63 of the membrane type oil switch 6 to move downwards, the valve needle 43 of the electromagnetic valve 4 is opened (see fig. 3), and gasoline enters the pore channel through the oil inlet pipe 9 to the fuel supply system to meet the requirement of starting the engine. When the engine is started, the shift lever 7 is rotated back to the initial position (as shown in fig. 1), and the needle 63 of the diaphragm type oil switch 6 is returned to the initial position by the needle spring (see fig. 4). At this time, the valve needle 43 of the electromagnetic valve 4 is in an open state due to the voltage provided by the engine, and the normal operation of the engine is ensured. When there is no gasoline in the fuel supply system chamber (e.g. new or clean), the choke flap 3 needs to be closed and the fuel needs to be supplied in advance when the engine is started. At this time, the handle 71 of the shifting fork 7 is rotated to drive the choke valve shaft 2 to rotate to the fully closed state of the choke valve sheet 3, and meanwhile, the oil switch shifting sheet 72 on the shifting fork 7 drives the membrane type oil switch to open the valve needle 43 of the electromagnetic valve 4, so that the starting requirement of the engine is met, and the engine is convenient to start.
the utility model discloses a when the engine need start, provide some petrol for fuel oil supply system in advance and guarantee that the engine normally starts. After the engine is started, the valve needle of the electromagnetic valve is opened by voltage generated by the running of the engine, and the normal running of the engine is ensured by continuous oil supply.
naturally, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and it is intended that all such changes and modifications be considered as within the scope of the appended claims.
Claims (10)
1. A flameout and fuel cutoff device of a fuel supply system is characterized by comprising:
The electromagnetic valve is arranged on a carburetor body of the fuel supply system and controls the opening and closing of an oil inlet pipe of the fuel supply system;
the membrane type oil switch is installed on the electromagnetic valve and comprises a membrane, a thimble and an elastic thimble resetting piece, the membrane is connected with the thimble, the thimble is abutted against a valve needle of the electromagnetic valve, the elastic thimble resetting piece is sleeved on the thimble and abutted against the electromagnetic valve, and the thimble is respectively provided with a starting position and an operating position relative to the valve needle; and
and the shifting fork is arranged on the carburetor body, one end of the shifting fork is connected with a choke valve shaft of the carburetor and controls the opening and closing of a choke valve of the carburetor through the choke valve shaft, and the shifting fork is connected with the membrane type oil switch and controls the ejector pin to be respectively located at the starting position or the running position.
2. The flame-out fuel cut-off device as claimed in claim 1, wherein the shift fork includes a shift fork body, a handle, a fixing groove, a stop pin, and an oil switch paddle, the handle is connected to the shift fork body, the shift fork body is pivoted to the carburetor body through the fixing groove, the oil switch paddle is disposed on the shift fork body corresponding to the diaphragm type oil switch, and the stop pin is disposed on the shift fork body and connected to the choke shaft.
3. The flame arrester as claimed in claim 2, wherein a boss extends from one side of the fork body, and the stopper pin is disposed on a bottom surface of the boss.
4. A flame-out oil-cut-off device as defined in claim 3, wherein the oil switch plectrum is located at the other side of the shifting fork body opposite to the boss, and the oil switch plectrum is of a ramp structure.
5. a flameout and oil-break device as claimed in claim 2, 3 or 4, wherein said choke shaft comprises a shaft body and a connecting boss, said connecting boss is located at the top end of said shaft body, a mounting groove is provided in the middle of said shaft body, a choke flap is mounted on said mounting groove, a sliding groove is provided on said connecting boss, said stop pin is inserted into said sliding groove, and two ends of said sliding groove respectively correspond to the fully open position and the fully closed position of said choke flap.
6. The flameout and fuel-cut-off device as claimed in claim 2, 3 or 4, wherein the solenoid valve comprises a main body, a valve needle, a sealing element and an elastic valve needle resetting element, the valve needle, the sealing element and the elastic valve needle resetting element are arranged in the main body, the sealing element is arranged at the top end of the valve needle, the sealing element and the valve needle move in the main body along the axial direction of the valve needle together, and the elastic valve needle resetting element is sleeved on the valve needle and is abutted against the inner wall of the main body.
7. The flame-out oil-cut-off device as claimed in claim 6, wherein the oil switch plectrum is connected with the membrane type oil switch through a nut, the top end of the main body is provided with a membrane upper cover, the membrane upper cover is provided with a through hole, and the nut passes through the through hole to abut against the membrane and moves along the axial direction of the through hole.
8. a flameout and fuel cut-off device as claimed in claim 7, wherein a flange is provided on the upper portion of the thimble, and the membrane is connected to the thimble through the flange and drives the thimble to move along the axial direction of the thimble.
9. A flame-out oil-cut-off device as defined in claim 7, wherein the thimble, the needle, the nut and the through hole are axially arranged.
10. A fuel supply system comprising a flame-out fuel cut-off device as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920257423.XU CN209761585U (en) | 2019-02-28 | 2019-02-28 | Fuel supply system and flameout fuel cut-off device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920257423.XU CN209761585U (en) | 2019-02-28 | 2019-02-28 | Fuel supply system and flameout fuel cut-off device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209761585U true CN209761585U (en) | 2019-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920257423.XU Active CN209761585U (en) | 2019-02-28 | 2019-02-28 | Fuel supply system and flameout fuel cut-off device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622876A (en) * | 2019-02-28 | 2020-09-04 | 华益机电有限公司 | Fuel supply system and flameout fuel cut-off device thereof |
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2019
- 2019-02-28 CN CN201920257423.XU patent/CN209761585U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622876A (en) * | 2019-02-28 | 2020-09-04 | 华益机电有限公司 | Fuel supply system and flameout fuel cut-off device thereof |
| CN111622876B (en) * | 2019-02-28 | 2024-07-23 | 华益机电有限公司 | Fuel supply system and flameout and fuel cut-off device thereof |
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