Fuel oil supply system and manual flameout device thereof

Abstract

A fuel oil supply system and a manual flameout device thereof, the fuel oil supply system comprising a manual flameout device mounted on a float chamber of the fuel oil supply system, the manual flameout device comprising: a valve body mounted on the float chamber corresponding to an oil path of the fuel oil supply system, the valve body is provided with a through hole and a cavity communicated with the through hole. The ejector pin penetrates through the cavity and is mounted in the through hole; the plug is mounted at the opening end of the cavity and sleeves the ejector pin; the sealing large spring is arranged in the cavity and is sleeved on the ejector pin; and the operating handle is installed at the tail end of the ejector pin, and the operating handle drives the ejector pin to be provided with an oil way opening position and an oil way closing position relative to the oil way. The manual flameout device can cut off fuel through manual operation, is simple in structure and low in cost, is stable in structure, does not need to worry about faults, and can ensure normal work of an engine.

Description

Technical Field

[0001] The utility model relates to fuel supply technology, in particular to a fuel supply system and a manual flameout device thereof. Background Art

[0002] When the engine is running and shutting down, the engine is prone to phenomena such as flameout, sputtering, and shaking. To solve such problems, the prior art adds a solenoid valve to the fuel supply system of the engine to block the oil path and prevent sputtering and other situations during shutdown. However, the solenoid valve is expensive and requires the engine to add a battery to ensure the power supply of the solenoid valve, thus increasing the cost of the engine. Moreover, the solenoid valve is prone to electronic failures, resulting in situations where the solenoid valve does not work, affecting the performance of the engine. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a fuel supply system and a manual flameout device thereof in view of the above defects of the prior art.

[0004] To achieve the above object, the utility model provides a manual flameout device, which is installed on the float chamber of the fuel supply system. Among them, it includes:

[0005] A valve body, which is installed on the float chamber corresponding to the oil path of the fuel supply system. A through hole and a cavity communicating with the through hole are provided on the valve body;

[0006] A thimble, which is installed in the through hole through the cavity;

[0007] A plug, which is installed at the opening end of the cavity and sleeved on the thimble;

[0008] A large sealing spring, which is arranged in the cavity and sleeved on the thimble; and

[0009] An operating handle, which is installed at the tail end of the thimble. The operating handle drives the thimble to have an oil path opening position and an oil path closing position respectively relative to the oil path.

[0010] The above-mentioned manual flameout device, wherein, it further includes a first sealing shaft sleeve, which is sleeved on the thimble and located at the front end of the cavity; the front end of the large sealing spring abuts against the first sealing shaft sleeve.

[0011] The above-mentioned manual flameout device, wherein, a sealing ring is arranged between the first sealing shaft sleeve and the cavity.

[0012] The above-mentioned manual flameout device, wherein, it further includes a second sealing shaft sleeve, which is sleeved on the thimble and located at the front end of the plug; the rear end of the large sealing spring abuts against the second sealing shaft sleeve.

[0013] The above-mentioned manual flameout device, wherein a boss is provided on one side of the thimble close to the plug, and the second sealing bushing abuts against the boss.

[0014] The above-mentioned manual flameout device, further comprising a small sealing spring, which is sleeved on the thimble corresponding to the large sealing spring, and both ends of the small sealing spring abut against the first sealing bushing and the boss respectively.

[0015] The above-mentioned manual flameout device, wherein another sealing ring is provided between the second sealing bushing and the plug.

[0016] The above-mentioned manual flameout device, wherein the valve body comprises a threaded cylinder, a hexagonal prism and a cylinder arranged in sequence from front to back, the through hole is arranged in the threaded cylinder and the hexagonal prism, the cavity is arranged in the cylinder, and the threaded cylinder, the hexagonal prism, the cylinder, the through hole and the cavity are all coaxially arranged.

[0017] The above-mentioned manual flameout device, wherein the valve body is connected to the float chamber of the fuel supply system through the threaded cylinder, and a gasket is provided between the valve body and the float chamber.

[0018] In order to better achieve the above object, the present invention also provides a fuel supply system, which includes the above-mentioned manual flameout device.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention can cut off the fuel supply manually, has a simple structure, low manufacturing cost, does not require the engine to increase battery power supply, reduces the cost of the engine, and the manual flameout device has a stable structure, does not need to worry about failures, and can ensure the normal operation of the engine.

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but it is not a limitation to the present invention. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of a fuel supply system according to an embodiment of the present invention;

[0023] Figure 2 It is a schematic structural diagram of a manual flameout device according to an embodiment of the present invention;

[0024] Figure 3 It is a cross-sectional view of a manual flameout device according to an embodiment of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a valve body according to an embodiment of the present invention;

[0026] Figure 5Schematic diagram of the oil passage opening position according to an embodiment of the present utility model;

[0027] Figure 6 Schematic diagram of the oil passage closing position according to an embodiment of the present utility model.

[0028] Among them, the reference numerals

[0029] 1 body

[0030] 2 float chamber

[0031] 3 gasket

[0032] 4 manual flameout device

[0033] 41 thimble

[0034] 411 boss

[0035] 42 valve body

[0036] 421 threaded cylinder

[0037] 422 hexagonal prism

[0038] 423 cylinder

[0039] 424 cavity

[0040] 43 sealing ring

[0041] 44 first sealing shaft sleeve

[0042] 45 sealing large spring

[0043] 46 sealing small spring

[0044] 47 plug

[0045] 48 operating handle

[0046] 49 second sealing shaft sleeve

[0047] 5 gasket

[0048] 6 sealing ring

[0049] 7 connecting bolt Specific embodiments

[0050] The structural principle and working principle of the present invention will be specifically described below in conjunction with the accompanying drawings:

[0051] See Figure 1 , Figure 1Schematic structural diagram of a fuel supply system according to an embodiment of the present utility model. The main difference between the fuel supply system of the present utility model and the prior art is that it includes a manual flameout device 4, which is horizontally locked on the float chamber 2, and the two are sealed by a gasket 5; the float chamber 2 and the body 1 are connected and fixed by a connecting bolt 7, and a gasket 3 is assembled between the float chamber 2 and the body 1 for sealing, and a sealing ring 6 is assembled between the float chamber 2 and the bolt to play a sealing role. The composition, structure, mutual positional relationship, connection relationship and functions of other parts of the fuel supply system are all relatively mature prior arts, so they will not be elaborated here. Only the manual flameout device 4 of the present utility model will be described in detail below.

[0052] See Figure 2 and Figure 3 , Figure 2 Schematic structural diagram of the manual flameout device 4 according to an embodiment of the present utility model, Figure 3 Cross-sectional view of the manual flameout device 4 according to an embodiment of the present utility model. The manual flameout device 4 of the present utility model is installed on the float chamber 2 of the fuel supply system and includes: a valve body 42, which is installed on the float chamber 2 corresponding to the oil path of the fuel supply system, and a through hole and a cavity 424 communicating with the through hole are provided on the valve body 42; a thimble 41, which is inserted into the cavity 424 and the through hole, and both ends of the thimble 41 extend out of the valve body 42; a plug 47, which is installed at the open end of the cavity 424 and sleeved on the thimble 41; a large sealing spring 45, which is arranged in the cavity 424 and sleeved on the thimble 41; and an operating handle 48, which is installed at the tail end of the thimble 41, and the operating handle 48 drives the thimble 41 to have an oil path open position and an oil path closed position relative to the oil path respectively. When in the oil path open position, the top end of the thimble 41 is located at the initial position, away from the oil inlet hole of the oil path; when in the oil path closed position, the top end of the thimble 41 plugs the oil inlet hole of the oil path.

[0053] In this embodiment, it further includes a first sealing shaft sleeve 44, which is sleeved on the thimble 41 and located at the front end of the cavity 424; the front end of the large sealing spring 45 abuts against the first sealing shaft sleeve 44. It may further include a second sealing shaft sleeve 49, which is sleeved on the thimble 41 and located at the front end of the plug 47; the rear end of the large sealing spring 45 abuts against the second sealing shaft sleeve 49. A boss 411 is provided on the side of the thimble 41 close to the plug 47, and the second sealing shaft sleeve 49 abuts against the boss 411.

[0054] This embodiment may also include a small sealing spring 46, which is mounted on the ejector pin 41 in correspondence with the large sealing spring 45. The two ends of the small sealing spring 46 respectively abut against the first sealing sleeve 44 and the boss 411. A sealing ring 43 is disposed between the first sealing sleeve 44 and the cavity 424. Another sealing ring 43 is disposed between the second sealing sleeve 49 and the plug 47.

[0055] See also Figure 4 , Figure 4 The figure below is a schematic diagram of the structure of a valve body 42 according to one embodiment of the present invention. The valve body 42 comprises, from front to back, a threaded cylinder 421, a hexagonal prism 422, and a cylindrical body 423. The through-holes are located within the threaded cylinder 421 and the hexagonal prism 422, and the cavity 424 is located within the cylindrical body 423. The threaded cylinder 421, the hexagonal prism 422, the cylindrical body 423, the through-hole, and the cavity 424 are all coaxially arranged. The valve body 42 is connected to the float chamber 2 of the fuel supply system via the threaded cylinder 421. A sealing gasket 5 is provided between the valve body 42 and the float chamber 2.

[0056] During installation, the ejector pin 41 is sequentially covered with the small sealing spring 46, the first sealing sleeve 44 and the sealing ring 43, and then installed into the valve body 42. Then, the large sealing spring 45, the second sealing sleeve 49 and another sealing ring 43 are sequentially covered, and then the plug 47 is riveted into the cavity 424 port of the valve body 42. Finally, the operating handle 48 is assembled onto the ejector pin 41.

[0057] See also Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the oil circuit opening position of an embodiment of the utility model. Figure 6 The figure is a schematic diagram of the oil circuit closing position of an embodiment of the present invention. During operation, the oil circuit can be cut off by pressing the operating handle 48 to the oil circuit closing position, which is simple to operate. After releasing it, the operating handle 48 automatically returns to the initial position, i.e., the oil circuit opening position, due to the force of the large sealing spring 45. When the engine is running, the manual flameout device 4 is in the initial position, i.e., the oil circuit opening position, and the fuel supply system is in the oil circuit opening state. When the engine is ready to be flameouted, since the oil circuit is in the opening state during the flameout process, the fuel is still in the consumption state. At this time, the flameout engine is prone to flameout, vomiting, shaking, etc. At this time, pressing the operating handle 48 of the manual flameout device 4 to the oil circuit closing position will cut off the oil circuit. No fuel will continue to be consumed during the flameout process, and the flameout is smooth with stable performance.

[0058] The utility model can adopt manual operation to cut off fuel. It has a simple structure and low manufacturing cost. The engine does not need to increase battery power supply, which reduces the cost of the engine. Moreover, the manual flameout device 4 has a stable structure, so there is no need to worry about failures, and it can ensure the normal operation of the engine.

[0059] Of course, the utility model can also have many other embodiments. Without departing from the spirit and essence of the utility model, those skilled in the art can make various corresponding changes and deformations according to the utility model. However, these corresponding changes and deformations should all fall within the protection scope of the appended claims of the utility model.

Claims

1. A manual flameout device is installed on the float chamber of the fuel supply system, characterized in that, Comprising: A valve body, which is installed on the float chamber corresponding to the oil path of the fuel supply system, and a through hole and a cavity communicating with the through hole are provided on the valve body; A thimble, which is installed in the through hole through the cavity; A plug, which is installed at the open end of the cavity and sleeved on the thimble; A large sealing spring, which is arranged in the cavity and sleeved on the thimble; and An operating handle, which is installed at the tail end of the thimble, and the operating handle drives the thimble to have an oil path opening position and an oil path closing position relative to the oil path respectively.

2. The manual flameout device according to claim 1, characterized in that, It further includes a first sealing bushing, which is sleeved on the thimble and located at the front end of the cavity; the front end of the large sealing spring abuts against the first sealing bushing.

3. The manual flameout device according to claim 2, characterized in that, A sealing ring is arranged between the first sealing bushing and the cavity.

4. The manual flameout device according to claim 2, characterized in that, It further includes a second sealing bushing, which is sleeved on the thimble and located at the front end of the plug; the rear end of the large sealing spring abuts against the second sealing bushing.

5. The manual flameout device according to claim 4, characterized in that, A boss is arranged on one side of the thimble close to the plug, and the second sealing bushing abuts against the boss.

6. The manual flameout device according to claim 5, characterized in that, It further includes a small sealing spring, which is sleeved on the thimble corresponding to the large sealing spring, and both ends of the small sealing spring abut against the first sealing bushing and the boss respectively.

7. The manual flameout device according to claim 4, wherein, Another sealing ring is arranged between the second sealing bushing and the plug.

8. The manual flameout device according to claim 1, wherein The valve body includes a threaded cylinder, a hexagonal prism and a cylinder arranged in sequence from front to back, the through hole is arranged in the threaded cylinder and the hexagonal prism, the cavity is arranged in the cylinder, and the threaded cylinder, the hexagonal prism, the cylinder, the through hole and the cavity are all coaxially arranged.

9. The manual flameout device according to claim 8, wherein, The valve body is connected to the float chamber of the fuel supply system through the threaded cylinder, and a gasket is arranged between the valve body and the float chamber.

10. A fuel supply system, characterized in that, It includes the manual flameout device according to any one of claims 1-9.

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