CN113074066B - High temperature resistant self-circulation device - Google Patents
High temperature resistant self-circulation device Download PDFInfo
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- CN113074066B CN113074066B CN202110516827.8A CN202110516827A CN113074066B CN 113074066 B CN113074066 B CN 113074066B CN 202110516827 A CN202110516827 A CN 202110516827A CN 113074066 B CN113074066 B CN 113074066B
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- diaphragm
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- 230000007704 transition Effects 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 21
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 122
- 230000009471 action Effects 0.000 description 7
- 230000010349 pulsation Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/02—Floatless carburettors
- F02M17/04—Floatless carburettors having fuel inlet valve controlled by diaphragm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention belongs to the technical field of gasoline engines, and relates to a high-temperature-resistant self-circulation device which comprises a body part, a middle lower body part and a lower cover part, wherein the body part comprises a body, a negative pressure hole is formed in the body, a negative pressure cavity is formed in the body, a main oil outlet hole is formed in the body, an idle oil outlet hole is formed in the body, a third transition hole is formed in the body, a second transition hole is formed in the body, and a first transition hole is formed in the body. The high-temperature-resistant self-circulation device has the beneficial effects that the membrane type design structure is adopted, the original float type structure is abandoned, the negative pressure oil inlet mode is adopted in the oil inlet mode, the forced oil inlet condition caused by the change of oil pressure of the float type structure can be effectively avoided, meanwhile, the oil leakage phenomenon caused by rich oil is also avoided, and the high-temperature-resistant self-circulation device has high safety and controllability.
Description
Technical Field
The invention belongs to the technical field of gasoline engines, and particularly relates to a high-temperature-resistant self-circulation device.
Background
In recent years, the requirements of large main engine factories on the safety performance of general gasoline engines are higher and higher, traditional general small gasoline engine carburetors adopt a float type structure, an oil inlet system of the structure is a dynamic balance system, a float drives a needle valve to continuously adjust a gap between a needle valve and a valve seat to control the oil inlet amount under the action of the buoyancy of gasoline in a float chamber, so that the engine keeps dynamic stability of the oil level in the float chamber under various working conditions, and the carburetor of the structure has unstable oil level under the condition of relatively bad working environment, is easy to generate serious oil leakage phenomenon, namely the oil leakage phenomenon is caused by the damage of the balance system, and the oil leakage of the carburetor not only increases the oil consumption and affects the performance of the whole gasoline engine, but also causes relatively great harm to the safety of the engine.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides a high-temperature-resistant self-circulation device, which solves the technical problem that serious oil leakage easily occurs due to the fact that an oil plane is rough.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high temperature resistant self-circulation device, includes body part, well lower body part and lower cover part, the body part includes the body, the negative pressure hole has been seted up to the inside of body, the inside of body is provided with the negative pressure chamber, the inside of body is provided with main oil outlet, idle oil outlet has been seted up to the inside of body, the third transitional hole has been seted up to the inside of body, the second transitional hole has been seted up to the inside of body, first transitional hole has been seted up to the inside of body, negative pressure pipe has been worn to the inside of body, the main measuring hole has been seted up to the inside of body, the inside of body is provided with the sealing washer, the inside fixedly connected with main nozzle part of body, well lower body part sets up in the bottom of body part, well lower body part includes the lower body, the inside of lower body is provided with the air chamber, the inside of lower body is provided with well lower body inlet port, the lower body is internally provided with a lower body oil storage cavity, the lower surface of the lower body is provided with a pump cover gasket, the lower surface of the pump cover gasket is provided with a pump cover diaphragm, the lower surface of the pump cover diaphragm is provided with a pump cover, the inside of the pump cover is provided with a pump cover oil cavity, the lower cover part is arranged at the bottom end of the middle lower body part and comprises a negative pressure pump cover, the inside of the negative pressure pump cover is provided with a negative pressure pump cover negative pressure cavity, the side surface of the negative pressure pump cover is provided with a pagoda spring, the side surface of the pagoda spring is provided with a negative pressure pump cover gasket, the side surface of the negative pressure pump cover gasket is provided with a negative pressure pump cover diaphragm oil inlet check valve and a negative pressure pump cover diaphragm oil outlet check valve, the side surface of the negative pressure pump cover is provided with a lower cover, the inside of the lower cover is provided with a lower cover oil inlet hole, the inside of lower cover has been seted up the lower cover fuel oil pocket, the lower cover oil storage pocket has been seted up to the inside of lower cover, the inside of lower body is worn to have had into oil pipe, it is connected with pump cover oil pocket to advance oil pipe, advance oil pipe and wear to establish in the inside of lower cover.
As a further aspect of the invention: the inside of body has seted up the body inlet port, the body inlet port sets up the top at main nozzle part, the inside of body is provided with idle measuring hole, the inside of body is provided with the air throttle, negative pressure hose has been cup jointed on the surface of negative pressure pipe.
As a further aspect of the invention: the pump cover is characterized in that a pump cover diaphragm oil inlet check valve and a pump cover diaphragm oil outlet check valve are arranged in the pump cover diaphragm, a pump cover air inlet hole is formed in the pump cover, and a pump cover fuel cavity is formed in the pump cover.
As a further aspect of the invention: the pump cover oil storage cavity is formed in the pump cover, the metering chamber gasket is arranged on the lower surface of the pump cover, the needle valve diaphragm part is arranged on the lower surface of the metering chamber gasket, and the metering chamber connecting cover is arranged on the lower surface of the needle valve diaphragm part.
As a further aspect of the invention: the inside of measuring room connecting cover has seted up the measuring room chamber, measuring room connecting cover's surface has cup jointed measuring room cover clamp plate, the inside of lower body wears to be equipped with into oil feed return bend.
As a further aspect of the invention: the inside of lower body is provided with the needle valve, the inside of lower body is provided with the needle valve spring, the inside of lower body is provided with the needle valve rocking arm, the inside of lower body is provided with pump membrane return tower spring.
As a further aspect of the invention: the inside of lower cover is worn to be equipped with the oil drain screw, oil drain pipe is worn to be equipped with in the inside of lower cover, oil outlet pipe is worn to be equipped with in the inside of lower cover, the inside of lower cover is worn to be equipped with the negative pressure branch pipe, the other end of negative pressure branch pipe wears to establish in the inside of negative pressure rubber tube.
As a further aspect of the invention: the inside of lower cover is worn to be equipped with the oil drain screw, oil drain pipe is worn to be equipped with in the inside of lower cover, oil outlet pipe is worn to be equipped with in the inside of lower cover, the inside of lower cover is worn to be equipped with the negative pressure branch pipe, the other end of negative pressure branch pipe wears to establish in the inside of negative pressure rubber tube.
Compared with the prior art, the invention has the beneficial effects that:
1. The high-temperature-resistant self-circulation device adopts a diaphragm type design structure, an original float type structure is abandoned, a negative pressure oil inlet mode is adopted in an oil inlet mode, the forced oil inlet condition caused by the change of oil pressure of the float type structure can be effectively avoided, meanwhile, the oil leakage phenomenon caused by rich oil is also avoided, and the high-temperature-resistant self-circulation device has high safety and controllability;
2. According to the high-temperature-resistant self-circulation device, the lower body is arranged, so that fuel in the carburetor can be recovered into the engine oilcan to perform reciprocating self-circulation operation, the fuel in the oil storage area of the lower cover is ensured to flow, heat dissipation and cooling of the fuel are facilitated, and pressure relief action can be performed while oil is returned, so that pressure generated in the working process in the cavity is relieved;
3. This high temperature resistant self-loopa device through setting up negative pressure pump cover negative pressure chamber and lower cover oil storage chamber can be fine reduce the operating temperature of carburetor to this device's oil feed structure and main part separation, the mid junction portion adopts plastics material to connect simultaneously, can guarantee the oil consumption loss of engine in the course of the work, satisfies the full load operation of engine.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a three-dimensional structure of the present invention;
FIG. 2 is a schematic view of the structure of the middle lower body part in front section in the present invention;
FIG. 3 is a schematic side view in cross section of the lower cover part of the present invention;
FIG. 4 is a schematic view of the body member of the present invention in elevation and cross section;
FIG. 5 is a schematic elevational view in cross-section of another body member in accordance with the present invention;
FIG. 6 is a schematic elevational view in cross-section of another body member in accordance with the present invention;
FIG. 7 is a schematic side view in cross section of a body member of the present invention;
FIG. 8 is a schematic top view of a lower cover member of the present invention;
FIG. 9 is a schematic side view in cross section of a lower cover member of the present invention;
FIG. 10 is a schematic view of the structure of the lower cover member of the present invention in front cross section;
In the figure: 1. a body member; 11. a body; 1101. a negative pressure hole; 1102. a negative pressure chamber; 1103. a main oil outlet hole; 1104. an idle oil outlet hole; 1105. a third transition aperture; 1106. a second transition aperture; 1107. a first transition aperture; 12. a negative pressure pipe; 13. a primary metering orifice; 14. a seal ring; 15. a main nozzle member; 16. a body air inlet hole; 17. an idle speed measuring hole; 18. a throttle valve; 19. negative pressure rubber tube; 2. a middle lower body part; 21. a lower body; 2101. a gas chamber; 2102. an air inlet hole of the middle and lower body; 2103. a lower body oil storage cavity; 22. a pump cover gasket; 23. a pump cover membrane; 2301. a pump cover diaphragm oil inlet one-way valve; 2302. a pump cover diaphragm oil outlet one-way valve; 24. a pump cover; 2401. the pump covers the oil chamber; 2402. a pump cover air inlet hole; 2403. a fuel cavity of the pump cover; 2404. a pump cover oil storage cavity; 25. a metering chamber gasket; 26. a needle valve diaphragm member; 27. the metering chamber is connected with the cover; 2701. a metering chamber cavity; 28. a metering chamber cover platen; 29. an oil inlet pipe; 210. an oil inlet elbow; 211. a needle valve seat; 212. a needle valve; 213. a needle valve spring; 214. needle valve rocker arm; 215. a pump membrane returns to a tower spring; 3. a lower cover member; 31. a negative pressure pump cover; 3101. a negative pressure pump cover negative pressure cavity; 32. a pagoda spring; 33. negative pressure pump cover gasket; 34. negative pressure pump cover diaphragm; 3401. a negative pressure pump cover diaphragm oil inlet one-way valve; 3402. a negative pressure pump cover diaphragm oil outlet one-way valve; 35. a lower cover; 3501. an oil inlet hole of the lower cover; 3502. a lower cover fuel cavity; 3503. a lower cover Chu Youqiang; 36. an oil drain screw; 37. an oil drain pipe; 38. an oil outlet pipe; 39. negative pressure branch pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-10, the present invention provides the following technical solutions: a high temperature resistant self-circulation device comprises a body part 1, a middle lower body part 2 and a lower cover part 3, adopts a diaphragm type design structure, abandons the original float type structure, adopts a negative pressure oil inlet mode, can effectively avoid forced oil inlet condition caused by change of oil pressure of a float type structure, simultaneously avoids oil leakage caused by rich oil, has stronger safety and controllability, the body part 1 comprises a body 11, the inside of the body 11 is provided with a negative pressure hole 1101, the inside of the body 11 is provided with a negative pressure cavity 1102, the inside of the body 11 is provided with a main oil outlet 1103, An idle oil outlet 1104 is formed in the body 11, a third transition hole 1105 is formed in the body 11, a second transition hole 1106 is formed in the body 11, a first transition hole 1107 is formed in the body 11, a negative pressure pipe 12 is arranged in the body 11 in a penetrating mode, a main measuring hole 13 is formed in the body 11, a sealing ring 14 is arranged in the body 11, a main nozzle part 15 is fixedly connected to the body 11, a middle lower body part 2 is arranged at the bottom end of the body part 1, the middle lower body part 2 comprises a lower body 21, fuel in a carburetor can be recovered into an engine oil can through arranging the lower body 21, The reciprocating self-circulation operation is carried out to ensure that the fuel in the oil storage area of the lower cover 35 flows, is beneficial to heat dissipation and cooling of the fuel, can carry out pressure relief action while returning oil to relieve pressure generated in the working process in the cavity, the inside of the lower body 21 is provided with an air chamber 2101, the inside of the lower body 21 is provided with a middle lower body air inlet 2102, the inside of the lower body 21 is provided with a lower body oil storage cavity 2103, the lower surface of the lower body 21 is provided with a pump cover gasket 22, the lower surface of the pump cover gasket 22 is provided with a pump cover diaphragm 23, the lower surface of the pump cover diaphragm 23 is provided with a pump cover 24, the inside of the pump cover 24 is provided with a pump cover oil cavity 2401, the lower cover part 3 is arranged at the bottom end of the middle lower body part 2, the lower cover part 3 comprises a negative pressure pump cover 31, a negative pressure pump cover negative pressure cavity 3101 is arranged in the negative pressure pump cover 31, a pagoda spring 32 is arranged on the side surface of the negative pressure pump cover 31, a negative pressure pump cover gasket 33 is arranged on the side surface of the pagoda spring 32, a negative pressure pump cover diaphragm 34 is arranged on the side surface of the negative pressure pump cover gasket 33, a negative pressure pump cover diaphragm oil inlet check valve 3401 and a negative pressure pump cover diaphragm oil outlet check valve 3402 are arranged in the negative pressure pump cover diaphragm 34, a lower cover 35 is arranged on the side surface of the negative pressure pump cover 31, a lower cover oil inlet port 3501 is arranged in the lower cover 35, The lower cover fuel oil cavity 3502 has been seted up to the inside of lower cover 35, lower cover oil storage cavity 3503 has been seted up to the inside of lower cover 35, through setting up negative pressure pump cover negative pressure cavity 3101 and lower cover oil storage cavity 3503 can fine reduction carburetor's operating temperature, and this device's oil feed structure and main part separation, the mid junction portion adopts plastics material to be connected simultaneously, can guarantee the oil consumption loss of engine in the course of the work, satisfy the full load operation of engine, the inside of lower body 21 is worn to be equipped with into oil pipe 29, into oil pipe 29 and pump cover oil chamber 2401 are connected, advance oil pipe 29 wears to establish in the inside of lower cover 35.
Specifically, a body air inlet 16 is formed in the body 11, the body air inlet 16 is arranged at the top end of the main nozzle component 15, an idle speed measuring hole 17 is formed in the body 11, a throttle valve 18 is arranged in the body 11, and a negative pressure rubber tube 19 is sleeved on the surface of the negative pressure tube 12.
Specifically, a pump cover diaphragm oil inlet check valve 2301 and a pump cover diaphragm oil outlet check valve 2302 are disposed in the pump cover diaphragm 23, a pump cover air inlet 2402 is disposed in the pump cover 24, and a pump cover fuel cavity 2403 is disposed in the pump cover 24.
Specifically, a pump cover oil storage cavity 2404 is formed in the pump cover 24, a metering chamber gasket 25 is arranged on the lower surface of the pump cover 24, a needle valve 212 diaphragm member 26 is arranged on the lower surface of the metering chamber gasket 25, and a metering chamber connecting cover 27 is arranged on the lower surface of the needle valve 212 diaphragm member 26.
Specifically, a metering chamber cavity 2701 is formed in the metering chamber connecting cover 27, a metering chamber cover pressing plate 28 is sleeved on the surface of the metering chamber connecting cover 27, and an oil inlet elbow 210 is arranged in the lower body 21 in a penetrating manner.
Specifically, the needle valve 212 is disposed inside the lower body 21, the needle valve spring 213 is disposed inside the lower body 21, the needle valve rocker 214 is disposed inside the lower body 21, and the pump film return tower spring 215 is disposed inside the lower body 21.
Specifically, the oil drain screw 36 is arranged in the lower cover 35 in a penetrating manner, the oil drain pipe 37 is arranged in the lower cover 35 in a penetrating manner, the oil outlet pipe 38 is arranged in the lower cover 35 in a penetrating manner, the negative pressure branch pipe 39 is arranged in the lower cover 35 in a penetrating manner, and the other end of the negative pressure branch pipe 39 is arranged in the negative pressure rubber pipe 19 in a penetrating manner.
The working principle of the invention is as follows:
When the device is used, firstly, air inlet pulsation is directly transmitted to one side of an air chamber 2101 of a pump cover oil chamber 2401 through a negative pressure hole 1101 and a negative pressure cavity 1102 on a body 11 of the device, the other side of the air chamber 2101 is provided with the pump cover oil chamber 2401 and is connected with an oil inlet pipe 29, meanwhile, an oil way of a pump cover fuel cavity 2403 is provided with a pump cover diaphragm oil inlet one-way valve 2301 and a pump cover diaphragm oil outlet one-way valve 2302, when an engine rotates, air cylinder pulsation negative pressure reaches the fuel cavity through an air inlet hole on the body 11, and reaches the fuel cavity through a main nozzle, a main metering hole 13, a middle lower body air inlet 2102 and the pump cover air inlet 2402, so as to drive a needle 212 diaphragm part 26 to move upwards, pull an upper needle valve rocker arm 214 to open the needle 212, so that oil inlet is realized under the repeated action of the air cylinder pulsation negative pressure of the engine, and suction generated after the engine starts is transmitted to the pump cover fuel cavity 24 through an idle oil outlet 1104, a first transition hole 1107, a second transition hole 1106, a third transition hole 1105, a main oil outlet 1103 on the body 11, a main air inlet hole 21 on the middle lower body 21 and an air inlet hole on the pump cover 24, and the needle valve 24, and the air inlet hole on the needle 212, the needle valve 212, the needle 212, the diaphragm part 26 and the needle valve 212 are driven upwards, and the needle valve 212 and move upwards through the main oil chamber diaphragm part of the main oil chamber 1103, so as to overcome the negative pressure metering part and the needle diaphragm part and the air chamber and the needle valve diaphragm part;
S2, when the device is in an idle working condition, the throttle valve 18 is basically closed, fuel enters the engine through the idle measuring hole 17 from the idle oil outlet hole 1104 and the first transition hole 1107, when the device is in the transition working condition, the opening of the throttle valve 18 is increased, the engine speed is increased, fuel is sprayed out of the second transition hole 1106 and the third transition hole 1105 behind the throttle valve 18 at the same time and enters the engine, when the device is in a high-speed working condition, the oil supply quantity is regulated by the size of the main measuring hole 13, the air flow rate flowing through the negative pressure rubber tube 19 is increased along with the further opening of the throttle valve 18 from the transition position to the full opening position, the oil flow rate is increased along with the requirement of engine load, the action of the needle valve 212 diaphragm part 26 is the same as that of the needle valve 212 diaphragm part 26 in the idle working condition, and the pressure change on the needle valve 212 diaphragm part 26 is realized through the main oil outlet hole 1103;
S3, when the engine starts to operate, air inlet pulsation generated directly passes through a negative pressure pipe 12 on the body 11 of the device, the air inlet pulsation is connected with a negative pressure branch pipe 39 on the negative pressure pump cover 31 through flexible connection of a negative pressure rubber pipe 19, then the air inlet pulsation is transmitted into a negative pressure cavity 3101 of the negative pressure pump cover through a corresponding pore canal, the negative pressure cavity 1102 is internally provided with a pressure difference under the action of the dynamic force to enable a negative pressure pump cover diaphragm 34 to move upwards, so that the fuel is powered to open an oil inlet one-way valve 3401, so that the fuel enters the negative pressure cavity 3101 from an oil inlet position through an oil outlet hole on the negative pressure pump cover gasket 33, an oil storage cavity on the negative pressure pump cover 31, an oil outlet one-way valve 3402 and a corresponding pore canal, the fuel flows out of an oil outlet pipe 38 on the negative pressure pump cover 31 through repeated action of the air inlet pulsation, finally flows back into an oil tank of the engine, and the oil inlet composite rubber pipe on the engine is connected with an oil inlet elbow 210 on a lower body 21, the oil pot switch is opened, the fuel sequentially passes through the oil inlet hole on the oil inlet 210, the oil inlet cavity 21 on the elbow, the lower body 21 and the oil inlet cavity 35 on the oil inlet cavity are filled up and the oil inlet cavity 24 in the oil inlet cavity, and the oil storage cavity is kept stable under the pressure state in the air inlet cavity and the air inlet cavity is filled in the oil storage cavity and the oil storage cavity is stable in the air pressure state.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (7)
1. The utility model provides a high temperature resistant self-loopa device, includes body part (1), well lower body part (2) and lower cover part (3), its characterized in that: the body part (1) comprises a body (11), negative pressure holes (1101) are formed in the body (11), a negative pressure cavity (1102) is formed in the body (11), a main oil outlet (1103) is formed in the body (11), an idle oil outlet (1104) is formed in the body (11), a third transition hole (1105) is formed in the body (11), a second transition hole (1106) is formed in the body (11), a first transition hole (1107) is formed in the body (11), a negative pressure pipe (12) is arranged in the body (11) in a penetrating mode, a main measuring hole (13) is formed in the body (11), a sealing ring (14) is arranged in the body (11), a main nozzle part (15) is fixedly connected in the body (11), a middle lower body part (2) is arranged at the bottom end of the body part (1), the middle lower body part (2) comprises a lower body (21), an air inlet hole (21) is formed in the body (21), a lower air inlet hole (2103) is formed in the body (21), and a gasket (2103) is arranged in the lower body (21), the lower surface of pump cover gasket (22) is provided with pump cover diaphragm (23), the lower surface of pump cover diaphragm (23) is provided with pump cover (24), pump cover oil cavity (2401) has been seted up to the inside of pump cover (24), lower cover part (3) set up in the bottom of well lower body part (2), lower cover part (3) include negative pressure pump cover (31), negative pressure pump cover negative pressure chamber (3101) has been seted up to the inside of negative pressure pump cover (31), the side of negative pressure pump cover (31) is provided with pagoda spring (32), the side of pagoda spring (32) is provided with negative pressure pump cover gasket (33), the side of negative pressure pump cover gasket (33) is provided with negative pressure pump cover diaphragm (34), negative pressure pump cover diaphragm oil feed check valve (3401) and negative pressure pump cover oil outlet check valve (3402) are provided with in the inside, the side of negative pressure pump cover (31) is provided with lower cover (35), the inside of lower cover (35) is provided with oil feed hole (3501), oil feed pipe (3501) is seted up under oil feed cavity (3501), oil feed pipe (3501) is connected under the inside of cavity (3501), oil storage pipe (3501) is opened down, the oil inlet pipe (29) is arranged in the lower cover (35) in a penetrating way.
2. The high temperature resistant self-circulating apparatus of claim 1, wherein: the novel air inlet valve is characterized in that a body air inlet hole (16) is formed in the body (11), the body air inlet hole (16) is formed in the top end of the main nozzle component (15), an idle speed measuring hole (17) is formed in the body (11), a throttle valve (18) is arranged in the body (11), and a negative pressure rubber pipe (19) is sleeved on the surface of the negative pressure pipe (12).
3. The high temperature resistant self-circulating apparatus of claim 1, wherein: the inside of pump cover diaphragm (23) is provided with pump cover diaphragm oil feed check valve (2301) and pump cover diaphragm oil outlet check valve (2302), pump cover inlet port (2402) have been seted up to the inside of pump cover (24), pump cover fuel cavity (2403) have been seted up to the inside of pump cover (24).
4. The high temperature resistant self-circulating apparatus of claim 1, wherein: the inside of pump cover (24) has seted up pump cover and has deposited oil pocket (2404), the lower surface of pump cover (24) is provided with measuring chamber gasket (25), the lower surface of measuring chamber gasket (25) is provided with needle valve (212) diaphragm part (26), the lower surface of needle valve (212) diaphragm part (26) is provided with measuring chamber connecting cover (27).
5. The high temperature resistant self-circulating apparatus of claim 4, wherein: the inside of measuring room connecting cover (27) has seted up measuring room chamber (2701), measuring room connecting cover's (27) surface has cup jointed measuring room cover clamp plate (28), oil feed return bend (210) are worn to be equipped with in the inside of lower body (21).
6. The high temperature resistant self-circulating apparatus of claim 1, wherein: the inside of lower body (21) is provided with needle valve (212), the inside of lower body (21) is provided with needle valve spring (213), the inside of lower body (21) is provided with needle valve rocking arm (214), the inside of lower body (21) is provided with pump membrane return tower spring (215).
7. The high temperature resistant self-circulating apparatus of claim 1, wherein: the inside of lower cover (35) is worn to be equipped with oil drain screw (36), oil drain pipe (37) are worn to be equipped with in the inside of lower cover (35), oil outlet pipe (38) are worn to be equipped with in the inside of lower cover (35), negative pressure branch pipe (39) other end wears to establish in the inside of negative pressure rubber tube (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110516827.8A CN113074066B (en) | 2021-05-12 | 2021-05-12 | High temperature resistant self-circulation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110516827.8A CN113074066B (en) | 2021-05-12 | 2021-05-12 | High temperature resistant self-circulation device |
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| Publication Number | Publication Date |
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| CN113074066A CN113074066A (en) | 2021-07-06 |
| CN113074066B true CN113074066B (en) | 2024-09-24 |
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| CN202110516827.8A Active CN113074066B (en) | 2021-05-12 | 2021-05-12 | High temperature resistant self-circulation device |
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| CN202300711U (en) * | 2011-11-01 | 2012-07-04 | 重庆卡马机电有限责任公司 | Carburetor float chamber oil discharging structure |
| CN111550329A (en) * | 2020-06-23 | 2020-08-18 | 福建省大立通用机电制造有限公司 | Novel leak protection oil regulation device |
| CN214533289U (en) * | 2021-05-12 | 2021-10-29 | 福建省大立通用机电制造有限公司 | High-temperature-resistant self-circulation device |
Family Cites Families (3)
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| JP3952229B2 (en) * | 1997-11-07 | 2007-08-01 | 日本ウォルブロー株式会社 | Membrane vaporizer |
| JP6211455B2 (en) * | 2014-04-14 | 2017-10-11 | 株式会社マキタ | Heating device for carburetor |
| CN112761824A (en) * | 2021-01-29 | 2021-05-07 | 江门华联工业有限公司 | Carburetor |
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2021
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| JPH09177614A (en) * | 1995-12-21 | 1997-07-11 | Nippon Walbro:Kk | Membrane carburetor for 4-stroke engine for mobile work machines |
| US6382599B1 (en) * | 1999-09-24 | 2002-05-07 | Walbro Japan, Inc. | Carburetor with accelerator |
| CN202300711U (en) * | 2011-11-01 | 2012-07-04 | 重庆卡马机电有限责任公司 | Carburetor float chamber oil discharging structure |
| CN111550329A (en) * | 2020-06-23 | 2020-08-18 | 福建省大立通用机电制造有限公司 | Novel leak protection oil regulation device |
| CN214533289U (en) * | 2021-05-12 | 2021-10-29 | 福建省大立通用机电制造有限公司 | High-temperature-resistant self-circulation device |
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