CN210858989U - Air filter of diesel engine - Google Patents
Air filter of diesel engine Download PDFInfo
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- CN210858989U CN210858989U CN201921441015.6U CN201921441015U CN210858989U CN 210858989 U CN210858989 U CN 210858989U CN 201921441015 U CN201921441015 U CN 201921441015U CN 210858989 U CN210858989 U CN 210858989U
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Abstract
The utility model relates to a diesel engine air filter, which comprises a primary filter and an oil bath type air filter, wherein the primary filter comprises a dust cup with a dust-gas separation cavity and a dust exhaust port, a rotational flow component forming the rotational flow direction of air is arranged above the inner part of the dust cup, a rain-proof cap is arranged on the dust cup, the cup port is provided with an air inlet cavity, the bottom of the air inlet cavity is connected with an air outlet pipe of the primary filter, and coarse filter sponge is filled in the air inlet cavity; the outer edge of the rain hat is provided with a shielding part extending downwards; the lower end of the gas outlet pipe of the prefilter extends to the oil bath room; the primary filter air outlet pipe is also provided with a shell, the upper end of the shell is sleeved on the primary filter air outlet pipe and is connected with the bottom of the dust collecting cup, the lower end of the shell is connected with the upper end of the oil bath chamber, and the shell is provided with a filter air outlet. The utility model discloses simple structure sets up the prefilter on original empty filter basis, alleviates empty filter load intensity, improves the work efficiency and the increase of service life of empty filter, and rain-proof cap and oil bath room can be dismantled, conveniently change colating sponge, filtration sponge and machine oil.
Description
Technical Field
The utility model belongs to the technical field of air cleaner, concretely relates to air cleaner for middle-size and small-size general internal combustion diesel engine.
Background
When piston machines (internal combustion engines, reciprocating compressors, etc.) work, if the sucked air contains impurities such as dust, the abrasion of parts is intensified, so the air filter is required to be installed. The air filter is used for filtering an air inlet system of the engine and an air circulating system of a carriage respectively. The filter core is directly used to filter by a part of existing air filters, and the filter core is used as a consumable and needs to be replaced regularly, so that the filtering cost is increased, and the filter quality of the filter is deteriorated even if the filter core is forgotten to be replaced, thereby affecting the performance of an engine. There is also a portion of the prefilter which is not convenient for replacing the coarse filter sponge and for removing dust which accumulates in the dirt cup.
SUMMERY OF THE UTILITY MODEL
In order to the problem, the utility model provides a diesel engine air cleaner adds the prefilter on former air cleaner's basis, carries out the primary filtration to the air that gets into to alleviate air cleaner's filtration load intensity, and then improve the work efficiency and the increase of service life of air cleaner assembly, and conveniently change the filtration sponge in the filter.
In order to realize the above function, the utility model adopts the following technical scheme: the air filter of the diesel engine comprises a primary filter and an oil bath type air filter, wherein the primary filter comprises a dust cup with a dust-air separation cavity and an air inlet cavity arranged at the cup opening of the dust cup; the inside top of dust cup is equipped with the whirl subassembly, the whirl subassembly includes the columniform base segment at middle part to and the several is located the whirl blade that base segment periphery slope set up, dust cup inner wall bottom have with the unanimous dust exhaust mouth of whirl blade whirl direction, its characterized in that: the bottom of the dust collecting cup is provided with a primary filter air outlet pipe, and the upper end of the primary filter air outlet pipe extends into the dust collecting cup for a preset distance; the cup mouth of the dust collecting cup is provided with a lower connecting part which extends horizontally outwards, and the lower connecting part is provided with an air inlet; a rain-proof cap is arranged above the dust collecting cup and is arranged outside the air inlet; an air inlet cavity is formed among the air inlet, the rain hat and the base body part, and coarse filter sponge for filtering coarse dust is filled in the air inlet cavity; the outer edge of the rain hat is provided with an upper connecting part which extends horizontally outwards, and the upper connecting part and the lower connecting part are provided with mounting holes with corresponding positions and are detachably connected through a connecting piece; the outer edge of the upper connecting part is also provided with a shielding part extending downwards; the lower end of the gas outlet pipe of the prefilter extends to the oil bath chamber; the primary filter is characterized in that a shell is further arranged outside the primary filter air outlet pipe, the upper end of the shell is sleeved on the primary filter air outlet pipe and is connected with the bottom of the dust collecting cup, the lower end of the shell is tightly connected with the upper end of the oil bath chamber, and a filter air outlet is formed in the shell.
Furthermore, an oil storage cup is fixedly arranged at the bottom of the oil bath chamber, and a plurality of backflow ports are formed in the side wall of the oil storage cup.
Furthermore, the oil bath type air filter also comprises a separation part for separating the oil bath room from the shell, the separation part is provided with a hollow vent pipe, and the vent pipe is sleeved at the tail end of the air outlet pipe of the primary filter; the partition part further comprises a partition plate which is integrally formed with the vent pipe and extends horizontally outwards, and a plurality of oil bath air outlets are formed in the partition plate.
Furthermore, the partition part also comprises a skirt-shaped oil baffle plate which is arranged at the bottom of the breather pipe and prevents oil from splashing outside.
Furthermore, the bottom of the dust cup is welded and fixed with the upper edge of the shell.
Furthermore, air filtering sponge is filled between the partition board and the lower part of the air outlet of the filter in the shell.
Further, the rough filtering sponge and the air filtering sponge are both soft polyurethane foam.
Furthermore, the outer edge of the clapboard extends to the joint of the shell and the oil bath chamber and is sealed by a sealing ring, and a plurality of snap fasteners for fixedly connecting the oil bath chamber and the shell are arranged on the outer surfaces of the oil bath chamber and the shell.
To sum up, the utility model discloses increased the prefilter on original air cleaner, its simple structure, it is small, the installation and use of being convenient for, the beneficial effects of the utility model:
when the internal combustion engine works, negative pressure is formed in the primary filter and the air filter, external air is sucked into the air inlet cavity through the shielding part extending downwards from the rain-proof cap, then guided by the cyclone blades and rotates at a high speed to enter the dust collecting cup, gas-solid (gas-liquid) centrifugal separation is carried out on the air containing dust (liquid) under the action of centrifugal force, and the dust (liquid) spirally moves downwards along the wall of the dust collecting cup and is automatically discharged out of the primary filter through the dust discharge port; after the primarily filtered clean air moves downwards to the bottom of the dust collecting cup, the primarily filtered air moves reversely and enters the air filter through the air outlet channel under the double actions of the bottom structure of the dust collecting cup and the central negative pressure of the separation cavity of the dust collecting cup, so that the primary filtering effect is achieved. The utility model discloses be convenient for change the colating sponge in the prefilter and the filtration sponge in the casing, improve the filtration quality, alleviate air cleaner's filtration load intensity, and then improve air cleaner's work efficiency and increase of service life to reduce the maintenance change number of times of equal operation to air cleaner.
Drawings
Fig. 1 is a schematic three-dimensional sectional structure of an air cleaner for a diesel engine.
FIG. 2 is another cross-sectional view of an air cleaner for a diesel engine.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
1-2, comprising a primary filter and an oil bath air filter, said primary filter comprising a dust cup 5 having a dust-air separation chamber 52, an air inlet chamber 15 provided at the cup mouth of said dust cup 5; the cyclone assembly 2 is arranged above the inner part of the dust collecting cup 5, the cyclone assembly 2 comprises a cylindrical base part 22 at the middle part and a plurality of cyclone blades 21 which are obliquely arranged on the periphery of the base part 22, and the bottom of the inner wall of the dust collecting cup 5 is provided with a dust exhaust port 4 which is consistent with the cyclone direction of the cyclone blades 21, and the dust exhaust device is characterized in that: a primary filter air outlet pipe 6 is arranged at the bottom of the dust collecting cup 5, and the upper end of the primary filter air outlet pipe 6 extends into the dust collecting cup 5 for a preset distance; the cup mouth of the dust collecting cup 5 is provided with a lower connecting part 51 which extends outwards horizontally, and the lower connecting part 51 is provided with an air inlet 1; a rain-proof cap 3 is arranged above the dust collecting cup 5, and the rain-proof cap 3 is covered outside the air inlet 1; an air inlet cavity 15 is formed among the air inlet 1, the rain hat 3 and the base body part 22, and coarse filter sponge 13 for filtering coarse dust is filled in the air inlet cavity 15; the outer edge of the rain hat 3 is provided with an upper connecting part 31 extending horizontally outwards, the upper connecting part 31 and the lower connecting part 51 are provided with mounting holes 32 corresponding in position, and the upper connecting part 31 and the lower connecting part are detachably connected through a connecting piece; the outer edge of the upper connecting part 31 is also provided with a shielding part 33 extending downwards; the lower end of the gas outlet pipe 6 of the prefilter extends to the oil bath chamber 10; the primary filter air outlet pipe 6 is also externally provided with a shell 14, the upper end of the shell 14 is sleeved on the primary filter air outlet pipe 6 and is connected with the bottom of the dust collecting cup 5, the lower end of the shell is closely connected with the upper end of the oil bath chamber 10, and the shell 14 is provided with a filter air outlet 16.
Further, an oil storage cup 9 is fixedly arranged at the bottom of the oil bath chamber 10, and a plurality of return ports 91 are formed in the side wall of the oil storage cup 9.
Further, the oil bath type air filter also comprises a partition part 7 for separating the oil bath chamber 10 from the shell 14, the partition part 7 is provided with a hollow vent pipe 71, and the vent pipe 71 is sleeved at the tail end of the primary filter air outlet pipe 6; the partition part 7 further comprises a partition plate 72 which is integrally formed with the vent pipe 71 and extends horizontally outwards, and a plurality of oil bath air outlets 73 are formed in the partition plate 72.
Further, the partition 7 further includes a skirt-shaped oil baffle 74 disposed at the bottom of the vent pipe 71 to prevent oil from splashing.
Furthermore, the bottom of the dust cup 5 is welded and fixed with the upper edge of the shell 14.
Further, the partition 72 is filled with an air filter sponge 75 from the inside of the housing 14 to below the filter air outlet 16.
Further, the rough filtration sponge 13 and the air filtration sponge 75 are both made of flexible polyurethane foam. The soft polyurethane foam is soft and fine, has good oil absorption, good filtering effect and low price, and reduces the use cost of the air filter.
Furthermore, the outer edge of the partition plate 72 extends to the joint of the housing 14 and the oil bath chamber 10 and is sealed by the sealing ring 12, and a plurality of snap fasteners for fixedly connecting the housing 14 and the oil bath chamber 10 are arranged on the outer surface of the housing 14.
When the air filter of the diesel engine is used, air enters the air inlet cavity 15 from the air inlet 1 on the upper edge of the dust collecting cup 5, the coarse filter sponge 13 filled in the air inlet cavity filters out large dust, then the air enters the dust collecting cup 5 through the cyclone component 2, the air forms a rotary flow direction under the guiding action of the cyclone blades 21 and the base body part 22, and in the process of moving in the dust collecting cup 5, through the centrifugal action, the air and solid and liquid impurity separation is formed, and the effect of primarily removing impurities is achieved. The impurities are discharged from the dust discharge port 4 which is opened in the same direction under the action of the air rotating flow direction. In order to prevent impurities from being directly brought into the primary filter air outlet pipe 6 by air moving at a high speed, the upper end of the primary filter air outlet pipe 6 exceeds the bottom of the dust collecting cup 5 by a preset distance, the air rotates in an annular space on the inner wall of the dust collecting cup 5 and outside the primary filter air outlet pipe 6, and good air flowability is ensured while the impurities are not brought into the primary filter air outlet pipe 6.
Cleaner air enters the oil bath room 10 from the primary filter air outlet pipe 6 after the dust is primarily separated, air with a certain flow rate rushes to the engine oil in the oil storage cup 9 and enables the engine oil to splash to form oil mist, the dust with heavy quality is captured by the engine oil mist due to the difference of the quality of the air and the dust, and a plurality of backflow ports 91 are formed in the cup wall of the oil storage cup 9 and used for the engine oil to flow back to the oil storage cup 9 after being rushed out. After the air is secondarily filtered in the oil bath chamber, the air enters the air filtering sponge 75 from the oil bath air outlet 73 on the partition plate 72, and the air flowing through the air filtering sponge 75 is filtered again and enters the diesel engine through the filter air outlet 16.
The utility model discloses a rain-proof cap 3 is connected with dust cup 5 through bolt and nut, can dismantle, conveniently changes the colating sponge 13 of the colating dust in the chamber 15 that admits air. The housing 14 is connected with the oil bath chamber 10 through a snap fastener, so that the engine oil in the oil bath chamber 10 and the air filtering sponge 75 in the housing 14 can be conveniently detached and replaced. The shielding part 33 extending downwards is arranged at the outer edge of the rain hat 3, so that rainwater is effectively prevented from splashing, and scraps of paper, leaves and the like can be prevented from entering the air inlet cavity.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (9)
1. The diesel engine air filter comprises a primary filter and an oil bath type air filter, wherein the primary filter comprises a dust cup (5) with a dust-gas separation cavity (52), and an air inlet cavity (15) arranged at the cup opening of the dust cup (5); the dust collecting cup is characterized in that a cyclone component (2) is arranged above the inner part of the dust collecting cup (5), the cyclone component (2) comprises a cylindrical base body part (22) in the middle and a plurality of cyclone blades (21) which are arranged on the periphery of the base body part (22) in an inclined mode, and a dust exhaust port (4) which is consistent with the cyclone direction of the cyclone blades (21) is formed in the bottom of the inner wall of the dust collecting cup (5), and the dust collecting cup is characterized in that: a primary filter air outlet pipe (6) is arranged at the bottom of the dust collecting cup (5), and the upper end of the primary filter air outlet pipe (6) extends into the dust collecting cup (5) for a preset distance; the cup mouth of the dust collecting cup (5) is provided with a lower connecting part (51) which extends outwards horizontally, and the lower connecting part (51) is provided with an air inlet (1); a rain-proof cap (3) is arranged above the dust collecting cup (5), and the rain-proof cap (3) is covered outside the air inlet (1); an air inlet cavity (15) is formed among the air inlet (1), the rain hat (3) and the base body part (22), and coarse filter sponge (13) for filtering coarse dust is filled in the air inlet cavity (15); an upper connecting part (31) extending outwards horizontally is arranged on the outer edge of the rain hat (3), and the upper connecting part (31) and the lower connecting part (51) are provided with mounting holes (32) corresponding in position and detachably connected through connecting pieces; the outer edge of the upper connecting part (31) is also provided with a shielding part (33) extending downwards; the lower end of the primary filter air outlet pipe (6) extends to the oil bath chamber (10); the primary filter air outlet pipe (6) is also externally provided with a shell (14), the upper end of the shell (14) is sleeved on the primary filter air outlet pipe (6) and is connected with the bottom of the dust collecting cup (5), the lower end of the shell is closely connected with the upper end of the oil bath chamber (10), and the shell (14) is provided with a filter air outlet (16).
2. A diesel air cleaner in accordance with claim 1 wherein: the oil bath chamber (10) is fixedly provided with an oil storage cup (9) at the bottom, and a plurality of backflow ports (91) are arranged on the side wall of the oil storage cup (9).
3. A diesel air cleaner in accordance with claim 1 wherein: the oil bath type air filter also comprises a partition part (7) for separating the oil bath chamber (10) from the shell (14), the partition part (7) is provided with a hollow vent pipe (71), and the vent pipe (71) is sleeved at the tail end of the primary filter air outlet pipe (6); the partition part (7) further comprises a partition plate (72) which is integrally formed with the vent pipe (71) and extends horizontally outwards, and a plurality of oil bath air outlets (73) are formed in the partition plate (72).
4. A diesel air cleaner in accordance with claim 3 wherein: the partition part (7) further comprises a skirt edge type oil baffle plate (74) which is arranged at the bottom of the vent pipe (71) and used for preventing oil from splashing outwards.
5. A diesel air cleaner in accordance with claim 1 wherein: the bottom of the dust collecting cup (5) is welded and fixed with the upper edge of the shell (14).
6. A diesel air cleaner in accordance with claim 3 wherein: and an air filtering sponge (75) is filled from the partition plate (72) to the lower part of the air outlet (16) of the filter in the shell (14).
7. A diesel air cleaner in accordance with claim 1 wherein: the rough filtering sponge (13) is soft polyurethane foam.
8. A diesel air cleaner in accordance with claim 3 wherein: the outer edge of the partition plate (72) extends to the joint of the shell (14) and the oil bath chamber (10) and is sealed by a sealing ring (12), and a plurality of snap fasteners for fixedly connecting the oil bath chamber (10) and the shell (14) are arranged on the outer surfaces of the oil bath chamber (10) and the shell.
9. A diesel air cleaner in accordance with claim 6 wherein: the air filtering sponge (75) is soft polyurethane foam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441015.6U CN210858989U (en) | 2019-08-30 | 2019-08-30 | Air filter of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441015.6U CN210858989U (en) | 2019-08-30 | 2019-08-30 | Air filter of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858989U true CN210858989U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921441015.6U Active CN210858989U (en) | 2019-08-30 | 2019-08-30 | Air filter of diesel engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN210858989U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047988A (en) * | 2021-03-30 | 2021-06-29 | 重庆莱耀动力机械制造有限公司 | Oil bath type oil-gas separation air filter |
| CN113236452A (en) * | 2021-06-08 | 2021-08-10 | 中车（天津）轨道交通设备有限公司 | Filter screen with flow equalizing function |
-
2019
- 2019-08-30 CN CN201921441015.6U patent/CN210858989U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047988A (en) * | 2021-03-30 | 2021-06-29 | 重庆莱耀动力机械制造有限公司 | Oil bath type oil-gas separation air filter |
| CN113047988B (en) * | 2021-03-30 | 2022-06-10 | 重庆莱耀动力机械制造有限公司 | Oil bath type oil-gas separation air filter |
| CN113236452A (en) * | 2021-06-08 | 2021-08-10 | 中车（天津）轨道交通设备有限公司 | Filter screen with flow equalizing function |
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