CN113482888B - Air compressor machine filter equipment that admits air - Google Patents
Air compressor machine filter equipment that admits air Download PDFInfo
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- CN113482888B CN113482888B CN202110916592.1A CN202110916592A CN113482888B CN 113482888 B CN113482888 B CN 113482888B CN 202110916592 A CN202110916592 A CN 202110916592A CN 113482888 B CN113482888 B CN 113482888B
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- air
- filter
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- box
- inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to the technical field of air compressors and discloses an air intake filtering device of an air compressor, which comprises a filter box, wherein an air inlet and an air extraction opening are formed in the top of the filter box, an air outlet is formed in the bottom of the filter box, a first filter screen, a first silencing plate, a filter cartridge and a second silencing plate are sequentially arranged in the filter box from top to bottom, a vibrator is arranged on the first filter screen, the central axis of the filter cartridge is perpendicular to the side wall of the filter box, and two ends of the filter cartridge are respectively rotatably arranged on the side wall of the filter box; the first filter screen, the first silencing plate and the second silencing plate are fixedly connected with the side wall of the filter box; one end of the air inlet pipeline is connected with the air outlet, and the other end of the air inlet pipeline is connected with the air compressor; the air extracting device is arranged at the outer side of the filter box and connected with the air extracting opening; and the driving motor is in transmission connection with the filter cartridge. The invention can lead the impurity particles attached to the first filter screen and the filter cartridge to fall off, is convenient for thoroughly cleaning the first filter screen and the filter cartridge, and improves the cleaning effect.
Description
Technical Field
The invention relates to the technical field of air compressors, in particular to an air intake filtering device of an air compressor.
Background
The air compressor is an air compressor for short, and is a device for compressing air. The air source of the air compressor is generally natural air, and the natural air generally contains various impurities such as dust particles, and the impurities such as the dust particles enter the air compressor, so that the operation of the air compressor is seriously influenced, the service life of the air compressor is shortened, and therefore, an air filtering device is generally arranged at the air inlet of the air compressor, so that the air entering the air compressor is clean. At present, an air inlet filter device of an air compressor generally consists of a shell and a filter element, and air is filtered by the filter element, however, when a large amount of dust particles are gathered on the filter element, the filtering effect of the filter element is affected, and therefore, the filter element needs to be cleaned or replaced. At present, an air compressor inlet air filtering device generally adopts a reverse purging mode to clean a filter element, but when the filter element is reversely purged, dust in a filter element gap can only be blown off, dust attached to the surface of the filter element is difficult to clean, so that the filter element is not thoroughly cleaned, and the filtering effect of the filter element is affected.
Disclosure of Invention
In view of the above problems, the invention aims to provide an air compressor inlet filter device so as to solve the problem that a filter element of the existing air compressor inlet filter device is not thoroughly cleaned.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention relates to an air compressor inlet filter device, which comprises:
the filter box is characterized in that an air inlet and an air extraction opening are formed in the top of the filter box, an air outlet is formed in the bottom of the filter box, a first filter screen, a first silencing plate, a filter cartridge and a second silencing plate are sequentially arranged in the filter box from top to bottom, a vibrator is arranged on the first filter screen, the central axis of the filter cartridge is perpendicular to the side wall of the filter box, and two ends of the filter cartridge are respectively rotatably installed on the side wall of the filter box; the first filter screen, the first silencing plate and the second silencing plate are fixedly connected with the side wall of the filter box;
one end of the air inlet pipeline is connected with the air outlet, and the other end of the air inlet pipeline is connected with the air compressor;
the air extracting device is arranged at the outer side of the filter box and is connected with the air extracting opening;
and the driving motor is in transmission connection with the filter cartridge.
Preferably, the air compressor inlet air filtering device further comprises an air storage tank, wherein the air inlet pipeline is connected with the air storage tank, and the air storage tank is connected with the air compressor.
Preferably, the gas storage tank is provided with a gas inlet and a gas outlet, the gas inlet is arranged at the lower part of the gas storage tank, and the gas outlet is arranged at the upper part of the gas storage tank.
Preferably, an air flow meter is arranged on the air inlet pipeline, and the air flow meter is positioned between the air outlet and the air storage box.
Preferably, the air compressor inlet air filtering device further comprises a controller, and the air flow meter, the driving motor, the vibrator and the air exhaust device are all electrically connected with the controller.
Preferably, the air extractor comprises a silencing cover, an air extractor and an air extraction pipeline, wherein the air extraction pipeline is connected with the air extraction opening, the air extractor is installed on the air extraction pipeline, the silencing cover is arranged on the periphery of the air extractor, and a through hole for the air extraction pipeline to pass through is formed in the silencing cover.
Preferably, a second filter screen is arranged below the second silencing plate, and the second filter screen is fixedly connected with the side wall of the filter box.
Preferably, two ends of the filter cartridge are respectively provided with a rotating shaft, the rotating shafts are rotatably arranged on the side wall of the filter box, and one rotating shaft is connected with the driving motor.
Preferably, the upper surfaces of the first and second muffler plates are each provided with a plurality of grooves.
Compared with the prior art, the air compressor inlet air filtering device has the beneficial effects that:
according to the air compressor inlet filter device provided by the embodiment of the invention, the inlet air is filtered step by step through the first filter screen and the filter cartridge in the filter box, so that the air entering the air compressor through the inlet pipeline is clean. Utilize the first filter screen of vibrator vibration for the impurity particle that adheres to on first filter screen drops, rotates through the drive cartridge filter, makes the gaseous impurity particle that adheres to on the cartridge filter drop, and through air exhaust device suction gas, the gaseous impurity particle that will drop discharges outside the rose box, thereby realizes thoroughly cleaning first filter screen and cartridge filter, improves cleaning performance, can avoid frequently changing first filter screen or cartridge filter. In addition, the first silencer plate and the second silencer plate are arranged in the filter box, so that noise reduction treatment is carried out on the air inlet, and noise pollution is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an air intake filtering device of an air compressor according to an embodiment of the present invention;
in the figure, 1, a filter box; 101. an air inlet; 102. an air outlet; 103. an extraction opening; 11. a first filter screen; 12. a first muffler plate; 13. a filter cartridge; 131. a rotating shaft; 14. a second muffler plate; 15. a vibrator; 2. an air intake duct; 3. an air extractor; 4. an air extraction pipeline; 5. a gas storage tank; 6. an air flow meter; 7. an air compressor; 8. and a control valve.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
As shown in fig. 1, an air intake filter device of an air compressor of the embodiment of the invention comprises a filter box 1, an air intake pipeline 2, an air extraction device and a driving device, wherein the filter box 1 is used for purifying air, the air intake pipeline 2 is connected between the filter box 1 and the air compressor 7 and is used for conveying purified air to the air compressor 7, and the air extraction device is connected with the filter box 1 and is used for extracting air and flushing a filter screen in the filter box 1. The top of the filter box 1 is provided with an air inlet 101 for entering air and an air extraction opening 103 for exhausting dust-containing air, the bottom of the filter box 1 is provided with an air outlet 102 for exhausting purified air, a first filter screen 11, a first silencer plate 12, a filter cartridge 13 and a second silencer plate 14 are sequentially arranged in the filter box 1 from top to bottom, and the first filter screen 11 is fixedly connected with the side wall of the filter box 1 and is used for carrying out primary filtration on the entering air; the vibrator 15 is arranged on the first filter screen 11, the vibrator 15 is connected with a power supply, and when the vibrator 15 vibrates, the first filter screen 11 vibrates along with the vibrator, so that impurities such as dust particles attached to the first filter screen 11 can be vibrated down, dust impurities are suspended in the filter box 1, and the dust impurities are conveniently extracted out of the filter box 1 by the air extractor, so that the first filter screen 11 is thoroughly cleaned; the first silencing plate 12 is fixedly connected with the side wall of the filter box 1 and is used for carrying out primary noise reduction treatment on air flow noise; the filter cartridge 13 is used for performing secondary filtration on the entering air, the central axis of the filter cartridge 13 is perpendicular to the side wall of the filter box 1, two ends of the filter cartridge 13 are respectively rotatably arranged on the side wall of the filter box 1, when the filter cartridge 13 rotates relative to the side wall of the filter box 1, impurity particles attached to the filter cartridge 13 can fall off from the surface of the filter cartridge 13, so that the filter cartridge 13 is conveniently and thoroughly cleaned by the air extractor out of the filter box 1; the second silencing plate 14 is located above the air outlet 102, the second silencing plate 14 is fixedly connected with the side wall of the filter box 1, and is used for performing secondary noise reduction treatment on air flow noise, and air passing through the second silencing plate 14 enters the air inlet pipeline 2 from the air outlet 102 and enters the air compressor 7 through the air inlet pipeline 2; one end of the air inlet pipeline 2 is connected with the air outlet 102, and the other end of the air inlet pipeline 2 is connected with the air compressor 7; the air extracting device is arranged on the outer side of the filter box 1 and is connected with the air extracting opening 103; the driving motor is in transmission connection with the filter cartridge 13 to drive the filter cartridge 13 to rotate. By performing secondary filtration on the air entering the filter box 1, the air entering the air compressor 7 through the air outlet 102 is clean and free of dust particles and other impurities. The air extraction device is used for carrying out air extraction and flushing treatment on the first filter screen 11 and the filter cartridge 13 in the filter box 1, so that dust particles cannot adhere to the surfaces of the first filter screen 11 and the filter cartridge 13, the first filter screen 11 and the filter cartridge 13 cannot be blocked, the filtering effect is improved, and frequent replacement of the first filter screen 11 and the filter cartridge 13 can be avoided.
It should be noted that, the filter box 1 is square and includes a top plate, a bottom plate and a side wall, the air inlet 101 and the air extraction opening 103 may be both located on the top plate of the filter box 1, or the air inlet 101 is located on the top plate of the filter box 1, and the air extraction opening 103 is located on the side wall of the filter box 1; the air outlet 102 may be located on a side wall of the filter box 1 or may be located on a bottom plate of the filter box 1. The length direction of the filter cartridge 13 is the same as the length direction of the filter box 1.
In this embodiment, the first filter screen 11 is a coarse filter screen, and filters dust particles; the filter cartridge 13 is made of a fine filter screen, and filters fine particles. The central axis of the cylindrical filter cartridge 13 is perpendicular to the side wall of the filter box 1, and the length of the filter cartridge 13 in the axial direction is slightly smaller than the length of the filter box 1, so that the cartridge top and the cartridge bottom of the filter cartridge 13 are close to the side wall of the filter box 1, and the amount of gas passing through a gap between the cartridge top or the cartridge bottom and the side wall is reduced; the diameter of the filter cartridge 13 is slightly smaller than the width of the filter box 1 so that the wall of the filter cartridge 13 is close to the side wall of the filter box 1, reducing the amount of gas passing through the gap between the wall and the side wall. In other embodiments, the top and bottom of the filter cartridge 13 may be made of sheet material, and the side walls of the filter cartridge 13 may be made of fine filter mesh.
In this embodiment, two ends of the filter cartridge 13 are respectively provided with a rotation shaft 131, the two ends refer to a cartridge top and a cartridge bottom of the filter cartridge 13 respectively, the two rotation shafts 131 are coaxially arranged, the rotation shafts 131 are rotatably installed on the side wall of the filter box 1, one of the rotation shafts 131 is connected with the driving motor, the rotation shafts 131 are driven to rotate by the driving motor, and the rotation shafts 131 are utilized to drive the filter cartridge 13 to rotate. For example, the shaft 131 may be connected to the motor shaft of the driving motor by a chain transmission, or may be connected by a gear engagement transmission.
In other embodiments, two ends of the filter cartridge 13 are mounted on the same rotary shaft 131, the rotary shaft 131 is coaxially disposed with the central axis of the filter cartridge 13, one end of the rotary shaft 131 passes through the top of the filter cartridge 13 to be connected with one side wall of the filter box 1, and the other end of the rotary shaft 131 passes through the bottom of the filter cartridge 13 to be connected with the other side wall of the filter box 1. Further, a plurality of spiral blades are disposed on the rotating shaft 131, and the plurality of spiral blades are distributed along the length direction of the rotating shaft 131. It should be noted that, the length direction of the rotating shaft 131 is the length direction of the filter box 1. When the rotating shaft 131 rotates, the spiral blades are driven to rotate along with the rotating shaft, so that the air entering the filter cartridge 13 generates centrifugal force, and impurity particles in the air can be attached to the wall of the filter cartridge 13 at the periphery under the action of the centrifugal force, so that the filtering effect is further improved.
In this embodiment, a second filter screen is further disposed below the second muffler plate 14, and the second filter screen is fixedly connected with the side wall of the filter box 1, where the second filter screen can further filter the air passing through the filter cartridge 13 on one hand, and can filter the air passing through the gap between the top or bottom of the cylinder and the side wall on the other hand. The second filter screen is located above the air outlet 102, and clean air obtained by filtering the second filter screen flows out from the air outlet 102. In this embodiment, the second filter screen is made of a fine filter screen, and can filter fine particles. Further, the second filter screen can be provided with the vibrator 15, and the vibrator 15 is connected with the power supply, and the vibrator 15 can drive the second filter screen vibration for tiny particle impurity attached on the second filter screen drops, and the air extraction device of being convenient for is extracted and is washed the second filter screen.
In this embodiment, the upper surfaces of the first muffler plate 12 and the second muffler plate 14 are provided with a plurality of grooves, and the plurality of grooves are uniformly distributed on the first muffler plate 12 or the second muffler plate 14. The grooves can form diffuse reflection by air flow noise, so that the noise reduction effect on the noise is enhanced. In this embodiment, the first muffler plate 12 and the second muffler plate 14 are made of sound absorbing materials, and do not affect the airflow.
In this embodiment, the air extractor includes amortization cover, air exhauster 3 and air exhaust pipeline 4, air exhaust pipeline 4 with extraction opening 103 is connected, air exhauster 3 is installed on air exhaust pipeline 4, amortization cover sets up the periphery of air exhauster 3, be provided with on the amortization cover and supply air exhaust pipeline 4 passes the through-hole. The air mixed with impurities such as dust particles is pumped out of the filter box 1 through the air extractor 3, and the running sound of the air extractor 3 is reduced through the silencing cover, so that noise pollution is reduced. The noise-reducing cover is made of sound-absorbing material. Further, the air exhaust pipeline 4 is connected with the dust box so as to intensively recycle discharged dust and avoid dust pollution to the environment.
In this embodiment, the air intake filtering device of the air compressor further includes an air storage tank 5, configured to provide an air storage space, so as to avoid interruption of air flow entering the air compressor 7; the air inlet pipeline 2 is connected with the air storage tank 5, and the air storage tank 5 is connected with the air compressor 7. The air tank 5 is also connected to the air compressor 7 by the air intake pipe 2. Control valves 8 are arranged on the air inlet pipeline 2 between the filter tank 1 and the air storage tank 5 and the air inlet pipeline 2 between the air storage tank 5 and the air compressor 7 to control the on-off of air flow.
Further, the gas storage tank 5 is provided with a gas inlet and a gas outlet, the gas inlet is arranged at the lower part of the gas storage tank 5, and the gas outlet is arranged at the upper part of the gas storage tank 5. The air storage tank 5 adopts a gas flow mode of lower inlet and upper outlet, so that dust accumulated in the filter tank 1 can be prevented from entering the air compressor 7 through the air storage tank 5.
In this embodiment, the air flow meter 6 is disposed on the air inlet pipe 2, and the air flow meter 6 is located between the air outlet 102 and the air storage tank 5, and the air flow meter 6 can be used to measure the amount of air entering the air storage tank 5. When one or more of the first filter screen 11, the filter cartridge 13 and the second filter screen in the filter box 1 are more adhered impurity particles to cause blockage, accordingly, the airflow channel is reduced, the airflow speed is reduced, and the gas flow rate in unit time is reduced, so that the gas flow rate in unit time can be obtained by the gas quantity measured by the air flowmeter 6, whether the first filter screen 11, the filter cartridge 13 or the second filter screen is seriously blocked is obtained, the filter box 1 is conveniently cleaned in time by using the air extraction device, the cleaning is avoided too frequently, and the blockage caused by untimely cleaning is avoided.
Further, the air compressor inlet filter device further comprises a controller, and the air flowmeter 6, the driving motor, the vibrator 15 and the air exhaust device are all electrically connected with the controller. The controller may receive the measurement result of the air flow meter 6 and determine whether to activate the vibrator 15, the driving motor, and the air extracting device according to the measurement result of the air flow meter 6. According to the air flow meter 6, the air flow rate in unit time can be obtained by measuring the air flow rate entering the air storage tank 5, and when the air flow rate in unit time is lower than a preset threshold value, the air flow rate indicates that one or more of the first filter screen 11, the filter cartridge 13 and the second filter screen are blocked, and an air extraction device is required to carry out air extraction cleaning treatment. The controller controls the driving motor, the vibrator 15 and the air extractor to start, the driving motor drives the filter cartridge 13 to rotate, and impurity particles attached to the filter cartridge 13 fall off while rotating; the vibrator 15 drives the first filter screen 11 and the second filter screen to vibrate, and impurity particles attached to the first filter screen 11 and the second filter screen fall off while vibrating; the air extractor 3 is started to extract impurity particles floating in the filter box 1 out of the filter box 1, so that the first filter screen 11, the filter cartridge 13 and the second filter screen are cleaned.
The working process of the invention is as follows:
after air enters the filter box 1 through the air inlet 101, the air is subjected to primary filtration through the first filter screen 11, noise generated by the air is subjected to primary noise reduction through the first silencer plate 12, the air is subjected to secondary filtration through the filter cylinder 13, noise generated by the air is subjected to secondary noise reduction through the second silencer plate 14, the air is subjected to tertiary filtration through the second filter screen, and then clean air enters the air inlet pipeline 2 through the air outlet 102, enters the air storage box 5 through the air inlet pipeline 2 and then enters the air compressor 7.
The ventilation air of the air inlet pipeline 2 is measured through the flowmeter, when the measured air inflow in unit time is smaller than a preset threshold value, the controller controls the driving motor to drive the filter cartridge 13 to rotate, controls the vibrator 15 to drive the first filter screen 11 and the second filter screen to vibrate, impurity particles attached to the filter cartridge 13, the first filter screen 11 and the second filter screen fall off, the fallen impurity particles are sucked into the air exhaust pipeline 4 by the air extractor 3, and the impurity particles are discharged through the air exhaust pipeline 4, so that the filter cartridge 13, the first filter screen 11 and the second filter screen are flushed and cleaned.
In summary, the embodiment of the invention provides an air compressor inlet air filtering device, which filters the inlet air step by step through a first filter screen 11 and a filter cartridge 13 in a filter box 1, so that the air entering an air compressor 7 through an air inlet pipeline 2 is clean. Utilize vibrator 15 vibration first filter screen 11 for the gaseous impurity granule that adheres to on first filter screen 11 drops, rotates through drive cartridge filter 13, makes the gaseous impurity granule that adheres to on cartridge filter 13 drop, and through air extraction device suction gas, the gaseous impurity granule that will drop discharges outside the rose box 1, is favorable to thoroughly cleaning first filter screen 11 and cartridge filter 13, improves clean effect, can avoid frequently changing first filter screen 11 or cartridge filter 13. In addition, the invention reduces noise pollution by arranging the first silencer plate 12 and the second silencer plate 14 in the filter box 1 and performing noise reduction treatment on the inlet air.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.
Claims (8)
1. An air compressor inlet air filter device, characterized by comprising:
the filter box is characterized in that an air inlet and an air extraction opening are formed in the top of the filter box, an air outlet is formed in the bottom of the filter box, a first filter screen, a first silencing plate, a filter cartridge and a second silencing plate are sequentially arranged in the filter box from top to bottom, a vibrator is arranged on the first filter screen, the central axis of the filter cartridge is perpendicular to the side wall of the filter box, and two ends of the filter cartridge are respectively rotatably installed on the side wall of the filter box; the first filter screen, the first silencing plate and the second silencing plate are fixedly connected with the side wall of the filter box; the two ends of the filter cylinder are arranged on the same rotating shaft, the rotating shaft and the central axis of the filter cylinder are coaxially arranged, one end of the rotating shaft penetrates through the cylinder top of the filter cylinder to be connected with one side wall of the filter box, and the other end of the rotating shaft penetrates through the cylinder bottom of the filter cylinder to be connected with the other side wall of the filter box; the rotating shaft is provided with a plurality of spiral blades, and the plurality of spiral blades are distributed along the length direction of the rotating shaft;
one end of the air inlet pipeline is connected with the air outlet, and the other end of the air inlet pipeline is connected with the air compressor;
the air extracting device is arranged at the outer side of the filter box and is connected with the air extracting opening;
and the driving motor is in transmission connection with the filter cartridge.
2. The air compressor inlet air filter device of claim 1, further comprising an air reservoir, wherein the air inlet pipe is connected to the air reservoir, and wherein the air reservoir is connected to the air compressor.
3. The air compressor inlet filter device according to claim 2, wherein a gas inlet and a gas outlet are provided on the gas storage tank, the gas inlet is provided at a lower portion of the gas storage tank, and the gas outlet is provided at an upper portion of the gas storage tank.
4. The air compressor inlet filter device according to claim 2, wherein an air flow meter is provided on the inlet pipe, and the air flow meter is located between the air outlet and the air tank.
5. The air compressor inlet filter device of claim 4, further comprising a controller, wherein the air flow meter, the drive motor, the vibrator, and the air extraction device are all electrically connected to the controller.
6. The air compressor inlet filter device according to claim 1, wherein the air extractor comprises a silencing cover, an air extractor and an air extraction pipeline, the air extraction pipeline is connected with the air extraction opening, the air extractor is installed on the air extraction pipeline, the silencing cover is arranged on the periphery of the air extractor, and a through hole for the air extraction pipeline to pass through is formed in the silencing cover.
7. The air compressor inlet filter device according to claim 1, wherein a second filter screen is arranged below the second silencing plate, and the second filter screen is fixedly connected with the side wall of the filter box.
8. The air compressor inlet filter device of claim 1, wherein the upper surfaces of the first and second muffler plates are each provided with a plurality of grooves.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110916592.1A CN113482888B (en) | 2021-08-10 | 2021-08-10 | Air compressor machine filter equipment that admits air |
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| CN202110916592.1A CN113482888B (en) | 2021-08-10 | 2021-08-10 | Air compressor machine filter equipment that admits air |
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| CN113482888A CN113482888A (en) | 2021-10-08 |
| CN113482888B true CN113482888B (en) | 2023-04-25 |
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| CN114526937B (en) * | 2022-04-22 | 2022-07-01 | 中国飞机强度研究所 | Hot air replacement system for testing high-temperature environment of airplane and replacement method thereof |
| CN116772442B (en) * | 2023-08-24 | 2023-11-03 | 江苏咏纯制冷设备有限公司 | Double-stage screw refrigerating unit |
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| CN103239951A (en) * | 2012-02-07 | 2013-08-14 | 南通龙鹰真空泵业有限公司 | Improved filtrating device of vacuum pump |
| CN104963797B (en) * | 2015-07-03 | 2017-10-10 | 广东技术师范学院 | A kind of automotive air cleaner core cleaning device and clean method |
| CN207996501U (en) * | 2017-06-27 | 2018-10-23 | 俊杰机械(深圳)有限公司 | A kind of air filter and the surface processing equipment with the device |
| CN208778189U (en) * | 2018-07-20 | 2019-04-23 | 重庆四方新材股份有限公司 | A kind of compressed air feedway |
| CN110694365A (en) * | 2019-11-08 | 2020-01-17 | 江苏集萃有机光电技术研究所有限公司 | Dust filtering device and dust filtering control method |
| CN112065694A (en) * | 2020-08-26 | 2020-12-11 | 胡单 | Compressor air filter element |
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