CN105402103A - Direct connection type oilless air compressor - Google Patents
Direct connection type oilless air compressor Download PDFInfo
- Publication number
- CN105402103A CN105402103A CN201510935279.7A CN201510935279A CN105402103A CN 105402103 A CN105402103 A CN 105402103A CN 201510935279 A CN201510935279 A CN 201510935279A CN 105402103 A CN105402103 A CN 105402103A
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- CN
- China
- Prior art keywords
- valve plate
- air compressor
- cylinder cap
- oil
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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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
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
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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
- F04B39/10—Adaptations or arrangements of distribution members
-
- 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
- F04B39/125—Cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
Abstract
The invention provides a direct connection type oilless air compressor, and belongs to the technical field of machines. The problems that an existing direct connection type oilless air compressor is poor in heat radiation, short in service life and the like are solved. The direct connection type oilless air compressor comprises a tank and a motor arranged in the tank. Crank cases are arranged at the two ends of the tank. Motor shafts of the motor stretch out to penetrate the tank to stretch into the crank cases. The ends of the motor shafts are fixedly connected with cranks and fan blades. One end of each crank is fixedly connected with a connecting rod with a piston. Air cylinders are arranged on the upper portions of the crank cases and comprise cylinder bodies and cylinder covers. Valve plates are arranged between the cylinder covers and the pistons. Air inlets, air outlets and pits allowing the valve plates to be embedded are formed in the cylinder covers. The air inlets and the air outlets are communicated with the interiors of the pits. Each pit is provided with a step. Two air inlet holes are formed in each step, and air inlet valve pieces are arranged on the lower surfaces of the two air inlet holes of each step. Two exhaust holes are formed in each valve plate, and exhaust valve pieces are arranged on the upper surfaces of the two exhaust holes of each valve plate. The direct connection type oilless air compressor has the beneficial effects of being good in cooling effect, long in service life and the like.
Description
Technical field
The invention belongs to field of mechanical technique, relate to air compressor, particularly a kind of Oil-free Mechanical Vacuum Pump air compressor.
Background technique
Air compressor is as a kind of important production of energy form, be widely used in the links of living, especially medicine, food etc. vertical multi-field in, because traditional compressor generally adopts oil lubrication, in use, need periodic replacement lubricant oil and add lubricant oil in time, this not only increases cost of production, and easily product is polluted.According to above Problems existing, people have invented oil-free air compressor.
Such as, disclose a kind of oil-free air compressor in Chinese patent literature data and applied for patent [application number: 201120102351.5, Authorization Notice No.: CN202012466U], it comprises bearing, bearing is provided with gas holder, the upper surface of gas holder is connected with the first supporting base and power plant, first supporting base is provided with crankcase, crankcase is provided with cylinder, crankcase communicates with cylinder, bent axle one end is connected with by clutch shaft bearing in the rear wall of crankcase, the other end of bent axle passes the antetheca of crankcase, and be connected with drive wheel, drive wheel is connected with power plant by driving belt, be connected by the second bearing between bent axle and the antetheca of crankcase, on the position that bent axle is arranged in crankcase, cover has the first fixed cover, first fixed cover is connected by ball bearing with between bent axle, piston is provided with in cylinder, piston is connected with the second fixed cover by needle bearing, second fixed cover is connected with the first fixed cover by connecting rod.
Above-mentioned air compressor structure simply, not needs lubricant oil.But its crankcase is airtight, when piston moves towards the direction of crankcase, the volume of crankcase can be reduced, thus increase the gas pressure in crankcase, and then increase the load of motor, reduce the operation stability of air compressor; In addition, due to the seal structure of crankcase, the heat that when air compressor runs, crankcase inside produces can not be distributed in time, makes complete machine be in the condition of high temperature, affects the gas compression efficiency of air compressor.
Valve plate, between cylinder head and piston, is one of kernel component of air compressor inlet and exhaust system, and the quality of its design directly affects the performance of air compressor.The valve plate of existing air compressor is provided with inlet hole and exhaust port, and the lower surface of inlet hole is provided with air-intake valve plate, and the upper surface of exhaust port is provided with valve block of giving vent to anger.During air compressor work, creep is there is respectively in air-intake valve plate and gas outlet valve sector-meeting toward direction in the hole of inlet hole and exhaust port, valve block is directly contacted with the corner, hole of exhaust port with inlet hole, and the direct collision of give vent to anger valve block and piston can make to give vent to anger, the working life of valve block shortens.
Summary of the invention
The object of the invention is for the above-mentioned problems in the prior art, provide a kind of good heat dissipation effect, the Oil-free Mechanical Vacuum Pump air compressor of long service life.
Object of the present invention realizes by following technical proposal: a kind of Oil-free Mechanical Vacuum Pump air compressor, comprise casing and be arranged at the motor in casing, the two ends of described casing are all provided with crankcase, the motor shaft of described motor extends through casing and stretches in crankcase, described motor shaft ends is fixed with crank and fan blade, described crank one end is fixed with the connecting rod having installed piston, described crankcase top is provided with cylinder, described cylinder comprises cylinder body and cylinder cap, valve plate is provided with between described cylinder cap and piston, it is characterized in that, described cylinder cap offers suction port, air outlet and the pit embedded for valve plate, described suction port and air outlet are all connected with pit inside, described pit has a stepped part and stepped part offers two inlet holes, the lower surface of two described inlet holes is provided with air-intake valve plate, described valve plate offers two exhaust ports and the upper surface of two exhaust ports is provided with exhaust valve plate.
The working principle of this Oil-free Mechanical Vacuum Pump air compressor is as follows: take motor as power source, directly drive crank-connecting rod, and crank-connecting rod drives piston reciprocating in cylinder, carries out air compressing.Its air-intake valve plate and exhaust valve plate are arranged on cylinder cap lower surface and valve plate upper surface respectively, and the air-intake valve plate of operation and exhaust valve plate avoid and make its longer service life with the collision of piston.
In above-mentioned a kind of Oil-free Mechanical Vacuum Pump air compressor, described crankcase with there is between cylinder body the heat dissipation channel be connected, described cylinder cap upper surface is distributed with several radiating fin, and on described cylinder cap, between radiating fin, place offers the radiation hole be connected with heat dissipation channel.This vibrational power flow can make the radiating effect of this Oil-free Mechanical Vacuum Pump air compressor greatly promote, and then makes the gas compression efficiency of this air compressor.
In above-mentioned a kind of Oil-free Mechanical Vacuum Pump air compressor, connecting tube is provided with between cylinder cap on two described crankcases, there is in described connecting tube the through hole be connected with cylinder cap inside, the outer wall of described connecting tube is uniformly distributed with several Heat sinks, between described connecting tube and cylinder cap, is provided with O type circle.
In above-mentioned a kind of Oil-free Mechanical Vacuum Pump air compressor, stepped part on described pit offers the mounting hole one installed for air-intake valve plate, described air-intake valve plate is installed on the mounting hole one of stepped part by screw, is provided with short pad between described screw and air-intake valve plate.
In above-mentioned a kind of Oil-free Mechanical Vacuum Pump air compressor, described valve plate offers the mounting hole two installed for exhaust valve plate, described exhaust valve plate is installed on valve plate by screw, is provided with long pad between described screw and exhaust valve plate.
In above-mentioned a kind of Oil-free Mechanical Vacuum Pump air compressor, between described valve plate and cylinder cap, be provided with seal ring.
Compared with prior art, this Oil-free Mechanical Vacuum Pump air compressor has offered the radiation hole be connected with heat dissipation channel on cylinder cap, improves radiating effect; Air-intake valve plate and exhaust valve plate are arranged on cylinder cap lower surface and valve plate upper surface respectively, and the air-intake valve plate of operation and exhaust valve plate avoid and make its longer service life with the collision of piston.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of this Oil-free Mechanical Vacuum Pump air compressor.
Fig. 2 is the structural representation at cylinder cap and valve block place in this Oil-free Mechanical Vacuum Pump air compressor.
Fig. 3 is the structural representation of cylinder cap in this Oil-free Mechanical Vacuum Pump air compressor.
In figure, 1, casing; 2, motor; 2a, motor shaft; 3, crankcase; 4, crank; 5, fan blade; 6, connecting rod; 7, piston; 8, cylinder; 8a, cylinder body; 8b, cylinder cap; 9, valve plate; 10, suction port; 11, air outlet; 12, pit; 12a, stepped part; 13, inlet hole; 14, air-intake valve plate; 15, exhaust port; 16, exhaust valve plate; 17, heat dissipation channel; 18, radiating fin; 19, radiation hole; 20, connecting tube; 21, through hole; 22, Heat sink; 23, O type circle; 24, mounting hole one; 25, screw; 26, short pad; 27, mounting hole two; 28, long pad; 29, seal ring.
Embodiment
Be below specific embodiments of the invention and by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.
As Fig. 1, Fig. 2, shown in Fig. 3, the motor 2 that this Oil-free Mechanical Vacuum Pump air compressor comprises casing 1 and is arranged in casing 1, the two ends of casing 1 are all provided with crankcase 3, the motor shaft 2a of motor 2 extends through casing 1 and stretches in crankcase 3, motor shaft 2a end is fixed with crank 4 and fan blade 5, crank 4 one end is fixed with the connecting rod 6 having installed piston 7, crankcase 3 top is provided with cylinder 8, cylinder 8 comprises cylinder body 8a and cylinder cap 8b, valve plate 9 is provided with between described cylinder cap 8b and piston 7, cylinder cap 8b offers suction port 10, air outlet 11 and the pit 12 embedded for valve plate 9, suction port 10 and air outlet 11 are all connected with pit 12 inside, pit 12 has a stepped part 12a and stepped part 12a offers two inlet holes 13, the lower surface of two inlet holes 13 is provided with air-intake valve plate 14, valve plate 9 offers two exhaust ports 15 and the upper surface of two exhaust ports 15 is provided with exhaust valve plate 16.
In this Oil-free Mechanical Vacuum Pump air compressor, there is between its crankcase 3 with cylinder body 8a the heat dissipation channel 17 be connected, cylinder cap 8b upper surface is distributed with several radiating fin 18, and on cylinder cap 8b, between radiating fin 18, place offers the radiation hole 19 be connected with heat dissipation channel 17.
The radiating principle one of this Oil-free Mechanical Vacuum Pump air compressor is: heat is distributed by the radiation hole 19 on cylinder cap 8b by heat dissipation channel 17 through the effect of fan blade 5 by the heat that when air compressor runs, crankcase 3 inside produces, and the radiating fin 18 simultaneously on cylinder cap 8b also can help heat to distribute.
In this Oil-free Mechanical Vacuum Pump air compressor, connecting tube 20 is provided with between cylinder cap 8b on two crankcase 3, there is in connecting tube 20 through hole 21 be connected with cylinder cap 8b inside, the outer wall of connecting tube 20 is uniformly distributed with several Heat sinks 22, between connecting tube 20 and cylinder cap 8b, is provided with O type circle 23.
The radiating principle two of this Oil-free Mechanical Vacuum Pump air compressor is: the heat in connecting tube 20 distributes by the Heat sink 22 be arranged on connecting tube 20 outer wall.
Describe in detail further, in this Oil-free Mechanical Vacuum Pump air compressor, stepped part 12a on its pit 12 offers the mounting hole 1 installed for air-intake valve plate 14, air-intake valve plate 14 is installed on the mounting hole 1 of stepped part 12a by screw 25, short pad 26 is provided with between screw 25 and air-intake valve plate 14, valve plate 9 offers the mounting hole 2 27 installed for exhaust valve plate 16, exhaust valve plate 16 is installed on valve plate 9 by screw 25, is provided with long pad 28 between described screw 25 and exhaust valve plate 16.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ casing 1 herein, motor 2, motor shaft 2a, crankcase 3, crank 4, fan blade 5, connecting rod 6, piston 7, cylinder 8, cylinder body 8a, cylinder cap 8b, valve plate 9, suction port 10, air outlet 11, pit 12, stepped part 12a, inlet hole 13, air-intake valve plate 14, exhaust port 15, exhaust valve plate 16, heat dissipation channel 17, radiating fin 18, radiation hole 19, connecting tube 20, through hole 21, Heat sink 22, O type circle 23, mounting hole 1, screw 25, short pad 26, mounting hole 2 27, long pad 28, term such as seal ring 29 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (6)
1. an Oil-free Mechanical Vacuum Pump air compressor, comprise casing (1) and be arranged at the motor (2) in casing (1), the two ends of described casing (1) are all provided with crankcase (3), the motor shaft (2a) of described motor (2) extends through casing (1) and stretches in crankcase (3), described motor shaft (2a) end is fixed with crank (4) and fan blade (5), described crank (4) one end is fixed with the connecting rod (6) having installed piston (7), described crankcase (3) top is provided with cylinder (8), described cylinder (8) comprises cylinder body (8a) and cylinder cap (8b), valve plate (9) is provided with between described cylinder cap (8b) and piston (7), it is characterized in that, described cylinder cap (8b) offers suction port (10), air outlet (11) and the pit (12) embedded for valve plate (9), described suction port (10) is all connected with pit (12) inside with air outlet (11), described pit (12) has a stepped part (12a) and stepped part (12a) offers two inlet holes (13), the lower surface of two described inlet holes (13) is provided with air-intake valve plate (14), described valve plate (9) offers two exhaust ports (15) and the upper surface of two exhaust ports (15) is provided with exhaust valve plate (16).
2. a kind of Oil-free Mechanical Vacuum Pump air compressor according to claim 1, it is characterized in that, described crankcase (3) with there is between cylinder body (8a) heat dissipation channel (17) be connected, described cylinder cap (8b) upper surface is distributed with several radiating fin (18), described cylinder cap (8b) is positioned at place between radiating fin (18) and offers the radiation hole (19) be connected with heat dissipation channel (17).
3. a kind of Oil-free Mechanical Vacuum Pump air compressor according to claim 2, it is characterized in that, connecting tube (20) is provided with between cylinder cap (8b) on two described crankcases (3), there is in described connecting tube (20) through hole (21) be connected with cylinder cap (8b) inside, the outer wall of described connecting tube (20) is uniformly distributed with several Heat sinks (22), between described connecting tube (20) and cylinder cap (8b), is provided with O type circle (23).
4. a kind of Oil-free Mechanical Vacuum Pump air compressor according to claim 1, it is characterized in that, stepped part (12a) on described pit (12) offers the mounting hole one (24) installed for air-intake valve plate (14), described air-intake valve plate (14) is installed on the mounting hole one (24) of stepped part (12a) by screw (25), is provided with short pad (26) between described screw (25) and air-intake valve plate (14).
5. a kind of Oil-free Mechanical Vacuum Pump air compressor according to claim 1, it is characterized in that, described valve plate (9) offers the mounting hole two (27) installed for exhaust valve plate (16), described exhaust valve plate (16) is installed on valve plate (9) by screw (25), is provided with long pad (28) between described screw (25) and exhaust valve plate (16).
6. a kind of Oil-free Mechanical Vacuum Pump air compressor according to claim 5, is characterized in that, is provided with seal ring (29) between described valve plate (9) and cylinder cap (8b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935279.7A CN105402103A (en) | 2015-12-15 | 2015-12-15 | Direct connection type oilless air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510935279.7A CN105402103A (en) | 2015-12-15 | 2015-12-15 | Direct connection type oilless air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105402103A true CN105402103A (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510935279.7A Pending CN105402103A (en) | 2015-12-15 | 2015-12-15 | Direct connection type oilless air compressor |
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| Country | Link |
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| CN (1) | CN105402103A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468254A (en) * | 2016-08-31 | 2017-03-01 | 浙江山海机械有限公司 | Piston intake heat radiating type oilless air compressor main machine structure |
| CN107725326A (en) * | 2017-11-06 | 2018-02-23 | 深圳市迈格电气有限公司 | Minimize air compressor |
| CN108343582A (en) * | 2017-11-11 | 2018-07-31 | 罗文青 | A kind of horizontally-opposed air-cooled vacuum pump of four cylinders |
| CN108894946A (en) * | 2018-08-31 | 2018-11-27 | 贵州佳能电机科技有限公司 | Double pump oxygenerator |
| CN109026615A (en) * | 2018-09-13 | 2018-12-18 | 江苏赫曦新能源有限公司 | A kind of oil-free piston compressor |
| CN109058069A (en) * | 2018-08-23 | 2018-12-21 | 浙江藤井空压机有限公司 | A kind of water-cooled oil-free air compressor machine |
| CN109519354A (en) * | 2018-12-04 | 2019-03-26 | 浙江巨霸焊接设备制造有限公司 | A kind of multi-cylinder air compressor machine |
| CN109611311A (en) * | 2018-12-06 | 2019-04-12 | 瑞立集团瑞安汽车零部件有限公司 | A kind of automobile-used oil-free piston type two-stage air compressor machine |
| CN110242534A (en) * | 2019-07-08 | 2019-09-17 | 耐力股份有限公司 | A kind of new energy has oily stage piston-type air compressor machine |
| CN110878744A (en) * | 2019-10-24 | 2020-03-13 | 浙江藤井空压机有限公司 | Air compressor machine aircraft nose |
| CN111396295A (en) * | 2020-04-07 | 2020-07-10 | 浙江杰豹机械股份有限公司 | Silent oilless cylinder cover and oilless machine |
| CN112648170A (en) * | 2020-12-31 | 2021-04-13 | 蒲友强 | Oilless air compression equipment |
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| US4915594A (en) * | 1986-04-25 | 1990-04-10 | Campbell Hausfeld/Scott Fetzer Company | Improved compressor crankshaft |
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| CN101832252A (en) * | 2010-05-05 | 2010-09-15 | 奉化市天风汽车空压机有限公司 | Energy-saving automobile water-cooling air compressor |
| CN102748270A (en) * | 2012-05-30 | 2012-10-24 | 李官镐 | Belt driving oil-free wave type air compressor with dustproof structure |
| CN203297059U (en) * | 2013-06-08 | 2013-11-20 | 宁波华生压缩机有限公司 | Mute oil-free type air compressor |
| CN205225614U (en) * | 2015-12-15 | 2016-05-11 | 浙江盛源空压机制造有限公司 | Direct -connection type oil -free air compressor |
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| US4915594A (en) * | 1986-04-25 | 1990-04-10 | Campbell Hausfeld/Scott Fetzer Company | Improved compressor crankshaft |
| CN2416252Y (en) * | 2000-02-26 | 2001-01-24 | 浙江开山股份有限公司 | Air-intaking & discharging combined valve for air compressor |
| CN101832252A (en) * | 2010-05-05 | 2010-09-15 | 奉化市天风汽车空压机有限公司 | Energy-saving automobile water-cooling air compressor |
| CN102748270A (en) * | 2012-05-30 | 2012-10-24 | 李官镐 | Belt driving oil-free wave type air compressor with dustproof structure |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468254B (en) * | 2016-08-31 | 2018-07-06 | 浙江山海机械有限公司 | Piston intake heat radiating type oilless air compressor main machine structure |
| CN106468254A (en) * | 2016-08-31 | 2017-03-01 | 浙江山海机械有限公司 | Piston intake heat radiating type oilless air compressor main machine structure |
| CN107725326A (en) * | 2017-11-06 | 2018-02-23 | 深圳市迈格电气有限公司 | Minimize air compressor |
| CN108343582A (en) * | 2017-11-11 | 2018-07-31 | 罗文青 | A kind of horizontally-opposed air-cooled vacuum pump of four cylinders |
| CN109058069B (en) * | 2018-08-23 | 2024-06-25 | 浙江藤井空压机有限公司 | Water-cooled oilless air compressor |
| CN109058069A (en) * | 2018-08-23 | 2018-12-21 | 浙江藤井空压机有限公司 | A kind of water-cooled oil-free air compressor machine |
| CN108894946A (en) * | 2018-08-31 | 2018-11-27 | 贵州佳能电机科技有限公司 | Double pump oxygenerator |
| CN109026615A (en) * | 2018-09-13 | 2018-12-18 | 江苏赫曦新能源有限公司 | A kind of oil-free piston compressor |
| CN109519354A (en) * | 2018-12-04 | 2019-03-26 | 浙江巨霸焊接设备制造有限公司 | A kind of multi-cylinder air compressor machine |
| CN109611311A (en) * | 2018-12-06 | 2019-04-12 | 瑞立集团瑞安汽车零部件有限公司 | A kind of automobile-used oil-free piston type two-stage air compressor machine |
| CN110242534B (en) * | 2019-07-08 | 2024-01-26 | 耐力股份有限公司 | New energy oil-containing two-stage piston air compressor |
| CN110242534A (en) * | 2019-07-08 | 2019-09-17 | 耐力股份有限公司 | A kind of new energy has oily stage piston-type air compressor machine |
| CN110878744A (en) * | 2019-10-24 | 2020-03-13 | 浙江藤井空压机有限公司 | Air compressor machine aircraft nose |
| CN110878744B (en) * | 2019-10-24 | 2021-07-20 | 浙江藤井空压机有限公司 | Air compressor machine aircraft nose |
| CN111396295A (en) * | 2020-04-07 | 2020-07-10 | 浙江杰豹机械股份有限公司 | Silent oilless cylinder cover and oilless machine |
| CN112648170A (en) * | 2020-12-31 | 2021-04-13 | 蒲友强 | Oilless air compression equipment |
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Application publication date: 20160316 |
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