CN203584716U - Oil-free two-stage air compressor - Google Patents
Oil-free two-stage air compressor Download PDFInfo
- Publication number
- CN203584716U CN203584716U CN201320800595.XU CN201320800595U CN203584716U CN 203584716 U CN203584716 U CN 203584716U CN 201320800595 U CN201320800595 U CN 201320800595U CN 203584716 U CN203584716 U CN 203584716U
- Authority
- CN
- China
- Prior art keywords
- high pressure
- crankcase
- low pressure
- air compressor
- hole
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides an oil-free two-stage air compressor, and belongs to the technical field of machines. The technical problem that an existing air compressor is low in operation stability is solved. The oil-free two-stage air compressor comprises an oil storage tank, a motor and a pump head. The pump head comprises a crank case and a crank shaft placed in the crank case, the front end of the crank shaft penetrates through the side wall of the crank case and is connected with a first belt pulley, the output end of the motor is fixedly connected with a second belt pulley, and the second belt pulley is connected with the first belt pulley through a belt. The pump head further comprises a low pressure air cylinder and a high pressure air cylinder, the lower pressure air cylinder is provided with an air suction pipe, the lower pressure air cylinder is communicated with the high pressure air cylinder through a first exhaust pipe, and the high pressure air cylinder is communicated with the air storage tank through a second exhaust pipe. A low pressure piston connected with the crank shaft is inserted in the low pressure air cylinder, a high pressure piston connected with the crank shaft is inserted in the high pressure air cylinder, and a through structure allowing airflow to pass through is further arranged on the crank case. The oil-free two-stage air compressor has the advantages of being good in operation stability, high in compression efficiency and the like.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of oil free type two-stage air compressor.
Background technique
Air compressor is as a kind of important production of energy form, be widely used in the links of life, especially medicine, food etc. are from multi-field, existing compressor generally adopts oil lubrication, in use, need to regularly replace lubricant oil and add in time lubricant oil, so not only having increased cost of production, and easily product has been polluted.
China patent CN 202012466U discloses a kind of oil-free air compressor, comprise bearing, bearing is provided with gas holder, the upper surface of gas holder is connected with the first supporting base and power plant, the first supporting base is provided with crankcase, crankcase is provided with cylinder, crankcase communicates with cylinder, in the rear wall of crankcase, by clutch shaft bearing, be connected with bent axle one end, the other end of bent axle is through the antetheca of crankcase, and be connected with drive wheel, drive wheel is connected with power plant by driving belt, between the antetheca of bent axle and crankcase, by the second bearing, be connected, bent axle is arranged in cover on the position of crankcase the first fixed cover, between the first fixed cover and bent axle, by ball bearing, be connected, in cylinder, be provided with piston, on piston, by needle bearing, be connected with the second fixed cover, the second fixed cover is connected with the first fixed cover by connecting rod.Above-mentioned patent structure simply, does not need lubricant oil.
But the crankcase in above-mentioned patent is airtight, when piston moves towards the direction of crankcase, can reduce the volume of crankcase, thereby increase the gas pressure in crankcase, and then the load that has increased motor, reduce the operation stability of air compressor; In addition,, due to the seal structure of crankcase, during air compressor operation, the inner heat producing of crankcase can not be distributed in time, makes complete machine in the condition of high temperature, affects the gas compression efficiency of air compressor.
Summary of the invention
The utility model is the problems referred to above that exist for existing technology, a kind of oil free type two-stage air compressor is provided, technical problem to be solved in the utility model is: how by reducing the gas pressure in crankcase, thereby reduce the load of motor, improve the operation stability of air compressor.
The purpose of this utility model can realize by following technical proposal:
A kind of oil free type two-stage air compressor, described air compressor comprises gas holder, motor and pump head, described motor and pump head are all fixed on the upper-end surface of described gas holder, it is characterized in that, described pump head comprises crankcase and is positioned at the bent axle of this crankcase, described crankcase is fixed on the upper-end surface of described gas holder, the rear end of described bent axle is articulated on the sidewall of described crankcase, the front end of described bent axle passes the sidewall of described crankcase and is connected with the first belt pulley, the output terminal of described motor is fixed with the second belt pulley, described the second belt pulley is connected with described the first belt pulley by a belt, described pump head also comprises a low-pressure cylinder and a high pressure cylinder, described low-pressure cylinder and high pressure cylinder are all fixed on the upper end of described crankcase and are connected with this crankcase, wherein, on described low-pressure cylinder, be provided with a sucking pipe, described low-pressure cylinder is connected with described high pressure cylinder by a downtake pipe, and described high pressure cylinder is connected with described gas holder by a second exhaust pipe, in described low-pressure cylinder, be plugged with a low pressure piston, described low pressure piston is connected with described bent axle by a low pressure connecting rod, in described high pressure cylinder, be plugged with a high pressure piston, described high pressure piston is connected with described bent axle by a high-pressure connecting rod, the bottom of described crankcase also offers the permeable structures that air feed stream passes through.
Its working principle is as follows: during the operation of this air compressor, motor drives the first belt pulley to rotate by belt, and then crankshaft-synchronous is rotated, and makes low pressure piston and high pressure piston in low-pressure cylinder and high pressure cylinder, make respectively reciprocal fore and aft motion; Low-pressure cylinder sucks gas in cylinder barrel by sucking pipe, low pressure piston carries out one-level compression by gas, and by downtake pipe, the gas after compression is delivered in high pressure cylinder, high pressure piston carries out two-stage compression to gas, then the gas after compression is delivered in gas holder by second exhaust pipe; Because the bottom at crankcase also offers the permeable structures that air feed stream passes through, when low pressure piston and high pressure piston are when reciprocating, gas in crankcase can flow out glibly from permeable structures, avoid the air pressure in crankcase to increase and the load of increase motor, thereby improve the operation stability of this air compressor; In addition, owing to being designed with permeable structures, the heat in crankcase can be discharged from this permeable structures, avoids heat accumulation in crankcase, to affect the gas compression efficiency of this air compressor.
In above-mentioned a kind of oil free type two-stage air compressor, described pump head also comprises an air-filtering baffler, described air-filtering baffler is fixed on described low-pressure cylinder, and described air-filtering baffler is connected with described low-pressure cylinder by described sucking pipe.Be designed with after air-filtering baffler, can filter the air entering in low-pressure cylinder, avoid containing in the gas access arrangement of more impurity and corrosive material, equipment being caused to wearing and tearing or corrosion; Noise simultaneously that produce in the time of can reducing again the operation of this air compressor; The production technology of this air-filtering baffler is comparatively ripe, and the air-strainer using on current numerous automobiles can be realized same effect.
In above-mentioned a kind of oil free type two-stage air compressor, described bent axle comprises main journal and the connecting rod neck being connected as a single entity, the inner of described low pressure connecting rod offers low pressure big end hole, the inner of described high-pressure connecting rod offers high pressure big end hole, and described connecting rod neck is plugged in described low pressure big end hole and high pressure big end hole simultaneously.
In above-mentioned a kind of oil free type two-stage air compressor, the outer end of described low pressure connecting rod and high-pressure connecting rod offers respectively low pressure microcephaly hole and high pressure microcephaly hole, on described low pressure piston, offer the low pressure pin-and-hole corresponding with described low pressure microcephaly hole, in described low pressure pin-and-hole and low pressure microcephaly hole, be plugged with low pressure piston pin simultaneously; On described high pressure piston, offer the high pressure pin-and-hole corresponding with described high pressure microcephaly hole, in described high pressure pin-and-hole and high pressure microcephaly hole, be plugged with high pressure piston pin simultaneously.
In above-mentioned a kind of oil free type two-stage air compressor, on the sidewall of described low pressure piston and the sidewall of high pressure piston, all offer the first circular groove, in described the first circular groove, be embedded with guide ring; On the sidewall of described low pressure piston and the sidewall of high pressure piston, also offer the second circular groove, in described the second circular groove, be embedded with stainless steel elastic force ring; On the sidewall of described low pressure piston and the sidewall of high pressure piston, also offer the 3rd circular groove, in described the 3rd circular groove, be embedded with piston ring; Described the second circular groove is between described the first circular groove and the 3rd circular groove.Be designed with stainless steel elastic force ring, can improve the sealing between low pressure piston and low-pressure cylinder, high pressure piston and high pressure cylinder; Be designed with after guide ring, can prevent that low pressure piston and high pressure piston from directly contacting with cylinder body when fore and aft motion, avoids the wearing and tearing of low pressure piston and high pressure piston; Be designed with after piston ring, can avoid the gas in cylinder body to drain in crankcase, improve the gas compression performance of this air compressor.
In above-mentioned a kind of oil free type two-stage air compressor, as a kind of scheme, the bottom of described crankcase is the plate body that a stainless steel is made, and described permeable structures comprises that several are opened in the through hole on described plate body, the identical and equal and opposite in direction of the shape of described several through holes.By the bottom design of crankcase, be the plate body that offers through hole, the intensity while guaranteeing crankcase bottom, guarantee that again gas can flow out swimmingly in through hole.
In above-mentioned a kind of oil free type two-stage air compressor, as another kind of scheme, the bottom of described crankcase comprises the some longerons that interweave in length and breadth and crossbeam, and the interweave mesh that surrounds of described some longerons and crossbeam is described permeable structures.By the bottom design of crankcase, be the some longerons that interweave in length and breadth and crossbeam, and mesh is described permeable structures, can guarantees to greatest extent that like this gas in crankcase discharges swimmingly in case.
In above-mentioned a kind of oil free type two-stage air compressor, the bottom of described crankcase is also installed with several supporting bases, and described supporting base is fixed on the upper end surface of described gas holder by screw.Be designed with after supporting base, make to have certain gap between permeable structures and gas holder, air-flow can flow to outside air compressor by this gap.
Compared with prior art, the utlity model has following advantage:
1, this air compressor offers in the bottom of crankcase the permeable structures that air feed stream passes through, when low pressure piston and high pressure piston are when reciprocating, gas in crankcase can flow out glibly from permeable structures, avoid the air pressure in crankcase to increase and the load of increase motor, thereby improve the operation stability of this air compressor; In addition, owing to being designed with permeable structures, the heat in crankcase can be discharged from this permeable structures, avoids heat accumulation in crankcase, to affect the gas compression efficiency of this air compressor;
2, be designed with after air-filtering baffler, can filter the air entering in low-pressure cylinder, avoid containing in the gas access arrangement of more impurity and corrosive material, equipment being caused to wearing and tearing or corrosion; Noise simultaneously that produce in the time of can reducing again the operation of this air compressor; The production technology of this air-filtering baffler is comparatively ripe, and the air-strainer using on current numerous automobiles can be realized same effect.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of this air compressor in embodiment.
Fig. 2 is the sectional view of this air compressor in embodiment.
Fig. 3 is the structural representation of this bent axle in embodiment.
In figure, 1, bent axle; 2, crankcase; 3, the first belt pulley; 4, low-pressure cylinder; 5, high pressure cylinder; 6, downtake pipe; 7, low pressure piston; 8, low pressure connecting rod; 9, high pressure piston; 10, high-pressure connecting rod; 11, air-filtering baffler; 12, main journal; 13, connecting rod neck; 14, low pressure piston pin; 15, high pressure piston pin; 16, guide ring; 17, stainless steel elastic force ring; 18, piston ring; 19, supporting base; 20, through hole.
Embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, this air compressor comprises gas holder, motor and pump head, motor and pump head are all fixed on the upper-end surface of gas holder, it is characterized in that, pump head comprises crankcase 2 and is positioned at the bent axle 1 of this crankcase 2, crankcase 2 is fixed on the upper-end surface of gas holder, the rear end of bent axle 1 is articulated on the sidewall of crankcase 2, the front end of bent axle 1 passes the sidewall of crankcase 2 and is connected with the first belt pulley 3, the output terminal of motor is fixed with the second belt pulley, and the second belt pulley is connected with the first belt pulley 3 by a belt; Pump head also comprises a low-pressure cylinder 4 and a high pressure cylinder 5, low-pressure cylinder 4 and high pressure cylinder 5 are all fixed on the upper end of crankcase 2 and are connected with this crankcase 2, wherein, on low-pressure cylinder 4, be provided with a sucking pipe, low-pressure cylinder 4 is connected with high pressure cylinder 5 by a downtake pipe 6, pump head also comprises an air-filtering baffler 11, and air-filtering baffler 11 is fixed on low-pressure cylinder 4, and the sucking pipe that air-filtering baffler 11 passes through is connected with low-pressure cylinder 4.High pressure cylinder 5 is connected with gas holder by a second exhaust pipe; In low-pressure cylinder 4, be plugged with a low pressure piston 7, low pressure piston 7 is connected with bent axle 1 by a low pressure connecting rod 8; In high pressure cylinder 5, be plugged with a high pressure piston 9, high pressure piston 9 is connected with bent axle 1 by a high-pressure connecting rod 10;
As shown in Figure 2 and Figure 3, bent axle 1 comprises main journal 12 and the connecting rod neck 13 being connected as a single entity, the inner of low pressure connecting rod 8 offers low pressure big end hole, and the inner of high-pressure connecting rod 10 offers high pressure big end hole, and connecting rod neck 13 is plugged in low pressure big end hole and high pressure big end hole simultaneously.The outer end of low pressure connecting rod 8 and high-pressure connecting rod 10 offers respectively low pressure microcephaly hole and high pressure microcephaly hole, offers the low pressure pin-and-hole corresponding with low pressure microcephaly hole on low pressure piston 7, in low pressure pin-and-hole and low pressure microcephaly hole, is plugged with low pressure piston pin 14 simultaneously; On high pressure piston 9, offer the high pressure pin-and-hole corresponding with high pressure microcephaly hole, in high pressure pin-and-hole and high pressure microcephaly hole, be plugged with high pressure piston pin 15 simultaneously.On the sidewall of the sidewall of low pressure piston 7 and high pressure piston 9, all offer the first circular groove, in the first circular groove, be embedded with guide ring 16; On the sidewall of the sidewall of low pressure piston 7 and high pressure piston 9, also offer the second circular groove, in the second circular groove, be embedded with stainless steel elastic force ring 17; On the sidewall of the sidewall of low pressure piston 7 and high pressure piston 9, also offer the 3rd circular groove, in the 3rd circular groove, be embedded with piston ring 18; The second circular groove is between the first circular groove and the 3rd circular groove.
As shown in Figure 2, the bottom of this crankcase 2 also offers the permeable structures that air feed stream passes through.In the present embodiment, the bottom of crankcase 2 is the plate body that a stainless steel is made, and permeable structures comprises that several are opened in the through hole 20 on plate body, the identical and equal and opposite in direction of the shape of several through holes 20.As other scheme, the bottom of crankcase 2 comprises the some longerons that interweave in length and breadth and crossbeam, some longerons and the crossbeam permeable structures that the mesh that surrounds is that interweaves.As preferably, the bottom of crankcase 2 is also installed with several supporting bases 19, and supporting base 19 is fixed on the upper end surface of gas holder by screw.
Working principle of the present utility model is as follows: this air compressor offers in the bottom of crankcase the permeable structures that air feed stream passes through, when low pressure piston and high pressure piston are when reciprocating, gas in crankcase can flow out glibly from permeable structures, avoid the air pressure in crankcase to increase and the load of increase motor, thereby improve the operation stability of this air compressor; In addition, owing to being designed with permeable structures, the heat in crankcase can be discharged from this permeable structures, avoids heat accumulation in crankcase, to affect the gas compression efficiency of this air compressor.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (8)
1. an oil free type two-stage air compressor, described air compressor comprises gas holder, motor and pump head, described motor and pump head are all fixed on the upper-end surface of described gas holder, it is characterized in that, described pump head comprises crankcase (2) and is positioned at the bent axle (1) of this crankcase (2), described crankcase (2) is fixed on the upper-end surface of described gas holder, the rear end of described bent axle (1) is articulated on the sidewall of described crankcase (2), the front end of described bent axle (1) passes the sidewall of described crankcase (2) and is connected with the first belt pulley (3), the output terminal of described motor is fixed with the second belt pulley, described the second belt pulley is connected with described the first belt pulley (3) by a belt, described pump head also comprises a low-pressure cylinder (4) and a high pressure cylinder (5), described low-pressure cylinder (4) and high pressure cylinder (5) are all fixed on the upper end of described crankcase (2) and are connected with this crankcase (2), wherein, described low-pressure cylinder is provided with a sucking pipe on (4), described low-pressure cylinder (4) is connected with described high pressure cylinder (5) by a downtake pipe (6), and described high pressure cylinder (5) is connected with described gas holder by a second exhaust pipe, in described low-pressure cylinder (4), be plugged with a low pressure piston (7), described low pressure piston (7) is connected with described bent axle (1) by a low pressure connecting rod (8), in described high pressure cylinder (5), be plugged with a high pressure piston (9), described high pressure piston (9) is connected with described bent axle (1) by a high-pressure connecting rod (10), the bottom of described crankcase (2) also offers the permeable structures that air feed stream passes through.
2. oil free type two-stage air compressor according to claim 1, it is characterized in that, described pump head also comprises an air-filtering baffler (11), it is upper that described air-filtering baffler (11) is fixed on described low-pressure cylinder (4), and described air-filtering baffler (11) is connected with described low-pressure cylinder (4) by described sucking pipe.
3. oil free type two-stage air compressor according to claim 2, it is characterized in that, described bent axle (1) comprises main journal (12) and the connecting rod neck (13) being connected as a single entity, the inner of described low pressure connecting rod (8) offers low pressure big end hole, the inner of described high-pressure connecting rod (10) offers high pressure big end hole, and described connecting rod neck (13) is plugged in described low pressure big end hole and high pressure big end hole simultaneously.
4. oil free type two-stage air compressor according to claim 3, it is characterized in that, the outer end of described low pressure connecting rod (8) and high-pressure connecting rod (10) offers respectively low pressure microcephaly hole and high pressure microcephaly hole, on described low pressure piston (7), offer the low pressure pin-and-hole corresponding with described low pressure microcephaly hole, in described low pressure pin-and-hole and low pressure microcephaly hole, be plugged with low pressure piston pin (14) simultaneously; On described high pressure piston (9), offer the high pressure pin-and-hole corresponding with described high pressure microcephaly hole, in described high pressure pin-and-hole and high pressure microcephaly hole, be plugged with high pressure piston pin (15) simultaneously.
5. oil free type two-stage air compressor according to claim 4, is characterized in that, on the sidewall of the sidewall of described low pressure piston (7) and high pressure piston (9), all offers the first circular groove, is embedded with guide ring (16) in described the first circular groove; On the sidewall of the sidewall of described low pressure piston (7) and high pressure piston (9), also offer the second circular groove, in described the second circular groove, be embedded with stainless steel elastic force ring (17); On the sidewall of the sidewall of described low pressure piston (7) and high pressure piston (9), also offer the 3rd circular groove, in described the 3rd circular groove, be embedded with piston ring (18); Described the second circular groove is between described the first circular groove and the 3rd circular groove.
6. oil free type two-stage air compressor according to claim 5, it is characterized in that, the bottom of described crankcase (2) is the plate body that a stainless steel is made, described permeable structures comprises that several are opened in the through hole (20) on described plate body, the identical and equal and opposite in direction of the shape of described several through holes (20).
7. oil free type two-stage air compressor according to claim 5, is characterized in that, the bottom of described crankcase (2) comprises the some longerons that interweave in length and breadth and crossbeam, and the interweave mesh that surrounds of described some longerons and crossbeam is described permeable structures.
8. oil free type two-stage air compressor according to claim 1, is characterized in that, the bottom of described crankcase (2) is also installed with several supporting bases (19), and described supporting base (19) is fixed on the upper end surface of described gas holder by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800595.XU CN203584716U (en) | 2013-12-09 | 2013-12-09 | Oil-free two-stage air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320800595.XU CN203584716U (en) | 2013-12-09 | 2013-12-09 | Oil-free two-stage air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203584716U true CN203584716U (en) | 2014-05-07 |
Family
ID=50582648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320800595.XU Expired - Fee Related CN203584716U (en) | 2013-12-09 | 2013-12-09 | Oil-free two-stage air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203584716U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257510A (en) * | 2015-11-20 | 2016-01-20 | 台州市伸顺电机制造有限公司 | Pump head on air oil-less compressor |
| CN105526099A (en) * | 2016-01-19 | 2016-04-27 | 王尉 | Air compressor based on Hall permanent-magnet induction motor |
| CN106150971A (en) * | 2016-07-22 | 2016-11-23 | 瑞立集团瑞安汽车零部件有限公司 | A kind of two stages of compression vehicle piston oilless air compressor |
| CN117662429A (en) * | 2024-01-30 | 2024-03-08 | 江苏亚洋压缩机有限公司 | Oilless air compressor with cooling system |
-
2013
- 2013-12-09 CN CN201320800595.XU patent/CN203584716U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257510A (en) * | 2015-11-20 | 2016-01-20 | 台州市伸顺电机制造有限公司 | Pump head on air oil-less compressor |
| CN105526099A (en) * | 2016-01-19 | 2016-04-27 | 王尉 | Air compressor based on Hall permanent-magnet induction motor |
| CN106150971A (en) * | 2016-07-22 | 2016-11-23 | 瑞立集团瑞安汽车零部件有限公司 | A kind of two stages of compression vehicle piston oilless air compressor |
| CN117662429A (en) * | 2024-01-30 | 2024-03-08 | 江苏亚洋压缩机有限公司 | Oilless air compressor with cooling system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203584716U (en) | Oil-free two-stage air compressor | |
| CN203584712U (en) | Oil-free air compressor | |
| CN202789381U (en) | Air compressor convenient to mount | |
| CN202056020U (en) | Secondary-level pressurizing horizontal type vehicle-mounted air compressor | |
| CN111271255A (en) | Air compressor for compressing gas and improving gas pressure | |
| CN201560910U (en) | Non-oil lubrication piston reciprocating type air compressor | |
| CN203925923U (en) | The good compressor of a kind of efficient stable | |
| CN205225614U (en) | Direct -connection type oil -free air compressor | |
| CN205779551U (en) | A kind of reciprocating compressor | |
| CN204327436U (en) | A kind of Oil-free Mechanical Vacuum Pump air compressor | |
| CN204941933U (en) | A kind of scroll air compressor simplifying lubricating oil return oil channel structures | |
| CN203809232U (en) | Multi-cylinder bearing-gear-combined connecting rod type coplanar compressor | |
| CN105422449A (en) | Cantilever type oil-free double-toothed rotor compressor | |
| CN201162546Y (en) | High-efficiency energy-saving radial piston type pneumatic motor | |
| CN203584715U (en) | Piston type oil-free air compressor | |
| CN2908853Y (en) | Hydraulic drive structure of producing compressed gas | |
| CN201963511U (en) | Air compressor | |
| CN203081685U (en) | Double-cylinder double-acting linear reciprocating air compressor | |
| CN209781151U (en) | Oil-free piston type air compressor | |
| CN207673504U (en) | Novel two-stage compresses linear piston compressor | |
| CN103352826A (en) | Oilless vertical vacuum pump | |
| CN206129523U (en) | Reciprocating vacuum pump | |
| CN211598948U (en) | Crankshaft for refrigeration compressor | |
| CN203594570U (en) | Air oil-less compressor driven by symmetric cam | |
| CN205260278U (en) | A diaphragm pump for fertile production of liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: The ancient city of Taizhou City 317000 Street coastal city of Zhejiang province Xu Shu Village Patentee after: Zhejiang leopard machinery Limited by Share Ltd Address before: The town of sand village in Wenling City, Taizhou city of Zhejiang Province in 317525 Patentee before: Zhejiang Jiebao Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20171209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |