CN112628120A - Special nitrogen compressor for liquid chemical storage emergency - Google Patents
Special nitrogen compressor for liquid chemical storage emergency Download PDFInfo
- Publication number
- CN112628120A CN112628120A CN202011554521.3A CN202011554521A CN112628120A CN 112628120 A CN112628120 A CN 112628120A CN 202011554521 A CN202011554521 A CN 202011554521A CN 112628120 A CN112628120 A CN 112628120A
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- China
- Prior art keywords
- fixedly connected
- nitrogen compressor
- movable plate
- gear
- shell
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Classifications
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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
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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
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
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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
- F04B39/14—Provisions for readily assembling or disassembling
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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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels
Abstract
The invention belongs to the technical field of nitrogen compressors, and relates to a special emergency nitrogen compressor for liquid chemical storage, which comprises a bottom shell, wherein the top of the inner wall of the bottom shell is fixedly connected with electric hydraulic push rods, the bottom ends of the two electric hydraulic push rods are fixedly connected with the same first movable plate, the bottom of the first movable plate is fixedly connected with two second supporting legs, and the number of the second supporting legs is two. The beneficial effects are that, this emergent special nitrogen compressor of liquid chemical industry storage, through setting up electronic hydraulic push rod and motor, when needs move the ammonia compressor body, drive first fly leaf activity through electronic hydraulic push rod, make gyro wheel and universal wheel and ground contact, make the motor drive the second gear, make the second gear pass through the chain and drive first gear and rotate, make first gear drive the pivot, make the pivot drive the gyro wheel and rotate, more convenient laborsaving when moving nitrogen compressor.
Description
Technical Field
The invention belongs to the technical field of nitrogen compressors, and particularly relates to a special emergency nitrogen compressor for liquid chemical storage.
Background
The nitrogen is colorless and tasteless and can be compressed to high pressure, is insoluble in water and ethanol, has inactive chemical properties, is difficult to react with other substances at normal temperature, accounts for 78.08 percent of the total atmosphere, is the main component of the air, has simple material selection and low cost, and is often used as an anti-oxidation and anti-corrosion agent, an air-tight agent, a blowing and blockage relieving agent, a cooling and temperature reducing agent, an auxiliary environmental agent and the like due to the special chemical properties of the nitrogen. The nitrogen is widely used, for example, in various industries such as food, medicine, livestock raising, refrigeration, electronic industry, metal smelting, chemical industry, machining, chemical fertilizer synthesis, oilfield exploitation and the like, the nitrogen is required to be used, the demand is very large, and the existing nitrogen compressor is inconvenient to move due to heavy weight and is exposed for a long time, so that more dust can fall on the surface, and the nitrogen compressor is inconvenient to clean and maintain.
Disclosure of Invention
To solve the problems set forth in the background art described above. The invention provides a liquid chemical storage emergency special nitrogen compressor, which solves the technical problems of inconvenient movement and inconvenient cleaning and maintenance.
In order to achieve the purpose, the invention provides the following technical scheme: the emergency special nitrogen compressor for the liquid chemical industry storage comprises a bottom shell, wherein the top of the inner wall of the bottom shell is fixedly connected with electric hydraulic push rods, the bottom ends of the two electric hydraulic push rods are fixedly connected with the same first movable plate, the bottom of the first movable plate is fixedly connected with a second supporting leg, the number of the second supporting legs is two, the opposite surfaces of the two second supporting legs are fixedly connected with bearings, the same rotating shaft is arranged inside the two bearings in a penetrating way, the rotating shaft is provided with a first gear and two rollers, the bottom of the first movable plate is fixedly connected with a fixed frame, the fixed frame is fixedly connected with a motor, an output shaft of the motor is provided with a second gear, the first gear is in transmission connection with the second gear through a chain, the bottom of the first movable plate is fixedly connected with a first supporting leg, and the bottom of the first supporting leg is fixedly connected with a universal wheel.
The top of the bottom shell is provided with a nitrogen compressor body and a dustproof shell, the side surface of the dustproof shell is provided with an opening, the opened opposite inner walls are provided with grooves, the inner wall of each groove is fixedly connected with a telescopic assembly, one end of the telescopic assembly is fixedly connected with a second movable plate, the bottom of the second movable plate is fixedly connected with a clamping plate, the side surface of the clamping plate is fixedly connected with a pulling plate, the side surface of the dustproof shell is provided with a rectangular through hole, the pulling plate is movably connected in the rectangular through hole, the inside of the opening is movably connected with a dustproof frame, the two side surfaces of the dustproof frame are provided with clamping grooves, the clamping plates are clamped in the clamping grooves, the top of the dustproof shell is communicated with a fixed cylinder, the opposite inner walls of the fixed cylinder are fixedly connected with a fixed frame, the fixed frame is provided with an exhaust fan, and, the side of dustproof shell has the shell door through hinge swing joint, the surface of shell door is provided with the handle.
As a further scheme of the invention: the two side surfaces of the first movable plate are fixedly connected with sliding blocks, sliding grooves are formed in the opposite surfaces of the bottom shell, and the sliding blocks are movably connected in the sliding grooves.
As a further scheme of the invention: and a heat dissipation plate is arranged on the surface of the nitrogen compressor body.
As a further scheme of the invention: the telescopic assembly comprises a telescopic rod, a spring is sleeved on the surface of the telescopic rod in a movable mode, one end of the telescopic rod and one end of the spring are fixedly connected to the inner wall of the groove, and the other end of the telescopic rod and the other end of the spring are fixedly connected to the second movable plate.
As a further scheme of the invention: the side face of the bottom shell is fixedly connected with a push handle, and a rubber sleeve is arranged on the surface of the push handle.
As a further scheme of the invention: and a control switch is arranged on the side surface of the push handle.
Compared with the prior art, the invention has the beneficial effects that:
1. this emergent special nitrogen compressor of liquid chemical industry storage, through setting up electronic hydraulic push rod and motor, when needs move the ammonia compressor body, drive first fly leaf activity through electronic hydraulic push rod, make gyro wheel and universal wheel and ground contact, make the motor drive the second gear, make the second gear pass through the chain and drive first gear rotation, make first gear drive pivot, make the pivot drive the gyro wheel and rotate, more convenient laborsaving when moving nitrogen compressor.
2. This emergent special nitrogen compressor of liquid chemical industry storage through setting up dust cover, dustproof frame, cardboard, flexible subassembly and arm-tie, through the pulling arm-tie, under the effect of flexible subassembly, makes the second fly leaf drive the cardboard activity, makes the cardboard break away from the draw-in groove, conveniently dismantles dustproof frame, and the convenience is cleared up the dust on the first dust screen, is convenient for maintain.
3. This emergent special nitrogen compressor of liquid chemical industry storage through setting up air exhauster and heating panel, improves the radiating effect of nitrogen compressor body through the heating panel, and the hot-air outgoing that will prevent dust the inside production of shell through the air exhauster makes the air in the dust shell circulate, guarantees the work that ammonia compressor body can be normal.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of a front view cross section of the present invention;
FIG. 2 is an enlarged schematic view of FIG. 1 at A;
FIG. 3 is a schematic perspective view of the dust-proof frame according to the present invention;
FIG. 4 is an enlarged schematic view of the telescoping assembly of the present invention;
FIG. 5 is a front view of the present invention;
in the figure: 1. a bottom case; 2. an electric hydraulic push rod; 3. a first movable plate; 4. a rotating shaft; 5. a first gear; 6. a roller; 7. a fixed mount; 8. a motor; 9. a second gear; 10. a chain; 11. a first support leg; 12. a universal wheel; 13. a slider; 14. a chute; 15. a nitrogen compressor body; 16. a dust-proof shell; 17. a dust-proof frame; 18. a first dust screen; 19. a card slot; 20. a groove; 21. a telescoping assembly; 211. a telescopic rod; 212. a spring; 22. a second movable plate; 23. clamping a plate; 24. pulling a plate; 25. a rectangular through hole; 26. a heat dissipation plate; 27. a fixed cylinder; 28. an exhaust fan; 29. a second dust screen; 30. a push handle; 31. a rubber sleeve; 32. a control switch; 33. a shell door.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides the following technical solutions: the emergency special nitrogen compressor for the liquid chemical industry storage comprises a bottom shell 1, wherein the top of the inner wall of the bottom shell 1 is fixedly connected with electric hydraulic push rods 2, the bottom ends of the two electric hydraulic push rods 2 are fixedly connected with a same first movable plate 3, the bottom of the first movable plate 3 is fixedly connected with two second supporting legs, the opposite surfaces of the two second supporting legs are fixedly connected with bearings, a same rotating shaft 4 is arranged inside the two bearings in a penetrating manner, a first gear 5 and a roller 6 are arranged on the rotating shaft 4, the number of the rollers 6 is two, the bottom of the first movable plate 3 is fixedly connected with a fixed frame 7, a motor 8 is fixedly connected to the fixed frame 7, a second gear 9 is arranged on an output shaft of the motor 8, the first gear 5 is in transmission connection with the second gear 9 through a chain 10, and the bottom of the first movable plate 3 is fixedly connected with a first, bottom fixedly connected with universal wheel 12 of first supporting leg 11, through setting up electronic hydraulic rod 2 and motor 8, when needs move the ammonia compressor body, drive first fly leaf 3 activity through electronic hydraulic rod 2, make gyro wheel 6 and universal wheel 12 and ground contact, make motor 8 drive second gear 9, make second gear 9 drive first gear 5 through chain 10 and rotate, make first gear 5 drive pivot 4, make pivot 4 drive gyro wheel 6 and rotate, more convenient laborsaving when moving the nitrogen compressor.
The top of the bottom shell 1 is provided with a nitrogen compressor body 15 and a dustproof shell 16, the side surface of the dustproof shell 16 is provided with an opening, the opened opposite inner walls are provided with grooves 20, the inner wall of the groove 20 is fixedly connected with a telescopic component 21, one end of the telescopic component 21 is fixedly connected with a second movable plate 22, the bottom of the second movable plate 22 is fixedly connected with a clamping plate 23, the side surface of the clamping plate 23 is fixedly connected with a pulling plate 24, the side surface of the dustproof shell 16 is provided with a rectangular through hole 25, the pulling plate 24 is movably connected in the rectangular through hole 25, the inside of the opening is movably connected with a dustproof frame 17, two side surfaces of the dustproof frame 17 are provided with clamping grooves 19, the clamping plate 23 is clamped in the clamping grooves 19, the second movable plate 22 drives the clamping plate 23 to move under the action of the telescopic component 21 by arranging the dustproof shell 16, the dustproof frame 17, the clamping plate 23, the, make cardboard 23 break away from draw-in groove 19, the convenience is dismantled dustproof frame 17, the convenience is cleared up the dust on first dust screen 18, be convenient for maintain, the top intercommunication of dustproofing shell 16 has a solid fixed cylinder 27, fixedly connected with mount 7 on solid fixed cylinder 27's the relative inner wall, and be provided with air exhauster 28 on the mount 7, solid fixed cylinder 27's top is provided with second dust screen 29, there is shell door 33 side of dustproofing shell 16 through hinge swing joint, shell door 33's surface is provided with the handle.
Specifically, the equal fixedly connected with slider 13 in two sides of first fly leaf 3, spout 14 has all been seted up on the opposite face of drain pan 1, slider 13 swing joint is in spout 14, play spacing effect to first fly leaf 3, nitrogen compressor body 15's surface is provided with heating panel 26, through setting up air exhauster 28 and heating panel 26, improve nitrogen compressor body 15's radiating effect through heating panel 26, discharge the inside hot-air that produces of dust cover 16 through air exhauster 28, make the air in the dust cover 16 circulate, guarantee the work that ammonia compressor body can be normal.
Specifically, flexible subassembly 21 includes telescopic link 211, the surface activity of telescopic link 211 has cup jointed spring 212, the one end fixed connection of telescopic link 211 and spring 212 is on the inner wall of recess 20, the other end fixed connection of telescopic link 211 and spring 212 is on second fly leaf 22, play the effect of flexible elasticity, when dustproof frame 17 swing joint is in the opening, through loosening arm-tie 24, under the flexible elasticity effect of flexible subassembly 21, make cardboard 23 joint in draw-in groove 19, be convenient for fix dustproof frame 17, the side fixedly connected with of drain pan 1 pushes away 30, the surface that pushes away 30 is provided with rubber sleeve 31, convenience more when removing nitrogen compressor body 15, it is provided with control switch 32 to push away the side of 30, be convenient for carry out regulation and control to the device.
The working principle of the invention is as follows:
s1, when the ammonia gas compressor body needs to be moved, the electric hydraulic push rod 2 drives the first movable plate 3 to move, the roller 6 and the universal wheel 12 are in contact with the ground, the motor 8 drives the second gear 9, the second gear 9 drives the first gear 5 to rotate through the chain 10, the first gear 5 drives the rotating shaft 4, the rotating shaft 4 drives the roller 6 to rotate, the ammonia gas compressor body is moved to a used position through power assistance, the electric push rod drives the first movable plate 3 to move, the roller 6 is retracted into the bottom shell 1, the bottom shell 1 is in contact with the ground, and the nitrogen gas compressor body 15 is more stable when being used;
s2, when starting the nitrogen compressor body 15, start the air exhauster 28 simultaneously, discharge the inside hot air that produces of dirt proof housing 16 through the air exhauster 28, make the air in the dirt proof housing 16 circulate, when the long life needs of dust screen clear up, through pulling arm-tie 24, under the effect of extensible component 21, make second fly leaf 22 drive cardboard 23 activity, make cardboard 23 break away from draw-in groove 19, dismantle dustproof frame 17, clear up first dust screen 18, after the clearance is accomplished, make dustproof frame 17 swing joint in the opening, through loosening arm-tie 24, under the flexible elasticity effect of extensible component 21, make cardboard 23 joint in draw-in groove 19, fix dustproof frame 17.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (6)
1. Emergent special nitrogen compressor of liquid chemical industry storage, including drain pan (1), its characterized in that: the top of the inner wall of the bottom shell (1) is fixedly connected with electric hydraulic push rods (2), the bottom ends of the two electric hydraulic push rods (2) are fixedly connected with the same first movable plate (3), the bottom of the first movable plate (3) is fixedly connected with second supporting legs, the number of the second supporting legs is two, bearings are fixedly connected to opposite surfaces of the two second supporting legs, the same rotating shaft (4) penetrates through the two bearings, a first gear (5) and two rollers (6) are arranged on the rotating shaft (4), the number of the rollers (6) is two, a fixing frame (7) is fixedly connected to the bottom of the first movable plate (3), a motor (8) is fixedly connected to the fixing frame (7), a second gear (9) is arranged on an output shaft of the motor (8), and the first gear (5) is in transmission connection with the second gear (9) through a chain (10), the bottom of the first movable plate (3) is fixedly connected with a first supporting leg (11), and the bottom of the first supporting leg (11) is fixedly connected with a universal wheel (12);
the nitrogen compressor is characterized in that a nitrogen compressor body (15) and a dustproof shell (16) are arranged at the top of the bottom shell (1), an opening is formed in the side surface of the dustproof shell (16), grooves (20) are formed in the opposite inner walls of the openings, telescopic components (21) are fixedly connected to the inner walls of the grooves (20), a second movable plate (22) is fixedly connected to one end of each telescopic component (21), a clamping plate (23) is fixedly connected to the bottom of each second movable plate (22), a pulling plate (24) is fixedly connected to the side surface of each clamping plate (23), rectangular through holes (25) are formed in the side surface of the dustproof shell (16), each pulling plate (24) is movably connected to each rectangular through hole (25), a dustproof frame (17) is movably connected to the inside of each opening, clamping grooves (19) are formed in two side surfaces of each dustproof frame (17), and the clamping plates (23) are clamped in the clamping, the top intercommunication of dustcoat (16) has a fixed section of thick bamboo (27), fixedly connected with mount (7) on the relative inner wall of a fixed section of thick bamboo (27), and be provided with air exhauster (28) on mount (7), the top of a fixed section of thick bamboo (27) is provided with second dust screen (29), there is shell door (33) side of dustcoat (16) through hinge swing joint, the surface of shell door (33) is provided with the handle.
2. The nitrogen compressor special for the emergency of the liquid chemical industry storage as claimed in claim 1, wherein: the two side faces of the first movable plate (3) are fixedly connected with sliding blocks (13), sliding grooves (14) are formed in opposite faces of the bottom shell (1), and the sliding blocks (13) are movably connected into the sliding grooves (14).
3. The nitrogen compressor special for the emergency of the liquid chemical industry storage as claimed in claim 1, wherein: the surface of the nitrogen compressor body (15) is provided with a heat dissipation plate (26).
4. The nitrogen compressor special for the emergency of the liquid chemical industry storage as claimed in claim 1, wherein: the telescopic assembly (21) comprises a telescopic rod (211), a spring (212) is sleeved on the surface of the telescopic rod (211) in a movable mode, one ends of the telescopic rod (211) and the spring (212) are fixedly connected to the inner wall of the groove (20), and the other ends of the telescopic rod (211) and the spring (212) are fixedly connected to the second movable plate (22).
5. The nitrogen compressor special for the emergency of the liquid chemical industry storage as claimed in claim 1, wherein: the side surface of the bottom shell (1) is fixedly connected with a push handle (30), and the surface of the push handle (30) is provided with a rubber sleeve (31).
6. The nitrogen compressor special for the emergency of the liquid chemical industry storage is as claimed in claim 5, and is characterized in that: the side surface of the push handle (30) is provided with a control switch (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011554521.3A CN112628120A (en) | 2020-12-25 | 2020-12-25 | Special nitrogen compressor for liquid chemical storage emergency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011554521.3A CN112628120A (en) | 2020-12-25 | 2020-12-25 | Special nitrogen compressor for liquid chemical storage emergency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112628120A true CN112628120A (en) | 2021-04-09 |
Family
ID=75324633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011554521.3A Pending CN112628120A (en) | 2020-12-25 | 2020-12-25 | Special nitrogen compressor for liquid chemical storage emergency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112628120A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253611A (en) * | 2017-12-24 | 2018-07-06 | 吕慧峰 | A kind of clarifier support device easy to remove |
| CN208040664U (en) * | 2018-01-12 | 2018-11-02 | 盐城市国力空压机制造厂 | A kind of radiator for air compressor |
| CN208236606U (en) * | 2018-04-16 | 2018-12-14 | 溆浦中民燃气有限公司 | A kind of reciprocating-piston air compressor without lubricant |
| CN210460983U (en) * | 2019-06-19 | 2020-05-05 | 庞成伟 | Air compressor dust keeper is used in active carbon production |
| CN211021574U (en) * | 2019-09-27 | 2020-07-17 | 怀化职业技术学院 | Book placing cabinet for professorship education |
| CN211083299U (en) * | 2019-12-06 | 2020-07-24 | 苏州与光与时电子商务有限公司 | Mobile data acquisition equipment convenient to move |
-
2020
- 2020-12-25 CN CN202011554521.3A patent/CN112628120A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253611A (en) * | 2017-12-24 | 2018-07-06 | 吕慧峰 | A kind of clarifier support device easy to remove |
| CN208040664U (en) * | 2018-01-12 | 2018-11-02 | 盐城市国力空压机制造厂 | A kind of radiator for air compressor |
| CN208236606U (en) * | 2018-04-16 | 2018-12-14 | 溆浦中民燃气有限公司 | A kind of reciprocating-piston air compressor without lubricant |
| CN210460983U (en) * | 2019-06-19 | 2020-05-05 | 庞成伟 | Air compressor dust keeper is used in active carbon production |
| CN211021574U (en) * | 2019-09-27 | 2020-07-17 | 怀化职业技术学院 | Book placing cabinet for professorship education |
| CN211083299U (en) * | 2019-12-06 | 2020-07-24 | 苏州与光与时电子商务有限公司 | Mobile data acquisition equipment convenient to move |
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