CN113898556B - Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine - Google Patents
Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine Download PDFInfo
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- CN113898556B CN113898556B CN202111214127.XA CN202111214127A CN113898556B CN 113898556 B CN113898556 B CN 113898556B CN 202111214127 A CN202111214127 A CN 202111214127A CN 113898556 B CN113898556 B CN 113898556B
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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
- 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
- F04B39/0027—Pulsation and noise damping means
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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
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
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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
- F04B39/16—Filtration; Moisture separation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to the related field of permanent magnet variable frequency air compressors, in particular to an energy-saving and environment-friendly permanent magnet variable frequency air compressor which comprises a bottom plate, a mounting seat and a device shell, wherein a damping device is arranged between the bottom plate and the mounting seat, a first telescopic rod is arranged in the damping device, a first spring is sleeved between the top of the bottom plate and the bottom of a connecting block at the periphery of the first telescopic rod, a second spring is connected between the top of a fixed block and a mounting frame, and a third spring is sleeved between the top of the mounting plate and the bottom of the connecting plate at the periphery of the second telescopic rod, so that transverse and vertical vibrations generated when the whole device operates can be effectively absorbed through the deformation of the first spring, the second spring and the third spring, and the normal operation of the device is protected; through setting up splint and radiator fan, and splint and radiator fan position correspond with permanent-magnet machine, and splint are used for centre gripping permanent-magnet machine, are convenient for effectively to permanent-magnet machine heat dissipation, guarantee its steady operation.
Description
Technical Field
The invention relates to the field of permanent magnet variable frequency air compressors, in particular to an energy-saving and environment-friendly permanent magnet variable frequency air compressor.
Background
The air compressor is a machine used for compressing air to improve air pressure or conveying air, and along with the high-speed development of equipment, the air compressor is applied to multiple industries and almost extends to various fields such as industry and agriculture, national defense, science and technology, civilian use and the like. Because the variable frequency air compressor has the advantages of stable air pressure, more energy conservation, no impact in starting, low noise, low requirement on the capacity of the air storage tank and the like, the air compressor driven by the power frequency is gradually replaced by the variable frequency air compressor. And compared with the common variable-frequency air compressor, the permanent-magnet variable-frequency air compressor adopts the permanent-magnet motor, so that the energy and the power are saved, and the permanent-magnet motor can automatically adjust the frequency to change the motor power according to the change of the air quantity of a user end and well match the output power of the motor, so that the working efficiency of the variable-frequency air compressor is still kept at a high level under the conditions of light load or overload, the mechanical loss is small, and the service life is longer, so that the variable-frequency permanent-magnet air compressor is popular in the market.
But the phenomenon of demagnetization takes place under the state of long-time high temperature for the current permanent magnet, in case permanent magnet magnetism changes will lead to the power decline of motor, and then influence the air compressor machine to gaseous compression, this forms a circulation because the insufficient air pressure transducer can increase the function of motor, power increase leads to the temperature in the motor to be higher, thereby the extravagant problem of energy consumption has been formed, and permanent magnetism frequency conversion air compressor machine is in the in-process that uses, because compressor and the permanent magnet motor work in the organism produce vibrations easily, thereby drive the organism vibrations, lead to the poor stability of whole air compressor machine.
Disclosure of Invention
The invention aims to provide an energy-saving environment-friendly permanent magnet variable frequency air compressor to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine, includes bottom plate, mount pad and device shell, its characterized in that: the top of the bottom plate is connected with a mounting seat through a damping device, a device shell is arranged at the top of the mounting seat, a supporting seat is arranged at the bottom of an inner cavity of the device shell, a frequency converter and a permanent magnet motor are respectively arranged on two sides of the top of the supporting seat, and the top of the permanent magnet motor is connected with an air pipe;
the damping device comprises a first telescopic rod, connecting columns, baffles and connecting blocks, wherein the first telescopic rod is uniformly arranged in the middle of the top of the bottom plate, the connecting block is connected to the top end of the first telescopic rod, a plurality of connecting columns are uniformly arranged in the middle of the bottom of the mounting seat, mounting frames are arranged on two sides of each connecting column at the bottom of the mounting seat, the baffles are connected to two sides of the top of the bottom plate, a fixed block is arranged on the top of the bottom plate on the side surface of each baffle, and a second spring is connected between the top of each fixed block and the corresponding mounting frame;
the supporting seat comprises a fixed plate, a connecting plate and a mounting plate, the mounting plate is fixed to the bottom of the inner cavity of the device shell through bolts, a plurality of second telescopic rods are uniformly installed on two sides of the top of the mounting plate, the top of each second telescopic rod is provided with the connecting plate, a cooling fan is installed at the bottom of the connecting plate, the top of the connecting plate is connected with the fixed plate through a buffer spring, two moving grooves which are located on the same straight line are formed in the surface of the top of the fixed plate, threaded rods are connected to the moving grooves through bearings, and the tops of the threaded rods are connected with clamping plates.
Preferably, the sliding sleeve is installed at the connecting block top, the connecting column bottom runs through the sliding sleeve and is located inside the connecting block, and the connecting column bottom is connected with the limiting plate.
Preferably, soundproof cotton is filled in the device shell, so that noise generated during operation of the whole device is effectively reduced.
Preferably, the top end of the baffle is provided with a buffer block, and a gap is reserved between the top end of the buffer block and the bottom of the mounting seat.
Preferably, the first spring is sleeved between the top of the bottom plate and the bottom of the connecting block on the periphery of the first telescopic rod, and the third spring is sleeved between the top of the mounting plate and the bottom of the connecting block on the periphery of the second telescopic rod, so that the vibration generated when the whole device operates is effectively absorbed through the expansion and contraction of the first telescopic rod and the second telescopic rod, and the stable operation is ensured.
Preferably, install the kit in the middle of the mounting panel top, the inside packing of kit has dampproofing reagent, and the kit is under radiator fan, can effectively guarantee the drying of whole device shell internal environment, prevents that the device from weing the damage.
Preferably, through holes are formed in the corresponding positions of the surface of the fixing plate and the surface of the connecting plate on the radiating fan, and filter screens are arranged on the surfaces of the through holes.
Preferably, the periphery of the supporting seat is wrapped with a dust screen.
Preferably, threaded rod one end is provided with adjust knob in the fixed plate side, splint pass through thread bush and threaded rod looks threaded connection, splint and radiator fan position correspond with permanent-magnet machine, and splint are used for centre gripping permanent-magnet machine.
Compared with the prior art, the invention has the beneficial effects that: the sound insulation cotton is filled in the device shell, so that the noise generated when the whole device runs is effectively reduced; by arranging the damping device between the bottom plate and the mounting seat, arranging the first telescopic rod in the damping device, sleeving the first spring between the top of the bottom plate and the bottom of the connecting block on the periphery of the first telescopic rod, connecting the second spring between the top of the fixed block and the mounting frame, and sleeving the third spring between the top of the mounting plate and the bottom of the connecting plate on the periphery of the second telescopic rod, the transverse and vertical vibrations generated during the operation of the whole device can be effectively absorbed through the deformation of the first spring, the second spring and the third spring, so that the normal operation of the device is protected; through setting up splint and radiator fan, and splint and radiator fan position correspond with permanent-magnet machine, and splint are used for centre gripping permanent-magnet machine, are convenient for effectively to permanent-magnet machine heat dissipation, guarantee its steady operation.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the shock absorbing device of the present invention;
FIG. 4 is a schematic view of a supporting seat structure of the present invention;
fig. 5 is a schematic top view of a fixing plate according to the present invention.
In the figure: 1. a base plate; 2. a mounting seat; 3. a device housing; 4. a damping device; 5. a supporting base; 6. a fixing plate; 7. a permanent magnet motor; 8. a frequency converter; 9. an air duct; 10. a first telescopic rod; 11. a first spring; 12. connecting columns; 13. a mounting frame; 14. a fixed block; 15. connecting blocks; 16. a limiting plate; 17. a sliding sleeve; 18. a buffer block; 19. a baffle plate; 20. a second spring; 21. a through hole; 22. a connecting plate; 23. mounting a plate; 24. a second telescopic rod; 25. a third spring; 26. a kit; 27. a heat-dissipating fan; 28. a splint; 29. a threaded rod; 30. a buffer spring; 31. a threaded sleeve; 32. a moving groove; 33. a filter screen; 34. a dust screen; 35. and adjusting a knob.
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.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Referring to fig. 1-5, the present invention provides a technical solution: an energy-saving environment-friendly permanent magnet variable frequency air compressor comprises a bottom plate 1, a mounting seat 2 and a device shell 3, wherein the top of the bottom plate 1 is connected with the mounting seat 2 through a damping device 4, the device shell 3 is arranged at the top of the mounting seat 2, a supporting seat 5 is arranged at the bottom of an inner cavity of the device shell 3, a frequency converter 8 and a permanent magnet motor 7 are respectively arranged on two sides of the top of the supporting seat 5, and the top of the permanent magnet motor 7 is connected with an air pipe 9;
the damping device 4 comprises a first telescopic rod 10, connecting columns 12, baffles 19 and connecting blocks 15, wherein the first telescopic rod 10 is uniformly arranged in the middle of the top of the bottom plate 1, the connecting blocks 15 are connected to the top end of the first telescopic rod 10, the connecting columns 12 are uniformly arranged in the middle of the bottom of the mounting seat 2, mounting frames 13 are arranged at the bottom of the mounting seat 2 on two sides of each connecting column 12, the baffles 19 are connected to two sides of the top of the bottom plate 1, fixing blocks 14 are arranged on the top of the bottom plate 1 on the side surfaces of the baffles 19, and second springs 20 are connected between the tops of the fixing blocks 14 and the mounting frames 13;
supporting seat 5 includes fixed plate 6, connecting plate 22 and mounting panel 23, mounting panel 23 passes through the bolt fastening in 3 inner chambers bottom of device shell, a plurality of second telescopic links 24 are evenly installed to mounting panel 23 top both sides, 24 tops of second telescopic links are provided with connecting plate 22, radiator fan 27 is installed to connecting plate 22 bottom, connecting plate 22 top is connected with fixed plate 6 through buffer spring 30, two shifting chutes 32 that are in same straight line are seted up to 6 top surfaces of fixed plate, be connected with threaded rod 29 through the bearing in the shifting chute 32, threaded rod 29 top is connected with splint 28.
Further, a sliding sleeve 17 is installed at the top of the connecting block 15, the bottom end of the connecting column 12 penetrates through the sliding sleeve 17 and is located inside the connecting block 15, and the bottom end of the connecting column 12 is connected with a limiting plate 16.
Furthermore, soundproof cotton is filled in the device shell 3, so that noise generated during the operation of the whole device can be effectively reduced.
Furthermore, the top end of the baffle plate 19 is provided with a buffer block 18, and a gap is reserved between the top end of the buffer block 18 and the bottom of the mounting base 2.
Further, first spring 11 has been cup jointed in the periphery of first telescopic link 10 between 1 top of bottom plate and connecting block 15 bottom, and third spring 25 has been cup jointed in the periphery of second telescopic link 24 between mounting panel 23 top and connecting plate 22 bottom, is convenient for through the flexible of first telescopic link 10 and second telescopic link 24, and the vibrations when the whole device of active absorption moves guarantee the steady operation.
Further, install kit 26 in the middle of the mounting panel 23 top, the inside packing of kit 26 has dampproofing reagent, and kit 26 is located radiator fan 27 under, can effectively guarantee the drying of whole device shell internal environment, prevents that the device from weing the damage.
Furthermore, through holes 21 are formed on the surfaces of the fixing plate 6 and the connecting plate 22 at positions corresponding to the heat dissipation fans 27, and filter screens 33 are installed on the surfaces of the through holes 21.
Furthermore, the periphery of the supporting seat 5 is wrapped with a dust screen 34.
Furthermore, an adjusting knob 35 is arranged at one end of the threaded rod 29 on the side surface of the fixing plate 6, the clamping plate 28 is in threaded connection with the threaded rod 29 through the threaded sleeve 31, the positions of the clamping plate 28 and the heat dissipation fan 27 correspond to the position of the permanent magnet motor 7, and the clamping plate 28 is used for clamping the permanent magnet motor 7.
The sound insulation cotton is filled in the device shell 3, so that the noise generated when the whole device runs is effectively reduced; by arranging the damping device 4 between the bottom plate 1 and the mounting seat 2, arranging the first telescopic rod 10 in the damping device 4, sleeving the first spring 11 on the periphery of the first telescopic rod 10 between the top of the bottom plate 1 and the bottom of the connecting block 15, connecting the second spring 20 between the top of the fixed block 14 and the mounting frame 13, and sleeving the third spring 25 on the periphery of the second telescopic rod 24 between the top of the mounting plate 23 and the bottom of the connecting plate 22, the transverse and vertical vibrations generated during the operation of the whole device can be effectively absorbed through the deformation of the first spring 11, the second spring 20 and the third spring 25, so that the normal operation of the device is protected; through setting up splint 28 and radiator fan 27, and splint 28 and radiator fan 27 position are corresponding with permanent-magnet machine 7, and splint 28 is used for centre gripping permanent-magnet machine 7, is convenient for effectively dispel the heat to permanent-magnet machine 7, guarantees its steady operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides an energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine, includes bottom plate (1), mount pad (2) and device shell (3), its characterized in that: the top of the bottom plate (1) is connected with a mounting seat (2) through a damping device (4), a device shell (3) is arranged at the top of the mounting seat (2), a supporting seat (5) is installed at the bottom of an inner cavity of the device shell (3), a frequency converter (8) and a permanent magnet motor (7) are installed on two sides of the top of the supporting seat (5) respectively, and the top of the permanent magnet motor (7) is connected with an air pipe (9);
the damping device (4) comprises a first telescopic rod (10), connecting columns (12), baffles (19) and connecting blocks (15), wherein the first telescopic rod (10) is uniformly arranged in the middle of the top of the bottom plate (1), the connecting block (15) is connected to the top end of the first telescopic rod (10), a plurality of connecting columns (12) are uniformly arranged in the middle of the bottom of the mounting seat (2), mounting frames (13) are arranged on two sides of each connecting column (12) at the bottom of the mounting seat (2), the baffles (19) are connected to two sides of the top of the bottom plate (1), fixed blocks (14) are arranged on the side faces of the baffles (19) at the top of the bottom plate (1), and second springs (20) are connected between the tops of the fixed blocks (14) and the mounting frames (13);
supporting seat (5) are including fixed plate (6), connecting plate (22) and mounting panel (23), mounting panel (23) are fixed in device shell (3) inner chamber bottom through the bolt, a plurality of second telescopic links (24) are evenly installed to mounting panel (23) top both sides, second telescopic link (24) top is provided with connecting plate (22), radiator fan (27) are installed to connecting plate (22) bottom, connecting plate (22) top is connected with fixed plate (6) through buffer spring (30), two shifting chutes (32) that are in same straight line are seted up on fixed plate (6) top surface, be connected with threaded rod (29) through the bearing in shifting chute (32), threaded rod (29) top is connected with splint (28).
2. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: sliding sleeve (17) are installed at connecting block (15) top, spliced pole (12) bottom is run through sliding sleeve (17) and is located inside connecting block (15), and spliced pole (12) bottom is connected with limiting plate (16).
3. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: soundproof cotton is filled in the device shell (3).
4. The energy-saving environment-friendly permanent magnet variable frequency air compressor as claimed in claim 1, wherein: a buffer block (18) is arranged at the top end of the baffle (19), and a gap is reserved between the top end of the buffer block (18) and the bottom of the mounting seat (2).
5. The energy-saving environment-friendly permanent magnet variable frequency air compressor as claimed in claim 1, wherein: first spring (11) has been cup jointed between bottom plate (1) top and connecting block (15) bottom in first telescopic link (10) periphery, third spring (25) has been cup jointed between mounting panel (23) top and connecting plate (22) bottom in second telescopic link (24) periphery.
6. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: install kit (26) in the middle of mounting panel (23) top, kit (26) inside is filled with dampproofing reagent, and kit (26) are under radiator fan (27).
7. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: through holes (21) are formed in the corresponding positions of the surface of the fixing plate (6) and the surface of the connecting plate (22) on the heat dissipation fan (27), and filter screens (33) are arranged on the surfaces of the through holes (21).
8. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: the periphery of the supporting seat (5) is wrapped with a dust screen (34).
9. The energy-saving environment-friendly permanent magnet variable frequency air compressor of claim 1, characterized in that: threaded rod (29) one end is provided with adjust knob (35) in fixed plate (6) side, splint (28) are through thread bush (31) and threaded rod (29) looks threaded connection, splint (28) and radiator fan (27) position are corresponding with permanent-magnet machine (7), and splint (28) are used for centre gripping permanent-magnet machine (7) both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214127.XA CN113898556B (en) | 2021-10-19 | 2021-10-19 | Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214127.XA CN113898556B (en) | 2021-10-19 | 2021-10-19 | Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine |
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| CN113898556A CN113898556A (en) | 2022-01-07 |
| CN113898556B true CN113898556B (en) | 2023-04-14 |
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| CN202111214127.XA Active CN113898556B (en) | 2021-10-19 | 2021-10-19 | Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207848761U (en) * | 2018-01-24 | 2018-09-11 | 广东百精自动化设备有限公司 | A kind of screw air compressing machine base |
| CN208073710U (en) * | 2018-02-01 | 2018-11-09 | 福建斯特机电科技股份有限公司 | A kind of air compressor machine damping device |
| CN208651974U (en) * | 2018-07-31 | 2019-03-26 | 天津润亨动力科技股份有限公司 | A kind of generator set base for damping |
| CN209562308U (en) * | 2019-03-28 | 2019-10-29 | 湖南大学 | A kind of temperature control protective device for magneto |
| CN211456894U (en) * | 2020-01-02 | 2020-09-08 | 天津市礴金电机有限公司 | Double-shaft motor base based on multiple shockproof structure |
| CN213116703U (en) * | 2020-07-09 | 2021-05-04 | 泉州市华德机电设备有限公司 | Frequency conversion screw air compressor |
| CN212909193U (en) * | 2020-07-22 | 2021-04-06 | 徐州统一电机有限公司 | Modular three-phase alternating-current permanent magnet variable frequency speed regulation motor |
| CN212898830U (en) * | 2020-08-25 | 2021-04-06 | 上海平氏机电科技有限公司 | Permanent magnetism frequency conversion air compressor machine economizer |
| CN213628003U (en) * | 2020-11-09 | 2021-07-06 | 黑龙江省万里润达生物科技有限公司 | Energy-concerving and environment-protective permanent magnetism frequency conversion air compressor machine |
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