CN113864194A - Leading air preprocessing device of air compressor machine - Google Patents
Leading air preprocessing device of air compressor machine Download PDFInfo
- Publication number
- CN113864194A CN113864194A CN202111298127.2A CN202111298127A CN113864194A CN 113864194 A CN113864194 A CN 113864194A CN 202111298127 A CN202111298127 A CN 202111298127A CN 113864194 A CN113864194 A CN 113864194A
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- Prior art keywords
- air
- air compressor
- chamber
- drying chamber
- sponge
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- 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
Links
- 238000007781 pre-processing Methods 0.000 title claims description 13
- 238000001035 drying Methods 0.000 claims abstract description 35
- 238000005057 refrigeration Methods 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 34
- 238000002203 pretreatment Methods 0.000 claims description 9
- 229920006395 saturated elastomer Polymers 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 description 8
- 239000012535 impurity Substances 0.000 description 6
- 238000007791 dehumidification Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003584 silencer Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
Abstract
The invention discloses a front air pretreatment device of an air compressor, and relates to the field of air compressors. The invention comprises an air compressor and a device main body, the interior of the device main body is divided into a pretreatment chamber and a drying chamber, a fixed rod is arranged above the interior of the drying chamber, the top of the fixed rod is provided with an induced draft fan, one side of the bottom of the fixed rod is provided with a motor, the output end of the motor is connected with a central shaft, when the sponge in the pretreatment chamber is adsorbed and saturated, the worker can turn on the motor to drive the central shaft to rotate, thereby leading the bracket to rotate, leading the other sponge to rotate and enter the pretreatment chamber, leading the outer sides of the brackets to be provided with the sealing pads which can keep the sealing state of the pretreatment chamber, after the sponge with saturated adsorption enters the drying chamber, the worker opens the induced draft fan to attract the hot air of the refrigerating sheet, thereby dry moist sponge, when the steam of refrigeration piece is not enough, can open the hot plate, provide the heat source to reach the purpose of the interior moisture of automatic removal sponge.
Description
Technical Field
The invention relates to the field of pre-air pretreatment of air compressors, in particular to a pre-air pretreatment device of an air compressor.
Background
The air compressor is a device used for compressing gas, the air compressor is similar to a water pump in structure, most of the air compressors are of a reciprocating piston type, rotating blades or rotating screws can be divided into a plurality of types according to the working principle, the lubricating mode, the performance and the like, the noise of the air compressor is mainly controlled by three aspects of a silencer, a silencing gallery and a sound insulation technology, when the air compressor is in an environment with high humidity for a long time, lubricating oil of the air compressor with the oil screw rod contains water during operation, the lubricating oil is frequently replaced, and the lubricating oil needs to be replaced once every half year; for an oil-free screw air compressor, the temperature rise of the first-stage rotor and the second-stage rotor in the compression process is high, the condensed water is large, the damage to the rotor coating is large, the service life of the rotor is shortened to 5 years, and the rotor needs to be replaced.
Chinese patent according to patent No. CN201711180976.1 discloses a leading air preprocessing device of air compressor machine, it filters through installation surface cooler and air filter, nevertheless is in back under the humid environment for a long time when the air compressor machine, and its inside dehumidification subassembly reaches and also needs to be changed after the saturation, and it is more frequent to change, influences the air compressor machine normal use, can't in time discharge the moisture of dehumidification subassembly.
Disclosure of Invention
Based on this, the invention aims to provide a front air pretreatment device of an air compressor, so as to solve the technical problem that moisture in a dehumidification assembly cannot be discharged in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a leading air preprocessing device of air compressor machine, includes air compressor machine and device main part, the inside of device main part divide into preprocessing chamber and drying chamber, the dead lever is installed to the inside top of drying chamber, the draught fan is installed at the top of dead lever, the motor is installed to bottom one side of dead lever, the output of motor is connected with the center pin, the support is installed in the outside of center pin, install the sponge on the support, the refrigeration piece is installed to the intermediate position of preprocessing chamber and drying chamber, the grid tray is installed to the inside below of preprocessing chamber and drying chamber.
Through adopting above-mentioned technical scheme, after the sponge that is located the inside preliminary treatment room adsorbs the moisture saturation, the staff can open the motor, the motor drive center pin is rotatory, thereby make the support rotatory, get into the preliminary treatment room with another sponge rotation, sealed pad is all installed in the outside of support, can keep the encapsulated situation of preliminary treatment room, and adsorb the sponge of saturation and get into behind the drying chamber, the staff opens the draught fan, can attract the steam of refrigeration piece, thereby dry moist sponge, when the steam of refrigeration piece is not enough, can open the hot plate, provide the heat source.
Further, the inside below of preliminary treatment room is installed the active carbon board, one side of active carbon board is connected with the handle, the active carbon board is connected with preliminary treatment room through the mode of pegging graft, the inboard of handle is provided with sealed the pad.
Through adopting above-mentioned technical scheme, the active carbon board is with the shape adaptation of preliminary treatment room, and after the active carbon board adsorbed impurity saturation, the staff can take the active carbon board out through the handle and change, convenient operation.
Further, the scaffold is positioned in the drying chamber and penetrates through the interior of the pretreatment chamber.
Furthermore, a sealing gasket is pasted on the support, and the sponge is divided into four equal parts in the support.
Through adopting above-mentioned technical scheme, sealed the leakproofness that can improve between support and the pretreatment room of filling up, the sponge of quartering can carry out a lot of absorption to the moisture in the pretreatment room, need not the manual work and handles, and is simple and convenient, convenient operation.
Furthermore, the two ends of the refrigeration piece are respectively provided with a refrigeration piece hot end and a refrigeration piece cold end, the refrigeration piece hot end is positioned in the drying chamber, and the refrigeration piece cold end is positioned in the pretreatment chamber.
Through adopting above-mentioned technical scheme, because the load that can increase the air compressor machine after the air compressor machine inhales the hot-air can open the refrigeration piece after summer inhales the hot-air, cools off the hot-air, can improve the work efficiency of air compressor machine.
Further, the diameter of preliminary treatment room is the half of drying chamber diameter, the hot plate is installed to the inside below of drying chamber, the exhaust pipe is installed at the top of drying chamber.
Further, an air inlet pipe penetrates through one side of the device main body, the air inlet pipe is communicated with the pretreatment chamber, and the bottom end of the pretreatment chamber is connected with an air inlet of an air compressor.
Through adopting above-mentioned technical scheme, after the air compressor machine was opened, the air got into by the intake pipe to through the preliminary treatment of pre-processing room, get into the air compressor machine through the air inlet of air compressor machine and compress.
In summary, the invention mainly has the following beneficial effects:
1. the invention arranges the drying chamber, installs the bracket and the sponge in the drying chamber, and drives by the motor, when using the air compressor, the air compressor is opened, the gas enters the pretreatment chamber through the gas inlet pipe, the gas firstly passes through the sponge in the pretreatment chamber, the sponge can absorb most impurities and moisture in the air, then passes through the cold end of the refrigerating sheet, the refrigerating sheet can be opened after the hot air is sucked in summer, the hot air is cooled to prevent the air compressor from sucking hot air to generate load, then the air passes through the active carbon plate, the active carbon plate can continuously absorb fine impurities therein, the air is filtered, finally the air entering the air compressor is kept at low temperature and pure for the air compressor to compress, when the sponge in the pretreatment chamber is adsorbed and saturated, the worker can open the motor, the motor drives the central shaft to rotate, thereby the bracket rotates, get into the pre-treatment chamber with the rotation of another sponge, sealed pad is all installed in the outside of support, can keep the encapsulated situation of pre-treatment chamber, and adsorb saturation's sponge and get into the drying chamber after, the draught fan is opened to the staff, can attract the steam of refrigeration piece, thereby dry the sponge of humidity, when the steam of refrigeration piece is not enough, can open the hot plate, provide the heat source, thereby reach the purpose of the interior moisture of automatic getting rid of sponge, and the draught fan can pass through the exhaust pipe with the moisture and discharge, make things convenient for the staff to operate, the maintenance, change cycle length, be favorable to the protection to the air compressor machine, improve its life.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the main body of the device of the present invention;
FIG. 3 is a schematic top view of the stand of the present invention;
FIG. 4 is a schematic top cross-sectional view of the device body of the present invention;
fig. 5 is a partial structural view of the stent of the present invention.
In the figure: 1. an air compressor; 2. a device main body; 3. an air inlet pipe; 4. a pretreatment chamber; 5. a drying chamber; 6. an induced draft fan; 7. fixing the rod; 8. a motor; 9. a support; 901. a sponge; 902. a central shaft; 903. a gasket; 10. heating plates; 11. a grid plate; 12. an activated carbon plate; 1201. a handle; 13. a refrigeration plate; 1301. the hot end of the refrigerating sheet; 1302. cold ends of the refrigerating fins; 14. an exhaust pipe.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A pre-air treatment device of an air compressor comprises an air compressor 1 and a device main body 2, wherein the interior of the device main body 2 is divided into a pretreatment chamber 4 and a drying chamber 5, a fixing rod 7 is arranged above the interior of the drying chamber 5, an induced draft fan 6 is arranged at the top of the fixing rod 7, a motor 8 is arranged on one side of the bottom of the fixing rod 7, the output end of the motor 8 is connected with a central shaft 902, a bracket 9 is arranged on the outer side of the central shaft 902, sponge 901 is arranged on the bracket 9, a refrigerating sheet 13 is arranged at the middle position of the pretreatment chamber 4 and the drying chamber 5, a grid plate 11 is arranged below the interiors of the pretreatment chamber 4 and the drying chamber 5, when the sponge positioned in the pretreatment chamber 4 is saturated by moisture adsorbed, a worker can open the motor 8, the motor 8 drives the central shaft 902 to rotate, so that the bracket 9 rotates, and another sponge 901 rotates to enter the pretreatment chamber 4, sealed pad 903 is all installed in the outside of support 9, can keep the encapsulated situation of pre-treatment chamber 4, and adsorbs saturated sponge 9 and get into drying chamber 5 after, the staff opens draught fan 6, can attract the steam of refrigeration piece 13 to dry moist sponge 901, when the steam of refrigeration piece 13 is not enough, can open hot plate 10, provide the heat source.
Referring to fig. 1-5, an activated carbon plate 12 is installed below the interior of the pretreatment chamber 4, a handle 1201 is connected to one side of the activated carbon plate 12, the activated carbon plate 12 is connected to the pretreatment chamber 4 by means of plugging, a sealing pad is installed inside the handle 1201, the activated carbon plate 12 is adapted to the pretreatment chamber 4 in shape, the diameter of the pretreatment chamber 4 is one half of the diameter of the drying chamber 5, when the activated carbon plate 12 is saturated with adsorbed impurities, a worker can pull out the activated carbon plate 12 by means of the handle 1201 for replacement, so that the operation is convenient, the support 9 is located inside the drying chamber 5 and penetrates through the interior of the pretreatment chamber 4, a sealing pad 903 is adhered to the support 9, the sponge 901 is divided into four equal parts in the support 9, the sealing pad 903 can improve the sealing performance between the support 9 and the pretreatment chamber 4, and the sponge 901 divided into four equal parts can adsorb moisture in the pretreatment chamber 4 for multiple times, the manual treatment is not needed, and the method is simple, convenient and convenient to operate.
Please refer to fig. 1, 2, 4, two ends of the refrigerating sheet 13 are divided into a refrigerating sheet hot end 1301 and a refrigerating sheet cold end 1302, the refrigerating sheet hot end 1301 is located in the drying chamber 5, the refrigerating sheet cold end 1302 is located in the pre-processing chamber 4, because the load of the air compressor 1 can be increased after the air compressor 1 sucks hot air, the refrigerating sheet 13 can be opened after the hot air is sucked in summer, the hot air is cooled, the working efficiency of the air compressor 1 can be improved, an air inlet pipe 3 penetrates through one side of the device main body 2, the air inlet pipe 3 is communicated with the pre-processing chamber 4, the bottom end of the pre-processing chamber 4 is connected with an air inlet of the air compressor 1, after the air compressor 1 is opened, air enters from the air inlet pipe 3 and is pre-processed through the pre-processing chamber 4, and enters the air compressor 1 through the air inlet of the air compressor 1 for compression.
The implementation principle of the embodiment is as follows: firstly, the device main body 2 is installed on the air compressor 1, when the air compressor 1 is used, the air compressor 1 is opened, the air enters the interior of the pretreatment chamber 4 from the air inlet pipe 3, the air firstly passes through the sponge 901 positioned in the pretreatment chamber 4, the sponge 901 can adsorb most impurities and moisture in the air, then the air passes through the cold end 1302 of the refrigerating sheet, the refrigerating sheet 13 can be opened after hot air is sucked in summer to cool the hot air, then the air passes through the activated carbon plate 12, the activated carbon plate 12 can continuously adsorb fine impurities in the air, the air is filtered, finally, the air entering the air compressor 1 is kept at low temperature and pure to be compressed by the air compressor 1, after the sponge positioned in the pretreatment chamber 4 is adsorbed and saturated, a worker can open the motor 8, the motor 8 drives the central shaft 902 to rotate, so that the bracket 9 rotates, and the other sponge 901 rotates to enter the pretreatment chamber 4, sealed pad 903 is all installed in the outside of support 9, can keep the encapsulated situation of pre-treatment chamber 4, and adsorb saturated sponge 901 and get into drying chamber 5 after, the staff opens draught fan 6, can attract the steam of refrigeration piece 13 to dry moist sponge 901, when the steam of refrigeration piece 13 is not enough, can open hot plate 10, provide the heat source, activated carbon plate 12 can be taken out through handle 1201 simultaneously, the convenient change.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (7)
1. The utility model provides a leading air preprocessing device of air compressor machine, includes air compressor machine (1) and device main part (2), its characterized in that: device main part (2) inside divide into pre-treatment chamber (4) and drying chamber (5), dead lever (7) are installed to the inside top of drying chamber (5), draught fan (6) are installed at the top of dead lever (7), motor (8) are installed to bottom one side of dead lever (7), the output of motor (8) is connected with center pin (902), support (9) are installed in the outside of center pin (902), install sponge (901) on support (9), refrigeration piece (13) are installed to the intermediate position of pre-treatment chamber (4) and drying chamber (5), grid tray (11) are installed to the inside below of pre-treatment chamber (4) and drying chamber (5).
2. The front air pretreatment device of the air compressor as claimed in claim 1, wherein: activated carbon plate (12) are installed to the inside below of preliminary treatment room (4), one side of activated carbon plate (12) is connected with handle (1201), activated carbon plate (12) are connected with preliminary treatment room (4) through the mode of pegging graft, the inboard of handle (1201) is provided with sealed the pad.
3. The front air pretreatment device of the air compressor as claimed in claim 1, wherein: the support (9) is positioned in the drying chamber (5) and penetrates through the interior of the pretreatment chamber (4).
4. The front air pretreatment device of the air compressor as claimed in claim 1, wherein: a sealing gasket (903) is adhered to the support (9), and the sponge (901) is divided into four equal parts in the support (9).
5. The front air pretreatment device of the air compressor as claimed in claim 1, wherein: the two ends of the refrigerating sheet (13) are respectively provided with a refrigerating sheet hot end (1301) and a refrigerating sheet cold end (1302), the refrigerating sheet hot end (1301) is located in the drying chamber (5), and the refrigerating sheet cold end (1302) is located in the pretreatment chamber (4).
6. The front air pretreatment device of the air compressor as claimed in claim 1, wherein: the diameter of preliminary treatment room (4) is the half of drying chamber (5) diameter, hot plate (10) are installed to the inside below of drying chamber (5), exhaust pipe (14) are installed at the top of drying chamber (5).
7. The front air pretreatment device of the air compressor as claimed in claim 1, wherein:
one side of device main part (2) is run through and is had intake pipe (3), intake pipe (3) are linked together with pre-treatment chamber (4), the bottom of pre-treatment chamber (4) is connected with the air inlet of air compressor machine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298127.2A CN113864194A (en) | 2021-11-04 | 2021-11-04 | Leading air preprocessing device of air compressor machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111298127.2A CN113864194A (en) | 2021-11-04 | 2021-11-04 | Leading air preprocessing device of air compressor machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113864194A true CN113864194A (en) | 2021-12-31 |
Family
ID=78986852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111298127.2A Pending CN113864194A (en) | 2021-11-04 | 2021-11-04 | Leading air preprocessing device of air compressor machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN113864194A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016313A1 (en) * | 2015-07-29 | 2017-02-02 | 王东旭 | Bladeless fan with air energy dehumidification function |
| CN109621612A (en) * | 2019-01-08 | 2019-04-16 | 杭州锦绣工坊工艺品有限公司 | One kind being based on weaving gas processing device |
| CN210590041U (en) * | 2019-09-16 | 2020-05-22 | 惠州市金丰塑胶模具精密有限公司 | Plastic processing pelleter |
| CN210623027U (en) * | 2019-07-31 | 2020-05-26 | 西安工程大学 | Cooling and dehumidifying device for air inlet of air compressor |
| CN212512339U (en) * | 2020-05-06 | 2021-02-09 | 广德正大电子科技有限公司 | Printed circuit board drying device |
| CN112571665A (en) * | 2020-11-20 | 2021-03-30 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | Drying treatment device is used in production of 3D printing consumables |
| CN113464461A (en) * | 2021-07-26 | 2021-10-01 | 张少杰 | Bipolar centrifugal air compressor |
-
2021
- 2021-11-04 CN CN202111298127.2A patent/CN113864194A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017016313A1 (en) * | 2015-07-29 | 2017-02-02 | 王东旭 | Bladeless fan with air energy dehumidification function |
| CN109621612A (en) * | 2019-01-08 | 2019-04-16 | 杭州锦绣工坊工艺品有限公司 | One kind being based on weaving gas processing device |
| CN210623027U (en) * | 2019-07-31 | 2020-05-26 | 西安工程大学 | Cooling and dehumidifying device for air inlet of air compressor |
| CN210590041U (en) * | 2019-09-16 | 2020-05-22 | 惠州市金丰塑胶模具精密有限公司 | Plastic processing pelleter |
| CN212512339U (en) * | 2020-05-06 | 2021-02-09 | 广德正大电子科技有限公司 | Printed circuit board drying device |
| CN112571665A (en) * | 2020-11-20 | 2021-03-30 | 安徽省春谷3D打印智能装备产业技术研究院有限公司 | Drying treatment device is used in production of 3D printing consumables |
| CN113464461A (en) * | 2021-07-26 | 2021-10-01 | 张少杰 | Bipolar centrifugal air compressor |
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Application publication date: 20211231 |