CN112461187A - Parallelism spot check equipment based on optical glass lens production line - Google Patents
Parallelism spot check equipment based on optical glass lens production line Download PDFInfo
- Publication number
- CN112461187A CN112461187A CN202011385022.6A CN202011385022A CN112461187A CN 112461187 A CN112461187 A CN 112461187A CN 202011385022 A CN202011385022 A CN 202011385022A CN 112461187 A CN112461187 A CN 112461187A
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- China
- Prior art keywords
- frame body
- spot
- parallelism
- optical glass
- production line
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- 239000005304 optical glass Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims abstract description 11
- 239000006059 cover glass Substances 0.000 claims abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 38
- 238000005070 sampling Methods 0.000 claims description 32
- 238000007689 inspection Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 19
- 238000010521 absorption reaction Methods 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 244000309464 bull Species 0.000 abstract description 7
- 210000004340 zona pellucida Anatomy 0.000 abstract description 3
- 238000009833 condensation Methods 0.000 abstract description 2
- 230000005494 condensation Effects 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/20—Cleaning of moving articles, e.g. of moving webs or of objects on a conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24V—COLLECTION, PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED FOR
- F24V30/00—Apparatus or devices using heat produced by exothermal chemical reactions other than combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses parallelism spot-checking equipment based on an optical glass lens production line, which comprises a spot-checking equipment frame body and protective glass, wherein the protective glass is embedded and installed in the spot-checking equipment frame body; the inside of selective examination equipment framework rotates through the bearing and installs the bull stick, and the quantity of bull stick is two sets of, is the symmetry setting in the selective examination equipment framework, and is two sets of equal fixed cover of symmetry is equipped with changes the roller on the bull stick, and changes the quantity of roller and be two sets of, two sets of it is equipped with the zona pellucida to change common cover on the roller, one side and the cover glass of zona pellucida are located the side sliding connection in the selective examination equipment framework. According to the parallelism spot check equipment based on the optical glass lens production line, disclosed by the invention, the wettability in the spot check equipment can be kept when the optical glass is detected, the indoor gas is prevented from being too dry due to the condensation of moisture in the indoor gas, the spot check accuracy can be ensured, and a better use prospect is brought.
Description
Technical Field
The invention relates to the technical field of optical glass parallelism spot check, in particular to parallelism spot check equipment based on an optical glass lens production line.
Background
The optical glass is a glass material used for manufacturing lenses, prisms, reflectors, windows and the like of optical instruments or mechanical systems, and comprises colorless optical glass, colored optical glass, radiation-resistant optical glass, radiation-proof glass, optical quartz glass and the like.
The existing parallelism spot-checking equipment has certain defects when in use, when optical glass is detected, indoor drying is easy to occur, the effect of spot-checking is influenced, certain adverse effects are brought to the use process of people, and therefore the parallelism spot-checking equipment based on the optical glass lens production line is provided.
Disclosure of Invention
The invention mainly aims to provide parallelism spot-checking equipment based on an optical glass lens production line, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the parallelism spot check equipment based on the optical glass lens production line comprises a spot check equipment frame body and protective glass, wherein the protective glass is embedded in the spot check equipment frame body;
the interior of the sampling inspection equipment frame body is rotatably provided with two groups of rotating rods through bearings, the rotating rods are symmetrically arranged in the sampling inspection equipment frame body, rotating rollers are symmetrically and fixedly sleeved on the two groups of rotating rods, the two groups of rotating rollers are provided with two groups, a transparent belt is sleeved on the two groups of rotating rollers together, and one side of the transparent belt is in sliding connection with the side surface of the protective glass in the sampling inspection equipment frame body;
a liquid storage tank corresponding to the rotating rod is arranged on the lower side of the selective examination equipment frame body, a water absorption strip is fixedly and hermetically connected to an opening at the top of the liquid storage tank, a plurality of L-shaped air guide pipes are communicated with the outside, and an opening at one end, far away from the liquid storage tank, of each air guide pipe faces the interior of the selective examination equipment frame body;
the mounting groove has been seted up to the bilateral symmetry of selective examination equipment framework, the both ends that are located selective examination equipment framework downside bull stick all extend to the mounting groove that corresponds and fixedly connected with carousel, and the horizontal axis coincidence of bull stick and carousel, the lateral wall of carousel and the cell wall seal sliding connection of mounting groove, radially evenly seted up a plurality of grooves of keeping in on the carousel, the standing groove that correspond with the mounting groove is seted up to the symmetry in the selective examination equipment framework, and every standing groove all is located the top of mounting groove, the intercommunication is equipped with and keeps in groove complex inlet pipe between mounting groove and the standing groove, the intercommunication is equipped with and keeps in groove complex row material pipe between mounting groove and the reservoir.
Preferably, the outer surface of the transparent belt is connected with the inner wall of the frame of the sampling device in a sliding manner.
Preferably, the upper end face of the water absorption strip is connected with the transparent belt in a sliding mode.
Preferably, a plurality of capillary tubes are uniformly and vertically arranged in the water absorption strip in a penetrating manner.
Preferably, the placing groove is filled with a heating agent.
Preferably, the airway tube is made of steel.
Preferably, the outer surface of the frame body of the sampling inspection device is coated with antirust paint.
Preferably, the sampling device frame is connected with a power supply.
Compared with the prior art, the invention has the following beneficial effects:
1. by arranging the rotating rod and the transparent belt, if the indoor temperature difference is overlarge during detection, the weight of condensed water on the transparent belt close to the indoor is far larger than that of the transparent belt on the other side, so that the transparent belt rotates under the action of gravity and rubs with the water absorption strip, the condensed water on the transparent belt can be removed, dust on the surface of the transparent belt can be removed, the cleanness of the transparent belt is kept, and the quality of detecting the parallelism of the optical glass can be improved through the structure;
2. by arranging the turntable and the heating agent, the turntable is driven to rotate by utilizing the kinetic energy of the rotation of the transparent belt during detection, so that the heating agent in the placing groove can be intermittently put into the liquid storage tank, and the condensed water in the liquid storage tank can be supplied with energy by utilizing the heat energy generated by dissolving the heating agent in water, so that the evaporation of the condensed water is accelerated, the condensed water is discharged and flows back to the indoor space, the phenomenon that the indoor air is too dry due to the condensation of the moisture in the indoor air is avoided, and the detection accuracy can be ensured through the structure;
3. through the space that the zona pellucida and selective examination equipment framework constitute, can guarantee curtain wall glass's light transmissivity, the staff of being convenient for watches, the problem appears and is convenient for in time handle.
Drawings
Fig. 1 is a schematic view of the overall structure of a parallelism sampling device based on an optical glass lens production line according to the present invention.
Fig. 2 is a side view of a parallelism sampling apparatus of an optical glass lens production line according to the present invention.
Fig. 3 is a top view of a parallelism sampling apparatus based on an optical glass lens production line according to the present invention.
Fig. 4 is an enlarged view of a parallelism spot-check apparatus a in fig. 1 based on an optical glass lens production line according to the present invention.
In the figure: 1. a spot inspection equipment frame; 2. protective glass; 3. a rotating rod; 4. rotating the roller; 5. a transparent tape; 6. a liquid storage tank; 7. a water absorbent strip; 8. an air duct; 9. a placement groove; 10. mounting grooves; 11. a feed pipe; 12. a discharge pipe; 13. a turntable; 14. a temporary storage tank.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-4, a parallelism sampling inspection device based on an optical glass lens production line comprises a sampling inspection device frame 1 and a protective glass 2, wherein the protective glass 2 is embedded in the sampling inspection device frame 1;
the rotary rods 3 are rotatably arranged in the sampling inspection equipment frame body 1 through bearings, the number of the rotary rods 3 is two, the rotary rods are symmetrically arranged in the sampling inspection equipment frame body 1, the rotary rollers 4 are symmetrically and fixedly sleeved on the two groups of rotary rods 3, the number of the rotary rollers 4 is two, the two groups of rotary rollers 4 are commonly sleeved with transparent belts 5, and one side of each transparent belt 5 is in sliding connection with the side face, located in the sampling inspection equipment frame body 1, of the protective glass 2;
a liquid storage tank 6 corresponding to the rotating rod 3 is formed in the lower side of the selective examination equipment frame body 1, a water absorption strip 7 is fixedly and hermetically connected to an opening in the top of the liquid storage tank 6, a plurality of L-shaped air guide pipes 8 are communicated between the liquid storage tank 6 and the outside, an opening in one end, away from the liquid storage tank 6, of each air guide pipe 8 faces the interior of the selective examination equipment frame body 1, and condensed water sliding along the wall of the liquid storage tank 6 can be prevented from being discharged through the air guide pipes 8 by the aid of the L-shaped;
Further, the outer surface of the transparent belt 5 is connected with the inner wall of the sampling inspection equipment frame body 1 in a sliding mode, so that external impurities are prevented from entering a space formed by the transparent belt 5 and the sampling inspection equipment frame body 1, the transparent belt 5 cannot influence the light transmission of the glass curtain wall, and the glass curtain wall can be normally used.
Further, the upper end face of the water absorption strip 7 is in sliding connection with the transparent belt 5, so that the water absorption strip 7 can rapidly absorb the condensed water on the outer surface of the transparent belt 5 when the transparent belt 5 rotates, and the transparent belt 5 is cleaned.
Further, even vertical the running through is equipped with many capillaries in the strip 7 that absorbs water, and according to the capillary action of capillary, the capillary can be quick carry the comdenstion water of 7 up end departments that absorb water to the reservoir 6 in.
Further, the placing groove 9 is filled with a heating agent, the heating agent is sodium hydroxide crystals, the sodium hydroxide crystals can emit a large amount of heat when dissolved in water, the reaction belongs to physical reaction, after water in the sodium hydroxide solution is evaporated, the sodium hydroxide can be separated out again, sodium carbonate generated by the reaction of the sodium hydroxide and carbon dioxide belongs to stable salts, and the sodium carbonate has good water absorption when being separated out into powder and can be used as a dehumidifying agent, so that harm to human bodies and the environment can be avoided.
Furthermore, the air duct 8 is made of steel, and can play a good role in rust prevention.
Furthermore, the outer surface of the sampling inspection equipment frame body 1 is coated with antirust paint, so that the service life of the sampling inspection equipment frame body 1 can be prolonged.
Further, the sampling inspection equipment frame 1 is connected with a power supply, so that the sampling inspection equipment frame 1 can operate conveniently.
The working principle and the using process of the invention are as follows: when the device is used for detecting the optical glass, if the indoor temperature is higher than the outdoor temperature and the temperature difference is larger, the water in the indoor gas is liquefied and condensed on one side of the transparent belt 5 close to the indoor space to form condensed water, and the condensed water is gradually increased to form larger water drops, the weight of one side of the transparent belt 5 close to the indoor space is gradually increased, the condensed water on one side of the transparent belt 5 close to the outdoor space is smaller, so that the transparent belt 5 rotates under the action of gravity, one side of the transparent belt 5 attached with the condensed water slides through the upper end face of the water absorption strip 7 in sequence, the condensed water on the transparent belt 5 is absorbed and removed by the water absorption strip 7 and the capillary tube, and meanwhile, the water absorption strip 7 is matched with the condensed water to remove impurities such as dust and the like on the transparent belt 5 and clean the transparent belt 5, so as to improve the light transmission and improve the detection precision, meanwhile, when the transparent belt 5 rotates, the transparent belt 5 drives the rotating roller 4 to rotate, the rotating roller 4 drives the rotating rod 3 to rotate, the rotating rod 3 positioned on the lower side of the sampling inspection equipment frame body 1 drives the rotating disc 13 to rotate, a plurality of temporary storage tanks 14 on the rotating disc 13 are alternately communicated with the feeding pipe 11 and the discharging pipe 12, when the temporary storage tanks 14 are in direct communication with the feeding pipe 11, the heating agent in the placing tank 9 falls into the temporary storage tanks 14 through the feeding pipe 11, when the temporary storage tanks 14 are in direct communication with the discharging pipe 12, the heating agent in the temporary storage tanks 14 enters the liquid storage tank 6 through the discharging pipe 12, so that the heating agent is dissolved in the condensed water in the liquid storage tank 6 to emit a large amount of heat, the condensed water in the liquid storage tank 6 is rapidly evaporated into high-temperature steam in a heated environment and is discharged to the indoor through the air duct 8 under the action of air pressure, thereby improving the humidity of indoor air and avoiding over-drying of the indoor, through the combination of the above structures, the precision of optical glass spot check can be ensured, and the optical glass spot check is beneficial to people to use.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a depth of parallelism spot check equipment based on optical glass lens production line, includes spot check equipment framework (1) and cover glass (2), its characterized in that: the protective glass (2) is embedded in the frame body (1) of the sampling inspection equipment;
the interior of the sampling inspection equipment frame body (1) is rotatably provided with rotating rods (3) through bearings, the number of the rotating rods (3) is two, the rotating rods are symmetrically arranged in the sampling inspection equipment frame body (1), the two groups of the rotating rods (3) are symmetrically and fixedly sleeved with rotating rollers (4), the number of the rotating rollers (4) is two, the two groups of the rotating rollers (4) are sleeved with transparent belts (5) together, and one side of each transparent belt (5) is in sliding connection with the side face, located in the sampling inspection equipment frame body (1), of the protective glass (2);
a liquid storage tank (6) corresponding to the rotating rod (3) is formed in the lower side of the selective examination equipment frame body (1), a water absorption strip (7) is fixedly and hermetically connected to an opening in the top of the liquid storage tank (6), a plurality of L-shaped air guide pipes (8) are communicated between the liquid storage tank (6) and the outside, and an opening in one end, far away from the liquid storage tank (6), of each air guide pipe (8) faces the interior of the selective examination equipment frame body (1);
mounting grooves (10) are symmetrically formed in two sides of the sampling inspection equipment frame body (1), two ends of a rotating rod (3) positioned on the lower side of the sampling inspection equipment frame body (1) extend into the corresponding mounting grooves (10) and are fixedly connected with rotating discs (13), the rotating rod (3) is superposed with the horizontal axis of the rotating disc (13), the side wall of the rotating disc (13) is in sealed sliding connection with the groove wall of the mounting groove (10), a plurality of temporary storage grooves (14) are uniformly arranged on the rotary table (13) along the radial direction, the frame body (1) of the sampling inspection equipment is symmetrically provided with placing grooves (9) corresponding to the mounting grooves (10), each placing groove (9) is positioned above the mounting groove (10), a feeding pipe (11) matched with the temporary storage groove (14) is communicated between the mounting groove (10) and the placing groove (9), and a discharge pipe (12) matched with the temporary storage tank (14) is communicated between the mounting groove (10) and the liquid storage tank (6).
2. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the outer surface of the transparent belt (5) is connected with the inner wall of the sampling inspection equipment frame body (1) in a sliding mode.
3. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the upper end surface of the water absorption strip (7) is connected with the transparent belt (5) in a sliding way.
4. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: a plurality of capillary tubes are uniformly and vertically arranged in the water absorption strip (7) in a penetrating way.
5. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the placing groove (9) is filled with a heating agent.
6. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the air duct (8) is made of steel.
7. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the outer surface of the sampling inspection equipment frame body (1) is coated with antirust paint.
8. The parallelism spot-check apparatus based on an optical glass lens production line according to claim 1, wherein: the sampling inspection equipment frame body (1) is connected with a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385022.6A CN112461187A (en) | 2020-12-01 | 2020-12-01 | Parallelism spot check equipment based on optical glass lens production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385022.6A CN112461187A (en) | 2020-12-01 | 2020-12-01 | Parallelism spot check equipment based on optical glass lens production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112461187A true CN112461187A (en) | 2021-03-09 |
Family
ID=74805667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011385022.6A Withdrawn CN112461187A (en) | 2020-12-01 | 2020-12-01 | Parallelism spot check equipment based on optical glass lens production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112461187A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739885A1 (en) * | 1997-09-11 | 1999-03-18 | Bernd Klose | Surface qualification device for quality control |
| CN207266951U (en) * | 2018-01-10 | 2018-04-24 | 武汉汉唐智能工业技术有限公司 | Slide plate flatness detection device |
| CN208983555U (en) * | 2018-09-30 | 2019-06-14 | 国网河南省电力公司镇平县供电公司 | A kind of power equipment storehouse condensation-preventing device |
| CN209783482U (en) * | 2019-03-14 | 2019-12-13 | 福州闽波光电技术有限公司 | Sampling inspection device for parallelism and thickness of optical glass sheet |
-
2020
- 2020-12-01 CN CN202011385022.6A patent/CN112461187A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19739885A1 (en) * | 1997-09-11 | 1999-03-18 | Bernd Klose | Surface qualification device for quality control |
| CN207266951U (en) * | 2018-01-10 | 2018-04-24 | 武汉汉唐智能工业技术有限公司 | Slide plate flatness detection device |
| CN208983555U (en) * | 2018-09-30 | 2019-06-14 | 国网河南省电力公司镇平县供电公司 | A kind of power equipment storehouse condensation-preventing device |
| CN209783482U (en) * | 2019-03-14 | 2019-12-13 | 福州闽波光电技术有限公司 | Sampling inspection device for parallelism and thickness of optical glass sheet |
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Application publication date: 20210309 |
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| WW01 | Invention patent application withdrawn after publication |