CN112917864A - Continuous preheating and drying device for PVC-O pipe fitting - Google Patents
Continuous preheating and drying device for PVC-O pipe fitting Download PDFInfo
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- CN112917864A CN112917864A CN202110094762.2A CN202110094762A CN112917864A CN 112917864 A CN112917864 A CN 112917864A CN 202110094762 A CN202110094762 A CN 202110094762A CN 112917864 A CN112917864 A CN 112917864A
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- pipe fitting
- pvc
- drying device
- box body
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- 238000001035 drying Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000005192 partition Methods 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 238000010992 reflux Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 25
- 238000007493 shaping process Methods 0.000 abstract description 3
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 15
- 239000004800 polyvinyl chloride Substances 0.000 description 15
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a continuous preheating and drying device for PVC-O (polyvinyl chloride-O) pipes, which comprises a drying box body, a pipe fixing mechanism and a heating mechanism, wherein the pipe fixing mechanism is positioned in the drying box body and used for fixing the pipes; the heating mechanism comprises a heating rod arranged in the pipe fitting fixing mechanism in a matching manner, a sleeve sleeved on the periphery of the heating rod and a convection fan arranged on the side surface inside the drying box body, and the convection fan corresponds to the pipe fitting fixing mechanism; the device structure is reliable, preheat and dry effectually, and performance is good, reliably fixes the pipe fitting through pipe fitting fixed establishment to produce wind-force through the heating rod in the heating mechanism and the convection current fan of stoving box and preheat the stoving to the pipe fitting, and the effect of leaving the temperature through the big envelope makes the heat can be long-time encircle the outer wall that covers at the pipe fitting, improves the stoving effect to the pipe fitting, guarantees the shaping quality of pipe fitting.
Description
Technical Field
The invention relates to the technical field of material preparation, in particular to a continuous preheating and drying device for a PVC-O pipe fitting.
Background
The PVC-O pipe is characterized in that molecules of a PVC material are rearranged by biaxial tension at the glass transition temperature of the PVC material, so that the material (pipe wall) forms a net structure, the brittle failure caused by micro cracks of a material body or scratches on the surface of the pipe wall can be borne, and the strength, the toughness and the anti-cracking performance of the pipe are obviously improved. The biaxially oriented polyvinyl chloride (PVC-O) pipe is manufactured by a special orientation processing technology, and the processing technology is characterized in that the PVC-U pipe produced by an extrusion method is axially stretched and radially stretched, so that PVC long-chain molecules in the pipe are regularly arranged in a biaxial direction, a novel PVC pipe with high strength, high toughness, high impact resistance and fatigue resistance is obtained, and the performance of the novel PVC pipe is far superior to that of a common PVC-U pipe. The existing drying device has the disadvantages of complex structure, high cost, poor use performance, uneven preheating and drying and serious influence on the forming quality of the pipe fitting.
Disclosure of Invention
The invention aims to provide a continuous preheating and drying device for PVC-O pipes, which is used for solving the problem of poor preheating and drying effects of the existing PVC-O pipes.
The technical scheme for solving the technical problems is as follows: a continuous preheating and drying device for PVC-O pipes comprises a drying box body, a pipe fixing mechanism and a heating mechanism, wherein the pipe fixing mechanism is positioned in the drying box body and used for fixing the pipes;
the heating mechanism comprises a heating rod arranged in the pipe fitting fixing mechanism in a matching mode, a sleeve sleeved on the periphery of the heating rod and a convection fan arranged on the inner side face of the drying box body, and the convection fan corresponds to the pipe fitting fixing mechanism.
The beneficial effects of adopting the above technical scheme are: the device structure is reliable, preheat and dry effectually, and performance is good, reliably fixes the pipe fitting through pipe fitting fixed establishment to produce wind-force through the heating rod in the heating mechanism and the convection current fan of stoving box and preheat the stoving to the pipe fitting, and the effect of leaving the temperature through the big envelope makes the heat can be long-time encircle the outer wall that covers at the pipe fitting, improves the stoving effect to the pipe fitting, guarantees the shaping quality of pipe fitting.
Further, the pipe fitting fixing mechanism comprises a plurality of groups of first fixing assemblies and a second fixing assembly, wherein the first fixing assemblies are sequentially arranged and arranged, the second fixing assemblies are arranged between the adjacent first fixing assemblies, the end parts of the first fixing assemblies are spaced with the end parts of the second fixing assemblies for hot air circulation, and the first fixing assemblies are sequentially connected with the second fixing assemblies to form a honeycomb structure.
The beneficial effects of adopting the above technical scheme are: the characteristic arrangement of fixed net piece through the multiaspect forms a series of continuous honeycombed network structure, and its structure is reliable, can disperse to undertake the external force that comes from each side, and effectual improvement load effect can preheat the stoving to a plurality of pipe fittings simultaneously, improves work efficiency, reduce cost to a certain extent. And through the arrangement of the top end position gap of the first fixing component and the second fixing component, hot gas flows along the gap between the first fixing component and the second fixing component to form a downstream state, and the uniformity of hot gas coverage is ensured.
Further, the fixed subassembly of first fixed subassembly and second all includes a plurality of fixed net pieces that connect gradually, and the perforation has been seted up at fixed net piece middle part, and the big envelope cooperation is connected in the perforation.
The beneficial effects of adopting the above technical scheme are: the fixed net block is used as a single fixed unit of the first fixed component and the second fixed component, and the structure is reliable and the fixing effect is good.
Further, the distance between the centers of the adjacent fixed net blocks on the first fixed assembly is equal to the distance between the center of the fixed net block on the first fixed assembly and the center of the fixed net block of the second fixed assembly.
The beneficial effects of adopting the above technical scheme are: through the injecing to interval between the fixed net piece, guarantee steam and encircle the homogeneity between adjacent pipe fitting, avoid appearing turbulent flow influence stoving effect.
Furthermore, a reflection backflow assembly used for reflecting backflow of hot air is arranged on the inner wall of the side face, far away from the convection fan, in the drying box body, and the reflection backflow assembly corresponds to the pipe fitting fixing mechanism.
The beneficial effects of adopting the above technical scheme are: form the reverse reflux effect of wind-force production through the reflection backward flow subassembly with convection current fan to the realization is carried out hot-blast preheating and is dried once more to the pipe fitting on the pipe fitting fixed establishment, improves the stoving effect.
Furthermore, the reflection backflow component comprises a reflection conical plate which is arranged on the inner wall of the drying box body and is internally provided with a cavity, an air inlet which is arranged at the top end of the reflection conical plate and a backflow air outlet which is arranged on the side face of the reflection conical plate.
The beneficial effects of adopting the above technical scheme are: when the gas heat flow reaches the reflecting conical plate, the gas enters the reflecting conical plate from the gas inlet and is then discharged from the backflow gas outlet hole, so that the backflow discharge of the heat gas is realized, and the reflecting backflow effect is formed.
Further, an arc-shaped partition plate is arranged in a cavity inside the reflecting conical plate, a backflow cavity is formed between the arc-shaped partition plate and the side wall of the reflecting conical plate, the backflow cavity is communicated with the air inlet, a heating wire is paved on the inner wall of the arc-shaped partition plate, and the arc center of the arc-shaped partition plate faces the side face of the conical arc-shaped partition plate.
The beneficial effects of adopting the above technical scheme are: cut off the air current and briefly be detained at the backward flow intracavity through arc-shaped partition plate, and then heat again through the steam of heating wire in to the backward flow intracavity for obtain the temperature rise once more by the exhaust hot gas of backward flow venthole, effectual improvement is to the stoving effect of pipe fitting.
Further, an insulating layer is laid on the inner wall of the drying box body.
The beneficial effects of adopting the above technical scheme are: through the heat preservation setting, improve the heat preservation effect in the drying box, reduce scattering and disappearing of steam temperature, practice thrift the energy consumption.
Further, the envelope is made of a material resistant to thermal oxidation.
The beneficial effects of adopting the above technical scheme are: the thermal oxidation resistance of the envelope is improved and the service life is prolonged by limiting the material of the envelope.
The invention has the following beneficial effects: the continuous preheating and drying device for the PVC-O pipe fitting provided by the invention is reliable in structure and good in service performance, the honeycomb structure is adopted to accurately arrange the positions of the pipe fittings, so that the central heating pipes are uniformly distributed, the uniformity of the heat dissipation of the pipe fittings can be ensured, the black sleeve is coated outside the heating pipes, the thermal oxidation aging is avoided, and a strong convection fan can form convection and keep the temperature constant. And form the reverse reflux effect with convection current fan through the reflection backward flow subassembly to the realization is carried out hot-blast preheating and is dried once more to the pipe fitting on the pipe fitting fixed establishment, prolongs the hot-blast effect time on the pipe fitting, improves the stoving effect.
Drawings
FIG. 1 is a side view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a schematic view of a reflective-reflow assembly of the present invention;
the reference numerals shown in fig. 1 to 3 are respectively expressed as: the device comprises a drying box body 1, a pipe fitting fixing mechanism 2, a pipe fitting preheating and drying mechanism 3, a heating rod 30, a jacket 31, a convection fan 32, a first fixing assembly 20, a second fixing assembly 21, a gap 22, a fixing net block 200, a reflection backflow assembly 4, a reflection conical plate 40, an air inlet 41, an air outlet 42, an arc-shaped partition plate 43, a backflow cavity 44 and a heating wire 45.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 2, a continuous preheating and drying device for PVC-O pipe fittings comprises a drying box body 1, a pipe fitting fixing mechanism 2 located in the drying box body 1 and used for fixing the pipe fittings, and a heating mechanism 3 located in the drying box body 1 and used for preheating and drying the pipe fittings; the heating mechanism 3 comprises a heating rod 30 arranged in the pipe fixing mechanism 2 in a matching manner, a sleeve 31 sleeved on the periphery of the heating rod 30 and a convection fan 32 arranged on the inner side surface of the drying box body 1, and the convection fan 32 corresponds to the pipe fixing mechanism 2.
The device structure is reliable, preheat and dry effectually, performance is good, reliably fix the pipe fitting through pipe fitting fixed establishment 2, and produce wind-force through the heating rod 30 among the heating mechanism 3 and the convection current fan 32 among the stoving box 1 and preheat the stoving to the pipe fitting, and the effect of leaving the temperature through big envelope 31 makes the heat can be long-time encircle the outer wall that covers at the pipe fitting, improves the stoving effect to the pipe fitting, guarantees the shaping quality of pipe fitting.
The pipe fixing mechanism 2 includes a plurality of sets of first fixing components 20 arranged in sequence and a second fixing component 21 arranged between the adjacent first fixing components 20, a gap 22 for hot air to flow is formed between the end of the first fixing component 20 and the end of the second fixing component 21, and the first fixing component 20 and the second fixing component 21 are connected in sequence to form a honeycomb structure. The characteristic arrangement of the fixed net blocks 200 with multiple surfaces forms a series of continuous honeycombed net structures, the structure is reliable, external force from each party can be dispersed and borne, the bearing effect is effectively improved, a plurality of pipe fittings can be preheated and dried simultaneously, the working efficiency is improved, and the cost is reduced to a certain extent. And through the arrangement of the gap 22 at the top end position of the first fixing component 20 and the second fixing component 21, the hot gas flows along the gap 22 between the first fixing component 20 and the second fixing component 21, a downstream state is formed, and the uniformity of hot gas coverage is ensured.
The first fixed subassembly 20 and the fixed subassembly 21 of second all include a plurality of fixed net piece 200 that connect gradually, and the perforation has been seted up at fixed net piece 200 middle part, and the cooperation of big envelope 31 is connected in the perforation. The fixing net block 200 is used as a single fixing unit of the first fixing component 20 and the second fixing component 21, and has reliable structure and good fixing effect.
The distance between the centers of the adjacent fixed mesh blocks 200 on the first fixing member 20 is equal to the distance between the centers of the fixed mesh blocks 200 on the first fixing member 20 and the centers of the fixed mesh blocks 200 of the second fixing member 21. Through the limited interval between the fixed net block 200, guarantee steam and encircle the homogeneity between adjacent pipe fitting, avoid appearing turbulent flow and influence the stoving effect.
The inner wall of the side surface far away from the convection fan 32 in the drying box body 1 is provided with a reflection backflow component 4 for reflecting backflow to hot air, and the reflection backflow component 4 corresponds to the pipe fitting fixing mechanism 2. The reverse reflux function is generated by the wind power formed by the convection fan 32 through the reflection reflux assembly 4, thereby realizing the hot air preheating and drying of the pipe fittings on the pipe fitting fixing mechanism 2 again, improving the drying effect,
as shown in fig. 3, the reflective-return assembly 4 includes a reflective cone plate 40 disposed on the inner wall of the drying cabinet 1 and having a cavity therein, an air inlet 41 disposed at the top end of the reflective cone plate 40, and a return air outlet 42 disposed at the side surface of the reflective cone plate 40. When the gas heat flow reaches the reflecting conical plate 40, the gas heat flow enters the reflecting conical plate 40 from the gas inlet 41 and is then discharged from the backflow gas outlet 42, so that the backflow discharge of the hot gas is realized, and the reflecting backflow effect is formed.
An arc-shaped partition plate 43 is arranged in a cavity inside the reflecting conical plate 40, a backflow cavity 44 is formed between the arc-shaped partition plate 43 and the side wall of the reflecting conical plate 40, the backflow cavity 44 is communicated with the air inlet 41, a heating wire 45 is paved on the inner wall of the arc-shaped partition plate 43, and the arc center of the arc-shaped partition plate 43 faces the side face of the conical arc-shaped partition plate 43. Cut off the air current and briefly be detained in backward flow chamber 44 through arc baffle 43, and then heat again through heater strip 45 to the steam in the backward flow chamber 44 for obtain the temperature rise again by the exhaust hot gas of backward flow venthole 42, effectual improvement is to the stoving effect of pipe fitting.
The inner wall of the drying box body 1 is paved with a heat preservation layer. Through the heat preservation setting, improve the heat preservation effect in the stoving box 1, reduce scattering and disappearing of steam temperature, practice thrift the energy consumption.
The envelope 31 is made of a material resistant to thermal oxidation. The material of the jacket 31 is limited, so that the thermal oxidation resistance of the jacket 31 is improved, and the service life is prolonged.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The continuous preheating and drying device for the PVC-O pipe fittings is characterized by comprising a drying box body (1), a pipe fitting fixing mechanism (2) which is positioned in the drying box body (1) and used for fixing the pipe fittings, and a heating mechanism (3) which is positioned in the drying box body (1) and used for preheating and drying the pipe fittings;
heating mechanism (3) sets up including the cooperation heating rod (30), the cover in pipe fitting fixed establishment (2) are established heating rod (30) outlying big envelope (31) and setting are in convection current fan (32) of inside side of stoving box (1), just convection current fan (32) with pipe fitting fixed establishment (2) are corresponding.
2. The continuous preheating and drying device for PVC-O pipe fittings according to claim 1, wherein the pipe fitting fixing mechanism (2) comprises a plurality of groups of first fixing assemblies (20) and second fixing assemblies (21) arranged between the adjacent first fixing assemblies (20), and gaps (22) for hot air circulation are formed between the ends of the first fixing assemblies (20) and the ends of the second fixing assemblies (21).
3. The continuous preheating and drying device for the PVC-O pipe fittings according to claim 2, wherein the first fixing component (20) and the second fixing component (21) comprise a plurality of fixing net blocks (200) which are sequentially connected, a through hole is formed in the middle of each fixing net block (200), the envelope (31) is connected in the through hole in a matched mode, and the first fixing component (20) and the second fixing component (21) are sequentially connected with each other to form a honeycomb structure.
4. The continuous preheating and drying device for PVC-O pipes according to claim 3, characterized in that the distance between the centers of the adjacent fixing net blocks (200) on the first fixing assembly (20) is equal to the distance between the centers of the fixing net blocks (200) on the first fixing assembly (20) and the centers of the fixing net blocks (200) of the second fixing assembly (21).
5. The continuous preheating and drying device for PVC-O pipe fittings according to claim 1, wherein a reflective reflux assembly (4) for reflective reflux of hot air is arranged on the inner wall of the side surface of the drying box body (1) far away from the convection fan (32), and the reflective reflux assembly (4) corresponds to the pipe fitting fixing mechanism (2).
6. The continuous preheating drying device for PVC-O pipe fittings according to claim 5, characterized in that the reflection backflow component (4) comprises a reflection cone plate (40) which is arranged on the inner wall of the drying box body (1) and has a cavity inside, an air inlet (41) which is arranged at the top end of the reflection cone plate (40), and a backflow air outlet (42) which is arranged at the side surface of the reflection cone plate (40).
7. The continuous preheating and drying device for the PVC-O pipe fittings according to claim 6, wherein an arc-shaped partition plate (43) is arranged in the cavity inside the reflecting conical plate (40), a backflow cavity (44) is formed between the arc-shaped partition plate (43) and the side wall of the reflecting conical plate (40), the backflow cavity (44) is communicated with the air inlet (41), the heating wire (45) is paved on the inner wall of the arc-shaped partition plate (43), and the arc center of the arc-shaped partition plate (43) faces the side face of the conical arc-shaped partition plate (43).
8. The continuous preheating and drying device for PVC-O pipe fittings according to any one of claims 1 to 7, characterized in that the inner wall of the drying box body (1) is coated with an insulating layer.
9. Continuous pre-heating drying device for PVC-O pipes according to claim 8, characterised in that said envelope (31) is made of thermo-oxidative resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094762.2A CN112917864A (en) | 2021-01-25 | 2021-01-25 | Continuous preheating and drying device for PVC-O pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110094762.2A CN112917864A (en) | 2021-01-25 | 2021-01-25 | Continuous preheating and drying device for PVC-O pipe fitting |
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| Publication Number | Publication Date |
|---|---|
| CN112917864A true CN112917864A (en) | 2021-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110094762.2A Pending CN112917864A (en) | 2021-01-25 | 2021-01-25 | Continuous preheating and drying device for PVC-O pipe fitting |
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| CN (1) | CN112917864A (en) |
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| WO2020111817A1 (en) * | 2018-11-30 | 2020-06-04 | 엘지전자 주식회사 | Dryer |
| CN211316877U (en) * | 2019-11-23 | 2020-08-21 | 丹阳市陵合美光学仪器有限公司 | Drying device is used in production of stage printing opacity mirror |
| CN212124132U (en) * | 2019-12-18 | 2020-12-11 | 南京迈亚橡塑机械制造有限公司 | A weather machine for extruder production line |
| CN211730661U (en) * | 2019-12-26 | 2020-10-23 | 江西鸿宇电路科技有限公司 | Aluminum substrate drying equipment |
| CN212179500U (en) * | 2020-04-15 | 2020-12-18 | 深圳市新宇昇电子有限公司 | Strip-shaped high polymer material drying device |
| CN112178915A (en) * | 2020-10-21 | 2021-01-05 | 苏州金猫咖啡有限公司 | Hot air device |
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Application publication date: 20210608 |