CN209399713U - A kind of environmental protection gypsum board manufacture drying machine - Google Patents
A kind of environmental protection gypsum board manufacture drying machine Download PDFInfo
- Publication number
- CN209399713U CN209399713U CN201822047579.3U CN201822047579U CN209399713U CN 209399713 U CN209399713 U CN 209399713U CN 201822047579 U CN201822047579 U CN 201822047579U CN 209399713 U CN209399713 U CN 209399713U
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- Prior art keywords
- plasterboard
- air
- outlet
- exhaust passage
- discharge pipe
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Abstract
The utility model belongs to drying equipment technical field, propose a kind of environmentally friendly gypsum board manufacture drying machine, including body, the first interconnected hothouse, secondary drying chamber are disposed in body, the plasterboard entrance being connected to the first hothouse, the plasterboard being connected to secondary drying chamber outlet are provided on body, plasterboard inlet, plasterboard exit are provided with sealing regulating.The utility model solves the problems, such as that drying machine leakproofness is poor in the prior art.
Description
Technical field
The utility model belongs to drying equipment technical field, is related to a kind of environmentally friendly gypsum board manufacture drying machine.
Background technique
Plasterboard is using building gypsum as a kind of material made of primary raw material.It is that one kind is light-weight, intensity is higher, thick
The construction material for spending the better performances such as relatively thin, easy to process and sound insulation insulation and fire prevention is the novel light of current development emphatically
One of lumber.Plasterboard be widely used in the various buildings such as house, office building, shop, hotel and industrial premises it is interior every
Wall, wall cladding boards (instead of floated coat), ceiling, abatvoix, ground layer plate and various decorative panels etc., plasterboard
Production could will finally come into operation by drying, not so can shorten its service life, currently used for plasterboard drying machine by
In need to remain for conveying device in advance and plasterboard passes through entrance, outlet, the leakproofness that will lead to drying machine is poor, to lead
Cause the drying effect of drying machine poor.
Utility model content
The utility model proposes a kind of environmentally friendly gypsum board manufacture drying machines, solve drying machine leakproofness in the prior art
Poor problem.
The technical solution of the utility model is achieved in that
A kind of environmental protection gypsum board manufacture drying machine, comprising:
Body is disposed with the first interconnected hothouse, secondary drying chamber in the body, and described first is dry
It is provided with plasterboard entrance on room, plasterboard outlet, the plasterboard inlet, the stone are provided in the secondary drying chamber
Cream plate exit is provided with sealing regulating, sliding rail is provided on the outer wall of the body, and the sliding rail is positioned at described
The top of plasterboard entrance and plasterboard outlet,
The sealing regulating includes for adjusting the plasterboard entrance height or the plasterboard outlet height
Sealing plate is fixedly connected with threaded rod at the top of the sealing plate, fixed plate, the threaded rod is provided at the top of the body
One end pass through the fixed plate, and the end is provided with nut.
As further technical solution, it is provided with and is used on the direction that the plasterboard entrance is exported to the plasterboard
The transmission device of plasterboard is conveyed, the transmission device sequentially passes through the plasterboard entrance, plasterboard outlet through institute
State body.
As further technical solution, the first air inlet being connected to first hothouse is provided on the body
Mouthful, first air inlet is provided with the first air-introduced machine, and first air inlet is communicated with guide duct, the guide duct connection
There are several the first discharge pipes, first discharge pipe is connected to first hothouse, the first discharge pipe air outlet
Height is identical as the height of the transmission device.
As further technical solution, the second air inlet being connected to the secondary drying chamber is provided on the body
Mouthful, second air inlet is provided with the second air-introduced machine, and second air-introduced machine is communicated with heater box, the heater box connection
There are the first air supply tube, the second air supply tube,
First air supply tube is communicated with the second discharge pipe, and second air supply tube is communicated with third discharge pipe, and described
The air outlet of two discharge pipes is located at the top of the plasterboard, and the air outlet of the third discharge pipe is located under the plasterboard
Side.
As further technical solution, be provided with several exhaust passages on the body, the exhaust passage with it is described
First hothouse or the secondary drying chamber are connected to, and are disposed with condensing unit, filter device in the exhaust passage.
As further technical solution, the condensing unit include the upper cold plate being arranged in the exhaust passage,
Lower cold plate,
The first space, the lower cold plate and the row are formed between the upper cold plate and the bottom of the exhaust passage
Second space is formed between the top in gas channel, is formed between the upper cold plate, the lower cold plate for being connected to described the
One space, the second space first passage,
The bottom of the exhaust passage is provided with the water outlet for condensed water outflow, and the water outlet, which is connected with, to catchment
Case.
As further technical solution, the bottom of the exhaust passage is provided with deflector, and the deflector is surrounded and set
Set the surrounding in the water outlet.
As further technical solution, the filter device includes the active carbon slab being arranged in the exhaust passage,
The activity carbon slab is arranged between the lower cold plate, the Vent passageway.
As further technical solution, the driving device is specially motor.
The utility model is using principle and has the beneficial effect that
1, the drying machine in the utility model is for the drying process in gypsum board manufacture, and the of connection is provided in body
One hothouse, secondary drying chamber are provided with plasterboard entrance, plasterboard outlet, plasterboard entrance and the first hothouse on body
Connection, plasterboard outlet is connected to secondary drying chamber, and the first hothouse, secondary drying chamber need one during drying
A relatively closed environment come the drying effect kept, therefore is provided with sealing and adjusts in plasterboard entrance, plasterboard exit
Regulating device, guarantees the leakproofness of dryer inner environment, thus ensure drying machine to the drying effect of plasterboard,
Sealing regulating includes sealing plate, and sealing plate is fixedly connected with screw rod, and one end of screw rod passes through fixed plate and sets
Be equipped with nut, fixed plate is fixed on the top of body, when needing to adjust the height of sealing plate, turn nut, screw rod will on
Lower movement realizes the height for adjusting sealing plate so that sealing plate be driven to move up and down, come adjust plasterboard entrance, plasterboard goes out
The height of mouth guarantees plasterboard entrance, the height of plasterboard outlet is able to satisfy the demand that the plasterboard of different-thickness passes through, and energy
The sealing performance for keeping dryer inner, solves the problems, such as that existing drying machine leakproofness is poor.
2, the transmission device in the utility model sequentially passes through plasterboard entrance, plasterboard outlet through body, transmission dress
It sets for transporting plasterboard, therefore the height of plasterboard entrance, plasterboard outlet need to meet transmission device and be located at transmission device
On plasterboard pass through simultaneously, the top of plasterboard, the lower section of transmission device kept between body sealing, to guarantee
The leakproofness of dryer inner.
3, the first hothouse in the utility model is provided in the first air inlet and draws for the predrying to plasterboard
Blower, when starting air-introduced machine, external air will form air-flow and pass sequentially through that guide duct, that the first discharge pipe enters to first is dry
Plasterboard is dried in dry interior, and outlet air just can be blown to plasterboard by the air outlet face transmission device of the first discharge pipe
On, to play the role of drying plaster boards.The air outlet of first discharge pipe is in wide-mouth shape, therefore can increase air-out area,
Drying effect is more preferable.
4, the secondary drying chamber in the utility model is connected to the second air inlet, and the second air inlet is provided with the second air inducing
Machine, the second air-introduced machine are communicated with heater box, therefore when starting the second air-introduced machine, outside air can be introduced into heater box, lead to
Air after crossing heater box heating can be respectively enterd to the first air supply tube, the second air supply tube, and the first air supply tube goes out by second
Air hose is connected to secondary drying chamber, and the second air supply tube is connected to by third discharge pipe with secondary drying chamber, and the second discharge pipe goes out
The upper surface of plasterboard is dried in wide-mouth type and the middle part of face plasterboard upper surface in air port, and third discharge pipe goes out
Air port is equally in wide-mouth type and the lower section for being located at transmission device, and transmission device is made of the arrangement of several deflector rolls, can stay between deflector roll
There is clearance space, therefore the outlet air of third discharge pipe can drying the lower surface of plasterboard by clearance space.Pass through
The mode that second discharge pipe, third discharge pipe are respectively dried the upper and lower surface of plasterboard, further ensures dry effect
Fruit avoids plasterboard and the occurrence of dry halfway occurs, to ensure that the production quality of plasterboard.
5, it is additionally provided with exhaust passage on the body in the utility model, being used for will be in the first hothouse, secondary drying chamber
Air discharge, the moisture evaporated on gypsum can be deposited by being discharged in air, and there are peculiar smell, it is therefore desirable to discharge air
It is discharged again after being handled.
It is disposed with condensing unit, filter device in exhaust passage, condensing unit includes upper cold plate, lower cold plate,
Moisture in discharge air is being condensed into water by will do it heat exchange when cold plate, to remove the major part in discharge air
Moisture, the water of condensation pass through water outlet again and drain into header tank, recycled.It is respectively provided on upper cold plate, lower cold plate
There is condensation pipe, the both ends of condensation pipe are connect with water tank, so as to realize the circulation of condensed water, guarantee condensation effect.
Upper cold plate, lower cold plate are setting up and down, can not only guarantee the circulation of air, but also can guarantee condensation effect.
It is discharged after the condensate moisture in air, can be again by active carbon slab, it is empty that active carbon slab can further adsorb discharge
Moisture and peculiar smell in gas guarantee the cleaning of discharge air.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of condensing unit in the utility model；
Fig. 3 is the structural schematic diagram of sealing regulating in the utility model；
In figure: 1- body, the first hothouse of 2-, the secondary drying chamber 3-, 4- plasterboard entrance, the outlet of 5- plasterboard, 6- are close
Envelope regulating device, 61- sealing plate, 62- threaded rod, 63- fixed plate, 64- nut, 7- sliding rail, 8- plasterboard, 9- transmission device,
The first air inlet of 10-, the first air-introduced machine of 11-, 12- guide duct, the first discharge pipe of 13-, the second air inlet of 14-, the second air inducing of 15-
Machine, 16- heater box, the first air supply tube of 17-, the second air supply tube of 18-, the second discharge pipe of 19-, 20- third discharge pipe, 21- exhaust
Channel, 22- condensing unit, the upper cold plate of 221-, cold plate under 222-, 23- filter device, 231- activity carbon slab, 24- first are empty
Between, 25- second space, 26- first passage, 27- water outlet, 28- header tank, 29- deflector.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figures 1 to 3, the utility model proposes a kind of environmentally friendly gypsum board manufacture drying machine, comprising:
Body 1 is disposed with the first interconnected hothouse 2, secondary drying chamber 3, the first hothouse 2 in body 1
On be provided with plasterboard entrance 4, plasterboard outlet 5 is provided in secondary drying chamber 3, at plasterboard entrance 4, plasterboard outlet 5
Place is provided with sealing regulating 6, sliding rail 7 is provided on the outer wall of body 1, and sliding rail 7 is located at plasterboard entrance 4 and gypsum
The top of plate outlet 5,
Sealing regulating 6 includes exporting the sealing plate 61 of 5 height for adjusting 4 height of plasterboard entrance or plasterboard,
The top of sealing plate 61 is fixedly connected with threaded rod 62, and the top of body 1 is provided with fixed plate 63, and one end of threaded rod 62 is worn
Fixed plate 63 is crossed, and the end is provided with nut 64.
Drying machine in the utility model is provided with the of connection for the drying process in gypsum board manufacture in body 1
One hothouse 2, secondary drying chamber 3 are provided with plasterboard entrance 4, plasterboard outlet 5, plasterboard entrance 4 and first on body 1
Hothouse 2 is connected to, and plasterboard outlet 5 is connected to secondary drying chamber 3, and the first hothouse 2, secondary drying chamber 3 are in dry mistake
A relatively closed environment is needed in journey, come the drying effect kept, therefore in plasterboard entrance 4, plasterboard outlet 5
Place is provided with sealing regulating, guarantees the leakproofness of dryer inner environment, to ensure drying of the drying machine to plasterboard
Effect,
Sealing regulating 6 includes sealing plate 61, and sealing plate 61 is fixedly connected with screw rod 62, and one end of screw rod 62 passes through solid
Fixed board 63 is simultaneously provided with nut 64, and fixed plate 63 is fixed on the top of body 1, when needing to adjust the height of sealing plate 61, twists
Dynamic nut 64, screw rod 62 will move up and down, so that sealing plate 61 be driven to move up and down, realize the height for adjusting sealing plate 61,
Come adjust plasterboard entrance 4, plasterboard outlet 5 height, guarantee plasterboard entrance 4, plasterboard outlet 5 height be able to satisfy
The demand that the plasterboard 8 of different-thickness passes through, and it is able to maintain the sealing performance of dryer inner, solve existing dry secret
The poor problem of envelope property.
Further, the transmission dress for conveying plasterboard 8 is provided on plasterboard entrance 4 to the direction of plasterboard outlet 5
9 are set, transmission device 9 sequentially passes through plasterboard entrance 4, plasterboard outlet 5 through body 1.
Transmission device 9 in the utility model sequentially passes through plasterboard entrance 4, plasterboard outlet 5 through body 1, transmission
Device 9 is for transporting plasterboard 8, therefore the height of plasterboard entrance 4, plasterboard outlet 5 need to meet transmission device 9 and be located at biography
It send the plasterboard 8 on device 9 while passing through, keep close between body in the top of plasterboard 8, the lower section of transmission device 9
Envelope, to guarantee the leakproofness of dryer inner.
Further, it is provided with the first air inlet 10 being connected to the first hothouse 2 on body 1, is set at the first air inlet 10
It is equipped with the first air-introduced machine 11, the first air inlet 10 is communicated with guide duct 12, and guide duct 12 is communicated with several the first discharge pipes 13,
First discharge pipe 13 is connected to the first hothouse 2, and the height of 13 air outlet of the first discharge pipe is identical as the height of transmission device 9.
The first hothouse 2 in the utility model is arranged at the first air inlet 10 for the predrying to plasterboard 8
There is air-introduced machine 11, when starting air-introduced machine 11, external air will form air-flow and pass sequentially through guide duct 12, the first discharge pipe 13
It enters in the first hothouse 2 and plasterboard 8 is dried, the air outlet face transmission device 9 of the first discharge pipe 13 just may be used
Outlet air to be blown on plasterboard 8, to play the role of drying plaster boards.The air outlet of first discharge pipe 13 is in wide-mouth shape,
Therefore it can increase air-out area, drying effect is more preferable.
Further, it is provided with the second air inlet 14 being connected to secondary drying chamber 3 on body 1, is set at the second air inlet 14
It is equipped with the second air-introduced machine 15, the second air-introduced machine 15 is communicated with heater box 16, and heater box 16 is communicated with the first air supply tube 17, second send
Air hose 18,
First air supply tube 17 is communicated with the second discharge pipe 19, and the second air supply tube 18 is communicated with third discharge pipe 20, and second goes out
The air outlet of air hose 19 is located at the top of plasterboard 8, and the air outlet of third discharge pipe 20 is located at the lower section of plasterboard 8.
Secondary drying chamber 3 in the utility model is connected to the second air inlet, is provided with the second air inducing at the second air inlet 14
Machine 15, the second air-introduced machine 15 are communicated with heater box 16, therefore when starting the second air-introduced machine 15, and outside air can be introduced into adding
Hot tank 16, the air after being heated by heater box 16 can be respectively enterd to the first air supply tube 17, the second air supply tube 18, and first send
Air hose 17 is connected to by the second discharge pipe 19 with secondary drying chamber 3, and the second air supply tube 18 is dry by third discharge pipe 20 and second
Dry room 3 is connected to, and the air outlet of the second discharge pipe 19 is in wide-mouth type and the middle part of 8 upper surface of face plasterboard, to plasterboard 8
Upper surface is dried, and the air outlet of third discharge pipe 20 is equally in wide-mouth type and the lower section for being located at transmission device 9, transmission device
9 are made of the arrangement of several deflector rolls, the spaced space of meeting between deflector roll, therefore the outlet air of third discharge pipe 20 can pass through interval sky
Between the lower surface of plasterboard 8 is dried.By the second discharge pipe 19, third discharge pipe 20 respectively to the upper of plasterboard 8
The mode that lower surface is dried, further ensures drying effect, avoids plasterboard 8 and dry halfway situation occurs
Occur, to ensure that the production quality of plasterboard 8.
Further, several exhaust passages 21 are provided on body 1, exhaust passage 21 and the first hothouse 2 or second are dry
Room 3 is connected to, and is disposed with condensing unit 22, filter device 23 in exhaust passage 21.
Further, condensing unit 22 includes upper cold plate 221, the lower cold plate 222 being arranged in exhaust passage 21,
The first space 24, lower cold plate 222 and exhaust passage are formed between upper cold plate 221 and the bottom of exhaust passage 21
Between 21 top formed second space 25, between upper cold plate 221, lower cold plate 222 formed for be connected to the first space 24,
The first passage 26 of second space 25,
The bottom of exhaust passage 21 is provided with the water outlet 27 for condensed water outflow, and water outlet 27 is connected with header tank
28。
Further, the bottom of exhaust passage 21 is provided with deflector 29, and deflector 29, which surrounds, is arranged in the four of water outlet 27
Week.
Further, filter device 23 includes the active carbon slab 231 being arranged in exhaust passage 21, and active carbon slab 231 is arranged
Between lower cold plate 222, the outlet of exhaust passage 21.
It is additionally provided with exhaust passage 21 on body in the utility model, is used for the first hothouse 2, secondary drying chamber 3
Interior air discharge, the moisture evaporated on plasterboard 8 can be had by being discharged in air, and there are peculiar smell, it is therefore desirable to discharge
Air discharges again after being handled.
Condensing unit 22, filter device 23 are disposed in exhaust passage 21, condensing unit 22 includes upper cold plate
221, lower cold plate 222, the moisture being discharged in air is being condensed into water by will do it heat exchange when cold plate, thus the row of removal
Most of moisture in air out, the water of condensation pass through water outlet 27 again and drain into header tank 28, recycled.Upper condensation
Condensation pipe is provided on plate 221, lower cold plate 222, the both ends of condensation pipe are connect with water tank, cold so as to realize
The circulation of condensate guarantees condensation effect.Upper cold plate 221, lower cold plate 222 are setting up and down, can both guarantee the circulation of air,
It can guarantee condensation effect again.
It is discharged after the condensate moisture in air, can be again by active carbon slab 231, active carbon slab 231 can be adsorbed further
Moisture and peculiar smell in air is discharged, guarantees the cleaning of discharge air.
Further, driving device is specially motor.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of environmental protection gypsum board manufacture drying machine, which is characterized in that including body (1), set gradually in the body (1)
There are interconnected the first hothouse (2), secondary drying chamber (3), is provided with plasterboard entrance on first hothouse (2)
(4), plasterboard outlet (5) is provided on the secondary drying chamber (3), at the plasterboard entrance (4), plasterboard outlet
(5) it is provided at sealing regulating (6), is provided with sliding rail (7) on the outer wall of the body (1), and the sliding rail (7) position
The top of (5) is exported in the plasterboard entrance (4) and the plasterboard,
The sealing regulating (6) includes high for adjusting plasterboard entrance (4) height or plasterboard outlet (5)
The sealing plate (61) of degree is fixedly connected with threaded rod (62) at the top of the sealing plate (61), the top setting of the body (1)
Have fixed plate (63), one end of the threaded rod (62) passes through the fixed plate (63), and the end is provided with nut (64).
2. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 1, which is characterized in that the plasterboard entrance
(4) transmission device (9) being provided on the direction of (5) for conveying plasterboard (8), the transmission dress are exported to the plasterboard
It sets (9) and sequentially passes through the plasterboard entrance (4), plasterboard outlet (5) through the body (1).
3. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 2, which is characterized in that on the body (1)
It is provided with the first air inlet (10) being connected to first hothouse (2), is provided with first at first air inlet (10)
Air-introduced machine (11), first air inlet (10) are communicated with guide duct (12), the guide duct (12) be communicated with several first
Discharge pipe (13), first discharge pipe (13) are connected to first hothouse (2), the first discharge pipe (13) air outlet
Height it is identical as the height of the transmission device (9).
4. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 3, which is characterized in that on the body (1)
It is provided with the second air inlet (14) being connected to the secondary drying chamber (3), is provided with second at second air inlet (14)
Air-introduced machine (15), second air-introduced machine (15) are communicated with heater box (16), and the heater box (16) is communicated with the first air supply tube
(17), the second air supply tube (18),
First air supply tube (17) is communicated with the second discharge pipe (19), and second air supply tube (18) is communicated with third discharge pipe
(20), the air outlet of second discharge pipe (19) is located at the top of the plasterboard (8), and the third discharge pipe (20) goes out
Air port is located at the lower section of the plasterboard (8).
5. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 1, which is characterized in that on the body (1)
It is provided with several exhaust passages (21), the exhaust passage (21) and first hothouse (2) or the secondary drying chamber (3)
Connection, the exhaust passage (21) is interior to be disposed with condensing unit (22), filter device (23).
6. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 5, which is characterized in that the condensing unit
It (22) include upper cold plate (221), the lower cold plate (222) being arranged in the exhaust passage (21),
It is formed between the upper cold plate (221) and the bottom of the exhaust passage (21) the first space (24), the lower condensation
Between plate (222) and the top of the exhaust passage (21) formed second space (25), the upper cold plate (221), it is described under
The first passage (26) for being connected to first space (24), the second space (25) is formed between cold plate (222),
The bottom of the exhaust passage (21) is provided with the water outlet (27) for condensed water outflow, water outlet (27) connection
There are header tank (28).
7. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 6, which is characterized in that the exhaust passage
(21) bottom is provided with deflector (29), surrounding of the deflector (29) around setting in the water outlet (27).
8. a kind of environmentally friendly gypsum board manufacture drying machine according to claim 6, which is characterized in that the filter device
It (23) include the active carbon slab (231) being arranged in the exhaust passage (21), the activity carbon slab (231) is arranged under described
Between cold plate (222), the exhaust passage (21) outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047579.3U CN209399713U (en) | 2018-12-06 | 2018-12-06 | A kind of environmental protection gypsum board manufacture drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822047579.3U CN209399713U (en) | 2018-12-06 | 2018-12-06 | A kind of environmental protection gypsum board manufacture drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209399713U true CN209399713U (en) | 2019-09-17 |
Family
ID=67881926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822047579.3U Expired - Fee Related CN209399713U (en) | 2018-12-06 | 2018-12-06 | A kind of environmental protection gypsum board manufacture drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209399713U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678327A (en) * | 2020-06-24 | 2020-09-18 | 西安外事学院 | Drying device for electronic product production |
| CN113028802A (en) * | 2021-04-13 | 2021-06-25 | 泰山石膏(重庆)有限公司 | Gypsum board drying system |
-
2018
- 2018-12-06 CN CN201822047579.3U patent/CN209399713U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678327A (en) * | 2020-06-24 | 2020-09-18 | 西安外事学院 | Drying device for electronic product production |
| CN113028802A (en) * | 2021-04-13 | 2021-06-25 | 泰山石膏(重庆)有限公司 | Gypsum board drying system |
| CN113028802B (en) * | 2021-04-13 | 2022-07-19 | 泰山石膏(重庆)有限公司 | Gypsum board drying system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190917 Termination date: 20201206 |