CN112665357A - Gypsum board drying device and drying method thereof - Google Patents
Gypsum board drying device and drying method thereof Download PDFInfo
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- CN112665357A CN112665357A CN202011458584.9A CN202011458584A CN112665357A CN 112665357 A CN112665357 A CN 112665357A CN 202011458584 A CN202011458584 A CN 202011458584A CN 112665357 A CN112665357 A CN 112665357A
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Abstract
The embodiment of the invention discloses a gypsum board drying device, which comprises a dryer, a first drying area, a second drying area, a first drying area and a second drying area, wherein the dryer is provided with the first drying area and the second drying area; the first water content sensing element is arranged between the first drying area and the second drying area; the second water content sensing element is arranged at the rear end of the second drying area; the first temperature sensing element and the second temperature sensing element are respectively arranged in the first drying area and the second drying area; and the control device is connected with the first moisture content sensing element, the second moisture content sensing element and the first temperature sensing element and the second temperature sensing element and can respectively determine pre-adjusted drying parameters of the first drying area and the second drying area.
Description
Technical Field
The embodiment of the invention relates to the field of gypsum board drying, and particularly relates to a gypsum board drying device and a drying method thereof.
Background
The gypsum board product has become the dominant force of internal decoration materials at present, the annual output is also continuously increased, and how to further improve the quality of the gypsum board also becomes the main problem in the industry, the quality of the gypsum board mainly depends on the moisture content of the gypsum board, the finished product is inspected in the past, the inspection time of the mode is delayed, and the quality problem cannot be found in time.
Disclosure of Invention
The embodiment of the invention also provides a gypsum board drying device and a gypsum board drying method, which can greatly improve the online production quality of gypsum boards.
The embodiment of the invention provides a gypsum board drying device, which comprises: a dryer comprising a first drying zone and a second drying zone; the first water content sensing element is arranged between the first drying area and the second drying area; the second water content sensing element is arranged at the rear end of the second drying area; the first temperature sensing element and the second temperature sensing element are respectively arranged in the first drying area and the second drying area; and the control device is connected with the first water content sensing element, the second water content sensing element and the first temperature sensing element and the second temperature sensing element, and can determine preset drying parameters of the first drying area and the second drying area according to the water content of the gypsum board sensed by the first water content sensing element and the second water content sensing element and the ambient temperature in the dryer sensed by the first temperature sensing element and the second temperature sensing element.
The embodiment of the invention provides a gypsum board drying method, which comprises the following steps: detecting the ambient temperature of the first drying zone and the second drying zone; when the gypsum board enters a space between a first drying area and a second drying area of a dryer, detecting the water content data of the gypsum board to obtain first water content data; when the gypsum board leaves the second drying area, detecting the water content data of the gypsum board to obtain second water content data; and determining preset drying parameters of the dryer according to the obtained first moisture content data and second moisture content data and the detected ambient temperatures of the first drying area and the second drying area.
Compared with the prior art, the embodiment of the invention has the advantages that the water content sensing elements are respectively arranged between the first drying area and the second drying area of the dryer and at the rear end of the second drying area, so that the water content of the gypsum board in the drying process can be detected, the drying parameter adjustment of the dryer can be carried out, the online production quality of the gypsum board can be greatly improved, and the adjustment precision is high.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
FIG. 1 is a schematic view of a gypsum board drying apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of a gypsum board drying method according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments of the present invention may be arbitrarily combined with each other without conflict.
As shown in fig. 1, an embodiment of the present invention provides a gypsum board drying apparatus including a dryer 10 for drying gypsum board, the dryer 10 including an inlet end 10a and an outlet end 10b, a first drying zone 11 and a second drying zone 12 between the inlet end 10a and the outlet end 10 b. The gypsum board enters the dryer from the inlet end 10a for drying and is dried at the outlet end 10b to complete the output. In this embodiment, the first drying zone 11 is a low-temperature drying zone, and the drying temperature range is below 200 ℃; the second drying zone 12 is a high temperature drying zone, and the drying temperature ranges from 200 to 300 degrees. In other embodiments, the drying temperatures of the first drying zone 11 and the second drying zone 12 may be set according to actual conditions.
When the dryer 10 in the embodiment of the present invention is used for drying, hot steam is generally used as a heat source, the hot-air gypsum plasterboard is continuously subjected to heat exchange with longitudinally flowing hot air while slowly advancing in the dryer, the board absorbs heat, the temperature is increased, and free moisture in the board is slowly evaporated.
As shown in fig. 1, the drying apparatus further includes moisture content sensing elements 1, 2, temperature sensing elements 3, 4, and a control device. The water content sensing elements 1, 2 are used to detect the water content of the gypsum board. The temperature sensing elements 3, 4 are used to detect the ambient temperature inside the dryer 10. The control means is connected to the moisture content sensing elements 1, 2 and the temperature sensing elements 3, 4 and is capable of determining pre-adjusted drying parameters of the dryer 10 based on moisture content data of the gypsum board sensed by the moisture content sensing elements 1, 2 and ambient temperature data in the dryer 10 sensed by the temperature sensing elements 3, 4. Wherein, the drying parameters comprise drying temperature, time length, time interval and other parameters. Illustratively, the control means determines a moisture content profile of the gypsum board based on moisture content data of the gypsum board sensed by the moisture content sensing elements 1, 2 and ambient temperature data within the dryer 10 sensed by the temperature sensing elements 3, 4, and determines pre-adjusted drying parameters of the dryer 10 based on the determined moisture content profile of the gypsum board.
As shown in fig. 1, the moisture content sensing elements 1, 2 comprise a first moisture content sensing element 1 disposed between a first drying zone 11 and a second drying zone 12. The first moisture content sensing element 1 is a high temperature resistant moisture content sensing element. Between the first drying section 11 and the second drying section 12 described in this embodiment may be a first moisture content sensing element 1 provided in the first drying section 11, or a first moisture content sensing element 1 provided in the second drying section 12, or a first moisture content sensing element 1 provided in a passage between the first drying section 11 and the second drying section 12. Generally, it is disposed at the end of the first drying zone 11, or at the front end of the second drying zone 12, or in the passage between the first drying zone 11 and the second drying zone 12, so that the accuracy of parameter determination can be improved.
As shown in fig. 1, the moisture content sensing elements 1, 2 further comprise a second moisture content sensing element 2 disposed at the rear end of the second drying zone 12. The second moisture content sensing element 2 is provided at the outlet end 10b of the dryer 10 in this embodiment. The second moisture content sensing element 2 is a non-refractory moisture content sensing element and is typically located at the exit end 10b at a location where the temperature range of the gypsum board after cooling is below 80 degrees.
According to the embodiment of the invention, the first water content sensing element 1 is arranged between the first drying area 11 and the second drying area 12 in the dryer 10, and the second water content sensing element 2 is arranged at the rear end of the second drying area 12 of the dryer 1, so that the water content of the gypsum board can be detected in a segmented manner, the drying parameters of the dryer 10 can be more accurately adjusted by combining the water content data of each stage, and meanwhile, the position of the dryer 10, which needs to adjust the drying parameters, can be more accurately and timely determined.
According to the embodiment of the invention, the second water content sensing element 2 is arranged at the outlet end 10b, so that the water content data of the finished gypsum board can be detected, and the drying parameters of the dryer 10 can be more accurately adjusted, meanwhile, the second water content sensing element 2 can be made of non-high-temperature-resistant materials, and the cost is low.
First water content sensing element 1 and second water content sensing element 2 are the radio frequency sensing element in this embodiment, set to the water content that can detect the cross-section one or more positions of gypsum board, detect the precision height.
As shown in fig. 1, the temperature sensing elements 3 and 4 include a first temperature sensing element 3 provided in the first drying zone 11 and a second temperature sensing element 4 provided in the second drying zone 12. In the present embodiment, the first temperature sensing element 3 and the second temperature sensing element 4 employ thermocouples.
As shown in fig. 1, the control means comprises digital centralized controllers 5, 6, 7 and PID control systems 14, 15. The digital centralized controllers 5, 6, 7 comprise a first digital centralized controller 5, a second digital centralized controller 6, and a third digital centralized controller 7. First digital centralized controller 5 is connected with first water content sensing element 1 for the gypsum board water content data that first water content sensing element 1 detected are received and water content analysis is carried out. The second digital centralized controller 6 is connected with the second water content sensing element 2 and is used for receiving the gypsum board water content data detected by the second water content sensing element 2 and analyzing the water content. The third digital centralized controller 7 is connected to the first digital centralized controller 5 and the second digital centralized controller 6, and is configured to receive feedback data of the first digital centralized controller 5 and the second digital centralized controller 6.
The PID control systems 14, 15 include a first PID control system 14 and a second PID control system 15. The first PID control system 14 is connected with the first temperature sensing element 4 and the third digital controller 7, and the second PID control system 15 is connected with the second temperature sensing element 3 and the third digital centralized controller 7.
In operation, the first digital centralized controller 5 receives the moisture content data of the gypsum board between the first drying zone 11 and the second drying zone 12 as detected by the first moisture content sensing element 1 and transmits a feed forward regulation factor to the third data concentrator controller 7. The second digital centralized controller 6 receives the gypsum board function data detected by the second water content sensing element 2 and transmits a backward feedback signal to the third data concentrator controller 7. The third data concentrator controller 7 receives feedback signals respectively transmitted by the first digital centralized controller 5 and the second digital centralized controller 6, and through data processing, the feedback signals are set to the first PID control system 14 and the second PID control system 15 through remote ends, the first PID control system 14 completes the drying parameter adjustment of the first drying area 11, and the second PID control system 15 completes the drying parameter adjustment of the second drying area 12. Specifically, as shown in fig. 1, the first feedback element 8 transmits forward feedback data for feeding back the current moisture condition of the gypsum board in the first drying zone 11 to the third data concentrator controller 7; the second feedback element 9 transmits backward feedback data for feeding back the moisture content of the finished gypsum board to the third data concentrator controller 7. The third data concentrator controller 7 integrates the pre-and post-data and automatically controls the adjustment of the parameters of the first and second drying zones 11, 12 by means of the first and second PID control systems 14, 15.
According to the embodiment of the invention, the water content sensing elements 1 and 2 are arranged on the dryer 10, so that the water content of the gypsum board in the drying process can be detected in real time, and the drying parameter adjustment of the dryer can be carried out in real time, so that the online production quality of the gypsum board can be greatly improved.
As shown in fig. 2, an embodiment of the present invention further provides a gypsum board drying method, including the following operations:
s1, detecting the ambient temperature of the first drying area 11 and the second drying area 12;
s2, when the gypsum board enters between the first drying area 11 and the second drying area 12 of the dryer 10, detecting the water content data of the gypsum board to obtain first water content data;
s3, when the gypsum board leaves the second drying area 12, detecting the water content data of the gypsum board to obtain second water content data;
and S4, determining preset drying parameters of the dryer according to the obtained first moisture content data and second moisture content data and the detected ambient temperatures of the first drying area 11 and the second drying area 12.
In an exemplary embodiment, the drying parameters include drying temperature, length of time, time interval, and the like.
In an exemplary embodiment, as shown in fig. 1, the first temperature sensing element 3 and the second temperature sensing element 4 are used to detect and transmit ambient temperature data of the first drying zone 11 and the second drying zone 12 of the dryer 10 to the control device, respectively. Adopt first water content sensing element 1 to gather the first water content data transmission of gypsum board to controlling means. Adopt second water content sensing element 2 to gather the second water content data of gypsum board and transmit to controlling means. The control means determines pre-adjusted drying parameters for the dryer based on the received first and second moisture content data for the gypsum board and the ambient temperature data for the first and second drying sections 11, 12.
As shown in fig. 1, the control means comprises digital centralized controllers 5, 6, 7 and PID control systems 14, 15. The digital centralized controllers 5, 6, 7 comprise a first digital centralized controller 5, a second digital centralized controller 6, and a third digital centralized controller 7. First digital centralized controller 5 is connected with first water content sensing element 1 for the gypsum board water content data that first water content sensing element 1 detected are received and water content analysis is carried out. The second digital centralized controller 6 is connected with the second water content sensing element 2 and is used for receiving the gypsum board water content data detected by the second water content sensing element 2 and analyzing the water content. The third digital centralized controller 7 is connected to the first digital centralized controller 5 and the second digital centralized controller 6, and is configured to receive feedback data of the first digital centralized controller 5 and the second digital centralized controller 6. The PID control systems 14, 15 include a first PID control system 14 and a second PID control system 15. The first PID control system 14 is connected with the first temperature sensing element 4 and the third digital controller 7, and the second PID control system 15 is connected with the second temperature sensing element 3 and the third digital centralized controller 7. For the specific detection process, reference may be made to the above embodiments, which are not described herein again.
In an exemplary embodiment, determining pre-adjusted drying parameters of dryer 1 based on the obtained first and second moisture content data and the detected ambient temperatures of first and second drying zones 11 and 12 as described in operation S4 includes:
based on the first and second moisture content data obtained and the sensed ambient temperatures of the first and second drying sections 11, 12, a moisture content profile of the gypsum board is obtained, and pre-adjusted drying parameters of the dryer 10 are determined based on the moisture content profile of the gypsum board obtained. In one example, a gypsum board drying model, such as a neural network-based model, may be trained with the sensed first and second moisture content data, and the ambient temperature of first drying zone 11 and the ambient temperature of second drying zone 12 as input parameters for the model, with the pre-adjusted drying parameters as output parameters for the model, and with a set of input and output parameters, if adjusted such that the moisture content of the gypsum board after drying is satisfactory, the set of input and output parameters are successful positive samples, and vice versa negative samples. The model training is carried out by collecting samples in production, and the current input parameters can be input into the model to obtain preset drying parameters after the set success rate is reached. In another example, when the temperature and moisture content do not vary much, a plurality of records including the first moisture content data, the second moisture content data, the ambient temperature of the first drying section 11, the ambient temperature of the second drying section 12, and the pre-adjusted drying parameters may be simply established, the record that the moisture content of the dried gypsum board meets the requirements is stored as a successful record, and in subsequent production, a closest successful record is found from the table based on the current first moisture content data, the second moisture content data, the ambient temperature of the first drying section, and the ambient temperature of the second drying section, and the pre-adjusted drying parameters in the successful record are used as the current pre-adjusted drying parameters. And so on.
In an exemplary embodiment, operation S4 is further followed by automatically or manually adjusting the drying parameters of the dryer based on the pre-adjusted drying parameters of dryer 10.
The operation S1 may be performed during any operation of the operations S2 and S3, which is not limited herein.
According to the embodiment of the invention, the water content of the gypsum board between the first drying area 11 and the second drying area 12 and the water content of the gypsum board at the rear end of the second drying area 12 are detected, so that the water content of the gypsum board in the drying process can be detected in real time, the drying parameters of the dryer 10 are determined and adjusted, and real-time adjustment can be realized.
According to the embodiment of the invention, the water content of the gypsum board in the designated areas of the drying area is detected, so that the water content of the gypsum board can be detected in a segmented manner, the drying parameters of the dryer can be adjusted more accurately and timely by combining the water content data of each stage, and meanwhile, the position of the dryer, which needs to adjust the drying parameters, can be determined more accurately and timely.
In the description of the embodiments of the present invention, the term "plurality" means two or more. In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure ", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the structures referred to have specific orientations, are configured and operated in specific orientations, and thus, are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A gypsum board drying apparatus, comprising:
a dryer comprising a first drying zone and a second drying zone;
the first water content sensing element is arranged between the first drying area and the second drying area; the second water content sensing element is arranged at the rear end of the second drying area;
the first temperature sensing element and the second temperature sensing element are respectively arranged in the first drying area and the second drying area;
and the control device is connected with the first water content sensing element, the second water content sensing element and the first temperature sensing element and the second temperature sensing element, and can respectively determine preset drying parameters of the first drying area and the second drying area according to the water content of the gypsum board sensed by the first water content sensing element and the second water content sensing element and the ambient temperature in the dryer sensed by the first temperature sensing element and the second temperature sensing element.
2. The gypsum board drying apparatus of claim 1, wherein: the first moisture content sensing element is disposed at a distal end of the first drying zone or at a front end of the second drying zone.
3. The gypsum board drying apparatus of claim 1, wherein: the second water content sensing element is arranged at the outlet end of the dryer.
4. A gypsum board drying apparatus according to claim 3, wherein: the second moisture content sensing element is located at the dryer outlet end and is located at a position having a temperature range below 80 degrees.
5. The gypsum board drying apparatus of claim 1, wherein: the drying temperature range of the first drying zone is lower than 200 ℃.
6. The gypsum board drying apparatus of claim 1, wherein: the drying temperature of the second drying zone ranges between 200 and 300 degrees.
7. A gypsum board drying apparatus according to any one of claims 1 to 6, wherein: first water content sensing element and second water content sensing element are radio frequency sensing element, set to the water content that can detect the cross-section of gypsum board.
8. A gypsum board drying apparatus according to any one of claims 1 to 6, wherein: the control device comprises a digital centralized controller, wherein the digital centralized controller comprises a first digital centralized controller connected with the first water content sensing element, a second digital centralized controller connected with the second water content sensing element, and a third digital centralized controller connected with the first digital centralized controller and the second digital centralized controller.
9. The gypsum board drying apparatus of claim 8, wherein: the control device further comprises a PID control system connected with the digital integrated controller, wherein the PID control system comprises a first PID control system connected with the first temperature sensing element and the third digital controller, and a second PID control system connected with the second temperature sensing element and the third digital integrated controller.
10. A method of drying gypsum board, the method comprising:
detecting the ambient temperature of the first drying zone and the second drying zone;
when the gypsum board enters a space between a first drying area and a second drying area of a dryer, detecting the water content data of the gypsum board to obtain first water content data;
when the gypsum board leaves the second drying area, detecting the water content data of the gypsum board to obtain second water content data;
and determining preset drying parameters of the dryer according to the obtained first moisture content data and second moisture content data and the detected ambient temperatures of the first drying area and the second drying area.
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| CN202011458584.9A CN112665357A (en) | 2020-12-10 | 2020-12-10 | Gypsum board drying device and drying method thereof |
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| CN202011458584.9A CN112665357A (en) | 2020-12-10 | 2020-12-10 | Gypsum board drying device and drying method thereof |
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| CN114794517A (en) * | 2022-03-29 | 2022-07-29 | 云南昆船烟草设备有限公司 | Tobacco flake redrying and drying moisture segmented detection equipment and control method |
| CN115542862A (en) * | 2022-11-04 | 2022-12-30 | 日照鼎立钢构股份有限公司 | Drying scheme decision method and system for improving freeze-drying quality of fruits and vegetables |
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Application publication date: 20210416 |