A dryer control device for preventing the edges of gypsum board from being burned
By designing protective plates and control devices in the dryer and adjusting the drying temperature and air volume distribution, the problem of overfire on the edges of paper gypsum board is solved, and the drying efficiency and product quality are improved.
Patent Information
- Application Number
- CN202211650948.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-12-21
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2042-12-21
AI Technical Summary
In the prior art, due to uneven air volume distribution of paper-surface gypsum board in the dryer, the side of the semi-finished paper-surface gypsum board is prone to overfire, resulting in batches of waste.
A dryer control device is designed, including a protective plate, a drying device and a controller, which prevents overfire of the edges of the paper gypsum board by adjusting the drying temperature and air volume distribution. The device accurately controls the direction and distribution of high-temperature airflow through nozzles, deflectors and height adjustment components to ensure uniform drying of the edges.
It effectively avoids overfire on the edges of paper gypsum board, improves drying efficiency, reduces the waste of high-temperature steam, reduces the generation of batch waste, and ensures product quality.
Smart Images
Figure CN115900294B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of plate processing, and in particular to a dryer control device for preventing edges of paper-faced gypsum boards from being burned. Background Art
[0002] Gypsum board is a board made of building gypsum as the main raw material, with appropriate amount of additives and fiber as the board core, and special paperboard as the surface. It is a building material with light weight, high strength, thin thickness, easy processing, good sound insulation, heat insulation and fire resistance, and is one of the new lightweight boards that are currently being developed. It is now widely used in various buildings such as residences, office buildings, shops, hotels and industrial plants, such as interior partitions, wall coverings (instead of wall plastering), ceilings, sound-absorbing panels, ground base boards and various decorative panels. It is not suitable for indoor installation in bathrooms or kitchens.
[0003] After the gypsum board is produced, it will contain a lot of moisture, so it is dried using a gypsum board drying device, otherwise it will seriously affect the quality of the finished product and the use effect of the gypsum board. In the prior art, high-temperature airflow is used to evaporate the moisture in the gypsum board and dry it. However, during the drying process of the semi-finished gypsum board in the dryer, the air volume distribution of the air duct outside the dryer is uneven and difficult to adjust. The edge of the semi-finished gypsum board is a wedge-shaped edge, which is easy to cause the edge of the gypsum board to burn. The burning phenomenon is concentrated in the edge area of the gypsum board, resulting in batches of waste. Summary of the invention
[0004] The invention provides a dryer control device for preventing the edges of gypsum boards from being over-burned, which can adjust the drying temperature of the dryer and the air volume distribution of the edges of the semi-finished gypsum boards in the dryer to prevent the edges of the gypsum boards from being over-burned.
[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a dryer control device for preventing the edge of a gypsum board from being burned, comprising a drying chamber and a conveying roller passing through the drying chamber, and further comprising:
[0006] Protective plates, the protective plates are fixed on both sides of the conveying roller, and the protective plates are used to prevent the edges of the gypsum board from being burned;
[0007] A drying device, the drying device is used to dry the gypsum board;
[0008] A controller, the controller being used to determine a temperature range of a drying temperature based on the material of the gypsum board;
[0009] Used to determine the drying temperatures of different drying areas based on the specifications of the gypsum board;
[0010] Used to determine the height and drying area of the drying device based on the specifications of the gypsum board.
[0011] In one of the embodiments, the drying device includes a plurality of nozzles, a flow guide member and a guide plate. The flow guide member is used to guide the direction of the high-temperature airflow ejected from the nozzle, and the flow guide member is fixed on the guide plate.
[0012] In one of the embodiments, it further comprises a height adjustment component fixed on the drying chamber; the height adjustment component is used to control the distance between the guide plate and the gypsum board.
[0013] In one embodiment, the step of determining the drying temperatures of different drying areas based on the specifications of the gypsum board includes:
[0014] Setting the drying temperatures of different drying areas based on the relationship between the actual area of the gypsum board and the preset area;
[0015] The drying temperatures of different drying areas are corrected based on the relationship between the actual thickness of the gypsum board and the preset thickness.
[0016] In one embodiment, the method for determining the height and drying area of the drying device based on the specifications of the gypsum board includes:
[0017] Setting a drying area of the drying device based on a relationship between an actual area of the gypsum board and a preset area;
[0018] The height of the drying device is set based on the relationship between the actual thickness of the gypsum board and the preset thickness.
[0019] In one of the embodiments, after the drying area of the drying device is set based on the relationship between the actual area of the gypsum board and the preset area, the controller determines the position code of the nozzle that needs to be turned on based on the set drying area of the drying device, and turns on the nozzle.
[0020] In one embodiment, the protective plate is in the shape of a truncated pyramid, and a groove is formed on the top of the truncated pyramid.
[0021] In one embodiment, the protective plate is a hollow mesh plate.
[0022] In one of the embodiments, the mesh size of the hollow mesh plate decreases from the top surface to the lower top surface of the truncated pyramid-shaped protective plate.
[0023] In one of the embodiments, a drainage groove is provided on the outer wall of the protective plate.
[0024] The technical effect of the present invention is as follows: by accurately determining the temperature range, drying temperature, and drying area of the drying temperature, high-temperature steam can be saved and the drying efficiency can be improved. By fixing the protective plates 3 on both sides of the conveying roller 2, the edges of the semi-finished gypsum board 5 can be prevented from being overfired, causing the edge areas of the gypsum board 5 to be of substandard quality and produce batches of waste products. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0026] Figure 1 is a schematic diagram of a dryer control device for preventing the edges of a gypsum board from being burned due to fire provided by an embodiment of the present invention;
[0027] Figure 2 is a flow chart of a dryer controlling drying provided by an embodiment of the present invention;
[0028] Figure 3 is a top view of a drying device provided by an embodiment of the present invention;
[0029] Figure 4 is a cross-sectional view of a protective plate provided by an embodiment of the present invention;
[0030] Figure 5 is a left side view of a protective plate provided by an embodiment of the present invention;
[0031] Among them, 1. Drying chamber; 2. Conveying roller; 3. Protective plate; 31. Groove; 32. Drainage trough; 4. Drying device; 41. Nozzle; 42. Drainage piece; 43. Guide plate; 5. Gypsum board; 6. Height adjustment component. DETAILED DESCRIPTION
[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0033] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.
[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0036] The types of gypsum board 5 include ordinary gypsum board 5, water-resistant gypsum board 5, fire-resistant gypsum board 5 and moisture-resistant gypsum board 5; the specifications of gypsum board 5 are: the length of gypsum board 5 is 1500mm, 1800mm, 2100mm, 2400mm, 2440mm, 2700mm, 3000mm, 3300mm, 3600mm and 3660mm. The width of gypsum board 5 is 600mm, 900mm, 1200mm and 1220mm. The thickness of gypsum board 5 is 9.5mm, 12mm, 15mm, 18mm, 21mm and 25mm. The commonly used ones are boards with a length of 3000mm, 2400mm and 2000mm, a width of 1200mm and a thickness of 9.5mm and 12mm. When the semi-finished gypsum boards 5 of different materials and specifications are dried, the air volume distribution of the air duct outside the dryer is uneven and difficult to adjust. The edges of the semi-finished gypsum boards 5 are wedge-shaped edges, which makes it easy for the edges of the gypsum boards 5 to be burned. The burning phenomenon is concentrated in the edge areas of the gypsum boards 5, resulting in batches of waste.
[0037] like Figure 1-5 As shown, this embodiment discloses a dryer control device for preventing the edge of a gypsum board 5 from being burned, comprising a drying chamber 1 and a conveying roller 2 passing through the drying chamber 1, and further comprising:
[0038] Protection plates 3, the protection plates 3 are fixed on both sides of the conveying roller 2, and the protection plates 3 are used to prevent the edges of the paper-faced gypsum board 5 from being burned;
[0039] A drying device 4, the drying device 4 is used to dry the gypsum board 5;
[0040] A controller, the controller being used to:
[0041] Step S1, determining a temperature range of a drying temperature based on the material of the gypsum board 5;
[0042] Step S2, determining the drying temperatures of different drying areas based on the specifications of the gypsum board 5;
[0043] Step S3, determining the height and drying area of the drying device 4 based on the specifications of the paper-faced gypsum 5.
[0044] It can be understood that in the above embodiment, by accurately determining the temperature range, drying temperature, and drying area of the drying temperature, high-temperature steam is saved and the drying efficiency is improved. By fixing the protective plates 3 on both sides of the conveying roller 2, the edges of the semi-finished gypsum board 5 are prevented from being overburned, causing the edge areas of the gypsum board 5 to fail to meet the quality standards and produce batches of waste products.
[0045] like Figure 1 , Figure 3 As shown, in some specific embodiments, the drying device 4 includes a plurality of nozzles 41 , a guide member 42 and a guide plate 43 , the guide member 42 is used to guide the direction of the high-temperature airflow ejected from the nozzle 41 , and the guide member 42 is fixed on the guide plate 43 .
[0046] Specifically, the guide member 42 can be trumpet-shaped, with a guide groove opened circumferentially on the inner wall, the guide plate 43 is square, the opening expansion direction of the guide member 42 is aligned with the gypsum board 5, the opening contraction direction of the guide member 42 is fixed on the guide plate 43, and the nozzle 41 is fixed in the guide member 42.
[0047] It can be understood that in the above embodiment, the high-temperature airflow sprayed from the nozzle 41 passes through the guide member 42 and the guide groove on the guide member 42, and evenly spreads the high-temperature airflow to the gypsum board 5, so as to realize the spray drying treatment of the entire gypsum board 5, which can effectively improve the drying process and effect of the gypsum board 5 to a certain extent, and ensure the stable development of the production of the gypsum board 5.
[0048] like Figure 1 As shown, in some specific embodiments, a height adjustment component 6 is further included, which is fixed on the drying chamber 1 ; the height adjustment component 6 is used to control the distance between the guide plate 43 and the gypsum board 5 .
[0049] Specifically, the height adjustment component 6 can be a component that can move the guide plate 43 up and down, such as a lifting platform.
[0050] It can be understood that in the above embodiment, by adjusting the distance between the guide plate 43 and the gypsum board 5, it is avoided that the high-temperature airflow is wasted due to the distance being too far, and it is avoided that the high-temperature airflow evaporates the moisture in the gypsum board 5 due to the distance being too close, resulting in uneven drying or over-drying of the side of the gypsum board 5 facing the high-temperature airflow.
[0051] In some specific embodiments, in step S2, the drying temperatures of different drying areas are determined based on the specifications of the gypsum board 5, including:
[0052] Step S21, setting the drying temperatures of different drying areas based on the relationship between the actual area of the gypsum board 5 and the preset area;
[0053] Step S22, correcting the drying temperatures of different drying areas based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness.
[0054] Specifically, the drying area includes a first drying area, a second drying area and a third drying area, and the drying temperature ranges of different drying areas are different.
[0055] For the first drying zone, the selected drying temperature includes:
[0056] Preset area matrix A, set A(A1, A2, A3, A4), where A1 is the first preset area, A2 is the second preset area, A3 is the third actual area, A4 is the fourth preset area, and A1 < A2 < A3 < A4;
[0057] Preset drying temperature array B, set B (B1, B2, B3, B4), where B1 is the first preset drying temperature, B2 is the second drying temperature, B3 is the third drying temperature, and B4 is the fourth drying temperature;
[0058] The actual area of the gypsum board 5 is obtained, and the drying temperature of the first drying area is set based on the relationship between the actual area of the gypsum board 5 and the preset area, which is specifically:
[0059] When A=A1, the first preset drying temperature B1 is set as drying temperature B;
[0060] When A=A2, the second preset drying temperature B2 is set as drying temperature B;
[0061] When A=A3, the third preset drying temperature B3 is set as drying temperature B;
[0062] When A=A4, the fourth preset drying temperature B4 is set as the drying temperature B.
[0063] For the first drying zone, the modified drying temperature includes:
[0064] A preset thickness matrix D0 is provided in advance. For the preset thickness matrix D0, D0(D1, D2, D3, D4) is set, wherein D1 is a first preset thickness, D2 is a second preset thickness, D3 is a third preset thickness, D4 is a fourth preset thickness, and D1<D2<D3<D4;
[0065] A preset correction coefficient matrix ai is provided in advance. For the preset correction coefficient matrix ai, ai(a1, a2, a3, a4) is set, wherein a1 is a first preset correction coefficient, a2 is a second preset correction coefficient, a3 is a third preset correction coefficient, a4 is a fourth preset correction coefficient, and a1<a2<a3<a4;
[0066] Based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness, the i-th preset correction coefficient ai is selected to correct the drying temperature B of the first drying area, where i=1, 2, 3, 4:
[0067] When D<D1, the first preset correction coefficient a1 is selected to correct the drying temperature, and the corrected drying temperature is B*a1;
[0068] When D1≤D<D2, the second preset correction coefficient a2 is selected to correct the drying temperature, and the corrected drying temperature is B*a2;
[0069] When D2≤D<D3, the third preset correction coefficient a3 is selected to correct the drying temperature, and the corrected real-time drying temperature is B*a3;
[0070] When D3≤D<D4, the fourth preset correction coefficient a4 is selected to correct the drying temperature, and the corrected real-time drying temperature is B*a4.
[0071] Regarding the determination method of the drying temperatures of the second drying area and the third drying area is the same as that of the first drying area, it should be noted that the matrix settings of the preset area matrix A, the drying temperature matrix B, the preset thickness matrix D0 and the correction coefficient matrix ai can be determined according to actual conditions.
[0072] It can be understood that in the above embodiment, the drying temperature of different drying areas is set based on the relationship between the actual area of the gypsum board 5 and the preset area, thereby improving the accuracy of determining the drying temperature; the drying temperature of different drying areas is corrected based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness, thereby further improving the accuracy of determining the drying temperature and thus improving the drying efficiency.
[0073] In some specific embodiments, in step S3, the height and drying area of the drying device 4 are determined based on the specifications of the gypsum board 5, including:
[0074] Step S31, setting a drying area of the drying device 4 based on the relationship between the actual area of the gypsum board 5 and the preset area;
[0075] Step S32, setting the height of the drying device 4 based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness.
[0076] Specifically, for the first drying area, setting the drying area of the drying device 4 includes:
[0077] Preset the drying area matrix S, set S(S1, S2, S3, S4), where S1 is the first drying area, S2 is the second drying area, S3 is the third actual area, S4 is the fourth drying area, and S1﹤S2﹤S3﹤S4;
[0078] The drying area of the drying device 4 is set based on the relationship between the actual area of the gypsum board 5 and the preset area;
[0079] When A=A1, the first preset drying area S1 is set as the drying area S;
[0080] When A=A2, the second preset drying area S2 is set as the drying area S;
[0081] When A=A3, the third preset drying area S3 is set as the drying area S;
[0082] When A=A4, the fourth preset drying area S4 is set as the drying area S.
[0083] It should be noted that the drying area S is slightly smaller than the actual area of the gypsum board 5 to avoid the edges of the gypsum board 5 from being overheated.
[0084] For the first drying area, setting the height of the drying device 4 includes:
[0085] Preset the height matrix H, set H(H1, H2, H3, H4), where H1 is the first height, H2 is the second height, H3 is the third actual area, and H4 is the fourth height;
[0086] The height of the drying device 4 is set based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness;
[0087] When D=D1, the first preset height H1 is set to height H;
[0088] When D=D2, the second preset height H2 is set to height H;
[0089] When D=D3, the third preset height H3 is set to height H;
[0090] When D=D4, the fourth preset height H4 is set as the height H.
[0091] It should be noted that the height H refers to the height between the drying device 4 and the gypsum board 5 .
[0092] It is understandable that in the above embodiment, by setting the drying area of the drying device 4 based on the relationship between the actual area of the gypsum board 5 and the preset area, the accuracy of determining the drying area of the drying device 4 is improved, and the drying area is prevented from being too large, and the high-temperature steam sprayed from the nozzle 41 directly blows the edge of the gypsum board 5, causing the edge of the gypsum board 5 to burn. The height of the drying device 4 is set based on the relationship between the actual thickness of the gypsum board 5 and the preset thickness; the drying efficiency is improved.
[0093] In some specific embodiments, after the drying area of the drying device 4 is set based on the relationship between the actual area of the gypsum board 5 and the preset area, the controller determines the position code of the nozzle 41 that needs to be opened based on the set height of the drying device 4, and opens the nozzle 41.
[0094] It can be understood that in the above embodiment, after the drying area of the drying device 4 is determined, the position code of the nozzle 41 in the drying area is determined, and the nozzle 41 in the drying area is turned on. The accuracy of determining whether to turn on the nozzle 41 is improved by setting the position code of the nozzle 41.
[0095] like Figure 1 , Figure 4-5 As shown, in some specific embodiments, the protection plate 3 is in the shape of a truncated pyramid, and a groove 31 is formed on the top of the truncated pyramid-shaped protection plate 3 .
[0096] It is understandable that in the above embodiment, the high-temperature steam sprayed from the nozzle 41 moves upward along the inclined surface of the outer wall of the protective plate 3 to avoid uneven distribution of the high-temperature steam and cause over-fire at the edge of the gypsum board 5.
[0097] In some specific embodiments, the protective plate 3 is a hollow mesh plate.
[0098] It can be understood that in the above embodiment, the protective plate 3 is a hollow mesh plate, which does not affect the drying effect of the edge of the paper-faced gypsum board 5.
[0099] In some specific embodiments, the mesh size of the hollow mesh plate decreases in sequence from the upper top surface to the lower top surface of the truncated pyramid-shaped protective plate 3.
[0100] It can be understood that in the above embodiment, the mesh size of the hollow mesh plate can be 0-10cm, and the mesh size of the hollow mesh plate decreases successively from the upper top surface to the lower top surface of the truncated pyramid-shaped protective plate 3. The smaller the mesh of the hollow mesh plate, the slower the flow rate of the high-temperature steam, the lower the drying speed of the edge of the gypsum board 5, and the avoidance of over-fire at the edge of the gypsum board 5.
[0101] In some specific embodiments, a drainage groove 32 is formed on the outer wall of the protective plate 3 .
[0102] It can be understood that in the above embodiment, the outer wall of the protective plate 3 is provided with a drainage groove 32, which is convenient for upward movement along the inclined surface of the outer wall of the protective plate 3, prompting the high-temperature steam flowing through the protective plate 3 to change direction, thereby reducing the drying speed of the edge of the gypsum board 5 and avoiding excessive fire at the edge of the gypsum board 5.
[0103] The dryer control device for preventing the edges of the gypsum board 5 from being over-fired provided by the present invention is provided with a protective plate 3 to slow down the flow speed and flow rate of the high-temperature gas in the edge area of the gypsum board 5; the drying temperature of the dryer is adjusted, and the air volume distribution of the edges of the semi-finished gypsum board 5 in the dryer is adjusted to prevent the edges of the gypsum board 5 from being over-fired.
[0104] Those skilled in the art can understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A dryer control device for preventing the edge of a gypsum board from being burned, comprising a drying chamber and a conveying roller passing through the drying chamber, characterized in that: include: Protective plates, the protective plates are fixed on both sides of the conveying roller, and the protective plates are used to prevent the edges of the gypsum board from being burned; A drying device, the drying device is used to dry the gypsum board; The drying device comprises a plurality of nozzles, flow guides and guide plates, wherein the flow guides are used to guide the direction of the high-temperature airflow sprayed from the nozzles, and the flow guides are fixed on the guide plates; It also includes a height adjustment component fixed on the drying chamber; the height adjustment component is used to control the distance between the guide plate and the gypsum board; A controller, the controller being used to determine a temperature range of a drying temperature based on the material of the gypsum board; Used to determine the drying temperatures of different drying areas based on the specifications of the gypsum board; The method is used to determine the height and drying area of the drying device based on the specifications of the gypsum board, comprising: Setting a drying area of the drying device based on a relationship between an actual area of the gypsum board and a preset area; Setting the height of the drying device based on the relationship between the actual thickness of the gypsum board and the preset thickness; After the drying area of the drying device is set based on the relationship between the actual area of the gypsum board and the preset area, the controller determines the position code of the nozzle that needs to be turned on based on the set drying area of the drying device, and turns on the nozzle.
2. The dryer control device for preventing the edge of the gypsum board from being over-fired according to claim 1, characterized in that: The step of determining the drying temperatures of different drying areas based on the specifications of the gypsum board comprises: Setting the drying temperatures of different drying areas based on the relationship between the actual area of the gypsum board and the preset area; The drying temperatures of different drying areas are corrected based on the relationship between the actual thickness of the gypsum board and the preset thickness.
3. The dryer control device for preventing the edge of the gypsum board from being over-fired according to claim 1, characterized in that: The protective plate is in the shape of a truncated pyramid, and a groove is provided on the top of the truncated pyramid.
4. The dryer control device for preventing the edge of the gypsum board from being over-fired according to claim 1, characterized in that: The protective plate is a hollow mesh plate.
5. The dryer control device for preventing the edge of the gypsum board from being over-fired according to claim 4, characterized in that: The mesh size of the hollow mesh plate decreases in sequence from the upper top surface to the lower top surface of the truncated pyramid-shaped protection plate.
6. The dryer control device for preventing the edge of the gypsum board from being over-fired according to claim 5, characterized in that: The outer wall of the protective plate is provided with a drainage groove.