A drying device for gypsum wallboard production and a method of use

Abstract

This invention relates to the field of gypsum board production technology, specifically to a drying device and method for producing gypsum wallboards. The device includes a drying chamber with an inlet and an outlet, and a roller for conveying gypsum wallboards inside the chamber. In this drying device and method, when the wallboards fall onto a front-mounted inclined tilting frame, their weight drives a sliding plate downwards, and the tilting frame is horizontally positioned, ensuring the wallboards are evenly heated and dried in a horizontal state. As the wallboards dry and lose weight, a return spring drives the sliding plate upwards, and the tilting frame tilts towards the outlet to discharge the wallboards. This process does not require a preset fixed drying time; the discharge action is automatically triggered based on the actual moisture content changes of different wallboards. This effectively avoids the problems of "under-drying" or "over-drying" of some wallboards due to differences in initial moisture content or local temperature fluctuations within the drying chamber, significantly improving the consistency of drying quality for different batches and specifications of gypsum wallboards and reducing the defect rate.

Description

Technical Field

[0001] This invention relates to the field of gypsum board production technology, specifically to a drying device and its usage method for gypsum wallboard production. Background Technology

[0002] In the production of gypsum wall panels, drying is a crucial step that determines the quality of the finished product. Currently, most gypsum wall panel drying equipment on the market adopts a "fixed conveying speed + uniform drying time" model. This means that wall panels are continuously conveyed into the drying chamber via rollers, and moisture evaporation is achieved through a preset drying time. However, in actual production, the initial moisture content of the gypsum wall panels to be dried varies (e.g., due to variations in the uniformity of raw material mixing and changes in the humidity of the molding environment). Furthermore, localized temperature fluctuations can easily occur in different areas within the drying chamber. This fixed model can lead to some wall panels retaining excessive moisture due to insufficient drying time (which can subsequently cause mold and deformation), or some wall panels cracking and losing strength due to over-drying, severely affecting the consistency of drying quality.

[0003] Meanwhile, during the drying process, the edges of gypsum wall panels have a much larger contact area with air than the center, resulting in faster moisture evaporation. Existing devices typically use overall water spraying or fixed edge-wetting structures to replenish water to the wall panels, but they cannot dynamically adjust the amount of water replenishment based on the actual moisture content of each side of the wall panel. If water is continuously replenished to the sides with already high moisture content, the overall drying cycle will be prolonged; if insufficient water is replenished to the sides with low moisture content, edge cracking is likely to occur, leading to an increased scrap rate of finished products.

[0004] In addition, some drying devices require manual monitoring of the wall panel drying status. Once the wall panels are determined to be dry, the conveying mechanism or flipping structure must be manually adjusted to discharge them. This not only increases the labor intensity of operators but also makes the drying effect unstable due to human judgment errors. On the other hand, a few devices with automated functions rely on multiple electronic control sensors (such as weight sensors and humidity sensors) and complex drive modules to achieve attitude switching. This not only results in high manufacturing costs but also makes the sensors prone to damage in the high-temperature environment of the drying chamber, significantly increasing the difficulty and cost of subsequent maintenance.

[0005] In view of this, we propose a drying device and its usage method for gypsum wallboard production. Summary of the Invention

[0006] The purpose of this invention is to provide a drying device and method for producing gypsum wallboards, to solve the problems of poor drying quality consistency, easy edge cracking, low automation, and high cost mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: a drying device for producing gypsum wallboards, comprising a drying chamber with an inlet and an outlet, and a roller for conveying gypsum wallboards is provided inside the drying chamber. A tilting frame is provided inside the drying chamber, and the tilting frame is located between two of the rollers.

[0007] Both sides of the flipping frame are provided with bearing seats, and the flipping frame is rotatably connected to the drying box through the bearing seats.

[0008] The bearing seat has a notch, and the bottom of the flip frame is fixedly provided with an insert plate that can be inserted into the notch, and a return spring is provided in the notch to make the insert plate move up.

[0009] The tilting frame and insert plate are positioned forward along the notch, deviating from the centerline and approaching the entrance. The tilting frame in the forward position is tilted towards the entrance side via the bearing seat.

[0010] A rear inclined groove is provided on the inner wall of the notch, and a central inclined groove is also provided at the bottom of the rear inclined groove. A protrusion is fixedly provided on the insert plate, and when the insert plate moves down to the bottom along the notch, the protrusion drives the flipping frame to be horizontally placed along the central inclined groove.

[0011] After the gypsum wall panels on the flipping frame are dried and lose weight, the protrusions enter the rear inclined groove, causing the flipping frame to move backward. The flipping frame in the rear position tilts towards the outlet side through the bearing seat.

[0012] Preferably, the flipping frame is provided with a hollow rectangular plate support, and the plate support has water holes inside. A water pipe is inserted into the bearing seat, and the water pipe passes through the plate support and communicates with the water holes. A lubricating groove communicating with the water holes is provided on the top surface of the plate support.

[0013] Preferably, an elastic sheet is provided between the plate support and the flip frame.

[0014] The plate support has a closed hole inside that connects to a water hole and a lubrication groove, and the two ends of the closed hole are tapered openings. A sealing bead is movably installed inside the closed hole.

[0015] Preferably, when the tilting frame is in an inclined state, the lowest point of the tilting frame is lower than the top surface of the roller, and when the tilting frame is in a rearward tilted state, the lowest point of the tilting frame is higher than the top surface of the roller.

[0016] Preferably, the connection between the central inclined groove and the rear inclined groove is provided with a rounded corner transition structure.

[0017] Preferably, the end of the water pipe away from the plate support is connected to a flow regulating valve, and the flow regulating valve is fixed to the outer wall of the drying oven by a bracket.

[0018] Preferably, the diameter of the sealing bead is larger than the minimum diameter of the tapered openings at both ends of the sealing hole, and the sealing bead is made of high-temperature resistant rubber material.

[0019] A method for using a drying device for gypsum wallboard production includes the following steps:

[0020] S1. Under the pushing action of the return spring in the notch of the shaft seat, the flip frame inside the drying box maintains a forward tilted state along the center line of the notch towards the inlet side, with the inlet side being lower and the side away from the inlet side being higher.

[0021] S2. The gypsum wall panels to be dried are conveyed to the front inclined flip frame by the inlet side roller. The weight of the wall panels presses against the flip frame, pushing the insert plate to overcome the spring force of the return spring and move down along the notch of the shaft seat until the insert plate moves down to the bottom of the notch groove.

[0022] S3. During the downward movement of the insert plate, the protrusion on its surface slides along the central inclined groove on the inner side wall of the notch, causing the flipping frame to switch from the forward tilting state to the horizontal horizontal state. The wall panel is laid smoothly on the plate support, and the drying box heats and dries the horizontally placed wall panel.

[0023] S4. During the drying process, the water pipe connected to the shaft seat is turned on to slowly supply water. Water flows into the edge-lubricating groove through the water hole and the closed hole to replenish water to the four sides of the wall panel. If the moisture content of a certain side of the wall panel is high and the weight is heavy, the board support tilts towards that side along the elastic sheet. The closed bead on that side fits the conical opening to block the water supply. The moisture content of the other side is low and the board support is raised, so the water supply is maintained, thus achieving differentiated edge lubrication.

[0024] S5. Continue drying until the wall panel moisture evaporates and the weight is reduced. When the weight of the wall panel is insufficient to overcome the spring force of the return spring, the return spring pushes the insert plate to move up. The insert plate drives the protrusion to leave the central inclined groove and enter the rear inclined groove. The flipping frame switches from a horizontal state to a rear state that is inclined towards the exit side, with the exit side being lower and the side away from the exit side being higher.

[0025] S6. The rear-mounted inclined tilting rack allows the dried wall panels to slide along their surface toward the outlet roller, which then transports the wall panels out through the outlet of the drying chamber.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] In this invention, a dynamic matching mechanism of "weight sensing-adaptive switching of tilting frame posture" is achieved for the drying and discharge of wall panels: when the wall panel to be dried falls onto the front tilting frame, its weight drives the insert plate to move downward and the tilting frame to be horizontal, ensuring that the wall panel is uniformly heated and dried in a stable horizontal state; as the wall panel loses weight during drying, the return spring drives the insert plate to move upward and the tilting frame to tilt towards the outlet side to discharge the wall panel. This process does not require a preset fixed drying time and can automatically trigger the discharge action according to the actual moisture content changes of different wall panels (reflected in weight changes), effectively avoiding the problems of "insufficient drying of some wall panels" or "over-drying of some wall panels" caused by differences in the initial moisture content of the wall panels and local temperature fluctuations in the drying chamber, significantly improving the consistency of drying quality of different batches and specifications of gypsum wall panels and reducing the defective product rate.

[0028] In this invention, an adaptive edge-lubricating system that "replenishes water on demand" is constructed through the coordinated design of a plate support, elastic sheet, sealing beads, and edge-lubricating groove. During the drying process, when water is supplied to the plate support through the water pipe, if the moisture content of each side of the wall panel is uniform, moisture is replenished to the four sides of the wall panel through the edge-lubricating groove to prevent the edges of the wall panel from drying and cracking before the center due to excessive moisture evaporation. If the moisture content (weight) of a certain side of the wall panel is higher, the plate support will tilt towards that side along the elastic sheet, causing the sealing beads on the corresponding side to fit into the conical opening and block the water supply, continuously replenishing water only to the side with lower moisture content. This differentiated edge-lubricating design precisely matches the moisture requirements of each side of the wall panel, avoiding "blindly replenishing water leading to a decrease in drying efficiency in the center" and completely solving the industry pain point of easy cracking of wall panel edges in traditional drying devices, thus improving the appearance and structural integrity of the finished wall panel.

[0029] In this invention, the entire process of "wall panel receiving - horizontal drying - adaptive edge moistening - automatic discharge" can be completed without any manual intervention: In the initial state, the tilting frame automatically maintains a forward tilt for material waiting; after the wall panel is conveyed, its own weight drives the tilting frame to switch to a horizontal drying posture; after drying, the weightlessness automatically triggers the tilting frame to tilt backward and discharge the wall panel. Simultaneously, the edge moistening process achieves adaptive adjustment through a mechanical structure, eliminating the need for real-time monitoring of the drying progress, manual adjustment of the tilting frame posture, or control of the moistening water volume. This automated design not only reduces manual operation steps and the labor intensity of operators but also avoids the impact of human judgment errors on drying quality. Furthermore, the device achieves coordination among all stages through mechanical linkage, eliminating the need for additional complex electronic control sensors and drive modules. This improves the level of automation while controlling equipment manufacturing and subsequent maintenance costs, demonstrating high economic practicality. Attached Figure Description

[0030] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the bearing seat and the roller of the present invention;

[0032] Figure 3 This is an exploded view of the shaft seat and roller of the present invention;

[0033] Figure 4 This is an exploded view of the flip-up frame and the tray of the present invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0035] Figure 6 This is a three-dimensional structural cross-sectional view of the bearing seat of the present invention;

[0036] Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle;

[0037] Figure 8 This is a schematic diagram of the insert plate and return spring of the present invention;

[0038] Figure 9 This is a top sectional view of the plate support of the present invention;

[0039] Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle.

[0040] In the diagram: 1. Drying oven; 2. Drum; 3. Tilting frame; 4. Shaft seat; 5. Notch; 6. Insert plate; 7. Return spring; 8. Rear inclined groove; 9. Centered inclined groove; 10. Protrusion; 11. Plate support; 12. Water hole; 13. Water pipe; 14. Edge lubrication groove; 15. Elastic sheet; 16. Sealing hole; 17. Conical opening; 18. Sealing bead. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1 to 10 This invention provides a technical solution: a drying device for gypsum wallboard production, comprising a drying chamber 1 with an inlet and an outlet, and a roller 2 for conveying gypsum wallboards inside the drying chamber 1. A tilting frame 3 is also provided inside the drying chamber 1, located between two of the rollers 2. The rollers 2 are arranged at intervals along the length of the drying chamber 1, and the axes of each roller 2 are parallel to each other. Both ends of the roller 2 are rotatably connected to the inner wall of the drying chamber 1 via bearing seats. One end of the roller 2 extends to the outside of the drying chamber 1 and is connected to a drive motor via a chain drive, which can drive the roller 2 to rotate synchronously to convey the gypsum wallboards.

[0043] Both sides of the tilting frame 3 are equipped with bearing seats 4, and the tilting frame 3 is rotatably connected to the drying box 1 through the bearing seats 4. The bearings and bearing seats 4 are rotatably engaged, which can reduce the frictional resistance when the tilting frame 3 rotates and ensure smooth posture switching.

[0044] A notch 5 is provided on the bearing seat 4. An insert plate 6 is fixedly installed at the bottom of the flip frame 3, which is inserted into the notch 5. A return spring 7 is provided inside the notch 5 to move the insert plate 6 upward. The notch 5 is a rectangular groove that extends horizontally and through the top. The insert plate 6 is a rectangular plate structure that fits the notch 5 and is fixedly connected to the bottom of the flip frame 3 by bolts. The return spring 7 is a compression spring. One end of it is welded and fixed to the bottom of the groove in the notch 5, and the other end is connected to a slide block that slides at the bottom of the insert plate 6. In the initial state, it can apply an upward thrust to the insert plate 6.

[0045] The tilting frame 3 and the insert plate 6 are positioned forward along the notch 5, deviating from the centerline and approaching the entrance. In this forward-positioned state, the tilting frame 3 is tilted towards the entrance side via the bearing 4. In this forward-positioned state, the tilt angle between the top surface of the tilting frame 3 and the horizontal plane is 5-10°, and the distance between its edge near the entrance and the adjacent roller 2 is 20-30mm, ensuring that the gypsum wall panel can smoothly transition from the roller 2 to the tilting frame 3.

[0046] A rear inclined groove 8 is formed on the inner wall of the notch 5, and a central inclined groove 9 is formed at the bottom of the rear inclined groove 8. A protrusion 10 is fixedly set on the insert plate 6. When the insert plate 6 moves down along the notch 5 to the bottom, the protrusion 10 drives the flip frame 3 to be horizontally positioned along the central inclined groove 9. The rear inclined groove 8 and the central inclined groove 9 are both grooves that extend inclinedly along the inner wall of the notch 5. The width of the grooves is adapted to the diameter of the protrusion 10, and the fitting clearance is 0.1-0.3mm. The protrusion 10 is a cylindrical structure, integrally formed with the insert plate 6, and its axis is perpendicular to the thickness direction of the insert plate 6.

[0047] After the gypsum wall panels on the tilting frame 3 have dried and lost weight, the protrusion 10 enters the rear inclined groove 8, causing the tilting frame 3 to move backward. In this rear-positioned state, the tilting frame 3 tilts towards the outlet side via the bearing 4. In this rear-positioned state, the tilt angle between the top surface of the tilting frame 3 and the horizontal plane is 8-15°, and the distance between its edge near the outlet side and the adjacent roller 2 is 15-25mm, which facilitates the sliding of the dried wall panels onto the roller 2.

[0048] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the tilting frame 3 is equipped with a hollow rectangular plate support 11. Rollers are rotatably mounted on the side of the plate support 11 near the outlet. One to three rollers are spaced apart along the width of the plate support 11. Both ends of the rollers are rotatably connected to the plate support 11 via bearing seats, and their outer circumference is flush with the top surface of the plate support 11. When tilted backwards, the gypsum wall panel rolls along the rollers onto the roller 2, reducing frictional damage between the wall panel and the plate support 11. Water holes 12 are provided inside the plate support 11, and a water pipe 13 is inserted into the bearing seat 4, penetrating the plate support 11 and communicating with the water hole 12. The water pipe 13 is made of high-temperature resistant silicone tubing, and a sealing ring is provided at its insertion point with the bearing seat 4. The connection with the water hole 12 is fixed by a pipe clamp. A lubricating groove 14 communicating with the water hole 12 is provided on the top surface of the plate support 11. The lubricating groove 14 is arranged in a rectangular ring along the edge of the top surface of the plate support 11, and its cross-section is U-shaped. A heat-resistant sponge is installed inside the edge-lubricating groove 14. The sponge is embedded in the edge-lubricating groove 14 and is interference-fitted with the groove wall. It is made of polyurethane sponge that can withstand high temperatures above 150℃ and has a water absorption rate of ≥200%, which can absorb and disperse the water inside to the wall panel.

[0049] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, an elastic sheet 15 is provided between the plate support 11 and the flip frame 3. The elastic sheet 15 is made of spring steel with a thickness of 0.5-1mm, and 3-5 sheets are arranged at intervals along the length of the plate support 11. The two ends of the elastic sheet 15 are fixed to the top surface of the flip frame 3 and the bottom surface of the plate support 11 by rivets, respectively. In its natural state, it can keep the plate support 11 horizontal, and when subjected to force, it can produce elastic deformation to cause the plate support 11 to tilt.

[0050] The plate support 11 has a closed hole 16 inside, which connects the water hole 12 and the edge groove 14. The two ends of the closed hole 16 are tapered openings 17 with a taper of 30-45°. A sealing bead 18 is movably disposed inside the closed hole 16. The sealing bead 18 has a spherical structure and is made of silicone rubber with a Shore hardness of 60-70. Its diameter is 0.5-1mm larger than the minimum diameter of the tapered opening 17. It can roll freely inside the closed hole 16. When the closed hole 16 is tilted, the sealing bead 18 can fit against one side of the tapered opening 17 to achieve a seal.

[0051] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, when the tilting frame 3 is in the forward tilting state, the lowest point of the tilting frame 3 is lower than the top surface of the roller 2. When the tilting frame 3 is in the rear tilting state, the lowest point of the tilting frame 3 is higher than the top surface of the roller 2. When the gypsum wall panel is conveyed from the inlet roller 2 to the forward tilting frame 3, because the lowest point of the tilting frame 3 is lower than the top surface of the roller 2, the wall panel can naturally slide onto the tilting frame 3 by its own weight, avoiding the problems of "plate jamming" or "suspending" and ensuring smooth conveying. When the wall panel is dried and loses weight, the tilting frame 3 switches to the rear tilting state. Because the lowest point of the tilting frame 3 is higher than the top surface of the outlet roller 2, the wall panel can smoothly slide along the tilting frame 3 to the outlet roller 2.

[0052] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, a rounded transition structure is provided at the connection between the central inclined groove 9 and the rear inclined groove 8. The rounded transition structure can guide the protrusion 10 to slide smoothly, reduce the frictional resistance and mechanical impact between the protrusion 10 and the inclined groove wall, ensure that the flip frame 3 can switch accurately and quickly according to the weightlessness of the wall panel, and avoid wear and deformation of the protrusion 10 or the inclined groove wall due to long-term collision, thus extending the service life of the core components of the device.

[0053] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the end of water pipe 13 furthest from the plate support 11 is connected to a flow regulating valve, which is fixed to the outer wall of the drying chamber 1 by a bracket. The flow regulating valve can flexibly adjust the amount of water entering the water hole 12 of the plate support 11 according to the specifications of the gypsum wall panel, such as thickness, width, or drying process requirements. This avoids excessive water flow leading to over-wetting of the wall panel edges or insufficient water flow leading to inadequate edge wetting, ensuring that the "edge wetting and crack prevention" function accurately adapts to different production needs. The bracket fixes the flow regulating valve to the outer wall of the drying chamber 1, allowing operators to directly adjust the water flow without opening the drying chamber 1. This avoids frequent opening of the drying chamber 1, which can cause temperature fluctuations inside the chamber, and also facilitates daily inspection and maintenance, reducing operational difficulty.

[0054] In this embodiment, as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the diameter of the sealing bead 18 is larger than the minimum diameter of the conical openings 17 at both ends of the sealing hole 16. The sealing bead 18 is made of high-temperature resistant rubber material, which allows it to fit tightly against the conical openings 17 to form a seal when the plate support 11 is tilted and the sealing bead 18 shifts. The high-temperature resistant rubber material of the sealing bead 18 can resist high-temperature aging and deformation, preventing the sealing bead 18 from losing its elasticity or sealing performance due to high temperature. This ensures that the sealing bead 18 can still stably achieve the "sealing-opening" function under long-term high-temperature conditions, thus guaranteeing the reliability and service life of the edge-lubricating structure.

[0055] A method for using a drying device for gypsum wallboard production includes the following steps:

[0056] S1. Under the pushing action of the return spring 7 inside the notch 5 of the shaft seat 4, the inner flip frame 3 of the drying box 1 maintains a forward tilted state along the center line of the notch 5 towards the inlet side, with the inlet side being lower and the side away from the inlet side being higher.

[0057] S2. The gypsum wall panel to be dried is conveyed to the front inclined flip frame 3 through the inlet side roller 2. The weight of the wall panel itself presses the flip frame 3, pushing the insert plate 6 to overcome the elastic force of the return spring 7 and move down along the notch 5 of the shaft seat 4 until the insert plate 6 moves down to the bottom of the notch 5.

[0058] S3. During the downward movement of the insert plate 6, the protrusion 10 on its surface slides along the central inclined groove 9 on the inner side wall of the notch 5, which drives the flipping frame 3 to switch from the front inclined state to the horizontal horizontal state. The wall panel is stably laid on the plate support 11, and the drying box 1 heats and dries the horizontally placed wall panel.

[0059] S4. During the drying process, the water pipe 13 connected to the shaft seat 4 is turned on to slowly supply water. Water flows into the edge-lubricating groove 14 through the water hole 12 and the closed hole 16 to replenish water to the four sides of the wall panel. If the moisture content of a certain side of the wall panel is high and the weight is heavy, the board support 11 tilts towards that side along the elastic sheet 15. The closed bead 18 on that side fits the conical opening 17 to block the water supply. If the moisture content of the other side is low and the board support 11 is raised, the water supply is maintained, thus achieving differentiated edge lubrication.

[0060] S5. Continue drying until the wall panel moisture evaporates and the weight is reduced. When the weight of the wall panel is insufficient to overcome the spring force of the return spring 7, the return spring 7 pushes the insert plate 6 upward. The insert plate 6 drives the protrusion 10 to disengage from the central inclined groove 9 and enter the rear inclined groove 8. The flipping frame 3 switches from a horizontal state to a rear state that is inclined towards the outlet side, with the outlet side being lower and the side away from the outlet side being higher.

[0061] S6. The rear-mounted inclined tilting frame 3 allows the dried wall panel to slide along its surface toward the outlet roller 2, and the roller 2 conveys the wall panel out through the outlet of the drying box 1.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for gypsum wallboard production, characterized in that, It includes a drying box (1) with an inlet and an outlet, and the drying box (1) is equipped with a roller (2) for conveying gypsum wall panels and a turning frame (3) located between two adjacent rollers (2); The two sides of the flip frame (3) are rotatably connected to the drying box (1) through the bearing seat (4). The bearing seat (4) has a notch (5). The bottom of the flip frame (3) is fixed with a plate (6) that inserts into the notch (5). The notch (5) is provided with a return spring (7) that drives the plate (6) to move upward. The tilting frame (3) and the insert plate (6) are positioned along the center line of the notch (5) towards the entrance. When positioned in front, the tilting frame (3) is tilted towards the entrance side. The inner wall of the notch (5) has a rear inclined groove (8), the bottom of the rear inclined groove (8) is connected to the central inclined groove (9), and the insert plate (6) is fixed with a protrusion (10). When the insert plate (6) moves down to the bottom of the notch (5), the protrusion (10) drives the flipping frame (3) to be horizontally placed along the central inclined groove (9); After the gypsum wallboard on the flipping frame (3) is dried and loses weight, the protrusion (10) enters the rear inclined groove (8) and drives the flipping frame (3) to be moved to the rear. When it is moved to the rear, the flipping frame (3) tilts towards the outlet side.

2. The drying device for gypsum wallboard production according to claim 1, characterized in that: The flip frame (3) is provided with a hollow rectangular plate support (11), with a water hole (12) inside the plate support (11), and a water pipe (13) inserted into the bearing seat (4). The water pipe (13) passes through the plate support (11) and communicates with the water hole (12). A lubricating groove (14) communicating with the water hole (12) is opened on the top surface of the plate support (11).

3. The drying device for gypsum wallboard production according to claim 2, characterized in that: An elastic sheet (15) is provided between the plate support (11) and the flip frame (3). A sealing hole (16) is opened in the plate support (11). The two ends of the sealing hole (16) are connected to the water hole (12) and the edge groove (14), and both are conical openings (17). A sealing bead (18) is installed in the sealing hole (16).

4. A drying device for gypsum wallboard production according to claim 3, characterized in that: When the tilting frame (3) is tilted forward, its lowest point is lower than the top surface of the roller (2), and when the tilting frame (3) is tilted backward, its lowest point is higher than the top surface of the roller (2).

5. A drying device for gypsum wallboard production according to claim 4, characterized in that: The connection between the central inclined groove (9) and the rear inclined groove (8) is provided with a rounded corner transition structure.

6. A drying device for gypsum wallboard production according to claim 5, characterized in that: The water pipe (13) is connected to a flow regulating valve at the end away from the plate support (11). A bracket is fixed on the outer wall of the drying box (1), and the flow regulating valve is fixed to the drying box (1) through the bracket.

7. A drying device for gypsum wallboard production according to claim 6, characterized in that: The diameter of the closed bead (18) is larger than the minimum diameter of the conical opening (17) of the closed hole (16), and it is made of high-temperature resistant rubber.

8. A method of using a drying device for gypsum wallboard production, comprising using the drying device for gypsum wallboard production as described in claim 7, characterized in that... Includes the following steps: S1, the tilting frame (3) maintains a forward tilt state with the entrance side lower and the side away from the entrance side higher under the action of the return spring (7); S2. The wall panel to be dried is conveyed to the turning frame (3) via the inlet side roller (2). The weight of the wall panel pushes the insert plate (6) down to the bottom of the notch (5). S3, the insert plate (6) protrusion (10) slides along the central inclined groove (9), the flip rack (3) switches to the horizontal state, and the drying box (1) heats and dries the wall panel; S4, water pipe (13) supplies water, water flows into the edge groove (14) through water hole (12) and closed hole (16); when the water content of the wall panel is uneven, the board support (11) tilts to cut off the water supply to the closed bead (18) on the high water content side and continuously replenish water to the low water content side; S5. After the wall panel is dried and loses weight, the reset spring (7) pushes the insert plate (6) upward, the protrusion (10) enters the rear inclined groove (8), and the flip frame (3) switches to the rear inclined state with the outlet side low. S6. The drying wall panel slides along the rear inclined tilting frame (3) to the outlet side roller (2) and is discharged through the outlet conveyor.

Images