Drying device for gypsum wallboard production and using method

Abstract

The invention relates to the technical field of gypsum board production, in particular to a drying device for gypsum wallboard production and a using method, the drying device comprises a drying box provided with an inlet and an outlet, and a roller for conveying gypsum wallboards is arranged in the drying box. According to the drying device for gypsum wallboard production and the using method, when a wallboard to be dried falls on the front inclined turning frame, the weight of the wallboard drives the inserting plate to move downwards, the turning frame is horizontally arranged, and it is guaranteed that the wallboard is evenly heated and dried in the horizontal state; along with drying weight loss of the wallboard, the reset spring drives the insertion plate to move upwards, and the turning frame inclines towards the outlet side to discharge the wallboard. In the process, the fixed drying time does not need to be preset, the discharging action can be automatically triggered according to the actual water content change of different wallboards, and the problems of insufficient drying of part of wallboards or excessive drying of part of wallboards caused by the initial water content difference of the wallboards and local temperature fluctuation in the drying box are effectively avoided; and the drying quality consistency of gypsum wallboards of different batches and different specifications is remarkably improved, and the rate of unqualified products is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum board production, in particular to a drying device for gypsum wallboard production and a use method thereof. Background Art

[0002] In the gypsum wallboard production process, drying is a critical step in determining the quality of the finished wallboards. Currently, most gypsum wallboard drying equipment on the market utilizes a "fixed conveying speed + uniform drying time" model, where wallboards are continuously conveyed into a drying chamber via rollers, and moisture is evaporated based on a preset drying time. However, in actual production, the initial moisture content of the gypsum wallboards to be dried varies (due to factors such as the uniformity of raw material mixing and changes in the humidity of the molding environment), and localized temperature fluctuations are common in different areas of the drying chamber. This fixed model can easily lead to some wallboards retaining excess moisture due to insufficient drying time (which can subsequently cause mold and deformation), or some wallboards cracking and weakening due to overdrying, seriously affecting the consistency of drying quality.

[0003] At the same time, when gypsum wallboards are drying, the edge of the gypsum wallboard is in contact with the air much more than the middle, and the water evaporates faster. Existing devices usually use an overall water spray or a fixed edge moistening structure to replenish water for the wallboard, but they cannot dynamically adjust the amount of water replenishment according to the actual moisture content of each side of the wallboard. If the side with a higher moisture content is continuously replenished with water, the overall drying cycle will be extended; if the side with too low moisture content is insufficiently replenished with water, the edge is prone to cracking, resulting in an increased scrap rate of the finished product.

[0004] In addition, some drying devices require manual monitoring of the drying status of the wall panels. After the wall panels are judged to be dried, the conveying mechanism or flipping structure is manually adjusted to achieve discharge. This not only increases the labor intensity of the operator, but also easily leads to unstable drying effects due to manual judgment errors. A few devices with automatic functions rely on multiple electronic control sensors (such as weight sensors, humidity sensors) and complex drive modules to achieve posture switching. Not only is the manufacturing cost high, but the sensors are easily damaged in the high temperature environment of the drying box, and the difficulty and cost of subsequent maintenance are significantly increased.

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

[0006] The present invention aims to provide a drying device and method for gypsum wallboard production, addressing the aforementioned issues of poor drying quality consistency, cracked edges, low automation, and high costs identified in the background art. To achieve this objective, the present invention provides the following technical solution: a drying device for gypsum wallboard production, comprising a drying box having an inlet and an outlet, a drum for conveying gypsum wallboards within the drying box, and a tilting rack positioned between two of the drums.

[0007] Axle seats are provided on both sides of the turnover frame, and the turnover frame is rotatably connected along the drying box through the axle seats.

[0008] A notch is provided on the shaft seat, a plugging plate inserted into the notch is fixedly provided on the bottom of the turnover frame, and a return spring for moving the plugging plate upward is provided in the notch.

[0009] The turning frame and the inserting plate are moved forward along the notch away from the center line and close to the entrance, and the turning frame in the forward state is tilted toward the entrance side through the axle seat.

[0010] A rear oblique groove is provided on the inner side wall of the notch, and a central oblique groove is also provided at the bottom of the rear oblique groove. A protrusion is fixedly provided on the inserting plate, and when the inserting plate moves down to the bottom along the notch, the protrusion drives the flip frame to be horizontally moved along the central oblique groove.

[0011] After the gypsum wallboard on the turnover frame is dried and loses weight, the protrusion enters the rear inclined slot to drive the turnover frame to move backward, and the turnover frame in the rearward state is tilted toward the outlet side through the axle seat.

[0012] Preferably, a plate support with a hollow rectangular structure is provided on the flip frame, and a water hole is opened inside the plate support. A water pipe is inserted into the axle seat, and the water pipe passes through the plate support and is connected with the water hole. A wetting groove connected to the water hole is opened on the top surface of the plate support.

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

[0014] A closed hole communicating with the water hole and the edge-wetting groove is provided inside the plate support, and both ends of the closed hole are set as tapered openings. A closed bead is movably arranged in the closed hole.

[0015] Preferably, when the turnover frame is in an inclined state, the lowest point of the turnover frame is lower than the top surface of the drum; when the turnover frame is in a rearward inclined state, the lowest point of the turnover frame is higher than the top surface of the drum.

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

[0017] Preferably, one 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 box through a bracket.

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

[0019] A method for using a drying device for producing gypsum wallboards comprises the following steps: S1. Under the pushing action of the return spring in the axle seat notch, the tilting frame in the drying box maintains a forward tilted state along the center line of the notch toward the inlet side, with the inlet side lower and the side away from the inlet higher.

[0020] S2, the gypsum wallboard to be dried is conveyed to the front inclined turnover frame by the inlet side roller, the weight of the wallboard presses the turnover frame, the plug plate is pushed to move downward along the gap of the shaft seat against the elastic force of the reset spring, and the plug plate is moved to the bottom of the gap slot.

[0021] S3, during the downward movement of the plug plate, the surface protrusion slides along the central inclined groove of the inner side wall of the gap, the turnover frame is switched from the front inclined state to the horizontal transverse state, the wallboard is stably laid on the plate support, and the drying box heats and dries the horizontally placed wallboard.

[0022] S4, during the drying process, the water pipe connected with the shaft seat is slowly supplied with water, the water flows into the edge wetting groove through the water hole and the closed hole to supplement the water of the four edges of the wallboard, if the water content of a side of the wallboard is higher and the weight is heavier, the plate support tilts to the side along the elastic sheet, the closed bead on the side fits the conical port to block the water supply, and the other side with low water content and the plate support is lifted to maintain the water supply, so that the differential edge wetting is realized.

[0023] S5, the wallboard is continuously dried until the water evaporates and the weight decreases, when the weight of the wallboard is insufficient to overcome the elastic force of the reset spring, the reset spring pushes the plug plate to move upward, the plug plate drives the protrusion to move out of the central inclined groove and into the rear inclined groove, the turnover frame is switched from the horizontal state to the rear inclined state inclined to the outlet side, and the outlet side is low and far away from the outlet side.

[0024] S6, the rear inclined turnover frame makes the dried wallboard slide along the surface thereof to the outlet side roller, and the wallboard is conveyed and discharged through the outlet of the drying box by the roller.

[0025] Compared with the prior art, the beneficial effects of the present application are: In the present application, through the "weight sensing-turnover frame posture self-adaptive switching" mechanism, the dynamic matching of wallboard drying and discharge is realized: when the wallboard to be dried falls on the front inclined turnover frame, the weight of the wallboard drives the plug plate to move downward, and the turnover frame is horizontally transversely placed, so that the wallboard is uniformly heated and dried in a stable horizontal state; as the wallboard loses weight during drying, the reset spring drives the plug plate to move upward, and the turnover frame is inclined to the outlet side to discharge the wallboard. This process does not need to preset a fixed drying time, and can automatically trigger the discharge action according to the actual water content change (reflected as the weight change) of different wallboards, effectively avoiding the problems of "inadequate drying of part of the wallboard" or "excessive drying of part of the wallboard" caused by the difference in initial water content of the wallboard and the local temperature fluctuation in the drying box, significantly improving the consistency of the drying quality of different batches and different specifications of gypsum wallboard, and reducing the rate of unqualified products.

[0026] The present invention utilizes a collaborative design of panel supports, elastic sheets, sealing beads, and edge-wetting grooves to create an adaptive, "on-demand" edge-wetting system. During the drying process, if the moisture content of each wallboard side is uniform, water is supplied to the panel supports through the edge-wetting grooves, preventing the edges from drying out and cracking before the center due to rapid evaporation. If one side of the wallboard has a higher moisture content (heavier weight), the panel supports tilt toward that side along the elastic sheet, allowing the sealing beads on the corresponding side to fit into the tapered opening, blocking the water supply and continuously replenishing water only to the side with the lower moisture content. This differentiated edge-wetting design precisely matches the moisture needs of each side of the wallboard, avoiding the "blind water supply leading to reduced drying efficiency in the center" while completely resolving the industry pain point of wallboard edges drying out and cracking in traditional drying devices, thereby improving the appearance and structural integrity of the finished wallboard.

[0027] In the present invention, the entire process of "wall panel acceptance - horizontal drying - adaptive edge moistening - automatic discharge" can be completed without human intervention: in the initial state, the flip frame automatically maintains a front tilt to wait for materials, and after the wall panels are delivered, it relies on its own weight to drive the flip frame to switch to a horizontal drying posture. After drying is completed, it automatically triggers the flip frame to tilt backward to discharge the wall panels due to the weightless state. At the same time, the edge moistening process is adaptively adjusted through the mechanical structure, without the need for manual real-time monitoring of the drying progress, manual adjustment of the flip frame posture, or control of the amount of water for edge moistening. This automated design not only reduces the number of manual operation steps and the labor intensity of the operators, but also avoids the impact of manual judgment errors on the drying quality. In addition, the device achieves coordination of various links through mechanical linkage, without the need for additional configuration of complex electronic control sensors and drive modules. While improving the level of automation, it also controls the equipment manufacturing cost and subsequent maintenance cost, and has high economic practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic structural diagram of the shaft seat and the roller of the present invention; Figure 3 This is an exploded view of the shaft seat and the roller of the present invention; Figure 4 This is an exploded view of the turning frame and the plate support of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 It is a three-dimensional structural cross-sectional view of the axle seat of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic structural diagram of the insert plate and the return spring of the present invention; Figure 9 A top sectional view of the plate support of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of point C in the middle.

[0029] In the figure: 1. Drying box; 2. Drum; 3. Turning frame; 4. Axle seat; 5. Notch; 6. Insert plate; 7. Return spring; 8. Rear inclined slot; 9. Centered inclined slot; 10. Protrusion; 11. Plate support; 12. Water hole; 13. Water pipe; 14. Edge-running slot; 15. Elastic sheet; 16. Closing hole; 17. Conical mouth; 18. Closing bead. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] See also Figures 1 to 10 The present invention provides a technical solution: a drying device for producing gypsum wallboards, comprising a drying box 1 having an inlet and an outlet. Inside the drying box 1 are rollers 2 for conveying gypsum wallboards. A turning frame 3 is provided within the drying box 1, with the turning frame 3 positioned between two rollers 2. The rollers 2 are spaced apart along the length of the drying box 1, with the axes of the rollers 2 parallel to each other. Both ends of the rollers 2 are rotatably connected to the inner wall of the drying box 1 via bearing blocks. One end of the roller 2 extends outside the drying box 1 and is connected to a drive motor via a chain drive, driving the rollers 2 to rotate synchronously to convey the gypsum wallboards.

[0032] Axle seats 4 are provided on both sides of the turnover frame 3, and the turnover frame 3 is rotatably connected along the drying box 1 through the axle seats 4. And the rotational cooperation between the bearing and the axle seat 4 can reduce the friction resistance when the turnover frame 3 rotates, ensuring smooth posture switching.

[0033] A notch 5 is defined in the axle seat 4. A plug-in plate 6 is fixedly mounted at the bottom of the tilt frame 3, inserted into the notch 5. A return spring 7 is located within the notch 5, forcing the plug-in plate 6 upward. The notch 5 is a horizontal, rectangular slot with a through-hole at the top. The plug-in plate 6 is a rectangular plate-like structure that fits the notch 5 and is bolted to the bottom of the tilt frame 3. The return spring 7 is a compression spring, one end welded to the bottom of the notch 5 and the other end connected to a sliding seat mounted on the bottom of the plug-in plate 6. Initially, it applies an upward force to the plug-in plate 6.

[0034] The tilting frame 3 and the inserting plate 6 are positioned forward, offset from the centerline along the notch 5 and closer to the entrance. In this forward position, the tilting frame 3 is tilted toward the entrance via the axle seat 4. In this forward position, the top surface of the tilting frame 3 is tilted at an angle of 5-10° to the horizontal plane, and the edge near the entrance is spaced 20-30 mm from the adjacent roller 2, ensuring a smooth transition of the gypsum wallboard from the roller 2 to the tilting frame 3.

[0035] The inner wall of the notch 5 is provided with a rearwardly positioned beveled slot 8, and a centrally positioned beveled slot 9 is also defined at its base. A protrusion 10 is fixedly mounted on the inserting plate 6. When the inserting plate 6 descends along the notch 5 to the bottom, the protrusion 10 drives the tilting frame 3 horizontally along the centrally positioned beveled slot 9. Both the rearwardly positioned beveled slot 8 and the centrally positioned beveled slot 9 are grooves extending obliquely along the inner wall of the notch 5. Their widths match the diameter of the protrusion 10, with a clearance of 0.1-0.3 mm. The protrusion 10 is cylindrical and integrally formed with the inserting plate 6, with its axis perpendicular to the thickness of the inserting plate 6.

[0036] After the gypsum wallboards on the tilting frame 3 have dried and lost weight, the protrusions 10 enter the rearward chute 8, driving the tilting frame 3 backward. In this backward position, the tilting frame 3 tilts toward the outlet via the axle seat 4. In this backward position, the top surface of the tilting frame 3 is tilted at an angle of 8-15° to the horizontal, and the edge near the outlet is spaced 15-25 mm from the adjacent drum 2, facilitating the sliding of the dried wallboards toward the drum 2.

[0037] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a hollow rectangular plate support 11 is provided on the tilting frame 3. Rollers are provided on the side of the plate support 11 near the outlet for rolling. 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 circumferences are flush with the top surface of the plate support 11. When tilted backward, the gypsum wallboard rolls along the rollers onto the drum 2, reducing friction damage between the wallboard and the plate support 11. A water hole 12 is provided within the plate support 11. A water pipe 13 is plugged into the shaft seat 4 and passes through the plate support 11 to connect with the water hole 12. The water pipe 13 is a high-temperature resistant silicone tube. A sealing ring is provided at the connection with the shaft seat 4, and the connection with the water hole 12 is secured by a pipe clamp. A wedging groove 14 is provided on the top surface of the plate support 11, connecting to the water hole 12. The wedging 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 provided in the edge-running groove 14. The sponge is embedded in the edge-running groove 14 and has an interference fit with the groove wall. The polyurethane sponge is resistant to high temperatures above 150°C and has a water absorption rate of ≥200%. It can absorb the internal water and disperse it onto the wallboard.

[0038] In this embodiment, 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 tilt frame 3. The elastic sheet 15 is made of spring steel sheets with a thickness of 0.5-1 mm. 3-5 sheets are spaced apart along the length of the plate support 11. The ends of the elastic sheet 15 are fixed to the top surface of the tilt 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. When subjected to force, it can produce elastic deformation to cause the plate support 11 to tilt.

[0039] The interior of the plate holder 11 is provided with a closed hole 16 connecting the water hole 12 and the edge-smoothing groove 14. Both ends of the closed hole 16 are tapered openings 17 with a taper angle of 30-45 degrees. A spherical sealing bead 18 is movably mounted within the closed hole 16. The bead 18 is made of silicone rubber with a Shore hardness of 60-70. Its diameter is larger than the minimum diameter of the tapered opening 17, which is 0.5-1 mm. The bead 18 can roll freely within the closed hole 16. When the closed hole 16 is tilted, the bead 18 can fit against one side of the tapered opening 17 to achieve a seal.

[0040] In this embodiment, 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 drum 2. When the tilting frame 3 is in the rearward tilting state, the lowest point of the tilting frame 3 is higher than the top surface of the drum 2. When the gypsum wallboard is conveyed from the inlet drum 2 to the forward tilting frame 3, because the lowest point of the tilting frame 3 is lower than the top surface of the drum 2, the wallboard can naturally slide onto the tilting frame 3 under its own gravity, avoiding "stuck" or "hanging" problems and ensuring smooth conveying. When the wallboard loses weight due to drying, the tilting frame 3 switches to the rearward tilting state. Because the lowest point of the tilting frame 3 is higher than the top surface of the outlet drum 2, the wallboard can slide smoothly along the tilting frame 3 to the outlet drum 2.

[0041] In this embodiment, 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 friction resistance and mechanical impact between the protrusion 10 and the inclined groove wall, ensure that the flip frame 3 switches accurately and quickly according to the weightlessness state of the wall panel, and avoid wear and deformation of the protrusion 10 or the inclined groove wall due to long-term collision, thereby extending the service life of the core components of the device.

[0042] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, a flow control valve is connected to the end of water pipe 13 away from board support 11. This valve is fixed to the outer wall of drying box 1 via a bracket. The flow control valve can flexibly adjust the amount of water entering the water hole 12 of board support 11 according to the specifications of the gypsum wallboard, such as thickness, width, or drying process requirements. This prevents excessive water flow from wetting the wallboard edges or insufficient water flow from wetting the edges, ensuring that the "edge wetting and crack prevention" function is precisely adapted to different production needs. The bracket fixes the flow control valve to the outer wall of drying box 1, allowing operators to directly adjust the water flow without opening the drying box 1, avoiding temperature fluctuations inside the drying box due to frequent opening of the drying box 1. This also facilitates daily inspection and maintenance, reducing operational difficulty.

[0043] In this embodiment, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figures 5 to 10 As shown, the diameter of the closing bead 18 is larger than the minimum diameter of the tapered openings 17 at both ends of the closing hole 16, and the closing bead 18 is made of high-temperature resistant rubber material, so that when the plate support 11 tilts and causes the closing bead 18 to shift, it can fit tightly with the tapered opening 17 to form a seal. The closing bead 18 made of high-temperature resistant rubber material can resist high-temperature aging and deformation, and avoid the closing bead 18 losing elasticity or sealing performance due to high temperature, ensuring that the closing bead 18 can still stably realize the "seal-open" function under long-term high-temperature working conditions, thereby ensuring the reliability and service life of the edge-running structure.

[0044] A method for using a drying device for producing gypsum wallboards comprises the following steps: S1. Under the pushing action of the return spring 7 in the notch 5 of the shaft seat 4, the tilting frame 3 in the drying box 1 maintains a forward tilted state along the center line of the notch 5 toward the inlet side, with the inlet side lower and the side away from the inlet higher.

[0045] S2. The gypsum wallboard to be dried is conveyed to the front inclined turning frame 3 by the inlet side roller 2. The wallboard's own weight presses the turning frame 3, pushing the inserting 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 inserting plate 6 moves down to the bottom of the notch 5.

[0046] S3. During the downward movement of the plug board 6, the protrusion 10 on its surface slides along the central inclined groove 9 on the inner wall of the notch 5, driving the flip frame 3 to switch from the front inclined state to the horizontal horizontal state. The wall panel is laid stably on the panel support 11, and the drying box 1 heats and dries the horizontally placed wall panel.

[0047] S4. During the drying process, the water pipe 13 connected to the shaft seat 4 is opened to slowly supply water. The water flows into the edge moistening groove 14 through the water hole 12 and the closed hole 16 to replenish water for the four sides of the wall panel. If the water content on one side of the wall panel is higher and the weight is heavier, the board support 11 tilts toward that side along the elastic sheet 15, and the closed bead 18 on that side fits the tapered mouth 17 to block the water supply. If the water content on the other side is low and the board support 11 is lifted up, the water supply is maintained to achieve differentiated edge moistening.

[0048] S5. Continue drying until the moisture on the wall panel evaporates and the weight is reduced. When the weight of the wall panel is not enough to overcome the elastic force of the reset spring 7, the reset spring 7 pushes the plug plate 6 upward, and the plug plate 6 drives the protrusion 10 to leave the central inclined slot 9 and enter the rear inclined slot 8. The flip frame 3 switches from a horizontal state to a rear state tilted toward the outlet side, with the outlet side lower and the side away from the outlet higher.

[0049] S6, the rear inclined turning rack 3 makes the dried wallboard slide along its surface toward the outlet side roller 2, and the roller 2 transports the wallboard out through the outlet of the drying box 1.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for producing gypsum wallboard, characterized in that: The invention comprises a drying box (1) with an inlet and an outlet, wherein a roller (2) for conveying gypsum wallboards and a turning frame (3) located between two adjacent rollers (2) are provided in the drying box (1); The two sides of the turning frame (3) are rotatably connected to the drying box (1) through the shaft seat (4), the shaft seat (4) is provided with a notch (5), a plug plate (6) inserted into the notch (5) is fixedly provided at the bottom of the turning frame (3), and a return spring (7) for driving the plug plate (6) to move upward is provided in the notch (5); The turning frame (3) and the inserting plate (6) are positioned forward of the entrance along the center line of the notch (5), and when positioned forward, the turning frame (3) is tilted toward the entrance side; The inner wall of the notch (5) is provided with a rear oblique groove (8), the bottom of the rear oblique groove (8) is connected to the central oblique groove (9), and the inserting plate (6) is fixed with a protrusion (10); When the insert plate (6) moves down to the bottom of the groove, the protrusion (10) drives the flip frame (3) to be horizontally placed along the central inclined groove (9); After the gypsum wallboard on the turning frame (3) is dried and loses weight, the protrusion (10) enters the rear inclined groove (8) to drive the turning frame (3) to move backward, and the turning frame (3) tilts toward the outlet side when it moves backward.

2. A drying device for producing gypsum wallboard according to claim 1, characterized in that: The turning frame (3) is provided with a hollow rectangular plate support (11), a water hole (12) is opened in the plate support (11), the shaft seat (4) is plugged with a water pipe (13), the water pipe (13) passes through the plate support (11) and is connected to the water hole (12), and a wetting groove (14) is opened on the top surface of the plate support (11) and is connected to the water hole (12).

3. A drying device for producing gypsum wallboard according to claim 2, characterized in that: An elastic sheet (15) is provided between the plate support (11) and the turnover frame (3); The plate support (11) has a closed hole (16) formed therein, and both ends of the closed hole (16) are connected to a water hole (12) and a run-edge groove (14) and are both tapered openings (17). A closed bead (18) is movably provided in the closed hole (16).

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

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

6. A drying device for producing gypsum wallboard according to claim 5, characterized in that: The end of the water pipe (13) away from the plate support (11) is connected to the flow regulating valve, and a bracket is fixed to 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 producing gypsum wallboard according to claim 6, characterized in that: The diameter of the closing bead (18) is larger than the minimum diameter of the tapered opening (17) of the closing hole (16), and is made of high-temperature resistant rubber material.

8. A method for using a drying device for producing gypsum wallboards, using the drying device for producing gypsum wallboards according to claim 7, characterized in that: The steps include: S1, the tilting frame (3) is kept in a forward tilted state with the inlet side low and away from the inlet side high under the action of the return spring (7); S2, the wallboard to be dried is transported to the turning frame (3) through the inlet side roller (2), and the weight of the wallboard pushes the inserting plate (6) down to the bottom of the notch (5); S3, the protrusion (10) of the insert plate (6) slides along the central inclined groove (9), the turning frame (3) switches to a horizontal state, and the drying box (1) heats and dries the wall panel; S4, water pipe (13) supplies water, and the water flows into the edge-wetting groove (14) through the water hole (12) and the closed hole (16); when the moisture content of the wallboard is uneven, the board support (11) is tilted so that the closed beads (18) on the high moisture content side are cut off from water and the low moisture content side is continuously replenished with water; S5, after the wallboard is dried and loses weight, the return spring (7) pushes the insert plate (6) upward, the protrusion (10) enters the rear inclined slot (8), and the tilting frame (3) switches to the rear inclined state with the outlet side lower; S6, the dried wallboard slides along the rear inclined turning frame (3) to the outlet side roller (2), and is transported and discharged through the outlet.

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