PP flame-retardant plate drying equipment

Abstract

The invention relates to the technical field of PP flame-retardant plate production, in particular to PP flame-retardant plate drying equipment which comprises a fixed support, a conveying belt, a drying bin, a partition plate, a placement seat, a drying machine and the like, the drying bin is arranged on the fixed support, the sliding partition plate divides the drying bin into a drying chamber and a waste heat chamber, and the drying machine is arranged in the drying chamber; a conveying belt is arranged in the fixing support and penetrates through the drying bin, and placing bases are arranged on the conveying belt at equal intervals. The transmission shaft drives the transmission rod piece to reciprocate through the end eccentric disc, the transmission rod piece drives the synergistic blades to regularly swing, and the synergistic blades uniformly guide heat in the dryer to the PP flame-retardant plate, so that centralized drying points in traditional drying equipment are eliminated, the PP flame-retardant plate can be comprehensively and uniformly dried, and the drying efficiency is improved. The placing seat pushes the contact rod to move upwards and reduces the rotating speed of the conveying belt through the speed adjusting assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of PP flame retardant board production, and particularly to a drying device for PP flame retardant boards. Background Art

[0002] The PP flame retardant board, also known as the polypropylene flame retardant board, is a plastic board with special flame retardant properties. By adding flame retardant masterbatch or other flame retardants to the polypropylene (PP) substrate, the board can quickly self-extinguish when encountering a fire source, thus achieving the flame retardant effect. The PP flame retardant board has the characteristics of high stiffness, high hardness, and high strength, and also has excellent heat resistance, chemical stability, and electrical properties. Its working temperature range is wide, and it can maintain stable performance from 0 degrees to 100 degrees. In addition, the PP flame retardant board also has the advantages of light weight, easy processing, and welding, making it widely used in many fields such as chemical industry, electroplating, electronic appliances, machinery, water treatment, mining, construction, and advertising.

[0003] However, in the production and processing of PP flame retardant boards, the drying link is a problem that cannot be ignored. At present, the drying points of PP flame retardant boards on many production lines are relatively concentrated, resulting in uneven heat distribution during the drying process of the boards. Specifically, too high a temperature may cause the decomposition or volatilization of the flame retardant or other additives in the PP flame retardant board, thus reducing its flame retardant performance. At the same time, high temperature may also cause defects such as deformation and cracking of the board, further affecting its use effect. This uneven drying method will cause the temperature of some parts of the PP flame retardant board to be too high, and working at too high a temperature for a long time will also accelerate the aging process of the PP flame retardant board, thus affecting its overall performance and service life.

[0004] Based on the disadvantages of the existing drying equipment, there is an urgent need to design a device that can improve the drying quality of PP flame retardant boards. Summary of the Invention

[0005] In order to overcome the disadvantages that the drying points of the existing drying equipment are fixed, resulting in uneven drying of PP flame retardant boards and affecting the subsequent flame retardant effect, the present invention provides a drying device for PP flame retardant boards with uniform drying.

[0006] Technical solution: A PP flame retardant board drying equipment, including a fixed support, a conveyor belt, a drying bin, a partition, a placement seat and a dryer. The drying bin is arranged on the fixed support, and the sliding partition divides the drying bin into a drying chamber and a residual temperature chamber. The drying chamber is provided with a dryer, and the dryer is symmetrically arranged. The dryer is located on the side wall of the drying chamber. A conveyor belt is arranged in the fixed support, and the conveyor belt passes through the drying bin. Placement seats are equidistantly arranged on the conveyor belt. It also includes a power source, an eccentric disk, a transmission rod, an efficiency-enhancing blade, a contact rod and a speed regulation assembly. The transmission shaft is rotatably arranged in the fixed support, and the transmission shaft is powered by the power source. An eccentric disk is arranged at the end of the transmission shaft. The dryer is provided with swinging efficiency-enhancing blades. The eccentric disk drives the efficiency-enhancing blades to swing regularly through the transmission rod. The efficiency-enhancing blades evenly guide the heat output by the dryer to the surface of the PP flame retardant board. The contact rod is slidably connected in the fixed support, specifically located at the corresponding position of the drying chamber. A speed regulation assembly is connected between the contact rod and the conveyor belt. The placement seat can contact and push the contact rod, and the contact rod adjusts the rotation speed of the conveyor belt through the speed regulation assembly.

[0007] As a further preferred solution, the speed regulation assembly consists of a chainring, a flywheel, a toggle plate, a chain and a displacement unit. The chainring is connected to the end of the transmission shaft by a key. The flywheel is a double chainring, which is connected to the end of the rotating shaft of the conveyor belt by a key. The toggle plate is connected to the contact rod. A displacement unit is connected between the toggle plate and the contact rod. The chain is sleeved on the chainring, flywheel and toggle plate.

[0008] As a further preferred solution, the displacement unit consists of a control rod, a bevel control block and an adapter bracket. The control rod is fixed to the contact rod, the adapter bracket is slidably connected in the fixed support, and the adapter bracket and the control rod are slidably connected. The toggle plate is rotatably connected between the adapter bracket and the control rod, and the bevel control block is connected between the rotating shaft of the toggle plate and the control rod.

[0009] As a further preferred solution, a 45-degree oblique slot is provided on the oblique slot control block, and when the control rod moves upward, the dial is driven to move horizontally.

[0010] As a further preferred solution, it also includes a threaded rod and a shift block. The threaded rod is symmetrically arranged and rotatably connected to both sides of the fixed support. The partition is connected to the threaded rod through threads. The lower end of the threaded rod is fixed with a shift block. The placement seat can contact and push the shift block to push the threaded rod to rotate, and then the thread groove opened on the thread drives the partition to move upward. A torsion spring is connected between the threaded rod and the fixed support.

[0011] As a further preferred solution, it also includes a locking slide, a locking block, a wedge block and a moving block. The locking slide is symmetrically arranged in a fixed support, specifically located in the afterglow chamber. The locking block is slidably connected to one end of the locking slide. The moving block is fixed to the locking block through a connecting rod and is slidably connected to the other end of the locking slide. The wedge block is slidably connected to the side of the locking slide and the sliding path is perpendicular to the moving block. The wedge block is in frictional contact with the moving block, and the placement seat can contact and push the wedge block to move.

[0012] As a further preferred solution, the placement seat consists of a shock-absorbing base and an auxiliary plate. The bottom of the placement seat is a telescopic shock-absorbing base, specifically a telescopic rod with a built-in spring. The upper part of the shock-absorbing base is a base, and the base is provided with at least one placement slot. An auxiliary plate connected by a hinge is provided on the side of the base, and the base is made of high-temperature resistant hard rubber material.

[0013] As a further preferred solution, it also includes a sealing soft plate, which is arranged at both ends of the drying chamber and is made of soft rubber.

[0014] The present invention has the following advantages: 1. The transmission shaft drives the transmission rod to move back and forth through the eccentric disk at the end, and the transmission rod drives the efficiency-enhancing blades to swing regularly. The efficiency-enhancing blades evenly guide the heat in the dryer to the PP flame-retardant board, thereby eliminating the concentrated drying points in traditional drying equipment, so that the PP flame-retardant board can be dried comprehensively and evenly. At the same time, the placement seat pushes the contact rod to move upward and reduces the rotation speed of the conveyor belt through the speed regulating component, so that the placement seat passes through the dryer at a low speed, thereby improving the drying effect of the dryer on the PP flame-retardant board.

[0015] 2. A residual temperature chamber is set up to carry out sub-low temperature drying of the PP flame retardant board. The placement seat pushes the dial block and then drives the threaded rod to rotate. The threaded rod will drive the partition to move upward to provide space for the placement seat and the PP flame retardant board to pass through. The wedge block and the lock block cooperate with each other to limit the dial block and then release it, providing an automatic lifting effect of the partition, so that the heat in the drying room can be continuously guided to the residual temperature chamber, which not only improves the protection of the PP flame retardant board, but also can further and comprehensively dry the PP flame retardant board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a cross-sectional view of the three-dimensional structure of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the placement seat of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the power source and the eccentric disk of the present invention.

[0020] Figure 5 This is a three-dimensional structural schematic diagram of the dryer, transmission rod and efficiency-enhancing blade of the present invention.

[0021] Figure 6 This is a three-dimensional structural schematic diagram of the speed regulation component of the present invention.

[0022] Figure 7 This is a three-dimensional structural schematic diagram of the contact rod, sprocket, flywheel and toggle rod of the present invention.

[0023] Figure 8 This is a three-dimensional structural schematic diagram of the threaded rod and partition plate of the present invention.

[0024] Figure 9 This is a three-dimensional structural schematic diagram of the locking chute, lock block and wedge block of the present invention.

[0025] Wherein: 1 - fixed support, 2 - conveyor belt, 201 - drive shaft, 3 - drying chamber, 301 - drying room, 302 - residual heat room, 4 - placement seat, 401 - shock-absorbing base, 402 - placement groove, 403 - auxiliary plate, 5 - dryer, 6 - power source, 7 - eccentric disk, 8 - transmission rod, 9 - efficiency-enhancing blade, 10 - contact rod, 11 - speed regulation component, 12 - sprocket, 13 - flywheel, 14 - toggle disk, 15 - chain, 16 - control rod, 17 - inclined groove control block, 18 - adapter bracket, 19 - partition plate, 20 - threaded rod, 21 - toggle block, 22 - locking chute, 23 - lock block, 24 - wedge block, 2401 - moving block, 25 - sealing soft plate. Detailed implementation manners

[0026] The following further describes the present invention in conjunction with specific embodiments. It should also be noted that unless otherwise clearly specified and limited, terms such as: setting, installation, connection, and coupling 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] Embodiment: A drying device for PP flame-retardant boards, as Figures 1-8As shown, it includes a fixed support 1, a conveyor belt 2, a drying chamber 3, a partition 19, a placement seat 4 and a dryer 5. The drying chamber 3 is set on the fixed support 1. The sliding partition 19 divides the drying chamber 3 into a drying chamber 301 and a residual temperature chamber 302. The drying chamber 301 is provided with a dryer 5. The dryer 5 is symmetrically arranged and located on the side wall of the drying chamber 301. The fixed support 1 is provided with a conveyor belt 2, which passes through the drying chamber 3. Four groups of three parallel placement seats 4 are arranged equidistantly in the conveyor belt 2, and Each placement seat 4 is provided with four placement slots 402, so that 12 PP flame retardant boards can be dried at the same time. It also includes a power source 6, an eccentric disk 7, a transmission rod 8, an efficiency-enhancing blade 9, a contact rod 10 and a speed regulating assembly 11. The transmission shaft 201 is rotatably arranged in the fixed support 1, and the transmission shaft 201 is powered by the power source 6. In this embodiment, the power source 6 is a servo motor fixedly connected to the fixed support 1, and an eccentric disk 7 is provided at the end of the transmission shaft 201. The dryer 5 is provided with a swinging efficiency-enhancing blade 9, and the eccentric disk 7 is provided at the end of the transmission shaft 201. The eccentric disk 7 drives the efficiency-enhancing blades 9 to swing regularly through the transmission rod 8. The transmission rod 8 is a two-link rod vertically and slidably connected to each other. The lower end of the transmission rod 8 is rotatably connected to the eccentric disk 7, and the upper end of the transmission rod 8 is rotatably connected to the end of the efficiency-enhancing blade 9. The ends of the efficiency-enhancing blades 9 are all set to be disc-shaped, and the upper end of the transmission rod 8 is connected to the eccentricity of the disc at the end of the efficiency-enhancing blade 9. Therefore, when the eccentric disk 7 drives the transmission rod 8 to move up and down regularly, the transmission rod 8 can drive the efficiency-enhancing blades 9 to swing back and forth, and the efficiency-enhancing blades 9 will dry the machine. 5 outputs heat evenly to the surface of the PP flame retardant board, thereby eliminating the concentrated drying point of traditional drying equipment. The contact rod 10 is slidably connected in the fixed support 1, specifically located at the corresponding position of the drying chamber 301. A speed regulating component 11 is connected between the contact rod 10 and the conveyor belt 2. The placement seat 4 can contact and push the contact rod 10. The contact rod 10 adjusts the rotation speed of the conveyor belt 2 through the speed regulating component 11, so that the PP flame retardant board can pass through the drying chamber 301 at a low speed. Combined with the swing effect of the synergistic blades 9, the drying quality of the dryer 5 is improved.

[0028] like Figure 6 and Figure 7As shown in the figure, the speed regulation assembly 11 is composed of a chainring 12, a freewheel 13, a toggle disc 14, a chain 15 and a displacement unit. The chainring 12 is connected to the end of the transmission shaft 201 by a key. The freewheel 13 is a double-chainring, and the freewheel 13 is connected to the end of the rotating shaft of the conveyor belt 2 by a key. The toggle disc 14 is connected to the contact rod 10, and a displacement unit is connected between the toggle disc 14 and the contact rod 10. The chain 15 is sleeved on the chainring 12, the freewheel 13 and the toggle disc 14. The displacement unit is composed of a control rod 16, an inclined groove control block 17 and an adapter bracket 18. The control rod 16 is fixedly connected to the contact rod 10. The adapter bracket 18 is slidably connected in the fixed support 1, and the adapter bracket 18 is slidably connected to the control rod 16. The toggle disc 14 is rotatably connected between the adapter bracket 18 and the control rod 16. An inclined groove control block 17 is connected between the rotating shaft of the toggle disc 14 and the control rod 16. A 45-degree inclined groove is opened on the inclined groove control block 17. When the control rod 16 moves upward, it drives the toggle disc 14 to move horizontally. Specifically, the placement seat 4 rotates clockwise with the conveyor belt 2. After the placement seat 4 enters the drying chamber 301, it pushes the contact rod 10 upward. The contact rod 10 pushes the toggle disc 14 forward through the inclined groove control block 17. After the toggle disc 14 moves forward, it drives the chain 15 to perform gear shifting on the freewheel 13. The chain 15 will shift from the small-diameter gear of the freewheel 13 to the large-diameter gear. At this time, the angular velocity of the rotating shaft of the conveyor belt 2 decreases, and the speed of the conveyor belt 2 decreases. The PP flame-retardant board located in the placement seat 4 will pass through the drying chamber 301 at a low speed, so as to perform efficient drying. When the placement seat 4 leaves the drying chamber 301, the placement seat 4 disengages from the contact rod 10, the contact rod 10 will move downward to reset, and the chain 15 will also reset from the large-diameter gear of the freewheel 13 to the small-diameter gear, and the speed of the conveyor belt 2 will increase to the initial state.

[0029] As Figure 3 shown, the placement seat 4 is composed of a shock-absorbing base 401 and an auxiliary plate 403. The bottom of the placement seat 4 is a telescopic shock-absorbing base 401, specifically a telescopic rod with a spring inside. The upper part of the shock-absorbing base 401 is a base. Four placement grooves 402 are opened on the base. An auxiliary plate 403 is arranged on the side of the base and is rotatably connected by a hinge. The base is made of high-temperature-resistant hard rubber material. The PP flame-retardant board can be efficiently clamped through the rubber material. The rotatable auxiliary plate 403 arranged on the right side of the base can protect the end of the PP flame-retardant board in the advancing direction, reducing external damage to the finished product and affecting subsequent sales.

[0030] As Figure 8 and Figure 9As shown in the figure, it further includes a threaded rod 20, a dial block 21, a locking slideway 22, a lock block 23, a wedge block 24 and a moving block 2401. The threaded rods 20 are symmetrically arranged and rotatably connected to both sides of the fixed support 1. The partition plate 19 is connected to the threaded rod 20 by threads. The lower end of the threaded rod 20 is fixedly connected with the dial block 21. The placing seat 4 can contact and push the dial block 21, thereby driving the threaded rod 20 to rotate. Then, the partition plate 19 is driven to move upward by the thread groove formed on the thread. The locking slideways 22 are symmetrically arranged in the fixed support 1, specifically located in the afterheating chamber 302. The lock block 23 is slidably connected to one end of the locking slideway 22. The moving block 2401 is fixedly connected to the lock block 23 by a connecting rod and is slidably connected to the other end of the locking slideway 22. The wedge block 24 is slidably connected to the side of the locking slideway 22 and its sliding path is perpendicular to the moving block 2401. An inclined surface in contact with the wedge block 24 is provided on the moving block 2401. The wedge block 24 is in frictional contact with the moving block 2401. The placing seat 4 can contact and push the wedge block 24 to move. A torsion spring is connected between the threaded rod 20 and the fixed support 1. Therefore, after the placing seat 4 and the PP flame retardant board thereon are dried in the drying chamber 301, they enter the afterheating chamber 302. During this period, the placing seat 4 will first push the dial block 21 to cause the threaded rods 20 to rotate towards each other. As a result, the partition plate 19 moves upward, providing a space for the placing seat 4 and the PP flame retardant board to pass through. Then, the dial block 21 is limited by the lock block 23. The placing seat 4 continues to move to the right to the wedge block 24. The placing seat 4 pushes the wedge block 24 to translate. The wedge block 24 pushes the moving block 2401 to make a corresponding vertical movement path through the inclined surface. The moving block 2401 will pull the lock block 23 to move synchronously. The lock block 23 thus disengages from the dial block 21 and releases the limit on it. The threaded rod 20 will rotate and reset under the action of the torsion spring, and the partition plate 19 will also fall to separate the drying chamber 301 and the afterheating chamber 302. The heat in the drying chamber 301 enters the afterheating chamber 302 when the partition plate 19 rises. The afterheating chamber 302 will continuously perform sub-low temperature drying on the PP flame retardant board in the placing seat 4, serving as the final stage of the drying process. This not only improves the protection of the PP flame retardant board but also can further dry the PP flame retardant board.

[0031] As Figure 1 and Figure 2 shown in the figure, it further includes a sealing soft board 25. The sealing soft board 25 is arranged at both ends of the drying bin 3. The sealing soft board 25 is made of soft rubber. The sealing soft board 25 can seal the drying chamber 301 and the afterheating chamber 302 of the drying bin 3 to prevent heat leakage. Moreover, the use of soft rubber material facilitates the passing of the placing seat 4 and the PP flame retardant board.

[0032] The working principle of the embodiment of the present invention is as follows: the PP flame retardant board is fixed in the placement seat 4, and a total of three rows of placement seats 4 arranged in the same direction and four groups of equidistantly arranged are provided in the conveyor belt 2, and four placement slots 402 are provided in the placement seat 4, so that 12 PP flame retardant boards can be dried at the same time. Taking any row of placement seats 4 as an example, the power source 6 is turned on to drive the transmission shaft 201 to rotate, and the transmission shaft 201 drives the conveyor belt 2 to rotate clockwise through the speed regulating component 11. The placement seat 4 pushes the left sealing soft plate 25 to enter the drying chamber 301, and the transmission shaft 201 drives the transmission rod 8 to move through the end eccentric disk 7, and the transmission rod 8 drives the efficiency-enhancing blade 9 to swing back and forth. , the efficiency-enhancing blades 9 evenly guide the heat in the dryer 5 to the PP flame retardant board, thereby eliminating the concentrated drying points in traditional drying equipment, so that the PP flame retardant board can be dried comprehensively and evenly. After the placement seat 4 enters the drying chamber 301, it pushes the contact rod 10 to move upward, and the contact rod 10 pushes the toggle disk 14 to move forward. The toggle disk 14 thereby pushes the chain 15 from the small diameter gear of the flywheel 13 to the large diameter gear, thereby reducing the rotation speed of the conveyor belt 2, so that the placement seat 4 passes through the drying chamber 301 at a low speed, thereby improving the drying efficiency of the dryer 5. After the placement seat 4 continues to move to the right to disengage from the contact rod 10, the contact rod 10 moves downward to reset, and the toggle disk 14 is synchronously translated backward and reset, and the chain 15 moves to the small diameter gear of the flywheel 13 again. The conveyor belt 2 will speed up and rotate, so that the placement seat 4 is quickly moved from the drying chamber 301 to the residual temperature chamber 302. During this period, the placement seat 4 pushes the shift block 21 to rotate, and then drives the threaded rod 20 to rotate. The threaded rod 20 will drive the partition 19 to move upward to provide space for the placement seat 4 and the PP flame retardant board to pass through, and then the shift block 21 is limited by the lock block 23. The placement seat 4 continues to move to the right to the wedge block 24. The placement seat 4 pushes the wedge block 24 to translate, and the wedge block 24 pushes the moving block 2401 to make a corresponding vertical moving path. The moving block 2401 will pull the lock The block 23 moves synchronously, and the locking block 23 is thereby disengaged from the shifting block 21 and its limit is released. The threaded rod 20 will rotate and reset under the action of the torsion spring, and the partition 19 will also fall to separate the drying chamber 301 and the residual temperature chamber 302. The heat in the drying chamber 301 enters the residual temperature chamber 302 when the partition 19 rises. The residual temperature chamber 302 will continue to perform sub-low temperature drying on the PP flame retardant board in the placement seat 4. This serves as the final stage of the drying process, which not only improves the protection of the PP flame retardant board, but also can further dry the PP flame retardant board. Finally, the placement seat 4 pushes away the right side sealing soft plate 25 to leave the residual temperature chamber 302, and the drying process is completed.

[0033] The above embodiments are provided to persons familiar with the art for implementing or using the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the scope of protection of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A drying device for a PP flame-retardant board, comprising a fixed support (1), a conveyor belt (2), a drying chamber (3), a partition plate (19), a placing seat (4) and a dryer (5). The drying chamber (3) is arranged on the fixed support (1). The slidably arranged partition plate (19) divides the drying chamber (3) into a drying room (301) and a residual heat room (302). A dryer (5) is arranged in the drying room (301). A conveyor belt (2) is arranged in the fixed support (1). The conveyor belt (2) passes through the drying chamber (3). A placing seat (4) is arranged on the conveyor belt (2). It is characterized in that, The invention also includes a power source (6), an eccentric disk (7), a transmission rod (8), an efficiency-enhancing blade (9), a contact rod (10) and a speed regulating assembly (11). The transmission shaft (201) is rotatably arranged in the fixed support (1). The transmission shaft (201) is powered by the power source (6). An eccentric disk (7) is arranged at the end of the transmission shaft (201). The dryer (5) is provided with a swinging efficiency-enhancing blade (9). The eccentric disk (7) drives the efficiency-enhancing blade (9) to swing regularly through the transmission rod (8). The contact rod (10) is slidably connected in the fixed support (1) and is specifically located at a corresponding position in the drying chamber (301). The speed regulating assembly (11) is connected between the contact rod (10) and the conveyor belt (2). The placement seat (4) can contact and push the contact rod (10). The contact rod (10) adjusts the rotation speed of the conveyor belt (2) through the speed regulating assembly (11).

2. The drying equipment for a PP flame-retardant board according to claim 1, characterized in that, The speed regulating assembly (11) is composed of a toothed disc (12), a flywheel (13), a toggle disc (14), a chain (15) and a displacement unit. The toothed disc (12) is connected to the end of the transmission shaft (201) through a key. The flywheel (13) is a double toothed disc. The flywheel (13) is connected to the end of the rotating shaft of the conveyor belt (2) through a key. The toggle disc (14) is connected to the contact rod (10). The displacement unit is connected between the toggle disc (14) and the contact rod (10). The chain (15) is sleeved on the toothed disc (12), the flywheel (13) and the toggle disc (14).

3. The drying equipment for a PP flame-retardant board according to claim 2, characterized in that, The displacement unit is composed of a control rod (16), a chute control block (17) and an adapter bracket (18). The control rod (16) is fixed to the contact rod (10). The adapter bracket (18) is slidably connected in the fixed support (1), and the adapter bracket (18) and the control rod (16) are slidably connected. The toggle plate (14) is rotatably connected between the adapter bracket (18) and the control rod (16). The chute control block (17) is connected between the rotating shaft of the toggle plate (14) and the control rod (16).

4. A PP flame retardant board drying device according to claim 3, characterized in that, An oblique slot is provided on the oblique slot control block (17), and when the control rod (16) moves upward, the toggle plate (14) is driven to move horizontally.

5. A drying device for a PP flame-retardant board according to claim 4, characterized in that, The utility model also includes a threaded rod (20) and a shift block (21), the threaded rod (20) is symmetrically arranged and rotatably connected to both sides of the fixed support (1), the partition (19) is connected to the threaded rod (20) by a thread, the lower end of the threaded rod (20) is fixedly connected with the shift block (21), the placement seat (4) can contact and push the shift block (21), thereby pushing the threaded rod (20) to rotate, and then the thread groove opened on the thread drives the partition (19) to move upward, and a torsion spring is connected between the threaded rod (20) and the fixed support (1).

6. The drying equipment for a PP flame retardant board according to claim 5, characterized in that, It further includes a locking slideway (22), a lock block (23), a wedge block (24) and a moving block (2401). The locking slideway (22) is symmetrically arranged in the fixed support (1). The lock block (23) is slidably connected to one end of the locking slideway (22). The moving block (2401) is fixedly connected to the lock block (23) through a connecting rod and is slidably connected to the other end of the locking slideway (22). The wedge block (24) is slidably connected to the side of the locking slideway (22). The wedge block (24) is in frictional contact with the moving block (2401). The placing seat (4) can contact and push the wedge block (24) to move.

7. A drying device for a PP flame-retardant board according to claim 6, characterized in that, The placing seat (4) is composed of a shock-absorbing base (401) and an auxiliary plate (403). The bottom of the placing seat (4) is the telescopic shock-absorbing base (401), specifically a telescopic rod with a spring inside. The upper part of the shock-absorbing base (401) is a base, and at least one placing groove (402) is formed in the base. An auxiliary plate (403) is arranged on the side of the base and is rotatably connected through a hinge.

8. A PP flame retardant board drying device according to claim 7, characterized in that, It further includes a sealing soft plate (25), and the sealing soft plate (25) is arranged at both ends of the drying bin (3).

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