Fiber-reinforced calcium silicate rock board production line

Abstract

The invention discloses a fiber reinforced calcium silicate rock board production line. The fiber reinforced calcium silicate rock board production line comprises a pulping system, a vertical flow slurry forming machine, a pre-curing chamber and a vertical autoclaved curing system which are sequentially connected through a central conveying system. The vertical autoclaved curing system comprises a vertical autoclave, a lifting mechanism arranged in the vertical autoclave, a driving mechanism arranged above the vertical autoclave and used for controlling the lifting mechanism to rotate, a linear displacement mechanism arranged below the vertical autoclave, and a sliding seat in transmission connection with the linear displacement mechanism, and the plate placing frame is detachably connected to the sliding seat. The plates are placed on the plate placing frame one by one, the plate placing frame enters from the bottom of the vertical still kettle through the lifting mechanism, the plates do not need to be manually placed into the kettle one by one, after maintenance is finished, the plates do not need to be manually taken out, automatic feeding and discharging are achieved, the maintenance efficiency is improved, and meanwhile danger is reduced.

Description

Technical Field

[0001] This invention relates to the field of slab production technology, specifically to a fiber-reinforced calcium silicate slab production line. Background Technology

[0002] Fiber-reinforced calcium silicate slab is a lightweight, high-strength building material made from siliceous materials, calcareous materials, and fibers as main raw materials, through processes such as pulping, molding, and autoclaving. It is widely used in interior and exterior walls, floors, fireproof partitions, and other fields.

[0003] Traditional fiber-reinforced calcium silicate board production lines typically employ a process route of "slurry forming - stacking - steam curing - unstacking". The steam curing stage presents the following main problems: (1) Generally, the material is loaded and unloaded manually from the side of the autoclave. This is not only labor-intensive and inefficient, but also prone to accidents. (2) After the board is sent to the autoclave, it cannot rotate inside the autoclave, resulting in uneven heating of the board and affecting the consistency of product performance. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a fiber-reinforced calcium silicate slab production line that is compact, highly automated, energy-efficient, and produces stable product quality.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A fiber-reinforced calcium silicate slab production line includes a pulping system, a vertical flow forming machine, a pre-curing chamber, and a vertical autoclaving system, sequentially connected by a central conveying system. The vertical flow forming machine includes a slurry silo, a forming mesh box, and a circulating filter belt for forming continuous wet-process slab blanks. The pre-curing chamber, located downstream of the vertical flow forming machine, is used for preliminary solidification of the wet-process slab blanks.

[0006] The vertical autoclave curing system includes a vertical autoclave, a lifting mechanism inside the autoclave, a drive mechanism above the autoclave for controlling the rotation of the lifting mechanism, a linear displacement mechanism below the autoclave, a slide connected to the linear displacement mechanism, and a plate placement rack detachably connected to the slide. After preliminary curing, the plates are placed on the plate placement rack. The linear displacement mechanism controls the plate placement rack to reach below the autoclave. The lifting mechanism then lifts the plate placement rack and sends it into the autoclave for further heating and pressurization, achieving comprehensive curing.

[0007] The vertical autoclave has a pressure-bearing shell that is vertically arranged and open at the bottom, and steam inlet pipes are connected to the lower parts of both sides of the pressure-bearing shell.

[0008] The lifting mechanism includes a support frame, a hydraulic cylinder, an adapter plate, a sleeve, a lifting rod, and a lifting block. The support frame is installed on the top of the pressure-bearing housing. The hydraulic cylinder is installed on the support frame, and the telescopic end of the hydraulic cylinder is rotatably connected to the adapter plate via a bearing. The upper end of the lifting rod is fixedly connected to the bottom surface of the adapter plate. The sleeve is rotatably connected to the top of the pressure-bearing housing via a bearing, and the lifting rod is splined inside the sleeve. Specifically, the outer wall of the lifting rod is provided with an external spline, the length of which is slightly less than the length of the lifting rod. The inner wall of the sleeve is provided with a spline groove that matches the external spline. The external spline is slidably disposed within the spline groove, allowing the lifting rod to slide within the sleeve. When the sleeve rotates, it drives the lifting rod to rotate together. The lifting block is fixedly connected to the lower end of the lifting rod and is located inside the pressure-bearing housing. The bottom surface of the lifting block is provided with a through-groove, and the two sides of the bottom surface of the lifting block are provided with relatively extending locking blocks.

[0009] The plate placement rack includes a base, a sealing plug, and support plates. The base is detachably connected to a slide. The sealing plug is square and fixedly connected to the outer periphery of the top surface of the base. The dimensions of the base are the same as those of the pressure-bearing housing, and the dimensions of the sealing plug are the same as those of the inner cavity of the pressure-bearing housing. When the base contacts the bottom of the pressure-bearing housing, the sealing plug inserts into the pressure-bearing housing and fits tightly against the inner wall of the housing, improving sealing. A bearing plate is provided on the base inside the sealing plug. A rotating column is fixed to the bottom surface of the bearing plate, and the rotating column is rotatably connected to the base via a bearing. Two support plates are symmetrically fixed to the bearing plates. Opposite surfaces at the upper ends of the two support plates have outwardly extending positioning blocks that cooperate with locking blocks and slots. The positioning blocks are inserted between the locking blocks and slots. When the lifting block is pulled upward, the plate placement rack can be raised together through the cooperation of the positioning blocks with the slots and blocks. Multiple sets of L-shaped placement plates are fixed to the opposite surfaces of the two support plates. Plates are placed on the placement plates and arranged vertically. The support plate has ventilation holes between adjacent placement plates, which allows steam to enter between the two support plates and provide steam between the adjacent plates.

[0010] Preferably, the plate placement rack further includes a limiting mechanism to prevent the support plate from rotating. The limiting mechanism includes a lifting lug, a limiting post, a cam, a transmission rod, and a first motor. Lifting lugs are connected to both sides of the support plate, and limiting holes are formed on the lifting lugs. A driving cavity is provided inside the base, and two through holes communicating with the driving cavity are provided at the top of the base. Two limiting posts are slidably disposed within the two through holes. The transmission rod is rotatably connected to the driving cavity, and two cams are fixedly connected to the transmission rod, each located below one of the limiting posts. The first motor is installed outside the base and is drively connected to one end of the transmission rod. The rotation of the cams pushes the limiting posts to slide up and down within the through holes, inserting or disengaging them from the limiting holes on the lifting lugs. When the plate placement rack operates on the linear displacement mechanism, the upper end of the limiting post is inserted into the limiting hole to prevent the rotating column from rotating. Once the plate placement rack enters the vertical autoclave, the first motor rotates, driving the transmission rod to rotate. The transmission rod then drives the cam to rotate, causing the limit post to slide downwards and leave the limit hole. At this point, the lifting lug separates from the limit post, and the rotating column can then be driven to rotate via the drive mechanism.

[0011] Preferably, the driving mechanism includes a second motor, a first gear, and a second gear. The first motor is mounted on the top of the pressure-bearing housing, the first gear is fixedly connected to the motor shaft of the second motor, and the second gear is fixedly connected to the sleeve. The first gear meshes with the second gear. By controlling the operation of the second motor, and through the cooperation of the first and second gears, the sleeve can be driven to rotate.

[0012] Preferably, the linear displacement mechanism includes two bearing seats fixedly connected to the base surface, a lead screw rotatably connected to the two bearing seats via bearings, a guide rail disposed on the base surface, and a third motor mounted on the base surface. The third motor is drively connected to one end of the lead screw. The slide block has a threaded hole and is threadedly connected to the lead screw through the threaded hole. The bottom surface of the slide block has a sliding groove and is slidably connected to the guide rail through the sliding groove. Controlling the third motor to operate and drive the lead screw to rotate will drive the slide block to move linearly along the guide rail.

[0013] Preferably, the bottom surface of the slide is fixed with multiple positioning rods, and the bottom surface of the base is provided with positioning grooves that match the positioning rods. The base is installed on the positioning rods of the slide through the positioning grooves, which can prevent the base from shaking or falling off, and facilitate the lifting mechanism to lift the plate placement rack upwards and separate it from the slide.

[0014] Preferably, the top of the pressure-bearing housing is connected to an exhaust pipe, and the exhaust pipe is equipped with an exhaust valve. Opening the exhaust valve allows the steam to be discharged to the waste gas treatment equipment for treatment of the waste gas.

[0015] Preferably, a pressure relief pipe is connected to the top of the pressure-bearing shell, and a pressure gauge and a pressure relief valve are installed on the pressure relief pipe. The pressure gauge can display the gas pressure inside the vessel. When the gas pressure is too high, the pressure relief valve is opened, and when the gas pressure reaches the set value, the pressure relief valve is closed.

[0016] Preferably, the slide is provided with a first position sensor, and the base surface is provided with a second position sensor that cooperates with the first position sensor. The second position sensor is located below the pressure-bearing housing. When the first position sensor reaches a set distance from the second position sensor, the plate placement rack is fully engaged with the lifting mechanism.

[0017] Preferably, it also includes a central control room, which is equipped with a PLC controller. The central conveying system, the pulping system, the vertical flow forming machine, the pre-curing chamber, and the vertical autoclaving system are all electrically connected to the PLC controller.

[0018] Compared with the prior art, the present invention has the following beneficial effects: (1) The boards are placed one by one on the board placement rack, which enters from the bottom of the vertical autoclave through the lifting mechanism. There is no need for manual placement of the boards into the autoclave. After curing, there is no need for manual removal of the boards. Automatic loading and unloading is achieved, which improves curing efficiency and reduces the occurrence of danger.

[0019] (2) After the plates are sent to the curing tank, steam enters through the inlet pipe and gradually permeates into the tank. The sleeve is rotated by the drive mechanism, the sleeve drives the lifting rod to rotate, the lifting rod drives the lifting block to rotate, and the lifting block drives the support plate to rotate, thereby agitating the steam in the tank and making the steam more uniform. In addition, when the support plate rotates, it will continuously adjust the direction of the two support plates, so that the gap between the two support plates faces the inlet pipe, so that the steam can enter the space between the two support plates more quickly and diffuse to the adjacent plates, improving the uniformity of heating. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the present invention; Figure 2 A schematic diagram of a vertical autoclave curing system; Figure 3 A schematic diagram of a lifting block; Figure 4 Schematic diagram of a board storage rack; Figure 5 Schematic diagram of cam and limit post; Figure 6 This is a cross-sectional view of a vertical autoclave. Figure 7 This is a schematic diagram showing the plate placement rack after it has entered the autoclave. In the diagram: 1-Vertical autoclave, 2-Inlet pipe, 3-Lifting mechanism, 301-Support frame, 302-Hydraulic cylinder, 303-Adapter plate, 304-Sleeve, 305-Lifting rod, 306-Lifting block, 307-Slot, 308-Slot block, 4-Drive mechanism, 401-Second motor, 402-First gear, 403-Second gear, 5-Linear displacement mechanism, 501-Bearing seat, 502-Lead screw, 503-Guide rail, 504 - Third motor, 6- Slide, 601- Positioning rod, 7- Sheet material placement rack, 701- Base, 702- Sealing plug, 703- Support plate, 704- Bearing plate, 705- Rotating column, 706- Positioning block, 707- Placement plate, 708- Ventilation hole, 709- Lifting lug, 710- Limiting column, 711- Cam, 712- Transmission rod, 713- First motor, 714- Positioning groove, 8- Exhaust pipe, 9- Pressure relief pipe, 10- Sheet material. Detailed Implementation

[0021] 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.

[0022] Example 1 A fiber-reinforced calcium silicate slab production line includes: a pulping system, a vertical flow molding machine, a pre-curing chamber, and a vertical autoclaving system, sequentially connected by a central conveying system. Raw materials are mixed and pulped in the pulping system and then conveyed to the vertical flow molding machine. The vertical flow molding machine forms continuous, flat wet-process slabs through its internal forming mesh box and circulating filter belt. These slabs are carried by the central conveying system into the pre-curing chamber for preliminary dehydration and hydration reactions to achieve a certain initial strength. The pre-cured continuous slabs are then fed into the vertical autoclaving system.

[0023] The vertical autoclave system includes: The vertical autoclave curing system includes a vertical autoclave 1, a lifting mechanism 3 installed inside the autoclave, a drive mechanism 4 located above the autoclave and used to control the rotation of the lifting mechanism, a linear displacement mechanism 5 located below the autoclave, a slide 6 connected to the linear displacement mechanism, and a plate placement rack 7 detachably connected to the slide. After preliminary curing, the plates are placed on the plate placement rack 7. The linear displacement mechanism 5 controls the plate placement rack 7 to reach below the vertical autoclave 1. The lifting mechanism 3 then lifts the plate placement rack 7 and sends it into the vertical autoclave 1 for further heating and pressurization of the plates, achieving comprehensive curing.

[0024] The vertical autoclave 1 has a pressure-bearing shell that is vertically arranged and open at the bottom. The lower parts of both sides of the pressure-bearing shell are connected to air inlet pipes 2, which are connected to external steam supply equipment and are equipped with control valves, flow regulating valves, etc.

[0025] The lifting mechanism 3 includes a support frame 301, a hydraulic cylinder 302, a transition plate 303, a sleeve 304, a lifting rod 305, and a lifting block 306. The support frame 301 is installed on the top of the pressure-bearing housing, and the hydraulic cylinder 302 is installed on the support frame 301. The telescopic end of the hydraulic cylinder 302 is rotatably connected to the transition plate 303 via a bearing. The upper end of the lifting rod 305 is fixedly connected to the bottom surface of the transition plate 303, and the sleeve 304 is rotatably connected to the top of the pressure-bearing housing via a bearing. The lifting rod 305 is splined inside the sleeve 304. Specifically, the outer wall of the lifting rod 305 is provided with an external spline, the length of which is slightly less than the length of the lifting rod 305. The inner wall of the sleeve 304 is provided with a spline groove that matches the external spline. The external spline is slidably disposed in the spline groove, thereby allowing the lifting rod 305 to slide within the sleeve 304. When the sleeve 304 rotates, it can drive the lifting rod 305 to rotate together. The lifting block 306 is fixedly connected to the lower end of the lifting rod 305, and the lifting block 306 is located inside the pressure-bearing housing. The bottom surface of the lifting block 306 is provided with a through slot 307, and the two sides of the bottom surface of the lifting block 306 are provided with relatively extended locking blocks 308.

[0026] The drive mechanism 4 includes a second motor 401, a first gear 402, and a second gear 403. The second motor 401 is mounted on the top of the pressure-bearing housing. The first gear 402 is fixedly connected to the motor shaft of the second motor 401, and the second gear 403 is fixedly connected to the sleeve 304. The first gear 402 and the second gear 403 mesh. By controlling the operation of the second motor, the sleeve can be rotated through the engagement of the first and second gears.

[0027] The linear displacement mechanism 5 includes two bearing seats 501 fixedly connected to the base surface, a lead screw 502 rotatably connected to the two bearing seats via bearings, a guide rail 503 on the base surface, and a third motor 504 mounted on the base surface. The third motor 504 is drively connected to one end of the lead screw 502. A slide block 6 has a screw hole and is threadedly connected to the lead screw 502 through the screw hole. The bottom surface of the slide block 6 has a sliding groove and is slidably connected to the guide rail 503 through the sliding groove. Controlling the third motor to work and drive the lead screw to rotate will drive the slide block 6 to move linearly along the guide rail.

[0028] The board placement rack 7 includes a base 701, a sealing plug 702, a support plate 703, a bearing plate 704, and a rotating column 705. The base 701 is detachably connected to the slide 6. Specifically, multiple positioning rods 601 are fixed to the bottom surface of the slide 6, and the bottom surface of the base 701 is provided with positioning grooves 714 that match the positioning rods. The base 701 is installed on the positioning rods 601 of the slide through the positioning grooves, which can prevent the base 701 from shaking or falling off, and facilitates the lifting mechanism 3 to lift the board placement rack 7 upward and separate it from the slide 6.

[0029] The sealing plug 702 is square and is fixedly connected to the outer periphery of the top surface of the base 701. The size of the base 701 is the same as the size of the pressure-bearing shell, and the size of the sealing plug 702 is the same as the inner cavity size of the pressure-bearing shell. When the base contacts the bottom of the pressure-bearing shell, the sealing plug is inserted into the pressure-bearing shell and fits tightly against the inner wall of the shell to improve the sealing performance.

[0030] A support plate 704 is provided on the inner side of the sealing plug on the base 701. A rotating column 705 is fixed on the bottom surface of the support plate 704, and the rotating column 705 is rotatably connected to the base 701 via a bearing. Two support plates 703 are symmetrically fixed on the support plate 704. The opposite upper surfaces of the two support plates 703 are provided with outwardly extending positioning blocks 706 that cooperate with the locking blocks 308 and the locking slots 307. When the positioning block 706 is inserted between the locking blocks 308 and the locking slots 307, the lifting block 306 is pulled upward. Through the cooperation of the positioning block 706 with the locking slots 307 and the locking blocks 308, the plate placement rack 7 is driven to rise together. Multiple sets of L-shaped placement plates 707 are fixed on the opposite surfaces of the two support plates 703. The plates are placed on the placement plates 707 and arranged in an up-down pattern. Ventilation holes 708 are provided on the support plates 703 between adjacent placement plates to facilitate the entry of steam between the two support plates, so as to provide steam between adjacent plates.

[0031] The top of the pressure-bearing shell is connected to an exhaust pipe 8, which is equipped with an exhaust valve. Opening the exhaust valve allows the steam to be discharged to the waste gas treatment equipment for treatment.

[0032] The top of the pressure-bearing shell is connected to a pressure relief pipe 9, which is equipped with a pressure gauge and a pressure relief valve. The pressure gauge displays the gas pressure inside the vessel. When the gas pressure is too high, the pressure relief valve is opened to allow the gas pressure to reach the set value, and then the pressure relief valve is closed.

[0033] The slide block 6 is equipped with a first position sensor, and a second position sensor that cooperates with the first position sensor is provided on the base surface. The second position sensor is located below the pressure-bearing housing. When the first position sensor reaches the set distance with the second position sensor, the plate placement rack 7 is fully engaged with the lifting mechanism 3, and the linear displacement mechanism stops working.

[0034] This production line also includes a central control room and a hydraulic system, which provides power to the hydraulic cylinders. The central control room is equipped with a PLC controller, and the central conveying system, pulping system, vertical flow forming machine, pre-curing chamber, and vertical autoclaving system are all electrically connected to the PLC controller.

[0035] The working principle of this embodiment is as follows: After preliminary curing, the boards are placed one by one on the board placement rack 7. The linear displacement mechanism 5 controls the board placement rack 7 to reach below the vertical autoclave 1. Then, the lifting mechanism 3 lifts the board placement rack 7 and sends it into the vertical autoclave 1, so that the sealing plug 702 is inserted into the autoclave and closely adheres to the inner wall of the autoclave. At the same time, the base 701 is pressed tightly against the bottom of the autoclave to keep the base 701 stable. Then, steam is introduced into the vertical autoclave and gradually fills the autoclave. Then, the sleeve 304 is rotated by the drive mechanism. The sleeve 304 drives the lifting rod 305 to rotate, and the lifting rod 305 drives the lifting block 306 to rotate. Since the lifting block 306 and the positioning block are both square and the sealing plug is tightly attached to the inner wall of the vessel, the rotation of the lifting block 306 will drive the support plate 703 and the bearing plate 704 to rotate together, thereby agitating the steam in the vessel and making the steam more uniform. In addition, when the bearing plate 704 rotates, it will continuously adjust the direction of the two support plates 703, so that the gap between the two support plates 703 faces the air inlet pipe 2, so that the steam can enter the space between the two support plates 703 more quickly and diffuse to the adjacent plates, improving the uniformity of heating.

[0036] After the curing process is completed, the slab placement rack is lowered by the lifting mechanism and removed from the vertical autoclave. Finally, it is fixed on the slide, and the slide is driven away from the vertical autoclave by the linear displacement mechanism. Finally, the slabs are removed one by one to complete the production of the slab.

[0037] Example 2 The plate placement rack 7 also includes a limiting mechanism to prevent the bearing plate 704 from rotating. The limiting mechanism includes a lifting lug 709, a limiting post 710, a cam 711, a transmission rod 712, and a first motor 713. The bearing plate 704 is connected to both sides with lifting lugs 709, and the lifting lugs 709 have limiting holes. The base 701 has a drive cavity, and the top of the base 701 has two through holes communicating with the drive cavity. There are two limiting posts 710, which are slidably disposed in the two through holes. The transmission rod 712 is rotatably connected to the drive cavity. Two cams 711 are fixedly connected to the transmission rod 712. The two cams 711 are located below the two limiting posts 710. The first motor 713 is installed on the outside of the base 701, and the first motor 713 is connected to one end of the transmission rod 712. By rotating the cams 711, the limiting posts 710 can be pushed to slide up and down in the through holes and insert into or disengage from the limiting holes on the lifting lugs 709.

[0038] When the plate placement rack 7 is running on the linear displacement mechanism 5, in order to prevent the rotating column 705 from rotating, the upper end of the limiting column 710 is inserted into the limiting hole of the lifting lug 709. At this time, the bearing plate and the two support plates on it are in the upright position, that is, the positioning block 706 on the two support plates and the slot 307 are in the corresponding state. When the slide 6 moves in a straight line, the positioning block 706 can be inserted into the slot 307.

[0039] When the plate placement rack 7 enters the vertical autoclave 1, the first motor 711 rotates, driving the transmission rod 712 to rotate. The transmission rod 712 drives the cam 711 to rotate, causing the limiting post 710 to slide downward and leave the limiting hole. At this time, the lifting lug 709 separates from the limiting post 710, and the rotating column can be driven to rotate by the drive mechanism.

[0040] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber-reinforced calcium silicate slab production line, comprising a vertical autoclaving system, characterized in that, The vertical autoclave system includes: Vertical autoclave (1), the vertical autoclave (1) has a pressure-bearing shell that is vertically arranged and open at the bottom, and air inlet pipes (2) are connected to the lower parts of both sides of the pressure-bearing shell. A lifting mechanism (3) is installed inside a vertical autoclave (1); the lifting mechanism (3) includes a support frame (301), a hydraulic cylinder (302), a transition plate (303), a sleeve (304), a lifting rod (305), and a lifting block (306). The support frame (301) is installed on the top of the pressure-bearing shell, the hydraulic cylinder (302) is installed on the support frame (301), and the telescopic end of the hydraulic cylinder (302) is rotatably connected to the transition plate (303) through a bearing. The lifting rod (305) The upper end is fixedly connected to the bottom surface of the adapter plate (303), the sleeve (304) is rotatably connected to the top of the pressure shell through the bearing, the lifting rod (305) is splinedly connected to the sleeve (304), the lifting block (306) is fixedly connected to the lower end of the lifting rod (305), and the lifting block (306) is located in the pressure shell. The bottom surface of the lifting block (306) is provided with a through slot (307), and the two sides of the bottom surface of the lifting block (306) are provided with relatively extended locking blocks (308). A drive mechanism (4) is installed above the vertical autoclave (1) and is used to control the rotation of the sleeve (304). Linear displacement mechanism (5) is installed below the vertical autoclave (1); A slide (6) is connected to the linear displacement mechanism (5) via a transmission. A plate placement rack (7) is detachably connected to the slide (6); the plate placement rack (7) includes a base (701), a sealing plug (702), a support plate (703), a bearing plate (704), and a rotating column (705). The base (701) is detachably connected to the slide (6). The sealing plug (702) is square and is fixedly connected to the outer periphery of the top surface of the base (701). The size of the base (701) is the same as the size of the pressure-bearing shell, and the size of the sealing plug (702) is the same as the inner cavity size of the pressure-bearing shell. A bearing plate is provided on the inner side of the sealing plug on the base (701). The support plate (704) has a rotating column (705) fixed on its bottom surface. The rotating column (705) is rotatably connected to the base (701) through a bearing. There are two support plates (703), which are symmetrically fixed on the support plate (704). The opposite sides of the upper ends of the two support plates (703) are provided with outwardly extending positioning blocks (706) that cooperate with the locking block (308) and the locking groove (307). Multiple sets of L-shaped placement plates (707) are fixed on the opposite sides of the two support plates (703). Ventilation holes (708) are opened on the support plates (703) between adjacent placement plates.

2. The fiber-reinforced calcium silicate slab production line according to claim 1, characterized in that: The plate placement rack (7) also includes a limiting mechanism to prevent the bearing plate (704) from rotating. The limiting mechanism includes a lifting lug (709), a limiting post (710), a cam (711), a transmission rod (712), and a first motor (713). The bearing plate (704) is connected to the two sides with lifting lugs (709). Limiting holes are provided on the lifting lugs (709). The base (701) is provided with a driving cavity. The top of the base (701) is provided with two through holes communicating with the driving cavity. There are two limiting posts (710), which are slidably set. The transmission rod (712) is rotatably connected to the drive cavity and placed in two through holes. Two cams (711) are fixedly connected to the transmission rod (712). The two cams (711) are located below the two limiting posts (710). The first motor (713) is installed outside the base (701) and is connected to one end of the transmission rod (712). By rotating the cams (711), the limiting posts (710) can be pushed to slide up and down in the through holes and insert into or disengage from the limiting holes on the lifting lugs (709).

3. The fiber-reinforced calcium silicate slab production line according to claim 2, characterized in that: It also includes a pulping system, a vertical flow forming machine and a pre-curing chamber connected in sequence via a central conveying system, wherein the vertical autoclaving system is located downstream of the pre-curing chamber.

4. The fiber-reinforced calcium silicate slab production line according to claim 3, characterized in that: The drive mechanism (4) includes a second motor (401), a first gear (402) and a second gear (403). The second motor (401) is mounted on the top of the pressure-bearing housing. The first gear (402) is fixedly connected to the motor shaft of the second motor (401). The second gear (403) is fixedly connected to the sleeve (304). The first gear (402) meshes with the second gear (403).

5. The fiber-reinforced calcium silicate slab production line according to claim 4, characterized in that: The linear displacement mechanism (5) includes two bearing seats (501) fixedly connected to the base surface, a lead screw (502) rotatably connected to the two bearing seats through bearings, a guide rail (503) provided on the base surface, and a third motor (504) installed on the base surface. The third motor (504) is connected to one end of the lead screw (502) for transmission. The slide (6) is provided with a screw hole and is threadedly connected to the lead screw (502) through the screw hole. The bottom surface of the slide (6) is provided with a sliding groove and is slidably connected to the guide rail (503) through the sliding groove.

6. The fiber-reinforced calcium silicate slab production line according to claim 5, characterized in that: The bottom surface of the slide (6) is fixed with multiple positioning rods (601), and the bottom surface of the base (701) is provided with positioning grooves (714) that match the positioning rods.

7. The fiber-reinforced calcium silicate slab production line according to claim 6, characterized in that: The top of the pressure-bearing shell is connected to an exhaust pipe (8), and an exhaust valve is provided on the exhaust pipe (8).

8. The fiber-reinforced calcium silicate slab production line according to claim 7, characterized in that: The top of the pressure-bearing housing is connected to a pressure relief pipe (9), and a pressure gauge and a pressure relief valve are installed on the pressure relief pipe (9).

9. A fiber-reinforced calcium silicate slab production line according to claim 8, characterized in that: The slide (6) is provided with a first position sensor, and the base surface is provided with a second position sensor that cooperates with the first position sensor. The second position sensor is located below the pressure-bearing housing. When the first position sensor reaches the set distance from the second position sensor, the plate placement rack (7) is fully engaged with the lifting mechanism (3).

10. A fiber-reinforced calcium silicate slab production line according to claim 9, characterized in that: It also includes a central control room, which is equipped with a PLC controller. The central conveying system, the pulping system, the vertical flow forming machine, the pre-curing chamber, and the vertical autoclaving system are all electrically connected to the PLC controller.

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