A device and method for preparing fly ash-based foamed ceramic thermal insulation material

Abstract

This invention discloses a device and method for preparing fly ash-based foamed ceramic insulation material, relating to the field of insulation board processing technology. The device includes a mixing tank with a feed hopper connected to its upper end and a discharge valve connected to its lower surface. It also includes a mixing structure disposed on the inner wall of the mixing tank for rapidly mixing raw materials. The mixing structure includes a storage cylinder fixedly installed on the inner wall of the mixing tank, a top plate for ejecting raw materials from the storage cylinder, a nozzle for adding foaming liquid, a guide plate for facilitating pre-mixing of the foaming liquid and raw materials, and a mixing plate for stirring the raw materials. This invention, by setting up a mixing structure and employing a method of first pre-mixing the powdered raw materials with the foaming liquid, and then performing a secondary stirring of the powdered raw materials and the foaming liquid, can greatly improve the mixing efficiency of the powdered raw materials and the foaming liquid, and achieve more thorough mixing.

Description

Technical Field

[0001] This invention relates to the field of insulation board processing technology, specifically to a device and method for preparing fly ash-based foamed ceramic insulation materials. Background Technology

[0002] During the process of thermal power generation, a large amount of fly ash waste is generated after coal combustion. In order to prevent the direct dumping of fly ash and the resulting pollution, fly ash is often mixed with other materials and then processed through foaming, molding, sintering and cutting to produce foamed ceramic insulation boards with fly ash as the main substrate. The emergence of fly ash-based foamed ceramic insulation boards has greatly reduced the pollution caused by the direct dumping of fly ash and is an environmentally friendly building decoration material.

[0003] In the existing technology, when mixing fly ash with other materials, it is necessary to first pour fly ash and other raw material powders into a mixing container in a certain proportion, and then add a certain amount of foaming agent solution to the mixing container. After stirring, the foaming agent solution and raw material powder are fully mixed to obtain a fluid raw material that can be directly poured into a mold.

[0004] The above-mentioned and existing related technologies often have the following drawbacks: When mixing, the powder raw materials and foaming agents need to be poured into the mixing container one after the other. At this time, the powder raw materials and foaming agents will separate into layers, and it takes a lot of time to turn the powder raw materials at the bottom to the top, making it difficult for the powder raw materials and foaming agents to come into quick and full contact and mix, resulting in low mixing efficiency.

[0005] Therefore, we propose a device and method for preparing fly ash-based foamed ceramic insulation materials. Summary of the Invention

[0006] The purpose of this invention is to provide an apparatus and method for preparing fly ash-based foamed ceramic insulation materials, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a device and method for preparing fly ash-based foamed ceramic insulation material, comprising a mixing tank, wherein the upper end of the mixing tank is connected to a feed hopper, and the lower surface of the mixing tank is connected to a discharge valve, and further comprising:

[0008] A mixing structure disposed on the inner wall of the mixing tank for rapidly mixing raw materials includes a storage cylinder fixedly installed on the inner wall of the mixing tank, a top plate for ejecting the raw materials in the storage cylinder, a nozzle for adding foaming liquid, a guide plate for facilitating premixing of foaming liquid and raw materials, and a mixing plate for mixing raw materials.

[0009] A transmission structure disposed on the outer wall of the mixing tank for driving the mixing plate to rotate includes an electric push rod fixedly installed on the outer wall of the mixing tank, a frustum block for indirectly driving the mixing plate to rotate, and a pressure ring.

[0010] A shaking structure is provided on the outer wall of the storage cylinder to make the guide plate shake continuously. The shaking structure includes a fixed plate fixedly installed on the outer wall of the storage cylinder, a leaf spring for automatically resetting the storage cylinder, and a baffle ball for changing the flow direction of the foaming liquid discharged from the nozzle.

[0011] The effects achieved by the above components are as follows: By setting up a stirring structure, the powdered raw materials and foaming liquid are pre-mixed first, and then the powdered raw materials and foaming liquid are stirred a second time, which can greatly improve the mixing efficiency of the powdered raw materials and foaming liquid, and the mixing is more thorough. By setting up a transmission structure, the stirring plate can be rotated during the movement of the stirring plate, thereby further improving the mixing efficiency of the powdered raw materials and foaming liquid, thus improving the practicality of the device. By setting up a shaking structure, the guide plate can be continuously shaken in the vertical direction during the discharge of the powdered raw materials from the storage cylinder, so that the raw materials can slide quickly off the surface of the guide plate due to inertia, preventing the accumulation of a large amount of raw materials.

[0012] Preferably, a servo motor is fixedly connected to the lower surface of the mixing tank, and a transmission rod is fixedly connected to the output end of the servo motor. The transmission rod is rotatably connected to the mixing tank, and a threaded groove is formed on the arc surface of the transmission rod. The top plate is slidably fitted onto the arc surface of the transmission rod, and the top plate is slidably connected to the storage cylinder. Several steel needles are fixedly connected to the upper surface of the top plate, and the size of the steel needles is adapted to the size of the threaded groove. A liquid inlet pipe is fixedly connected to the inner wall of the mixing tank, and the nozzle is connected to the liquid inlet pipe. A connecting plate is fixedly connected to the upper end of the transmission rod, and a rotating rod is vertically rotatably connected inside the connecting plate. The rotating rod is parallel to the transmission rod, and the mixing plate is fixedly connected to the rotating rod. A shovel plate is rotatably connected to the lower end of the rotating rod, and the shovel plate is slidably connected to the mixing tank and the storage cylinder. The shovel plate has a spiral structure, and the guide plate is slidably connected to the storage cylinder.

[0013] The aforementioned components achieve the following effects: When the servo motor is activated, its output rotation drives the transmission rod, which in turn moves the steel needle via the threaded groove. This movement of the steel needle then moves the top plate. As the top plate moves upward, the powdered material above the storage cylinder slides evenly to the sides and falls onto the surface of the guide plate. At this point, high-speed flowing foaming liquid is introduced into the feed pipe, and the nozzle sprays the foaming liquid onto the surface of the guide plate, thus pre-mixing the foaming liquid with the powdered material. When the servo motor rotates at a constant speed, the powdered material is evenly discharged, ensuring uniform contact between the foaming liquid and the powdered material. The connecting plate, driven by the transmission rod, moves the rotating rod, which in turn moves the shovel plate along the inner wall of the mixing tank. The shovel plate scoops up the material at the bottom of the mixing tank. The mixing plate, following the rotating rod, performs secondary mixing of the material, significantly improving mixing efficiency. By pre-mixing the powdered material with the foaming liquid and then performing secondary mixing, the mixing efficiency of the powdered material and the foaming liquid is greatly improved.

[0014] Preferably, the arc surface of the transmission rod has two annular grooves, which are connected to the threaded grooves.

[0015] The effect achieved by the above components is as follows: the rotation of the transmission rod causes the steel needle to slide from the inner wall of the threaded groove into the inner wall of the annular groove. After the top plate moves to a certain position, the annular groove prevents the steel needle from continuously driving the top plate to move in the vertical direction when the transmission rod rotates, thereby ensuring that the transmission rod can rotate continuously in one direction.

[0016] Preferably, the inner wall of the mixing tank is fixedly connected with a plurality of fixed tubes, the arc surface of the fixed tubes is slidably connected to a slide tube, the arc surface of the fixed tubes is fitted with a spring, the two ends of the springs are fixedly connected to the mixing tank and the slide tube respectively, and the slide tube is located below the top plate.

[0017] The effect achieved by the above components is that when the spring is compressed, the slide tube can use the spring force to push the top plate upward, so that the steel needle located above can always be pressed against the top of the inner wall of the annular groove.

[0018] Preferably, a rectangular plate is fixedly connected to the output end of the electric actuator, a through hole is opened in the mixing tank relative to the rectangular plate, the rectangular plate is slidably connected to the inner wall of the through hole, the rectangular plate is fixedly connected to the pressure ring, the frustum block is fixedly installed on the upper end of the rotating rod, an elastic ring is fixedly connected to the surface of the pressure ring, the elastic ring is made of rubber, and the pressure ring is made of hard material.

[0019] The effect achieved by the above components is as follows: when it is necessary to adjust the friction between the frustum block and the elastic ring, the output end of the control electric actuator extends, the rectangular plate slides along the inner wall of the through hole, which drives the pressure ring to move. The movement of the pressure ring will squeeze the elastic ring, and the elastic ring will deform, increasing the friction between it and the frustum block.

[0020] Preferably, a plurality of friction strips are fixedly connected to the arc surface of the frustum block.

[0021] The effect achieved by the above components is that the friction strip will press against the surface of the elastic ring, further increasing the friction between the frustum block and the elastic ring.

[0022] Preferably, a sealing plate is fixedly connected to the surface of the rectangular plate, the size of the sealing plate is larger than the size of the through hole, and the sealing plate is slidably connected to the mixing tank.

[0023] The effect achieved by the above components is that during the extension and retraction of the output end of the electric actuator, the rectangular plate can drive the sealing plate to slide along the surface of the mixing tank, and the sealing plate can block the through hole to prevent the raw materials from spilling out during the mixing process.

[0024] Preferably, the two ends of the leaf spring are fixedly connected to the fixing plate and the guide plate respectively, and a bending rod is fixedly connected to the surface of the connecting plate. The other end of the bending rod is fixedly connected to the baffle ball. The number of baffle balls is equal to the number of nozzles, and the arc surface of the baffle ball is provided with several arc-shaped grooves.

[0025] The aforementioned components achieve the following effects: the high-speed flowing foaming liquid impacts the guide plate, causing it to slide along the arc surface of the storage cylinder. This sliding of the guide plate compresses the leaf spring, which is then in a compressed state. When the baffle ball aligns with the nozzle, the foaming liquid discharged from the nozzle sprays onto the arc surface of the baffle ball. The arc groove on the arc surface of the baffle ball changes the flow direction of the foaming liquid, preventing it from continuing to flow at high speed and impacting the guide plate. At this point, the leaf spring can use its own elasticity to make the guide plate slide upward and reset. Therefore, as the transmission rod continues to rotate, the guide plate can continuously vibrate in the vertical direction, allowing the raw material to slide quickly off the surface of the guide plate due to inertia, preventing the accumulation of a large amount of raw material.

[0026] Preferably, a limiting plate is slidably connected to the surface of the fixed plate, the limiting plate is fixedly connected to the top plate, and a clearance hole is provided on the surface of the leaf spring, the clearance hole being slidably connected to the top plate.

[0027] The above components achieve the following effect: the sliding of the guide plate will cause the limiting plate to slide along the surface of the fixed plate, and the fixed plate will limit the sliding path of the limiting plate, thereby limiting the sliding path of the guide plate and preventing the guide plate from rotating in the horizontal direction and causing damage to the leaf spring.

[0028] Preferably, a method for preparing a fly ash-based foamed ceramic insulation material includes the following steps:

[0029] S1. Select raw materials by mass fraction: foaming liquid 25-50 parts, sepiolite 10-20 parts, gypsum 3-8 parts, ceramic waste 5-15 parts, fly ash 10-25 parts, and modifying additives 2-6 parts.

[0030] S2. Select a ball mill with a rotation speed of 300-800 r / min, and pulverize the raw material with a solid material to grinding ball ratio of 1:2 until it passes through 280 mesh. The running time is 46-75 min to obtain powdered raw material.

[0031] S3. Pour the powdered raw material into the storage cylinder through the feed hopper, and use the top plate to evenly discharge the powdered raw material, so that the powdered raw material and the foaming agent are premixed.

[0032] S4. Control the servo motor to drive the stirring plate to fully mix the powdered raw materials and foaming agent;

[0033] S5. Discharge the raw material into the mold through the discharge valve;

[0034] S6. Place the mold in a high-temperature calcining furnace and heat it from room temperature to 500°C at a rate of 12°C / min, then heat it to 1000°C at a rate of 6°C / min, then heat it to 1200°C at a rate of 4°C / min, then heat it to 1260-1300°C at a rate of 5°C / min, and then hold it at that temperature for 35-55 minutes.

[0035] S7. After the mold cools down, remove the fly ash-based foamed ceramic insulation board from the mold and cut it into the required size using a cutting machine.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. By setting up a stirring structure, the present invention adopts a method of pre-mixing the powdered raw materials and foaming liquid first, and then stirring the powdered raw materials and foaming liquid a second time, which can greatly improve the mixing efficiency of the powdered raw materials and foaming liquid, and make the mixing more thorough.

[0038] 2. By setting up a transmission structure, the present invention enables the stirring plate to rotate during the movement of the stirring plate, thereby further improving the mixing efficiency of powdered raw materials and foaming liquid, and thus improving the practicality of the device.

[0039] 3. By setting up a shaking structure, the present invention can make the guide plate continuously shake in the vertical direction during the process of powdered raw materials being discharged from the storage cylinder, so that the raw materials can quickly slide off the surface of the guide plate due to inertia, preventing the accumulation of raw materials. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 For the present invention Figure 1 A schematic diagram of a partial cross-sectional structure;

[0042] Figure 3 This is a schematic cross-sectional view of the mixing tank of the present invention;

[0043] Figure 4 This is a schematic diagram of the structure of the transmission rod of the present invention;

[0044] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0045] Figure 6 This is a schematic diagram of the structure of the storage cylinder of the present invention;

[0046] Figure 7 This is a schematic diagram of the structure at the rotating rod of the present invention;

[0047] Figure 8 This is a schematic diagram of the structure of the fixed tube in this invention;

[0048] Figure 9 For the present invention Figure 3 Enlarged view of point A in the middle;

[0049] Figure 10 This is a schematic diagram of the structure of the pressure ring of the present invention;

[0050] Figure 11 This is a schematic diagram of the structure of the frustum block of the present invention;

[0051] Figure 12 For the present invention Figure 6 Enlarged view of point C in the middle;

[0052] Figure 13 This is a schematic diagram of the ball-blocking structure of the present invention.

[0053] In the diagram: 1. Mixing tank; 2. Feed hopper; 3. Discharge valve; 4. Mixing structure; 401. Storage cylinder; 402. Servo motor; 403. Transmission rod; 404. Threaded groove; 405. Top plate; 406. Steel needle; 407. Guide plate; 408. Liquid inlet pipe; 409. Nozzle; 410. Connecting plate; 411. Rotating rod; 412. Mixing plate; 413. Shovel plate; 414. Annular groove; 415. Fixed tube; 416. Sliding tube; 417. Spring; 5. Transmission structure; 51. Electric actuator; 52. Rectangular plate; 53. Through hole; 54. Pressure ring; 55. Elastic ring; 56. Frustum block; 57. Friction strip; 58. Sealing plate; 6. Vibration structure; 61. Fixed plate; 62. Limiting plate; 63. Leaf spring; 64. Clearance hole; 65. Bending rod; 66. Ball stop; 67. Arc groove. Detailed Implementation

[0054] 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.

[0055] Please see Figure 1-13 This invention provides a technical solution: a device and method for preparing fly ash-based foamed ceramic insulation material, comprising a mixing tank 1, with a feed hopper 2 connected to the upper end of the mixing tank 1 and a discharge valve 3 connected to the lower surface of the mixing tank 1, and further comprising: a stirring structure 4 disposed on the inner wall of the mixing tank 1 for rapidly mixing raw materials, the stirring structure 4 comprising a storage cylinder 401 fixedly installed on the inner wall of the mixing tank 1, a top plate 405 for ejecting the raw materials in the storage cylinder 401, a nozzle 409 for adding foaming liquid, a guide plate 407 for facilitating pre-mixing of foaming liquid and raw materials, and a stirring mechanism. The mixing plate 412 for mixing raw materials; a transmission structure 5 disposed on the outer wall of the mixing tank 1 for driving the mixing plate 412 to rotate, the transmission structure 5 including an electric push rod 51 fixedly installed on the outer wall of the mixing tank 1, a frustum block 56 for indirectly driving the mixing plate 412 to rotate, and a pressure ring 54; a shaking structure 6 disposed on the outer wall of the storage cylinder 401 for continuously shaking the guide plate 407, the shaking structure 6 including a fixing plate 61 fixedly installed on the outer wall of the storage cylinder 401, a leaf spring 63 for automatically resetting the storage cylinder 401, and a baffle ball 66 for changing the flow direction of the foaming liquid discharged from the nozzle 409.

[0056] like Figure 2-8As shown, a servo motor 402 is fixedly connected to the lower surface of the mixing tank 1. A transmission rod 403 is fixedly connected to the output end of the servo motor 402. The transmission rod 403 is rotatably connected to the mixing tank 1. A threaded groove 404 is opened on the arc surface of the transmission rod 403. The top plate 405 is slidably sleeved on the arc surface of the transmission rod 403. The top plate 405 is slidably connected to the storage cylinder 401. Several steel needles 406 are fixedly connected to the upper surface of the top plate 405. The size of the steel needles 406 is adapted to the size of the threaded groove 404. An inlet pipe 408 and a nozzle 40 are fixedly connected to the inner wall of the mixing tank 1. 9 is connected to the inlet pipe 408. The upper end of the transmission rod 403 is fixedly connected to the connecting plate 410. The connecting plate 410 is vertically rotatably connected to the rotating rod 411. The rotating rod 411 is arranged parallel to the transmission rod 403. The stirring plate 412 is fixedly connected to the rotating rod 411. The lower end of the rotating rod 411 is rotatably connected to the shovel plate 413. The shovel plate 413 is slidably connected to the stirring tank 1 and the storage cylinder 401. The shovel plate 413 has a spiral structure. The guide plate 407 is slidably connected to the storage cylinder 401. When the servo motor 402 is started, the output end of the servo motor 402 rotates, which drives the transmission rod 403. 3. When the transmission rod 403 rotates, it drives the steel needle 406 to move via the threaded groove 404. The movement of the steel needle 406 drives the top plate 405 to move. As the top plate 405 moves upward, the powdery raw material that is above the storage cylinder 401 will slide evenly to the surroundings and fall onto the surface of the guide plate 407. At this time, high-speed flowing foaming liquid is introduced into the feed pipe, and the nozzle 409 sprays the foaming liquid onto the surface of the guide plate 407, thereby pre-mixing the foaming liquid with the powdery raw material. When the servo motor 402 rotates at a constant speed, the powdery raw material can be evenly discharged, thus enabling... The foaming liquid and powder raw materials are in uniform contact. The connecting plate 410 rotates with the help of the transmission rod 403, which drives the rotating rod 411 to move. The movement of the rotating rod 411 drives the shovel plate 413 to slide along the inner wall of the mixing tank 1. The shovel plate 413 can scoop up the raw materials at the bottom of the inner wall of the mixing tank 1. The mixing plate 412 moves with the rotating rod 411 to perform secondary mixing of the raw materials, which greatly improves the mixing efficiency. By first pre-mixing the powder raw materials with the foaming liquid, and then performing secondary mixing of the powder raw materials with the foaming liquid, the mixing efficiency of the powder raw materials and the foaming liquid can be greatly improved. The arc surface of the transmission rod 403 has two annular grooves 414, which are connected to the threaded groove 404. When the transmission rod 403 rotates, the steel needle 406 slides from the inner wall of the threaded groove 404 into the inner wall of the annular groove 414. The annular groove 414 prevents the steel needle 406 from continuously driving the top plate 405 to move in the vertical direction when the transmission rod 403 rotates after the top plate 405 has moved to a certain position, thereby ensuring that the transmission rod 403 can rotate continuously in one direction.Several fixed tubes 415 are fixedly connected to the inner wall of the mixing tank 1. A slide tube 416 is slidably connected to the arc surface of the fixed tube 415. A spring 417 is sleeved on the arc surface of the fixed tube 415. The two ends of the spring 417 are fixedly connected to the mixing tank 1 and the slide tube 416 respectively. The slide tube 416 is located below the top plate 405. When the spring 417 is compressed, the slide tube 416 can push the top plate 405 upward with the elastic force of the spring 417, so that the steel needle 406 located above can always be pressed against the top of the inner wall of the annular groove 414.

[0057] like Figure 7 and Figure 9-11 As shown, a rectangular plate 52 is fixedly connected to the output end of the electric actuator 51. A through hole 53 is provided in the mixing tank 1 relative to the rectangular plate 52. The rectangular plate 52 is slidably connected to the inner wall of the through hole 53. The rectangular plate 52 is fixedly connected to the pressure ring 54. A frustum block 56 is fixedly installed on the upper end of the rotating rod 411. An elastic ring 55 is fixedly connected to the surface of the pressure ring 54. The elastic ring 55 is made of rubber, and the pressure ring 54 is made of hard material. When it is necessary to adjust the friction between the frustum block 56 and the elastic ring 55, the output end of the electric actuator 51 is extended. The rectangular plate 52 slides along the inner wall of the through hole 53, which drives the pressure ring 54 to move. The movement of the pressure ring 54 will squeeze the elastic ring 55, and the elastic ring 55 will deform, increasing the friction between it and the frustum block 56. Several friction strips 57 are fixedly connected to the arc surface of the frustum block 56. The friction strips 57 will abut against the surface of the elastic ring 55, further increasing the friction between the frustum block 56 and the elastic ring 55. A sealing plate 58 is fixedly connected to the surface of the rectangular plate 52. The size of the sealing plate 58 is larger than the size of the through hole 53. The sealing plate 58 is slidably connected to the mixing tank 1. During the extension and retraction of the output end of the electric push rod 51, the rectangular plate 52 can drive the sealing plate 58 to slide along the surface of the mixing tank 1. The sealing plate 58 can block the through hole 53 to prevent the raw materials from spilling out during the mixing process.

[0058] like Figure 4 and Figure 12 as well as Figure 13As shown, the two ends of the leaf spring 63 are fixedly connected to the fixed plate 61 and the guide plate 407, respectively. A bent rod 65 is fixedly connected to the surface of the connecting plate 410. The other end of the bent rod 65 is fixedly connected to the baffle ball 66. The number of baffle balls 66 is equal to the number of nozzles 409. The arc surface of the baffle ball 66 is provided with several arc-shaped grooves 67. The high-speed flowing foaming liquid will impact the guide plate 407, causing the guide plate 407 to slide along the arc surface of the storage cylinder 401. The sliding of the guide plate 407 will squeeze the leaf spring 63. At this time, the leaf spring 63 is in a compressed state. When the baffle ball 66 and the nozzle 409 are in a compressed state, the foaming liquid will impact the guide plate 407, causing the guide plate 407 to slide along the arc surface of the storage cylinder 401. The sliding of the guide plate 407 will squeeze the leaf spring 63. At this time, the leaf spring 63 is in a compressed state. After the nozzles 409 are aligned, the foaming liquid discharged from the nozzles 409 will spray onto the arc surface of the baffle ball 66. At this time, the arc groove 67 opened on the arc surface of the baffle ball 66 will change the flow direction of the foaming liquid, preventing the foaming liquid from continuing to flow at high speed and impacting the guide plate 407. At this time, the leaf spring 63 can use its own elasticity to make the guide plate 407 slide upward and reset. Therefore, the transmission rod 403 continues to rotate, which can make the guide plate 407 continuously vibrate in the vertical direction, so that the raw material can slide quickly off the surface of the guide plate 407 due to inertia, preventing the raw material from accumulating in large quantities. A limiting plate 62 is slidably connected to the surface of the fixed plate 61. The limiting plate 62 is fixedly connected to the top plate 405. A clearance hole 64 is provided on the surface of the leaf spring 63. The clearance hole 64 is slidably connected to the top plate 405. When the guide plate 407 slides, it will drive the limiting plate 62 to slide along the surface of the fixed plate 61. The fixed plate 61 achieves the function of limiting the sliding path of the limiting plate 62, thereby limiting the sliding path of the guide plate 407 and preventing the guide plate 407 from rotating in the horizontal direction and causing damage to the leaf spring 63.

[0059] like Figure 1-13 As shown, a method for preparing a fly ash-based foamed ceramic insulation material includes the following steps:

[0060] S1. Select raw materials by mass fraction: foaming liquid 25-50 parts, sepiolite 10-20 parts, gypsum 3-8 parts, ceramic waste 5-15 parts, fly ash 10-25 parts, and modifying additives 2-6 parts.

[0061] S2. Select a ball mill with a rotation speed of 300-800 r / min, and pulverize the raw material with a solid material to grinding ball ratio of 1:2 until it passes through 280 mesh. The running time is 46-75 min to obtain powdered raw material.

[0062] S3. Pour the powdered raw material into the storage cylinder 401 through the feed hopper 2, and use the top plate 405 to evenly discharge the powdered raw material, so that the powdered raw material and the foaming agent are premixed.

[0063] S4. Control the servo motor 402 to drive the stirring plate 412 to fully mix the powdered raw materials and foaming agent;

[0064] S5. Discharge the raw material into the mold through the discharge valve;

[0065] S6. Place the mold in a high-temperature calcining furnace and heat it from room temperature to 500°C at a rate of 12°C / min, then heat it to 1000°C at a rate of 6°C / min, then heat it to 1200°C at a rate of 4°C / min, then heat it to 1260-1300°C at a rate of 5°C / min, and then hold it at that temperature for 35-55 minutes.

[0066] S7. After the mold cools down, remove the fly ash-based foamed ceramic insulation board from the mold and cut it into the required size using a cutting machine.

[0067] Working principle: When mixing the raw materials of fly ash-based foamed ceramic insulation material, the servo motor 402 is started first. The rotation of the output end of the servo motor 402 will drive the transmission rod 403 to rotate. During this process, the top plate 405, under its own gravity, will drive the steel needle 406 to move downward. Therefore, when the transmission rod 403 rotates to the appropriate position, the steel needle 406 will contact the inner wall of the threaded groove 404. As the transmission rod 403 rotates, the other steel needles 406 will also move along the inner wall of the threaded groove 404. The movement of the steel needles 406 will drive the top plate 405 to move downward synchronously. The movement of the top plate 405 will contact the slide tube 416. At this time, the top plate 405 will squeeze the slide tube 416. The slide tube 416 slides along the arc surface of the fixed tube 415 and squeezes the spring 416. 17. At this time, the spring 417 is in a compressed state. The continued rotation of the transmission rod 403 will cause the steel needle 406 to slide from the inner wall of the threaded groove 404 into the inner wall of the annular groove 414 again. The annular groove 414 reaches a certain position after the top plate 405 moves to a certain position, preventing the steel needle 406 from continuously driving the top plate 405 to move in the vertical direction when the transmission rod 403 rotates, thus ensuring that the transmission rod 403 can continue to rotate in one direction. Then, a certain amount of powdered raw material can be poured into the storage cylinder 401 through the feed hopper 2. At this time, the powdered raw material will accumulate above the top plate 405. Then, the output end of the servo motor 402 is controlled to rotate in the opposite direction. Since the spring 417 is in a compressed state, the slide tube 416 can... The spring 417 helps to lift the top plate 405 upwards, ensuring that the steel needle 406 remains pressed against the top of the inner wall of the annular groove 414. When the threaded groove 404 and the steel needle 406 align again, the steel needle 406 slides into the inner wall of the threaded groove 404 due to the spring 417. As the transmission rod 403 continues to rotate, the steel needle 406 drives the top plate 405 upwards. During this process, the steel needle 406 scrapes out the powdery material adhering to the inner wall of the threaded groove 404, cleaning the inner wall of the threaded groove 404. Since the steel needle 406 is positioned above the top plate 405, the scraped powdery material falls directly onto the top plate 405, preventing it from falling out of the inner wall of the threaded groove 404. The powdery material falls below the top plate 405, which over time causes a large accumulation of raw material, affecting the normal movement of the top plate 405. During the upward movement of the top plate 405, the powdery material above the storage cylinder 401 will slide evenly to the surroundings and fall onto the surface of the guide plate 407. At this time, high-speed flowing foaming liquid is introduced into the feed pipe, and the nozzle 409 will spray the foaming liquid onto the surface of the guide plate 407, thereby pre-mixing the foaming liquid with the powdery material. When the servo motor 402 rotates at a constant speed, the powdery material can be evenly discharged, thus ensuring uniform contact between the foaming liquid and the powdery material. When the steel ball slides back into the annular groove 414 located at the upper end of the transmission rod 403, all the powdery material in the storage cylinder 401 will be discharged.The connecting plate 410, rotating via the transmission rod 403, drives the rotating rod 411 to move. The movement of the rotating rod 411 causes the shovel plate 413 to slide along the inner wall of the mixing tank 1. The shovel plate 413 can scoop up the raw material at the bottom of the inner wall of the mixing tank 1. The mixing plate 412, following the movement of the rotating rod 411, performs secondary mixing of the raw material, greatly improving the mixing efficiency. By pre-mixing the powdered raw material with the foaming liquid and then performing secondary mixing, the mixing efficiency of the powdered raw material and the foaming liquid can be greatly improved.

[0068] During the rotation of the transmission rod 403, the rotating rod 411 drives the frustum block 56 to slide along the surface of the elastic ring 55. The elastic ring 55 increases the friction between the frustum block 56 and the pressure ring 54, enabling the frustum block 56 to drive the rotating rod 411 to rotate. The rotation of the rotating rod 411, in turn, drives the stirring plate 412 to rotate, thereby greatly improving the stirring efficiency of the stirring plate 412. This allows the powdered raw material to fully contact the foaming liquid. When it is necessary to adjust the friction between the frustum block 56 and the elastic ring 55, the output end of the electric actuator 51 is extended, and the rectangular plate 52 moves along the through hole 53. The sliding of the inner wall will cause the pressure ring 54 to move. The movement of the pressure ring 54 will squeeze the elastic ring 55. The elastic ring 55 will deform and increase the friction between it and the frustum block 56. At the same time, the friction strip 57 will press against the surface of the elastic ring 55, further increasing the friction between the frustum block 56 and the elastic ring 55, ensuring that the rotating rod 411 can drive the stirring plate 412 to rotate normally. During the extension and retraction of the output end of the electric push rod 51, the rectangular plate 52 can drive the sealing plate 58 to slide along the surface of the mixing tank 1. The sealing plate 58 can seal the through hole 53 to prevent the raw materials from spilling out during the stirring process.

[0069] During the discharge of powdered raw materials from the storage cylinder 401, the high-speed flowing foaming liquid impacts the guide plate 407, causing it to slide along the arc surface of the storage cylinder 401. This sliding of the guide plate 407 drives the limiting plate 62 to slide along the surface of the fixing plate 61. The fixing plate 61 then restricts the sliding path of the limiting plate 62, thereby limiting the sliding path of the guide plate 407 and preventing damage to the leaf spring 63 caused by the guide plate 407 rotating horizontally. The sliding of the guide plate 407 compresses the leaf spring 63, placing it in a compressed state. During the bending process of the leaf spring 63, the limiting plate 62 restricts the bending direction of the leaf spring 63. Furthermore, when the leaf spring 63 abuts against the surface of the limiting plate 62, the limiting plate 62 prevents the leaf spring 63 from continuing to bend. The position of the guide plate 407 is restricted to ensure that the foaming liquid can be sprayed normally on the surface of the guide plate 407. The bending rod 65 moves with the help of the connecting plate 410, which drives the baffle ball 66 to move. When the baffle ball 66 is aligned with the nozzle 409, the foaming liquid discharged from the nozzle 409 will spray onto the arc surface of the baffle ball 66. At this time, the arc groove 67 opened on the arc surface of the baffle ball 66 will change the flow direction of the foaming liquid, preventing the foaming liquid from continuing to flow at high speed and impacting the guide plate 407. At this time, the leaf spring 63 can use its own elasticity to make the guide plate 407 slide upward and reset. Therefore, the transmission rod 403 continues to rotate, which can make the guide plate 407 continuously vibrate in the vertical direction, so that the raw material can slide quickly off the surface of the guide plate 407 due to inertia, preventing the raw material from accumulating in large quantities.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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 process, method, article, or apparatus.

[0071] 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 device for preparing fly ash-based foamed ceramic insulation material, comprising a mixing tank (1), characterized in that: The upper end of the mixing tank (1) is connected to a feed hopper (2), and the lower surface of the mixing tank (1) is connected to a discharge valve (3). It also includes: A stirring structure (4) is provided on the inner wall of the mixing tank (1) for quickly mixing raw materials. The stirring structure (4) includes a storage cylinder (401) fixedly installed on the inner wall of the mixing tank (1), a top plate (405) for ejecting the raw materials in the storage cylinder (401), a nozzle (409) for adding foaming liquid, a guide plate (407) for facilitating the premixing of foaming liquid and raw materials, and a stirring plate (412) for stirring raw materials. A transmission structure (5) is provided on the outer wall of the mixing tank (1) for driving the stirring plate (412) to rotate. The transmission structure (5) includes an electric push rod (51) fixedly installed on the outer wall of the mixing tank (1), a frustum block (56) for indirectly driving the stirring plate (412) to rotate, and a pressure ring (54). A shaking structure (6) is provided on the outer wall of the storage cylinder (401) for continuously shaking the guide plate (407). The shaking structure (6) includes a fixing plate (61) fixedly installed on the outer wall of the storage cylinder (401), a leaf spring (63) for automatically resetting the storage cylinder (401), and a baffle ball (66) for changing the flow direction of the foaming liquid discharged from the nozzle (409). A servo motor (402) is fixedly connected to the lower surface of the mixing tank (1). A transmission rod (403) is fixedly connected to the output end of the servo motor (402). The transmission rod (403) is rotatably connected to the mixing tank (1). A threaded groove (404) is opened on the arc surface of the transmission rod (403). The top plate (405) is slidably sleeved on the arc surface of the transmission rod (403). The top plate (405) is slidably connected to the storage cylinder (401). Several steel needles (406) are fixedly connected to the upper surface of the top plate (405). The size of the steel needles (406) is adapted to the size of the threaded groove (404). The inner wall of the mixing tank (1) is fixedly connected to... There is an inlet pipe (408), the nozzle (409) is connected to the inlet pipe (408), the upper end of the transmission rod (403) is fixedly connected to a connecting plate (410), the connecting plate (410) is vertically rotatably connected to a rotating rod (411), the rotating rod (411) is parallel to the transmission rod (403), the stirring plate (412) is fixedly connected to the rotating rod (411), the lower end of the rotating rod (411) is rotatably connected to a shovel plate (413), the shovel plate (413) is slidably connected to the stirring tank (1) and the storage cylinder (401), the shovel plate (413) has a spiral structure, and the guide plate (407) is slidably connected to the storage cylinder (401). The transmission rod (403) has two annular grooves (414) on its arc surface, and the annular grooves (414) are connected to the threaded grooves (404); The inner wall of the mixing tank (1) is fixedly connected with several fixed tubes (415). The arc surface of the fixed tubes (415) is slidably connected with a slide tube (416). The arc surface of the fixed tubes (415) is fitted with a spring (417). The two ends of the spring (417) are fixedly connected to the mixing tank (1) and the slide tube (416) respectively. The slide tube (416) is located below the top plate (405).

2. The apparatus for preparing fly ash-based foamed ceramic insulation material according to claim 1, characterized in that: The output end of the electric actuator (51) is fixedly connected to a rectangular plate (52). The mixing tank (1) has a through hole (53) at a position relative to the rectangular plate (52). The rectangular plate (52) is slidably connected to the inner wall of the through hole (53). The rectangular plate (52) is fixedly connected to the pressure ring (54). The frustum block (56) is fixedly installed on the upper end of the rotating rod (411). An elastic ring (55) is fixedly connected to the surface of the pressure ring (54). The elastic ring (55) is made of rubber, and the pressure ring (54) is made of hard material.

3. The apparatus for preparing fly ash-based foamed ceramic insulation material according to claim 2, characterized in that: The circular arc surface of the frustum block (56) is fixedly connected with several friction strips (57).

4. The apparatus for preparing fly ash-based foamed ceramic insulation material according to claim 3, characterized in that: A sealing plate (58) is fixedly connected to the surface of the rectangular plate (52). The size of the sealing plate (58) is larger than the size of the through hole (53). The sealing plate (58) is slidably connected to the mixing tank (1).

5. The apparatus for preparing fly ash-based foamed ceramic insulation material according to claim 1, characterized in that: The two ends of the leaf spring (63) are fixedly connected to the fixing plate (61) and the guide plate (407) respectively. A bent rod (65) is fixedly connected to the surface of the connecting plate (410). The other end of the bent rod (65) is fixedly connected to the ball stop (66). The number of balls stop (66) is equal to the number of nozzles (409). The arc surface of the ball stop (66) is provided with several arc grooves (67).

6. The apparatus for preparing fly ash-based foamed ceramic insulation material according to claim 5, characterized in that: The surface of the fixed plate (61) is slidably connected to the limiting plate (62), the limiting plate (62) is fixedly connected to the top plate (405), and the surface of the leaf spring (63) is provided with a clearance hole (64), the clearance hole (64) is slidably connected to the top plate (405).

7. A method for preparing fly ash-based foamed ceramic insulation material, characterized in that: The apparatus for preparing fly ash-based foamed ceramic insulation material according to any one of claims 1-6 further includes the following steps: S1. Select raw materials by mass fraction: foaming liquid 25-50 parts, sepiolite 10-20 parts, gypsum 3-8 parts, ceramic waste 5-15 parts, fly ash 10-25 parts, and modifying additives 2-6 parts. S2. Select a ball mill with a rotation speed of 300-800 r / min, and pulverize the raw material with a solid material to grinding ball ratio of 1:2 until it passes through 280 mesh. The running time is 46-75 min to obtain powdered raw material. S3. Pour the powdered raw material into the storage cylinder (401) through the feed hopper (2), and use the top plate (405) to evenly discharge the powdered raw material so that the powdered raw material and the foaming agent are premixed. S4. Control the servo motor (402) to drive the stirring plate (412) to fully mix the powdered raw materials and foaming agent; S5. Discharge the raw material into the mold through the discharge valve; S6. Place the mold in a high-temperature calcining furnace and heat it from room temperature to 500°C at a rate of 12°C / min, then heat it to 1000°C at a rate of 6°C / min, then heat it to 1200°C at a rate of 4°C / min, then heat it to 1260-1300°C at a rate of 5°C / min, and then hold it at that temperature for 35-55 minutes. S7. After the mold cools down, remove the fly ash-based foamed ceramic insulation board from the mold and cut it into the required size using a cutting machine.

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