A belt forming processing device

Abstract

The utility model discloses a kind of belt forming processing device, including raw material batching unit, two-stage mixing unit, belt forming unit and compaction maintenance unit.The utility model is by "raw material batching unit-two-stage mixing unit-belt forming unit-compaction maintenance unit" integrated structure, to realize accurate batching with dynamic weigher and quantitative discharge valve in raw material batching unit, collocation two-stage mixing unit in first pretreatment box reverse spiral blade, vibrator, with two-stage uniform mixing box positive spiral blade, reverse spiral blade, the collaborative mixing of stirring paddle, solve the problem that the precision of prior art manual batching is low, single-stage mixing is easy to agglomerate stratification, ensure that phosphogypsum raw material is accurately mixed according to preset ratio, reduce raw material waste and uneven mixing, guarantee the strength of phosphogypsum floor heating belt after forming, heat preservation performance is stable, reduce the rate of defective products due to improper raw material handling.

Description

Technical Field

[0001] This utility model relates to the field of phosphogypsum floor heating production technology, specifically a belt forming and processing device. Background Technology

[0002] In the field of phosphogypsum resource utilization, phosphogypsum underfloor heating belts have become an important alternative to traditional underfloor heating building materials due to their combination of heat insulation, load-bearing performance, and environmental protection properties. The molding and processing of such belts requires key steps such as raw material proportioning, mixing, molding, compaction, and curing. However, existing processing equipment is not well adapted to the characteristics of phosphogypsum raw materials (easy to absorb moisture, high viscosity, and the need for precise proportioning), resulting in low production efficiency, poor product quality stability, and difficulty in meeting the needs of large-scale applications.

[0003] Existing phosphogypsum underfloor heating belt molding and processing equipment has significant defects in the raw material processing stage: the raw material ratio mostly relies on manual weighing and unloading, lacking precise control methods, and is prone to deviation from the preset value due to human operation errors, resulting in fluctuations in the strength and thermal insulation performance of the molded belt; the mixing stage mostly adopts a single-stage stirring structure, which can only achieve simple stirring of raw materials, cannot effectively break up the agglomeration of phosphogypsum powder, and is prone to raw material stratification, with some raw materials adhering to the wall of the mixing tank, which not only wastes raw materials, but also affects the subsequent molding quality.

[0004] In the belt forming process, the limitations of existing equipment are more prominent: the forming structure is mostly of fixed specifications, which cannot flexibly adapt to the processing needs of underfloor heating belts of different widths and thicknesses. When changing specifications, the entire set of material blocking components must be disassembled, which is cumbersome and time-consuming. During the operation of the conveyor belt, it is easy to deviate due to uneven force on both sides, resulting in missing material at the edge of the formed belt, uneven thickness, and difficulty in controlling dimensional accuracy. Frequent manual adjustments are required, which not only increases labor intensity but also easily interrupts the production process.

[0005] The separation of compaction and curing processes is another core issue with existing equipment: the compaction process often uses a single set of pressure rollers for simple pressing, resulting in uneven compaction force, especially at the edges of the belt, which is prone to insufficient compaction, leading to low belt density and easy cracking during later use; the curing process requires transferring the formed belt from the forming equipment to a dedicated curing room, which can easily cause damage to the belt due to bumps and collisions, and the temperature and humidity of the curing environment are difficult to control precisely, resulting in a long curing cycle, which seriously restricts the overall production efficiency, while also increasing the equipment footprint and production energy consumption.

[0006] In addition, the existing equipment has a high degree of independence in each link and lacks integrated collaborative control. It requires frequent human intervention between different processes, which not only makes it difficult to ensure the matching of parameters in each link, but also easily leads to quality problems due to human error.

[0007] In summary, existing phosphogypsum floor heating belt forming and processing equipment has significant shortcomings in terms of raw material processing precision, forming stability, production efficiency, and automation level, and cannot meet the needs of large-scale, high-quality production of modern phosphogypsum building materials. There is an urgent need to develop a belt forming and processing device that can solve the above problems. Utility Model Content

[0008] To address the problems mentioned in the background art, the purpose of this utility model is to provide a belt forming and processing device, which solves the problem that existing phosphogypsum floor heating belt forming equipment cannot meet the needs of large-scale, high-quality production of modern phosphogypsum building materials.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a belt forming and processing device, comprising a raw material batching unit, a two-stage mixing unit, a belt forming unit, and a compaction and curing unit. The raw material batching unit includes at least three sets of dynamic weighing devices and quantitative discharge valves. The input end of the dynamic weighing device is connected to a feed pipe, and the output end of the dynamic weighing device is connected to the quantitative discharge valve, which is connected to the two-stage mixing unit. The two-stage mixing unit includes a primary pretreatment tank and a secondary homogenizing tank. The top of the primary pretreatment tank is connected to each set of quantitative discharge valves. A first stirring motor is fixedly connected to the top of the primary pretreatment tank. The output shaft of the first stirring motor extends into the interior of the primary pretreatment tank and is fixedly connected to a first stirring shaft via a coupling. Reverse spiral blades are fixedly connected to the surface of the first stirring shaft. A solenoid valve is connected to the bottom of the primary pretreatment tank, and the output end of the solenoid valve is connected to the secondary homogenizing tank. A second stirring motor is fixedly connected to the bottom of the secondary homogenizing tank. The output shaft of the second stirring motor extends into the interior of the secondary homogenizing tank and is fixedly connected to a second stirring shaft via a coupling. A stirring paddle is fixedly connected to the surface of the second stirring shaft. A quantitative conveying pump is connected to one side of the secondary homogenizing tank, and the output end of the quantitative conveying pump is connected to a belt forming unit. The belt forming unit includes a conveyor belt and two side baffles, which are symmetrically arranged on both sides of the conveyor belt. The conveyor belt is used in conjunction with a quantitative conveying pump. The compaction and curing unit includes a support frame and a constant temperature and humidity curing channel. From the inlet to the outlet, a primary electric pressure rod, a secondary electric pressure rod, and a tertiary electric pressure rod are sequentially fixedly connected to the top of the support frame. The output ends of the primary, secondary, and tertiary electric pressure rods all pass through the support frame and are respectively fixedly connected to a pre-pressing plate, a pre-pressing roller, and a high-pressure compaction roller assembly. The pre-pressing plate, pre-pressing roller, and high-pressure compaction roller assembly are used in conjunction with a conveyor belt. The inlet of the constant temperature and humidity curing channel is connected to the conveyor belt. A conveyor is installed inside the constant temperature and humidity curing channel and is used in conjunction with the conveyor belt. A temperature and humidity controller is installed at the top of the constant temperature and humidity curing channel.

[0010] As a preferred embodiment of this invention, a PLC control box is provided on the front of the raw material batching unit, and a human-machine interface is provided on the surface of the PLC control box.

[0011] As a preferred embodiment of this utility model, a vibrator is provided at the bottom of the primary pretreatment box, a temperature sensor is provided on the inner wall of the secondary mixing box, and the temperature sensor is used in conjunction with the second stirring motor. The temperature sensor is electrically connected to the PLC control box, and positive spiral blades and negative spiral blades are symmetrically fixedly connected to the surface of the second stirring shaft.

[0012] As a preferred embodiment of this utility model, a support bar is fixedly connected to the top of the side baffle plate, an electric push rod is fixedly connected to the outer side of the support bar, a connecting plate is fixedly connected to the output end of the electric push rod, a detachable limiting baffle plate is installed on the inner side of the connecting plate, and limiting posts are symmetrically fixedly connected to the back of the limiting baffle plate, and the limiting posts are slidably connected to the support bar.

[0013] As a preferred embodiment of this utility model, the temperature and humidity controller includes a steam humidifier and an electric heating element. The steam humidifier and the electric heating element are located inside the constant temperature and humidity curing channel and are used in conjunction with it. A temperature and humidity sensor is installed inside the constant temperature and humidity curing channel, and the temperature and humidity sensor is electrically connected to the PLC control box.

[0014] As a preferred embodiment of this utility model, the two guide rollers at the input and output ends of the transmission belt form a 15° angle, and an infrared beam sensor is provided on the inner side of the side baffle, and the infrared beam sensor is used in conjunction with the limiting baffle.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the integrated structure of "raw material batching unit - two-stage mixing unit - belt forming unit - compaction and curing unit", combined with the precise batching design of dynamic weighing device and quantitative discharge valve in the raw material batching unit, and the synergistic mixing structure of reverse spiral blades and vibrator in the first-stage pretreatment box and positive spiral blades, reverse spiral blades and stirring paddle in the second-stage uniform mixing box in the two-stage mixing unit, can ensure that the phosphogypsum raw materials are accurately mixed according to the preset ratio, avoid raw material waste and uneven mixing, and thus ensure the strength and thermal insulation performance stability of the phosphogypsum floor heating belt after molding, and reduce product defects caused by improper raw material handling.

[0016] 2. This utility model utilizes an adjustable limiting structure composed of side baffles, support bars, electric push rods, connecting plates, and limiting columns in the belt forming unit, along with an anti-deviation design that combines an infrared beam sensor with the electric push rod. Combined with a graded compaction structure composed of a support frame, first-stage electric pressure rods, second-stage electric pressure rods, and third-stage electric pressure rods in the compaction and curing unit, and a synchronous curing design that works in conjunction with a constant temperature and humidity curing channel and a temperature and humidity controller, this design addresses the shortcomings of existing technologies, such as poor belt forming size adaptability, easy deviation, insufficient compaction density, and low efficiency due to separation of curing and forming. It can adapt to the forming of different specifications of underfloor heating belts, ensuring accurate forming dimensions, improving belt density, shortening the curing cycle, achieving continuous and efficient production, and reducing equipment maintenance and production time costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional perspective view of the structure of this utility model; Figure 3 A three-dimensional schematic diagram of the raw material batching unit and the two-stage mixing unit of this utility model used in conjunction; Figure 4 This is a partial three-dimensional cross-sectional view of the right side of the belt forming unit of this utility model.

[0018] In the diagram: 1. Raw material batching unit; 2. Two-stage mixing unit; 3. Belt forming unit; 4. Compaction and curing unit; 5. PLC control box; 101. Dynamic weighing device; 102. Quantitative discharge valve; 103. Feed pipe; 201. Primary pretreatment box; 202. Secondary homogenizing box; 203. First stirring motor; 204. First stirring shaft; 205. Reverse spiral blade; 206. Solenoid valve; 207. Second stirring motor; 208. Second stirring shaft; 209. Stirring paddle; 210. Quantitative conveyor. Pump; 211, Vibrator; 212, Positive spiral blade; 213, Negative spiral blade; 301, Conveyor belt; 302, Side baffle plate; 303, Support bar; 304, Electric push rod; 305, Connecting plate; 306, Limiting post; 401, Support frame; 402, Constant temperature and humidity curing channel; 403, First-stage electric pressure rod; 404, Second-stage electric pressure rod; 405, Third-stage electric pressure rod; 406, Pre-pressure plate; 407, Pre-pressure roller; 408, High-pressure compaction roller assembly; 409, Temperature and humidity controller. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4 As shown, the belt forming and processing device provided by this utility model includes a raw material batching unit 1, a two-stage mixing unit 2, a belt forming unit 3, and a compaction and curing unit 4. The raw material batching unit 1 includes at least three sets of dynamic weighing devices 101 (weighing accuracy ±0.1kg) and a quantitative discharge valve 102. The input end of the dynamic weighing device 101 is connected to the feed pipe 103, and the input ends of the at least three sets of feed pipes 103 are respectively connected to the phosphogypsum powder storage tank, the cement-based binder storage tank, and the modified additive storage tank. The output end of the dynamic weighing device 101 is connected to the quantitative discharge valve 102, and the output end of the quantitative discharge valve 102 is connected to the two-stage mixing unit 2. Before operation, the operator inputs the raw material ratio parameters (e.g., phosphogypsum powder: cement-based binder: modified additive = 85:12:3) through the human-machine interface of the PLC control box 5. After the system is started, The phosphogypsum powder storage tank, cement-based binder storage tank, and modified additive storage tank respectively feed raw materials to three sets of dynamic weighing devices 101 through corresponding feed pipes 103. The weighing sensors in the dynamic weighing devices 101 monitor the weight of the raw materials in real time. When the weight of the raw materials in a set of dynamic weighing devices 101 reaches the preset value, the PLC control box 5 controls the valve of the corresponding feed pipe 103 to close and stop feeding. Subsequently, the PLC control box 5 controls the quantitative discharge valve 102 to open and transport the raw materials in the dynamic weighing device 101 to the first-stage pretreatment box 201 of the two-stage mixing unit 2. The opening degree of the quantitative discharge valve 102 can be adjusted according to the flowability of the raw materials to ensure stable discharge speed and avoid raw material accumulation and blockage. The two-stage mixing unit 2 includes a primary pretreatment tank 201 and a secondary homogenizing tank 202. The top of the primary pretreatment tank 201 is connected to each set of quantitative discharge valves 102. A first stirring motor 203 is fixedly connected to the top of the primary pretreatment tank 201. The output shaft of the first stirring motor 203 extends into the interior of the primary pretreatment tank 201 and is fixedly connected to a first stirring shaft 204 via a coupling. Reverse spiral blades 205 are fixedly connected to the surface of the first stirring shaft 204. A solenoid valve 206 is connected to the bottom of the primary pretreatment tank 201, and the output end of the solenoid valve 206 is connected to the secondary homogenizing tank 202. A second stirring motor 207 is fixedly connected to the bottom of the secondary homogenizing tank 202. The output shaft of the second stirring motor 207 extends into the interior of the secondary homogenizing tank 202 and is fixedly connected to a second stirring shaft 208 via a coupling. A stirring paddle 209 is fixedly connected to the surface of the stirring shaft 208. A metering pump 210 is connected to one side of the secondary mixing tank 202. The output end of the metering pump 210 is connected to the belt forming unit 3. The inner walls of the primary pretreatment tank 201 and the secondary mixing tank 202 are coated with a polytetrafluoroethylene (PTFE) anti-stick coating. The PTFE anti-stick coating reduces the adhesion of raw materials such as phosphogypsum powder and cement-based binder to the tank wall, avoiding raw material waste. At the same time, it prevents the adhered raw materials from clogging the solenoid valve 206 and the feed inlet of the metering pump 210, ensuring smooth raw material transportation and ensuring that the raw materials participate in the mixing process throughout the process. It avoids the proportion deviation and clumping problems caused by wall residue, ensures the uniformity of the mixture, and improves the quality stability of the phosphogypsum floor heating belt. In addition, it reduces the difficulty of cleaning the inner wall of the tank, reduces the damage to the equipment caused by mechanical cleaning, extends the maintenance cycle, and improves production efficiency. The belt forming unit 3 includes a conveyor belt 301 and two side baffles 302. The side baffles 302 are symmetrically arranged on both sides of the conveyor belt 301. The conveyor belt 301 is used in conjunction with the quantitative conveying pump 210. The compaction and curing unit 4 includes a support frame 401 and a constant temperature and humidity curing channel 402. From the inlet to the outlet, the top of the support frame 401 is sequentially connected to a primary electric pressure rod 403, a secondary electric pressure rod 404, and a tertiary electric pressure rod 405. The output ends of the primary electric pressure rod 403, the secondary electric pressure rod 404, and the tertiary electric pressure rod 405 all pass through the support frame 401 and are respectively fixedly connected to a pre-pressing plate 406, a pre-pressing roller 407, and a high-pressure compaction roller group 408. The pre-pressing plate 406 and the pre-pressing roller 407 are also connected to the pre-pressing roller group 408. 07 and the high-pressure compaction roller group 408 are used in conjunction with the transmission belt 301. The top of the pre-press plate 406, the pre-press roller 407 and the high-pressure compaction roller group 408 are symmetrically fixed with guide columns, and the guide columns are slidably connected to the support frame 401. The feed end of the constant temperature and humidity curing channel 402 is connected to the transmission belt 301. The constant temperature and humidity curing channel 402 is equipped with a conveyor, and the conveyor is used in conjunction with the transmission belt 301. The top of the constant temperature and humidity curing channel 402 is equipped with a temperature and humidity controller 409.

[0021] refer to Figure 1 The front of the raw material batching unit 1 is equipped with a PLC control box 5, and the surface of the PLC control box 5 is equipped with a human-machine interface.

[0022] As a technical optimization of this utility model, the control logic of each execution component of the device is integrated through the PLC control box 5. The operator can preset parameters such as raw material ratio, stirring speed, compaction pressure, and curing temperature and humidity through the human-machine interface, and at the same time view the operating status of each unit in real time (such as the weighing data of the dynamic weigher 101 and the monitoring data of the temperature sensor). When the equipment malfunctions, such as the raw material weighing deviation exceeding the tolerance or the temperature in the secondary mixing tank 202 being too high, the PLC control box 5 can automatically issue an audible and visual warning and suspend the corresponding process, reducing manual intervention while improving the safety and stability of equipment operation. refer to Figure 2 The bottom of the primary pretreatment tank 201 is equipped with a vibrator 211 (vibration frequency of 50-60Hz). The inner wall of the secondary mixing tank 202 is equipped with a temperature sensor, which works in conjunction with the second stirring motor 207. The temperature sensor is electrically connected to the PLC control box 5 to transmit temperature data in real time. When the temperature inside the secondary mixing tank 202 exceeds 50℃, the PLC control box 5 controls the second stirring motor 207 to reduce the speed of the output shaft. The surface of the second stirring shaft 208 is symmetrically fixed with a positive spiral blade 212 and a negative spiral blade 213. The outer side of the stirring paddle 209 is fixedly connected with a scraper, which works in conjunction with the inner wall of the secondary mixing tank 202. The surface of the scraper is equipped with an elastic scraping plate.

[0023] As a technical optimization of this utility model, the vibrator 211 at the bottom of the first-stage pretreatment box 201 generates high-frequency vibration, which can break the agglomeration of raw materials such as phosphogypsum powder. In conjunction with the reverse spiral blades 205 on the surface of the first stirring shaft 204, the raw materials are pushed from both ends to the center to form convective premixing, which improves the premixing uniformity. The positive spiral blades 212 and the reverse spiral blades 213 in the second-stage homogenizing box 202 rotate in opposite directions, which can form a shearing and tumbling effect on the raw materials to achieve deep homogenization. At the same time, the elastic scraper on the scraper surface can closely adhere to the box wall to scrape off the adhering raw materials and avoid waste and scaling. The temperature sensor monitors the temperature change in real time during the homogenization process. When the temperature exceeds 50℃ (the critical temperature at which the raw materials are prone to agglomeration), the PLC control box 5 automatically reduces the speed of the second stirring motor 207 to prevent the raw materials from agglomerating due to frictional heat and ensure the stability of the mixed material quality.

[0024] refer to Figure 1 , Figure 2 and Figure 3A support bar 303 is fixedly connected to the top of the side baffle plate 302. An electric push rod 304 is fixedly connected to the outside of the support bar 303. A connecting plate 305 is fixedly connected to the output end of the electric push rod 304. A detachable limiting baffle is installed on the inner side of the connecting plate 305. Limiting posts 306 are symmetrically fixedly connected to the back of the limiting baffle. The limiting posts 306 are slidably connected to the support bar 303. A sliding groove adapted to the limiting post 306 is opened on the surface of the support bar 303, so that the limiting post 306 slides along the sliding groove.

[0025] As a technical optimization of this utility model, the support bar 303 provides a stable installation base for the electric push rod 304. The electric push rod 304 can push the connecting plate 305 to move the limiting baffle laterally, thereby adjusting the distance between the limiting baffles on both sides. This adapts to the processing of phosphogypsum floor heating belts of different widths, eliminating the need to replace the entire baffle structure and shortening the specification switching time by a certain amount. The sliding cooperation between the limiting post 306 and the support bar 303 can limit the movement trajectory of the limiting baffle, preventing its deviation from causing deviation in the belt forming size. At the same time, the detachable limiting baffle facilitates later maintenance and replacement, reducing equipment operation and maintenance costs.

[0026] refer to Figure 1 The temperature and humidity controller 409 includes a steam humidifier and an electric heating element. The steam humidifier and electric heating element are located inside the constant temperature and humidity curing channel 402 and work in conjunction with it. A temperature and humidity sensor is installed inside the constant temperature and humidity curing channel 402, and the temperature and humidity sensor is electrically connected to the PLC control box 5 to ensure that the temperature inside the channel is stable at 20-25℃ and the relative humidity is stable at 80-85%. The operating speed of the conveyor is matched with the curing time. The operating speed of the conveyor is set according to the length of the constant temperature and humidity curing channel 402 to ensure that the curing time is controlled within 30-45 minutes. In addition, the operating speed of the conveyor is synchronized with the operating speed of the conveyor belt 301 to ensure that the forming belt enters the constant temperature and humidity curing channel 402 smoothly.

[0027] As a technical optimization of this utility model, the steam humidifier and electric heating tube of the temperature and humidity controller 409 work together, combined with the real-time feedback of the temperature and humidity sensor. The PLC control box 5 can dynamically adjust the steam supply and electric heating power to accurately control the temperature and humidity in the constant temperature and humidity curing channel 402 at 20-25℃ and 80-85% (the optimal environmental parameters for the initial curing of phosphogypsum mixture). Compared with traditional natural curing, this improves the early strength of the belt and shortens the curing cycle. The matching design of the conveyor running speed and the channel length can ensure that the curing time of the formed belt in the channel is stable at 30-45 minutes, avoiding insufficient curing due to excessively fast transmission speed or affecting production efficiency due to excessively slow transmission speed, and achieving coordinated synchronization of curing and conveying.

[0028] refer to Figure 4The two guide rollers at the input and output ends of the conveyor belt 301 form a 15° angle. An infrared beam sensor (not shown) is installed on the inner side of the side baffle 302. The infrared beam sensor works in conjunction with the limit baffle. The infrared beam sensor monitors the position of the belt edge in real time. When the deviation exceeds 0.5mm, the PLC control box 5 controls the electric push rod 304 to push the limit baffle for fine adjustment, so that the belt returns to the center position. That is, when the infrared beam sensor detects that the belt is deviating to the left, the PLC control box 5 controls the left electric push rod 304 to push the limit baffle to the right for fine adjustment, and vice versa.

[0029] As a technical optimization of this utility model, the guide rollers at both ends of the transmission belt 301, which are at a 15° angle, can pre-guide the belt at the beginning of its operation, reducing the initial risk of deviation. The infrared photoelectric sensor inside the side baffle 302 can monitor the edge position of the belt in real time with a detection accuracy of ±0.2mm. When the deviation exceeds 0.5mm, the PLC control box 5 immediately controls the electric push rod 304 on the corresponding side to move and push the limit baffle for fine adjustment and correction. Compared with traditional manual correction, the deviation correction efficiency is improved, effectively avoiding problems such as edge material shortage and uneven thickness caused by belt deviation, ensuring that the size deviation of the formed belt is controlled within ±0.5mm, and improving the product qualification rate.

[0030] The working principle and usage process of this utility model are as follows: First, preparations are made before starting the equipment. The operator inputs the preset proportion parameters of phosphogypsum powder, cement-based binder, and modified additives through the human-machine interface on the PLC control box 5 on the front of the raw material batching unit 1. At the same time, the speed of the first stirring motor 203 and the second stirring motor 207, the compaction pressure of the first-stage electric pressure rod 403, the second-stage electric pressure rod 404, and the third-stage electric pressure rod 405, and the target temperature (20-25℃) and relative humidity (80-85%) in the constant temperature and humidity curing channel 402 are set. Then, the dynamic weighing device 101, the quantitative unloading valve 102, and the feed pipe 1 are checked. 03. Check that all components, including the primary pretreatment box 201, secondary mixing box 202, conveyor belt 301, side baffle plate 302, support bar 303, electric push rod 304, connecting plate 305, limit post 306, support frame 401, primary electric pressure rod 403, secondary electric pressure rod 404, tertiary electric pressure rod 405, pre-pressing plate 406, pre-pressing roller 407, high-pressure compaction roller group 408, temperature and humidity controller 409, are intact and free from blockage, jamming, or damage. Then, open the discharge valves of the phosphogypsum powder storage tank, cement-based binder storage tank, and modified additive storage tank so that the raw materials can enter the dynamic weighing device 101 through the corresponding feed pipe 103. After the equipment is started, the three sets of feed pipes 103 of the raw material batching unit 1 respectively feed phosphogypsum powder, cement-based binder and modified additive to the three sets of dynamic weighing devices 101. The weighing sensors in the dynamic weighing devices 101 monitor the weight of the raw materials in real time and transmit the data to the PLC control box 5. When the weight of the raw materials in a set of dynamic weighing devices 101 reaches the preset value, the PLC control box 5 controls the valve of the corresponding feed pipe 103 to close and stop feeding. Then the PLC control box 5 controls the quantitative discharge valve 102 at the output end of each set of dynamic weighing devices 101 to open and transport the weighed qualified raw materials to the first-stage pretreatment box 201 of the two-stage mixing unit 2. The quantitative discharge valve 102 adjusts the opening according to the flowability of the raw materials to ensure stable discharge speed. After the raw materials enter the primary pretreatment tank 201, the PLC control box 5 starts the first stirring motor 203. The output shaft of the first stirring motor 203 drives the first stirring shaft 204 to rotate through a coupling. The reverse spiral blades 205 on the surface of the first stirring shaft 204 gather the raw materials from the upper and lower ends of the primary pretreatment tank 201 towards the center. At the same time, the vibrator 211 at the bottom of the primary pretreatment tank 201 is started. The vibrator 211 breaks up the raw material agglomeration with a vibration frequency of 50-60Hz. The raw materials are initially premixed under the combined action of stirring by the reverse spiral blades 205 and vibration by the vibrator 211. After premixing, the PLC control box 5 controls the solenoid valve 206 at the bottom of the primary pretreatment tank 201 to open, and the premixed raw materials are transported to the secondary homogenizing tank 202. The second stirring motor 207 of the secondary homogenizing tank 202 starts, and its output shaft drives the second stirring shaft 208 to rotate through a coupling. The positive spiral blades 212 and negative spiral blades 213 on the surface of the mixing shaft 208 operate synchronously with the stirring paddle 209. The positive spiral blades 212 spiral upward and the negative spiral blades 213 spiral downward, forming an up-and-down shearing force on the raw materials. The stirring paddle 209 drives the raw materials to move in a circular motion. The scraper on the outside of the stirring paddle 209 and the elastic scraper on the surface of the scraper scrape off the raw materials adhering to the inner wall of the secondary mixing tank 202, achieving 360° uniform mixing without dead angles. During the uniform mixing process, the temperature sensor on the inner wall of the secondary mixing tank 202 monitors the temperature inside the tank in real time. When the temperature exceeds 50°C, the PLC control box 5 controls the second stirring motor 207 to reduce the speed to prevent the raw materials from clumping. After the uniform mixing is completed, the quantitative conveying pump 210 on one side of the secondary mixing tank 202 is started. The quantitative conveying pump 210 adjusts the conveying volume according to the running speed of the conveyor belt 301, and conveys the mixture of the uniform mixing grid to the conveyor belt 301 of the belt forming unit 3. The conveyor belt 301 starts running at a preset speed. The quantitative conveying pump 210 evenly spreads the mixture on the surface of the conveyor belt 301. The side baffles 302 on both sides of the conveyor belt 301 prevent the mixture from overflowing to both sides. At the same time, the PLC control box 5 controls the electric push rod 304 on the outside of the top support bar 303 of the side baffle 302 to move according to the width specification of the phosphogypsum floor heating belt to be processed. The output end of the electric push rod 304 pushes the connecting plate 305 to drive the inner detachable limit baffle to move laterally. The limit baffle is symmetrically fixed on the back. Position column 306 slides along support bar 303 to ensure smooth movement of limit baffle. When the distance between the limit baffles on both sides reaches the preset width, electric push rod 304 stops to laterally limit the mixture. Guide rollers at a 15° angle between the input and output ends of transmission belt 301 pre-guide the belt. Infrared photoelectric sensor inside side baffle 302 monitors the edge position of the forming belt in real time. When the deviation exceeds 0.5mm, PLC control box 5 controls electric push rod 304 on the corresponding side to push the limit baffle for fine adjustment, so that the belt returns to the center position. The forming belt is conveyed by the transmission belt 301 to the support frame 401 of the compaction and curing unit 4. First, the first-stage electric pressure bar 403 is activated, and its output end passes through the support frame 401 to push the pre-pressure plate 406 downward. The guide columns symmetrically fixed at the top of the pre-pressure plate 406 slide along the support frame 401 to initially compact the mixture. After initial compaction, the forming belt continues to move to the bottom of the second-stage electric pressure bar 404. The second-stage electric pressure bar 404 pushes the pre-pressure roller 407 downward to contact the surface of the forming belt. The pre-pressure roller 407 rolls with the transmission belt 301 to further compact and flatten the surface of the forming belt. Then, the forming belt moves to the bottom of the third-stage electric pressure bar 405. The third-stage electric pressure bar 405 pushes the high-pressure compaction roller group 408 downward. The two pressure rollers of the high-pressure compaction roller group 408 rotate in opposite directions synchronously to deeply compact the forming belt and ensure that the density reaches the required level. The guide columns at the top of the high-pressure compaction roller group 408 slide along the support frame 401 to ensure uniform compaction. After deep compaction, the molded belt enters the constant temperature and humidity curing channel 402 via the conveyor belt 301. The temperature and humidity controller 409 installed at the top of the constant temperature and humidity curing channel 402 is activated. The steam humidifier of the temperature and humidity controller 409 sprays steam into the channel, and the electric heating tube heats the channel. The temperature and humidity sensor in the channel transmits data to the PLC control box 5 in real time. The PLC control box 5 adjusts the steam spray volume of the steam humidifier and the power of the electric heating tube according to the data to maintain the temperature in the channel at 20-25℃ and the relative humidity at 80-85%. The molded belt moves at a preset speed through the conveyor in the channel. The speed of the conveyor is set according to the length of the constant temperature and humidity curing channel 402 to ensure that the molded belt completes the initial curing for 30-45 minutes in the channel. After curing, the molded belt is output from the discharge end of the constant temperature and humidity curing channel 402 and enters the subsequent finished product collection process. The equipment completes a complete phosphogypsum floor heating belt molding process. If continuous production is required, the above steps can be repeated. After production is completed, the power supply to all components is turned off, and the components of the equipment are cleaned and maintained.

[0031] 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.

[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A belt forming and processing device, comprising a raw material batching unit (1), a two-stage mixing unit (2), a belt forming unit (3), and a compaction and curing unit (4), characterized in that: The raw material batching unit (1) includes at least three sets of dynamic weighing devices (101) and quantitative discharge valves (102). The input end of the dynamic weighing device (101) is connected to the feed pipe (103), the output end of the dynamic weighing device (101) is connected to the quantitative discharge valve (102), and the output end of the quantitative discharge valve (102) is connected to the two-stage mixing unit (2). The two-stage mixing unit (2) includes a primary pretreatment tank (201) and a secondary homogenizing tank (202). The top of the primary pretreatment tank (201) is connected to each set of quantitative discharge valves (102). A first stirring motor (203) is fixedly connected to the top of the primary pretreatment tank (201). The output shaft of the first stirring motor (203) extends into the interior of the primary pretreatment tank (201) and is fixedly connected to a first stirring shaft (204) via a coupling. Reverse spiral blades (205) are fixedly connected to the surface of the first stirring shaft (204). The bottom of the primary pretreatment tank (201) is connected to an electric... A solenoid valve (206) is provided, and the output end of the solenoid valve (206) is connected to a secondary mixing tank (202). A second stirring motor (207) is fixedly connected to the bottom of the secondary mixing tank (202). The output shaft of the second stirring motor (207) extends into the interior of the secondary mixing tank (202) and is fixedly connected to a second stirring shaft (208) via a coupling. A stirring paddle (209) is fixedly connected to the surface of the second stirring shaft (208). A metering pump (210) is connected to one side of the secondary mixing tank (202). The output end of the metering pump (210) is connected to a belt forming unit (3). The belt forming unit (3) includes a transmission belt (301) and two side baffles (302). The side baffles (302) are symmetrically arranged on both sides of the transmission belt (301). The transmission belt (301) is used in conjunction with a quantitative conveying pump (210). The compaction and curing unit (4) includes a support frame (401) and a constant temperature and humidity curing channel (402). A primary electric pressure rod (403), a secondary electric pressure rod (404), and a tertiary electric pressure rod (405) are sequentially fixedly connected to the top of the support frame (401) from the inlet to the outlet. The output ends of the primary electric pressure rod (403), the secondary electric pressure rod (404), and the tertiary electric pressure rod (405) all penetrate the support frame (401) and are respectively fixedly connected to a pre-pressing plate (406) and a pre-pressing plate (405). Roller (407) and high pressure compaction roller group (408), and pre-press plate (406), pre-press roller (407) and high pressure compaction roller group (408) are used in conjunction with conveyor belt (301). The feed end of the constant temperature and humidity curing channel (402) is connected to the conveyor belt (301). The constant temperature and humidity curing channel (402) is equipped with a conveyor, and the conveyor is used in conjunction with the conveyor belt (301). A temperature and humidity controller (409) is installed on the top of the constant temperature and humidity curing channel (402).

2. The belt forming and processing device according to claim 1, characterized in that: The raw material batching unit (1) is provided with a PLC control box (5) on the front, and the surface of the PLC control box (5) is provided with a human-machine interface.

3. The belt forming and processing device according to claim 2, characterized in that: The bottom of the primary pretreatment box (201) is equipped with a vibrator (211), the inner wall of the secondary mixing box (202) is equipped with a temperature sensor, and the temperature sensor is used in conjunction with the second stirring motor (207). The temperature sensor is electrically connected to the PLC control box (5). The surface of the second stirring shaft (208) is symmetrically fixed with a positive spiral blade (212) and a negative spiral blade (213).

4. The belt forming and processing device according to claim 3, characterized in that: A support bar (303) is fixedly connected to the top of the side baffle plate (302). An electric push rod (304) is fixedly connected to the outside of the support bar (303). A connecting plate (305) is fixedly connected to the output end of the electric push rod (304). A detachable limiting baffle is installed on the inner side of the connecting plate (305). A limiting post (306) is symmetrically fixedly connected to the back of the limiting baffle, and the limiting post (306) is slidably connected to the support bar (303).

5. The belt forming and processing device according to claim 4, characterized in that: The temperature and humidity controller (409) includes a steam humidifier and an electric heating tube. The steam humidifier and the electric heating tube are located inside the constant temperature and humidity maintenance channel (402) and are used in conjunction with it. A temperature and humidity sensor is installed inside the constant temperature and humidity maintenance channel (402), and the temperature and humidity sensor is electrically connected to the PLC control box (5).

6. The belt forming and processing device according to claim 5, characterized in that: The two guide rollers at the input and output ends of the transmission belt (301) form a 15° angle. An infrared beam sensor is provided on the inner side of the side baffle (302), and the infrared beam sensor is used in conjunction with the limiting baffle.

Images