Phosphogypsum concrete block autoclaving device

Abstract

A steam curing device for phosphogypsum concrete blocks includes a guide seat with a bi-directionally open steam curing chamber. Sealed doors are installed on both sides of the chamber via hinges. The chamber has a steam generating structure that generates steam within it. Multiple folding doors divide the chamber's interior into several compartments. A base with symmetrically arranged track grooves and support platforms on these grooves engages with rollers of a material-carrying trolley. A conveying structure that works with the trolley is located at the bottom of the base. This structure allows for the separation of multiple heating, constant temperature, and cooling chambers within a single chamber, enabling automated processing. Different steam curing environments are created by controlling the amount of steam entering the chamber. This device is suitable for the integrated steam curing of small precast concrete blocks, offering convenient and flexible operation and high practicality.

Description

Technical Field

[0001] This utility model relates to the field of building material processing technology, and in particular to a steam curing device for phosphogypsum concrete blocks. Background Technology

[0002] Steam-cured concrete is a civil engineering material whose performance is improved through steam curing. It utilizes temperature and humidity control to accelerate the hydration reaction and is mainly used in the production of precast components and the manufacture of ballastless track slabs for high-speed railways and bridge beams. Its process is divided into a pre-curing period, a heating period (with steam condensation as the primary heat transfer method, followed by convection), a constant temperature period, and a cooling period. The rate of temperature change at each stage must be strictly controlled to avoid structural damage.

[0003] However, most existing concrete steam curing equipment is designed for use with large components. These systems typically do not have zoned curing; instead, they process the heating, temperature control, and cooling processes in a single chamber over several time periods, resulting in extremely long curing times per cycle. For smaller components such as concrete blocks, concrete slabs, and other small precast concrete parts, large-volume steam curing equipment is not necessary, and the number of precast concrete parts that can be cured in a single cycle is also relatively small. Therefore, there is an urgent need for a steam curing system suitable for use with small precast concrete blocks. Summary of the Invention The technical problem to be solved by this utility model is to provide a steam curing device for phosphogypsum concrete blocks, which is divided into multiple heating, constant temperature and cooling chambers in a single chamber, and is suitable for the integrated steam curing process of small precast concrete blocks; the partitions are coordinated and the processing is automatic. Different steam curing environments are created by controlling the amount of steam entering. After processing, the device is automatically transferred to the next chamber for further processing, which significantly reduces the labor consumption; the overall structure of the device is stable, fully adapted to the steam curing process, and is convenient, flexible and practical.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a steam curing device for phosphogypsum concrete blocks, including a guide seat, a steam curing chamber with bidirectional openings on the guide seat, sealed doors installed on both sides of the steam curing chamber via hinge structures, a steam generating structure acting on the steam curing chamber, multiple folding door structures inside the steam curing chamber for dividing the inner space of the steam curing chamber into multiple compartments, a base at the bottom of the steam curing chamber, symmetrical track grooves on the base, symmetrical support platforms on the track grooves, the symmetrically arranged support platforms cooperating with the rollers of the material-carrying trolley, and a conveying structure cooperating with the material-carrying trolley at the bottom of the base.

[0005] In a preferred embodiment, the conveying structure includes a bottom cavity located at the bottom of the base. A transmission chain symmetrically arranged on the bottom cavity to cooperate with the track groove is provided. Multiple push heads cooperating with the material-carrying trolley are provided on the transmission chain. The two ends of the transmission chain are sleeved on the sprockets that cooperate with them. The sprockets are connected to the side wall of the bottom cavity through a rotating shaft. Among the two sets of sprockets symmetrically arranged at the bottom of the track groove, the two sprockets on one side are connected to the two output ends of the dual-axis motor. The dual-axis motor is connected to the side wall of the bottom cavity through a fixed seat. The two sprockets on the other side are fixedly connected to each other through a synchronizing rod.

[0006] In a preferred embodiment, a water collection hood is provided at the bottom of the cavity, and a water pumping pipe is provided at the bottom of the water collection hood.

[0007] In a preferred embodiment, the side of the steam curing chamber is provided with multiple sets of exhaust structures that correspond to and cooperate with its internal compartments.

[0008] In a preferred embodiment, the top of the inner wall of the steam curing chamber is equipped with multiple sets of sensors that correspond to and cooperate with the internal chambers. In a preferred embodiment, guide sloping seats are provided on both sides of the base.

[0009] In a preferred embodiment, the steam generating structure includes a steam generator installed on the top of the steam curing chamber. The steam generator is equipped with a water supply pipe and an air supply pipe. The air supply pipe is equipped with multiple sets of branch pipes that correspond to the internal compartments of the steam curing chamber. The branch pipes are equipped with solenoid valves and air distribution pipes. The air distribution pipes are equipped with multiple jet pipes that connect to the interior of the steam curing chamber.

[0010] The steam curing device for phosphogypsum concrete blocks provided by this utility model, by adopting the above-described structure, has the following beneficial effects: (1) The single chamber is divided into multiple heating, constant temperature and cooling chambers, which are suitable for the integrated steam curing process of small precast concrete block components. (2) The compartments are coordinated and the automatic processing is carried out. Different steam curing environments are created by controlling the amount of steam entering. After processing, the process is automatically transferred to the next compartment for further processing, which significantly reduces manpower consumption. (3) The device has a stable overall structure, is fully compatible with the steam curing process, is easy and flexible to operate, and is highly practical. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 4 This is a schematic diagram of the steam curing chamber and base structure of this utility model.

[0015] Figure 5 This is a schematic diagram of the base and folding door structure of this utility model.

[0016] Figure 6 This is a schematic diagram of the conveying structure of this utility model in conjunction with the material-carrying trolley.

[0017] Figure 7 This is a schematic diagram of the steam generation structure of this utility model.

[0018] In the diagram: 1. Guide seat, 2. Steam curing chamber, 3. Sealed door, 4. Steam generating structure, 5. Folding door structure, 6. Exhaust structure, 7. Sensor, 8. Base, 9. Guide slant seat, 10. Track groove, 11. Support platform, 12. Carrying trolley, 13. Bottom cavity, 14. Water collection hood, 15. Water pumping pipe, 16. Sprocket, 17. Drive chain, 18. Push head, 19. Dual-shaft motor, 20. Fixed seat, 21. Steam generator, 22. Water supply pipe, 23. Air supply pipe, 24. Branch pipe, 25. Solenoid valve, 26. Air distribution pipe, 27. Jet pipe. Detailed Implementation

[0019] Example 1: like Figure 1-7The steam curing device for phosphogypsum concrete blocks includes a guide seat 1, which provides stable support for the steam curing chamber and facilitates its positioning and installation in the application environment. The guide seat 1 has a steam curing chamber 2 with bi-directional openings. Sealed doors 3 are installed on both sides of the steam curing chamber 2 via hinges. Sealing strips are provided on the inner side of the sealed doors 3 to enhance the sealing of the openings and prevent steam leakage during steam curing. The sealed doors 3 also have convenient opening and closing handles for easy operation. A steam generating structure 4 is installed on the steam curing chamber 2 to provide a stable steam supply to each compartment, meeting the humidity and temperature requirements of different compartments. Multiple folding door structures 5 are provided inside the steam curing chamber 2 to divide its internal space into multiple compartments. The folding door structures 5 can be opened and closed flexibly, with edges... Equipped with sealing components, when different batches of small prefabricated components need to be steam-cured in stages, the inner cavity of the steam curing chamber can be divided into independent compartments through a folding door structure to ensure that steam does not communicate between the compartments and to ensure a stable steam curing environment in each compartment. The bottom of the steam curing chamber 2 is equipped with a base 8, which has an overall frame structure to support the steam curing chamber and the internal components and related equipment. The bottom of the base 8 can also be equipped with an anti-slip pad to enhance the stability of the base when placed on the ground. The base 8 is symmetrically equipped with track grooves 10, which are arranged along the length of the base to guide the movement of the material trolley. The track grooves 10 are symmetrically equipped with support platforms 11, which are used to temporarily support the material trolley to keep it stable when loading and unloading components. The symmetrically arranged support platforms 11 cooperate with the rollers of the material trolley 12. The bottom of the base 8 is equipped with a conveying structure that cooperates with the material trolley 12. like Figure 5 and 6In a preferred embodiment, the conveying structure includes a bottom cavity 13 located at the bottom of the base 8. The bottom cavity 13 provides space for the installation of the conveying structure, and its inner wall is provided with a protective coating to prevent corrosion of the conveying structure components by steam condensate during long-term use. A drive chain 17 symmetrically arranged on the bottom cavity 13, cooperating with the track groove 10, is provided. Multiple push heads 18 cooperating with the material-carrying trolley 12 are provided on the drive chain 17. During operation, the drive chain 17 pushes the material-carrying trolley 12 along the track groove by contacting the ends of the push heads 18, thus achieving automated conveying of the material-carrying trolley. Both ends of the drive chain 17 are sleeved on... On the sprocket 16 that it is paired with, the sprocket 16 is connected to the side wall of the bottom cavity 13 through a rotating shaft. Among the two sets of sprockets 16 at the bottom of the symmetrically arranged track groove 10, the two sprockets 16 on one side are connected to the two output ends of the dual-axis motor 19. The dual-axis motor 19 is connected to the side wall of the bottom cavity 13 through a fixed seat 20. The fixed seat 20 is used to stably fix the dual-axis motor 19 and reduce the impact of motor vibration on the conveying structure. The two sprockets 16 on the other side are fixedly connected by a synchronizing rod. The synchronizing rod is used to ensure the synchronous rotation of the sprockets 16 on both sides, to ensure that the two sets of transmission chains 17 run at the same speed, and to avoid deviation when the material trolley is conveyed.

[0020] like Figure 3 and 6 In a preferred embodiment, the bottom of the cavity 13 is provided with a water collection hood 14, which has a funnel-shaped structure and is used to collect the water formed by the condensation of steam in the cavity, so as to avoid the accumulation of water affecting the operation of the conveying structure; the bottom of the water collection hood 14 is provided with a water pumping pipe 15, which can be connected to an external water pumping device to drain the water in the water collection hood in time and keep the inside of the cavity dry. like Figure 1 In the preferred embodiment, the side of the steam curing chamber 2 is provided with multiple sets of exhaust structures 6 that correspond to and cooperate with its internal chambers. The exhaust structure 6 includes an exhaust pipe and an exhaust valve. One end of the exhaust pipe is connected to the internal chamber of the steam curing chamber, and the other end extends to the outside. The exhaust valve can flexibly adjust its opening. When the pressure inside the chamber is too high or the steam concentration exceeds the standard, some steam is discharged by opening the exhaust valve to ensure that the steam curing environment parameters inside the chamber are stable. The outlet end of the exhaust pipe can also be provided with a filter component to prevent impurities generated during steam curing from being discharged with the steam and causing external pollution. like Figure 2 In the preferred embodiment, the top of the inner wall of the steam curing chamber 2 is provided with multiple sets of sensors 7 corresponding to its internal chambers. The sensors 7 include temperature sensors and humidity sensors, which are used to monitor the temperature and humidity data of each chamber in real time and transmit the data to the external control system. This allows operators to keep track of the steam curing environment in a timely manner. When the monitoring data deviates from the preset range, the steam generation structure and exhaust structure can be adjusted through the control system to ensure that the steam curing process meets the standards. like Figure 4 and5 In a preferred embodiment, the base 8 is provided with guide seats 9 on both sides. The guide seats 9 are inclined and their inclined surfaces face the inlet and outlet direction of the material trolley. When the material trolley moves from the external ground to the track groove of the base, the guide seats can guide the rollers of the material trolley to avoid deviation during docking and facilitate the material trolley to smoothly enter the track groove. like Figure 7 In a preferred embodiment, the steam generating structure 4 includes a steam generator 21 mounted on the top of the steam curing chamber 2. The steam generator 21 is equipped with a water supply pipe 22 and an air supply pipe 23. The water supply pipe 22 is used to replenish water to the steam generator, and a flow control component can be installed on the pipe to adjust the water supply amount according to the steam production demand, ensuring continuous and stable steam production by the steam generator. The air supply pipe 23 transports the steam generated by the steam generator to each branch pipe 24. The inner wall of the air supply pipe can be equipped with an insulation layer to reduce heat loss during steam transportation. The air supply pipe 23 is equipped with multiple sets of... The chamber is equipped with corresponding branch pipes 24, each with a solenoid valve 25 and a distribution pipe 26. The solenoid valve 25 controls the opening and closing of each branch pipe, enabling independent control of the steam supply to each chamber. When a chamber does not require steam or needs to adjust the supply, this can be achieved by controlling the solenoid valve. The distribution pipe 26 is equipped with multiple jet pipes 27 that connect to the interior of the steam curing chamber 2. The jet pipes 27 are evenly distributed on the side walls or top of the chambers inside the steam curing chamber, ensuring that steam is evenly injected into the chamber, guaranteeing uniform temperature and humidity in all areas of the chamber, and avoiding inconsistent steam curing quality of components due to uneven steam distribution.

[0021] Example 2: like Figure 1-7 The working principle of this utility model is as follows: Preliminary preparation: Operators will evenly stack the small precast components such as phosphogypsum concrete blocks and slabs to be steam-cured on the material trolley 12 to ensure that the components are placed securely and to prevent displacement during transportation. Cart docking guidance: The material-carrying trolley 12 is pushed to move towards the steam curing chamber 2. The guide seats 9 on both sides of the base 8 guide the trolley rollers through the inclined surface, so that the trolley is accurately aligned with the track groove 10 on the base, avoiding docking deviation and ensuring that the trolley enters the track groove smoothly.

[0022] Automated feeding into the chamber: The dual-axis motor 19 of the conveying structure at the bottom of the base 8 is started. The dual-axis motor drives the two sets of sprockets 16 on one side to rotate, and the sprockets on the other side rotate synchronously through the synchronizing rod to ensure that the running speed of the transmission chains 17 on both sides is consistent. The push head 18 on the transmission chain contacts the end of the material-carrying trolley 12 and pushes the trolley to move along the track groove 10 into the steam curing chamber 2. After the trolley reaches the preset chamber position, the dual-axis motor stops running, and the support platform 11 provides temporary support for the trolley, completing the automated feeding of the component.

[0023] Chamber division: Based on the batch quantity of components to be steam-cured and the requirements of the steam curing stage, operate the folding door structure 5 in the steam curing chamber 2 to divide the inner cavity of the steam curing chamber into multiple independent chambers (for example, if one batch of components needs to be heated and another batch needs to be kept at a constant temperature, it can be divided into two independent chambers); the sealing of the edge of the folding door ensures that the steam between each chamber is not interconnected, avoiding mutual interference between the environments of different steam curing stages. Sealing and protection: Close the sealed doors 3 on both sides of the steam curing chamber 2. The sealing strips on the inside of the doors are attached to the edge of the chamber to block the steam leakage channel, creating a sealed steam curing environment inside the chamber and reducing heat and steam loss.

[0024] Steam supply regulation: Start the steam generator 21 of the steam generating structure 4, and replenish water to the generator through the water supply pipe 22 (the flow control component on the water supply pipe adjusts the amount of water supply according to the steam production demand to ensure continuous steam production). The steam generated by the steam generator is transported through the air supply pipe 23. The heat insulation layer on the inner wall of the air supply pipe reduces the heat loss of the steam. According to the steam curing requirements of each compartment, control the solenoid valve 25 on the corresponding branch pipe 24: the solenoid valve of the compartment that needs steam curing is opened, and the steam enters the distribution pipe 26 through the branch pipe, and then is evenly sprayed into the compartment through the evenly distributed jet pipes 27 on the distribution pipe to ensure that the temperature and humidity of each area in the compartment are consistent; the solenoid valve of the compartment that does not need steam curing is closed to stop the steam supply, so as to realize independent steam control of each compartment.

[0025] Sensor 7 (temperature and humidity sensor) on the top of the inner wall of the steam curing chamber 2 collects the temperature and humidity data of each chamber in real time and transmits the data to the external control system. The operator can view the data through the control system. If the temperature of a certain chamber is too high / too low, or the humidity is too high / too low, the operator can detect the temperature.

[0026] Temperature / humidity deviation: Adjust the opening of the solenoid valve of the corresponding bronchus to increase / decrease the steam supply, or adjust the steam generation efficiency of the steam generator to achieve temperature and humidity correction. Excessive pressure: Open the corresponding exhaust structure 6 (open the exhaust valve) for this chamber to discharge some steam through the exhaust pipe, reducing the pressure inside the chamber. At the same time, the filter component at the outlet of the exhaust pipe filters impurities in the steam to prevent pollution of the external environment. Once the parameters inside the chamber return to the preset range (such as the temperature rate during the heating period meeting the process requirements and the temperature stabilizing during the constant temperature period), close the exhaust valve to ensure that the steam curing environment continues to meet the standards. Multi-stage synchronous steam curing: Since each compartment is independent and sealed and the steam, temperature and humidity can be controlled separately, different compartments can carry out different stages of steam curing processes simultaneously (such as steam curing during the heating period in compartment A, steam curing during the constant temperature period in compartment B, and steam curing during the cooling period in compartment C), without the need for "time-sharing" operation like traditional single-compartment operation, which greatly shortens the overall steam curing cycle.

[0027] Depressurization and Discharge: When a component in a certain compartment completes steam curing (e.g., when the cooling period ends and the temperature drops to a safe range), first open the exhaust structure 6 of that compartment to depressurize. After the pressure inside the compartment is balanced with the outside, open the corresponding folding door and the sealed door 3. Then, start the dual-shaft motor 19 of the conveying structure again. The transmission chain drives the pusher head 18 to push the material trolley 12 in the opposite direction, pushing the trolley out of the steam curing chamber along the track groove 10. The operator removes the component inside the chamber to complete the discharge. Water accumulation removal: During the steam curing process, steam will condense and form water when it comes into contact with low-temperature components (such as the inner wall of the bottom cavity 13 and the conveying structure). The water will flow along the inner wall of the bottom cavity into the funnel-shaped water collection hood 14 at the bottom. The water in the water collection hood will be drained regularly through the water pumping pipe 15 connected to the external water pumping equipment to keep the bottom cavity dry and prevent water accumulation from corroding the transmission chain 17, sprocket 16 and other components, thus ensuring the long-term stable operation of the conveying structure.

[0028] The beneficial effects of this utility model are as follows: This device, through the combination of a bidirectional open steam curing chamber and a folding door structure, flexibly divides the steam curing space into multiple independent small chambers. It does not require a large-volume steam curing chamber. The number of chambers can be flexibly selected according to the single steam curing volume of small precast components such as concrete blocks and concrete slabs, perfectly adapting to the steam curing needs of small components. It solves the problems of existing large steam curing devices being unsuitable for small components and having low space utilization. The folding door structure enables the partitioning and isolation of the steam curing chamber, allowing each chamber to independently carry out the pre-curing, heating, constant temperature, and cooling curing processes, eliminating the need for a "time-sharing cycle" of operations like in traditional single-chamber systems. Different batches of small components can undergo different stages of steam curing simultaneously in different chambers, significantly shortening the total steam curing time per cycle, improving steam curing efficiency, and adapting to the production capacity requirements of small components. The conveying structure at the bottom of the base uses a dual-axis motor to drive the transmission chain and push the material trolley, realizing the automated entry and exit of components into and out of the steam curing chamber, replacing manual handling and greatly reducing the labor intensity of operators; at the same time, it avoids collision and squeezing damage to components during manual handling, ensuring the integrity of components before and after steam curing. The steam generation structure enables independent steam supply to each compartment via solenoid valves. Combined with the uniform steam distribution design of the gas distribution pipe and jet pipe, it ensures uniform steam distribution within the compartment. Sensors monitor temperature and humidity in real time and feed them back to the control system. Combined with the exhaust structure, the pressure and steam concentration within the compartment are adjusted. In addition, the sealing design of the folding door and the sealed compartment door effectively avoids steam leakage and interference between compartments, ensuring that the steam curing environment of each compartment is stable and meets the standards. This reduces structural damage to components caused by temperature and humidity fluctuations and significantly improves the steam curing quality of small precast components. The funnel-shaped water collection hood at the bottom of the cavity can efficiently collect steam condensate and discharge it in a timely manner through the water pumping pipe, preventing water accumulation from corroding the sprockets, transmission chains and other components of the conveying structure. At the same time, it prevents water accumulation from affecting the movement of the material-carrying trolley, ensuring the long-term stable operation of the device and extending its overall service life.

Claims

1. A steam curing device for phosphogypsum concrete blocks, comprising a guide seat (1), characterized in that: The guide seat (1) is provided with a steam curing chamber (2) with a two-way opening. Both sides of the steam curing chamber (2) are equipped with sealed doors (3) through a hinge structure. The steam curing chamber (2) is provided with a steam generating structure (4) that acts on the chamber. The steam curing chamber (2) is provided with multiple folding door structures (5) to divide the inner cavity space of the steam curing chamber (2) into multiple chambers. The bottom of the steam curing chamber (2) is provided with a base (8). The base (8) is symmetrically provided with track grooves (10). The track grooves (10) are symmetrically provided with support platforms (11). The symmetrically provided support platforms (11) cooperate with the rollers of the material trolley (12). The bottom of the base (8) is provided with a conveying structure that cooperates with the material trolley (12).

2. The steam curing device for phosphogypsum concrete blocks according to claim 1, characterized in that: The conveying structure includes a bottom cavity (13) set at the bottom of the base (8). A transmission chain (17) that cooperates with the track groove (10) is symmetrically arranged on the bottom cavity (13). Multiple push heads (18) that cooperate with the material trolley (12) are provided on the transmission chain (17). The two ends of the transmission chain (17) are sleeved on the sprockets (16) that cooperate with it. The sprockets (16) are connected to the side wall of the bottom cavity (13) through a rotating shaft. Among the two sets of sprockets (16) at the bottom of the symmetrically arranged track groove (10), the two sprockets (16) on one side are connected to the two output ends of the dual-axis motor (19). The dual-axis motor (19) is connected to the side wall of the bottom cavity (13) through a fixed seat (20). The two sprockets (16) on the other side are fixedly connected by a synchronous rod.

3. The steam curing device for phosphogypsum concrete blocks according to claim 2, characterized in that: The bottom cavity (13) is provided with a water collection hood (14), and the bottom of the water collection hood (14) is provided with a water pumping pipe (15).

4. The steam curing device for phosphogypsum concrete blocks according to claim 1, characterized in that: The side of the steam curing chamber (2) is provided with multiple sets of exhaust structures (6) that correspond to and cooperate with its internal chambers.

5. The steam curing device for phosphogypsum concrete blocks according to claim 1, characterized in that: The top of the inner wall of the steam curing chamber (2) is equipped with multiple sets of sensors (7) that correspond to and cooperate with its internal chambers.

6. The steam curing device for phosphogypsum concrete blocks according to claim 1, characterized in that: The base (8) is provided with guide sloping seats (9) on both sides.

7. The steam curing device for phosphogypsum concrete blocks according to claim 1, characterized in that: The steam generating structure (4) includes a steam generator (21) installed on the top of the steam curing chamber (2). The steam generator (21) is equipped with a water supply pipe (22) and an air supply pipe (23). The air supply pipe (23) is equipped with multiple sets of branch pipes (24) corresponding to the internal compartments of the steam curing chamber (2). The branch pipe (24) is equipped with a solenoid valve (25) and a distribution pipe (26). The distribution pipe (26) is equipped with multiple jet pipes (27) connected to the inside of the steam curing chamber (2).

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