A highway precast cement board curing device

Abstract

This application provides a precast concrete slab road maintenance device, comprising: a maintenance chamber extending along a first direction, including a maintenance cavity located above ground and a steam cavity located underground; a perforated plate is provided between the maintenance cavity and the steam cavity for placing the concrete slab and allowing steam to pass through; an evaporation mechanism including a water collection box extending along the first direction and S-shaped heat dissipation fins located below the water collection box; the number of heat dissipation fins includes multiple fins, which are parallel to each other and evenly arranged along the first direction; an adjustment cavity is provided inside the heat dissipation fins for independently controlling the temperature inside the maintenance chamber; a water storage device including a high-temperature water tank for supplying water to the water collection box and a low-temperature water tank for recovering the drainage from the heat dissipation fins; a passive heating device including a solar heating device installed on the top of the maintenance chamber; the output end of the solar heating device is connected to the high-temperature water tank, and the input end is connected to the high-temperature water tank and the low-temperature water tank respectively; and an active heating device including a heat pump system, which is connected to the high-temperature water tank and the adjustment cavity respectively.

Description

Technical Field

[0001] This invention belongs to the field of precast slab maintenance technology, specifically relating to a maintenance device for precast cement slabs for highways. Background Technology

[0002] In highway construction, the curing of precast concrete slabs is a crucial process to ensure their strength, durability, and dimensional stability. Currently, the curing of precast concrete slabs mainly employs two methods: natural curing and steam curing. Natural curing has a long cycle, requires a large area, and is significantly affected by climate conditions, making it difficult to meet the efficiency and quality consistency requirements of large-scale production. Therefore, steam curing chambers are widely used in engineering projects to accelerate curing, by introducing high-temperature steam into the chamber to increase temperature and humidity.

[0003] However, existing steam curing equipment still has many shortcomings in practical applications. First, most steam generating devices rely on electric heating or fuel combustion, resulting in high energy consumption. The large amounts of high-temperature condensate produced are often directly discharged, wasting water resources and losing significant amounts of waste heat, leading to high operating costs. Furthermore, the steam release method is relatively simple, often involving direct injection through pipes. This results in uneven contact between the steam and the cement board surface, easily causing localized water accumulation or water films, affecting heat transfer efficiency and the surface quality of the board.

[0004] Therefore, the above problems urgently need to be solved. Summary of the Invention

[0005] In view of the above-mentioned defects or deficiencies in the prior art, a road precast cement slab curing device is provided.

[0006] This application provides a highway precast cement slab curing device, including... A curing chamber, which extends along a first direction, includes a curing chamber located on the ground and a steam chamber located underground; A perforated plate is provided between the curing chamber and the steam chamber for placing cement slabs and allowing steam to pass through; An evaporation mechanism, comprising a water collection box extending along the first direction and S-shaped heat sinks located below the water collection box; The number of heat sinks includes multiple ones, which are parallel to each other and evenly arranged along the first direction; The heat sink has an internal adjustment chamber for independently controlling the temperature inside the curing chamber; A water storage device, the water storage device comprising a high-temperature water tank for supplying water to the water collection box and a low-temperature water tank for recovering the drainage from the heat sink; A passive heating device, the passive heating device including a solar heating device installed on the top of the curing chamber; The output end of the solar heating device is connected to the high-temperature water tank, and the input end is connected to both the high-temperature water tank and the low-temperature water tank. An active heating device, comprising a heat pump system, is connected to the high-temperature water tank and the regulating chamber, respectively.

[0007] Furthermore, The heat pump system includes a condenser for exchanging heat and an evaporator for exchanging cooling. The output end of the condenser is connected to the high-temperature water tank and the input end of the regulating chamber, respectively, for independent heating or simultaneous heating. The input end of the condenser is connected to the output end of the high-temperature water tank and the regulating chamber, respectively, to form a circulation.

[0008] Furthermore, The output end of the evaporator is connected to the input end of the regulating cavity, and the input end is connected to the output end of the regulating cavity to form a circulation. The input end of the regulating chamber is equipped with a water tank to maintain water circulation.

[0009] Furthermore, The input end of the regulating chamber is also connected to the output end of the high-temperature water tank, and the output end is also connected to the input end of the low-temperature water tank to form a circulation.

[0010] Furthermore, The porous plate is also equipped with an array of pressure sensors for detecting the area and weight of the cement board; The pressure sensors are electrically connected to the control module and configured to upload detection signals. The control module is configured to obtain the area and weight of the cement board based on the received signal, and to calculate the volume of the cement board as well as the curing temperature and humidity. The control module is configured to call the database to obtain the curing temperature and humidity based on the area and volume of the cement board.

[0011] Furthermore, The curing chamber is also equipped with a temperature sensor and a humidity sensor. The temperature sensor and humidity sensor are electrically connected to the control module and configured to upload detection signals. The control module is configured to control the temperature of the regulating cavity and the input amount of the water collection box by comparing the acquired temperature with the detected temperature and the acquired humidity with the detected humidity.

[0012] Furthermore, The number of water collection boxes includes multiple boxes, which are evenly arranged in the steam chamber; The bottom of the water collection box is provided with multiple drainage holes corresponding to the heat sink, which are used to simultaneously deliver high-temperature water to the heat sink; The plurality of drainage holes are evenly arranged along the first direction at the bottom of the water collection box.

[0013] Furthermore, The bottom of the steam chamber is provided with a water return groove corresponding to the heat sink; The output end of the return water tank is equipped with a filter device for filtering the recycled water; Multiple return water tanks are connected to sedimentation tanks for settling the recycled water.

[0014] Furthermore, The sedimentation tank is equipped with a main baffle and an auxiliary baffle. The main baffle extends perpendicularly to the first direction and is used to divide the interior of the sedimentation tank into a recovery chamber and a sedimentation chamber. The auxiliary baffles include multiple baffles and extend in a direction parallel to the first direction, for dividing the sedimentation chamber into multiple independent chambers.

[0015] The advantages and positive effects of this application are: This technical solution places the curing chamber above the steam chamber, utilizing the natural upward flow of steam to ensure a more uniform steam distribution within the curing chamber, preventing localized over-humidity or insufficient heating. Multiple S-shaped heat sinks within the steam chamber effectively increase the exposed evaporation area of ​​the water, significantly improving evaporation efficiency. This allows for sufficient steam generation even at lower temperatures using solar heating, significantly reducing energy consumption. Simultaneously, a heat pump system is incorporated, which can both supplement the high-temperature water tank with auxiliary heating when sunlight is insufficient, ensuring a continuous steam supply, and independently control the temperature of the regulating chamber within the heat sinks. This enables precise and independent control of the curing chamber's temperature and humidity, thereby improving curing effectiveness and production efficiency. Attached Figure Description

[0016] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a structural schematic diagram of the precast cement slab curing equipment for highways provided in the embodiments of this application; Figure 2 This is a schematic diagram of the water supply pipeline of the precast cement slab curing equipment for highways provided in the embodiments of this application; Figure 3 A schematic diagram of the steam mechanism of the precast cement slab curing equipment for highways provided in this application embodiment.

[0017] The text labels in the diagram represent: 100-Cure chamber; 110-Cure cavity; 120-Steam cavity; 130-Perforated plate; 200-Steam mechanism; 201-Water collection box; 202-Heat sink; 203-Regulating cavity; 210-High temperature water tank; 220-Low temperature water tank; 230-Solar heating device; 240-Condenser; 250-Evaporator. Detailed Implementation

[0018] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] As mentioned in the background section, this application proposes a precast concrete slab curing device for highways, comprising a curing chamber 100 extending along a first direction, including a curing cavity 110 located above ground and a steam cavity 120 located underground; a perforated plate 130 is provided between the curing cavity 110 and the steam cavity 120 for placing the concrete slab and allowing steam to pass through; and an evaporation mechanism 200, comprising a water collection box 201 extending along the first direction and heat dissipation fins 202 extending in an S-shape below the water collection box 201; the number of heat dissipation fins 202 includes a plurality of fins, which are parallel to each other and evenly arranged along the first direction; the heat dissipation fins 202... The system includes an internal regulating chamber 203 for independently controlling the temperature within the curing chamber 100; a water storage device comprising a high-temperature water tank 210 for supplying water to the water collection box 201 and a low-temperature water tank 220 for recovering drainage from the heat sink 202; a passive heating device comprising a solar heating device 230 mounted on top of the curing chamber 100; the output end of the solar heating device 230 is connected to the high-temperature water tank 210, and the input ends are connected to both the high-temperature water tank 210 and the low-temperature water tank 220; and an active heating device comprising a heat pump system connected to both the high-temperature water tank 210 and the regulating chamber 203.

[0021] In this embodiment, the curing chamber 100 extends along a first direction, which can be understood as the length direction of the curing chamber. The interior of the curing chamber 100 is divided into two areas by a perforated plate 130: a curing chamber 110 located above the perforated plate 130 and a steam chamber 120 located below the perforated plate 130. The curing chamber 110 is located above the ground and is used to accommodate the precast cement slabs to be cured; the steam chamber 120 is at least partially located below the ground, which is beneficial for heat preservation. The perforated plate 130 has a large number of pores, which not only stably holds the cement slabs but also allows steam generated below to pass smoothly into the curing chamber.

[0022] In this embodiment, the evaporation mechanism 200 is integrally arranged within the steam chamber 120, and includes a water collection box 201 and multiple heat dissipation fins 202 disposed below the water collection box 201. The water collection box 201 extends along the first direction and is elongated in the shape of a groove, used to receive and distribute high-temperature water to the heat dissipation fins 202. The heat dissipation fins 202 are located below the water collection box 201 and extend in an S-shape, significantly increasing the contact area between water and air. The multiple heat dissipation fins 202 are parallel to each other and evenly arranged along the first direction, and each heat dissipation fin 202 has an independent regulating cavity 203 inside. The regulating cavity 203 is used to independently receive the heating medium. By controlling the temperature of the medium introduced, the surface temperature of the corresponding heat dissipation fin 202 can be independently adjusted, thereby achieving independent control of the temperature inside the curing chamber 100.

[0023] In this embodiment, the water storage device includes a high-temperature water tank 210 and a low-temperature water tank 220. The outlet of the high-temperature water tank 210 is connected to the water collection box 201 via a pipeline, and is used to supply the water collection box 201 with high-temperature water required to generate steam. Water that has not evaporated on the heat sink 202 flows down the fins and is collected and transported to the low-temperature water tank 220 for recycling and storage.

[0024] In this embodiment, the passive heating device includes a solar heating device 230 installed on top of the curing chamber 100. The output end of the solar heating device 230 is connected to the high-temperature water tank 210, and the input ends are connected to both the high-temperature water tank 210 and the low-temperature water tank 220. When there is sufficient sunlight, the solar heating device 230 can first draw water from the high-temperature water tank 210 and quickly heat it to a specified temperature, and then draw water from the low-temperature water tank 220 for heating, thereby maintaining the water temperature in the high-temperature water tank 210 within the set range.

[0025] In this embodiment, the active heating device includes a heat pump system, which is connected to the high-temperature water tank 210 and the regulating chamber 203 respectively. The heat pump system can extract heat from the external environment to assist in heating the water in the high-temperature water tank 210 to compensate for the lack of solar energy; at the same time, the heat pump system can also selectively provide heat to the regulating chamber 203 in each heat sink 202, independently adjusting the temperature of each regulating chamber 203, thereby realizing active and regional control of the temperature field within the curing chamber 100.

[0026] During operation, the hot water in the high-temperature water tank 210 enters the water collection box 201 and is sprayed onto the S-shaped heat sink 202 to form a thin water film, thereby accelerating evaporation; the steam rises in the steam chamber 120 and is evenly diffused into the curing chamber 110 through the perforated plate 130 to perform high-temperature and high-humidity curing on the cement board; the unevaporated water flows back to the low-temperature water tank 220 for recycling.

[0027] In a preferred embodiment, the heat pump system includes a condenser 240 for heat exchange and an evaporator 250 for cooling; the output end of the condenser 240 is connected to the input end of the high-temperature water tank 210 and the regulating chamber 203 respectively, for independent heating or simultaneous heating; the input end of the condenser 240 is connected to the output end of the high-temperature water tank 210 and the regulating chamber 203 respectively, for forming a circulation.

[0028] In this embodiment, the condenser 240 serves as the heat-exchange side of the heat pump system, and its output end (i.e., the hot water supply port) is connected via pipelines to the inlet of the high-temperature water tank 210 and the input end of the regulating chamber 203 within each heat sink 202. Thus, the hot water heated by the condenser 240 can be selectively supplied only to the high-temperature water tank 210 to raise the water temperature, or only to a designated regulating chamber 203 to independently regulate the surface temperature of the corresponding heat sink 202, or simultaneously supplied to both, allowing for flexible switching of heating modes.

[0029] In this embodiment, the input end (i.e., the return water port) of the condenser 240 is connected to the outlet of the high-temperature water tank 210 and the output end of the regulating chamber 203 via pipelines. The cooled water that flows through the high-temperature water tank 210 or the regulating chamber 203 and releases heat flows back to the input end of the condenser 240 from these output ends, is reheated, and continues to circulate, forming a reliable water circulation loop.

[0030] In a preferred embodiment, the output end of the evaporator 250 is connected to the input end of the regulating cavity 203, and the input end is connected to the output end of the regulating cavity 203 to form a circulation; the input end of the regulating cavity 203 is provided with a water tank to maintain water circulation.

[0031] In this embodiment, the output end of the evaporator 250 is connected to the input end of the regulating chamber 203 via a pipeline, and the input end of the evaporator 250 is also connected to the output end of the regulating chamber 203 via a pipeline. Thus, the cooling medium can form a closed-loop circulation path between the evaporator 250 and the regulating chamber 203: the low-temperature medium, after absorbing heat and cooling down in the evaporator 250, flows out from its output end and enters the regulating chamber 203 inside the heat sink 202, absorbing heat from the surrounding environment and the steam chamber 120 through the surface of the heat sink 202; the medium, whose temperature rises after absorbing heat, returns from the output end of the regulating chamber 203 to the input end of the evaporator 250, where it is cooled again, and this cycle repeats continuously.

[0032] In this embodiment, to ensure the continuous and stable operation of the cooling cycle, a water tank is specifically installed at the input end of the regulating chamber 203. This water tank stores a certain amount of circulating medium, playing a dual role of buffering and replenishing water during system operation: on the one hand, it absorbs fluctuations in medium volume caused by temperature changes, maintaining stable pressure within the pipeline; on the other hand, it replenishes water to the circulation loop in a timely manner when the system experiences minor losses of medium due to evaporation or leakage, preventing water shortage from affecting the normal operation of the refrigeration cycle. By setting up a water tank to maintain the continuity of water circulation, the pump body can be effectively prevented from running dry and air from entering the pipeline, improving the reliability of system operation.

[0033] In a preferred embodiment, the input end of the regulating cavity 203 is also connected to the output end of the high-temperature water tank 210, and the output end is also connected to the input end of the low-temperature water tank 220 to form a circulation.

[0034] In this embodiment, the input end of the regulating chamber 203 is connected to the output end of the evaporator 250 via a pipeline, and is also connected to the output end of the high-temperature water tank 210 via a pipeline, thereby receiving high-temperature water from the high-temperature water tank 210. Meanwhile, the output end of the regulating chamber 203 is connected to the input end of the evaporator 250 via a pipeline, and is also connected to the input end of the low-temperature water tank 220 via a pipeline.

[0035] Thus, the regulating chamber 203 has an independent hot water heating circulation capability: when the system needs to increase the surface temperature of a certain heat sink 202 to increase the amount of steam generated, the hot water in the high-temperature water tank 210 can be controlled to enter the input end of the regulating chamber 203 through its output end. During the process of the hot water flowing through the regulating chamber 203, it releases heat outward through the wall of the heat sink 202; the water whose temperature drops after releasing heat flows out from the output end of the regulating chamber 203 and enters the input end of the low-temperature water tank 220, where it is recycled and stored.

[0036] In this way, the regulating chamber 203 simultaneously possesses two independent circulation loops: one is a heating loop where water from the high-temperature water tank 210 flows through the regulating chamber 203, releases heat, and returns to the low-temperature water tank 220; the other is a cooling loop where cold water is supplied from the evaporator 250, absorbs heat through the regulating chamber 203, and returns to the evaporator 250. These two loops can operate independently or in coordination, allowing the temperature of each heat sink 202 to be flexibly adjusted between heating and cooling, thus meeting the different temperature requirements of different maintenance stages. Simultaneously, the water that releases heat in the heating loop is recycled to the low-temperature water tank 220 and reused for subsequent heat pump heating or solar heating, achieving cascade utilization of water resources and waste heat, further reducing system energy consumption.

[0037] In a preferred embodiment, the porous plate 130 is further provided with an array of pressure sensors for detecting the area and weight of the cement board; the plurality of pressure sensors are electrically connected to the control module and configured to upload detection signals; the control module is configured to obtain the area and weight of the cement board based on the received signals, and calculate the volume of the cement board as well as the curing temperature and humidity; the control module is configured to call a database to obtain the curing temperature and humidity based on the area and volume of the cement board.

[0038] In this embodiment, these pressure sensors are arranged with uniform row and column spacing and embedded or attached to the upper surface of the perforated plate 130. After the cement board is hoisted and placed on the perforated plate 130, the bottom of the cement board will come into contact with multiple pressure sensors and apply pressure. Each pressure sensor is electrically connected to the control module and can convert the pressure value detected by each sensor into an electrical signal and upload it to the control module in real time.

[0039] In this embodiment, after receiving the multi-channel detection signals uploaded by all pressure sensors, the control module is configured to complete the following processing steps: First, the control module determines the actual coverage area of ​​the cement board on the porous plate 130 based on the distribution and number of pressure sensors that have been triggered and detected valid pressure values. Then, it calculates the area of ​​this coverage area to obtain the area parameter of the cement board. Simultaneously, the control module sums the pressure values ​​from all valid pressure sensors to obtain the weight parameter of the cement board.

[0040] Secondly, the control module is configured to automatically calculate the volume of the cement slab based on its area and weight, combined with a preset cement substrate density. Since the temperature and humidity settings during curing are closely related to the size and specifications of the cement slab, the control module is further configured to retrieve a pre-stored curing process parameter table from the database based on the area and volume data of the cement slab. The database establishes a mapping relationship between cement slabs of different areas and volumes and their optimal curing temperatures and humidity levels. The control module uses this query matching to accurately obtain the target curing temperature and humidity suitable for the current batch of cement slabs.

[0041] Through the coordinated operation of the aforementioned pressure sensor array and control module, the system can automatically identify the specific dimensions and weight specifications of each batch of cement boards before the curing process begins. Without the need for manual measurement and input, it can intelligently determine the corresponding curing process parameters, thereby achieving differentiated and precise curing of cement boards of different specifications.

[0042] In a preferred embodiment, the maintenance chamber 110 is further provided with a temperature sensor and a humidity sensor; the temperature sensor and the humidity sensor are electrically connected to the control module and configured to upload detection signals; the control module is configured to control the temperature of the regulating chamber 203 and the input amount of the water collection box 201 by comparing the acquired temperature with the detected temperature and the acquired humidity with the detected humidity.

[0043] In this embodiment, a temperature sensor is positioned at an appropriate location within the curing chamber 110, such as on the side wall or top, to detect the actual air temperature inside the curing chamber 110 in real time. Similarly, a humidity sensor is positioned within the curing chamber 110 to detect the actual air humidity inside the curing chamber 110 in real time. Both the temperature and humidity sensors are electrically connected to the control module via signal lines, and each is configured to continuously upload the collected real-time temperature and humidity signals to the control module, providing a basis for subsequent precise control.

[0044] In this embodiment, after receiving detection signals from the temperature sensor and humidity sensor, the control module executes the following control logic: First, the control module reads the target temperature and target humidity for the cement slab curing, obtained from the pressure sensor array. Then, the control module compares the real-time detected temperature with the target temperature and calculates the temperature difference; simultaneously, it compares the real-time detected humidity with the target humidity and calculates the humidity difference.

[0045] Based on the magnitude and sign of the temperature difference, the control module generates corresponding temperature control commands to adjust the temperature of the regulating cavity 203 inside each heat sink 202. Specifically, when the detected temperature is lower than the target temperature, the control module can increase the temperature or flow rate of the heating medium flowing into the regulating cavity 203, thereby raising the surface temperature of the heat sink 202 and increasing the temperature inside the curing cavity 110; conversely, when the detected temperature is higher than the target temperature, the supply of heating medium is reduced or the cooling medium is switched to lower the surface temperature of the heat sink 202, thereby stabilizing the temperature inside the curing cavity 110.

[0046] Based on the magnitude and sign of the humidity difference, the control module generates corresponding humidity control commands to adjust the input to the water collection box 201. For example, when the detected humidity is lower than the target humidity, the control module increases the water supply from the high-temperature water tank 210 to the water collection box 201, allowing more hot water to be sprayed onto the heat sink 202, increasing steam production, and thus raising the humidity in the curing chamber 110; when the detected humidity is too high, the water supply is reduced accordingly to decrease steam production and bring the humidity back to the target range.

[0047] By comparing the detected values ​​with the target values ​​in real time and controlling the temperature of the regulating chamber 203 and the input of the water collection box 201 respectively, the system can dynamically compensate for temperature and humidity fluctuations caused by external disturbances, maintain the stability and uniformity of the temperature and humidity fields in the curing chamber 110, and achieve precise closed-loop control of the curing process.

[0048] In a preferred embodiment, the number of water collection boxes 201 includes a plurality of boxes, which are evenly arranged in the steam chamber 120; the bottom of the water collection box 201 is provided with a plurality of drainage holes corresponding to the heat sink 202, for synchronously transporting high-temperature water to the heat sink 202; the plurality of drainage holes are evenly arranged along the first direction at the bottom of the water collection box 201.

[0049] In this embodiment, there are multiple water collection boxes 201. These water collection boxes 201 are evenly spaced along the width direction of the curing chamber 100 in the internal space of the steam chamber 120 to cover the entire transverse cross section of the steam chamber 120, so that each water collection box 201 supplies water independently to a set of heat sinks 202 below.

[0050] In this embodiment, each water collection box 201 has multiple rows of drainage holes at its bottom corresponding to the S-shaped heat sink 202 extending below it. These drainage holes are arranged in a straight line along the bottom wall of the water collection box 201, and their arrangement direction is consistent with the first direction of the maintenance chamber 100, that is, they are evenly distributed along the length of the water collection box 201. The diameter and spacing of the drainage holes are set according to the surface contour of the heat sink 202 and the required water distribution uniformity, so that high-temperature water can be synchronously and dispersedly transported to each section of the heat sink 202 along its entire extension length.

[0051] When high-temperature water flows through the water collection box 201 and falls through the evenly distributed drainage holes at the bottom, each heat sink 202 receives uniform water flow distribution across its entire S-shaped surface. Compared to single-point or centralized water supply methods, this multi-point, linear, synchronous water supply design effectively avoids localized over-wetting or dryness of the heat sink 202 due to uneven water flow distribution, resulting in a more uniform and stable water film formation on the surface of the heat sink 202. Consequently, the evaporation area of ​​each heat sink 202 is fully utilized, resulting in a higher evaporation rate and a more uniform amount of steam diffused into the curing chamber 110, which helps maintain consistent temperature and humidity conditions throughout the curing chamber 100.

[0052] In this embodiment, the arrangement of multiple water collection boxes 201 and their corresponding heat sinks 202 also enables the device to be divided into different functional groups for collaborative operation at the control level.

[0053] Specifically, the multiple water collection boxes 201 and their underlying heat sinks 202 within the curing chamber 100 naturally form multiple relatively independent steam generating units. Based on the real-time temperature and humidity control requirements within the curing chamber 110, the control module can divide these units into two or more groups for differentiated use. At least one group is configured as a steam supply group, where the water collection boxes 201 normally receive hot water from the high-temperature water tank 210 and continuously spray it onto the heat sinks 202. The heat sinks 202 primarily generate steam, providing ample humidity to the curing chamber 110. Simultaneously, at least another group is configured as a temperature regulation group. The control module can temporarily cut off or significantly reduce the water supply to the water collection boxes 201 in this group, causing the heat sinks 202 to generate little or no steam. Instead, by independently regulating the temperature of its internal regulating chamber 203, the heat sink 202 is used as a dry heat exchanger, regulating the air temperature within the curing chamber 110 through radiation and natural convection. The two sets of functional units are arranged in an alternating or partitioned manner in space, which can realize the parallel and independent execution of humidity replenishment and temperature regulation in the curing chamber 110. This avoids the coupling problem in the traditional solution where adjusting the temperature inevitably affects the humidity, or adjusting the humidity interferes with the temperature, making the temperature and humidity control of the curing environment more flexible and precise.

[0054] In a preferred embodiment, a return water tank is provided at the bottom of the steam chamber 120 corresponding to the heat sink 202; a filter device is provided at the output end of the return water tank for filtering the recycled water; and multiple return water tanks are respectively connected to a sedimentation tank for settling the recycled water.

[0055] In this embodiment, during the S-shaped extension of each heat sink 202, the high-temperature water that has not evaporated on its surface flows down the sink body and converges at the bottom edge of the heat sink 202. On the bottom surface of the steam chamber 120, a water return groove is provided directly below each heat sink 202. The water return groove is arranged along the extension direction of the heat sink 202, and its groove width is greater than the projected width of the heat sink 202, which can completely catch all the water falling from both sides of the heat sink 202.

[0056] In this embodiment, a filtration device is installed at the output end of each return water tank, i.e., at the water collection outlet of the return water tank. This filtration device is used to filter the collected recycled water, effectively removing particulate impurities, cement dust, and other suspended solids generated during the steam curing process that may be mixed into the water. The filtration device can be a stainless steel filter screen, a porous filter plate, or a detachable filter cartridge, etc., to ensure that the filtered water quality meets the requirements for recycling and reuse, while preventing blockages in subsequent pipelines and equipment.

[0057] In this embodiment, the outputs of multiple return water tanks are connected to a settling tank via pipelines. After preliminary filtration by the filtration device, the recycled water is guided to the settling tank, where it obtains sufficient static residence time, allowing denser fine impurities in the water to settle and separate further by gravity, thereby obtaining cleaner recycled water.

[0058] In a preferred embodiment, the sedimentation tank is provided with a main baffle and an auxiliary baffle; the main baffle extends perpendicularly to the first direction and is used to divide the interior of the sedimentation tank into a recovery chamber and a sedimentation chamber; the auxiliary baffles are multiple and extend parallel to the first direction, and are used to divide the sedimentation chamber into multiple independent chambers.

[0059] In this embodiment, a main baffle is vertically installed inside the sedimentation tank, and the extension direction of the main baffle is perpendicular to the first direction of the curing chamber 100. The main baffle extends upward from the bottom of the sedimentation tank to a certain height, but its top is lower than the top edge of the sedimentation tank or has a water passage opening, thereby dividing the internal space of the sedimentation tank into two areas along the water flow direction: a recovery chamber located on the inlet side and a sedimentation chamber located on the outlet side. The recovery chamber is used to receive the recovered water from each return water tank after preliminary filtration, where the water flow is buffered and homogenized; when the water level in the recovery chamber exceeds the top of the main baffle or the water passage opening, the clearer water in the upper layer overflows into the subsequent sedimentation chamber.

[0060] In this embodiment, the extension direction of multiple auxiliary baffles is parallel to the first direction of the curing chamber 100, dividing the sedimentation chamber laterally into a first chamber, a second chamber, and even more sequentially adjacent and mutually isolated independent chambers. Each independent chamber has a separate water inlet on its side wall, and each inlet is equipped with an independently operable switch valve. These switch valves are electrically connected to the control module and configured to connect or disconnect the water flow channel between the recovery chamber and the corresponding chamber according to control commands.

[0061] During operation, the control module controls the opening and closing of each switching valve according to a preset timing logic. First, the control module opens the switching valve corresponding to the first chamber, while keeping all other switching valves in the closed state. The recovered water in the recovery chamber overflows into the first chamber through the opened inlet, causing the liquid level in the first chamber to gradually rise. During this stage, the second chamber and all subsequent chambers are completely shut off due to the closed switching valves, and their internal water is unaffected by any inflow disturbance.

[0062] Once the liquid level in the first chamber reaches the preset designated position, the control module closes the corresponding valve for the first chamber and simultaneously opens the valve for the second chamber. At this point, the water inlet channel of the first chamber is completely cut off, and the water in that chamber enters a completely static state. Suspended solids in the water undergo thorough and efficient static sedimentation due to gravity under ideal conditions without any hydraulic disturbance. Simultaneously, the recycled water from the recovery chamber overflows into the second chamber, causing the liquid level in the second chamber to rise.

[0063] Following this logic, subsequent chambers proceed sequentially according to the same timeline: when the liquid level in a chamber receiving water reaches a designated position, its corresponding valve closes, and the chamber enters the static sedimentation stage; simultaneously, the valve of the next chamber opens, and it begins to receive the overflow of recycled water. Meanwhile, after the designated sedimentation time in the preceding chamber, the supernatant is pumped to the cryogenic water tank 220.

[0064] Through the aforementioned phased, time-based, and sequential valve control method, the sedimentation tank achieves alternating parallel operation of water intake and sedimentation in multiple chambers. At any given time, only one chamber is in the water intake state, while the remaining chambers are in a static sedimentation state, allowing each chamber to complete the sedimentation and separation of suspended solids under completely still water conditions. This design greatly improves sedimentation efficiency and effluent quality, while the zoned sedimentation in each chamber also facilitates separate sludge removal and cleaning maintenance.

[0065] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A road precast cement slab curing equipment, characterized in that, include: A curing chamber (100) extends along a first direction and includes a curing cavity (110) located on the ground and a steam cavity (120) located underground. A perforated plate (130) is provided between the curing chamber (110) and the steam chamber (120) for placing cement slabs and allowing steam to pass through; Evaporation mechanism (200) includes a water collection box (201) extending along the first direction and a heat sink (202) extending in an S-shape below the water collection box (201). The number of heat sinks (202) includes multiple ones, which are parallel to each other and evenly arranged along the first direction; The heat sink (202) has an internal regulating cavity (203) for independently controlling the temperature inside the maintenance chamber (100); A water storage device, the water storage device comprising a high-temperature water tank (210) for supplying water to the water collection box (201) and a low-temperature water tank (220) for recovering the drainage of the heat sink (202). A passive heating device, the passive heating device including a solar heating device (230) disposed on the top of the curing chamber (100). The output end of the solar heating device (230) is connected to the high-temperature water tank (210), and the input end is connected to the high-temperature water tank (210) and the low-temperature water tank (220) respectively. An active heating device, comprising a heat pump system, is connected to the high-temperature water tank (210) and the regulating chamber (203) respectively.

2. The highway precast cement slab curing equipment according to claim 1, characterized in that, The heat pump system includes a condenser (240) for heat exchange and an evaporator (250) for refrigeration. The output end of the condenser (240) is connected to the input end of the high-temperature water tank (210) and the regulating chamber (203) respectively, for independent heating or simultaneous heating; The input end of the condenser (240) is connected to the output end of the high-temperature water tank (210) and the regulating chamber (203) respectively to form a circulation.

3. The highway precast cement slab curing equipment according to claim 2, characterized in that, The output end of the evaporator (250) is connected to the input end of the regulating cavity (203), and the input end is connected to the output end of the regulating cavity (203) to form a circulation; The input end of the regulating chamber (203) is equipped with a water storage tank to maintain water circulation.

4. The highway precast cement slab curing equipment according to claim 3, characterized in that, The input end of the regulating chamber (203) is also connected to the output end of the high-temperature water tank (210), and the output end is also connected to the input end of the low-temperature water tank (220) to form a circulation.

5. The highway precast cement slab curing equipment according to claim 1, characterized in that, The porous plate (130) is also provided with an array of pressure sensors for detecting the area and weight of the cement board; The pressure sensors are electrically connected to the control module and configured to upload detection signals. The control module is configured to obtain the area and weight of the cement board based on the received signal, and to calculate the volume of the cement board as well as the curing temperature and humidity. The control module is configured to call the database to obtain the curing temperature and humidity based on the area and volume of the cement board.

6. The highway precast cement slab curing equipment according to claim 5, characterized in that, The curing chamber (110) is also equipped with a temperature sensor and a humidity sensor; The temperature sensor and humidity sensor are electrically connected to the control module and configured to upload detection signals. The control module is configured to control the temperature of the regulating cavity (203) and the input amount of the water collection box (201) by comparing the acquired temperature with the detected temperature and the acquired humidity with the detected humidity.

7. The highway precast cement slab curing equipment according to claim 1, characterized in that, The number of water collection boxes (201) includes multiple boxes, which are evenly arranged in the steam chamber (120); The bottom of the water collection box (201) is provided with multiple drainage holes corresponding to the heat sink (202) for synchronously transporting high-temperature water to the heat sink (202); The plurality of drainage holes are evenly arranged along the first direction at the bottom of the water collection box (201).

8. The highway precast cement slab curing equipment according to claim 7, characterized in that, The bottom of the steam chamber (120) is provided with a water return groove corresponding to the heat sink (202); The output end of the return water tank is equipped with a filter device for filtering the recycled water; Multiple return water tanks are connected to sedimentation tanks for settling the recycled water.

9. The highway precast cement slab curing equipment according to claim 8, characterized in that, The sedimentation tank is equipped with a main baffle and an auxiliary baffle. The main baffle extends perpendicularly to the first direction and is used to divide the interior of the sedimentation tank into a recovery chamber and a sedimentation chamber. The auxiliary baffles include multiple baffles and extend in a direction parallel to the first direction, for dividing the sedimentation chamber into multiple independent chambers.

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