A water supply system with circulating water temperature regulation, a concrete mixing station and a temperature control method

Abstract

The present invention discloses a water supply system with temperature regulation of a circulating water circuit, which includes a main circulating water circuit, a first circulating water circuit, and a second circulating water circuit; the circulating water flow of the main circulating water circuit flows from a water tank to a boiler device for heating through a circulating pump, and after the temperature is reduced through multi-stage heat exchange, it is judged by a temperature control valve, and qualified warm water is sent to a mixing main unit, and unqualified warm water is mixed and tested again for water temperature, and then returned to the water tank through a three-way control valve M8; the first circulating water circuit is connected to an open cooling tower to perform preliminary cooling on the main circulating water circuit; the second circulating water circuit is connected to a closed cooling tower to perform precision cooling on the main circulating water circuit, and the temperature is controlled to reach the temperature required for mixing. The system of the present invention is provided with multiple groups of outlet pipes and temperature control valves at the output end of the circulating water circuit to control the qualified water flow to enter the mixing main unit, otherwise it flows back to the water tank for recirculation, so that the temperature of the water entering the mixing main unit always meets the requirements, thereby providing a guarantee for improving the quality of concrete.

Description

Technical Field

[0001] The present invention belongs to the field of concrete, and more specifically, relates to a water supply system for circulating water temperature regulation used in concrete production, and relates to a temperature control method for concrete production in a mixing station. Background Art

[0002] The circulating water supply system is a crucial component of a concrete mixing plant. It is primarily responsible for recycling and reusing water within the plant, and controls water temperature through the addition of various heating and cooling devices. The water supply system precisely controls water temperature, ensuring that concrete is mixed and cured at the optimal temperature, thereby guaranteeing concrete quality. An efficient temperature-controlled water supply system can quickly provide water at the required temperature, which helps improve the plant's production efficiency. An inefficient water supply system can cause production delays and impact the overall project schedule. An efficient temperature-controlled water supply system can quickly provide water at the required temperature, helping to improve the plant's production efficiency.

[0003] However, there are some problems with the existing technology: the water temperature for concrete mixing should be controlled between 15°-25°. Due to the large temperature deviation between summer and winter, the water temperature is difficult to control, affecting the concrete curing and final strength. Therefore, we propose a water supply system with circulating water temperature regulation, a concrete mixing station and a temperature control method. Summary of the Invention

[0004] In response to the problems existing in the prior art, the purpose of the present invention is to provide a water supply system with circulating water temperature regulation, a concrete mixing station and a temperature control method. By setting multiple sets of outlet pipes and temperature control valves at the output end of the circulating water, the water that meets the standards is controlled to flow into the mixing main unit, and then flow back to the water tank for recirculation, so that the water temperature entering the mixing main unit always meets the requirements.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention first provides a water supply system with a circulating water circuit temperature adjustment, the system comprising a main circulating water circuit, a first circulating water circuit and a second circulating water circuit;

[0007] The total circulation water circuit includes: a water tank, a boiler device, a first heat exchanger, a third heat exchanger, an output end, a heat exchange chamber and a turbulent flow component; the water tank, the boiler device, the first heat exchanger, the heat exchange chamber, the third heat exchanger, the output end and the turbulent flow component in the total circulation water circuit are connected in sequence, the output end is provided with multiple groups of outlet pipes for draining the mixing host of the concrete mixing station, the output end of the turbulent flow component is connected to a temperature detection T5 and a three-way control valve M8, the two ends of the three-way control valve M8 are respectively connected in series with the water tank and the output end; the heat exchange chamber includes a high-temperature pipe and a low-temperature pipe, the high-temperature pipe is located between the first heat exchanger and the second heat exchanger, and the low-temperature pipe is connected in parallel with the two-way control valve; the outer side of the high-temperature pipe is sleeved with There are multiple heat sinks, which are evenly distributed. Heat conducting sheets are sleeved in the intervals of the heat sinks. The outer side of the low-temperature tube is sleeved with a calcium chloride heat absorbing sleeve. The outer side of the calcium chloride heat absorbing sleeve is covered with an insulation sleeve. The heat conducting sheet passes through the insulation sleeve and the calcium chloride heat absorbing sleeve and contacts the low-temperature tube; the turbulence component includes a return pipe and a mixed temperature water tank, the return pipe is fixedly connected to the mixed temperature water tank, and there are multiple return pipes; the return pipe includes a water inlet pipe and a turbulence pipe, the water inlet pipe is fixedly connected to the turbulence pipe, a buffer chamber is formed at the connection between the water inlet pipe and the turbulence pipe, the inner wall of the turbulence pipe is provided with turbulence blades, and a guide plate is provided on the turbulence pipe, and the guide plate is fixedly connected to the mixed temperature water tank;

[0008] The circulating water in the total circulating water circuit flows from the water tank to the boiler device through the circulating pump for heating. After the temperature is reduced through multi-stage heat exchange, it is judged by the temperature control valve. The qualified warm water is sent to the mixing host. The unqualified warm water is mixed and the water temperature is tested again and returned to the water tank through the three-way control valve M8.

[0009] The first circulating water circuit is connected to an open cooling tower to perform preliminary cooling of the total circulating water circuit, and is connected to the second circulating water circuit through a heat exchanger for heat exchange treatment;

[0010] The second circulating water circuit is connected to a closed cooling tower to precisely cool the total circulating water circuit, and the temperature of the circulating water circuit is detected to control the temperature to reach the temperature required for stirring.

[0011] Optionally, a temperature detector T2 and a three-way control valve M5 are provided on the water outlet pipe at the output end, and the other two ends of the three-way control valve M5 are respectively connected to the return pipe and the mixing host, and the water outlet pipes are provided in multiple groups;

[0012] The output end of the temperature-mixing water tank is provided with a temperature detector T5 and is connected to a three-way control valve M8, wherein the two ends of the three-way control valve M8 are connected to the temperature-mixing water tank and the water tank respectively;

[0013] The other end of the three-way control valve M8 is connected to the output end and is connected in parallel with the low-temperature tube and the two-way control valve M1.

[0014] Optionally, the first circulating water circuit includes a first heat exchanger, an open cooling tower, and a second heat exchanger;

[0015] The first heat exchanger, the open cooling tower and the second heat exchanger are connected in sequence, the output end of the second heat exchanger is provided with a temperature detector T6, and the first circulating water path is provided with a two-way control valve M2;

[0016] The circulating water in the first circulating water circuit flows out from the first heat exchanger, flows through the open cooling tower, exchanges heat with the second circulating water circuit through the second heat exchanger after being cooled, and then returns to the first heat exchanger after being detected by the temperature detector T6.

[0017] Optionally, the second circulating water circuit includes a third heat exchanger, a second heat exchanger, a closed cooling tower and a heater;

[0018] The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in sequence. A two-way control valve M4 is connected in parallel to the heating machine. The heating machine is connected in parallel between the closed cooling tower and the third heat exchanger. Temperature detectors T7 and T8 are respectively provided at both ends of the closed cooling tower, and a three-way control valve M9 is connected in parallel. The three-way control valve M9 is connected to the input end of the third heat exchanger. Two-way control valves M3 are connected in parallel to both ends of the third heat exchanger.

[0019] The circulating water in the second circulating water circuit flows out from the third heat exchanger, flows through the second heat exchanger to exchange heat with the first circulating water circuit, and then flows into the closed cooling tower for precision cooling. After being detected by the temperature detector T8, it flows into the third heat exchanger. When the temperature is lower than the temperature required for stirring, it can be heated by the heater.

[0020] A concrete mixing station adopts the above-mentioned circulating water temperature-regulated water supply system, comprising a mixing main unit, a batching system, a water supply system, a control system, a storage system, and a conveying system;

[0021] The mixing host is used to mix various raw materials into concrete;

[0022] The batching system is used to weigh the raw materials, additives and admixtures according to the predetermined proportions and feed them into the mixing main unit;

[0023] The water supply system is provided with a circulating water circuit temperature control to ensure that the water temperature in the circulating water circuit remains consistent, and the water temperature in the mixed concrete is 15°-25°;

[0024] The control system is equipped with an automated control system that can accurately control the ingredients, water supply system and mixing process to ensure the quality of the concrete;

[0025] The storage system is used to store raw materials, semi-finished products, finished products and other materials to ensure material safety, improve efficiency and reduce waste, and support the smooth operation of the entire supply chain;

[0026] The conveying system is used to transport raw materials, semi-finished products and finished products from the warehouse to the batching system.

[0027] A temperature control method, based on the above-mentioned circulating water circuit temperature-adjusted water supply system, comprising:

[0028] S1, in the total circulating water circuit, water flows from the water tank to the boiler device for heating, and when the water temperature reaches 90°, the water is discharged, and the temperature and pressure are measured, and then flows through the first circulating water circuit;

[0029] S2: In the first circulating water circuit, the predetermined temperature is reduced to 65°-75°C. The first heat exchanger is connected in series with the open cooling tower, and the circulating water flows into the open cooling tower for cooling. After the circulating water flows out of the open cooling tower, it is detected by the temperature detector T6. If the temperature is higher than 80°C, the two-way control valve M2 is opened and the water flows into the open cooling tower for cooling again. If the water temperature is lower than 75°C, it flows back to the main circulating water circuit, enters the high-temperature pipe, and then flows through the second circulating water circuit.

[0030] S3: In the second circulating water circuit, the predetermined temperature is reduced to 30°-40°. The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in series. Water flows into the second heat exchanger to exchange heat with the first circulating water flow. The temperature is detected by the temperature monitor T7. If the temperature is higher than 40°, the two-way control valve M3 is closed, and the water flows into the closed cooling tower for precision cooling. After the water flows out of the closed cooling tower, it passes through multiple stages of detection and flows into the main circulating water circuit.

[0031] S4. In the total circulating water circuit, the circulating water flows into each outlet pipe at the output end. After the temperature is determined by the temperature detector on the outlet pipe, if the water temperature of the outlet pipe is 15°-25°, the three-way control valve is opened to connect the mixing host for drainage. If the temperature is higher than 25°, the three-way control valve is opened to connect the turbulence component for mixing and reflux, and then returned to the water tank.

[0032] Optionally, in step S3, after the water flows out of the closed cooling tower, it is detected by the temperature detector T8.

[0033] 1) When the temperature is higher than 40°, open the two-way control valve M4, open the three-way control valve M9 to connect the second heat exchanger, and then lead to the closed cooling tower for further cooling;

[0034] 2) When the temperature is between 30° and 40°, open the two-way control valve M4 and the three-way control valve M9 to connect the third heat exchanger and flow into the main circulating water circuit;

[0035] 3) When the temperature is lower than 30°, close the two-way control valve M4, start the heater to heat the water temperature to 30°-40°, and after detection by the temperature detector T9, open the three-way control valve M9 to connect the third heat exchanger and flow into the main circulating water circuit.

[0036] Optionally, in step S4, the circulating water flows into the turbulent flow component, first enters the turbulent flow pipe through the return pipe for pre-mixing, flows into the mixed temperature water tank for static heat exchange, and when the mixed temperature water tank reaches half the tank mark, the water is drained, and after the mixed temperature test is performed, the water returns to the water tank and refluxes for heat exchange;

[0037] Mixed temperature detection: The mixed temperature water flows through the temperature detector T5 to detect the water temperature. If the temperature is lower than 10°, the three-way control valve M8 is opened to connect to the water tank, and the water flows back to the water tank and recirculates. Otherwise, heat exchange reflux is performed.

[0038] The heat exchange reflux: the mixed temperature water flows through the temperature detector T5 to detect the water temperature,

[0039] 1) When the water temperature is higher than 25°C and lower than 30°C, open the three-way control valve M8 and the two-way control valve M1, connect the output end, perform temperature detection and participate in drainage;

[0040] 2) When the water temperature is higher than 10° and lower than 15°, open the three-way control valve M8 and close the two-way control valve M1. The mixed temperature water flows through the low-temperature pipe and the high-temperature pipe through the heat conduction plate for heat exchange and temperature rise, then enters the output end to detect the water temperature again and participate in drainage.

[0041] Technical effects and advantages of the present invention:

[0042] 1. The present invention sets multi-stage heating and cooling temperature adjustment points on the circulating water circuit, and sets multiple sets of drainage pipes at the output end to simultaneously participate in drainage and circular hydrological detection. The water temperature is measured before the water is discharged. The water pipes with substandard water temperature are not used for drainage and flow back to the main water circulation circuit for temperature adjustment. This not only ensures accurate water temperature, but also saves energy by absorbing and utilizing residual heat through repeated circulation and temperature adjustment.

[0043] 2. The present invention arranges high-temperature pipes, low-temperature pipes and a heat exchange structure on the total circulating water channel. Heat sinks and heat conducting plates are arranged on the outside of the high-temperature pipes to increase the heat dissipation of the high-temperature pipes. The low-temperature pipes are connected to provide a heat source for the low-temperature pipes. The heat dissipation of the high-temperature pipes is used to heat the low-temperature pipes, thereby improving energy utilization and saving resources.

[0044] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a diagram of the water supply system architecture provided by the present invention;

[0046] Figure 2 is a flow chart of a water supply system provided by an embodiment of the present invention;

[0047] Figure 3 Schematic diagram of the heat exchange structure provided by an embodiment of the present invention;

[0048] Figure 4 is a schematic diagram of a turbulent flow component provided by an embodiment of the present invention;

[0049] Figure 5 is a schematic cross-sectional view of a return pipe provided by an embodiment of the present invention;

[0050] Figure 6 It is an algorithm diagram of the temperature control method provided by an embodiment of the present invention.

[0051] In the figure: 1. High-temperature tube; 11. Heat sink; 12. Heat conducting plate; 2. Low-temperature tube; 21. Calcium chloride heat absorbing sleeve; 22. Insulation sleeve; 3. Return pipe; 31. Water inlet pipe; 32. Buffer chamber; 33. Turbulence pipe; 34. Turbulence blade; 35. Guide plate; 4. Mixed temperature water tank. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0053] Example 1

[0054] like Figure 1 and Figure 2 As shown, this embodiment provides a water supply system with a circulating water circuit temperature adjustment, which comprises a main circulating water circuit, a first circulating water circuit, and a second circulating water circuit;

[0055] The circulating water in the above-mentioned total circulating water circuit flows from the water tank to the boiler device through the circulating pump for heating. After the temperature is reduced through multi-stage heat exchange, it is judged by the temperature control valve. The qualified warm water is sent to the mixing host. The unqualified warm water is mixed and the water temperature is tested again before returning to the water tank through the three-way control valve M8;

[0056] The first circulating water circuit is connected to an open cooling tower to initially cool the total circulating water circuit, and is connected to the second circulating water circuit through a heat exchanger for heat exchange treatment;

[0057] The second circulating water circuit is connected to a closed cooling tower to precisely cool the total circulating water circuit, and the temperature of the circulating water circuit is tested to control the temperature to reach the temperature required for stirring.

[0058] Furthermore, the total circulating water circuit includes: hot water supply, multiple heat exchange and cooling, water supply and return to the mixing host. The water circulates in the total circulating water circuit. After the water in the water tank is heated by the boiler device, the temperature is too high and cannot be used directly for concrete mixing. Therefore, the hot water needs to be cooled. Since heat will be lost when the water flows in the pipe, the temperature of the water should be higher than 25° during the last cooling. It should be noted that the suitable temperature for concrete mixing is 15°-25°. Then the water flows through the output end, and the temperature control determines whether the water flow is qualified and can be discharged. If it is unqualified, it will return to the water tank and be reheated.

[0059] like Figure 3 As shown, the main circulation water circuit includes: a water tank, a boiler unit, a first heat exchanger, a third heat exchanger, an output end, a heat exchange chamber, and a turbulence assembly. In the main circulation water circuit, the water tank, boiler unit, first heat exchanger, heat exchange chamber, third heat exchanger, output end, and turbulence assembly are connected in sequence. The output end is equipped with multiple sets of outlet pipes for draining the main mixer in the concrete mixing plant. The output end of the turbulence assembly is connected to a temperature detector T5 and a three-way control valve M8. The two ends of the three-way control valve M8 are connected in series to the water tank and the output end, respectively. The outlet pipe at the output end is equipped with a temperature detector T2 and a three-way control valve M5. The other two ends of the three-way control valve M5 are connected to the return pipe and the main mixer, respectively. Multiple sets of outlet pipes are provided.

[0060] The output end of the mixed temperature water tank is equipped with a temperature detector T5 and is connected to a three-way control valve M8. One end of the three-way control valve M8 is connected to the mixed temperature water tank and the water tank respectively. The other end of the three-way control valve M8 is connected to the output end and is connected in parallel with the low-temperature pipe and the two-way control valve M1.

[0061] Furthermore, multiple sets of outlet pipes are provided at the output end. When the water flows through the output end, a certain amount of temperature loss has occurred. Due to seasonal climate reasons, the degree of water temperature loss is difficult to control. Therefore, multiple sets of outlet pipes are provided. When the water flows through the output end, it will flow through each outlet in turn, and the temperature detector on each outlet will detect the water temperature. Only the outlet pipes that meet the water temperature will participate in drainage. The water pipes with higher or lower temperatures will flow through the return pipe to the buffer tank. The turbulent blades inside the return pipe will cause the water in the inflow pipe to form turbulence, so that multiple streams of water with different temperatures are initially mixed and heat exchanged. The basic temperature is mixed when passing through the mixing water tank, and then the temperature is determined again. If the temperature of the mixed water is close to 15°-25°, the water flow is directed to the output end through the three-way control valve. When the water temperature is slightly higher than 15°-25°, the two-way control valve is opened and the water flows directly into the output end; when the water temperature is slightly lower than 15°-25°, the two-way control valve is closed and the water flows into the low-temperature pipe.

[0062] like Figure 4and Figure 5 As shown, the turbulent flow component includes a return pipe 3 and a temperature-mixing water tank 4. The return pipe 3 is fixedly connected to the temperature-mixing water tank 4, and there are multiple return pipes 3.

[0063] The above-mentioned return pipe 3 includes an inlet pipe 31 and a turbulence pipe 33. The inlet pipe 31 is fixedly connected to the turbulence pipe 33. A buffer chamber 32 is formed at the connection between the inlet pipe 31 and the turbulence pipe 33. Turbulence blades 34 are provided on the inner wall of the turbulence pipe 33. A guide plate 35 is provided on the turbulence pipe 33. The guide plate 35 is fixedly connected to the mixed temperature water tank 4.

[0064] Furthermore, multiple return water flows enter through the water inlet pipe 31, and enter the turbulence tube 33 after contacting in the buffer chamber 32. The buffer chamber 32 can play a good buffering role and reduce the pressure of the pipeline. The turbulence blades 34 inside the turbulence tube 33 can cause the water flow to be turbulent, so that the multiple water flows are mixed and the heat exchange speed is accelerated.

[0065] Specifically, the heat exchange chamber includes a high-temperature tube 1 and a low-temperature tube 2. The high-temperature tube 1 is located between the first heat exchanger and the second heat exchanger, and the low-temperature tube 2 is connected in parallel with a two-way control valve. The outside of the high-temperature tube 1 is sheathed with a plurality of evenly distributed heat sinks 11. The heat sinks 11 are spaced apart with heat conducting fins 12. The outside of the low-temperature tube 2 is sheathed with a calcium chloride heat absorbing sleeve 21. The outside of the calcium chloride heat absorbing sleeve 21 is covered with an insulation sleeve 22. The heat conducting fins 12 pass through the insulation sleeve 22 and the calcium chloride heat absorbing sleeve 21 and then contact the low-temperature tube 2. Furthermore, the heat sinks 11 and heat conducting fins 12 provided on the outside of the high-temperature tube 1 are used to increase the heat dissipation of the high-temperature tube 1 and are connected to the low-temperature tube 2 to provide a heat source for the low-temperature tube 2. The heat dissipation of the high-temperature tube 1 is used to heat the low-temperature tube 2, thereby improving energy utilization and saving resources.

[0066] Specifically, the first circulating water circuit includes a first heat exchanger, an open cooling tower and a second heat exchanger, wherein:

[0067] The first heat exchanger, the open cooling tower and the second heat exchanger are connected in sequence. The output end of the second heat exchanger is provided with a temperature detector T6, and the first circulating water path is provided with a two-way control valve M2;

[0068] The circulating water in the first circulating water circuit flows out from the first heat exchanger, flows through the open cooling tower, and after cooling, exchanges heat with the second circulating water circuit through the second heat exchanger, and then returns to the first heat exchanger after being detected by the temperature detector T6.

[0069] Furthermore, since the cooling effect of an open cooling tower is affected by many factors, such as ambient temperature, humidity, proximity, cooling tower design and maintenance, an open cooling tower can only cool hot water to a temperature close to the wet bulb temperature, which is the lowest temperature that can be reached by water evaporation in the current environment. Therefore, an open cooling tower is used to perform preliminary cooling treatment on the circulating water flow.

[0070] Specifically, the second circulating water circuit includes a third heat exchanger, a second heat exchanger, a closed cooling tower and a heater;

[0071] The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in sequence. A two-way control valve M4 is connected in parallel to the heater. The heater is connected in parallel between the closed cooling tower and the third heat exchanger. Temperature detectors T7 and T8 are respectively provided at both ends of the closed cooling tower, and a three-way control valve M9 is connected in parallel. The three-way control valve M9 is connected to the input end of the third heat exchanger. Two-way control valves M3 are connected in parallel to both ends of the third heat exchanger.

[0072] The circulating water in the second circulating water circuit flows out from the third heat exchanger, flows through the second heat exchanger to exchange heat with the first circulating water circuit, and then flows into the closed cooling tower for precision cooling. After being detected by the temperature detector T8, it flows into the third heat exchanger. When the temperature is lower than the temperature required for stirring, it can be heated by the heater.

[0073] Furthermore, since the final flow into the output end needs to be controlled, the closed cooling tower used in the second circulating water flow can effectively control the temperature of the process fluid. In addition, considering the low temperature in winter, the water temperature drops quickly. A heater is connected in parallel with the second circulating water flow to prevent the water temperature from falling below 25° after passing through the closed cooling tower, which would make the water temperature unsuitable for concrete mixing.

[0074] Furthermore, a heat exchanger is provided between the first circulating water circuit and the second circulating water circuit, so that the first circulating water circuit can be cooled by the relatively low temperature of the second circulating water circuit, thus saving resources;

[0075] Example 2

[0076] On the basis of Example 1, Figure 1 As shown, this embodiment is a concrete mixing station, which adopts the above-mentioned circulating water temperature-controlled water supply system, including a mixing main unit, a batching system, a water supply system, a control system, a storage system and a conveying system;

[0077] The mixing machine is used to mix various raw materials into concrete. The raw materials here include coarse aggregate, fine aggregate, powder and admixtures, etc. Of course, water is added as needed during mixing;

[0078] The batching system is used to weigh the raw materials, additives and admixtures according to the predetermined proportions and feed them into the mixing host;

[0079] The water supply system is equipped with a circulating water circuit temperature control system to ensure that the water temperature in the circulating water circuit remains consistent. The water temperature in the mixed concrete is 15°-25°.

[0080] The control system is equipped with an automated control system that can accurately control the ingredients, water supply system and mixing process to ensure the quality of concrete;

[0081] Storage systems are used to store raw materials, semi-finished products, finished products, and other materials to ensure material safety, improve efficiency, reduce waste, and support the smooth operation of the entire supply chain;

[0082] Conveyor systems are used to transport raw materials, semi-finished products and finished products from warehouses to batching systems.

[0083] Example 3

[0084] This embodiment is a temperature control method for a concrete mixing plant, which aims to control the temperature stability of the concrete production process and ensure the quality of concrete production. Figure 6 As shown, the method includes the following steps:

[0085] S1, in the total circulating water circuit, water flows from the water tank to the boiler device for heating, and when the water temperature reaches 90°, the water is discharged, and the temperature and pressure are measured, and then flows through the first circulating water circuit;

[0086] S2: In the first circulating water circuit, the predetermined temperature is reduced to 65°-75°C. The first heat exchanger is connected in series with the open cooling tower, and the circulating water flows into the open cooling tower for cooling. After the circulating water flows out of the open cooling tower, it is detected by the temperature detector T6. If the temperature is higher than 80°C, the two-way control valve M2 is opened and the water flows into the open cooling tower for cooling again. If the water temperature is lower than 75°C, it flows back to the main circulating water circuit, enters the high-temperature pipe, and then flows through the second circulating water circuit.

[0087] S3: In the second circulating water circuit, the predetermined temperature is reduced to 30°-40°. The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in series. Water flows into the second heat exchanger to exchange heat with the first circulating water flow. The temperature is detected by the temperature monitor T7. If the temperature is higher than 40°, the two-way control valve M3 is closed, and the water flows into the closed cooling tower for precision cooling. After the water flows out of the closed cooling tower, it passes through multiple stages of detection and flows into the main circulating water circuit.

[0088] S4. In the total circulating water circuit, the circulating water flows into each outlet pipe at the output end. After the temperature detector on the outlet pipe determines the temperature, if the water temperature of the outlet pipe is 15°-25°, the three-way control valve is opened to connect to the mixing host for drainage. If the temperature is higher than 25°, the three-way control valve is opened to connect to the turbulence component for mixing and reflux before returning to the water tank;

[0089] In step S3, after the water flows out of the closed cooling tower, it is detected by the temperature detector T8.

[0090] 1) When the temperature is higher than 40°, open the two-way control valve M4, open the three-way control valve M9 to connect the second heat exchanger, and then lead to the closed cooling tower for further cooling;

[0091] 2) When the temperature is between 30° and 40°, open the two-way control valve M4 and the three-way control valve M9 to connect the third heat exchanger and flow into the main circulating water circuit;

[0092] 3) When the temperature is lower than 30°, close the two-way control valve M4, start the heater to heat the water temperature to 30°-40°, and after detection by the temperature detector T9, open the three-way control valve M9 to connect the third heat exchanger and flow into the main circulating water circuit.

[0093] In step S4, the circulating water flows into the turbulent flow component, first enters the turbulent flow pipe through the return pipe for pre-mixing, and then flows into the mixed temperature water tank for static heat exchange. When the mixed temperature water tank reaches half the tank scale, the water is drained and the mixed temperature test is performed before returning to the water tank and heat exchange reflux;

[0094] Mixed temperature detection: The mixed temperature water flows through the temperature detector T5 to detect the water temperature. If the water temperature is lower than 10°, the three-way control valve M8 is opened to connect to the water tank, and the water flows back to the water tank and recirculates. Otherwise, heat exchange reflux is performed;

[0095] Heat exchange reflux: The mixed temperature water flows through the temperature detector T5 to detect the water temperature.

[0096] 1) When the temperature is higher than 25°C and lower than 30°C, open the three-way control valve M8 and the two-way control valve M1, connect the output end, perform temperature detection and participate in drainage;

[0097] 2) When the water temperature is higher than 10° and lower than 15°, open the three-way control valve M8 and close the two-way control valve M1. The mixed temperature water flows through the low-temperature pipe and the high-temperature pipe through the heat conduction plate for heat exchange and temperature rise, then enters the output end to detect the water temperature again and participate in drainage.

[0098] The present invention sets multi-stage heating and cooling temperature adjustment points on the circulating water circuit, and sets multiple groups of drainage pipes at the output end to participate in drainage and circular hydrological detection at the same time. The water temperature is measured before the water is discharged. The water pipes whose water temperature does not meet the standard will not participate in the drainage, and will flow back to the main water circulation water circuit for temperature adjustment. This not only ensures the accuracy of the water temperature, but also saves energy by absorbing and utilizing the residual heat through repeated circulation and temperature adjustment. High-temperature pipes, low-temperature pipes and heat exchange structures are set on the above-mentioned total circulating water circuit. Heat sinks and heat conducting plates are set on the outside of the high-temperature pipes to increase the heat dissipation of the high-temperature pipes, and low-temperature pipes are connected to provide a heat source for the low-temperature pipes. The heat dissipation of the high-temperature pipes is used to heat the low-temperature pipes, thereby improving energy utilization and saving resources. On the basis of saving energy and resources, the patent of the present invention controls the temperature to improve the quality of concrete and ensure quality stability.

[0099] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water supply system with circulating water temperature regulation, characterized in that: The system includes a main circulating water circuit, a first circulating water circuit and a second circulating water circuit; The total circulation water circuit includes: a water tank, a boiler device, a first heat exchanger, a third heat exchanger, an output end, a heat exchange chamber and a turbulent flow component; the water tank, the boiler device, the first heat exchanger, the heat exchange chamber, the third heat exchanger, the output end and the turbulent flow component in the total circulation water circuit are connected in sequence, the output end is provided with multiple groups of water outlet pipes for draining the mixing main unit, the output end of the turbulent flow component is connected to a temperature detection T5 and a three-way control valve M8, the two ends of the three-way control valve M8 are connected in series with the water tank and the output end respectively; the heat exchange The chamber comprises a high-temperature tube (1) and a low-temperature tube (2), wherein the high-temperature tube (1) is located between a first heat exchanger and a second heat exchanger, and the low-temperature tube (2) is connected in parallel with a two-way control valve; a plurality of heat sinks (11) are provided on the outer side of the high-temperature tube (1), wherein the heat sinks (11) are evenly distributed, and heat conducting sheets (12) are provided between the intervals of the heat sinks (11); a calcium chloride heat absorbing sleeve (21) is provided on the outer side of the low-temperature tube (2), and the outer side of the calcium chloride heat absorbing sleeve (21) is covered with a heat insulation sleeve (22). The heat conducting sheet (12) passes through the heat-insulating sleeve (22) and the calcium chloride heat-absorbing sleeve (21) and contacts the low-temperature tube (2); the turbulent flow assembly comprises a return pipe (3) and a temperature-mixing water tank (4); the return pipe (3) is fixedly connected to the temperature-mixing water tank (4); the return pipe (3) is a plurality of return pipes (3); the return pipe (3) comprises a water inlet pipe (31) and a turbulent flow pipe (33); the water inlet pipe (31) is fixedly connected to the turbulent flow pipe (33); a connection is formed between the water inlet pipe (31) and the turbulent flow pipe (33); The buffer chamber (32) is provided with a turbulent blade (34) on the inner wall of the turbulent pipe (33), and a guide plate (35) is provided on the turbulent pipe (33). The guide plate (35) is fixedly connected to the mixed temperature water tank (4). The circulating water of the total circulating water circuit flows from the water tank to the boiler device through a circulating pump for heating. After the temperature is reduced through multi-stage heat exchange, the qualified warm water is judged by the temperature control valve and sent to the mixing host. The unqualified warm water is mixed and the water temperature is tested again and returned to the water tank through the three-way control valve M8; The first circulating water circuit is connected to an open cooling tower to perform preliminary cooling of the total circulating water circuit, and is connected to the second circulating water circuit through a heat exchanger for heat exchange treatment; The second circulating water circuit is connected to a closed cooling tower to precisely cool the total circulating water circuit, and the temperature of the circulating water circuit is detected to control the temperature to reach the temperature required for stirring; The first circulating water circuit includes a first heat exchanger, an open cooling tower, and a second heat exchanger; The first heat exchanger, the open cooling tower and the second heat exchanger are connected in sequence, the output end of the second heat exchanger is provided with a temperature detector T6, and the first circulating water path is provided with a two-way control valve M2; The circulating water in the first circulating water circuit flows out of the first heat exchanger, flows through the open cooling tower, and after cooling, exchanges heat with the second circulating water circuit through the second heat exchanger, and then returns to the first heat exchanger after being detected by the temperature detector T6; The second circulating water circuit includes a third heat exchanger, a second heat exchanger, a closed cooling tower and a heater; The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in sequence. A two-way control valve M4 is connected in parallel to the heating machine. The heating machine is connected in parallel between the closed cooling tower and the third heat exchanger. Temperature detectors T7 and T8 are respectively provided at both ends of the closed cooling tower, and a three-way control valve M9 is connected in parallel. The three-way control valve M9 is connected to the input end of the third heat exchanger. Two-way control valves M3 are connected in parallel to both ends of the third heat exchanger. The circulating water in the second circulating water circuit flows out from the third heat exchanger, flows through the second heat exchanger to exchange heat with the first circulating water circuit, and then flows into the closed cooling tower for precision cooling. After being detected by the temperature detector T8, it flows into the third heat exchanger. When the temperature is lower than the temperature required for stirring, it can be heated by the heater.

2. A water supply system with circulating water temperature regulation according to claim 1, characterized in that: The water outlet pipe at the output end is provided with a temperature detector T2 and a three-way control valve M5. The other two ends of the three-way control valve M5 are connected to the return pipe and the mixing main unit respectively. The water outlet pipes are provided in multiple groups. The output end of the temperature-mixing water tank is provided with a temperature detector T5 and is connected to a three-way control valve M8, wherein the two ends of the three-way control valve M8 are connected to the temperature-mixing water tank and the water tank respectively; The other end of the three-way control valve M8 is connected to the output end and is connected in parallel with the low-temperature tube and the two-way control valve M1.

3. A concrete mixing station, characterized by: The concrete mixing station adopts the circulating water temperature-controlled water supply system according to any one of claims 1-2, and the concrete mixing station includes a mixing main unit, a batching system, a water supply system, a control system, a storage system and a conveying system; The mixing host is used to mix various raw materials into concrete; The batching system is used to weigh the raw materials, additives and admixtures according to the predetermined proportions and feed them into the mixing main unit; The water supply system is provided with a circulating water circuit temperature control to ensure that the water temperature in the circulating water circuit remains consistent, and the water temperature in the mixed concrete is 15°-25°; The control system is equipped with an automated control system that can accurately control the ingredients, water supply system and mixing process to ensure the quality of the concrete; The storage system is used to store raw materials, semi-finished products, finished products and other materials to ensure material safety, improve efficiency and reduce waste, and support the smooth operation of the entire supply chain; The conveying system is used to transport raw materials, semi-finished products and finished products from the warehouse to the batching system.

4. A temperature control method, characterized in that: The method is based on the water supply system with circulating water temperature regulation according to any one of claims 1-2, comprising: S1, in the total circulating water circuit, water flows from the water tank to the boiler device for heating, and when the water temperature reaches 90°, the water is discharged, and the temperature and pressure are measured, and then flows through the first circulating water circuit; S2: In the first circulating water circuit, the predetermined temperature is reduced to 65°-75°C. The first heat exchanger is connected in series with the open cooling tower, and the circulating water flows into the open cooling tower for cooling. After the circulating water flows out of the open cooling tower, it is detected by the temperature detector T6. If the temperature is higher than 80°C, the two-way control valve M2 is opened and the water flows into the open cooling tower for cooling again. If the water temperature is lower than 75°C, it flows back to the main circulating water circuit, enters the high-temperature pipe, and then flows through the second circulating water circuit. S3: In the second circulating water circuit, the predetermined temperature is reduced to 30°-40°. The third heat exchanger, the second heat exchanger, and the closed cooling tower are connected in series. Water flows into the second heat exchanger to exchange heat with the first circulating water flow. The temperature is detected by the temperature monitor T7. If the temperature is higher than 40°, the two-way control valve M3 is closed, and the water flows into the closed cooling tower for precision cooling. After the water flows out of the closed cooling tower, it passes through multiple stages of detection and flows into the main circulating water circuit. S4. In the total circulating water circuit, the circulating water flows into each outlet pipe at the output end. After the temperature is determined by the temperature detector on the outlet pipe, if the water temperature of the outlet pipe is 15°-25°, the three-way control valve is opened to connect the mixing host for drainage. If the temperature is higher than 25°, the three-way control valve is opened to connect the turbulence component for mixing and reflux, and then returned to the water tank.

5. A temperature control method according to claim 4, characterized in that: In step S3, after the water flows out of the closed cooling tower, it is detected by the temperature detector T8. 1) When the temperature is higher than 40°, open the two-way control valve M4, open the three-way control valve M9 to connect the second heat exchanger, and then lead to the closed cooling tower for further cooling; 2) When the temperature is between 30° and 40°, open the two-way control valve M4 and the three-way control valve M9 to connect the third heat exchanger and flow into the main circulating water circuit; 3) When the temperature is lower than 30°, close the two-way control valve M4, start the heater to heat the water temperature to 30°-40°, and after detection by the temperature detector T9, open the three-way control valve M9 to connect the third heat exchanger and flow into the main circulation water circuit.

6. A temperature control method according to claim 4, characterized in that: In step S4, the circulating water flows into the turbulent flow component, first enters the turbulent flow pipe through the return pipe for pre-mixing, and then flows into the mixed temperature water tank for static heat exchange. When the mixed temperature water tank reaches half the tank scale, the water is drained and the mixed temperature test is performed before returning to the water tank and heat exchange reflux; Mixed temperature detection: The mixed temperature water flows through the temperature detector T5 to detect the water temperature. If the temperature is lower than 10°, the three-way control valve M8 is opened to connect to the water tank, and the water flows back to the water tank and recirculates. Otherwise, heat exchange reflux is performed. The heat exchange reflux: the mixed temperature water flows through the temperature detector T5 to detect the water temperature, When the water temperature is higher than 25° and lower than 30°, open the three-way control valve M8 and the two-way control valve M1, connect the output end, perform temperature detection and participate in drainage; When the water temperature is higher than 10° and lower than 15°, open the three-way control valve M8 and close the two-way control valve M1. The mixed temperature water flows through the low-temperature pipe and the high-temperature pipe through the heat conduction plate for heat exchange and temperature rise, and then enters the output end to detect the water temperature again and participate in drainage.

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