A multi-energy complementary heating system for a mixing station stock bin based on full solar energy utilization

Abstract

The utility model discloses a kind of mixing station material bin multi-energy complementary heating system based on solar full-effect utilization, belong to mixing station material bin heating and heat preservation technical field, including heating bin, PVT component, heat accumulator, first heat exchanger, water source heat pump component, second heat exchanger and heating end, multiple heat source circulation loops and multiple heating circulation loops are formed by connecting pipe between each component connection;Heat accumulator, first heat exchanger, water source heat pump component, second heat exchanger are set in heating bin;Heating end is installed in mixing station material bin;The evaporation side of water source heat pump component is connected with PVT component, heat accumulator, first heat exchanger respectively by connecting pipe and is in parallel, forming three heat source circulation loops;The condensation side of water source heat pump component is connected with second heat exchanger, and second heat exchanger is connected with multiple heating ends by connecting pipe and is in parallel, forming multiple heating circulation loops.The utility model is heated and heat preserved for winter concrete aggregate by solar full-effect utilization and multi-energy complementary heating.

Description

Technical Field

[0001] This utility model belongs to the field of heating and insulation technology for mixing plant silos, specifically a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy. Background Technology

[0002] As a crucial link in the concrete production process, the temperature stability of the aggregate in the mixing plant's silos directly affects the quality of concrete mixing and the continuity of winter construction. In cold or low-temperature environments, the temperature inside the silos can easily drop below 0°C, causing the concrete aggregate to freeze and clump, leading to blockages in conveying equipment and even construction interruptions. This severely impacts the concrete mix design and construction quality. Therefore, in the severe cold season, how to heat and insulate the concrete aggregate in the mixing plant's silos is a core industry requirement.

[0003] Currently, common silo heating methods in existing technologies include coal-fired boilers, electric heating, and oil-fired heating. While these methods can meet basic heating needs, they still have many shortcomings: they rely heavily on a single energy source, failing to achieve comprehensive and efficient utilization of solar energy, and lacking a multi-energy complementary systemic heating solution. This results in low energy utilization, poor system reliability, high operating costs, and difficulty in providing stable and continuous heat to the silos under frigid conditions. Furthermore, when existing solar heating systems are used for silo insulation in mixing plants, they are generally limited to utilizing either photovoltaic power generation or solar thermal energy, or only for power generation or only for heating. They fail to integrate PVT (photovoltaic-thermal integrated) modules to build a photovoltaic-thermal synergistic utilization mechanism, resulting in insufficient utilization of the overall energy efficiency of solar energy. They cannot simultaneously convert photovoltaic power generation into the electrical energy required for system operation, nor can they efficiently integrate solar thermal resources to heat the silos, showing a significant gap compared to the energy-saving requirements of multi-energy complementarity.

[0004] Therefore, there is an urgent need for a batching plant silo heating system that can achieve full utilization of solar energy, possess multi-energy complementarity and heat storage capabilities, provide stable heating, and is energy-saving and environmentally friendly, in order to improve the overall energy utilization efficiency, ensure the quality of concrete construction in winter, and promote the green and low-carbon transformation of batching plants. Utility Model Content

[0005] To achieve the above objectives, this utility model provides a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy, adopting the following technical solution: A multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy, comprising: The heating chamber, PVT components, heat storage tank, first heat exchanger, water source heat pump components, second heat exchanger and heating terminal are connected by connecting pipes to form multiple heat source circulation loops and multiple heating circulation loops. The heat accumulator, the first heat exchanger, the water source heat pump assembly, and the second heat exchanger are all located inside the heating silo; the PVT assembly is located on top of the mixing plant silo; and the heating terminal is installed inside the mixing plant silo. The evaporator side of the water source heat pump assembly is connected in parallel with the PVT assembly, the heat storage device, and the first heat exchanger via connecting pipes to form three heat source circulation loops, and the three heat source circulation loops are independently opened and closed by solenoid valves; the condenser side of the water source heat pump assembly is connected to the second heat exchanger, and the second heat exchanger is connected in parallel with multiple heating terminals via connecting pipes to form multiple heating circulation loops.

[0006] Furthermore, the first connecting pipe on the evaporator side of the water source heat pump assembly is connected to the first pipe of the PVT assembly through a first tee pipe, and the second connecting pipe on the evaporator side of the water source heat pump assembly is connected to the second pipe of the PVT assembly through a second tee pipe to form a first heat source circulation loop; a first solenoid valve is provided on the first connecting pipe, a second solenoid valve is provided on the second connecting pipe, a third solenoid valve and a first water pump are provided on the first pipe, and a fourth solenoid valve is provided on the second pipe.

[0007] Furthermore, the first connecting pipe on the evaporation side of the water source heat pump assembly is connected to the third pipe of the first heat exchanger through the first tee pipe, and the second connecting pipe on the condensation side is connected to the fourth pipe of the first heat exchanger to form a second heat source circulation loop; a second water pump and a fifth solenoid valve are installed on the third pipe, and a sixth solenoid valve is installed on the fourth pipe.

[0008] Furthermore, the fifth pipe of the heat accumulator is connected to the third pipe and is located between the second water pump and the fifth solenoid valve. The sixth pipe of the heat accumulator is connected to the second pipe to communicate with the water source heat pump assembly to form a third heat source circulation loop. A seventh solenoid valve is provided on the fifth pipe, and an eighth solenoid valve is provided on the sixth pipe.

[0009] Furthermore, the third connecting pipe on the condenser side of the water source heat pump assembly is connected to the first interface of the second heat exchanger through the first pipe, and the fourth connecting pipe on the condenser side is connected to the second interface of the second heat exchanger through the second pipe; a third water pump is provided on the first pipe, and a ninth solenoid valve is provided on the fourth connecting pipe.

[0010] Furthermore, the heating terminal includes radiators and underfloor heating pipe network; the radiators are installed on the inner wall of the mixing plant silo and connected to the second heat exchanger through pipes; the underfloor heating pipe network is installed at the bottom of the mixing plant silo floor and connected to the second heat exchanger through pipes.

[0011] Furthermore, the third port of the second heat exchanger is connected to the first inlet pipe of the radiator through a third pipe, and the fourth port of the second heat exchanger is connected to the first outlet pipe of the radiator through a fourth pipe; a tenth solenoid valve and a fourth water pump are installed on the third pipe, and an eleventh solenoid valve is installed on the fourth pipe; a twelfth solenoid valve is installed on the first inlet pipe, and a thirteenth solenoid valve is installed on the first outlet pipe.

[0012] Furthermore, the second inlet pipe of the underfloor heating network is connected to the third pipe, and the second outlet pipe of the underfloor heating network is connected to the fourth pipe; a fourteenth solenoid valve is installed on the second inlet pipe, and a fifteenth solenoid valve is installed on the second outlet pipe.

[0013] Furthermore, it also includes insulation boards, which are installed on the outer wall of the mixing plant's silo.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy. The system innovatively integrates PVT components to simultaneously generate electricity and heat, constructing a photovoltaic-thermal synergistic utilization mechanism. By integrating solar photovoltaic and solar thermal technologies, air energy, and thermal storage technologies, it achieves cascaded utilization of energy and multi-energy complementarity, resulting in low operating costs, stable and reliable heating, environmental friendliness, and significant energy-saving effects. The system can ensure that the aggregate in the silo is maintained at a certain temperature in severe cold environments, effectively preventing aggregate freezing and ensuring the quality of concrete construction in winter. At the same time, it significantly reduces energy consumption and carbon emissions, providing a high-efficiency, economical, and green clean energy heating solution for mixing plants. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure connecting the mixing plant silo multi-energy complementary heating system based on the full utilization of solar energy to the mixing plant silo of this utility model; Figure 2 This is a schematic diagram of the pipeline connection of the mixing plant silo multi-energy complementary heating system based on the full utilization of solar energy according to this utility model. In the diagram: 1. PVT module; 2. Heat accumulator; 3. First heat exchanger; 4. Water source heat pump module; 5. Second heat exchanger; 6. Radiator; 7. Underfloor heating network; 8. Fourth solenoid valve; 9. Eighth solenoid valve; 10. Sixth solenoid valve; 11. Second solenoid valve; 12. Ninth solenoid valve; 13. Eleventh solenoid valve; 14. Thirteenth solenoid valve; 15. Fifteenth solenoid valve; 16. Fourteenth solenoid valve; 17. Twelfth solenoid valve; 18. Fourth water pump; 19. Tenth solenoid valve; 20. Third water pump; 21. First solenoid valve; 22. Second water pump; 23. Fifth solenoid valve; 24. Seventh solenoid valve; 25. Third solenoid valve; 26. First water pump; 27. Mixing plant silo; 28. Heating silo; 29. ​​Insulation board. Detailed Implementation

[0017] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0018] Example 1

[0019] like Figures 1 to 2 As shown, a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy includes: The heating chamber 28, PVT component 1, heat storage 2, first heat exchanger 3, water source heat pump component 4, second heat exchanger 5 and heating terminal are connected by connecting pipes to form multiple heat source circulation loops and multiple heating circulation loops. The heat accumulator 2, the first heat exchanger 3, the water source heat pump assembly 4, and the second heat exchanger 5 are all installed inside the heating chamber 28; the PVT assembly 1 is installed on top of the mixing plant silo 27; the heating terminal is installed inside the mixing plant silo 27; the heating chamber 28 is located next to the mixing plant silo 27, and the heating chamber 28 integrates the heat accumulator 2, the first heat exchanger 3, the water source heat pump assembly 4, and the second heat exchanger 5. The chamber body of the heating chamber 28 is insulated to reduce internal heat loss. The evaporator side of the water source heat pump assembly 4 is connected in parallel with the PVT assembly 1, the heat storage unit 2, and the first heat exchanger 3 via connecting pipes to form three heat source circulation loops, and the three heat source circulation loops are independently opened and closed by solenoid valves; the condenser side of the water source heat pump assembly 4 is connected to the second heat exchanger 5, and the second heat exchanger 5 is connected in parallel with multiple heating terminals via connecting pipes to form multiple heating circulation loops.

[0020] Among them, the PVT component 1 adopts a modular design and is laid on the load-bearing support on the top of the mixing plant silo 27. The output end of the PVT component 1 is connected to the water source heat pump component 4 in the heating silo 28 through a pipeline.

[0021] Through the above technical solution, when there is sufficient sunlight during the day, the first solenoid valve 21, the second solenoid valve 11, the third solenoid valve 25, the fourth solenoid valve 8 and the first water pump 26 are opened. The heat energy collected by the PVT component 1 is circulated to the evaporation side of the water source heat pump component 4 through a medium (such as antifreeze) to provide initial heat energy for the water source heat pump. At the same time, the electrical energy generated by the PVT component 1 can be preferentially used to power electrical components such as water pumps and solenoid valves in the system, so as to achieve energy self-sufficiency.

[0022] In this embodiment, the first connecting pipe on the evaporator side of the water source heat pump assembly 4 is connected to the first pipe of the PVT assembly 1 through a first tee pipe, and the second connecting pipe on the evaporator side of the water source heat pump assembly 4 is connected to the second pipe of the PVT assembly 1 through a second tee pipe to form a first heat source circulation loop; a first solenoid valve 21 is provided on the first connecting pipe, a second solenoid valve 11 is provided on the second connecting pipe, a third solenoid valve 25 and a first water pump 26 are provided on the first pipe, and a fourth solenoid valve 8 is provided on the second pipe.

[0023] With the above technical solution, when there is sufficient external sunlight (such as during the day), the PVT components laid on the top of the mixing plant's silos simultaneously activate dual functions: Solar thermal harvesting: The solar thermal panels in the PVT module absorb solar radiation energy and convert it into heat energy to heat the circulating medium inside the module (such as antifreeze). Photovoltaic power generation: The photovoltaic panels in PVT modules convert solar energy into electrical energy, which is then used to power electrical components within the system (such as water pumps and solenoid valves), achieving partial energy self-sufficiency.

[0024] In this embodiment, the first connecting pipe on the evaporation side of the water source heat pump assembly 4 is connected to the third pipe of the first heat exchanger 3 through the first tee pipe, and the second connecting pipe on the condensation side is connected to the fourth pipe of the first heat exchanger 3 to form a second heat source circulation loop; a second water pump 22 and a fifth solenoid valve 23 are provided on the third pipe, and a sixth solenoid valve 10 is provided on the fourth pipe.

[0025] In this embodiment, the fifth pipe of the heat accumulator 2 is connected to the third pipe and is located between the second water pump 22 and the fifth solenoid valve 23. The sixth pipe of the heat accumulator 2 is connected to the second pipe to communicate with the water source heat pump assembly 4 to form a third heat source circulation loop. A seventh solenoid valve 24 is provided on the fifth pipe, and an eighth solenoid valve 9 is provided on the sixth pipe.

[0026] In this embodiment, the third connecting pipe on the condenser side of the water source heat pump assembly 4 is connected to the first interface of the second heat exchanger 5 through the first pipe, and the fourth connecting pipe on the condenser side is connected to the second interface of the second heat exchanger 5 through the second pipe; a third water pump 20 is provided on the first pipe, and a ninth solenoid valve 12 is provided on the fourth connecting pipe.

[0027] In this embodiment, the heating terminal includes radiators 6 and underfloor heating pipe network 7; radiators 6 are installed on the inner wall of the mixing plant silo 27 and connected to the second heat exchanger 5 through pipes; underfloor heating pipe network 7 is installed at the bottom of the floor of the mixing plant silo 27 and connected to the second heat exchanger 5 through pipes.

[0028] In this embodiment, the third interface of the second heat exchanger 5 is connected to the first water inlet pipe of the radiator 6 through the third pipe, and the fourth interface of the second heat exchanger 5 is connected to the first water outlet pipe of the radiator 6 through the fourth pipe; the third pipe is equipped with a tenth solenoid valve 19 and a fourth water pump 18, and the fourth pipe is equipped with an eleventh solenoid valve 13; the first water inlet pipe is equipped with a twelfth solenoid valve 17, and the first water outlet pipe is equipped with a thirteenth solenoid valve 14.

[0029] With the above technical solution, when the temperature of the upper space of the silo is lower than the set value, the third water pump 20, the tenth solenoid valve 19, the eleventh solenoid valve 13, the twelfth solenoid valve 17, and the thirteenth solenoid valve 14 are turned on. The heat energy generated by the condenser side of the water source heat pump is transferred to the radiator 6 through the second heat exchanger 5, which quickly raises the temperature of the upper space of the silo.

[0030] In this embodiment, the second inlet pipe of the underfloor heating network 7 is connected to the third pipe, and the second outlet pipe of the underfloor heating network 7 is connected to the fourth pipe; a fourteenth solenoid valve 16 is installed on the second inlet pipe, and a fifteenth solenoid valve 15 is installed on the second outlet pipe.

[0031] Among them, the heating radiators 6 are evenly arranged along the inner wall of the mixing plant silo 27, and the floor heating pipe network 7 is laid in an S-shape on the insulation layer under the silo floor. The pipe network is covered with a heat-insulating and reflective film to improve heat transfer efficiency.

[0032] Through the above technical solution, when the temperature of the aggregate at the bottom of the silo is lower than the set value, the third water pump 20, the tenth solenoid valve 19, the eleventh solenoid valve 13, the twelfth solenoid valve 17, the fifteenth solenoid valve 15, and the fourteenth solenoid valve 16 are activated. Heat energy is transferred to the silo floor through the underfloor heating network 7, directly heating the aggregate and preventing it from freezing and clumping. If a comprehensive temperature increase is required, the radiators 6 and the underfloor heating network 7 circuits can be activated simultaneously to achieve three-dimensional heating. This system, through the radiators and underfloor heating network located within the silo, forms a three-dimensional heating terminal, which can quickly and evenly raise the temperature of the silo space and the bottom aggregate, maintaining it at a constant temperature. This fundamentally prevents the aggregate from freezing and clumping, prevents blockage of conveying equipment and construction interruptions, and ensures the accuracy of the concrete mix proportions and the quality of winter construction.

[0033] In this embodiment, an insulation board 29 is also included. The insulation board 29 is installed on the outer wall of the mixing plant silo 27. The insulation board 29 reduces heat loss inside the silo, maintains a stable temperature inside the silo, and ensures the insulation effect of the aggregate.

[0034] This utility model provides a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy. The connection sequence of the first heat circulation loop is as follows: water source heat pump component 4, first connecting pipe (connected to the first solenoid valve 21), first tee pipe, first pipeline (connected to the third solenoid valve 25 and the first water pump 26), PVT component 1, second pipeline (connected to the fourth solenoid valve 8), second tee pipe, second connecting pipe (connected to the second solenoid valve 11), and water source heat pump component 4. This first heat circulation loop uses solar energy as the core heat source and realizes the dual functions of light and heat collection and photovoltaic power supply through the PVT component, providing initial heat energy to the evaporation side of the water source heat pump component 4. The connection sequence of the second heat cycle loop is as follows: evaporator side of water source heat pump assembly 4, first connecting pipe (connected to first solenoid valve 21), first tee pipe, third pipe (connected to second water pump 22 and fifth solenoid valve 23), first heat exchanger 3; condenser side of water source heat pump assembly 4, second connecting pipe, fourth pipe (connected to sixth solenoid valve 10), first heat exchanger 3. The connection sequence of the third heat source circulation loop is as follows: water source heat pump assembly 4, first connecting pipe (connected to the first solenoid valve 21), third pipe, fifth pipe (connected to the seventh solenoid valve 24), heat accumulator 2, sixth pipe (connected to the eighth solenoid valve 9), second pipe, and water source heat pump assembly 4. The connection between the condenser side of the water source heat pump and the heating circuit allows the heat energy generated by the condenser side of the water source heat pump to be transferred to the heating terminals (radiators and underfloor heating pipes) in the mixing plant's silo through the second heat exchanger, achieving three-dimensional and precise heating of the upper space and the lower aggregate, ensuring that the aggregate does not fall below the safe temperature.

[0035] The working method of the multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy provided by this utility model is as follows: (1) When there is sufficient external light (such as during the day), the first solenoid valve 21, the second solenoid valve 11, the third solenoid valve 25, the fourth solenoid valve 8 and the first water pump 26 in the first heat source circulation loop are opened. The heat energy collected by the PVT component 1 directly provides heat source to the evaporator side of the water source heat pump 4, giving priority to meeting the needs of radiators or underfloor heating pipe networks. When the heat supply of the PVT component 1 is excessive (such as when the midday sun is strong), the second water pump 22, the seventh solenoid valve 24 and the eighth solenoid valve 9 are opened. The excess heat energy is stored in the heat storage tank 2. The electrical energy generated by the PVT supplies power to the system controller and solenoid valves.

[0036] (2) When there is insufficient light (such as on cloudy days or at dusk) or insufficient heat supply from PVT component 1, if the heat storage temperature is greater than or equal to the set temperature, the eighth solenoid valve 9 and the second solenoid valve 11 are opened to release the heat energy stored in the heat storage unit 2 to supply energy to the water source heat pump; if the heat storage temperature is less than the set temperature, the second water pump 22, the fifth solenoid valve 23, the sixth solenoid valve 10, the first solenoid valve 21 and the second solenoid valve 11 are opened to connect to an external auxiliary heat source (such as waste heat from the factory area, municipal hot water, etc.) through the first heat exchanger 3 to supplement the heat energy demand of the evaporation side of the water source heat pump and ensure the stable operation of the heat pump; if all passive heat sources are insufficient, the heat pump compressor is started to directly heat.

[0037] (3) At night, open the eighth solenoid valve 9 and the second solenoid valve 11 to release the heat energy stored in the heat storage tank 2 to provide energy for the water source heat pump and realize peak energy use; if there is a power outage but there is heat storage and the heating demand is low, passive heat release (gravity / small circulation) can be set or manual intervention can be waited to ensure that the aggregate is not lower than the safe temperature.

[0038] This utility model provides a multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy. By setting up three heat source loops in parallel, namely PVT, heat storage, and first heat exchanger, the system can intelligently and flexibly switch or combine heat sources according to weather and day-night changes. During the day, solar energy is used first, and excess heat is stored in the heat storage. At night or when there is insufficient sunlight, the heat storage or auxiliary heat source is automatically activated, effectively overcoming the shortcomings of intermittent and unstable solar energy, and ensuring that the silos can obtain a continuous and stable heat supply in severe cold environments.

[0039] This system achieves comprehensive and efficient utilization of solar energy and multi-energy complementarity. It innovatively integrates PVT modules to simultaneously generate electricity and heat, constructing a photovoltaic-thermal synergistic utilization mechanism. Specifically, photovoltaic power generation can directly supply electricity to pumps, valves, and other electrical equipment within the system, achieving energy self-sufficiency. The solar thermal component serves as a highly efficient heat source, complementing air source heat pumps (via water source heat pumps), external waste heat, and thermal storage devices, thus changing the traditional single-energy dependence model and significantly improving overall energy utilization efficiency and system reliability.

[0040] The above are merely preferred embodiments of the present utility model and do not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy, characterized in that, include: The heating chamber, PVT components, heat storage tank, first heat exchanger, water source heat pump components, second heat exchanger and heating terminal are connected by connecting pipes to form multiple heat source circulation loops and multiple heating circulation loops. The heat accumulator, the first heat exchanger, the water source heat pump assembly, and the second heat exchanger are all located inside the heating silo; the PVT assembly is located on top of the mixing plant silo; and the heating terminal is installed inside the mixing plant silo. The evaporator side of the water source heat pump assembly is connected in parallel with the PVT assembly, the heat storage device, and the first heat exchanger via connecting pipes to form three heat source circulation loops, and the three heat source circulation loops are independently opened and closed by solenoid valves; the condenser side of the water source heat pump assembly is connected to the second heat exchanger, and the second heat exchanger is connected in parallel with multiple heating terminals via connecting pipes to form multiple heating circulation loops.

2. The multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy as described in claim 1, characterized in that, The first connecting pipe on the evaporator side of the water source heat pump assembly is connected to the first pipe of the PVT assembly through a first tee pipe, and the second connecting pipe on the evaporator side of the water source heat pump assembly is connected to the second pipe of the PVT assembly through a second tee pipe to form a first heat source circulation loop; a first solenoid valve is provided on the first connecting pipe, a second solenoid valve is provided on the second connecting pipe, a third solenoid valve and a first water pump are provided on the first pipe, and a fourth solenoid valve is provided on the second pipe.

3. The multi-energy complementary heating system for mixing plant silos based on the full utilization of solar energy as described in claim 2, characterized in that, The first connecting pipe on the evaporator side of the water source heat pump assembly is connected to the third pipe of the first heat exchanger through the first tee pipe, and the second connecting pipe on the condenser side is connected to the fourth pipe of the first heat exchanger to form a second heat source circulation loop; a second water pump and a fifth solenoid valve are installed on the third pipe, and a sixth solenoid valve is installed on the fourth pipe.

4. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 3, characterized in that, The fifth pipe of the heat accumulator is connected to the third pipe and is located between the second water pump and the fifth solenoid valve. The sixth pipe of the heat accumulator is connected to the second pipe to communicate with the water source heat pump assembly to form a third heat source circulation loop. A seventh solenoid valve is installed on the fifth pipe, and an eighth solenoid valve is installed on the sixth pipe.

5. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 4, characterized in that, The third connecting pipe on the condenser side of the water source heat pump assembly is connected to the first interface of the second heat exchanger through the first pipe, and the fourth connecting pipe on the condenser side is connected to the second interface of the second heat exchanger through the second pipe; a third water pump is provided on the first pipe, and a ninth solenoid valve is provided on the fourth connecting pipe.

6. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 5, characterized in that, The heating terminal includes radiators and underfloor heating pipe network; the radiators are installed on the inner wall of the mixing plant silo and connected to the second heat exchanger through pipes; the underfloor heating pipe network is installed at the bottom of the mixing plant silo floor and connected to the second heat exchanger through pipes.

7. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 6, characterized in that, The third port of the second heat exchanger is connected to the first inlet pipe of the radiator through a third pipe, and the fourth port of the second heat exchanger is connected to the first outlet pipe of the radiator through a fourth pipe; a tenth solenoid valve and a fourth water pump are installed on the third pipe, and an eleventh solenoid valve is installed on the fourth pipe; a twelfth solenoid valve is installed on the first inlet pipe, and a thirteenth solenoid valve is installed on the first outlet pipe.

8. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 7, characterized in that, The second inlet pipe of the underfloor heating network is connected to the third pipe, and the second outlet pipe of the underfloor heating network is connected to the fourth pipe; a fourteenth solenoid valve is installed on the second inlet pipe, and a fifteenth solenoid valve is installed on the second outlet pipe.

9. The multi-energy complementary heating system for mixing plant silos based on full solar energy utilization as described in claim 1, characterized in that, It also includes insulation boards, which are installed on the outer wall of the mixing plant's silo.

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