Garbage degradation heat recycling device and composite ecological breeding method using heat energy

Abstract

The invention relates to the technical field of solid waste treatment, and discloses a garbage degradation heat recycling device and a composite ecological breeding method utilizing heat energy. The heat output system is arranged at the position where garbage degradation heat needs to be utilized, so that abnormal temperature rise caused by heat dissipation in the garbage degradation process is avoided, the heat in the garbage degradation process can be recycled through all the heat collection modules, and the heat output system is driven by rotation of all the stirring impellers, so that the garbage degradation efficiency is improved. Garbage located on the movable layer can circularly move along all the mounting guide columns according to the orientation of all the stirring impellers, degradation heat near all the heat collection modules can be stably absorbed in the continuous degradation process of the garbage, meanwhile, sufficient mixing between the garbage and degradation organisms can be promoted, it is guaranteed that the degradation heat is generated stably, and the degradation efficiency of the garbage is improved. And the degraded garbage can be timely separated from each heat collecting pipe, so that the garbage which is being degraded to produce heat can be better contacted, and the degradation heat can be effectively recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment, and specifically to a garbage degradation heat recovery and utilization device and a composite ecological breeding method using thermal energy. Background Art

[0002] During the process of landfill treatment of garbage, a large amount of organic matter contained in the landfill garbage will undergo a degradation reaction under the action of microorganisms, and then release a large amount of heat energy. However, at present, most of this heat energy has not been effectively developed and utilized, but is directly dissipated into the surrounding environment, resulting in a great waste of energy, and may also have an adverse impact on the landfill and the surrounding environment. If the waste heat generated by the landfill is directly dissipated into the environment, it will cause the temperature of the surrounding air to rise, forming a local heat island effect.

[0003] The core of garbage degradation heat generation stems from biochemical reactions driven by microbial metabolic activities. Under aerobic conditions, thermophilic bacteria decompose organic substances such as carbohydrates, proteins, and fats, converting chemical energy into heat energy. However, in traditional composting or landfill designs, heat is mostly dissipated through natural convection and conduction, and only a small amount is used to maintain microbial activity, with an energy waste rate as high as 70%. The current mainstream garbage degradation heat recovery technologies include buried tube heat exchange, heat pump extraction, and leachate circulation. Among them, the shaft heat exchanger, as a representative of the buried tube heat exchange technology, is composed of vertical drilling, an internal metal or high-density polyethylene (HDPE) pipe, and a circulating working fluid (such as water or antifreeze). The pipes are embedded in the garbage heap in a grid layout, and the working fluid flows through the pipes under the drive of a pump, absorbs heat through heat exchange with the surrounding garbage, and then transfers the heat energy to the user end through a ground heat exchange station.

[0004] In addition, large landfills usually occupy a vast site space. Under the traditional treatment mode, after the landfill operation is completed, the land remains idle for a long time, making it difficult to achieve diversified and reasonable development and utilization, resulting in extremely low utilization efficiency of land resources. At present, while actively exploring the recovery and utilization of heat energy, the site is reused as a site for ecological breeding, and the development of various ecological breeding industries, such as ornamental flower planting and tropical ornamental fish breeding, can solve the problems of heat energy waste and site waste in landfills.

[0005] The fundamental defect of the conventional shaft heat exchanger lies in its passive heat recovery mechanism: heat acquisition is strictly limited by the physical contact range between the pipes and the garbage, and the anisotropy of the garbage heap leads to extremely uneven heat distribution. Taking a shaft with a depth of 10 meters as an example, its effective heat influence radius is only 1.2 meters, meaning that the temperature control volume of a single well is less than 50 cubic meters. Moreover, the position of the shaft pipe is fixed and cannot dynamically track the migration of the heat source, resulting in a large amount of heat escaping outward during the conduction process, and the recovery utilization rate of garbage degradation heat is insufficient. Summary of the Invention

[0006] In view of the deficiencies of the prior art, the present invention provides a garbage degradation heat recovery and utilization device and a composite ecological breeding method using thermal energy.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A garbage degradation heat recovery and utilization device, comprising a heat recovery system, a heat transfer system, and a heat output system. The heat recovery system and the heat output system are connected through the heat transfer system. The heat recovery system includes a plurality of heat collection modules. Each heat collection module includes a landfill base layer and a plurality of installation guide columns. An active heat collection cage is sleeved outside each installation guide column. The bottom ends of each installation guide column extend into the landfill base layer. A stirring impeller is provided on one side of the bottom end of each installation guide column. The orientation of the stirring impeller provided at the bottom end of the previous installation guide column points to the bottom end of the next installation guide column. The orientation of the stirring impeller provided at the bottom end of the last installation guide column points to the bottom end of the first installation guide column. Garbage is landfilled upward from the landfill base layer, and the garbage is divided into an active layer and a degradation layer from bottom to top in sequence. The stirring impellers are all arranged in the active layer above the landfill base layer, and the degradation layer can completely submerge the active heat collection cage. Driven by the rotation of each stirring impeller, the garbage in the active layer can move cyclically along each installation guide column according to the orientation of each stirring impeller. A plurality of heat collection pipes are arranged inside each active heat collection cage. The heat collection pipes extend along the installation guide column to the top end of the installation guide column and are connected to the heat transfer system.

[0008] Preferably, the stirring impeller includes a fixed support and a protective housing. The fixed support is fixedly connected to the bottom end of the installation guide column. A driving motor is provided at the top end of the fixed support. The output shaft of the driving motor is power-connected to the driving impeller through a speed reducer. The protective housing covers the outside of the driving motor and the speed reducer. The output shaft of the speed reducer penetrates through the protective housing, and the orientation of the driving impeller is the orientation of the stirring impeller.

[0009] Preferably, a protective heat exchange flow channel is arranged inside the protective housing, and an impeller heat exchange flow channel is arranged inside the driving impeller. Both the protective heat exchange flow channel and the impeller heat exchange flow channel are communicated with a stirring heat exchange pipe. The stirring heat exchange pipe extends along the installation guide column to the top end of the installation guide column and is connected to the heat transfer system.

[0010] Preferably, landfill sealing plates are provided at the tops of the respective installation guide posts, and adjacent landfill sealing plates are hermetically connected. A one-way intake pipe and a one-way exhaust pipe are provided at the top of the landfill sealing plate, and one-way valves are provided inside the one-way intake pipe and the one-way exhaust pipe; the one-way exhaust pipes are all communicated with a gas processor, and the gas discharged from below the landfill sealing plate can only be input into the gas processor through the respective one-way exhaust pipes and then discharged to the outside after being processed.

[0011] Preferably, the movable heat collection cage includes a plurality of connecting struts, a connecting top plate and a connecting bottom plate, and the connecting top plate and the connecting bottom plate are fixedly connected through the respective connecting struts; both the connecting top plate and the connecting bottom plate are slidably connected to the installation guide posts, and a plurality of counterweight blocks are provided at the bottom end of the connecting bottom plate. Under the action of the gravity of each counterweight block and the reduction of the volume of the degraded garbage below the connecting bottom plate, the movable heat collection cage can drive the heat collection pipe to gradually descend, keeping the degradation layer completely submerging the movable heat collection cage.

[0012] Preferably, the heat collection pipe includes a rigid heat collection pipe and a flexible heat collection pipe. A pipe release device is further provided at the top of the landfill sealing plate. The pipe release device includes a pipe release bracket, a pipe winding rotating shaft is arranged inside the pipe release bracket, a pipe release ratchet is arranged at one end of the pipe winding rotating shaft penetrating out of the pipe release bracket, a pipe release pawl is arranged outside the pipe release bracket, and the pipe release ratchet and the pipe release pawl are connected by a ratchet and pawl; the rigid heat collection pipe is fixed to the connecting strut, and the flexible heat collection pipe penetrates out of the landfill sealing plate from below and is wound around the outside of the pipe winding rotating shaft; during the descent of the movable heat collection cage, under the action of the pipe release ratchet and the pipe release pawl, the flexible heat collection pipe can gradually be disengaged from the outside of the pipe winding rotating shaft.

[0013] Preferably, the landfill base layer includes an anti-seepage base layer, an isolation seepage plate and a drainage pipe. The isolation seepage plate is arranged above the anti-seepage base layer, and the sewage seeping out of the garbage can pass through the isolation seepage plate and be blocked above the anti-seepage base layer. The drainage pipe can guide and discharge the sewage above the anti-seepage base layer; the bottom end of the installation guide post penetrates through the isolation seepage plate and is fixed inside the anti-seepage base layer, and the garbage is landfilled above the isolation seepage plate.

[0014] Preferably, the heat transfer system includes a fluid transfer pipeline and a circulation pump. The fluid transfer pipeline communicates between the respective heat collection pipes and the heat output system, and the circulation pump can provide the power for the liquid to circulate and exchange heat between the heat output system, the fluid transfer pipeline and the respective heat collection pipes.

[0015] Preferably, the heat output system includes a plurality of output heat exchangers, each of which is respectively arranged at each heat energy utilization position, and under the transportation of the heat transport system, the heat energy recovered by the heat recovery system is output from each of the output heat exchangers for utilization.

[0016] The composite ecological farming method using thermal energy uses the above-mentioned garbage degradation heat recovery and utilization device, and includes the following steps: The heat collection modules of the heat recovery system are arranged inside the landfill, and the output heat exchangers of the heat output system are arranged inside the composite ecological breeding area where heat energy needs to be utilized; Each heat collection module is connected to each output heat exchanger through a heat transport system, and the heat energy recovered by the heat recovery system is output to the composite ecological breeding area for utilization under the action of the heat transport system.

[0017] Compared with the prior art, the present invention provides a garbage degradation heat recovery and utilization device and a composite ecological farming method using heat energy, which has the following beneficial effects: 1. The garbage degradation heat recovery and utilization device, by arranging the toggle impeller in the active layer above the landfill base, the degradation layer can completely submerge the active heat collecting cage, and the heat collecting pipe is extended along the installation guide column to the top of the installation guide column and connected to the heat transport system, and the heat output system is arranged at the position where the garbage degradation heat is needed, so as to avoid the abnormal temperature increase caused by the heat dissipation in the garbage degradation process, and can also recycle the heat in the garbage degradation process through each heat collecting module, and in actual use, through the rotation drive of each toggle impeller, the garbage located in the active layer can be circulated along each installation guide column according to the direction of each toggle impeller, and can stably absorb the degradation heat near each heat collecting module in the continuous degradation process of the garbage, and can promote the full mixing between the garbage and the degradation organisms, ensure the stability of the degradation heat generation, and can timely separate the degraded garbage from the each heat collecting pipe, so as to better contact the garbage that is being degraded and generating heat, and can effectively recycle the degradation heat.

[0018] 2. The garbage degradation heat recovery and utilization device is connected to the movable heat exchange tube through the protective heat exchange flow channel and the impeller heat exchange flow channel. The movable heat exchange tube extends along the installation guide column to the top of the installation guide column and is connected to the heat transport system, so that when the driving motor outputs the rotation speed to the driving impeller through the reduction gear box, the garbage inside the active layer is driven by the driving impeller to move along each installation guide column in a cycle, and the garbage and the degrading organisms are fully mixed. At the same time, the degradation heat generated in the contacted garbage can be absorbed through the protective heat exchange flow channel and the impeller heat exchange flow channel, and the degradation heat of the garbage can be more fully recovered.

[0019] 3. The garbage degradation heat recovery and utilization device is hermetically connected between adjacent landfill sealing plates to keep the entire landfill sealed from the outside world. While preventing the degradation heat inside the landfill from escaping, it can also avoid direct gas exchange between the inside and the outside of the landfill. As a result, the gas discharged from below the landfill sealing plate can only be input into the gas processor through each one-way exhaust pipe for treatment and then discharged to the outside. The gas required for garbage degradation is output below the landfill sealing plate through a one-way intake pipe. This can ensure that the harmful gases generated during garbage degradation are treated before being discharged, reducing pollution generation. During the process of garbage degradation in the degradation layer, as the garbage gradually degrades, the volume of the garbage continuously shrinks. Under the gravitational force of each counterweight, the entire movable heat collection cage drives the heat collection pipe to gradually descend, keeping the degradation layer completely submerging the movable heat collection cage. With the maximum heat collection contact area of the heat collection pipe, the utilization efficiency of the garbage degradation heat can be effectively improved.

[0020] 4. Due to the flexibility of the flexible heat collection pipe and the fact that the flexible heat collection pipe passes through the landfill sealing plate from below and is wound around the outside of the pipe winding shaft, during the descent of the movable heat collection cage, under the action of the pipe releasing ratchet and the pipe releasing pawl, the flexible heat collection pipe can gradually disengage from the outside of the pipe winding shaft, maintaining the connection between the rigid heat collection pipe and the flexible heat collection pipe to ensure the heat transfer process between the rigid heat collection pipe and the flexible heat collection pipe. Through the setting of the isolation seepage plate, the sewage seeping out during the garbage degradation process can pass through the isolation seepage plate and be blocked above the anti-seepage base layer. The drainage pipe can guide and discharge the sewage above the anti-seepage base layer, which can more effectively reduce pollution generation during the garbage degradation treatment process and ensure the treatment effect of garbage degradation recovery and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is one of the three-dimensional structure diagrams of the heat collection module of the garbage degradation heat recovery and utilization device of the present invention; Figure 2 is the second three-dimensional structure diagram of the heat collection module of the garbage degradation heat recovery and utilization device of the present invention; Figure 3 is the three-dimensional structure diagram of the landfill base layer and the landfill sealing plate of the garbage degradation heat recovery and utilization device of the present invention; Figure 4 is of the present invention Figure 3 enlarged view of part A; Figure 5 is the three-dimensional structure diagram of the pipe releasing device of the garbage degradation heat recovery and utilization device of the present invention; Figure 6 is of the present invention Figure 5 enlarged view of part B; Figure 7It is a schematic diagram of the assembly structure of the movable heat collecting cage and heat collecting tube of the waste degradation heat recovery and utilization device of the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the impeller of the garbage degradation heat recovery and utilization device of the present invention; Figure 9 This is a schematic diagram of the composition structure of the garbage degradation heat recovery and utilization device of the present invention; Figure 10 It is a feedback control schematic diagram of the waste degradation heat recovery and utilization device of the present invention.

[0022] In the figure: 1. landfill base; 11. anti-seepage base; 12. isolation seepage plate; 13. drainage pipe; 2. installation guide column; 3. movable collector cage; 31. connecting pillar; 32. connecting top plate; 33. connecting bottom plate; 4. moving impeller; 41. fixed support; 42. protective shell; 43. driving motor; 44. reduction gearbox; 45. driving impeller; 5. collector tube; 51. rigid collector tube; 52. flexible collector tube; 6. landfill sealing plate; 61. one-way air inlet pipe; 62. one-way exhaust pipe; 63. gas processor; 64. pipe releaser; 641. pipe release bracket; 642. pipe rotating shaft; 643. pipe release ratchet; 644. pipe release pawl. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] As introduced in the background technology, in order to solve the deficiencies existing in the prior art and the above technical problems, the present application proposes a waste degradation heat recovery device and a composite ecological breeding method utilizing thermal energy.

[0025] Embodiment 1

[0026] See also Figures 1-10, a garbage degradation heat recovery and utilization device, comprising a heat recovery system, a heat transfer system and a heat output system. The heat recovery system and the heat output system are connected through the heat transfer system. The heat recovery system includes a number of heat collection modules. Each heat collection module includes a landfill base layer 1 and a number of installation guide columns 2. An active heat collection cage 3 is sleeved outside each installation guide column 2; the bottom ends of each installation guide column 2 extend into the landfill base layer 1, and a stirring impeller 4 is arranged on one side of the bottom end of each installation guide column 2; the orientation of the stirring impeller 4 arranged at the bottom end of the previous installation guide column 2 points to the bottom end of the next installation guide column 2, and the orientation of the stirring impeller 4 arranged at the bottom end of the last installation guide column 2 points to the bottom end of the first installation guide column 2; garbage is landfilled upward from the landfill base layer 1, and the garbage is divided into an active layer and a degradation layer from bottom to top in sequence. The stirring impellers 4 are all arranged in the active layer above the landfill base layer 1, and the degradation layer can completely submerge the active heat collection cage 3; driven by the rotation of each stirring impeller 4, the garbage in the active layer can move cyclically along each installation guide column 2 according to the orientation of each stirring impeller 4; a number of heat collection pipes 5 are arranged inside each active heat collection cage 3, and the heat collection pipes 5 extend along the installation guide columns 2 to the top ends of the installation guide columns 2 and are connected to the heat transfer system.

[0027] This type of garbage degradation heat recovery and utilization device needs to be installed inside the landfill during the construction of the landfill, and needs to be installed in advance at the bottom of the landfill. A toggle impeller 4 is installed at the bottom of each mounting guide column 2, and the toggle impeller 4 set at the bottom of the previous mounting guide column 2 is directed to the bottom of the next mounting guide column 2, and the toggle impeller 4 set at the bottom of the last mounting guide column 2 is directed to the bottom of the first mounting guide column 2. Then, garbage can be landfilled above the landfill base 1, and then movable heat collecting cages 3 are installed on the outside of each mounting guide column 2, and heat collecting tubes 5 are arranged inside the movable heat collecting cages 3. Then, garbage is continued to be landfilled, and the toggle impeller 4 is set in the movable layer above the landfill base 1. The degradation layer can completely submerge the movable heat collecting cage 3, and the heat collecting tube 5 is extended along the mounting guide column 2 to the top of the mounting guide column 2 The heat output system is arranged at a location where the heat from garbage degradation is needed (such as fish ponds, livestock houses, greenhouses, etc. that need to be kept warm), so as to avoid abnormal temperature rise caused by heat dissipation during garbage degradation. The heat from garbage degradation can also be recycled through each heat collecting module. In actual use, the garbage located in the active layer can be driven by the rotation of each impeller 4 and circulated along each mounting guide column 2 according to the direction of each impeller 4. In the continuous degradation of the garbage, the degradation heat near each heat collecting module can be stably absorbed, while promoting full mixing between the garbage and the degrading organisms, ensuring the stability of the degradation heat generated. The degraded garbage can be separated from the heat collecting tubes 5 in time, so that it can better contact the garbage that is being degraded and generating heat, and can effectively recycle the degradation heat.

[0028] Embodiment 2

[0029] See also Figures 1-10 The difference from the above embodiment is that the toggle impeller 4 includes a fixed support 41 and a protective shell 42, the fixed support 41 is fixedly connected to the bottom end of the mounting guide column 2, a driving motor 43 is arranged on the top of the fixed support 41, and the output shaft of the driving motor 43 is dynamically connected to the driving impeller 45 through a reduction gear box 44; the protective shell 42 is arranged on the outside of the driving motor 43 and the reduction gear box 44, the output shaft of the reduction gear box 44 passes through the protective shell 42, and the direction of the driving impeller 45 is the direction of the toggle impeller 4.

[0030] A protective heat exchange channel is arranged inside the protective shell 42, and an impeller heat exchange channel is arranged inside the driving impeller 45; the protective heat exchange channel and the impeller heat exchange channel are both connected to the movable heat exchange tube, and the movable heat exchange tube extends along the mounting guide column 2 to the top of the mounting guide column 2 and is connected to the heat transport system.

[0031] During specific use, since a protective heat exchange channel is provided inside the protective shell 42, and an impeller heat exchange channel is provided inside the driving impeller 45; the protective heat exchange channel and the impeller heat exchange channel are both connected to the movable heat exchange tube, and the movable heat exchange tube extends along the mounting guide column 2 to the top of the mounting guide column 2 and is connected to the heat transport system (in specific use, the setting method of the movable heat exchange tube is the same as the setting method of the heat collecting tube 5, both of which are arranged inside the movable heat collecting cage 3. The difference is that some of the movable heat exchange tubes outside the movable heat collecting cage 3 are flexible to adapt to the movement of the movable heat collecting cage 3), so that when the driving motor 43 outputs a rotation speed to the driving impeller 45 through the reduction gear box 44, the driving impeller 45 drives the garbage inside the active layer to circulate along each mounting guide column 2, and while fully mixing the garbage with the degrading organisms, the degradation heat generated in the contacted garbage can be absorbed through the protective heat exchange channel and the impeller heat exchange channel, so that the degradation heat of the garbage can be more fully recovered.

[0032] Embodiment 3

[0033] See also Figures 1-10 The difference from the above-mentioned embodiment lies in that a landfill sealing plate 6 is arranged at the top of each mounting guide column 2, and adjacent landfill sealing plates 6 are sealed and connected with each other. A one-way air inlet pipe 61 and a one-way exhaust pipe 62 are arranged at the top of the landfill sealing plate 6, and one-way valves are arranged inside the one-way air inlet pipe 61 and the one-way exhaust pipe 62; the one-way exhaust pipes 62 are connected to the gas processor 63, and the gas discharged from the bottom of the landfill sealing plate 6 can only be input into the gas processor 63 through each one-way exhaust pipe 62 for treatment and then discharged to the outside.

[0034] The movable heat collecting cage 3 comprises a plurality of connecting pillars 31, a connecting top plate 32 and a connecting bottom plate 33. The connecting top plate 32 and the connecting bottom plate 33 are fixedly connected via the connecting pillars 31. The connecting top plate 32 and the connecting bottom plate 33 are both slidably connected to the mounting guide pillars 2. A plurality of counterweights are arranged at the bottom end of the connecting bottom plate 33. Under the action of the gravity of the counterweights and the reduction in the volume of the degraded garbage below the connecting bottom plate 33, the movable heat collecting cage 3 can drive the heat collecting tube 5 to gradually descend, keeping the degradation layer completely submerging the movable heat collecting cage 3.

[0035] Thus, during specific use, by hermetically connecting adjacent landfill sealing plates 6 (the bottom end and side walls of the landfill are separated from the outside through the landfill base layer 1), the sealing between the entire landfill and the outside is maintained. While avoiding the dissipation of the degradation heat inside the landfill, direct gas exchange between the inside and outside of the landfill can be avoided, enabling the gas discharged from below the landfill sealing plate 6 to be input into the gas processor 63 only through each one-way exhaust pipe 62 for treatment and then discharged to the outside. The gas required for garbage degradation is output to below the landfill sealing plate 6 through the one-way intake pipe 61 (a gas pump can be connected to the one-way intake pipe 61), and it can be ensured that the harmful gases generated during garbage degradation are treated before being discharged to reduce pollution generation. During the garbage degradation process in the degradation layer, as the garbage degradation progresses gradually, the volume of the garbage continuously shrinks. Thus, under the gravity of each counterweight, the entire movable heat collection cage 3 drives the heat collection pipe 5 to gradually descend, keeping the degradation layer completely submerging the movable heat collection cage 3, so as to effectively improve the utilization efficiency of the garbage degradation heat through the maximum heat collection contact area of the heat collection pipe 5.

[0036] The heat collection pipe 5 includes a rigid heat collection pipe 51 and a flexible heat collection pipe 52. A pipe releasing device 64 is further provided at the top end of the landfill sealing plate 6. The pipe releasing device 64 includes a pipe releasing support 641. A winding pipe rotating shaft 642 is arranged inside the pipe releasing support 641. One end of the winding pipe rotating shaft 642 passing through the pipe releasing support 641 is provided with a pipe releasing ratchet wheel 643. A pipe releasing pawl 644 is arranged outside the pipe releasing support 641. The pipe releasing ratchet wheel 643 and the pipe releasing pawl 644 are connected by a ratchet and pawl; the rigid heat collection pipe 51 is fixed to the connecting support column 31, and the flexible heat collection pipe 52 passes through the landfill sealing plate 6 from below and is wound outside the winding pipe rotating shaft 642; during the descent of the movable heat collection cage 3, under the action of the pipe releasing ratchet wheel 643 and the pipe releasing pawl 644, the flexible heat collection pipe 52 can gradually be disengaged from the outside of the winding pipe rotating shaft 642.

[0037] The landfill base layer 1 includes an anti-seepage base layer 11, an isolation seepage plate 12, and a drainage pipe 13. The isolation seepage plate 12 is arranged above the anti-seepage base layer 11. The sewage seeping out of the garbage can pass through the isolation seepage plate 12 and be blocked above the anti-seepage base layer 11. The drainage pipe 13 can guide and discharge the sewage above the anti-seepage base layer 11; the bottom end of the installation guide post 2 passes through the isolation seepage plate 12 and is fixed inside the anti-seepage base layer 11, and the garbage is landfilled above the isolation seepage plate 12.

[0038] When in use, due to the flexibility of the flexible heat collecting tube 52 and the fact that the flexible heat collecting tube 52 passes through the landfill sealing plate 6 from below and is then wound around the outside of the tube winding shaft 642, during the descent of the movable heat collecting cage 3, under the action of the tube releasing ratchet 643 and the tube releasing pawl 644, the flexible heat collecting tube 52 can gradually come out from the outside of the tube winding shaft 642, maintaining the connection between the rigid heat collecting tube 51 and the flexible heat collecting tube 52, so as to ensure the heat transfer process between the rigid heat collecting tube 51 and the flexible heat collecting tube 52. Through the setting of the isolation seepage plate 12, the sewage seeping out of the garbage during the degradation process can pass through the isolation seepage plate 12 and be blocked above the anti-seepage base layer 11. The drainage pipe 13 can guide the sewage above the anti-seepage base layer 11 to be discharged, which can more effectively reduce the pollution generated during the garbage degradation process and ensure the treatment effect of garbage degradation and recycling.

[0039] Embodiment 4

[0040] The heat transport system includes a fluid transport pipeline and a circulation pump. The fluid transport pipeline connects each heat collecting tube 5 with the heat output system. The circulation pump can provide power for the liquid to circulate and exchange heat between the heat output system, the fluid transport pipeline and each heat collecting tube 5.

[0041] The heat output system includes several output heat exchangers, each of which is arranged at each heat energy utilization position. Under the transportation of the heat transport system, the heat energy recovered by the heat recovery system is output from each output heat exchanger for utilization.

[0042] Therefore, please refer to Figure 10 , a temperature sensor can be installed at the location where the heat from garbage degradation is needed to detect the temperature of the location where the heat from garbage degradation is needed in real time. For example, when the location where the heat from garbage degradation is needed is an ecological fish pond, a temperature sensor can be installed at the bottom of the fish pond (breeding pond) to monitor the temperature of hot water in real time. When the water temperature is higher than the upper limit of the suitable survival temperature for tropical fish (such as 30°C), the heat exchange regulating valve automatically adjusts the flow of the heat transport system to reduce the heat entering the breeding pond. When the water temperature is lower than the lower limit of the suitable temperature (such as 25°C), the flow of the heat transport system is increased.

[0043] In addition, flow sensors can be set on the heat transfer system loop to adjust the system operation strategy based on the measured operation data to achieve dynamic control of the system and ensure that the water temperature of the breeding pond is stable within the suitable range for the fry. The flow of the heat transfer system is uniformly controlled by setting the PLC control center, integrating the PID adaptive algorithm, and the built-in fuzzy PID controller to collect the water temperature, ambient temperature and heat source temperature data of the fish pond in real time. After analysis and calculation, the circulation pump speed and heat exchange efficiency are dynamically adjusted according to the preset model and logic to make the water temperature control error accuracy ≤±0.5℃. When the water temperature is higher than 30℃, the controller reduces the circulation pump speed and heat exchange efficiency to reduce the heat entering the pool; when it is lower than 25℃, the pump speed and heat exchange efficiency are increased to increase the heat supply. In addition, when the PLC control center detects that the temperature exceeds the set threshold, it triggers sound and light, SMS, and email alarms to notify relevant personnel. Personnel can remotely dispatch through mobile phone apps or monitoring computers to ensure that the water temperature of the breeding pond is stable in the suitable range for tropical fish and protect their living environment.

[0044] Embodiment 5

[0045] The composite ecological farming method using thermal energy uses the garbage degradation heat recovery and utilization device as described in any one of Embodiments 1 to 4, and comprises the following steps: The heat collection modules of the heat recovery system are arranged inside the landfill, and the output heat exchangers of the heat output system are arranged inside the composite ecological breeding area where heat energy is required (the composite ecological breeding area includes fish ponds, livestock houses, planting greenhouses and other locations that need to be insulated, and can also be a combination and collection of the above breeding areas); Each heat collection module is connected to each output heat exchanger through a heat transport system, and the heat energy recovered by the heat recovery system is output to the composite ecological breeding area for utilization under the action of the heat transport system.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste degradation heat recovery and utilization device, comprising a heat recovery system, a heat transport system and a heat output system, wherein the heat recovery system and the heat output system are connected via the heat transport system, and characterized in that: The heat recovery system includes a plurality of heat collection modules, each of which includes a landfill base and a plurality of installation guide columns, and a movable heat collection cage is sleeved on the outer side of each installation guide column; The bottom end of each installation guide column extends into the interior of the landfill base, and a shifting impeller is arranged on one side of the bottom end of each installation guide column; The direction of the shifting impeller arranged at the bottom end of the first mounting guide column points to the bottom end of the second mounting guide column, and the direction of the shifting impeller arranged at the bottom end of the last mounting guide column points to the bottom end of the first mounting guide column; The garbage is landfilled upward from the landfill base, and the garbage is divided into an active layer and a degradation layer from bottom to top, the impellers are arranged in the active layer above the landfill base, and the degradation layer can completely submerge the active heat collecting cage; Under the rotation drive of each of the moving impellers, the garbage located on the active layer can be cyclically moved along each of the mounting guide pillars according to the direction of each of the moving impellers; A plurality of heat collecting tubes are arranged inside each of the movable heat collecting cages. The heat collecting tubes extend along the installation guide column to the top of the installation guide column and are connected to the heat transport system.

2. The waste degradation heat recovery device according to claim 1 is characterized in that: The driving impeller comprises a fixed support and a protective shell, the fixed support is fixedly connected to the bottom end of the mounting guide column, a driving motor is arranged at the top end of the fixed support, and the output shaft of the driving motor is dynamically connected to the driving impeller through a reduction box; The protective housing cover is arranged outside the driving motor and the reduction box, the output shaft of the reduction box passes through the protective housing, and the direction of the driving impeller is the direction of the driving impeller.

3. The waste degradation heat recovery device according to claim 2 is characterized in that: A protective heat exchange flow channel is arranged inside the protective shell, and an impeller heat exchange flow channel is arranged inside the driving impeller; The protective heat exchange flow channel and the impeller heat exchange flow channel are both communicated with the toggle heat exchange tube, and the toggle heat exchange tube extends along the installation guide column to the top of the installation guide column and is connected to the heat transport system.

4. The waste degradation heat recovery device according to claim 1 is characterized in that: A landfill sealing plate is disposed at the top of each installation guide column, and adjacent landfill sealing plates are sealed and connected to each other. A one-way air inlet pipe and a one-way exhaust pipe are disposed at the top of each landfill sealing plate, and one-way valves are disposed inside each of the one-way air inlet pipe and the one-way exhaust pipe. The one-way exhaust pipes are all connected to the gas processor, and the gas exhausted from below the landfill cover plate can only be input into the gas processor through each one-way exhaust pipe for processing and then discharged to the outside.

5. The waste degradation heat recovery device according to claim 4 is characterized in that: The movable heat collecting cage comprises a plurality of connecting pillars, a connecting top plate and a connecting bottom plate, and the connecting top plate and the connecting bottom plate are fixedly connected through each of the connecting pillars; The connecting top plate and the connecting bottom plate are both slidably connected to the mounting guide columns, and a plurality of counterweight blocks are arranged at the bottom end of the connecting bottom plate. Under the action of the gravity of each counterweight block and the reduction in volume of the degraded garbage below the connecting bottom plate, the movable solar collector cage can drive the solar collector tube to gradually descend, keeping the degradation layer completely submerging the movable solar collector cage.

6. The waste degradation heat recovery device according to claim 5 is characterized in that: The heat collecting tubes include rigid heat collecting tubes and flexible heat collecting tubes. A tube placing device is also provided at the top of the landfill sealing plate. The tube placing device includes a tube placing bracket. A tube winding shaft is provided inside the tube placing bracket. A tube placing ratchet is provided at one end of the tube winding shaft that passes through the tube placing bracket. A tube placing pawl is provided outside the tube placing bracket. The tube placing ratchet is connected to the tube placing pawl by a ratchet pawl. The rigid heat collecting pipe is fixed to the connecting support, and the flexible heat collecting pipe passes through the buried sealing plate from below and is wound around the outside of the pipe winding shaft; During the process of the movable heat collecting cage descending, under the action of the tube-releasing ratchet and the tube-releasing pawl, the flexible heat collecting tube can gradually escape from the outside of the tube-winding rotating shaft.

7. The waste degradation heat recovery device according to claim 1 is characterized in that: The landfill base layer includes an impermeable base layer, an isolation seepage plate and a drainage pipe. The isolation seepage plate is arranged above the impermeable base layer. The sewage seeping out of the garbage can pass through the isolation seepage plate and be blocked above the impermeable base layer. The drainage pipe can guide and discharge the sewage above the impermeable base layer. The bottom end of the installation guide column passes through the isolation seepage plate and is fixed inside the anti-seepage base layer, and the garbage is buried above the isolation seepage plate.

8. The waste degradation heat recovery device according to claim 1 is characterized in that: The heat transport system includes a fluid transport pipeline and a circulation pump. The fluid transport pipeline connects each of the heat collecting tubes with the heat output system. The circulation pump can provide power for the liquid to circulate and exchange heat between the heat output system, the fluid transport pipeline and each of the heat collecting tubes.

9. The waste degradation heat recovery device according to claim 8 is characterized in that: The heat output system includes a plurality of output heat exchangers, each of which is respectively arranged at each heat energy utilization position. Under the transportation of the heat transport system, the heat energy recovered by the heat recovery system is output from each of the output heat exchangers for utilization.

10. A composite ecological farming method utilizing thermal energy, characterized in that: The waste degradation heat recovery device as claimed in any one of claims 1 to 9 is used, comprising the following steps: The heat collection modules of the heat recovery system are arranged inside the landfill, and the output heat exchangers of the heat output system are arranged inside the composite ecological breeding area where heat energy needs to be utilized; Each heat collection module is connected to each output heat exchanger through a heat transport system, and the heat energy recovered by the heat recovery system is output to the composite ecological breeding area for utilization under the action of the heat transport system.

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