Biogas waste heat utilization and treatment device

Abstract

The invention relates to the technical field of waste heat recycling, and discloses a biogas waste heat utilization treatment device which comprises a thermoelectric unit and a gas collection unit, the thermoelectric unit comprises a fermentation tank, a thermoelectric conversion mechanism and a water storage tank, a gas collection cylinder is fixedly arranged at the top end of the fermentation tank, and the gas collection unit comprises a hollow pipe movably inserted in the middle of the gas collection cylinder in a penetrating mode. A containing box is fixedly connected to the bottom end of the hollow pipe, flow dividing pipes are distributed on the outer surface of the containing box in an annular array mode, and through openings are formed in the outer surfaces of the flow dividing pipes. According to the device, the sealing plate is used for blocking biogas, the gathering amount of the biogas is increased, the flowing speed of the biogas is increased, the force of the biogas for pushing the fan plate is used for driving the airflow impeller to rotate to serve as driving force to drive the containing box to rotate, and the sheet plate encounters resistance in the rotating process to drive the semicircular block to rotate to open the through opening; fermentation is promoted by automatically adding a small amount of enzyme or microbial solution, so that the output of biogas is increased, and the utilization rate of organic matters in the biogas digester is improved.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery and utilization, and in particular to a biogas waste heat utilization and treatment device. Background Art

[0002] Biogas refers to a combustible gas produced by the fermentation of microorganisms in swamps, sewage ditches or manure pits. The use of biogas is mostly to generate electricity by burning it. In order to avoid energy waste, waste heat utilization devices are usually set up to recover the heat from the high-temperature gases produced by combustion.

[0003] After searching, the Chinese patent with publication number CN107557276A: A device for recycling waste heat from biogas power generation, including a biogas raw material pool, a pretreatment pool is provided on the outer side surface of the biogas raw material pool, a disinfection device is provided on the outer side surface of the pretreatment pool, a fermentation tank is provided on the outer side surface of the disinfection device, the biogas raw material pool is closely connected with the pretreatment pool, an electronic door device is provided between the biogas raw material pool and the pretreatment pool, a gas storage tank is provided on the upper side surface of the fermentation tank, a first heat recovery device is provided on the lower side surface, a thermoelectric linkage system device is provided on the lower side surface of the gas storage tank, a second heat recovery device is provided on the lower side surface of the thermoelectric linkage system device, and a controller is provided on the outer side surface of the biogas raw material pool, which can not only process manure and manure biological waste, but also generate energy, as a valuable substitute for traditional fuels, greatly reducing greenhouse gas emissions, and the biogas slurry and biogas residues produced after anaerobic fermentation can be used as high-efficiency fertilizers for self-use or sale. However, the above technical solution still has the following shortcomings when implemented: Existing biogas utilization devices, while relying on the biogas digester to produce biogas through autonomous fermentation, also focus on making full use of organic matter in the biogas digester. In addition to cleaning out the final deposited material for use as fertilizer, fermentation can be further promoted by adding microorganisms and enzymes. However, the existing addition methods are mostly manual addition, which not only has a large workload, but also is mostly sprayed on the surface, resulting in a low utilization rate. Therefore, it is necessary to design a biogas waste heat utilization and treatment device to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a biogas waste heat utilization treatment device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A biogas waste heat utilization and processing device, comprising a thermoelectric unit and a gas collection unit; Wherein, the thermoelectric unit includes a fermentation tank, a thermoelectric conversion mechanism and a water storage tank, a gas collecting cylinder is fixedly arranged at the top of the fermentation tank, a delivery pipe is fixedly connected to the side of the gas collecting cylinder, an end of the delivery pipe away from the gas collecting cylinder is connected to the thermoelectric conversion mechanism, an exhaust pipe is arranged on the side of the thermoelectric conversion mechanism, an end of the exhaust pipe away from the thermoelectric conversion mechanism is connected to the water storage tank, a conversion box is arranged at the top of the water storage tank, and a discharge pipe is fixedly connected to the top of the conversion box; The gas collecting unit comprises a hollow tube movably inserted in the middle of the gas collecting cylinder, the bottom end of the hollow tube is fixedly connected to a receiving box, the outer surface of the receiving box is provided with a shunt pipe in a circular array, and the outer surface of the shunt pipe is provided with a through opening; Wherein, a power storage component is arranged inside the gas collecting cylinder, and a stirring component is arranged on the outer surface of the receiving box; Wherein, a cleaning unit is arranged inside the water storage tank.

[0006] As a preferred technical solution of the present invention, a vertical rod is movably inserted in the middle of the diverter pipe, the vertical rod extends out of the outer surface of the diverter pipe and is fixedly connected with a plate, a semicircular block is fixedly sleeved in the middle of the vertical rod, the outer surface of the vertical rod located in the diverter pipe is sleeved with a torsion spring, the outer surface of the hollow tube is fixedly sleeved with a wind flow impeller, and a piston cap is provided at the top of the hollow tube.

[0007] As a preferred technical solution of the present invention, the force storage assembly includes a sealing plate fixedly connected to the inner wall of the air collecting cylinder, a ventilation groove is penetrated through the upper surface of the sealing plate, an axle rod is rotatably connected to the inner wall of the ventilation groove, a fan plate is fixedly sleeved on the outer surface of the axle rod, and the fan plate is slidably engaged in the interior of the ventilation groove.

[0008] As a preferred technical solution of the present invention, a counterweight block is fixedly connected to one side of the lower surface of the fan plate, a limit block is fixedly connected to the inner wall of the ventilation groove, the limit block is arranged on the upper side of the fan plate, and the limit block and the counterweight block are distributed on the left and right sides of the shaft.

[0009] As a preferred technical solution of the present invention, a support rod is provided at the bottom end of the receiving box, and the stirring assembly includes a sleeve distributed in a circular array on the outer surface of the support rod, the interior of the sleeve is slidably connected with a stirring rod, the top end of the stirring rod is movablely sleeved at the bottom end of the vertical rod, a spiral blade is fixedly sleeved on the lower part of the outer surface of the stirring rod, the outer surface of the stirring rod located inside the sleeve is fixedly connected with a sliding block, the inner wall of the sleeve is provided with an arc groove, and the sliding block slides inside the arc groove.

[0010] As a preferred technical solution of the present invention, a heat conduction tube is provided inside the water storage tank. One end of the exhaust pipe extending into the water storage tank is fixedly connected to the heat conduction tube. The top end of the heat conduction tube is fixedly connected to an inner tube. The top end of the inner tube is fixedly connected to the bottom of the conversion box. One side of the bottom of the conversion box away from the inner tube is fixedly connected to a water injection pipe. One side of the upper surface of the conversion box away from the discharge pipe is fixedly connected to an external connection pipe.

[0011] As a preferred technical solution of the present invention, the cleaning unit includes a switching component arranged inside the conversion box and a cleaning component arranged inside the heat conduction tube.

[0012] As a preferred technical solution of the present invention, the switching component includes a conversion block rotatably connected inside the conversion box. Two vertical channels are formed through the upper top surface of the conversion block. One of the vertical channels communicates the inner tube and the discharge pipe, and the other vertical channel communicates the water injection pipe and the external connection pipe. A folded channel is formed inside the conversion block.

[0013] As a preferred technical solution of the present invention, the top end of the conversion block is fixedly connected to a top rod. A square groove is formed inside the top rod. A square rod is slidably connected inside the square groove. The top end of the square rod is fixedly connected to a knob. The lower surface of the knob is fixedly connected to a positioning rod. A positioning groove is formed on the upper surface of the conversion box. The positioning rod is slidably clamped inside the positioning groove.

[0014] As a preferred technical solution of the present invention, the cleaning component includes a filter plate fixedly connected to the inner wall of the inner tube. A central rod movably penetrates through the middle of the filter plate. The top end of the central rod is fixedly connected to a water flow impeller. An upper scraping plate is fixedly connected to the upper part of the outer surface of the central rod. A side scraping plate is fixedly connected to the lower part of the outer surface of the central rod. The bottom end of the heat conduction tube is fixedly connected to a sewage discharge pipe.

[0015] The present invention has the following beneficial effects: 1. By setting the gas collection unit and the energy storage component in cooperation, using the sealing plate to block the biogas to increase the convergence amount of biogas, improve the flow rate of biogas, and using the force of the biogas to push the fan plate to drive the air flow impeller to rotate as the driving force to drive the receiving box to rotate. Since the plate will encounter resistance during rotation, it will drive the semi-circular block to rotate and open the through hole. The method of automatically adding a small amount of enzyme or microbial solution is adopted to promote fermentation, thereby increasing the output of biogas and improving the utilization rate of organic matter in the biogas digester; 2. By setting the stirring component, using the rotation of the receiving box to drive the stirring rod and the spiral blade to revolve, and then using the rotation of the shaft rod to drive the stirring rod to rotate and move up and down, the substances deposited at the bottom can be turned up, and at the same time, it also promotes the full contact and fermentation of microorganisms and organic matter; 3. By setting up a switching component and a cleaning component, the conversion block is driven to rotate by turning the knob, thereby changing the connection of the channel so that the external pipe is connected to the internal pipe, and the water flow will enter the inner pipe from the external pipe through the folded channel, so that the inside of the heat transfer pipe can be cleaned by water flow. The water flow drives the water impeller to rotate and drives the upper scraper and the side scraper to rotate, achieving the cleaning effect, and coordinating with the impact of the water flow to eliminate attachments, improve the heat exchange efficiency, and thus improve the utilization rate of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a biogas waste heat utilization and treatment device proposed by the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of a fermentation tank of a biogas waste heat utilization treatment device proposed by the present invention; Figure 3 This is a schematic diagram of the coordination structure of a gas collecting unit and a stirring assembly of a biogas waste heat utilization and treatment device proposed by the present invention; Figure 4 A schematic diagram of the internal structure of a shunt pipe of a biogas waste heat utilization treatment device proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a power storage component of a biogas waste heat utilization and treatment device proposed by the present invention; Figure 6 This is a schematic diagram of the structure of a stirring component of a biogas waste heat utilization and treatment device proposed by the present invention; Figure 7 A schematic diagram of the internal structure of a water storage tank of a biogas waste heat utilization and treatment device proposed by the present invention; Figure 8 A schematic diagram of the structure of a switching component of a biogas waste heat utilization and processing device proposed by the present invention from a first perspective; Figure 9 A schematic diagram of the structure of a switching component of a biogas waste heat utilization and processing device proposed by the present invention from a second perspective; Figure 10 A schematic diagram of the structure of a cleaning component of a biogas waste heat utilization treatment device proposed by the present invention; Figure 11 This is a schematic diagram of the sleeve cutaway structure of a biogas waste heat utilization and treatment device proposed by the present invention.

[0017] In the figure: 101, fermentation tank; 102, gas collecting cylinder; 103, delivery pipe; 104, thermoelectric conversion mechanism; 105, exhaust pipe; 106, water storage tank; 1061, heat conduction pipe; 1062, inner pipe; 1063, water injection pipe; 1064, external connection pipe; 107, conversion box; 108, discharge pipe; 201, hollow pipe; 202, receiving box; 203, shunt pipe; 204, plate; 205, vertical rod; 206, through hole; 207, semi-circular block; 208, torsion spring; 209, air flow impeller; 210, piston cap; 301, sealing plate; 302, ventilation groove; 303, shaft rod; 304, fan plate; 305, counterweight; 306, limiting block; 401, sleeve; 402, stirring rod; 403, spiral blade; 404, slider; 405, arc groove; 501, conversion block; 502, vertical channel; 503, folded channel; 504, ejector rod; 505, square rod; 506, knob; 507, positioning rod; 508, positioning groove; 601, central rod; 602, filter plate; 603, water flow impeller; 604, upper scraping plate; 605, side scraping plate; 606, sewage discharge pipe. Detailed implementation manners

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] Refer to Figures 1 to 11 , a biogas waste heat utilization and treatment device, including a thermoelectric unit and a gas collecting unit; The thermoelectric unit includes a fermentation tank 101, a thermoelectric conversion mechanism 104 and a water storage tank 106. A gas collecting cylinder 102 is fixedly arranged at the top end of the fermentation tank 101. A delivery pipe 103 is fixedly connected to the side of the gas collecting cylinder 102. One end of the delivery pipe 103 away from the gas collecting cylinder 102 is connected to the thermoelectric conversion mechanism 104. An exhaust pipe 105 is arranged on the side of the thermoelectric conversion mechanism 104. One end of the exhaust pipe 105 away from the thermoelectric conversion mechanism 104 is connected to the water storage tank 106. A conversion box 107 is arranged at the top end of the water storage tank 106. A discharge pipe 108 is fixedly connected to the top end of the conversion box 107. The substances stored in the fermentation tank 101 will ferment to produce biogas. The biogas is transported to the thermoelectric conversion mechanism 104 through the delivery pipe 103 for combustion and power generation. The flue gas after combustion enters the water storage tank 106 through the exhaust pipe 105 to heat the water inside it, realizing waste heat utilization. Finally, the flue gas is discharged after being treated by the discharge pipe 108.

[0020] Refer to Figures 2 to 5The gas collecting unit includes a hollow tube 201 movably inserted in the middle of the gas collecting cylinder 102, a receiving box 202 is fixedly connected to the bottom end of the hollow tube 201, a shunt tube 203 is distributed in a ring array on the outer surface of the receiving box 202, a through-hole 206 is opened on the outer surface of the shunt tube 203, a vertical rod 205 is movably inserted in the middle of the shunt tube 203, the vertical rod 205 extends out of the outer surface of the shunt tube 203 and is fixedly connected to a plate 204, a semicircular block 207 is fixedly sleeved in the middle of the vertical rod 205, a torsion spring 208 is sleeved on the outer surface of the vertical rod 205 located in the shunt tube 203, one end of the torsion spring 208 is fixedly connected to the outer surface of the vertical rod 205, and the other end is fixed to the inner wall of the shunt tube 203, a wind flow impeller 209 is fixedly sleeved on the outer surface of the hollow tube 201, and a piston cap 210 is arranged on the top of the hollow tube 201; The discharge of biogas is used to drive the air flow impeller 209 to rotate, and the air flow impeller 209 drives the hollow tube 201 and the receiving box 202 to rotate. The plate 204 surrounding the receiving box 202 will be subject to the resistance of the material in the fermentation tank 101 during the rotation, and then the plate 204 will drive the vertical rod 205 to rotate. During the rotation of the vertical rod 205, a relative displacement will be generated with the shunt pipe 203, thereby squeezing the torsion spring 208, and at the same time driving the semicircular block 207 to rotate so that the port 206 is opened. Under the action of centrifugal force, the solution flows out from the shunt pipe 203 through the port 206, and the enzyme or microbial solution is used to ferment the microorganisms in the fermentation tank 101. The fermentation is promoted by automatically adding a small amount of enzyme or microbial solution, thereby increasing the output of biogas and improving the utilization rate of organic matter in the biogas tank.

[0021] Reference Figure 2 and Figure 5 The inside of the gas collecting cylinder 102 is provided with a power storage component, which includes a sealing plate 301 fixedly connected to the inner wall of the gas collecting cylinder 102, and a ventilation groove 302 is formed on the upper surface of the sealing plate 301, and the inner wall of the ventilation groove 302 is rotatably connected with a shaft 303, and the outer surface of the shaft 303 is fixedly sleeved with a fan plate 304, and the fan plate 304 is slidably connected to the inside of the ventilation groove 302, and a counterweight block 305 is fixedly connected to one side of the lower surface of the fan plate 304, and a limit block 306 is fixedly connected to the inner wall of the ventilation groove 302, and the limit block 306 is arranged on the fan plate 3 04, the limit block 306 and the counterweight block 305 are distributed on the left and right sides of the shaft 303, and a sealing plate 301 is set at the lower part of the gas collecting cylinder 102 for biogas emission to block it. When the amount of biogas gathered increases, the fan plate 304 will be pushed to rotate around the shaft 303. The flipping of the fan plate 304 opens the ventilation groove 302, and the biogas can be discharged quickly. Due to the large amount of biogas, the speed of the airflow will increase, thereby making the power to drive the wind flow impeller 209 stronger, ensuring that the wind flow impeller 209 has sufficient driving force to drive the smooth operation of a series of structures.

[0022] ReferenceFigure 2 , Figure 3 , Figure 6 and Figure 11 , a support rod is provided at the bottom end of the receiving box 202. The stirring assembly includes sleeves 401 that are annularly and arrayedly distributed on the outer surface of the support rod. The stirring assembly includes sleeves 401 that are annularly and arrayedly distributed on the outer surface of the receiving box 202. A stirring rod 402 is slidably connected inside the sleeve 401. The top end of the stirring rod 402 is limited and sleeved on the bottom end of the vertical rod 205. A spiral blade 403 is fixedly sleeved on the lower part of the outer surface of the stirring rod 402. A slider 404 is fixedly connected to the outer surface of the part of the stirring rod 402 located inside the sleeve 401. An arc-shaped groove 405 is provided on the inner wall of the sleeve 401. The slider 404 slides inside the arc-shaped groove 405. While the receiving box 202 rotates, the stirring rod 402 and the spiral blade 403 will rotate around the center of the receiving box 202. The rotation of the vertical rod 205 will drive the stirring rod 402 to rotate inside the sleeve 401, so that the slider 404 will slide along the arc-shaped groove 405, achieving the effect of driving the stirring rod 402 to move up and down. The stirring rod 402 and the spiral blade 403 can rotate around the receiving box 202 while also rotating on their own axes, which can turn up the substances deposited at the bottom and at the same time promote the full contact and fermentation of microorganisms and organic substances.

[0023] Referring to Figures 7 to 10 , a heat conduction pipe 1061 is provided inside the water storage tank 106. One end of the exhaust pipe 105 extending into the water storage tank 106 is fixedly connected to the heat conduction pipe 1061. The top end of the heat conduction pipe 1061 is fixedly connected to an inner pipe 1062. The top end of the inner pipe 1062 is fixedly connected to the bottom of the conversion box 107. A water injection pipe 1063 is fixedly connected to the side of the bottom of the conversion box 107 away from the inner pipe 1062. An outer connection pipe 1064 is fixedly connected to the side of the upper surface of the conversion box 107 away from the discharge pipe 108. The cleaning unit includes a switching assembly provided inside the conversion box 107 and a cleaning assembly provided inside the heat conduction pipe 1061. The outer connection pipe 1064 is connected to a water pipe. When the outer connection pipe 1064 is opened, water flows into the water storage tank 106 through the vertical channel 502 and the water injection pipe 1063; The switching component includes a switching block 501 rotatably connected inside the conversion box 107. Two vertical channels 502 are penetratively opened on the upper top surface of the switching block 501. One of the vertical channels 502 communicates with the inner pipe 1062 and the discharge pipe 108, and the other vertical channel 502 communicates with the water injection pipe 1063 and the external connection pipe 1064. A folded channel 503 is opened inside the switching block 501. A top rod 504 is fixedly connected to the top end of the switching block 501. A square groove is opened inside the top rod 504. A square rod 505 is slidably connected inside the square groove. A knob 506 is fixedly connected to the top end of the square rod 505. A positioning rod 507 is fixedly connected to the lower surface of the knob 506. A positioning groove 508 is opened on the upper surface of the conversion box 107. The positioning rod 507 is slidably clamped inside the positioning groove 508. Pull the knob 506 upward so that the positioning rod 507 slides out of the positioning groove 508, but the square rod 505 still stays inside the top rod 504. Then rotate the knob 506 by 90 degrees and drive the switching block 501 to rotate synchronously. In this way, the originally connected vertical channel 502 will be rotated to a closed position, and the folded channel 503 will communicate with the external connection pipe 1064 and the inner pipe 1062. At this time, open the water valve, and the water flow will enter the inner pipe 1062 from the external connection pipe 1064 through the folded channel 503, completing the transformation of the channel, which is convenient for cleaning the inside of the heat conduction pipe 1061 by using the water flow; The cleaning component includes a filter plate 602 fixedly connected to the inner wall of the inner pipe 1062. A central rod 601 is movably penetrated through the middle of the filter plate 602. A water flow impeller 603 is fixedly connected to the top end of the central rod 601. An upper scraping plate 604 is fixedly connected to the upper part of the outer surface of the central rod 601. A side scraping plate 605 is fixedly connected to the lower part of the outer surface of the central rod 601. A sewage discharge pipe 606 is fixedly connected to the bottom end of the heat conduction pipe 1061. When the water flow enters the heat conduction pipe 1061 from the inner pipe 1062, it will drive the water flow impeller 603 to rotate, and then drive the central rod 601 to rotate synchronously. The upper scraping plate 604 rotates accordingly to clean the filter plate 602, and the side scraping plate 605 cleans the inner wall of the heat conduction pipe 1061. Open the sewage discharge pipe 606, and the sewage together with the attached substances falling off during cleaning will be discharged together, achieving the purpose of cleaning the inner wall of the heat conduction pipe 1061, eliminating the attached substances, improving the heat exchange efficiency, and thus improving the waste heat utilization rate.

[0024] The specific working principle of the present invention is as follows: A biogas waste heat utilization and treatment device proposed by the present invention mainly consists of a fermentation tank 101, a thermoelectric conversion mechanism 104, and a water storage tank 106. The substances stored in the fermentation tank 101 will ferment to produce biogas. The biogas is transported through the delivery pipe 103 to the thermoelectric conversion mechanism 104 for combustion and power generation. The combustion flue gas enters the water storage tank 106 through the exhaust pipe 105 to heat the water inside it, realizing waste heat utilization. Finally, the flue gas is discharged after being processed by the discharge pipe 108; Specifically, a gas collection unit is provided in the fermentation tank 101 of the present invention. After opening the piston cap 210, an enzyme or microbial solution is added into the hollow tube 201, and the solution will be stored in the receiving box 202. The piston cap 210 is closed to prevent impurities from entering. The accumulated biogas is used to drive the air flow impeller 209 to rotate through the power of discharging from the ventilation groove 302. The air flow impeller 209 drives the hollow tube 201 and the receiving box 202 to rotate. The plates 204 surrounding the receiving box 202 will be resisted by the substances in the fermentation tank 101 during the rotation process, and then will push the plates 204 to drive the vertical rod 205 to rotate. During the rotation of the vertical rod 205, the torsion spring 208 will be compressed, and at the same time, the semi-circular block 207 will be driven to rotate to open the through port 206. Under the action of centrifugal force, the solution flows out from the shunt pipe 203 through the through port 206. The enzyme or microbial solution is used to ferment the microorganisms in the fermentation tank 101, and the fermentation is promoted by the method of automatically adding a small amount of enzyme or microbial solution, so as to increase the output of biogas and improve the utilization rate of organic matter in the biogas digester. After the rotation stops, under the action of the resilience of the torsion spring 208, the vertical rod 205 will drive the plate 204 to reset, and at the same time, the semi-circular block 207 will also close the through port 206 again to ensure the indirect release of the solution and fully improve the fermentation utilization of the solution. In addition, a sealing plate 301 is provided at the lower part of the gas collection cylinder 102 for biogas discharge to block. When the accumulated biogas increases, it will push the fan plate 304 to rotate around the shaft rod 303, and the flipping of the fan plate 304 makes the ventilation groove 302 open, and the biogas can be quickly discharged. Since the large amount of biogas will increase the air flow speed, the power driving the air flow impeller 209 will be stronger, ensuring that the air flow impeller 209 has sufficient driving force to drive the smooth operation of a series of structures. After the biogas is discharged, under the action of the gravity of the counterweight 305, the fan plate 304 will fall to close the ventilation groove 302 again to facilitate the continuous accumulation of biogas. And while the receiving box 202 is rotating, the stirring rod 402 and the spiral blade 403 will rotate around the center of the receiving box 202, and the rotation of the vertical rod 205 will drive the stirring rod 402 to rotate inside the sleeve 401, so that the slider 404 slides along the arc groove 405, achieving the effect of driving the stirring rod 402 to move up and down. The stirring rod 402 and the spiral blade 403 can rotate around the receiving box 202 while also rotating around their own axes, which can turn up the substances deposited at the bottom and at the same time promote the full contact and fermentation of microorganisms and organic matter; The external pipe 1064 is connected to a water pipe. When the external pipe 1064 is opened, water flows through the vertical channel 502 and the water injection pipe 1063 and is injected into the water tank 106. After the smoke generated after the biogas is burned enters the heat pipe 1061, the heat is exchanged with the water in the water tank 106 through the heat pipe 1061. When it is necessary to clean the attachments on the inner wall of the heat pipe 1061, the knob 506 is pulled upward to make the positioning rod 507 slide out of the positioning groove 508, but the square rod 505 still stays inside the top rod 504, and then the knob 506 is turned ninety degrees to drive the conversion block 501 to rotate synchronously, so that the originally connected vertical channel 502 will be rotated to a closed position, and the folding channel 503 will connect the external pipe 1064 and the inner pipe 1062, and then downward. Push the knob 506 so that the positioning rod 507 is inserted into the corresponding positioning groove 508. At this time, the water valve is opened, and the water flows from the external pipe 1064 through the folded channel 503 into the inner pipe 1062, completing the channel transformation, so that the inside of the heat pipe 1061 can be cleaned by the water flow. When the water flows from the inner pipe 1062 into the heat pipe 1061, it drives the water impeller 603 to rotate, and then drives the center rod 601 to rotate synchronously, and the upper scraper 604 rotates accordingly and cleans the filter plate 602, and the side scraper 605 cleans the inner wall of the heat pipe 1061. The sewage pipe 606 is opened, and the sewage and the cleaned attachments are discharged together, thereby achieving the purpose of cleaning the inner wall of the heat pipe 1061, eliminating attachments, improving heat exchange efficiency, and thus improving waste heat utilization.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biogas waste heat utilization and treatment device, characterized in that, It includes a thermoelectric unit and a gas collection unit; Among them, the thermoelectric unit includes a fermentation tank (101), a thermoelectric conversion mechanism (104) and a water storage tank (106). A gas collection cylinder (102) is fixedly arranged at the top of the fermentation tank (101). A delivery pipe (103) is fixedly connected to the side of the gas collection cylinder (102). One end of the delivery pipe (103) away from the gas collection cylinder (102) is connected to the thermoelectric conversion mechanism (104). An exhaust pipe (105) is arranged on the side of the thermoelectric conversion mechanism (104). One end of the exhaust pipe (105) away from the thermoelectric conversion mechanism (104) is connected to the water storage tank (106). A conversion box (107) is arranged at the top of the water storage tank (106). A discharge pipe (108) is fixedly connected to the top of the conversion box (107); Among them, the gas collection unit includes a hollow pipe (201) movably inserted into the middle of the gas collection cylinder (102). A receiving box (202) is fixedly connected to the bottom end of the hollow pipe (201). Shunt pipes (203) are annularly and arrayedly distributed on the outer surface of the receiving box (202). Through openings (206) are formed on the outer surface of the shunt pipes (203); Among them, a power storage assembly is arranged inside the gas collection cylinder (102), and a stirring assembly is arranged on the outer surface of the receiving box (202); Among them, a cleaning unit is arranged inside the water storage tank (106).

2. The biogas waste heat utilization and treatment device according to claim 1, characterized in that, A vertical rod (205) is movably inserted into the middle of the shunt pipe (203). A plate (204) is fixedly connected to the outer surface of the vertical rod (205) extending out of the shunt pipe (203). A semi-circular block (207) is fixedly sleeved on the middle of the vertical rod (205). A torsion spring (208) is sleeved on the outer surface of the vertical rod (205) inside the shunt pipe (203). A wind flow impeller (209) is fixedly sleeved on the outer surface of the hollow pipe (201). A piston cap (210) is arranged at the top of the hollow pipe (201).

3. A biogas waste heat utilization and treatment device according to claim 1, characterized in that, The power storage assembly includes a sealing plate (301) fixedly connected to the inner wall of the gas collection cylinder (102). An air vent groove (302) is formed through the upper surface of the sealing plate (301). A shaft rod (303) is rotatably connected to the inner wall of the air vent groove (302). A fan plate (304) is fixedly sleeved on the outer surface of the shaft rod (303). The fan plate (304) is slidably clamped inside the air vent groove (302).

4. The biogas waste heat utilization and treatment device according to claim 3, characterized in that, One side of the lower surface of the fan plate (304) is fixedly connected to a counterweight block (305). A limiting block (306) is fixedly connected to the inner wall of the air vent groove (302). The limiting block (306) is arranged above the fan plate (304). The limiting block (306) and the counterweight block (305) are distributed on the left and right sides of the shaft rod (303).

5. A biogas waste heat utilization and treatment device according to claim 1, characterized in that, A support rod is provided at the bottom end of the receiving box (202). The stirring assembly includes sleeves (401) distributed in an annular array on the outer surface of the support rod. A stirring rod (402) is slidably connected inside the sleeve (401). The top end of the stirring rod (402) is limitedly sleeved on the bottom end of the vertical rod (205). A spiral blade (403) is fixedly sleeved on the lower part of the outer surface of the stirring rod (402). A slider (404) is fixedly connected to the outer surface of the part of the stirring rod (402) located inside the sleeve (401). An arc-shaped groove (405) is formed in the inner wall of the sleeve (401), and the slider (404) slides inside the arc-shaped groove (405).

6. A biogas waste heat utilization and treatment device according to claim 1, characterized in that, A heat conduction pipe (1061) is provided inside the water storage tank (106). One end of the exhaust pipe (105) extending into the water storage tank (106) is fixedly connected to the heat conduction pipe (1061). The top end of the heat conduction pipe (1061) is fixedly connected to an inner pipe (1062). The top end of the inner pipe (1062) is fixedly connected to the bottom of the conversion box (107). A water injection pipe (1063) is fixedly connected to one side of the bottom of the conversion box (107) away from the inner pipe (1062). An external connection pipe (1064) is fixedly connected to one side of the upper surface of the conversion box (107) away from the discharge pipe (108).

7. A biogas waste heat utilization and treatment device according to claim 6, characterized in that, The cleaning unit includes a switching assembly provided inside the conversion box (107) and a cleaning assembly provided inside the heat conduction pipe (1061).

8. The biogas waste heat utilization and treatment device according to claim 7, characterized in that, The switching assembly includes a conversion block (501) rotatably connected inside the conversion box (107). Two vertical channels (502) are formed through the upper top surface of the conversion block (501). One of the vertical channels (502) communicates the inner pipe (1062) and the discharge pipe (108), and the other vertical channel (502) communicates the water injection pipe (1063) and the external connection pipe (1064). A folded channel (503) is formed inside the conversion block (501).

9. A biogas waste heat utilization and treatment device according to claim 8, characterized in that, A top rod (504) is fixedly connected to the top end of the conversion block (501). A square groove is formed inside the top rod (504). A square rod (505) is slidably connected inside the square groove. The top end of the square rod (505) is fixedly connected to a knob (506). A positioning rod (507) is fixedly connected to the lower surface of the knob (506). A positioning groove (508) is formed in the upper surface of the conversion box (107), and the positioning rod (507) is slidably clamped inside the positioning groove (508).

10. A biogas waste heat utilization and treatment device according to claim 7, characterized in that, The cleaning assembly includes a filter plate (602) fixedly connected to the inner wall of the inner pipe (1062). A central rod (601) movably penetrates through the middle of the filter plate (602). A water flow impeller (603) is fixedly connected to the top end of the central rod (601). An upper scraping plate (604) is fixedly connected to the upper part of the outer surface of the central rod (601). A side scraping plate (605) is fixedly connected to the lower part of the outer surface of the central rod (601). A sewage pipe (606) is fixedly connected to the bottom end of the heat conduction pipe (1061).

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