A heating device and a heating method using the waste heat of a thermal power plant

Abstract

The present invention relates to the technical field of waste heat heating, and discloses a waste heat heating device and a heating method using the waste heat of a thermal power plant, including a housing. An air inlet pipe and an air outlet pipe are respectively fixedly communicated with the left side and the right side of the housing, and a heat exchange pipe arranged in a serpentine shape is installed on the inner wall of the housing; a drainage mechanism is arranged at the bottom of the housing, a filtering mechanism is arranged on the inner wall of the housing, and an adsorption mechanism is arranged on the inner wall of the housing; the drainage mechanism includes a motor, a rotating rod, a sleeve, a guide rod, a screw rod, a roller, a water scraping plate, a drain pipe, a water collecting tank and a water outlet pipe. The motor is fixedly connected to the right side of the housing, and the rotating rod is fixedly connected to the output end of the motor. In the present invention, the water scraping plate will scrape off the condensed water on the surface of the heat exchange pipe, preventing the condensed water from adhering to the surface of the heat exchange pipe and thus affecting its heat exchange effect. At the same time, the falling condensed water will enter the drain pipe and be discharged into the water collecting tank, preventing the condensed water from accumulating in the housing.

Description

Technical Field

[0001] The present invention relates to the technical field of waste heat heating, and particularly to a heating device and a heating method using the waste heat of a thermal power plant. Background Art

[0002] Waste heat heating is a technology that uses the waste heat generated in the industrial production process for heating. By recovering and utilizing this heat, energy consumption and operating costs can be reduced, while environmental pollution can be reduced. At the same time, the heat in the waste gas is transferred to the water through heat exchange and heated, so that the heated water can be used for indoor heating.

[0003] The patent with the publication number CN218846958U discloses a waste heat recovery and utilization structure and device of a thermal power plant, which relates to the field of waste heat recovery and utilization devices of thermal power plants, including a filtering component, a recovery component, and a gas turbine component; one end of the filtering component is connected to the recovery component, and the other end of the filtering component is connected to the gas turbine component. When the high-temperature flue gas is discharged into the spiral heat exchange tube from the second exhaust pipe, the spiral heat exchange tube can transfer the heat in the flue gas into the water in the heat exchange tank, which can play a role in heating the low-temperature raw water. At the same time, it can also quickly cool down the flue gas. With the cooperation of the intake pipe and the drain valve structure, the cooled flue gas can be transported into the internal combustion furnace, and the liquefied water generated during the cooling of the flue gas can be discharged outwards. Through the above technical solution, it is convenient to recover and utilize the waste heat of the high-temperature flue gas discharged by the gas turbine of the thermal power plant, and at the same time, it can prevent and control the risks brought by the emission of toxic and harmful high-temperature flue gas. However, when this device conducts heat exchange, condensate will be generated on the heat exchange tube due to the temperature difference, and the attachment of the cooling water will affect the heat exchange effect of the heat exchange tube to a certain extent. After long-term use, the condensate will accumulate in the device, which is likely to affect the production work of the device. Therefore, a heating device and a heating method using the waste heat of a thermal power plant are proposed to solve the above-mentioned problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a heating device and a heating method using the waste heat of a thermal power plant for the deficiencies in the above-mentioned prior art.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a heating device using the waste heat of a thermal power plant, including a housing. An air inlet pipe and an air outlet pipe are fixedly communicated with the left side and the right side of the housing respectively. A heat exchange pipe arranged in a snake shape is installed on the inner wall of the housing; a drainage mechanism is arranged at the bottom of the housing, a filtering mechanism is arranged on the inner wall of the housing, and an adsorption mechanism is arranged on the inner wall of the housing; the drainage mechanism includes a motor, a rotating rod, a sleeve, a guide rod, a screw rod, a roller, a water scraping plate, a drain pipe, a water collecting tank and a water outlet pipe. The motor is fixedly connected to the right side of the housing, the rotating rod is fixedly connected to the output end of the motor, the sleeve is movably connected to the circumferential surface of the rotating rod, the guide rod is fixedly connected to the top of the sleeve, the screw rod is rotatably connected to the inner wall of the housing, the roller is fixedly connected to the circumferential surface of the screw rod, the water scraping plate is movably connected to the circumferential surface of the screw rod, the drain pipe is fixedly communicated with the bottom of the housing, the water collecting tank is installed at the bottom of the housing, and the water outlet pipe is fixedly communicated with the left side of the water collecting tank; cross-shaped spiral grooves are formed on the surface of the rotating rod, a clamping block is arranged on the inner wall of the sleeve, and the clamping block is located in the cross-shaped spiral grooves. The circumferential surface of the guide rod is slidably connected to the inner wall of the right side of the housing, and the circumferential surface of the rotating rod is rotatably connected to the inner wall of the right side of the housing; the inner wall of the water scraping plate is in contact with the circumferential surface of the heat exchange pipe, cross-shaped spiral grooves are formed on the surface of the screw rod, a clamping block is arranged on the inner wall of the water scraping plate, and the clamping block is located in the cross-shaped spiral grooves. The side of the drain pipe away from the housing is fixedly communicated with the side of the water collecting tank away from the water outlet pipe. Exhaust gas enters the housing from the air inlet pipe, contacts the heat exchange pipe in the housing, and discharges from the air outlet pipe after heat exchange with the water in the heat exchange pipe. During heat exchange, condensed water will be generated on the surface of the heat exchange pipe. At this time, the motor will start and drive the sleeve to move left and right reciprocally under the guidance of the guide rod through the cross-shaped spiral grooves on the surface. The sleeve drives the roller in contact with it to rotate through friction, the roller drives the screw rod to rotate, and the screw rod drives the water scraping plate guided by the housing to reciprocate through the cross-shaped spiral grooves on the surface. The water scraping plate will scrape off the condensed water on the surface of the heat exchange pipe to prevent the condensed water from adhering to the surface of the heat exchange pipe and thus affecting its heat exchange effect. At the same time, the fallen condensed water will enter the drain pipe and be discharged into the water collecting tank to prevent the condensed water from accumulating in the housing. At the same time, the sponge arranged in the drain pipe will absorb water. When it is saturated with water, it will seep into the water collecting tank. The sponge full of water can effectively prevent the exhaust gas from being discharged from the drain pipe, thereby preventing the pollution of the surrounding environment.

[0006] Preferably, the filtering mechanism includes a limit block, a filter plate, a fixing strip, a scraper, a reciprocating lead screw, a moving block, a first push rod, a first slider, and a pressing rod. The limit block is fixedly connected to the inner wall of the housing, the filter plate is fixedly installed on the inner wall of the limit block, the fixing strip is fixedly connected to the inner wall of the limit block, the scraper is fixedly connected to the left end of the rotating rod, the reciprocating lead screw is fixedly connected to the right side of the fixing strip, the moving block is movably connected to the circumferential surface of the reciprocating lead screw, the first push rod is rotatably connected to the surface of the moving block through a torsion spring, the first slider is rotatably connected to the end of the first push rod away from the moving block, and the pressing rod is fixedly connected to the surface of the first slider. The filtering mechanism further includes a moving disk, a second push rod, a second slider, an inclined plate, an air inlet pipe, an air outlet pipe, and a baffle. The moving disk is rotatably connected to the left side of the moving block, the second push rod is rotatably connected to the surface of the moving disk through a torsion spring, the second slider is rotatably connected to the end of the second push rod away from the moving disk, the inclined plate is fixedly connected to the inner wall of the air inlet pipe, the baffle is fixedly connected to the inner wall of the limit block, the air inlet pipe is fixedly communicated with the inner wall of the top of the housing, and the air outlet pipe is fixedly communicated with the inner wall of the bottom of the housing.One end of the intake pipe away from the housing is fixedly communicated with the circumferential surface of the air inlet pipe. One end of the outlet pipe away from the housing is fixedly communicated with the top of the drain pipe. The circumferential surface of the intake pipe contacts the inner wall of the limit block. The circumferential surface of the outlet pipe contacts the inner wall of the limit block. The first slider is slidably connected to the inner wall on the left side of the scraper. The right end of the reciprocating lead screw is rotatably connected to the inner wall on the left side of the scraper. The second slider is slidably connected to the right side of the fixed strip. The inner wall of the moving disk contacts the circumferential surface of the reciprocating lead screw. The right side of the scraper contacts the left side of the filter plate. When the waste gas enters the housing, it will pass through the filter plate. The filter plate will filter the dust in the gas to prevent the dust from adhering to the surface of the heat exchange tube subsequently. At the same time, when the rotating rod rotates, it will drive the scraper to rotate. The scraper will scrape the dust on the left side of the filter plate and guide it into the inner wall on the left side of the scraper through the inclined surface of the scraper itself. The scraper drives the first slider to rotate. The first slider drives the first push rod to rotate. The first push rod drives the moving block to rotate. The moving block rotates on the surface of the reciprocating lead screw. However, the reciprocating lead screw is fixed on the fixed strip and does not rotate. Therefore, the moving block rotates relative to the reciprocating lead screw and drives the moving block to move left and right reciprocally through the cross-shaped spiral groove. The moving block will drive the first slider to move in the reverse direction through the first push rod. The first slider drives the pressure rod to move. The pressure rod will push the dust inside the scraper to move away from the rotation center of the scraper. A small amount of waste gas will be guided by the inclined plate. The gas enters the housing through the intake pipe and blows on the dust on the inner wall of the scraper, causing the dust to separate from the scraper. When the scraper drives the dust to rotate to the baffle, the baffle will block the blown air from pressing on the dust on the inner wall of the scraper, causing the dust to enter the outlet pipe and be discharged outside the housing along with a small amount of gas, preventing the dust from accumulating in the scraper and affecting the subsequent cleaning of the dust. At the same time, the discharged gas and dust will enter the drain pipe. Since there is a sponge on the right side of the drain pipe where the outlet pipe is located, the gas and dust cannot move to the right side of the drain pipe, causing the gas to drive the dust to contact the water in the drain pipe and flow into the water collection tank, preventing the waste gas and dust from being directly discharged into the surrounding environment. When the water and dust collected in the water collection tank overflow to the outlet pipe, the water will drive the dust to be discharged through the outlet pipe.;

[0007] Preferably, the adsorption mechanism includes a filter disk, a rotating ring, a convex strip, a transmission plate, a rotating plate, a guiding plate, a moving rod, an L-shaped rod, a transmission rod and a guiding groove. The filter disk is installed on the inner wall of the limiting block. The rotating ring is rotatably connected to the inner wall of the filter disk. The convex strip is fixedly connected to the inner wall of the rotating ring. The transmission plate is fixedly connected to the circumferential surface of the rotating rod. The rotating plate is rotatably connected to the inner wall of the transmission plate. The guiding plate is fixedly connected to the right side of the second slider. The moving rod is slidably connected to the inner wall of the guiding plate through a connecting rod. The L-shaped rod is fixedly connected to the surface of the moving rod. The transmission rod is fixedly connected to the surface of the L-shaped rod. The guiding groove is formed in the circumferential surface of the rotating ring. One end of the transmission rod away from the L-shaped rod contacts the inner wall of the guiding groove. The L-shaped rod is slidably connected to the inner wall of the filter disk. The circumferential surface of the transmission rod is slidably connected to the inner wall of the filter disk. When the moving block moves, it drives the moving disk to slide on the reciprocating lead screw. The moving disk drives the second slider to reciprocate through the second push rod. The second slider drives the guiding plate to move. The guiding plate pushes the moving rod guided by the L-shaped rod to move through the inclined groove. The moving rod pushes the L-shaped rod to move. The L-shaped rod drives the transmission rod to move. The transmission rod moves in the guiding groove and drives the rotating ring to rotate in the filter disk through the guiding groove. When the waste gas after filtering dust passes through the filter disk, the adsorbent in the filter disk will adsorb the corrosive gas in the air, preventing the corrosive gas from contacting the heat exchange tube and thus causing corrosion to it, which will affect its service life. When the rotating ring rotates, it will drive the convex strip to rotate. The convex strip will turn the adsorbent in the filter disk, increasing the contact area between the adsorbent and the air, thereby improving the adsorption effect. At the same time, the rotating rod drives the transmission plate to rotate. The transmission plate drives the rotating plate to rotate. The rotating plate will contact the reciprocating and rotating convex strip, causing the rotating plate to rotate on the inner wall of the transmission plate, and further turning the adsorbent by the rotating plate.

[0008] A heating method for a heating device using the waste heat of a thermal power plant includes the following steps:

[0009] Step 1: The waste gas enters the shell from the air inlet pipe, contacts the heat exchange tubes in the shell, and exchanges heat with the water in the heat exchange tubes and then is discharged from the air outlet pipe.

[0010] Step 2: When heat exchange is carried out, condensed water will be generated on the surface of the heat exchange tubes. At this time, the motor will start and drive the sleeve to move left and right reciprocally under the guidance of the guiding rod through the cross-shaped spiral grooves on the surface.

[0011] Step 3: The sleeve drives the roller in contact with it to rotate through friction. The roller drives the screw rod to rotate. The screw rod drives the wiper plate guided by the shell to move reciprocally through the cross-shaped spiral grooves on the surface. The wiper plate will scrape off the condensed water on the surface of the heat exchange tubes.

[0012] Step 4: The fallen condensed water will enter the drain pipe and be discharged into the water collecting tank to prevent the condensed water from accumulating in the shell.

[0013] The present invention adopts the above technical solutions and can bring the following beneficial effects:

[0014] 1. For the heating device and heating method using the waste heat of a thermal power plant, through the coordinated operation among the housing, the air inlet pipe, the air outlet pipe, the heat exchange pipe, the motor, the rotating rod, the sleeve, the guide rod, the screw rod, the roller, the wiper, the drain pipe, the water collecting tank, and the water outlet pipe, the wiper will scrape off the condensed water on the surface of the heat exchange pipe, preventing the condensed water from adhering to the surface of the heat exchange pipe and thus affecting its heat exchange effect. At the same time, the fallen condensed water will enter the drain pipe and be discharged into the water collecting tank, preventing the condensed water from accumulating in the housing.

[0015] 2. For the heating device and heating method using the waste heat of a thermal power plant, through the coordinated operation among the limiting block, the filter plate, the fixing strip, the scraper, the reciprocating lead screw, the moving block, the first push rod, the first slider, the pressing rod, the moving disk, the second push rod, the second slider, the inclined plate, the air inlet pipe, the air outlet pipe, and the baffle, the filter plate will filter the dust in the gas, preventing the dust from adhering to the surface of the heat exchange pipe subsequently. At the same time, the pressing rod will push the dust inside the scraper to move away from the rotation center of the scraper, and the baffle will block the blown air from pressing on the dust on the inner wall of the scraper, causing the dust to enter the air outlet pipe and be discharged outside the housing along with a small amount of gas, preventing the dust from accumulating in the scraper and thus affecting the subsequent cleaning of the dust.

[0016] 3. For the heating device and heating method using the waste heat of a thermal power plant, through the coordinated operation among the filter disk, the rotating ring, the convex strip, the transmission plate, the rotating plate, the guide plate, the moving rod, the L-shaped rod, the transmission rod, and the guide groove, when the waste gas after filtering dust passes through the filter disk, the adsorbent in the filter disk will adsorb the corrosive gas in the air, preventing the corrosive gas from contacting the heat exchange pipe and thus causing corrosion to it, and further affecting its service life. When the rotating ring rotates, it will drive the convex strip to rotate, and the convex strip will turn over the adsorbent in the filter disk, increasing the contact area between the adsorbent and the air, and thus improving the adsorption effect. At the same time, the rotating rod drives the transmission plate to rotate, the transmission plate drives the rotating plate to rotate, and the rotating plate will contact the reciprocatingly rotating convex strip, causing the rotating plate to rotate inside the transmission plate, and further turning over the adsorbent by the rotating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a half-sectional view of the housing structure of the present invention;

[0019] Figure 3 is a schematic diagram of the sleeve structure of the present invention;

[0020] Figure 4 is a schematic diagram of the water collecting tank structure of the present invention;

[0021] Figure 5 Half-sectional view of the limit block structure of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged view of the structure at position A in the present invention;

[0023] Figure 7 Schematic diagram of the L-shaped rod structure of the present invention;

[0024] Figure 8 Schematic diagram of the swivel structure of the present invention.

[0025] In the figure: 1, housing; 2, air inlet pipe; 3, air outlet pipe; 4, heat exchange pipe; 5, drainage mechanism; 51, motor; 52, rotating rod; 53, sleeve; 54, guide rod; 55, screw rod; 56, roller; 57, wiper blade; 58, drain pipe; 59, water collection tank; 510, water outlet pipe; 6, filtering mechanism; 61, limit block; 62, filter plate; 63, fixing strip; 64, scraper; 65, reciprocating lead screw; 66, moving block; 67, push rod 1; 68, slider 1; 69, pressing rod; 610, moving disk; 611, push rod 2; 612, slider 2; 613, inclined plate; 614, air inlet pipe; 615, air outlet pipe; 616, baffle; 7, adsorption mechanism; 71, filter disk; 72, swivel; 73, convex strip; 74, transmission plate; 75, rotating plate; 76, guide plate; 77, moving rod; 78, L-shaped rod; 79, transmission rod; 710, guide groove. Detailed implementation manners

[0026] 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 of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-8, an embodiment of the present invention is: a heating device using the waste heat of a thermal power plant, including a housing 1. An air inlet pipe 2 and an air outlet pipe 3 are fixedly communicated with the left and right sides of the housing 1 respectively. A heat exchange pipe 4 arranged in a serpentine shape is installed on the inner wall of the housing 1; a drainage mechanism 5 is arranged at the bottom of the housing 1, a filtering mechanism 6 is arranged on the inner wall of the housing 1, and an adsorption mechanism 7 is arranged on the inner wall of the housing 1; the drainage mechanism 5 includes a motor 51, a rotating rod 52, a sleeve 53, a guide rod 54, a screw rod 55, a roller 56, a wiper blade 57, a drain pipe 58, a water collection tank 59 and a water outlet pipe 510. The motor 51 is fixedly connected to the right side of the housing 1, the rotating rod 52 is fixedly connected to the output end of the motor 51, the sleeve 53 is movably connected to the circumferential surface of the rotating rod 52, the guide rod 54 is fixedly connected to the top of the sleeve 53, the screw rod 55 is rotatably connected to the inner wall of the housing 1, the roller 56 is fixedly connected to the circumferential surface of the screw rod 55, the wiper blade 57 is movably connected to the circumferential surface of the screw rod 55, the drain pipe 58 is fixedly communicated with the bottom of the housing 1, the water collection tank 59 is installed at the bottom of the housing 1, and the water outlet pipe 510 is fixedly communicated with the left side of the water collection tank 59. Exhaust gas enters the housing 1 from the air inlet pipe 2, contacts the heat exchange pipe 4 in the housing 1, and discharges from the air outlet pipe 3 after heat exchange with the water in the heat exchange pipe 4. During heat exchange, condensed water will be generated on the surface of the heat exchange pipe 4. At this time, the motor 51 will start and drive the sleeve 53 to move left and right reciprocally under the guidance of the guide rod 54 through the cross-shaped spiral groove on the surface. The sleeve 53 drives the roller 56 in contact with it to rotate through friction. The roller 56 drives the screw rod 55 to rotate. The screw rod 55 drives the wiper blade 57 guided by the housing 1 to move reciprocally through the cross-shaped spiral groove on the surface. The wiper blade 57 will scrape off the condensed water on the surface of the heat exchange pipe 4 to prevent the condensed water from adhering to the surface of the heat exchange pipe 4 and thus affecting its heat exchange effect; the surface of the rotating rod 52 is provided with a cross-shaped spiral groove, the inner wall of the sleeve 53 is provided with a block, and the block is located in the cross-shaped spiral groove. The circumferential surface of the guide rod 54 is slidably connected to the inner wall of the right side of the housing 1, and the circumferential surface of the rotating rod 52 is rotatably connected to the inner wall of the right side of the housing 1; the inner wall of the wiper blade 57 is in contact with the circumferential surface of the heat exchange pipe 4. The surface of the screw rod 55 is provided with a cross-shaped spiral groove, the inner wall of the wiper blade 57 is provided with a block, and the block is located in the cross-shaped spiral groove. One side of the drain pipe 58 away from the housing 1 is fixedly communicated with one side of the water collection tank 59 away from the water outlet pipe 510. The falling condensed water will enter the drain pipe 58 and be discharged into the water collection tank 59 to prevent the condensed water from accumulating in the housing 1. At the same time, the sponge arranged in the drain pipe 58 will absorb water. When it is saturated with water, it will seep into the water collection tank 59. The sponge full of water can effectively prevent the exhaust gas from discharging from the drain pipe 58, thereby preventing the pollution of the surrounding environment. Anti-slip strips are provided on the surfaces of both the roller 56 and the sleeve 53 to ensure that there is sufficient friction when the sleeve 53 moves to drive the roller 56 to rotate.

[0028] The filtering mechanism 6 includes a limit block 61, a filter plate 62, a fixing strip 63, a scraping plate 64, a reciprocating lead screw 65, a moving block 66, a first push rod 67, a first slider 68 and a pressing rod 69. The limit block 61 is fixedly connected to the inner wall of the housing 1, the filter plate 62 is fixedly installed on the inner wall of the limit block 61, the fixing strip 63 is fixedly connected to the inner wall of the limit block 61, the scraping plate 64 is fixedly connected to the left end of the rotating rod 52, the reciprocating lead screw 65 is fixedly connected to the right side of the fixing strip 63, the moving block 66 is movably connected to the circumferential surface of the reciprocating lead screw 65, the first push rod 67 is rotatably connected to the surface of the moving block 66 through a torsion spring, the first slider 68 is rotatably connected to the end of the first push rod 67 away from the moving block 66, and the pressing rod 69 is fixedly connected to the surface of the first slider 68. When the waste gas enters the housing 1, it will pass through the filter plate 62. The filter plate 62 will filter the dust in the gas to prevent the dust from adhering to the surface of the heat exchange tube 4 subsequently. At the same time, when the rotating rod 52 rotates, it will drive the scraping plate 64 to rotate. The scraping plate 64 will scrape off the dust on the left side of the filter plate 62 and guide it to the inner wall on the left side of the scraping plate 64 through the inclined surface of the scraping plate 64 itself. The scraping plate 64 drives the first slider 68 to rotate, the first slider 68 drives the first push rod 67 to rotate, the first push rod 67 drives the moving block 66 to rotate, and the moving block 66 rotates on the surface of the reciprocating lead screw 65. However, the reciprocating lead screw 65 is fixed on the fixing strip 63 and does not rotate. Therefore, the moving block 66 and the reciprocating lead screw 65 rotate relative to each other, and the moving block 66 is driven to move left and right reciprocally through the crossed spiral groove. The moving block 66 will drive the first slider 68 to move in the reverse direction through the first push rod 67, the first slider 68 drives the pressing rod 69 to move, and the pressing rod 69 will push the dust inside the scraping plate 64 to move away from the rotation center of the scraping plate 64; The filtering mechanism 6 further includes a moving disk 610, a second push rod 611, a second slider 612, an inclined plate 613, an air inlet pipe 614, an air outlet pipe 615 and a baffle 616. The moving disk 610 is rotatably connected to the left side of the moving block 66, the second push rod 611 is rotatably connected to the surface of the moving disk 610 through a torsion spring, the second slider 612 is rotatably connected to the end of the second push rod 611 away from the moving disk 610, the inclined plate 613 is fixedly connected to the inner wall of the air inlet pipe 2, the baffle 616 is fixedly connected to the inner wall of the limit block 61, the air inlet pipe 614 is fixedly communicated with the inner wall of the top of the housing 1, and the air outlet pipe 615 is fixedly communicated with the inner wall of the bottom of the housing 1;One end of the air inlet pipe 614 away from the housing 1 is fixedly communicated with the circumferential surface of the air inlet duct 2, and one end of the air outlet pipe 615 away from the housing 1 is fixedly communicated with the top of the drain pipe 58. The circumferential surface of the air inlet pipe 614 contacts the inner wall of the limiting block 61, and the circumferential surface of the air outlet pipe 615 contacts the inner wall of the limiting block 61. The first slider 68 is slidably connected to the inner wall on the left side of the scraping plate 64, and the right end of the reciprocating lead screw 65 is rotatably connected to the inner wall on the left side of the scraping plate 64. The second slider 612 is slidably connected to the right side of the fixing strip 63. The inner wall of the moving disk 610 contacts the circumferential surface of the reciprocating lead screw 65. The right side of the scraping plate 64 contacts the left side of the filter plate 62. A small amount of waste gas will be guided by the inclined plate 613. The gas enters the housing 1 through the air inlet pipe 614 and blows the dust on the inner wall of the scraping plate 64, so that the dust is separated from the scraping plate 64. When the scraping plate 64 drives the dust to rotate to the baffle 616, the baffle 616 will block the blown air and press it on the dust on the inner wall of the scraping plate 64, so that the dust follows a small amount of gas into the air outlet pipe 615 and is discharged outside the housing 1, preventing the dust from accumulating in the scraping plate 64 and thus affecting the subsequent cleaning of the dust. At the same time, the discharged gas and dust will enter the drain pipe 58. Since there is a sponge on the right side of the drain pipe 58 where the air outlet pipe 615 is located, the gas and dust cannot move to the right side of the drain pipe 58, so that the gas drives the dust to contact the water in the drain pipe 58 and flow into the water collecting tank 59, preventing the waste gas and dust from being directly discharged into the surrounding environment. When the water and dust collected in the water collecting tank 59 overflow to the water outlet pipe 510, the water will drive the dust to be discharged through the water outlet pipe 510.;

[0029] Working principle: The waste gas enters the housing 1 from the air inlet duct 2, contacts the heat exchange tube 4 in the housing 1, and exchanges heat with the water in the heat exchange tube 4 and then is discharged from the air outlet duct 3. When heat exchange is carried out, condensed water will be generated on the surface of the heat exchange tube 4. At this time, the motor 51 will start and drive the sleeve 53 to move left and right reciprocally under the guidance of the guide rod 54 through the cross-shaped spiral grooves on the surface. The sleeve 53 drives the roller 56 in contact with it to rotate through friction. The roller 56 drives the screw rod 55 to rotate. The screw rod 55 drives the water scraping plate 57 guided by the housing 1 to move reciprocally through the cross-shaped spiral grooves on the surface. The water scraping plate 57 will scrape off the condensed water on the surface of the heat exchange tube 4, preventing the condensed water from adhering to the surface of the heat exchange tube 4 and thus affecting its heat exchange effect. At the same time, the fallen condensed water will enter the drain pipe 58 and be discharged into the water collecting tank 59, preventing the condensed water from accumulating in the housing 1. At the same time, the sponge provided in the drain pipe 58 will absorb water. When it is saturated with water, it will seep into the water collecting tank 59. The sponge full of water can effectively prevent the waste gas from being discharged from the drain pipe 58, thus preventing the pollution of the surrounding environment;

[0030] When the exhaust gas enters the housing 1, it will pass through the filter plate 62. The filter plate 62 will filter the dust in the gas to prevent the dust from adhering to the surface of the heat exchange tube 4 subsequently. At the same time, when the rotating rod 52 rotates, it will drive the scraper 64 to rotate. The scraper 64 will scrape off the dust on the left side of the filter plate 62 and guide it to the inner wall on the left side of the scraper 64 through the inclined surface of the scraper 64 itself. The scraper 64 drives the first slider 68 to rotate, the first slider 68 drives the first push rod 67 to rotate, the first push rod 67 drives the moving block 66 to rotate. The moving block 66 rotates on the surface of the reciprocating lead screw 65, while the reciprocating lead screw 65 is fixed on the fixed strip 63 and does not rotate. Therefore, the moving block 66 rotates relative to the reciprocating lead screw 65 and drives the moving block 66 to move left and right reciprocally through the crossed spiral groove. The moving block 66 will drive the first slider 68 to move in the reverse direction through the first push rod 67. The first slider 68 drives the pressure rod 69 to move. The pressure rod 69 will push the dust inside the scraper 64 to move away from the rotation center of the scraper 64. A small amount of exhaust gas will be guided by the inclined plate 613. The gas enters the housing 1 through the air inlet pipe 614 and blows towards the dust on the inner wall of the scraper 64, causing the dust to separate from the scraper 64. When the scraper 64 drives the dust to rotate to the baffle 616, the baffle 616 will block the blown air and press it on the dust on the inner wall of the scraper 64, causing the dust to enter the outlet pipe 615 and be discharged outside the housing 1 along with a small amount of gas, preventing the dust from accumulating in the scraper 64 and thus affecting the subsequent cleaning of the dust. At the same time, the discharged gas and dust will enter the drain pipe 58. Since there is a sponge on the right side of the drain pipe 58 where the outlet pipe 615 is located, the gas and dust cannot move to the right side of the drain pipe 58, causing the gas to drive the dust to contact the water in the drain pipe 58 and flow into the water collection tank 59, preventing the exhaust gas and dust from being directly discharged into the surrounding environment. When the water and dust collected in the water collection tank 59 overflow to the outlet pipe 510, the water will drive the dust to be discharged through the outlet pipe 510.

[0031] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, the adsorption mechanism 7 includes a filter disc 71, a rotating ring 72, a convex strip 73, a transmission plate 74, a rotating plate 75, a guide plate 76, a moving rod 77, an L-shaped rod 78, a transmission rod 79 and a guide groove 710. The filter disc 71 is installed on the inner wall of the limiting block 61. The rotating ring 72 is rotatably connected to the inner wall of the filter disc 71. The convex strip 73 is fixedly connected to the inner wall of the rotating ring 72. The transmission plate 74 is fixedly connected to the circumferential surface of the rotating rod 52. The rotating plate 75 is rotatably connected to the inner wall of the transmission plate 74. The guide plate 76 is fixedly connected to the right side of the slider two 612. The moving rod 77 is slidably connected to the inner wall of the guide plate 76 through a connecting rod. The L-shaped rod 78 is fixedly connected to the surface of the moving rod 77. The transmission rod 79 is fixedly connected to the surface of the L-shaped rod 78. The guide groove 710 is opened on the circumferential surface of the rotating ring 72. When the moving block 66 moves, it drives the moving disc 610 to slide on the surface of the reciprocating lead screw 65. The moving disc 610 drives the slider two 612 to reciprocate through the push rod two 611. The slider two 612 drives the guide plate 76 to move. The guide plate 76 pushes the moving rod 77 guided by the L-shaped rod 78 to move through the inclined groove. The moving rod 77 pushes the L-shaped rod 78 to move. The L-shaped rod 78 drives the transmission rod 79 to move. The transmission rod 79 moves in the guide groove 710 and drives the rotating ring 72 to rotate in the filter disc 71 through the guide groove 710. When the exhausted gas after filtering dust passes through the filter disc 71, the adsorbent in the filter disc 71 will adsorb the corrosive gas in the air, preventing the corrosive gas from contacting the heat exchange tube 4 and thus causing corrosion to it, which will affect its service life. One end of the transmission rod 79 away from the L-shaped rod 78 contacts the inner wall of the guide groove 710. The L-shaped rod 78 is slidably connected to the inner wall of the filter disc 71. The circumferential surface of the transmission rod 79 is slidably connected to the inner wall of the filter disc 71. When the rotating ring 72 rotates, it will drive the convex strip 73 to rotate. The convex strip 73 will turn over the adsorbent in the filter disc 71, improving the contact area between the adsorbent and the air, and thus enhancing the adsorption effect. At the same time, the rotating rod 52 drives the transmission plate 74 to rotate. The transmission plate 74 drives the rotating plate 75 to rotate. The rotating plate 75 will contact the convex strip 73 that reciprocates forward and backward, causing the rotating plate 75 to rotate on the inner wall of the transmission plate 74, further turning over the adsorbent. The adsorbent is a solid adsorbent such as zeolite, silica gel, activated carbon, etc., which can be placed specifically according to the harmful gas components in the exhausted gas.

[0032] A heating method for a heating device using the waste heat of a thermal power plant includes the following steps:

[0033] Step 1: The exhausted gas enters the housing 1 from the air inlet pipe 2, contacts the heat exchange tube 4 in the housing 1, and after heat exchange with the water in the heat exchange tube 4, is discharged from the air outlet pipe 3.

[0034] Step 2: When heat exchange is carried out, condensed water will be generated on the surface of the heat exchange tube 4. At this time, the motor 51 will start and drive the sleeve 53 to move left and right reciprocally under the guidance of the guide rod 54 through the cross-type spiral grooves on the surface;

[0035] Step 3: The sleeve 53 drives the roller 56 in contact with it to rotate through friction. The roller 56 drives the screw rod 55 to rotate. The screw rod 55 drives the wiper 57 guided by the housing 1 to move reciprocally through the cross-type spiral grooves on the surface. The wiper 57 will scrape off the condensed water on the surface of the heat exchange tube 4;

[0036] Step 4: The falling condensed water will enter the drain pipe 58 and be discharged into the water collecting tank 59 to prevent the condensed water from accumulating in the housing 1.

[0037] Working principle: When the moving block 66 moves, it drives the moving disk 610 to slide on the surface of the reciprocating lead screw 65. The moving disk 610 drives the slider two 612 to move reciprocally through the push rod two 611. The slider two 612 drives the guide plate 76 to move. The guide plate 76 pushes the moving rod 77 guided by the L-shaped rod 78 to move through the inclined groove. The moving rod 77 pushes the L-shaped rod 78 to move. The L-shaped rod 78 drives the transmission rod 79 to move. The transmission rod 79 moves in the guide groove 710 and drives the rotating ring 72 to rotate in the filter disk 71 through the guide groove 710. When the waste gas after filtering dust passes through the filter disk 71, the adsorbent in the filter disk 71 will adsorb the corrosive gas in the air to prevent the corrosive gas from contacting the heat exchange tube 4, thereby causing corrosion to it and affecting its service life. When the rotating ring 72 rotates, it drives the convex strip 73 to rotate. The convex strip 73 will turn the adsorbent in the filter disk 71 to increase the contact area between the adsorbent and the air, thereby improving the adsorption effect. At the same time, the rotating rod 52 drives the transmission plate 74 to rotate. The transmission plate 74 drives the rotating plate 75 to rotate. The rotating plate 75 will contact the convex strip 73 that rotates reciprocally forward and backward, causing the rotating plate 75 to rotate inside the transmission plate 74, so that the rotating plate 75 further turns the adsorbent.

[0038] The present invention provides a heating device and a heating method using the waste heat of a thermal power plant. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be realized by the prior art.

Claims

1. A heating device using waste heat from a thermal power plant, comprising a housing, characterized in that: The left side and the right side of the shell are respectively fixedly connected with an air inlet pipe and an air outlet pipe, and the inner wall of the shell is installed with a serpentine heat exchange tube; The bottom of the shell is provided with a drainage mechanism, the inner wall of the shell is provided with a filtering mechanism, and the inner wall of the shell is provided with an adsorption mechanism; The drainage mechanism includes a motor, a rotating rod, a sleeve, a guide rod, a spiral rod, a roller, a wiper, a drainage pipe, a water collecting box and a water outlet pipe, wherein the motor is fixedly connected to the right side of the shell, the rotating rod is fixedly connected to the output end of the motor, the sleeve is movably connected to the circumferential surface of the rotating rod, the guide rod is fixedly connected to the top of the sleeve, the spiral rod is rotatably connected to the inner wall of the shell, the roller is fixedly connected to the circumferential surface of the spiral rod, the wiper is movably connected to the circumferential surface of the spiral rod, the drainage pipe is fixedly connected to the bottom of the shell, the water collecting box is installed at the bottom of the shell, and the water outlet pipe is fixedly connected to the left side of the water collecting box; The filtering mechanism comprises a limit block, a filter plate, a fixed bar, a scraper, a reciprocating screw, a moving block, a push rod 1, a slider 1 and a pressure rod, the limit block is fixedly connected to the inner wall of the shell, the filter plate is fixedly installed on the inner wall of the limit block, the fixed bar is fixedly connected to the inner wall of the limit block, the scraper is fixedly connected to the left end of the rotating rod, the reciprocating screw is fixedly connected to the right side of the fixed bar, the moving block is movably connected to the circumferential surface of the reciprocating screw, the push rod 1 is rotatably connected to the surface of the moving block through a torsion spring, the slider 1 is rotatably connected to one end of the push rod 1 away from the moving block, and the pressure rod is fixedly connected to the surface of the slider 1; The filtering mechanism also includes a movable plate, a second push rod, a second slider, an inclined plate, an air inlet pipe, an air outlet pipe and a baffle, wherein the movable plate is rotatably connected to the left side of the movable block, the second push rod is rotatably connected to the surface of the movable plate through a torsion spring, the second slider is rotatably connected to the end of the second push rod away from the movable plate, the inclined plate is fixedly connected to the inner wall of the air inlet pipe, the baffle is fixedly connected to the inner wall of the limit block, the air inlet pipe is fixedly connected to the inner wall of the top of the shell, and the air outlet pipe is fixedly connected to the inner wall of the bottom of the shell; The adsorption mechanism includes a filter plate, a swivel, a convex strip, a transmission plate, a rotating plate, a guide plate, a movable rod, an L-shaped rod, a transmission rod and a guide groove. The filter plate is installed on the inner wall of the limit block, the swivel is rotatably connected to the inner wall of the filter plate, the convex strip is fixedly connected to the inner wall of the swivel, the transmission plate is fixedly connected to the circumferential surface of the rotating rod, the rotating plate is rotatably connected to the inner wall of the transmission plate, the guide plate is fixedly connected to the right side of the slider two, the movable rod is slidably connected to the inner wall of the guide plate through a connecting rod, the L-shaped rod is fixedly connected to the surface of the movable rod, the transmission rod is fixedly connected to the surface of the L-shaped rod, and the guide groove is opened on the circumferential surface of the swivel.

2. The heating device using waste heat from a thermal power plant according to claim 1, characterized in that: The surface of the rotating rod is provided with a cross-type spiral groove, the inner wall of the sleeve is provided with a block, and the block is located in the cross-type spiral groove, the circumferential surface of the guide rod is slidably connected to the inner wall of the right side of the shell, and the circumferential surface of the rotating rod is rotatably connected to the inner wall of the right side of the shell.

3. The heating device using waste heat from a thermal power plant according to claim 2 is characterized in that: The inner wall of the wiper is in contact with the circumferential surface of the heat exchange tube, the surface of the spiral rod is provided with a cross spiral groove, the inner wall of the wiper is provided with a block, and the block is located in the cross spiral groove, and the side of the drain pipe away from the shell is fixedly connected to the side of the water collecting tank away from the outlet pipe.

4. The heating device using waste heat from a thermal power plant according to claim 3 is characterized in that: One end of the air inlet pipe away from the shell is fixedly connected to the circumferential surface of the air inlet pipe, and one end of the air outlet pipe away from the shell is fixedly connected to the top of the drain pipe. The circumferential surface of the air inlet pipe contacts the inner wall of the limit block, and the circumferential surface of the air outlet pipe contacts the inner wall of the limit block. The slider 1 is slidably connected to the inner wall of the left side of the scraper, the right end of the reciprocating screw is rotatably connected to the inner wall of the left side of the scraper, the slider 2 is slidably connected to the right side of the fixed bar, the inner wall of the movable disk contacts the circumferential surface of the reciprocating screw, and the right side of the scraper contacts the left side of the filter plate.

5. The heating device using waste heat from a thermal power plant according to claim 4 is characterized in that: One end of the transmission rod away from the L-shaped rod contacts the inner wall of the guide groove, the L-shaped rod is slidably connected to the inner wall of the filter disc, and the circumferential surface of the transmission rod is slidably connected to the inner wall of the filter disc.

6. A heating method using a heating device using waste heat from a thermal power plant, using the heating device using waste heat from a thermal power plant as claimed in claim 5, characterized in that: The following steps are involved: Step 1: The exhaust gas enters the shell from the air inlet pipe, contacts the heat exchange tube in the shell, exchanges heat with the water in the heat exchange tube, and is discharged from the air outlet pipe; Step 2: During heat exchange, condensed water will be generated on the surface of the heat exchange tube. At this time, the motor will start and drive the sleeve to move back and forth under the guidance of the guide rod through the cross spiral grooves on the surface; Step 3: The sleeve drives the roller in contact with it to rotate through friction, and the roller drives the spiral rod to rotate. The spiral rod drives the wiper guided by the shell to move back and forth through the cross spiral grooves on the surface, and the wiper will scrape off the condensed water on the surface of the heat exchange tube; Step 4: The falling condensed water will enter the drain pipe and be discharged into the water collection tank to prevent the condensed water from accumulating in the shell.

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