An energy-saving waste heat recovery steam boiler

Abstract

This invention relates to the field of boiler equipment technology and provides an energy-saving waste heat recovery steam boiler, including a boiler body, an impeller chamber, a motor, and an exhaust port. The impeller chamber is installed on the top of the boiler body, the motor is installed on the top of the impeller chamber, and the exhaust port is installed on the surface of the impeller chamber. It also includes a rotating assembly disposed on the outside of the boiler body for recovering and utilizing the kinetic energy of the exhaust gas discharged from the impeller chamber. The rotating assembly includes a panel fixedly connected to the exhaust port. The beneficial effects of this invention are: the water injected into the storage tank, under the stirring action of the high-temperature diversion copper pipe, will fully contact the diversion copper pipe, and the high temperature on the surface of the diversion copper pipe will act evenly on the water. Through the rotation and stirring of the diversion copper pipe, the water temperature can be kept uniform during heating, allowing the evaporation water to be preheated before entering the boiler body, increasing the evaporation rate of the water after entering the boiler body, and reusing the waste heat in the exhaust gas.

Description

Technical Field

[0001] This invention belongs to the field of boiler equipment technology, and in particular relates to an energy-saving waste heat recovery steam boiler. Background Technology

[0002] Steam boilers, as core thermal energy equipment in industrial production, heating and energy supply, heat water to generate steam through fuel combustion and are widely used in chemical, manufacturing, and light industries.

[0003] In traditional steam boilers, the high-temperature exhaust gas generated by fuel combustion is usually discharged directly through the exhaust port. The high-temperature exhaust gas carries a large amount of heat energy, which is not effectively recovered before being discharged into the atmosphere. This also leads to a low overall thermal efficiency of the boiler. The exhaust gas generates a certain amount of kinetic energy, which is also not utilized properly, resulting in secondary energy waste.

[0004] Existing waste heat recovery devices only use fixed heat exchange pipes to recover waste heat from exhaust gas. The contact area between the heat exchange pipes and the water is limited, and the water stays in the pipes for a short time. As a result, the heat energy in the exhaust gas cannot be fully transferred to the evaporation water, resulting in poor waste heat recovery and difficulty in achieving effective preheating of the evaporation water.

[0005] Industrial boiler emissions typically contain a large amount of particulate matter, unburned carbon particles, and other impurities. Over long periods, these impurities adhere to the surfaces of waste heat recovery pipes and exhaust channels, causing blockages, further reducing heat exchange efficiency, and affecting the stable operation of the boiler. Existing filtration devices are mostly fixed filter structures, which are prone to clogging after a period of use, requiring regular manual disassembly and maintenance, increasing operating costs. Summary of the Invention

[0006] The purpose of this invention is to provide an energy-saving waste heat recovery steam boiler, which aims to solve the technical problems existing in the prior art mentioned in the background.

[0007] This invention is implemented as follows: an energy-saving waste heat recovery steam boiler includes a boiler body, an impeller chamber, a motor, and an exhaust port. The impeller chamber is installed on the top of the boiler body, the motor is installed on the top of the impeller chamber, and the exhaust port is installed on the surface of the impeller chamber. The boiler also includes: A rotating assembly, located on the outside of the boiler body, is used to recover and utilize the kinetic energy of the exhaust gas discharged from the impeller chamber. The rotating assembly includes a panel fixedly connected to the exhaust port. A housing is fixedly connected to the side of the panel away from the exhaust port. A gear shaft is rotatably connected to the bottom of the housing. A connecting frame is fixedly connected to the bottom of the gear shaft. A sleeve is fixedly connected to the bottom of the connecting frame. A liquid storage tank is fixedly connected to the outer wall of the boiler body. The sleeve is rotatably connected to the top of the liquid storage tank. A diversion copper pipe is fixedly connected to the bottom of the sleeve. The diversion copper pipe is located inside the liquid storage tank. An exhaust pipe is rotatably connected to the bottom of the diversion copper pipe. The exhaust pipe is located below the liquid storage tank. An injection pipe is installed at the top of the liquid storage tank. An outlet pipe is installed at the bottom of the liquid storage tank. The outlet pipe communicates with the interior of the boiler body. The waste heat recovery component is installed on the outside of the boiler body and is used to recover and utilize the heat energy of the exhaust gas discharged from the impeller chamber. The waste heat recovery component includes a gas guide pipe installed on the side of the outer shell away from the exhaust port. A first sleeve is installed at the bottom of the gas guide pipe. Trapezoidal baffles are evenly installed inside the diversion copper pipe. The first sleeve is rotatably connected to the surface of the sleeve. The inner wall of the first sleeve is in contact with the outer wall of the connecting frame and the sleeve. A slow-conducting heat transfer component is installed inside the liquid storage tank to extend the residence time of water in the pipeline; The filter assembly, located inside the panel, is used to capture and collect particulate matter in the exhaust gas.

[0008] As a preferred technical solution of the present invention: a hollow shaft is rotatably connected inside the outer shell, a first fan is fixedly connected to the side of the hollow shaft near the panel, a shroud is fixedly connected to the shaft center of the first fan near the panel, a second fan is fixedly connected to the side of the hollow shaft away from the panel, and a bevel gear is fixedly connected to the surface of the second fan, the bevel gear meshing with the top of the gear shaft.

[0009] As another preferred technical solution of the present invention: a sliding frame is slidably connected inside the panel, the surface of the sliding frame is coated with a magnetic coating, and a sealing strip is installed on the side of the sliding frame near the exhaust port.

[0010] As another preferred technical solution of the present invention: the slow-speed heat conduction component includes a bracket fixedly connected to the middle of the diversion copper pipe, a first gear rotatably connected to the middle of the bracket, a first spring fixedly connected between the first gear and the inner wall of the bracket, toothed plates symmetrically slidably connected to the bracket, each toothed plate meshing with the first gear, a disc fixedly connected to the end side of the toothed plate, each disc having a sliding groove, a baffle rotatably connected to the surface of the disc, a guide groove being formed in the middle of the inner cavity of the liquid storage tank, a cover plate fixedly connected to the bottom of the diversion copper pipe, a through hole being formed at the bottom of the liquid storage tank, and the inner cavity of the liquid storage tank communicating with the liquid outlet pipe through the through hole.

[0011] As another preferred technical solution of the present invention: the disc slides on the outer wall of the diversion copper pipe and is located inside the liquid storage tank, the disc is in contact with the inner wall of the liquid storage tank, and the sliding groove is in sliding cooperation with the toothed plate.

[0012] As another preferred technical solution of the present invention: the injection pipe is connected to an external water pump, and the external water pump intermittently injects water into the storage tank.

[0013] As another preferred technical solution of the present invention: the filter assembly includes an eccentric turntable mounted on a gear shaft, an L-shaped frame rotatably connected to the eccentric turntable, the top of the L-shaped frame slidably connected to the surface of a hollow shaft, a first magnetic plate mounted on the top of the L-shaped frame, a slide rod movably connected inside the hollow shaft, a second magnetic plate mounted on the surface of the slide rod, the first and second magnetic plates having opposite magnetic properties, a mounting frame rotatably connected inside the panel, a second sleeve fixedly connected to the side of the mounting frame near the slide rod, the second sleeve slidingly engaging with the slide rod, an air inlet groove formed on the surface of the slide rod, an air guide groove formed inside the mounting frame, an air outlet groove evenly formed on the side wall of the mounting frame, the air outlet groove communicating with the inner cavity of the second sleeve through the air guide groove, a filter screen adhered to the middle of the side of the mounting frame near the exhaust port, a dirt collection ring adhered to the edge of the mounting frame, the dirt collection ring being hollow in the middle, a scraper rotatably connected to the surface of the panel, the scraper adhering to the surface of the filter screen, and a dirt collection groove formed in the middle of the scraper.

[0014] As another preferred technical solution of the present invention: when the L-shaped frame is located near the second fan, the air inlet groove is not completely enclosed inside the second sleeve; when the L-shaped frame is located near the first fan, the air inlet groove is blocked by the second sleeve and is in a closed state; and the openings of the air outlet grooves all face the filter screen surface.

[0015] The beneficial effects of the embodiments of the present invention are as follows: The water injected into the storage tank will come into full contact with the high-temperature diversion copper pipe under the stirring action of the diversion copper pipe. The high temperature on the surface of the diversion copper pipe will be evenly applied to the water. Through the rotation and stirring of the diversion copper pipe, the water temperature can be kept uniform when it is heated, so that the evaporation water can be preheated before entering the boiler body, thereby increasing the evaporation rate of the water after entering the boiler body and reusing the waste heat in the exhaust gas.

[0016] As the filter rotates, centrifugal force throws larger impurities towards the edges, causing them to be collected into the dust collection ring. The scraper remains in contact with the filter surface throughout its rotation, sweeping away and collecting dust into the dust collection tank. This combination of scraper and dust collection rings keeps the filter surface ventilated, preventing clogging from prolonged filtration and extending its effective lifespan.

[0017] As the slide bar reciprocates inside the second sleeve, it continuously draws and pressurizes external gas into the second sleeve through the air inlet groove. This pressurizes the air inside the second sleeve and blows it onto the filter screen through the air guide groove and air outlet groove. The gas blown onto the filter screen exerts a reverse thrust on the impurities adhering to the filter screen, causing a gap to form between the impurities and the filter screen after they are blown away by the gas, thus preventing the impurities from adhering to the filter screen and being unable to be removed. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the exhaust port structure provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the overall structure of the rotating component provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the internal structure of the outer shell provided in an embodiment of the present invention; Figure 5 This is an exploded view of the rotating component structure provided in an embodiment of the present invention; Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged schematic diagram of the structure at point A in the middle; Figure 7 This is a partially exploded view of the filter assembly structure provided in an embodiment of the present invention; Figure 8 This is a cross-sectional schematic diagram of the mounting bracket structure provided in an embodiment of the present invention; Figure 9 This is a cross-sectional schematic diagram of the first sleeve structure provided in an embodiment of the present invention; Figure 10 This is an exploded view of the internal structure of the liquid storage tank provided in an embodiment of the present invention; Figure 11 This is a cross-sectional schematic diagram of the liquid storage tank structure provided in an embodiment of the present invention; Figure 12 This is an exploded view of the slow-speed heat conduction component structure provided in an embodiment of the present invention.

[0019] In the picture: 1. Boiler body; 2. Impeller compartment; 3. Motor; 4. Exhaust port; 5. Rotating assembly; 6. Waste heat recovery assembly; 7. Slow-speed heat conduction assembly; 8. Filter assembly; 51. Outer casing; 52. Panel; 53. Hollow shaft; 54. First fan; 55. Drainage shroud; 56. Second fan; 57. Bevel gear; 58. Gear shaft; 59. Connecting frame; 510. Sleeve; 511. Diverter copper pipe; 512. Exhaust pipe; 513. Liquid storage tank; 514. Injection pipe; 515. Outlet pipe; 521. Sliding frame; 522. Sealing strip; 61. Air duct; 62. First sleeve; 63. Trapezoidal block; 71. Bracket; 72. First gear; 73. First spring; 74. Gear plate; 75. Disc; 76. Slide groove; 77. Baffle; 78. Guide groove; 79. Cover plate; 710. Through hole; 81. Eccentric turntable; 82. L-shaped frame; 83. First magnetic plate; 84. Slide rod; 85. Second magnetic plate; 86. Mounting bracket; 87. Second sleeve; 88. Air inlet groove; 89. Air guide groove; 810. Air outlet groove; 811. Filter screen; 812. Sludge collection ring; 813. Scraper. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0022] like Figures 1 to 4 , Figures 9 to 10 As shown, in one embodiment, an energy-saving waste heat recovery steam boiler is proposed, including a boiler body 1, an impeller chamber 2, a motor 3, and an exhaust port 4. The impeller chamber 2 is installed on the top of the boiler body 1, the motor 3 is installed on the top of the impeller chamber 2, and the exhaust port 4 is installed on the surface of the impeller chamber 2. The boiler also includes: A rotating assembly 5 is located on the outside of the boiler body 1 and is used to recover and utilize the kinetic energy of the exhaust gas discharged from the impeller chamber 2. The rotating assembly 5 includes a panel 52 fixedly connected to the exhaust port 4. A housing 51 is fixedly connected to the side of the panel 52 away from the exhaust port 4. A gear shaft 58 is rotatably connected to the bottom of the housing 51. A connecting frame 59 is fixedly connected to the bottom of the gear shaft 58. A sleeve 510 is fixedly connected to the bottom of the connecting frame 59. A liquid storage tank 513 is fixedly connected to the outer wall of the boiler body 1. The sleeve 510 is rotatably connected to the top of the liquid storage tank 513. A diversion copper pipe 511 is fixedly connected to the bottom of the sleeve 510. The diversion copper pipe 511 is located in the inner cavity of the liquid storage tank 513. An exhaust pipe 512 is rotatably connected to the bottom of the diversion copper pipe 511. The exhaust pipe 512 is located below the liquid storage tank 513. An injection pipe 514 is installed on the top of the liquid storage tank 513. An outlet pipe 515 is installed on the bottom of the liquid storage tank 513. The outlet pipe 515 is connected to the inside of the boiler body 1. Waste heat recovery component 6 is installed on the outside of boiler body 1 and is used to recover and utilize the heat energy of the exhaust gas discharged from impeller chamber 2. Waste heat recovery component 6 includes a gas guide pipe 61 installed on the side of the outer shell 51 away from the exhaust port 4. A first sleeve 62 is installed at the bottom of the gas guide pipe 61. Trapezoidal baffles 63 are evenly installed inside the diversion copper pipe 511. The first sleeve 62 is rotatably connected to the surface of the sleeve 510. The inner wall of the first sleeve 62 is in contact with the connecting frame 59 and the outer wall of the sleeve 510. The slow-speed heat conduction component 7 is installed inside the liquid storage tank 513 to extend the residence time of the water in the pipeline; The filter assembly 8, located inside the panel 52, is used to capture and collect particulate matter in the exhaust gas.

[0023] In practical application, the operator pours fuel into the boiler body 1 and ignites it inside the boiler body 1. Then, the motor 3 is started, causing the impeller chamber 2 to discharge the air inside the boiler body 1 to the outside through the exhaust port 4. When the fuel is burning, it heats the water pipes inside the boiler body 1, causing the water in the water pipes to be heated into steam and discharged to the outside through the steam outlet on the boiler body 1.

[0024] When exhaust port 4 discharges exhaust gas, the exhaust gas is blown into the interior of housing 51 through panel 52. The exhaust gas is in a high-temperature state due to the continuous combustion of fuel. When the exhaust gas is blown into the interior of housing 51, it will push the first fan 54 and the second fan 56 through the guide shroud 55, so that the first fan 54, hollow shaft 53 and the second fan 56 rotate inside housing 51. During the rotation of the second fan 56, it will drive the gear shaft 58 to rotate together through bevel gear 57. During the rotation of the gear shaft 58, it will drive the connecting frame 59, sleeve 510 and diversion copper pipe 511 to rotate together, so that the diversion copper pipe 511 is in a rotating state inside the liquid storage tank 513.

[0025] The staff connects an external water pump to the injection pipe 514, so that the evaporation water is intermittently injected into the storage tank 513. The water injected into the storage tank 513 will be tumbled and stirred by the rotation of the diversion copper pipe 511, so that the water is in full contact with the diversion copper pipe 511. When the water flows to the bottom of the storage tank 513, it will enter the boiler body 1 through the outlet pipe 515 and evaporate at the high temperature of fuel combustion.

[0026] After the high-temperature exhaust gas inside the boiler body 1 enters the shell 51, it will continue to be blown into the guide pipe 61 and the first sleeve 62 due to the continuous discharge of exhaust gas. When the exhaust gas enters the first sleeve 62, since the inside of the first sleeve 62 is in communication with the inner cavity of the sleeve 510, the high-temperature exhaust gas will enter the diversion copper pipe 511 through the sleeve 510. During the flow of high-temperature exhaust gas, the diversion copper pipe 511 will be heated by the heat carried by the exhaust gas. The trapezoidal baffle 63 inside the diversion copper pipe 511 will increase the contact area when the exhaust gas flows inside, so that the heat energy of the exhaust gas can be conducted to the diversion copper pipe 511 more quickly, and the diversion copper pipe 511 can be heated up faster.

[0027] The water injected into the storage tank 513 will come into full contact with the high-temperature diversion copper pipe 511 under the stirring action of the diversion copper pipe 511. The high temperature on the surface of the diversion copper pipe 511 will be evenly applied to the water. Through the rotation and stirring of the diversion copper pipe 511, the water temperature can be kept uniform when it is heated, so that the evaporation water can be preheated before entering the boiler body 1, thereby increasing the evaporation rate of the water after entering the boiler body 1 and reusing the waste heat in the exhaust gas.

[0028] like Figure 4 As shown, in a preferred embodiment of the present invention, a hollow shaft 53 is rotatably connected inside the outer casing 51. A first fan 54 is fixedly connected to the side of the hollow shaft 53 near the panel 52. A shroud 55 is fixedly connected to the axis of the first fan 54 near the panel 52. A second fan 56 is fixedly connected to the side of the hollow shaft 53 away from the panel 52. A bevel gear 57 is fixedly connected to the surface of the second fan 56. The bevel gear 57 meshes with the top of the gear shaft 58.

[0029] like Figure 1 , Figure 4 and Figure 5 As shown, in another preferred embodiment of the present invention, a sliding frame 521 is slidably connected inside the panel 52, the surface of the sliding frame 521 is coated with a magnetic coating, and a sealing strip 522 is installed on the side of the sliding frame 521 near the exhaust port 4.

[0030] In practical application, when the panel 52 needs to be installed on the exhaust port 4, after the panel 52 and the exhaust port 4 are close together, the sliding frame 521 will slide out from the inside of the panel 52 due to magnetism, and the sealing strip 522 will adhere to the exhaust port 4. Thus, when the panel 52 and the exhaust port 4 are shaken and intermittent, the sliding frame 521 and the sealing strip 522 can still play a sealing role between the panel 52 and the exhaust port 4.

[0031] like Figure 11 and Figure 12 As shown, in another preferred embodiment of the present invention, the slow-speed heat conduction component 7 includes a bracket 71 fixedly connected to the middle of the diversion copper pipe 511. A first gear 72 is rotatably connected to the middle of the bracket 71. A first spring 73 is fixedly connected between the first gear 72 and the inner wall of the bracket 71. Toothed plates 74 are symmetrically slidably connected to the bracket 71. The toothed plates 74 mesh with the first gear 72. A disc 75 is fixedly connected to the end side of the toothed plates 74. A sliding groove 76 is opened on each disc 75. A baffle 77 is rotatably connected to the surface of the disc 75. A guide groove 78 is opened in the middle of the inner cavity of the liquid storage tank 513. A cover plate 79 is fixedly connected to the bottom of the diversion copper pipe 511. A through hole 710 is opened at the bottom of the liquid storage tank 513. The inner cavity of the liquid storage tank 513 is connected to the liquid outlet pipe 515 through the through hole 710.

[0032] In practical application, when the water pump intermittently fills the storage tank 513 with water through the injection pipe 514, the water pumped into the storage tank 513 first accumulates on the top of the upper disc 75. At this time, because the side of the disc 75 is in contact with the storage tank 513, the water pressure causes the disc 75 to slowly slide downward inside the storage tank 513, so that the water can fully contact the surface of the diversion copper pipe 511. The downward movement of the disc 75 will drive the toothed plate 74 to slide down together. When the toothed plate 74 slides, it will rotate the first gear 72 through meshing and twist the first spring 73. The twisting of the first spring 73 will generate torque. The lower disc 75 and the toothed plate 74 will slide upward under the meshing transmission of the first gear 72, so that the bottom disc 75 moves closer to the guide groove 78 of the storage tank 513.

[0033] When the top disc 75 slides down to the guide groove 78 of the liquid storage tank 513, the side of the disc 75 is no longer in contact with the inner wall of the liquid storage tank 513. The water accumulated on the disc 75 will flow downward through the gap of the guide groove 78 and accumulate on the top of the lower disc 75. Under the pressure of the water, the lower disc 75 will cause the first gear 72 to rotate in the opposite direction and cause the first spring 73 to return to its initial state. When the disc 75 slides down to the bottom, the water will flow from the top of the disc 75 to the through hole 710 and flow into the boiler body 1 through the liquid outlet pipe 515.

[0034] When the diversion copper pipe 511 rotates, it will drive the cover plate 79 to rotate together. During the rotation process, the cover plate 79 will repeatedly partially block the through hole 710, which will reduce the downward flow speed of water inside the storage tank 513, thereby prolonging the heating time of the water by the diversion copper pipe 511.

[0035] like Figure 11 As shown, in another preferred embodiment of the present invention, the disc 75 slides on the outer wall of the diversion copper pipe 511 and is located inside the liquid storage tank 513. The disc 75 is in contact with the inner wall of the liquid storage tank 513, and the slide groove 76 is in sliding engagement with the toothed plate 74.

[0036] like Figure 10 As shown, in another preferred embodiment of the present invention, the injection pipe 514 is connected to an external water pump, which intermittently injects water into the storage tank 513.

[0037] like Figures 4 to 8 As shown, in another preferred embodiment of the present invention, the filter assembly 8 includes an eccentric turntable 81 mounted on a gear shaft 58. An L-shaped frame 82 is rotatably connected to the eccentric turntable 81. The top of the L-shaped frame 82 is slidably connected to the surface of a hollow shaft 53. A first magnetic plate 83 is mounted on the top of the L-shaped frame 82. A slide rod 84 is movably connected inside the hollow shaft 53. A second magnetic plate 85 is mounted on the surface of the slide rod 84. The first magnetic plate 83 and the second magnetic plate 85 have opposite magnetic properties. A mounting bracket 86 is rotatably connected inside the panel 52. A second sleeve 87 is fixedly connected to the side of the mounting bracket 86 near the slide rod 84. The sleeve 87 and the slide rod 84 are slidably engaged. The surface of the slide rod 84 is provided with an air inlet groove 88. The inside of the mounting bracket 86 is provided with an air guide groove 89. The side wall of the mounting bracket 86 is provided with air outlet grooves 810. The air outlet grooves 810 are connected to the inner cavity of the second sleeve 87 through the air guide grooves 89. A filter screen 811 is attached to the middle of the side of the mounting bracket 86 near the exhaust port 4. A dirt collection ring 812 is attached to the edge of the mounting bracket 86. The dirt collection ring 812 is hollow in the middle. A scraper 813 is rotatably connected to the surface of the panel 52. The scraper 813 is in contact with the surface of the filter screen 811. A dirt collection groove is provided in the middle of the scraper 813.

[0038] In practical application, the rotation of the gear shaft 58 causes the L-shaped frame 82 to slide back and forth on the outer wall of the hollow shaft 53 via the eccentric turntable 81. When the L-shaped frame 82 slides, it is attracted by the magnetic attraction of the first magnetic plate 83 and the second magnetic plate 85, causing the slide rod 84 to slide back and forth inside the hollow shaft 53. During the rotation of the hollow shaft 53, the slide rod 84 will rotate together. When the slide rod 84 rotates, it will drive the second sleeve 87, the mounting bracket 86 and the filter screen 811 to rotate together. The filter screen 811 will intercept dust when exhaust gas is discharged from the exhaust port 4, so that dust and particles are attached to the surface of the filter screen 811. When the filter screen 811 rotates, the centrifugal force will cause larger impurities to be thrown to the edge and into the dirt collection ring 812, thereby collecting larger impurities. The scraper 813 is always in contact with the surface of the filter screen 811 when the filter screen 811 rotates, scraping and collecting the dust attached to the surface of the filter screen 811 into the dirt collection tank. The scraper 813 and the dirt collection ring 812 scrape and collect the impurities attached to the filter screen 811, keeping the surface of the filter screen 811 in a ventilated state, avoiding the problem of clogging caused by long-term filtration of impurities, and improving the effective service life of the filter screen 811.

[0039] During the reciprocating sliding of the slide bar 84 inside the second sleeve 87, external gas is continuously drawn into and pressurized through the air inlet groove 88. This pressurizes the air inside the second sleeve 87 and blows it onto the filter screen 811 through the air guide groove 89 and the air outlet groove 810. The gas blown onto the filter screen 811 exerts a reverse thrust on the impurities adhering to the filter screen 811, causing a gap to form between the impurities and the filter screen 811 after they are blown away by the gas, thus avoiding the problem of impurities adhering to the filter screen 811 and being unable to be removed.

[0040] like Figure 7 As shown, in another preferred embodiment of the present invention, when the L-shaped frame 82 is located near the second fan 56, the air inlet groove 88 is not completely enclosed inside the second sleeve 87. When the L-shaped frame 82 is located near the first fan 54, the air inlet groove 88 is blocked by the second sleeve 87 and is in a closed state. The openings of the air outlet grooves 810 all face the surface of the filter screen 811.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An energy saving waste heat recovery steam boiler comprising a boiler body (1), an impeller chamber (2), a motor (3) and an exhaust port (4), wherein the impeller chamber (2) is installed on the top of the boiler body (1), the motor (3) is installed on the top of the impeller chamber (2), and the exhaust port (4) is installed on the surface of the impeller chamber (2). Also includes: A rotating assembly (5) is located on the outside of the boiler body (1) and is used to recover and utilize the kinetic energy of the exhaust gas discharged from the impeller chamber (2). The rotating assembly (5) includes a panel (52) fixedly connected to the exhaust port (4). A housing (51) is fixedly connected to the side of the panel (52) away from the exhaust port (4). A gear shaft (58) is rotatably connected to the bottom of the housing (51). A connecting frame (59) is fixedly connected to the bottom of the gear shaft (58). A sleeve (510) is fixedly connected to the bottom of the connecting frame (59). A liquid storage tank (513) is fixedly connected to the outer wall of the boiler body (1). The sleeve (510) is rotatably connected to the top of the liquid storage tank (513). The bottom of the sleeve (510) is fixedly connected to a diversion copper pipe (511). The diversion copper pipe (511) is located in the inner cavity of the liquid storage tank (513). The bottom of the diversion copper pipe (511) is rotatably connected to an exhaust pipe (512). The exhaust pipe (512) is located below the liquid storage tank (513). The top of the liquid storage tank (513) is equipped with an injection pipe (514). The bottom of the liquid storage tank (513) is equipped with an outlet pipe (515). The outlet pipe (515) is connected to the inside of the boiler body (1). Waste heat recovery assembly (6) is set on the outside of boiler body (1) for recovering and utilizing the heat energy of exhaust gas discharged from impeller chamber (2). The waste heat recovery assembly (6) includes a gas guide pipe (61) installed on the side of the outer shell (51) away from the exhaust port (4). A first sleeve (62) is installed at the bottom of the gas guide pipe (61). Trapezoidal baffles (63) are evenly installed inside the diversion copper pipe (511). The first sleeve (62) is rotatably connected to the surface of the sleeve (510). The inner wall of the first sleeve (62) is in contact with the connecting frame (59) and the outer wall of the sleeve (510). The slow-speed heat conduction component (7) is installed inside the liquid storage tank (513) to extend the residence time of the water in the pipeline; The filter assembly (8) is located inside the panel (52) and is used to capture and collect particulate matter in the exhaust gas.

2. The energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, A hollow shaft (53) is rotatably connected inside the outer casing (51). A first fan (54) is fixedly connected to the side of the hollow shaft (53) near the panel (52). A shroud (55) is fixedly connected to the axis of the first fan (54) near the panel (52). A second fan (56) is fixedly connected to the side of the hollow shaft (53) away from the panel (52). A bevel gear (57) is fixedly connected to the surface of the second fan (56). The bevel gear (57) meshes with the top of the gear shaft (58).

3. The energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The panel (52) is slidably connected to a slide frame (521), the surface of the slide frame (521) is coated with a magnetic coating, and a sealing strip (522) is installed on the side of the slide frame (521) near the exhaust port (4).

4. The energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The slow-speed heat conduction assembly (7) includes a bracket (71) fixedly connected to the middle of the shunt copper pipe (511). A first gear (72) is rotatably connected to the middle of the bracket (71). A first spring (73) is fixedly connected between the first gear (72) and the inner wall of the bracket (71). Toothed plates (74) are symmetrically slidably connected to the bracket (71). All toothed plates (74) mesh with the first gear (72). The ends of the toothed plates (74) are fixedly connected to... There is a disc (75), and each disc (75) has a sliding groove (76). A baffle (77) is rotatably connected to the surface of the disc (75). A guide groove (78) is provided in the middle of the inner cavity of the liquid storage tank (513). A cover plate (79) is fixedly connected to the bottom of the diversion copper pipe (511). A through hole (710) is provided at the bottom of the liquid storage tank (513). The inner cavity of the liquid storage tank (513) is connected to the liquid outlet pipe (515) through the through hole (710).

5. The energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The disc (75) slides on the outer wall of the diversion copper pipe (511) and is located inside the liquid storage tank (513). The disc (75) is in contact with the inner wall of the liquid storage tank (513), and the groove (76) slides in cooperation with the toothed plate (74).

6. The energy-saving waste heat recovery steam boiler according to claim 1, characterized in that, The injection pipe (514) is connected to an external water pump, which intermittently injects water into the storage tank (513).

7. An energy-saving waste heat recovery steam boiler according to claim 2, characterized in that, The filter assembly (8) includes an eccentric turntable (81) mounted on a gear shaft (58), an L-shaped frame (82) rotatably connected to the eccentric turntable (81), the top of the L-shaped frame (82) slidably connected to the surface of a hollow shaft (53), a first magnetic plate (83) mounted on the top of the L-shaped frame (82), a slide rod (84) movably connected inside the hollow shaft (53), a second magnetic plate (85) mounted on the surface of the slide rod (84), the first magnetic plate (83) and the second magnetic plate (85) having opposite magnetic properties, a mounting bracket (86) rotatably connected inside the panel (52), a second sleeve (87) fixedly connected to the side of the mounting bracket (86) near the slide rod (84), the second sleeve (87) and the slide rod (84) 4) Sliding fit, the surface of the slide rod (84) is provided with an air inlet groove (88), the inside of the mounting bracket (86) is provided with an air guide groove (89), the side wall of the mounting bracket (86) is provided with an air outlet groove (810), the air outlet groove (810) is connected to the inner cavity of the second sleeve (87) through the air guide groove (89), the mounting bracket (86) is attached to the middle of the side near the exhaust port (4) with a filter screen (811), the edge of the mounting bracket (86) is attached with a dirt collection ring (812), the dirt collection ring (812) is hollow in the middle, the panel (52) is rotatably connected with a scraper (813), the scraper (813) is in contact with the surface of the filter screen (811), and the scraper (813) is provided with a dirt collection groove in the middle.

8. An energy-saving waste heat recovery steam boiler according to claim 7, characterized in that, When the L-shaped frame (82) is located near the second fan (56), the air inlet slot (88) is not completely enclosed inside the second sleeve (87). When the L-shaped frame (82) is located near the first fan (54), the air inlet slot (88) is blocked by the second sleeve (87) and is in a closed state. The openings of the air outlet slots (810) all face the surface of the filter screen (811).

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