Comprehensive utilization method and device for waste heat of circular cooler

Abstract

The invention relates to a comprehensive utilization method and device for waste heat of an annular cooler, and belongs to the technical field of waste heat collection. The comprehensive utilization device comprises an annular base and a rotary frame fixedly arranged on the annular base, a smoke inlet cavity is fixedly formed in the top of the rotary frame, and a heat insulation cavity is fixedly formed in the annular base; heat insulation liquid is stored in the heat insulation cavity; a contact groove is formed in the partition plate between every two adjacent heat insulation cavities, and a contact piece is arranged in each contact groove in a sliding mode. The two ends of the contact piece make contact with the heat insulation liquid in the two adjacent heat insulation cavities. A liquid outlet pipe is fixedly arranged on the bottom surface of the heat insulation chamber; an electromagnetic valve is arranged on the liquid outlet pipe; a guide sheet is fixedly arranged on the side wall of the contact piece; a guide groove for accommodating the guide sheet is formed in the inner wall of the contact groove; a second magnetic valve switch is arranged in the guide groove; and the electromagnetic valve on the liquid outlet pipe is connected with the second electromagnetic valve switch. The method has the effect of automatically judging heat leakage of the circular cooler.

Description

Technical Field

[0001] The present application relates to the technical field of waste heat collection, and in particular to a method and device for comprehensive utilization of waste heat from a ring cooler. Background Art

[0002] Annular cooler is a kind of equipment used to cool high-temperature sintered ore. The high-temperature ore is usually exhausted or blown in the annular cooler to recover waste heat. Usually, cold air is sucked in from the bottom of the annular cooler, passes through the ore layer, and exchanges heat with the high-temperature ore. The heated air can then be recycled and used for drying and preheating of green pellets. The trolley that transports the sintered ore moves in a circle within the rotating frame of the annular cooler, driving the ore to go through the entire cooling process.

[0003] During the operation of the ring cooler, heat is easily lost on both sides of its rotating frame. In the prior art, a water seal method is usually used to reduce heat loss. The water seal forms a seal by setting a cooling water layer on both sides of the rotating frame, thereby reducing the entry of cold air and the escape of hot air, and improving the heat exchange efficiency.

[0004] However, during the long-term use of the ring cooler, due to the high temperature and mechanical stress, cracks or other damage may appear on the slewing frame, which will further aggravate the heat loss. These cracks or damages are easily covered by mineral materials or dust and are not easy to detect during maintenance. When the ring cooler is recovering waste heat, if there is a large amount of heat loss, it will seriously affect the thermal efficiency and energy recovery efficiency of the system. In addition, in order to carry out necessary maintenance and repairs, the ring cooler may need to be shut down, which will further affect production efficiency and economic benefits. Summary of the invention

[0005] In order to improve the above-mentioned problems, the present application provides a method and device for comprehensive utilization of waste heat from a ring cooler.

[0006] The present application provides a device for comprehensive utilization of waste heat from a ring cooler, which adopts the following technical solution: A device for comprehensively utilizing waste heat from a ring cooler comprises an annular base and a rotating frame fixedly mounted on the annular base, a smoke inlet chamber fixedly mounted on the top of the rotating frame, and an insulating chamber fixedly mounted on the annular base; insulating liquid is stored in the insulating chamber; a contact groove is provided on a partition plate between two adjacent insulating chambers, and a contact piece is slidably mounted in the contact groove; two ends of the contact piece are respectively in contact with the insulating liquid in the two adjacent insulating chambers.

[0007] Optionally, a liquid outlet pipe is fixedly provided on the bottom surface of the insulation chamber; a solenoid valve is arranged on the liquid outlet pipe; a guide plate is fixedly provided on the side wall of the contact member, and a guide groove for accommodating the guide plate is opened on the inner wall of the contact groove; a magnetic valve switch 2 is arranged in the guide groove; the solenoid valve on the liquid outlet pipe is connected to the magnetic valve switch 2.

[0008] Optionally, a magnetic block is fixedly provided on the side wall of the guide groove, and the magnetic block is an electromagnet; the magnetic block is electrically connected to the second magnetic valve switch; and a metal block that can be magnetically adsorbed by the magnetic block is fixedly provided on the side wall of the guide plate.

[0009] Optionally, a liquid inlet pipe is fixedly provided on the top surface of the insulation chamber; a solenoid valve is provided on the liquid inlet pipe, a float tube is fixedly provided on the side wall of the insulation chamber, a float ball is provided in the float tube; a magnetic valve switch 1 is provided on the top of the float tube; the solenoid valve of the liquid inlet pipe is connected to the magnetic valve switch 1.

[0010] Optionally, a plurality of heat transfer components are arranged on the insulation wall between the insulation chamber and the smoke inlet chamber, and the heat transfer components include a liquid inlet pump, an evaporator tube, an expansion valve and a condenser tube connected in sequence; a coolant flows in the heat transfer components; the evaporator tube is located in the smoke inlet chamber, and the condenser tube is located in the insulation chamber.

[0011] Optionally, the liquid inlet pump includes an outer shell and a piston slidably arranged in the outer shell; a coolant inlet pipe and a coolant outlet pipe are fixedly provided on the outer peripheral surface of the outer shell, an inlet plug is provided at the outlet of the coolant inlet pipe, and an outlet plug is provided at the inlet of the coolant outlet pipe; return springs are provided on the inlet plug and the outlet plug.

[0012] Optionally, a plurality of water wheels are rotatably arranged on the insulation wall, a transmission wheel 1 is coaxially connected to one side of the water wheel, a transmission wheel 2 meshing with the transmission wheel 1 and an eccentric wheel are rotatably arranged inside the insulation wall; the transmission wheel 2 is coaxially fixedly connected to the eccentric wheel; the eccentric wheel is hinged to the piston via a connecting rod.

[0013] Optionally, a wheel groove for accommodating the water wheel is formed on the heat-insulating wall, and a stopper is fixedly arranged in the wheel groove; a stopper groove for accommodating the stopper is formed on the axis of the water wheel; and the stopper is an electromagnet.

[0014] Optionally, the expansion valve includes a valve body and a valve core; a liquid flow channel is coaxially arranged in the valve body; the valve core is inserted into the liquid flow channel; a liquid cavity is provided in the valve body on both sides of the liquid flow channel; a connecting groove is opened on the top surface of the liquid cavity, and the end of the valve core is slidably arranged in the connecting groove; a magnet is fixedly arranged on the top surface of the connecting groove, and the magnet is an electromagnet; a metal sheet that can be magnetically attracted to the magnet is fixedly arranged on the end of the valve core; a compression spring is fixedly arranged between the top surface of the liquid cavity and the valve core.

[0015] The present application provides a method for comprehensive utilization of waste heat from a ring cooler, which uses a comprehensive utilization device for waste heat from a ring cooler to recover leaked heat from the ring cooler.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: 1. The function of cooling water is to prevent heat loss. There is inevitably a small amount of heat exchange in the insulation wall between the smoke inlet chamber and the insulation chamber. The cooling water can serve as a buffer between the smoke inlet chamber and the outside world to prevent the outside cold air from directly entering the smoke inlet chamber. On the other hand, when cracks appear on the insulation wall, which may cause heat loss, the lost heat can be collected by flowing cooling water.

[0017] 2. The flow of cooling water is controlled by the contact piece. When the temperature of cooling water on one side rises, the cooling water expands, causing the water pressure to rise. The change in water pressure drives the contact piece to move. Since the contact piece controls the solenoid valve for water outlet, when the contact piece moves, the cooling water in the chamber flows and takes away the heat.

[0018] 3. The function of the liquid inlet pump is to increase the temperature and pressure of the gaseous coolant so that the gaseous coolant can smoothly release heat and form a liquid when it contacts the cooling water; the function of the expansion valve is to reduce the temperature and pressure of the liquid coolant so that the liquid coolant can absorb heat and form a gas when it contacts the material. This application forms a heat exchange between cooling water and materials through the above process. When heat leakage occurs, the cooling water flow accelerates the removal of material heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial structural schematic diagram of the ring cooler waste heat comprehensive utilization device in the embodiment of the present application.

[0020] Figure 2 It is a schematic diagram of the structure of the heat-insulating chamber of an embodiment of the present application.

[0021] Figure 3 It is a schematic diagram of the structure of the heat-insulating wall facing the heat-insulating chamber in an embodiment of the present application.

[0022] Figure 4 It is a cross-sectional view of the heat transfer component of the embodiment of the present application.

[0023] Figure numerals: 1, annular base; 11, rotating frame; 12, smoke inlet chamber; 13, air outlet tower; 14, shell; 15, support frame; 16, piston; 17, magnetic block; 18, connecting rod; 19, heat insulation chamber; 2, liquid inlet pipe; 21, liquid outlet pipe; 22, heat insulation wall; 23, limit plate; 24, contact piece; 25, contact groove; 26, guide plate; 3, partition; 31, evaporation pipe; 32, expansion valve; 33, condenser; 34, coolant inlet pipe; 35 , coolant outlet pipe; 36, liquid inlet plug; 37, liquid outlet plug; 38, reset spring; 4, water wheel; 41, wheel plate; 42, transmission wheel one; 43, transmission wheel two; 44, connecting shaft; 45, bevel gear set; 46, eccentric wheel; 47, wheel groove; 48, stopper; 49, stop groove; 5, valve body; 51, valve core; 52, inlet end; 53, metal sheet; 54, compression spring; 55, liquid flow channel; 56, liquid cavity; 57, connecting groove; 58, outlet end. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-4 This application is described in further detail.

[0025] The embodiment of the present application discloses a method and device for comprehensive utilization of waste heat from a ring cooler. The device for comprehensive utilization of waste heat from a ring cooler comprises an annular base 1 and a trolley rotatably disposed on the annular base 1. Several trolleys are connected end to end to form an annular trolley group. An annular revolving frame 11 is fixedly disposed on the annular base 1, and the trolley group is rotatably disposed in the revolving frame 11. An annular smoke inlet chamber 12 is fixedly disposed on the top of the revolving frame 11, and the smoke inlet chamber 12 is connected to the revolving frame 11. Several groups of air outlet towers 13 are fixedly disposed on the top of the smoke inlet chamber 12; an air pump is disposed in the air outlet tower 13 for collecting the airflow in the smoke inlet chamber 12.

[0026] A feeding chamber is also fixed on the top of the rotating frame 11, which separates the smoke inlet chamber 12. The annular head and tail of the smoke inlet chamber 12 are respectively fixed to the two vertical side walls of the feeding chamber. The feeding chamber is connected to the rotating frame 11, and the material falls from the feeding chamber onto the rotating trolley.

[0027] A plurality of support frames 15 are evenly distributed along the circumference of the annular base 1. The support frames 15 are respectively fixedly connected to the outer walls of the smoke inlet chamber 12 and the revolving frame 11 to provide support therefor.

[0028] An annular partition is fixed between the rotating frame 11 and the annular base 1; the partition is composed of a blast chamber, a fixed layer and a material discharge chamber connected end to end in sequence. The blast chamber is connected to the rotating frame 11; a blower is arranged in the blast chamber, and the blower blows upward in the vertical direction. The fixed layer is a solid pad, which is used to provide support for the rotating frame 11. The material discharge chamber is connected to the rotating frame 11; the trolley moves to the top of the material discharge chamber and tilts downward to discharge the material.

[0029] In one embodiment, the trolley includes a square outer frame and a plurality of support beams uniformly distributed in the square outer frame along the trolley's transverse and longitudinal directions. The material falls onto the support beams of the trolley; the cold air flow blown upward by the blower contacts the material, carries the heat, and continues to flow upward into the smoke inlet chamber 12. Finally, the hot air flow leaves the smoke inlet chamber 12 through the air outlet tower 13.

[0030] An insulating chamber 19 with an arc-shaped cross section is fixed on the annular base 1; a plurality of insulating chambers 19 are connected end to end to form an annular shape. The insulating chamber 19 includes an inner insulating chamber fixed to the inner circumference of the rotating frame 11 and an outer insulating chamber fixed to the outer circumference of the rotating frame 11. The top surface of the insulating chamber 19 is at the same height as the top surface of the rotating frame 11. Insulating liquid is stored in the insulating chamber 19. In one embodiment, the insulating liquid is water.

[0031] The top and bottom surfaces of the heat-insulating chamber 19 are respectively fixed with a liquid inlet pipe 2 and a liquid outlet pipe 21; both the liquid inlet pipe 2 and the liquid outlet pipe 21 are provided with solenoid valves, which are closed after power is cut off. A magnetic valve switch 1 is provided on the connection circuit between the solenoid valve of the liquid inlet pipe 2 and the power supply, and a magnetic valve switch 2 is provided on the connection circuit between the solenoid valve of the liquid outlet pipe 21 and the power supply. The magnetic valve switch 2 is a single-pole double-throw switch.

[0032] A float ball that moves vertically is arranged in the heat-insulating chamber 19. A float tube that is arranged vertically is fixed on the side wall of the heat-insulating chamber 19, and the float ball is slidably arranged in the float tube. A magnetic valve switch 1 is arranged at the top of the float tube; the float ball can contact the magnetic valve switch 1 after the liquid level rises. Specifically, when the float ball contacts the magnetic valve switch 1, the magnetic valve switch 1 is disconnected, and the electromagnetic valve of the liquid inlet pipe 2 is closed; on the contrary, the magnetic valve switch 1 is turned on, and the electromagnetic valve is in an open state.

[0033] In one embodiment, the cross section of the floating tube is square. The bottom surface of the floating tube is connected to the heat insulation chamber 19, and is fixed with a limit plate for preventing the floating ball from falling off. The magnetic valve switch is arranged on the inner top surface of the floating tube.

[0034] A contact member 24 that moves in a horizontal direction is provided on the inner wall of two adjacent insulation chambers 19. Specifically, a horizontally arranged contact groove 25 is provided on the partition plate 3 between the two adjacent insulation chambers 19, and the contact member 24 is slidably arranged in the contact groove 25. A guide piece 26 is fixedly provided on the side wall of the contact member 24, and a guide groove for accommodating the guide piece 26 is provided on the inner wall of the contact groove 25. Magnetic valve switch 2 is arranged in the guide groove. In one embodiment, the direction toward the left insulation chamber 19 is direction one; after the guide piece 26 moves a certain distance toward direction one, the guide piece 26 contacts the magnetic valve switch 2, and the electromagnetic valve of the liquid outlet pipe 21 is in a conducting state; when the guide piece 26 does not move, or when the guide piece 26 moves in the opposite direction of direction one, the electromagnetic valve of the liquid outlet pipe 21 is disconnected from the power supply.

[0035] Specifically, before the float rises to the top of the float tube, the solenoid valve of the liquid inlet pipe 2 is in an open state, and the water level in the insulation chamber 19 continues to rise; after the float contacts the magnetic valve switch, the solenoid valve of the liquid inlet pipe 2 is in a closed state.

[0036] Specifically, the two ends of the contact member 24 are in contact with the cooling water in the two adjacent insulation chambers 19. Since the temperatures in the two insulation chambers 19 are close and the cooling water density is consistent, the distances at which the two ends of the contact member 24 extend out of the contact groove 25 are close to each other. When a crack appears between the insulation chamber 19 and the smoke inlet chamber 12, the heat exchange between the insulation chamber 19 and the smoke inlet chamber 12 will be intensified, the temperature increase of the cooling water in the insulation chamber 19 will be accelerated, and a temperature difference will appear between the cooling water in the two adjacent insulation chambers 19. The water level rise caused by the thermal expansion of the cooling water will cause the contact member 24 to move toward the adjacent insulation chamber 19. After the cooling water temperature rises to exceed the preset range, the guide plate 26 moves to contact the magnetic valve switch 2, the electromagnetic valve of the liquid outlet pipe 21 opens, and the water level in the insulation chamber 19 drops; after the float is separated from the magnetic valve switch 1, the electromagnetic valve of the liquid inlet pipe 2 is in an open state, and the cooling water in the insulation chamber 19 is in a flowing state, thereby collecting the heat in the insulation chamber 19.

[0037] A magnetic block 17 is embedded in the side wall of the guide groove. The magnetic block 17 is an electromagnet. The magnetic block 17 is electrically connected to the second magnetic valve switch. A metal block that can be magnetically adsorbed by the magnetic block 17 is fixed on the side wall of the guide piece 26. When the guide piece 26 contacts the second magnetic valve switch, the magnetic block 17 is in a conducting state and has an adsorption effect on the metal block, so that the guide piece 26 and the second magnetic valve switch remain in a conducting state.

[0038] The side wall of the heat insulation chamber 19 adjacent to the smoke inlet chamber 12 is the heat insulation wall 22. Several groups of heat transfer components are arranged in the heat insulation wall 22, which are used to accelerate the heat exchange between the cooling water in the heat insulation chamber 19 and the material in the smoke inlet chamber 12 when the solenoid valve is opened. The heat transfer component includes a liquid inlet pump, an evaporation pipe 31, an expansion valve 32 and a condensation pipe 33 connected in sequence. Coolant is arranged to flow in the heat transfer component; in one embodiment, the coolant can be liquid water. The liquid inlet pump and the expansion valve 32 are arranged in the heat insulation wall 22, the evaporation pipe 31 and the condensation pipe 33 extend out of the heat insulation wall 22, and the evaporation pipe 31 is located in the smoke inlet chamber 12, and the condensation pipe 33 is located in the heat insulation chamber 19. After the coolant flows into the evaporation pipe 31, it changes from liquid to gas and absorbs heat; after the coolant flows into the condensation pipe 33, it changes from gas to liquid and releases heat. When the liquid inlet pump and the expansion valve 32 are in the closed state, the coolant in the heat transfer component is in a static state.

[0039] The liquid inlet pump includes a housing 14 and a piston 16 slidably disposed in the housing 14. In one embodiment, the axis of the housing 14 is disposed in a horizontal direction. A coolant inlet pipe 34 and a coolant outlet pipe 35 are fixedly disposed on the outer peripheral surface of the housing 14. Preferably, the coolant inlet pipe 34 and the coolant outlet pipe 35 are respectively disposed on both sides of the housing 14; the coolant inlet pipe 34 is connected to the evaporation pipe 31, and the coolant outlet pipe 35 is connected to the condensation pipe 33.

[0040] The outlet of the coolant inlet pipe 34 is provided with a liquid inlet plug 36, and the inlet of the coolant outlet pipe 35 is provided with a liquid outlet plug 37; the ends of the liquid inlet plug 36 and the liquid outlet plug 37 are fixed with a limit plate 23, the limit plate 23 on the liquid inlet plug 36 abuts against the outlet of the coolant inlet pipe 34, and the limit plate 23 on the liquid outlet plug 37 abuts against the inlet end 52 of the coolant outlet pipe 35. A return spring 38 is provided between the liquid inlet plug 36 and the coolant inlet pipe 34, and between the liquid outlet plug 37 and the coolant outlet pipe 35.

[0041] Specifically, when the piston 16 moves away from the top surface of the shell 14, the internal pressure of the shell 14 is less than the external pressure, the liquid inlet plug 36 moves inwardly of the shell 14, and a gap appears between the limit plate 23 on the liquid inlet plug 36 and the coolant inlet pipe 34, and the coolant in the evaporator tube 31 enters the shell 14 through the coolant inlet pipe 34; conversely, when the piston 16 moves toward the top surface of the shell 14, the coolant enters the condenser tube 33 through the coolant outlet pipe 35.

[0042] It should be noted that the coolant changes from gas to liquid after releasing heat in the evaporator, and is compressed by the piston 16 after passing through the liquid inlet pump, which increases the pressure and temperature of the coolant. After the high-temperature and high-pressure coolant enters the condenser 33, it exchanges heat with the cooling water in the insulation chamber 19, releasing heat and changing from liquid to gas. Several water wheels 4 are rotatably arranged on the insulation wall 22 of the insulation chamber 19, and the cooling water in the insulation chamber 19 will drive the water wheels 4 to rotate during the flow process; several wheel plates 41 are evenly distributed on the outer peripheral surface of the water wheel 4.

[0043] One side of the water wheel 4 is connected to a transmission wheel 1 42 through a bevel gear set 45. Preferably, the transmission wheel 1 42 is connected to the bevel gear set 45 through a connecting shaft 44. A transmission wheel 2 43 and an eccentric wheel 46 that mesh with the transmission wheel 1 42 are rotatably arranged in the heat insulation wall 22. The transmission wheel 2 43 is coaxially fixed to the eccentric wheel 46. The eccentric shaft of the eccentric wheel 46 is hinged to the bottom end of the piston 16 through the connecting rod 18; during the rotation of the eccentric wheel 46, the piston 16 reciprocates in the housing 14. Specifically, after the solenoid valve is opened, the cooling water in the heat insulation chamber 19 is in a flowing state, and the water wheel 4 rotates and drives the coolant circulation through the piston 16.

[0044] The heat insulation wall 22 is provided with a wheel groove 47 for accommodating the water wheel 4, and a stopper 48 is fixed on the groove wall of the wheel groove 47; the axis of the water wheel 4 is provided with a stopper groove 49 for accommodating the stopper 48. The stopper 48 is an electromagnet, and the stopper 48 can be magnetically adsorbed with the stopper groove 49 after being energized.

[0045] The expansion valve 32 includes a valve body 5 and a valve core 51; the inlet end 52 and the outlet end 58 of the valve body 5 are fixedly arranged on the outer peripheral surface of the valve body 5 respectively; the inlet end 52 of the valve body 5 is connected to the condenser tube 33, and the outlet end 58 is connected to the evaporator tube 31. A liquid flow channel 55 is coaxially arranged in the valve body 5; the valve core 51 is penetrated in the liquid flow channel 55. A liquid cavity 56 is arranged at the inlet and outlet of the liquid flow channel 55 in the valve body 5, and the diameter of the liquid cavity 56 is larger than the diameter of the liquid flow channel 55. The end of the valve core 51 is connected to the top surface of the liquid cavity 56. Specifically, a connecting groove 57 is opened on the top surface of the liquid cavity 56, and the end of the valve core 51 is slidably arranged in the connecting groove 57; a magnet is fixedly arranged on the top surface of the connecting groove 57, and the magnet is an electromagnet; a metal sheet 53 that can be magnetically attracted to the magnet is fixedly arranged on the end of the valve core 51. A compression spring 54 is fixedly arranged between the top surface of the liquid cavity 56 and the valve core 51, which is used to drive the valve core 51 to reset in a direction away from the magnet.

[0046] The end of the valve core 51 away from the magnet is fixed with a sealing liquid disk; the end of the liquid flow channel 55 away from the magnet is provided with a sealing liquid groove that can be plugged into the sealing liquid disk. Specifically, after the magnet is energized, the valve core 51 moves and makes the sealing liquid disk plug into the sealing liquid groove, and the liquid flow channel 55 is in a blocked state; otherwise, the liquid flow channel 55 is in a flowing state. The magnet is connected in series with the stopper 48 and is connected to the second magnetic valve switch; when the guide piece 26 is in a separated state from the second magnetic valve switch, the magnet and the stopper 48 are in a conducting state; after the guide piece 26 contacts the second magnetic valve switch, the magnet and the stopper 48 are disconnected from the power supply.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for comprehensive utilization of waste heat from a ring cooler, comprising an annular base (1) and a revolving frame (11) fixedly mounted on the annular base (1), wherein a smoke inlet chamber (12) is fixedly mounted on the top of the revolving frame (11), characterized in that: A heat-insulating chamber (19) is fixedly provided on the annular base (1); a heat-insulating liquid is stored in the heat-insulating chamber (19); a contact groove (25) is provided on the partition plate (3) between two adjacent heat-insulating chambers (19); a contact piece (24) is slidably provided in the contact groove (25); and two ends of the contact piece (24) are respectively in contact with the heat-insulating liquid in the two adjacent heat-insulating chambers (19).

2. The device for comprehensive utilization of waste heat from an annular cooler according to claim 1, characterized in that: A liquid outlet pipe (21) is fixedly provided on the bottom surface of the heat-insulating chamber (19); a solenoid valve is provided on the liquid outlet pipe (21); a guide piece (26) is fixedly provided on the side wall of the contact member (24); a guide groove for accommodating the guide piece (26) is provided on the inner wall of the contact groove (25); a second magnetic valve switch is provided in the guide groove; and the solenoid valve on the liquid outlet pipe (21) is connected to the second magnetic valve switch.

3. The device for comprehensive utilization of waste heat from an annular cooler according to claim 2, characterized in that: A magnetic block (17) is fixedly disposed on the side wall of the guide groove, and the magnetic block (17) is an electromagnet; the magnetic block (17) is electrically connected to the second magnetic valve switch; and a metal block capable of magnetically adsorbing the magnetic block (17) is fixedly disposed on the side wall of the guide plate (26).

4. The device for comprehensive utilization of waste heat from an annular cooler according to claim 1, characterized in that: A liquid inlet pipe (2) is fixedly provided on the top surface of the heat-insulating chamber (19); a solenoid valve is provided on the liquid inlet pipe (2); a floating tube is fixedly provided on the side wall of the heat-insulating chamber (19); a floating ball is provided inside the floating tube; a magnetic valve switch 1 is provided at the top end of the floating tube; and the solenoid valve of the liquid inlet pipe (2) is connected to the magnetic valve switch 1.

5. The device for comprehensive utilization of waste heat from annular cooler according to claim 1, characterized in that: A plurality of groups of heat transfer components are arranged on the heat insulation wall (22) between the heat insulation chamber (19) and the smoke inlet chamber (12), and the heat transfer components include a liquid inlet pump, an evaporation tube (31), an expansion valve (32) and a condensation tube (33) connected in sequence; a coolant flows in the heat transfer components; the evaporation tube (31) is located in the smoke inlet chamber (12), and the condensation tube (33) is located in the heat insulation chamber (19).

6. The device for comprehensive utilization of waste heat from annular cooler according to claim 5, characterized in that: The liquid inlet pump comprises a housing (14) and a piston (16) slidably arranged in the housing (14); a coolant inlet pipe (34) and a coolant outlet pipe (35) are fixedly arranged on the outer peripheral surface of the housing (14); an inlet plug (36) is arranged at the outlet of the coolant inlet pipe (34), and an outlet plug (37) is arranged at the inlet of the coolant outlet pipe (35); and a return spring (38) is arranged on both the inlet plug (36) and the outlet plug (37).

7. The device for comprehensive utilization of waste heat from annular cooler according to claim 6, characterized in that: A plurality of water wheels (4) are rotatably arranged on the heat insulation wall (22); a transmission wheel 1 (42) is coaxially connected to one side of the water wheel (4); a transmission wheel 2 (43) meshing with the transmission wheel 1 (42) and an eccentric wheel (46) are rotatably arranged inside the heat insulation wall (22); the transmission wheel 2 (43) is coaxially fixedly connected to the eccentric wheel (46); and the eccentric wheel (46) is hinged to the piston (16) via a connecting rod (18).

8. The device for comprehensive utilization of waste heat from annular cooler according to claim 7, characterized in that: The heat-insulating wall (22) is provided with a wheel groove (47) for accommodating the water wheel (4), and a stopper (48) is fixedly arranged in the wheel groove (47); a stopper groove (49) for accommodating the stopper (48) is provided at the axis of the water wheel (4); and the stopper (48) is an electromagnet.

9. The device for comprehensive utilization of waste heat from an annular cooler according to claim 5, characterized in that: The expansion valve (32) comprises a valve body (5) and a valve core (51); a liquid flow channel (55) is coaxially arranged in the valve body (5); the valve core (51) is inserted into the liquid flow channel (55); a liquid cavity (56) is arranged on both sides of the liquid flow channel (55) in the valve body (5); a connecting groove (57) is provided on the top surface of the liquid cavity (56), and the end of the valve core (51) is slidably arranged in the connecting groove (57); a magnet is fixedly arranged on the top surface of the connecting groove (57), and the magnet is an electromagnet; a metal sheet (53) that can be magnetically attracted to the magnet is fixedly arranged at the end of the valve core (51); and a compression spring (54) is fixedly arranged between the top surface of the liquid cavity (56) and the valve core (51).

10. A method for comprehensive utilization of waste heat from a ring cooler, characterized in that: The ring cooler waste heat comprehensive utilization device described in any one of claims 1 to 9 is used to recover the leaked heat of the ring cooler.

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