Waste incineration waste heat recovery device

Abstract

The utility model discloses a waste incineration waste heat recovery device which comprises a cylindrical combustion furnace, the outer circumference of the combustion furnace is sleeved with a waste heat recovery box, the top of the combustion furnace is provided with a transmission mechanism, the transmission mechanism comprises a transmission box, a rotating shaft is arranged at the middle axis position in the transmission box, and the rotating shaft is driven by a driving assembly to rotate. A supporting rod perpendicular to the rotating shaft is fixed to the lower end of the rotating shaft, two stirring shafts are rotationally supported at the two ends of the supporting rod, an inner gear ring is fixed to the circumference of the inner wall of the transmission box, two gears meshed with the inner gear ring are coaxially fixed to the two stirring shafts, and a plurality of stirring rods are distributed at the lower ends of the two stirring shafts; a water inlet pipe and a water outlet pipe are communicated with the bottom of the waste heat recycling box, a gas outlet pipe is communicated with the top of the combustion furnace, a throwing door is arranged on the side wall of the combustion furnace, and efficient waste heat recycling of the wall of the combustion furnace can be achieved by arranging the waste heat recycling box and fully stirring water in the waste heat recycling box through a stirring rod.

Description

Technical Field

[0001] The utility model relates to the technical field of waste incineration, and more specifically, to a waste incineration waste heat recovery device. Background Art

[0002] A large amount of heat is generated when waste is incinerated, but these heats are not utilized, resulting in a certain waste. Currently, the waste heat recovery devices used for waste incineration usually use the heat generated during waste incineration to heat water bodies. However, the current waste heat recovery devices for waste incineration cannot make full use of the heat on the outer wall of the combustion furnace.

[0003] Currently, the utility model patent with the patent number CN202021834633.X discloses a waste heat recovery and utilization device for waste incineration in a smart city, specifically related to the technical field of smart cities. It includes a housing. An incineration device is arranged inside the housing. A receiving plate is fixedly installed on one side of the inner cavity of the housing. An incineration pipe is fixedly installed on one side of the inner cavity of the housing. An incineration chamber is arranged inside the housing near the incineration pipe. A feed pipe is fixedly installed on the top surface of the housing. Through the cooperation among the hot air pipe, the curved pipe and the water outlet pipe, the heat generated by incineration can be made to contact the curved pipe through the hot air pipe and exchange heat with the curved pipe, so as to heat the water inside the curved pipe and export it through the water outlet pipe for people to drink or provide heating for people, avoiding waste of resources, and thus realizing the recovery and utilization of waste heat. However, the current waste heat recovery devices for waste incineration cannot make full use of the heat on the outer wall of the combustion furnace, and the heat loss on the outer wall of the combustion furnace will cause a certain waste of thermal energy. Therefore, a waste incineration waste heat recovery device needs to be proposed. Summary of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to propose a waste incineration waste heat recovery device. By arranging a waste heat recovery box on the outer wall of the combustion furnace, arranging a stirring shaft in the waste heat recovery box, adding water into the waste heat recovery box, and during the combustion of the combustion furnace, the stirring rods on the stirring shaft fully stir the water, the heat on the combustion furnace wall can be fully recovered.

[0005] The utility model provides the following technical solutions:

[0006] A waste incineration waste heat recovery device includes a cylindrical combustion furnace. A base is arranged at the bottom of the combustion furnace. A waste heat recovery box with an annular cross-section is sleeved on the outer circumference of the combustion furnace. A transmission mechanism is arranged at the top of the combustion furnace;

[0007] The transmission mechanism includes a cylindrical transmission box, which is supported on the top of the combustion furnace through a bottom bracket. A drive box is arranged on the top of the transmission box. A rotating shaft is arranged at the central axis position inside the transmission box. The upper end of the rotating shaft passes through the top of the transmission box and is driven to rotate by a drive assembly inside the drive box. A support rod perpendicular to the rotating shaft is fixed at the lower end of the rotating shaft. Two symmetric stirring shafts are rotatably supported on the lower bottom surfaces at both ends of the support rod. An internal gear ring is fixedly arranged on the inner wall circumference of the transmission box. Two gears meshing with the internal gear ring are coaxially fixed on the two stirring shafts. The lower ends of the two stirring shafts pass through the bottom of the transmission box and the top of the waste heat recovery box and extend into the interior of the waste heat recovery box. Circular through-holes corresponding to the movement trajectories of the stirring shafts are arranged at the bottom of the transmission box and the top of the waste heat recovery box. A plurality of stirring rods are arranged on the stirring shafts located inside the waste heat recovery box;

[0008] A water inlet pipe and a water outlet pipe are connected to the bottom position of the waste heat recovery box. A solenoid valve I and a water pump I are arranged on the water inlet pipe. A solenoid valve II and a water pump II are arranged on the water outlet pipe;

[0009] An air outlet pipe is connected to the top of the combustion furnace. A feeding door for putting garbage is arranged on the side wall of the combustion furnace.

[0010] A further setting of the present utility model is that the drive assembly is a worm and worm gear transmission. A motor is fixedly arranged on the outer wall of the drive box. The output shaft of the motor is coaxially fixed with the worm. The worm gear is coaxially fixed with the upper end of the rotating shaft.

[0011] A further setting of the present utility model is that a heat exchange box filled with water is arranged at one side position of the combustion furnace. The air outlet pipe is connected to an air delivery pipe through a quick connector. The air delivery pipe extends into the heat exchange box and spirals in an S shape inside the heat exchange box. Its outer end passes through the side wall of the heat exchange box and extends to the outside of the heat exchange box. A water pipe is connected to the side wall of the heat exchange box. A solenoid valve is arranged on the water pipe.

[0012] In summary, the present utility model has the following beneficial effects:

[0013] By arranging a waste heat recovery box on the outer wall of the combustion furnace and arranging a stirring shaft in the waste heat recovery box, opening solenoid valve 1, closing solenoid valve 2, and starting water pump 1 to add water to the waste heat recovery box, then closing solenoid valve 1 and water pump 1, putting garbage into the combustion furnace, igniting the garbage in the combustion furnace, and removing the gas transmission pipe from the gas outlet pipe, starting the motor, the motor drives the worm and worm gear and then drives the rotating shaft to rotate. The two gears rotate around the rotating shaft as the axis. At the same time, in cooperation with the internal gear ring, the two gears rotate around their own axes while revolving, thereby fully stirring the water in the waste heat recovery box to fully recover the heat on the combustion furnace wall. When it is necessary to collect the water in the waste heat recovery box, only need to open solenoid valve 2 and water pump 2. The setting of the worm and worm gear can make the rotating shaft rotate slowly;

[0014] By setting the driving component as a worm and worm gear, it has a decelerating effect and makes the rotating shaft rotate slowly;

[0015] By arranging a heat exchange box filled with water at one side of the combustion furnace, the gas outlet pipe is connected to the gas transmission pipe through a quick connector, so that the gas transmission pipe extends into the heat exchange box. Open the solenoid valve, add water to the heat exchange box through a water pipe, and then close the solenoid valve. When it is necessary to recover the heat of the combustion flue gas, turn off the motor, connect the gas transmission pipe and the gas outlet pipe through a quick connector, and the flue gas enters the heat exchange box through the S-shaped gas transmission pipe and makes full contact with the water in the heat exchange box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a top view of the structure of the combustion furnace and the waste heat recovery box;

[0018] Figure 3 is a schematic diagram of the structure of the gear and the internal gear ring.

[0019] Reference numerals: 1, combustion furnace; 2, base; 3, waste heat recovery box; 4, transmission box; 5, drive box; 6, rotating shaft; 7, support rod; 8, stirring shaft; 9, internal gear ring; 10, gear; 11, stirring rod; 12, water inlet pipe; 13, water outlet pipe; 14, solenoid valve 1; 15, water pump 1; 16, solenoid valve 2; 17, water pump 2; 18, gas outlet pipe; 19, feeding door; 20, motor; 21, heat exchange box; 22, gas transmission pipe; 23, water pipe; 24, solenoid valve; 25, circular through groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present utility model will be described in detail below with reference to the accompanying drawings.

[0021] Embodiment: A waste incineration waste heat recovery device, which sets a waste heat recovery box on the outer wall of the combustion furnace, sets a stirring shaft in the waste heat recovery box, adds water into the waste heat recovery box, and during the combustion process of the combustion furnace, the stirring rods on the stirring shaft fully stir the water, so that the heat on the combustion furnace wall can be fully recovered.

[0022] Reference Figure 1 、 Figure 2 , a waste incineration waste heat recovery device, including a cylindrical combustion furnace 1, a base 2 is arranged at the bottom of the combustion furnace 1, a waste heat recovery box 3 with an annular cross-section is sleeved on the outer circumference of the combustion furnace, a transmission mechanism is arranged at the top of the combustion furnace, the transmission mechanism includes a cylindrical transmission box 4, the transmission box 4 is supported on the top of the combustion furnace by a bottom bracket, a drive box 5 is arranged at the top of the transmission box 4, a rotating shaft 6 is arranged at the central axis position in the transmission box 4, the upper end of the rotating shaft 6 passes through the top of the transmission box 4 and is driven to rotate by a drive component in the drive box 5, combined Figure 3 , a vertical support rod 7 perpendicular to it is fixed at the lower end of the rotating shaft 6, two symmetric stirring shafts 8 are rotatably supported on the lower bottom surfaces at both ends of the support rod 7, an internal gear ring 9 is fixed on the inner wall circumference of the transmission box 4, two gears 10 meshing with the internal gear ring 9 are coaxially fixed on the two stirring shafts 8, the lower ends of the two stirring shafts 8 pass through the bottom of the transmission box 4 and the top of the waste heat recovery box 3 and extend into the interior of the waste heat recovery box 3, circular through holes 25 corresponding to the movement tracks of the stirring shafts 8 are arranged at the bottom of the transmission box 4 and the top of the waste heat recovery box 3, a number of stirring rods 11 are arranged on the stirring shafts 8 located in the waste heat recovery box 3, a water inlet pipe 12 and a water outlet pipe 13 are connected at the bottom position of the waste heat recovery box 3, and a solenoid valve one 14 and a water pump one 15 are arranged on the water inlet pipe 12, a solenoid valve two 16 and a water pump two 17 are arranged on the water outlet pipe 13, an air outlet pipe 18 is connected at the top of the combustion furnace, and a feeding door 19 for putting waste is arranged on the side wall of the combustion furnace.

[0023] The drive component is a worm and worm gear drive. A motor 20 is fixed on the outer wall of the drive box 5, the output shaft of the motor 20 is coaxially fixed with the worm, and the worm gear is coaxially fixed with the upper end of the rotating shaft 6.

[0024] Open solenoid valve 14, close solenoid valve 16, and start water pump 15 to add water to the waste heat recovery tank 3. Then close solenoid valve 14 and water pump 15, put the garbage into the combustion furnace 1, ignite the garbage in the combustion furnace 1, and remove the gas transmission pipe 22 from the gas outlet pipe 18. Start the motor 20, the motor 20 drives the worm and worm gear to drive the rotating shaft 6 to rotate, and the two gears 10 rotate around the rotating shaft 6 as the axis. At the same time, in cooperation with the internal gear ring 9, the two gears 10 rotate around their own axes while revolving, so as to fully stir the water in the waste heat recovery tank 3, so as to fully recover the heat on the wall of the combustion furnace 1. When it is necessary to collect the water in the waste heat recovery tank 3, only need to open solenoid valve 16 and water pump 17. The setting of the worm and worm gear can make the rotating shaft 6 rotate slowly.

[0025] Reference Figure 1 , on one side of the combustion furnace 1, there is a heat exchange tank 21 filled with water. The gas outlet pipe 18 is connected to the gas transmission pipe 22 through a quick connector. The gas transmission pipe 22 extends into the heat exchange tank 21 and spirals in an S shape in the heat exchange tank 21. Its outer end passes through the side wall of the heat exchange tank 21 and extends to the outside of the heat exchange tank 21. A water pipe 23 is communicated with the side wall of the heat exchange tank 21, and a solenoid valve 24 is arranged on the water pipe 23. Open the solenoid valve 24, add water to the heat exchange tank 21 through the water pipe 23, and then close the solenoid valve 24. When it is necessary to recover the heat of the combustion flue gas by heat exchange, turn off the motor 20, and the flue gas enters the heat exchange tank 21 through the S-shaped gas transmission pipe 22 and makes full contact with the water in the heat exchange tank 21.

[0026] The above is only the preferred implementation mode of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A waste incineration waste heat recovery device, characterized in that: It comprises a cylindrical combustion furnace, a base is arranged at the bottom of the combustion furnace, a waste heat recovery box with a ring-shaped cross section is sleeved on the outer circumference of the combustion furnace, and a transmission mechanism is arranged on the top of the combustion furnace; The transmission mechanism includes a cylindrical transmission box, which is supported on the top of the combustion furnace through a bottom bracket, a driving box is arranged on the top of the transmission box, and a rotating shaft is arranged at the central axis position in the transmission box, the upper end of the rotating shaft passes through the top of the transmission box and is driven to rotate by a driving assembly in the driving box, a supporting rod perpendicular to the rotating shaft is fixed at the lower end of the rotating shaft, and two symmetrical stirring shafts are rotatably supported on the lower bottom surfaces of both ends of the supporting rod, an inner gear ring is fixed on the circumference of the inner wall of the transmission box, and two gears meshing with the inner gear ring are coaxially fixed on the two stirring shafts, the lower ends of the two stirring shafts pass through the bottom of the transmission box and the top of the waste heat recovery box and extend to the interior of the waste heat recovery box, and circular through grooves corresponding to the moving trajectory of the stirring shaft are arranged at the bottom of the transmission box and the top of the waste heat recovery box, and a plurality of stirring rods are arranged on the stirring shaft located in the waste heat recovery box; A water inlet pipe and a water outlet pipe are connected at the bottom of the waste heat recovery box, and a solenoid valve 1 and a water pump 1 are arranged on the water inlet pipe, and a solenoid valve 2 and a water pump 2 are arranged on the water outlet pipe; An air outlet pipe is connected to the top of the combustion furnace, and a door for throwing garbage is arranged on the side wall of the combustion furnace.

2. The waste incineration waste heat recovery device according to claim 1, characterized in that: The driving assembly is a worm gear transmission, a motor is fixed on the outer wall of the driving box, the output shaft of the motor is coaxially fixed with the worm, and the worm wheel is coaxially fixed with the upper end of the rotating shaft.

3. The waste incineration waste heat recovery device according to claim 1, characterized in that: A heat exchange box filled with water is arranged on one side of the combustion furnace. The air outlet pipe is connected to the air supply pipe through a quick connector. The air supply pipe extends into the heat exchange box and spirals in an S shape in the heat exchange box. The outer end thereof passes through the side wall of the heat exchange box and extends to the outside of the heat exchange box. A water pipe is connected to the side wall of the heat exchange box, and a solenoid valve is arranged on the water pipe.

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