Waste incineration waste heat boiler

Abstract

The utility model discloses a waste incineration waste heat boiler which comprises a machine frame, a cylindrical boiler body arranged on the machine frame, a transmission box arranged above the boiler body, a driving box arranged at the top of the transmission box, an air inlet pipe arranged in the transmission box, and a rotating connector installed at the upper end of the air inlet pipe. An outer pipe of the rotary joint is fixedly installed on the outer top of the driving box through a support and communicated with a first guide pipe, an inner rotary pipe of the rotary joint is communicated with the upper end of an air inlet pipe, the air inlet pipe is driven by a driving mechanism to rotate, the lower end of the air inlet pipe penetrates through the bottom of the transmission box and the top of the furnace body and is communicated with an S-shaped heat exchange pipe, and the heat exchange pipe is coiled in the furnace body in an S shape. The S-shaped heat exchange pipe is arranged in the boiler, and the stirring rod is combined to stir water in the boiler body, so that the heat exchange pipe is in full contact with the water in the boiler body, the heat exchange efficiency is improved, and sufficient and effective heat exchange is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage treatment equipment, and more specifically, to a waste heat boiler for garbage incineration. Background Art

[0002] A waste heat boiler is a boiler that utilizes the sensible heat in industrial waste gases, waste materials, or sewage in various industrial production processes or (and) the calorific value generated after the combustion of its combustible substances.

[0003] Or in the four-cycle equipment of refined oil (or gas), a boiler that utilizes the calorific value of the high-temperature flue gas discharged from a small steam turbine. A waste heat boiler for garbage incineration is an energy-saving boiler that uses the high-temperature flue gas generated by garbage incineration to heat water to produce hot water or steam.

[0004] The utility model patent with the publication number of CN212673164U discloses a waste heat boiler for garbage incineration, which includes a boiler body, a steel frame, and a steam drum. The boiler body is fixed on the steel frame, and the steam drum is located at the top of the boiler body and fixedly connected to the steel frame. Inside the boiler body, there are successively a first flue, a second flue, a third flue, and a horizontal flue. A dust inlet is provided at the bottom of the first flue. Membrane water walls are provided on the inner walls of the first flue, the second flue, and the third flue. A number of partitions are successively provided in the horizontal flue from left to right. High-pressure water gun assemblies are provided on the partitions. A superheater, an evaporator, and an economizer are respectively installed between the partitions. The surfaces of the tube bodies of the superheater and the membrane water walls are both subjected to surfacing treatment with nickel-based alloy materials.

[0005] For the waste heat boiler for garbage incineration designed comprehensively above, the existing structure design of the waste heat boiler for garbage incineration is not good. The heat exchange efficiency between the high-temperature flue gas and the water inside the boiler is relatively low after passing through the inside of the boiler, resulting in an unsatisfactory utilization effect of the waste heat after garbage incineration. There is still a phenomenon that a large amount of high-temperature air flows out of the boiler without effectively completing heat exchange inside the boiler. Content of the Utility Model

[0006] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a waste heat boiler for garbage incineration, which realizes full contact between the heat exchange tubes and the water in the furnace body by arranging S-shaped heat exchange tubes in the boiler and combining with stirring rods to stir the water in the furnace body, so as to improve the heat exchange efficiency and achieve full and effective heat exchange.

[0007] To achieve the above purpose, the present utility model provides the following technical solutions:

[0008] A waste incineration waste heat boiler includes a frame. A cylindrical furnace body is arranged on the frame. A transmission box is arranged above the furnace body. A drive box is arranged on the top of the transmission box. An air inlet pipe is coaxially arranged at the central axis position of the furnace body corresponding to the transmission box. The upper end of the air inlet pipe passes through the top of the transmission box and the bottom and top of the drive box, and a rotary joint is installed. The outer pipe of the rotary joint is fixedly installed on the outer top of the drive box through a bracket and is communicated with a first conduit. Its inner rotating pipe is communicated with the upper end of the air inlet pipe. The air inlet pipe is driven by a driving mechanism to rotate. Its lower end passes through the bottom of the transmission box and the top of the furnace body and is communicated with an "S"-shaped heat exchange pipe. The heat exchange pipe spirals in the furnace body in an "S" shape. Its lower end is communicated with an exhaust pipe coaxially arranged with the air inlet pipe. The lower end of the exhaust pipe passes through the bottom of the furnace body and a rotary joint is installed. The outer pipe of the rotary joint is fixedly installed on the outer bottom of the furnace body through a bracket and is communicated with a second conduit. Its inner rotating pipe is communicated with the lower end of the exhaust pipe;

[0009] A first gear is coaxially fixed on the outer circumference of the air inlet pipe in the transmission box. Two second gears are symmetrically engaged on both sides of the first gear. The second gears are coaxially fixed with driven shafts. The upper ends of the driven shafts are rotationally supported on the inner top of the transmission box through bearings. Their lower ends pass through the bottom of the transmission box and the top of the furnace body and extend into the furnace body and are coaxially fixed with rotating shafts. Stirring rods are arranged on the rotating shafts;

[0010] Both the air inlet pipe and the exhaust pipe are rotationally connected with the furnace body through sealed bearings. The driven shaft is rotationally connected with the inner top of the furnace body through a sealed bearing. A water exchange pipe is arranged at one side of the furnace body.

[0011] A further setting of the present utility model is that the driving mechanism includes a motor fixed on the outer top of the drive box on one side of the air inlet pipe. The output shaft of the motor passes through the top of the drive box and is coaxially fixed with a driving shaft. The lower end of the driving shaft is rotationally supported on the inner bottom of the drive box through a bearing. A driving gear is coaxially fixed on the driving shaft. A driven gear is coaxially fixed on the outer circumference of the air inlet pipe. The driving gear is engaged with the driven gear.

[0012] A further setting of the present utility model is that the diameter of the driving gear is smaller than that of the driven gear.

[0013] A further setting of the present utility model is that a solenoid valve is arranged on the water exchange pipe.

[0014] In summary, the present utility model has the following beneficial effects:

[0015] By arranging an "S"-shaped heat exchange pipe inside the furnace body and starting the motor, the motor drives the driving mechanism, the first gear, and the two second gears to rotate, thereby driving the stirring rod to stir the water inside the furnace body, so as to achieve full contact between the heat exchange pipe and the water inside the furnace body, improve the heat exchange efficiency, and achieve sufficient and effective heat exchange;

[0016] By arranging a driving mechanism and making the diameter of the driving gear smaller than that of the driven gear, it has a speed reduction effect and can realize the slow rotation of the rotating shaft;

[0017] By arranging a solenoid valve on the water exchange pipe, the opening and closing of the water exchange pipe can be conveniently realized according to requirements. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Reference numerals: 1, frame; 2, transmission box; 3, drive box; 4, intake pipe; 5, first conduit; 6, heat exchange pipe; 7, exhaust pipe; 8, second conduit; 9, first gear; 10, second gear; 11, driven shaft; 12, rotating shaft; 13, stirring rod; 14, water exchange pipe; 15, motor; 16, driving shaft; 17, driving gear; 18, driven gear; 19, solenoid valve; 20, furnace body; 21, rotary joint. Detailed Embodiments

[0021] The present invention will be described in detail below with reference to the drawings.

[0022] Embodiment: A waste incineration waste heat boiler, which arranges an "S"-shaped heat exchange pipe inside the boiler and combines a stirring rod to stir the water inside the furnace body, so as to achieve full contact between the heat exchange pipe and the water inside the furnace body, and improve the heat exchange efficiency and achieve sufficient and effective heat exchange.

[0023] Refer to Figure 1 、 Figure 2, including a frame 1, on which a cylindrical furnace body 20 is provided. Above the furnace body 20, a transmission box 2 is provided. On the top of the transmission box 2, a driving box 3 is provided. Inside the transmission box 2, an air inlet pipe 4 is coaxially arranged corresponding to the central axis position of the furnace body 20. The upper end of the air inlet pipe 4 passes through the top of the transmission box 2 and the bottom and top of the driving box 3, and a rotary joint 21 is installed. The outer pipe of the rotary joint 21 is fixedly installed on the outer top of the driving box 3 through a bracket and is connected to a conduit 5. Its inner rotating pipe is connected to the upper end of the air inlet pipe 4. The air inlet pipe 4 is driven to rotate by a driving mechanism. Its lower end passes through the bottom of the transmission box 2 and the top of the furnace body 20 and is connected to an "S"-shaped heat exchange pipe 6. The heat exchange pipe 6 spirals in an "S" shape inside the furnace body 20. Its lower end is connected to an exhaust pipe 7 coaxially arranged with the air inlet pipe 4. The lower end of the exhaust pipe 7 passes through the bottom of the furnace body 20 and is installed with a rotary joint 21. The outer pipe of the rotary joint 21 is fixedly installed on the outer bottom of the furnace body 20 through a bracket and is connected to a conduit 8. Its inner rotating pipe is connected to the lower end of the exhaust pipe 7. On the outer circumference of the air inlet pipe 4 located in the transmission box 2, a gear 9 is coaxially fixed. On both sides of the gear 9, two gears 10 are symmetrically engaged. The gears 10 are coaxially fixed with a driven shaft 11. The upper end of the driven shaft 11 is rotationally supported on the inner top of the transmission box 2 through a bearing. Its lower end passes through the bottom of the transmission box 2 and the top of the furnace body 20 and extends into the furnace body and is coaxially fixed with a rotating shaft 12. On the rotating shaft 12, stirring rods 13 are arranged. The air inlet pipe 4, the exhaust pipe 7 and the furnace body 20 are all rotationally connected through sealed bearings. The driven shaft 11 is rotationally connected to the inner top of the furnace body 20 through a sealed bearing. On the side wall of the furnace body 20, a water exchange pipe 14 is provided. On the water exchange pipe 14, a solenoid valve 19 is provided to facilitate the opening and closing of the water exchange pipe 14.

[0024] The driving mechanism includes a motor 15 fixed on the outer top of the driving box 3 on one side of the air inlet pipe 4. The output shaft of the motor 15 passes through the top of the driving box 3 and is coaxially fixed with a driving shaft 16. The lower end of the driving shaft 16 is rotationally supported on the bottom inside the driving box 3 through a bearing. On the driving shaft 16, a driving gear 17 is coaxially fixed. On the outer circumference of the air inlet pipe 4, a driven gear 18 is coaxially fixed. The driving gear 17 meshes with the driven gear 18. The diameter of the driving gear 17 is smaller than that of the driven gear 18. This setting has a speed reduction effect and can realize the slow rotation of the rotating shaft 12.

[0025] An "S"-shaped heat exchange pipe 6 is arranged inside the furnace body 20. Start the motor 15, so that the motor 15 drives the driving mechanism, the gear 9 and the two gears 10 to rotate, and then drives the stirring rods 13 to stir the water inside the furnace body 20 to achieve full contact between the heat exchange pipe 6 and the water inside the furnace body 20, improve the heat exchange efficiency and achieve full and effective heat exchange; start the motor 15, the motor 15 drives the driving gear 17, the driven gear 18, and then drives the gear 9 and the gears 10 to rotate to realize the rotation of the rotating shaft 12.

[0026] The above are only the preferred embodiments of the present utility model. The protection scope of the present utility model is not limited to the above embodiments. Any technical solutions falling within the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present utility model should also be regarded as within the protection scope of the present utility model.

Claims

1. A waste incineration waste heat boiler, characterized in that: The invention comprises a frame, on which a cylindrical furnace body is arranged, a transmission box is arranged above the furnace body, a drive box is arranged on the top of the transmission box, an air inlet pipe is coaxially arranged in the transmission box at a position corresponding to the central axis of the furnace body, the upper end of the air inlet pipe passes through the top of the transmission box and the bottom of the drive box, and a rotating joint is installed on the top, the outer tube of the rotating joint is fixedly installed on the outer top of the drive box through a bracket, and is connected with a conduit 1, and its inner rotating tube is connected with the upper end of the air inlet pipe, the air inlet pipe is driven to rotate by a driving mechanism, the lower end of the air inlet pipe passes through the bottom of the transmission box and the top of the furnace body and is connected with an "S"-shaped heat exchange tube, the heat exchange tube is spiraled in the furnace body in an S shape, the lower end of the air inlet pipe is connected with an exhaust pipe coaxially arranged with the air inlet pipe, the lower end of the exhaust pipe passes through the bottom of the furnace body, and is installed with a rotating joint, the outer tube of the rotating joint is fixedly installed on the outer bottom of the furnace body through a bracket, and is connected with a conduit 2, and its inner rotating tube is connected with the lower end of the exhaust pipe; A gear 1 is coaxially fixed on the outer circumference of the air intake pipe located in the transmission case, two gears 2 are symmetrically meshed on both sides of the gear 1, a driven shaft is coaxially fixed to the gear 2, the upper end of the driven shaft is rotatably supported on the inner top of the transmission case through a bearing, and the lower end thereof passes through the bottom of the transmission case and the top of the furnace body to extend to the inside of the furnace body and is coaxially fixed with a rotating shaft, and a stirring rod is arranged on the rotating shaft; The air inlet pipe, the exhaust pipe and the furnace body are all rotatably connected via closed bearings, the driven shaft is rotatably connected to the top of the furnace body via a closed bearing, and a water exchange pipe is arranged at one side of the furnace body.

2. The waste incineration waste heat boiler according to claim 1, characterized in that: The driving mechanism includes a motor fixed on the top outside the driving box and located on one side of the intake pipe. The output shaft of the motor passes through the top of the driving box and is coaxially fixed with a driving shaft. The lower end of the driving shaft is rotatably supported on the bottom of the driving box through a bearing. A driving gear is coaxially fixed on the driving shaft, and a driven gear is coaxially fixed on the outer circumference of the intake pipe. The driving gear is meshed with the driven gear.

3. The waste incineration waste heat boiler according to claim 2, characterized in that: The diameter of the driving gear is smaller than that of the driven gear.

4. The waste incineration waste heat boiler according to claim 1, characterized in that: A solenoid valve is arranged on the water exchange pipe.

Images