Sludge carbonization device with flue gas recycling structure

Abstract

The utility model relates to the technical field of sludge carbonization, in particular to a sludge carbonization device with a smoke recycling structure, which comprises a mounting base, a rotating shell is fixedly mounted on the outer surface of the mounting base, and a driving motor is fixedly mounted at one end, close to an electric push rod, of the rotating shell. And a rotating cylinder is rotationally mounted in the rotating shell. According to the sludge carbonization device with the flue gas recycling structure, after the combustion flame nozzle is started, sludge particles in the rotating cylinder are heated, the sludge particles are carbonized through heating, and at the moment, the sludge particles can generate a large amount of pyrolysis flue gas; pyrolysis flue gas is fed into the combustion flame nozzle to be combusted and used through starting of the gas suction pump, meanwhile, gas in a pipeline cannot flow back through the one-way valve, the pyrolysis flue gas generated when sludge particles are carbonized can be recycled, energy consumed when the sludge particles are carbonized is reduced, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sludge carbonization technology, specifically a sludge carbonization device equipped with a flue gas recovery and utilization structure. Background Technology

[0002] With the increasing frequency of human activities, many production activities and natural environments such as rivers and ponds generate sludge. These include urban sewage treatment plants, papermaking, printing and dyeing, electroplating, food processing, pharmaceuticals, petrochemicals, and leather processing. This sludge contains various harmful substances and heavy metals. If this sludge is not treated and discharged into the environment, the harmful substances in the sludge will disperse to other places, leading to serious environmental pollution and potential hazards. When treating this sludge, it is necessary to first remove the moisture and adjust its properties, followed by granulation and drying, so that the sludge particles can be carbonized more completely when fed into the carbonization device. However, during the pyrolysis of the sludge particles during carbonization, some flue gas will be generated. This flue gas will contain a large amount of pyrolysis gas. If this pyrolysis gas is discharged directly, it will cause serious energy waste and increase the cost of sludge treatment. Utility Model Content

[0003] The purpose of this invention is to provide a sludge carbonization device with a flue gas recovery and utilization structure to solve the problem of resource waste caused by direct discharge of flue gas as mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a sludge carbonization device with a flue gas recovery and utilization structure, comprising a mounting base, a rotating outer shell fixedly mounted on the outer surface of the mounting base, and electric push rods fixedly mounted on both outer surfaces of one end of the rotating outer shell. A drive motor is fixedly mounted on one end of the rotating outer shell near the electric push rods, and the output end of the drive motor penetrates through the side surface of the rotating outer shell. A rotating cylinder is rotatably mounted inside the rotating outer shell, and support rollers are rotatably mounted on the outer surfaces of both ends inside the rotating outer shell, with the support rollers inside the rotating outer shell fitting against the outer surface of the rotating cylinder. A combustion nozzle is penetrated through the inner surface of one end of the rotating outer shell, and a combustion recovery mechanism is provided between the combustion nozzle and the rotating outer shell. The combustion recovery mechanism facilitates the absorption of pyrolysis gas generated after heating the sludge and discharges it from the combustion nozzle to participate in combustion, thereby reusing the pyrolysis gas while reducing energy waste and saving fuel.

[0005] Preferably, the combustion recovery mechanism includes: an air intake pump, which is fixedly installed on the outer surface of one end of the rotating housing, and the rotating housing is connected to the combustion nozzle pipe. A one-way valve is provided between the air intake pump and the combustion nozzle, and a gas inlet pipe is provided between the combustion nozzle and the one-way valve. The combustion nozzle is designed in an arc shape with side by side.

[0006] Using the above technical solution, the sludge particles inside the rotating cylinder are heated by the ignition and ejection of the combustion nozzle. At this time, the sludge particles will begin to carbonize and release pyrolysis flue gas. The flue gas will float upward and be sent into the combustion nozzle by the suction pump. At the same time, the flammable gas in the combustion nozzle is prevented from escaping through the one-way valve, so that the pyrolysis flue gas emitted from the carbonization of sludge can be recovered and utilized, reducing resource waste and making use of the pyrolysis flue gas.

[0007] Preferably, a hopper is provided at one end of the rotating housing near the drive motor, a gate plate is slidably mounted on the outer surface of one end of the rotating housing, and the outer surface of the gate plate is connected to the output end of the electric push rod. The interior of the end of the rotating housing near the gate plate is designed to be inclined.

[0008] By adopting the above technical solution, the extension and retraction of the electric push rod allows the gate plate to slide inside the rotating shell, so that the sludge particles fed into the hopper on the outer surface of the rotating shell can be sent into the interior of the rotating shell. At the same time, the rotating shell can be closed after feeding is completed, reducing the impact of air entering the interior of the rotating shell on the carbonization of the sludge particles.

[0009] Preferably, the outer surface of the rotating cylinder is uniformly provided with through holes, and a rotating pushing mechanism is provided between the rotating cylinder and the rotating outer shell. The rotating pushing mechanism allows the sludge particles to be uniformly stirred and moved slowly, so that the sludge particles can be better carbonized.

[0010] By adopting the above technical solution, the flame can better heat the sludge particles through the through holes on the outer surface of the rotating cylinder, and the rotating cylinder can push the sludge particles to move and tumble while rotating.

[0011] Preferably, the rotating pushing mechanism includes: a gear ring, which is fixedly installed on the outer surface of the rotating cylinder, and the rotating cylinder and the gear ring are concentrically designed; a drive gear is fixedly installed at the output end of the drive motor, and the drive gear meshes with the gear ring; and a spiral feed bar is fixedly installed inside the rotating cylinder.

[0012] Using the above technical solution, the rotation of the drive motor will drive the drive gear to rotate, causing the gear ring meshing with the drive gear to rotate along with it. This allows the rotating cylinder to rotate inside the mounting base, and the rotation of the spiral feed bar will push the sludge particles to move, allowing the sludge particles to move slowly forward. The sludge particles will also automatically turn over during movement, allowing the sludge particles to be heated and carbonized more evenly.

[0013] Preferably, the interior of the rotating housing near the combustion nozzle is inclined. A first bevel gear is fixedly mounted on the output end of the drive motor. A second bevel gear is rotatably mounted on the outer surface of the rotating housing, and a cam is fixedly mounted on the outer surface of the second bevel gear. The cam and the second bevel gear are concentrically designed. The first bevel gear meshes with the second bevel gear, and the diameter of the first bevel gear is larger than the diameter of the second bevel gear. A push-tapping plate is slidably mounted on the outer surface of the rotating housing, and a spring is fixed between the push-tapping plate and the rotating housing. One end of the outer surface of the rotating housing is in contact with the push-tapping plate, and the outer surface of the other end of the push-tapping plate is in contact with the outer surface of the cam.

[0014] Using the above technical solution, as the rotating drum rotates, the dust in the sludge particles will fall through the through hole. As the rotating drum rotates, it will cause the first bevel gear to rotate, and the second bevel gear meshing with the first bevel gear will rotate along with it. Through the diameter difference between the first bevel gear and the second bevel gear, the cam can rotate faster, which allows the push-tapping plate to move faster. In conjunction with the use of the spring, the push-tapping plate can strike the outer surface of the rotating shell more quickly. The dust that falls into the rotating shell can be moved along the inclined surface inside the rotating shell and collected and discharged by the vibration generated by the tapping.

[0015] Preferably, a discharge pipe pump is fixedly installed on the outer surface of the rotating housing away from the electric push rod, and a slag discharge pump pipe is fixedly installed on the outer surface of the rotating housing near the combustion nozzle. The slag discharge pump pipe and the discharge pipe pump are respectively connected to the mounting base.

[0016] By adopting the above technical solution, the discharge pipe pump can extract the carbonized sludge particles for easy discharge, allowing the powder generated during carbonization to be easily discharged outwards, reducing the impact of air entering the rotating shell on the carbonization of sludge particles.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the sludge carbonization device equipped with a flue gas recovery and utilization structure:

[0018] 1. When the combustible gas in the combustion nozzle is ignited, it will heat the sludge particles in the rotating cylinder. The heating will cause the sludge particles to undergo pyrolysis and carbonization. At this time, the sludge particles will generate a large amount of pyrolysis flue gas. The pyrolysis flue gas is sent into the combustion nozzle for combustion by starting the air pump. At the same time, the combustible gas is prevented from flowing back into the air pump pipe by the one-way valve, so that the pyrolysis flue gas generated during the carbonization of sludge particles can be used, reducing the energy consumed in the carbonization of sludge particles, reducing production costs, and allowing the pyrolysis flue gas to be recycled.

[0019] 2. As the drive motor rotates, it will drive the drive gear to rotate as well. The gear ring meshing with the drive gear can drive the rotating drum to rotate as well. The rotation of the rotating drum drives the spiral feed bar to rotate, so that the sludge particles fed into the rotating drum can be slowly pushed forward by the rotation of the spiral feed bar. At the same time, the rotation of the rotating drum can automatically tumble and stir the sludge particles, so that the sludge particles can be heated evenly while moving forward, reducing the probability of uneven heating and uneven carbonization during sludge particle carbonization, and improving the uniformity of carbonization of the produced sludge particles.

[0020] 3. As the rotating drum rotates, the debris and impurities in the sludge particles will fall through the through holes on the outer surface of the rotating drum and into the bottom of the rotating shell. At this time, as the drive motor rotates, the first bevel gear rotates accordingly, allowing the second bevel gear to drive the cam to rotate as well. Due to the diameter difference between the first and second bevel gears, the cam can rotate faster, allowing the push-tapping plate to be pushed and, in conjunction with the spring, to reciprocate more quickly on the outer surface of the rotating shell. This generates greater vibration when striking the rotating shell, allowing the debris and impurities falling into the rotating shell to be collected along the inclined surface. This ensures that the processed carbonized sludge particles do not contain too many debris and impurities, which would affect the quality. At the same time, it is convenient to collect the debris and impurities and send them out of the rotating shell together. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the mounting base and rotating outer shell of this utility model;

[0022] Figure 2 This is a cross-sectional perspective view of the rotating outer shell and rotating cylinder of this utility model.

[0023] Figure 3 This is a three-dimensional structural diagram of the combustion nozzle and rotating cylinder of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the gear ring and drive gear of this utility model;

[0025] Figure 5This is a three-dimensional structural diagram of the rotating cylinder and spiral feed bar of this utility model;

[0026] Figure 6 This is a three-dimensional structural diagram of the slag discharge pump pipe and the material discharge pump of this utility model;

[0027] Figure 7 This is a schematic diagram of the three-dimensional structure of the second bevel gear and spring of this utility model.

[0028] In the diagram: 1. Mounting base; 2. Rotating outer casing; 3. Combustion nozzle; 4. Suction pump; 5. One-way valve; 6. Gate plate; 7. Electric push rod; 8. Drive motor; 9. Rotating cylinder; 10. Gear ring; 11. Spiral feed bar; 12. Drive gear; 13. First bevel gear; 14. Second bevel gear; 15. Cam; 16. Pushing and striking plate; 17. Spring; 18. Slag discharge pump pipe; 19. Discharge pipe pump. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figure 1-7 This utility model provides a technical solution: a sludge carbonization device with a flue gas recovery and utilization structure, including a mounting base 1, a rotating outer shell 2 fixedly mounted on the outer surface of the mounting base 1, and electric push rods 7 fixedly mounted on both outer surfaces of one end of the rotating outer shell 2. A drive motor 8 is fixedly mounted on one end of the rotating outer shell 2 near the electric push rods 7, and the output end of the drive motor 8 passes through the side surface of the rotating outer shell 2. A rotating cylinder 9 is rotatably mounted inside the rotating outer shell 2, and support rollers are rotatably mounted on the outer surfaces of both ends inside the rotating outer shell 2. The support rollers inside the rotating outer shell 2 are in contact with the outer surface of the rotating cylinder 9. A combustion nozzle 3 is installed through one end of the inner surface of the rotating outer shell 2. A combustion recovery mechanism is provided between the combustion nozzle 3 and the rotating outer shell 2. The combustion recovery mechanism facilitates the absorption of pyrolysis gas generated after heating the sludge and discharges it from the combustion nozzle 3 to participate in combustion. The pyrolysis gas can be reused while reducing energy waste and saving fuel.

[0031] The slag discharge pump pipe 18 and the material discharge pump 19 can be installed and fixed by the mounting base 1, and the rotating outer shell 2 can be fixed and supported. The design of the support rollers makes the rotating cylinder 9 rotate more smoothly on the rotating outer shell 2. The high temperature generated by the flame after the combustion nozzle 3 is ejected can heat the sludge particles without the sludge particles coming into contact with the flame, and promote the carbonization of the sludge particles.

[0032] The combustion recovery mechanism includes: an air intake pump 4, which is fixedly installed on the outer surface of one end of the rotating housing 2, and the rotating housing 2 is connected to the combustion nozzle 3 pipe. A one-way valve 5 is provided between the air intake pump 4 and the combustion nozzle 3, and a gas inlet pipe is provided between the combustion nozzle 3 and the one-way valve 5. The combustion nozzle 3 is designed in an arc shape with side by side.

[0033] As combustible gas is ejected from the combustion nozzle 3 and ignited, the heat generated by the flame from the combustion nozzle 3 heats the sludge particles above. After being heated, the sludge particles gradually carbonize and produce pyrolysis flue gas. At this time, with the intake and output of the suction pump 4, the pyrolysis flue gas will be sent into the combustion nozzle 3 through the pipeline to participate in the combustion. The design of the one-way valve 5 prevents the combustible gas from flowing back out of the suction pump 4, so that the pyrolysis flue gas generated during the carbonization of sludge particles can be recycled and reused, reducing the amount of combustible gas used and lowering the cost of producing carbonized sludge.

[0034] A hopper is provided at one end of the rotating housing 2 near the drive motor 8. A gate plate 6 is slidably installed on the outer surface of one end of the rotating housing 2, and the outer surface of the gate plate 6 is connected to the output end of the electric push rod 7. The interior of the rotating housing 2 near the gate plate 6 is designed to be inclined.

[0035] During feeding, simply put the sludge particles into the hopper of the rotating shell 2, and then start the electric push rod 7 to drive the gate plate 6 to move, so that the gate plate 6 can open and close, allowing the sludge particles to fall into the interior of the rotating shell 2 and roll into the rotating cylinder 9 through the inclined surface inside the rotating shell 2. The gate plate 6 can store the sludge particles in the hopper on the outer surface of the rotating shell 2, and at the same time reduce the amount of external air entering the interior of the rotating shell 2, reducing the impact of air on the carbonization of sludge particles.

[0036] The outer surface of the rotating cylinder 9 is uniformly provided with through holes, and a rotating pushing mechanism is provided between the rotating cylinder 9 and the rotating outer shell 2. The rotating pushing mechanism allows the sludge particles to be evenly stirred and moved slowly, so that the sludge particles can be better carbonized.

[0037] The through holes on the outer surface of the rotating cylinder 9 allow hot air to pass through more evenly and come into contact with the sludge particles, enabling the sludge particles to be heated more evenly and to heat up quickly.

[0038] The rotating and pushing mechanism includes: a gear ring 10, which is fixedly installed on the outer surface of the rotating cylinder 9, and the rotating cylinder 9 and the gear ring 10 are concentrically designed; a drive gear 12 is fixedly installed at the output end of the drive motor 8, and the drive gear 12 meshes with the gear ring 10; and a spiral feed bar 11 is fixedly installed inside the rotating cylinder 9.

[0039] When sludge particles are fed into the rotating outer shell 2 and enter the rotating drum 9, the rotation of the drive motor 8 will drive the drive gear 12 to rotate along with it, causing the gear ring 10 meshing with the drive gear 12 to rotate as well. This will cause the rotating drum 9 and the spiral feed bar 11 to rotate together. As the spiral feed bar 11 rotates, the sludge particles can be pushed forward slowly. As the rotating drum 9 rotates, the sludge particles will move along with it, turning and mixing. This allows the sludge particles to automatically turn and mix as they move forward, enabling them to carbonize more evenly and reducing the chance of uneven carbonization.

[0040] The interior of the rotating housing 2 near the combustion nozzle 3 is inclined. A first bevel gear 13 is fixedly installed at the output end of the drive motor 8. A second bevel gear 14 is rotatably installed on the outer surface of the rotating housing 2. A cam 15 is fixedly installed on the outer surface of the second bevel gear 14. The cam 15 and the second bevel gear 14 are concentrically designed. The first bevel gear 13 and the second bevel gear 14 mesh. The diameter of the first bevel gear 13 is larger than the diameter of the second bevel gear 14. A push-tapping plate 16 is slidably installed on the outer surface of the rotating housing 2. A spring 17 is fixed between the push-tapping plate 16 and the rotating housing 2. The outer surface of the rotating housing 2 is in contact with one end of the push-tapping plate 16, and the outer surface of the other end of the push-tapping plate 16 is in contact with the outer surface of the cam 15.

[0041] As the rotating drum 9 rotates, impurities and debris from the sludge particles will inevitably fall. These impurities will fall to the bottom of the rotating housing 2. With the rotation of the drive motor 8 and the rotation of the first bevel gear 13, the second bevel gear 14 will also rotate. The difference in diameter between the second bevel gear 14 and the first bevel gear 13 allows the cam 15 to rotate faster, thus quickly pushing the push-moving striking plate 16. With the help of the spring 17, the push-moving striking plate 16 can strike the outer surface of the rotating housing 2. Through the inclined surface inside the rotating housing 2 and the vibration generated by the striking, the impurities and debris can be concentrated at the lowest point for easy movement and processing, and the sludge particles after carbonization will not contain a large amount of impurities and debris.

[0042] A discharge pipe pump 19 is fixedly installed on the outer surface of the rotating housing 2 away from the electric push rod 7, and a slag discharge pump pipe 18 is fixedly installed on the outer surface of the rotating housing 2 near the combustion nozzle 3. The slag discharge pump pipe 18 and the discharge pipe pump 19 are respectively connected to the mounting base 1.

[0043] After the sludge particles have been carbonized, they will accumulate on one side inside the rotating shell 2. At this time, the carbonized sludge particles can be sent out by starting the discharge pipe pump 19, and the accumulated impurities and debris can be discharged from the bottom of the rotating shell 2 by using the slag discharge pump pipe 18.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sludge carbonization device with a flue gas recovery and utilization structure, comprising a mounting base (1), a rotating housing (2) fixedly mounted on the outer surface of the mounting base (1), and electric push rods (7) fixedly mounted on both outer surfaces of one end of the rotating housing (2), a drive motor (8) fixedly mounted on one end of the rotating housing (2) near the electric push rods (7), and the output end of the drive motor (8) penetrating through the side surface of the rotating housing (2), a rotating cylinder (9) rotatably mounted inside the rotating housing (2), and support rollers rotatably mounted on both outer surfaces inside the rotating housing (2), and the support rollers inside the rotating housing (2) fitting against the outer surface of the rotating cylinder (9), characterized in that: A combustion nozzle (3) is installed through the inner surface of one end of the rotating shell (2). A combustion recovery mechanism is provided between the combustion nozzle (3) and the rotating shell (2). The combustion recovery mechanism facilitates the absorption of pyrolysis gas generated after heating the sludge and discharges it from the combustion nozzle (3) to participate in combustion. The pyrolysis gas can be reused while reducing energy waste and saving fuel.

2. The sludge carbonization device with a flue gas recovery and utilization structure according to claim 1, characterized in that: The combustion recovery mechanism includes: an air intake pump (4), which is fixedly installed on the outer surface of one end of the rotating housing (2), and the rotating housing (2) is connected to the combustion nozzle (3) pipe. A one-way valve (5) is provided between the air intake pump (4) and the combustion nozzle (3), and a gas inlet pipe is provided between the combustion nozzle (3) and the one-way valve (5). The combustion nozzle (3) is designed in an arc shape with side by side.

3. The sludge carbonization device with a flue gas recovery and utilization structure according to claim 1, characterized in that: The rotating housing (2) has a hopper at one end near the drive motor (8). A gate plate (6) is slidably mounted on the outer surface of one end of the rotating housing (2), and the outer surface of the gate plate (6) is connected to the output end of the electric push rod (7). The interior of the rotating housing (2) near the gate plate (6) is designed to be inclined.

4. A sludge carbonization device with a flue gas recovery and utilization structure according to claim 1, characterized in that: The outer surface of the rotating cylinder (9) is uniformly provided with through holes, and a rotating pushing mechanism is provided between the rotating cylinder (9) and the rotating outer shell (2). The rotating pushing mechanism allows the sludge particles to be uniformly stirred and moved slowly, so that the sludge particles can be better carbonized.

5. A sludge carbonization device with a flue gas recovery and utilization structure according to claim 4, characterized in that: The rotating pushing mechanism includes: a gear ring (10), which is fixedly installed on the outer surface of the rotating cylinder (9), and the rotating cylinder (9) and the gear ring (10) are concentrically designed; a drive gear (12) is fixedly installed at the output end of the drive motor (8), and the drive gear (12) meshes with the gear ring (10); and a spiral feed bar (11) is fixedly installed inside the rotating cylinder (9).

6. A sludge carbonization device with a flue gas recovery and utilization structure according to claim 1, characterized in that: The rotating housing (2) has an inclined design at one end near the combustion nozzle (3). The output end of the drive motor (8) is fixedly mounted with a first bevel gear (13). The outer surface of the rotating housing (2) is rotatably mounted with a second bevel gear (14). The outer surface of the second bevel gear (14) is fixedly mounted with a cam (15). The cam (15) and the second bevel gear (14) are concentrically designed. The first bevel gear (13) and the second bevel gear (14) mesh. The diameter of the first bevel gear (13) is larger than the diameter of the second bevel gear (14). The outer surface of the rotating housing (2) is slidably mounted with a push-tapping plate (16). A spring (17) is fixed between the push-tapping plate (16) and the rotating housing (2). The outer surface of the rotating housing (2) is in contact with one end of the push-tapping plate (16). The outer surface of the other end of the push-tapping plate (16) is in contact with the outer surface of the cam (15).

7. A sludge carbonization device with a flue gas recovery and utilization structure according to claim 1, characterized in that: A discharge pipe pump (19) is fixedly installed on the outer surface of the rotating housing (2) away from the electric push rod (7), and a slag discharge pump pipe (18) is fixedly installed on the outer surface of the rotating housing (2) near the combustion nozzle (3). The slag discharge pump pipe (18) and the discharge pipe pump (19) are respectively connected to the mounting base (1).

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