Dangerous waste incineration slag anti-blocking equipment

Abstract

The invention relates to hazardous waste incineration slag anti-blocking equipment which comprises a rotary kiln, a burner and a visual sensor, a scraper conveying device for conveying slag is arranged below the tail end of the rotary kiln, and the burner is provided with a flaming end opposite to the tail end of the rotary kiln. And after the visual sensor recognizes that the slag exceeding the set volume appears at the tail end of the rotary kiln, the burner sprays fire to the tail end of the rotary kiln until the slag melts. By the adoption of the scheme, the hazardous waste incineration slag anti-blocking equipment can treat large-size slag in time and prevent subsequent large-size slag from being regenerated, and smooth and stable operation of the equipment is guaranteed.

Description

Technical Field

[0001] The invention relates to hazardous waste equipment, in particular to hazardous waste incineration slag anti-blocking equipment. Background Art

[0002] Hazardous waste refers to solid waste with hazardous characteristics that may cause harmful effects on the environment or human health. These wastes usually have hazardous characteristics such as toxicity, flammability, corrosiveness, reactivity or infection.

[0003] Hazardous waste is generally treated by high-temperature oxidation combustion in a rotary kiln to convert it into solid slag. During the incineration process, the organic matter and combustibles in the waste will be burned, while the non-combustible and residual harmful substances will gather at the bottom of the furnace to form slag. After cooling, the slag will form different sizes due to different materials. Normally, the diameter is about 1cm-20cm, but some materials will melt and agglomerate or harden due to excessive calorific value, resulting in a diameter of 30cm-50cm, which will cause the slag discharge equipment to be blocked, and even cause the furnace to stop in severe cases. In addition, after the slag falls, it gradually accumulates and gathers into blocks. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a hazardous waste incineration slag anti-blocking equipment that can promptly process large-volume slag and prevent subsequent large-volume slag regeneration, thereby ensuring smooth and stable operation of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: comprising a rotary kiln, wherein a scraper conveying device for conveying slag is arranged below the end of the rotary kiln, and the technical solution is characterized in that: it also comprises a burner and a visual sensor, wherein the burner is provided with a flame spraying end opposite to the end of the rotary kiln, and after the visual sensor recognizes that slag exceeding a set volume appears at the end of the rotary kiln, the burner sprays fire on the end of the rotary kiln until the slag melts.

[0006] By adopting the above technical solution, the visual sensor continuously observes the end of the rotary kiln. Once a large volume of slag is identified, the burner is immediately started to melt it, avoiding problems such as equipment blockage and shutdown caused by large volume of slag. The process is more accurate, fast and intelligent, avoiding the increased labor caused by manual inspections and the limited reaction rate.

[0007] The present invention is further configured as follows: the scraper transmission device includes a chain, a chain circulation mechanism, a scraper and a transmission bottom plate, the transmission bottom plate is used to receive the slag dropped from the rotary kiln, the chain circulation mechanism is located above the transmission bottom plate and drives the ring-shaped chain to rotate in a circular manner, the number of the scrapers is multiple and they are equidistantly arranged on the annular periphery of the chain, the chain has a working position below and parallel to the transmission bottom plate, and when the chain is in the working position, the scraper and the transmission bottom plate are in contact with each other to transmit the slag located on the transmission bottom plate.

[0008] By adopting the above technical solution, the scraper drive structure formed by the chain can reduce the obstruction to the falling slag as much as possible compared with other methods, effectively avoid the possibility of jamming or forming large-volume slag due to attached slag, and ensure smooth operation of the equipment.

[0009] The present invention is further configured as follows: the height of the transmission bottom plate gradually decreases in the direction opposite to the transmission direction of the scraper, and a blocking wall close to the scraper is provided at the lowest end of the transmission bottom plate in the up-down direction.

[0010] By adopting the above technical solution and rationally utilizing gravity, the slag can automatically roll to the lower part of the transmission bottom plate after falling from the rotary kiln, effectively avoiding the possibility of slag accumulating to form a large volume of slag directly below the transmission bottom plate. In combination with the blocking wall, on the one hand, the slag can be prevented from continuing to roll, and on the other hand, the scraper can be used to remove the slag as much as possible.

[0011] The present invention is further configured such that an electric heater is arranged at the rear of the barrier wall relative to the transmission bottom plate.

[0012] By adopting the above technical solution, since slag may accumulate at the corner formed by the barrier wall and the transmission bottom plate, an electric heater is added to maintain a certain temperature at the corner, thereby preventing the slag at this location from hardening and affecting transmission.

[0013] The present invention is further configured such that: the corner formed by the blocking wall and the transmission bottom plate is provided with an arc-shaped transition surface.

[0014] By adopting the above technical solution and adding an arc-shaped transition surface, the gap between the scraper and the corner is made smaller, which further reduces the residual slag and reduces the possibility of increasing the slag volume.

[0015] The present invention is further configured as follows: a vibration motor is arranged below the transmission bottom plate.

[0016] By adopting the above technical solution and adding a vibration motor, on the one hand, the fallen slag can be evenly distributed between adjacent scrapers, and on the other hand, the possibility of the slag adhering to the transmission bottom plate and agglomerating can be reduced.

[0017] The present invention is further configured as follows: the chain circulation mechanism includes a circulation motor, a fixed rotating shaft, a movable rotating shaft, a rotating shaft height adjustment component and a slag sensing component, the chain is respectively sleeved on the fixed rotating shaft and the movable rotating shaft, the fixed rotating shaft and the movable rotating shaft are respectively provided with sprockets meshing with the chain for transmission, the circulation motor drives the fixed rotating shaft to rotate, and the movable rotating shaft moves up and down driven by the rotating shaft height adjustment component, and when the slag sensing component identifies that slag exceeding a set volume appears on the transmission bottom plate, the movable rotating shaft moves up and forms a slag cleaning space between the transmission bottom plate.

[0018] By adopting the above technical solution, the circulating motor drives the fixed shaft to stably drive the chain to rotate in a circular motion, and the shaft height adjustment assembly drives the movable shaft to move up and down. When the component is stuck due to a large volume of slag, the circulating motor is stopped and the chain is lifted in time, which greatly reduces the damage to the equipment caused by the jam. In addition, the large volume of slag will also roll to a lower place due to the height difference of the transmission bottom plate, which is convenient for manual slag cleaning.

[0019] The present invention is further configured as follows: the rotating shaft height adjustment component includes a height adjustment seat located on both sides of the movable rotating shaft, the height adjustment seat is provided with a height adjustment slide groove and a height adjustment slide sliding in the height adjustment slide groove along the up and down directions, a bearing is provided between the height adjustment slide and the end of the movable rotating shaft, a height adjustment motor is provided above one of the height adjustment seats, and the height adjustment motor drives downward to provide a height adjustment screw rod that cooperates with the height adjustment slide thread.

[0020] By adopting the above technical solution, the height of the movable shaft can be adjusted quickly and accurately by the height adjustment motor in conjunction with the height adjustment screw rod to form sufficient slag cleaning space, and accurately restore to the working position after manual slag cleaning is completed.

[0021] The present invention is further configured as follows: the slag sensing component is an encoder, the encoder is located at the other end of the fixed shaft that cooperates with the motor drive and is used to detect the rotation speed of the fixed shaft.

[0022] By adopting the above technical solution, when a large volume of slag causes jamming and hinders the rotation of the fixed shaft, the rotation speed of the fixed shaft will be greatly reduced. The encoder can detect the problem in time and control the circulation motor to stop in time through the controller to avoid equipment damage as soon as possible.

[0023] The present invention is further configured as follows: an extension section extending above the chain is provided at the end of the rotary kiln and a safety distance is provided between the end of the rotary kiln and the scraper, and the safety distance is greater than 0.3m and less than 1m.

[0024] By adopting the above technical solution, the end of the rotary kiln is extended so that the slag falls more completely on the transmission bottom plate, thereby improving the slag discharge effect. At the same time, a reasonable safety distance is set between the scraper to avoid damage to the scraper, thereby ensuring stable and smooth operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional structure of a specific embodiment of the present invention Figure 1 ;

[0026] Figure 2 A three-dimensional structure of a specific embodiment of the present invention Figure 2 ;

[0027] Figure 3 It is a cross-sectional view of the height adjustment seat;

[0028] Figure 4 It is a structural schematic diagram of the chain in the working state;

[0029] Figure 5 It is a structural schematic diagram of the chain in the slag removal state. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] like Figure 1 — Figure 5 As shown, the present invention discloses a hazardous waste incineration slag blocking prevention device, comprising a rotary kiln 1, wherein a scraper conveying device for conveying slag is arranged below the end of the rotary kiln 1, and further comprising a burner 2 and a visual sensor 3, wherein the burner 2 is provided with a flame spraying end 21 opposite to the end of the rotary kiln 1, and after the visual sensor 3 identifies that slag (diameter is more than 30 cm) exceeding a set volume appears at the end of the rotary kiln 1, the burner 2 sprays fire to the end of the rotary kiln 1 until the slag is melted, and the visual sensor 3 continuously observes the end of the rotary kiln 1, and once a large volume of slag is identified, the burner 2 is immediately started to melt it, thereby avoiding problems such as equipment blockage and furnace shutdown caused by large volume of slag, and the process is more accurate, fast and intelligent, thereby avoiding the problems of increased labor and limited reaction rate due to manual inspection.

[0033] The scraper transmission device includes a chain 4, a chain circulation mechanism, a scraper 41 and a transmission bottom plate 5. The transmission bottom plate 5 has side baffles on both sides. In order to clearly express the structure, they are omitted. The transmission bottom plate 5 is used to receive the slag dropped from the rotary kiln 1. The chain circulation mechanism is located above the transmission bottom plate 5 and drives the ring-shaped chain 4 to rotate in a circular manner. The number of scrapers 41 is multiple and they are equidistantly arranged on the annular periphery of the chain 4. The chain 4 has a working position below and parallel to the transmission bottom plate 5. When the chain 4 is in the working position, the scraper 41 fits with the transmission bottom plate 5 to transmit the slag located on the transmission bottom plate 5 ( Figure 4 As shown), the scraper drive structure formed by the chain 4 can reduce the obstruction to the falling slag as much as possible compared with other methods, effectively avoid the possibility of jamming or forming large volume of slag due to the adhesion of slag, and ensure the smooth operation of the equipment.

[0034] The height of the transmission bottom plate 5 gradually decreases in the direction opposite to the transmission direction of the scraper 41. The lowest end of the transmission bottom plate 5 is provided with a blocking wall 51 close to the scraper 41 in the up and down directions. The gravity is rationally utilized to make the slag automatically roll to the lower part of the transmission bottom plate 5 after falling from the rotary kiln 1, effectively avoiding the possibility of slag accumulating to form a large volume of slag directly under the transmission bottom plate 5. In conjunction with the blocking wall 51, on the one hand, the slag is prevented from continuing to roll, and on the other hand, the scraper 41 can be used to remove the slag as much as possible.

[0035] An electric heater 52 is provided behind the blocking wall 51 relative to the transmission bottom plate 5. Since slag may accumulate at the corner formed by the blocking wall 51 and the transmission bottom plate 5, an electric heater is added to maintain a certain temperature at the corner to prevent the slag from hardening and affecting transmission.

[0036] The corner formed by the blocking wall 51 and the transmission bottom plate 5 is provided with an arc-shaped transition surface 53 ( Figure 4 , Figure 5 ), an arc-shaped transition surface 53 is added to make the gap between the scraper 41 and the corner smaller, further reducing the residual slag and the possibility of increasing the slag volume.

[0037] A vibration motor 54 is provided below the transmission bottom plate 5 ( Figure 4 , Figure 5 ), a vibration motor 54 is added. On the one hand, it can make the fallen slag evenly distributed between adjacent scrapers 41, and on the other hand, it can reduce the possibility of the slag adhering to the transmission bottom plate 4 and agglomerating.

[0038] The chain circulation mechanism includes a circulation motor 42, a fixed rotating shaft 43, a movable rotating shaft 44, a rotating shaft height adjustment component and a slag sensing component. The chain 4 is respectively sleeved on the fixed rotating shaft 43 and the movable rotating shaft 44. The fixed rotating shaft 43 and the movable rotating shaft 44 are respectively provided with sprockets that mesh with the chain 4. The circulation motor 42 drives the fixed rotating shaft 43 to rotate, and the movable rotating shaft 44 moves up and down under the drive of the rotating shaft height adjustment component. When the slag sensing component recognizes that the slag exceeding the set volume appears on the transmission bottom plate 5, the movable rotating shaft 44 moves up and forms a slag cleaning space b( Figure 5 As shown, the circulating motor 42 drives the fixed shaft 43 to stably drive the chain 4 to rotate in a circular motion, and the shaft height adjustment component drives the movable shaft 44 to move up and down. When the component is stuck due to a large volume of slag, the circulating motor 42 is stopped and the chain 4 is lifted in time, which greatly reduces the damage to the equipment caused by the stuck state. In addition, the large volume of slag will also roll to a lower place due to the height difference of the transmission bottom plate 5, which is convenient for manual slag cleaning.

[0039] The shaft height adjustment assembly includes a height adjustment seat 45 located on both sides of the movable shaft 44. The height adjustment seat 45 is provided with a height adjustment slot 451 and a height adjustment slide 452 sliding on the height adjustment slot 451 along the up and down directions. A bearing 453 is provided between the height adjustment slide 452 and the end of the movable shaft 44. A height adjustment motor 454 is provided above one of the height adjustment seats 45. The height adjustment motor 454 drives downward to provide a height adjustment screw rod 455 that is threadedly matched with the height adjustment slide 452. The height adjustment motor 454 cooperates with the height adjustment screw rod 455 to quickly and accurately adjust the height of the movable shaft 44 to form sufficient slag cleaning space, and accurately restore it to the working position after manual slag cleaning is completed. Figure 3 It is a height adjustment seat 45 having a height adjustment motor 454 .

[0040] The slag sensing component is an encoder 46, which is located at the other end of the fixed shaft 43 where the motor drive cooperates and is used to detect the rotation speed of the fixed shaft 43. When a large volume of slag causes jamming and hinders the rotation of the fixed shaft 43, the rotation speed of the fixed shaft 43 will be greatly reduced. The encoder 46 can detect the problem in time and control the circulation motor 42 to stop in time through the controller to avoid equipment damage as soon as possible.

[0041] The end of the rotary kiln 1 is provided with an extension section 11 extending to the top of the chain 4 and a safety distance a is set between the scraper 41, and the safety distance a is greater than 0.3m and less than 1m. It is extended at the end of the rotary kiln 1 so that the slag falls more completely on the transmission bottom plate 5, thereby improving the slag discharge effect. At the same time, a reasonable safety distance is set between the scraper 41 to avoid damage to the scraper 41 and ensure stable and smooth operation of the equipment.

Claims

1. A hazardous waste incineration slag blocking prevention device, comprising a rotary kiln, wherein a scraper conveyor for conveying slag is provided below the end of the rotary kiln, and the device is characterized in that: It also includes a burner and a visual sensor. The burner is provided with a flame spraying end opposite to the end of the rotary kiln. After the visual sensor recognizes that slag exceeding a set volume appears at the end of the rotary kiln, the burner sprays fire to the end of the rotary kiln until the slag melts.

2. The hazardous waste incineration slag anti-blocking equipment according to claim 1 is characterized by: The scraper transmission device includes a chain, a chain circulation mechanism, a scraper and a transmission bottom plate. The transmission bottom plate is used to receive the slag dropped from the rotary kiln. The chain circulation mechanism is located above the transmission bottom plate and drives the ring-shaped chain to rotate in a circular manner. The number of the scrapers is multiple and they are equidistantly arranged on the annular periphery of the chain. The chain has a working position below and parallel to the transmission bottom plate. When the chain is in the working position, the scraper fits with the transmission bottom plate to transmit the slag located on the transmission bottom plate.

3. The hazardous waste incineration slag anti-blocking equipment according to claim 2 is characterized by: The height of the transmission bottom plate gradually decreases in the direction opposite to the transmission direction of the scraper, and a blocking wall close to the scraper is arranged at the lowest end of the transmission bottom plate in the up-down direction.

4. The hazardous waste incineration slag anti-blocking equipment according to claim 3 is characterized by: An electric heater is arranged behind the barrier wall relative to the transmission bottom plate.

5. The hazardous waste incineration slag anti-blocking equipment according to claim 3 is characterized by: The corner formed by the blocking wall and the transmission bottom plate is provided with an arc-shaped transition surface.

6. The hazardous waste incineration slag anti-blocking equipment according to claim 3 is characterized by: A vibration motor is arranged below the transmission bottom plate.

7. The hazardous waste incineration slag anti-blocking equipment according to claim 3 is characterized by: The chain circulation mechanism includes a circulation motor, a fixed rotating shaft, a movable rotating shaft, a rotating shaft height adjustment component and a slag sensing component. The chain is respectively mounted on the fixed rotating shaft and the movable rotating shaft. The fixed rotating shaft and the movable rotating shaft are respectively provided with sprockets that mesh with the chain for transmission. The circulation motor drives the fixed rotating shaft to rotate, and the movable rotating shaft moves up and down under the drive of the rotating shaft height adjustment component. When the slag sensing component recognizes that slag exceeding a set volume appears on the transmission bottom plate, the movable rotating shaft moves up and forms a slag cleaning space between the transmission bottom plate.

8. The hazardous waste incineration slag anti-blocking equipment according to claim 7 is characterized by: The shaft height adjustment assembly includes a height adjustment seat located on both sides of the movable shaft, the height adjustment seat is provided with a height adjustment slide groove and a height adjustment slide sliding in the height adjustment slide groove in the up and down directions, a bearing is provided between the height adjustment slide and the end of the movable shaft, a height adjustment motor is provided above one of the height adjustment seats, and the height adjustment motor drives downward a height adjustment screw rod which cooperates with the height adjustment slide thread.

9. The hazardous waste incineration slag anti-blocking equipment according to claim 7, characterized in that: The slag sensing component is an encoder, which is located at the other end of the fixed shaft that cooperates with the motor drive and is used to detect the rotation speed of the fixed shaft.

10. The hazardous waste incineration slag anti-blocking equipment according to claim 1, characterized in that: The end of the rotary kiln is provided with an extension section extending above the chain and a safety distance is provided between the rotary kiln and the scraper, and the safety distance is greater than 0.3m and less than 1m.

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