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CN-224230651-U - Powder cooling and transferring device for rotary kiln

CN224230651UCN 224230651 UCN224230651 UCN 224230651UCN-224230651-U

Abstract

The utility model discloses a powder cooling and transferring device for a rotary kiln, which comprises a cooler, wherein a gas collecting hood is sleeved on a cooler body, a labyrinth seal structure is arranged between the cooler and the gas collecting hood, a hopper is fixedly connected to the bottom of the gas collecting hood, a K-type thermocouple and a material level meter are arranged in the hopper, an ash discharging port is arranged at the bottom of the hopper, the ash discharging port is connected with a first screw conveyor, and the first screw conveyor is connected with a second screw conveyor.

Inventors

  • GAO LIANG
  • ZHOU JUNWEI
  • ZHANG HAIJIN
  • SHEN KAI
  • LIANG SHUQING
  • CAO KE

Assignees

  • 陕西有色榆林新材料集团有限责任公司

Dates

Publication Date
20260512
Application Date
20250520

Claims (10)

  1. 1. A powder cooling transfer device for rotary kiln, its characterized in that, including cooler (3), the cover is equipped with gas collecting channel (4) on cooler (3) fuselage, cooler (3) with be provided with labyrinth seal structure (2) between gas collecting channel (4), gas collecting channel (4) bottom fixedly connected with hopper (1), hopper (1) internally mounted has K type thermocouple (11) and charge level indicator (15), and hopper (1) bottom is provided with ash discharge mouth (14), ash discharge mouth (14) are connected with first screw conveyer (6), first screw conveyer (6) are connected with second screw conveyer (7).
  2. 2. The powder cooling and transferring device for the rotary kiln according to claim 1, wherein the labyrinth seal structure (2) comprises a plurality of stationary rings (21), the stationary rings (21) are fixed on the inner side of the gas collecting cover (4) along the axial direction of the gas collecting cover (4) and the cooler (3) penetrates through each stationary ring (21), the powder cooling and transferring device further comprises a plurality of movable rings (22), the movable rings (22) are sleeved and fixed on the outer side of the cooler (3) along the axial direction of the cooler (3), the movable rings (22) and the stationary rings (21) are the same in number and correspond to each other in position one by one, a plurality of sealing teeth (24) are arranged on one sides of the movable rings (22) and the stationary rings (21) in a staggered mode, and second silicon carbide coatings (23) are coated on the surfaces of the movable rings (22), the surfaces of the stationary rings (21) and the surfaces of the sealing teeth (24).
  3. 3. Powder cooling and transferring device for rotary kiln according to claim 1, characterized in that the hopper (1) is provided with a first silicon carbide coating (13) on its inner wall.
  4. 4. Powder cooling and transferring device for rotary kiln according to claim 1, characterized in that the outer wall of the hopper (1) is spirally wound with a cooling water coil (5).
  5. 5. Powder cooling and transferring device for a rotary kiln according to claim 1, characterized in that the ash discharge opening (14) is square in shape and 300-350 mm in side length, and an electric gate valve (12) is arranged at the bottom of the ash discharge opening (14).
  6. 6. Powder cooling and transferring device for rotary kiln according to claim 1, characterized in that the first screw conveyor (6) and the second screw conveyor (7) are connected vertically.
  7. 7. Powder cooling and transferring device for rotary kiln according to claim 1, characterized in that the measuring probe of the K-type thermocouple (11) is externally welded with a steel tube.
  8. 8. Powder cooling and transferring device for rotary kiln according to any of claims 1-7, characterized in that the length of the first screw conveyor (6) is 2.5m-3.5m, the length of the second screw conveyor (7) is 12m-14m, the second screw conveyor (7) is connected with a discharge elbow (8), the included angle between the second screw conveyor (7) and the discharge elbow (8) is not less than 60 °, and the curvature radius of the discharge elbow (8) is not less than 1.5 times of the inner shaft diameter of the second screw conveyor (7).
  9. 9. Powder cooling and transferring device for rotary kiln according to claim 4, characterized in that the pipe distance of the cooling water coil (5) is 100-150 mm.
  10. 10. A powder cooling and transporting device for a rotary kiln according to claim 3, characterized in that the first silicon carbide coating (13) has a thickness of 1-2 mm.

Description

Powder cooling and transferring device for rotary kiln Technical Field The utility model belongs to the technical field of powder transferring equipment, and relates to a powder cooling and transferring device for a rotary kiln. Background In the prior art, the cooler of the rotary kiln is used for cooling calcined coke, in order to ensure the operation negative pressure of the rotary kiln, a gas collecting hood is arranged at the position of 8 meters on the cooler body, a powder ash discharge port is arranged below the gas collecting hood, a traditional gas collecting hood sealing structure is easy to wear under the condition of flushing powder at 200-300 ℃, the air leakage rate is as high as 5-8%, the fluctuation range of the negative pressure is +/-50 Pa, the stability of the feeding of the rotary kiln is seriously affected, in the production process, each shift needs to manually transport 1.2-1.5 tons of powder, the operation environment temperature is higher than 60 ℃, the dust concentration is higher than 20mg/m < 3 >, the blocking frequency is up to 3 times/times due to the deformation of a blanking pipe due to thermal stress, the maintenance time is up to 15% in the production time length proportion, meanwhile, in the material temperature is high and granularity are large in the material discharging process, the wear of the hood body is caused, the negative pressure is seriously affected, the negative pressure is kept and the stable feeding quantity of the rotary kiln is seriously, the continuous stable operation of the rotary kiln and the rotary kiln is seriously affects the stability of the feeding of the rotary kiln, the working environment is greatly polluted in the process, and the working intensity is greatly increased for workers at the periphery of the powder collecting and transporting environment pollution is caused each time. In summary, a powder transfer device with full sealing, low energy consumption and high reliability is needed to realize the negative pressure stabilization and continuous safe and stable production of the rotary kiln. Disclosure of utility model The utility model aims to provide a powder cooling and transferring device for a rotary kiln, which solves the problem that a gas collecting hood on a cooler body is easy to wear under powder scouring in the prior art. The technical scheme includes that the powder cooling and transferring device for the rotary kiln comprises a cooler, a gas collecting hood is sleeved on a cooler body, a labyrinth sealing structure is arranged between the cooler and the gas collecting hood, a hopper is fixedly connected to the bottom of the gas collecting hood, a K-type thermocouple and a material level gauge are installed in the hopper, an ash discharge port is arranged at the bottom of the hopper and connected with a first screw conveyor, and the first screw conveyor is connected with a second screw conveyor. The powder cooling and transferring device for the rotary kiln is further characterized in that: The labyrinth seal structure comprises a plurality of stationary rings, a plurality of movable rings, a plurality of sealing teeth, a plurality of second silicon carbide coatings, a plurality of third silicon carbide coatings, a plurality of fourth silicon carbide coatings, a plurality of fifth silicon carbide coatings, a plurality of sixth silicon carbide coatings and a plurality of sixth silicon carbide coatings. A first silicon carbide coating is arranged on the inner wall of the hopper. The outer wall of the hopper is spirally wound with a cooling water coil pipe. The ash discharge opening is square and has a side length of 300-350 mm, and an electric gate valve is arranged at the bottom of the ash discharge opening. The first screw conveyor and the second screw conveyor are vertically connected. And a steel pipe is welded outside the measuring probe of the K-type thermocouple. The length of the first screw conveyor is 2.5-3.5 m, the length of the second screw conveyor is 12-14 m, the second screw conveyor is connected with a discharge elbow, the included angle between the second screw conveyor and the discharge elbow is not less than 60 degrees, and the curvature radius of the discharge elbow is not less than 1.5 times of the diameter of the inner shaft of the second screw conveyor. The pipe distance of the cooling water coil pipe is 100mm-150mm. The first silicon carbide coating has a thickness of 1mm to 2mm. The beneficial effects of the utility model are as follows: According to the powder cooling transfer device for the rotary kiln, through the arrangement of the labyrinth seal structure, external air is prevented from entering the cooler through the gas collecting hood body in the operation process of the cooler, negative pressure fluctuation in the cooler is effectively reduced, negative pressure unbalance is avoided, the temperature of materials discharged by the cooler can be controlled between 60 ℃ and 100 ℃, the service cycle