CN-224202168-U - Automatic powder feeding device of rotary kiln

CN224202168UCN 224202168 UCN224202168 UCN 224202168UCN-224202168-U

Abstract

The utility model discloses an automatic powder feeding device of a rotary kiln in the technical field of rotary kilns, which comprises a kiln head cover, a powder temporary storage bin, a plurality of feeding spoons and a plurality of guide spiral blades, wherein the kiln head cover is arranged on the outer side of the front end of the rotary kiln, the powder temporary storage bin is arranged in the kiln head cover, the feeding spoons are arranged on the front end of the rotary kiln and are positioned in the powder temporary storage bin, and the guide spiral blades are arranged on the inner wall of the front end of the rotary kiln. The powder automatic feeding device does not need additional mechanical equipment, and is capable of taking materials and feeding materials by means of rotation of the rotary kiln, so that investment cost is reduced, and equipment faults and maintenance requirements are reduced.

Inventors

QIAN XIAOQING
LI WEI
YIN JIN
You Xingmeng

Assignees

扬州大学

Dates

Publication Date: 20260505
Application Date: 20250603

Claims (7)

1. An automatic powder feeding device of a rotary kiln, which is characterized by comprising: The kiln head cover is arranged on the kiln, the rotary kiln is arranged outside the front end head of the rotary kiln; The powder temporary storage bin is arranged in the kiln head cover; the feeding spoons are arranged at the front end of the rotary kiln and positioned in the powder temporary storage bin; the material guiding spiral blades are arranged on the inner wall of the front end head of the rotary kiln.
2. The automatic powder feeding device of claim 1, wherein the ladle bottom of the feeding ladle is an arc-shaped bottom plate, an arc-shaped side plate is arranged on the ladle side, and one end of the arc-shaped bottom plate and one end of the arc-shaped side plate extend into the rotary kiln.
3. The automatic powder feeding device according to claim 2, wherein the number and the volume of the feeding scoops are matched with the maximum feeding amount.
4. The automatic powder feeding device of claim 1, wherein the top of the temporary powder storage bin is provided with a powder feeding hole.
5. The automatic powder feeding device according to claim 4, wherein the corner of the bottom of the powder temporary storage bin is provided with an arc-shaped block.
6. The automatic powder feeding device according to claim 1, wherein 6 feeding spoons are arranged, and 6 feeding spoons are circumferentially arranged at the front end of the rotary kiln at equal intervals and extend into the powder temporary storage bin.
7. The automatic powder feeding device according to claim 6, wherein 6 guide screw blades are provided, and 6 guide screw blades are circumferentially arranged on the inner wall of the front end head of the rotary kiln in an equally-spaced manner.

Description

Automatic powder feeding device of rotary kiln Technical Field The utility model relates to the technical field of rotary kilns, in particular to an automatic powder feeding device of a rotary kiln. Background Rotary kilns are an indispensable equipment in many industrial processes, and the feeding link is one of the key factors affecting the production efficiency and the feeding uniformity of rotary kilns. The powder feeding modes are various, common materials are ① slide pipes for feeding, materials directly enter the rotary kiln through the slide pipes, the mode is simple and easy to implement, the feeding amount is not easy to control and is easy to cause material accumulation or blockage, ② spiral feeding is that materials are fed into the rotary kiln through a spiral conveyor, the feeding amount is stable, continuous feeding can be realized, the equipment cost is high and the feeding is not suitable for conveying high-temperature materials, ③ belt feeding is that materials are fed into the rotary kiln through a belt conveyor, the feeding amount is large, and the rotary kiln is suitable for large-scale production, but the problems of deviation, abrasion and high temperature of a belt are required to be paid attention. Therefore, the existing powder feeding mode has corresponding defects. Meanwhile, in the production process, it is found that the feeding equipment is prevented from adopting mechanical equipment as much as possible under the influence of the characteristic of thermal expansion because of a certain temperature in the rotary kiln, otherwise, the clamping condition is easy to occur. Disclosure of utility model According to the powder automatic feeding device of the rotary kiln, extra mechanical equipment is not needed, the problems of material accumulation, blockage, high equipment cost, conveying faults in a high-temperature environment and the like in the prior art are solved, the investment cost is reduced, and the equipment faults and maintenance requirements are reduced. The application provides an automatic powder feeding device of a rotary kiln, which comprises a kiln head cover, a powder temporary storage bin, a plurality of feeding spoons and a plurality of guide spiral blades, wherein the kiln head cover is arranged on the outer side of the front end of the rotary kiln, the powder temporary storage bin is arranged in the kiln head cover, the feeding spoons are arranged on the front end of the rotary kiln and are positioned in the powder temporary storage bin, and the guide spiral blades are arranged on the inner wall of the front end of the rotary kiln. The automatic powder feeding device has the beneficial effects that the automatic powder feeding device has certain flowability based on powder, and the powder feeding device rotates to a certain angle by taking materials through the material spoon by means of the rotation of the rotary kiln, so that the materials automatically slide down to enter the kiln along the arc line set by the material guiding spiral blade, and the feeding can be realized without mechanical equipment, thereby reducing the investment cost and reducing the conveying faults in a high-temperature environment. The material guiding helical blade is arranged at the kiln mouth of the rotary kiln and is used for preventing the material returning phenomenon caused by material accumulation. Based on the technical scheme, the application can be further improved, and the method specifically comprises the following steps: Further, the ladle bottom of the feeding ladle is an arc-shaped bottom plate, an arc-shaped side plate is arranged on the ladle side, and one end of the arc-shaped bottom plate and one end of the arc-shaped side plate extend into the rotary kiln. This shape material spoon can be along with rotary kiln rotation automatic dig the powder, and when the material spoon is rotatory to a take the altitude, and when arc bottom plate horizontal angle is greater than the repose angle of powder, the material is smooth and easy sideslip along the arc bottom plate because of the action of gravity, falls into in the rotary kiln, is difficult for blockking up. Further, the number, volume of the feed scoops are matched with the maximum feed amount. The volume of the scoop multiplied by the number and number of revolutions is greater than the maximum feed. Further, a powder feeding hole is formed in the top of the powder temporary storage bin. Powder enters a temporary powder storage bin in the kiln head cover through a powder feeding hole in a pneumatic conveying or bin discharging mode. Further, arc-shaped blocks are arranged at the corners of the bottom of the powder temporary storage bin. So as to fit the rotation track of the material spoon and reduce the material storage in the powder temporary storage bin. Drawings In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the