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CN-122006295-A - Device for eliminating secondary foam of fat coal

CN122006295ACN 122006295 ACN122006295 ACN 122006295ACN-122006295-A

Abstract

The invention discloses a device for eliminating secondary foam of fat coal, which relates to the technical field of devices for eliminating secondary foam of fat coal, and comprises a defoaming sedimentation main frame body, wherein a sedimentation discharge mechanism is fixedly arranged on the defoaming sedimentation main frame body; the defoaming sedimentation main frame body is fixedly provided with a plurality of defoamers at the upper end, the device adopts negative pressure foam suction, a foam suction seat can actively capture deep viscous foam, the foam is prevented from accumulating in a defoaming sedimentation hopper, a stable liquid film of the secondary foam of the fat coal can be effectively torn through a composite blade structure of the defoaming impeller, the problems that the foam is repeatedly generated and cannot be thoroughly broken in the traditional spray defoaming and simple stirring defoaming are solved, and the thorough breaking of the secondary foam of the high-viscosity fat coal is realized.

Inventors

  • ZHU SHAOWEN
  • CAO YINGHUA
  • CAO HONGKUN
  • LI SENSEN
  • ZHANG NAN
  • Duan Shuoshuo

Assignees

  • 江苏仕能工业技术有限公司

Dates

Publication Date
20260512
Application Date
20260317

Claims (9)

  1. 1. A device for eliminating secondary foam of fat coal is characterized by comprising The defoaming sedimentation main frame body (1), wherein a sedimentation discharging mechanism (2) is fixedly arranged on the defoaming sedimentation main frame body (1), and a plurality of defoamers (3) are fixedly arranged at the upper end of the defoaming sedimentation main frame body (1); The defoaming device (3) comprises a defoaming driving motor (31), wherein a connecting flange at the lower end of the defoaming driving motor (31) is connected with a connecting flange at the upper end of a connecting seat (32) in a fitting mode, a cavity is formed in the connecting seat (32), the lower end of the connecting seat (32) is fixedly connected with the upper surface of a defoaming shell (33), a bearing is arranged at the center of the upper end of the defoaming shell (33), a defoaming cavity is formed in the defoaming shell (33), the lower end of the defoaming shell (33) is fixedly connected with the upper end of a fixed connecting rod (36) which is arranged in an annular array mode, the lower end of the fixed connecting rod (36) which is arranged in the annular array mode is fixedly connected with the lower end of a foam sucking seat (37), and a foam sucking opening is formed in the foam sucking seat (37).
  2. 2. The device for eliminating fat coal secondary foam according to claim 1, wherein the lower end of the defoaming driving motor (31) is connected with the transmission shaft (34), the lower end of the transmission shaft (34) is connected with the defoaming impeller (35) through a bearing arranged in the center of the upper end of the defoaming shell (33), the defoaming impeller (35) is arranged in a defoaming cavity arranged in the defoaming shell (33), the lower end of the defoaming impeller (35) is arranged corresponding to a foam suction opening arranged on the foam suction seat (37), the top end of the defoaming shell (33) is provided with the one-way exhaust valve (38), and the exhaust direction of the one-way exhaust valve (38) is from inside to outside.
  3. 3. The device for eliminating fat coal secondary foam according to claim 1, wherein the lower surface of a connecting flange arranged at the upper end of the connecting seat (32) is fixedly connected with an annular mounting seat arranged on the first defoamer mounting frame (14), the mounting seat is arranged in the middle of the first defoamer mounting frame (14), the first defoamer mounting frame (14) is arranged in a rectangular array, and two ends of the first defoamer mounting frame (14) are fixedly connected with inner sides of two ends of the top mounting frame (13).
  4. 4. The device for eliminating the secondary foam of the fat coal, which is disclosed in claim 3, is characterized in that a defoamer mounting frame II (15) and a defoamer mounting frame III (16) are sequentially arranged between the defoamer mounting frames I (14) which are arranged in a rectangular array, annular mounting seats are also arranged on the defoamer mounting frames II (15) and III (16), and the upper surfaces of the annular mounting seats arranged on the defoamer mounting frames II (15) and III (16) are fixedly connected with the lower surfaces of the connecting flanges arranged at the upper ends of the connecting seats (32).
  5. 5. The device for eliminating fat coal secondary foam according to claim 4, wherein annular mounting seats arranged on the second defoamer mounting frame (15) and the third defoamer mounting frame (16) are respectively arranged on the left side and the right side of the middle, two ends of the second defoamer mounting frame (15) and the third defoamer mounting frame (16) are fixedly connected with inner sides of two ends of the top mounting frame (13), and the top mounting frame (13) is fixedly arranged at the upper end of the defoaming sedimentation hopper (12).
  6. 6. The device for eliminating the secondary foam of the fat coal, which is disclosed in claim 5, is characterized in that an overflow guide plate (17) is arranged at the front side of the upper end of the defoaming sedimentation bucket (12), the lower end of the defoaming sedimentation bucket (12) is arranged in a conical shape, the defoaming sedimentation bucket (12) is fixedly arranged at the inner side of the main support mounting frame (11), and an overhaul ladder (18) is arranged at the right side of the front end of the main support mounting frame (11).
  7. 7. The device for eliminating secondary foam of fat coal according to claim 6, wherein the lower end of the defoaming sedimentation bucket (12) is fixedly connected with the bottom screw conveying mechanism (21), the screw driving motor I (22) is fixedly arranged at the rear end of the bottom screw conveying mechanism (21), the sealing connecting channel (23) is fixedly arranged at the front end of the bottom screw conveying mechanism (21), and the left side of the sealing connecting channel (23) is fixedly connected with the lower end of the inclined screw conveying mechanism (24).
  8. 8. The device for eliminating the secondary foam of the fat coal according to claim 7, wherein a screw driving motor II (25) and a discharge pipe (26) are fixedly arranged at the upper end of the inclined screw conveying mechanism (24) respectively, a connecting plate (27) is arranged at the upper end of the inclined screw conveying mechanism (24), and the other end of the connecting plate (27) is connected with the left side of the upper end of the defoaming sedimentation bucket (12).
  9. 9. The device for eliminating fat coal secondary foam according to claim 8, wherein a screen (19) is fixedly arranged on the inner wall of the defoaming sedimentation bucket (12) and the outer side of the defoamer (3).

Description

Device for eliminating secondary foam of fat coal Technical Field The invention particularly relates to the technical field of devices for eliminating fat coal secondary foam, in particular to a device for eliminating fat coal secondary foam. Background In the process of washing and selecting the fat coal, a large amount of secondary foam is easy to generate in a flotation link, and the foam has the characteristics of high viscosity, high stability and difficult natural crushing, and if the foam cannot be effectively eliminated in time, the normal operation of a coal washing system can be seriously influenced. The traditional defoaming mode mostly adopts spraying defoaming, mechanical stirring defoaming or medicament defoaming at present, and has obvious limitation in practical application. The spray defoaming only acts on the surface of foam, the foam breaking effect on secondary foam of deep and high-viscosity fat coal is poor, the foam is easy to repeatedly generate, the conventional mechanical defoaming device is single in structure, lacks a targeted foam sucking and breaking integrated structure, foam treatment is incomplete, overflows easily stacked in equipment to cause coal slurry loss, field environment mess and the like, and the medicament defoaming is quick in effect, increases production cost, residual medicament can influence coal quality and subsequent water recycling, and does not meet the production requirements of energy conservation and environmental protection. Meanwhile, the existing defoaming equipment has the common problems of poor solid-liquid separation effect and unsmooth sediment discharge. The fat coal foam contains a large amount of coal slime particles, fine particles are easy to settle at the bottom of the equipment after defoaming, mud dead angles are easy to form in the traditional flat bottom or simple cone bottom structure, the equipment is blocked in the long-term operation, the effective volume is reduced, and the defoaming efficiency is continuously reduced. Although some equipment is provided with a discharge structure, most of the equipment is in direct discharge type, continuous and stable conveying cannot be realized, shutdown cleaning is needed, and the continuity of a production line is affected. In addition, most defoaming devices are not modularized and are designed in an array layout, the processing capacity of a single defoaming device is limited, the single defoaming device is difficult to adapt to a large-scale fat coal flotation production line, the equipment is inconvenient to install and maintain, the stability of the whole structure is insufficient, overflow clean water is collected unordered, and the clean water can not be effectively recycled and discharged up to the standard. Disclosure of Invention The invention aims to provide a device for eliminating fat coal secondary foam, which is characterized in that a plurality of foam removers are arranged on a foam removal sedimentation main frame body, and then a sedimentation discharging mechanism is arranged on the foam removal sedimentation main frame body, so that the foam removal efficiency, the smoothness of slag removal, the structural stability and the environmental protection economy of the device for eliminating fat coal secondary foam are improved, and the technical problems in the background technology are solved. In order to achieve the above purpose, the present invention provides the following technical solutions: an apparatus for eliminating secondary foam of fat coal, comprising The defoaming sedimentation main frame body is fixedly provided with a sedimentation discharging mechanism, and a plurality of defoamers are fixedly arranged at the upper end of the defoaming sedimentation main frame body; The defoaming device comprises a defoaming driving motor, wherein a connecting flange at the lower end of the defoaming driving motor is connected with a connecting flange at the upper end of a connecting seat in a fitting way, a cavity is formed in the connecting seat, the lower end of the connecting seat is fixedly connected with the upper surface of a defoaming shell, a bearing is arranged at the center of the upper end of the defoaming shell, a defoaming cavity is formed in the defoaming shell, the lower end of the defoaming shell is fixedly connected with the upper end of a fixed connecting rod which is arranged in an annular array way, the lower end of the fixed connecting rod which is arranged in an annular array way is fixedly connected with the lower end of a foam suction seat, and a foam suction opening is formed in the foam suction seat. According to the technical scheme, the end part of the lower end of the defoaming driving motor is connected with the transmission shaft, the lower end of the transmission shaft is connected with the defoaming impeller through a bearing arranged in the center of the upper end of the defoaming shell, the defoaming impeller is arranged in a defoaming cav