A coal mill hot air duct structure

Abstract

The utility model relates to the technical field of air ducts, and in particular to a hot air duct structure of a coal mill. Its technical solution includes: a processing tube, a collection box and a filter plate, the processing tube is rotatably mounted with a filter plate, the outer ring surface of the filter plate is mounted with a gear ring by bolts, the inner wall of the processing tube is fixed with a scraper bar, the scraper bar contacts the surface of the filter plate, and the lower part of the processing tube is provided with a collection box. The utility model can effectively prevent particulate matter and dust from entering the coal mill through the coordination between structures and the action of rotating scraping, thereby reducing the occurrence of safety accidents. At the same time, the operator can regularly control the device to complete the self-cleaning operation of the hot air duct, greatly improving the cleaning efficiency of the filter structure.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to a coal mill hot air duct structure. Background Art

[0002] The hot air used by the coal mill contains a large amount of fine clinker particles. Since there is no device to purify the hot air in the coal mill, the fine clinker particles will aggravate the wear of the hot air pipe, making the grindability of coal powder worse and reducing the coal mill output.

[0003] The superheated clinker fine particles entering the coal mill will also increase the risk factor of coal mill operation, easily lead to dangerous accidents such as explosion, and pose a safety hazard to the coal mill. Therefore, it is necessary to filter the particulate matter inside the hot air duct to prevent the occurrence of safety accidents.

[0004] Because the filter screen and plate are inside the filter pipeline, when the filter screen and plate become blocked after working for a period of time, it is difficult for the staff to clean the filter screen and plate inside the pipeline, and the staff need to manually disassemble and clean them, which seriously affects the ventilation efficiency of the hot air duct.

[0005] For this reason, we propose a coal mill hot air duct structure to solve the existing problems. Utility Model Content

[0006] The utility model aims to solve the problems existing in the background technology and proposes a coal mill hot air pipeline structure.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mill hot air duct structure, comprising a processing tube, a collecting box and a filter plate, wherein the filter plate is rotatably mounted on the processing tube, a gear ring is mounted on the outer ring surface of the filter plate by bolts, a scraper strip is fixed to the inner wall of the processing tube, the scraper strip contacts the surface of the filter plate, and a collecting box is provided at the lower part of the processing tube.

[0008] Preferably, connecting pipes are symmetrically provided at both ends of the processing pipe, and a flange is installed at one end of the connecting pipe away from the processing pipe;

[0009] The flange is provided with a mounting hole adapted to the mounting nail, and the mounting hole is movably plugged with the mounting nail;

[0010] There are a total of six mounting pins on a single flange, and the six mounting pins are distributed in a ring array on the flange.

[0011] Preferably, a leakage hole is provided on the processing tube;

[0012] A connecting bucket is installed on the processing tube, and the connecting bucket is connected to the processing tube through a leak hole;

[0013] The bottom end of the connecting bucket is threadedly mounted with a collecting box.

[0014] Preferably, a motor is fixed to the upper surface of the processing tube by bolts;

[0015] A gear is installed at the output end of the motor, and the gear is in a gear meshing state with the gear ring.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] During the use of the utility model coal mill hot air duct structure, the device can be installed at a designated position of the coal mill hot air delivery pipeline through a flange structure. When the hot air carrying particles passes through the inside of the processing pipe, it is filtered by the filter plate, and the hot air passes while the particles are blocked by the filter plate. The particles retained in the processing pipe finally fall into the collection box through the leak hole under the action of gravity.

[0018] Furthermore, the operator regularly controls the motor to work, and through the meshing action between the gear and the gear ring, the filter plate is driven to rotate. During the rotation of the filter plate coaxial with the processing tube, its surface contacts the scraper bar, and the scraper bar scrapes off the impurities attached to the surface of the filter plate, thereby ensuring the filtering effect of the filter plate and ensuring that the ventilation of the pipeline is in a normal state;

[0019] The utility model can effectively prevent particles and dust from entering the coal mill through the rotating scraping action, thereby reducing the occurrence of safety accidents. At the same time, the operator can regularly control the device to complete the self-cleaning operation of the hot air pipeline, greatly improving the cleaning efficiency of the filter structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model.

[0023] Reference numerals:

[0024] 1. Processing pipe; 2. Connecting pipe; 3. Flange; 4. Mounting nails; 5. Gear ring; 6. Gear; 7. Connecting bucket; 8. Collection box; 9. Leak hole; 10. Scraper strip; 11. Filter plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] like Figure 1-Figure 3 As shown, the utility model proposes a coal mill hot air duct structure, including a processing tube 1, a collecting box 8 and a filter plate 11, the filter plate 11 is rotatably mounted on the processing tube 1, a gear ring 5 is installed on the outer ring surface of the filter plate 11 by bolts, a scraper bar 10 is fixed to the inner wall of the processing tube 1, the scraper bar 10 contacts the surface of the filter plate 11, and a collecting box 8 is provided at the lower part of the processing tube 1.

[0028] Based on Example 1:

[0029] During the use of the coal mill hot air duct structure of the utility model, the hot air carrying particles is filtered by the filter plate 11 when passing through the inside of the processing tube 1, and the hot air passes while the particles are blocked by the filter plate 11. The particles retained in the processing tube 1 finally fall into the collection box 8 through the leakage hole 9 under the action of gravity;

[0030] Furthermore, the operator regularly controls the operation of the motor, and through the meshing action between the gear 6 and the ring gear 5, drives the filter plate 11 to produce a self-rotation action. During the rotation, the filter plate 11 which is coaxial with the processing tube 1 contacts the scraper bar 10, and the scraper bar 10 scrapes off the impurities attached to the surface of the filter plate 11, thereby ensuring the filtering effect of the filter plate 11 and ensuring that the ventilation of the pipeline is in a normal state.

[0031] Embodiment 2

[0032] like Figure 1-Figure 3 As shown, the utility model proposes a coal mill hot air duct structure. Compared with the first embodiment, this embodiment also includes:

[0033] Connecting pipes 2 are symmetrically arranged at both ends of the processing pipe 1, and a flange 3 is installed at one end of the connecting pipe 2 away from the processing pipe 1;

[0034] The flange 3 is provided with a mounting hole adapted to the mounting nail 4, and the mounting hole is movably plugged with the mounting nail 4;

[0035] There are a total of six mounting pins 4 on a single flange 3, and the six mounting pins 4 are distributed in a ring array on the flange 3;

[0036] Through the coordination of the above structures, the device can be installed at a designated position of the coal mill hot air conveying pipeline through a flange structure.

[0037] A leak hole 9 is provided on the processing tube 1;

[0038] A connecting bucket 7 is installed on the processing tube 1, and the connecting bucket 7 is connected to the processing tube 1 through a leak hole 9;

[0039] The bottom end of the connecting bucket 7 is threadedly mounted with a collecting box 8;

[0040] The particles retained in the processing tube 1 eventually fall into the collecting box 8 through the leak hole 9 under the action of gravity.

[0041] A motor is fixed to the upper surface of the processing tube 1 by bolts;

[0042] The output end of the motor is provided with a gear 6, and the gear 6 is in a gear meshing state with the gear ring 5;

[0043] Through the cooperation of the above structure and the meshing action between the gear 6 and the gear ring 5, the filter plate 11 is driven to generate a self-rotation action.

[0044] It should be noted that the motor structure is an existing mature technology, and its working principle and internal structure are known to technicians in the relevant technical field. The utility model only utilizes its function and does not improve its internal structure. Therefore, it will not be described in detail here, and technicians in this field can make any optional adjustments according to their needs or convenience.

[0045] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A coal mill hot air duct structure, comprising a processing tube (1), a collecting box (8) and a filter plate (11), characterized in that: A filter plate (11) is rotatably mounted on the processing tube (1), a gear ring (5) is mounted on the outer ring surface of the filter plate (11) by means of bolts, a scraper bar (10) is fixed to the inner wall of the processing tube (1), the scraper bar (10) contacts the surface of the filter plate (11), and a collecting box (8) is provided at the bottom of the processing tube (1).

2. A coal mill hot air duct structure according to claim 1, characterized in that: Connecting pipes (2) are symmetrically arranged at both ends of the processing pipe (1), and a flange (3) is installed at one end of the connecting pipe (2) away from the processing pipe (1); The flange (3) is provided with a mounting hole adapted to the mounting nail (4), and the mounting nail (4) is movably inserted into the mounting hole; A total of six mounting pins (4) are provided on a single flange (3), and the six mounting pins (4) are distributed in a ring array on the flange (3).

3. A coal mill hot air duct structure according to claim 1, characterized in that: The treatment tube (1) is provided with a leakage hole (9); A connecting bucket (7) is installed on the processing tube (1), and the connecting bucket (7) is connected to the processing tube (1) through a leak hole (9); A collecting box (8) is threadedly mounted on the bottom end of the connecting bucket (7).

4. A coal mill hot air duct structure according to claim 1, characterized in that: A motor is fixed to the upper surface of the processing tube (1) by means of bolts; A gear (6) is installed at the output end of the motor, and the gear (6) is in a gear meshing state with the gear ring (5).

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