Powder concentrator for cement production

Abstract

The utility model discloses a powder concentrator for cement production, which belongs to the technical field of powder concentrators and comprises a first support, a powder concentrator body and cyclones, air outlet pipes of the cyclones are communicated with an air collecting pipe, the air collecting pipe is communicated with an air inlet pipe on the side face of a filter box, and a filter assembly is arranged in the filter box. An air uniformizing pipe communicated with the air inlet pipe is arranged below the filtering assembly, a box cover is arranged above the filtering box, the upper portion of the box cover is connected with a purifying box through a connecting pipe, a purifying exhaust pipe is arranged on the top face of the purifying box, a second support is arranged below the filtering box, and a collecting box is arranged at a discharging opening in the bottom of the filtering box. According to the cement powder concentrator, the filter box is arranged on one side of the powder concentrator body, air exhausted by the cyclone cylinders is collected into the air collecting pipe, the air is conveyed into the filter box through the air collecting pipe, and cement dust is prevented from being brought out of the cement powder concentrator along the air outlet pipe through filtration of the filter assembly, so that the environment is protected conveniently, and resource waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of air classifier technology, and in particular to an air classifier for cement production. Background Technology

[0002] Currently, cement production requires crushing materials, using fine powder as the raw material. Therefore, a cement classifier is needed to separate the ground cement into coarse, medium-coarse, and fine powders, achieving significant separation and greatly increasing mill output. However, existing cement classifiers often carry large amounts of cement dust out of the air ducts during operation, polluting the environment and wasting resources. Utility Model Content

[0003] The purpose of this invention is to provide a cement classifier for cement production, which solves the problem that a large amount of cement dust is carried out of the cement classifier through the exhaust duct during use, which not only pollutes the environment but also wastes resources.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This utility model discloses a classifier for cement production, comprising a first support, on which the classifier body is mounted. The top of the classifier body has a feed inlet, and the bottom has an air inlet and a discharge outlet. Multiple fine powder outlets are evenly distributed circumferentially along the upper side wall of the classifier body. Each fine powder outlet is connected to a cyclone separator, and the top of each cyclone separator has an air outlet pipe. The key feature is that the air outlet pipes of each cyclone separator are connected to a collecting pipe, which is connected to an air inlet pipe on the side of a filter box. The filter box contains a filter assembly, and below the filter assembly is a distributing pipe connected to the air inlet pipe. A cover is mounted on top of the filter box, and a purification box is connected to the cover via a connecting pipe. A purification exhaust pipe is mounted on the top surface of the purification box. A second support is mounted below the filter box, and a collection box is located at the discharge outlet at the bottom of the filter box.

[0006] Furthermore, the inner wall of the air distribution duct is evenly provided with several air outlet holes.

[0007] Furthermore, the top surface of the air distribution duct is set as an inclined surface.

[0008] Furthermore, the filter assembly includes a top plate, with several mounting frames disposed below the top plate, filter screens disposed on the mounting frames, and through holes disposed on the top plate at positions corresponding to the mounting frames.

[0009] Furthermore, the cross-section of the mounting frame is set to trapezoidal, and the filter screen is provided on both the left and right sides of the mounting frame.

[0010] Furthermore, a support platform for supporting the top plate is provided on the inner wall of the filter box.

[0011] Furthermore, a sealed door is provided at the front of the purification box, and a first activated carbon filter plate and a second activated carbon filter plate are detachably installed inside the purification box.

[0012] Furthermore, the purification box is internally provided with a support assembly, and the first activated carbon filter plate or the second activated carbon filter plate is disposed within the support assembly; the support assembly includes two support frames arranged vertically, the support frames are configured in a U-shape, and the side walls of the support frames are connected to the inner wall of the purification box.

[0013] Furthermore, a collection hopper is provided at the bottom of the filter box, and the collection hopper is connected to the collection box by a locking mechanism.

[0014] Furthermore, the bottom of the collection box is equipped with multiple casters, and a push rod is provided on the front side of the collection box.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This invention features a filter box on one side of the air classifier body, which collects the air discharged from each cyclone into the air collection pipe. The air is then transported to the filter box through the air collection pipe and filtered by the filter components. This prevents cement dust from being carried out of the cement air classifier along the air outlet pipe, which not only helps protect the environment but also avoids resource waste. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a front view of the cement classifier of this utility model;

[0019] Figure 2 This is a cross-sectional view of the filter box of this utility model;

[0020] Figure 3 This is a top view of the air distribution duct of this utility model;

[0021] Figure 4 This is a cross-sectional view of the air distribution duct of this utility model;

[0022] Figure 5 This is a cross-sectional view of the air distribution duct in another embodiment of the present invention;

[0023] Figure 6This is a three-dimensional structural diagram of the filter assembly of this utility model;

[0024] Figure 7 This is a schematic diagram of the internal structure of the purification box of this utility model;

[0025] Figure 8 This is a three-dimensional structural diagram of the collection box of this utility model.

[0026] Explanation of reference numerals in the attached drawings: 1. First support; 2. Air classifier body; 3. Cyclone; 4. Air inlet; 5. Air outlet; 6. Air collection pipe; 7. Feed inlet; 8. Discharge outlet; 9. Filter box; 9-1. Collection hopper; 10. Second support; 11. Box cover; 12. Air inlet pipe; 13. Air distribution pipe; 13-1. Air outlet; 14. Support platform; 15. Filter assembly; 15-1. Top plate; 15-1-1. Through hole; 15-2. Mounting frame; 15-3. Filter screen; 16. Purification box; 17. Connecting pipe; 18. Purification exhaust pipe; 19. First activated carbon filter plate; 20. Second activated carbon filter plate; 21. Support frame; 22. Collection box; 22-1. Casters; 22-2. Push rod; 23. Lock. Detailed Implementation

[0027] like Figure 1-8 As shown, a cement production air classifier includes a first support 1, on which an air classifier body 2 is mounted. The top of the air classifier body 2 is connected to a feed inlet 7, and the bottom of the air classifier body 2 is connected to an air inlet 4 and a discharge outlet 8. Multiple fine powder outlets are evenly distributed circumferentially on the upper side wall of the air classifier body 2. Each fine powder outlet is connected to a cyclone separator 3, and the top of each cyclone separator 3 is connected to an air outlet pipe 5. The air outlet pipe 5 of each cyclone separator 3 is connected to an air collecting pipe 6, which is connected to a filter. The air inlet pipe 12 on the side of the filter box 9 is connected. The filter assembly 15 is installed inside the filter box 9. The air distribution pipe 13 connected to the air inlet pipe 12 is provided below the filter assembly 15. The cover 11 is detachably installed on the top of the filter box 9 by bolts. The purification box 16 is connected to the top of the cover 11 by a connecting pipe 17. The top surface of the purification box 16 is connected to the purification exhaust pipe 18. The second bracket 10 is installed below the filter box 9. The collection box 22 is provided at the discharge port at the bottom of the filter box 9.

[0028] like Figure 2 As shown, a plurality of air outlet holes 13-1 are evenly opened on the inner side wall of the air distribution duct 13. The air outlet holes 13-1 are designed in this way to prevent dust from entering the air distribution duct 13 as it falls downwards; the air distribution duct 13 makes the air evenly distributed below the filter screen, which is more convenient for filtration.

[0029] The top surface of the air distribution duct 13 is set as an inclined surface, such as Figure 4As shown, the top surface of the air distribution duct 13 includes two inclined surfaces, which form a roof-like structure. Dust can slide down along the two inclined surfaces, preventing dust from accumulating on the top surface of the air distribution duct 13; in another embodiment, as... Figure 5 As shown, the top surface of the air distribution duct 13 includes an inclined surface, along which dust can slide down.

[0030] like Figure 6 As shown, the filter assembly 15 includes a top plate 15-1, with four mounting frames 15-2 connected below the top plate 15-1. The mounting frames 15-2 have a trapezoidal cross-section, and filter screens 15-3 are installed on both the left and right sides of the mounting frames 15-2. Through holes 15-1-1 are provided on the top plate 15-1 at positions corresponding to the mounting frames 15-2. A support platform 14 for supporting the top plate 15-1 is connected to the inner wall of the filter box 9. When the filter screens 15-3 need to be cleaned, the box cover 11 is opened, and the filter assembly 15 is taken out upwards for cleaning. After cleaning, the filter assembly 15 is placed in the filter box 9, with the edge of the top plate 15-1 resting on the support platform 14, which supports the filter assembly 15. To facilitate the removal of the filter assembly 15, a handle can also be installed on the top of the top plate 15-1.

[0031] The filter assembly includes multiple trapezoidal mounting frames, with filter screens installed on both the left and right sides of the mounting frames, increasing the area of ​​the filter screens. The filter screens are arranged at an angle to facilitate dust sliding off and reduce the risk of filter screen clogging.

[0032] The purification box 16 has a hinged sealing door at the front, which is locked to the purification box 16 by a latch. A sealing ring is also installed on the inside of the sealing door to prevent dust from overflowing from the contact point between the sealing door and the purification box 16. The purification box 16 has a detachable first activated carbon filter plate 19 and a second activated carbon filter plate 20 inside. The first activated carbon filter plate 19 is located below the second activated carbon filter plate 20. The first activated carbon filter plate 19 and the second activated carbon filter plate 20 can be activated carbon filter plates with different filtration capacities to achieve two-stage filtration. In actual use, the number and grade of activated carbon filter plates can be selected according to the needs. If one activated carbon filter plate can meet the filtration requirements, only one activated carbon filter plate can be installed.

[0033] Specifically, such as Figure 7As shown, a support assembly is installed inside the purification box 16, into which either the first activated carbon filter plate 19 or the second activated carbon filter plate 20 is inserted. The support assembly includes two vertically arranged support frames 21, each U-shaped, with its sidewalls connected to the inner wall of the purification box 16. To replace the activated carbon filter plate, simply open the sealing door, pull the old filter plate forward, and insert the new filter plate between the two support frames 21. After entering the purification box, the gas is purified by passing through the first and second activated carbon filter plates, preventing air pollution.

[0034] like Figure 8 As shown, a conical collection hopper 9-1 is connected to the bottom of the filter box 9, and the collection hopper 9-1 is connected to the collection box 22 by a latch 23; three casters 22-1 are installed on the bottom surface of the collection box 22, and a push rod 22-2 is connected to the front side of the collection box 22.

[0035] The working process of this utility model is as follows:

[0036] After the material is classified in the body 2 of the air classifier, the fine powder enters the cyclone 3 from the fine powder outlet under the action of the air force entering the air inlet 4. After settling in the cyclone 3, the air in each cyclone 3 is discharged from the air outlet 5 and enters the air collection pipe 6. Then it enters the air distribution pipe 13 through the air inlet 12. The air enters the filter box 9 through the air outlet 13-1. The dust is intercepted by the filter screen 15-3 and remains in the filter box 9, falling into the collection hopper 9-1, and finally entering the collection box 22 for collection. The gas enters the purification box 16 through the through hole 15-1-1 and the connecting pipe 17. After being purified by the first activated carbon filter plate 19 and the second activated carbon filter plate 20, it is discharged through the purification exhaust pipe 18.

[0037] This utility model does not involve any improvement to the structure of the classifier body 2 and the cyclone 3. The classifier body 2 and the cyclone 3 adopt existing technology, and their specific structures will not be described in detail here.

[0038] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A classifier for cement production, comprising a first support (1), on which a classifier body (2) is mounted, wherein a feed inlet (7) is provided at the top of the classifier body (2), and an air inlet (4) and a discharge outlet (8) are provided at the bottom of the classifier body (2), wherein a plurality of fine powder outlets are evenly distributed circumferentially on the upper side wall of the classifier body (2), each fine powder outlet being connected to a cyclone separator (3), and an air outlet pipe (5) is provided at the top of the cyclone separator (3), characterized in that: The air outlet pipe (5) of each cyclone (3) is connected to the air collection pipe (6). The air collection pipe (6) is connected to the air inlet pipe (12) on the side of the filter box (9). The filter box (9) is equipped with a filter assembly (15). Below the filter assembly (15) is a distribution pipe (13) connected to the air inlet pipe (12). The filter box (9) is equipped with a box cover (11). The box cover (11) is connected to a purification box (16) via a connecting pipe (17). The top surface of the purification box (16) is equipped with a purification exhaust pipe (18). The filter box (9) is equipped with a second support (10) below it. The filter box (9) is equipped with a collection box (22) at the discharge port at the bottom of the filter box (9).

2. The air classifier for cement production according to claim 1, characterized in that: The inner wall of the air distribution duct (13) is evenly provided with several air outlet holes (13-1).

3. The air classifier for cement production according to claim 1, characterized in that: The top surface of the air distribution duct (13) is set as an inclined surface.

4. The air classifier for cement production according to claim 1, characterized in that: The filter assembly (15) includes a top plate (15-1), and a plurality of mounting frames (15-2) are provided below the top plate (15-1). A filter screen (15-3) is provided on the mounting frame (15-2), and a through hole (15-1-1) is provided on the top plate (15-1) at a position corresponding to the mounting frame (15-2).

5. The air classifier for cement production according to claim 4, characterized in that: The cross-section of the mounting frame (15-2) is trapezoidal, and the filter screen (15-3) is provided on both the left and right sides of the mounting frame (15-2).

6. The air classifier for cement production according to claim 4, characterized in that: The filter box (9) is provided with a support platform (14) for supporting the top plate (15-1) on its inner wall.

7. The air classifier for cement production according to claim 1, characterized in that: The purification box (16) is provided with a sealed door at the front, and the purification box (16) is provided with a first activated carbon filter plate (19) and a second activated carbon filter plate (20) that can be detached inside.

8. The air classifier for cement production according to claim 7, characterized in that: The purification box (16) is provided with a support assembly inside, and the first activated carbon filter plate (19) or the second activated carbon filter plate (20) is disposed in the support assembly; the support assembly includes two support frames (21) arranged vertically, the support frames (21) are configured in a U-shape, and the side wall of the support frame (21) is connected to the inner wall of the purification box (16).

9. The air classifier for cement production according to claim 1, characterized in that: The bottom of the filter box (9) is provided with a collection hopper (9-1), which is connected to the collection box (22) by a latch (23).

10. The air classifier for cement production according to claim 1, characterized in that: The bottom surface of the collection box (22) is provided with multiple casters (22-1), and the front side of the collection box (22) is provided with a push rod (22-2).

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