Cement powder homogenizing and distributing device

Abstract

The utility model provides a cement powder homogenizing and distributing device, which relates to the technical field of cement production and comprises a shell, the shell is fixedly arranged, a feed port is arranged at the top end of the shell, a first discharge port is arranged at the bottom of the shell, a screening disc is obliquely arranged in the shell, and a plurality of screening holes are arranged on the screening disc. A second discharging port is formed in the position, at the lower end of the screening disc, of the shell, a motor is further arranged at the top of the shell, the output end of the motor is connected with a rotating shaft, the rotating shaft penetrates through the screening disc, fan blades are fixedly arranged close to the second discharging port, and a driving connecting piece is further arranged between the rotating shaft and the screening disc. According to the cement powder screening device, the screening disc is obliquely arranged, and the driving connecting piece is arranged on the screening disc, so that the screening disc can move up and down in a reciprocating manner, and cement powder with different particle sizes can be separated; therefore, the problem that powder with different particle sizes is easy to distribute unevenly during distribution is solved, and the homogenizing and mixing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and in particular to a cement powder homogenization and distribution device. Background Technology

[0002] Cement production can be simply summarized as two grinding processes and one calcination process: after the raw materials are crushed, various materials are mixed and ground in a certain proportion, which is called raw meal grinding, to prepare raw meal with suitable composition and uniform quality. Then the raw meal is calcined to become clinker. Finally, a certain amount of gypsum and admixtures are added to the clinker, and it is then ground into cement by cement grinding. In these three main stages, the raw meal grinding and cement grinding stages both involve homogenization processes. By reducing the fluctuation amplitude of the chemical composition of the materials, the composition is made uniform and consistent to ensure the quality of cement leaving the factory.

[0003] The existing cement powder homogenization process in the industry is basically completed by mixing thoroughly with a mixing device, and then the powder is directly distributed. However, in the actual production process, after the raw materials such as limestone, auxiliary materials and raw coal are crushed, there are usually still some particles or lumps. When these different materials are mixed and distributed, the larger particles and lumps are heavier and tend to roll from the top of the pile to the bottom and accumulate, resulting in uneven distribution of powder. This affects the proportion of each powder component when it is taken out, and ultimately affects the quality of cement. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a cement powder homogenization and distribution device, which solves the problem that in existing technologies, when different materials are mixed and distributed, powders of different particle sizes are easily unevenly distributed, resulting in poor material mixing effect.

[0005] According to an embodiment of this utility model, a cement powder homogenization and distribution device includes a housing, which is fixedly disposed. A feed inlet is provided at the top of the housing, and a first discharge outlet is provided at the bottom of the housing. A sieve disc is inclinedly disposed inside the housing, and the sieve disc is provided with a plurality of sieve holes. A second discharge outlet is provided at the lower end of the housing near the sieve disc. A motor is also disposed at the top of the housing, and a rotating shaft is connected to the output end of the motor. The rotating shaft passes through the sieve disc and has a fan blade fixedly disposed near the second discharge outlet. A drive connector is also disposed between the rotating shaft and the sieve disc, so that the sieve disc can move up and down reciprocally when the rotating shaft rotates.

[0006] The technical principle of this utility model is as follows: During the powder homogenization, the powder enters the outer shell from the feed port and falls onto the sieve plate. Because the sieve plate is equipped with several sieve holes, small powder particles will fall through the sieve holes and, after being stirred and mixed by the fan blades, will fall out from the first discharge port, completing the material distribution; large powder particles will remain on the sieve plate and move to the lower end as the sieve plate moves up and down, and will finally be discharged from the second discharge port.

[0007] Furthermore, the drive connector also includes a first fixing ring and a second fixing ring. The first fixing ring surrounds the rotating shaft and is fixedly mounted on the screen disk. A semi-convex disk is fixedly mounted on the top of the first fixing ring. The second fixing ring is fixedly surrounded on the rotating shaft. An end face cam with the same diameter as the semi-convex disk is mounted on the second fixing ring. The top of the end face cam abuts against the first fixing ring. The screen disk and the outer shell are connected by an elastic component.

[0008] Furthermore, the elastic component includes a spring, mounting plates are fixedly connected to the four corners of the screening disc, the upper end of the spring is fixedly connected to the lower end of the mounting plate, and the lower end of the spring is fixedly connected to the outer shell.

[0009] Furthermore, a limit post is fixedly connected to the lower end of the mounting plate.

[0010] Furthermore, the length of the spring near the feed inlet is greater than its length near the second discharge outlet.

[0011] Furthermore, baffles are provided on the three sides of the screening disc away from the second discharge port.

[0012] Furthermore, the outer casing is configured with a tapered structure that is wider at the top and narrower at the bottom near the first discharge port, and the outer side of the fan blade is separated from the inner wall of the outer casing.

[0013] Furthermore, a guide plate extends forward from the side of the screening disc near the second discharge port, and the guide plate extends out of the second discharge port.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By tilting the sieve disc and installing a drive connector on it, the sieve disc can be moved up and down in a reciprocating motion. This effectively separates cement powder of different particle sizes, thus solving the problem of uneven distribution of powder of different particle sizes during feeding, improving the mixing effect and stabilizing the powder composition.

[0016] 2. By setting up a rotating shaft and fan blades for mixing, the separated small powder particles can be mixed more evenly, reducing fluctuations in powder composition, further improving the powder mixing effect, and ensuring cement quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the overall structure of the outer shell after half-section according to an embodiment of the present utility model.

[0019] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the sieve disc structure according to an embodiment of the present utility model.

[0021] In the above figures: 1. Outer shell; 11. Feed inlet; 12. First discharge outlet; 13. Second discharge outlet; 14. Support frame; 2. Screening disc; 21. Mounting plate; 22. Spring; 23. First fixing ring; 231. Semi-convex disc; 24. Screen hole; 25. Guide plate; 26. Baffle plate; 3. Motor; 31. Rotating shaft; 311. Fan blade; 32. Second fixing ring; 321. End face cam. Detailed Implementation

[0022] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figure 1 and Figure 2As shown in the figure, this utility model embodiment proposes a cement powder homogenization and distribution device, including a shell 1, which is fixedly installed. Support frames 14 are fixedly connected to both sides of the shell 1. A horizontal plate is provided at the bottom of the support frame 14 to stabilize the distribution device. An inlet 11 is provided at the top of the shell 1, preferably located near the left side. The inlet 11 has a bucket-shaped structure that is wider at the top and narrower at the bottom to facilitate powder entry. A first outlet 12 is provided at the bottom of the shell 1 for discharging small particles of powder. A sieve disc 2 is inclinedly arranged inside the shell 1, with the side of the sieve disc 2 near the inlet 11 being set at a higher end. A plurality of sieve holes 24 are evenly distributed on the sieve disc 2 for sieving large particles of powder. The outer casing 1 has a second discharge port 13 at the lower end near the sieve disc 2 for discharging large particles of powder. A motor 3 is also provided on the top of the outer casing 1. The output end of the motor 3 is connected downward to a rotating shaft 31. The rotating shaft 31 passes through the sieve disc 2 and is rotatably connected to the outer casing 1. A fan blade 311 is fixedly provided on the rotating shaft 31 near the second discharge port 13. The fan blade 311 can stir the powder, thereby improving the mixing effect. A drive connector is also provided between the rotating shaft 31 and the sieve disc 2 so that the sieve disc 2 can move up and down reciprocally when the rotating shaft 31 rotates, so that large particles of powder can move towards the lower end of the sieve disc 2 under the action of gravity, avoiding clogging of the sieve holes 24.

[0024] like Figure 2 and Figure 3As shown, furthermore, a vibration motor (not shown in the figure) can be fixedly installed on the side of the screening disc 2. After the vibration motor is started, it can vibrate to accelerate the powder separation process. For cost considerations, in this embodiment, the vibration motor is replaced by a drive connector. The drive connector includes a first fixing ring 23 and a second fixing ring 32. The first fixing ring 23 and the second fixing ring 32 have similar radii. The first fixing ring 23 surrounds the rotating shaft 31 and is fixedly installed on the screening disc 2, preferably on the side away from the spring 22. A semi-convex disk 231 is fixedly installed near the edge of the top of the first fixing ring 23. The upper end face of the semi-convex disk 231 is preferably a uniform semi-circular arc. At the same time, the second fixing ring 32 is fixedly arranged around the rotating shaft 31. A cam 321 with the same diameter and coaxiality as the semi-convex disk 231 is provided near the edge of the second fixing ring 32. The end face cam 321 has a curved sidewall coaxial with the second fixing ring 32, and the upper end face of the end face cam 321 is also set with a uniform arc. The top end of the end face cam 321 abuts against the first fixing ring 23. At the same time, the screen disk 2 and the outer shell 1 are connected by an elastic component. During the operation of this utility model device, the second fixing ring 32 will rotate with the rotating shaft 31. When the end face cam 321 moves to contact the semi-convex disk 231, it will gradually lift the semi-convex disk 231, thereby controlling the screen disk 2 to press down. When the second fixing ring 32 continues to rotate, and the end face cam 321 moves to disengage from the semi-convex disk 231, the screen disk 2 will return to the top under the elastic force of the elastic component. This cycle repeats, thereby realizing the up-and-down reciprocating movement of the screen disk 2, controlling the downward movement of large particles of powder, and preventing the screen holes 24 from being blocked.

[0025] like Figure 2 and Figure 4 As shown, the elastic component further includes a spring 22, and mounting plates 21 are fixedly connected to the four corners of the screen plate 2. The upper end of the spring 22 is fixedly connected to the lower end of the mounting plate 21, and the bottom end of the spring 22 is fixedly connected to the outer shell 1 through a gasket. The inner wall of the outer shell 1 is provided with grooves for the mounting plate 21 and the spring 22 to be embedded and fixed, so that the screen plate 2 is limited and can only move up and down.

[0026] like Figure 2 and Figure 4 As shown, further, a limiting post is fixedly connected to the lower end of the mounting plate 21. The limiting post is wrapped by the spring 22 to prevent deviation and protect the spring 22. At the same time, the length of the spring 22 near the feed inlet 11 is greater than its length near the second discharge outlet 13, so that the screen plate 2 can be kept tilted.

[0027] like Figure 2 and Figure 4As shown, furthermore, baffle plates 26 are provided on three sides of the sieve disc 2 away from the second discharge port 13. The three baffle plates 26 are connected to each other to prevent the powder from falling from the edge of the sieve disc 2 during the separation process, which would affect the final homogenization and mixing quality.

[0028] like Figure 1 and Figure 2 As shown, the outer shell 1 is further configured with a narrower diameter structure near the first discharge port 12, which facilitates powder accumulation. At the same time, the outer side of the fan blade 311 is separated from the inner wall of the outer shell 1, so that the powder can be better mixed evenly and more easily distributed. Meanwhile, the lower first discharge port 12 is equipped with a valve (not shown in the figure), which can control the entry and exit of powder by opening or closing the valve. When the powder is mixed evenly, the valve can be opened for distribution.

[0029] like Figure 2 and Figure 4 As shown, further, a guide plate 25 extends forward from the side of the sieve plate 2 near the second discharge port 13. The guide plate 25 is not provided with sieve holes 24. The guide plate 25 extends out of the second discharge port 13. A material collection mechanism can be placed below the guide plate 25 to collect large particles of powder, grind them separately, and then put them back into the device.

[0030] The technical principle of this utility model is as follows: During powder homogenization, the powder enters the outer shell 1 from the feed inlet 11 and falls onto the sieve plate 2. Since the sieve plate 2 is provided with several sieve holes 24, small powder particles will fall through the sieve holes 24 and be mixed by the fan blades 311 before falling out from the first discharge port 12, thus completing the material distribution. Large powder particles will remain on the sieve plate 2. As the rotating shaft 31 drives the second fixed ring 32 to rotate, the semi-convex disc 231 and the end face cam 321 continuously repeat the process of abutting and separating, thereby realizing the up-and-down reciprocating movement of the sieve plate 2, controlling the large powder particles to move to the lower end of the sieve plate 2, and being discharged from the second discharge port 13 and collected.

[0031] This utility model has the following beneficial effects: By tilting the sieve disc 2 and making the semi-convex disc 231 on the sieve disc 2 and the end face cam 321 on the rotating shaft 31 cooperate with each other to form a linkage, it can effectively separate cement powder of different particle sizes, thereby solving the problem of uneven distribution of powder of different particle sizes when it is distributed. At the same time, the structure is simple and can save production costs. The rotating shaft 31 and the fan blade 311 are set to mix in coordination, and the structure near the first discharge port 12 is set to be wider at the top and narrower at the bottom, which facilitates the aggregation and uniform mixing of powder, reduces the fluctuation of powder composition, further improves the powder mixing effect, and ensures the quality of cement.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cement powder homogenization and distribution device, comprising a housing (1), wherein the housing (1) is fixedly disposed, characterized in that: The top of the outer shell (1) is provided with a feed inlet (11), the bottom of the outer shell (1) is provided with a first discharge outlet (12), a screen plate (2) is inclinedly arranged inside the outer shell (1), the screen plate (2) is provided with a plurality of screen holes (24), the lower end of the outer shell (1) near the screen plate (2) is provided with a second discharge outlet (13), the top of the outer shell (1) is also provided with a motor (3), the output end of the motor (3) is connected to a rotating shaft (31), the rotating shaft (31) passes through the screen plate (2), and a fan blade (311) is fixedly provided near the second discharge outlet (13). A drive connector is also provided between the rotating shaft (31) and the screen plate (2) so that the screen plate (2) can move up and down when the rotating shaft (31) rotates.

2. The cement powder homogenization and distribution device as described in claim 1, characterized in that: The drive connector includes a first fixing ring (23) and a second fixing ring (32). The first fixing ring (23) surrounds the rotating shaft (31) and is fixedly mounted on the screen plate (2). A semi-convex disc (231) is fixedly mounted on the top of the first fixing ring (23). The second fixing ring (32) is fixedly mounted around the rotating shaft (31). An end face cam (321) with the same diameter and coaxiality as the semi-convex disc (231) is provided on the second fixing ring (32). The top of the end face cam (321) abuts against the first fixing ring (23). The screen plate (2) and the outer shell (1) are connected by an elastic component.

3. The cement powder homogenization and distribution device as described in claim 2, characterized in that: The elastic component includes a spring (22), and mounting plates (21) are fixedly connected to the four corners of the screen plate (2). The upper end of the spring (22) is fixedly connected to the lower end of the mounting plate (21), and the lower end of the spring (22) is fixedly connected to the outer shell (1).

4. The cement powder homogenization and distribution device as described in claim 3, characterized in that: The lower end of the mounting plate (21) is fixedly connected to a limiting post.

5. The cement powder homogenization and distribution device as described in claim 4, characterized in that: The length of the spring (22) near the feed inlet (11) is greater than its length near the second discharge outlet (13).

6. The cement powder homogenization and distribution device as described in claim 1, characterized in that: The screening disc (2) is provided with baffles (26) on three sides away from the second discharge port (13).

7. The cement powder homogenization and distribution device as described in claim 1, characterized in that: The outer shell (1) is configured with a narrow diameter structure at the top and bottom near the first discharge port (12), and the outer side of the fan blade (311) is separated from the inner wall of the outer shell (1).

8. The cement powder homogenization and distribution device as described in claim 1, characterized in that: The screening disc (2) has a guide plate (25) extending forward on the side near the second discharge port (13), and the guide plate (25) extends out of the second discharge port (13).

Images