Coal preheating and feeding mechanism

Abstract

This invention provides a coal preheating and feeding mechanism, including a steel frame on which a feeding assembly is mounted. The feeding assembly includes a steel bin, a screw feeder, a belt scale, a material pipe, a buffer bin, and a hoist. The screw feeder is installed at the outlet of the steel bin, and its outlet corresponds to the position of the belt scale. This invention uses the screw feeder to transport industrial waste from the steel bin to the belt scale. The belt scale weighs and transports the industrial waste, which then passes through a guide hopper, material pipe, and buffer bin before entering the hoist. The hoist then feeds the industrial waste into the preheater of a cement rotary kiln. After preheating in the preheater, the industrial waste is fed into the cement rotary kiln. Compared to existing technologies, this invention achieves automated feeding of industrial waste, improves the efficiency of cement clinker production, reduces the labor intensity of workers, and meets the needs of large-scale production.

Description

Technical Field

[0001] This utility model relates to a feeding mechanism, specifically a coal preheating feeding mechanism, belonging to the field of cement production technology. Background Technology

[0002] In the production of cement clinker, traditional high-temperature calcination processes are energy-intensive and produce large amounts of carbon emissions, which is inconsistent with the current global trend of energy conservation and emission reduction. Developing technologies with low calcination temperatures can significantly reduce energy consumption and greenhouse gas emissions, aligning with the concept of green and low-carbon development.

[0003] While applying low-temperature calcination technology to cement clinker production effectively reduces production costs by using medium- to low-calorific-value coal as fuel, this method also brings a significant problem: a substantial decrease in cement clinker production. This decline in production undoubtedly has a considerable impact on the economic benefits and production capacity of cement manufacturers.

[0004] To address this problem, researchers discovered an effective solution: adding high-temperature calcined industrial waste residue to the production process can significantly accelerate the formation of the liquid phase. This is because the high-temperature calcined industrial waste residue has better activity and reactivity, enabling it to react more quickly with other raw materials, thereby promoting clinker formation. However, preheating is necessary before adding the industrial waste residue.

[0005] However, most companies still use manual handling in the preheating process of industrial waste residue addition. This method is not only inefficient but also labor-intensive, making it difficult to meet the needs of large-scale production. Therefore, a coal preheating addition mechanism is proposed. Utility Model Content

[0006] In view of this, the present invention provides a coal preheating and dosing mechanism to solve or alleviate the technical problems existing in the prior art, and at least provides a beneficial alternative.

[0007] The technical solution of this utility model embodiment is implemented as follows: a coal preheating and feeding mechanism includes a steel frame, on which a feeding component is installed. The feeding component includes a steel bin, a screw feeder, a belt scale, a material pipe, a buffer bin, and a hoist.

[0008] The screw feeder is installed at the discharge port of the steel bin, and the discharge port of the screw feeder corresponds to the position of the belt scale. The bottom end of the material pipe is located inside the buffer bin, and the top end of the material pipe is equipped with a guide hopper. The guide hopper is located below the belt of the belt scale. The discharge port of the buffer bin is connected to the feed port of the elevator through a pipe.

[0009] The belt scale is equipped with a dust removal assembly, which includes two arc-shaped dust suction hoods and a dust suction hole.

[0010] Two arc-shaped dust collection hoods are symmetrically installed on the frame of the belt scale. The dust collection holes are equidistantly opened on the inner sidewall of the arc-shaped dust collection hoods, and the right end of the arc-shaped dust collection hoods is located above the guide hopper.

[0011] In a further preferred embodiment, the steel bin, screw feeder, belt scale, material pipe, buffer bin, and elevator are all fixedly connected to the steel frame, and the upper surface of the buffer bin is equipped with a dust cover.

[0012] More preferably, the dust removal assembly further includes two suction pipes, a dust collection box, and a negative pressure fan;

[0013] The top ends of the two suction pipes are symmetrically installed on the outer walls of the two arc-shaped suction hoods, and the negative pressure fan is installed on one side of the lower surface of the dust collection box.

[0014] More preferably, the bottom ends of the two suction pipes are symmetrically installed on the outer side wall of the dust collection box.

[0015] More preferably, the suction pipe is connected to both the dust collection box and the arc-shaped suction hood.

[0016] More preferably, a filter plate is installed inside the dust collection box.

[0017] More preferably, both of the suction pipes are located on the right side of the filter plate, and the negative pressure fan is located on the left side of the filter plate.

[0018] More preferably, the dust collection box is installed inside the frame of the belt scale, and the two arc-shaped dust suction hoods are symmetrically located above the belt scale.

[0019] The present invention has the following advantages due to the adoption of the above technical solution:

[0020] I. This utility model uses a screw feeder to transport industrial waste slag from a steel silo to a belt scale. The belt scale weighs and transports the industrial waste slag, which then passes through a guide hopper, a material pipe, and a buffer silo before entering an elevator. The elevator then sends the industrial waste slag into the preheater of a cement rotary kiln. After preheating in the preheater, the industrial waste slag is fed into the cement rotary kiln, thereby promoting the formation of cement clinker. When using medium- and low-calorific-value coal as fuel, it can increase cement production. Compared with existing technologies, this utility model achieves automated feeding of industrial waste slag, improves the working efficiency of cement clinker production, reduces the labor intensity of workers, and can meet the needs of large-scale production.

[0021] Second, when the industrial waste is transported by the belt scale, a large amount of dust is generated. At this time, the negative pressure fan works, and the arc-shaped dust collection hood is in a negative pressure state. External air and dust enter the arc-shaped dust collection hood through the dust collection hole, and then flow into the dust collection box through the dust collection pipe. The dust can be filtered through the filter plate, so that the dust is retained in the dust collection box, thereby realizing the collection of dust and avoiding air pollution.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural diagram of the present invention;

[0025] Figure 2 This is a structural diagram of the dosing component of this utility model;

[0026] Figure 3 This is a structural diagram of the dust removal component of this utility model;

[0027] Figure 4 This is a structural diagram of the arc-shaped dust collection hood of this utility model;

[0028] Figure 5 This is a schematic diagram showing the installation position of the filter plate of this utility model.

[0029] Reference numerals: 101, Feeding component; 11, Steel frame; 12, Steel silo; 13, Screw feeder; 14, Belt scale; 15, Guide hopper; 16, Material pipe; 17, Buffer silo; 18, Dust cover; 19, Elevator; 301, Dust removal component; 31, Arc-shaped dust suction hood; 32, Dust suction hole; 33, Dust suction pipe; 34, Dust collection box; 35, Negative pressure fan; 36, Filter plate. Detailed Implementation

[0030] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] like Figures 1-5 As shown, this utility model embodiment provides a coal preheating and feeding mechanism, including a steel frame 11, on which a feeding component 101 is installed. The feeding component 101 includes a steel bin 12, a screw feeder 13, a belt scale 14, a material pipe 16, a buffer bin 17, and a hoist 19.

[0033] The screw feeder 13 is installed at the discharge port of the steel silo 12, which is used to store industrial waste. The discharge port of the screw feeder 13 corresponds to the position of the belt scale 14. The screw feeder 13 can feed the industrial waste in the steel silo 12 to the belt scale 14. The belt scale 14 is used to weigh and transport the industrial waste to control the amount of industrial waste fed. The bottom end of the material pipe 16 is located inside the buffer silo 17. The top end of the material pipe 16 is equipped with a guide hopper 15, which is located below the belt of the belt scale 14. The industrial waste weighed by the belt scale 14 is discharged into the guide hopper 15 and then transported to the buffer silo 17 through the material pipe 16. The discharge port of the buffer silo 17 is connected to the inlet of the elevator 19 through a pipe. The discharge port of the elevator 19 is connected to the inlet of the preheater of the cement rotary kiln.

[0034] During operation, the industrial waste slag in the steel bin 12 is conveyed to the belt scale 14 by the screw feeder 13. The belt scale 14 weighs and conveys the industrial waste slag, and then it passes through the guide hopper 15, the material pipe 16 and the buffer bin 17 in sequence before entering the elevator 19. The elevator 19 sends the industrial waste slag into the preheater of the cement rotary kiln. After being preheated by the preheater, the industrial waste slag is fed into the cement rotary kiln. Because the industrial waste slag has better activity and reactivity, it can react with other raw materials more quickly, thereby promoting the formation of cement clinker. When using medium and low calorific value coal as fuel, it can increase the output of cement.

[0035] In one embodiment, the steel silo 12, screw feeder 13, belt scale 14, material pipe 16, buffer silo 17 and elevator 19 are all fixedly connected to the steel frame 11. The upper surface of the buffer silo 17 is equipped with a dust cover 18, which can prevent dust leakage from the buffer silo 17. The position of the feeding component 101 can be limited by the steel frame 11 to increase the stability of the structure.

[0036] In one embodiment, a dust removal component 301 is installed on the frame of the belt scale 14. During the operation of the feeding component 101, a large amount of dust is generated because industrial waste falls directly onto the belt scale 14, causing air pollution. The dust removal component 301 can collect the dust and play a role in dust removal.

[0037] Dust removal assembly 301 includes two arc-shaped dust suction hoods 31 and dust suction holes 32;

[0038] Two arc-shaped dust suction hoods 31 are symmetrically installed on the frame of the belt scale 14. Dust suction holes 32 are equidistantly opened on the inner side wall of the arc-shaped dust suction hoods 31. The right end of the arc-shaped dust suction hoods 31 is located above the guide hopper 15. The two arc-shaped dust suction hoods 31 are symmetrically located above the belt scale 14. Through the arc-shaped dust suction hoods 31, not only can the dust generated when the belt scale 14 transports industrial waste slag be removed, but also the dust generated when the industrial waste slag enters the guide hopper 15 can be removed.

[0039] The dust removal assembly 301 also includes two suction pipes 33, a dust collection box 34, and a negative pressure fan 35;

[0040] The top ends of the two suction pipes 33 are symmetrically installed on the outer walls of the two arc-shaped suction hoods 31. The negative pressure fan 35 is installed on one side of the lower surface of the dust collection box 34. The bottom ends of the two suction pipes 33 are symmetrically installed on the outer walls of the dust collection box 34. The suction pipes 33 are connected to the dust collection box 34 and the arc-shaped suction hoods 31 respectively. When the negative pressure fan 35 is working, the arc-shaped suction hoods 31 are under negative pressure. At this time, the outside air and dust enter the arc-shaped suction hoods 31 through the suction holes 32 and then flow into the dust collection box 34 through the suction pipes 33.

[0041] In one embodiment, a filter plate 36 is installed inside the dust collection box 34, with two suction pipes 33 located on the right side of the filter plate 36 and a negative pressure fan 35 located on the left side of the filter plate 36. When dust enters the dust collection box 34, it can be filtered by the filter plate 36, allowing the dust to remain in the dust collection box 34, thereby achieving dust collection.

[0042] In one embodiment, the dust collection box 34 is installed inside the frame of the belt scale 14, and the dust collection box 34 is provided with a sealed door, which can be opened to clean the filter plate 36 inside.

[0043] In operation, the industrial waste in the steel bin 12 is conveyed to the belt scale 14 by the screw feeder 13. The belt scale 14 weighs and conveys the industrial waste, which then passes through the guide hopper 15, the material pipe 16 and the buffer bin 17 in sequence before entering the elevator 19. The elevator 19 sends the industrial waste into the preheater of the cement rotary kiln. After being preheated by the preheater, the industrial waste is fed into the cement rotary kiln.

[0044] When the belt scale 14 transports industrial waste, a large amount of dust is generated. At this time, the negative pressure fan 35 works, and the arc-shaped dust collection hood 31 is in a negative pressure state. External air and dust enter the arc-shaped dust collection hood 31 through the dust collection hole 32, and then flow into the dust collection box 34 through the dust collection pipe 33. The dust can be filtered by the filter plate 36, so that the dust is retained in the dust collection box 34, thereby realizing the collection of dust.

[0045] Compared with existing technologies, this utility model achieves automated feeding of industrial waste residue through the combination of structures such as screw feeder 13, belt scale 14, material pipe 16, buffer bin 17, and elevator 19, which improves the working efficiency of cement clinker production, reduces the labor intensity of workers, and can meet the needs of large-scale production.

[0046] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A coal preheating feeding mechanism comprising a steel frame (11), characterized in that: The steel frame (11) is equipped with a feeding assembly (101), which includes a steel bin (12), a screw feeder (13), a belt scale (14), a material pipe (16), a buffer bin (17), and a hoist (19); The screw feeder (13) is installed at the outlet of the steel bin (12). The outlet of the screw feeder (13) corresponds to the position of the belt scale (14). The bottom end of the material pipe (16) is located inside the buffer bin (17). The top end of the material pipe (16) is equipped with a guide hopper (15). The guide hopper (15) is located below the belt of the belt scale (14). The outlet of the buffer bin (17) is connected to the inlet of the elevator (19) through a pipe. The belt scale (14) is equipped with a dust removal assembly (301) on its frame. The dust removal assembly (301) includes two arc-shaped dust suction hoods (31) and a dust suction hole (32). Two arc-shaped dust collection hoods (31) are symmetrically installed on the frame of the belt scale (14). The dust collection holes (32) are equidistantly opened on the inner side wall of the arc-shaped dust collection hoods (31). The right end of the arc-shaped dust collection hoods (31) is located above the guide hopper (15).

2. The coal preheating and dosing mechanism according to claim 1, characterized in that: The steel bin (12), screw feeder (13), belt scale (14), material pipe (16), buffer bin (17) and elevator (19) are all fixedly connected to the steel frame (11), and the upper surface of the buffer bin (17) is equipped with a dust cover (18).

3. The coal preheating and dosing mechanism according to claim 1, characterized in that: The dust removal assembly (301) also includes two suction pipes (33), a dust collection box (34), and a negative pressure fan (35); The top ends of the two suction pipes (33) are symmetrically installed on the outer walls of the two arc-shaped suction hoods (31), and the negative pressure fan (35) is installed on one side of the lower surface of the dust collection box (34).

4. The coal preheating and dosing mechanism according to claim 3, characterized in that: The bottom ends of the two suction pipes (33) are symmetrically installed on the outer side wall of the dust collection box (34).

5. The coal preheating and dosing mechanism according to claim 4, characterized in that: The suction pipe (33) is connected to the dust collection box (34) and the arc-shaped suction hood (31) respectively.

6. The coal preheating and dosing mechanism according to claim 3, characterized in that: The dust collection box (34) is equipped with a filter plate (36).

7. A coal preheating dosing mechanism according to claim 6, characterized in that: Both suction pipes (33) are located on the right side of the filter plate (36), and the negative pressure fan (35) is located on the left side of the filter plate (36).

8. The coal preheating and dosing mechanism according to claim 3, characterized in that: The dust collection box (34) is installed inside the frame of the belt scale (14), and the two arc-shaped dust suction hoods (31) are symmetrically located above the belt scale (14).

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