Dust removal equipment for cement processing

Abstract

The utility model relates to the technical field of cement production, in particular to dust removal equipment for cement processing, which adopts the technical scheme that the dust removal equipment comprises a feed hopper, a discharge chute, a top shell, a feed pipe, a dust discharge fan and a guide plate, the dust discharge fan is fixedly mounted above the front surface of the discharge groove; the front face of the dust exhaust fan communicates with a communicating pipe, the top of the communicating pipe communicates with a dust exhaust pipe, and the end, away from the communicating pipe, of the dust exhaust pipe communicates with the top shell. Wherein the bottom of the dust discharge fan is communicated with an air return pipe, and the bottom end of the air return pipe is communicated with the discharge groove; the included angle between the bottom of the air return pipe and the front outer wall of the discharge groove is 30 degrees; the guide plate is fixedly mounted on one side, deviating from the feeding pipe, of the inner wall of the feeding hopper; the number of the material guiding plates is four, and the material guiding plates are welded and installed on the inner wall of the feeding hopper at equal intervals. The equipment aims to reduce raised dust and ensure that the internal pressure of the hopper is stable at the same time, so that the safety and environmental friendliness in the cement conveying process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cement production, in particular to dust removal equipment used in cement processing. Background Art

[0002] Cement is a powdered, hydraulically hardened inorganic cementitious material that forms a slurry when mixed with water and further hardens in air or water. The hardened cement not only possesses high strength but is also resistant to corrosion by both fresh and salt water. As a key building cementitious material, cement is widely used in various fields, including civil engineering, hydraulic engineering, and national defense construction.

[0003] After extensive searching, a Chinese utility model patent, publication number CN216470724U, discloses a cement conveying hopper, comprising a mixing box, a conical box installed on the top of the mixing box, a filter plate installed on the inner wall of the top end of the mixing box, a stirring mechanism rotating inside the mixing box, the stirring mechanism being close to the inner bottom wall of the mixing box; a cleaning mechanism being provided at the bottom of the filter plate, a cavity being formed on the inner wall of one side of the mixing box, a rotating mechanism being accommodated in the cavity, a driving mechanism being installed at the driving end of the rotating mechanism, and an adjusting mechanism being provided at the coupling between the rotating mechanism and the cleaning mechanism.

[0004] The aforementioned cement conveying hopper is capable of removing impurities and particulate matter adhering to the filter pores, ensuring that the filter plate effectively filters impurities and particulate matter from the cement, thereby increasing the cement delivery rate. However, during the cement processing process, using a hopper to convey cement still presents some problems. When the cement is conveyed too quickly, a large amount of dust is generated when the cement enters the hopper, which not only affects the environment but also poses a threat to the health of operators. Furthermore, if a sealed hopper is used, the rapid increase in internal pressure can also pose a safety hazard.

[0005] To address these issues, a dust removal device for cement processing was proposed. This device aims to reduce dust while ensuring stable pressure inside the hopper, thereby improving the safety and environmental friendliness of the cement transportation process. Utility Model Content

[0006] The purpose of the utility model is to provide a dust removal equipment for cement processing, which has the advantages of reducing dust when cement enters the hopper and controlling the pressure inside the hopper to be stable, and solves the problem that when the cement conveying speed is too fast, a large amount of dust will be generated when the cement enters the hopper, which not only affects the environment but also may pose a threat to the health of the operators. At the same time, when a sealed hopper is used, the sharp increase in internal pressure will also bring safety hazards.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a dust removal device for cement processing, comprising a feed hopper, a discharge chute connected to the bottom end of the feed hopper, a top shell fixedly installed on the top of the feed hopper, a feed pipe connected to the back end of the feed hopper, and a dust exhaust fan and a guide plate;

[0008] The dust exhaust fan is fixedly installed above the front of the discharge chute;

[0009] Among them, a connecting pipe is installed in front of the dust exhaust fan, a dust exhaust pipe is installed on the top of the connecting pipe, and the end of the dust exhaust pipe away from the connecting pipe is connected to the top shell;

[0010] Among them, the bottom of the dust exhaust fan is connected to the return air pipe, and the bottom end of the return air pipe is connected to the discharge chute;

[0011] Among them, the angle between the bottom of the return air pipe and the front outer wall of the discharge chute is thirty degrees;

[0012] The guide plate is fixedly installed on the side of the inner wall of the feed hopper away from the feed pipe;

[0013] There are four guide plates, which are welded and installed on the inner wall of the feed hopper at equal distances.

[0014] Preferably, the back of the feed hopper is flush with the back outer wall of the discharge chute, the bottom of the front of the feed hopper tapers toward the top of the discharge chute, and a connecting bracket is fixedly mounted on the outside of the top of the feed hopper. In this design, the back of the feed hopper is flush with the back outer wall of the discharge chute, while the front of the feed hopper tapers toward the bottom. This design helps the cement fall smoothly and reduces dust caused by contact with the feed hopper.

[0015] The discharge chute preferably features a rectangular cross-section, with the top welded to the bottom of the feed hopper. A first pre-set hole is defined below the front of the chute, into which the bottom of the return air pipe is embedded. This rectangular cross-section provides more space, facilitating smooth cement flow and minimizing clogging. The welded connection ensures structural stability and sealing. The bottom of the return air pipe is embedded within the first pre-set hole, improving return air efficiency, minimizing dust leakage, and balancing pressure.

[0016] Preferably, a second pre-set hole is provided in the center of the top of the top shell, through which the dust exhaust pipe is connected and installed. A connecting bracket is fixedly mounted on the outer bottom of the top shell, with positioning holes provided at each corner of the connecting bracket. The dimensions of the connecting bracket on the top shell match those of the connecting bracket on the feed hopper, and the connection is fixed by bolts. The combination of the second pre-set hole and the connecting bracket in the design provides a relatively stable mounting platform for the top shell, ensuring the stability of the structure connected to the top shell. At the same time, the provision of the positioning holes ensures precise alignment and fixation between adjacent components.

[0017] Preferably, a sealing ring is mounted on the opposite side of the connecting frame on the top shell and the connecting frame on the feed hopper. The sealing ring has a rectangular cross-sectional design, and a cross-shaped retaining frame is embedded inside the sealing ring. The combination of the sealing ring and retaining frame provides excellent sealing performance, preventing dust and gas leakage. The cross-shaped retaining frame design increases the stability of the sealing ring after installation.

[0018] Preferably, the inner diameter of the connecting pipe matches that of the dust exhaust pipe, and the connecting pipe is connected to the dust exhaust pipe through a connecting flange. The matching of the inner diameters of the connecting pipe and the dust exhaust pipe in the design ensures the continuity and efficiency of gas flow, and the connecting flange allows for quick installation and maintenance.

[0019] Preferably, the return air duct adopts a variable diameter pipe structure design, with a round top and a flat bottom. The variable diameter pipe structure design allows the gas to flow at different flow rates at different stages. The round top design helps reduce air resistance, while the flat bottom design helps improve gas collection efficiency.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The utility model provides a dust exhaust fan and fixes the dust exhaust fan above the front of the discharge chute, so that the dust generated by the contact between the cement and the feed hopper during transportation can be effectively extracted from the inner side of the top shell through the dust exhaust pipe and the connecting pipe, thereby reducing dust. At the same time, the guide plates are fixed on the side of the inner wall of the feed hopper away from the feed pipe. There are four guide plates and they are welded and installed at equal intervals, which helps to guide the flow of cement and reduce the impact and dust when the cement enters the hopper. The dust exhaust pipe is connected to the top shell to effectively discharge the dust to the outside of the equipment, avoid dust accumulation inside the hopper, and reduce dust.

[0022] 2. The utility model sets an air return pipe, and enables the dust exhaust fan to discharge the dust through the connecting pipe and the dust exhaust pipe. At the same time, the air return pipe at the bottom re-injects the dust-raising gas into the bottom of the discharge trough, thereby forming an internal circulation, which helps to reduce the diffusion and dust emission of dust. The thirty-degree angle formed by the bottom of the air return pipe and the front outer wall of the discharge trough helps to optimize the gas flow path, improve the air return efficiency, and reduce dust emission. Through the cooperation of the above-mentioned dust exhaust and air return systems, even when used in a sealed hopper, the air pressure in the hopper can be effectively controlled to avoid the safety hazards caused by the sharp increase in pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0024] Figure 2It is a schematic diagram of the cross-sectional structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the feed hopper connection structure of the utility model;

[0026] Figure 4 This is a schematic diagram of the sealing ring structure of the utility model;

[0027] Figure 5 This is a schematic diagram of the top shell structure of the present utility model.

[0028] In the figure: 1. Discharge chute; 2. Feed hopper; 3. Top shell; 4. Feed pipe; 5. Dust exhaust pipe; 6. Connecting pipe; 7. Dust exhaust fan; 8. Return air pipe; 9. Sealing ring; 10. Connecting flange; 11. Guide plate; 12. Connecting frame; 13. First reserved hole; 14. Limiting frame; 15. Second reserved hole; 16. Positioning hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Example 1

[0031] like Figures 1 to 5 As shown, the utility model provides an embodiment: a dust removal device for cement processing, comprising a feed hopper 2, a discharge chute 1 connected to the bottom end of the feed hopper 2, a top shell 3 fixedly installed on the top of the feed hopper 2, a feed pipe 4 connected to the back end of the feed hopper 2, a dust exhaust fan 7 and a guide plate 11;

[0032] Specifically, by setting up a dust exhaust fan 7 and fixing the dust exhaust fan 7 above the front of the discharge chute 1, the dust generated by the contact between the cement and the feed hopper during transportation can be effectively sucked away from the inside of the top shell through the dust exhaust pipe and the connecting pipe, thereby reducing dust. At the same time, the guide plate 11 is fixed on the side of the inner wall of the feed hopper 2 away from the feed pipe 4. There are four guide plates 11 and they are welded and installed at equal distances, which helps to guide the flow of cement and reduce the impact and dust when the cement enters the hopper. The dust exhaust pipe 5 is connected to the top shell 3 to effectively discharge the dust to the outside of the equipment and avoid dust accumulation inside the hopper. Gather and reduce dust; by setting up the return air pipe 8, and making the dust exhaust fan 7 discharge the dust through the connecting pipe 6 and the dust exhaust pipe 5, at the same time, the return air pipe 8 at the bottom re-injects the dust gas into the bottom of the discharge trough 1, thereby forming an internal circulation, which helps to reduce the diffusion and dust of dust. The thirty-degree angle formed by the bottom of the return air pipe 8 and the front outer wall of the discharge trough 1 helps to optimize the gas flow path, improve the return air efficiency, and reduce dust. Through the cooperation of the above-mentioned dust exhaust and return air systems, even if used in a sealed hopper, the air pressure in the hopper can be effectively controlled to avoid the safety hazards caused by the sharp increase in pressure.

[0033] Example 2

[0034] In order to reduce dust and improve the stability of connections between structures, such as Figure 3 and Figure 5 As shown, in this embodiment, the back of the feed hopper 2 is flush with the back outer wall of the discharge chute 1, the bottom of the front of the feed hopper 2 converges toward the top of the discharge chute 1, and a connecting frame 12 is fixedly mounted on the outside of the top of the feed hopper 2. In this design, the back of the feed hopper 2 is flush with the back outer wall of the discharge chute 1, while the front of the feed hopper 2 converges toward the bottom. This design helps the cement fall smoothly and reduces dust caused by contact with the feed hopper 2.

[0035] Furthermore, the discharge trough 1 adopts a rectangular cross-section design. The top of the discharge trough 1 is welded to the bottom of the feed hopper 2. A first reserved hole 13 is provided at the lower front of the discharge trough 1, and the bottom of the return air pipe 8 is embedded in this first reserved hole 13. This rectangular cross-section provides more space, facilitating the smooth flow of cement and reducing blockage. The welded connection ensures structural stability and sealing. The bottom of the return air pipe 8 is embedded in the first reserved hole 13, which helps improve air return efficiency, reduce dust leakage, and balance pressure.

[0036] Furthermore, a second reserved hole 15 is provided in the center of the top of the top shell 3, through which the dust exhaust pipe 5 is connected and installed. A connecting bracket 12 is fixedly mounted on the outer bottom of the top shell 3, and positioning holes 16 are provided at each of the four corners of the connecting bracket 12. The dimensions of the connecting bracket 12 on the top shell 3 match those of the connecting bracket 12 on the feed hopper 2, and they are fixedly connected by bolts. The coordinated use of the second reserved hole 15 and the connecting bracket 12 in the design provides a relatively stable mounting platform for the top shell 3, ensuring the stability of the structure connected to the top shell 3. At the same time, the provision of the positioning holes 16 ensures the precise alignment and fixation of adjacent components.

[0037] Example 3

[0038] In order to ensure the pressure balance inside the equipment when injecting cement, Figure 2 、 Figure 4 and Figure 5 As shown, in this embodiment, a sealing ring 9 is clamped and mounted on the opposite side of the connecting bracket 12 on the top shell 3 and the connecting bracket 12 on the feed hopper 2. The sealing ring 9 has a rectangular cross-sectional design, and a limiting bracket 14 is embedded inside the sealing ring 9. The limiting bracket 14 adopts a cross-shaped structure. The combination of the sealing ring 9 and the limiting bracket 14 provides excellent sealing performance, preventing the leakage of dust and gas. The cross-shaped limiting bracket 14 increases the stability of the sealing ring 9 after installation.

[0039] Furthermore, the inner diameter of the connecting pipe 6 matches the inner diameter of the dust exhaust pipe 5, and the connecting pipe 6 is connected to the dust exhaust pipe 5 through the connecting flange 10. The matching of the inner diameters of the connecting pipe 6 and the dust exhaust pipe 5 in the design ensures the continuity and efficiency of the gas flow, and the connecting flange 10 can be used for quick installation and maintenance.

[0040] Furthermore, the return air pipe 8 adopts a variable diameter pipe structure design, with a circular top and a flat bottom. The variable diameter pipe structure design allows the gas to flow at different flow rates at different stages. The circular top design helps to reduce air resistance, while the flat bottom design helps to improve gas collection efficiency.

[0041] When the present invention is in use, cement is transported to the feed hopper 2 through the feed pipe 4, and the guide plate 11 is installed on the inner wall of the feed hopper 2 to guide the flow of cement and reduce dust. The cement is guided by the guide plate 11 in the feed hopper 2 and gradually flows into the discharge trough 1 connected to the bottom end of the feed hopper 2. The cross-section of the discharge trough 1 is designed to be rectangular, which is conducive to the smooth flow of cement. The dust exhaust fan 7 is fixedly installed above the front of the discharge trough 1, and the raised dust in the discharge trough 1 is extracted through the connecting pipe 6 and the dust exhaust pipe 5 connected to the front thereof. The return air pipe 8 connected to the bottom of the dust exhaust fan 7 re-injects the extracted dust into the discharge trough 1, thereby forming a circulation and stabilizing the air pressure in the feed hopper 2. At the same time, the bottom end of the return air pipe 8 forms a thirty-degree angle with the outer wall of the front of the discharge trough 1, thereby optimizing the gas flow path and accelerating discharge. The return air pipe 8 adopts a reducer structure design, with a round top and a flat bottom, which optimizes the gas flow efficiency and the structural stability of the equipment.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A dust removal device for cement processing, comprising a feed hopper (2), wherein the bottom end of the feed hopper (2) is connected to a discharge chute (1), a top shell (3) is fixedly installed on the top of the feed hopper (2), and a feed pipe (4) is connected to the back of the feed hopper (2), characterized in that: Also includes: A dust exhaust fan (7) is fixedly installed above the front of the discharge chute (1); The dust exhaust fan (7) is connected to a connecting pipe (6) on the front, a dust exhaust pipe (5) is connected to the top of the connecting pipe (6), and the end of the dust exhaust pipe (5) facing away from the connecting pipe (6) is connected to the top shell (3). The bottom of the dust exhaust fan (7) is connected to a return air pipe (8), and the bottom end of the return air pipe (8) is connected to the discharge trough (1). The angle between the bottom of the return air pipe (8) and the front outer wall of the discharge trough (1) is thirty degrees; A material guide plate (11) is fixedly mounted on a side of the inner wall of the feed hopper (2) facing away from the feed pipe (4); There are four guide plates (11) which are welded and installed on the inner wall of the feed hopper (2) at equal distances.

2. The dust removal equipment for cement processing according to claim 1, characterized in that: The back of the feed hopper (2) is flush with the back outer wall of the discharge trough (1), the front bottom of the feed hopper (2) shrinks toward the front top of the discharge trough (1), and a connecting frame (12) is fixedly installed on the outer side of the top of the feed hopper (2).

3. The dust removal equipment for cement processing according to claim 1, characterized in that: The cross section of the discharge trough (1) is designed in a rectangular structure. The top of the discharge trough (1) is welded to the bottom of the feed hopper (2). A first reserved hole (13) is opened below the front of the discharge trough (1), and the bottom of the return air pipe (8) is embedded in the first reserved hole (13).

4. The dust removal equipment for cement processing according to claim 1, characterized in that: A second reserved hole (15) is provided in the middle of the top of the top shell (3), and the dust exhaust pipe (5) is connected and installed with the top shell (3) through the second reserved hole (15). A connecting frame (12) is fixedly installed on the bottom of the outer side of the top shell (3), and positioning holes (16) are provided at the four corners of the connecting frame (12). The size of the connecting frame (12) on the top shell (3) matches the size of the connecting frame (12) on the feed hopper (2), and they are fixedly connected by bolts.

5. A dust removal device for cement processing according to claim 2 or 4, characterized in that: A sealing ring (9) is clamped and installed on the opposite side of the connecting frame (12) on the top shell (3) and the connecting frame (12) on the feed hopper (2). The cross-sectional dimensions of the sealing ring (9) are designed with a rectangular structure. A limiting frame (14) is embedded inside the sealing ring (9). The limiting frame (14) is designed with a cross-shaped structure.

6. The dust removal equipment for cement processing according to claim 1, characterized in that: The inner diameter of the connecting pipe (6) matches the inner diameter of the dust exhaust pipe (5), and the connecting pipe (6) is connected and installed with the dust exhaust pipe (5) via a connecting flange (10).

7. The dust removal equipment for cement processing according to claim 1, characterized in that: The return air pipe (8) adopts a variable diameter pipe structure design, the top of the return air pipe (8) is circular, and the bottom of the return air pipe (8) adopts a flat structure design.

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