A blast furnace pulverized coal injection conveying device

Abstract

This utility model relates to the field of conveying equipment technology, specifically a blast furnace pulverized coal conveying device, including a conveying pipe, a feeding hopper, and a second motor. The bottom of the feeding hopper is connected to the left side of the upper surface of the conveying pipe via the feeding pipe, and the left side of the upper surface of the feeding hopper is connected to an adding hopper. During operation, pulverized coal is added to the feeding hopper along the adding hopper. The first and second motors are started. The first motor drives the rotating shaft, dispersing rod, and auger to rotate rapidly. As the pulverized coal falls, the dispersing rod disperses it, preventing clumping. Under the conveying action of the auger, the pulverized coal at the bottom of the feeding hopper is fed into the conveying pipe, preventing blockage at the discharge port. The second motor drives the connecting rod and the feeding plate to rotate counterclockwise, assisting in feeding and allowing the pulverized coal to pass smoothly through the bends in the conveying pipe. This reduces pulverized coal blockage at the discharge port and pipe bends, improving conveying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of conveying equipment technology, specifically a blast furnace pulverized coal conveying equipment. Background Technology

[0002] Pulverized coal injection (PCI) technology is a crucial energy-saving and consumption-reducing technology in modern blast furnace ironmaking. Its core is to use a pneumatic conveying system to stably and continuously inject prepared pulverized coal from the pulverized coal silo into the blast furnace tuyeres, replacing some of the expensive metallurgical coke and thus significantly reducing pig iron costs.

[0003] Currently, some problems have been found in the use of pulverized coal injection conveying equipment for blast furnaces. First, pulverized coal is prone to blockage during the conveying process, especially at pipe bends and discharge ports. This not only affects the conveying efficiency but may also lead to equipment downtime for maintenance, increasing production costs. Therefore, a new pulverized coal injection conveying equipment for blast furnaces is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a pulverized coal injection conveying device for blast furnaces to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blast furnace pulverized coal injection conveying device, comprising a conveying pipe, a feeding hopper, and a second motor. A feeding pipe connects the bottom of the feeding hopper to the left side of the upper surface of the conveying pipe. An adding hopper connects to the left side of the upper surface of the feeding hopper. A first motor is installed in the middle of the upper surface of the feeding hopper. The bottom end of the first motor extends into the inside of the feeding hopper and is fixedly connected to a rotating shaft. The rotating shaft passes through the feeding pipe and extends into the conveying pipe. Dispersing rods are uniformly fixedly connected to the upper part of the outer side wall of the rotating shaft. An auger is fixedly connected to the bottom of the outer side wall of the rotating shaft. One end of the output shaft of the second motor extends into the inside of the conveying pipe and is fixedly connected to a connecting rod. Feeding plates are uniformly fixedly connected to the outer side wall of the connecting rod. The feeding plates are located at the bends of the conveying pipe.

[0006] As a further preferred embodiment of this technical solution: a bracket is fixedly connected to the right side of the front surface of the conveying pipe, and the front surface of the second motor is mounted on the inner side wall of the bracket.

[0007] As a further preferred embodiment of this technical solution: an electric heating tape is wound around the outer wall of the conveying pipe, and the outer wall of the electric heating tape is wrapped with a heat-insulating cotton layer.

[0008] As a further preferred embodiment of this technical solution: one end of the electric heating tape is connected to a control button, and the electrical input end of the electric heating tape is electrically connected to the electrical output end of the control button via a wire.

[0009] As a further preferred embodiment of this technical solution: a cover plate is hinged to the top of the outer side wall of the adding hopper.

[0010] As a further preferred embodiment of this technical solution: a pull ring is fixedly connected to the front side of the upper surface of the cover plate.

[0011] As a further preferred embodiment of this technical solution: a control panel is installed on the front surface of the feed hopper, and the electrical output terminal of the control panel is electrically connected to the electrical input terminals of motor one and motor two respectively through wires.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In operation, pulverized coal is added to the feed hopper along the addition hopper. Motor 1 and Motor 2 are started. Motor 1 drives the rotating shaft, dispersing rod, and auger to rotate rapidly. As the pulverized coal falls, the dispersing rod disperses it, preventing clumping. Under the conveying action of the auger, the pulverized coal at the bottom of the feed hopper is fed into the conveying pipe, preventing blockage at the discharge port. Motor 2 drives the connecting rod and feeding plate to rotate counterclockwise, assisting in feeding and allowing the pulverized coal to pass smoothly through the bends in the conveying pipe. This reduces pulverized coal blockage at the discharge port and pipe bends, improves conveying efficiency, reduces the probability of downtime for maintenance, thereby lowering production costs and facilitating pulverized coal injection operations in blast furnaces. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a cross-sectional view of the conveying pipe in this utility model;

[0017] Figure 4 This is a cross-sectional view of the feed hopper in this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the present invention with the addition of a bucket and a cover plate.

[0019] In the picture:

[0020] 1. Conveying pipe; 2. Feed hopper; 3. Feeding pipe; 4. Adding hopper; 5. Motor 1; 6. Rotating shaft; 7. Dispersing rod; 8. Screwdriver; 9. Motor 2; 10. Connecting rod; 11. Feeding plate; 12. Electric heating tape; 13. Insulation cotton layer; 14. Control button; 15. Cover plate; 16. Pull ring; 17. Control panel; 18. Support frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "equipment" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Please see Figure 1-5This utility model provides a technical solution: a blast furnace pulverized coal injection conveying device, including a conveying pipe 1, a feeding hopper 2, and a second motor 9. A feeding pipe 3 connects the bottom of the feeding hopper 2 to the left side of the upper surface of the conveying pipe 1. An adding hopper 4 connects to the left side of the upper surface of the feeding hopper 2. A first motor 5 is installed in the middle of the upper surface of the feeding hopper 2. The bottom end of the first motor 5 extends into the feeding hopper 2 and is fixedly connected to a rotating shaft 6. The rotating shaft 6 passes through the feeding pipe 3 and extends into the conveying pipe 1. Dispersing rods 7 are evenly fixedly connected to the upper part of the outer wall of the rotating shaft 6, and an auger 8 is fixedly connected to the bottom of the outer wall of the rotating shaft 6. One end of the output shaft of the second motor 9 extends into the conveying pipe 1 and is fixedly connected to a connecting rod 10. A feeding plate 11 is evenly fixedly connected to the outer wall of the connecting rod 10, and the feeding plate 11 is located at the bend of the conveying pipe 1. The left end of the conveying pipe 1 is connected to an external pneumatic conveying system. Coal powder is added to the feed hopper 2 along the adding hopper 4. Motor 1 5 and motor 2 9 are started. Motor 1 5 drives the rotating shaft 6, the dispersing rod 7, and the auger 8 to rotate rapidly. During the process of coal powder falling, the dispersing rod 7 disperses the coal powder to prevent coal powder from clumping. Under the conveying action of the auger 8, the coal powder at the bottom of the feed hopper 2 can be sent into the conveying pipe 1 to avoid blockage at the discharge port. Motor 2 9 drives the connecting rod 10 and the feeding plate 11 to rotate counterclockwise to assist in feeding and allow the coal powder to pass smoothly through the bends of the conveying pipe 1. This reduces the occurrence of coal powder blockage at the discharge port and pipe bends, improves conveying efficiency, reduces the probability of downtime maintenance, and thus reduces production costs, bringing convenience to blast furnace pulverized coal injection operations.

[0024] In this specific example: a bracket 18 is fixedly connected to the right side of the front surface of the conveying pipe 1, and the front surface of the motor 2 9 is mounted on the inner side wall of the bracket 18; this facilitates the installation of the motor 2 9.

[0025] In this specific example: an electric heating tape 12 is wrapped around the outer wall of the conveying pipe 1, and an insulation cotton layer 13 is wrapped around the outer wall of the electric heating tape 12; with the help of the heat generated by the electric heating tape 12 and the insulation effect of the insulation cotton layer 13, the pipe wall temperature can be maintained, and the coal powder can be prevented from condensing due to excessively low temperature.

[0026] In this specific example: one end of the electric heating cable 12 is connected to a control button 14, and the electrical input terminal of the electric heating cable 12 is electrically connected to the electrical output terminal of the control button 14 through a wire; this facilitates the control of the electric heating cable 12.

[0027] In this specific example: a cover plate 15 is hinged to the top of the outer wall of the feeding hopper 4; after feeding is completed, the cover plate 15 is closed to prevent external debris from entering the feeding hopper 2.

[0028] In this specific example, a pull ring 16 is fixedly connected to the front side of the upper surface of the cover plate 15, which facilitates opening and closing the cover plate 15.

[0029] In this specific example: a control panel 17 is installed on the front surface of the feed hopper 2. The electrical output terminal of the control panel 17 is electrically connected to the electrical input terminals of motor 5 and motor 9 through wires, respectively, to facilitate the control of the working status of motor 5 and motor 9.

[0030] The working principle of this utility model is as follows: Coal powder is added to the feed hopper 2 along the feeding hopper 4. Motor 5 and motor 9 are started. Motor 5 drives the rotating shaft 6, the dispersing rod 7, and the auger 8 to rotate rapidly. During the process of coal powder falling, the dispersing rod 7 disperses the coal powder to prevent coal powder from clumping. Under the conveying action of the auger 8, the coal powder at the bottom of the feed hopper 2 can be sent into the conveying pipe 1 to avoid blockage at the discharge port. Motor 9 drives the connecting rod 10 and the feeding plate 11 to rotate counterclockwise to assist in feeding and allow the coal powder to pass smoothly through the bends of the conveying pipe 1. This reduces the occurrence of coal powder blockage at the discharge port and pipe bends, improves conveying efficiency, reduces the probability of downtime maintenance, and thus reduces production costs, bringing convenience to blast furnace pulverized coal injection operation. With the help of the electric heating tape 12 for heat generation and the insulation effect of the insulation cotton layer 13, the pipe wall temperature can be maintained to prevent water vapor condensation caused by low temperature and coal powder clumping.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blast furnace pulverized coal injection conveying device, characterized in that: The device includes a conveying pipe (1), a feeding hopper (2), and a second motor (9). The bottom of the feeding hopper (2) is connected to the left side of the upper surface of the conveying pipe (1) by a feeding pipe (3). The left side of the upper surface of the feeding hopper (2) is connected to an adding hopper (4). A first motor (5) is installed in the middle of the upper surface of the feeding hopper (2). The bottom end of the first motor (5) extends into the inside of the feeding hopper (2) and is fixedly connected to a rotating shaft (6). The rotating shaft (6) passes through the feeding pipe (3) and extends into the conveying pipe (1). A dispersing rod (7) is evenly fixedly connected to the upper part of the outer side wall of the rotating shaft (6). An auger (8) is fixedly connected to the bottom of the outer side wall of the rotating shaft (6). One end of the output shaft of the second motor (9) extends into the inside of the conveying pipe (1) and is fixedly connected to a connecting rod (10). A feeding plate (11) is evenly fixedly connected to the outer side wall of the connecting rod (10). The feeding plate (11) is located at the pipe bend of the conveying pipe (1).

2. The pulverized coal injection conveying equipment for blast furnaces according to claim 1, characterized in that: A bracket (18) is fixedly connected to the right side of the front surface of the conveying pipe (1), and the front surface of the second motor (9) is mounted on the inner wall of the bracket (18).

3. The pulverized coal injection conveying equipment for blast furnaces according to claim 2, characterized in that: The outer wall of the conveying pipe (1) is wrapped with an electric heating tape (12), and the outer wall of the electric heating tape (12) is covered with a heat-insulating cotton layer (13).

4. The pulverized coal injection conveying equipment for blast furnaces according to claim 3, characterized in that: One end of the electric heating tape (12) is connected to a control button (14), and the electrical input end of the electric heating tape (12) is electrically connected to the electrical output end of the control button (14) through a wire.

5. The pulverized coal injection conveying equipment for blast furnaces according to claim 4, characterized in that: The top of the outer wall of the adding bucket (4) is hinged with a cover plate (15).

6. The pulverized coal injection conveying equipment for blast furnaces according to claim 5, characterized in that: A pull ring (16) is fixedly connected to the front side of the upper surface of the cover plate (15).

7. The pulverized coal injection conveying equipment for blast furnaces according to claim 6, characterized in that: The front surface of the feed hopper (2) is equipped with a control panel (17), and the electrical output terminal of the control panel (17) is electrically connected to the electrical input terminals of the first motor (5) and the second motor (9) respectively through wires.

Images