High-position coal conveying device

Abstract

This utility model discloses a high-level coal conveying device, which relates to the field of coal conveying technology. The device includes a high-level platform, a material frame, a high-level conveyor belt, a three-way distribution valve, a low-level conveyor belt, a coal drop pipe, tracks, guide rods, a top cover, wheels, a cylinder, an iron remover, a mixing rod, and a motor. The high-level platform is located on the outside of the channel and a material frame is fixed thereon. A high-level conveyor belt is provided on each side of the material frame to convey coal within the frame. Tracks are fixed on both sides of the top of the material frame. Guide rods are fixed on the inside of the tracks. A top cover is slidably mounted on the guide rod. The telescopic end of the cylinder is connected to one side of the top cover. An iron remover is fixed in the middle of the top cover. A three-way distribution valve is fixed within the corresponding channel of the high-level platform. A mixing rod is rotatably mounted at the two outlet positions of the three-way distribution valve. Each of the two outlets of the three-way distribution valve is connected to a coal drop pipe. A low-level conveyor belt is located below the outlet of the coal drop pipe.

Description

Technical Field

[0001] This utility model relates to the field of coal conveying technology, specifically to a high-level coal conveying device. Background Technology

[0002] During the coal transportation process for circulating fluidized bed boilers, coal needs to be transported from the coal storage yard to the circulating fluidized bed boiler from a low position via a conveyor bridge. During the transportation process, the coal is transported from the ground coal storage yard to a high position, and different types of coal are mixed before being moved down from the high position to be used in the furnace. This transportation process is planned based on the location of the boilers within the plant area.

[0003] Because mixed coal has a certain moisture content, it is prone to sticking together, which can easily cause blockages in traditional coal chutes. Secondly, if iron pieces get mixed into the coal and enter the coal chute during the transportation process, it can also easily cause blockages and even damage equipment in subsequent processes. Utility Model Content To address the shortcomings of existing technologies, this utility model provides a high-level coal conveying device. This device employs a "one-in-use, one-out-of-use" mode, providing a backup conveying channel that can be switched during maintenance or other situations. It removes iron and disperses the coal before it enters the coal chute. This prevents the coal entering the chute from containing iron particles and disperses any adhering coal, significantly reducing the occurrence of coal blockage in the chute.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A high-level coal conveying device includes a high-level platform, a material frame, a high-level conveyor belt, a three-way material distribution valve, a low-level conveyor belt, a coal drop pipe, rails, guide rods, a top cover, wheels, and a cylinder; an iron separator; a mixing rod; and a motor. The surface of the high-level platform has a channel connecting to the area below the platform. A material frame is fixed to the outside of the channel on the high-level platform. A high-level conveyor belt is installed on each side of the material frame to convey coal within the frame. Rails are fixed to the top of the material frame on both sides. Guide rods are fixed to the inside of the rails on the material frame. A top cover slides on the guide rods. Wheels are installed on the top cover corresponding to the rail positions. A cylinder is fixed to the outside of one end of the material frame corresponding to the direction of travel of the top cover. The telescopic end of the cylinder is connected to one side of the top cover. An iron separator is fixed to the middle of the top cover. A three-way material distribution valve is fixed in the corresponding channel of the high-level platform; the inlet of the three-way material distribution valve is connected to the bottom of the material frame; a mixing rod is rotatably installed at the two outlet positions of the three-way material distribution valve; the mixing rod is driven by a motor; the two outlets of the three-way material distribution valve are respectively connected to a coal drop pipe; a low-level conveyor belt is installed below the outlet of the coal drop pipe.

[0005] Preferably, a bracket is fixed below the track extending beyond the material frame; the top cover has a mounting hole for engaging the iron remover; the iron remover is engaged in the mounting hole, with its bottom exposed inside the material frame.

[0006] Preferably, the material frame has notches on both sides corresponding to the positions of the high-level conveyor belt, and the discharge end of the high-level conveyor belt overlaps in the notches.

[0007] Preferably, the discharge port of the coal chute is fixed in the middle of the positioning frame; the low-level conveyor belt is arranged inside the positioning frame; protective plates are provided on both sides of the discharge port on the inner side of the positioning frame; the spacing between the protective plates is less than the width of the low-level conveyor belt.

[0008] Preferably, the coal chute is equipped with an inspection door.

[0009] Preferably, the bottom of the material frame is connected to the three-way material distribution valve via a slope transition.

[0010] The beneficial effects of this utility model are: 1. The device is equipped with an iron remover on the top cover. The iron remover can move with the top cover. When it moves to the outside of the material frame, it is convenient to discharge the adsorbed iron parts. During operation, it reduces the exposed position of the falling coal and facilitates the iron removal operation of the mixed coal.

[0011] 2. Before the coal enters the coal chute, the coal is dispersed by a mixing rod to prevent the coal from sticking together and causing blockage of the coal chute.

[0012] 3. The three-way feed valve allows you to select one side of the coal chuting pipe for use. If one side needs maintenance, the three-way feed valve can switch the coal chuting pipe to ensure normal equipment conveying without stopping the machine for maintenance. Attached Figure Description To more clearly illustrate the technical solutions in the embodiments of this utility model 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall connection relationship of this utility model.

[0014] Figure 2 This is a schematic diagram of the side connection relationship of this utility model.

[0015] Figure 3 This is a disassembly diagram showing the connection relationship of the three-way feed valve of this utility model.

[0016] Figure 4This is a schematic diagram of the top cover connection structure of this utility model.

[0017] Figure 5 This is a cross-sectional structural diagram of the three-way feed valve of this utility model.

[0018] Figure 6 This is a partial schematic diagram of the material frame connection relationship of this utility model.

[0019] In the diagram, the components are: 1. High-level platform; 2. Material frame; 2.1. Notch; 2.2. Slope; 3. High-level conveyor belt; 4. Three-way material distribution valve; 5. Low-level conveyor belt; 6. Coal drop pipe; 7. Track; 8. Guide rod; 9. Top cover; 10. Traveling wheel; 11. Cylinder; 12. Iron remover; 13. Mixing rod; 14. Motor; 15. Positioning frame; 16. Protective plate; 17. Inspection door; 18. Support. Detailed Implementation like Figure 1-4 As shown, a high-level coal conveying device is used for conveying coal from a high level to a low level. A channel connecting the upper part of the platform is opened on the surface of the high-level platform 1; a material frame 2 is fixed on the outer side of the high-level platform 1 outside the channel; a high-level conveyor belt 3 is provided on both sides of the material frame 2 to convey coal into the material frame 2; notches 2.1 are opened on both sides of the material frame 2 corresponding to the positions of the high-level conveyor belt 3, and the discharge end of the high-level conveyor belt 3 overlaps in the notch 2.1. Tracks 7 are fixed to the top two sides of the material frame 2; a bracket 18 is fixed below the tracks 7 extending beyond the material frame 2; a guide rod 8 is fixed to the material frame 2 inside the tracks 7; a top cover 9 is slidably mounted on the guide rod 8; a traveling wheel 10 is mounted on the top cover 9 corresponding to the position of the tracks 7; a cylinder 11 is fixed to the outer side of one end of the material frame 2 corresponding to the traveling direction of the top cover 9; the telescopic end of the cylinder 11 is connected to one side of the top cover 9; a magnetic separator 12 is fixed to the middle of the top cover 9; a mounting hole for engaging the magnetic separator 12 is opened on the top cover 9, specifically, the magnetic separator 12 is engaged in the mounting hole, and the bottom of the magnetic separator 12 is exposed inside the material frame 2. The position of the magnetic separator 12 can be controlled by the cylinder 11. When the cylinder 11 is retracted, the top cover 9 is located above the material frame 2, covering the top opening of the material frame 2. When the cylinder 11 extends, the magnetic separator 12 detaches from the material frame 2, which can be used to remove iron parts from the surface of the magnetic separator 12 to prevent them from falling into the three-way material distribution valve 4 during cleaning.

[0020] like Figure 4-6As shown, a three-way material distribution valve 4 is fixed in the corresponding channel of the high-level platform 1; the connection between the bottom of the material frame 2 and the three-way material distribution valve 4 is transitioned by a slope 2.2 to avoid material jamming. The inlet of the three-way material distribution valve 4 is connected to the bottom of the material frame 2; a mixing rod 13 is rotatably installed at the two outlet positions of the three-way material distribution valve 4; the mixing rod 13 is driven by a motor 14; the two outlets of the three-way material distribution valve 4 are respectively connected to a coal drop pipe 6; a low-level conveyor belt 5 is installed below the outlet of the coal drop pipe 6. Furthermore, the outlet of the coal drop pipe 6 is fixed in the middle of the positioning frame 15; the low-level conveyor belt is set inside the positioning frame 15; protective plates 16 are installed on both sides of the outlet on the inside of the positioning frame 15; the spacing of the protective plates 16 is less than the width of the low-level conveyor belt 5. The positioning frame 15 plays a role in fixing the coal drop pipe 6 to ensure the overall stability of the coal drop pipe 6. The body of the coal drop pipe 6 is equipped with an inspection door 17. When one side is out of service, maintenance can be carried out through inspection door 17. Unless otherwise described above, the fixing method is welded or threaded fastened using common technical means employed by industry professionals.

[0021] The working principle is as follows: The coal storage yard transports coal to a high position via a conveyor bridge. After being processed by various process equipment within the plant area, the coal is then transferred to the high-level conveyor belt 3. The high-level conveyor belt 3 mixes the coal before it enters the material frame 2. Simultaneously, the iron remover 12 removes iron from the coal as it enters the material frame 2. The mixed coal then enters the three-way distribution valve 4, where it is dispersed by the mixing rod 13 and falls into the coal drop pipe 6, eventually reaching the low-level conveyor belt 5. When a switch is needed, the cylinder controlling the three-way distribution valve 4 actuates, switching the position of the internal valve plate to change its passage, and the low-level conveyor belt 5 on the standby side starts. The mixing rod 13 on the corresponding side of the three-way distribution valve 4 starts. The original conveying side is idle for 10 minutes and then stopped to reduce the amount of coal inside, preventing coal from accumulating inside the coal drop pipe 6 and reaching the low-level conveyor belt 5 during maintenance.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-level coal conveying device, characterized in that: It includes a high-level platform, a material frame, a high-level conveyor belt, a three-way material distribution valve, a low-level conveyor belt, a coal drop pipe, tracks, guide rods, a top cover, wheels, and a cylinder; an iron separator; a mixing rod; and a motor. The surface of the high-level platform has a channel connecting to the area below the platform. A material frame is fixed to the outside of the channel on the high-level platform. A high-level conveyor belt is installed on each side of the material frame to transport coal within it. Tracks are fixed to the top of the material frame on both sides. Guide rods are fixed to the inside of the tracks on the material frame. A top cover slides on the guide rods. Wheels are installed on the top cover corresponding to the track positions. A cylinder is fixed to the outside of the end of the material frame corresponding to the direction of travel of the top cover. The telescopic end of the cylinder is connected to one side of the top cover. An iron separator is fixed to the middle of the top cover. A three-way material distribution valve is fixed in the corresponding channel of the high-level platform; the inlet of the three-way material distribution valve is connected to the bottom of the material frame; a mixing rod is rotatably installed at the two outlet positions of the three-way material distribution valve; the mixing rod is driven by a motor; the two outlets of the three-way material distribution valve are respectively connected to a coal drop pipe; a low-level conveyor belt is installed below the outlet of the coal drop pipe.

2. The high-level coal conveying device according to claim 1, characterized in that: A bracket is fixed below the track extending beyond the material frame; the top cover has a mounting hole for engaging the iron separator; the iron separator is engaged in the mounting hole, with its bottom exposed inside the material frame.

3. The high-level coal conveying device according to claim 2, characterized in that: The material frame has notches on both sides corresponding to the positions of the high-level conveyor belt, and the discharge end of the high-level conveyor belt overlaps in the notches.

4. The high-level coal conveying device according to claim 1, characterized in that: The discharge port of the coal chute is fixed in the middle of the positioning frame; the low-level conveyor belt is set inside the positioning frame; protective plates are provided on both sides of the discharge port on the inner side of the positioning frame; the spacing between the protective plates is less than the width of the low-level conveyor belt.

5. The high-level coal conveying device according to claim 4, characterized in that: The coal chute is equipped with an inspection door.

6. The high-level coal conveying device according to claim 3, characterized in that: The bottom of the material frame is connected to the three-way material distribution valve via a slope transition.

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