Device for double-line conveying remote switching control of yellow phosphorus furnace charge

Abstract

The utility model relates to a remote switching control device for double-line conveying of yellow phosphorus furnace burden, which comprises a closed distribution box arranged at the outlet end of a conveying belt conveyor in a non-contact manner, a first feed opening and a second feed opening are formed in the bottom of the closed distribution box, a rotating shaft is arranged on the inner wall of the closed distribution box, and the rotating shaft is rotatably connected with a movable turning plate. The size of the movable turning plate can seal the first discharging port or the second discharging port, the rotating shaft is connected with a stroke air cylinder through a connecting rod, an air inlet and an air outlet of the stroke air cylinder are connected with an electromagnetic valve through compressed air pipelines, and the electromagnetic valve is connected with an external compressed air source. The device has the advantages that the device can effectively solve the problem that yellow phosphorus production furnace burden cannot be normally supplied after a certain conveying line breaks down, meanwhile, occupational health and safety risks of gas poisoning and dust exist in a yellow phosphorus electric furnace, the device adopts remote switching control to replace manual turning plate rotating operation, the intrinsic safety level is improved, and the production cost is reduced. And the labor intensity of personnel is greatly reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production, and in particular relates to a device for remote switching control of double-line conveying of yellow phosphorus furnace charge. Background Art

[0002] Yellow phosphorus has a wide range of uses and is one of the most important chemical raw materials. Most yellow phosphorus production enterprises in my country use the electric furnace method to produce phosphorus. Phosphate ore, white coal, and silica are added into the electric furnace in a certain ratio. Silica is used as a flux, and white coal is used as a reducing agent and conductor. Electric energy is converted into heat energy to melt it and produce a chemical reduction reaction to generate yellow phosphorus furnace gas, which is a mixture of yellow phosphorus steam and coal gas. The yellow phosphorus is refined and rinsed to form a product.

[0003] The production of 1 ton of yellow phosphorus consumes about 8.7 tons of phosphate rock, 1.75 tons of silica and 1.5 tons of white coal. The yellow phosphorus electric furnace runs continuously for 24 hours and has a large demand for furnace materials. If there is a failure in the furnace material transportation link during the actual production process, it will directly affect the normal production of the electric furnace. In addition, the furnace materials must first be transported to the material cabinet on the fourth floor of the yellow phosphorus electric furnace plant, and then enter the electric furnace for reaction. The fourth floor of the electric furnace plant has occupational health and safety risks of gas poisoning and dust. The original manual rotation of the flap means that the personnel at the material delivery post need to go to the work site to rotate the flap, and they need to go back and forth from the first floor to the fourth floor of the plant at least twice a day, which not only increases safety risks, but also has high labor intensity. Summary of the invention

[0004] The utility model aims to provide a device for remote switching control of double-line conveying of yellow phosphorus furnace charge, which changes the original independent conveying mode of the two conveying lines of yellow phosphorus furnace charge into a double-line remote arbitrary switching conveying mode. The technical scheme is as follows: a closed material distribution box is arranged at the outlet end of the conveying belt conveyor in a non-contact manner, a first material discharge port and a second material discharge port are arranged at the bottom of the closed material distribution box, a rotating shaft is arranged on the inner wall of the closed material distribution box, the rotating shaft is rotatably connected with a movable flap, the movable flap closes the first material discharge port or the second material discharge port, the rotating shaft is connected with a stroke cylinder through a connecting rod, the air inlet and the air outlet of the stroke cylinder are connected with an electromagnetic valve through a compressed air pipeline, and the electromagnetic valve is connected with an external compressed air source.

[0005] The solenoid valve is controlled by a remote DCS system to achieve remote operation and control of the flipping of the movable flap.

[0006] The height difference between the feed port of the closed material distribution box and the movable flap is within 20 cm, so as to prevent the movable flap from being worn due to long-term impact of materials.

[0007] When the movable flap closes the first material discharge port, the included angle with the horizontal plane is 30° to 60°, and when the movable flap closes the second material discharge port, the included angle with the horizontal plane is 120° to 150°, ensuring that too much material will not accumulate on the movable flap.

[0008] Beneficial effects of the utility model:

[0009] The device can effectively solve the problem of normal supply of yellow phosphorus production materials due to a failure of a certain transmission line. At the same time, yellow phosphorus electric furnaces have occupational health and safety risks of gas poisoning and dust. The device uses remote switching control instead of manual rotation of the flap operation. Post personnel do not need to go to the work site, which improves the inherent safety level and greatly reduces the labor intensity of personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] In the figure: 1. Conveyor belt; 2. Sealed material distribution box; 3. First discharge port; 4. Second discharge port; 5. Movable flap; 6. Stroke cylinder; 7. Solenoid valve; 8. Compressed air pipeline; 9. Remote DCS system; 10. Rotating shaft; 11. Connecting rod. DETAILED DESCRIPTION

[0012] The utility model is further described in detail below based on the accompanying drawings and specific embodiments.

[0013] Example 1

[0014] A device for remote switching control of double-line conveying of yellow phosphorus furnace charge comprises a closed material distribution box 2 which is non-contactly arranged at the outlet end of a conveying belt conveyor 1, a first material discharge port 3 and a second material discharge port 4 are provided at the bottom of the closed material distribution box 2, a rotating shaft 10 is arranged on the inner wall of the closed material distribution box 2, the rotating shaft 10 is rotatably connected to a movable flap 5, the movable flap 5 closes the first material discharge port 3 or the second material discharge port 4, the rotating shaft 10 is connected to a stroke cylinder 6 through a connecting rod 11, the air inlet and the air outlet of the stroke cylinder 6 are connected to a solenoid valve 7 through a compressed air pipeline 8, and the solenoid valve 7 is connected to an external compressed air source.

[0015] The solenoid valve 7 is controlled by a remote DCS system 9 .

[0016] The height difference between the feed opening of the closed material distribution box 2 and the movable flap 5 is 15 cm.

[0017] When the movable flap 5 closes the first material discharge opening 3, the angle between the movable flap 5 and the horizontal plane is 45°, and when the movable flap 5 closes the second material discharge opening 4, the angle between the movable flap 5 and the horizontal plane is 135°.

[0018] Example 2

[0019] The device described in Example 1 is used, and its operation process is as follows: after the conveyor belt 1 delivers the furnace charge to the closed distribution box 2, the remote DCS system 9 controls the switch of the solenoid valve 7 to control the stroke cylinder 6 to drive the flipping of the movable flap 5, thereby realizing remote switching of the unloading direction.

Claims

1. A device for remote switching control of double-line conveying of yellow phosphorus furnace charge, characterized in that: The invention comprises a closed material distribution box (2) which is non-contactly arranged at the outlet end of a conveyor belt conveyor (1); a first material discharge port (3) and a second material discharge port (4) are provided at the bottom of the closed material distribution box (2); a rotating shaft (10) is arranged on the inner wall of the closed material distribution box (2); the rotating shaft (10) is rotatably connected to a movable flap (5); the movable flap (5) closes the first material discharge port (3) or the second material discharge port (4); the rotating shaft (10) is connected to a stroke cylinder (6) through a connecting rod (11); an air inlet and an air outlet of the stroke cylinder (6) are connected to an electromagnetic valve (7) through a compressed air pipeline (8); and the electromagnetic valve (7) is connected to an external compressed air source.

2. A device for remote switching control of double-line conveying of yellow phosphorus charge according to claim 1, characterized in that: The solenoid valve (7) is controlled by a remote DCS system (9).

3. A device for remote switching control of double-line conveying of yellow phosphorus furnace charge according to claim 1, characterized in that: The height difference between the feed opening of the sealed material distribution box (2) and the movable flap (5) is within 20 cm.

4. A device for remote switching control of double-line conveying of yellow phosphorus charge according to claim 1, characterized in that: When the movable flap (5) closes the first material discharge opening (3), the angle between it and the horizontal plane is 30° to 60°; when the movable flap (5) closes the second material discharge opening (4), the angle between it and the horizontal plane is 120° to 150°.

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