Furnace mouth material spilling prevention device and method of use thereof

Abstract

The application discloses a furnace mouth material scattering prevention device and a use method thereof, which comprises a feeding port, the longitudinal section of the feeding port is in a trapezoidal shape, two torsional springs extending in the height direction are fixedly connected to the two sides of the feeding port, a left baffle and a right baffle extending in the direction of a material throwing port of a material throwing machine are respectively connected to the two torsional springs, a bottom plate extending in the direction of the material throwing port of the material throwing machine is fixedly connected to the bottom of the feeding port, the left baffle and the right baffle are in sliding fit on the bottom plate, a side baffle with a height lower than the left baffle and the right baffle is fixedly connected to the free end of the bottom plate, a guide plate above the bottom plate is hingedly connected to the bottom of the feeding port, the free end of the guide plate is in clearance fit with the side baffle, and a compression spring is fixedly connected between the bottom of the guide plate and the bottom plate. The application has the beneficial effect that large-particle materials can smoothly fall into the feeding port along the guide plate, the guide plate is continuously vibrated under the cooperation of the compression spring after being impacted by the large-particle materials, and the sliding of the large-particle materials is accelerated.

Description

Furnace opening anti-spillage device and its usage method Technical Field

[0001] This invention relates to the treatment of the discharge port of a roasting furnace in the pyrite-to-acid industry, and particularly to a furnace mouth anti-spillage device and its usage method. Background Technology

[0002] In pyrite-to-sulfuric acid systems, a high-speed throwing machine is typically used to scatter pyrite ore into the sump of the roasting furnace, as shown in Figure 1. Currently, the gap between the sump and the furnace opening is relatively large, leading to frequent spillage. In one system, all spilled material is piled up on a 2-meter-high conveyor belt, making it impossible for personnel to clean, resulting in severe material accumulation. Through communication with relevant technical and operational personnel, and after on-site investigation, it was found that most of the spilled material was large-particle powder. The preliminary analysis suggests that the spillage is due to insufficient throwing capacity of the throwing machine; that is, the initial velocity provided by the throwing machine is insufficient to overcome the gravitational pull of the large particles, causing them to be pulled down by their own weight before entering the furnace, resulting in spillage.

[0003] To solve this problem, the discharge port is enclosed with steel plates, and a compressed air pipe is installed at the bottom inside the enclosure to blow away the accumulated material. However, this fixes the way the discharger and the roasting furnace work together. If it is necessary to adjust the relationship between the discharger and the roasting furnace, such as replacing the discharger or the roasting furnace, the steel plate enclosure needs to be removed. Both installation and dismantling are time-consuming, labor-intensive, and uneconomical. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that large particles of material are easily spilled from the feed inlet of the existing roasting furnace due to the gap between the feed inlet and the discharge outlet of the discharge machine. To this end, a furnace mouth anti-spillage device and its usage method are provided to prevent large particles of material from spilling.

[0005] The technical solution of the present invention is: a furnace mouth anti-spillage device, comprising: a feed inlet, the longitudinal section of which is trapezoidal; two torsion springs extending along the height direction are fixedly connected to both sides of the feed inlet; a left baffle and a right baffle extending toward the discharge port of the discharge machine are respectively connected to the two torsion springs; a base plate extending toward the discharge port of the discharge machine is fixedly connected to the bottom of the feed inlet; the left baffle and the right baffle slide on the base plate; a side baffle with a height lower than the left baffle and the right baffle is fixedly connected to the center of the free end of the base plate; a guide plate located above the base plate is hinged to the bottom of the feed inlet; the free end of the guide plate is clearance-fitted with the side baffle; and a compression spring is fixedly connected between the bottom of the guide plate and the base plate.

[0006] The improvement to the above scheme is that the strip cavity is provided with a limiting plate that is fixed to the waist of the trapezoidal structure on the side near the roasting furnace.

[0007] The improvement to the above solution is that a flexible cloth is connected between the left baffle and the side baffle, and between the right baffle and the side baffle.

[0008] A further improvement to the above solution is that the bottom plate is provided with limiting blocks on both sides to prevent the left baffle and the right baffle from rotating outward.

[0009] A further improvement to the above solution is that a vent is provided in the center of the base plate, and the vent is connected to an air source.

[0010] Another improvement to the above solution is that the edges of the guide plate, excluding the free end, are sealed to the base plate using a flexible material.

[0011] The base plate described in the above scheme is fan-shaped.

[0012] Another improvement to the above scheme is that a guide plate extending towards the feed inlet is fixedly connected to the upper part of the side baffle.

[0013] The method of using the furnace mouth anti-spillage device includes the following steps: Align the feed inlet and the discharge port of the discharge machine, adjust the angle between the left and right baffles according to the size of the discharge port so that the left and right baffles clamp the discharge port from both sides, and the side baffles are located below the discharge port. After the discharge begins, large particles fall onto the guide plate, slide down from the highest end of the guide plate to the lowest end and enter the discharge port. The guide plate is impacted by the large particles, and the compression spring repeatedly deforms, causing the guide plate to swing up and down periodically, which promotes the large particles to enter the discharge port quickly.

[0014] The beneficial effect of this invention is that the left and right baffles can rotate, which can clamp the discharge ports of different diameters. The side baffles prevent large particles from falling from the edge of the floor. The guide plates are tilted due to the support of the compression springs, and the lowest end is close to the feed port, so that large particles fall smoothly into the feed port along the guide plates. The guide plates are continuously vibrated by the impact of the large particles and the compression springs, which accelerates the sliding of the large particles. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the existing throwing machine and the throwing port of the roasting furnace;

[0016] Figure 2 is a schematic diagram of the furnace mouth anti-spillage device of the present invention after the guide plate is removed;

[0017] Figure 3 is a schematic diagram of the cooperation between the left baffle, right baffle, side baffle and guide plate in Figure 2;

[0018] Figure 4 is a schematic diagram of the cooperation between the base plate, compression spring and guide plate in Figure 2;

[0019] In the diagram, 1 is the feed inlet, 2 is the torsion spring, 3 is the left baffle, 4 is the right baffle, 5 is the bottom plate, 6 is the side baffle, 7 is the guide plate, 8 is the compression spring, 9 is the flexible cloth, 10 is the limiting block, 11 is the vent, 12 is the diversion plate, and 13 is the discharge port. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments implemented by those skilled in the art without creative effort are within the protection scope of the present invention.

[0021] Pyrite is a granular solid material. Although the discharge port of a pulverizer can be inserted into the feed inlet of a roasting furnace, the high temperature environment inside the furnace will damage the discharge port. Therefore, a certain gap is usually maintained between the discharge port and the feed inlet during use. Large particles will fall within this gap. Even without considering the issue of damage to the discharge port under high temperature conditions, inserting the discharge port into the feed inlet will still result in some large particles accumulating at the inlet opening.

[0022] As shown in Figures 1-4, the furnace opening anti-spillage device includes: a feed inlet 1, the longitudinal section of which is trapezoidal; two torsion springs 2 extending along the height direction are fixed to both sides of the feed inlet; a left baffle 3 and a right baffle 4 extending toward the discharge port 13 of the discharge machine are respectively connected to the two torsion springs; after the left and right baffles rotate outward around the torsion springs, they are driven back to their initial positions by the torsion springs; the opening angle of the left and right baffles determines the size of the discharge port that can be clamped; when the discharge port is larger than the angle between the left and right baffles in the initial state, it can be adaptively adjusted; a bottom plate 5 extending toward the discharge port of the discharge machine is fixed to the bottom of the feed inlet; the bottom plate is fan-shaped, rectangular, or other possible shapes. The left and right baffles slide on the base plate. A side baffle 6, which is lower than the left and right baffles, is fixedly connected to the center of the free end of the base plate. A guide plate 7, which is located above the base plate, is hinged to the bottom of the feed inlet. The free end of the guide plate is in clearance fit with the side baffle. A compression spring 8 is fixed between the bottom of the guide plate and the base plate. The compression spring can be one spring located at the center of the bottom of the guide plate, or it can be two, three, or even more springs.

[0023] To prevent large particles from protruding between the left and side baffles or between the right and side baffles, a preferred embodiment of the present invention provides a flexible fabric 9 connecting the left and side baffles, and the right and side baffles. The flexible fabric extends as the left and right baffles rotate outwards.

[0024] In order to limit the outward rotation of the left and right baffles, the bottom plate is provided with limiting blocks 10 on both sides to prevent the left and right baffles from rotating outward. The limiting blocks are preferably detachable, such as threaded connections.

[0025] In a preferred embodiment of the present invention, a vent 11 is provided in the center of the base plate, which is connected to an air source. By inflating the space between the base plate and the guide plate through an external air source, the tilt angle of the guide plate can be adjusted and kept stable. In this preferred embodiment, the edges of the guide plate, excluding the free end, are sealed to the base plate with a flexible material to prevent excessive gas leakage.

[0026] As a preferred embodiment of the present invention, the upper part of the side baffle is fixedly connected to a guide plate 12 extending towards the feed inlet. The airflow flows out from between the free end of the guide plate and the side baffle, and changes direction after encountering the guide plate, flowing towards the feed inlet and driving large particles of material into the feed inlet.

[0027] The method of using the furnace mouth anti-spillage device includes the following steps: Align the feed inlet and the discharge port of the discharge machine, adjust the angle between the left and right baffles according to the size of the discharge port so that the left and right baffles clamp the discharge port from both sides, and the side baffles are located below the discharge port. After the discharge begins, large particles fall onto the guide plate, slide down from the highest end of the guide plate to the lowest end and enter the discharge port. The guide plate is impacted by the large particles, and the compression spring repeatedly deforms, causing the guide plate to swing up and down periodically, which promotes the large particles to enter the discharge port quickly.

Claims

1. A furnace opening anti-spillage device, including: The feed inlet (1) is characterized in that: the longitudinal section of the feed inlet is trapezoidal; two torsion springs (2) extending along the height direction are fixedly connected to both sides of the feed inlet; a left baffle (3) and a right baffle (4) extending toward the discharge port of the discharge machine are respectively connected to the two torsion springs; a bottom plate (5) extending toward the discharge port of the discharge machine is fixedly connected to the bottom of the feed inlet; the left baffle and the right baffle slide on the bottom plate; a side baffle (6) with a height lower than the left baffle and the right baffle is fixedly connected to the center of the free end of the bottom plate; a guide plate (7) located above the bottom plate is hinged to the bottom of the feed inlet; the free end of the guide plate is clearance-fitted with the side baffle; and a compression spring (8) is fixed between the bottom of the guide plate and the bottom plate. ); Flexible cloth (9) is connected between the left baffle and the side baffle, and between the right baffle and the side baffle; The bottom plate is fan-shaped; The method of using the furnace mouth anti-spillage device includes the following steps: Align the feed port and the discharge port of the discharge machine, adjust the angle between the left baffle and the right baffle according to the size of the discharge port, so that the left baffle and the right baffle clamp the discharge port from both sides of the discharge port, and the side baffle is located below the discharge port. After the discharge begins, large particles fall onto the guide plate, slide down from the highest end of the guide plate to the lowest end and enter the discharge port. The guide plate is impacted by the large particles, and the compression spring repeatedly deforms, causing the guide plate to swing up and down periodically, which prompts the large particles to quickly enter the discharge port.

2. The furnace opening anti-spillage device as described in claim 1, characterized in that: The bottom plate is provided with limiting blocks (10) on both sides to prevent the left baffle and the right baffle from rotating outward.

3. The furnace opening anti-spillage device as described in claim 1, characterized in that: A vent (11) is provided in the center of the base plate, and the vent is connected to an air source.

4. The furnace opening anti-spillage device as described in claim 3, characterized in that: The guide plate, except for its free end, is sealed to the base plate by a flexible material.

5. The furnace opening anti-spillage device as described in claim 1, characterized in that: A guide plate (12) extending toward the feed inlet is fixedly connected to the upper part of the side baffle.

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