Device for purging and cleaning the discharge of a roaster and method of use thereof

Abstract

The application discloses a device for roasting furnace throwing material port blowing and cleaning and a use method thereof, which comprises a throwing material port in a trapezoidal structure, a square tube is arranged at the bottom of the lower bottom surface of the trapezoidal structure, a plurality of radial air vents are formed in the square tube along the length direction of the square tube, an air supply channel is formed in the lower bottom surface of the trapezoidal structure and communicated with the radial air vents, the air supply channel is communicated with the internal space of the trapezoidal structure, a lower wind baffle is arranged on the side, away from the roasting furnace, of the air supply channel and fixed to the lower bottom surface of the trapezoidal structure, a strip-shaped cavity is hingedly arranged on the inner side of the two waists of the trapezoidal structure, and a gas bag is arranged on the free end of the strip-shaped cavity and protrudes towards the center of the trapezoidal structure. The device has the beneficial effect that part of the compressed air blows the materials accumulated between the lower bottom surface of the trapezoidal structure and the outlet of the material throwing machine, and part of the compressed air enters the two sides of the throwing material port through the gaps between the gas bags and blows the materials possibly accumulated on the two sides.

Description

TECHNICAL FIELD

[0001] The present application relates to the pyroprocessing of pyrite ore for sulfuric acid production, and more particularly to a device for blowing and cleaning the discharge opening of a pyroprocessing furnace and a method of using the same. BACKGROUND

[0002] In a pyroprocessing system for pyrite ore, a high-speed discharge machine is used to throw the pyrite ore into the discharge opening of a pyroprocessing furnace, as shown in Fig. 1. SO2 gas is obtained by high-temperature pyroprocessing in the furnace and used to produce sulfuric acid. During the process of throwing the material, a small amount of material will scatter onto the discharge opening of the pyroprocessing furnace due to its own gravity, and continuously accumulate over time. When the accumulation reaches a certain level, it will hinder the throwing of the material. The hindered material will fall onto the platform through the gap between the outlet of the discharge machine and the discharge opening after impact, and needs to be manually recovered, which not only increases the difficulty of environmental protection and 5S management, but also greatly increases the labor cost. There is currently no good solution to the problem of material accumulation in the discharge opening. Figure 1

[0003] For example, Chinese Utility Model Patent Publication No. CN216432482U discloses a large-scale fluidized pyroprocessing furnace discharge opening air seal device, which includes an upper air box, a lower air box, a left air box, and a right air box arranged around the rectangular discharge opening. The four air boxes are connected to form a whole, and each air box is connected to a fan or compressed air to blow air into the rectangular discharge opening. Different direction combination air seals are formed at the rectangular discharge opening to form a local positive pressure to avoid gas leakage from the furnace. The air seal device can only be used to prevent gas leakage, but cannot prevent material accumulation in the discharge opening. SUMMARY

[0004] The technical problem to be solved by the present application is the accumulation and falling of material in the discharge opening of the existing pyroprocessing furnace. To this end, a device for blowing and cleaning the discharge opening of a pyroprocessing furnace and a method of using the same are provided.

[0005] The technical solution of the present application is a device for blowing and cleaning the discharge opening of a pyroprocessing furnace, which comprises a discharge opening in a trapezoidal structure. A square tube is installed at the bottom of the lower base of the trapezoidal structure. A plurality of radial air vents are formed in the square tube along its length direction. A blow channel is formed in the lower base of the trapezoidal structure and communicates with the radial air vents. The blow channel communicates with the internal space of the trapezoidal structure. A lower air baffle is fixed to the lower base of the trapezoidal structure on the side away from the pyroprocessing furnace. A strip-shaped cavity is hinged to the inner side of the two waists of the trapezoidal structure. A gas bag protrudes towards the center of the trapezoidal structure at the free end of the strip-shaped cavity. The plane of the strip-shaped cavity is located on the inner side of the blow channel. ​

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

[0007] In the above scheme, the air bags are several air bags distributed at intervals at the free end of the strip-shaped cavity.

[0008] The further improvement of the above scheme is that the inner side of the upper base of the trapezoidal structure is provided with an upper wind deflector, and the upper wind deflector is opposite to the lower wind deflector at intervals.

[0009] In the above scheme, the two ends of the square tube are connected with the air source, and the strip-shaped cavity is communicated with the air source.

[0010] In the above scheme, the throwing port is in a trapezoidal structure with a gradually decreasing inner diameter in the direction away from the roaster.

[0011] In the above scheme, the lower base of the trapezoidal structure is in a slope.

[0012] The use method of the device for blowing and cleaning the throwing port of the roaster comprises the following steps: the outlet of the throwing machine is inserted into the throwing port, the two sides of the outlet of the throwing machine are in contact with the air bags and drive the strip-shaped cavity to rotate inward until the outlet of the throwing port is in place, at this time, the lower wind deflector is tightly attached to the bottom of the outlet of the throwing machine, the throwing machine is started to start throwing, compressed air is introduced into the two ends of the square tube through the air source, and compressed air is introduced into the strip-shaped cavity, the air bags are inflated to form clamping on the two sides of the outlet of the throwing machine, the compressed air is limited by the lower wind deflector and the outlet of the throwing machine, and flows to the roaster, part of the compressed air blows away the materials accumulated in the gap between the lower base of the trapezoidal structure and the outlet of the throwing machine, and part of the compressed air enters the roaster through the gap between the two sides of the throwing port.

[0013] The beneficial effects of the present application are that through the design of the square tube and the radial air vent, the compressed air is guided into the inside of the trapezoidal structure, and then through the guidance of the lower wind deflector and the outlet of the throwing machine, part of the compressed air blows away the materials accumulated between the lower base of the trapezoidal structure and the outlet of the throwing machine, and part of the compressed air enters the two sides of the throwing port through the gap between the air bags to blow away the materials that may be accumulated on the two sides. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a schematic diagram of the cooperation of the existing throwing machine and the throwing port of the roaster;

[0015] Figure 2 is a schematic diagram of the throwing port of the present application;

[0016] Figure 3 is a front view of the throwing port of the present application;

[0017] Figure 4is a front view of a schematic diagram of a preferred embodiment of the present application;

[0018] In the figure, 1 is a throwing port, 2 is a square tube, 3 is a air supply channel, 4 is a lower air baffle, 5 is a strip-shaped cavity, 6 is an air bag, 7 is a limiting plate, 8 is an upper air baffle, and 9 is an outlet of the throwing machine. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments made by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0020] The pyrite material is a granular solid material, although the outlet 9 of the throwing machine extends into the throwing port of the roaster, but part of the material will be accumulated between the outlet of the throwing machine and the throwing port during the throwing process, causing the subsequent material to fall outside the throwing port. In order to solve this problem, the present application designs a device for blowing and cleaning the throwing port of the roaster, as shown in Figures 2-3 The device for blowing and cleaning the throwing port of the roaster includes a throwing port 1, the throwing port is in a trapezoidal structure, a square tube 2 is installed at the bottom of the lower base of the trapezoidal structure, a plurality of radial air vents are formed on the square tube along the length direction of the square tube, an air supply channel 3 is formed in the lower base of the trapezoidal structure and communicates with the radial air vents, the air supply channel communicates with the internal space of the trapezoidal structure, a lower air baffle 4 is arranged on the side of the air supply channel away from the roaster and is fixedly connected with the lower base of the trapezoidal structure, a strip-shaped cavity 5 is hingedly connected to the inner side of the two waists of the trapezoidal structure, an air bag 6 protruding towards the center of the trapezoidal structure is arranged at the free end of the strip-shaped cavity, and the plane where the strip-shaped cavity is located is on the inner side of the air supply channel.

[0021] As a preferred embodiment of the present application, the strip-shaped cavity is provided with a limiting plate 7 fixedly connected with the waist of the trapezoidal structure on the side close to the roaster, when the outlet of the throwing machine extends into the throwing port, the strip-shaped cavity is driven to rotate inwardly by a certain angle, when the strip-shaped cavity contacts with the limiting plate, the rotation is stopped, indicating that the throwing machine has been extended in place and the throwing work can be performed.

[0022] The airbags can be several airbags spaced apart at the free ends of the strip-shaped cavity, with gaps between adjacent airbags to allow compressed air to pass through. This creates an airflow space towards the roasting furnace within the space enclosed by the outlet of the ejector, the ejection port, the lower baffle, and the strip-shaped cavity. This guides the material more smoothly into the roasting furnace and prevents material from accumulating at the bottom and side walls of the ejection port. The strip-shaped cavity has an opening for the input of compressed air from an air source. The compressed air inflates the airbags, forming a reliable, flexible clamp on the outlet of the ejector, ensuring the stability of the ejection. Furthermore, the inflation degree of the airbags can be adjusted according to the size of the ejector's outlet, achieving adaptability to different sizes of ejector outlets.

[0023] To further improve the purging effect, such as Figure 4 As shown, an upper baffle plate 8 can be provided on the inner side of the upper bottom surface of the trapezoidal structure. The upper baffle plate and the lower baffle plate are spaced apart and face each other, forming a relatively sealed space with the strip cavities and airbags on the left and right sides, so that the compressed air can flow into the roasting furnace as much as possible.

[0024] The square tube is connected to a gas source at both ends, and the strip cavity is connected to the gas source. The gas source at both ends of the square tube and the gas source connected to the strip cavity can be a single gas source or two relatively independent gas sources. The gas source can be a fan or other gas generating device.

[0025] To reduce material accumulation, the discharge port has a trapezoidal structure with its inner diameter gradually decreasing in the direction away from the roasting furnace. Under normal circumstances, the material accumulated at the bottom of the discharge port will slide down into the roasting furnace.

[0026] The method of using the device for blowing and cleaning the discharge port of a roasting furnace includes the following steps: The outlet of the discharger is inserted into the discharge port. The two sides of the discharger's outlet contact the air bladders and drive the strip-shaped cavity to rotate inward until the discharge port is in place. At this time, the lower baffle plate is tightly fitted with the bottom of the discharger's outlet, and the upper baffle plate is tightly fitted with the top of the discharger's outlet. The discharger is started to discharge material. Compressed air is introduced through the air source to both ends of the square pipe, and simultaneously, compressed air is introduced into the strip-shaped cavity. The air bladders inflate, clamping the two sides of the discharger's outlet. The compressed air is restricted by the lower baffle plate and the discharger's outlet, flowing towards the roasting furnace. Part of the compressed air blows away the material accumulated in the gap between the discharger's outlet and the bottom surface of the trapezoidal structure, while part of the compressed air enters the roasting furnace through the gaps between the air bladders and the two sides of the discharge port.

Claims

1. A device for purging the discharge port of a roaster, comprising: The utility model provides a throw material mouth (1), its characterized in be: throw material mouth presents trapezoidal structure, the trapezoidal structure's lower bottom face bottom installs square tube (2), a plurality of radial air vents are seted up on the square tube along its length direction, the trapezoidal structure's lower bottom face sets up the air supply channel (3) of communication with radial air vent, the air supply channel is communicated with the internal space of trapezoidal structure, the air supply channel is equipped with with the lower wind baffle (4) of trapezoidal structure's lower bottom face fixed connection away from the one side of roaster, the two waist inboard of trapezoidal structure is hinged with strip cavity (5), the free end of strip cavity is equipped with the air bag (6) that protrudes to the center of trapezoidal structure, the plane where strip cavity is located is located the inboard of air supply channel.

2. The device for purging the discharge port of a roaster according to claim 1, characterized in that: The side close to the roaster of the strip cavity is equipped with the limiting plate (7) of the waist fixed connection of trapezoidal structure.

3. The device for purging the discharge port of a roaster according to claim 1, characterized in that: The air bag is a plurality of air bags that are spaced apart at the free end of the strip cavity.

4. The device for purging the discharge port of a roaster according to claim 1, characterized in that: The upper wind baffle (8) is equipped in the inboard of the upper bottom face of trapezoidal structure, and the upper wind baffle is spaced apart with the lower wind baffle.

5. The device for purging the discharge port of a roaster according to claim 1, characterized in that: The both ends of the square tube are connected with the gas source, and the strip cavity is communicated with the gas source.

6. The device for purging the discharge port of a roaster according to claim 1, characterized in that: The throw material mouth presents the trapezoidal structure that the inner diameter gradually reduces along the direction away from the roaster.

7. The device for purging the discharge port of a roaster according to claim 6, characterized in that: The lower bottom face of the trapezoidal structure presents the inclined plane.

8. The method of using the apparatus for purging the discharge opening of a roaster according to any one of claims 1 to 7, characterized in that: The utility model discloses a throw material mouth, including the following steps: The outlet of the throw material machine is stretched into the throw material mouth, and the both sides of the outlet of the throw material machine contact with the air bag and drive the strip cavity to rotate inwards until the outlet of the throw material mouth is in place, at this time, the lower wind baffle is tightly attached to the bottom of the outlet of the throw material machine, the throw material machine is started to start throwing material, compressed air is input into the both ends of the square tube through the gas source, and the strip cavity is communicated with the gas source, the air bag is inflated to form clamping on both sides of the outlet of the throw material machine, the compressed air is limited by the lower wind baffle and the outlet of the throw material machine and flows to the direction of the roaster, part of the compressed air blows off the material accumulated in the gap between the lower bottom face of the trapezoidal structure and the outlet of the throw material machine, and part of the compressed air enters the roaster through the both sides of the throw material mouth through the gap between the air bags.

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