Vertical granular raw material feeding device

Abstract

The utility model discloses a vertical granular raw material feeding device, which belongs to the technical field of solid material conveying and comprises a stock bin and a hopper which are integrally connected, the stock bin comprises an upper material storage chamber and a lower material supply chamber, the hopper comprises an upper material storage section and a lower material discharge section, the material storage section is fixedly connected with the side wall of the material supply chamber, and the material discharge section is fixedly connected with the side wall of the material supply chamber. A feeding opening is formed in the joint; a speed adjusting structure used for adjusting and controlling the discharging speed of raw materials is arranged in the hopper, a discharging pipe is vertically arranged at the bottom of the discharging section, the lower end of the discharging pipe is connected with a feeding pipe of the brimstone furnace, an air inlet is formed in one end of the feeding pipe, and the other end of the feeding pipe is connected with the brimstone furnace. Compared with a traditional feeding device, the feeding device has the advantages of being uniform in discharging, low in equipment energy consumption, simple in structure, low in manufacturing cost, easy to overhaul and the like.

Description

Technical Field

[0001] This utility model belongs to the field of solid raw material conveying technology, and in particular relates to a vertical granular raw material feeding device. Background Technology

[0002] In the air-blowing acid absorption process for bromine production, sulfur dioxide is currently the most commonly used absorbent. Most domestic bromine production plants are equipped with sulfur dioxide generating units. The production method uses sulfur and air as raw materials. Industrial sulfur is available in block, granular, flake, powder, and molten liquid forms. In a sulfur combustion furnace, the sulfur reacts with oxygen in the air to produce a sulfur dioxide-air mixture, which, after cooling, is directly supplied to the bromine absorption process.

[0003] Based on the form of sulfur combustion, it is divided into the sulfur fixation method and the sulfur melting method. The sulfur fixation method uses granular sulfur as raw material, which is quantitatively fed into the sulfur combustion furnace by an auger while air is blown in for combustion. The traditional sulfur fixation feeding process is as follows: Figure 1 As shown, granular sulfur in the sulfur silo falls into the horizontal auger through the feed inlet at the bottom of the silo. The auger rotates and agitates, generating a forward thrust that pushes the sulfur raw material to the auger feed inlet, and then it falls into the sulfur combustion furnace. The forward speed of the sulfur raw material is adjusted by controlling the rotation speed of the auger, thereby adjusting the feed speed of the sulfur combustion furnace. This feeding method has strict requirements on the particle size of the raw materials. The sulfur must be in uniform spherical or hemispherical granules. However, during the feeding process, the sulfur particles are easily broken and generate a large amount of sulfur powder due to the agitation of the auger and the friction of the auger shell. The sulfur powder is affected by the pressure fluctuation at the feed inlet of the sulfur furnace, and some of the powder accumulates inside the auger device. This not only increases the discharge resistance of the sulfur raw material and increases the energy consumption of the equipment, but also easily causes uneven discharge from the auger. At the same time, it increases the friction between the raw material, the auger spiral blades and the auger shell, resulting in severe wear and frequent maintenance. In addition, some of the powder raw material accumulated inside the auger device escapes from the shaft seals at both ends of the auger spiral shaft, causing environmental pollution and safety hazards. Utility Model Content

[0004] The purpose of this utility model is to provide a vertical granular raw material feeding device to solve the technical problems of uneven discharge, high energy consumption, severe equipment wear and raw material leakage.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A vertical granular raw material feeding device includes an integrally connected silo and a hopper. The silo includes an upper storage chamber and a lower feeding chamber. The hopper includes an upper storage section and a lower discharge section. The storage section is fixedly connected to the side wall of the feeding chamber, and a feeding port is provided at the connection. A discharge pipe is vertically provided at the bottom of the discharge section. The lower end of the discharge pipe is connected to the feed pipe of a sulfur combustion furnace. One end of the feed pipe is provided with an air inlet, and the other end is connected to the sulfur combustion furnace.

[0007] Furthermore, the hopper is provided with a speed regulating structure for controlling the discharge speed of raw materials. Preferably, the speed regulating structure includes a reducer and a rotating shaft. The upper end of the rotating shaft is connected to the reducer, and the lower end extends downward into the discharge pipe. Its surface is provided with auger spiral blades.

[0008] Furthermore, a stirring paddle is horizontally mounted on the upper part of the rotating shaft.

[0009] Furthermore, a filter grid is horizontally installed in the material storage chamber of the silo.

[0010] Furthermore, the feed port is provided with a discharge baffle, which is an openable and closable sliding structure used to open and close the feed port or to regulate the feeding speed of the raw materials.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model discloses a vertical granular raw material feeding device. The granular raw material is fed into the sulfur furnace feed pipe by gravity, allowing it to fall into the furnace itself. Compared to traditional feeding devices that use a screw conveyor to push the material, this method results in less friction between the sulfur particles and the screw conveyor and the casing, shorter contact time, less powder generation, reduced energy consumption, reduced wear, extended service life, and stable production. Furthermore, this vertical granular raw material feeding device eliminates the need for shaft seals at both ends of the screw conveyor shaft, simplifying the device structure, reducing manufacturing costs, eliminating leaks, and solving the problem of sulfur powder escape. Due to its simple structure, when maintenance is required, only the feed inlet of the hopper needs to be closed, the material in the hopper emptied, and the speed control structure disassembled and removed for maintenance, reducing maintenance difficulty and improving efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the original sulfur fixation feeding device;

[0014] Figure 2 This is a schematic diagram of the structure of one embodiment of the present utility model;

[0015] Figure 3 for Figure 2 A magnified view of area A in the middle. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, the following detailed description of a vertical granular raw material feeding device of this utility model is provided in conjunction with the accompanying drawings.

[0017] like Figures 2 to 3 As shown, this is a specific embodiment of the present invention. The vertical granular raw material feeding device includes an integrally connected hopper 1 and a feed hopper 2. The hopper includes an upper storage chamber and a lower feeding chamber. The feed hopper includes an upper storage section and a lower discharge section. The storage section is fixedly connected to the side wall of the feeding chamber. In some embodiments, the storage section is square or prismatic to facilitate connection with the side wall of the feeding chamber. The position where the side wall of the feeding chamber of the hopper connects to the storage section of the feed hopper forms a feeding port 3, such as... Figure 2 As shown, the material level in the silo 1 is higher than the material level in the hopper 2. The sulfur raw material can flow into the hopper 2 by gravity through the feeding port 3 on the side wall of the feeding chamber. In some embodiments, the bottom wall of the feeding chamber is inclined to prevent material from accumulating at the bottom of the feeding chamber. In some preferred embodiments, the angle between the bottom wall of the feeding chamber and the horizontal plane is 45~60°.

[0018] The discharge section of the hopper 2 is preferably inverted cone-shaped, with a vertical discharge pipe 4 at the bottom of the cone. The bottom end of the discharge pipe 4 is fixedly connected to the horizontally arranged feed pipe 5 of the sulfur combustion furnace. One end of the feed pipe 5 is the feed end, which is connected to the sulfur combustion furnace; the other end is the air inlet end, which is provided with an air inlet 6 to provide oxygen for sulfur combustion. When sulfur is burning, the sulfur raw material falls into the feed pipe 5 of the sulfur combustion furnace through the discharge pipe 4 of the hopper. The blower blows the combustion-supporting gas into the feed pipe 5 through the air inlet 6. The combustion-supporting gas carries the sulfur raw material falling into the feed pipe 5 into the sulfur combustion furnace to facilitate sulfur combustion.

[0019] In some embodiments, the hopper 2 is provided with a speed regulating structure for controlling the discharge speed of raw materials. The speed regulating structure includes a reducer 7 and a rotating shaft 8. A support 9 is horizontally fixed on the upper part of the material storage section of the hopper 2. The reducer 7 is fixed on the support 9. The upper end of the rotating shaft 8 is connected to the reducer, and the lower end surface is provided with auger spiral blades and extends downward into the discharge pipe 4. According to actual needs, the reducer controls the rotation of the auger at the lower end of the rotating shaft 8 to regulate the discharge speed of raw materials.

[0020] In some embodiments, the upper part of the rotating shaft 8 is also provided with a stirring paddle 10. The stirring paddle 10 is located in the storage section of the hopper 2 and rotates horizontally to make the sulfur particles in the storage section evenly distributed and at a consistent height, forming a good seal to prevent the combustion-supporting gas from entering the hopper 2 from the discharge pipe 4 and affecting the discharge of the hopper.

[0021] In some embodiments, the storage chamber of the silo 1 is provided with a filter grid 11 to prevent large debris from entering the discharge device and causing the equipment to stop, thus ensuring that the sulfur raw material has a uniform particle size.

[0022] In some embodiments, the feed port 3 is provided with a discharge baffle 12, which is an openable and closable sliding structure used to open and close the feed port 3 or to regulate the feeding speed of the raw materials.

[0023] In some embodiments, the inlet end of the sulfur combustion furnace feed pipe 5 is provided with an observation window, through which the feeding situation of the sulfur combustion furnace can be observed.

[0024] In summary, when using the vertical granular raw material feeding device of this utility model, the raw material is first transported into the silo 1. The raw material in the silo 1 flows into the hopper 2 by gravity through the feed port 3. When the material level in the silo 1 reaches the set value, the auger is turned on to discharge the material. The stirring paddle rotates to ensure that the material is evenly distributed in the hopper 2. The discharge speed is controlled by adjusting the auger speed. During use, the auger speed can also be adjusted according to production needs. The raw material falls from the discharge pipe 4 into the sulfur combustion furnace feed pipe 5 and enters the sulfur combustion furnace together with the combustion-supporting gas.

[0025] This utility model discloses a vertical granular raw material feeding device. The granular raw material is fed into the sulfur furnace feed pipe by gravity, allowing it to fall into the furnace itself. Compared to traditional feeding devices that use a screw conveyor to push the material in, the sulfur particles experience less friction with the screw conveyor and the casing during feeding, resulting in shorter contact time and less powder formation. This reduces energy consumption, wear, and lifespan, and stabilizes production. Furthermore, this vertical granular raw material feeding device eliminates the need for shaft seals at both ends of the screw conveyor shaft, simplifying the device structure, reducing manufacturing costs, eliminating leaks, and solving the problem of sulfur powder escape. Due to its simple structure, when maintenance is required, only the feed port of hopper 1 needs to be closed, the material in hopper 2 emptied, and the speed control structure disassembled and removed for maintenance, reducing maintenance difficulty and improving efficiency.

[0026] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes and equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A vertical granular raw material feeding device, characterized in that, It includes an integrally connected silo (1) and hopper (2). The silo (1) includes an upper storage chamber and a lower feeding chamber. The hopper (2) includes an upper storage section and a lower discharge section. The storage section is fixedly connected to the side wall of the feeding chamber and a feeding port (3) is provided at the connection. The bottom of the discharge section is vertically provided with a discharge pipe (4). The lower end of the discharge pipe (4) is connected to the feed pipe (5) of the sulfur combustion furnace. One end of the feed pipe (5) is provided with an air inlet (6) and the other end is connected to the sulfur combustion furnace.

2. The vertical granular raw material feeding device according to claim 1, characterized in that, The hopper (2) is equipped with a speed regulating structure for controlling the discharge speed of raw materials.

3. The vertical granular raw material feeding device according to claim 2, characterized in that, The speed regulating structure includes a speed reducer (7) and a rotating shaft (8). The upper end of the rotating shaft (8) is connected to the speed reducer (7), and the lower end extends downward into the discharge pipe (4), and auger spiral blades are provided on its surface.

4. The vertical granular raw material feeding device according to claim 3, characterized in that, The upper part of the rotating shaft (8) is equipped with a stirring paddle (10).

5. The vertical granular raw material feeding device according to claim 4, characterized in that, The material storage chamber of the silo (1) is equipped with a horizontal filter grid (11).

6. The vertical granular raw material feeding device according to claim 1, characterized in that, The feed port (3) is provided with a discharge baffle (12), which is an openable and closable sliding structure.

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