Safe and reliable screw conveyor

Abstract

The utility model belongs to the technical field of spiral conveyors, and particularly relates to a safe and reliable spiral conveyor which comprises a barrel and a driving motor, one end of the barrel is provided with a machine head, the other end of the barrel is provided with a machine tail, the machine head and the machine tail of the barrel are detachably connected with end covers, and one end, close to the machine head, of the barrel is provided with a feeding port. A discharging port is formed in the end, close to the tail, of the barrel, a nitrogen conveying pipeline is arranged on the outer side of the barrel and communicates with the barrel through a plurality of connecting pipes, a rotating shaft is arranged in the barrel, and propeller blades matched with the inner wall of the barrel are installed on the rotating shaft. The inner wall of the barrel and the surfaces of the propeller blades are coated with anti-static coatings, the driving motor is arranged outside the barrel and located on the side close to a machine head of the barrel, and an output shaft of the driving motor is in transmission connection with the rotating shaft through a coupler. Compared with a traditional spiral conveyor, the device is higher in safety and reliability, the machine head and the machine tail are convenient to disassemble, and internal components are convenient to overhaul.

Description

Technical Field

[0001] The utility model belongs to the technical field of screw conveyors, and particularly relates to a safe and reliable screw conveyor. Background Art

[0002] The main process principle of preparing synthetic rutile from waste acid is that the metallic iron in the reduced ilmenite powder reacts with the waste acid (dilute sulfuric acid) produced by the sulfuric acid process titanium dioxide to remove through an oxidation-reduction reaction, and the titanium dioxide in the reduced ilmenite powder does not react with dilute sulfuric acid and is enriched, so as to obtain a high-grade synthetic rutile product. A large amount of hydrogen gas will be generated during this reaction process, and hydrogen gas is an inflammable and explosive gas. To ensure the safety of production, the continuous and stable operation of equipment, and avoid the occurrence of explosion accidents, it is necessary to strengthen the safety performance of each stage of the reaction system.

[0003] At present, a screw conveyor is usually used to convey the reduced ilmenite powder in the reduced ilmenite bin to the reaction tank. However, the existing screw conveyor has the following problems: first, there is air (oxygen) inside. Once the hydrogen gas in the reaction tank leaks into the screw conveyor and mixes with air (oxygen) to reach the explosion limit, a flash explosion will occur, leading to safety accidents; second, the materials of the cylinder body and the internal propeller blades of the screw conveyor are both stainless steel, and static electric sparks are easily generated during operation, increasing the possibility of explosion; third, the two ends of the conventional screw conveyor are usually of an integral structure, which is not convenient for disassembly and maintenance when a failure occurs.

[0004] Therefore, it is urgently needed to be improved. Content of the Utility Model

[0005] In view of the above defects existing in the prior art, the utility model provides a safe and reliable screw conveyor, which includes a cylinder body and a driving motor. One end of the cylinder body is set as the head, and the other end is set as the tail. End covers are detachably connected to both the head and the tail of the cylinder body. A feed inlet is arranged at one end of the cylinder body close to the head, and a discharge outlet is arranged at one end of the cylinder body close to the tail. A nitrogen delivery pipeline is arranged outside the cylinder body, and the nitrogen delivery pipeline is communicated with the cylinder body through a plurality of connecting pipes. A rotating shaft is arranged inside the cylinder body, and a propeller blade adapted to the inner wall of the cylinder body is installed on the rotating shaft. Anti-static coatings are applied to both the inner wall of the cylinder body and the surface of the propeller blade.

[0006] The driving motor is arranged outside the cylinder body and on one side close to the head of the cylinder body. The output shaft of the driving motor is in transmission connection with the rotating shaft through a coupling.

[0007] Optionally, the feed inlet of the cylinder body is connected to a reduced ilmenite bin, and the discharge outlet of the cylinder body is connected to a reaction tank.

[0008] Optionally, the head and the tail of the cylinder body are respectively fixedly connected to the corresponding end covers through bolts.

[0009] Specifically, this facilitates disassembly and is convenient for overhauling internal components.

[0010] The present utility model further includes other components that enable a safe and reliable screw conveyor to be used normally, all of which are conventional technical means in the art. In addition, devices or components not defined in the present utility model adopt conventional technical means in the art, such as drive motors and the like.

[0011] The working principle of the present utility model is that the reduced titanium ore powder in the reduced titanium silo is transported into the reaction tank by the screw conveyor. At the same time, nitrogen is introduced into the screw conveyor through the nitrogen delivery pipeline for continuous gas replacement to provide nitrogen sealing protection, making the inside of the cylinder body under positive pressure to prevent air from entering, ensuring the timely diffusion of hydrogen to the outside, avoiding the occurrence of flash explosions, and improving the safety of production.

[0012] The beneficial effects of the present utility model are as follows: compared with the traditional screw conveyor, firstly, a nitrogen delivery pipeline is added, and nitrogen is continuously input during the transportation of the reduced titanium ore powder to provide nitrogen sealing protection, ensuring that the inside of the cylinder body is under positive pressure, preventing air from entering, and ensuring the timely diffusion of hydrogen to the outside, avoiding the occurrence of flash explosions, and improving the safety of production; secondly, anti-static coatings are applied to the inner wall of the cylinder body and the surface of the screw blades to prevent the generation of static sparks during operation and increase the safety and reliability of the equipment; thirdly, both the head and the tail of the screw conveyor are changed to a detachable structure fixed by bolts, which is convenient for overhauling internal components. Description of the Drawings

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the cylinder body of the present utility model.

[0016] In the figure: 1. Cylinder body, 2. Drive motor, 3. End cover, 4. Feed inlet, 5. Discharge outlet, 6. Nitrogen delivery pipeline, 7. Connecting pipe, 8. Rotating shaft, 9. Screw blade, 10. Reduced titanium silo, 11. Reaction tank. Specific Embodiments

[0017] The present utility model will be clearly described below in conjunction with the drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model and does not limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present utility model.

[0018] Embodiment

[0019] As Figure 1-2 shown, the embodiment of the present utility model provides a safe and reliable screw conveyor, which includes a cylinder body 1 and a driving motor 2. One end of the cylinder body 1 is set as the machine head, and the other end is set as the machine tail. End covers 3 are respectively fixedly connected to the machine head and the machine tail of the cylinder body 1 through bolts, which is convenient for disassembly and facilitates the maintenance of internal components; a feed inlet 4 is arranged at one end of the cylinder body 1 close to the machine head, and a discharge outlet 5 is arranged at one end of the cylinder body 1 close to the machine tail. A nitrogen gas conveying pipeline 6 is arranged on the outer side of the cylinder body 1, and the nitrogen gas conveying pipeline 6 is communicated with the cylinder body 1 through a plurality of connecting pipes 7. A rotating shaft 8 is arranged inside the cylinder body 1, and a screw blade 9 adapted to the inner wall of the cylinder body 1 is installed on the rotating shaft 8. Anti-static coatings are applied on the inner wall of the cylinder body 1 and the surface of the screw blade 9.

[0020] The driving motor 2 is arranged outside the cylinder body 1 and on one side close to the machine head of the cylinder body 1. The output shaft of the driving motor 2 is in transmission connection with the rotating shaft 8 through a coupling.

[0021] In addition, the feed inlet 4 of the cylinder body 1 is connected to a reduced titanium storage bin 10, and the discharge outlet 5 of the cylinder body 1 is connected to a reaction tank 11.

[0022] The working principle of the present utility model is that the reduced titanium ore powder in the reduced titanium storage bin 10 is conveyed into the reaction tank 11 through the screw conveyor. At the same time, the nitrogen gas conveying pipeline 6 feeds nitrogen gas into the screw conveyor for continuous gas replacement, providing nitrogen gas sealing protection to make the inside of the cylinder body 1 under positive pressure, preventing air from entering, and ensuring the timely outward diffusion of hydrogen gas to avoid the occurrence of flash explosion and improve the safety of production.

[0023] The embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art in the technical field without departing from the scope and spirit of the described embodiments.

Claims

1. A safe and reliable screw conveyor, comprising a cylinder and a drive motor, characterized in that: One end of the cylinder is set as the head and the other end is set as the tail. The head and the tail of the cylinder are detachably connected with end covers. A feed port is set at the end of the cylinder close to the head, and a discharge port is set at the end of the cylinder close to the tail. A nitrogen delivery pipeline is set on the outside of the cylinder, and the nitrogen delivery pipeline is connected to the cylinder through a plurality of connecting pipes. A rotating shaft is set inside the cylinder, and a propeller blade adapted to the inner wall of the cylinder is installed on the rotating shaft. The inner wall of the cylinder and the surface of the propeller blade are coated with an antistatic coating; the feed port of the cylinder is connected to a reduction titanium silo, and the discharge port of the cylinder is connected to a reaction tank; The driving motor is arranged outside the cylinder and located at a side close to the cylinder head, and the output shaft of the driving motor is connected to the rotating shaft through a coupling.

2. The safe and reliable screw conveyor according to claim 1 is characterized in that: The head and tail of the cylinder are fixedly connected to the corresponding end covers by bolts respectively.

Images