A pulsed gas flow high-purity arsenic extraction device

Abstract

This utility model relates to the field of arsenic extraction technology, and more particularly to a pulsed airflow high-purity arsenic extraction device. The technical solution includes a blower, a drying vertical pipe, and a cyclone separator. A base is fixedly connected to the lower surface of the drying vertical pipe. The output end of the blower and the input end of the heater are fixedly connected. The output end of the heater is fixedly connected to the outer surface of the base. A rotating shaft is rotatably mounted on the bottom of the inner wall of the base. Fan blades are fixedly mounted on the outer surface of the rotating shaft, and the fan blades are located inside the base. A screw conveyor is fixedly mounted on the outer surface of the drying vertical pipe near its lower surface. This utility model disperses the arsenic-containing raw material upon entering the drying vertical pipe, allowing for sufficient contact between the raw material and the hot air, improving drying efficiency, facilitating subsequent arsenic purification, and preventing pipe blockage.

Description

Technical Field

[0001] This utility model relates to the field of arsenic extraction technology, specifically to a pulsed airflow high-purity arsenic extraction device. Background Technology

[0002] Arsenic is a metalloid element with three allotropes: gray arsenic (metallic arsenic), yellow arsenic, and black arsenic. Gray arsenic is the most stable at room temperature. It mainly forms alloys with copper, lead, and other metals and is also used to manufacture arsenates, pharmaceuticals, and pesticides. High-purity arsenic can also be used in semiconductor and laser technology. In the process of arsenic extraction, pulsed airflow drying equipment is required to dry the arsenic-containing raw materials and remove moisture or volume.

[0003] Currently, pulsed airflow drying equipment used for arsenic extraction often results in large particles or agglomerates of arsenic-containing raw materials entering the drying vertical tube during operation. These particles cannot disperse and fully contact with the hot air, reducing drying efficiency and hindering subsequent arsenic purification. Therefore, we propose a pulsed airflow high-purity arsenic extraction equipment. Utility Model Content

[0004] The purpose of this invention is to provide a pulsed airflow high-purity arsenic extraction device, which disperses arsenic-containing raw materials upon entering the drying vertical tube, allowing for full contact between the raw materials and hot air, thus improving drying efficiency and facilitating subsequent arsenic purification. It also avoids pipe blockage, solving the problem that current pulsed airflow drying devices for arsenic extraction often contain large particles or clumps of arsenic-containing raw materials that cannot be dispersed and fully contacted with hot air, reducing drying efficiency and hindering subsequent arsenic purification.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pulsed airflow high-purity arsenic extraction device, comprising a fan, a drying vertical pipe, and a cyclone separator. A base is fixedly connected to the lower surface of the drying vertical pipe. The output end of the fan and the input end of the heater are fixedly connected. The output end of the heater is fixedly connected to the outer surface of the base. A rotating shaft is rotatably installed at the bottom of the inner wall of the base. Fan blades are fixedly installed on the outer surface of the rotating shaft, and the fan blades are located inside the base. A screw conveyor is fixedly installed on the outer surface of the drying vertical pipe near the lower surface. Upper dispersing blades and lower dispersing blades are fixedly installed on the outer surface of the rotating shaft above and below the screw conveyor, respectively.

[0006] Preferably, an air filter is fixedly installed at the fan input end. Outside air is filtered through the air filter before entering the fan to prevent dust and impurities from entering the fan.

[0007] Preferably, a filter screen is fixedly installed inside the base above the fan blades. The filter screen can prevent arsenic-containing raw materials from falling into the base and contacting the fan blades, causing damage to the fan blades. At the same time, it can also facilitate the uniform entry of hot air inside the base into the drying vertical pipe from bottom to top.

[0008] Preferably, a cylindrical liner is fixedly installed inside the drying vertical tube near the lower surface, and both the upper and lower dispersing blades are located inside the cylindrical liner. The cylindrical liner can prevent the arsenic-containing raw material from impacting the inner wall of the drying vertical tube when it is dispersed by the upper and lower dispersing blades, thus extending the service life of the drying vertical tube.

[0009] Preferably, a hopper is fixedly installed on the upper surface of the screw conveyor, the arsenic-containing raw material is placed inside the hopper, and the arsenic-containing raw material is transported to the drying vertical pipe by the screw conveyor.

[0010] Preferably, a connecting pipe is fixedly connected to the upper surface of the drying vertical pipe, and the end of the connecting pipe is fixedly connected to the outer surface of the cyclone separator. An air outlet pipe is fixedly connected to the upper surface of the cyclone separator, and a discharge valve is fixedly connected to the lower surface of the cyclone separator. The dried arsenic-containing raw material enters the cyclone separator along with the hot air. After the two are separated inside the cyclone separator, the hot air is discharged from the air outlet pipe, while the dried arsenic-containing raw material is discharged from the discharge valve.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by setting up a fan, heater, base, drying vertical pipe, screw conveyor, rotating shaft, fan blades, upper dispersing blades, and lower dispersing blades, achieves the effect of dispersing and dispersing the arsenic-containing raw material when it enters the drying vertical pipe. This allows the arsenic-containing raw material to fully contact the hot air, improving drying efficiency and facilitating subsequent arsenic purification. It also avoids pipe blockage. The arsenic-containing raw material is transported into the drying vertical pipe by the screw conveyor, and the fan supplies air into the heater. After being heated, the air enters the base and drives the fan blades to rotate, which in turn drives... The rotating shaft, upper dispersing blades, and lower dispersing blades rotate. When the clumps of arsenic-containing raw material move downwards due to gravity, they are broken up by the lower dispersing blades. Then, hot air from inside the base enters the drying vertical tube from bottom to top and mixes with the broken-up arsenic-containing raw material, causing it to rise. During the ascent, the upper dispersing blades break up any large particles of arsenic-containing raw material again, allowing the arsenic-containing raw material to come into full contact with the hot air. As the arsenic-containing raw material rises with the hot air, heat is exchanged, causing the moisture or solvent in the arsenic-containing raw material to evaporate, thus achieving the purpose of drying the arsenic-containing raw material.

[0013] 2. By setting up a filter screen, this utility model avoids arsenic-containing raw materials from falling into the base and coming into contact with the fan blades, thus preventing damage to the fan blades. At the same time, it also facilitates the even entry of hot air from the base into the drying vertical tube from bottom to top.

[0014] 3. By setting a cylindrical liner, this utility model can avoid the impact of arsenic-containing raw materials on the inner wall of the drying vertical tube when they are dispersed by the upper and lower dispersing blades, thus extending the service life of the drying vertical tube. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial three-dimensional structural diagram of the fan of this utility model;

[0017] Figure 3 This is a partial three-dimensional structural diagram of the drying vertical pipe of this utility model;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the rotating shaft of this utility model.

[0019] Reference numerals: 1. Fan; 2. Drying vertical pipe; 3. Connecting pipe; 4. Air outlet pipe; 5. Cyclone separator; 6. Discharge valve; 7. Base; 8. Air filter; 9. Heater; 10. Rotating shaft; 11. Cylindrical liner; 12. Hopper; 13. Screw conveyor; 14. Filter screen; 15. Fan blade; 16. Lower dispersing blade; 17. Upper dispersing blade. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] like Figures 1-4 As shown, the present invention proposes a pulsed airflow high-purity arsenic extraction device, including a fan 1, a drying vertical pipe 2, and a cyclone separator 5. The diameter of the drying vertical pipe 2 alternately decreases or increases, so that the hot airflow and arsenic-containing raw material particles flow at different speeds inside the drying vertical pipe 2. The relative velocity and heat transfer area between the airflow and particles are relatively large, thereby enhancing the heat and mass transfer rate. A base 7 is fixedly connected to the lower surface of the drying vertical pipe 2. The base 7 is hollow inside and communicates with the inside of the drying vertical pipe 2. An air filter 8 is fixedly installed at the input end of the fan 1. Before entering the fan 1, the outside air is filtered by the air filter 8 to prevent dust and impurities from entering the fan 1.

[0023] The output end of the fan 1 and the input end of the heater 9 are fixedly connected. The output end of the heater 9 is fixedly connected to the outer surface of the base 7. A rotating shaft 10 is rotatably installed on the bottom of the inner wall of the base 7. A fan blade 15 is fixedly installed on the outer surface of the rotating shaft 10, and the fan blade 15 is located inside the base 7. A filter screen 14 is fixedly installed inside the base 7 above the fan blade 15. The filter screen 14 can prevent arsenic-containing raw materials from falling into the base 7 and contacting the fan blade 15, causing damage to the fan blade 15. At the same time, it can also facilitate the even entry of hot air inside the base 7 into the drying vertical pipe 2 from bottom to top. The outer surface of the drying vertical pipe 2 is located near the lower surface. A screw conveyor 13 is fixedly installed at the location. A hopper 12 is fixedly installed on the upper surface of the screw conveyor 13. The arsenic-containing raw material is placed inside the hopper 12 and transported to the drying vertical pipe 2 by the screw conveyor 13. An upper dispersing blade 17 and a lower dispersing blade 16 are fixedly installed on the outer surface of the rotating shaft 10 at positions above and below the screw conveyor 13, respectively. A connecting pipe 3 is fixedly connected to the upper surface of the drying vertical pipe 2, and the end of the connecting pipe 3 is fixedly connected to the outer surface of the cyclone separator 5. An air outlet pipe 4 is fixedly connected to the upper surface of the cyclone separator 5, and a discharge valve 6 is fixedly connected to the lower surface of the cyclone separator 5.

[0024] In use, the arsenic-containing raw material is conveyed into the drying vertical pipe 2 via a screw conveyor 13. A fan 1 supplies air into the heater 9. The heated air enters the base 7 and drives the fan blades 15 to rotate. The rotation of the fan blades 15, in turn, drives the rotating shaft 10, the upper dispersing blades 17, and the lower dispersing blades 16 to rotate. The clumps of arsenic-containing raw material, moving downwards due to gravity, are dispersed by the lower dispersing blades 16. Then, the hot air inside the base 7 enters the drying vertical pipe 2 from bottom to top and mixes with the dispersed arsenic-containing raw material, driving... As the arsenic-containing raw material rises, the larger particles are dispersed by the upper dispersing blades 17 during the ascent, allowing the arsenic-containing raw material to disperse and come into full contact with the hot air. During the ascent, the arsenic-containing raw material exchanges heat with the hot air, causing the moisture or solvent in the arsenic-containing raw material to evaporate, thus achieving the purpose of drying the arsenic-containing raw material. The dried arsenic-containing raw material enters the cyclone separator 5 along with the hot air. After separation inside the cyclone separator 5, the hot air is discharged from the air outlet pipe 4, while the dried arsenic-containing raw material is discharged from the discharge valve 6.

[0025] Example 2

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the pulsed airflow high-purity arsenic extraction device proposed in this utility model, compared with the first embodiment, further includes a cylindrical liner 11 fixedly installed inside the drying vertical tube 2 near the lower surface, and the upper dispersing blade 17 and the lower dispersing blade 16 are both located inside the cylindrical liner 11.

[0027] In this embodiment, the cylindrical liner 11 can prevent the arsenic-containing raw material from impacting the inner wall of the drying vertical tube 2 when it is dispersed by the upper dispersing blade 17 and the lower dispersing blade 16, thus extending the service life of the drying vertical tube 2.

[0028] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A pulsed gas flow high-purity arsenic extraction device, comprising a blower (1), a drying vertical pipe (2), and a cyclone separator (5), characterized in that: A base (7) is fixedly connected to the lower surface of the drying vertical pipe (2). The output end of the fan (1) and the input end of the heater (9) are fixedly connected. The output end of the heater (9) is fixedly connected to the outer surface of the base (7). A rotating shaft (10) is rotatably installed at the bottom of the inner wall of the base (7). A fan blade (15) is fixedly installed on the outer surface of the rotating shaft (10), and the fan blade (15) is located inside the base (7). A screw conveyor (13) is fixedly installed on the outer surface of the drying vertical pipe (2) near the lower surface. An upper dispersing blade (17) and a lower dispersing blade (16) are fixedly installed on the outer surface of the rotating shaft (10) above and below the screw conveyor (13), respectively.

2. The pulsed gas flow high-purity arsenic extraction device according to claim 1, characterized in that: An air filter (8) is fixedly installed at the input end of the fan (1).

3. The pulsed gas flow high-purity arsenic extraction device according to claim 1, characterized in that: A filter screen (14) is fixedly installed inside the base (7) above the fan blade (15).

4. The pulsed gas flow high-purity arsenic extraction device according to claim 1, characterized in that: A cylindrical liner (11) is fixedly installed inside the drying vertical tube (2) near the lower surface, and both the upper dispersing blade (17) and the lower dispersing blade (16) are located inside the cylindrical liner (11).

5. The pulsed gas flow high-purity arsenic extraction device according to claim 1, characterized in that: A hopper (12) is fixedly installed on the upper surface of the screw conveyor (13).

6. The pulsed gas flow high-purity arsenic extraction device according to claim 1, characterized in that: The upper surface of the drying vertical pipe (2) is fixedly connected to a connecting pipe (3), and the end of the connecting pipe (3) is fixedly connected to the outer surface of the cyclone separator (5). The upper surface of the cyclone separator (5) is fixedly connected to an air outlet pipe (4), and the lower surface of the cyclone separator (5) is fixedly connected to a discharge valve (6).

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