Phosphogypsum purification pretreatment device

Abstract

The utility model discloses a phosphogypsum purification pretreatment device, which relates to the technical field of phosphogypsum pretreatment and comprises a body, a first motor is fixedly connected to the top surface of the body, a stirring component is fixedly connected to an output shaft of the first motor and positioned in the body, a filter screen is fixedly connected to the inner wall of the body and is obliquely arranged, and an opening is formed in the body. A box body is fixedly connected to the outer side of the body, an extension pipe is fixedly connected to the interior of the box body, the extension pipe is communicated with the opening, a crushing assembly is arranged below the extension pipe, a scraper blade is arranged below the crushing assembly, the scraper blade is in sliding connection with the box body, and a material return opening is formed in the side, away from the scraper blade, of the box body and communicated with the body. The ardealite mixer is simple in structure and convenient to use, large particles in ardealite can be pulverized and added into the body again to be mixed, waste of raw materials is avoided, stirring time can be saved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphogypsum pretreatment, in particular to a phosphogypsum purification pretreatment device. Background Art

[0002] Phosphogypsum is an inevitable solid by-product in the wet-process phosphoric acid process and the phosphate fertilizer industry, and its main component is calcium sulfate dihydrate. At present, more than 90% of the existing phosphoric acid is prepared by the wet process. The actual comprehensive utilization rate of phosphogypsum in China is about 30% at present, mainly including the preparation of industrial gypsum and gypsum building materials; used as a cement retarder and the co-production of cement and sulfuric acid by secondary calcination. However, since phosphogypsum still retains phosphorus, fluorine, aluminum, iron, potassium, sodium, silicon and a very small amount of radioactive elements in phosphate rock, as well as impurities such as flotation reagents introduced in the wet-process phosphoric acid process. These impurities cannot be completely removed, which affects and limits the application of phosphogypsum as industrial gypsum. Coupled with the relatively low industrial value of gypsum itself, the cost of treating and recycling gypsum in phosphogypsum is much higher than the value of industrial gypsum itself. In particular, impurities such as soluble phosphorus and fluorine limit the use of phosphogypsum in the field of building materials. Therefore, at present, most of the phosphogypsum treatment in the world mainly focuses on stacking. For the problems of phosphogypsum treatment and stacking, simple, efficient and low-cost phosphogypsum treatment and purification technical means are the core steps for recycling phosphogypsum.

[0003] When purifying phosphogypsum, pretreatment is usually required. When the existing equipment pretreats phosphogypsum, phosphogypsum will be directly mixed with reagents. However, phosphogypsum usually contains large particulate matters, which are difficult to dissolve during mixing, thus reducing the working efficiency.

[0004] Therefore, the utility model provides a phosphogypsum purification pretreatment device to solve the problems existing in the above-mentioned prior art. Content of the Utility Model

[0005] To achieve the above object, the utility model provides the following scheme: The utility model provides a phosphogypsum purification pretreatment device, which includes a main body. A first motor is fixedly connected to the top surface of the main body. The output shaft of the first motor is fixedly connected with a stirring assembly, and the stirring assembly is located inside the main body. A filter screen is fixedly connected to the inner wall of the main body, and the filter screen is inclined. An opening is provided on the main body, and the opening is located at the low end of the filter screen. A box body is fixedly connected to the outside of the main body. An extension pipe is fixedly connected inside the box body, and the extension pipe is communicated with the opening. A crushing assembly is provided below the extension pipe, and a scraper is provided below the crushing assembly. The scraper is slidably connected to the box body. A material return port is opened on one side of the box body away from the scraper, and the material return port is communicated with the main body.

[0006] Preferably, the stirring assembly includes a stirring shaft fixedly connected to the output end of the first motor. The stirring shaft passes through the filter screen and is rotatably connected to the filter screen. A plurality of cross bars are fixedly connected to the side wall of the stirring shaft, and the plurality of cross bars are circumferentially arranged.

[0007] Preferably, a vertical bar is rotatably connected between two adjacent cross bars in the vertical direction. A plurality of blades are circumferentially and fixedly connected to the side wall of the vertical bar.

[0008] Preferably, the crushing assembly includes a pair of rotating rollers rotatably connected to the box body. A connecting shaft is fixedly connected through the center of the rotating roller. One end of the connecting shaft is rotatably connected to the inner wall of the box body, and the other end of the connecting shaft is fixedly connected to a driving assembly, and the driving assembly is fixedly connected to the inner wall of the box body.

[0009] Preferably, the driving assembly includes a second motor fixedly connected to the inner wall of the box body. A first gear is fixedly connected to the output shaft of the second motor. The first gear meshes with a second gear. The center of the first gear is fixedly connected to any one of the connecting shafts, and the center of the second gear is fixedly connected to the other connecting shaft.

[0010] Preferably, a through rod is rotatably connected through the scraping plate. One end of the through rod extends into the inner wall of the box body and is slidably connected to the box body. A third gear is fixedly connected to the other end of the through rod. A third motor is fixedly connected to the end of the third gear away from the through rod. The third gear meshes with a rack, and the rack is fixedly connected to the inner bottom surface of the box body.

[0011] Preferably, a partition is fixedly connected to the inner wall of the box body, and the end of the scraping plate is slidably connected to the partition.

[0012] Preferably, a feed pipe is fixedly connected and communicated with the top surface of the main body, and the feed pipe is located above the higher end of the filter screen.

[0013] The present utility model discloses the following technical effects: During use, phosphogypsum is added into the main body. After being filtered by the filter screen, the fine-grained phosphogypsum falls to the bottom of the main body, while the large-grained phosphogypsum slides from the opening into the extension pipe, and then slides from the extension pipe into the crushing assembly. After being crushed by the crushing assembly, it falls to the bottom of the box body. The scraping plate moves along the bottom of the box body, and the crushed phosphogypsum is pushed into the main body through the return port. Then, a reagent is added and the first motor is started. The first motor drives the stirring assembly to rotate, so as to mix it evenly and improve the working efficiency. The structure of the present utility model is simple and convenient to use. It can crush the large particulate matter in the phosphogypsum and re-add it into the main body for mixing, without causing waste of raw materials. At the same time, it can also save the stirring time and improve the working efficiency. Description of the Drawings

[0014] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic internal structure diagram of the body of the present utility model;

[0017] Figure 3 is a main sectional view of the box body of the present utility model;

[0018] Figure 4 is a top sectional view of the box body of the present utility model;

[0019] In the figure: 1. Body; 2. Feed pipe; 3. First motor; 4. Box body; 5. Filter screen; 6. Stirring shaft; 7. Cross bar; 8. Vertical bar; 9. Blade; 10. Opening; 11. Extension pipe; 12. Rotating roller; 13. Connecting shaft; 14. Scraper; 15. Through rod; 16. Second motor; 17. First gear; 18. Second gear; 19. Rack; 20. Partition board; 21. Third motor; 22. Third gear. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the present utility model will be further described in detail below in conjunction with the drawings and specific implementation manners.

[0022] Referring to Figures 1 - 4 as shown, this embodiment provides a phosphogypsum purification and pretreatment device, including a body 1. A first motor 3 is fixedly connected to the top surface of the body 1. The output shaft of the first motor 3 is fixedly connected to a stirring assembly. The stirring assembly is located inside the body 1. A filter screen 5 is fixedly connected to the inner wall of the body 1. The filter screen 5 is inclined. An opening 10 is provided on the body 1. The opening 10 is located at the lower end of the filter screen 5. A box body 4 is fixedly connected to the outside of the body 1. An extension pipe 11 is fixedly connected inside the box body 4. The extension pipe 11 is communicated with the opening 10. A crushing assembly is provided below the extension pipe 11. A scraper 14 is provided below the crushing assembly. The scraper 14 is slidably connected to the box body 4. A return port is opened on one side of the box body 4 away from the scraper 14. The return port is communicated with the body 1.

[0023] During use, phosphogypsum is added into the main body 1. After being filtered by the filter screen 5, the fine-grained phosphogypsum falls to the bottom of the main body 1, while the large-grained phosphogypsum slides down from the opening 10 into the extension pipe 11, and then slides down from the extension pipe 11 into the crushing assembly. After being crushed by the crushing assembly, it falls to the bottom of the box body 4. The scraper 14 moves along the bottom of the box body 4, and pushes the crushed phosphogypsum into the main body 1 through the return port. Then, reagents are added and the first motor 3 is started. The first motor 3 drives the stirring assembly to rotate, so as to mix them evenly and improve the working efficiency. The utility model has a simple structure and is convenient to use. It can crush the large particulate matters in the phosphogypsum and re-add them into the main body 1 for mixing, without causing waste of raw materials. At the same time, it can also save the stirring time and improve the working efficiency.

[0024] In a further optimized solution, the stirring assembly includes a stirring shaft 6 fixedly connected to the output end of the first motor 3. The stirring shaft 6 passes through the filter screen 5 and is rotatably connected to the filter screen 5. A plurality of cross bars 7 are fixedly connected to the side wall of the stirring shaft 6, and the plurality of cross bars 7 are arranged circumferentially. The first motor 3 drives the stirring shaft 6 to rotate, the stirring shaft 6 drives the cross bars 7 to rotate, and the cross bars 7 mix the reagents and phosphogypsum evenly, so as to achieve the purpose of pretreatment.

[0025] In a further optimized solution, a vertical rod 8 is rotatably connected between two adjacent cross bars 7 in the vertical direction. A plurality of blades 9 are fixedly connected to the circumferential side wall of the vertical rod 8. When the cross bar 7 rotates, it drives the vertical rod 8 to rotate accordingly. When the vertical rod 8 rotates, the blades 9 contact the liquid, so that the vertical rod 8 and the blades 9 rotate, accelerating the flow of the liquid and improving the stirring rate.

[0026] In a further optimized solution, the crushing assembly includes a pair of rotating rollers 12 rotatably connected to the box body 4. A connecting shaft 13 is fixedly connected through the center of the rotating roller 12. One end of the connecting shaft 13 is rotatably connected to the inner wall of the box body 4, and the other end of the connecting shaft 13 is fixedly connected with a driving assembly, and the driving assembly is fixedly connected to the inner wall of the box body 4. The driving assembly drives the two connecting shafts 13 to rotate, the connecting shafts 13 drive the rotating rollers 12 to rotate, and the rotating directions of the two rotating rollers 12 are opposite. The large particulate matters fall at the gap between the two rotating rollers 12, so as to crush the particulate matters and improve the stirring efficiency.

[0027] In a further optimized solution, the driving assembly includes a second motor 16 fixedly connected to the inner wall of the box body 4. A first gear 17 is fixedly connected to the output shaft of the second motor 16. The first gear 17 meshes with a second gear 18. The center of the first gear 17 is fixedly connected to any one of the connecting shafts 13, and the center of the second gear 18 is fixedly connected to the other connecting shaft 13. The second motor 16 drives the first gear 17 to rotate, the first gear 17 drives the second gear 18 to rotate, and the rotating directions of the first gear 17 and the second gear 18 are opposite, so that the rotating directions of the two rotating rollers 12 are opposite, which is convenient for completing the crushing work.

[0028] For a further optimized solution, a through rod 15 is rotatably connected through the scraping plate 14. One end of the through rod 15 extends into the inner wall of the box body 4 and is slidably connected to the box body 4. The other end of the through rod 15 is fixedly connected with a third gear 22. One end of the third gear 22 away from the through rod 15 is fixedly connected with a third motor 21. The third gear 22 meshes with a rack 19, and the rack 19 is fixedly connected to the inner bottom surface of the box body 4. The third motor 21 drives the third gear 22 to rotate. When the third gear 22 rotates, it moves on the rack 19. The third gear 22 drives the through rod 15 to move, and the through rod 15 drives the scraping plate 14 to move, so as to push the crushed material back into the main body 1, reducing waste.

[0029] For a further optimized solution, a partition plate 20 is fixedly connected to the inner wall of the box body 4, and the end of the scraping plate 14 is slidably connected to the partition plate 20. The setting of the partition plate 20 can prevent the material from falling onto the rack 19, thus affecting the transmission effect.

[0030] For a further optimized solution, a feed pipe 2 is fixedly connected and communicated with the top surface of the main body 1, and the feed pipe 2 is located above the higher end of the filter screen 5. The material enters the main body 1 from the feed pipe 2 and falls on the high end of the filter screen 5. The large particles slide down along the filter screen 5 to the opening 10 and then are crushed.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] The embodiments described above are only descriptions of the preferred modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A phosphogypsum purification pretreatment device, characterized in that: The invention comprises a main body (1), wherein a first motor (3) is fixedly connected to the top surface of the main body (1), an output shaft of the first motor (3) is fixedly connected to a stirring assembly, the stirring assembly is located inside the main body (1), a filter screen (5) is fixedly connected to the inner wall of the main body (1), the filter screen (5) is arranged obliquely, an opening (10) is provided on the main body (1), the opening (10) is located at the lower end of the filter screen (5), a box body (4) is fixedly connected to the outer side of the main body (1), an extension tube (11) is fixedly connected to the box body (4), the extension tube (11) is connected to the opening (10), a crushing assembly is provided below the extension tube (11), a scraper (14) is provided below the crushing assembly, the scraper (14) is slidably connected to the box body (4), a return port is provided on a side of the box body (4) away from the scraper (14), and the return port is connected to the main body (1).

2. The phosphogypsum purification pretreatment device according to claim 1, characterized in that: The stirring assembly comprises a stirring shaft (6) fixedly connected to the output end of the first motor (3); the stirring shaft (6) passes through the filter screen (5) and is rotatably connected to the filter screen (5); a plurality of cross bars (7) are fixedly connected to the side wall of the stirring shaft (6); and the plurality of cross bars (7) are circumferentially arranged.

3. The phosphogypsum purification pretreatment device according to claim 2, characterized in that: A vertical rod (8) is rotatably connected between two adjacent horizontal rods (7) in the vertical direction, and a plurality of blades (9) are circumferentially fixed to the side walls of the vertical rod (8).

4. The phosphogypsum purification pretreatment device according to claim 1, characterized in that: The crushing assembly comprises a pair of rotating rollers (12) rotatably connected to the box body (4); a connecting shaft (13) passes through the center of the rotating roller (12) and is fixedly connected thereto; one end of the connecting shaft (13) is rotatably connected to the inner wall of the box body (4); the other end of the connecting shaft (13) is fixedly connected to a driving assembly, and the driving assembly is fixedly connected to the inner wall of the box body (4).

5. The phosphogypsum purification pretreatment device according to claim 4, characterized in that: The driving assembly comprises a second motor (16) fixedly connected to the inner wall of the box body (4); the output shaft of the second motor (16) is fixedly connected to a first gear (17); the first gear (17) is meshed with a second gear (18); the center of the first gear (17) is fixedly connected to any one of the connecting shafts (13); and the center of the second gear (18) is fixedly connected to the other of the connecting shafts (13).

6. The phosphogypsum purification pretreatment device according to claim 1, characterized in that: A through rod (15) is rotatably connected to the scraper (14), one end of the through rod (15) extends into the inner wall of the box body (4) and is slidably connected to the box body (4), the other end of the through rod (15) is fixedly connected to a third gear (22), one end of the third gear (22) away from the through rod (15) is fixedly connected to a third motor (21), the third gear (22) is meshed with a rack (19), and the rack (19) is fixedly connected to the inner bottom surface of the box body (4).

7. The phosphogypsum purification pretreatment device according to claim 6, characterized in that: A partition plate (20) is fixedly connected to the inner wall of the box body (4), and the end of the scraper (14) is slidably connected to the partition plate (20).

8. The phosphogypsum purification pretreatment device according to claim 1, characterized in that: The top surface of the body (1) is fixedly connected to and communicated with a feed pipe (2), and the feed pipe (2) is located above the higher end of the filter screen (5).

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