Multi-filtering device for purifying monoammonium phosphate

Abstract

The utility model relates to the technical field of monoammonium phosphate filtering, and discloses a multiple filtering device for monoammonium phosphate purification, which comprises a first filtering assembly, the first filtering assembly comprises a filtering box, and a filtering plate is arranged in a cavity of the filtering box; the second filtering assembly comprises a first filtering cylinder and a cylindrical filtering frame; the third filtering assembly comprises a second filtering cylinder and a gathering box, and a linkage stirring unit is arranged between the second filtering cylinder and the first filtering cylinder; the linkage stirring unit comprises a tray, a main rotating shaft and a conical linkage box, and a first gear and a second gear are arranged in a cavity of the conical linkage box. Through the design of multiple filtering structures, the filtering efficiency is improved, then the purity of monoammonium phosphate slurry is improved, through the arrangement of the linkage stirring unit, slurry in the second filtering cylinder and the cylindrical filtering frame cavity can be stirred at the same time, impurities are prevented from blocking via holes, and the overall filtering efficiency of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of monoammonium phosphate filtration technology, and in particular to a multi-stage filtration device for monoammonium phosphate purification. Background Technology

[0002] In the production of monoammonium phosphate, pipelines are used to transport the monoammonium phosphate slurry. However, there are certain impurities in the monoammonium phosphate slurry, so it needs to be filtered during the pipeline process.

[0003] For example, the utility model application with application number CN202322913802.9 discloses a monoammonium phosphate slurry filter, which includes a box, a buffer box inside the box, a stirring assembly inside the buffer box, multiple filter cylinders detachably provided at the bottom of the buffer box, a feed pipe at the top of the box that communicates with the buffer box, and a discharge pipe on the right side surface of the box.

[0004] The above-mentioned device uses a single-stage filtration system, which has limited filtration efficiency. For the monoammonium phosphate raw material required for the preparation of ferric phosphate, a higher purity monoammonium phosphate is needed. Therefore, a multi-stage filtration device is required to purify the monoammonium phosphate slurry.

[0005] Therefore, those skilled in the art have provided a multi-stage filtration device for the purification of monoammonium phosphate. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a multi-stage filtration device for monoammonium phosphate purification, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0008] A multi-stage filtration device for purifying monoammonium phosphate includes a first filtration assembly comprising a filter box with a filter plate disposed within the filter box cavity; a second filtration assembly comprising a first filter cylinder and a cylindrical filter frame disposed within the first filter cylinder cavity; and a third filtration assembly comprising a second filter cylinder and a collection box, wherein multiple sets of second filter cylinders are connected and mounted on the top of the collection box, and a linkage stirring unit is provided between the second filter cylinders and the first filter cylinders; the linkage stirring unit comprises a tray, a main rotating shaft, and a conical linkage box, with a first gear and a second gear disposed within the conical linkage box cavity.

[0009] According to the aforementioned multi-stage filtration device for monoammonium phosphate purification, a support frame is fixedly installed on the outer wall of the first filter cylinder, a filter box is fixedly installed on the top of the first filter cylinder, the filter box is in communication with the first filter cylinder, and a feeding pipe is connected through the top of the filter box.

[0010] According to the aforementioned multi-filtration device for purifying monoammonium phosphate, the collecting box is funnel-shaped, and a discharge pipe is connected through the bottom of the collecting box.

[0011] According to the aforementioned multi-stage filtration device for monoammonium phosphate purification, a first through hole with equal spacing is provided between the top and bottom ends of the filter plate. The cylindrical filter frame is a hollow circular body and is movably installed in the first filter cylinder cavity. The outer wall surface of the cylindrical filter frame is provided with a second through hole with equal spacing. The diameter of the second through hole is smaller than that of the first through hole. A third through hole is provided at the bottom end of the auxiliary rotating shaft. The diameter of the third through hole is smaller than that of the second through hole.

[0012] According to the aforementioned multi-stage filtration device for monoammonium phosphate purification, the tops of multiple sets of second filter cartridges are installed at the bottom of a tray, the tray is installed at the bottom of the first filter cartridge, and the tops of the tray are tilted.

[0013] According to the aforementioned multi-stage filtration device for monoammonium phosphate purification, an isolation column is fixedly installed in the middle position of the tray cavity, a drive motor is installed inside the isolation column, a conical linkage box is installed at the top of the isolation column, and the cavity of the conical linkage box is in communication with the isolation column. The output shaft of the drive motor is fixedly connected to the main rotating shaft.

[0014] According to the aforementioned multi-stage filtration device for monoammonium phosphate purification, the top of the main rotating shaft movably passes through the top of the conical linkage box and the bottom of the cylindrical filter frame. A scraper is fixedly installed on the outer wall of the main rotating shaft inside the cylindrical filter frame cavity. A first gear is fixedly passed through the outer wall of the main rotating shaft inside the conical linkage box cavity. A secondary rotating shaft is provided inside the second filter cylinder cavity. The top of the secondary rotating shaft movably passes through the conical linkage box and is fixedly passed through the corresponding second gear. The first gear meshes with multiple sets of second gears. A scraper is fixedly installed on the outer wall of the secondary rotating shaft.

[0015] This invention provides a multi-stage filtration device for purifying monoammonium phosphate (MAP), which has the following advantages: MAP slurry enters the filter chamber through a feeding pipe, undergoes a first filtration through a filter plate, and then undergoes a second filtration through a cylindrical filter frame in the first filter chamber. The slurry falls into a tray chamber and enters the second filter chamber for a third filtration. The multi-stage filtration structure improves filtration efficiency and thus increases the purity of the MAP slurry. A linkage stirring unit simultaneously stirs the slurry in both the second filter chamber and the cylindrical filter frame chamber, preventing impurities from clogging the pores and improving the overall filtration efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a multi-stage filtration device for purifying monoammonium phosphate according to the present invention;

[0017] Figure 2This is a perspective view of the filter plate of a multi-stage filtration device for purifying monoammonium phosphate according to the present invention.

[0018] Figure 3 This is a schematic diagram showing the positional relationship between the first filter cylinder and the cylindrical filter frame of a multi-stage filtration device for purifying monoammonium phosphate according to the present invention.

[0019] Figure 4 This is a schematic diagram showing the connection relationship between the second filter cartridge and the collection box of a multi-stage filtration device for purifying monoammonium phosphate according to this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the linkage stirring unit of a multi-filtration device for purifying monoammonium phosphate according to the present invention;

[0021] Figure 6 This is a schematic diagram of the internal structure of the conical linkage box cavity of a multi-filtration device for purifying monoammonium phosphate according to this utility model.

[0022] Legend:

[0023] 10. Filter box; 11. First filter cylinder; 12. Second filter cylinder; 13. Converging box; 14. Feed pipe; 15. Tray; 16. Filter plate; 17. Columnar filter frame; 18. Secondary rotating shaft; 19. Conical linkage box; 20. Main rotating shaft; 21. Scraper; 22. First gear; 23. Second gear; 24. Discharge pipe. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0025] Please see Figure 1-6 As shown, this utility model is a multi-stage filtration device for purifying monoammonium phosphate, comprising a first filtration assembly, which includes a filter box 10, and a filter plate 16 disposed inside the cavity of the filter box 10; a second filtration assembly, which includes a first filter cylinder 11 and a cylindrical filter frame 17 disposed inside the cavity of the first filter cylinder 11; and a third filtration assembly, which includes a second filter cylinder 12 and a collection box 13, wherein multiple sets of second filter cylinders 12 are connected and installed at the top of the collection box 13, and a linkage stirring unit is provided between the second filter cylinders 12 and the first filter cylinders 11; the linkage stirring unit includes a tray 15, a main rotating shaft 20, and a conical linkage box 19, and a first gear 22 and a second gear 23 disposed inside the cavity of the conical linkage box 19.

[0026] Specifically, monoammonium phosphate slurry enters the filter chamber 10 through the feed pipe 14. The monoammonium phosphate slurry undergoes a first filtration through the filter plate 16. After the first filtration, the monoammonium phosphate slurry undergoes a second filtration through the cylindrical filter frame 17 in the first filter cylinder 11. The slurry falls into the tray 15 and enters the second filter cylinder 12 for a third filtration. The design of the multi-filtration structure improves the filtration efficiency and thus the purity of the monoammonium phosphate slurry. By setting up a linkage stirring unit, the slurry in the second filter cylinder 12 and the cylindrical filter frame 17 can be stirred simultaneously, improving the overall filtration efficiency of the device.

[0027] Among them, such as Figure 1-2 As shown, a support frame is fixedly installed on the outer wall of the first filter cylinder 11, and a filter box 10 is fixedly installed on the top of the first filter cylinder 11. The filter box 10 is connected to the first filter cylinder 11, and a feed pipe 14 is connected through the top of the filter box 10. The collecting box 13 is funnel-shaped, and a discharge pipe 24 is connected through the bottom of the collecting box 13.

[0028] Specifically, the first filter cartridge 11 is installed on the ground by a support frame, and the filter box 10 is connected to the first filter cartridge 11, so that the monoammonium phosphate slurry enters the first filter cartridge 11 from the cavity of the filter box 10.

[0029] Among them, such as Figure 2-4 As shown, a first through-hole with equal spacing is formed between the top and bottom of the filter plate 16. The cylindrical filter frame 17 is a hollow circular body and is movably installed inside the cavity of the first filter cylinder 11. The outer wall of the cylindrical filter frame 17 has a second through-hole with equal spacing, the diameter of which is smaller than that of the first through-hole. A third through-hole with a smaller diameter than that of the second through-hole is formed at the bottom of the auxiliary rotating shaft 18. The tops of multiple sets of second filter cylinders 12 are mounted on the bottom of the tray 15, which is mounted on the bottom of the first filter cylinder 11. The tops of the tray 15 are tilted.

[0030] Specifically, by setting a first through hole with equal spacing between the top and bottom of the filter plate 16, and a second through hole with equal spacing on the outer wall of the cylindrical filter frame 17, the diameter of the second through hole is smaller than that of the first through hole, and the diameter of the third through hole is smaller than that of the second through hole, the filtration becomes increasingly fine in the multiple filtration process.

[0031] Among them, such as Figure 5-6As shown, an isolation column is fixedly installed in the middle of the cavity of tray 15. A drive motor is installed inside the isolation column. A conical linkage box 19 is installed at the top of the isolation column and is connected to the isolation column. The output shaft of the drive motor is fixedly connected to the main rotating shaft 20. The top of the main rotating shaft 20 moves through the top of the conical linkage box 19 and the bottom of the cylindrical filter frame 17. A scraper 21 is fixedly installed on the outer wall of the main rotating shaft 20 inside the cavity of the cylindrical filter frame 17. A first gear 22 is fixedly passed through the outer wall of the main rotating shaft 20 inside the cavity of the conical linkage box 19. A secondary rotating shaft 18 is provided in the cavity of the second filter cylinder 12. The top of the secondary rotating shaft 18 moves through the conical linkage box 19 and is fixedly passed through the corresponding second gear 23. The first gear 22 meshes with multiple sets of second gears 23. A scraper is fixedly installed on the outer wall of the secondary rotating shaft 18.

[0032] Specifically, an isolation column is fixedly installed in the middle of the cavity of the tray 15, and a drive motor is installed inside the isolation column. A conical linkage box 19 is installed at the top of the isolation column, and the cavity of the conical linkage box 19 is connected to the isolation column. The output shaft of the drive motor is fixedly connected to the main rotating shaft 20. When the drive motor is working, it drives the main rotating shaft 20 to rotate. A scraper 21 is fixedly installed on the outer wall of the main rotating shaft 20. The scraper 21 scrapes the inner wall of the cylindrical filter frame 17. The main rotating shaft 20 is fixedly connected to the first gear 22, and the top of the auxiliary rotating shaft 18 is fixedly connected to the second gear 23. The first gear 22 and multiple sets of second gears 23 are movably meshed, thereby driving multiple sets of auxiliary rotating shafts 18 to rotate. The auxiliary rotating shafts 18 drive the corresponding scraper to rotate synchronously and scrape the bottom of the auxiliary rotating shafts 18, thereby improving the filtration speed and avoiding clogging of the pores.

[0033] The specific working principle of this utility model of a multi-stage filtration device for monoammonium phosphate purification is as follows: When the drive motor is working, it drives the main shaft 20 to rotate. The scraper 21 is fixedly installed on the outer wall of the main shaft 20. The scraper 21 scrapes the inner wall of the cylindrical filter frame 17. The main shaft 20 is fixedly connected to the first gear 22, and the top of the auxiliary shaft 18 is fixedly connected to the second gear 23. The first gear 22 and multiple sets of second gears 23 are movably meshed, thereby driving multiple sets of auxiliary shafts 18 to rotate. The auxiliary shafts 18 drive the corresponding scrapers to rotate synchronously and scrape the bottom of the auxiliary shafts 18, thereby improving the filtration speed and avoiding clogging of the orifices. The monoammonium phosphate slurry enters the chamber of the filter box 10 through the feed pipe 14. The monoammonium phosphate slurry undergoes the first filtration through the filter plate 16. After the first filtration, the monoammonium phosphate slurry undergoes the second filtration through the cylindrical filter frame 17 in the chamber of the first filter cylinder 11. The slurry falls into the chamber of the tray 15 and enters the second filter cylinder 12 for the third filtration. The filtration efficiency is improved through the design of the multi-stage filtration structure.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A multi-stage filtration device for purifying monoammonium phosphate, characterized in that, include: The first filter assembly includes a filter box (10) and a filter plate (16) is disposed inside the cavity of the filter box (10). The second filter assembly includes a first filter cylinder (11) and a cylindrical filter frame (17), with the cylindrical filter frame (17) disposed inside the cavity of the first filter cylinder (11). The third filter assembly includes a second filter cylinder (12) and a collection box (13). The second filter cylinder (12) consists of multiple sets, and the multiple sets of second filter cylinders (12) are installed in a continuous manner at the top of the collection box (13). A linkage stirring unit is provided between the second filter cylinder (12) and the first filter cylinder (11). The linkage stirring unit includes a tray (15), a main rotating shaft (20) and a conical linkage box (19), and a first gear (22) and a second gear (23) are provided in the cavity of the conical linkage box (19).

2. The multiple filter device for purifying monoammonium phosphate according to claim 1, characterized by: A support frame is fixedly installed on the outer wall of the first filter cylinder (11), and a filter box (10) is fixedly installed on the top of the first filter cylinder (11). The filter box (10) is connected to the first filter cylinder (11), and a feeding pipe (14) is connected to the top of the filter box (10).

3. The multiple filter device for purifying monoammonium phosphate according to claim 1, characterized by: The collecting box (13) is funnel-shaped, and the bottom end of the collecting box (13) is connected to the discharge pipe (24).

4. The multiple filter device for purifying monoammonium phosphate according to claim 1, characterized by: The filter plate (16) has a first through hole with equal spacing between its top and bottom ends. The cylindrical filter frame (17) is a hollow circular body. The cylindrical filter frame (17) is movably installed in the cavity of the first filter cylinder (11). The outer wall surface of the cylindrical filter frame (17) has a second through hole with equal spacing. The diameter of the second through hole is smaller than that of the first through hole. The bottom end of the second filter cylinder (12) has a third through hole with a diameter smaller than that of the second through hole.

5. The multiple filter device for purifying monoammonium phosphate according to claim 1, characterized by: The top of multiple sets of the second filter cartridges (12) are installed at the bottom of the tray (15), the tray (15) is installed at the bottom of the first filter cartridge (11), and the top of the tray (15) is tilted.

6. The multiple filter device for purifying monoammonium phosphate according to claim 5, characterized by: An isolation column is fixedly installed in the middle of the cavity of the tray (15). A drive motor is installed in the isolation column. A conical linkage box (19) is installed at the top of the isolation column and the cavity of the conical linkage box (19) is connected to the isolation column. The output shaft of the drive motor is fixedly connected to the main rotating shaft (20).

7. The multiple filter device for purifying monoammonium phosphate according to claim 6, characterized by: The top of the main rotating shaft (20) moves through the top of the conical linkage box (19) and the bottom of the cylindrical filter frame (17). A scraper (21) is fixedly installed on the outer wall of the main rotating shaft (20) inside the cavity of the cylindrical filter frame (17). The first gear (22) is fixedly passed through the outer wall of the main rotating shaft (20) inside the cavity of the conical linkage box (19). A secondary rotating shaft (18) is provided inside the cavity of the second filter cylinder (12). The top of the secondary rotating shaft (18) moves through the conical linkage box (19) and is fixedly passed through the corresponding second gear (23). The first gear (22) meshes with multiple sets of second gears (23). A scraper is fixedly installed on the outer wall of the secondary rotating shaft (18).

Images