Multistage screening device for battery-grade ammonium dihydrogen phosphate production

Abstract

The utility model relates to the production technology field of ammonium dihydrogen phosphate, disclose a multistage screening device for battery grade ammonium dihydrogen phosphate production, including base, spring, the spring fixedly connected in the top four around of base, bottom frame and screening frame, the bottom frame fixedly connected at the top of multiple spring, screening frame installs the top of bottom frame, the quantity of screening frame is three between through bolt connection, sieve plate no.

Description

Technical Field

[0001] This utility model relates to the field of ammonium dihydrogen phosphate production technology, and in particular to a multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate. Background Technology

[0002] Battery-grade ammonium dihydrogen phosphate is a high-purity ammonium phosphate salt, commonly used as a cathode material in lithium battery production or as a precursor for certain chemicals. In battery production, ammonium dihydrogen phosphate is one of the synthesis precursors for materials such as lithium iron phosphate. The production process of battery-grade ammonium dihydrogen phosphate requires the use of multi-stage screening equipment to screen, remove metal impurities, and control particle size to ensure that its quality meets strict industrial standards.

[0003] When using a multi-stage screening device, the material first enters the screening device evenly through the top feed inlet. Large particles are removed by the first layer of screen, and the target particle size product is then screened through the middle layer. Fine powder passes through the bottom screen and is introduced into different collection containers, thus completing the multi-stage screening operation.

[0004] Although existing multi-stage screening devices can perform screening operations on battery-grade ammonium dihydrogen phosphate, the operation of replacing damaged screens is too cumbersome and time-consuming, thus reducing the working efficiency of the multi-stage screening devices. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate, aiming to improve the problem that the operation of replacing damaged screens in the prior art is too cumbersome and time-consuming, thus reducing the working efficiency of the multi-stage screening device.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate includes:

[0008] Base;

[0009] A spring, which is fixedly connected to the top periphery of the base;

[0010] The bottom frame and the screening frame are provided. The bottom frame is fixedly connected to the top of the plurality of springs, and the screening frame is installed on the top of the bottom frame. The number of screening frames is three, and they are connected by bolts.

[0011] Screen plate one, screen plate two, and screen plate three, wherein screen plate one is installed inside the top screening frame, screen plate two is installed inside the middle screening frame, and screen plate three is installed inside the bottom screening frame;

[0012] Mounting blocks and protrusions, wherein the mounting blocks are fixedly connected to the outer sides of the first sieve plate, the second sieve plate, and the third sieve plate, and the protrusions are fixedly connected to the outer sides of the mounting blocks;

[0013] The feed inlet is fixedly connected to the top of the top screening frame;

[0014] And a shielding component for shielding the feed inlet.

[0015] Furthermore, the shielding assembly includes two fixing blocks, which are fixedly connected to the outer sides of the feed inlet. Each of the two fixing blocks is fixedly connected to a fixing rod, and each of the two fixing rods is slidably connected to a guide block. A baffle is fixedly connected to the middle of the two guide blocks, and a handle is fixedly connected to the outside of the baffle.

[0016] Furthermore, mounting slots are provided on both sides of the interior of the three screening frames, and multiple mounting blocks and multiple protrusions are inserted into the multiple mounting slots.

[0017] Furthermore, the first sieve plate, the second sieve plate, and the third sieve plate are respectively provided with sieve holes of different diameters, and the diameter of the sieve holes decreases sequentially among the three.

[0018] Furthermore, the baffle is made of engineering plastic.

[0019] Furthermore, a through hole is provided on the outside of the feed inlet, and the baffle is slidably connected inside the through hole.

[0020] Furthermore, a mounting bracket is fixedly connected to the bottom of the base frame, and a vibration motor is fixedly connected inside the mounting bracket.

[0021] Furthermore, mounting holes are provided around the outer perimeter of the base, a guide plate is fixedly connected inside the bottom frame, a discharge port one is fixedly connected to the outside of the bottom frame, and a discharge port two is fixedly connected to the outside of each of the three screening frames.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when replacing the screen, firstly, remove the bolts that fix the screening frame, and move the screen along with the mounting block and protrusion upwards until the mounting block and protrusion are disengaged from the mounting groove. When installing the new screen, align the mounting block and protrusion and insert them into the mounting groove to ensure that they are fixed in place. Finally, reinstall the three screening frames and fix the bolts. This design makes the screen replacement operation simple and quick, and improves work efficiency.

[0024] 2. In this utility model, when feeding materials, the push handle drives the baffle to move under the cooperation of the guide block and the fixed rod. When the guide block moves to the outermost position, the baffle opens and the feed inlet is opened. After pouring ammonium dihydrogen phosphate into the screening frame, the reverse operation is performed to reset the baffle and block the feed inlet. Finally, the screening device is started to complete multi-stage screening. This structure facilitates the control of the opening and closing of the feed inlet, effectively prevents dust leakage, and improves environmental cleanliness. Attached Figure Description

[0025] Figure 1 This is a perspective view of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the spring structure of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the unfolded structure of the baffle in the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the screening frame structure of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the vibrating motor structure of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model.

[0030] Figure 6 This is a schematic diagram showing the disassembled structure of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model.

[0031] Figure 7 This is a schematic diagram of the disassembled coarse screen plate structure of the multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate proposed in this utility model.

[0032] Figure 8 for Figure 7 An enlarged view of the structure at point A in the image.

[0033] Legend:

[0034] 1. Base; 2. Mounting hole; 3. Spring; 4. Bottom frame; 5. Screening frame; 6. Feed inlet; 7. Discharge port one; 8. Discharge port two; 9. Screen plate one; 10. Mounting block; 11. Protrusion; 12. Mounting groove; 13. Fixing block; 14. Fixing rod; 15. Baffle; 16. Handle; 17. Guide block; 18. Through hole; 19. Guide plate; 20. Screen plate two; 21. Screen plate three; 22. Mounting frame; 23. Vibration motor. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Reference Figures 1-7 This utility model provides an embodiment of a multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate, comprising: a base 1; springs 3 fixedly connected to the top periphery of the base 1; a bottom frame 4 and screening frames 5, the bottom frame 4 fixedly connected to the top of multiple springs 3, the screening frames 5 installed on the top of the bottom frame 4, and three screening frames 5 connected by bolts; a first screening plate 9, a second screening plate 20, and a third screening plate 21, the first screening plate 9 installed inside the top screening frame 5, the second screening plate 20 installed inside the middle screening frame 5, and the third screening plate 21 installed inside the bottom screening frame 5; mounting blocks 10 and protrusions 11, the mounting blocks 10 fixedly connected to the outer sides of the first screening plate 9, the second screening plate 20, and the third screening plate 21, and the protrusions 11 fixedly connected to the outer sides of the third screening frame 5; and mounting blocks 10 and protrusions 11. The mounting blocks 10 have external sides; a feed inlet 6, which is fixedly connected to the top of the top screening frame 5; and a shielding component, which is used to shield the feed inlet 6. The three screening frames 5 have mounting grooves 12 on both sides inside. Multiple mounting blocks 10 and multiple protrusions 11 are inserted into the mounting grooves 12. Screen plate 1 9, screen plate 20 and screen plate 3 21 are respectively provided with screen holes of different diameters, and the screen hole diameters of the three decrease sequentially. The bottom frame 4 is fixedly connected to a mounting bracket 22, and a vibration motor 23 is fixedly connected inside the mounting bracket 22. Mounting holes 2 are opened on all four sides of the base 1. A guide plate 19 is fixedly connected inside the bottom frame 4. A discharge port 1 7 is fixedly connected to the outside of the bottom frame 4. A discharge port 2 8 is fixedly connected to the outside of the three screening frames 5.

[0037] Specifically, when it is necessary to replace the screen, firstly, the operator uses tools to remove several bolts used to fix the three screening frames 5 one by one, so that the screening frames 5 can be separated from the main body. Then, the screen located inside each screening frame 5 is moved upward in the vertical direction. At this time, the mounting blocks 10 and protrusions 11 pre-installed on both sides of the screen will slide upward together along the mounting grooves 12 on both sides inside the screening frame 5. As the screen moves upward as a whole, when the mounting blocks 10 and protrusions 11 are completely detached from the internal structure of the mounting grooves 12, the screen assembly can be completely removed, completing the disassembly of the old screen. When installing a new screen, first align the mounting blocks 10 and protrusions 11 on both sides of the new screen assembly with the mounting grooves 12 opened inside the corresponding screening frames 5, and push them downward along the sliding trajectory of the mounting grooves 12, so that the mounting blocks 10 and protrusions 11 are fully installed. 0 and protrusion 11 are gradually inserted into the mounting groove 12 until they are positioned and fixed, ensuring that the screen is stably embedded inside the screening frame 5. After the screen installation is completed, the three screening frames 5 are reset one by one and fixed to the device frame with bolts. Through the above structural design and operation steps, the screen can be easily replaced, the operation is simple, convenient, time-saving and labor-saving, thereby improving the working efficiency of the multi-stage screening device. During screening, firstly, the material enters the screening device evenly through the upper feed port 6. Then, the vibration motor 23 is started, and the vibration motor 23 vibrates the bottom frame 4 and the three screening frames 5. During vibration, ammonium dihydrogen phosphate passes through the first layer of screen to remove large particles, and then passes through the middle layer to screen out the target particle size product. Fine powder passes through the bottom screen and is introduced into different collection containers, thus completing the multi-stage screening operation.

[0038] Reference Figures 3-8 The shielding assembly includes two fixing blocks 13, which are fixedly connected to the outer sides of the feed inlet 6. Each fixing block 13 is fixedly connected to a fixing rod 14, and each fixing rod 14 is slidably connected to a guide block 17. A baffle 15 is fixedly connected to the middle of the two guide blocks 17, and a handle 16 is fixedly connected to the outside of the baffle 15. The handle 16 facilitates the use of the operator. The baffle 15 is made of engineering plastic, which is lighter than metal, greatly reducing the installation strength and operating burden, making it easier and less strenuous to disassemble, clean or replace the baffle 15. A through hole 18 is provided on the outside of the feed inlet 6, and the baffle 15 is slidably connected inside the through hole 18, which facilitates the movement of the baffle 15.

[0039] Specifically, when feeding ammonium dihydrogen phosphate raw material into the screening device, the operator first holds the handle 16 and pushes it to move the baffle 15 along the outside of the two fixed rods 14 under the guidance of the two guide blocks 17. When the two guide blocks 17 move to the outermost position of the two fixed rods 14, the baffle 15 completes its displacement and completely releases its obstruction of the feed inlet 6. At this time, the feed inlet 6 is open, allowing material to be fed in. Subsequently, the pretreated ammonium dihydrogen phosphate raw material is slowly and evenly fed in. The material is evenly fed into the screening frame 5 located inside the device to facilitate subsequent screening operations. After the material is fed, the operator moves the handle 16 in the opposite direction, causing the baffle 15 to slide inward again under the guidance of the guide block 17 and the fixed rod 14, so that the baffle 15 covers the feed inlet 6 again, thus completing the second covering of the feed inlet 6. This achieves the covering of the feed inlet 6 before and after feeding, preventing the raw material dust from spilling out during the screening process, thereby improving the cleanliness of the working environment and air quality.

[0040] Working principle: When the screen needs to be replaced, firstly, remove the bolts fixing the three screening frames 5. Then, move the screen inside each screening frame 5 upwards. The movement of the screen moves the mounting blocks 10 and protrusions 11 fixed on both sides of the outside into the mounting groove 12, so that the mounting blocks 10 and protrusions 11 are moved out of the mounting groove 12. During installation, align the mounting blocks 10 and protrusions 11 fixed on both sides of the outside of the new screen with the mounting grooves 12 opened on both sides of the inside of the screening frame 5. Then, insert the mounting blocks 10 and protrusions 11 into the mounting groove 12 to complete the replacement of the screen. Finally, fix the three screening frames 5 with bolts. This makes it easy to replace the screen, and the operation is simple, convenient, time-saving and labor-saving, thereby improving the working efficiency of the multi-stage screening device.

[0041] When adding ammonium dihydrogen phosphate into the screening device, firstly, the moving handle 16, with the baffle 15 in cooperation with the two guide blocks 17, moves outside the two fixed rods 14. When the two guide blocks 17 move to the outermost part of the two fixed rods 14, the baffle 15 releases its obstruction of the feed inlet 6. Then, the ammonium dihydrogen phosphate is placed into the screening frame 5. After placement, the operation is reversed so that the baffle 15 obstructs the feed inlet 6. Finally, the screening device is started again to complete the multi-stage screening operation of ammonium dihydrogen phosphate. This allows for easy obstruction of the feed inlet 6 of the screening device during screening, effectively preventing dust leakage during screening and thus improving the air quality of the surrounding environment.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate, characterized in that, include: Base (1); Spring (3), which is fixedly connected to the top periphery of the base (1); The bottom frame (4) and the screening frame (5) are fixedly connected to the top of the plurality of springs (3), and the screening frame (5) is installed on the top of the bottom frame (4). The number of screening frames (5) is three and they are connected by bolts. Screen plate one (9), screen plate two (20) and screen plate three (21), wherein screen plate one (9) is installed inside the top screening frame (5), screen plate two (20) is installed inside the middle screening frame (5) and screen plate three (21) is installed inside the bottom screening frame (5); Mounting block (10) and protrusion (11), wherein the mounting block (10) is fixedly connected to the outer sides of the first sieve plate (9), the second sieve plate (20) and the third sieve plate (21), and the protrusion (11) is fixedly connected to the outer sides of the mounting block (10); Feed inlet (6), which is fixedly connected to the top of the top screening frame (5); and a shielding component for shielding the feed inlet (6).

2. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 1, characterized in that: The shielding assembly includes two fixing blocks (13), which are fixedly connected to the outer sides of the feed inlet (6). Each of the two fixing blocks (13) is fixedly connected to a fixing rod (14), and each of the two fixing rods (14) is slidably connected to a guide block (17). A baffle (15) is fixedly connected to the middle of the two guide blocks (17), and a handle (16) is fixedly connected to the outside of the baffle (15).

3. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 1, characterized in that: The three screening frames (5) have mounting grooves (12) on both sides inside, and multiple mounting blocks (10) and multiple protrusions (11) are inserted into the multiple mounting grooves (12).

4. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 1, characterized in that: The first sieve plate (9), the second sieve plate (20), and the third sieve plate (21) are respectively provided with sieve holes of different diameters, and the diameter of the sieve holes decreases sequentially among the three.

5. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 2, characterized in that: The baffle (15) is made of engineering plastic.

6. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 2, characterized in that: The feed inlet (6) has a through hole (18) on its outside, and the baffle (15) is slidably connected inside the through hole (18).

7. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 1, characterized in that: The bottom frame (4) is fixedly connected to a mounting bracket (22), and a vibration motor (23) is fixedly connected inside the mounting bracket (22).

8. The multi-stage screening device for the production of battery-grade ammonium dihydrogen phosphate according to claim 1, characterized in that: The base (1) has mounting holes (2) on all four sides. The bottom frame (4) is fixedly connected to a guide plate (19). The bottom frame (4) is fixedly connected to a discharge port (7). The three screening frames (5) are all fixedly connected to a discharge port (8).

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