On-line adding device for grinding medium of sand mill

Abstract

The utility model belongs to the technical field of sand mills, and particularly relates to a sand mill grinding medium on-line adding device which comprises a grinding ball refilling tank body, a feeding hopper is installed on the top of the grinding ball refilling tank body, and a feeding pipe is installed on one side of the grinding ball refilling tank body and close to the top end of the grinding ball refilling tank body. A discharging pipe is mounted at the bottom of the grinding ball refilling tank body, a filter screen is mounted in the feeding hopper, a clamping structure is mounted in the feeding hopper and used for mounting the filter screen, the clamping structure comprises a fixing batten in the feeding hopper, a mounting piece is fixed in the filter screen, a mounting ring is fixed to the end of the mounting piece, and a clamping groove is formed in the fixing batten. A fixed arc strip is fixed on the mounting ring, and the mounting ring and the fixed arc strip are located at the central position of the filter screen. According to the utility model, the original function of adding the grinding medium on line is reserved, and a quick disassembly and replacement structure of the filter screen is additionally arranged, so that the filter screen is more convenient to maintain, and the operation efficiency and the reliability of the sand mill are further improved.

Description

Technical Field

[0001] This utility model belongs to the field of sand mill technology, specifically relating to an online adding device for sand mill grinding media. Background Technology

[0002] In modern industrial production, sand mills are widely used as highly efficient grinding equipment in industries such as coatings, inks, pigments, and pharmaceuticals. To ensure grinding efficiency and product quality, the size, material, and filling amount of the grinding media (such as grinding balls) need to be strictly controlled.

[0003] Traditional sand mills typically require the machine to be stopped during operation if grinding media need to be added or replaced. This not only reduces production efficiency but also increases equipment failure rate and maintenance costs.

[0004] To address this issue, existing technologies have proposed online grinding ball adding devices for sand mills, such as the online grinding ball adding device for sand mills proposed in patent publication number CN213914112U. This device, by setting up structures such as a filter screen, allows grinding balls to be added online without turning off the mill, which significantly improves production efficiency and reduces the failure rate.

[0005] However, after the device has been running for a long time, the filter screen may need to be replaced or cleaned due to wear, clogging or other reasons. In the existing technology, the process of removing and replacing the filter screen is not convenient, which may lead to time-consuming and complicated maintenance work and affect the continuity of production.

[0006] Therefore, this utility model addresses the problems existing in the prior art by proposing an improved online grinding media addition device for sand mills. Utility Model Content

[0007] The purpose of this invention is to provide an online grinding media adding device for sand mills. It not only retains the original function of adding grinding media online, but also adds a quick disassembly and replacement structure for the filter screen, making filter screen maintenance more convenient, thereby further improving the operating efficiency and reliability of the sand mill.

[0008] The specific technical solution adopted by this utility model is as follows:

[0009] The online grinding media addition device for a sand mill includes a grinding ball refill tank, a feeding hopper installed on the top of the grinding ball refill tank, a feed pipe installed on one side of the grinding ball refill tank near the top, and a discharge pipe installed at the bottom of the grinding ball refill tank.

[0010] The feed hopper is equipped with a filter screen and a locking structure for installing the filter screen.

[0011] The locking structure includes a fixing strip inside the feeding hopper, an installation piece fixed inside the filter screen, an installation ring fixed at the end of the installation piece, and a fixing arc strip fixed on the installation ring. The installation ring and the fixing arc strip are located at the center of the filter screen, and a fixing piece is fixed at the top of the fixing strip and inside the installation ring and the fixing arc strip.

[0012] A fixing block is fixed to the outer side of the fixing plate. A rotating ring is rotatably connected to the top of the mounting ring and the fixing arc strip. An inlet groove is provided on the inner wall of the rotating ring at a position corresponding to the fixing block. A slot is also provided on the inner wall of the rotating ring. An arc-shaped groove is provided on the inner wall of the feeding hopper between the slot and the inlet groove.

[0013] The technical effects achieved by this utility model are as follows:

[0014] This invention not only retains the original function of adding grinding media online, but also adds a quick disassembly and replacement structure for the filter screen, making filter screen maintenance more convenient, thereby further improving the operating efficiency and reliability of the sand mill. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure between the feeding hopper, the filter screen, and the rotating ring in this utility model;

[0017] Figure 3 This is a schematic diagram of the structure between the fixing strip, the flexible pad, and the fixing block in this utility model;

[0018] Figure 4 This is a schematic diagram of the structure between the rotating ring, the inlet groove, and the slot in this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Grinding balls refill the tank; 2. Feed hopper; 3. Feed pipe; 4. Discharge pipe; 5. Filter screen; 6. Mounting plate; 7. Mounting ring; 8. Fixing arc strip; 9. Fixing strip; 10. Fixing plate; 11. Leakage hole; 12. Rotating ring; 13. Fixing block; 14. Inlet groove; 15. Slot; 16. Arc-shaped groove; 17. Flexible pad; 18. Pad block; 19. First magnet; 20. Second magnet. Detailed Implementation

[0021] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0022] like Figures 1-4 As shown, the online grinding media addition device for a sand mill includes a grinding ball refill tank 1. A feeding hopper 2 is installed on the top of the grinding ball refill tank 1. A feed pipe 3 is installed on one side of the grinding ball refill tank 1 near the top. A discharge pipe 4 is installed at the bottom of the grinding ball refill tank 1. The feed pipe 3 is a three-way pipe with two ball valves, one for water intake and the other for air intake. It can fill water to the level of the feeding hopper 2 before adding grinding balls, which can prevent the grinding balls from escaping. The combination of water and air is indispensable, which allows the grinding balls to enter the grinding ball refill tank 1, realizing the online addition of grinding balls without shutting down the mill. This helps to reduce the failure rate of the mill and ensure production efficiency. For details of this principle, please refer to the online grinding ball addition device for a sand mill proposed in publication number CN213914112U.

[0023] The inside of the feeding hopper 2 is equipped with a filter screen 5 to prevent grinding balls exceeding the design size from entering the sand mill. The feeding hopper 2 is also equipped with a locking structure for installing the filter screen 5.

[0024] See attached document Figures 2-4 The engaging structure includes a fixing strip 9 inside the feeding hopper 2, see attached diagram. Figure 3 The fixed plate 9 has evenly spaced drainage holes 11 inside. Through the drainage holes 11, water can also flow through the drainage holes 11 and overflow the fixed plate 9, and then reach the top of the fixed plate 9. The filter screen 5 has a mounting plate 6 fixed inside. The end of the mounting plate 6 is fixed with a mounting ring 7, and a fixing arc strip 8 is fixed on the mounting ring 7. There is a certain gap between the bottom of the fixing arc strip 8 and the mounting ring 7. Therefore, when the mounting plate 6 and the mounting ring 7 are placed on the fixed plate 9, the fixing arc strip 8 and the fixed plate 9 can be prevented from getting stuck. The mounting ring 7 and the fixing arc strip 8 are located at the center of the filter screen 5. A fixing plate 10 is fixed at the top of the fixed plate 9 and inside the mounting ring 7 and the fixing arc strip 8.

[0025] A fixing block 13 is fixed to the outer side of the fixing plate 10. A rotating ring 12 is rotatably connected to the top of the mounting ring 7 and the fixing arc strip 8. An inlet groove 14 is provided on the inner wall of the rotating ring 12 at a position corresponding to the fixing block 13. A slot 15 is also provided on the inner wall of the rotating ring 12. Furthermore, a first magnet 19 is fixed to the end of the fixing block 13 near the hopper 2, and a second magnet 20 corresponding to the first magnet 19 is provided in the slot 15. By setting the first magnet 19, after the first magnet 19 rotates with the fixing block 13 into the slot 15, the first magnet 19 and the second magnet 20 can attract each other. The magnetic poles of the ends of the second magnet 20 and the first magnet 19 that are close to each other are set in opposite directions. If the direction of the second magnet 20 near the first magnet 19 is set as the N pole, then the end of the first magnet 19 near the second magnet 20 is set as the S pole. The inner wall of the hopper 2 and the slot An arc-shaped groove 16 is provided between the slot 15 and the inlet groove 14. The depth of the arc-shaped groove 16 is less than the depth of the slot 15 and the inlet groove 14, while the slot 15 and the inlet groove 14 have the same depth. Furthermore, the fixing block 13 is made of flexible material. This arrangement allows the fixing block 13 to move from the inlet groove 14 to the slot 15 across the arc-shaped groove 16. The material can be any of the easily deformable materials such as rubber or silicone. A flexible pad 17 is fixed on the inner wall of the rotating ring 12 at the position corresponding to the arc-shaped groove 16. Both ends of the flexible pad 17 extend into the inlet groove 14 and the slot 15 and are provided with pad blocks 18. The flexible pad 17 can block the fixing block 13, so that the slot 15 on the rotating ring 12 and the fixing block 13 are locked together and cannot be easily rotated. The pad block 18 can further block the fixing block 13.

[0026] When installing the filter screen 5, align the mounting plate 6 and mounting ring 7 on the filter screen 5 with the fixing strip 9 and fixing plate 10, and move them down until the mounting plate 6 is located outside the fixing strip 9 and the mounting ring 7 is located outside the fixing plate 10. The inlet groove 14 on the rotating ring 12 is located outside the fixing block 13. At this time, rotate the rotating ring 12 so that the rotating ring 12 rotates relative to the fixing block 13 until the fixing block 13 rotates through the arc groove 16 into the slot 15. The slot 15 locks the fixing block 13, thereby restricting the movement of the filter screen 5. When the filter screen 5 needs to be replaced, rotate the rotating ring 12 in the opposite direction so that the fixing block 13 returns to the inlet groove 14. Pull the filter screen 5 upward to remove the filter screen 5.

[0027] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. An online grinding media adding device for a sand mill, comprising a grinding ball refill tank (1), characterized in that: A feeding hopper (2) is installed on the top of the grinding ball refill tank (1), a feeding pipe (3) is installed on one side of the grinding ball refill tank (1) near the top, and a discharge pipe (4) is installed at the bottom of the grinding ball refill tank (1). The feed hopper (2) is equipped with a filter screen (5) and a locking structure is installed inside the feed hopper (2) for installing the filter screen (5). The locking structure includes a fixing strip (9) inside the feeding hopper (2), an mounting piece (6) fixed inside the filter screen (5), a mounting ring (7) fixed at the end of the mounting piece (6), and a fixing arc strip (8) fixed on the mounting ring (7). The mounting ring (7) and the fixing arc strip (8) are located at the center of the filter screen (5). A fixing piece (10) is fixed on the top of the fixing strip (9) and inside the mounting ring (7) and the fixing arc strip (8). A fixing block (13) is fixed to the outside of the fixing plate (10). A rotating ring (12) is rotatably connected to the top of the mounting ring (7) and the fixing arc strip (8). An inlet groove (14) is provided on the inner wall of the rotating ring (12) at the position corresponding to the fixing block (13). A slot (15) is also provided on the inner wall of the rotating ring (12). An arc-shaped groove (16) is provided on the inner wall of the feeding hopper (2) between the slot (15) and the inlet groove (14).

2. The online grinding media adding device for a sand mill according to claim 1, characterized in that: The interior of the fixing strip (9) is uniformly provided with leakage holes (11).

3. The online grinding media adding device for a sand mill according to claim 1, characterized in that: A flexible pad (17) is fixed on the inner wall of the rotating ring (12) at a position corresponding to the arc-shaped groove (16), and both ends of the flexible pad (17) extend into the inlet groove (14) and the card slot (15) and are provided with pad blocks (18).

4. The online grinding media adding device for a sand mill according to claim 1, characterized in that: The fixing block (13) is fixed with a first magnet (19) near the end of the feeding hopper (2), and a second magnet (20) corresponding to the first magnet (19) is provided in the slot (15).

5. The online grinding media adding device for a sand mill according to claim 1, characterized in that: The fixing block (13) is made of flexible material.

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