A granulator hopper structure that is easy to clean
Patent Information
- Application Number
- CN202522402055.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-12
AI Technical Summary
The powdery raw materials adhering to the inner wall of the hopper of existing pellet mills are difficult to clean, resulting in low cleaning efficiency and easy powder contamination, which affects the quality of pellet processing.
A pellet mill hopper structure that is easy to clean is designed. By setting a bracket and a cleaning motor on the outside of the hopper, the cleaning motor drives the cleaning frame and cleaning brush to automatically clean the inner wall of the hopper. Combined with the sliding connection structure of the fixed column and the fixed sleeve, the cleaning frame can be flexibly extended and retracted, ensuring that it does not affect the normal feeding.
It improves the efficiency and thoroughness of cleaning the inner wall of the hopper, avoids the residue of powdery raw materials, and ensures the quality and smoothness of granulation processing.
Smart Images

Figure CN224929607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pellet mill cleaning, specifically a pellet mill hopper structure that is easy to clean. Background Technology
[0002] The powdered raw materials for the granulator are fed through the hopper. To ensure the granulation effect, the moisture content of the powdered raw materials is subject to certain requirements. During the feeding process, the powdered raw materials easily adhere to the side wall of the hopper. After prolonged use, they are prone to caking and deterioration. The existing cleaning method is generally to manually clean the inner wall of the hopper, which is inefficient and ineffective. Furthermore, the depth of the hopper further increases the difficulty of cleaning, resulting in some powdered raw materials remaining inside the hopper. This can easily contaminate the subsequent powder materials and affect the quality of the granulation process. Utility Model Content
[0003] The purpose of this utility model is to provide a pellet mill hopper structure that is easy to clean. It can solve the technical problem that the powdery raw materials adhering to the inner wall of the existing hopper are not easy to clean. The inner wall of the hopper can be cleaned only when needed, without interfering with the normal feeding of the hopper, which greatly improves the cleaning efficiency and avoids the pollution caused by the powdery raw material residue to subsequent production.
[0004] To achieve the above objectives, this utility model employs the following technical solution: A pellet mill hopper structure for easy cleaning includes a hopper body, a support on the outer side of the hopper body, a cleaning motor on the top of the support, a cleaning frame on the output shaft of the cleaning motor, a cleaning brush on the cleaning frame for use with the inner wall of the hopper body, fixed posts and fixed sleeves on both sides of the hopper body, the fixed sleeves being located below the fixed posts, sliding holes on both sides of the support, the fixed posts being slidably connected to the sliding holes, the two sides of the support being slidably connected within the fixed sleeves on both sides, when the fixed posts contact the bottom of the sliding holes, the support separates from the fixed sleeves and can rotate around the fixed posts, and the fixed sleeves are provided with positioning blocks for use with the support.
[0005] Furthermore, the end of the fixed column is provided with a ball, the diameter of which is greater than the width of the sliding hole.
[0006] Furthermore, the bottom of the sliding hole is arc-shaped.
[0007] Furthermore, the bracket has positioning grooves on both sides, the fixed sleeve has a sliding groove inside, the positioning block is slidably connected in the sliding groove along the lateral direction, and the positioning block is movably inserted into the positioning groove.
[0008] Furthermore, the fixed sleeve is provided with an adjusting rod, which passes through the fixed sleeve and is threadedly connected to it. The end of the adjusting rod located inside the fixed sleeve is rotatably connected to the positioning block.
[0009] Furthermore, the hopper body comprises a cylindrical section and a conical section from top to bottom, and the fixing column and fixing sleeve are both disposed on the side of the cylindrical section.
[0010] Furthermore, the cleaning brush is made of polyester fiber or nylon.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model features a support frame on the outer side of the hopper body, a cleaning motor mounted on the support frame, and a cleaning frame mounted on the output shaft of the cleaning motor. The cleaning frame has a cleaning brush that engages with the inner wall of the hopper body. Fixed posts and fixed sleeves are located on both sides of the hopper body. Sliding holes are provided on both sides of the support frame, allowing it to slidably connect with the fixed posts. The two sides of the support frame are slidably connected within the fixed sleeves. When the fixed posts contact the bottom of the sliding holes, the support frame separates from the fixed sleeves and can rotate around the fixed posts. With this structure, during normal feeding, pulling the support frame upwards causes the cleaning frame to rise accordingly until the bottom of the sliding holes contacts the fixed posts, at which point the cleaning frame leaves the interior of the hopper body. Rotate the support to one side of the hopper body, so that the cleaning rack on the support also moves out of the hopper body and rotates to one side of the hopper body. This ensures that there is no interference when feeding from the hopper body, ensuring smooth feeding. When cleaning is required, reverse the operation so that the cleaning rack extends into the hopper body. The position of the support is restricted by the fixing column and fixing sleeve, so that the cleaning motor drives the cleaning rack to rotate. This causes the cleaning brush on the cleaning rack to rotate and clean the inner wall of the hopper body. This is more efficient and thorough for cleaning hopper bodies with a certain depth, avoiding possible contamination from powdery raw material residues and ensuring the quality of granulation processing. 2. The fixed sleeve is equipped with a positioning block for use with the bracket. This structure restricts the position of the bracket after it rotates and slides vertically into the fixed sleeve, preventing the bracket from continuing to slide vertically. This makes the position of the cleaning frame inside the hopper body more stable, allowing the cleaning brush on the cleaning frame to perform a more comprehensive and accurate rotational cleaning of the inner wall of the hopper body, making the cleaning of the inner wall of the hopper body more efficient and thorough. Attached Figure Description
[0012] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.
[0013] Appendix Figure 2 This is a front view of the present invention.
[0014] Appendix Figure 3This is an appendix to this utility model. Figure 2 A cross-sectional view along the AA direction.
[0015] Appendix Figure 4 This is an appendix to this utility model. Figure 3 A magnified view of part B in the middle.
[0016] The labels shown in the attached diagram: 1. Hopper body; 2. Support frame; 3. Cleaning motor; 4. Cleaning frame; 5. Cleaning brush; 6. Fixing column; 7. Fixing sleeve; 8. Sliding hole; 9. Positioning block; 10. Ball; 11. Positioning groove; 12. Sliding groove; 13. Adjusting rod; 14. Cylindrical part; 15. Conical part. Detailed Implementation
[0017] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.
[0018] Reference Figure 1 and Figure 2This utility model describes a granulator hopper structure that is easy to clean. The main structure includes a hopper body 1, into which powdered raw materials are poured. A screw conveyor is connected to the bottom of the hopper body 1 to achieve quantitative feeding of the powdered raw materials. A support 2 is provided on the outside of the hopper body 1. Preferably, the longitudinal section of the support 2 is inverted U-shaped and is fitted onto the outside of the hopper body 1. A cleaning motor 3 is fixed to the top of the support 2 by welding or bolts. Any existing motor structure can be used, specifically the BLH series motor sold by Orient Motor Trading (Shanghai) Co., Ltd. A cleaning frame 4 is fixed to the output shaft of the cleaning motor 3 by welding or bolts. The cleaning frame 4 is provided with a fitting to the inner wall of the hopper body 1. The cleaning brush 5 is used and contacts the inner wall of the hopper body 1. The cleaning motor 3 drives the cleaning frame 4 to rotate, and the cleaning brush 5 on the cleaning frame 4 cleans the inner wall of the hopper body 1, greatly improving the convenience of cleaning. This makes it easy to clean even when the hopper body 1 has a certain depth. Both sides of the hopper body 1 are fixed with fixing posts 6 and fixing sleeves 7 by welding or bolts. The fixing sleeves 7 are located below the fixing posts 6. Both sides of the bracket 2 are provided with sliding holes 8, which penetrate the bracket 2 laterally. The fixing posts 6 are slidably connected to the sliding holes 8. This structure allows the bracket 2 to slide up and down relative to the fixing posts 6, so that when cleaning is needed, the bracket 2 can slide downward relative to the fixing posts 6, making the cleaning brush 5 on the bracket 2 more effective. The cleaning frame 4 moves downwards and extends into the interior of the hopper body 1. During normal feeding, the support 2 slides upwards relative to the fixed column 6, causing the cleaning frame 4 on the support 2 to move upwards and then out of the interior of the hopper body 1, thus not interfering with normal feeding. The two sides of the support 2 are slidably connected to the fixed sleeves 7 on both sides. Since the fixed sleeves 7 are located below the fixed column 6, when the support 2 slides downwards relative to the fixed column 6 a certain distance, the support 2 slides into the fixed sleeves 7. This allows the cleaning frame 4 to enter the interior of the hopper body 1 before the support 2 contacts the fixed sleeves 7. Therefore, when the cleaning frame 4 is performing cleaning operations inside the hopper body 1, the overall structure of the support 2 is restricted by the fixed sleeves 7, thereby improving the stability of the cleaning frame 4 during cleaning. This ensures accurate cleaning of the inner wall of the hopper body 1. When the fixed column 6 contacts the bottom of the sliding hole 8, the bracket 2 separates from the fixed sleeve 7 and can rotate around the fixed column 6. That is, the bracket 2 slides upward relative to the fixed column 6 until the bottom of the sliding hole 8 contacts the fixed column 6. At this time, the bottom of the bracket 2 separates from the fixed sleeve 7, so the bottom of the bracket 2 is no longer restricted by the fixed sleeve 7, allowing the bracket 2 to rotate around the fixed column 6. This causes the cleaning frame 4 on the bracket 2 to move upward and out of the inside of the hopper body 1. Then, as the bracket 2 rotates to one side of the hopper body 1, the cleaning frame 4 detaches from the hopper body 1 and is stored on one side of the hopper body 1 without interfering with the feeding of the hopper body 1. When cleaning is needed, the operation is reversed.The bracket 2 is securely fitted onto the outside of the hopper body 1 under the constraint of the fixing column 6 and the fixing sleeve 7. At this time, the cleaning motor 3 drives the cleaning frame 4 to rotate, and the cleaning brush 5 on the cleaning frame 4 rotates to clean the side wall of the hopper body 1. This makes the use and storage of the cleaning frame 4 more convenient. The fixing sleeve 7 is equipped with a positioning block 9 that works with the bracket 2. This structure ensures that when the cleaning frame 4 is in use, the positioning block 9 fixes the position of the bracket 2, maintaining the bracket 2's firmness relative to the fixing sleeve 7. Furthermore, when the cleaning frame 4 on the bracket 2 rotates, the cleaning brush 5 maintains accurate contact with the inner wall of the hopper body 1, ensuring effective cleaning.
[0019] Preferably, a ball 10 is fixed to the end of the fixing column 6 by welding or integral molding. The diameter of the ball 10 is larger than the width of the sliding hole 8. The ball 10 can block the bracket 2 on the outside of the fixing column 6, preventing the bracket 2 from slipping off the fixing column 6, and further improving the firmness of the connection structure between the bracket 2 and the fixing column 6.
[0020] Preferably, the bottom of the sliding hole 8 is arc-shaped. When the bottom of the sliding hole 8 contacts the fixed post 6 and the bracket 2 rotates around the fixed post 6, the arc shape ensures that the bottom of the sliding hole 8 always remains in contact with the fixed post 6, thereby making the rotation of the bracket 2 relative to the fixed post 6 smoother.
[0021] Preferred, refer to Figure 3 and Figure 4 The bracket 2 has positioning grooves 11 on both sides, which are recessed inward from the side of the bracket 2. The fixing sleeve 7 has a sliding groove 12 inside, and the cross-section of the fixing sleeve 7 is U-shaped. The sliding groove 12 is recessed inward from the inner wall of the U-shape. The positioning block 9 is slidably connected in the sliding groove 12 along the horizontal direction. The positioning block 9 is movably inserted into the positioning groove 11. This structure allows the positioning block 9 to slide along the sliding groove 12 toward the positioning groove 11 when the bracket 2 is positioned, until the positioning block 9 enters the positioning groove 11. Thus, the positioning block 9 is simultaneously located in the sliding groove 12 and the positioning groove 11, thereby vertically positioning and restricting the position of the bracket 2, improving the convenience and stability of the positioning operation of the bracket 2.
[0022] Preferably, the fixed sleeve 7 is provided with an adjusting rod 13, which passes through the fixed sleeve 7 and is threadedly connected to it. The end of the adjusting rod 13 located inside the fixed sleeve 7 is rotatably connected to the positioning block 9 through a bearing. With this structure, the adjusting rod 13 can be rotated from the outside to make the end of the adjusting rod 13 rotate forward under the action of the threaded connection, thereby causing the positioning block 9, which rotates with its end, to slide in the slide groove 12, realizing the sliding drive of the positioning block 9. After moving into place, the positioning block 9 can be kept in the moved position under the action of the threaded connection, making the sliding drive of the positioning block 9 more convenient and stable.
[0023] Preferably, the hopper body 1 includes a cylindrical part 14 and a conical part 15 from top to bottom. The conical part 15 is wider at the top and narrower at the bottom. The fixing column 6 and the fixing sleeve 7 are both fixed to the side of the cylindrical part 14 by welding or bolts. The side of the cylindrical part 14 is flatter in the vertical direction, which is convenient for fixing. It can also accurately position the fixing sleeve 7 directly below the fixing column 6, which is convenient for cooperating with the bracket 2.
[0024] Preferably, the cleaning brush 5 is made of polyester fiber or nylon, which enables more effective cleaning of powdery materials, is less prone to being contaminated by powdery materials, has low cost, and a longer service life.
[0025] Working Principle: This invention features a support 2 on the outer side of the hopper body 1. A cleaning motor 3 is mounted on the support 2, and a cleaning frame 4 is mounted on the output shaft of the cleaning motor 3. The cleaning frame 4 has a cleaning brush 5 that works against the inner wall of the hopper body 1. Fixed posts 6 and fixed sleeves 7 are located on both sides of the hopper body 1. Sliding holes 8 are provided on both sides of the support 2, slidably connected to the fixed posts 6. The two sides of the support 2 are slidably connected within the fixed sleeves 7. When the fixed posts 6 contact the bottom of the sliding holes 8, the support 2 separates from the fixed sleeves 7 and can rotate around the fixed posts 6. During normal feeding, pulling the support 2 upwards causes the cleaning frame 4 to rise until the bottom of the sliding holes 8 contacts the fixed posts 6, at which point the cleaning frame 4 leaves the interior of the hopper body 1. Rotating the support 2 to one side of the hopper body 1 then moves the cleaning frame 4 from the hopper body 1 and rotates it to the side of the hopper body 1, ensuring smooth feeding without interference. When cleaning is required, the operation is reversed, allowing the cleaning frame 4 to extend into the interior of the hopper body 1. The fixed column 6 and fixed sleeve 7 restrict the position of the support 2, causing the cleaning motor 3 to drive the cleaning frame 4 to rotate. This allows the cleaning brush 5 on the cleaning frame 4 to rotate and clean the inner wall of the hopper body 1. This method is more efficient and thorough for cleaning hopper bodies 1 with a certain depth, avoiding potential contamination from powdery raw material residue and ensuring the quality of granulation processing. The fixed sleeve 7 has a positioning block 9 that works with the support 2. This structure restricts the position of the support 2 after it rotates and slides vertically into the fixed sleeve 7, preventing further vertical sliding. This makes the cleaning frame 4 more stable inside the hopper body 1, allowing the cleaning brush 5 on the cleaning frame 4 to perform a more comprehensive and accurate rotational cleaning of the inner wall of the hopper body 1, resulting in more efficient and thorough cleaning.
Claims
1. A pellet mill hopper structure that is easy to clean, comprising a hopper body (1), characterized in that: The hopper body (1) is provided with a bracket (2) on the outside. The top of the bracket (2) is provided with a cleaning motor (3). The output shaft of the cleaning motor (3) is provided with a cleaning frame (4). The cleaning frame (4) is provided with a cleaning brush (5) for use with the inner wall of the hopper body (1). The hopper body (1) is provided with a fixed column (6) and a fixed sleeve (7) on both sides. The fixed sleeve (7) is located below the fixed column (6). The bracket (2) is provided with a sliding hole (8) on both sides. The fixed column (6) is slidably connected to the sliding hole (8). The two sides of the bracket (2) are slidably connected in the fixed sleeve (7) on both sides. When the fixed column (6) contacts the bottom of the sliding hole (8), the bracket (2) separates from the fixed sleeve (7) and can rotate around the fixed column (6). The fixed sleeve (7) is provided with a positioning block (9) for use with the bracket (2).
2. The pellet mill hopper structure for easy cleaning according to claim 1, characterized in that: The end of the fixed column (6) is provided with a ball (10), the diameter of which is greater than the width of the sliding hole (8).
3. The pellet mill hopper structure for easy cleaning according to claim 1, characterized in that: The bottom of the sliding hole (8) is arc-shaped.
4. The pellet mill hopper structure for easy cleaning according to claim 1, characterized in that: The bracket (2) has positioning grooves (11) on both sides, and the fixed sleeve (7) has a sliding groove (12) inside. The positioning block (9) is slidably connected in the sliding groove (12) along the lateral direction, and the positioning block (9) is movably inserted into the positioning groove (11).
5. The pellet mill hopper structure for easy cleaning according to claim 4, characterized in that: The fixed sleeve (7) is provided with an adjusting rod (13), which passes through the fixed sleeve (7) and is threadedly connected to it. The end of the adjusting rod (13) located inside the fixed sleeve (7) is rotatably connected to the positioning block (9).
6. The pellet mill hopper structure for easy cleaning according to claim 1, characterized in that: The hopper body (1) includes a cylindrical part (14) and a conical part (15) from top to bottom. The fixing column (6) and the fixing sleeve (7) are both arranged on the side of the cylindrical part (14).
7. The pellet mill hopper structure for easy cleaning according to claim 1, characterized in that: The cleaning brush (5) is made of polyester fiber or nylon.
