Horizontal sand mill with reduced material waste
By designing a scraping device composed of scrapers in a horizontal sand mill, magnetic coupling is used to drive the scraping of materials adhering to the inner wall of the mill cylinder, thus solving the problem of material waste and improving the efficiency and ease of maintenance of the equipment.
Patent Information
- Application Number
- CN202522113347.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-30
AI Technical Summary
In traditional horizontal sand mills, materials tend to adhere to the inner wall of the mill cylinder during the grinding process, resulting in significant material waste and reduced grinding efficiency.
The scraper consists of an arc plate, a fixed shaft, and a scraper blade. The scraper is driven to rotate inside the grinding cylinder by a drive assembly. Magnetic coupling is used to scrape off the attached material, reducing material waste.
It effectively scrapes away material adhering to the inner wall of the grinding cylinder, reduces material waste, lowers equipment complexity, and improves maintenance convenience.
Smart Images

Figure CN224672795U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sand mill technology, specifically a horizontal sand mill that reduces material waste. Background Technology
[0002] In numerous industrial production sectors, especially in coatings, inks, dyes, and pharmaceuticals, sand mills are widely used as a key grinding and dispersing device. Horizontal sand mills, with their unique structural advantages such as large grinding volume and excellent material circulation, excel in processing large quantities of materials, making them the preferred equipment in many production scenarios.
[0003] However, in actual production and use, traditional horizontal sand mills have a prominent problem—serious material waste. During the grinding process, due to the viscosity of the material and the interaction between the grinding media and the material, some material adheres to the inner wall of the grinding cylinder. Over time, this adhered material gradually accumulates, not only occupying the effective grinding space inside the grinding cylinder and reducing grinding efficiency, but also causing a large amount of material waste. Therefore, a horizontal sand mill designed to reduce material waste is proposed to solve the above problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a horizontal sand mill that reduces material waste, thus solving the problems mentioned in the background section.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A horizontal sand mill for reducing material waste includes a sand mill body, a grinding cylinder is provided on the right side of the sand mill body, a scraper is provided on the inner side of the grinding cylinder, and a drive assembly for driving the scraper is provided on the top of the grinding cylinder. The drive assembly includes a support plate fixedly connected to the top of the grinding cylinder, a rotating rod rotatably connected to the right side of the support plate, a transmission gear fixedly connected to the outer side of the rotating rod, a driven gear meshing at the bottom of the transmission gear, a rotating ring fixedly connected to the inner side of the center of the driven gear, and a first magnet fixedly connected to both the top and bottom walls of the rotating ring.
[0006] Furthermore, the grinding cylinder is located inside the rotating ring, and a rotating frame is rotatably connected to the outside of the rotating ring, with the rotating frame fixedly connected to the outside of the grinding cylinder.
[0007] Furthermore, the scraper is composed of two arc plates, four fixed shafts, and two scraper blades.
[0008] Furthermore, the two arc plates are respectively arranged on the upper and lower sides, and the four fixed shafts are all fixedly connected between the opposite sides of the upper and lower arc plates, and the two scrapers are respectively fixedly connected to the opposite sides of the upper and lower arc plates.
[0009] Furthermore, a second magnet is fixedly connected to each of the two arc plates on their opposite sides, and the second magnet has a different magnetic polarity than the first magnet.
[0010] Furthermore, a handwheel is fixedly connected to the right end of the rotating rod, and the size of the transmission gear is smaller than the size of the driven gear.
[0011] Furthermore, the inner side of the grinding cylinder is provided with helical blades, and the helical blades are located between the inner top and bottom walls of the scraper.
[0012] Compared with the prior art, this utility model provides a horizontal sand mill that reduces material waste, and has the following beneficial effects: This horizontal sand mill, designed to reduce material waste, features a scraper consisting of an arc plate, a fixed shaft, and a scraper blade. The scraper blade fits tightly against the inner wall of the mill cylinder. Under the action of the drive assembly, the scraper blade rotates inside the mill cylinder, thoroughly scraping off the material adhering to the inner wall of the mill cylinder. This avoids material residue and accumulation, reducing material waste. Furthermore, the use of magnetic coupling as the drive method reduces mechanical connection parts, lowers the complexity of the equipment, and makes maintenance more convenient and efficient. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of the structure of this utility model; Figure 2 This is a front view of the structure of this utility model; Figure 3 This is a perspective view of the arc plate, fixed shaft, and scraper in the structure of this utility model.
[0014] In the diagram: 1. Sand mill body; 101. Grinding cylinder; 2. Scraper; 201. Arc plate; 202. Fixed shaft; 203. Scraper; 3. Support plate; 4. Rotating rod; 401. Handwheel; 5. Transmission gear; 6. Driven gear; 7. Rotating ring; 8. First magnet; 9. Rotating frame; 10. Second magnet. Detailed Implementation
[0015] 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.
[0016] Please see Figures 1 to 3 This embodiment of a horizontal sand mill for reducing material waste includes a sand mill body 1, a grinding cylinder 101 is provided on the right side of the sand mill body 1, a scraper 2 is provided on the inner side of the grinding cylinder 101, and a drive assembly for driving the scraper 2 is provided on the top of the grinding cylinder 101.
[0017] Please see Figure 1 In this embodiment, the driving assembly includes a support plate 3 fixedly connected to the top of the grinding cylinder 101. A rotating rod 4 is rotatably connected to the right side of the support plate 3. A transmission gear 5 is fixedly connected to the outer side of the rotating rod 4. A driven gear 6 meshes with the bottom of the transmission gear 5. A rotating ring 7 is fixedly connected to the inner side of the center of the driven gear 6. A first magnet 8 is fixedly connected to both the top and bottom walls of the rotating ring 7.
[0018] Specifically, the grinding cylinder 101 is located inside the rotating ring 7, and the rotating frame 9 is rotatably connected to the outside of the rotating ring 7. The rotating frame 9 is fixedly connected to the outside of the grinding cylinder 101.
[0019] Specifically, the scraper 2 is composed of two arc plates 201, four fixed shafts 202, and two scraper blades 203.
[0020] It should be noted that the scraper 2 consists of an arc plate 201, a fixed shaft 202 and a scraper 203. Its structural design allows the scraper 203 to fit tightly against the inner wall of the grinding cylinder 101, ensuring that residual materials are effectively scraped off during rotation.
[0021] Specifically, two arc plates 201 are arranged on the upper and lower sides respectively, and four fixed shafts 202 are fixedly connected between the opposite sides of the upper and lower arc plates 201, and two scrapers 203 are fixedly connected to the opposite sides of the upper and lower arc plates 201 respectively.
[0022] It should be noted that the fixed shaft 202 not only connects the upper and lower arc plates 201, but also provides additional support points to keep the scraper 2 stable when rotating at high speed.
[0023] Specifically, a second magnet 10 is fixedly connected to the opposite side of each of the two arc plates 201, and the magnetic polarity of the second magnet 10 is different from that of the first magnet 8.
[0024] It should be noted that the drive assembly realizes the rotational movement of the scraper 2 through gear transmission and magnetic coupling, avoiding direct mechanical connection, reducing component wear, and improving the reliability and maintenance convenience of the equipment.
[0025] Specifically, a handwheel 401 is fixedly connected to the right end of the rotating rod 4, and the size of the transmission gear 5 is smaller than the size of the driven gear 6.
[0026] It should be noted that the handwheel 401 facilitates manual operation of the lever 4, and the transmission gear 5 is smaller than the driven gear 6, forming a reduction gear set, which reduces the rotation speed of the scraper 2 and increases the torque, making the scraping action smoother and more powerful, and adapting to the processing needs of high-viscosity materials.
[0027] Specifically, the inner side of the grinding cylinder 101 is provided with helical blades, and the helical blades are located between the inner top and bottom walls of the scraper 2.
[0028] The working principle of the above embodiments is as follows: The operator turns the handwheel 401, which drives the rotating rod 4 to rotate. The rotating rod 4 is supported by the support plate 3 to ensure stable rotation. The transmission gear 5 on the rotating rod 4 rotates accordingly and meshes with the driven gear 6. Since the size of the transmission gear 5 is smaller than that of the driven gear 6, the driven gear 6 rotates at a lower speed to achieve deceleration and torque increase. The driven gear 6 drives the rotating ring 7 to rotate. The first magnet 8 on the top and bottom walls of the rotating ring 7 rotates with the rotating ring 7. The first magnet 8 and the second magnet 10 on the scraper 2 have opposite magnetic polarities and generate magnetic attraction, causing the second magnet 10 to rotate synchronously. The second magnet 10 is fixedly connected to the arc plate 201. Therefore, the scraper 2, which consists of the arc plate 201, the fixed shaft 202 and the scraper 203, rotates inside the grinding cylinder 101. The scraper 203 is in close contact with the inner wall of the grinding cylinder 101. During the rotation, it scrapes off the material attached to the inner wall of the grinding cylinder 101, reducing material waste.
[0029] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.
[0030] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A horizontal sand mill for reducing material waste, comprising a sand mill body (1), characterized in that: A grinding cylinder (101) is provided on the right side of the main body (1) of the sand mill, a scraper (2) is provided on the inner side of the grinding cylinder (101), and a driving assembly for driving the scraper (2) is provided on the top of the grinding cylinder (101). The drive assembly includes a support plate (3) fixedly connected to the top of the grinding cylinder (101), a rotating rod (4) rotatably connected to the right side of the support plate (3), a transmission gear (5) fixedly connected to the outer side of the rotating rod (4), a driven gear (6) meshing with the bottom of the transmission gear (5), a rotating ring (7) fixedly connected to the inner side of the center of the driven gear (6), and a first magnet (8) fixedly connected to both the top and bottom walls of the rotating ring (7).
2. A horizontal sand mill for reducing material waste according to claim 1, characterized in that: The grinding cylinder (101) is located inside the rotating ring (7), and a rotating frame (9) is rotatably connected to the outside of the rotating ring (7). The rotating frame (9) is fixedly connected to the outside of the grinding cylinder (101).
3. A horizontal sand mill for reducing material waste according to claim 1, characterized in that: The scraper (2) is composed of two arc plates (201), four fixed shafts (202), and two scraper blades (203).
4. A horizontal sand mill for reducing material waste according to claim 3, characterized in that: The two arc plates (201) are respectively arranged on the upper and lower sides, and the four fixed shafts (202) are fixedly connected between the opposite sides of the upper and lower arc plates (201), and the two scrapers (203) are respectively fixedly connected to the opposite sides of the upper and lower arc plates (201).
5. A horizontal sand mill for reducing material waste according to claim 3, characterized in that: The two arc plates (201) are fixedly connected to a second magnet (10) on their opposite sides, and the second magnet (10) has a different magnetic polarity from the first magnet (8).
6. A horizontal sand mill for reducing material waste according to claim 1, characterized in that: A handwheel (401) is fixedly connected to the right end of the rotating rod (4), and the size of the transmission gear (5) is smaller than the size of the driven gear (6).
7. A horizontal sand mill for reducing material waste according to claim 1, characterized in that: The inner side of the grinding cylinder (101) is provided with spiral blades, and the spiral blades are located between the inner top and bottom walls of the scraper (2).