Food detection sample pulverizing device
Patent Information
- Application Number
- CN202522105540.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0005]为此，本实用新型的一个目的在于提出一种食品检测样品粉碎装置，以解决背景技术中所提到的问题，克服现有技术中存在的不足
1、当需要更换驱动轴上的刀片时，首先拧下支撑板顶端锁定卡板上的螺栓，取下锁定卡板，随后打开粉碎筒顶端的盖板。接着，转动螺纹套，由于螺纹套内壁与安装盘外表面螺纹连接，且螺纹套与阻挡环、粉碎筒固定连接，螺纹套会带动粉碎筒沿安装盘向上移动，直至粉碎筒完全脱离安装盘与驱动轴区域。之后，拧下驱动轴顶部固定刀片的螺栓，即可取下旧刀片并更换新刀片。更换完成后，反向转动螺纹套，使粉碎筒沿安装盘向下复位，盖上盖板，再将锁定卡板通过螺栓固定在支撑板顶端，让锁定卡板底端贴合盖板顶面，完成组装。该结构通过螺纹套与安装盘的螺纹连接，替代了传统多个螺栓连接粉碎筒与机体的方式，拆卸粉碎筒时无需逐一拧下大量螺栓，大幅简化操作流程，节省时间与精力。同时，粉碎筒可整体脱离驱动轴区域，为刀片更换提供充足操作空间，避免因空间狭小导致操作不便或划伤手指的情况，降低安全风险，保障操作人员安全，也让刀片更换工作更高效，满足食品检测样品粉碎装置日常维护的便捷性需求。
Smart Images
Figure CN224686973U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pulverizing devices, and in particular to a pulverizing device for food testing samples. Background Technology
[0002] Food sample pulverizing devices, as crucial pretreatment equipment in the food testing process, primarily function to transform various food samples into a finely pulverized state suitable for subsequent testing and analysis. Structurally, they typically comprise a pulverizing chamber, a power drive system, pulverizing blades (or other pulverizing components), and a sample collection device. The pulverizing chamber, serving as the working space for sample pulverization, can employ a closed or semi-closed structure depending on its design, aiming to prevent sample leakage or external contamination during the pulverization process. The power drive system generally consists of a motor and matching transmission components, providing stable and sufficient rotational power to the pulverizing blades, enabling them to operate at high speeds for effective sample pulverization.
[0003] In common designs, the grinding cylinder is connected to the machine body by multiple bolts. This connection method requires operators to spend a lot of time and effort during installation. When it is necessary to replace the blades inside the grinding cylinder, the disadvantages of this connection method become fully apparent. Due to the small space inside the grinding cylinder, it is inconvenient to operate and it is easy to cut fingers. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to provide a food testing sample crushing device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.
[0006] To achieve the above objectives, one embodiment of this utility model provides a food testing sample crushing device, including a base frame. Two symmetrically arranged rotating shafts are rotatably connected inside the base frame via bearings. An assembly plate is fixedly connected between the two rotating shafts. A motor is fixedly installed at the bottom of the assembly plate, located inside the base frame. The output end of the motor is fixedly connected to a drive shaft rotatably connected to the assembly plate. A plurality of circumferentially arrayed blades are fixedly installed on the top of the drive shaft via bolts. A mounting plate coaxial with the drive shaft is fixedly connected to the top surface of the assembly plate. The drive shaft is rotatably connected to the mounting plate via bearings. A blocking ring is slidably connected to the top of the mounting plate. A threaded sleeve is fixedly connected to the outer surface of the blocking ring. The inner wall of the threaded sleeve is threadedly connected to the outer surface of the mounting plate. A crushing cylinder is fixedly connected to the outer surface of the threaded sleeve. A cover plate is provided at the top of the crushing cylinder. Two symmetrically arranged support plates are fixedly connected to the outer surface of the assembly plate. A locking plate is fixedly installed at the top of each support plate via bolts. The bottom ends of both locking plates are abutted against the top surface of the cover plate.
[0007] Preferably, in any of the above schemes, a partition plate is embedded in the inner wall of each support plate, and a threaded post is threadedly connected to one side of each partition plate. One end of the threaded post is rotatably connected to a clamping plate through a bearing, and the sides of the two clamping plates away from the threaded post are in contact with the outer surface of the crushing cylinder.
[0008] Preferably, in any of the above embodiments, a guide rod is fixedly connected to the side of the clamping plate near the threaded post, and the guide rod is slidably connected to the partition plate.
[0009] Preferably, in any of the above embodiments, a pad is fixedly connected to the inner wall of each of the support plates, and the top surfaces of both pads are in contact with the bottom surface of the crushing cylinder.
[0010] Preferably, in any of the above embodiments, a rubber isolation ring coaxial with the mounting plate is fixedly connected to the top surface of the assembly plate, and the top end of the rubber isolation ring is in contact with the bottom surface of the crushing cylinder.
[0011] Preferably, as described in any of the above embodiments, the top surface of the mounting plate is provided with an embedding groove, and the blocking ring is slidably connected to the mounting plate through the embedding groove.
[0012] Preferably, in any of the above embodiments, a sealing ring is fixedly connected to the bottom surface of the blocking ring, a sealing groove is provided on the inner wall of the embedding groove, and the sealing ring is slidably connected to the mounting plate through the sealing groove.
[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. When replacing the blades on the drive shaft, first unscrew the bolts on the locking plate at the top of the support plate, remove the locking plate, and then open the cover plate at the top of the crushing cylinder. Next, rotate the threaded sleeve. Because the inner wall of the threaded sleeve is threadedly connected to the outer surface of the mounting plate, and the threaded sleeve is fixedly connected to the retaining ring and the crushing cylinder, the threaded sleeve will drive the crushing cylinder to move upward along the mounting plate until the crushing cylinder is completely separated from the mounting plate and the drive shaft area. After that, unscrew the bolts fixing the blades at the top of the drive shaft to remove the old blades and replace them with new ones. After replacement, rotate the threaded sleeve in the opposite direction to reset the crushing cylinder downward along the mounting plate, cover it, and then fix the locking plate to the top of the support plate with bolts, so that the bottom end of the locking plate fits against the top surface of the cover plate to complete the assembly. This structure replaces the traditional method of connecting the crushing cylinder and the machine body with multiple bolts by threaded connection between the threaded sleeve and the mounting plate. When disassembling the crushing cylinder, it is not necessary to unscrew a large number of bolts one by one, which greatly simplifies the operation process and saves time and effort. Meanwhile, the pulverizing cylinder can be completely detached from the drive shaft area, providing ample operating space for blade replacement. This avoids inconvenience or finger injuries caused by limited space, reduces safety risks, ensures operator safety, and makes blade replacement more efficient, meeting the convenience requirements for daily maintenance of food testing sample pulverizing devices.
[0014] 2. When installing the grinding cylinder, first align the bottom surface of the grinding cylinder with the top surface of the pad on the inner wall of the support plate. At this point, the top of the rubber isolation ring on the top surface of the assembly plate will be in contact with the bottom surface of the grinding cylinder, providing initial support and positioning. Next, rotate the threaded post on the partition plate on the inner wall of the support plate. The threaded post will push the clamping plate towards the grinding cylinder until the side of the two clamping plates away from the threaded post is in contact with the outer surface of the grinding cylinder. Simultaneously, the guide rod on the clamping plate will slide along the partition plate to ensure smooth movement of the clamping plate. Afterward, cover the cylinder with the cover plate and secure it with the locking plate to complete the overall fixation of the grinding cylinder. When the device is running, the motor drives the drive shaft and blades to rotate and grind the sample. All the fixing structures work together to limit the displacement of the grinding cylinder. The pad provides bottom support for the grinding cylinder, preventing it from sinking due to its own weight or vibrations during the grinding process. The clamping plate, driven by threaded rods, clamps the grinding cylinder from both sides, preventing lateral swaying. The guide rod ensures smooth movement of the clamping plate and uniform clamping force. The rubber isolation ring not only further supports the grinding cylinder but also buffers vibrations during grinding, reducing noise and component wear. The locking plate, while securing the cover, also indirectly limits the top of the grinding cylinder. This multi-structure synergy ensures the grinding cylinder remains stable during operation, preventing uneven sample grinding caused by cylinder swaying, guaranteeing the quality and effectiveness of food sample grinding, while also reducing collision wear between components and extending the device's lifespan. Attached Figure Description
[0015] Figure 1 This is a structural schematic diagram of the assembly of this utility model; Figure 2This is a schematic diagram of the structure of the base frame of this utility model; Figure 3 This is a schematic diagram of the structure of the motor of this utility model; Figure 4 This is a schematic diagram of the structure of the pulverizing cylinder of this utility model; Figure 5 This is a schematic diagram of the structure of the clamping plate of this utility model.
[0016] In the diagram: 1-Base frame, 2-Rotating shaft, 3-Assembly plate, 4-Motor, 5-Drive shaft, 6-Blade, 7-Mounting plate, 8-Blocking ring, 9-Threaded sleeve, 10-Crushing cylinder, 11-Cover plate, 12-Support plate, 13-Locking plate, 14-Divider plate, 15-Threaded post, 16-Clamping plate, 17-Guide rod, 18-Pad plate, 19-Rubber isolation ring, 20-Embedded groove, 21-Sealing ring, 22-Sealing groove. Detailed Implementation
[0017] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following.
[0018] like Figures 1 to 5 As shown, a food testing sample crushing device includes a base frame 1. Two symmetrically arranged rotating shafts 2 are rotatably connected inside the base frame 1 via bearings. An assembly plate 3 is fixedly connected between the two rotating shafts 2. A motor 4 is fixedly mounted on the bottom of the assembly plate 3, located inside the base frame 1. The output end of the motor 4 is fixedly connected to a drive shaft 5 rotatably connected to the assembly plate 3. A plurality of circumferentially arrayed blades 6 are fixedly mounted on the top of the drive shaft 5 via bolts. A mounting plate 7, coaxial with the drive shaft 5, is fixedly connected to the top surface of the assembly plate 3. The mounting plate 7 is rotatably connected to the bearing. A blocking ring 8 is slidably connected to the top of the mounting plate 7. A threaded sleeve 9 is fixedly connected to the outer surface of the blocking ring 8. The inner wall of the threaded sleeve 9 is threadedly connected to the outer surface of the mounting plate 7. A crushing cylinder 10 is fixedly connected to the outer surface of the threaded sleeve 9. A cover plate 11 is provided at the top of the crushing cylinder 10. Two symmetrically arranged support plates 12 are fixedly connected to the outer surface of the assembly plate 3. A locking plate 13 is fixedly installed at the top of each support plate 12 by bolts. The bottom ends of the two locking plates 13 are in contact with the top surface of the cover plate 11.
[0019] As an optional technical solution of this utility model, a partition plate 14 is embedded in the inner wall of each support plate 12. A threaded post 15 is threadedly connected to one side of each partition plate 14. One end of the threaded post 15 is rotatably connected to a clamping plate 16 via a bearing. The sides of the two clamping plates 16 away from the threaded post 15 are in contact with the outer surface of the crushing cylinder 10, so that the two clamping plates 16 are in contact with the outer surface of the crushing cylinder 10. This structure can clamp and fix the crushing cylinder 10 from both sides, preventing the crushing cylinder 10 from shifting laterally due to vibration during device operation, ensuring the relative position stability of the crushing cylinder 10 with the drive shaft 5 and the blade 6, and ensuring the smoothness of the sample crushing process.
[0020] As an optional technical solution of this utility model, a guide rod 17 is fixedly connected to the side of the clamping plate 16 near the threaded post 15. The guide rod 17 is slidably connected to the partition plate 14, which can provide precise guidance for the movement of the clamping plate 16, prevent the clamping plate 16 from shifting or tilting under the push of the threaded post 15, ensure that the clamping plate 16 is always parallel and in contact with the outer surface of the crushing cylinder 10, and ensure uniform clamping force.
[0021] As an optional technical solution of this utility model, a pad 18 is fixedly connected to the inner wall of each support plate 12. The top surfaces of the two pads 18 are in contact with the bottom surface of the crushing cylinder 10, bearing the weight of the crushing cylinder 10 itself and the downward pressure generated when crushing the sample, preventing the crushing cylinder 10 from sinking or deforming due to gravity or vibration, and ensuring that the crushing cylinder 10 always remains in a horizontal state during the operation of the device.
[0022] As an optional technical solution of this utility model, the top surface of the assembly plate 3 is fixedly connected with a rubber isolation ring 19 coaxial with the mounting plate 7. The top end of the rubber isolation ring 19 is in contact with the bottom surface of the crushing cylinder 10, which can further support the bottom of the crushing cylinder 10, enhance the stability of the crushing cylinder 10 installation, and form a double bottom support structure with the pad plate 18.
[0023] As an optional technical solution of this utility model, the top surface of the mounting plate 7 is provided with an embedding groove 20. The blocking ring 8 is slidably connected to the mounting plate 7 through the embedding groove 20, which can provide precise trajectory constraints for the movement of the blocking ring 8, ensuring that the blocking ring 8 drives the threaded sleeve 9 and the crushing cylinder 10 to rise and fall smoothly along the axial direction of the mounting plate 7, avoiding the crushing cylinder 10 from shifting or tilting during disassembly or installation, and ensuring the coaxiality of the crushing cylinder 10 with the drive shaft 5 and the blade 6.
[0024] As an optional technical solution of this utility model, a sealing ring 21 is fixedly connected to the bottom surface of the blocking ring 8, and a sealing groove 22 is opened on the inner wall of the embedding groove 20. The sealing ring 21 is slidably connected to the mounting plate 7 through the sealing groove 22, which can effectively seal the gap between the blocking ring 8 and the embedding groove 20, prevent the sample powder generated during the crushing process from leaking from the gap, avoid sample loss or pollution of the external environment, and ensure the integrity and accuracy of the test sample.
[0025] A food testing sample pulverizing device, the working principle of which is as follows: 1): When it is necessary to replace the blade 6 on the drive shaft 5, first unscrew the bolt on the locking plate 13 at the top of the support plate 12, remove the locking plate 13, and then open the cover plate 11 at the top of the crushing cylinder 10.
[0026] 2): Rotate the threaded sleeve 9. Since the inner wall of the threaded sleeve 9 is threadedly connected to the outer surface of the mounting plate 7, and the threaded sleeve 9 is fixedly connected to the blocking ring 8 and the crushing cylinder 10, the threaded sleeve 9 will drive the crushing cylinder 10 to move upward along the mounting plate 7 until the crushing cylinder 10 is completely separated from the area between the mounting plate 7 and the drive shaft 5.
[0027] 3): By fixing the bolts on the top of the lower drive shaft 5 to secure the blade 6, the old blade 6 can be removed and replaced with a new blade 6. After replacement, rotate the threaded sleeve 9 in the opposite direction to reset the crushing cylinder 10 downwards along the mounting plate 7.
[0028] In summary, when replacing the blade 6 on the drive shaft 5 in this food testing sample crushing device, first unscrew the bolts on the locking plate 13 at the top of the support plate 12, remove the locking plate 13, and then open the cover plate 11 at the top of the crushing cylinder 10. Next, rotate the threaded sleeve 9. Since the inner wall of the threaded sleeve 9 is threadedly connected to the outer surface of the mounting plate 7, and the threaded sleeve 9 is fixedly connected to the blocking ring 8 and the crushing cylinder 10, the threaded sleeve 9 will drive the crushing cylinder 10 to move upward along the mounting plate 7 until the crushing cylinder 10 is completely separated from the area between the mounting plate 7 and the drive shaft 5. After that, unscrew the bolts fixing the blade 6 at the top of the drive shaft 5 to remove the old blade 6 and replace it with a new blade 6. After replacement, rotate the threaded sleeve 9 in the opposite direction to reset the crushing cylinder 10 downward along the mounting plate 7, cover it with the cover plate 11, and then fix the locking plate 13 to the top of the support plate 12 with bolts, so that the bottom end of the locking plate 13 fits against the top surface of the cover plate 11, completing the assembly. This structure replaces the traditional method of connecting the crushing cylinder and the machine body with multiple bolts by threaded sleeve 9 and mounting plate 7. When disassembling the crushing cylinder 10, it is not necessary to unscrew a large number of bolts one by one, which greatly simplifies the operation process and saves time and effort. At the same time, the crushing cylinder 10 can be completely separated from the area of drive shaft 5, providing ample operating space for blade 6 replacement. This avoids inconvenience or finger cuts caused by limited space, reduces safety risks, ensures operator safety, and makes blade 6 replacement more efficient, meeting the convenience requirements of daily maintenance of food testing sample crushing device. When installing the crushing cylinder 10, first place the bottom surface of the crushing cylinder 10 against the top surface of the pad 18 on the inner wall of the support plate 12. At this time, the top of the rubber isolation ring 19 on the top surface of the assembly plate 3 is in contact with the bottom surface of the crushing cylinder 10, initially supporting and positioning the crushing cylinder 10. Next, rotate the threaded post 15 on the partition plate 14 on the inner wall of the support plate 12. The threaded post 15 pushes the clamping plate 16 towards the crushing cylinder 10 until the side of the two clamping plates 16 away from the threaded post 15 is in contact with the outer surface of the crushing cylinder 10. At the same time, the guide rod 17 on the clamping plate 16 slides along the partition plate 14 to ensure that the clamping plate 16 moves smoothly. After that, cover the plate 11 and fix the cover plate 11 with the locking plate 13 to complete the full fixation of the crushing cylinder 10. When the device is running, the motor 4 drives the drive shaft 5 and the blade 6 to rotate and crush the sample. All the fixing structures work together to limit the displacement of the crushing cylinder 10. The pad 18 provides bottom support for the crushing cylinder 10, preventing it from sinking due to its own weight or vibration during the crushing process; the clamping plate 16 clamps the crushing cylinder 10 from both sides under the drive of the threaded column 15, preventing the crushing cylinder 10 from swaying laterally; the guide rod 17 ensures that the clamping plate 16 moves smoothly and that the clamping force is uniform; the rubber isolation ring 19 not only further supports the crushing cylinder 10, but also buffers the vibration during the crushing process, reducing noise and component wear; while the locking plate 13 fixes the cover plate 11, it also indirectly limits the top of the crushing cylinder 10.The synergistic effect of multiple structures ensures that the crushing cylinder 10 remains stable during device operation, preventing uneven sample crushing by the blades 6 due to shaking of the crushing cylinder 10, thus guaranteeing the quality and effectiveness of food sample crushing, while also reducing collision and wear between components and extending the service life of the device.
Claims
1. A food sample pulverizing device, characterized in that: The assembly includes a base frame (1), inside which two symmetrically arranged rotating shafts (2) are rotatably connected via bearings. An assembly plate (3) is fixedly connected between the two rotating shafts (2). A motor (4) is fixedly installed at the bottom of the assembly plate (3). The motor (4) is located inside the base frame (1). The output end of the motor (4) is fixedly connected to a drive shaft (5) rotatably connected to the assembly plate (3). Several circumferentially arrayed blades (6) are fixedly installed on the top of the drive shaft (5) via bolts. A mounting plate (7) coaxial with the drive shaft (5) is fixedly connected to the top surface of the assembly plate (3). The drive shaft (5) is connected to the mounting plate (7) via bearings. The mounting plate (7) is rotatably connected, and a blocking ring (8) is slidably connected to the top of the mounting plate (7). A threaded sleeve (9) is fixedly connected to the outer surface of the blocking ring (8). The inner wall of the threaded sleeve (9) is threadedly connected to the outer surface of the mounting plate (7). A crushing cylinder (10) is fixedly connected to the outer surface of the threaded sleeve (9). A cover plate (11) is provided at the top of the crushing cylinder (10). Two symmetrically arranged support plates (12) are fixedly connected to the outer surface of the assembly plate (3). A locking plate (13) is fixedly installed at the top of each support plate (12) by bolts. The bottom ends of the two locking plates (13) are in contact with the top surface of the cover plate (11).
2. The food testing sample pulverizing device according to claim 1, characterized in that: Each of the support plates (12) has a partition plate (14) embedded in its inner wall. Each partition plate (14) has a threaded post (15) threaded to one side. One end of the threaded post (15) is rotatably connected to a clamping plate (16) via a bearing. The sides of the two clamping plates (16) away from the threaded post (15) are in contact with the outer surface of the crushing cylinder (10).
3. The food testing sample pulverizing device according to claim 2, characterized in that: A guide rod (17) is fixedly connected to the side of the clamping plate (16) near the threaded post (15), and the guide rod (17) is slidably connected to the partition plate (14).
4. The food testing sample pulverizing device according to claim 3, characterized in that: Each of the support plates (12) has a pad (18) fixedly connected to its inner wall, and the top surfaces of both pads (18) are in contact with the bottom surface of the crushing cylinder (10).
5. The food testing sample pulverizing device according to claim 4, characterized in that: The top surface of the assembly plate (3) is fixedly connected to a rubber isolation ring (19) coaxial with the mounting plate (7), and the top end of the rubber isolation ring (19) is in contact with the bottom surface of the crushing cylinder (10).
6. The food testing sample pulverizing device according to claim 5, characterized in that: The top surface of the mounting plate (7) is provided with an embedding groove (20), and the blocking ring (8) is slidably connected to the mounting plate (7) through the embedding groove (20).
7. The food testing sample pulverizing device according to claim 6, characterized in that: The bottom surface of the blocking ring (8) is fixedly connected to a sealing ring (21), and the inner wall of the embedded groove (20) is provided with a sealing groove (22). The sealing ring (21) is slidably connected to the mounting plate (7) through the sealing groove (22).