Full-automatic double-channel knife grinder

Abstract

The utility model discloses a full -automatic double -channel knife formula grinder, the shell is equipped with the first lapping cavity and second lapping cavity who isolates each other, be provided with first drive arrangement in the first lapping cavity, the first drive arrangement drive's first drive shaft, and the first lapping barrel subassembly of fixed connection on the first drive shaft, the top of first lapping barrel subassembly is equipped with the first feed port, is provided with the first gravity gland of automatic opening and closing on the first feed port, the bottom of second lapping cavity is installed cup seat, and cup seat is equipped with the second drive arrangement fixedly, and the second lapping barrel subassembly of second drive arrangement direct drive, the top of second lapping barrel subassembly is equipped with the second feed port, is provided with the second gravity gland of automatic opening and closing on the second feed port, and the first drive arrangement and second drive arrangement are the drive arrangement of different type and different power. Solve the single parameter problem of sample preparation instrument.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically a fully automatic dual-channel blade grinder. Background Technology

[0002] The significance of food safety testing lies in ensuring food quality and safety, and protecting consumer health. Food safety testing can rapidly and accurately detect and analyze harmful substances in food, including toxic substances, pesticide residues, heavy metals, and microorganisms. Food safety testing helps food production enterprises and food supervision agencies conduct food quality control and risk assessment, as well as detect potential safety hazards in food, ensuring that food meets standards and regulatory requirements. Food safety testing is widely used in food processing, the catering industry, and import / export trade, and is crucial for safeguarding the public's food safety.

[0003] Food safety testing requires pretreatment of food by crushing, grinding, and homogenizing. Due to the wide variety of food samples, different samples have different requirements for sample preparation instruments in terms of capacity, rotation speed, etc., and these parameters vary considerably. Most existing sample preparation instruments on the market have fixed processing capacities and narrow adjustable rotation speed ranges. A single instrument can only meet the pretreatment needs of a portion of food samples, failing to meet the needs of preparing multiple varieties of samples. Laboratories need to purchase multiple sample preparation instruments of different models to meet the needs of preparing multiple varieties of samples, which not only occupies laboratory space but also has inconvenient operation due to the different operating methods of different models and manufacturers. Therefore, a new fully automatic dual-channel blade grinder has become a problem urgently needing to be solved by those skilled in the art. Utility Model Content

[0004] This application provides a fully automatic dual-channel blade grinder, including a housing: The outer shell contains a first grinding chamber and a second grinding chamber that are isolated from each other. The first grinding chamber is provided with a first driving device, a first transmission shaft driven by the first driving device, and a first grinding barrel assembly fixedly connected to the first transmission shaft. The first grinding barrel assembly is provided with a first feed inlet at the top, and a first gravity pressure cover that can be automatically opened and closed is provided on the first feed inlet; A cup holder is installed at the bottom of the second grinding chamber, and a second driving device and a second grinding barrel assembly directly driven by the second driving device are fixedly installed on the cup holder. The top of the second grinding barrel assembly is provided with a second feed inlet, and the second feed inlet is provided with a second gravity pressure cover that can be automatically opened and closed; The first drive device and the second drive device are different types and have different power, so that the first grinding barrel assembly and the second grinding barrel assembly can operate independently in different working modes.

[0005] Optionally, the first grinding barrel assembly includes a first grinding barrel and a first cutting tool disposed therein, the first cutting tool being fixedly mounted on the first drive shaft.

[0006] Optionally, the first driving device is a servo motor.

[0007] Optionally, the second grinding barrel assembly includes a second grinding barrel and a second cutting tool disposed therein, and the second driving device is a long-shaft high-speed motor, the long shaft of which extends into the interior of the second grinding barrel and is directly connected to the second cutting tool.

[0008] Optionally, the first drive device is connected to the first drive shaft via a belt drive mechanism; the belt drive mechanism includes a large pulley installed at the output end of the first drive device, a small pulley installed on the first drive shaft, and a belt sleeved on the large pulley and the small pulley.

[0009] Optionally, the first drive device and the second drive device are each connected to an independent control unit, which can independently set the speed, steering and running time parameters and start and stop independently.

[0010] Optionally, both the first gravity cover and the second gravity cover utilize their own gravity to achieve a normally closed seal of the feed inlet below, and are pushed open when materials are fed in, and automatically fall back and close after the materials pass through.

[0011] The beneficial effects of this application are as follows: The fully automatic dual-channel blade grinder provided by this application, by setting up isolated dual grinding chambers and differentiated drive system, enables the two grinding channels to be adapted to sample processing with different capacity and speed requirements, which solves the technical problems of single-channel equipment with single function and low processing efficiency, and has the advantages of improving the utilization rate of laboratory equipment and the convenience of operation. Attached Figure Description

[0012] Figure 1 The fully automatic dual-channel blade grinder provided in this application; Figure 2 for Figure 1 Schematic diagram of AA section; Figure 3 for Figure 1 Schematic diagram of the BB cross section; In the diagram: 1. Outer shell; 2. First grinding chamber; 3. Second grinding chamber; 4. First drive device; 41. Large pulley; 42. Belt; 5. First drive shaft; 51. Small pulley; 6. First grinding barrel assembly; 61. First grinding barrel assembly; 62. First cutting tool; 7. First feed inlet; 8. First gravity cap; 9. Cup holder; 10. Second drive device; 11. Second grinding barrel assembly; 111. Second grinding barrel; 112. Second cutting tool; 12. Second feed inlet; 13. Second gravity cap. Detailed Implementation

[0013] 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.

[0014] In existing technologies, food safety testing pretreatment requires the selection of appropriate sample preparation equipment based on the characteristics of different samples. Traditional sample preparation instruments generally suffer from fixed capacity and limited speed adjustment range, making it difficult for a single device to meet the diverse sample processing needs. Laboratories often need to configure multiple sample preparation instruments of different specifications, resulting in high space occupancy and complex operating procedures. For example, processing high-fiber samples requires a large-capacity, low-speed grinding device, while processing brittle samples requires a small-capacity, high-speed crushing device. These two types of equipment must be purchased separately and cannot work together.

[0015] To address these issues, researchers discovered that the core limitation to the equipment's versatility lay in the inability of a single-channel structure to accommodate diverse sample preparation parameters. By analyzing the different sample requirements for speed, torque, and processing time, they found that an independently controlled dual-channel structure could overcome the limitations of a single parameter. Further research into the drive system's compatibility revealed that combinations of different types of motors could achieve differentiated power outputs, thus providing a technical foundation for independent dual-channel operation.

[0016] This application provides a fully automatic dual-channel blade grinder, including a housing 1, wherein a first grinding chamber 2 and a second grinding chamber 3 are provided inside the housing 1 and are isolated from each other; The first grinding chamber 2 and the second grinding chamber 3, which are isolated from each other, refer to the physical separation structure between the two chambers to avoid cross-contamination. This can be achieved by using a split shell assembly or an internal partition. Specifically, the two grinding chambers form independent working spaces through the isolation structure and are equipped with different drive systems.

[0017] The first grinding chamber 2 is provided with a first driving device 4, a first transmission shaft 5 driven by the first driving device 4, and a first grinding barrel assembly 6 fixedly connected to the first transmission shaft 5. The first drive device 4 is a servo motor, which is an electric motor capable of precisely controlling speed, direction, and position. Specifically, it can be an AC servo motor combined with an encoder feedback system, achieving high-precision speed adjustment through closed-loop control. In this design, the introduction of the servo motor allows the operating parameters of the first grinding barrel assembly 6 to be flexibly adjusted according to the physical characteristics of the food samples. For example, for samples with significant differences in hardness, the speed can be adjusted to match different grinding requirements. Specifically, the servo motor receives commands from the control unit and independently adjusts the rotational speed and torque output of the first drive shaft 5. For example, when processing foods with high fiber content, it can be set to a low-speed, high-torque mode to avoid blade jamming; while when processing brittle samples, a high-speed, low-torque mode can be used to achieve rapid pulverization. Because the servo motor has a wide speed range, the same grinding chamber can be adapted to various sample processing needs without changing equipment or adjusting the mechanical structure. The first grinding barrel assembly 6 is provided with a first feed inlet 7 at the top, and a first gravity pressure cover 8 that can be automatically opened and closed is provided on the first feed inlet 7. The bottom of the second grinding chamber 3 is equipped with a cup holder 9, and a second driving device 10 and a second grinding barrel assembly 11 directly driven by the second driving device 10 are fixedly mounted on the cup holder 9. The second grinding barrel assembly 11 is provided with a second feed inlet 12 at the top, and a second gravity pressure cover 13 that can be automatically opened and closed is provided on the second feed inlet 12; The first drive device 4 and the second drive device 10 are different types and have different power, so that the first grinding barrel assembly 6 and the second grinding barrel assembly 11 can operate independently in different working modes.

[0018] The second grinding barrel assembly 11 includes a second grinding barrel 111 and a second cutting tool 112 disposed therein. The second driving device 10 is a long-shaft high-speed motor, whose long shaft 101 extends into the interior of the second grinding barrel 111 and is directly connected to the second cutting tool 112.

[0019] The first grinding barrel assembly 6 includes a first grinding barrel 61 and a first cutting tool 62 disposed therein, the first cutting tool 62 being fixedly mounted on the first drive shaft 5.

[0020] The first drive unit 4 drives the cutting tool to perform customized grinding operations via a transmission shaft, while the second drive unit 10 directly drives the cutting tool to achieve high-speed rotation. After the materials enter the corresponding chambers through gravity-pressed covers, the two systems operate independently according to preset parameters. For example, when processing grain samples, the first channel can be set to 800 rpm for coarse crushing, while the second channel is set to 12,000 rpm for fine grinding, achieving simultaneous grading.

[0021] A long-shaft high-speed motor refers to a power unit whose output shaft length exceeds that of a conventional motor. This can be achieved using an integrated brushless motor, where the rotor shaft extends directly to form the long drive shaft, thus eliminating the need for a traditional coupling. Direct connection of the motor's long shaft means there are no intermediate transmission components between the motor output and the cutting tool. This can be achieved through interference fits or rigid flange connections, eliminating transmission backlash and improving power transmission efficiency. The second cutting tool refers to the set of blades installed inside the grinding barrel for cutting materials. It can employ a cross-blade or spiral blade structure, generating shearing force through high-speed rotation to pulverize the material. Specifically, the rotor shaft of the long-shaft high-speed motor passes through the bottom of the second grinding chamber 61 via a sealed bearing, and its end is rigidly connected to the second cutting tool via a threaded or snap-fit ​​structure. When the motor starts, the long shaft drives the cutting tool to rotate at a speed of tens of thousands of revolutions per minute. After the material is fed into the feed port, it is subjected to the impact and shearing action of the high-speed blade. Since the motor output shaft directly drives the cutting tool, the energy loss of traditional belt drive or gear drive is avoided, enabling the second grinding chamber 3 to process samples with high hardness. The first drive device 4 is connected to the first drive shaft 5 via a belt drive mechanism; the belt drive mechanism includes a large pulley 41 installed at the output end of the first drive device 4, a small pulley 51 installed on the first drive shaft 5, and a belt 42 sleeved on the large pulley 41 and the small pulley 51.

[0022] A belt drive mechanism is a mechanical device that transmits power through the friction between the belt 42 and the large pulley 41 and the small pulley 51. Specifically, it can be implemented using a rubber synchronous belt and a trapezoidal grooved pulley; its elastic buffering characteristics reduce transmission shock. The large pulley 41 is the driving pulley with a larger diameter, which can be machined from cast iron. Increasing the diameter of the driving pulley reduces the output speed. The small pulley 51 is the driven pulley with a smaller diameter, which can be made of aluminum alloy. Reducing the diameter of the driven pulley increases the transmission shaft speed. The belt 42 is an elastic annular transmission component, which can be made of polyurethane; its flexibility absorbs vibration energy during transmission. Specifically, when the output shaft of the drive unit drives the large pulley 41 to rotate, the power is transmitted to the small pulley 51 via the belt 42. The difference in diameter between the two pulleys creates a transmission ratio, allowing the first drive shaft 5 to achieve a different rotational speed than the drive unit. For example, when the diameter of the large pulley 41 is twice the diameter of the small pulley 51, the rotational speed of the first drive shaft 5 can reach twice the output speed of the drive unit. This speed change method eliminates the need for a complex gearbox structure; speed adjustment can be achieved simply by changing the combination of pulleys with different diameter ratios, meeting the grinding speed requirements of different food samples. The first drive device 4 and the second drive device 10 are each connected to an independent control unit, which can independently set the speed, direction and running time parameters and start and stop independently.

[0023] The independent control unit refers to a modular circuit electrically connected to the drive unit and equipped with parameter setting functions. It can be implemented using a programmable logic controller (PLC) or an embedded microcontroller, and its function is to independently regulate the operating status of the two drive units. The rotational speed parameter refers to the rotational speed of the drive unit's output shaft, which can be adjusted using a frequency converter or pulse width modulation technology to match the crushing intensity requirements of different materials. The rotation direction parameter refers to the rotational direction of the drive unit's output shaft, which can be achieved through a commutation circuit or motor winding phase switching, used to control the forward and reverse rotation of the cutters to handle material jamming. The running time parameter refers to the single working duration of the drive unit, which can be set through a timer module for precise control of the grinding cycle. Independent start / stop means that the start and stop actions of the two drive units are not related, which can be achieved through separate relays or solid-state switches, ensuring that the operating status of the two grinding channels does not affect each other.

[0024] Specifically, the two control units are integrated into the instrument's operation panel, with independent parameter input areas on the interface. When processing different types of samples, the operator can set the rotation speed of the first drive device 4 to low-speed forward rotation mode and configure a five-minute running time in the first control unit, while simultaneously setting the second drive device 10 to high-speed reverse rotation mode and configuring a three-minute running time in the second control unit. The two drive devices start independently according to their respective control commands. The first grinding barrel assembly 2 performs intermittent grinding according to the set parameters, while the second grinding barrel assembly 3 performs continuous high-speed pulverization. During operation, if it is necessary to temporarily adjust the working status of a certain channel, the parameters can be modified directly through the corresponding control unit without affecting the normal operation of the other channel.

[0025] Both the first gravity cover 8 and the second gravity cover 13 utilize their own gravity to achieve a normally closed seal on the feed inlet below, and are pushed open when materials are fed in, and automatically fall back and close after the materials pass through.

[0026] The first gravity cover 8 and the second gravity cover 13 refer to devices that rely on the weight of the cover to keep the feed inlet closed. They can be made of metal counterweights and hinge structures. When materials are fed in, the cover is opened and then automatically reset.

[0027] The first gravity cap 8 and the second gravity cap 13 are structural components that form a seal at the feed inlet by their own weight. Specifically, the cap body can be made of metal or high-density composite material, and its weight is sufficient to overcome external forces other than the impact of falling material, thus maintaining a sealed state in a static state. The normally closed seal means that the cap always covers the feed inlet when there is no external force. This is achieved by setting an annular sealing ring at the bottom of the cap and forming an interference fit with the edge of the feed inlet. This design allows for temporary displacement when material is fed in while ensuring a tight seal. The automatic return closing refers to the process of the cap automatically resetting under gravity after material passes through. This is achieved by setting a limiting boss on the cap's rotating shaft to control its swing angle, so that the cap returns to its fixed position along a fixed trajectory under the action of gravity after opening. When material is fed into the inlet, its downward impact overcomes the gravity of the gland, causing it to briefly open and form a feeding channel. After the material passes through, the gland loses external support and falls naturally along the hinge axis or guide structure under gravity, resealing the inlet. During this process, the opening angle and resetting speed of the gland can be optimized by adjusting the weight distribution of the gland or the inclination angle of the guide rail; for example, designing the gland's center of gravity to be biased towards the closing direction can accelerate the resetting speed. The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A fully automatic dual-channel blade grinder, comprising a housing (1), characterized in that: The outer shell (1) is provided with a first grinding chamber (2) and a second grinding chamber (3) that are isolated from each other. The first grinding chamber (2) is provided with a first driving device (4), a first transmission shaft (5) driven by the first driving device (4), and a first grinding barrel assembly (6) fixedly connected to the first transmission shaft (5). The first grinding barrel assembly (6) is provided with a first feed port (7) at the top, and a first gravity pressure cover (8) that can be automatically opened and closed is provided on the first feed port (7). The bottom of the second grinding chamber (3) is equipped with a cup holder (9), and a second driving device (10) and a second grinding barrel assembly (11) directly driven by the second driving device (10) are fixedly installed on the cup holder (9). The second grinding barrel assembly (11) is provided with a second feed port (12) at the top, and a second gravity pressure cover (13) that can be automatically opened and closed is provided on the second feed port (12). The first drive device (4) and the second drive device (10) are different types and have different power, so that the first grinding barrel assembly (6) and the second grinding barrel assembly (11) can operate independently in different working modes.

2. The fully automatic dual-channel blade grinder according to claim 1, characterized in that, The first grinding barrel assembly (6) includes a first grinding barrel (61) and a first cutting tool (62) disposed therein, the first cutting tool (62) being fixedly mounted on the first drive shaft (5).

3. The fully automatic dual-channel blade grinder according to claim 2, characterized in that, The first driving device (4) is a servo motor.

4. The fully automatic dual-channel blade grinder according to claim 1, characterized in that, The second grinding barrel assembly (11) includes a second grinding barrel (111) and a second cutting tool (112) disposed therein. The second driving device (10) is a long-shaft high-speed motor, whose long shaft (101) extends into the second grinding barrel (111) and is directly connected to the second cutting tool (112).

5. The fully automatic dual-channel blade grinder according to claim 3, characterized in that, The first drive device (4) is connected to the first drive shaft (5) via a belt drive mechanism; the belt drive mechanism includes a large pulley (41) installed at the output end of the first drive device (4), a small pulley (51) installed on the first drive shaft (5), and a belt (42) sleeved on the large pulley (41) and the small pulley (51).

6. The fully automatic dual-channel blade grinder according to claim 1, characterized in that, The first drive device (4) and the second drive device (10) are each connected to an independent control unit, which can independently set the speed, direction and running time parameters and start and stop independently.

7. The fully automatic dual-channel blade grinder according to claim 1, characterized in that, Both the first gravity cover (8) and the second gravity cover (13) use their own gravity to achieve a normally closed seal of the feed inlet below them, and are pushed open when materials are fed in, and automatically fall back and close after the materials pass through.

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