A high efficiency anti-sticking knife-type grinder

Abstract

The application discloses a high-efficiency anti-sticking knife type grinding instrument, and particularly relates to the technical field of agricultural product detection, which comprises a cutting type grinding instrument body, the interior of a grinding bin of the cutting type grinding instrument body is provided with a three-tooth rotating knife, one side of the cutting type grinding instrument body is provided with a mounting groove, the interior of the mounting groove is provided with a fitting hole, the fitting hole penetrates to the interior of the grinding bin of the cutting type grinding instrument body, and an anti-sticking assembly is arranged in the interior of the fitting hole. The anti-sticking assembly is used for driving the impact block to impact the three-tooth rotating knife through the energy storage and release of the bottom end of the swing plate, the instantaneous rebound of the tension spring, and the generation of high-frequency micro-vibration. The vibration can make the material fall off when the material is just attached to the knife surface and has not been solidified. The dried or partially solidified adhering material can generate cracks and peel off under the vibration. The active anti-sticking is realized from the initial grinding stage, the adhesion between the material and the knife surface is destroyed, and the material accumulation is effectively prevented.

Description

Technical Field

[0001] This invention relates to the field of agricultural product testing technology, specifically to a high-efficiency anti-stick blade grinder. Background Technology

[0002] In the sample pretreatment stage of agricultural product testing, food processing, and pharmaceutical and chemical industries, grinders are the core equipment for preparing samples for testing. Depending on the material characteristics and testing requirements, existing grinders on the market are mainly divided into several types, including hybrid vibration grinders, planetary ball mills, high-throughput tissue grinders, cryogenic grinders, disc grinders, and cutting grinders. Among them, hybrid vibration grinders and planetary ball mills are mainly suitable for fine grinding of hard and brittle materials; high-throughput tissue grinders are suitable for rapid homogenization of biological samples; cryogenic grinders process heat-sensitive samples in a low-temperature environment; disc grinders are mainly used for coarse grinding of medium-hardness materials; and cutting grinders, as the most commonly used grinding equipment in agricultural product testing, use a high-speed rotating blade to create a shearing action with a fixed cutting edge, relying on efficient cutting and shearing force to achieve rapid grinding of materials, especially suitable for the pretreatment of agricultural product samples containing complex components such as fiber, oil, and sugar.

[0003] Cutting grinders are typically driven by energy-saving electric motors, which drive a three-toothed rotary cutter to rotate at high speed via belt or direct drive. Their core working components include the three-toothed rotary cutter, cutting edges, and a bottom sieve. The three-toothed rotary cutter, as the key actuator, pulverizes materials through shearing and impact during high-speed rotation. However, when grinding agricultural samples containing oils, sugars, moisture, and cellulose, the material easily adheres to and accumulates on the blade surface, root, tooth gaps, and inner wall of the grinding chamber, leading to the following problems: a significant decrease in the shearing capacity of the cutter, resulting in a marked reduction in grinding efficiency; the material cannot be fully pulverized, resulting in large deviations in particle size and uneven coarseness in the finished product, directly affecting the accuracy and repeatability of subsequent testing results; residual material is difficult to clean after grinding, easily causing cross-contamination between different sample batches; furthermore, the accumulation of adhered material on the blade surface increases the motor load, leading to increased energy consumption and heat generation, which can easily cause motor overheating and accelerated blade wear over long-term operation, shortening the equipment's lifespan. To address the issue of blade sticking, existing technologies typically employ several methods, but all of these methods have significant limitations: Firstly, common practices include coating the tool surface with an anti-stick coating or mirror polishing the grinding chamber wall. Some solutions attempt to use hydrophobic and oleophobic coatings or diamond-like coatings. However, under the actual working conditions of high-speed grinding, hard particles in the material continuously scour and wear the coating, causing it to peel off and scratch after dozens of grinding cycles, resulting in a sharp decline in the anti-stick effect. More importantly, the fragments generated after the coating peels off may mix into the sample, causing serious interference to subsequent heavy metal detection, pesticide residue analysis, etc. Even if wear-resistant ceramic composite coatings are used, they are still essentially passive anti-stick coatings, which can only delay the adhesion time of materials and cannot actively remove the already adhered materials. When grinding sticky materials, the coating surface will still be gradually covered by materials, eventually losing its anti-stick function. Some improvement schemes attempt to install fixed scrapers or cleaning brushes in the grinding chamber. However, the relative motion trajectory between the blade and the scraper is complex when the three-tooth rotary cutter rotates at high speed. The fixed scraper can only contact specific trajectory positions of the blade and cannot cover the entire blade, resulting in extremely limited cleaning effect. Moreover, if the gap between the fixed scraper and the high-speed rotating blade is too small, there is a risk of blade collision; if the gap is too large, the scraping effect is completely lost. When processing samples with a lot of fiber, the fibrous material is easy to get tangled on the fixed scraper, which exacerbates the clogging problem. Although some schemes introduce elastic scrapers, they lack dynamic control over the contact state between the scraper and the blade. After long-term operation, scraper wear leads to an increase in the contact gap, and the anti-sticking effect decreases accordingly. Furthermore, it is impossible to make adaptive adjustments during the grinding process. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high-efficiency anti-sticking blade grinder to solve the problems mentioned in the background section.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution: A high-efficiency anti-sticking blade grinder includes a cutting grinder body. A three-tooth rotating blade is installed inside the grinding chamber of the cutting grinder body. A mounting groove is formed on one side of the cutting grinder body, and a mating hole is formed on one side of the mounting groove, extending into the grinding chamber of the cutting grinder body. An anti-sticking component is disposed inside the mating hole to prevent material from sticking to the outside of the three-tooth rotating blade during grinding. The anti-sticking component includes: a collision block movably fitted inside the mating hole, a connecting column fixedly installed on one side of the collision block, a movable plate inside the mounting groove, a rotating hole on one side of the movable plate, a first bearing fixedly fitted onto the inner circular wall of the rotating hole, a rotating column fixedly fitted onto the inner circular wall of the inner ring of the first bearing, and a swing plate fixedly installed at one end of the rotating column. A linkage plate is fixedly installed at the other end of the rotating column. A stabilizing column and a pull rod are fixedly installed on one side of the linkage plate. A balance bar is provided on one side of the moving plate. A movable hole and a U-shaped hole are opened on one side of the balance bar. A fixing block is fixedly installed on the bottom surface of the movable hole. A positioning rod is fixedly installed on one side of the fixing block. A tension spring is fixedly installed between the positioning rod and the pull rod. A sliding column is fixedly installed on one side of the cutting and grinding instrument body. The movable hole is movably sleeved with the sliding column. The U-shaped hole is movably sleeved with the stabilizing column. A rubber sheet is fixedly installed on one side of the collision block. A drive assembly for intermittently colliding with the three-tooth rotary cutter is provided on the bottom surface of the moving plate. A feed assembly for displacing the moving plate is provided on the inner bottom surface of the mounting groove. An airflow assembly for assisting in preventing the three-tooth rotary cutter from sticking is provided on one side of the cutting and grinding instrument body.

[0006] By adopting the above technical solution, and through the inclusion of a collision block, when the operator uses the cutting and grinding machine to pre-process agricultural products for sample testing, the three-toothed rotary blade can rotate to grind and pulverize the agricultural materials. Simultaneously, the collision block moves to collide with the three-toothed rotary blade, causing it to vibrate and dislodge the material that initially adheres to its surface. First, by pressing the bottom of the swing plate towards the three-toothed rotary blade, the swing plate rotates around the rotating column, driving the linkage plate to rotate. At this time, the top of the swing plate moves away from the three-toothed rotary blade. Since the two ends of the rotating column are connected to the swing plate and the linkage plate respectively, the rotation of the swing plate causes the linkage plate to move in unison with the swing plate, thus causing the top of the linkage plate to also move away from the three-toothed rotary blade. As the three-tooth rotary cutter moves, the top of the linkage plate moves, causing the pull rod and stabilizing column to move synchronously. The stabilizing column moves towards the opening of the U-shaped hole, and the pull rod stretches the tension spring. At this time, the top of the swing plate will drive the connecting column and the collision block away from the outside of the three-tooth rotary cutter. Subsequently, the pressing force at the bottom of the swing plate disappears, and the tension spring will quickly drive the pull rod, stabilizing column, and linkage plate to rebound. Then, the linkage plate will drive the rotating column, swing plate, connecting column, and collision block to reset and rebound. At this time, the collision block will collide with the surface of the three-tooth rotary cutter, breaking the adhesion between the material and the three-tooth rotary cutter. Thus, in the initial stage of grinding and pulverizing agricultural materials with the three-tooth rotary cutter, when the material has just adhered and has not yet solidified, it can be detached by vibration. At the same time, the dried or partially solidified material will crack and peel off under vibration.

[0007] Preferably, the drive assembly includes: a fixed frame, which is fixedly installed on the bottom surface of the movable plate; a micro drive motor is fixedly sleeved inside the fixed frame; a cam is fixedly installed at one end of the drive shaft of the micro drive motor; a force-bearing plate is fixedly installed on one side of the swing plate; two connecting blocks are provided between the connecting column and the swing plate, the two connecting blocks are spaced apart; a connecting rod and a movable rod are fixedly installed between the two connecting blocks; a fixed hole is opened on one side of the connecting column; a second bearing is fixedly sleeved on the inner circular wall of the fixed hole; the inner circular wall of the inner ring of the second bearing is fixedly sleeved with the connecting rod; and two movable blocks are fixedly installed on the side of the swing plate near the connecting column, the movable blocks being movably sleeved with the movable rod.

[0008] By adopting the above technical solution, through the setting of the cam, the operator uses a micro drive motor. The drive shaft of the micro drive motor rotates, driving the cam to rotate. Since the drive shaft of the micro drive motor and the cam are eccentrically set, when the cam's protruding part rotates to the position of the swing plate, it will first contact the surface of the force plate. Then, the cam will press the force plate towards the three-tooth rotary cutter and drive the bottom end of the swing plate to move. This allows the swing plate to drive the rotating column to rotate around the rotating hole. When the top of the swing plate moves away from the three-tooth rotary cutter, the swing plate will pull the movable rod, connecting block, and connecting rod through the movable block. Then, the connecting rod will pull the connecting column and the collision block to move. This allows the collision block to move linearly inside the mating hole. Then, through the compression of the cam, the collision block can hit the three-tooth rotary cutter with an intermittent time, which can avoid continuous hitting of the three-tooth rotary cutter, affecting the grinding accuracy and equipment life.

[0009] Preferably, the feed assembly includes: two mounting platforms, both of which are fixedly mounted on the inner bottom surface of the mounting slot; a micro servo motor is fixedly sleeved inside the mounting platform; a transmission column is fixedly mounted at one end of the drive shaft of the micro servo motor; a gear is fixedly sleeved on the outer circular wall of the transmission column; the transmission column is movably sleeved with the mounting platform; a rack is fixedly mounted on the bottom surface of the moving plate; the gear meshes with the rack; and contact points are provided on the outside of the three-tooth rotary cutter.

[0010] By adopting the above technical solution, and through the gear configuration, before the operator uses the cutting grinder to grind and crush agricultural materials, the operator uses a micro servo motor. The drive shaft of the micro servo motor rotates, driving the transmission column and gears to rotate. The gears mesh, causing the rack to move linearly. The rack's movement causes the moving plate, swing plate, connecting column, and collision block to move closer to the three-tooth rotary cutter. This brings the concave surface of the collision block to the contact point on the outside of the three-tooth rotary cutter. Since the cutting edge of the three-tooth rotary cutter is inwardly tapered towards its center, and the contact point is on the outermost ring of the three-tooth rotary cutter, the concave surface of the collision block can only touch the contact point and cannot touch the cutting edge of the three-tooth rotary cutter. This prevents the collision block from directly colliding with the cutting edge of the three-tooth rotary cutter during its rotation. Once the collision block is close to the contact point, the three-tooth rotary cutter rotates to grind and crush the agricultural materials. At the same time, the micro drive motor is activated to cause the collision block to strike the three-tooth rotary cutter.

[0011] Preferably, two blocking posts are fixedly installed on the side of the movable plate near the balance bar.

[0012] By adopting the above technical solution, the two blocking posts are located at the top and bottom of the linkage plate, respectively, which can block the linkage plate and prevent the tension spring from causing the linkage plate and the swing plate to swing excessively during the rebound. Once the swing amplitude of the linkage plate exceeds the original rotation amplitude, the linkage plate will be blocked by the blocking posts.

[0013] Preferably, a sliding platform is fixedly installed on the top surface of the movable plate, and an I-beam is fixedly installed inside the mounting groove, with the sliding platform slidably connected to the I-beam.

[0014] By adopting the above technical solution, when the moving plate moves toward the three-tooth rotary cutter via the sliding table, the moving plate will drive the sliding table to move linearly along the outside of the I-beam, thereby enabling the sliding table to move stably.

[0015] Preferably, a PLC controller is fixedly installed on one side of the cutting and grinding instrument body, a distance rod is fixedly installed on one side of the mounting groove, a detection groove is opened on the side of the distance rod near the moving plate, an infrared distance sensor is fixedly installed inside the detection groove, and the PLC controller is electrically connected to the micro servo motor and the infrared distance sensor respectively.

[0016] By adopting the above technical solution, and through the setting of an infrared distance sensor, the operator first sets the distance between the collision block and the contact point, and then sets the distance between the infrared distance sensor and the moving plate, so that the distances of the two are consistent. When the moving plate moves the connecting column and the collision block closer to the three-tooth rotary cutter, the moving plate will also move closer to the position of the distance rod. Then, through the detection of the infrared distance sensor, it can be detected that the distance between the moving plate and the distance rod is shortening, and at the same time, the collision block is also moving closer to the position of the three-tooth rotary cutter. When the moving plate moves to the distance set by the infrared distance sensor, for example, in the initial state, the total length of the infrared distance sensor from the moving plate is 10 centimeters, and the total length of the collision block from the contact point is 5 centimeters. At this time, by setting the distance of the moving plate to only 5 centimeters from the infrared distance sensor, the infrared distance sensor transmits a signal to the PLC controller. The PLC controller controls the micro servo motor to stop running, so that the collision block stops in time at the contact point.

[0017] Preferably, a detection plate is fixedly installed on the side of the linkage plate away from the moving plate, and a vibration sensor is fixedly installed inside the detection plate. The vibration sensor is electrically connected to the PLC controller.

[0018] By adopting the above technical solution, and through the vibration sensor, the vibration generated by the collision block after each impact on the contact point is transmitted to the detection board and the vibration sensor. The vibration sensor can then detect the vibration signal of each impact by the collision block. When the collision block runs and makes contact with the contact point, the vibration sensor does not detect a signal, indicating that the collision block has not touched the contact point. At this time, the vibration sensor will stop the operation of the micro drive motor through the PLC controller, so that the collision block stops hitting the contact point, thereby avoiding the collision block running idle.

[0019] Preferably, the airflow assembly includes: a fixing groove, which is formed on one side of the cutting and grinding instrument body; a diverter pipe is fixedly sleeved inside the fixing groove; a plurality of air jet holes are formed on one side of the fixing groove, all of which are inclined downwards and extend into the grinding chamber of the cutting and grinding instrument body; a plurality of nozzles are fixedly installed on the outer circular wall of the diverter pipe, which extend into the interior of the diverter pipe and are movably sleeved with the air jet holes; an installation hole is formed on one side of the fixing groove, and a connecting pipe is fixedly sleeved on the inner circular wall of the installation hole; the connecting pipe is fixedly installed with the diverter pipe and extends into the interior of the diverter pipe; a miniature air pump is fixedly installed on one side of the cutting and grinding instrument body, and the air outlet of the miniature air pump is fixedly sleeved with the connecting pipe.

[0020] By adopting the above technical solution, through the set nozzles, firstly, the moving plate opens downwards from the inside of the fixed groove at an angle. Then, the operator uses a micro air pump to inject compressed air into the inside of the diversion pipe through the connecting pipe. Subsequently, the airflow is split and sprayed out through multiple nozzles. Then, the airflow enters the grinding groove of the cutting grinder body through the jet hole and reaches the surface of the three-tooth rotary blade. Thus, in conjunction with the impact of the collision block, the material on the surface of the three-tooth rotary blade is washed by the airflow.

[0021] Preferably, a first solenoid valve is fixedly sleeved on the outer circular wall of the connecting pipe, a three-way pipe is fixedly connected to the outside of the connecting pipe, a second solenoid valve is fixedly sleeved on the top end of the three-way pipe, and a liquid nitrogen pipe is fixedly sleeved on the inner circular wall of the second solenoid valve.

[0022] By adopting the above technical solution, through the set three-way pipe, the staff connects the liquid nitrogen pipe to the liquid nitrogen, and then uses the first solenoid valve to close it, stopping the air from reaching the position of the three-way pipe through the micro air pump. Then, the second solenoid valve is opened, allowing liquid nitrogen to be sprayed into the grinding chamber of the cutting grinder body through the three-way pipe, connecting pipe, diverting pipe and spray pipe, to quickly cool down the three-tooth rotary blade. In the testing of agricultural products, many samples are sensitive to temperature. The heat generated by plant leaves can cause more than 20% loss of chlorophyll, and the friction of oily medicinal materials can cause oil to overflow. Grinding heat-sensitive samples at room temperature can easily lead to sample degradation and volatilization of effective ingredients. At this time, liquid nitrogen is used to control the grinding temperature to below four degrees or between five and ten degrees.

[0023] In summary, the present invention has the following main beneficial effects: 1. This invention stores energy by pressing the bottom of the swing plate, and after release, the tension spring instantly rebounds to drive the collision block to strike the three-tooth rotary blade, generating high-frequency micro-vibration. This vibration shakes off the material just as it adheres to the blade surface before it has solidified. The dried or partially solidified adhering material cracks and peels off under the vibration, achieving active anti-sticking from the initial stage of grinding, destroying the adhesion between the material and the blade surface, and effectively preventing material accumulation.

[0024] 2. This invention uses a micro drive motor to drive an eccentric cam to rotate, which in turn drives a swing plate to swing periodically through a force plate. This causes the collision block to move linearly along the mating hole, thus achieving automatic and continuous striking of the three-tooth rotary cutter without manual intervention. The eccentric rotation of the cam causes a pause between each strike, avoiding continuous high-frequency strikes that could affect grinding accuracy and equipment lifespan, achieving a balance between anti-sticking effect and equipment protection.

[0025] 3. The present invention uses a micro servo motor to drive the moving plate to translate through gear meshing with a rack and pinion, precisely feeding the concave surface of the collision block to the contact point of the non-blade part of the three-tooth rotary cutter, thereby achieving precise control of the distance between the collision block and the cutter body. The concave surface of the collision block can only contact the contact point and cannot touch the inward-curving blade, thus ensuring the striking effect while avoiding damage to the blade and resolving the contradiction between anti-sticking and cutter protection.

[0026] 4. This invention uses an infrared distance sensor to detect the distance between the moving plate and the distance rod in real time. When the moving plate moves to the preset position, the PLC controller automatically stops the micro servo motor feed, realizing closed-loop precise control of the gap between the collision block and the contact point. It stops as soon as the plate is in position, preventing the collision block from excessively impacting the cutter body and causing damage, or the gap from being too large and causing the impact to fail.

[0027] 5. This invention uses a vibration sensor to detect the vibration signal of each impact through a detection board to confirm whether the collision block is effectively contacting the contact point. When no effective vibration is detected, the PLC controller automatically stops the micro drive motor to prevent the collision block from running idle, causing ineffective wear and energy waste, and improving the reliability of equipment operation.

[0028] 6. This invention uses compressed air to continuously blow the blade surface through a nozzle, promptly blowing away loosened materials. This, combined with the mechanical impact of the collision block, forms a synergistic anti-sticking effect. By switching the supply of liquid nitrogen through a three-way pipe, the grinding temperature can be controlled below 4℃ or 5-10℃, effectively preventing the loss of effective components in heat-sensitive agricultural product samples, plant leaves, and oily medicinal materials due to heat generation during the grinding process. This meets the diverse needs of agricultural product testing for different sample pretreatment. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the main structure of the cutting and grinding instrument of the present invention; Figure 3 This is a schematic diagram of the mounting groove structure of the present invention; Figure 4 This is a schematic diagram of the fixing groove structure of the present invention; Figure 5 This is a schematic diagram of the liquid nitrogen tube structure of the present invention; Figure 6 yes Figure 5 A magnified schematic diagram of a portion of the structure of A in the diagram; Figure 7 This is a schematic diagram of the connecting pipe structure of the present invention; Figure 8 yes Figure 7 A magnified schematic diagram of a portion of the structure of B; Figure 9 This is a schematic diagram of the contact point structure of the present invention; Figure 10 This is a schematic diagram of the connecting column structure of the present invention; Figure 11 This is a schematic diagram of the swing plate structure of the present invention; Figure 12 This is a schematic diagram of the movable plate structure of the present invention; Figure 13 This is a schematic diagram of the cam structure of the present invention; Figure 14 This is a schematic diagram of the distance bar structure of the present invention; Figure 15 This is a schematic diagram of the diversion tube structure of the present invention.

[0030] Reference numerals in the attached drawings: 1. Body of the cutting and grinding instrument; 2. Three-tooth rotary cutter; 3. Mounting slot; 4. Mounting platform; 5. Mating hole; 6. Collision block; 7. Connecting column; 8. Moving plate; 9. Rotating hole; 10. Rotating column; 11. Swinging plate; 12. First bearing; 13. Linkage plate; 14. Balance bar; 15. Sliding column; 16. Stabilizing column; 17. Movable hole; 18. U-shaped hole; 19. Fixing block; 20. Positioning rod; 21. Pull rod; 22. Tension spring; 23. Fixing frame; 24. Miniature drive motor; 25. Cam; 26. Force plate; 27. Connecting block; 28. Fixing hole; 29. ​​Second bearing; 30. Connecting rod; 31. Movable rod; 32. Movable block; 33. Miniature servo motor; 34. Transmission column; 35. Gear; 36. Rack; 37. Blocking column; 38. Sliding table; 39. I-beam; 40. Distance rod; 41. Detection slot; 42. Infrared distance sensor; 43. Detection plate; 44. Vibration sensor; 45. Contact point; 46. Fixing slot; 47. Diverter pipe; 48. Air jet hole; 49. Nozzle; 50. Mounting hole; 51. Connecting pipe; 52. Miniature air pump; 53. First solenoid valve; 54. T-connector; 55. Second solenoid valve; 56. Liquid nitrogen pipe; 57. Rubber sheet. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example: Reference Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 and Figure 12 , Figure 13A high-efficiency anti-sticking blade grinder includes a cutting grinder body 1. A three-tooth rotating blade 2 is installed inside the grinding chamber of the cutting grinder body 1. An installation groove 3 is provided on one side of the cutting grinder body 1. A fitting hole 5 is provided on one side of the installation groove 3, extending into the grinding chamber of the cutting grinder body 1. An anti-sticking component is provided inside the fitting hole 5 to prevent material from sticking to the outside of the three-tooth rotating blade 2 during grinding. The anti-sticking component includes: a collision block 6, which is movably fitted inside the fitting hole 5. A connecting column 7 is fixedly installed on one side of the collision block 6. A movable plate 8 is provided inside the installation groove 3. A rotating hole 9 is provided on one side of the movable plate 8. A first bearing 12 is fixedly fitted onto the inner circular wall of the rotating hole 9. A rotating column 10 is fixedly sleeved on the inner circular wall of the inner ring 12. A swing plate 11 is fixedly installed at one end of the rotating column 10, and a linkage plate 13 is fixedly installed at the other end of the rotating column 10. A stabilizing column 16 and a pull rod 21 are fixedly installed on one side of the linkage plate 13. A balance rod 14 is provided on one side of the moving plate 8. An movable hole 17 and a U-shaped hole 18 are opened on one side of the balance rod 14. A fixing block 19 is fixedly installed on the bottom surface of the movable hole 17. A positioning rod 20 is fixedly installed on one side of the fixing block 19. A tension spring 22 is fixedly installed between the positioning rod 20 and the pull rod 21. A sliding column 15 is fixedly installed on one side of the cutting and grinding instrument body 1. The movable hole 17 is movably sleeved with the sliding column 15, and the U-shaped hole 18 is movably sleeved with the stabilizing column 16. A rubber sheet 57 is fixedly installed on one side of the collision block 6. When the cutting grinder body 1 is used to process agricultural products for sample testing, the three-tooth rotary blade 2 rotates at high speed to grind and crush the material through the collision block 6. Simultaneously, the collision block 6 intermittently collides with the three-tooth rotary blade 2, causing the blade to generate high-frequency micro-vibration. The material is shaken off when it begins to adhere to the blade surface. Specifically, the worker presses the bottom of the swing plate 11 towards the direction of the three-tooth rotary cutter 2. The swing plate 11 rotates synchronously around the rotating column 10, causing the linkage plate 13 to rotate. The top of the swing plate 11 moves away from the three-tooth rotary cutter 2. Since the two ends of the rotating column 10 are connected to the swing plate 11 and the linkage plate 13 respectively, their movements are synchronized. The top of the linkage plate 13 drives the pull rod 21 and the stabilizing column 16 to move synchronously. The stabilizing column 16 slides along the U-shaped hole 18 towards the opening. The pull rod 21 stretches the tension spring 22, and the top of the swing plate 11 simultaneously drives... The connecting column 7 and the collision block 6 move away from the three-tooth rotary cutter 2. When the pressure at the bottom of the swing plate 11 disappears, the tension spring 22 quickly rebounds, driving the pull rod 21, the stabilizing column 16 and the linkage plate 13 to reset. The linkage plate 13 drives the swing plate 11, the connecting column 7 and the collision block 6 to impact the surface of the three-tooth rotary cutter 2 through the rotating column 10, destroying the adhesion between the material and the blade surface. This causes the newly attached but not yet cured material to fall off through vibration, and the dried or partially cured material to crack and peel off under vibration, thus achieving active anti-sticking in the early stage of grinding.

[0033] Based on the above embodiments, refer to Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 11 , Figure 12 and Figure 13 The bottom surface of the movable plate 8 is provided with a drive assembly for intermittently colliding with the three-tooth rotary cutter 2. The drive assembly includes a fixed frame 23, which is fixedly installed on the bottom surface of the movable plate 8. A micro drive motor 24 is fixedly sleeved inside the fixed frame 23. A cam 25 is fixedly installed at one end of the drive shaft of the micro drive motor 24. A force plate 26 is fixedly installed on one side of the swing plate 11. Two connecting blocks 27 are provided between the connecting column 7 and the swing plate 11. The two connecting blocks 27 are spaced apart. A connecting rod 30 and a movable rod 31 are fixedly installed between the two connecting blocks 27. A fixing hole 28 is opened on one side of the connecting column 7. A second bearing 29 is fixedly sleeved on the inner circular wall of the fixing hole 28. The inner circular wall of the inner ring of the second bearing 29 is fixedly sleeved with the connecting rod 30. Two movable blocks 32 are fixedly installed on the side of the swing plate 11 near the connecting column 7. The movable blocks 32 are movably sleeved with the movable rod 31. Two blocking columns 37 are fixedly installed on the side of the movable plate 8 near the balance bar 14. The micro drive motor 24 is started by the cam 25 to drive the cam 25 to rotate. Since the drive shaft and the cam 25 are eccentrically set, when the protruding part of the cam 25 rotates to the position of the swing plate 11, it first contacts the surface of the force plate 26 and presses the force plate 26 towards the three-tooth rotary cutter 2, causing the bottom end of the swing plate 11 to move. The swing plate 11 rotates around the rotating hole 9 and the top moves away from the three-tooth rotary cutter 2. The movable block 32 pulls the movable rod 31, the connecting block 27 and the connecting rod 30 to move. The connecting rod 30 pulls the connecting column 7 and the collision block 6 to move linearly in the mating hole 5, so that the collision block 6 hits the three-tooth rotary cutter 2. The eccentric rotation of the cam 25 makes the collision block 6 hit the three-tooth rotary cutter 2 with an intermittent time, avoiding continuous hitting that affects the grinding accuracy and equipment life. By setting up two blocking posts 37, which are located at the top and bottom of the linkage plate 13 respectively, the swing amplitude of the linkage plate 13 is limited, preventing the linkage plate 13 and the swing plate 11 from swinging excessively beyond the original rotation amplitude when the tension spring 22 rebounds.

[0034] Based on the above embodiments, refer to Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13The bottom surface of the mounting groove 3 is provided with a feeding assembly for displacing the moving plate 8. The feeding assembly includes two mounting platforms 4, both of which are fixedly installed on the bottom surface of the mounting groove 3. A micro servo motor 33 is fixedly sleeved inside the mounting platform 4. A transmission column 34 is fixedly installed at one end of the drive shaft of the micro servo motor 33. A gear 35 is fixedly sleeved on the outer circular wall of the transmission column 34. The transmission column 34 is movably sleeved with the mounting platform 4. A rack 36 is fixedly installed on the bottom surface of the moving plate 8. The gear 35 and the rack 36 are meshed. A contact point 45 is provided on the outside of the three-tooth rotary cutter 2. A sliding table 38 is fixedly installed on the top surface of the moving plate 8. An I-beam 39 is fixedly installed inside the mounting groove 3. The sliding table 38 and the I-beam 39 are slidably connected. Before the three-tooth rotary cutter 2 rotates, the micro servo motor 33 is started to drive the transmission column 34 and gear 35 to rotate. The gear 35 meshes with the rack 36 to move linearly, driving the moving plate 8, swing plate 11, connecting column 7 and collision block 6 to move closer to the three-tooth rotary cutter 2. The concave surface of the collision block 6 is fed to fit with the contact point 45. Since the cutting edge of the three-tooth rotary cutter 2 is inward, the contact point 45 is located at the non-cutting edge of the outermost ring of the three-tooth rotary cutter 2. The concave surface of the collision block 6 can only contact the contact point 45 and cannot touch the cutting edge, thus preventing the collision block 6 from damaging the cutting edge. After the collision block 6 gets close to the contact point 45, the three-tooth rotary cutter 2 rotates and grinds. At the same time, the micro drive motor 24 is started to strike. The gear and rack transmission accurately sends the collision block 6 to the set position to ensure the striking effect. The collision block 6 only contacts the non-cutting edge contact point 45 to avoid damaging the cutting edge of the three-tooth rotary cutter 2. When the movable plate 8 moves toward the three-tooth rotary cutter 2 via the sliding table 38, the sliding table 38 slides in a straight line along the I-beam 39 to ensure the stable translation of the movable plate 8.

[0035] Based on the above embodiments, refer to Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 10 , Figure 12 , Figure 13 and Figure 14 A PLC controller is fixedly installed on one side of the cutting and grinding machine body 1. A distance rod 40 is fixedly installed on one side of the mounting slot 3. A detection slot 41 is opened on the side of the distance rod 40 near the moving plate 8. An infrared distance sensor 42 is fixedly installed inside the detection slot 41. The PLC controller is electrically connected to the micro servo motor 33 and the infrared distance sensor 42 respectively. A detection plate 43 is fixedly installed on the side of the linkage plate 13 away from the moving plate 8. A vibration sensor 44 is fixedly installed inside the detection plate 43. The vibration sensor 44 is electrically connected to the PLC controller. By using the infrared distance sensor 42, the distance from the collision block 6 to the contact point 45 is set to be consistent with the distance from the infrared distance sensor 42 to the moving plate 8. When the moving plate 8 moves the collision block 6 closer to the three-tooth rotary cutter 2, the moving plate 8 simultaneously moves closer to the distance rod 40. The infrared distance sensor 42 detects that the distance between the moving plate 8 and the distance rod 40 has shortened. When it moves to the preset distance, such as the initial total length of 10cm, it stops when it is set to 5cm. The sensor transmits the signal to the PLC controller to control the micro servo motor 33 to stop running, so that the collision block 6 stops feeding in time when it is in contact with the contact point 45, thereby achieving precise gap control. The infrared distance sensor 42 works with the PLC to achieve automatic and precise positioning of the gap between the collision block 6 and the contact point 45, stopping as soon as it is in place, thus avoiding excessive impact force of the collision block 6 or damage to the cutter body. The vibration sensor 44 is set up so that after each impact of the collision block 6 to the contact point 45, the vibration generated is transmitted to the vibration sensor 44 through the detection plate 43. The sensor detects the vibration signal of each impact. When the collision block 6 runs to the contact point 45, the vibration sensor 44 does not detect a signal, indicating that the collision block 6 has not effectively contacted the contact point 45. The PLC controller stops the micro drive motor 24 from running, so that the collision block 6 stops hitting and avoids the wear and tear and energy waste caused by idling.

[0036] Based on the above embodiments, refer to Figure 2 , Figure 3 , Figure 4 , Figure 7 and Figure 15 A cutting grinder body 1 has an airflow assembly on one side for assisting in preventing the three-tooth rotary cutter 2 from sticking. The airflow assembly includes a fixing groove 46, which is located on one side of the cutting grinder body 1. A diverter pipe 47 is fixedly sleeved inside the fixing groove 46. Several jet holes 48 are opened on one side of the inside of the fixing groove 46. The jet holes 48 are all inclined downward and penetrate into the grinding chamber of the cutting grinder body 1. Several nozzles 49 are fixedly installed on the outer circular wall of the diverter pipe 47. The nozzles 49 extend into the inside of the diverter pipe 47 and are movably sleeved with the jet holes 48. An installation hole 50 is opened on one side of the inside of the fixing groove 46. A connecting pipe 51 is fixedly sleeved on the inner circular wall of the installation hole 50. The connecting pipe 51 is fixedly installed with the diverter pipe 47 and extends into the inside of the diverter pipe 47. A micro air pump 52 is fixedly installed on one side of the cutting grinder body 1. The air outlet of the micro air pump 52 is fixedly sleeved with the connecting pipe 51. Through the nozzle 49, the moving plate 8 opens downwards from the inside of the fixed groove 46 at an angle. The micro air pump 52 is activated to inject compressed air into the diversion pipe 47 through the connecting pipe 51. The compressed air is then diverted through multiple nozzles 49 and enters the grinding chamber through the air jet hole 48, reaching the surface of the three-tooth rotary blade 2. In conjunction with the impact block 6, the blade surface material is washed by airflow, further improving the anti-sticking effect. The airflow washing and mechanical impact work together to provide double protection.

[0037] Based on the above embodiments, refer to Figure 3 , Figure 4 and Figure 15 A first solenoid valve 53 is fixedly sleeved on the outer circular wall of the connecting pipe 51, a three-way pipe 54 is fixedly connected to the outside of the connecting pipe 51, a second solenoid valve 55 is fixedly sleeved on the top end of the three-way pipe 54, and a liquid nitrogen pipe 56 is fixedly sleeved on the inner circular wall of the second solenoid valve 55. The liquid nitrogen pipe 56 is connected to the liquid nitrogen source through the three-way pipe 54. The first solenoid valve 53 is closed to stop the air supply, and the second solenoid valve 55 is opened to allow liquid nitrogen to be sprayed into the grinding chamber through the three-way pipe 54, connecting pipe 51, diverter pipe 47 and nozzle 49, which rapidly cools the three-tooth rotary cutter 2. In the testing of agricultural products, many samples are sensitive to temperature. The heat generated by plant leaves can cause more than 20% loss of chlorophyll. Oily medicinal materials generate heat through friction, causing oil to overflow. Grinding heat-sensitive samples at room temperature can easily lead to sample degradation and volatilization of effective components. By using liquid nitrogen to control the grinding temperature below 4℃ or 5-10℃, the heat-sensitive sample components can be effectively protected. The rapid cooling by liquid nitrogen prevents the degradation of heat-sensitive sample components.

[0038] Working principle: Please refer to Figures 1-15As shown, by setting the collision block 6, when the staff uses the cutting grinder body 1 to perform sample pretreatment on agricultural products, the three-tooth rotary blade 2 can rotate to grind and crush the agricultural product material. Simultaneously, the collision block 6 moves to collide with the three-tooth rotary blade 2, causing the three-tooth rotary blade 2 to vibrate and the material on the surface of the three-tooth rotary blade 2 to vibrate and fall off. First, by pressing the bottom end of the swing plate 11 towards the three-tooth rotary blade 2, the swing plate 11 drives the linkage plate 13 to rotate around the rotating column 10. At this time, the top of the swing plate 11 will move away from the three-tooth rotary blade 2. Since the two ends of the rotating column 10 are connected to the swing plate 11 and the linkage plate 13 respectively, the swing plate 11 will drive the linkage plate 13 to move in the same direction as the swing plate 11 when it rotates. As a result, the top of the linkage plate 13 will also move away from the three-tooth rotary blade 2. When the top of the linkage plate 13 moves, it drives the pull rod 21 and the stabilizing column 16 to move synchronously. The stabilizing column 16 moves toward the opening of the U-shaped hole 18, and the pull rod 21 will stretch the tension spring 22. At this time, the top of the swing plate 11 will drive the connecting column 7 and the collision block 6 away from the outside of the three-tooth rotary cutter 2. Subsequently, the pressing pressure at the bottom of the swing plate 11 disappears, and the tension spring 22 will quickly drive the pull rod 21, the stabilizing column 16 and the linkage plate 13 to rebound. Then, the linkage plate 13 will drive the rotating column 10, the swing plate 11, the connecting column 7 and the collision block 6 to reset and rebound. At this time, the collision block 6 will collide with the surface of the three-tooth rotary cutter 2, destroying the adhesion between the material and the three-tooth rotary cutter 2. Thus, in the initial stage of grinding and pulverizing agricultural materials by the three-tooth rotary cutter 2, when the material has just adhered and has not yet solidified, it can be detached by vibration. At the same time, the dried or partially solidified material will crack and peel off under vibration.

[0039] By using the cam 25, the operator can rotate the cam 25 by using the micro drive motor 24. The drive shaft of the micro drive motor 24 rotates, causing the cam 25 to rotate. Since the drive shaft of the micro drive motor 24 and the cam 25 are eccentrically set, when the protruding part of the cam 25 rotates to the position of the swing plate 11, it will first contact the surface of the force plate 26. Then, the cam 25 will press the force plate 26 towards the three-tooth rotary cutter 2 and drive the bottom end of the swing plate 11 to move. This allows the swing plate 11 to drive the rotating column 10 to rotate around the rotating hole 9. When the top of the swing plate 11 moves away from the three-tooth rotary cutter 2, the swing plate 11 will pull the movable rod 31, the connecting block 27 and the connecting rod 30 to move through the movable block 32. Then, the connecting rod 30 will pull the connecting column 7 and the collision block 6 to move. This allows the collision block 6 to move linearly inside the mating hole 5. Then, through the pressing of the cam 25, the collision block 6 can hit the three-tooth rotary cutter 2 with intermittent time, which can avoid continuous hitting of the three-tooth rotary cutter 2, affecting the grinding accuracy and equipment life.

[0040] Before the three-tooth rotary cutter 2 rotates and grinds agricultural materials using the cutting grinder body 1, the operator uses a micro servo motor 33. The drive shaft of the micro servo motor 33 rotates, driving the transmission column 34 and gear 35 to rotate. In turn, the gear 35 meshes and drives the rack 36 to move linearly. The movement of the rack 36 causes the moving plate 8, swing plate 11, connecting column 7, and collision block 6 to move closer to the three-tooth rotary cutter 2, bringing the concave surface of the collision block 6 to the contact point with the outside of the three-tooth rotary cutter 2. The contact points 45 and 45 are close together. Since the blade of the three-tooth rotary blade 2 is inwardly tapered towards the center of the three-tooth rotary blade 2, and the contact point 45 is on the outermost ring of the three-tooth rotary blade 2, the concave surface of the collision block 6 can only touch the contact point 45 and cannot touch the blade of the three-tooth rotary blade 2. This prevents the collision block 6 from directly colliding with the blade of the three-tooth rotary blade 2 during its rotation. When the collision block 6 is close to the contact point 45, the three-tooth rotary blade 2 rotates to grind and crush the agricultural materials. At the same time, the micro drive motor 24 is started to make the collision block 6 strike the three-tooth rotary blade 2.

[0041] By using the infrared distance sensor 42, the operator first sets the distance between the collision block 6 and the contact point 45, and then sets the distance between the infrared distance sensor 42 and the moving plate 8, so that the distances of the two are consistent. When the moving plate 8 moves the connecting column 7 and the collision block 6 closer to the three-tooth rotary cutter 2, the moving plate 8 will also move closer to the position of the distance rod 40. Then, through the detection of the infrared distance sensor 42, it can be detected that the distance between the moving plate 8 and the distance rod 40 is shortening. At the same time, the collision block 6 is also moving closer to the position of the three-tooth rotary cutter 2. When the moving plate 8 moves to the distance set by the infrared distance sensor 42, for example, in the initial state, the total length of the infrared distance sensor 42 from the moving plate 8 is 10 centimeters, and the total length of the collision block 6 from the contact point 45 is 5 centimeters. At this time, by setting the distance of the moving plate 8 from the infrared distance sensor 42 to only 5 centimeters, the infrared distance sensor 42 transmits the signal to the PLC controller. The PLC controller controls the micro servo motor 33 to stop running, so that the collision block 6 stops in time at the contact point 45.

[0042] With the vibration sensor 44 in place, the vibration generated by the collision block 6 after each impact on the contact point 45 is transmitted to the detection board 43 and the vibration sensor 44. The vibration sensor 44 can then detect the vibration signal of each impact by the collision block 6. When the collision block 6 runs and makes contact with the contact point 45, the vibration sensor 44 does not detect a signal, indicating that the collision block 6 has not touched the contact point 45. At this time, the vibration sensor 44 will stop the operation of the micro drive motor 24 through the PLC controller, so that the collision block 6 stops hitting the contact point 45, thereby avoiding the collision block 6 running empty.

[0043] Through the nozzle 49, the moving plate 8 opens downwards from the inside of the fixed groove 46 at an angle. Then, the operator uses a micro air pump 52 to inject compressed air into the inside of the diversion pipe 47 through the connecting pipe 51. The compressed air is then sprayed out through multiple nozzles 49. The airflow then enters the grinding groove of the cutting grinder body 1 through the jet hole 48 and reaches the surface of the three-tooth rotary cutter 2. This allows the airflow to be used in conjunction with the impact of the collision block 6 to wash the material on the surface of the three-tooth rotary cutter 2.

[0044] Through the set three-way pipe 54, the staff connects the liquid nitrogen pipe 56 to the liquid nitrogen, and then closes the first solenoid valve 53 to stop the air from reaching the position of the three-way pipe 54 through the micro air pump 52. Then, the second solenoid valve 55 is opened to allow liquid nitrogen to be sprayed into the grinding chamber of the cutting grinder body 1 through the three-way pipe 54, connecting pipe 51, diverting pipe 47 and spray pipe 49 to quickly cool the three-tooth rotary blade 2. In the testing of agricultural products, a large number of samples are sensitive to temperature. The heat generated by plant leaves will cause more than 20% loss of chlorophyll. Friction heat generated by oily medicinal materials will cause oil to overflow. Grinding heat-sensitive samples at room temperature will easily cause sample degradation and volatilization of effective ingredients. At this time, the grinding temperature is controlled below four degrees or between five and ten degrees by liquid nitrogen.

[0045] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency anti-sticking blade grinder, characterized in that, include: The cutting grinder body (1) has a three-tooth rotary cutter (2) inside the grinding chamber of the cutting grinder body (1). A mounting groove (3) is opened on one side of the cutting grinder body (1). A fitting hole (5) is opened on one side inside the mounting groove (3). The fitting hole (5) penetrates into the grinding chamber of the cutting grinder body (1). An anti-stick component is disposed inside the mating hole (5) to prevent the material from sticking to the outside of the three-tooth rotary cutter (2) during grinding. The anti-stick component includes: a collision block (6), which is movably fitted inside the mating hole (5). A connecting column (7) is fixedly installed on one side of the collision block (6). A movable plate (8) is disposed inside the mounting groove (3). A rotating hole (9) is opened on one side of the movable plate (8). A first bearing (12) is fixedly fitted on the inner circular wall of the rotating hole (9). A rotating column (10) is fixedly fitted on the inner circular wall of the inner ring of the first bearing (12). A swing plate (11) is fixedly installed on one end of the rotating column (10). A linkage plate (13) is fixedly installed on the other end of the rotating column (10). A stabilizing column (16) and a pull rod (21) are fixedly installed on one side of the linkage plate (13). A balance rod (14) is provided on one side of the moving plate (8). An movable hole (17) and a U-shaped hole (18) are opened on one side of the balance rod (14). A fixing block (19) is fixedly installed on the bottom surface of the movable hole (17). A positioning rod (20) is fixedly installed on one side of the fixing block (19). A tension spring (22) is fixedly installed between the positioning rod (20) and the pull rod (21). A sliding column (15) is fixedly installed on one side of the cutting and grinding instrument body (1). The movable hole (17) is movably connected to the sliding column (15). The U-shaped hole (18) is movably connected to the stabilizing column (16). A rubber sheet (57) is fixedly installed on one side of the collision block (6). The bottom surface of the moving plate (8) is provided with a drive assembly for intermittently colliding with the three-tooth rotary cutter (2); the inner bottom surface of the mounting groove (3) is provided with a feed assembly for displacing the moving plate (8); and one side of the cutting and grinding machine body (1) is provided with an airflow assembly for assisting in preventing the three-tooth rotary cutter (2) from sticking.

2. The high-efficiency anti-sticking blade grinder according to claim 1, characterized in that, The driving component includes: A fixed frame (23) is fixedly installed on the bottom surface of the movable plate (8). A micro drive motor (24) is fixedly sleeved inside the fixed frame (23). A cam (25) is fixedly installed at one end of the drive shaft of the micro drive motor (24). A force plate (26) is fixedly installed on one side of the swing plate (11). Two connecting blocks (27) are provided between the connecting column (7) and the swing plate (11). The two connecting blocks (27) are spaced apart. A connecting rod (30) and a movable rod (31) are fixedly installed between the connecting blocks (27). A fixing hole (28) is provided on one side of the connecting column (7). A second bearing (29) is fixedly sleeved on the inner circular wall of the fixing hole (28). The inner circular wall of the inner ring of the second bearing (29) is fixedly sleeved with the connecting rod (30). Two movable blocks (32) are fixedly installed on the side of the swing plate (11) near the connecting column (7). The movable blocks (32) are movably sleeved with the movable rod (31).

3. The high-efficiency anti-sticking blade grinder according to claim 1, characterized in that, The feed assembly includes: Two mounting platforms (4) are fixedly installed on the inner bottom surface of the mounting groove (3). A micro servo motor (33) is fixedly sleeved inside the mounting platform (4). A transmission column (34) is fixedly installed at one end of the drive shaft of the micro servo motor (33). A gear (35) is fixedly sleeved on the outer circular wall of the transmission column (34). The transmission column (34) is movably sleeved with the mounting platform (4). A rack (36) is fixedly installed on the bottom surface of the moving plate (8). The gear (35) meshes with the rack (36). A contact point (45) is provided on the outside of the three-tooth rotary cutter (2).

4. The high-efficiency anti-sticking blade grinder according to claim 1, characterized in that: Two blocking posts (37) are fixedly installed on the side of the movable plate (8) near the balance bar (14).

5. The high-efficiency anti-sticking blade grinder according to claim 1, characterized in that: A sliding table (38) is fixedly installed on the top surface of the movable plate (8), and an I-beam (39) is fixedly installed inside the mounting groove (3). The sliding table (38) and the I-beam (39) are slidably connected.

6. The high-efficiency anti-sticking blade grinder according to claim 3, characterized in that: A PLC controller is fixedly installed on one side of the cutting and grinding machine body (1). A distance rod (40) is fixedly installed on one side of the mounting slot (3). A detection slot (41) is opened on the side of the distance rod (40) near the moving plate (8). An infrared distance sensor (42) is fixedly installed inside the detection slot (41). The PLC controller is electrically connected to the micro servo motor (33) and the infrared distance sensor (42) respectively.

7. The high-efficiency anti-sticking blade grinder according to claim 6, characterized in that: A detection plate (43) is fixedly installed on the side of the linkage plate (13) away from the moving plate (8). A vibration sensor (44) is fixedly installed inside the detection plate (43). The vibration sensor (44) is electrically connected to the PLC controller.

8. The high-efficiency anti-sticking blade grinder according to claim 1, characterized in that: The airflow assembly includes: a fixed groove (46), which is located on one side of the cutting and grinding machine body (1). A diverter pipe (47) is fixedly fitted inside the fixed groove (46). Several jet holes (48) are provided on one side of the fixed groove (46). The jet holes (48) are all inclined downward and penetrate into the grinding chamber of the cutting and grinding machine body (1). Several nozzles (49) are fixedly installed on the outer circular wall of the diverter pipe (47). The nozzles (49) extend to the diverter pipe. Inside the tube (47), the nozzle (49) is movably connected to the jet hole (48). An installation hole (50) is provided on one side of the inside of the fixing groove (46). A connecting pipe (51) is fixedly sleeved on the inner circular wall of the installation hole (50). The connecting pipe (51) is fixedly installed with the diverter pipe (47) and extends into the inside of the diverter pipe (47). A micro air pump (52) is fixedly installed on one side of the cutting and grinding instrument body (1). The air outlet of the micro air pump (52) is fixedly sleeved with the connecting pipe (51).

9. A high-efficiency anti-sticking blade grinder according to claim 8, characterized in that: The outer circular wall of the connecting pipe (51) is fixedly sleeved with a first solenoid valve (53), the outside of the connecting pipe (51) is fixedly connected with a three-way pipe (54), the top end of the three-way pipe (54) is fixedly sleeved with a second solenoid valve (55), and the inner circular wall of the second solenoid valve (55) is fixedly sleeved with a liquid nitrogen pipe (56).

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