A lyophilized powder grinder for hippopotamus

Abstract

This invention relates to the field of freeze-dried leech powder processing technology, and discloses a grinding device for freeze-dried leech powder, comprising: an adjustable grinding assembly, including a feeding hopper, a cylindrical jacket bolted to the bottom of the feeding hopper, a grinding cone bolted to the inner wall of the cylindrical jacket, an outer sleeve slidably connected to the outer surface of the cylindrical jacket, and a discharge bin fixedly connected to the bottom end of the outer sleeve. This invention achieves efficient and stable temperature control during the grinding process, effectively protecting the heat-sensitive active ingredients of the freeze-dried leech powder and significantly improving product quality; it employs a fitted cooling structure for all-around low-temperature cooling of the core grinding area, avoiding localized overheating; and it achieves stable circulation of the low-temperature medium through a closed-loop drive structure, combined with a forced air cooling design, which can quickly remove heat and ensure a long-lasting and stable cooling effect.

Description

Technical Field

[0001] This invention relates to the field of freeze-dried leech powder processing technology, specifically to a freeze-dried leech powder grinding device. Background Technology

[0002] Freeze-dried leech powder is a traditional Chinese medicine with extremely high medicinal value. Made from leeches using a low-temperature freeze-drying process, it maximizes the retention of heat-sensitive antithrombin activities such as hirudin and leechin. It possesses the effects of breaking up blood stasis, promoting menstruation, and eliminating masses, and is widely used in the treatment of cerebral thrombosis, hyperlipidemia, and hypertension. After freeze-drying, the leeches are in block or granular form and need to be ground into a uniform and fine powder to meet the requirements of subsequent preparations, oral administration, or further processing. Therefore, grinding is a key step in the production of freeze-dried leech powder.

[0003] Currently, the grinding of lyophilized leech powder mostly uses traditional general-purpose grinding equipment. The main drawback of this equipment is that it cannot adapt to the characteristics of lyophilized leech powder, easily leading to the loss of active ingredients and insufficient grinding uniformity during the grinding process. Traditional grinding equipment lacks a low-temperature protection structure, and the heat generated during grinding can destroy the antithrombin activity in the lyophilized powder, resulting in an increased loss rate of active ingredients. This not only affects product quality and user experience but also reduces the efficacy of subsequent formulations, making it difficult to meet the high-activity grinding requirements of lyophilized leech powder. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a grinding device for freeze-dried leech powder. The efficient and stable temperature control during the grinding process effectively protects the heat-sensitive active ingredients of the freeze-dried leech powder, significantly improves product quality and efficacy stability, and solves the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grinding device for freeze-dried leech powder, comprising: an adjustable grinding assembly, including a feeding hopper, a cylindrical jacket bolted to the bottom of the feeding hopper, a grinding cone bolted to the inner wall of the cylindrical jacket, an outer sleeve slidably connected to the outer surface of the cylindrical jacket, a discharge bin fixedly connected to the bottom end of the outer sleeve, a first wedge bolted to the top of the cylindrical jacket, a second wedge bolt slidably connected to the inclined surface of the first wedge bolt, and an arc-shaped connecting plate bolted to one end of the second wedge bolt. An adjusting screw is rotatably connected to the outer surface of the arc-shaped connecting plate, and a vertical plate is threadedly connected to the outer surface of the adjusting screw. A limit slider is fixedly connected to the outer wall of the cylindrical sleeve, and a limit groove is opened on the outer circumferential surface of the outer sleeve. A base plate is bolted to the bottom of the discharge bin, and a main shaft is rotatably connected inside the base plate. A grinding cone is fixedly connected to the top of the main shaft, and a transmission rod is fixedly connected to the bottom of the main shaft. A drive motor is fixedly connected to the bottom of the transmission rod, and a support leg is fixedly connected to the bottom of the base plate. A support plate is fixedly connected to the outer wall of the support leg.

[0006] A cooling assembly includes a spiral cooling tube, one end of which is connected to a first flexible tube, and the other end of which is connected to a second flexible tube. One end of the first flexible tube is connected to a serpentine heat dissipation tube, and one end of the serpentine heat dissipation tube is threadedly connected to a connecting tube. One end of the connecting tube is threadedly connected to a first-way valve, and one end of the first-way valve is threadedly connected to a drain cylinder. The bottom end of the drain cylinder is threadedly connected to a second-way valve. A piston is slidably connected inside the drain cylinder, and a linkage rod is fixedly connected to the top of the piston. A round pin is rotatably connected to the outer circumference of the linkage rod near the top. A cylindrical cam is slidably connected to the outer circumference of the round pin. A rotating rod is fixedly connected to the inner center of the cylindrical cam, and a frame plate is rotatably connected to the outer circumference of the rotating rod. Heat sinks are fixedly connected to the outer surface of the serpentine heat dissipation tube.

[0007] Preferably, the drive motor is detachably connected to the lower surface of the support plate by bolts, and the output shaft of the drive motor is coaxially fixedly connected to the transmission rod by a flexible coupling. An impeller is fixedly connected to the outer peripheral surface of the transmission rod inside the material discharge bin by locking bolts. The impeller is completely located in the inner cavity of the material discharge bin and leaves a gap of 3-5mm with the inner wall of the material discharge bin. A discharge pipe is integrally formed on the outer peripheral surface of the material discharge bin near the bottom, and the discharge pipe is connected to the inner cavity of the material discharge bin.

[0008] Preferably, the inclined surface of the first wedge forms an angle of 30°-45° with the horizontal plane, the inclined surface of the second wedge is adapted to and slides in close contact with the inclined surface of the first wedge, the bottom of the vertical plate is fixedly connected to the conical surface of the material drop hopper, and a handwheel is fixedly connected to the end of the adjusting screw away from the arc-shaped connecting plate.

[0009] Preferably, two limiting sliders are fixedly connected to the outer wall of the cylindrical sleeve, which are symmetrically arranged around its axis. The two limiting sliders are of the same size and are positioned opposite each other. The limiting sliders correspond one-to-one with the two limiting grooves opened on the outer circumference of the outer sleeve and slide in cooperation.

[0010] Preferably, a pointer is detachably connected to the side wall of the limiting slider by a Phillips countersunk screw. The tip of the pointer faces the outer wall of the outer sleeve. Five uniformly distributed particle size marking lines are engraved on the outer wall of the outer sleeve along the length of the limiting groove. The corresponding powder particle size value is marked next to the particle size marking lines.

[0011] Preferably, a spiral guide groove is provided on the outer conical surface of the grinding cone, and the spiral cooling tube is fitted into the spiral guide groove. Both ends of the spiral cooling tube extend outward from the through holes opened on the side wall of the cylindrical jacket. The end of the second hose away from the spiral cooling tube is connected to a No. 2 one-way valve, and is connected to the bottom of the diversion cylinder through the No. 2 one-way valve to form a return channel for the low temperature medium.

[0012] Preferably, multiple heat sinks are fixedly connected at equal intervals along the length of the outer wall of the serpentine heat sink. The multiple heat sinks are tightly fitted to the outer wall of the serpentine heat sink and are arranged perpendicularly. A rectangular ventilation slot is opened through the top of the support plate, and the rectangular ventilation slot faces the multiple heat sinks. Several fans are detachably connected to the lower surface of the support plate by countersunk head screws. The several fans are evenly distributed along the length of the rectangular ventilation slot, and the air outlet direction of the fans faces the rectangular ventilation slot.

[0013] Preferably, the bottom of the frame plate is detachably connected to the top surface of the support plate by screws, and a lifting groove adapted to the round pin is provided on the outer periphery of the cylindrical cam. The round pin is slidably embedded in the lifting groove with a fitting gap of no more than 0.1mm. The bottom end of the rotating rod is rotatably connected to the shaft seat, and the shaft seat is connected to the top of the support plate by screws.

[0014] Preferably, a first synchronous pulley is fixedly connected to the outer periphery of the transmission rod, a second synchronous pulley is fixedly connected to the top end of the rotating rod through the frame plate, a synchronous belt is meshed between the first and second synchronous pulleys, the top of the diversion tube is connected to the lower surface of the support plate by screws and a sealing gasket, the top end of the linkage rod passes through the support plate, and a linear bearing is slidably connected to the outer surface of the linkage rod, and the bottom end of the linear bearing is connected to the upper surface of the support plate by screws.

[0015] Preferably, the top of the tray is detachably connected to the controller by bolts, and the outer wall of the cylindrical sleeve is detachably connected to the temperature sensor by a countersunk screw. The probe end of the temperature sensor penetrates the side wall of the cylindrical sleeve and extends into its interior and fits against the grinding cone. A sealing gasket is provided at the penetration point between the probe end and the cylindrical sleeve. The temperature sensor is electrically connected to the controller by a wire.

[0016] Compared with the prior art, the present invention provides a grinding device for freeze-dried leech powder, which has the following beneficial effects:

[0017] 1. This invention possesses precise and stable grinding particle size adjustment capability, effectively improving the grinding uniformity of leech freeze-dried powder; it adopts inclined plane transmission combined with directional guiding structure to convert horizontal rotation into stable vertical displacement, the adjustment process is smooth and stable without jamming or shaking, the inclined plane angle balances adjustment accuracy and transmission efficiency, can avoid the grinding parts from shifting or tilting, and ensure uniform grinding gap; at the same time, through the visual scale indication structure, it realizes intuitive and accurate adjustment and positioning of grinding particle size, and can flexibly adjust the powder particle size according to needs to meet the finished product requirements under different production scenarios.

[0018] 2. This invention achieves efficient and stable temperature control during the grinding process, effectively protecting the heat-sensitive active ingredients of the leech freeze-dried powder and significantly improving product quality. It employs a fitted cooling structure for all-around low-temperature cooling of the core grinding area, preventing localized overheating. A closed-loop circulation drive structure ensures stable circulation of the low-temperature medium, coupled with a forced air cooling design, rapidly removing heat and ensuring a sustained and stable cooling effect. Furthermore, the cooling system shares a power source with the grinding drive, eliminating the need for additional drive equipment, resulting in high integration, low energy consumption, and further improved equipment operating economy. Attached Figure Description

[0019] Figure 1 This is a perspective view of the invention from a first viewpoint;

[0020] Figure 2 This is a perspective view of the invention from a second viewpoint;

[0021] Figure 3 This is a partial cross-sectional view of the adjustable grinding component in this invention;

[0022] Figure 4 This is a perspective view of the adjustable grinding component in this invention;

[0023] Figure 5 This is a perspective view of the cooling component in this invention;

[0024] Figure 6 This is a partially exploded perspective view of the cooling component in this invention;

[0025] Figure 7For the present invention Figure 2 A magnified view of part A in the diagram;

[0026] Figure 8 For the present invention Figure 4 A magnified view of part B in the diagram.

[0027] The components include: 1. Adjustable grinding assembly; 11. Feeding hopper; 12. Cylindrical jacket; 13. Grinding cone; 14. Outer sleeve; 15. Feeding bin; 16. First wedge; 17. Second wedge; 18. Arc-shaped connecting plate; 19. Adjusting screw; 110. Vertical plate; 111. Limiting slider; 112. Limiting groove; 113. Base plate; 114. Main shaft; 115. Grinding cone; 116. Transmission rod; 117. Drive motor; 118. Support leg; 119. Support plate; 120. Impeller; 121. 1. Discharge pipe; 2. Pointer pin; 3. Cooling assembly; 4. Spiral cooling pipe; 5. First hose; 6. Second hose; 7. Serpentine heat dissipation pipe; 8. Connecting pipe; 9. First check valve; 10. Drainage tube; 11. Second check valve; 22. Piston; 23. Linkage rod; 24. Round pin; 25. Cylindrical cam; 26. Rotating rod; 27. Frame plate; 28. Heat sink; 29. ​​Fan; 20. Shaft seat; 210. Linear bearing; 211. Controller; 22. Temperature sensor. Detailed Implementation

[0028] 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.

[0029] Please see Figures 1-8The present invention provides a grinding device for freeze-dried leech powder, comprising: an adjustable grinding assembly 1, which includes a feeding hopper 11, a cylindrical sleeve 12 bolted to the bottom of the feeding hopper 11, a grinding cone 13 bolted to the inner wall of the cylindrical sleeve 12, an outer sleeve 14 slidably connected to the outer surface of the cylindrical sleeve 12, a discharge bin 15 fixedly connected to the bottom end of the outer sleeve 14, a first wedge 16 bolted to the top of the cylindrical sleeve 12, a second wedge 17 slidably connected to the inclined surface of the first wedge 16, an arc-shaped connecting plate 18 bolted to one end of the second wedge 17, and an adjustable grinding device rotatably connected to the outer surface of the arc-shaped connecting plate 18. The adjusting screw 19 has a vertical plate 110 threadedly connected to its outer surface. A limit slider 111 is fixedly connected to the outer wall of the cylindrical sleeve 12. A limit groove 112 is opened on the outer circumferential surface of the outer sleeve 14. The bottom of the discharge bin 15 is bolted to a base plate 113. A main shaft 114 is rotatably connected inside the base plate 113. A grinding cone 115 is fixedly connected to the top of the main shaft 114. A transmission rod 116 is fixedly connected to the bottom of the main shaft 114. A drive motor 117 is fixedly connected to the bottom of the transmission rod 116. A support leg 118 is fixedly connected to the bottom of the base plate 113. A support plate 119 is fixedly connected to the outer wall of the support leg 118.

[0030] Cooling assembly 2 includes a spiral cooling pipe 21, one end of which is connected to a first flexible hose 22, and the other end of which is connected to a second flexible hose 23. One end of the first flexible hose 22 is connected to a serpentine heat dissipation pipe 24. One end of the serpentine heat dissipation pipe 24 is threadedly connected to a connecting pipe 25. One end of the connecting pipe 25 is threadedly connected to a first check valve 26. One end of the first check valve 26 is threadedly connected to a diversion cylinder 27. The bottom end of the diversion cylinder 27 is threadedly connected to a second check valve 28. A piston 29 is slidably connected inside the diversion cylinder 27. A linkage rod 210 is fixedly connected to the top of the piston 29. A round pin 211 is rotatably connected to the outer circumference of the linkage rod 210 near the top. A cylindrical cam 212 is slidably connected to the outer circumference of the round pin 211. A rotating rod 213 is fixedly connected to the inner center of the cylindrical cam 212. A frame plate 214 is rotatably connected to the outer circumference of the rotating rod 213. A heat sink 215 is fixedly connected to the outer surface of the serpentine heat dissipation pipe 24.

[0031] Furthermore, the drive motor 117 is detachably connected to the lower surface of the support plate 119 by bolts, and the output shaft of the drive motor 117 is coaxially fixedly connected to the transmission rod 116 by a flexible coupling. The outer peripheral surface of the transmission rod 116 is fixedly connected to the impeller 120 inside the material discharge bin 15 by locking bolts. The impeller 120 is completely located in the inner cavity of the material discharge bin 15 and leaves a gap of 3-5mm with the inner wall of the material discharge bin 15. The discharge pipe 121 is integrally formed on the outer peripheral surface of the material discharge bin 15 near the bottom, and the discharge pipe 121 is connected to the inner cavity of the material discharge bin 15.

[0032] After adjusting the gap between the grinding cone 13 and the grinding cone 115, the raw material of freeze-dried leech powder is fed into the upper hopper 11. The raw material enters the grinding cone 13 in the cylindrical jacket 12 along the upper hopper 11. After starting the drive motor 117, the transmission rod 116 and the main shaft 114 are rotated through the flexible coupling. The grinding cone 115 at the top of the main shaft 114 rotates at high speed and cooperates with the grinding cone 13 to squeeze and grind the freeze-dried leech powder. The ground fine powder falls into the lower discharge bin 15. Since the transmission rod 116 can also drive the impeller 120 to rotate at the same time, the impeller 120 rotates in the inner cavity of the discharge bin 15 and pushes the ground powder to the integrally formed discharge pipe 121 for discharge, thus completing the continuous grinding and discharge operation of freeze-dried leech powder.

[0033] Furthermore, the inclined surface of the first wedge 16 forms an angle of 30°-45° with the horizontal plane, the inclined surface of the second wedge 17 is adapted to and slides in close contact with the inclined surface of the first wedge 16, the bottom of the vertical plate 110 is fixedly connected to the conical surface of the material drop hopper 15, and a handwheel is fixedly connected to the end of the adjusting screw 19 away from the arc-shaped connecting plate 18.

[0034] Furthermore, two limiting sliders 111 are fixedly connected to the outer wall of the cylindrical sleeve 12, which are symmetrically arranged around its axis. The two limiting sliders 111 are of the same size and are positioned opposite each other. The limiting sliders 111 correspond one-to-one with the two limiting grooves 112 opened on the outer circumferential surface of the outer sleeve 14 and slide in cooperation.

[0035] By rotating the handwheel at one end of the adjusting screw 19, the adjusting screw 19 moves axially within the vertical plate 110, thereby pushing the arc-shaped connecting plate 18 and the second wedge 17 to move horizontally. The second wedge 17 slides along the matching inclined surface of the first wedge 16, using the 30°-45° inclined surface to convert the horizontal thrust into a vertical lifting force, driving the first wedge 16 and the cylindrical sleeve 12 to move up and down as a whole. Two limiting sliders 111 symmetrically arranged on the outer wall of the cylindrical sleeve 12 slide directionally along the two limiting grooves 112 on the outer sleeve 14, ensuring that the cylindrical sleeve 12 does not deviate when vertically lifting and lowering. At the same time, the pointer 122 on the limiting slider 111 moves synchronously with the cylindrical sleeve 12, with the needle tip pointing to the particle size marking line distributed along the limiting groove 112 on the outer wall of the outer sleeve 14. This allows for precise adjustment and positioning of the gap between the grinding cone 13 and the grinding cone 115 inside the cylindrical sleeve 12, achieving precise adjustment of the grinding particle size.

[0036] Furthermore, a pointer 122 is detachably connected to the side wall of the limiting slider 111 via a Phillips countersunk screw. The tip of the pointer 122 faces the outer wall of the outer sleeve 14. Five evenly distributed particle size marking lines are engraved on the outer wall of the outer sleeve 14 along the length of the limiting groove 112. The corresponding powder particle size values ​​of 80 mesh to 120 mesh are marked next to the particle size marking lines.

[0037] By employing a gap adjustment method that utilizes inclined plane transmission of the first wedge block 16 and the second wedge block 17, and guides and coordinates the symmetrical limiting slider 111 and the limiting groove 112 with particle size scale indication, horizontal rotation can be converted into stable vertical displacement. The adjustment process is smooth and stable without any jamming or shaking. The 30°-45° inclined plane angle balances adjustment accuracy and transmission efficiency. The cooperation between the symmetrical limiting slider 111 and the limiting groove 112 can prevent the cylindrical jacket 12 from shifting or tilting, ensuring that the gap between the grinding cone 13 and the grinding cone 115 is uniform. The pointer 122 and the 80-120 mesh scale lines provide visual and precise positioning, making the grinding particle size adjustment intuitive, accurate, and repeatable, effectively improving the uniformity of grinding leech freeze-dried powder and the stability of finished product quality.

[0038] Furthermore, a spiral guide groove is provided on the outer conical surface of the grinding cone 13, and the spiral cooling tube 21 is fitted into the spiral guide groove. Both ends of the spiral cooling tube 21 extend outward from the through holes opened on the side wall of the cylindrical jacket 12. The end of the second hose 23 away from the spiral cooling tube 21 is connected to the second one-way valve 28, and is connected to the bottom of the diversion tube 27 through the second one-way valve 28 to form a return channel for the low temperature medium.

[0039] Furthermore, multiple heat sinks 215 are fixedly connected at equal intervals along the length of the outer wall of the serpentine heat pipe 24. The multiple heat sinks 215 are all tightly attached to the outer wall of the serpentine heat pipe 24 and are vertically arranged. A rectangular ventilation slot is opened through the top of the support plate 119, and the rectangular ventilation slot faces the multiple heat sinks 215. Several fans 216 are detachably connected to the lower surface of the support plate 119 by cross countersunk screws. The several fans 216 are evenly distributed along the length of the rectangular ventilation slot, and the air outlet direction of the fans 216 faces the rectangular ventilation slot.

[0040] As the transmission rod 116 rotates, it also drives the first synchronous pulley connected to its outer surface to rotate. The first synchronous pulley drives the second synchronous pulley and the rotating rod 213 to rotate via a synchronous belt. The rotating rod 213 drives the cylindrical cam 212 to rotate. During the rotation of the cylindrical cam 212, the lifting groove on its outer circumference drives the pin 112 to move up and down reciprocally, which in turn drives the linkage rod 210 and the piston 29 to move up and down reciprocally within the diversion tube 27. This, in conjunction with the first one-way valve 26 and the second one-way valve 28, enables the directional delivery of the cryogenic medium. The cryogenic medium enters the outer conical surface of the grinding cone 13 through the first hose 22. The spiral cooling pipe 21 inside the spiral guide groove provides full-process low-temperature cooling to the grinding cone 13. After absorbing heat, the medium flows back to the guide tube 27 through the second hose 23 and the second one-way valve 28, and then enters the serpentine heat dissipation pipe 24. Multiple heat dissipation fins 215 on the outer wall of the serpentine heat dissipation pipe 24 rapidly expand the heat dissipation area. Multiple fans 216 below the support plate 119 continuously deliver forced air cooling to the heat dissipation fins 215 through the rectangular ventilation slot, so that the low-temperature medium after heating can be quickly cooled down and recycled. This ensures continuous and stable temperature control during the grinding of leech freeze-dried powder and protects the heat-sensitive active ingredients.

[0041] Furthermore, the bottom of the frame plate 214 is detachably connected to the top surface of the support plate 119 by screws. The outer periphery of the cylindrical cam 212 is provided with a lifting groove that matches the round pin 211. The round pin 211 is slidably embedded in the lifting groove with a clearance of no more than 0.1mm. The bottom end of the rotating rod 213 is rotatably connected to the bearing seat 217, which is connected to the top of the support plate 119 by screws.

[0042] Furthermore, a first synchronous pulley is fixedly connected to the outer periphery of the transmission rod 116, the top of the rotating rod 213 passes through the frame plate 214 and is fixedly connected to a second synchronous pulley, the first and second synchronous pulleys are meshed with a synchronous belt, the top of the diversion tube 27 is connected to the lower surface of the support plate 119 by screws and a sealing gasket, the top of the linkage rod 210 passes through the support plate 119, and the outer surface of the linkage rod 210 is slidably connected to a linear bearing 218, the bottom end of the linear bearing 218 is connected to the upper surface of the support plate 119 by screws.

[0043] The cooling component 2 adopts a structure in which a spiral cooling pipe 21 is fitted and embedded in the spiral guide groove on the outer conical surface of the grinding cone 13. This structure enables all-round, high-efficiency low-temperature cooling of the grinding core area, avoiding local overheating. Combined with a circulation drive structure consisting of a first one-way valve 26, a second one-way valve 28, a diversion tube 27, and a piston 29, it can achieve stable closed-loop circulation of the low-temperature medium. The serpentine heat pipe 24, combined with the heat sink 215 and the fan 216, forms a forced air cooling design that can quickly remove heat from the circulating medium, ensuring a long-lasting and stable cooling effect. The overall structure shares a power source with the grinding drive, eliminating the need for additional drive equipment. It features high integration and low energy consumption, effectively preventing the heat-sensitive active ingredients of the lyophilized leech powder from being deactivated due to high temperatures during the grinding process, thus significantly improving product quality.

[0044] Furthermore, the top of the tray 119 is detachably connected to the controller 3 by bolts, and the outer wall of the cylindrical sleeve 12 is detachably connected to the temperature sensor 4 by a cross countersunk screw. The probe end of the temperature sensor 4 penetrates the side wall of the cylindrical sleeve 12 and extends into its interior and fits against the grinding cone 13. A sealing gasket is provided at the penetration point between the probe end and the cylindrical sleeve 12. The temperature sensor 4 is electrically connected to the controller 3 through a wire.

[0045] The controller 3 mounted on the tray 119 works in conjunction with the temperature sensor 4 mounted on the cylindrical jacket 12. The probe of the temperature sensor 4 is in close contact with the grinding cone 13 and collects the temperature data of the grinding area in real time. The signal is transmitted to the controller 3 through the wire. Once the temperature exceeds the threshold set by the controller 3, the controller 3 immediately starts the fan 216. Conversely, if the temperature does not exceed the threshold, the fan 216 will not be started. This effectively reduces the energy consumption of the equipment while ensuring the cooling effect, realizing intelligent temperature control and on-demand cooling. It also prevents the active ingredients of the freeze-dried leech powder from being deactivated due to overheating, improves the quality of the product, and makes the automation and operating economy of the entire grinding device higher.

[0046] In use, firstly, by rotating the handwheel at one end of the adjusting screw 19, the adjusting screw 19 is moved axially within the vertical plate 110, pushing the arc-shaped connecting plate 18 and the second wedge 17 to move horizontally. The second wedge 17 slides along the fitting inclined surface of the first wedge 16, converting the horizontal thrust into a vertical lifting force, which drives the first wedge 16 and the cylindrical sleeve 12 to move up and down as a whole. The limiting slider 111 on the outer wall of the cylindrical sleeve 12 slides directionally along the limiting groove 112 of the outer sleeve 14, while the pointer 122 on the limiting slider 111 guides the movement of the cylinder. The particle size markings on the outer wall of the outer sleeve 14 are precisely adjusted to determine the grinding particle size by carefully adjusting the gap between the grinding cone 13 and the grinding cone 115. After adjustment, the freeze-dried leech powder raw material is fed into the upper hopper 11. The raw material enters the grinding cone 13 inside the cylindrical jacket 12 along the upper hopper 11. The drive motor 117 on the pallet 119 is started. The drive motor 117 drives the transmission rod 116 and the main shaft 114 to rotate through the flexible coupling. The grinding cone 115 at the top of the main shaft 114 rotates at high speed and cooperates with the grinding cone 13 to grind the raw material. The grinding process involves extrusion and grinding, after which the fine powder falls into the feeding hopper 15. Simultaneously, the transmission rod 116 drives the impeller 120 inside the feeding hopper 15 to rotate, pushing the powder to the discharge pipe 121 for discharge. During the grinding process, the temperature sensor 4 on the cylindrical jacket 12 collects the temperature data of the grinding cone 13 in real time and transmits it to the controller 3. If the temperature exceeds the threshold, the controller 3 starts the fan 216 below the pallet 119. At the same time, the transmission rod 116 drives the rotating rod 213 to rotate through the first synchronous pulley and synchronous belt. The rotating rod 213 drives the cylindrical cam 2. Rotation of valve 12 drives piston 29 to reciprocate up and down inside guide tube 27 via pin 211 and linkage rod 210. This, in conjunction with check valve 26 and check valve 28, enables the circulation of low-temperature medium. The low-temperature medium enters the spiral cooling pipe 21 outside grinding cone 13 through the first hose 22 for cooling. After absorbing heat, the medium flows back to guide tube 27 through the second hose 23 and then enters serpentine heat dissipation pipe 24. It is then cooled by forced air cooling through heat sink 215 and fan 216 and recycled, achieving intelligent temperature control and continuous operation in the grinding process.

[0047] 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 grinding device for freeze-dried leech powder, characterized in that, include: An adjustable grinding assembly (1) includes a feeding hopper (11), the bottom of which is bolted to a cylindrical sleeve (12). A grinding cone (13) is bolted to the inner wall of the cylindrical sleeve (12), and an outer sleeve (14) is slidably connected to the outer surface of the cylindrical sleeve (12). A material discharge bin (15) is fixedly connected to the bottom end of the outer sleeve (14). A first wedge (16) is bolted to the top of the cylindrical sleeve (12), and a second wedge (17) is slidably connected to the inclined surface of the first wedge (16). An arc-shaped connecting plate (18) is bolted to one end of the second wedge (17), and an adjusting screw (19) is rotatably connected to the outer surface of the arc-shaped connecting plate (18). The outer surface of the cylindrical sleeve (12) is threaded with a vertical plate (110). A limit slider (111) is fixedly connected to the outer wall of the cylindrical sleeve (12). A limit groove (112) is opened on the outer circumferential surface of the outer sleeve (14). The bottom of the discharge bin (15) is bolted to a base plate (113). The inside of the base plate (113) is rotatably connected to a main shaft (114). The top of the main shaft (114) is fixedly connected to a grinding cone (115). The bottom of the main shaft (114) is fixedly connected to a transmission rod (116). The bottom of the transmission rod (116) is fixedly connected to a drive motor (117). The bottom of the base plate (113) is fixedly connected to a support leg (118). The outer wall of the support leg (118) is fixedly connected to a support plate (119). Cooling assembly (2) includes a spiral cooling pipe (21), one end of which is connected to a first flexible hose (22), and the other end of which is connected to a second flexible hose (23). One end of the first flexible hose (22) is connected to a serpentine heat dissipation pipe (24), one end of which is threaded to a connecting pipe (25). One end of the connecting pipe (25) is threaded to a first one-way valve (26), one end of which is threaded to a drain cylinder (27), and the bottom end of the drain cylinder (27) is threaded to a second one-way valve. The valve (28) is slidably connected to the inside of the drain tube (27), and a piston (29) is slidably connected to the top of the piston (29). A linkage rod (210) is fixedly connected to the top of the linkage rod (210). A round pin (211) is rotatably connected to the outer peripheral surface of the linkage rod (210) near the top. A cylindrical cam (212) is slidably connected to the outer peripheral surface of the round pin (211). A rotating rod (213) is fixedly connected to the inner center of the cylindrical cam (212). A frame plate (214) is rotatably connected to the outer peripheral surface of the rotating rod (213). A heat sink (215) is fixedly connected to the outer surface of the serpentine heat pipe (24).

2. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: The drive motor (117) is detachably connected to the lower surface of the support plate (119) by bolts, and the output shaft of the drive motor (117) is coaxially fixedly connected to the transmission rod (116) by a flexible coupling. The outer circumferential surface of the transmission rod (116) is located inside the material drop hopper (15) and is fixedly connected to an impeller (120) by locking bolts. The impeller (120) is completely located in the inner cavity of the material drop hopper (15) and leaves a gap of 3-5mm with the inner wall of the material drop hopper (15). The outer circumferential surface of the material drop hopper (15) is integrally formed with a discharge pipe (121) near the bottom. The discharge pipe (121) is connected to the inner cavity of the material drop hopper (15).

3. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: The inclined surface of the first wedge (16) forms an angle of 30°-45° with the horizontal plane. The inclined surface of the second wedge (17) is adapted to and slides in close contact with the inclined surface of the first wedge (16). The bottom of the vertical plate (110) is fixedly connected to the conical surface of the material drop hopper (15). A handwheel is fixedly connected to the end of the adjusting screw (19) away from the arc-shaped connecting plate (18).

4. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: Two limiting sliders (111) are fixedly connected to the outer wall of the cylindrical sleeve (12) and are symmetrically arranged around its axis. The two limiting sliders (111) are identical in size and opposite in position. The limiting sliders (111) correspond one-to-one with the two limiting grooves (112) opened on the outer circumference of the outer sleeve (14) and slide together.

5. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: A pointer (122) is detachably connected to the side wall of the limiting slider (111) by a cross countersunk screw. The tip of the pointer (122) faces the outer wall of the outer sleeve (14). Five uniformly distributed particle size marking lines are engraved on the outer wall of the outer sleeve (14) along the length of the limiting groove (112). The corresponding powder particle size value (80 mesh-120 mesh) is marked next to the particle size marking lines.

6. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: A spiral guide groove is provided on the outer conical surface of the grinding cone (13). The spiral cooling tube (21) is fitted into the spiral guide groove. Both ends of the spiral cooling tube (21) extend outward from the through holes opened on the side wall of the cylindrical jacket (12). The end of the second hose (23) away from the spiral cooling tube (21) is connected to the second one-way valve (28), and is connected to the bottom of the diversion tube (27) through the second one-way valve (28) to form a return channel for the low temperature medium.

7. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: Multiple heat sinks (215) are fixedly connected at equal intervals along the length of the outer wall of the serpentine heat sink (24). The multiple heat sinks (215) are all tightly attached to the outer wall of the serpentine heat sink (24) and are vertically arranged. A rectangular ventilation slot is opened through the top of the support plate (119). The rectangular ventilation slot faces the multiple heat sinks (215). Several fans (216) are detachably connected to the lower surface of the support plate (119) by cross countersunk screws. The several fans (216) are evenly distributed along the length of the rectangular ventilation slot, and the air outlet direction of the fans (216) faces the rectangular ventilation slot.

8. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: The bottom of the frame plate (214) is detachably connected to the top surface of the support plate (119) by screws. The outer periphery of the cylindrical cam (212) is provided with a lifting groove that matches the round pin (211). The round pin (211) is slidably embedded in the lifting groove with a clearance of no more than 0.1mm. The bottom end of the rotating rod (213) is rotatably connected to the bearing seat (217). The bearing seat (217) is connected to the top of the support plate (119) by screws.

9. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: A first synchronous pulley is fixedly connected to the outer periphery of the transmission rod (116). The top end of the rotating rod (213) passes through the frame plate (214) and is fixedly connected to a second synchronous pulley. A synchronous belt meshes between the first and second synchronous pulleys. The top of the diversion tube (27) is connected to the lower surface of the support plate (119) by screws and a sealing gasket. The top end of the linkage rod (210) passes through the support plate (119), and a linear bearing (218) is slidably connected to the outer surface of the linkage rod (210). The bottom end of the linear bearing (218) is connected to the upper surface of the support plate (119) by screws.

10. The grinding apparatus for freeze-dried leech powder according to claim 1, characterized in that: The top of the tray (119) is detachably connected to the controller (3) by bolts. The outer wall of the cylindrical sleeve (12) is detachably connected to the temperature sensor (4) by a cross countersunk screw. The probe end of the temperature sensor (4) penetrates the side wall of the cylindrical sleeve (12) and extends into its interior and fits against the grinding cone (13). A sealing gasket is provided at the penetration point between the probe end and the cylindrical sleeve (12). The temperature sensor (4) is electrically connected to the controller (3) through a wire.

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