Pennywort breaking device

Abstract

The application belongs to the technical field of production of centella asiatica, and discloses a centella asiatica crushing device, which comprises a crushing tank, a power tank is fixedly installed at the bottom end of the crushing tank, a power assembly is arranged in the power tank, a cover plate is movably installed at the top end of the crushing tank, and main shafts are arranged at the top end of the power assembly and on both sides thereof. The application is rotated to the outside at the same time, the rotation directions of the main shafts on the left and right sides are always opposite, and the reversing operation can be performed in a cycle. In the whole crushing process, when the centella asiatica rhizomes are wound on the outer surface of the crushing knife, the crushing knife is stopped and then reversely rotated to throw away the wound centella asiatica. Through continuous and cyclic rotation, the phenomenon of jamming caused by too much winding of the centella asiatica during crushing of the traditional device can be effectively avoided. The frequency of maintenance of the operator is reduced, the possibility of winding is reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] This invention belongs to the field of centella asiatica production technology, specifically a centella asiatica crushing device. Background Technology

[0002] Centella asiatica is a plant belonging to the Santalaceae family and the Centella genus. It is a perennial, delicate herb, 15-40 cm tall, with the entire plant somewhat covered in a white powder and hairless; the stems are slender, clustered, sparsely branched above the base, ascending obliquely, and have longitudinal grooves; Centella asiatica contains flavonoid glycosides, mannitol, and other components, and has the effects of clearing heat and relieving summer heat. It can treat heatstroke, tonsillitis, back pain, and other symptoms, and is also used as a diuretic. Due to its wide distribution, ease of acquisition, and good medicinal effects, Centella asiatica is widely used in various traditional Chinese medicine preparations. Since Centella asiatica is in the form of rhizomes after harvesting and cannot be used directly, it is often pulverized during the processing of preparations containing Centella asiatica to make it easier to process.

[0003] Since centella asiatica generally contains roots, stems, and leaves after harvesting, existing technologies often use crushing devices to crush it for effective utilization. Common crushing devices for centella asiatica typically include a crushing tank with pulverizing blades installed inside, driven by an external motor or other device. The high-speed rotation of the pulverizing blades crushes the centella asiatica, which is no different from conventional crushing devices used for other products. However, when this structural design is applied to centella asiatica, the presence of its roots and stems generates a certain centripetal force when the pulverizing blades rotate at high speed in the same direction, causing some roots and stems to become entangled on the surface of the pulverizing blades. When too many roots and stems become entangled, the pulverizing blades will jam, requiring the machine to be stopped and the operator to assist in cleaning. Obviously, this will have a certain impact on the crushing efficiency.

[0004] Due to the limited volume of the grinding tank, centella asiatica gradually enters the interior of the grinding tank during the grinding process. An external uniform feeding device is often used to feed centella asiatica. However, when using this feeding method, it is difficult to directly control the amount of centella asiatica entering. Often, a large amount of uncrushed centella asiatica enters the grinding tank because the centella asiatica inside the grinding tank is not completely crushed, which increases the crushing pressure on the grinding blades and affects the overall crushing effect. Obviously, it is very necessary to control the amount of centella asiatica entering based on the crushing effect. Summary of the Invention

[0005] The purpose of this invention is to provide a crushing device for *Centella asiatica* to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a *Centella asiatica* crushing device, comprising a crushing tank, a power tank fixedly installed at the bottom of the crushing tank, a power assembly inside the power tank, a cover plate movably installed at the top of the crushing tank, two main shafts on both sides of the top of the power assembly, both located inside the crushing tank, mounting sleeves fixedly fitted at equal intervals on the outer side of the main shafts, crushing blades fixedly installed at equal angles on the outer side of the mounting sleeves, a material limiting assembly fixedly installed at the top of each of the two main shafts below the cover plate, connecting rods fixedly installed on both the front and rear sides of the bottom of the crushing tank cavity, the top of the connecting rods connected to the bottom of the cover plate, a through groove fully penetrating the bottom of the crushing tank, and a cleaning assembly located inside the crushing tank above the through groove.

[0007] Before using the device, place it on a flat surface and install a suitable buffer device as needed. Ensure that the inside of the crushing tank is dry. Turn on the power and use an external feeding device to feed an appropriate amount of centella asiatica into the crushing tank through the top for crushing.

[0008] As a further technical solution of the present invention, the power assembly includes a main motor, the bottom end of which is connected to the bottom end of the inner cavity of the power tank, the output shaft of the main motor is driven by a coupling, and the top end of the coupling is driven by a power rod, which can move circumferentially relative to the main motor.

[0009] As a further technical solution of the present invention, the power rod has a sliding groove inside, a slider is movably installed inside the sliding groove, a fixed block is obliquely installed at the bottom end of the slider, a ball is movably connected to the inner side of the fixed block through a connecting seat, a movable groove is opened at the top end of the fixed block, and a threaded rod is threadedly connected to the end of the power rod away from the main motor, and the bottom end of the threaded rod contacts the side of the slider.

[0010] During crushing, the main motor starts and drives the power rod to rotate circumferentially through the coupling, providing power for crushing. By rotating the threaded rod, the internal thread groove at one end of the power rod causes the threaded rod to move left and right, that is, the bottom end of the threaded rod moves towards the inner side of the power rod. At this time, the thrust of the threaded rod pushes the slider relative to the groove, and drives the fixed block and the ball at its bottom to slide. At this time, the initial position of the ball inside the groove is changed. By adjusting the relative position of the slider in conjunction with the high-speed rotation of the threaded rod, the contact time between the ball and the groove can be changed. The longer the contact time, the shorter the time the two driven gears stop rotating, and vice versa, thereby changing the crushing efficiency.

[0011] As a further technical solution of the present invention, the power assembly also includes driven gears, the number of which is two and is movably connected to the bottom end of the crushing tank. The middle part of the top of the driven gear is connected to the bottom end of the two main shafts, and the two driven gears are meshed with each other.

[0012] As a further technical solution of the present invention, a lever is fixedly connected to the middle of the bottom end of each of the two driven gears. The other end of the lever on the left is located at the lower left corner, and the other end of the lever on the right is located at the upper right corner. Grooves are provided at both the upper and lower ends of the two levers.

[0013] As a further technical solution of the present invention, the diameter of the ball is the same as the inner diameter of the groove, the outer side of the ball is in contact with the inner side of the groove, and the ball can roll relative to the groove.

[0014] When the power rod rotates circumferentially under the action of the main motor, as one end of the power rod approaches the left-hand lever, the ball can contact the groove due to its arc motion as the power rod continues to rotate. With the continued rotation of the power rod, the left-hand lever is deflected to the bottom. At this time, the driven gear on the left rotates counterclockwise, and the driven gear meshing with it rotates clockwise. The lever at the bottom of the right-hand driven gear deflects to the lower right. The continued rotation of the power rod causes the ball to slide relative to the groove, and the sliding direction is towards the end away from the middle of the driven gear, until the ball leaves the left-hand groove. At this time, the two driven gears come to a stop. When the threaded rod moves closer to the right-hand lever and contacts the groove... At this time, under the continuous rotation of the power rod, the lever deflects to the upper right corner, driving the driven gear on the right to rotate counterclockwise. At this time, the driven gear on the left rotates clockwise, and the lever on the left deflects to the upper left corner until the ball leaves the lever on the right. Then the two driven gears stop rotating again until they re-contact the lever on the left, completing one cycle. In this cycle, the two driven gears first rotate inward, then stop or rotate outward again. At the same time, the pulverizing blades on the outer side of the two main shafts at the top can first rotate inward relative to each other to pulverize the centella asiatica, then stop for a period of time and rotate outward relative to each other again to pulverize the centella asiatica, completing the entire pulverizing process.

[0015] By utilizing the continuous rotation of the power rod, the rotation is transformed into two main shafts rotating simultaneously inward and then simultaneously outward after a period of pause. The rotation directions of the left and right main shafts are always opposite and can be reversed within a cycle. During the entire crushing process, if the roots and stems of the Chinese tallow tree become entangled on the outer surface of the crushing blade, the blade will rotate in the opposite direction after stopping to throw off the entangled Chinese tallow. Through continuous cyclical rotation, the jamming phenomenon caused by excessive entanglement of Chinese tallow is effectively avoided in traditional devices. This not only reduces the frequency of maintenance by operators and lowers the possibility of entanglement, but also significantly improves the crushing efficiency of Chinese tallow.

[0016] As a further technical solution of the present invention, the material limiting component includes a mounting block, the bottom end of the mounting block is fixedly connected to the top end of the main shaft, and a fixing sleeve is fixedly installed at equal angles on the outer side of the mounting block. The fixing sleeve is movably fitted with a movable plate inside each fixing sleeve, and the movable plate can slide relative to the inner cavity of the fixing sleeve.

[0017] As a further technical solution of the present invention, one end of the movable plate is fixedly connected to a movable rod located inside the fixed sleeve, one end of the movable rod passes through the fixed sleeve away from the mounting block and a mass block is fixedly installed thereon, the mass block being made of lead.

[0018] As a further technical solution of the present invention, the material limiting component also includes a rubber ring, the outer side of the rubber ring is connected to the outer side of the mass block, and crushing nails are fixedly installed on the outer side of the rubber ring at equal angles. A limit spring is fixedly installed at the bottom end of the inner cavity of the fixed sleeve, and the other end of the limit spring is fixedly connected to the bottom end of the movable plate.

[0019] When the main shaft rotates following the driven gear at the bottom, the limiting component at the top rotates accordingly. When the amount of *Centella asiatica* inside the crushing tank is not completely crushed and the amount of *Centella asiatica* to be injected needs to be reduced, the rotational speed of the main shaft can be increased by increasing the speed of the main motor. When the rotational speed of the main shaft increases, the centrifugal force on the mass block located on the inner side of the rubber ring increases, and the limiting spring located inside the fixed sleeve is stretched, which drives the movable rod and the mass block to move towards the outer side of the mounting block. At this time, the inner side of the rubber ring is subjected to tension from multiple mass blocks, and the entire rubber ring is stretched open, and the diameter of the rubber ring increases. At this time, the distance between the two limiting components decreases, the feeding space at the top of the crushing tank decreases, and the amount of *Centella asiatica* fed decreases. Conversely, the amount of *Centella asiatica* fed can be increased.

[0020] By utilizing the continuous rotation of the power rod to achieve relative rotation of two driven gears and cyclic reversal rotation, and by using the centrifugal force generated during high-speed rotation to change the relative positions of multiple mass blocks, thereby changing the diameter of the rubber ring, and using two material limiting components to change the gap, the crushing pins on the outer side of the rubber ring can also rotate at high speed to pre-crush the incoming centella asiatica to reduce the subsequent crushing pressure. This allows the feed speed to be adjusted as needed to adapt to the crushing requirements, avoiding the problem of poor crushing effect caused by the inability of traditional devices to adjust the feed speed according to the crushing effect. It realizes the function of autonomously adjusting the feed speed according to the actual crushing effect to meet the crushing requirements, and is suitable for use when crushing centella asiatica in batches.

[0021] As a further technical solution of the present invention, the cleaning component includes an extension rod, which passes through the bottom end of the through groove and is movably engaged with the movable groove at the top of the fixed block. A sealing ring is fixedly installed at the top of the extension rod, and a cleaning brush is fixedly installed at the top of the sealing ring above the extension rod. The cleaning brush contacts the inner wall of the pulverizing tank, and the sealing ring is located above the through groove and completely blocks the top of the through groove.

[0022] During the crushing process, the sealing ring remains above the through slot to block the grass from falling through. Simultaneously, the extension rod can be displaced relative to the movable slot at the top of the fixed block when the relative position of the fixed block is adjusted. During the crushing process, the continuous rotation of the power rod drives the extension rod at its top to rotate through the fixed block. At this time, the extension rod can move circumferentially relative to the crushing tank, while the sealing ring can continue to rotate. Finally, the cleaning brush can move circumferentially along with it, allowing it to move circumferentially relative to the inner wall of the crushing tank and clean the inner surface of the crushing tank with the friction of the cleaning brush to prevent adhesion.

[0023] By utilizing a continuously circumferentially moving power rod to drive the continuous circumferential movement of the cleaning brush, the inner wall of the pulverizing tank is self-cleaned while continuously pulverizing, without the need for an additional power source and in sync with the pulverizing process. This avoids the problem of traditional devices where centella asiatica easily adheres to the inner wall during pulverization, requiring machine shutdown for cleaning. It enables simultaneous pulverization and cleaning, completing the autonomous cleaning process. With a high degree of automation, it can reduce the frequency of device maintenance and manual operation, making it suitable for widespread use.

[0024] The beneficial effects of this invention are as follows:

[0025] 1. This invention utilizes the continuous rotation of a power rod to transform it into two main shafts rotating simultaneously inward and then simultaneously outward after a period of pause. The rotation directions of the left and right main shafts are always opposite and can be reversed within a cycle. During the entire crushing process, if the roots and stems of the *Centella asiatica* become entangled on the outer surface of the crushing blade, the blade can be reversed after stopping to throw off the entangled *Centella asiatica*. Through continuous cyclical rotation, the jamming phenomenon caused by excessive entanglement of *Centella asiatica* during crushing can be effectively avoided in traditional devices. This not only reduces the frequency of maintenance by operators and lowers the possibility of entanglement, but also significantly improves the crushing efficiency of *Centella asiatica*.

[0026] 2. This invention utilizes the continuous rotation of a power rod to achieve relative rotation of two driven gears and cyclical reversal rotation. The centrifugal force generated during high-speed rotation changes the relative positions of multiple mass blocks, thereby altering the diameter of the rubber ring. Two material-limiting components change the gap, and the crushing pins on the outer side of the rubber ring rotate at high speed to pre-crush the incoming *Tetracentron sinense*, reducing subsequent crushing pressure. This allows for adjustment of the feeding speed to meet crushing requirements, avoiding the problem of poor crushing results caused by traditional devices that cannot adjust the feeding speed based on the crushing effect. It achieves the function of autonomously adjusting the feeding speed according to the actual crushing effect to meet crushing needs, making it suitable for batch crushing of *Tetracentron sinense*.

[0027] 3. This invention utilizes a continuously circumferentially moving power rod to drive the continuous circumferential movement of the cleaning brush, enabling self-cleaning of the inner wall of the pulverizing tank while continuously pulverizing. This eliminates the need for an additional power source and maintains synchronization with the pulverizing process, avoiding the problem of traditional devices where centella asiatica easily adheres to the inner wall during pulverization, requiring machine shutdown for cleaning. It achieves simultaneous pulverization and cleaning, completing the autonomous cleaning process with a high degree of automation, reducing the frequency of device maintenance and manual operation, making it suitable for widespread use. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the hidden power tank structure of the present invention;

[0030] Figure 3 This is a cross-sectional view of the internal structure of the pulverizing tank of the present invention;

[0031] Figure 4 This is a schematic diagram showing the cooperation between the main shaft and the material limiting component structure of the present invention;

[0032] Figure 5 This is a separate schematic diagram of the material limiting component structure of the present invention;

[0033] Figure 6 This is a diagram showing the assembly of the cleaning component and the power component of the present invention.

[0034] Figure 7 This is a separate schematic diagram of the power component structure of the present invention;

[0035] Figure 8 This is an exploded view of the lever and drive lever structure of the present invention;

[0036] Figure 9 This is an exploded view of the internal structure of the power rod of the present invention.

[0037] In the diagram: 1. Crushing tank; 2. Power tank; 3. Power assembly; 301. Main motor; 302. Coupling; 303. Power rod; 304. Slide groove; 305. Slider; 306. Threaded rod; 307. Fixing block; 308. Ball bearing; 309. Driven gear; 3010. Lever; 3011. Groove; 4. Through groove; 5. Cleaning assembly; 501. Extension rod; 502. Sealing ring; 503. Cleaning brush; 6. Cover plate; 7. Connecting rod; 8. Main shaft; 9. Mounting sleeve; 10. Crushing blade; 11. Material limiting assembly; 111. Mounting block; 112. Fixing sleeve; 113. Movable plate; 114. Movable rod; 115. Mass block; 116. Limiting spring; 117. Rubber ring; 118. Crushing nail. Detailed Implementation

[0038] 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.

[0039] like Figure 1 and Figure 2 as well as Figure 3 As shown in the embodiment of the present invention, the *Centella asiatica* crushing device includes a crushing tank 1, a power tank 2 fixedly installed at the bottom of the crushing tank 1, a power assembly 3 inside the power tank 2, a cover plate 6 movably installed at the top of the crushing tank 1, two main shafts 8 on both sides of the top of the power assembly 3, both located inside the crushing tank 1, mounting sleeves 9 fixedly fitted at equal intervals on the outer side of the main shafts 8, crushing blades 10 fixedly installed at equal angles on the outer side of the mounting sleeves 9, a material limiting assembly 11 fixedly installed at the top of the two main shafts 8 below the cover plate 6, connecting rods 7 fixedly installed on the front and rear sides of the bottom of the inner cavity of the crushing tank 1, the top of the connecting rods 7 connected to the bottom of the cover plate 6, a through groove 4 completely penetrating the bottom of the crushing tank 1, and a cleaning assembly 5 located inside the crushing tank 1 above the through groove 4.

[0040] Before using the device, it can be placed on a flat surface and a suitable buffer device can be installed as needed. At the same time, it is necessary to ensure that the inside of the crushing tank 1 is dry. Then, the power supply of the device is turned on, and an appropriate amount of centella asiatica is fed into the inside of the crushing tank 1 through the top of the crushing tank 1 using an external feeding device for crushing.

[0041] like Figure 2 and Figure 7 as well as Figure 9 As shown, the power assembly 3 includes a main motor 301. The bottom end of the main motor 301 is connected to the bottom end of the inner cavity of the power tank 2. The output shaft of the main motor 301 is driven by a coupling 302. The top end of the coupling 302 is driven by a power rod 303. The power rod 303 can move circumferentially relative to the main motor 301. A sliding groove 304 is provided inside the power rod 303. A slider 305 is movably installed inside the sliding groove 304. A fixing block 307 is obliquely installed at the bottom end of the slider 305. A ball bearing 308 is movably connected to the inner side of the fixing block 307 through a connecting seat. A movable groove is provided at the top end of the fixing block 307. A threaded rod 306 is threadedly connected to the end of the power rod 303 away from the main motor 301. The bottom end of the threaded rod 306 is in contact with the side of the slider 305.

[0042] During crushing, the main motor 301 starts and drives the power rod 303 to rotate circumferentially through the coupling 302, providing power for crushing. By rotating the threaded rod 306, the threaded groove inside one end of the power rod 303 can drive the threaded rod 306 to move left and right, that is, drive the bottom end of the threaded rod 306 to move towards the inner side of the power rod 303. At this time, under the thrust of the threaded rod 306, the slider 305 is pushed to slide relative to the groove 304, and drives the fixed block 307 and the ball 308 at its bottom end to slide. At this time, the initial position of the ball 308 inside the groove 3011 is changed. By adjusting the relative position of the slider 305 in conjunction with the high-speed rotation of the threaded rod 306, the contact time between the ball 308 and the groove 3011 can be changed. The longer the contact time, the shorter the time the two driven gears 309 stop rotating, and vice versa, thereby changing the crushing efficiency.

[0043] like Figure 3 and Figure 7 as well as Figure 8As shown, the power assembly 3 also includes driven gears 309. There are two driven gears 309, which are movably connected to the bottom of the crushing tank 1. The middle part of the top of the driven gear 309 is connected to the bottom of the two main shafts 8. The two driven gears 309 are meshed with each other. A lever 3010 is fixedly connected to the middle of the bottom of each of the two driven gears 309. The other end of the lever 3010 on the left is located at the lower left corner, and the other end of the lever 3010 on the right is located at the upper right corner. Grooves 3011 are provided at both the upper and lower ends of the two levers 3010. The diameter of the ball 308 is the same as the inner diameter of the groove 3011. The outer side of the ball 308 is in contact with the inner side of the groove 3011, and the ball 308 can roll relative to the groove 3011.

[0044] First embodiment:

[0045] When the power rod 303 rotates circumferentially under the action of the main motor 301, when one end of the power rod 303 approaches the left-side lever 3010, the ball 308 can contact the groove 3011 under the action of its arc motion as the power rod 303 continues to rotate. With the continuous rotation of the power rod 303, the left-side lever 3010 can be driven to deflect towards the bottom. At this time, the left-side driven gear 309 rotates counterclockwise, and the meshing driven gear 309 rotates clockwise. The lever 3010 at the bottom of the right-side driven gear 309 deflects to the lower right corner. The continuous rotation of the power rod 303 will cause the ball 308 to slide relative to the groove 3011, and the sliding direction is towards the end away from the middle of the driven gear 309, until the ball 308 leaves the left-side groove 3011. At this time, the two driven gears 309 come to a stop. When the threaded rod 306 moves closer to... When the lever 3010 on the right side contacts the groove 3011, under the continuous rotation of the power rod 303, the lever 3010 deflects to the upper right corner, driving the driven gear 309 on the right side to rotate counterclockwise. At this time, the driven gear 309 on the left side rotates clockwise, and the lever 3010 on the left side deflects to the upper left corner until the ball bearing 308 leaves the lever 3010 on the right side. At this time, the two driven gears 309 stop rotating again until they re-contact the lever 3010 on the left side, completing one cycle. During this cycle, the two driven gears 309 first rotate inward, then stop or rotate outward again. At the same time, the pulverizing blades 10 on the outer side of the two main shafts 8 at the top can first rotate inward relative to each other to pulverize the centella asiatica. After stopping for a period of time, they rotate outward relative to each other again to pulverize the centella asiatica, completing the entire pulverizing process.

[0046] By utilizing the continuous rotation of the power rod 303, the rotation is transformed into two main shafts 8 rotating simultaneously inward and outward after a period of pause. The rotation directions of the left and right main shafts 8 are always opposite and can be reversed within a cycle. During the entire crushing process, if the roots and stems of the centella asiatica become entangled on the outer surface of the crushing blade 10, the crushing blade 10 can be reversed after it stops to throw off the entangled centella asiatica. Through continuous cyclical rotation, the jamming phenomenon caused by excessive entanglement of centella asiatica during the crushing of traditional devices can be effectively avoided. This not only reduces the frequency of maintenance by operators and lowers the possibility of entanglement, but also significantly improves the crushing efficiency of centella asiatica.

[0047] like Figure 4 and Figure 5 As shown, the material limiting assembly 11 includes a mounting block 111. The bottom end of the mounting block 111 is fixedly connected to the top end of the main shaft 8. A fixing sleeve 112 is fixedly installed at equal angles on the outer side of the mounting block 111. A movable plate 113 is movably sleeved inside the fixing sleeve 112. The movable plate 113 can slide relative to the inner cavity of the fixing sleeve 112. A movable rod 114 located inside the fixing sleeve 112 is fixedly connected to one end of the movable plate 113. One end of the movable rod 114 passes through the end of the fixing sleeve 112 away from the mounting block 111 and a mass block 115 is fixedly installed thereon. The mass block 115 is made of lead. The material limiting assembly 11 also includes a rubber ring 117. The outer side of the rubber ring 117 is connected to the outer side of the mass block 115. A crushing nail 118 is fixedly installed at equal angles on the outer side of the rubber ring 117. A limit spring 116 is fixedly installed at the bottom end of the inner cavity of the fixing sleeve 112. The other end of the limit spring 116 is fixedly connected to the bottom end of the movable plate 113.

[0048] Second embodiment:

[0049] When the main shaft 8 rotates following the driven gear 309 at the bottom, the limiting component 11 at the top rotates accordingly. When the amount of *Centella asiatica* inside the crushing tank 1 is reduced because it is not completely crushed, the rotation speed of the main shaft 8 can be increased by increasing the speed of the main motor 301. When the rotation speed of the main shaft 8 increases, the centrifugal force on the mass block 115 located on the inner side of the rubber ring 117 increases, and the limiting spring 116 located inside the fixed sleeve 112 is stretched, which drives the movable rod 114 and the mass block 115 to move towards the outer side of the mounting block 111. At this time, the inner side of the rubber ring 117 is subjected to tension from multiple mass blocks 115, and the entire rubber ring 117 is stretched open, and the diameter of the rubber ring 117 increases. At this time, the distance between the two limiting components 11 decreases, the feeding space at the top of the crushing tank 1 decreases, and the feeding quantity of *Centella asiatica* decreases. Conversely, the feeding quantity of *Centella asiatica* can be increased.

[0050] By utilizing the continuous rotation of the power rod 303 to achieve the relative rotation of the two driven gears 309 and the reversing rotation within the cycle, and by utilizing the centrifugal force generated during high-speed rotation to change the relative position of multiple mass blocks 115, thereby changing the diameter of the rubber ring 117, and using the two limiting components 11 to change the gap, and the crushing nails 118 on the outer side of the rubber ring 117 can also rotate at high speed to pre-crush the incoming centella asiatica to reduce the subsequent crushing pressure, so that the feeding speed can be adjusted as needed to adapt to the crushing requirements. This avoids the problem of poor crushing effect caused by the inability of traditional devices to adjust the feeding speed according to the crushing effect. It realizes the function of autonomously adjusting the feeding speed according to the actual crushing effect to meet the crushing requirements, and is suitable for use when crushing centella asiatica in batches.

[0051] like Figure 3 and Figure 6 As shown, the cleaning component 5 includes an extension rod 501, which passes through the bottom end of the through groove 4 and is movably engaged with the movable groove at the top of the fixing block 307. A sealing ring 502 is fixedly installed at the top of the extension rod 501. A cleaning brush 503 is fixedly installed at the top of the sealing ring 502 above the extension rod 501. The cleaning brush 503 contacts the inner wall of the pulverizing tank 1. The sealing ring 502 is located above the through groove 4 and completely blocks the top of the through groove 4.

[0052] Third embodiment:

[0053] During the crushing process, the sealing ring 502 can always be positioned above the through groove 4 to block the through groove 4 and prevent the grass from falling through the through groove 4. At the same time, the extension rod 501 can be displaced relative to the movable groove at the top of the fixed block 307 when the relative position of the fixed block 307 is adjusted. During the crushing process, the continuous rotation of the power rod 303 can drive the extension rod 501 at its top to rotate through the fixed block 307. At this time, the extension rod 501 can move circumferentially relative to the crushing tank 1, while the sealing ring 502 can continue to rotate. Finally, the cleaning brush 503 can move circumferentially with it, so that it can move circumferentially relative to the inner wall of the crushing tank 1 and clean the inner side of the crushing tank 1 with the friction of the cleaning brush 503 to prevent adhesion.

[0054] By utilizing the continuously circumferentially moving power rod 303, the cleaning brush 503 can be driven to continuously circumferentially move, enabling the self-cleaning of the inner wall of the pulverizing tank 1 while continuously pulverizing. This eliminates the need for an additional power source and keeps the pulverization process synchronized, avoiding the problem of traditional devices where centella asiatica tends to adhere to the inner wall during pulverization, requiring machine shutdown for cleaning. It achieves simultaneous pulverization and cleaning, completing the autonomous cleaning process with a high degree of automation, reducing the frequency of device maintenance and manual operation, making it suitable for widespread use.

[0055] Working principle and usage process:

[0056] Before using the device, it can be placed on a flat surface and a suitable buffer device can be installed as needed. At the same time, it is necessary to ensure that the inside of the crushing tank 1 is dry. Then, the power supply of the device is turned on, and an appropriate amount of centella asiatica is fed into the inside of the crushing tank 1 through the top of the crushing tank 1 using an external feeding device for crushing operation.

[0057] When the power rod 303 rotates circumferentially under the action of the main motor 301, when one end of the power rod 303 approaches the left-side lever 3010, the ball 308 can contact the groove 3011 under the action of its arc motion as the power rod 303 continues to rotate. With the continuous rotation of the power rod 303, the left-side lever 3010 can be driven to deflect towards the bottom. At this time, the left-side driven gear 309 rotates counterclockwise, and the meshing driven gear 309 rotates clockwise. The lever 3010 at the bottom of the right-side driven gear 309 deflects to the lower right corner. The continuous rotation of the power rod 303 will cause the ball 308 to slide relative to the groove 3011, and the sliding direction is towards the end away from the middle of the driven gear 309, until the ball 308 leaves the left-side groove 3011. At this time, the two driven gears 309 come to a stop. When the threaded rod 306 moves closer to... When the lever 3010 on the right side contacts the groove 3011, under the continuous rotation of the power rod 303, the lever 3010 deflects to the upper right corner and drives the driven gear 309 on the right side to rotate counterclockwise. At this time, the driven gear 309 on the left side rotates clockwise, and the lever 3010 on the left side deflects to the upper left corner until the ball 308 leaves the lever 3010 on the right side. At this time, the two driven gears 309 stop rotating again until they re-contact the lever 3010 on the left side, completing one cycle. In this cycle, the two driven gears 309 first rotate inward, then stop or rotate outward again. At the same time, the pulverizing blades 10 on the outer side of the two main shafts 8 at the top can first rotate inward to pulverize the centella asiatica, and after stopping for a period of time, rotate outward again to pulverize the centella asiatica again, completing the entire pulverizing process.

[0058] During crushing, the main motor 301 starts and drives the power rod 303 to rotate circumferentially through the coupling 302, providing power for crushing. By rotating the threaded rod 306, the threaded groove inside one end of the power rod 303 can drive the threaded rod 306 to move left and right, that is, drive the bottom end of the threaded rod 306 to move towards the inner side of the power rod 303. At this time, under the thrust of the threaded rod 306, the slider 305 is pushed to slide relative to the groove 304, and drives the fixed block 307 and the ball 308 at its bottom end to slide. At this time, the initial position of the ball 308 inside the groove 3011 is changed. By adjusting the relative position of the slider 305 in conjunction with the high-speed rotation of the threaded rod 306, the contact time between the ball 308 and the groove 3011 can be changed. The longer the contact time, the shorter the time the two driven gears 309 stop rotating, and vice versa, thereby changing the crushing efficiency.

[0059] When the main shaft 8 rotates with the driven gear 309 at the bottom, the limiting component 11 at the top rotates accordingly. When the amount of *Centella asiatica* inside the crushing tank 1 is reduced because it is not completely crushed, the rotation speed of the main shaft 8 can be increased by increasing the speed of the main motor 301. When the rotation speed of the main shaft 8 increases, the centrifugal force on the mass block 115 located on the inner side of the rubber ring 117 increases. The limiting spring 116 located inside the fixed sleeve 112 is stretched and drives the movable rod 114 and the mass block 115 to move towards the outer side of the mounting block 111. At this time, the inner side of the rubber ring 117 is subjected to tension from multiple mass blocks 115, and the entire rubber ring 117 is stretched open. The diameter of the rubber ring 117 increases. At this time, the distance between the two limiting components 11 decreases, the feeding space at the top of the crushing tank 1 decreases, and the feeding quantity of *Centella asiatica* decreases. Conversely, the feeding quantity of *Centella asiatica* can be increased.

[0060] During the crushing process, the sealing ring 502 can always be positioned above the through groove 4 to block the through groove 4 and prevent the grass from falling through the through groove 4. At the same time, the extension rod 501 can be displaced relative to the movable groove at the top of the fixed block 307 when the relative position of the fixed block 307 is adjusted. During the crushing process, the continuous rotation of the power rod 303 can drive the extension rod 501 at its top to rotate through the fixed block 307. At this time, the extension rod 501 can move circumferentially relative to the crushing tank 1, while the sealing ring 502 can continue to rotate. Finally, the cleaning brush 503 can move circumferentially with it, so that it can move circumferentially relative to the inner wall of the crushing tank 1 and clean the inner side of the crushing tank 1 with the friction of the cleaning brush 503 to prevent adhesion.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] 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 crushing device for *Centella asiatica*, comprising a crushing tank (1), characterized in that: The bottom of the crushing tank (1) is provided with a power tank (2), and the inside of the power tank (2) is provided with a power assembly (3). The top of the crushing tank (1) is movably installed with a cover plate (6). The top of the power assembly (3) is provided with two main shafts (8). There are two main shafts (8) and they are both located inside the crushing tank (1). The outer side of the main shaft (8) is fixedly fitted with an installation sleeve (9) at equal distances. The outer side of the installation sleeve (9) is fixedly installed with a crushing blade (10) at equal angles. The top of the two main shafts (8) is fixedly installed with a material limiting assembly (11) located below the cover plate (6). The front and rear sides of the bottom of the inner cavity of the crushing tank (1) are fixedly installed with connecting rods (7). The top of the connecting rods (7) is connected to the bottom of the cover plate (6). The bottom of the crushing tank (1) is provided with a through groove (4) that is completely penetrating. The cleaning assembly (5) located inside the crushing tank (1) is provided above the through groove (4). The power assembly (3) includes a main motor (301), the bottom end of which is connected to the bottom end of the inner cavity of the power tank (2), the output shaft of the main motor (301) is connected to a coupling (302), and the top end of the coupling (302) is connected to a power rod (303), which can move circumferentially relative to the main motor (301); The power rod (303) has a groove (304) inside, and a slider (305) is movably installed inside the groove (304). A fixing block (307) is installed obliquely at the bottom end of the slider (305). A ball (308) is movably connected to the inner side of the fixing block (307) through a connecting seat. A movable groove is opened at the top end of the fixing block (307). A threaded rod (306) is threadedly connected to the end of the power rod (303) away from the main motor (301). The bottom end of the threaded rod (306) is in contact with the side of the slider (305). The power assembly (3) also includes driven gears (309), there are two driven gears (309), and they are movably connected to the bottom end of the crushing tank (1). The middle part of the top end of the driven gear (309) is connected to the bottom end of the two main shafts (8), and the two driven gears (309) mesh with each other. A lever (3010) is fixedly connected to the middle of the bottom of each of the two driven gears (309). The other end of the lever (3010) on the left is located at the lower left corner, and the other end of the lever (3010) on the right is located at the upper right corner. Grooves (3011) are provided on both sides of the two levers (3010). The diameter of the ball (308) is the same as the inner diameter of the groove (3011). The outer side of the ball (308) is in contact with the inner side of the groove (3011). The ball (308) can roll relative to the groove (3011). The material limiting component (11) includes a mounting block (111), the bottom end of which is fixedly connected to the top end of the main shaft (8), and a fixing sleeve (112) is fixedly mounted on the outer side of the mounting block (111) at equal angles. A movable plate (113) is movably sleeved inside the fixing sleeve (112), and the movable plate (113) can slide relative to the inner cavity of the fixing sleeve (112). One end of the movable plate (113) is fixedly connected to a movable rod (114) located inside the fixed sleeve (112). One end of the movable rod (114) passes through the fixed sleeve (112) away from the mounting block (111) and is fixedly mounted with a mass block (115). The mass block (115) is made of lead. The limiting component (11) also includes a rubber ring (117), the inner side of which is connected to the outer side of the mass block (115), and crushing nails (118) are fixedly installed at equal angles on the outer side of the rubber ring (117). A limiting spring (116) is fixedly installed at the bottom of the inner cavity of the fixed sleeve (112), and the other end of the limiting spring (116) is fixedly connected to the bottom of the movable plate (113).

2. The centella asiatica crushing device according to claim 1, characterized in that: The cleaning component (5) includes an extension rod (501) that passes through the bottom end of the through groove (4) and is movably engaged with the movable groove at the top of the fixing block (307). A sealing ring (502) is fixedly installed at the top of the extension rod (501). A cleaning brush (503) is fixedly installed at the top of the sealing ring (502) above the extension rod (501). The cleaning brush (503) contacts the inner wall of the pulverizing tank (1). The sealing ring (502) is located above the through groove (4) and blocks the top of the through groove (4).

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