CN118162048B - Extrusion granulation equipment and Chinese medicinal material granulation process - Google Patents

Abstract

The present invention relates to the technical field of granulation equipment, and discloses an extrusion granulation equipment and a Chinese medicinal material granulation process, including a granulator body, a screen installed on the granulator body, a feed plate and a knife holder, and also includes multiple groups of cleaning mechanisms arranged around the outside of the screen and multiple groups of buffer components arranged at the bottom of the feed plate. The present invention uses a drive component to control the intermittent alternating movement of the scrapers on the two cleaning components. When the scraper is stationary, it is used to clean the particles on the screen, and when the scraper is active, it is used to clean the particles accumulated on the surface of the stationary scraper. The two scrapers run alternately and cooperate with each other, avoiding the formation of large lumps of particles accumulated on the scraper, thereby ensuring the quality of granulation, without manual cleaning, more convenient and efficient, and using the drive component to cooperate with the buffer component to make the feed plate produce a vibration effect, avoiding the adhesion of particles dropped on the feed plate, making the feeding more uniform, and also reducing the probability of particles agglomerating on the feed plate, further improving the quality of the particles.

Description

Extrusion granulation equipment and Chinese medicinal material granulation process

Technical Field

The invention relates to the technical field of granulation equipment, in particular to extrusion granulation equipment and a Chinese medicinal material granulation process.

Background technique

The drug granulation process mainly includes drug crushing, extraction of active ingredients from drug powder, concentration of drug extracts, drying of concentrated drug liquids, and granulation of drug powders. These steps require strict process control and quality inspection to ensure the quality and efficacy of Chinese medicine granules. In the granulation of drug powder, a granulator is generally used. Different types of granulators are used according to different drugs. Among them, the rotary granulator has a simple and efficient structure, good production efficiency, and is widely used. The rotary granulator is a machine that sets an extrusion impeller in a cylindrical screen, pours the material into the screen, drives the impeller and the screen to rotate after the equipment is running, and the material overflows from the mesh on the screen to form particles.

When the current rotary granulator is in use, in order to control the size of the particles, an annular knife holder is set outside the rotating screen, and a plurality of scrapers that fit the screen are fixed on the knife holder. This can not only control the particle size, but also avoid the adhesion of sticky particles. However, there are still certain problems: First, when the material is very viscous, the material is easy to adhere to the edge of the scraper and gradually accumulate into large pieces. If large pieces are formed, whether they are manually cleaned or naturally fall off, they do not meet the particle size requirements; secondly, when the sticky particles fall from the screen to the discharge plate of the granulator, they are also easy to adhere to the discharge plate, resulting in material accumulation and uneven discharge.

Currently, no effective solution has been proposed for the problems in the related technologies.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides an extrusion granulation equipment and a Chinese medicinal material granulation process, which have the advantages of solving the problems that, when the existing rotary granulator processes sticky materials, particles are easily accumulated into large lumps on the scraper, thereby reducing the granulation quality, and that sticky particles are easily adhered to the discharge plate of the granulator, resulting in uneven discharge.

In order to solve the above technical problems, the present invention provides the following technical solutions: an extrusion granulation device, comprising a granulator body, a screen installed on the granulator body, a feed plate and a knife holder, and also comprising a plurality of cleaning mechanisms arranged around the outside of the screen and a plurality of buffer components arranged at the bottom of the feed plate, wherein the cleaning mechanism comprises a driving component and two cleaning components;

The cleaning assembly is mounted on the blade holder, and each of the two cleaning assemblies comprises a scraper, and the scraper is used to clean and scrape off particles on the screen and to clean particles accumulated on the other scraper;

The driving assembly is mounted on the tool holder, and the driving assembly includes a motor. The driving assembly is in driving connection with the cleaning assembly and the blanking plate, and the driving assembly is used to drive the two scrapers to move alternately and intermittently, and the driving assembly is also used to drive the blanking plate to move vertically;

The buffer assembly is installed between the unloading plate and the granulator body, and the buffer assembly is used to support the unloading plate and drive it to reset when the unloading plate moves;

When the driving assembly is in operation, the two scrapers are driven to move alternately and intermittently, forcing any scraper to scrape off particles outside the screen when it is stationary, and forcing any scraper to scrape off particles adhering to the surface of the other scraper when it is moving;

When the driving component is in operation, it also drives the blanking plate to intermittently move vertically, thereby driving the buffer component. When the buffer component is in operation, it drives the blanking plate to reset, forcing the blanking plate to vibrate back and forth;

Preferably, the tool holder includes a circular ring arranged around the screen, the circular ring is fixed to the granulator body through legs, multiple groups of substrates symmetrically arranged up and down are fixed on the circular ring, the substrates extend toward the screen, and the two groups of cleaning components are respectively installed on two substrates of the same group.

Preferably, each of the two groups of cleaning components includes a rotating wheel, a first rotating shaft is fixedly connected to the center of the rotating wheel, the first rotating shaft passes through the substrate and is rotatably connected to the substrate, a worm gear is fixed to the end of the first rotating shaft away from the rotating wheel, a vertical shaft is fixedly connected to the edge of the rotating wheel, a sleeve is rotatably connected to the outer side of the vertical shaft, the scraper is fixedly connected to the sleeve, and a torsion spring is connected between the end of the sleeve and the vertical shaft.

Preferably, each of the two groups of cleaning components also includes a worm and a second rotating shaft, the second rotating shaft passes through the base plate and is rotatably connected to the base plate, a driven gear and a first bevel gear are respectively fixed at both ends of the second rotating shaft, the worm is meshed with the worm wheel, the worm is installed on the base plate through a bearing seat, the end of the worm is fixedly connected to the second bevel gear, and the second bevel gear is meshed with the first bevel gear.

Preferably, the drive assembly also includes a driving shaft, two ends of the driving shaft are respectively rotatably connected to two symmetrically arranged base plates, two incomplete gears are fixedly connected to the driving shaft, and the two incomplete gears are respectively matched with the driven gears in the two sets of cleaning assemblies and have corresponding positions, the motor is fixed on one of the base plates, and the motor output shaft is fixedly connected to the end of the driving shaft, and the driving assembly also includes a third bevel gear fixed to the bottom end of the driving shaft and a frame fixed on the base plate, a crank shaft is provided in the frame, the crank shaft is rotatably connected to the frame, a fourth bevel gear is fixed at one end of the crank shaft, the fourth bevel gear is meshed with the third bevel gear, and a push rod is rotatably connected to the crank shaft, and a vertical rod is hinged at one end of the push rod, and the bottom end of the vertical rod vertically penetrates the frame and extends to the bottom of the frame, and a linear bearing is provided at the connection between the frame and the vertical rod, and the linear bearing is sleeved on the outside of the vertical rod and fixed to the frame.

Preferably, the unloading plate includes a teardrop-shaped plate sleeved on the bottom end of the screen, the teardrop-shaped plate is arranged at an angle, a rib is fixed on the outer edge of the teardrop-shaped plate, a unloading port is formed between the two ends of the rib at the edge of the teardrop-shaped plate, and a plurality of movable plates are fixed on the edge of the teardrop-shaped plate that match the driving components respectively, and one end of the movable plate extends to directly below the vertical rod.

Preferably, the buffer assembly comprises a telescopic rod, both ends of which are fixedly connected to the granulator body and the unloading plate respectively, a spring is sleeved on the outer side of the telescopic rod, and both ends of the spring are fixedly connected to the granulator body and the unloading plate respectively.

The invention also discloses a Chinese medicinal material granulation process, which uses the above-mentioned extrusion granulation equipment.

Compared with the prior art, the present invention provides an extrusion granulation device and a Chinese medicinal material granulation process, which have the following beneficial effects:

1. This extrusion granulation equipment and Chinese medicinal material granulation process, by arranging a cleaning mechanism on the outside of the screen, using a driving component to control the intermittent alternating movement of the scrapers on the two cleaning components, one of the scrapers is used to clean the particles on the screen when it is stationary, and the other scraper is used to clean the particles accumulated on the surface of the stationary scraper when it is active. The two scrapers run alternately and cooperate with each other, avoiding the formation of large lumps of particles accumulated on the scraper, thereby ensuring the quality of granulation, without manual cleaning, more convenient and efficient, using the driving component to drive the blanking plate to move vertically, and cooperating with the buffer component to drive the blanking plate to reset, which can make the blanking plate produce a vibration effect, avoiding the adhesion of particles dropped on the blanking plate, making the blanking more uniform, and reducing the probability of particles agglomerating on the blanking plate, further improving the quality of the particles.

2. This extrusion granulation equipment and Chinese medicinal material granulation process, by configuring the cleaning component as a rotatable wheel and a scraper movably installed on the edge of the wheel, the scraper can be made stationary or movable by the rotation of the wheel, thereby facilitating the switching of the scraper's function. By arranging a torsion spring at the connection between the scraper and the wheel, when the scraper is used to clean the screen, the elastic force of the torsion spring makes the edge of the scraper fit closely to the screen, thereby improving the cleaning effect. When the scraper is used to clean another scraper, the edge of the scraper fits closely to the surface of the other scraper, thereby also improving the cleaning effect. By arranging a worm wheel and a worm, a self-locking effect is achieved, thereby preventing the wheel from moving randomly when stationary.

3. This type of extrusion granulation equipment and Chinese medicinal material granulation process drives two incomplete gears to rotate through a motor, and then drives two cleaning components to operate at the same time, which is conducive to the two cleaning components to use different functions alternately and achieve mutual cooperation. By setting the overlap characteristics of the gear set on the incomplete gear, it also avoids the conflict between the two cleaning components when converting their functions, and has high stability and a high degree of automation.

4. This extrusion granulation equipment and Chinese medicinal material granulation process, by setting the feed plate as a movable teardrop-shaped plate and a movable plate, the vertical rod is made to reciprocate vertically when the motor is running, thereby pushing the entire feed plate to move vertically, and the buffer component at the bottom of the feed plate is used to achieve reset, thereby achieving a continuous vibration effect, which is conducive to the removal of particles adhered to the surface of the feed plate, avoiding the accumulation of materials into blocks, and also achieving uniform feeding.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the three-dimensional structure of an extrusion granulation device of the present invention;

FIG2 is a schematic diagram of the structure of the tool holder of the present invention;

FIG3 is a schematic structural diagram of a cleaning mechanism of the present invention;

FIG4 is an enlarged view of portion A of FIG3 of the present invention;

FIG5 is a first working schematic diagram of the cleaning assembly of the present invention;

FIG6 is a second working schematic diagram of the cleaning assembly of the present invention;

FIG7 is a third working schematic diagram of the cleaning assembly of the present invention;

FIG8 is a schematic diagram of the operation of the drive assembly of the present invention;

FIG9 is an enlarged view of part B of FIG8 of the present invention;

FIG. 10 is a schematic diagram of the structure of the blanking plate.

In the figure: 1. Granulator body; 2. Screen; 3. Feeding plate; 31. Drop-shaped plate; 32. Sidewall; 33. Movable plate; 4. Knife holder; 41. Ring; 42. Base plate; 5. Cleaning mechanism; 51. Driving assembly; 501. Motor; 502. Driving shaft; 503. Incomplete gear; 504. Third bevel gear; 505. Frame; 506. Crank shaft; 507. Fourth bevel gear; 508. Push rod; 509 , vertical rod; 510, linear bearing; 52, cleaning assembly; 521, scraper; 522, rotating wheel; 523, first rotating shaft; 524, worm gear; 525, vertical shaft; 526, sleeve; 527, torsion spring; 528, worm; 529, second rotating shaft; 530, driven gear; 531, first bevel gear; 532, bearing seat; 533, second bevel gear; 6, buffer assembly; 61, telescopic rod; 62, spring.

Detailed ways

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, this application proposes an extrusion granulation equipment and a Chinese medicinal material granulation process.

Please refer to FIG1 , an extrusion granulation device includes a granulator body 1, a screen 2 installed on the granulator body 1, a feed plate 3 and a knife holder 4, and also includes a plurality of cleaning mechanisms 5 arranged around the outside of the screen 2 and a plurality of buffer components 6 arranged at the bottom of the feed plate 3, wherein the cleaning mechanism 5 includes a driving component 51 and two cleaning components 52;

The cleaning assembly 52 is mounted on the blade holder 4. Each of the two groups of cleaning assemblies 52 includes a scraper 521. The scraper 521 is used to clean and scrape off particles on the screen 2 and to clean particles accumulated on the other scraper 521.

The driving assembly 51 is installed on the tool holder 4, and the driving assembly 51 includes a motor 501. The driving assembly 51 is connected to the cleaning assembly 52 and the blanking plate 3 in a transmission manner. The driving assembly 51 is used to drive the two scrapers 521 to move alternately and intermittently. The driving assembly 51 is also used to drive the blanking plate 3 to move vertically.

The buffer assembly 6 is installed between the unloading plate 3 and the granulator body 1, and the buffer assembly 6 is used to support the unloading plate 3 and drive it to reset when the unloading plate 3 moves;

When the driving assembly 51 is in operation, it drives the two scrapers 521 to move alternately and intermittently, forcing any one of the scrapers 521 to scrape off particles outside the screen 2 when stationary, and forcing any one of the scrapers 521 to scrape off particle blocks adhered to the surface of the other scraper 521 when moving;

When the driving assembly 51 is in operation, it also drives the blanking plate 3 to intermittently move vertically, thereby driving the buffer assembly 6. When the buffer assembly 6 is in operation, it drives the blanking plate 3 to reset, forcing the blanking plate 3 to vibrate back and forth to prevent sticking.

Among them, the structures of the granulator body 1 and the screen 2 are both existing technologies. The specific numbers of the buffer assembly 6 and the cleaning mechanism 5 are set according to actual needs. The cleaning mechanism 5 is distributed in a ring array on the outside of the screen 2. In the initial state, in the same cleaning mechanism 5, there is always a scraper 521 whose edge is attached to the outer wall of the screen 2 to scrape off the particles overflowing from the screen 2.

When in use, the material is placed in the screen 2, and the granulator body 1 and the driving component 51 are operated together. When the granulator body 1 is in operation, the material is forced to overflow from the surface of the screen 2 to form particles. When the driving component 51 is in operation, the two cleaning components 52 are driven to operate simultaneously, so that the two scrapers 521 are intermittently and alternately active. When one of the scrapers 521 is stationary, it fits the screen 2 to clean the particles on the screen 2. The particles on the screen 2 fall to the bottom unloading plate 3 under the action of its own weight or the scraper 521. When the other scraper 521 is active, it cleans the particles accumulated on the stationary scraper 521 to prevent the particles from agglomerating into large lumps. After being cleaned, the particles on the scraper 521 also fall onto the bottom unloading plate 3. At the same time, when the driving component 51 is in operation, it also drives the unloading plate 3 to intermittently move vertically. When the unloading plate 3 moves vertically, the buffer component 6 operates to push the unloading plate 3 to reset up and down, and then the unloading plate 3 continuously moves up and down to form a vibration effect, and the particles on the unloading plate 3 are shaken off, so as to achieve uniform unloading.

By arranging a cleaning mechanism 5 on the outside of the screen 2, the drive component 51 is used to control the intermittent alternating movement of the scrapers 521 on the two cleaning components 52, one of the scrapers 521 is used to clean the particles on the screen 2 when it is stationary, and the other scraper 521 is used to clean the particles accumulated on the surface of the stationary scraper 521 when it is active. The two scrapers 521 operate alternately and cooperate with each other, thereby avoiding the formation of large lumps of particles accumulated on the scraper 521, thereby ensuring the quality of granulation, and no manual cleaning is required, which is more convenient and efficient. The drive component 51 is used to drive the blanking plate 3 to move vertically, and the buffer component 6 is used to drive the blanking plate 3 to reset, so that the blanking plate 3 can produce a vibration effect, thereby avoiding the adhesion of particles dropped on the blanking plate 3, making the blanking more uniform, and reducing the probability of particles agglomerating on the blanking plate 3, further improving the quality of the particles.

Further, referring to Figures 2 to 4, the knife holder 4 includes a ring 41 arranged around the screen 2, and the ring 41 is fixed to the granulator body 1 through legs. A plurality of groups of base plates 42 symmetrically arranged up and down are fixed on the ring 41, and the base plates 42 extend toward the screen 2. Two groups of cleaning components 52 are respectively installed on two base plates 42 of the same group. Each group of cleaning components 52 in the two groups of cleaning components 52 includes a rotating wheel 522, and a first rotating shaft 523 is fixedly connected to the center of the rotating wheel 522. The first rotating shaft 523 passes through the base plate 42 and is rotatably connected to the base plate 42. A worm gear 524 is fixed to the end of the first rotating shaft 523 away from the rotating wheel 522, and a vertical shaft 525 is fixedly connected to the edge of the rotating wheel 522. The outer side of the vertical shaft 525 is rotatably connected with a sleeve 526, and the scraper 521 is fixedly connected to the sleeve 526. A torsion spring 527 is connected between the end of the sleeve 526 and the vertical shaft 525. Each cleaning assembly 52 in the two groups of the cleaning assemblies 52 further includes a worm 528 and a second rotating shaft 529. The second rotating shaft 529 penetrates the base plate 42 and is rotatably connected to the base plate 42. A driven gear 530 and a first bevel gear 531 are fixed at both ends of the second rotating shaft 529. The worm 528 is meshed with the worm wheel 524. The worm 528 is installed on the base plate 42 through a bearing seat 532. The end of the worm 528 is fixedly connected with a second bevel gear 533, and the second bevel gear 533 is meshed with the first bevel gear 531.

The two groups of cleaning components 52 are arranged in opposite directions, the rotating wheel 522 of the top cleaning component 52 is arranged concentrically with the rotating wheel 522 of the bottom cleaning component 52, the vertical shaft 525 on the top cleaning component 52 is vertically downward, and the vertical shaft 525 on the bottom cleaning component 52 is vertically upward. In the initial state, the scraper 521 that is not subjected to external force in the two scrapers 521 remains stationary under the action of the torsion spring 527, and the scraper 521 is tangent to the edge of the rotating wheel 522. The angle of the other scraper 521 contacting the screen 2 is deflected, and the torsion spring 527 is deformed. The elastic force of the torsion spring 527 makes the scraper 521 close to the screen 2.

When in use, the scraper 521 of one cleaning assembly 52 is kept in contact with the screen 2 to clean the particles on the screen 2 to prevent the particles from accumulating on the surface of the scraper 521 to form a block. The other cleaning assembly 52 is running. At this time, the driven gear 530 rotates to drive the second rotating shaft 529 to rotate. The second rotating shaft 529 rotates to drive the first bevel gear 531 to rotate. When the first bevel gear 531 rotates, it drives the second bevel gear 533 to rotate. When the second bevel gear 533 rotates, it drives the worm 528 to rotate. When the worm 528 rotates, it drives the worm wheel 524 to rotate. When the worm wheel 524 rotates, it drives the first rotating shaft 523 and the rotating wheel 522 to rotate. When the rotating wheel 522 rotates, it drives the vertical shaft 525 at the edge, the torsion spring 527 on the vertical shaft 525, the sleeve 526 and the scraper 5 21 movement, the scraper 521 keeps tangent to the edge of the rotating wheel 522 and rotates with the rotating wheel 522. During the movement of the scraper 521 with the rotating wheel 522, the edge of the scraper 521 contacts the surface of the scraper 521 attached to the screen 2 at a certain acute angle, and then slides along its surface to scrape off the particles on its surface to prevent the particles from continuing to accumulate and form large blocks. Moreover, as the position of the vertical axis 525 moves, the edge of the scraper 521 slides along the scraper 521 attached to the screen 2 and the angle between the scraper 521 and the vertical axis 525 changes, so that the torsion spring 527 is deformed. The elastic force of the torsion spring 527 makes the edge of the scraper 521 press the surface of the scraper 521 attached to the screen 2, and finally cleans the particle blocks adhered to the surface of the scraper 521 attached to the screen 2.

By providing two sets of cleaning components 52 arranged opposite to each other, and configuring the cleaning components 52 to be a rotating wheel 522 and a scraper 521 installed on the edge of the rotating wheel 522, using the stationary scraper 521 of one of the cleaning components 52 to fit the screen 2 is helpful to scrape off the particles on the screen 2, so as to control the particle size and avoid the accumulation of particles on the screen 2. When the other cleaning component 52 is operated, the scraper 521 moving with the rotating wheel 522 can clean the scraper 521 fitting on the screen 2, thereby avoiding the particles fitting on the screen 2. Large lumps of particles accumulated on the surface of the scraper 521 are mixed into ordinary particles, thereby improving the quality of the particles. By setting the torsion spring 527, on the one hand, the scraper 521 on the screen 2 can be closely attached to the screen 2, avoiding gaps and improving the scraping effect of the particles on the screen 2. On the other hand, the scraper 521 can be closely attached to the surface when scraping the surface of another scraper 521, also avoiding gaps and improving the cleaning effect of the particle blocks on the surface of the scraper 521. The worm gear 524 and the worm 528 can also form a self-locking effect to prevent the wheel 522 from moving at will.

Further, referring to FIGS. 3 to 7 , the driving assembly 51 further comprises a driving shaft 502, both ends of the driving shaft 502 are rotatably connected to two symmetrically arranged base plates 42, two incomplete gears 503 are fixedly connected to the driving shaft 502, the two incomplete gears 503 are respectively matched with the driven gears 530 in the two cleaning assemblies 52 and the positions thereof correspond, the motor 501 is fixed to one of the base plates 42, and the output shaft of the motor 501 is fixedly connected to the end of the driving shaft 502;

The two incomplete gears 503 are matched with the driven gears 530 of the two cleaning assemblies 52 respectively. The two incomplete gears 503 are provided with tooth block groups. The projection of the tooth block groups on the two incomplete gears 503 along the axis direction of the driving shaft 502 has two overlapping parts. The two overlapping parts are the same and are respectively distributed at the two ends of the tooth block group.

When in use, the motor 501 drives the driving shaft 502 to rotate after it is turned on. When the driving shaft 502 rotates, it also drives the two incomplete gears 503 to rotate. When the tooth block group on the edge of the incomplete gear 503 contacts the driven gear 530, the incomplete gear 503 meshes with the driven gear 530. At this time, the incomplete gear 503 drives the driven gear 530 to rotate when it rotates. When the driven gear 530 rotates, the corresponding rotating wheel 522 is driven to rotate through the transmission of the second rotating shaft 529, the first bevel gear 531, the second bevel gear 533, the worm 528, the worm wheel 524 and the first rotating shaft 523, thereby driving the scraper 521 on the rotating wheel 522 to move. At this time, the scraper 521 is used to clean the particle blocks on the other scraper 521. Finally, when the gear group on the incomplete gear 503 is separated from the driven gear 530, the rotating wheel 522 is driven to rotate. When the wheel 522 rotates one circle, the edge of the scraper 521 just fits the screen 2 and remains stationary. At this time, the scraper 521 is used to clean the screen 2, so that the scrapers 521 on the same cleaning component 52 play different roles alternately. Similarly, the scrapers 521 on the other cleaning component 52 also play different roles alternately. When the scraper 521 of one cleaning component 52 is used to clean the screen 2, the scraper 521 of the other cleaning component 52 is used to clean the scraper 521 fitted on the screen 2. Since the two ends of the gear sets on the two incomplete gears 503 overlap, the rotating wheels 522 of the two cleaning components 52 rotate at the same time during the short period of function alternation, which does not affect the cleaning of the screen 2 or the cleaning of the particle blocks, thereby avoiding the overlap of the positions of the vertical shafts 525 and the sleeves 526 on the two rotating wheels 522 and thus causing a conflict.

By setting up the driving component 51, the motor 501 drives the incomplete gear 503 to rotate when it is running, which is conducive to driving the rotating wheel 522 to rotate intermittently and stop, so that the scraper 521 on the cleaning component 52 alternately plays different roles. By setting up two groups of incomplete gears 503 and setting the position of the gear group on the incomplete gear 503, it is conducive to the two cleaning components 52 to alternately use different functions and achieve mutual cooperation. By setting the overlapping characteristics of the gear group on the incomplete gear 503, it is also avoided that the two cleaning components 52 conflict when switching functions, and the stability is high and the degree of automation is high.

Further, referring to Figures 8 to 10, the driving assembly 51 also includes a third bevel gear 504 fixed to the bottom end of the driving shaft 502 and a frame 505 fixed to the base plate 42, a crank shaft 506 is arranged in the frame 505, the crank shaft 506 is rotatably connected to the frame 505, a fourth bevel gear 507 is fixed to one end of the crank shaft 506, the fourth bevel gear 507 is meshed with the third bevel gear 504, a push rod 508 is rotatably connected to the crank shaft 506, a vertical rod 509 is hinged at one end of the push rod 508, the bottom end of the vertical rod 509 vertically penetrates the frame 505 and extends to the bottom of the frame 505, a linear bearing 510 is arranged at the connection between the frame 505 and the vertical rod 509, and the linear bearing 510 is arranged at the connection between the frame 505 and the vertical rod 509. 10 is sleeved on the outside of the vertical rod 509 and fixed to the frame 505, the unloading plate 3 includes a teardrop-shaped plate 31 sleeved on the bottom end of the screen 2, the teardrop-shaped plate 31 is tilted, the outer edge of the teardrop-shaped plate 31 is fixed with a rib 32, and a unloading port is formed between the two ends of the rib 32 at the edge of the teardrop-shaped plate 31, and a plurality of movable plates 33 respectively matched with the driving assembly 51 are fixed on the edge of the teardrop-shaped plate 31, and one end of the movable plate 33 extends to the bottom of the vertical rod 509, and the buffer assembly 6 includes a telescopic rod 61, and the two ends of the telescopic rod 61 are respectively fixedly connected to the granulator body 1 and the unloading plate 3, and the outer side of the telescopic rod 61 is sleeved with a spring 62, and the two ends of the spring 62 are respectively fixedly connected to the granulator body 1 and the unloading plate 3;

Among them, the frame 505 is arranged at the bottom of the bottom plate below, and the frame 505 includes a bottom wall and two side walls formed in one piece, and the two ends of the crank shaft 506 are rotatably connected to the side walls; the multiple movable plates 33 at the edge of the teardrop-shaped plate 31 are preferably set to be horizontal. Since the teardrop-shaped plate 31 is set obliquely, the heights of the multiple movable plates 33 at the edge of the teardrop-shaped plate 31 are different, so the lengths of the vertical rods 509 matched with each movable plate 33 are also different, but the heights of the bottom ends of the vertical rods 509 are the same; since the teardrop-shaped plate 31 is set horizontally, the specifications of the multiple buffer components 6 located at the bottom of the teardrop-shaped plate 31 are different, that is, the lengths of the spring 62 and the telescopic rod 61 are different;

When in use, the motor 501 drives the driving shaft 502 to rotate after it is turned on. When the driving shaft 502 rotates, it drives the third bevel gear 504 at the bottom to rotate. When the third bevel gear 504 rotates, it drives the fourth bevel gear 507 to rotate. When the fourth bevel gear 507 rotates, it drives the crank shaft 506 to rotate. When the crank shaft 506 rotates, it pushes the top of the push rod 508 to reciprocate, so that the bottom end of the push rod 508 reciprocates and pushes the vertical rod 509 to move downward. When the vertical rod 509 reciprocates and moves downward, it pushes the movable plate 33 at the bottom. At this time, multiple movable plates 33 are pushed at the same time, so that the entire blanking plate 3 moves downward. When the blanking plate 3 moves downward, the telescopic rod 61 and the spring 62 are compressed. The elastic force of the spring 62 pushes the blanking plate 3 to move up and reset. In this way, the vibration effect of the blanking plate 3 is achieved, and the materials adhered to the blanking plate 3 are quickly and evenly discharged to avoid accumulation into blocks.

By setting up a driving component 51 and setting the unloading plate 3 as a movable teardrop-shaped plate 31 and a movable plate 33, when the driving component 51 is in operation, the vertical rod 509 is caused to reciprocate vertically, thereby pushing the entire unloading plate 3 to move vertically, and utilizing the buffer component 6 at the bottom of the unloading plate 3 to achieve resetting, thereby achieving a continuous vibration effect, which is beneficial for causing particles adhered to the surface of the unloading plate 3 to fall off, avoiding material accumulation into blocks, and achieving uniform unloading.

Working principle: When in use, the material is placed in the screen 2, and the granulator body 1 and the driving component 51 are operated together. When the granulator body 1 is operated, the Chinese medicine material is forced to overflow from the surface of the screen 2 to form particles; at this time, the motor 501 is started, and the motor 501 drives the driving shaft 502 to rotate. When the driving shaft 502 rotates, it also drives the two incomplete gears 503 to rotate, thereby simultaneously controlling the two cleaning components 52 set opposite to each other;

When the tooth block group on the edge of the incomplete gear 503 contacts the driven gear 530, the incomplete gear 503 meshes with the driven gear 530. At this time, the incomplete gear 503 drives the driven gear 530 to rotate when it rotates. When the driven gear 530 rotates, it drives the second rotating shaft 529 to rotate. The rotation of the second rotating shaft 529 drives the first bevel gear 531 to rotate. When the first bevel gear 531 rotates, it drives the second bevel gear 533 to rotate. When the second bevel gear 533 rotates, it drives the worm 528 to rotate. When the worm 528 rotates, it drives the worm wheel 524 to rotate. When the worm wheel 524 rotates, it drives the first rotating shaft 523 and the rotating wheel 522 to rotate. When the rotating wheel 522 rotates, it drives the vertical shaft 525 on the edge, the torsion spring 527 on the vertical shaft 525, the sleeve 526 and the scraper 521 to move. The scraper 521 rotates with the rotating wheel 522 while keeping tangent to the edge of the rotating wheel 522. During the movement of the scraper 521 with the rotating wheel 522, the scraper 521 After the edge of the scraper 521 contacts the surface of the other scraper 521 at a certain acute angle, it slides along the surface, and as the position of the vertical shaft 525 moves, the angle between the edge of the scraper 521 and the vertical shaft 525 changes while sliding, so that the torsion spring 527 is deformed, and the elastic force of the torsion spring 527 causes the edge of the scraper 521 to press the surface of the scraper 521 that is also attached to the screen 2, so as to clean the surface of the scraper 521; when the gear set on the incomplete gear 503 is separated from the driven gear 530, the rotating wheel 522 just rotates one circle, and the incomplete gear 503 cannot drive the cleaning assembly 52 afterwards, so that the scraper 521 and the rotating wheel 522 are stationary, and at this time, the edge of the stationary scraper 521 is attached to the screen 2, so as to clean the particles on the screen 2; therefore, when the two incomplete gears 503 continue to rotate, the scrapers 521 of the two cleaning assemblies 52 are intermittently active and stationary, and are used for different functions and cooperate with each other at the same time;

In addition, when the driving shaft 502 drives the incomplete gear 503 to rotate, it can also drive the third bevel gear 504 at the bottom to rotate. When the third bevel gear 504 rotates, it drives the fourth bevel gear 507 to rotate. When the fourth bevel gear 507 rotates, it drives the crank shaft 506 to rotate. When the crank shaft 506 rotates, it pushes the top of the push rod 508 to reciprocate, so that the bottom end of the push rod 508 reciprocates and pushes the vertical rod 509 to move downward. When the vertical rod 509 reciprocates and moves downward, it pushes the movable plate 33 at the bottom. At this time, multiple movable plates 33 are pushed at the same time, so that the entire blanking plate 3 moves downward. When the blanking plate 3 moves downward, the telescopic rod 61 and the spring 62 are compressed. The elastic force of the spring 62 pushes the blanking plate 3 to move up and reset. In this way, the vibration effect of the blanking plate 3 is achieved, and the materials adhered to the blanking plate 3 are quickly and evenly discharged to avoid accumulation into blocks.

By arranging a cleaning mechanism 5 on the outside of the screen 2, the drive component 51 is used to control the intermittent alternating movement of the scrapers 521 on the two cleaning components 52, one of the scrapers 521 is used to clean the particles on the screen 2 when it is stationary, and the other scraper 521 is used to clean the particles accumulated on the surface of the stationary scraper 521 when it is active. The two scrapers 521 operate alternately and cooperate with each other, thereby avoiding the formation of large lumps of particles accumulated on the scraper 521, thereby ensuring the quality of granulation, and no manual cleaning is required, which is more convenient and efficient. The drive component 51 is used to drive the blanking plate 3 to move vertically, and the buffer component 6 is used to drive the blanking plate 3 to reset, so that the blanking plate 3 can produce a vibration effect, thereby avoiding the adhesion of particles dropped on the blanking plate 3, making the blanking more uniform, and reducing the probability of particles agglomerating on the blanking plate 3, further improving the quality of the particles.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. An extrusion granulation device, comprising a granulator body (1), a screen (2) mounted on the granulator body (1), a feed plate (3) and a knife holder (4), characterized in that it also comprises a plurality of cleaning mechanisms (5) arranged around the outside of the screen (2) and a plurality of buffer components (6) arranged at the bottom of the feed plate (3), wherein the cleaning mechanism (5) comprises a driving component (51) and two cleaning components (52); The cleaning assembly (52) is mounted on the blade holder (4), and each of the two groups of cleaning assemblies (52) comprises a scraper (521), wherein the scraper (521) is used to clean particles on the screen (2) and to clean particles accumulated on the other scraper (521); The driving assembly (51) is mounted on the blade holder (4), the driving assembly (51) comprises a motor (501), the driving assembly (51) is in driving connection with the cleaning assembly (52) and the blanking plate (3), the driving assembly (51) is used to drive the two scrapers (521) to move alternately and intermittently, and the driving assembly (51) is also used to drive the blanking plate (3) to move vertically; The buffer assembly (6) is installed between the unloading plate (3) and the granulator body (1), and the buffer assembly (6) is used to support the unloading plate (3) and drive the unloading plate (3) to reset when the unloading plate (3) moves; When the driving component (51) is in operation, it drives the two scrapers (521) to move intermittently and alternately, forcing any one of the scrapers (521) to scrape off particles outside the screen (2) when stationary, and forcing any one of the scrapers (521) to scrape off particles adhering to the surface of the other scraper (521) when moving; When the driving component (51) is in operation, it also drives the blanking plate (3) to intermittently move vertically, thereby driving the buffer component (6). When the buffer component (6) is in operation, it drives the blanking plate (3) to reset, forcing the blanking plate (3) to vibrate back and forth. 2. An extrusion granulation device according to claim 1, characterized in that: the tool holder (4) includes a ring (41) arranged around the screen (2), the ring (41) is fixed to the granulator body (1) through legs, and multiple groups of base plates (42) symmetrically arranged up and down are fixed on the ring (41), and the base plates (42) extend toward the screen (2), and the two groups of cleaning components (52) are respectively installed on the two base plates (42) of the same group. 3. An extrusion granulation device according to claim 2, characterized in that: each cleaning assembly (52) in the two groups of cleaning assemblies (52) includes a rotating wheel (522), the center of the rotating wheel (522) is fixedly connected to a first rotating shaft (523), the first rotating shaft (523) passes through the base plate (42) and is rotatably connected to the base plate (42), a worm gear (524) is fixed to the end of the first rotating shaft (523) away from the rotating wheel (522), a vertical shaft (525) is fixedly connected to the edge of the rotating wheel (522), a sleeve (526) is rotatably connected to the outer side of the vertical shaft (525), the scraper (521) is fixedly connected to the sleeve (526), and a torsion spring (527) is connected between the end of the sleeve (526) and the vertical shaft (525). 4. An extrusion granulation device according to claim 3, characterized in that: each group of cleaning components (52) in the two groups of cleaning components (52) further includes a worm (528) and a second rotating shaft (529), the second rotating shaft (529) passes through the base plate (42) and is rotatably connected to the base plate (42), and a driven gear (530) and a first bevel gear (531) are fixed at both ends of the second rotating shaft (529), the worm (528) is meshed with the worm wheel (524), the worm (528) is installed on the base plate (42) through a bearing seat (532), and the end of the worm (528) is fixedly connected with a second bevel gear (533), and the second bevel gear (533) is meshed with the first bevel gear (531). 5. An extrusion granulation device according to claim 4, characterized in that: the driving assembly (51) further comprises a driving shaft (502), the two ends of the driving shaft (502) are respectively rotatably connected to two symmetrically arranged base plates (42), the driving shaft (502) is fixedly connected to two incomplete gears (503), the two incomplete gears (503) are respectively matched with the driven gears (530) in the two groups of cleaning assemblies (52) and have corresponding positions, the motor (501) is fixed on one of the base plates (42), the output shaft of the motor (501) is fixedly connected to the end of the driving shaft (502), the driving assembly (51) further comprises a third bevel gear (504) fixed on the bottom end of the driving shaft (502) and a third bevel gear (504) fixed on the base plate (42) ) on a frame (505), a crank shaft (506) is arranged in the frame (505), the crank shaft (506) is rotatably connected to the frame (505), a fourth bevel gear (507) is fixed to one end of the crank shaft (506), the fourth bevel gear (507) is meshed with the third bevel gear (504), a push rod (508) is rotatably connected to the crank shaft (506), a vertical rod (509) is hinged to one end of the push rod (508), the bottom end of the vertical rod (509) vertically penetrates the frame (505) and extends to the bottom of the frame (505), a linear bearing (510) is arranged at the connection between the frame (505) and the vertical rod (509), the linear bearing (510) is sleeved on the outside of the vertical rod (509) and is fixed to the frame (505). 6. An extrusion granulation equipment according to claim 5, characterized in that: the discharge plate (3) includes a teardrop-shaped plate (31) sleeved on the bottom end of the screen (2), the teardrop-shaped plate (31) is inclined, a retaining edge (32) is fixed to the outer edge of the teardrop-shaped plate (31), and a discharge port is formed between the two ends of the retaining edge (32) at the edge of the teardrop-shaped plate (31), and a plurality of movable plates (33) respectively matched with the driving components (51) are fixed to the edge of the teardrop-shaped plate (31), and one end of the movable plate (33) extends to the bottom of the vertical rod (509). 7. An extrusion granulation equipment according to claim 1 or 6, characterized in that: the buffer component (6) comprises a telescopic rod (61), the two ends of the telescopic rod (61) are respectively fixedly connected to the granulator body (1) and the unloading plate (3), and a spring (62) is sleeved on the outer side of the telescopic rod (61), and the two ends of the spring (62) are respectively fixedly connected to the granulator body (1) and the unloading plate (3). 8. A Chinese medicinal material granulation process, characterized in that: an extrusion granulation equipment according to any one of claims 1 to 7 is used.