A solid screening device for traditional Chinese medicinal materials

Abstract

The application discloses a traditional Chinese medicinal material solid screening device and relates to the screening technical field.The traditional Chinese medicinal material solid screening device comprises a supporting assembly, a material rotating assembly, a material conveying assembly, a material screening assembly and a dredging assembly.The supporting assembly comprises a supporting frame.The material rotating assembly comprises a material rotating ring, and the circumferential surface of the material rotating ring is fixedly provided with a first material rotating bin and a second material rotating bin.The material conveying assembly comprises a material storage bin, and the bottom of the material storage bin is fixedly provided with a first feeding channel.The material screening assembly comprises a first material screening cylinder, a second material screening cylinder and a third material screening cylinder, the circumferential surface of the first material screening cylinder is provided with a first material screening hole, the circumferential surface of the second material screening cylinder is provided with a second material screening hole, and the circumferential surface of the third material screening cylinder is provided with a third material screening hole.The dredging assembly comprises an arc-shaped moving plate.The specific structural design of the structures of the supporting assembly, the material rotating assembly, the material conveying assembly, the material screening assembly and the dredging assembly can prevent the screen from being blocked during the screening of the traditional Chinese medicinal materials and improve the screening efficiency of the traditional Chinese medicinal materials.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of screening, in particular to a solid screening device for traditional Chinese medicinal materials. BACKGROUND

[0002] Traditional Chinese medicinal material screening refers to the process of classifying and screening fresh or dried traditional Chinese medicinal materials, which aims to remove impurities, fibers and other non-medicinal parts and retain effective medicinal ingredients. In the screening process, traditional Chinese medicinal materials can be graded, sorted and separated according to different requirements and standards, so as to improve the quality and purity of traditional Chinese medicinal materials.

[0003] The current screening device usually pours mixed traditional Chinese medicinal materials into a screen, and then separates traditional Chinese medicinal materials of different sizes by centrifugation, vibration or airflow. In the screening process, the screen is prone to blockage. After the screening is completed, the staff needs to empty the traditional Chinese medicinal materials before the next screening process, which is not efficient. Therefore, we provide a solid screening device for traditional Chinese medicinal materials to solve the above problems. SUMMARY

[0004] The purpose of the present application is to provide a solid screening device for traditional Chinese medicinal materials, which solves the problems of easy blockage of the screen and low screening efficiency in the screening of traditional Chinese medicinal materials by the specific structural design of the support assembly, the material rotating assembly, the material conveying assembly, the material screening assembly and the dredging assembly.

[0005] To solve the above technical problems, the present application is realized by the following technical solutions: the present application is a traditional Chinese medicine solid screening device, which comprises a supporting assembly, a material rotating assembly, a material conveying assembly, a material screening assembly and a dredging assembly, the supporting assembly comprises a supporting frame, the supporting frame is installed on an external rack, the material rotating assembly is installed on the inner side of the supporting frame, the material rotating assembly comprises a material rotating ring, the material rotating ring is rotationally arranged on the inner side of the supporting frame, the first material rotating bin and the second material rotating bin are fixedly arranged on the circumferential side of the material rotating ring, the first material rotating bin and the second material rotating bin are both in communication with the interior of the material rotating ring, the material conveying assembly is installed in the interior of the material rotating ring, the material conveying assembly comprises a material storage bin, the material storage bin is rotationally connected with the material rotating ring, the material storage bin is fixedly connected with the supporting frame through a connecting piece, the first material inlet channel is fixedly arranged on the bottom of the material storage bin, the material screening assembly is installed in the interior of the material rotating ring, the material screening assembly comprises a first material screening cylinder, a second material screening cylinder and a third material screening cylinder, the first material screening cylinder is provided with a first material screening hole on the circumferential side, the second material screening cylinder is provided with a second material screening hole on the circumferential side, the third material screening cylinder is provided with a third material screening hole on the circumferential side, the first material screening hole has a hole diameter between the hole diameters of the second material screening hole and the third material screening hole, the first material screening cylinder, the second material screening cylinder and the third material screening cylinder are all provided with the dredging assembly, the dredging assembly comprises an arc-shaped moving plate, and the arc-shaped moving plate is fixedly provided with a dredging rod on the top.

[0006] Further, the supporting frame is fixedly provided with a positioning plate on one side, the positioning plate is installed with a first motor on one side, the other side of the positioning plate is rotationally provided with a first gear, the output end of the first motor is fixedly connected with the first gear, the other side of the supporting frame is fixedly provided with a U-shaped plate, the inner side of the U-shaped plate is rotationally provided with a second gear, the side of the supporting frame close to the second gear is rotationally provided with a first belt pulley and a second belt pulley, the first belt pulley and the second belt pulley are connected through a transmission belt, the circumferential side of the first belt pulley is fixedly provided with a first gear ring, and the first gear ring is engaged with the second gear.

[0007] Further, the U-shaped plate is installed with a second motor on the top, the output end of the second motor is fixedly connected with the second gear, the side of the supporting frame close to the second motor is installed with a third motor, and the side of the supporting frame close to the first motor is provided with two discharge ports, and the inner side of the supporting frame is rotationally provided with a third gear.

[0008] The application is further provided with a second gear ring fixedly arranged on the inner side of the material rotating ring, the second gear ring is engaged with the third gear, two connecting plates are fixedly arranged on the circumferential side of the material rotating ring, two arc-shaped rods are fixedly arranged on one side of the connecting plate, an arc-shaped elastic member is sleeved on the circumferential side of the arc-shaped rod, one end of the arc-shaped elastic member is fixedly connected with the corresponding connecting plate, a push plate is fixedly arranged on the other end of the arc-shaped elastic member, the push plate is slidingly arranged on the inner wall of the material rotating ring, a plurality of hitting balls are fixedly arranged on one side of the push plate, and the first material rotating bin and the second material rotating bin are in close contact with the corresponding hitting balls.

[0009] The application is further provided with an electromagnet installed on the side of the connecting plate close to the push plate, a permanent magnet installed on the side of the push plate close to the arc-shaped elastic member, the electromagnet and the permanent magnet are magnetically attracted to each other, and a feeding port is formed on the circumferential side of the material rotating ring and is in communication with the inside of the material storage bin.

[0010] The application is further provided with a U-shaped blocking strip slidingly arranged in the first feeding channel, a movable rack fixedly arranged on the inner side of the U-shaped blocking strip, the movable rack engaged with the first gear, a first arc-shaped sealing plate fixedly arranged at the bottom of the first feeding channel, a first discharging channel fixedly arranged at the bottom of the first arc-shaped sealing plate, the first discharging channel in communication with the inside of the first material rotating bin, the material conveying assembly further comprising a second feeding channel and a third feeding channel, the second feeding channel and the third feeding channel fixedly arranged on the inner side of the support frame, the second feeding channel in communication with the inside of the second material rotating bin, the third feeding channel in communication with the inside of the second material rotating bin, a second arc-shaped sealing plate fixedly arranged at one end of the second feeding channel, a third arc-shaped sealing plate fixedly arranged at one end of the third feeding channel, a second discharging channel fixedly arranged at the bottom of the second arc-shaped sealing plate, and a third discharging channel fixedly arranged at the bottom of the third arc-shaped sealing plate.

[0011] The application is further provided with a fourth discharging channel and a fifth discharging channel fixedly arranged on the inner side of the support frame, the second discharging channel, the third discharging channel, the fourth discharging channel and the fifth discharging channel are connected through the limiting rod, a first discharging bin is fixedly arranged at the bottom of the second discharging channel, a second discharging bin is fixedly arranged at the bottom of the third discharging channel, a third discharging bin is fixedly arranged at the bottom of the fourth discharging channel, a fourth discharging bin is fixedly arranged at the bottom of the fifth discharging channel, and the first discharging bin, the second discharging bin, the third discharging bin and the fourth discharging bin are in communication with the corresponding discharging ports.

[0012] The application is further provided with the first guide cylinder, the second guide cylinder and the third guide cylinder, which are all rotationally connected with the support frame, the second guide cylinder is fixedly connected with the second belt pulley through the rotating shaft, the third guide cylinder is fixedly connected with the second gear through the rotating shaft, the first guide cylinder is sleeved on the side of the first screening cylinder, the second guide cylinder is sleeved on the side of the second screening cylinder, the third guide cylinder is sleeved on the side of the third screening cylinder, the first feeding channel and the first discharging channel are both connected with the inside of the first guide cylinder, the second feeding channel and the second discharging channel are both connected with the inside of the second guide cylinder, the third feeding channel and the third discharging channel are both connected with the inside of the third guide cylinder, the fourth discharging channel is connected with the inside of the second guide cylinder, and the fifth discharging channel is connected with the inside of the third guide cylinder.

[0013] The application is further provided with the first guide cylinder, the second guide cylinder and the third guide cylinder, which are all rotationally connected with the support frame, the second guide cylinder is fixedly connected with the second belt pulley through the rotating shaft, the third guide cylinder is fixedly connected with the second gear through the rotating shaft, the first guide cylinder is sleeved on the side of the first screening cylinder, the second guide cylinder is sleeved on the side of the second screening cylinder, the third guide cylinder is sleeved on the side of the third screening cylinder, the first feeding channel and the first discharging channel are both connected with the inside of the first guide cylinder, the second feeding channel and the second discharging channel are both connected with the inside of the second guide cylinder, the third feeding channel and the third discharging channel are both connected with the inside of the third guide cylinder, the fourth discharging channel is connected with the inside of the second guide cylinder, and the fifth discharging channel is connected with the inside of the third guide cylinder.

[0014] The application is further provided with the first guide cylinder, the second guide cylinder and the third guide cylinder, which are all rotationally connected with the support frame, the second guide cylinder is fixedly connected with the second belt pulley through the rotating shaft, the third guide cylinder is fixedly connected with the second gear through the rotating shaft, the first guide cylinder is sleeved on the side of the first screening cylinder, the second guide cylinder is sleeved on the side of the second screening cylinder, the third guide cylinder is sleeved on the side of the third screening cylinder, the first feeding channel and the first discharging channel are both connected with the inside of the first guide cylinder, the second feeding channel and the second discharging channel are both connected with the inside of the second guide cylinder, the third feeding channel and the third discharging channel are both connected with the inside of the third guide cylinder, the fourth discharging channel is connected with the inside of the second guide cylinder, and the fifth discharging channel is connected with the inside of the third guide cylinder.

[0015] The present application has the following advantages: 1. The present application controls the rotation of the fourth motor to drive the stirring plate to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, the reciprocating screw rod rotates to drive the arc-shaped moving plate to move, and the dredging rod moves synchronously. When the stirring plate rotates by a certain angle, the dredging rod moves to the lowest position, and the small particles of traditional Chinese medicinal materials fall into the corresponding collection structure. The traditional Chinese medicinal materials that do not fall continue to move under the rotation of the stirring plate. The arc-shaped moving plate drives the dredging rod to move reversely along the reciprocating screw rod. Thus, the reciprocating movement of the arc-shaped moving plate can be realized by the reciprocating rotation of the stirring plate, that is, the dredging rod continuously dredges, so that the traditional Chinese medicinal materials will not be blocked during screening.

[0016] 2. The present application transports two groups of traditional Chinese medicinal materials screened at the first level to different screening structures, respectively, and then performs secondary screening on the two groups of traditional Chinese medicinal materials, respectively, to finally complete the multi-stage screening of the traditional Chinese medicinal materials. This process realizes the automatic screening, rotation and collection of the traditional Chinese medicinal materials, and greatly improves the screening efficiency of the traditional Chinese medicinal materials.

[0017] Of course, implementing any product of the present application does not necessarily require all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a structural schematic view of a traditional Chinese medicinal material solid screening device.

[0020] Figure 2 It is a structural sectional view of Figure 1 .

[0021] Figure 3 It is a partial structural schematic view of Figure 1 .

[0022] Figure 4 It is a structural front view of Figure 3 .

[0023] Figure 5 It is a structural schematic view of a supporting assembly in the present application.

[0024] Figure 6 It is another angle structural schematic view of Figure 5 .

[0025] Figure 7 It is another angle structural schematic view of Figure 6 .

[0026] Figure 8 Structure diagram of the material transferring assembly in the present application

[0027] Figure 9 Structure diagram of the material transferring assembly in the present application Figure 8

[0028] Figure 10 Structure diagram of the material transferring assembly in the present application

[0029] Figure 11 Structure diagram of the material transferring assembly in the present application Figure 10

[0030] Structure diagram of the material transferring assembly in the present application Figure 12

[0031] Structure diagram of the material transferring assembly in the present application Figure 13 Figure 12 Structure diagram of the material transferring assembly in the present application

[0032] Figure 14 Structure diagram of the material transferring assembly in the present application Figure 12 Structure diagram of the material transferring assembly in the present application

[0033] Figure 15 Structure diagram of the material transferring assembly in the present application Figure 14

[0034] Figure 16 Structure diagram of the material transferring assembly in the present application Figure 14

[0035] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0036] ​​​​1-support assembly, 101-support frame, 102-positioning plate, 103-first motor, 104-first gear, 105-U-shaped plate, 106-third gear, 107-first pulley, 108-second pulley, 109-transmission belt, 110-first tooth ring, 111-second motor, 112-third motor, 113-discharge port, 2-rotating material assembly, 201-rotating material ring, 202-first rotating material bin, 203-second rotating material bin, 204-second tooth ring, 205-connection plate, 206-feeding port, 207-arc-shaped elastic member, 208-pushing plate, 209-hitting ball, 210-electromagnet, 211-permanent magnet, 3-feeding assembly, 301-material storage bin, 302-first feeding channel, 303-U-shaped blocking strip, 304-moving rack, 305-first arc-shaped sealing plate, 306-first discharging channel, 307-second feeding channel, 308-third feeding channel, 309-second arc-shaped sealing plate, 310-third arc-shaped sealing plate, 311-second discharging channel, 312-third discharging channel, 313-fourth discharging channel, 314-fifth discharging channel, 315-first discharging bin, 316-second discharging bin, 317-third discharging bin, 318-fourth discharging bin, 4-screening assembly, 401-first screening cylinder, 402-second screening cylinder, 403-third screening cylinder, 404-first material guiding channel, 405-second material guiding channel, 406-third material guiding channel, 407-first material guiding cylinder, 408-second material guiding cylinder, 409-third material guiding cylinder, 5-unblocking assembly, 501-arc-shaped moving plate, 502-unblocking rod, 503-stirring plate, 504-first bevel gear, 505-U-shaped limiting plate, 506-second bevel gear, 507-reciprocating lead screw, 508-fourth motor, 509-limiting frame. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0038] Specific embodiment one, please refer to Figures 1-16The application discloses a traditional Chinese medicinal material solid screening device which comprises a supporting assembly 1, a material rotating assembly 2, a material conveying assembly 3, a material screening assembly 4 and a dredging assembly 5. The supporting assembly 1 comprises a supporting frame 101 which is installed on an external rack. The material rotating assembly 2 is installed on the inner side of the supporting frame 101. The material rotating assembly 2 comprises a material rotating ring 201 which is rotationally arranged on the inner side of the supporting frame 101. The material rotating ring 201 is fixedly provided with a first material rotating bin 202 and a second material rotating bin 203 on the circumferential surface thereof. The first material rotating bin 202 and the second material rotating bin 203 are both in communication with the interior of the material rotating ring 201. The material conveying assembly 3 is installed in the interior of the material rotating ring 201. The material conveying assembly 3 comprises a material storage bin 301 which is rotationally connected between the material rotating ring 201 and the supporting frame 101 and is fixedly connected between the supporting frame 101 and a connecting piece. The material storage bin 301 is fixedly provided with a first feeding channel 302 at the bottom thereof. The material screening assembly 4 is installed in the interior of the material rotating ring 201. The material screening assembly 4 comprises a first material screening cylinder 401, a second material screening cylinder 402 and a third material screening cylinder 403. The first material screening cylinder 401 is provided with a first material screening hole on the circumferential surface thereof. The second material screening cylinder 402 is provided with a second material screening hole on the circumferential surface thereof. The third material screening cylinder 403 is provided with a third material screening hole on the circumferential surface thereof. The diameter of the first material screening hole is between the diameters of the second material screening hole and the third material screening hole. The first material screening cylinder 401, the second material screening cylinder 402 and the third material screening cylinder 403 are all installed with the dredging assembly 5 (the dredging assembly 5 is located directly below the corresponding material screening cylinder) on the circumferential surface thereof. The dredging assembly 5 comprises an arc-shaped moving plate 501 which is fixedly provided with a dredging rod 502 at the top thereof.

[0039] Specifically, the supporting frame 101 is fixedly provided with a positioning plate 102 on one side. The positioning plate 102 is installed with a first motor 103 on one side. The positioning plate 102 is rotationally provided with a first gear 104 on the other side. The output end of the first motor 103 is fixedly connected with the first gear 104. The supporting frame 101 is fixedly provided with a U-shaped plate 105 on the other side. The U-shaped plate 105 is rotationally provided with a second gear inside. The supporting frame 101 is rotationally provided with a first belt pulley 107 and a second belt pulley 108 on the side close to the second gear. The first belt pulley 107 and the second belt pulley 108 are connected through a transmission belt 109. The first belt pulley 107 is fixedly provided with a first gear ring 110 on the circumferential surface thereof. The first gear ring 110 is engaged with the second gear.

[0040] Further, the U-shaped plate 105 is installed with a second motor 111 on the top thereof. The output end of the second motor 111 is fixedly connected with the second gear. The supporting frame 101 is installed with a third motor 112 on the side close to the second motor 111. The supporting frame 101 is provided with two discharge ports 113 on the side close to the first motor 103. The supporting frame 101 is rotationally provided with a third gear 106 inside.

[0041] The screening assembly 4 further comprises a first material guiding cylinder 407, a second material guiding cylinder 408 and a third material guiding cylinder 409, all of which are rotationally connected between the support frame 101 (the first material guiding cylinder 407, the second material guiding cylinder 408 and the third material guiding cylinder 409 are all provided with first material conveying openings and second material conveying openings on the circumferential sides, and all of them convey the traditional Chinese medicinal materials into the first material conveying openings before screening and convey the traditional Chinese medicinal materials out of the second material conveying openings after screening), the second material guiding cylinder 408 is fixedly connected with the second belt pulley 108 through a rotating shaft, and the third material guiding cylinder 409 is fixedly connected with the second gear through a rotating shaft (the second gear drives the third material guiding cylinder 409 to rotate, and the second belt pulley 108 drives the second material guiding cylinder 408 to rotate, and since the second gear and the second belt pulley 108 rotate in opposite directions, the third material guiding cylinder 409 and the second material guiding cylinder 408 rotate in opposite directions), the first material guiding cylinder 407 is sleeved on the circumferential side of the first screening cylinder 401, the second material guiding cylinder 408 is sleeved on the circumferential side of the second screening cylinder 402, and the third material guiding cylinder 409 is sleeved on the circumferential side of the third screening cylinder 403, the first material guiding cylinder 407 is in communication with the first material guiding passage 404, the second material guiding cylinder 408 is in communication with the second material guiding passage 405, and the third material guiding cylinder 409 is in communication with the third material guiding passage 406.

[0042] The first material guiding cylinder 407 is connected with the first screening cylinder 401 through the first material guiding passage 404, the second material guiding cylinder 408 is connected with the second screening cylinder 402 through the second material guiding passage 405, and the third material guiding cylinder 409 is connected with the third screening cylinder 403 through the third material guiding passage 406, the first material guiding cylinder 407 and the first screening cylinder 401 are in communication with the first material guiding passage 404 (i.e., the first material guiding cylinder 407 and the first material guiding passage 404 are in communication through the first material conveying opening), the second material guiding cylinder 408 and the second screening cylinder 402 are in communication with the second material guiding passage 405 (i.e., the second material guiding cylinder 408 and the second material guiding passage 405 are in communication through the first material conveying opening), and the third material guiding cylinder 409 and the third screening cylinder 403 are in communication with the third material guiding passage 406 (i.e., the third material guiding cylinder 409 and the third material guiding passage 406 are in communication through the first material conveying opening).

[0043] The operation process of the embodiment is as follows: in the initial state, the first sieve cylinder 401 corresponds to the first transfer bin 202 (that is, the second conveying port on the first guide cylinder 407 is downwardly aligned with the first transfer bin 202), at the same time, the third sieve cylinder 403 corresponds to the second transfer bin 203 (that is, the first conveying port on the third guide cylinder 409 is obliquely upwardly aligned with the second transfer bin 203), the first conveying port on the first guide cylinder 407 is upwardly aligned with the first feeding channel 302, the second conveying port on the third guide cylinder 409 is aligned with the third discharging channel 312, the storage bin 301 is filled with the granular Chinese herbal medicine to be sieved, then the first feeding channel 302 is opened so that the Chinese herbal medicine enters the first sieve cylinder 401 along the first feeding channel 302 and the first guide channel 404, when a certain amount of Chinese herbal medicine enters the first sieve cylinder 401, the first feeding channel 302 is closed, then the Chinese herbal medicine in the first sieve cylinder 401 is continuously sieved by using the dredging assembly 5, the small granular Chinese herbal medicine falls from the first sieve hole to the corresponding arc-shaped moving plate 501 and then falls into the first guide cylinder 407 along the arc-shaped moving plate 501, and then falls into the first transfer bin 202 through the first discharging channel 306, the large granular Chinese herbal medicine remains in the first sieve cylinder 401, in this process, the arc-shaped moving plate 501 moves to drive the dredging rod 502 to dredge the first sieve hole, then the first sieve cylinder 401 is driven to rotate by the third motor 112, in this process, the transfer ring 201 rotates to drive the first transfer bin 202 and the second transfer bin 203 to revolve, when the first transfer bin 202 corresponds to the second sieve cylinder 402 (that is, the first transfer bin 202 is aligned with the second guide channel 405), the third motor 112 is closed, at this time, the second transfer bin 203 corresponds to the first sieve cylinder 401 (that is, the second transfer bin 203 is aligned with the first discharging channel 306), the first conveying port on the first guide cylinder 407 is downwardly aligned with the second transfer bin 203, the second conveying port on the first guide cylinder 407 is upwardly aligned with the first feeding channel 302, then the small granular Chinese herbal medicine falls from the first transfer bin 202 into the second sieve cylinder 402 along the second guide channel 405, the large granular Chinese herbal medicine falls from the first sieve cylinder 401 into the second transfer bin 203 along the first guide channel 404, then the first sieve cylinder 401 is driven to reversely rotate by the third motor 112, in this process, the transfer ring 201 reversely rotates to drive the first transfer bin 202 and the second transfer bin 203 to reversely revolve, when the first transfer bin 202 returns to the initial position, the third motor 112 is closed, at this time, the second transfer bin 203 is aligned with the third guide channel 406 again, the first conveying port on the first guide cylinder 407 is upwardly aligned with the first feeding channel 302 again, the second conveying port on the first guide cylinder 407 is downwardly aligned with the first transfer bin 202 again, the first conveying port on the third guide cylinder 409 is aligned with the second transfer bin 203 again, then the large granular Chinese herbal medicine falls from the second transfer bin 203 into the third sieve cylinder 403 along the third guide channel 406,then the first feeding channel 302 is opened again, so that the traditional Chinese medicinal materials to be screened continue to enter the first screening cylinder 401 along the first feeding channel 302, and when a certain amount of traditional Chinese medicinal materials enter the first screening cylinder 401, the first feeding channel 302 is closed, at this time, the first screening cylinder 401 contains the second batch of traditional Chinese medicinal materials to be screened, the second screening cylinder 402 contains the small-particle traditional Chinese medicinal materials screened from the first batch, and the third screening cylinder 403 contains the large-particle traditional Chinese medicinal materials screened from the first batch, then the first screening cylinder 401, the second screening cylinder 402 and the third screening cylinder 403 are used to continuously screen the traditional Chinese medicinal materials in the corresponding positions by using the respective through components 5, the second screening cylinder 402 and the third screening cylinder 403 are used to continuously screen the smaller-particle traditional Chinese medicinal materials, the screened traditional Chinese medicinal materials enter the internal structure of the material conveying assembly 3 (i.e., the traditional Chinese medicinal materials screened by the second screening cylinder 402 enter the second guide cylinder 408, and the traditional Chinese medicinal materials screened by the third screening cylinder 403 enter the third guide cylinder 409), after the screening is completed, the second motor 111 is driven to rotate the second gear, the first gear ring 110 is rotated to drive the first pulley 107 to rotate, under the action of the transmission belt 109, the second pulley 108 is rotated, in this process, the second gear and the second pulley 108 are synchronously rotated in opposite directions, the second gear drives the third screening cylinder 403 to rotate, and the second pulley 108 drives the second screening cylinder 402 to rotate, when the first conveying port on the second guide cylinder 408 is aligned with the second discharging channel 311, and the first conveying port on the third guide cylinder 409 is aligned with the third discharging channel 312, at this time, the second motor 111 is closed, and the traditional Chinese medicinal materials in the second screening cylinder 402 and the third screening cylinder 403 fall into the internal structure of the corresponding material conveying assembly 3 (i.e., the traditional Chinese medicinal materials in the second screening cylinder 402 fall along the second guide channel 405 into the second discharging channel 311, and the traditional Chinese medicinal materials in the third screening cylinder 403 fall along the third guide channel 406 into the third discharging channel 312), then the second motor 111 is driven to reversely rotate the second gear, the first gear ring 110 is reversely rotated to drive the first pulley 107 to reversely rotate, under the action of the transmission belt 109, the second pulley 108 is rotated, the second gear and the second pulley 108 are also synchronously rotated in opposite directions, the second gear drives the third screening cylinder 403 to reversely rotate, and the second pulley 108 drives the second screening cylinder 402 to reversely rotate, until the second screening cylinder 402 and the third screening cylinder 403 return to the initial position, while the second screening cylinder 402 and the third screening cylinder 403 are reciprocatingly rotated, the third motor 112 is driven to rotate the first screening cylinder 401 to rotate, in this process, the material rotating ring 201 is rotated to drive the first material rotating bin 202 and the second material rotating bin 203 to revolve, until the second screening cylinder 402 and the third screening cylinder 403 return to the initial position, the first screening cylinder 401 is again aligned with the first material rotating bin 202, the third motor 112 is closed,At this time, the second material transfer bin 203 corresponds to the third screening cylinder 403, the first material conveying port on the third material guide cylinder 409 corresponds to the second material transfer bin 203, the first material conveying port on the first material guide cylinder 407 corresponds to the first feeding channel 302, and the second material conveying port on the first material guide cylinder 407 corresponds to the first material transfer bin 202. At this time, the second batch of small-particle Chinese herbal medicines enters the second screening cylinder 402, and the second batch of large-particle Chinese herbal medicines enters the third screening cylinder 403. Then, the first feeding channel 302 is opened again, so that the Chinese herbal medicines to be screened continue to enter the first screening cylinder 401 along the first feeding channel 302. When a certain amount of Chinese herbal medicines enter the first screening cylinder 401, the first feeding channel 302 is closed. At this time, the first screening cylinder 401 contains the third batch of Chinese herbal medicines to be screened, the second screening cylinder 402 contains the second batch of small-particle Chinese herbal medicines after screening, and the third screening cylinder 403 contains the second batch of large-particle Chinese herbal medicines after screening. Then, the above screening process is repeated, so that the uninterrupted multi-stage screening of Chinese herbal medicines can be automatically realized.

[0044] In the second embodiment, the second gear ring 204 is fixedly arranged in the inside of the material transfer ring 201, and is engaged with the third gear 106. Two connecting plates 205 are fixedly arranged on the side surface of the material transfer ring 201. Two arc-shaped rods are fixedly arranged on one side of the connecting plate 205. An arc-shaped elastic member 207 is sleeved on the side surface of the arc-shaped rod. One end of the arc-shaped elastic member 207 is fixedly connected with the corresponding connecting plate 205. The other end of the arc-shaped elastic member 207 is fixedly arranged with a push plate 208. The push plate 208 is slidingly arranged on the inner wall of the material transfer ring 201. A plurality of impact balls 209 are fixedly arranged on one side of the push plate 208. The first material transfer bin 202 and the second material transfer bin 203 are in close contact with the corresponding impact balls 209.

[0045] Specifically, the connecting plate 205 is installed with an electromagnet 210 on the side close to the push plate 208. The push plate 208 is installed with a permanent magnet 211 on the side close to the arc-shaped elastic member 207. The electromagnet 210 and the permanent magnet 211 are magnetically attracted to each other. The feeding port 206 is arranged on the side surface of the material transfer ring 201, and is in communication with the inside of the storage bin 301.

[0046] Further, the first feeding channel 302 is internally slidably provided with a U-shaped blocking strip 303, the inner side of the U-shaped blocking strip 303 is fixedly provided with a moving rack 304, the moving rack 304 is engaged with the first gear 104, the first motor 103 drives the first gear 104 to rotate, the moving rack 304 moves to drive the U-shaped blocking strip 303 to move, thereby the opening and closing of the first feeding channel 302 can be controlled, the first feeding channel 302 is fixedly provided with a first arc-shaped sealing plate 305 at the bottom, the first arc-shaped sealing plate 305 is fixedly provided with a first discharging channel 306 at the bottom, the first discharging channel 306 is communicated with the inside of the first material rotating bin 202, the material conveying assembly 3 further includes a second feeding channel 307 and a third feeding channel 308, the second feeding channel 307 and the third feeding channel 308 are fixedly arranged inside the supporting frame 101, the third feeding channel 308 is communicated with the inside of the second material rotating bin 203, the second feeding channel 307 is fixedly provided with a second arc-shaped sealing plate 309 at one end, the third feeding channel 308 is fixedly provided with a third arc-shaped sealing plate 310 at one end, the second arc-shaped sealing plate 309 is fixedly provided with a second discharging channel 311 at the bottom, the third arc-shaped sealing plate 310 is fixedly provided with a third discharging channel 312 at the bottom, the supporting frame 101 is fixedly provided with a fourth discharging channel 313 and a fifth discharging channel 314 inside, the second discharging channel 311, the third discharging channel 312, the fourth discharging channel 313 and the fifth discharging channel 314 are all connected with the supporting frame 101 through limiting rods, the second discharging channel 311 is fixedly provided with a first discharging bin 315 at the bottom, the third discharging channel 312 is fixedly provided with a second discharging bin 316 at the bottom, the fourth discharging channel 313 is fixedly provided with a third discharging bin 317 at the bottom, the fifth discharging channel 314 is fixedly provided with a fourth discharging bin 318 at the bottom, the first discharging bin 315, the second discharging bin 316, the third discharging bin 317 and the fourth discharging bin 318 are communicated with the corresponding discharging ports 113, the first discharging bin 315, the second discharging bin 316, the third discharging bin 317 and the fourth discharging bin 318 are all fixedly provided with inclined plates inside, when the traditional Chinese medicinal materials fall from the corresponding discharging ports 113, they can fall into the external collecting structure along the inclined plates to realize collection.

[0047] The operation process of the embodiment is as follows: the electromagnet 210 in the initial state is in the power-off demagnetization state, the first material rotating bin 202 and the second material rotating bin 203 are in contact with the corresponding hitting balls 209, the first material rotating bin 202 corresponds to the first material outlet channel 306, the second material rotating bin 203 corresponds to the third material inlet channel 308, the first material inlet channel 302 corresponds to the first material conveying port at the first screening cylinder 401, the second material inlet channel 307 corresponds to the first material conveying port at the second screening cylinder 402, the third material inlet channel 308 corresponds to the first material conveying port at the third screening cylinder 403, the first material outlet channel 306 corresponds to the second material conveying port at the first screening cylinder 401, the fourth material outlet channel 313 corresponds to the second material conveying port at the second material guiding cylinder 408, the fifth material outlet channel 314 corresponds to the second material conveying port at the third screening cylinder 403, the material rotating ring 201 rotates to drive the first material rotating bin 202 and the second material rotating bin 203 to revolve until the first material rotating bin 202 corresponds to the second screening cylinder 402, and the second material rotating bin 203 corresponds to the first screening cylinder 401, the traditional Chinese medicinal materials in the first material rotating bin 202 enter the second screening cylinder 402 along the second material inlet channel 307, in this process, the electromagnet 210 at the first material rotating bin 202 is controlled to complete one power-on and power-off, and the reciprocating vibration of the push plate 208 is realized by the elastic force of the arc-shaped elastic member 207, and then the first material rotating bin 202 is knocked by the hitting ball 209 to ensure that the small-particle traditional Chinese medicinal materials in the first material rotating bin 202 can all slide into the second screening cylinder 402, in this process, the remaining traditional Chinese medicinal materials in the first screening cylinder 401 enter the second material rotating bin 203 along the first material outlet channel 306, then the material rotating ring 201 is reversely rotated until the first material rotating bin 202 and the second material rotating bin 203 return to the initial position, at this time, the electromagnet 210 at the second material rotating bin 203 is controlled to complete one power-on and power-off, and the reciprocating vibration of the push plate 208 is realized by the elastic force of the arc-shaped elastic member 207, and then the second material rotating bin 203 is knocked by the hitting ball 209 to ensure that the small-particle traditional Chinese medicinal materials in the second material rotating bin 203 can all slide into the third screening cylinder 403, the traditional Chinese medicinal materials screened by the second screening cylinder 402 enter the third material rotating bin 317 along the fourth material outlet channel 313 and are guided out for collection, the traditional Chinese medicinal materials screened by the third screening cylinder 403 enter the fourth material rotating bin 318 along the fifth material outlet channel 314 and are guided out for collection, after the screening is completed, the first material conveying port at the second screening cylinder 402 corresponds to the second material outlet channel 311, so that the traditional Chinese medicinal materials in the second screening cylinder 402 drop along the second material outlet channel 311 and fall into the first material rotating bin 315 and are guided out for collection, and the first material conveying port at the third screening cylinder 403 corresponds to the third material outlet channel 312, so that the traditional Chinese medicinal materials in the third screening cylinder 403 drop along the third material outlet channel 312 and fall into the second material rotating bin 316 and are guided out for collection.

[0048] Specific embodiment three, on the basis of specific embodiment one and specific embodiment two, the first sieve cylinder 401, the second sieve cylinder 402 and the third sieve cylinder 403 are rotatably provided with a poking plate 503, one end of the poking plate 503 is fixedly provided with a first bevel gear 504, one side of the first sieve cylinder 401, the second sieve cylinder 402 and the third sieve cylinder 403 is fixedly provided with a U-shaped limiting plate 505, the first guide cylinder 407, the second guide cylinder 408 and the third guide cylinder 409 are fixedly connected with the corresponding U-shaped limiting plate 505, the U-shaped limiting plate 505 is rotatably provided with a second bevel gear 506, the second bevel gear 506 is engaged with the first bevel gear 504, the U-shaped limiting plate 505 is rotatably provided with a reciprocating lead screw 507, the reciprocating lead screw 507 is fixedly connected with the second bevel gear 506, the reciprocating lead screw 507 is in transmission cooperation with the arc-shaped moving plate 501, the other side of the first sieve cylinder 401, the second sieve cylinder 402 and the third sieve cylinder 403 is provided with a fourth motor 508, the output end of the fourth motor 508 is fixedly connected with the corresponding poking plate 503, one side of the first sieve cylinder 401, the second sieve cylinder 402 and the third sieve cylinder 403 close to the fourth motor 508 is fixedly provided with a limiting frame 509, the first guide cylinder 407, the second guide cylinder 408 and the third guide cylinder 409 are sleeved outside the corresponding limiting frame 509, one side of the limiting frame 509 is fixedly provided with a connecting rod, the first guide cylinder 407, the second guide cylinder 408 and the third guide cylinder 409 are fixedly connected with the corresponding connecting rod, the output end of the third motor 112 is fixedly connected with the connecting rod at the first guide cylinder 407, the connecting rod penetrates to the outside of the support frame 101, the connecting rod at the first guide cylinder 407 is fixedly provided with a third gear ring 510 on the side surface, the third gear ring 510 is engaged with the third gear 106, when the first sieve cylinder 401 is sieved, the third motor 112 is driven to rotate the connecting rod, the first guide cylinder 407 and the corresponding limiting frame 509 rotate to drive the first sieve cylinder 401 to rotate, the third gear ring 510 rotates to drive the third gear 106 to rotate, the second gear ring 204 rotates to drive the material rotating ring 201 to rotate, at this time, the first material rotating bin 202 and the second material rotating bin 203 synchronously perform circumferential motion.

[0049] The operation process of the embodiment is as follows: in the initial state, the first sieve hole, the second sieve hole and the third sieve hole are inserted with the corresponding dredging rod 502, the poking plate 503 is located at the left side of the corresponding arc-shaped moving plate 501, the first sieve cylinder 401, the second sieve cylinder 402 and the third sieve cylinder 403 are attached to the corresponding arc-shaped moving plate 501, and the top end of each dredging rod 502 is just inserted into the corresponding sieve hole (see the specific drawings for details) Figure 16As shown in FIG. 1, when the first feeding channel 302 is opened, the granular Chinese herbal medicine in the Chinese herbal medicine storage bin 301 enters the first feeding channel 302, and then enters the first screening cylinder 401 along the first guide channel 404. The fourth motor 508 at the first screening cylinder 401 is controlled to rotate the raking plate 503 clockwise. The Chinese herbal medicine inside the first screening cylinder 401 is raked by the raking plate 503. In this process, the first bevel gear 504 rotates to drive the second bevel gear 506 to rotate. The reciprocating screw rod 507 rotates to drive the arc-shaped moving plate 501 to move downward. The dredging rod 502 moves downward to open the first screening hole. When the raking plate 503 rotates to a certain angle, the dredging rod 502 moves to the lowest position, that is, the bottom of the arc-shaped moving plate 501 is attached to the U-shaped limiting plate 505. At this time, the Chinese herbal medicine inside the first screening cylinder 401 falls from the first screening hole. The small granular Chinese herbal medicine falls along the first screening hole to the arc-shaped moving plate 501, and then falls along the arc-shaped moving plate 501 to the first guide cylinder 407. Then, the small granular Chinese herbal medicine enters the first rotating bin 202 along the first discharging channel 306. The Chinese herbal medicine that does not fall continues to move under the rotation of the raking plate 503. When the raking plate 503 continues to rotate, the arc-shaped moving plate 501 drives the dredging rod 502 to move upward along the reciprocating screw rod 507. When the raking plate 503 rotates to the initial position, the dredging rod 502 is just inserted into the first screening hole to realize dredging. At this time, the small granular Chinese herbal medicine inside the first screening hole is pushed back into the first screening cylinder 401. Thus, the reciprocating rotation of the raking plate 503 can realize the reciprocating movement of the arc-shaped moving plate 501, that is, the dredging rod 502 continuously dredges the first screening hole. Since the dredging assembly 5 inside the second screening cylinder 402 and the third screening cylinder 403 is consistent with the second dredging assembly 5 inside the first screening cylinder 401, the operation mode is the same as the above process.

[0050] In the description of the present specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A solid sieving device for traditional Chinese medicinal materials, characterized in that, include: Support assembly (1), the support assembly (1) includes a support frame (101), the support frame (101) is mounted on an external frame; Material transfer assembly (2), which is installed inside the support frame (101), includes a material transfer ring (201), which is rotatably disposed inside the support frame (101), and a first material transfer bin (202) and a second material transfer bin (203) are fixedly disposed on the circumferential side of the material transfer ring (201), and the first material transfer bin (202) and the second material transfer bin (203) are both connected to the inside of the material transfer ring (201); The material conveying assembly (3) is installed inside the transfer ring (201). The material conveying assembly (3) includes a storage bin (301). The storage bin (301) is rotatably engaged with the transfer ring (201). The storage bin (301) is fixedly connected to the support frame (101) through a connector. A first feeding channel (302) is fixedly provided at the bottom of the storage bin (301). The screening assembly (4) is installed inside the rotating ring (201). The screening assembly (4) includes a first screening cylinder (401), a second screening cylinder (402), and a third screening cylinder (403). The first screening cylinder (401) has a first screening hole on its circumferential side, the second screening cylinder (402) has a second screening hole on its circumferential side, and the third screening cylinder (403) has a third screening hole on its circumferential side. The diameter of the first screening hole is between the diameter of the second screening hole and the diameter of the third screening hole. And a dredging component (5), wherein the first screen cylinder (401), the second screen cylinder (402) and the third screen cylinder (403) are all equipped with a dredging component (5), the dredging component (5) includes an arc-shaped moving plate (501), and a dredging rod (502) is fixedly provided on the top of the arc-shaped moving plate (501); A positioning plate (102) is fixedly installed on one side of the support frame (101), a first motor (103) is installed on one side of the positioning plate (102), and a first gear (104) is rotatably installed on the other side of the positioning plate (102); two discharge ports (113) are opened on the side of the support frame (101) near the first motor (103), and a third gear (106) is rotatably installed on the inner side of the support frame (101); A second toothed ring (204) is fixedly provided on the inner side of the material transfer ring (201). The second toothed ring (204) meshes with the third gear (106). Two connecting plates (205) are fixedly provided on the circumferential side of the material transfer ring (201). Two arc-shaped rods are fixedly provided on one side of the connecting plate (205). Arc-shaped elastic elements (207) are sleeved on the circumferential side of the arc-shaped rods. One end of the arc-shaped elastic element (207) is fixedly connected to the corresponding connecting plate (205), and the other end of the arc-shaped elastic element (207) is fixedly provided with a push plate (208). The push plate (208) is slidably disposed on the inner wall of the transfer ring (201). A plurality of striking balls (209) are fixedly disposed on one side of the push plate (208). The first transfer bin (202) and the second transfer bin (203) are both in contact with the corresponding striking balls (209). An electromagnet (210) is installed on the side of the connecting plate (205) near the push plate (208), and a permanent magnet (211) is installed on the side of the push plate (208) near the arc-shaped elastic element (207). The electromagnet (210) and the permanent magnet (211) are magnetically attracted to each other. A feed inlet (206) is opened on the circumferential side of the transfer ring (201), and the feed inlet (206) is connected to the inside of the storage bin (301).

2. The solid sieving device for traditional Chinese medicinal materials according to claim 1, characterized in that, The output end of the first motor (103) is fixedly connected to the first gear (104); a U-shaped plate (105) is fixedly provided on the other side of the support frame (101), and a second gear is rotatably provided on the inner side of the U-shaped plate (105). A first pulley (107) and a second pulley (108) are rotatably provided on the side of the support frame (101) near the second gear. The first pulley (107) and the second pulley (108) are connected by a transmission belt (109). A first toothed ring (110) is fixedly provided on the circumferential side of the first pulley (107), and the first toothed ring (110) meshes with the second gear.

3. The solid sieving device for traditional Chinese medicinal materials according to claim 2, characterized in that, The top of the U-shaped plate (105) is equipped with a second motor (111), the output end of the second motor (111) is fixedly connected to the second gear, and a third motor (112) is installed on the side of the support frame (101) near the second motor (111).

4. The solid sieving device for traditional Chinese medicinal materials according to claim 3, characterized in that, A U-shaped sealing strip (303) is slidably arranged inside the first feeding channel (302). A movable rack (304) is fixedly arranged inside the U-shaped sealing strip (303). The movable rack (304) meshes with the first gear (104). A first arc-shaped sealing plate (305) is fixedly arranged at the bottom of the first feeding channel (302). A first discharge channel (306) is fixedly arranged at the bottom of the first arc-shaped sealing plate (305). The first discharge channel (306) is connected to the inside of the first transfer bin (202). The material conveying assembly (3) further includes a second feeding channel (307) and a third feeding channel (308). The second feeding channel (307) and the third feeding channel (308) are fixedly disposed inside the support frame (101). The second feeding channel (307) is connected to the inside of the second transfer bin (203), and the third feeding channel (308) is connected to the inside of the second transfer bin (203). A second arc-shaped sealing plate (309) is fixedly provided at one end of the second feeding channel (307), a third arc-shaped sealing plate (310) is fixedly provided at one end of the third feeding channel (308), a second discharge channel (311) is fixedly provided at the bottom of the second arc-shaped sealing plate (309), and a third discharge channel (312) is fixedly provided at the bottom of the third arc-shaped sealing plate (310).

5. A solid sieving device for traditional Chinese medicinal materials according to claim 4, characterized in that, The support frame (101) is fixedly provided with a fourth discharge channel (313) and a fifth discharge channel (314). The second discharge channel (311), the third discharge channel (312), the fourth discharge channel (313) and the fifth discharge channel (314) are all connected to the support frame (101) through a limiting rod. The bottom of the second discharge channel (311) is fixedly provided with a first discharge chamber (315), the bottom of the third discharge channel (312) is fixedly provided with a second discharge chamber (316), the bottom of the fourth discharge channel (313) is fixedly provided with a third discharge chamber (317), and the bottom of the fifth discharge channel (314) is fixedly provided with a fourth discharge chamber (318). The first discharge chamber (315), the second discharge chamber (316), the third discharge chamber (317), and the fourth discharge chamber (318) are connected to the corresponding discharge port (113).

6. The solid sieving device for traditional Chinese medicinal materials according to claim 5, characterized in that, The screening assembly (4) further includes a first guide cylinder (407), a second guide cylinder (408), and a third guide cylinder (409). The first guide cylinder (407), the second guide cylinder (408), and the third guide cylinder (409) are all rotatably connected to the support frame (101). The second guide cylinder (408) is fixedly connected to the second pulley (108) via a rotating shaft. The third guide cylinder (409) is fixedly connected to the second gear via a rotating shaft. The first guide cylinder (407) is sleeved around the first screening cylinder (401), the second guide cylinder (408) is sleeved around the second screening cylinder (402), and the third guide cylinder (409) is sleeved around the third screening cylinder (403). The first feeding channel (302) and the first discharging channel (306) are both connected to the inside of the first guide cylinder (407). The second feeding channel (307) and the second discharging channel (311) are connected to the inside of the second guide cylinder (408). The third feeding channel (308) and the third discharging channel (312) are connected to the inside of the third guide cylinder (409). The fourth discharging channel (313) is connected to the inside of the second guide cylinder (408). The fifth discharging channel (314) is connected to the inside of the third guide cylinder (409).

7. A solid sieving device for traditional Chinese medicinal materials according to claim 6, characterized in that, The first guide cylinder (407) is connected to the first screen cylinder (401) through the first guide channel (404), the second guide cylinder (408) is connected to the second screen cylinder (402) through the second guide channel (405), and the third guide cylinder (409) is connected to the third screen cylinder (403) through the third guide channel (406). The first guide cylinder (407) and the first screen cylinder (401) are both connected to the inside of the first guide channel (404), the second guide cylinder (408) and the second screen cylinder (402) are both connected to the inside of the second guide channel (405), and the third guide cylinder (409) and the third screen cylinder (403) are both connected to the inside of the third guide channel (406).

8. A solid sieving device for traditional Chinese medicinal materials according to claim 7, characterized in that, The first screening cylinder (401), the second screening cylinder (402), and the third screening cylinder (403) are all rotatably equipped with a material guide plate (503). A first bevel gear (504) is fixedly installed at one end of each material guide plate (503). A U-shaped limiting plate (505) is fixedly installed on one side of each screening cylinder (401), the second screening cylinder (402), and the third screening cylinder (403). The first guide cylinder (407), the second guide cylinder (408), and the third guide cylinder (409) are all equipped with a material guide plate (501). 9) All are fixedly connected to the corresponding U-shaped limiting plate (505). The U-shaped limiting plate (505) is rotatably provided with a second bevel gear (506). The second bevel gear (506) meshes with the first bevel gear (504). The U-shaped limiting plate (505) is rotatably provided with a reciprocating screw (507). The reciprocating screw (507) is fixedly connected with the second bevel gear (506). The reciprocating screw (507) is in transmission cooperation with the arc-shaped moving plate (501). A fourth motor (508) is installed on the other side of the first screen cylinder (401), the second screen cylinder (402), and the third screen cylinder (403). The output end of the fourth motor (508) is fixedly connected to the corresponding feed plate (503). A limit frame (509) is fixedly installed on the side of the first screen cylinder (401), the second screen cylinder (402), and the third screen cylinder (403) near the fourth motor (508). The first guide cylinder (407) and the second guide cylinder (408) are also fixedly connected to the fourth motor (508). The third guide cylinder (409) and the third guide cylinder (409) are both sleeved on the outside of the corresponding limiting frame (509). A connecting rod is fixedly provided on one side of the limiting frame (509). The output end of the third motor (112) is fixedly connected to the connecting rod located at the first guide cylinder (407). The connecting rod extends through to the outside of the support frame (101). A third toothed ring (510) is fixedly provided on the circumferential side of the connecting rod located at the first guide cylinder (407). The third toothed ring (510) meshes with the third gear (106).

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