Vibrating screening device

Abstract

The invention provides a vibration screening device, which belongs to the technical field of traditional Chinese medicinal material processing and comprises a base, a transition disc and a screening bed, the transition disc and the screening bed are both obliquely arranged downwards from left to right, the discharging end of the screening bed is located at the highest point of the left side, the transition disc is obliquely connected to the base in a sliding mode, the screening bed is hinged to a vibration shaft arranged at the left end of the transition disc, and a lifting mechanism used for driving the screening bed to ascend and descend in a reciprocating mode based on the vibration shaft is arranged between the transition disc and the screening bed. A traction mechanism used for driving the screening bed to slide obliquely in a reciprocating mode is arranged between the base and the transition disc. A plurality of rubber ropes are longitudinally arranged on the screening bed in an array mode, the rubber ropes are located above a screen in the screening bed and used for bearing medicinal materials, and a stirring assembly used for stirring the rubber ropes is arranged on the screening bed; the probability that the screening effect is affected due to the fact that screening holes are blocked and small-size medicinal materials are wound into the staggered and wound medicinal materials can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of traditional Chinese medicine processing, and specifically relates to a vibrating screening device. Background Art

[0002] Traditional Chinese medicines refer to medicinal plants, animals, and minerals used under the guidance of traditional Chinese medicine theory. After undergoing specific processing, these medicines can exert their unique pharmacological effects and are thus used to treat various diseases. There is a wide variety of traditional Chinese medicines, covering a broad range of fields, and they can be effectively applied in traditional Chinese medicine clinical practice to help patients relieve pain and regulate their bodies. Among them, rhizome-based traditional Chinese medicines refer to those mainly growing from the roots or rhizomes of plants and usually play an important role in traditional Chinese medicine and herbal medicine therapies. The efficacy and application effects of such medicines are often directly related to the roots or rhizomes where they grow.

[0003] Since the main medicinal parts of rhizome-based traditional Chinese medicines are their roots or rhizomes, during the processing, their different sizes and shapes will have a significant impact on the efficacy of the medicines. To improve the consistency and efficacy of traditional Chinese medicines during processing, it is usually necessary to use a linear vibrating screen to screen the medicines according to their volume sizes, so that the forms of the medicines are unified to facilitate subsequent targeted processing. However, for some rhizome-based traditional Chinese medicines in the form of long, thin rods, during the screening process of the linear vibrating screen, the long, thin rod-shaped rhizome-based traditional Chinese medicines are prone to becoming intertwined and blocking the screen holes on the screen surface, thereby affecting the normal progress of the screening work.

[0004] Referring to the Chinese patent document with the publication number CN222020052U, the publication date of November 19, 2024, and the name of a screening device for traditional Chinese medicine slices, by setting multiple sieves, electric telescopic rods, and a material feeding mechanism, when the traditional Chinese medicine slices fall on the sieve from the feeding trough for screening, the electric telescopic rod reciprocates up and down to make the sieve complete the screening and filtering of the traditional Chinese medicine slices. And during the screening process, with the cooperation of the material feeding mechanism, it is possible to stir the traditional Chinese medicine slices, so as to reduce the possibility of the traditional Chinese medicine slices blocking the screen holes to a certain extent, achieve more accurate screening, and thus improve the screening efficiency of the traditional Chinese medicine slices.

[0005] Referring to the above technical solution, when screening long, thin, and bar-shaped rhizomes, when such medicinal materials are intertwined on the screen to form a mesh structure, the material-push method can remove them and solve the problem of sieve hole blockage to a certain extent. However, in the actual screening process, due to the existence of the mesh structure, small-volume medicinal materials that could have passed through the sieve holes smoothly may be drawn into the intertwined medicinal materials. In this case, although the sieve holes are not completely blocked, small-volume medicinal materials may still remain on the top of the sieve, thereby affecting the final effect of the overall screening work. In addition, when these small-volume medicinal materials are discharged from the discharge port of the linear vibrating screen together with the intertwined large-volume medicinal materials, the small-volume medicinal materials are not effectively separated from the intertwined large-volume medicinal materials, which will not only result in incomplete screening, but may also affect the subsequent processing of the large-volume medicinal materials. Summary of the invention

[0006] In view of this, the present application provides a vibrating screening device, which is mainly used to solve the problem that long and thin rhizome medicinal materials are easily intertwined and entangled and block the sieve holes. At the same time, it can also solve the problem that small-volume medicinal materials are drawn into the inside of the intertwined medicinal materials and affect the final screening effect.

[0007] In order to solve the above technical problems, the present application provides a vibrating screening device, including a base and a transition plate and a sieve bed arranged above the base; the transition plate and the sieve bed are both arranged to tilt downward from left to right, and the unloading end of the sieve bed is located at the highest point on the left side, the transition plate is obliquely slidably connected to the base, the sieve bed is hinged on the vibration shaft arranged at the left end of the transition plate, a lifting mechanism for driving the sieve bed to reciprocate and lift based on the vibration shaft is arranged between the transition plate and the sieve bed, and a traction mechanism for driving the sieve bed to obliquely reciprocate and slide is arranged between the base and the transition plate; a plurality of rubber ropes are arranged in a longitudinal array on the sieve bed, the rubber ropes are located above the screen inside the sieve bed and are used to support medicinal materials, and a toggling component for toggling the rubber ropes is arranged on the sieve bed.

[0008] By adopting the above technical scheme, in the screening process of long and thin rhizome medicinal materials, the cooperation of the lifting mechanism and the traction mechanism can effectively improve the screening efficiency, simulate the throwing rhythm of the dustpan to throw the medicinal materials, prevent the intertwined medicinal materials from being stationary for a long time and forming blockages on the screen, thereby reducing the possibility of small-volume medicinal materials being disturbed and having difficulty passing through the sieve holes smoothly, ensuring the smoothness of the screening process; at the same time, combined with the vibration mode of low-point loading and high-point unloading, the residence time of the medicinal materials on the sieve bed can be extended, so that the medicinal materials can be more fully screened on the sieve bed; in addition, with the help of the cooperation of the rubber rope and the toggle assembly, the intertwined medicinal materials can be actively shaken out during the screening process, which helps to break the entanglement of the medicinal materials and separate the small-volume medicinal materials from the entangled and clumped medicinal materials, so that the screening of the medicinal materials is more thorough.

[0009] Optionally, the rubber rope and the toggle assembly are both arranged on a rectangular frame, and the left end of the rectangular frame is hinged to the left end of the sieve bed, the right end of the sieve bed is hinged with a first cylinder, and the execution end of the first cylinder is hinged to the right end of the rectangular frame. When the first cylinder is extended, the rectangular frame can be lifted upward based on the hinge point between itself and the sieve bed.

[0010] By adopting the above technical solution, when the first cylinder extends to cause the rectangular frame to lift upward, the rubber rope can isolate the intertwined and entangled medicinal materials above the sieve bed, while the small-volume medicinal materials will pass through the gaps in the rubber rope and fall on the sieve bed for more effective screening, further reducing the possibility of small-volume medicinal materials being interfered with by entangled and clumped medicinal materials.

[0011] Optionally, the toggle assembly includes two parallelogram slide grooves arranged on a rectangular frame, and a gear plate capable of toggling multiple rubber ropes is slidably connected between the two parallelogram slide grooves, a second cylinder is hinged on the rectangular frame, and the execution end of the second cylinder is hinged to the gear plate.

[0012] By adopting the above technical solution, when the second cylinder operates to drive the shifting plate to move along the parallelogram slide groove, the shifting plate can shift the rubber rope, causing the rubber rope to shake continuously, thereby shaking off the intertwined medicinal materials.

[0013] Optionally, two toggle assemblies are provided, and the two toggle assemblies are respectively provided at the left and right ends of the rectangular frame.

[0014] By adopting the above technical solution, when the two toggle components respectively arranged at the left and right ends of the rectangular frame work synchronously, compared with the method of applying pressure at one end to cause the rubber rope to shake, the possibility of the shaking amplitude of the unpressurized end of the rubber rope attenuating and affecting the shaking effect can be reduced.

[0015] Optionally, the lifting mechanism includes a first crank-connecting rod assembly arranged between the transition plate and the sieve bed, the first motor output shaft arranged on the transition plate is connected to the torque input end of the first crank-connecting rod assembly, and the linear output end of the first crank-connecting rod assembly is connected to the sieve bed in a hinged form.

[0016] Optionally, the traction mechanism includes a second crank-connecting rod assembly arranged between the base and the transition plate, and the second motor arranged on the base can input power to the torque input end of the second crank-connecting rod assembly through gear transmission, and the linear output end of the second crank-connecting rod assembly is connected to the transition plate in a hinged form.

[0017] Optionally, a receiving tray is provided on the base, and the receiving tray is tilted downward from right to left to receive small-volume medicinal materials after screening.

[0018] By adopting the above technical solution, the small-volume medicinal materials are received by the obliquely arranged material receiving tray, and after the reception is completed, the small-volume medicinal materials can be guided to the left, facilitating the subsequent collection work.

[0019] Optionally, a material guiding tray is arranged at the discharging end of the screening bed. The material guiding tray is trapezoid-shaped and the width of its internal open end gradually decreases from right to left, for centrally discharging the large-volume medicinal materials after screening.

[0020] By adopting the above technical solution, after the large-volume medicinal materials move to the discharging end of the screening bed, through the cooperation of the material guiding tray, the large-volume medicinal materials can be concentrated inward, so as to avoid the situation that the large-volume medicinal materials are too loose during the subsequent collection process and fall off, thereby reducing the difficulty of the collection work.

[0021] Optionally, a dust blowing mechanism is arranged on the transition tray for cleaning the floating dust doped in the medicinal materials.

[0022] Optionally, the dust blowing mechanism includes a support truss arranged on the transition tray, and a blowing air pipe capable of introducing external high-pressure air flow is arranged on the support truss.

[0023] By adopting the above technical solution, with the blowing air pipe facing the screening bed as the introduction medium of the external high-pressure air flow, the floating ash doped in the medicinal materials can be removed to a certain extent, thereby reducing the burden of the subsequent medicinal material cleaning work.

[0024] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects: 1. When carrying out the screening work of long and thin rod-shaped rhizome medicinal materials, the medicinal materials are bounced from the screening bed by means of throwing, reducing the probability that the small-volume medicinal materials are interfered due to the screening holes being blocked by the intertwined medicinal materials. At the same time, with the participation of the material shaking mechanism, the intertwined medicinal materials can be dispersed, so that the small-volume medicinal materials in the entangled and agglomerated medicinal materials can fall downward.

[0025] 2. Optimize the screening direction of the linear vibrating screen, so that the linear vibrating screen completes the screening work in the way of feeding at the low point and discharging at the high point. Compared with the screening method of feeding at the high point and discharging at the low point, the residence time of the medicinal materials on the screening bed can be increased, so as to avoid the small-volume medicinal materials being carried away by the large-volume medicinal materials and discharged together, thereby reducing the occurrence of incomplete screening to a certain extent.

[0026] 3. In addition, after the medicinal materials are lifted, the intertwined medicinal materials can be isolated above the screening bed, providing a good screening environment for the small-volume medicinal materials, enabling the small-volume medicinal materials to effectively pass through the screening bed and complete the screening work, and further reducing the possibility that the screening holes are blocked by the intertwined medicinal materials and affecting the normal falling of the small-volume medicinal materials.

[0027] 4. During the screening process, the participation of external high-pressure airflow can remove the floating dust mixed in the raised medicinal materials, thereby reducing the burden of subsequent medicinal material cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a vibrating screening device of the present application; Figure 2 This is a schematic diagram of the structure of the toggle assembly for this application; Figure 3 This is a schematic diagram of the structure of the parallelogram slide and the gear plate of this application; Figure 4 This is a schematic diagram of the structure of the sieve bed and the rubber rope in the initial state of the present application; Figure 5 This is a schematic diagram of the structure of the sieve bed and the rubber rope in the lifted state of the present application; Figure 6 A top view of the sieve bed of the present application; Figure 7 Right side view of the sieve bed for this application.

[0029] Explanation of the reference numerals: 1. base; 11. receiving tray; 2. transition tray; 21. screening bed; 211. material guide tray; 22. vibration shaft; 23. lifting mechanism; 231. first crank-connecting rod assembly; 232. first motor; 24. traction mechanism; 241. second crank-connecting rod assembly; 242. second motor; 3. rectangular frame; 31. rubber rope; 32. toggle assembly; 321. parallelogram slide; 322. gear plate; 323. second cylinder; 33. first cylinder; 4. dust blowing mechanism; 41. supporting truss; 42. air blowing pipe. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figures 1-7 , the technical solutions of the embodiments of the present application are clearly and completely described. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0031] Reference Figure 1 The present embodiment provides a vibrating screening device, comprising a base 1, a transition plate 2, a sieve bed 21, a material lifting mechanism and a material shaking mechanism. The transition plate 2 and the sieve bed 21 are both arranged to tilt downward from left to right, and the material discharge end of the sieve bed 21 is located at the highest point on the left side. The transition plate 2 is obliquely slidably connected to the base 1, and the sieve bed 21 is hinged on a vibration shaft 22 arranged at the left end of the transition plate 2, and a vibration motor is arranged inside the vibration shaft 22.

[0032] Among them, refer to Figure 1The lifting mechanism includes a lifting mechanism 23 and a traction mechanism 24. The lifting mechanism 23 includes a first crank connecting rod assembly 231 (refer to Figure 5 ) and a first motor 232, the first crank-connecting rod assembly 231 is arranged between the transition plate 2 and the sieve bed 21, the first motor 232 is arranged on the transition plate 2, and the output shaft of the first motor 232 is connected to the torque input end of the first crank-connecting rod assembly 231, and the linear output end of the first crank-connecting rod assembly 231 is connected to the sieve bed 21 in a hinged form. When the first motor 232 is running, the right end of the sieve bed 21 will reciprocate and rise and fall with the vibration shaft 22 as the center of the circle, so as to lift the medicinal materials on the sieve bed 21; the traction mechanism 24 includes a second The crank connecting rod assembly 241 and the second motor 242 are arranged between the base 1 and the transition plate 2. The second motor 242 is arranged on the base 1 and can input power to the torque input end of the second crank connecting rod assembly 241 through gear transmission. The linear output end of the second crank connecting rod assembly 241 is connected to the transition plate 2 in a hinged form. When the second motor 242 is running, the transition plate 2 and the sieve bed 21 will slide back and forth obliquely together, and at the same time, the medicinal materials can be thrown to the left in coordination with the lifting action of the medicinal materials. In addition, referring to Figure 6 and Figure 7 The number of the first crank-connecting rod assembly 231 and the number of the second crank-connecting rod assembly 241 can be two in the front-rear direction to provide more stable motion support for the sieve bed 21 and the transition plate 2.

[0033] Among them, refer to Figure 2 and Figure 3 The material shaking mechanism includes a rectangular frame 3, a rubber rope 31, a first cylinder 33 and a toggle assembly 32. The left end of the rectangular frame 3 is hinged to the left end of the sieve bed 21, and the rubber rope 31 is arranged in a longitudinal array inside the rectangular frame 3 in a transverse distribution manner (that is, the two ends of the rubber rope 31 extend to the left and right sides respectively), and the rubber rope 31 is located above the sieve inside the sieve bed 21; the first cylinder 33 is hinged to the right end of the sieve bed 21, and the execution end of the first cylinder 33 is hinged to the right end of the rectangular frame 3. When the first cylinder 33 is extended, the rectangular frame 3 can be lifted upward with the hinge point between itself and the sieve bed 21 as the center of the circle; the toggle assembly 32 includes two parallelogram slide grooves 321, a gear plate 322 and a second cylinder 323. The two parallelogram slide grooves 321 are both arranged on the rectangular frame 3, the gear plate 322 is slidably connected between the two parallelogram slide grooves 321, the second cylinder 323 is hinged to the rectangular frame 3, and the execution end of the second cylinder 323 is hinged to the gear plate 322.

[0034] When screening long, thin, rhizome medicinal materials, first pour the medicinal materials onto the right end of the sieve bed 21 so that the medicinal materials are spread flat on the rubber rope 31, and then the vibration motor built into the vibration shaft 22 is operated to generate mechanical vibration. During this process, the rubber rope 31 cooperates with the screen inside the sieve bed 21 to form a composite screen to complete the preliminary vibration screening of the medicinal materials. At the same time, the first motor 232 is running, and with the cooperation of the first crank-connecting rod assembly 231, the right end of the sieve bed 21 will reciprocate and rise and fall with the vibration shaft 22 as the center, so as to lift the medicinal materials on the sieve bed 21, and then the second motor 242 follows the first motor 232 to operate synchronously. With the cooperation of the second crank-connecting rod assembly 241, the transition plate 2 and the sieve bed 21 can slide obliquely back and forth on the base 1 together, and at the same time, the medicinal materials can be gradually thrown to the left in coordination with the lifting action of the medicinal materials. The lifting method is used to reduce the probability of the intertwined medicinal materials clogging the sieve holes, and after the medicinal materials are lifted, the intertwined medicinal materials will be moderately dispersed under the action of gravity, causing the small-volume medicinal materials rolled inside to fall downward. Then the second cylinder 323 performs an alternating telescopic action, so that the tooth plate 322 moves back and forth along the parallelogram slide groove 321 and applies a pushing pressure to the rubber rope 31. The rubber rope 31 will continue to shake under the influence of its own elastic potential energy, so as to shake off the intertwined medicinal materials, further promote the separation of small-volume medicinal materials from the intertwined medicinal materials, thereby improving the final screening quality. In addition, after the medicinal materials are lifted up, the first cylinder 33 stretches to make the rectangular frame 3 rise upward with the hinge point between itself and the sieve bed 21 as the center of the circle. At this time, the intertwined medicinal materials will be lifted up by the rubber rope 31, and the small-volume medicinal materials will pass through the gaps between the rubber ropes 31 and fall on the sieve inside the sieve bed 21, providing a better screening environment for the small-volume medicinal materials. At the same time, the separation of the rubber rope 31 and the sieve bed 21 can to some extent tear the intertwined medicinal materials off the sieve bed 21, further reducing the possibility of the sieve holes being blocked.

[0035] In addition, refer to Figure 1 and Figure 2 There are two toggle assemblies 32 , and the two toggle assemblies 32 are respectively arranged at the left and right ends of the rectangular frame 3 , wherein the toggle assembly 32 at the left end is located below the rubber rope 31 , and the toggle assembly 32 at the right end is located above the rubber rope 31 .

[0036] When the rubber rope 31 is shaken by applying pressure from one side, the unpressurized end of the rubber rope 31 may experience a phenomenon of attenuated shaking amplitude due to lack of power support, thereby causing differences in the dispersion effects of medicinal materials at different points on the rubber rope 31. Therefore, with the help of two toggle components 32 respectively arranged at the left and right ends of the rectangular frame 3, the rubber rope 31 can more effectively shake the medicinal materials, thereby promoting efficient shaking of the materials.

[0037] ReferenceFigure 1 and Figure 4 A receiving tray 11 is provided on the base 1, and the receiving tray 11 is tilted downward from right to left to receive small-volume medicinal materials after screening.

[0038] When small-volume medicinal materials fall downward through the screen inside the sieve bed 21 , the receiving tray 11 can receive the small-volume medicinal materials and guide them to the left.

[0039] Reference Figure 1 A material guide plate 211 is provided at the unloading end of the sieve bed 21. The material guide plate 211 is arranged in a trapezoidal shape and the width of its internal opening gradually decreases from right to left, so as to centrally unload the large-volume medicinal materials after screening.

[0040] By utilizing the constricted design of the material guide plate 211 , during the falling process of large-volume medicinal materials, the material guide plate 211 can gather the large-volume medicinal materials inward, which is beneficial for subsequent collection work.

[0041] Reference Figure 1 and Figure 6 The transition plate 2 is provided with a dust blowing mechanism 4 for cleaning the floating dust mixed in the medicinal materials. The dust blowing mechanism 4 includes a support truss 41 and a blow pipe 42. The support truss 41 is provided on the transition plate 2. The blow pipe 42 is provided on the support truss 41 and can be used for external high-pressure airflow to flow in.

[0042] When the external high-pressure air flows into the blowing pipe 42 and is sprayed toward the position of the sieve bed 21, the floating dust mixed in the raised medicinal materials can be cleaned up through the cooperation of the external dust collecting equipment, thereby reducing the burden of subsequent medicinal materials cleaning work.

[0043] The implementation principle of a vibration screening device in the embodiment of the present application is: When screening long, thin, rhizome medicinal materials, first pour the medicinal materials onto the right end of the sieve bed 21 so that the medicinal materials are spread flat on the rubber rope 31, and then the vibration motor built into the vibration shaft 22 is operated to generate mechanical vibration. During this process, the rubber rope 31 cooperates with the screen inside the sieve bed 21 to form a composite screen to complete the preliminary vibration screening of the medicinal materials.

[0044] At the same time, the first motor 232 is running, and with the cooperation of the first crank-connecting rod assembly 231, the right end of the sieve bed 21 will reciprocate and rise and fall with the vibration shaft 22 as the center, so as to lift the medicinal materials on the sieve bed 21, and then the second motor 242 follows the first motor 232 to operate synchronously. With the cooperation of the second crank-connecting rod assembly 241, the transition plate 2 and the sieve bed 21 can slide obliquely back and forth on the base 1 together, and at the same time, the medicinal materials can be gradually thrown to the left in coordination with the lifting action of the medicinal materials. The lifting method is used to reduce the probability of the intertwined medicinal materials clogging the sieve holes, and after the medicinal materials are lifted, the intertwined medicinal materials will be moderately dispersed under the action of gravity, causing the small-volume medicinal materials rolled inside to fall downward.

[0045] Then the second cylinder 323 performs an alternate telescopic action, causing the shifting plate 322 to move back and forth along the parallelogram slide groove 321 and exert a shifting pressure on the rubber rope 31. The rubber rope 31 will continue to vibrate under the influence of its own elastic potential energy, so as to shake off the intertwined medicinal materials, further promote the separation of small-volume medicinal materials from the intertwined medicinal materials, thereby improving the final screening quality.

[0046] In addition, after the medicinal materials are lifted, the first cylinder 33 extends to make the rectangular frame 3 lift upward with the hinge point between itself and the sieve bed 21 as the center of the circle. At this time, the intertwined medicinal materials will be lifted upward by the rubber ropes 31, while the small-volume medicinal materials will pass through the gaps between the rubber ropes 31 and fall on the sieve inside the sieve bed 21, providing a better screening environment for the small-volume medicinal materials. At the same time, the separation of the rubber ropes 31 and the sieve bed 21 can to some extent tear the intertwined medicinal materials off the sieve bed 21, further reducing the possibility of the sieve holes being blocked.

[0047] When the medicinal materials are lifted up, the external high-pressure airflow is introduced into the blowing pipe 42 and sprayed toward the position of the sieve bed 21. At the same time, the floating dust mixed in the lifted medicinal materials can be cleaned through the cooperation of the external dust collecting equipment, thereby reducing the burden of subsequent medicinal materials cleaning work.

[0048] Eventually, small-volume medicinal materials will pass through the screen inside the sieve bed 21 and fall downward into the receiving tray 11, while large-volume medicinal materials will pass through the centralized material guide of the guide tray 211 and enter the external receiving equipment prepared in advance.

[0049] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A vibrating screening device, comprising a base (1) and a transition plate (2) and a screening bed (21) arranged above the base, characterized in that: The transition plate (2) and the sieve bed (21) are both arranged to tilt downward from left to right, and the unloading end of the sieve bed (21) is located at the highest point on the left side. The transition plate (2) is connected to the base (1) in an oblique sliding manner. The sieve bed (21) is hinged to a vibration shaft (22) arranged at the left end of the transition plate (2). A lifting mechanism (23) is arranged between the transition plate (2) and the sieve bed (21) for driving the sieve bed (21) to reciprocate based on the vibration shaft (22). A traction mechanism (24) is arranged between the base (1) and the transition plate (2) for driving the sieve bed (21) to slide obliquely back and forth. A plurality of rubber ropes (31) are arranged in a longitudinal array on the sieve bed (21); the rubber ropes (31) are located above the sieve mesh inside the sieve bed (21) and are used to support medicinal materials; and a toggling assembly (32) for toggling the rubber ropes (31) is arranged on the sieve bed (21).

2. A vibrating screening device according to claim 1, characterized in that: The rubber rope (31) and the toggle assembly (32) are both arranged on the rectangular frame (3), and the left end of the rectangular frame (3) is hinged to the left end of the sieve bed (21), and the right end of the sieve bed (21) is hinged to a first cylinder (33), and the execution end of the first cylinder (33) is hinged to the right end of the rectangular frame (3). When the first cylinder (33) is extended, the rectangular frame (3) can be lifted upward based on the hinge point between itself and the sieve bed (21).

3. A vibrating screening device according to claim 1, characterized in that: The toggle assembly (32) comprises two parallelogram slide grooves (321) arranged on the rectangular frame (3), and a toothed plate (322) capable of toggling a plurality of rubber ropes (31) is slidably connected between the two parallelogram slide grooves (321), a second cylinder (323) is hingedly connected to the rectangular frame (3), and an actuating end of the second cylinder (323) is hingedly connected to the toothed plate (322).

4. A vibrating screening device according to claim 1, characterized in that: Two toggle assemblies (32) are provided, and the two toggle assemblies (32) are respectively provided at the left and right ends of the rectangular frame (3).

5. A vibrating screening device according to claim 1, characterized in that: The lifting mechanism (23) comprises a first crank-connecting rod assembly (231) arranged between the transition plate (2) and the sieve bed (21); an output shaft of a first motor (232) arranged on the transition plate (2) is connected to a torque input end of the first crank-connecting rod assembly (231); and a linear output end of the first crank-connecting rod assembly (231) is connected to the sieve bed (21) in an articulated manner.

6. The vibrating screening device according to claim 1, wherein: The traction mechanism (24) comprises a second crank-connecting rod assembly (241) arranged between the base (1) and the transition plate (2); a second motor (242) arranged on the base (1) is capable of inputting power to a torque input end of the second crank-connecting rod assembly (241) by means of gear transmission; and a linear output end of the second crank-connecting rod assembly (241) is connected to the transition plate (2) in an articulated manner.

7. A vibrating screening device according to claim 1, characterized in that: The base (1) is provided with a material receiving tray (11), and the material receiving tray (11) is arranged to tilt downward from right to left, and is used to receive small-volume medicinal materials after screening.

8. A vibrating screening device according to claim 1, characterized in that: A material guiding plate (211) is provided at the discharging end of the screening bed (21). The material guiding plate (211) is trapezoidally arranged and the width of its internal open end gradually decreases from right to left, and is used for centralized discharging of the screened large-volume medicinal materials.

9. A vibrating screening device according to claim 1, characterized in that: A dust blowing mechanism (4) is provided on the transition plate (2) and is used for cleaning the floating dust mixed in the medicinal materials.

10. A vibrating screening device according to claim 9, characterized in that: The dust blowing mechanism (4) includes a support truss (41) provided on the transition plate (2), and a blowing pipe (42) capable of introducing external high-pressure air flow is provided on the support truss (41).

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