A vibrating screen structure of a traditional Chinese medicine vibrating screening device

Abstract

The utility model belongs to medicinal material generation equipment technical field especially relates to a vibration screen structure of traditional chinese medicine vibrating screening device, include: screen plate, screen plate is arranged to the downward inclination and is driven vibration through vibration unit, still include: auxiliary vibration unit, auxiliary vibration unit has a plurality of and along the even staggered distribution of screen plate's lateral direction and longitudinal direction, and auxiliary vibration unit includes the vibration rod and tension support for forming multistage vibration, wherein, vibration rod is connected with screen plate through tension support and takes place vibration along with the vibration of screen plate. Relative to prior art, the utility model can effectively screen and peel the soil attached on medicinal material, improves the screening effect of medicinal material and soil.

Description

Technical Field

[0001] This utility model belongs to the technical field of medicinal material production equipment, and in particular relates to a vibrating screen structure of a traditional Chinese medicine vibration screening device. Background Technology

[0002] After harvesting, Chinese medicinal herbs usually need to be processed by a vibrating screening device to separate the soil and herbs. Currently, common Chinese medicinal herb vibrating screening devices generally use a sieve plate driven by a vibrating unit to screen the Chinese medicinal herbs. For example, the Chinese medicinal herb vibrating screening and impurity removal device disclosed in patent application number CN202220116074.1 includes a shell, a vibrating mechanism installed inside the shell, a sieve box fixedly connected to the upper surface of the shell, a limit groove opened on the inner wall of the sieve box, and three limit grooves. Fixing plates are fixedly installed on both sides of the sieve box by bolts, and there are two fixing plates. The existing Chinese medicine vibration screening device has poor screening effect on medicinal materials and soil during use. Some stubborn soil cannot be effectively removed by the vibration of the screen plate alone, so it is necessary to make improvements. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned technical problems by providing a vibrating screen structure for a traditional Chinese medicine vibration screening device, thereby effectively improving the screening effect of the device.

[0004] In view of this, the present invention provides a vibrating screen structure for a traditional Chinese medicine vibration screening device, comprising: A sieve plate, wherein the sieve plate is arranged at a downward inclination and is driven to vibrate by a vibration unit; Also includes: The auxiliary vibration unit has several units that are evenly and alternately distributed along the transverse and longitudinal directions of the screen plate. The auxiliary vibration unit includes a vibrating rod and a tension support for generating multi-level vibration. The vibrating rod is connected to the screen plate via a tension bracket and vibrates in accordance with the vibration of the screen plate.

[0005] In this technical solution, the harvested medicinal materials are fed into an important vibrating screening device and fall onto a sieve plate and an auxiliary vibration unit. Through a multi-stage vibration design of "single-stage vibration of the sieve plate + secondary vibration of the vibrating rod", the vibration energy is superimposed layer by layer, which can effectively break the adhesion of stubborn soil on the surface of the medicinal materials. At the same time, the vibrating rod can also guide the medicinal materials to rise and fall naturally during the vibration process. The impact generated during the fall further peels off the soil. Compared with the existing technology, this utility model can effectively screen and peel off the soil attached to the medicinal materials, improving the screening effect of medicinal materials and soil.

[0006] In the above technical solution, the vibrating rod further includes: The mounting part has through mounting holes for fixed connection with the tension bracket. The elastic part extends forward from the front end of the mounting part and is tapered in shape with a gradually decreasing diameter; The vibrating rod is made of polyurethane material with its own elasticity. The elastic part guides the screened medicinal materials to rise steadily and then fall naturally as the vibrating rod vibrates.

[0007] In the above technical solution, the tension support further includes: The fixing part is provided with a fixing screw; The tension section extends horizontally forward from the rear side of the fixing section, and the front end of the tension section has a through hole corresponding to the mounting hole of the mounting section. The tensioning part has its own tension, the screen plate has a screw hole that cooperates with the fixing screw, the fixing part is fixed to the screen plate by the fixing screw passing through the screw hole and cooperating with the nut, and the mounting part is fixed to the tensioning part by the bolt passing through the mounting hole and the through hole and cooperating with the nut.

[0008] Furthermore, the above technical solution also includes: Anti-loosening components are provided at the ends of bolts and on the contact surfaces of nuts to prevent bolts and nuts from loosening.

[0009] Furthermore, the above technical solution also includes: Anti-loosening toothed ring, wherein the anti-loosening toothed ring is disposed on the contact surface of the bolt head and the nut and is arranged concentrically, and the anti-loosening toothed ring protrudes from the contact surface of the bolt head and the nut to form a spring space at the edge of the contact surface of the bolt head and the nut; A butterfly spring, wherein the diameter and height of the butterfly spring are adapted to the spring space and the butterfly spring can be embedded in the spring space.

[0010] The beneficial effects of this utility model are: 1. Through a multi-stage vibration design of "single vibration of the sieve plate + secondary vibration of the tension section + tertiary vibration of the vibrating rod", the vibration energy is superimposed layer by layer, which can effectively break the adhesion of stubborn soil on the surface of Chinese medicinal materials; at the same time, the conical elastic part of the vibrating rod guides the medicinal materials to rise and then fall naturally. The impact generated during the fall further peels off the soil, improving the screening effect of medicinal materials and soil. 2. The auxiliary vibration units are evenly and alternately distributed along the transverse and longitudinal directions of the sieve plate to form a matrix barrier. During the conveying process, the medicinal materials are gradually dispersed by the vibrating rods to avoid local accumulation. At the same time, the oscillation of the elastic part of the vibrating rods can push the accumulated medicinal materials to both sides to ensure that all medicinal materials can fully contact the sieve plate and the auxiliary vibration units, effectively reducing the occurrence of sieve leakage. 3. The anti-loosening components effectively reduce the occurrence of loose bolts and nuts, improving the installation stability of the vibrator and tension bracket. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model.

[0013] Figure 2 This is a schematic diagram of the auxiliary vibration unit structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the anti-loosening component on the bolt of this utility model.

[0015] Figure 4 This is a schematic diagram of the anti-loosening component on the nut of this utility model.

[0016] Figure 5 This is a cross-sectional view of the anti-loosening component of this utility model.

[0017] The markings in the diagram are as follows: 1. Screen plate; 2. Auxiliary vibration unit; 3. Vibrating rod; 30. Mounting part; 31. Elastic part; 4. Tension bracket; 40. Fixing part; 41. Tensioning part; 5. Nut; 6. Bolt; 7. Anti-loosening component; 70. Anti-loosening toothed ring; 71. Spring space; 72. Butterfly spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0020] Sieve plate 1 The sieve plate 1 has a conventional structure and is made of stainless steel (such as 304 stainless steel). It is rectangular and has sieve holes evenly distributed on its surface. The sieve hole diameter can be adjusted according to the type of Chinese medicinal materials being screened (for example, the sieve hole diameter for root and rhizome medicinal materials is 5-10mm, and the sieve hole diameter for flower medicinal materials is 2-5mm). The sieve plate 1 is arranged with a downward inclination at an angle of 5-15° (to ensure that the medicinal materials are transported smoothly along the length of the sieve plate 1 under the action of gravity and vibration, while avoiding excessive inclination angle that would cause the medicinal materials to be transported too fast and the screening time to be insufficient).

[0021] Installation method: The sieve plate 1 is installed in the working chamber of the Chinese medicine vibration screening device through a conventional side-mounting structure. The side-mounting structure may include a slide rail fixed to the inner wall of the working chamber and a slider fixed to both sides of the sieve plate 1. The slider and the slide rail slide together, which facilitates the disassembly and maintenance of the sieve plate 1 and limits the lateral displacement of the sieve plate 1 during vibration. Wear-resistant grease (such as lithium-based grease) is applied to the contact surface between the slide rail and the slider to reduce sliding friction.

[0022] Vibration unit The vibration unit is a conventional vibration motor, such as a conventional three-phase asynchronous vibration motor (e.g., YZU-10-4 type vibration motor, rated power 0.75kW, rated speed 1450r / min). The vibration motor is fixed to the bottom center of the sieve plate 1 via a flange (to ensure that the vibration force is evenly transmitted to the entire sieve plate 1 and to avoid insufficient local vibration intensity of the sieve plate 1). The output end of the vibration motor is connected to an eccentric block. The vibration amplitude can be changed by adjusting the included angle of the eccentric block (the adjustment range is 0.5-3mm, which is suitable for Chinese medicinal materials of different textures. For example, small-amplitude vibration is used for brittle flower medicinal materials to avoid breakage of the medicinal materials).

[0023] Power supply and control: The vibrating motor is connected to the electrical control cabinet of the vibrating screening device via a cable. The control cabinet is equipped with a frequency converter. The speed of the vibrating motor can be changed by adjusting the output frequency of the frequency converter (5-50Hz), thereby adjusting the vibration frequency of the screen plate 1 to adapt to different screening requirements.

[0024] Auxiliary vibration unit 2 The auxiliary vibration units 2 are evenly and alternately distributed along the transverse and longitudinal directions of the sieve plate 1 to ensure that the medicinal materials can come into contact with the auxiliary vibration units 2 during the transportation process; each auxiliary vibration unit 2 includes a vibrating rod 3 and a tension support 4.

[0025] Vibrator 3 The vibrator 3 is made of polyurethane material with its own elasticity (Shore hardness of 60-70D, which combines elasticity and wear resistance to avoid scratching the surface of Chinese medicinal materials). The whole structure is a stepped structure with "thin front and thick back", including an integrally molded mounting part 30 and an elastic part 31.

[0026] Mounting part 30: The mounting part 30 is a cuboid structure with a length of 50-80mm, a width of 30-40mm, and a height of 20-30mm. The upper surface of the mounting part 30 has a through mounting hole (with a diameter of 8-10mm) for connecting with the tension bracket 4. A conventional buffer plate is arranged at the bottom of the mounting part 30. The plate has a through hole (with the same diameter as the mounting hole) that is coaxial with the mounting hole. The function of the plate is to reduce the rigid friction between the mounting part 30 and the tension bracket 4, and at the same time absorb some vibration energy to avoid structural fatigue caused by long-term vibration of the vibrator 3.

[0027] Elastic part 31: The elastic part 31 is formed by extending from the front end face of the mounting part 30 along the conveying direction (forward) of the sieve plate 1. It is cone-shaped in general, and its large end dimension is the same as that of the mounting part 30. The purpose of the cone-shaped structure is to guide the medicinal material to rise steadily. When the medicinal material is conveyed to the vibrating rod 3 along the sieve plate 1, it will rise along the cone surface of the elastic part 31 under the action of vibration. At the same time, the elastic part 31 will generate radial micro-oscillation under the action of vibration, further peeling off the stubborn soil on the surface of the medicinal material.

[0028] Tension support 4 The tension support 4 is made of Q235 carbon steel (galvanized surface treatment for rust prevention) and includes an integrally formed fixing part 40 and tension part 41. It has a certain structural rigidity and elastic deformation capability, and can generate its own tension vibration when the screen plate 1 vibrates.

[0029] Fixing part 40: The fixing part 40 is a cuboid structure with a length of 60-90mm, a width of 30-40mm, and a height of 15-20mm; the fixing screw can be directly welded to the fixing part 40, and the length of the fixing screw is 40-60mm; a buffer pad (made of nitrile rubber, with a thickness of 3-5mm) is arranged between the fixing part 40 and the screen plate 1, and a coaxial through hole is opened on the pad (the hole diameter is slightly larger than the diameter of the fixing screw to ensure that the screw can pass through smoothly); a buffer pad (with the same specifications as the pad below the fixing part 40) is also arranged on the back of the screen plate 1 corresponding to the fixing part 40. The pad is glued to the surface of the screen plate 1 with glue (such as epoxy resin glue) to reduce the vibration friction between the fixing part 40 and the screen plate 1, and at the same time avoid local dents in the screen plate 1 caused by long-term stress.

[0030] Tension section 41: Tension section 41 is formed by extending from the rear end face of the fixed section 40 in the opposite direction (rearward) of the conveying direction of the sieve plate 1. It is in the shape of a rectangular thin plate with a length of 120-150mm, a width of 20-30mm, and a thickness of 2-3mm. The front end of tension section 41 (the end near the mounting section 30) has a through hole (with a diameter of 8-10mm) that is coaxial with the mounting hole of the vibrator 3 for connection with the vibrator 3. Tension section 41 has its own tension. When the sieve plate 1 vibrates, tension section 41 will swing slightly up and down under the action of vibration force (the swing amplitude is 1-2mm), forming a secondary vibration excitation. This vibration excitation is superimposed with the primary vibration excitation of the sieve plate 1, which can significantly enhance the peeling effect on the surface impurities of the medicinal material.

[0031] Anti-loosening component 7 Anti-loosening components 7 are provided at the end of the bolt 6 (the bolt 6 connecting the vibrator 3 and the tension bracket 4) and on the contact surface of the nut 5 to prevent the bolt 6 and nut 5 from loosening under high-frequency vibration. They include an anti-loosening toothed ring 70 and a butterfly spring 72.

[0032] Anti-loosening tooth ring 70 The anti-loosening toothed ring 70 is made of 65Mn spring steel (with a blackened surface for rust prevention). It is circular in shape, with an outer diameter consistent with the outer diameter of the bolt head (15-20mm) and an inner diameter slightly larger than the nominal diameter of the bolt (to ensure that the bolt shank passes through smoothly). The anti-loosening toothed ring 70 has 12-16 evenly spaced serrated teeth on one side end face. The inclination angle of the teeth is "bidirectionally asymmetrical"—the inclination angle in the tightening rotation direction (the rotation direction when the bolt 6 is tightened) is 3-35° (preferably 15° to reduce tightening resistance), and the inclination angle in the loosening rotation direction (the rotation direction when the bolt 6 is loosened) is 45-75° (preferably 60° to increase loosening resistance).

[0033] Anti-loosening toothed rings 70 are respectively disposed between the contact surface of the bolt head and the mounting part 30 of the vibrator 3, and between the contact surface of the nut 5 and the tension part 41, with the fine teeth facing the side other than the bolt 6 / nut 5 (that is, the fine teeth of the anti-loosening toothed ring 70 on the bolt head side face the mounting part 30, and the fine teeth of the anti-loosening toothed ring 70 on the nut 5 side face the tension part 41). By the engagement of the fine teeth with the contact surface, the reverse rotation (loosening direction) of the bolt 6 is restricted.

[0034] Disc spring 72 The disc spring 72 adopts the type A disc spring 72 in GB / T1972-2005 standard. The material is 50CrVA spring steel. The outer diameter is the same as the outer diameter of the anti-loosening toothed ring 70 (15-20mm), the inner diameter is slightly larger than the nominal diameter of the bolt 6, and the height is 3-5mm. The elastic coefficient of the disc spring 72 is 50-100N / mm. After the bolt 6 is tightened, it can generate a continuous preload to compensate for the loss of preload of the bolt 6 caused by vibration.

[0035] The anti-loosening toothed ring 70 protrudes from the contact surface between the head of the bolt 6 and the nut 5. An annular spring space 71 is formed at the edge of the contact surface between the head of the bolt 6 and the mounting part 30, and at the edge of the contact surface between the nut 5 and the tension part 41. The disc spring 72 is embedded in the spring space 71, and the two ends of the disc spring 72 abut against the anti-loosening toothed ring 70 and the contact surface, respectively. When the bolt 6 is vibrated and tends to loosen, the disc spring 72 will be further compressed, generating a greater reaction force, pushing the anti-loosening toothed ring 70 to tightly engage with the contact surface, thereby enhancing the anti-loosening effect.

[0036] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A vibrating screen structure for a traditional Chinese medicine vibrating screening device, comprising: The sieve plate (1) is arranged at a downward inclination and is driven to vibrate by a vibration unit; Its characteristic is that it further includes: The auxiliary vibration unit (2) has several units that are evenly and alternately distributed along the transverse and longitudinal directions of the sieve plate (1). The auxiliary vibration unit (2) includes a vibrating rod (3) for forming multi-level vibration and a tension support (4). The vibrating rod (3) is connected to the sieve plate (1) via the tension bracket (4) and vibrates with the vibration of the sieve plate (1).

2. The vibrating screen structure of the traditional Chinese medicine vibration screening device according to claim 1, characterized in that, The vibrating rod (3) also includes: The mounting part (30) has a through mounting hole for fixed connection with the tension bracket (4); The elastic part (31) extends forward from the front end of the mounting part (30) and is cone-shaped with a gradually decreasing diameter; The vibrating rod (3) is made of polyurethane material with its own elasticity. The elastic part (31) guides the screened medicinal materials to rise steadily and then fall naturally as the vibrating rod (3) vibrates.

3. The vibrating screen structure of the traditional Chinese medicine vibration screening device according to claim 2, characterized in that, The tension support (4) also includes: A fixing part (40) is provided with a fixing screw; Tension section (41), which extends horizontally forward from the rear side of fixing section (40), and the front end of tension section (41) has a through hole corresponding to the mounting hole of mounting section (30); The tension part (41) has its own tension, the screen plate (1) has a screw hole that cooperates with the fixing screw, the fixing part (40) is fixed on the screen plate (1) by the fixing screw passing through the screw hole and cooperating with the nut (5), and the mounting part (30) is fixed on the tension part (41) by the bolt (6) passing through the mounting hole and the through hole and cooperating with the nut (5).

4. The vibrating screen structure of the traditional Chinese medicine vibration screening device according to claim 3, characterized in that, Also includes: Anti-loosening component (7) is provided at the end of the bolt (6) and on the contact surface of the nut (5) to prevent the bolt (6) and nut (5) from loosening.

5. The vibrating screen structure of the traditional Chinese medicine vibration screening device according to claim 4, characterized in that, The anti-loosening component (7) also includes: Anti-loosening toothed ring (70), the anti-loosening toothed ring (70) is disposed on the contact surface of the bolt (6) head and the nut (5) and is arranged concentrically, the anti-loosening toothed ring (70) protrudes from the contact surface of the bolt (6) head and the nut (5) to form a spring space (71) at the edge of the contact surface of the bolt (6) head and the nut (5); A butterfly spring (72) having a diameter and height adapted to a spring space (71) and capable of being embedded in the spring space (71).

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