Essence raw material screening device

Abstract

The utility model discloses a material screening device for essence raw materials, which comprises a machine shell assembly, a material screening assembly and a material screening assembly, the screening assembly comprises a screen barrel, a positioning plate and a rotary driving mechanism, the screen barrel is arranged in the feeding tank and used for filtering and screening essence raw materials, the top of the screen barrel is connected to the positioning plate, the positioning plate is connected to the rotary driving mechanism, the rotary driving mechanism is used for driving the screen barrel to rotate through the positioning plate, and the rotary driving mechanism is connected to the support; the material stirring assembly comprises a material stirring piece, a push rod and a lifting driving mechanism, the material stirring piece is arranged in the screen barrel and connected to the push rod, the top of the push rod is connected to the lifting driving mechanism, and a brush is arranged on the edge of the side, away from the push rod, of the material stirring piece and abuts against the inner side of the screen barrel. The essence raw materials can be efficiently screened under the action of centrifugal force, the screening effect is good, the inner side of the screen barrel can be cleaned on line, and the screening and feeding efficiency is high.

Description

Technical Field

[0001] The utility model relates to the field of flavor raw material screening, in particular to a flavor raw material screening device. Background Art

[0002] Fragrance is a kind of artificially blended mixture containing two or more spices with a certain aroma. It is mainly used to add fragrance to products so that the products have a corresponding aroma. The preparation of flavors requires the blending and mixing of multiple raw materials.

[0003] In traditional technology, the preparation of flavors mainly involves weighing and preparing raw materials, and then mixing the weighed raw materials. During the mixing process, the melting efficiency of the raw materials often affects the preparation efficiency of the flavors, and even affects the quality of the flavors. In order to improve the quality and preparation efficiency of flavors, in related technologies, before the flavors are blended and mixed, a screen is used to screen the raw materials to obtain raw materials with composite size requirements. However, this screening method is achieved by using vibration or gravity, and there are problems such as low screening efficiency and easy clogging of the mesh. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a sieving device for essence raw materials, which can achieve efficient filtration and sieving of essence raw materials and has good mesh flowability.

[0005] A material screening device for essence raw materials according to an embodiment of the utility model comprises:

[0006] The casing assembly includes a bracket and a feed tank, wherein the feed tank is connected to the bracket and a feed pipe is provided at the bottom of the feed tank;

[0007] The screening material assembly comprises a screen barrel, a positioning plate and a rotary drive mechanism. The screen barrel is arranged in the feed tank. The screen barrel is used to filter and screen the essence raw materials. The top of the screen barrel is connected to the positioning plate. The positioning plate is connected to the rotary drive mechanism. The rotary drive mechanism is used to drive the screen barrel to rotate through the positioning plate. The rotary drive mechanism is connected to the bracket. The positioning plate is rotatably connected to the feed tank or the bracket. A first clearance hole is arranged at the center of the positioning plate.

[0008] The material shifting assembly comprises a material shifting piece, a push rod and a lifting drive mechanism. The material shifting piece is arranged in the screen barrel. The push rod is perpendicular to the horizontal plane. The push rod is passed through the barrel mouth and the first give way hole of the screen barrel. The material shifting piece is connected to the push rod. The top of the push rod is connected to the lifting drive mechanism. The lifting drive mechanism is used to drive the material shifting piece to rise and fall through the push rod. The lifting drive mechanism is connected to the bracket. A plurality of brushes distributed at equal intervals are provided at the edge of the material shifting piece away from the push rod. The brushes abut against the inner side of the screen barrel. The rotating axis of the screen barrel is colinear with the push rod.

[0009] In this embodiment, a recovery pipe is provided at the bottom of the screen barrel. The recovery pipe is located above the blanking pipe, and a control valve is provided in the recovery pipe.

[0010] In this embodiment, the screening component further includes a rotating bearing, and the outer ring and the inner ring of the rotating bearing are respectively connected to the feeding tank and the screen barrel.

[0011] In this embodiment, the rotation driving mechanism includes a rotation motor, a first synchronous pulley, a second synchronous pulley and a synchronous belt. The rotation motor is connected to the bracket, the first synchronous pulley is connected to the rotation motor, the second synchronous pulley is connected to the positioning plate, the second synchronous pulley is provided with a second relief hole for passing through the push rod, and the synchronous belt is wound around the first synchronous pulley and the second synchronous pulley.

[0012] In this embodiment, the material pushing component further includes a linear bearing. The outer ring of the linear bearing is connected to the bracket, and the push rod is connected to the inner ring of the linear bearing. The lifting driving mechanism is a cylinder.

[0013] In this embodiment, the material pushing member includes a plurality of material pushing blades. The number of the material pushing blades is equal to the number of the brush bristles. One ends of all the material pushing blades are connected to the push rod, and each brush bristle is respectively connected to a side of each material pushing blade away from the push rod.

[0014] In this embodiment, a non-zero included angle is formed between the material pushing blade and the horizontal plane.

[0015] In this embodiment, there are at least two material pushing members, and all the material pushing members are evenly distributed along the extending direction of the push rod.

[0016] The embodiment of the present utility model has at least the following beneficial effects:

[0017] By driving the screen barrel to rotate through the rotation drive mechanism, the essence raw materials can be efficiently screened under the action of centrifugal force. The essence raw materials that meet the size requirements can enter the feeding tank through the mesh holes of the screen barrel, and these essence raw materials can be output from the feeding pipe under the action of gravity to achieve feeding. The screening effect is good and the screening efficiency is high. In addition, by driving the material pushing member to move up and down in the screen barrel through the lifting drive mechanism, the essence raw materials inside the screen barrel can be effectively pushed, the positions of the essence raw materials in the screen barrel can be effectively dispersed and reorganized, the screening efficiency can be effectively improved, and problems such as caking and accumulation can be avoided. The brush that moves with the material pushing member can also perform on-line cleaning on the inner side of the screen barrel, effectively avoiding the blockage of the mesh holes of the screen barrel, effectively improving the reliability of the screening operation, with high screening and feeding efficiency and high on-line cleaning efficiency, effectively saving the maintenance time of stopping the line for cleaning. During operation, relative rotation and relative lifting actions are formed between the material pushing member and the screen barrel, which can significantly improve the efficiency of dispersing and reorganizing the essence raw materials in the screen barrel, further improve the screening efficiency, and effectively improve the comprehensiveness of the cleaning of the inner side of the screen barrel by the brush, with good cleaning effect and effectively maintaining the screening performance of the screen barrel. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0019] Figure 1 is a three-dimensional structural schematic diagram of the screening device for essence raw materials according to an embodiment of the present utility model;

[0020] Figure 2 is an internal structural schematic diagram of the screening device for essence raw materials according to an embodiment of the present utility model with the bracket hidden;

[0021] Figure 3 is an internal structural schematic diagram of the screening device for essence raw materials according to an embodiment of the present utility model with the bracket hidden from another perspective;

[0022] Figure 4 is a top view structural schematic diagram of the screening device for essence raw materials according to an embodiment of the present utility model;

[0023] Figure 5 is along Figure 4 the sectional structural schematic diagram taken along A-A' in

[0024] Reference Numerals:

[0025] Housing assembly 100, bracket 110, feeding tank 120, feeding pipe 121;

[0026] Screening component 200, screen barrel 210, recovery pipe 211, control valve 212, positioning plate 220, first relief hole 221, rotary drive mechanism 230, rotary motor 231, first synchronous pulley 232, second synchronous pulley 233, synchronous belt 234, second relief hole 235, rotating bearing 240;

[0027] Material pushing component 300, material pushing member 310, material pushing blade 311, push rod 320, lifting drive mechanism 330, brush 340, linear bearing 350. Specific embodiments

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, left, right, front, back, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0032] Fragrance is an artificially prepared mixture containing more than two kinds of spices, which is a mixture with a certain aroma and is mainly used to add fragrance to products so that the products form corresponding aromas. The preparation of fragrance requires the blending and mixing of various raw materials. In traditional technologies, the preparation of fragrance mainly involves weighing and preparing the raw materials, and then mixing the weighed raw materials. During the mixing process, the preparation efficiency of the fragrance is often affected by the melting efficiency of the raw materials, and even the quality of the fragrance may be affected. To improve the quality and preparation efficiency of fragrance, in related technologies, before blending and mixing the fragrance, a sieve is used to screen the raw materials to obtain raw materials that meet the size requirements. However, this screening method is achieved by the action of vibration or gravity, and there are problems such as low screening efficiency and easy blockage of the mesh holes.

[0033] Especially when dealing with fragrance raw materials containing a large amount of fine particles or viscous substances, these problems are particularly prominent. Therefore, a more efficient and accurate screening device is needed to meet the production requirements. Although the existing screening devices have improved the screening efficiency to a certain extent, most of them have problems such as complex structure, cumbersome operation, and high maintenance costs. In addition, for such special materials as fragrance raw materials, the hygiene and easy cleaning during the screening process also need to be considered to avoid cross-contamination of raw materials and difficulties in equipment maintenance. Based on the above background, the present invention proposes a screening device for fragrance raw materials, aiming to achieve efficient and accurate screening of fragrance raw materials through the combination of a rotating sieve and a lifting feeding component, while simplifying the equipment structure and improving the operation convenience and cleaning efficiency.

[0034] The following refers to the attached Figure 1 to the attached Figure 5 , to describe the screening device for fragrance raw materials of the embodiments of the present utility model, which can achieve efficient filtration and screening of fragrance raw materials through a mechanical structure, and the mesh holes have good smoothness.

[0035] Referring to Figures 1 to 5 , a screening device for fragrance raw materials of the embodiments of the present utility model includes:

[0036] A housing assembly 100, including a bracket 110 and a feeding tank 120. The feeding tank 120 is fixedly connected to the bracket 110. A feeding pipe 121 is provided at the bottom of the feeding tank 120, and the feeding pipe 121 is used to output the fragrance raw materials inside the feeding tank 120. Preferably, a solenoid valve is provided in the feeding pipe 121, and the solenoid valve is used to control the on-off of the feeding pipe 121;

[0037] The screening material assembly 200 includes a screen barrel 210, a positioning plate 220 and a rotating drive mechanism 230. The screen barrel 210 is a cylindrical barrel structure. The screen barrel 210 is arranged in the feed tank 120. A gap is formed between the outer side of the screen barrel 210 and the inner wall of the feed tank 120. The screen barrel 210 is used to load and filter the essence raw materials into the feed tank 120. The top of the screen barrel 210 is fixedly connected to the positioning plate 220. The positioning plate 220 is connected to the rotating drive mechanism 230. The rotating drive mechanism 230 is used to drive the screen barrel 210 to rotate through the positioning plate 220. The flavor raw material in the net barrel 210 moves radially toward the outside of the screen barrel 210 under the action of centrifugal force, and the flavor raw material particles that meet the size can pass through the screen barrel 210 and reach the area outside the screen barrel 210 in the supply tank 120, and the flavor raw material particles that are smaller than the mesh size of the screen barrel 210 can be screened out. The rotation drive mechanism 230 is connected to the bracket 110, and the positioning plate 220 is rotatably connected to the supply tank 120 or the bracket 110 to improve the stability of the rotation action of the positioning plate 220 and the screen barrel 210. The center of the positioning plate 220 is provided with a first clearance hole 221;

[0038] The material feeding assembly 300 includes a material feeding member 310, a push rod 320, and a lifting drive mechanism 330. The material feeding member 310 is disposed inside the screen barrel 210. The push rod 320 is perpendicular to the horizontal plane, and the push rod 320 passes through the barrel opening of the screen barrel 210 and the first relief hole 221. The material feeding member 310 is connected to the push rod 320. The top of the push rod 320 is connected to the lifting drive mechanism 330. The lifting drive mechanism 330 is used to drive the material feeding member 310 to lift through the push rod 320. The lifting material feeding member 310 can push and stir the essence raw materials inside the screen barrel 210 during lifting, which can effectively prevent the essence raw materials from accumulating in the screen barrel 210. Since the material feeding member 310 lifts relative to the bracket 110 and the screen barrel 210 rotates relative to the bracket 110, with respect to the material feeding member 310 and the screen barrel 210, the material feeding member 310 rotates and lifts relative to the screen barrel 210. The material feeding member 310 can achieve a uniform and reliable stirring effect on the essence raw materials inside the screen barrel 210, which can effectively improve the filtration and screening efficiency. The lifting drive mechanism 330 is connected to the bracket 110. A plurality of uniformly spaced brushes 340 are provided at the edge of the side of the material feeding member 310 away from the push rod 320, that is, a plurality of brushes 340 are provided at the circumferential position of the material feeding member 310 facing the inside of the screen barrel 210. An interval is formed between every two adjacent brushes 340 for the essence raw materials to pass through, which can effectively ensure that the lifting action of the material feeding member 310 can proceed smoothly and can effectively improve the reliability of the operating action. The cleaning heads of the brushes 340 abut against the inside of the screen barrel 210. By cooperating with the lifting material feeding member 310 and the rotating screen barrel 210, the brushes 340 can effectively clean the inside of the screen barrel 210, and the cleaning effect is comprehensive and reliable, which can effectively prevent the mesh holes of the screen barrel 210 from being blocked and can effectively ensure the efficiency of screening and feeding. The rotation axis of the screen barrel 210 is collinear with the push rod 320. The material feeding member 310 is located inside the screen barrel 210 and an interval is formed between the material feeding member 310 and the inside of the screen barrel 210, which can prevent the screen barrel 210 from colliding with the material feeding member 310 during rotation and can effectively improve the reliability of the actions of the screen barrel 210 and the material feeding member 310 during operation.

[0039] The working process of the screening device for flavor raw materials in the embodiment of the utility model is as follows: The flavor raw materials to be screened are put into the screen barrel 210. The rotation driving mechanism 230 drives the positioning plate 220 to rotate, and the screen barrel 210 rotates following the positioning plate 220. The flavor raw materials rotate following the screen barrel 210. Under the action of centrifugal force, the flavor raw materials meeting the size requirements pass through the mesh holes of the screen barrel 210 and enter the interior of the feeding tank 120. These screened flavor raw materials fall from the feeding pipe 121 under the action of gravity to achieve feeding. During the rotation of the screen barrel 210, the lifting driving mechanism 330 simultaneously drives the material pushing member 310 to move up and down. The lifting material pushing member 310 can push and move the flavor raw materials in the screen barrel 210 up and down, effectively avoiding problems such as caking and accumulation of the flavor raw materials. Moreover, the brush 340 at the circumferential edge of the material pushing member 310 cleans the inner side of the screen barrel 210, effectively avoiding the blockage of the mesh holes of the screen barrel 210.

[0040] By driving the screen barrel 210 to rotate through the rotation driving mechanism 230, the flavor raw materials can be efficiently screened under the action of centrifugal force. The flavor raw materials meeting the size requirements can pass through the mesh holes of the screen barrel 210 and enter the feeding tank 120. And these flavor raw materials can be output from the feeding pipe 121 under the action of gravity to achieve feeding. The screening effect is good, and the screening efficiency is high. When used for operations such as mixing in subsequent processes to prepare flavors, it can effectively ensure the uniformity of mixing, effectively improve the quality of the prepared flavors, and effectively improve the production efficiency of preparation. By driving the screen barrel 210 to rotate in different directions, the screening effect and screening efficiency can be further effectively improved.

[0041] In addition, by driving the material shifting member 310 to move up and down within the screen barrel 210 through the lifting drive mechanism 330, it can effectively stir the essence raw materials inside the screen barrel 210, effectively disperse and reorganize the positions of the essence raw materials in the screen barrel 210, effectively improve the screening efficiency, and avoid problems such as caking and accumulation of the essence raw materials. Under the action of centrifugal force, large particle essence raw materials may accumulate on the inner side of the screen barrel 210. The brush 340 following the movement of the material shifting member 310 can also perform on-line cleaning of the inner side of the screen barrel 210, effectively avoid clogging of the mesh holes of the screen barrel 210, effectively improve the reliability of the screening operation, have a high screening and feeding efficiency, a high on-line cleaning efficiency, and do not require additional operations for cleaning, effectively saving the maintenance time of stopping the line for cleaning, further improving the screening and feeding efficiency. During operation, relative rotation and relative lifting actions are formed between the material shifting member 310 and the screen barrel 210, which can significantly improve the efficiency of dispersing and reorganizing the essence raw materials in the screen barrel 210, further improve the screening efficiency, and effectively improve the comprehensiveness of the cleaning of the inner side of the screen barrel 210 by the brush 340, with a good cleaning effect, effectively maintaining the screening performance of the screen barrel 210, thus effectively ensuring the screening effect and effectively improving the screening efficiency.

[0042] It can be understood that a recovery pipe 211 is provided at the bottom of the screen barrel 210. The recovery pipe 211 is located directly above the feeding pipe 121. A control valve 212 is provided in the recovery pipe 211. Through the control valve 212, the on-off of the recovery pipe 211 can be controlled, thereby controlling the falling of the essence raw materials that have not passed through the mesh holes in the screen barrel 210.

[0043] During application, the screening assembly 200 cooperates with the material shifting assembly 300 to screen the essence raw materials. The essence raw materials meeting the size requirements can enter the feeding tank 120 through the mesh holes of the screen barrel 210. After long-term use, when a certain amount of essence raw materials that do not meet the size requirements and have not passed through the mesh holes of the screen barrel 210 accumulate in the screen barrel 210, disconnect the connection between the feeding pipe 121 and the receiving equipment, and set a receiving structure such as a recovery box below the feeding pipe 121. Open the control valve 212 to open the feeding pipe 121. The essence raw materials that do not meet the size requirements fall from the recovery pipe 211 through the feeding pipe 121 into the receiving structure to empty the waste materials in the screen barrel 210, effectively ensuring the screening efficiency and screening effect, and the emptying operation of the screen barrel 210 is convenient.

[0044] It can be understood that the screening component 200 further includes a rotating bearing 240. The outer ring and the inner ring of the rotating bearing 240 are respectively connected to the feeding tank 120 and the screen barrel 210, so that the screen barrel 210 can rotate smoothly relative to the feeding tank 120, and the inner ring of the rotating bearing 240 can rotate smoothly relative to the outer ring. By means of the rotating bearing 240, the screen barrel 210 is rotationally connected to the feeding tank 120, which can effectively increase the effective screening space of the screen barrel 210 and can effectively reduce the material input cost of the screen barrel 210.

[0045] It can be understood that the rotation driving mechanism 230 includes a rotation motor 231, a first synchronous pulley 232, a second synchronous pulley 233 and a synchronous belt 234. The rotation motor 231 is connected to the bracket 110, the first synchronous pulley 232 is connected to the rotation motor 231, the first synchronous pulley 232 is rotatably connected to the bracket 110, and the rotation motor 231 is used to drive the first synchronous pulley 232 to rotate. The second synchronous pulley 233 is fixedly connected to the positioning plate 220, and the second synchronous pulley 233 is provided with a second relief hole 235 for passing through the push rod 320. The push rod 320 passes through the second relief hole 235, and the synchronous belt 234 is wound around the first synchronous pulley 232 and the second synchronous pulley 233, so that the first synchronous pulley 232 and the second synchronous pulley 233 rotate synchronously.

[0046] During operation, the rotation motor 231 drives the first synchronous pulley 232 to move. Under the action of the synchronous belt 234, the second synchronous pulley 233 rotates synchronously, thereby driving the screen barrel 210 to rotate through the positioning frame.

[0047] It can be understood that in addition to being arranged in the above structure, the rotation driving mechanism 230 can also be arranged as a rotation motor 231, a worm gear and a worm. The worm is connected to the motor, the worm gear is fixedly connected to the positioning plate 220, and the worm gear is meshed with the worm. The rotation motor 231 can drive the positioning plate 220 to rotate through the worm gear and the worm, thereby rotating the screen barrel 210 to realize the screening action.

[0048] In addition to being arranged in the above two structures, the rotation driving mechanism 230 can also be other structures that can drive the positioning block to rotate.

[0049] It can be understood that the material pushing component 300 further includes a linear bearing 350. The outer ring of the linear bearing 350 is connected to the bracket 110, and the push rod 320 is connected to the inner ring of the linear bearing 350. By means of the linear bearing 350, the stability of the lifting action of the push rod 320 can be effectively improved. The lifting driving mechanism 330 is a cylinder, the cylinder block of the cylinder is connected to the bracket 110, and the push rod 320 is connected to the output end of the cylinder, and can be specifically set as a double-stroke cylinder or the like.

[0050] In addition to being configured as a cylinder, the lifting drive mechanism 330 can also be configured as a lead screw mechanism or other mechanisms capable of achieving translation.

[0051] It can be understood that the material pushing member 310 includes a plurality of material pushing blades 311. The number of the material pushing blades 311 is equal to the number of the brushes 340. One ends of all the material pushing blades 311 are connected to the push rod 320. Each brush 340 is respectively connected to one side of each corresponding material pushing blade 311 away from the push rod 320, that is, each brush 340 is respectively connected to one side of each corresponding material pushing blade 311 close to the screen barrel 210. The fragrance raw materials in different areas in the screen barrel 210 can be agitated by the plurality of material pushing blades 311, which can effectively improve the filtering and screening efficiency, and can effectively improve the cleaning efficiency and cleaning effect on the screen barrel 210 at the same time.

[0052] It can be understood that a non-zero angle is formed between the material pushing blade 311 and the horizontal plane, that is, the material pushing blade 311 is arranged obliquely to the horizontal plane, which can effectively improve the reliability of the action when the material pushing blade 311 cuts into the fragrance raw materials, can effectively reduce the resistance received when the material pushing blade 311 moves up and down, can effectively improve the stability of the up and down movement of the material pushing blade 311, can effectively improve the effect of stirring and dispersing the fragrance raw materials, and can cooperate with the rotating screen barrel 210 to form a more efficient filtering and screening operation.

[0053] It can be understood that crushing blades are arranged on opposite side edges of the material pushing blade 311, that is, opposite side edges of the material pushing blade 311 are arranged as blade-shaped structures narrowing towards the center. Through the relative rotation between the material pushing blade 311 and the screen barrel 210, the crushing blades can crush some fragrance raw materials, which can effectively improve the size qualification rate of the fragrance raw materials in the screen barrel 210.

[0054] Specifically, to improve the material pushing and dispersing efficiency and cleaning effect, at least two material pushing members 310 are provided. All the material pushing members 310 are evenly distributed along the extending direction of the push rod 320, and all the material pushing members 310 are connected to the push rod 320.

[0055] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sieving device for flavor raw materials, characterized in that: include: A casing assembly (100) comprises a bracket (110) and a material supply tank (120), wherein the material supply tank (120) is connected to the bracket (110), and a material discharge pipe (121) is provided at the bottom of the material supply tank (120); A screening material assembly (200) comprises a screen barrel (210), a positioning plate (220) and a rotation drive mechanism (230), wherein the screen barrel (210) is arranged in the material supply tank (120), and the screen barrel (210) is used for filtering and screening essence raw materials, the top of the screen barrel (210) is connected to the positioning plate (220), the positioning plate (220) is connected to the rotation drive mechanism (230), the rotation drive mechanism (230) is used for driving the screen barrel (210) to rotate through the positioning plate (220), the rotation drive mechanism (230) is connected to the bracket (110), the positioning plate (220) is rotatably connected to the material supply tank (120) or the bracket (110), and a first clearance hole (221) is provided at the center of the positioning plate (220); The material shifting assembly (300) comprises a material shifting member (310), a push rod (320) and a lifting and lowering driving mechanism (330), wherein the material shifting member (310) is arranged in the screen barrel (210), the push rod (320) is perpendicular to a horizontal plane, the push rod (320) is passed through the barrel opening of the screen barrel (210) and the first clearance hole (221), the material shifting member (310) is connected to the push rod (320), and the top of the push rod (320) is connected to the lifting and lowering driving mechanism (330). 30), the lifting drive mechanism (330) is used to drive the material-pickup member (310) to lift and lower through the push rod (320), the lifting drive mechanism (330) is connected to the bracket (110), and a plurality of brushes (340) distributed at equal intervals are provided at the edge of the material-pickup member (310) away from the push rod (320), the brushes (340) are in contact with the inner side of the screen barrel (210), and the rotation axis of the screen barrel (210) is colinear with the push rod (320).

2. A sieving device for flavor raw materials according to claim 1, characterized in that: A recovery pipe (211) is provided at the bottom of the screen barrel (210), and the recovery pipe (211) is located above the feed pipe (121). A control valve (212) is provided in the recovery pipe (211).

3. A sieving device for flavor raw materials according to claim 1, characterized in that: The screening material assembly (200) further comprises a rotating bearing (240), the outer ring and the inner ring of the rotating bearing (240) being respectively connected to the material supply tank (120) and the screen barrel (210).

4. The device for screening essence raw materials according to claim 1, characterized in that: The rotary drive mechanism (230) comprises a rotary motor (231), a first synchronous wheel (232), a second synchronous wheel (233) and a synchronous belt (234); the rotary motor (231) is connected to the bracket (110); the first synchronous wheel (232) is connected to the rotary motor (231); the second synchronous wheel (233) is connected to the positioning plate (220); the second synchronous wheel (233) is provided with a second clearance hole (235) for passing the push rod (320); and the synchronous belt (234) is wound around the first synchronous wheel (232) and the second synchronous wheel (233).

5. The device for screening essence raw materials according to claim 1, characterized in that: The material shifting assembly (300) further comprises a linear bearing (350), the outer ring of the linear bearing (350) is connected to the bracket (110), the push rod (320) is connected to the inner ring of the linear bearing (350), and the lifting drive mechanism (330) is a cylinder.

6. The device for screening essence raw materials according to claim 1, characterized in that: The material-moving member (310) comprises a plurality of material-moving blades (311), the number of the material-moving blades (311) being equal to the number of the brushes (340), one end of all the material-moving blades (311) being connected to the push rod (320), and each of the brushes (340) being respectively connected to a side of each of the material-moving blades (311) away from the push rod (320).

7. A sieving device for flavor raw materials according to claim 6, characterized in that: A non-zero angle is formed between the material-moving blade (311) and the horizontal plane.

8. A sieving device for flavor raw materials according to any one of claims 6 or 7, characterized in that: At least two of the material-moving members (310) are provided, and all of the material-moving members (310) are evenly distributed along the extension direction of the push rod (320).

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