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CN-121972404-A - Winnowing machine for green tea processing

CN121972404ACN 121972404 ACN121972404 ACN 121972404ACN-121972404-A

Abstract

The invention relates to the technical field of tea processing equipment and discloses a fanning machine for green tea processing, which comprises a motor, a transmission shaft, a belt pulley group, a driving shaft and a bracket, wherein the motor drives the transmission shaft and the driving shaft to rotate, the driving shaft is connected with a cam, a grading groove is arranged in the cam to drive a cross rod to reciprocate, the cross rod drives a material homogenizing plate with carding teeth to swing and scatter raw materials, an airflow guiding structure comprising a contraction section, a throat section and an expansion section is arranged below the material homogenizing plate, and a vortex groove is arranged on the inner wall of the expansion section to assist airflow sorting. The air separation cavity is internally provided with an interception mechanism consisting of a connecting rod, a spring and an elastic hook tooth. According to the invention, the problem of raw material agglomeration is solved by mechanical vibration and material homogenization, the separation precision is improved by utilizing Venturi vortex airflow, and the flat yellow slices are effectively removed by matching with a dead weight type mechanical interception mechanism, so that the efficiency of green tea winnowing and the purity of finished products are remarkably improved.

Inventors

  • YE YULONG
  • FANG CHUNYAN
  • YE XIANLIN
  • GONG YIYUN
  • Ye Jiuhu
  • ZENG MIN
  • HUANG FAN
  • ZHANG LIPING

Assignees

  • 四川省农业科学院茶叶研究所
  • 四川省农业科学院农业质量标准与检测技术研究所

Dates

Publication Date
20260505
Application Date
20260407

Claims (10)

  1. 1. The fanning machine for matcha processing comprises a motor (1), a transmission shaft (4), a belt pulley set (5), a driving shaft (6) and a bracket (7), and is characterized in that the output end of the motor (1) is fixedly connected to one end of the transmission shaft (4) through a coupler, the outer surface of the transmission shaft (4) is fixedly connected to the driving end of the belt pulley set (5), the inner wall of the driven end of the belt pulley set (5) is fixedly connected to the driving shaft (6), the outer surface of the driving shaft (6) is rotatably connected to the bracket (7), and the bracket (7) is used for providing support; still include feeding average material subassembly, air current guide structure (3) and be provided with selection by winnowing chamber (201) of interception mechanism (2), the surface fixedly connected with cam (8) of drive shaft (6), closed orbit's classifying groove (9) have been seted up to the inner wall of cam (8), the inside sliding connection of classifying groove (9) has horizontal pole (10), the tip surface of horizontal pole (10) is through connecting piece (12) fixedly connected with samming board (13), samming board (13) are located the feeding top of air current guide structure (3), the inner wall fixedly connected with of samming board (13) divides broach (14); When the motor (1) drives the cam (8) to rotate, the cam (8) drives the cross rod (10) to do horizontal reciprocating motion through the classifying groove (9), so as to drive the material homogenizing plate (13) and the carding teeth (14) to break up raw materials, the output end of the airflow guiding structure (3) is communicated with the winnowing cavity (201), and the intercepting mechanism (2) is positioned in an internal airflow channel of the winnowing cavity (201).
  2. 2. The fanning machine for matcha processing according to claim 1, wherein the inner wall of the cross bar (10) is provided with a threaded hole, the threaded hole is internally and in threaded connection with a manual bolt (11), the tail end of the manual bolt (11) is abutted in a fit clearance between the cross bar (10) and the classifying groove (9), and the relative fixed position of the cross bar (10) in the classifying groove (9) is adjusted by rotating the manual bolt (11), so that the eccentricity of the reciprocating motion of the material homogenizing plate (13) is adjusted.
  3. 3. The fanning machine for matcha processing according to claim 1, wherein the airflow guiding structure (3) comprises a feeding hole (301), a sorting channel (302) and an air supply pipeline (307), the feeding hole (301) is vertically arranged, the connecting piece (12) penetrates through the side wall of the feeding hole (301) to be fixedly connected with the homogenizing plate (13) located inside the feeding hole, and the bottom end of the feeding hole (301) is communicated with the upper wall surface of the sorting channel (302).
  4. 4. The fanning machine for matcha processing according to claim 3, wherein the separation channel (302) is of a venturi-shaped structure, a contraction section (303), a throat section (304) and an expansion section (305) are sequentially communicated with the inner wall of the separation channel (302) along the airflow direction, one end of the air supply channel (307) is communicated with the inlet end of the contraction section (303), and the outer wall of the air supply channel (307) is fixedly connected with the outer wall of the fanning cavity (201).
  5. 5. The fanning machine for green tea processing according to claim 4, wherein a plurality of vortex grooves (306) are formed in the inner wall of the expansion section (305), and the vortex grooves (306) are arc-shaped concave and are used for forming directional vortex airflow in the airflow diffusion area of the expansion section (305) to assist material separation.
  6. 6. The fanning machine for matcha processing according to claim 1, wherein the interception mechanism (2) comprises a separation plate (202) and a support plate (203), wherein the separation plate (202) is vertically and fixedly connected to the inner wall of the fanning cavity (201), the top of the separation plate (202) is fixedly connected to the bottom of the support plate (203), and the support plate (203) is horizontally arranged in the fanning cavity (201) in an extending mode.
  7. 7. The fanning machine for matcha processing of claim 6, wherein the intercepting mechanism (2) further comprises a rotating shaft (204) and a connecting rod (205), wherein the inner wall of the supporting plate (203) is provided with a mounting hole, the rotating shaft (204) is rotatably connected in the mounting hole, one end of the connecting rod (205) is rotatably sleeved on the outer surface of the rotating shaft (204), and the connecting rod (205) can rotate around the rotating shaft (204) in a vertical plane.
  8. 8. The fanning machine for matcha processing according to claim 7, wherein the outer surface of the connecting rod (205) is rotatably connected with a plurality of elastic hook teeth (208) at intervals along the length direction, the elastic hook teeth (208) are obliquely arranged along the direction deviating from the air flow, and the tail ends of the elastic hook teeth (208) are provided with barb structures for hooking flat impurities.
  9. 9. The fanning machine for matcha processing according to claim 8, wherein the inner wall side of the connecting rod (205) is fixedly connected with a connecting column (206), a spring (207) is fixedly connected between the connecting column (206) and the outer wall of the supporting plate (203), the spring (207) is in a stretched state to provide elastic tension required by resetting of the connecting rod (205), the fanning chamber (201) is of a rectangular box structure, an observation window is arranged on the side wall of the fanning chamber (201), and the tail end of the expansion section (305) of the sorting channel (302) is horizontally communicated to the side wall opening of the fanning chamber (201).
  10. 10. The fanning machine for green tea processing according to claim 1, wherein the belt pulley set (5) comprises a driving wheel, a driven wheel and a driving belt, the driving wheel is fixedly sleeved on the driving shaft (4), the driven wheel is fixedly sleeved on the driving shaft (6), and the driving belt is in tensioning connection between the driving wheel and the driven wheel.

Description

Winnowing machine for green tea processing Technical Field The invention relates to the technical field of tea processing equipment, in particular to a winnowing machine for green tea processing. Background The green tea is taken as a tea product which is deeply favored by consumers, the processing technology of the green tea has extremely high requirements on the purity of raw materials, in the production process of the green tea, the air separation is an extremely important process, the green tea is mainly used for separating stems, yellow slices and other impurities in tea leaves from high-quality tea leaves, the traditional air separation equipment usually utilizes the specific gravity difference of the materials to realize separation by blowing and floating by wind force, but in the actual production, the single air separation mode often faces a plurality of challenges. At present, before raw green tea materials get into winnowing equipment, because raw materials self water content or static factor, very easily appear caking phenomenon, when the material of caking directly gets into the selection by winnowing passageway, not only can not form even bed of material, still can lead to the air current unable material piece that pierces through for the impurity of parcel in the piece inside can't be separated, seriously influence the thoroughness of selection by winnowing, current selection by winnowing equipment adopts straight-through wind channel more, the air current orbit is single, to some weight lighter but flat yellow piece impurity, only rely on sharp air current hardly with its with same light high-quality tealeaves effectively distinguish, lead to the yellow piece to be collected along with tealeaves together, reduced the quality of finished product, these flat impurity still adsorb at equipment inner wall or jam passageway easily, the clearance is difficult, the continuity of production has been influenced. Therefore, the invention provides a fanning machine for green tea processing, which solves the defects in the prior art. Disclosure of Invention Aiming at the problems that in the prior art, feeding materials are easy to agglomerate and accumulate to cause incomplete sorting, and impurities in flat yellow slices lack effective separation means to cause low purity of finished products and are easy to mix with impurities, the invention aims to provide a fanning machine for green tea processing, which has an improved structure and can effectively solve the problems. The invention provides a fanning machine for green tea processing, which mainly comprises a motor, a transmission shaft, a belt pulley group, a driving shaft and a bracket, and also integrates a feeding and homogenizing component and a fanning separation component, wherein the output end of the motor serving as a power source is fixedly connected with the transmission shaft, and the transmission shaft drives the driving shaft arranged on the bracket to rotate through the belt pulley group. In the device, drive shaft surface fixedly connected with cam, the grading tank of special orbit has been seted up to the cam inner wall, sliding connection has the horizontal pole in the grading tank, the horizontal pole surface is through connecting piece fixedly connected with samming board, samming board inner wall fixedly connected with a plurality of carding teeth, the horizontal pole receives the grading tank to drive the samming board and divide the broach swing, realize the breaking up of raw materials, samming board below is equipped with airflow guiding structure, airflow guiding structure intercommunication has the selection by winnowing chamber, the selection by winnowing intracavity portion is equipped with interception mechanism. Preferably, the inner wall of horizontal pole is equipped with manual bolt, and manual bolt adopts threaded connection mode cooperation with the horizontal pole, through adjusting manual bolt, can change the fixed position of horizontal pole in the classifying tank, and then adjusts the eccentric distance to the required vibration of adaptation different raw materials breaks up the range. Preferably, the air flow guiding structure is designed as a Venturi tube type flow passage, and comprises a feed inlet, a sorting passage and an air supply passage, wherein the bottom end of the feed inlet is communicated with the sorting passage, the inner wall of the sorting passage is sequentially communicated with a contraction section, a throat section and an expansion section, one end of the air supply passage is communicated with the contraction section, and the other end of the air supply passage is fixed on the outer wall of the air separation cavity to provide a power air source for the system. Preferably, the inner wall of the expansion section is provided with a vortex groove, the vortex groove is used for forming directional vortex airflow in an airflow deceleration diffusion area, and the centrifugal force is