Parallel roller type matcha stem and leaf separating machine unit and control method

Abstract

The present application relates to the technical field of matcha processing, and relates to a parallel roller type matcha stem and leaf separating unit and a control method. The present application realizes the automation and continuous production of the tea stem and leaf separating process through the specific design of the parallel roller type stem and leaf separating unit, the weighing and feeding unit, and the separating and conveying unit, so that the tea stem and leaf separating process can be connected in series with the front and rear tea drying process and the grinding process to form a matcha processing production line. The operation of the related equipment is directly controlled by the control system, manual intervention in the matcha production process is reduced, the sanitary quality of the matcha production is improved, and the intelligentization, cleanization and continuous production of the matcha production are facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of matcha processing, and relates to a parallel roller type matcha stem and leaf separation unit and a control method. BACKGROUND

[0002] Matcha is a kind of ultra-fine green tea powder made from the tender buds of tea trees covered by shade cloth, through steam or hot air fixation, dehydration, drying, crushing and other processes.

[0003] At present, when matcha is ground, the whole tea leaf blade is usually crushed, and the stems contained in the leaf blade are also ground into powder and mixed in the finished matcha, which makes the finished matcha taste bitter. At the same time, the appearance of the finished matcha is affected by the presence of different colors, which reduces the quality of the matcha product. The current tea stem and leaf separation equipment is in the form of a single machine, and the stem and leaf separation efficiency is not high, the separation quality is poor, and it is not conducive to the automation and continuous production of the tea stem and leaf separation process.

[0004] Therefore, for matcha production, it is of great significance to peel the tea leaf blade from the stem and realize the continuous production of the tea stem and leaf separation process, which can improve the quality of matcha products and realize the clean and continuous production of matcha. SUMMARY

[0005] In order to avoid and overcome the technical problems existing in the prior art, the present application provides a parallel roller type matcha stem and leaf separation unit and a control method. The present application can realize the intelligentization, cleanization and continuous production of matcha production.

[0006] To achieve the above object, the present application provides the following technical scheme:

[0007] Parallel roller type matcha stem and leaf separating unit, comprising a weighing and feeding unit for quantitative transportation of matcha raw materials, a parallel roller type stem and leaf separating unit is arranged at the discharge port of the weighing and feeding unit for crushing the matcha raw materials, a airflow and vibration combined separating unit is installed at the discharge port of the parallel roller type stem and leaf separating unit for separating the stem and leaf formed after the matcha raw materials are crushed, and a separating conveying unit is arranged at the discharge port of the airflow and vibration combined separating unit for separate transportation of the separated stem and leaf; the parallel roller type stem and leaf separating unit comprises a first stem and leaf separating part, a second stem and leaf separating part, a third stem and leaf separating part and a fourth stem and leaf separating part which are arranged side by side in sequence and have the same structure; the first stem and leaf separating part comprises a screen mesh which is fixedly installed on a roller support and has a conical shape with a large upper part and a small lower part, and a screen inner cylinder is coaxially arranged in the cylinder cavity of the screen mesh, a spiral blade is coaxially fixed on the outer side surface of the screen inner cylinder, and a primary crushing gap for passing the matcha raw materials and primary rolling and crushing the matcha raw materials is formed between the blade edge of the blade and the screen inner cylinder surface; the airflow and vibration combined separating unit comprises a separating screen plate for receiving the crushed matcha raw materials, and the separating screen plate is a wave plate; the separating screen plate is in an inclined state and forms a certain angle with the x, y and z three axes in the space; a steel plate spring piece is fixedly installed at the bottom of each corner of the separating screen plate and arranged axially vertically, an adjustable height support is hinged to the bottom of each steel plate spring piece, and the axial direction of the hinge shaft and the length direction of the groove on the wave plate are parallel to each other; a vibration motor is arranged beside the separating screen plate, a crank disc is coaxially fixed on the motor shaft of the vibration motor, a connecting rod is hinged to the eccentric part of the crank disc, and the axial line of the hinge shaft of the connecting rod on the crank disc and the axial line of the crank disc are parallel to each other; the other end of the connecting rod is hinged to the separating screen plate, and the axial line of the hinge shaft of the connecting rod on the separating screen plate, the axial line of the hinge shaft of the connecting rod on the crank disc and the axial line of the hinge shaft of the bottom of each steel plate spring piece are arranged parallel to each other; a centrifugal fan is arranged on one side of the separating screen plate, the wind direction of the centrifugal fan is perpendicular to the length direction of the groove on the wave plate, and the matcha raw materials lifted up are located on the airflow path of the centrifugal fan.

[0008] As a further scheme of the present application: a funnel with a large upper part and a small lower part is coaxially fixed at the inlet of the screen mesh, and the inner cylinder surface of the funnel and the screen mesh form a smooth transition and a conical surface with a large upper part and a small lower part.

[0009] As a further scheme of the present application: a disc-shaped circular screen mesh is reversely covered at the bottom of the screen mesh, a turntable is coaxially hung at the bottom of the screen inner cylinder, a plurality of bottom screen scraping plates are uniformly arranged on the outer side surface of the turntable in sequence around the circumference of the turntable, and a secondary crushing gap for secondary rolling and crushing the matcha raw materials is formed between each bottom screen scraping plate and the circular screen mesh.

[0010] As a further scheme of the present application: the bottom screen rotating shaft is coaxially hinged in the corresponding bottom screen support frame, and the shaft end of the bottom screen rotating shaft penetrates through the corresponding bottom screen support frame and is fixed with the bottom screen rotating motor, and the bottom screen rotating motor provides the overturning power for the circular screen.

[0011] As a further scheme of the present application: the weighing and feeding unit comprises a vertical elevator capable of lifting the matcha raw material to a set height, and a feeding conveyor belt arranged below the discharge port of the vertical elevator to receive the matcha raw material.

[0012] As a further scheme of the present application: the separation and conveying unit comprises a second belt conveyor for receiving the leaves blown down by the centrifugal fan, and a first belt conveyor for receiving the stems swept down from the separation screen.

[0013] A control method applied to the parallel roller type matcha stem and leaf separation unit, comprising the following steps:

[0014] Step one: the control system controls the vertical elevator to start, and the matcha raw material is fed into the vertical elevator from the feeding port of the vertical elevator; the vertical elevator lifts the matcha raw material to a set height, and then the matcha raw material falls from the discharge port of the vertical elevator to the feeding conveyor belt below, and continuously accumulates on the feeding conveyor belt until the vertical elevator reaches the set working time, and then the control system controls the vertical elevator to stop working.

[0015] Step two: the control system controls the feeding conveyor belt to rotate, so that the matcha raw material on the feeding conveyor belt falls into the first stem and leaf separation unit below the feeding conveyor belt; and after the feeding conveyor belt reaches the set working time, the control system controls the feeding conveyor belt to stop working.

[0016] Step three: the feeding conveyor belt is fed in the manner of step one, and then the control system controls the feeding conveyor belt to move to the second stem and leaf separation unit, the third stem and leaf separation unit and the fourth stem and leaf separation unit after completing the feeding, and the matcha raw material is respectively put into the second stem and leaf separation unit, the third stem and leaf separation unit and the fourth stem and leaf separation unit in the manner of step two; each time the feeding conveyor belt completes the feeding, it will return to the initial position, i.e. the position above the first stem and leaf separation unit.

[0017] Step four: the control system controls the screen inner cylinder to rotate, and the matcha raw material in the screen is rolled and crushed; then the bottom screen is opened, and the matcha raw material after rolling and crushing is poured on the separation screen.

[0018] Step five, the control system controls the opening of the vibration motor and the centrifugal fan, and the tea raw materials are thrown up under the reciprocating swing of the separation sieve plate, the lighter leaves are blown off to the second belt conveyor by the centrifugal fan, and are transported away by the second belt conveyor; the heavier stems will slide from the separation sieve plate to the first belt conveyor, and are transported away by the first belt conveyor.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1、The present application realizes the automation and continuous production of the tea stem and leaf separation process through the specifically designed parallel roller type stem and leaf separation unit, the weighing feeding unit and the separation conveying unit, so that the tea stem and leaf separation process can be connected in series with the front and rear tea drying process and the grinding process to form a matcha processing production line, the related equipment is directly controlled by the control system to reduce the manual intervention in the matcha production process, improve the sanitary quality of the matcha production, and be conducive to realizing the intelligentization, cleanization and continuous production of the matcha production.

[0021] 2、The parallel round roller stem and leaf separation unit in the present application comprises four stem and leaf separation parts, and the four stem and leaf separation parts are arranged side by side in sequence, and the four stem and leaf separation parts simultaneously separate the matcha raw materials put therein, which greatly improves the work efficiency. Through the specifically designed parallel roller type stem and leaf separation unit, the separation of stems and leaves is realized through multiple stem and leaf separation forms, and the efficiency and quality of tea stem and leaf separation are effectively improved. Under the scraping of the spiral scraper on the outer wall of the screen inner cylinder, the leaf part is scraped off from the stem, so that the leaf part of the raw material is broken.

[0022] 3、The present application cooperates the screen inner cylinder with the funnel to convey the tea raw materials. When the matcha raw materials fall into the funnel of the stem and leaf separation part, the screen inner cylinder rotates, the spiral scraper on the upper half of the screen inner cylinder conveys the matcha raw materials to the lower screen, and performs the stem and leaf separation work. The advantage of this design is that it can prevent the accumulation of matcha raw materials at the funnel.

[0023] 4、Part of the stem and leaf mixture will fall to the lower part through the small holes on the outer wall of the screen, but part of the stem and leaf mixture may fall to the bottom screen. At this time, under the action of the scraper on the bottom screen, the stem and leaf mixture will be scraped again, and will fall to the lower part from the small holes of the bottom screen. If the bottom screen is accumulated, the rotating handle of the bottom screen can be turned to open the bottom screen, so as to clean the accumulated stem and leaf mixture.

[0024] 5、The application realizes the separation and cleaning of stems and leaves by the airflow vibration composite separation unit, the separation sieve plate in the airflow vibration composite separation unit is in an inclined state, and forms a certain angle with the x, y and z three axes in the space, and each angle can be controlled through the adjustable height support arranged below the four corners of the separation sieve plate, and the separation sieve plate reciprocating vibrates under the driving of the vibration motor. The stem and leaf mixture on the separation sieve plate is thrown up under the action of reciprocating vibration, through the combined action of reciprocating vibration of the separation sieve plate and the centrifugal fan, the leaf falling time is long and the movement distance is far in the falling process of the leaf thrown up, the stem falling time is short and the movement distance is near in the stem thrown up, so that the stem and leaf are separated, the airflow vibration composite separation is realized, and the stem and leaf are discharged from the discharge ports on both sides to complete the separation and cleaning. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The parallel roller type stem and leaf separation unit structure schematic diagram is provided for the application.

[0026] Figure 2 The weighing and feeding unit structure schematic diagram is provided for the application.

[0027] Figure 3 The movable forward and reverse conveying belt structure schematic diagram is provided for the application.

[0028] Figure 4 The chain structure schematic diagram in the feeding conveying traction device is provided for the application.

[0029] Figure 5 The parallel roller type stem and leaf separation unit structure schematic diagram is provided for the application.

[0030] Figure 6 The single roller type stem and leaf separation unit structure schematic diagram is provided for the application.

[0031] Figure 7 The upper half part structure schematic diagram of the single roller type stem and leaf separation unit is provided for the application.

[0032] Figure 8 The bottom screen structure schematic diagram of the lower half part of the single roller type stem and leaf separation unit is provided for the application.

[0033] Figure 9 The bottom screen scraper structure schematic diagram of the single roller type stem and leaf separation unit is provided for the application.

[0034] Figure 10 The screen inner cylinder and the screen inner cylinder and screen inner cylinder support connection structure schematic diagram is provided for the application.

[0035] Figure 11The structure diagram of the airflow vibration composite unit proposed in the present application.

[0036] Figure 12 The structure diagram of the sieve plate in the airflow vibration composite unit proposed in the present application.

[0037] Figure 13 The structure diagram of the connection between the brake motor and the crank rocker in the airflow vibration composite unit proposed in the present application.

[0038] Figure 14 The structure diagram of the connection between the brake device and the sieve plate in the airflow vibration composite unit proposed in the present application.

[0039] Figure 15 The structure diagram of the connecting rod support in the airflow vibration composite unit proposed in the present application.

[0040] Figure 16 The connection structure diagram of the sieve plate bottom spring sheet and the height-adjustable support in the airflow vibration composite unit proposed in the present application.

[0041] Figure 17 The structure diagram and internal structure section view of the height-adjustable support proposed in the present application.

[0042] Figure 18 The structure diagram of the inclined state of the separation sieve plate proposed in the present application.

[0043] In the figure: 1, parallel roller type stem and leaf separation unit; 11, first stem and leaf separation part; 12, second stem and leaf separation part; 13, third stem and leaf separation part; 14, fourth stem and leaf separation part; 15, roller support; 111, separation drive motor; 112, separation drive motor support; 113, sieve net inner cylinder support; 114, bottom sieve net scraper; 115, sieve net inner cylinder; 116, hopper; 117, sieve net; 118, bottom sieve net; 1181, bottom sieve net rotating shaft; 1182, bottom sieve net support frame; 1183, bottom sieve net rotating motor; 1184, circular sieve net.

[0044] 2, weighing and feeding unit; 21, vertical elevator; 22, feeding conveyor belt; 221, feeding conveyor belt motor; 222, forward and reverse conveyor belt; 223, feeding conveyor belt base; 224, roller; 23, feeding conveyor belt traction device; 231, traction motor; 232, driving sprocket; 233, driven sprocket; 234, traction chain; 235, sprocket support; 24, feeding mechanism support.

[0045] 3, airflow vibration compound separation unit; 31, vibration device; 311, vibration motor; 312, crank disc; 313, connecting rod; 314, vibration motor base; 32, vibration separation device; 321, separation sieve plate; 322, connecting rod support; 323, steel plate spring piece; 324, spring piece support; 325, sieve plate support shaft; 326, support; 33, airflow winnowing device; 331, winnowing brake motor; 332, centrifugal fan; 333, centrifugal fan base; 34, height-adjustable support; 341, pressing plate; 342, outer frame; 343, adjusting screw; 344, spring.

[0046] 4, separation conveying unit; 41, first belt conveyor; 42, second belt conveyor. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] Referring to Figure 1 , Figure 2 , Figure 5 and Figure 12 , the parallel roller type matcha stem and leaf separator unit proposed in the present application comprises: a parallel roller type stem and leaf separation unit 1 for separating stems and leaves from the incoming matcha raw materials; a weighing and feeding unit 2 arranged on one side of the parallel roller type stem and leaf separation unit 1 for weighing and feeding the matcha raw materials into the parallel roller type stem and leaf separation unit 1; an airflow vibration compound separation unit 3 arranged below the parallel roller type stem and leaf separation unit 1 for cleaning and separating the stem and leaf mixture flowing out of the parallel roller type stem and leaf separation unit 1, so that the stems and leaves are discharged from both sides and enter the separation conveying unit 4.

[0049] The separation conveying unit 4 is composed of a first belt conveyor 41 and a second belt conveyor 42, and the two belt conveyors are arranged at the discharge ports on both sides of the stem and leaf airflow vibration compound separation unit 3. The first belt conveyor 41 is arranged on one side of the separation sieve plate 321 for transporting the separated stems to the stem concentration area. The second belt conveyor 42 is arranged on the other side of the separation sieve plate 321 for conveying the separated leaves to the leaf concentration area.

[0050] Referring to Figures 2-4The weighing and feeding unit 2 comprises a vertical elevator 21 and a feeding conveyor belt traction device 23. The vertical elevator 21 is located on one side of the weighing and feeding unit 2 and is used to lift the matcha raw materials to a certain height and feed them into the feeding conveyor belt 22. The feeding conveyor belt 22 is arranged at the lower part of the discharge port of the vertical elevator 21. The lowermost part of the feeding conveyor belt 22 is provided with a roller 224 which can freely move on the feeding guide rail located in the feeding mechanism support 24. The feeding conveyor belt 22 is reversely rotated by the feeding conveyor belt motor 221. The traction chain 234 is connected with the handle in the feeding conveyor belt base 223, so as to achieve the effect of traction of the feeding conveyor belt 22. The traction chain 234 is arranged with a driving sprocket 232 and a driven sprocket 233 at both ends. The driving sprocket 232 and the driven sprocket 233 are respectively arranged with sprocket supports 235, and the driving sprocket 232 and the driven sprocket 233 are fixed by the sprocket supports 235. The shaft head on one side of the driving sprocket 232 is connected with the traction motor 231 through a shaft coupling. When the traction motor 231 in the feeding conveyor belt traction device 23 rotates, the driving sprocket 232 connected with the traction motor 231 rotates, and the driving sprocket 232 drives the driven sprocket 233 to rotate. At this time, the traction chain 234 moves, and the feeding conveyor belt 22 moves with the traction chain 234. When the traction motor 231 reverses, the rotation direction of the driving sprocket 232, the driven sprocket 233 and the traction chain 234 changes, and at this time the feeding conveyor belt 22 reverses.

[0051] The control system controls the vertical elevator 21 to start, and the matcha raw materials fed from the feeding port are lifted and conveyed to the feeding conveyor belt 22 which is stopped directly below the discharge port of the vertical elevator 21. The matcha raw materials are continuously accumulated in the feeding conveyor belt 22 until the vertical elevator 21 reaches the set feeding time, and the control system controls the vertical elevator 21 to stop moving. Then the control system controls the feeding conveyor belt motor 221 to start, and the feeding conveyor belt motor 221 rotates for 15s, so that the matcha raw materials on the feeding conveyor belt 22 fall into the first stem and leaf separation part 11 from the discharge hole of the feeding mechanism support 24. When the feeding conveyor belt motor 221 reaches the set movement time, the feeding conveyor belt motor 221 stops working. The control system controls the vertical elevator 21 to continue to work, and the matcha raw materials are fed into the feeding conveyor belt 22 again. When the vertical elevator 21 reaches the set feeding time, the control system controls the vertical elevator 21 to stop working. Then the control system controls the feeding conveyor belt motor 221 to reverse, and at this time the feeding conveyor belt 22 feeds the matcha raw materials from the discharge hole of the feeding mechanism support 24 into the third stem and leaf separation part 13 below. When the feeding conveyor belt motor 221 reaches the working time, the feeding conveyor belt motor 221 stops working.

[0052] The control system controls the vertical elevator 21 to work again to send the matcha raw material to the feeding conveyor 22. After the vertical elevator 21 reaches the set feeding time, the control system controls the vertical elevator 21 to stop working. Then the control system controls the traction motor 231 to rotate, and the feeding conveyor 22 moves accordingly. When the feeding conveyor 22 reaches the designated position, the control system controls the traction motor 231 to stop rotating. Then the control system controls the feeding conveyor motor 221 to rotate, and the feeding conveyor 22 sends the matcha raw material from the discharge hole in the feeding mechanism support 24 into the second stem and leaf separation unit 12. After the feeding conveyor motor 221 reaches the set working time, the control system controls the feeding conveyor motor 221 to stop rotating. Then the control system controls the vertical elevator 21 to continue working to send the matcha raw material to the feeding conveyor 22. After the vertical elevator 21 reaches the set feeding time, the control system controls the vertical elevator 21 to stop working. Then the control system controls the feeding conveyor motor 221 to reverse, and the feeding conveyor 22 sends the matcha raw material in the feeding conveyor 22 from the discharge hole in the feeding mechanism support 24 into the fourth stem and leaf separation unit 14 below. After the feeding conveyor motor 221 reaches the set working time, the control system controls the feeding conveyor motor 221 to stop reversing. Then the control system controls the traction motor 231 to reverse, and the feeding conveyor 22 moves in the reverse direction. When the feeding conveyor 22 reaches the initial position, the control system controls the traction motor 231 to stop reversing. At this time, there is matcha raw material to be separated in the four stem and leaf separation units, and then the stem and leaf separation process can be started.

[0053] Reference Figures 5-10 The parallel roller type stem and leaf separation unit 1 includes four separation drive motors 111, the power of the separation drive motor 111 is 90W, the model is 5IK90WRCF-5GU-30K, the rotating speed is 1350r / min, the reduction ratio is 45, and the final output rotating speed is 30r / min.

[0054] The four stem-leaf separating parts are of the same structure, and thus the first stem-leaf separating part 11 will be taken as an example to describe the structure and working process of the stem-leaf separating part. The uppermost part in the first stem-leaf separating part 11 is a separating driving motor 111, which is fixed on a separating driving motor support 112 below. The shaft head of the separating driving motor 111 is coaxially fixedly connected with the shaft head of a screen inner cylinder support 113 through a shaft coupling, and the other shaft head of the screen inner cylinder support 113 is coaxially fixedly connected with the shaft head of a bottom screen scraper 114 through a shaft coupling. The screen inner cylinder support 113 and a screen inner cylinder 115 are welded together, the separating driving motor 111 is fixed on a funnel 116 through a cross-shaped support, the upper edge of the funnel 116 and the roller support 15 are connected through a screw nut, the lower edge of the funnel 116 and the upper edge of a screen 117 are connected through a screw nut, and the funnel 116 and the screen 117 are located outside the screen inner cylinder 115. When the separating driving motor 111 rotates, the screen inner cylinder support 113 is driven to rotate, the bottom screen scraper 114 connected with the screen inner cylinder support 113 is also driven to rotate, and the screen inner cylinder 115 welded with the screen inner cylinder support 113 is also driven to rotate. The screen inner cylinder 115 has spiral blades distributed on the outer wall, the upper half of the blades plays a conveying role on the matcha raw materials in the funnel 116 in rotation, and the matcha raw materials are sent to the screen 117 below to prevent the matcha raw materials from being accumulated in the funnel 116. The lower half of the blades of the screen inner cylinder 115 scrapes the matcha raw materials to separate the leaves from the stems. Part of the stem-leaf mixture falls from the small holes in the outer wall of the screen 117 into the airflow-vibration composite separating unit 3 below, and the other part of the stem-leaf mixture falls along the inner wall of the screen 117 to the bottom screen 118 below. At this time, the bottom screen scraper 114 processes the stem-leaf mixture falling on the bottom screen 118. Under the scraping action of the bottom screen scraper 114, the stem-leaf mixture on the bottom screen 118 falls from the small holes in the bottom screen 118 into the airflow-vibration composite separating unit 3 below. The bottom screen rotating motor 1183 installed on the bottom screen support 1182 drives the bottom screen rotating shaft 1181 to rotate, so that the circular screen 1184 rotates around the bottom screen rotating shaft 1181 to be opened, and the stem-leaf mixture on the bottom screen 118 can be cleaned.

[0055] With reference to Figures 11-17, the separating sieve plate 321 in the airflow vibration composite separating unit 3 is located below the parallel roller type stem and leaf separating unit 1. The four corner lower parts of the separating sieve plate 321 are provided with spring sheet supports 324 for connecting and fixing the steel plate spring sheets 323. The upper end of the steel plate spring sheet 323 is connected with the spring sheet support 324 below the separating sieve plate 321, and the lower end of the steel plate spring sheet 323 is connected with the spring sheet support 324 above the support 326. Four height-adjustable supports 34 are connected below the four spring sheet supports 324 through the support 326. The height-adjustable support 34 is composed of a pressing plate 341, an outer frame 342, an adjusting screw 343 and a spring 344. When it is necessary to adjust the inclination angle of the separating sieve plate 321, only the adjusting screw 343 needs to be turned to make the adjusting screw 343 drive the pressing plate 341 to press the spring 344 downward, so as to change the height of the four corners of the separating sieve plate 321 from the ground and thus change the inclination angle of the separating sieve plate 321. The plane composed of the four height-adjustable supports 34 has a certain inclination angle with the x, y and z three axes in space, so the separating sieve plate 321 can have a certain inclination angle with the plane ZOX, the plane XOY and the plane ZOY in space, such as Figure 18The inclination angles are respectively α, β and γ, and the inclination angles are adjustable, wherein the adjustable range of α is 6-10°, the adjustable range of β is 8-16°, and the adjustable range of γ is 9-12°. The inclination angles can be adjusted according to the specific situation of the separated stems and leaves, which greatly improves the applicability of the machine. When the weight of the matcha raw material changes due to the change of water content or other factors, the inclination angle of the separation sieve plate 321 can be changed by adjusting the adjustable height support 34 to achieve better screening effect. A sieve plate support shaft 325 is installed below the separation sieve plate 321, and a connecting rod support 322 is installed on the sieve plate support shaft 325 to be hinged with one end of a connecting rod 313, and the other end of the connecting rod 313 is connected to a crank disc 312. The eccentricity of the crank disc 312 is 70 mm, the diameter of the crank disc 312 is 110 mm, and the length of the connecting rod 313 is 440 mm. The crank disc 312 is coaxially fixed with the motor shaft of a vibration motor 311, and the vibration motor 311 is installed on a vibration motor base 314. The vibration motor 311 in the vibration device 31 rotates to drive the crank disc 312 to rotate, and the crank disc 312 drives the connecting rod 313 to move, thereby driving the separation sieve plate 321 in the vibration separation device 32 to reciprocate. On the same side of the vibration motor 311, there is also arranged an airflow winnowing device 33, which includes a centrifugal fan 332 driven by a winnowing brake motor 331, and the centrifugal fan 332 is installed on a centrifugal fan base 333. Due to the reciprocating vibration of the separation sieve plate 321, the stem and leaf mixture on the separation sieve plate 321 will be thrown forward. The floating performance of leaves and stems is different, and under the combined action of the vibration of the separation sieve plate 321 and the centrifugal fan 332, the leaf and stem mixture is thrown up, and the lighter leaves fly farther, and the heavier stems fly closer to the centrifugal fan 332, so that they are separated in different areas of the separation sieve plate 321. Under the drive of the vibration motor 311, the separation sieve plate 321 reciprocates, the lighter leaves move away from the centrifugal fan 332 under the action of the separation sieve plate 321, and the heavier stems move towards the centrifugal fan 332 under the action of the separation sieve plate 321, so as to achieve the purpose of continuously jolting the separated objects, thereby realizing the separation and cleaning of leaves and stems.

[0056] The control system controls the power supply of the separation driving motor 111 to rotate, controls the power supply of the vibration motor 311 to start, and controls the start of the centrifugal fan 332, the first belt conveyor 41, and the second belt conveyor 42. Under the joint action of the spiral blade on the outer wall of the screen inner cylinder 115, the screen hole on the outer wall of the screen 117, the bottom screen scraper 114, and the bottom screen 118, the leaves are stripped from the stems, and the leaves and part of the stems fall into the lower separation sieve plate 321 through the circular hole. Then, under the joint action of the vibration of the separation sieve plate 321 and the airflow of the centrifugal fan 332, the leaves are discharged from one end of the separation sieve plate 321 and fall into the second belt conveyor 42 to be transported to the leaf collection area, and the stems are discharged from the other end of the separation sieve plate 321 and fall into the first belt conveyor 41 to be transported to the stem collection area. After the set separation and cleaning operation time is reached, the control system controls the power supply of the separation driving motor 111 to be cut off, the power supply of the vibration motor 311 to be cut off and stop, and the centrifugal fan 332, the first belt conveyor 41, and the second belt conveyor 42 to stop working, thereby completing the separation and cleaning of the tea leaves.

[0057] The control method of the parallel disc type tea leaf and stem separation machine group provided by the application is as follows:

[0058] S1: The control system controls the start of the vertical elevator 21, tea raw materials are fed into the vertical elevator 21 from the feeding port, and are lifted and conveyed to be discharged onto the feeding conveyor belt 22, and are continuously accumulated on the feeding conveyor belt 22 until the set working time of the vertical elevator 21 is reached, and then the control system controls the stop of the vertical elevator 21;

[0059] S2: The control system controls the stop of the vertical elevator 21, and controls the rotation of the feeding conveyor belt motor 221 to drive the forward and reverse conveyor belt 222 to rotate, so that the tea raw materials on the feeding conveyor belt 22 are sent into the first leaf and stem separation part 11 below, and then the control system controls the stop of the feeding conveyor belt motor 221 after the set working time of the feeding conveyor belt motor 221 is reached;

[0060] S3: The control system controls the vertical elevator 21 as in S1, and then the control system controls the reverse rotation of the feeding conveyor belt motor 221 to drive the forward and reverse conveyor belt 222 to reverse, so that the tea raw materials on the feeding conveyor belt 22 are sent into the third leaf and stem separation part 13 below, and then the control system controls the stop of the feeding conveyor belt motor 221 after the set working time of the feeding conveyor belt motor 221 is reached;

[0061] S4: repeat S1 control system control vertical elevator 21, then control system control traction motor 231 rotation, drive the main sprocket 232 rotation, and then drive the traction chain 234 installed on the movement, traction feeding conveyor belt 22 on the feeding guide rail movement, to reach the designated location, control system control traction motor 231 stop rotation, then control system control feeding conveyor belt motor 221 rotation, drive the positive and negative rotation of the conveyor belt 222 rotation, the feeding conveyor belt 22 on the matcha raw materials into the second stem and leaf separation part 12 below, to reach the feeding conveyor belt motor 221 set working time, control system control feeding conveyor belt motor 221 stop rotation.

[0062] S5: repeat S1 control system control vertical elevator 21, then control system control feeding conveyor belt motor 221 reverse rotation, drive the positive and negative rotation of the conveyor belt 222 reverse rotation, the feeding conveyor belt 22 on the matcha raw materials into the fourth stem and leaf separation part 14 below, to reach the feeding conveyor belt motor 221 set working time, control system control feeding conveyor belt motor 221 stop rotation, then control system control traction motor 231 reverse rotation, drive the main sprocket 232 reverse rotation, and then drive the traction chain 234 installed on the reverse movement, traction feeding conveyor belt 22 on the feeding guide rail reverse movement, to reach the initial position, control system control traction motor 231 stop rotation.

[0063] S6: control system control separation drive motor 111, so that the screen inner cylinder 115 rotation, in the screen inner cylinder 115 outer wall of the spiral blade, screen 117 outer wall of the small hole, the bottom screen scraper 114 and the bottom screen 118 under the joint action of the blade from the stem on the peel, part of the leaf stem from the screen 117 and the bottom screen 118 of the through hole fall into the separation screen plate 321 below; separation drive motor 111 to a certain working time, control system control bottom screen rotation motor 1183 rotation, open the circular screen 1184, so that the circular screen 1184 on the stem and leaf mixture falls to the separation screen plate 321 below, when the bottom screen rotation motor 1183 reaches the set working time, control system control bottom screen rotation motor 1183 reverse rotation, close the circular screen 1184, until the circular screen 1184 back to the initial position, control system control bottom screen rotation motor 1183 stop rotation;

[0064] S7: synchronously with S6, the control system controls the vibration motor 311 and the centrifugal fan 332 to start, and controls the first belt conveyor 41 and the second belt conveyor 42 to start, after the leaves and stems fall on the separation sieve plate 321, under the vibration action of the separation sieve plate 321 and the air flow generated by the centrifugal fan 332, the leaves and stems will be separated, and discharged from both sides of the separation sieve plate 321 respectively. The lighter leaves are discharged from one side under the combined action of the air flow and vibration, and fall on the second belt conveyor 42 to be conveyed to the leaf collection area, and the heavier stems are discharged from the other side under the combined action of the air flow and vibration, and fall on the first belt conveyor 41 to be conveyed to the stem collection area. After the set separation and cleaning time is reached, the control system controls the separation drive motor 111 and the vibration motor 311 to lose power and stop rotating, and the centrifugal fan 332, the first belt conveyor 41 and the second belt conveyor 42 stop working to complete the leaf and stem separation process of the tea raw material.

[0065] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical scope disclosed by the present application, and all of the above should be covered within the protection scope of the present application.

Claims

1. A parallel roller-type matcha stem and leaf separator unit, characterized by, The application relates to a tea material processing device, which comprises a weighing feeding unit for quantitatively transporting tea materials, a parallel roller type stem-leaf separation unit arranged at the discharge port of the weighing feeding unit and used for crushing the tea materials, an airflow-vibration composite separation unit installed at the discharge port of the parallel roller type stem-leaf separation unit and used for separating stem stems and leaf blades formed after the tea materials are crushed, and a separation conveying unit arranged at the discharge port of the airflow-vibration composite separation unit and used for separately transporting the separated stem stems and leaf blades.

2. The parallel roller type matcha stem and leaf separating machine set according to claim 1, characterized by, The inlet of the screen is coaxially fixed with a funnel with a large upper part and a small lower part, and the inner cylinder surface of the funnel and the screen are matched to form a smooth transition and a tapered surface with a large upper part and a small lower part.

3. The parallel roller type tea leaf and stem separating machine set according to claim 2, characterized in that, One side of the circular screen is fixedly connected with a bottom screen rotating shaft, the bottom of the screen is fixedly connected with two bottom screen support frames, both shaft ends of the bottom screen rotating shaft are coaxially hinged in the corresponding bottom screen support frames, one shaft end of the bottom screen rotating shaft penetrates through the corresponding bottom screen support frame and is fixedly connected with a bottom screen rotating motor, and the bottom screen rotating motor provides overturning power for the circular screen.

4. The parallel roller type tea leaf and stem separating machine unit according to claim 3, characterized in that, The weighing feeding unit comprises a vertical elevator capable of lifting the matcha raw material to a set height, and a feeding conveyor belt arranged below a discharge port of the vertical elevator to receive the matcha raw material. The feeding conveyor belt is slidingly installed on a feeding mechanism support, so that a discharge end of the feeding conveyor belt moves between the material inlets of the respective stem-leaf separation units to provide the matcha raw material to the respective stem-leaf separation units.

5. The parallel roller tea leaf and stem separating machine unit according to claim 4, wherein, The separation and conveying unit comprises a second belt conveyor for receiving the leaves blown down by the centrifugal fan, and a first belt conveyor for receiving the stems swept down from the separation screen.

6. A control method for a parallel roller-type matcha stem and leaf separating machine according to claim 5, characterized in that, The method comprises the following steps: Step one: the control system controls the vertical elevator to start, and the matcha raw material is fed into the vertical elevator from a feeding port of the vertical elevator; the vertical elevator lifts the matcha raw material to a set height, and the matcha raw material falls from a discharge port of the vertical elevator to the feeding conveyor belt below, and is continuously accumulated on the feeding conveyor belt until the vertical elevator reaches a set working time, and then the control system controls the vertical elevator to stop working; Step two: the control system controls the feeding conveyor belt to rotate, so that the matcha raw material on the feeding conveyor belt falls into the first stem-leaf separation unit below the feeding conveyor belt; and after the feeding conveyor belt reaches a set working time, the control system controls the feeding conveyor belt to stop working; Step three: the feeding conveyor belt is fed in the manner of step one, and then the control system controls the feeding conveyor belt to move to the second stem-leaf separation unit, the third stem-leaf separation unit and the fourth stem-leaf separation unit respectively after completing the feeding, and the matcha raw material is respectively put into the second stem-leaf separation unit, the third stem-leaf separation unit and the fourth stem-leaf separation unit in the manner of step two; each time the feeding conveyor belt completes the feeding, it returns to the initial position, i.e. the position above the first stem-leaf separation unit; Step four: the control system controls the screen inner cylinder to rotate to roll and crush the matcha raw material in the screen; and then the bottom screen is opened to pour the rolled and crushed matcha raw material on the separation screen; Step five: the control system controls the vibration motor and the centrifugal fan to be opened, and the matcha raw material is flipped under the reciprocating swing action of the separation screen, the lighter leaves are blown off by the centrifugal fan to the second belt conveyor and are conveyed away by the second belt conveyor, and the heavier stems slide from the separation screen to the first belt conveyor and are conveyed away by the first belt conveyor.

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