Screening device for tea production

Abstract

The utility model relates to the technical field of tea production, in particular to a screening device for tea production. A screening device for tea production comprises a supporting frame, a supporting frame, a discharging hopper, a screen, a fixing block and the like, the supporting frame is placed on the ground, the top of the supporting frame is fixedly connected with the supporting frame, a discharging channel is formed in the left portion of the supporting frame, the top of the supporting frame is connected and communicated with the discharging hopper, and a plurality of sliding grooves are formed in the two sides of the supporting frame in a linear array mode. A plurality of fixing blocks are fixedly connected to the two sides of the supporting frame in a linear array mode, a stand column is arranged on each fixing block in a sliding mode, a connecting block sliding in the corresponding sliding groove is fixedly arranged at the bottom of each stand column, and a screen is fixedly connected between every two connecting blocks. Tea leaves in the blanking hopper are blocked by the circular plate, so that the tea leaves can only quantitatively fall into the screen from the through groove, the amount of the tea leaves entering the screen every time is accurately controlled, and excessive tea leaves are prevented from flowing into the screen at a time.

Description

Technical Field

[0001] This utility model relates to the field of tea production technology, and in particular to a screening device for tea production. Background Technology

[0002] Tea leaves, commonly known as tea, generally include the leaves and buds of the tea plant. Other names include cha, jia, ming, and chuan. Tea contains catechins, cholesterol, caffeine, inositol, folic acid, and pantothenic acid, all of which are beneficial to health. Tea beverages are one of the world's three major beverages.

[0003] In tea production, the screening process is a crucial step, primarily aimed at ensuring the quality and consistency of the tea. Current screening methods categorize tea leaves according to physical characteristics such as size, shape, and length, thus distinguishing different grades. However, when the quantity of tea leaves is too large, the sieve mesh can easily become clogged with tea fragments, fine tea dust, and other impurities, preventing the tea leaves from passing through smoothly and being effectively sorted. This not only increases the screening time but may also result in some tea leaves not being fully screened, leading to the inclusion of substandard tea leaves or impurities, affecting the consistency and purity of the finished tea product.

[0004] Therefore, it is necessary to design a screening device for tea production to solve the above-mentioned technical problems. Utility Model Content

[0005] In order to overcome the shortcomings of the sieve holes being easily blocked when the amount of tea is too large, resulting in poor sorting, increased screening time, and affecting the quality and purity of the finished product, the technical problem of this utility model is to provide a screening device for tea production.

[0006] A sieving device for tea production includes a support frame, a support box, a hopper, a screen, and fixed blocks. The support frame is placed on the ground, and the support box is fixedly connected to the top of the support frame. A feeding channel is provided on the left side of the support box, and the hopper is connected and communicated with the top of the support box. Multiple sliding grooves are arranged in a linear array on both sides of the support box, and multiple fixed blocks are fixedly connected to the linear array on both sides of the support box. Each fixed block has a column that slides on it, and a connecting block that slides in the corresponding sliding groove is fixedly attached to the bottom of each column. A screen is fixedly connected between each connecting block. The device also includes a first motor, a stirring rod, a circular plate, and a scraper. The first motor is fixedly connected to one side of the bottom of the support box, and a stirring rod is fixedly connected to the output shaft of the first motor. The stirring rod has more than one stirring blade fixedly attached vertically. A circular plate is fixedly connected to the bottom of the hopper, and multiple through grooves are arranged in a circular array on the circular plate. A scraper is fixedly connected to the middle of the stirring rod.

[0007] Optionally, multiple baffles are fixedly provided on both sides of the top of the screen.

[0008] Optionally, it also includes a protective door and a first handle, with the protective door rotatably connected to the right side of the support frame and the first handle fixedly connected to the right side of the protective door.

[0009] Optionally, it also includes a first collection frame, a second collection frame, and a second handle. The first collection frame is placed on the front left side of the support frame below the feeding channel, and the second collection frame is placed on the support frame below the screen. The second handle is fixedly connected to the right side of the second collection frame.

[0010] Optionally, it also includes bevel gears, cams, and return springs. Bevel gears are connected to the bottom of the support frame and the lower part of the stirring rod. Two bevel gears mesh with each other, and one bevel gear is rotatably connected to the support frame, while the other bevel gear is fixedly connected to the stirring rod. A cam that abuts against the screen is fixedly connected to one end of the bevel gear located on the left. A return spring is connected between the second connecting block on both sides of the screen and the corresponding fixed block.

[0011] Optionally, it also includes a brush, a rotating shaft, a gear, a rack, a second motor, a screw, and a slider. The rotating shaft is rotatably and slidably connected inside the support frame. A brush that contacts and engages with the bottom surface of the screen is fixedly connected to the rotating shaft. A rack is fixedly connected to the front of the support frame. A gear that meshes with the rack is fixedly connected to one end of the rotating shaft. A second motor is fixedly connected to the rear of the support frame. A screw that is rotatably connected to the support frame is fixedly connected to the output shaft of the second motor. A slider that is rotatably connected to one end of the rotating shaft is threaded onto the screw.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model uses a circular plate to block the tea leaves in the hopper, ensuring that the tea leaves can only fall into the screen in a quantitative manner from the trough, accurately controlling the amount of tea leaves entering the screen each time, avoiding excessive tea leaves from flooding into the screen at once, reducing the risk of screen blockage, and then driving the stirring rod to rotate through the output shaft of the first motor, the stirring blades on the stirring rod can effectively stir the tea leaves in the hopper, preventing the tea leaves from accumulating or blocking the trough and ensuring the smooth flow of tea leaves.

[0013] 2. This utility model uses bevel gear transmission to make the cam rotate and contact the screen, pushing the screen upward. Then, under the action of the return spring, the screen moves downward. The up and down shaking of the screen ensures that the tea leaves are evenly distributed on the screen, avoiding local accumulation or blockage, and improving the screening efficiency.

[0014] 3. This utility model starts a second motor, whose output shaft drives a screw to move a slider. The gear moves and rotates along the rack, and the brush can rotate both clockwise and counterclockwise in the reciprocating motion, ensuring that fine tea leaves in all directions on the bottom surface of the screen can be thoroughly removed, thus improving cleaning efficiency. Attached Figure Description

[0015] Figure 1This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a partial sectional view of the support frame, support frame, and protective door components of this utility model.

[0017] Figure 3 This is a partial sectional view of the screen, fixing block, and return spring components of this utility model.

[0018] Figure 4 This is a partial sectional view of the support frame, fixing block, and return spring of this utility model.

[0019] Figure 5 This is a diagram showing the covering structure of the bevel gear, cam, and circular plate components of this utility model.

[0020] The markings in the attached diagram are as follows: 1: support frame, 2: support frame, 3: protective door, 4: first handle, 5: hopper, 6: first motor, 7: stirring rod, 8: bevel gear, 9: cam, 10: screen, 11: fixing block, 12: return spring, 13: first collection frame, 14: second collection frame, 15: second handle, 16: brush, 17: rotating shaft, 18: gear, 19: rack, 20: second motor, 21: screw, 22: slider, 23: circular plate, 24: scraper. Detailed Implementation

[0021] The present invention will be further described below with reference to specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0022] Example: A screening device for tea production, such as... Figures 1-5As shown, the device includes a support frame 1, a support frame 2, a hopper 5, a screen 10, a fixing block 11, a first motor 6, a stirring rod 7, a circular plate 23, and a scraper 24. The support frame 1 is placed on the ground. The top of the support frame 1 is screwed to the inclined support frame 2. The left side of the support frame 2 has a discharge channel that is higher at the back and lower at the front. The top right side of the support frame 2 is connected to and communicates with the funnel-shaped hopper 5. Three sliding grooves are arranged in a linear array on the front and rear sides of the support frame 2. Three sliding grooves are welded to the linear array on both the front and rear sides of the support frame 2. Each fixed block 11 has a sliding column, and each column has a connecting block fixed at its bottom that slides along a corresponding groove. A screen 10 is welded between each connecting block and located inside the support frame 2. Three baffles are fixed on the front and rear sides of the top of the screen 10 to prevent tea leaves from flowing out of the groove. When tea leaves are poured into the hopper 5, they fall onto the inclined screen 10, which sieves the tea leaves. The finer tea leaves fall through the holes below the screen 10. Because the screen 10 is inclined, the finer tea leaves fall from the inclined holes. The tea leaves slide from the higher side (right) to the lower side (left), while the coarser tea leaves slide out from the left-side feeding channel, thus achieving effective sieving of the tea leaves. A first motor 6 is installed on the bottom right side of the support frame 2 via screws. A stirring rod 7, penetrating the interior of the support frame 2 and the feeding hopper 5, is welded to the output shaft of the first motor 6. The portion of the stirring rod 7 extending into the feeding hopper 5 has more than one stirring blade fixedly arranged vertically. A circular plate 23 is welded to the bottom of the feeding hopper 5, and four through slots are arranged in a circular array on the circular plate 23. The stirring rod 7... A scraper 24, which abuts against the top surface of the circular plate 23, is installed in the middle by screws. When the first motor 6 is started, its output shaft drives the stirring rod 7 to rotate. The tea leaves in the hopper 5 are blocked by the circular plate 23, ensuring that the tea leaves can only fall into the screen 10 in a quantitative manner from the channel. The amount of tea leaves entering the screen 10 each time is controlled. The stirring blades on the stirring rod 7 agitate the tea leaves in the hopper 5 to prevent the tea leaves from accumulating or blocking the channel. At the same time, the scraper 24 rotates with the stirring rod 7 to push away the tea leaves blocking the channel of the circular plate 23, ensuring that the feeding process is smooth and accurate.

[0023] like Figure 1 and Figure 2 As shown, it also includes a protective door 3 and a first handle 4. The protective door 3 is rotatably connected to the right side of the support frame 2. The first handle 4 is welded to the rear of the right side of the protective door 3. Pulling the first handle 4 will rotate the protective door 3 clockwise to open it, allowing the staff to inspect the inside of the support frame 2. After the inspection is completed, pushing the first handle 4 will rotate the protective door 3 counterclockwise to close it and ensure that it is locked in place.

[0024] like Figure 1 and Figure 2As shown, it also includes a first collection frame 13, a second collection frame 14, and a second handle 15. The first collection frame 13 is placed on the front left side of the support frame 1, located below the feeding channel. The second collection frame 14 is placed on the support frame 1, located directly below the screen 10. The second handle 15 is welded to the right side of the second collection frame 14. During the tea sieving process, the fine tea leaves falling from the bottom of the screen 10 fall into the second collection frame 14, while the coarse tea leaves sliding out from the feeding channel fall into the first collection frame 13. When the first collection frame 13 is full of coarse tea leaves, it is pulled forward to clean it. After cleaning, the first collection frame 13 is pushed back to its original position. When the second collection frame 14 is full of fine tea leaves, the second handle 15 is pulled to the right to clean it. After cleaning, the second collection frame 14 is pushed back to its original position.

[0025] like Figure 1 , Figure 2 and Figure 5 As shown, it also includes a bevel gear 8, a cam 9, and a return spring 12. Bevel gears 8 are connected to the bottom right side of the support frame 2 and the lower part of the stirring rod 7. The two bevel gears 8 mesh with each other, with one bevel gear 8 rotatably connected to the support frame 2 and the other bevel gear 8 welded to the stirring rod 7. A cam 9, which abuts against the screen 10, is welded to the left end of the bevel gear 8 on the left side. A return spring 12 is connected between the second connecting block on the front and rear sides of the screen 10 and the corresponding fixing block 11. When the stirring rod 7 rotates, the two... Driven by the bevel gear 8, the cam 9 rotates synchronously. In one complete rotation cycle, when the cam 9 rotates from 90 degrees to half its stroke (270 degrees), it contacts the screen 10 and pushes the screen 10 upwards. The connecting block moves upwards along the slide groove. At this time, the return spring 12 is compressed and deformed. When the cam 9 continues to rotate, returning from half its stroke (270 degrees) to 90 degrees, the protrusion disengages from the screen 10. The screen 10 and the connecting block move downwards along the slide groove to their original positions under the reset action of the return spring 12. This process repeats, achieving the up-and-down shaking of the screen 10 to improve the tea sieving efficiency.

[0026] like Figure 1 , Figure 3 and Figure 4As shown, it also includes a brush 16, a rotating shaft 17, a gear 18, a rack 19, a second motor 20, a screw 21, and a slider 22. The rotating shaft 17, located below the screen 10, is rotatably and slidably connected inside the support frame 2. A brush 16, which contacts and engages with the bottom surface of the screen 10, is welded to the rotating shaft 17. A rack 19 is welded to the lower front side of the support frame 2. A gear 18, meshing with the rack 19, is welded to the front end of the rotating shaft 17. The second motor 20 is mounted on the right rear side of the support frame 2 via screws. A screw 21, rotatably connected to the support frame 2, is connected to the output shaft of the second motor 20 via a coupling. A slider 22, rotatably connected to the rear end of the rotating shaft 17, is threaded onto the screw 21. When the second motor 20 is started, its output shaft drives the screw 21 clockwise. The needle rotates, causing the slider 22 to slide to the right along the guide rail, which in turn drives the rotating shaft 17 connected to the slider 22 to move to the right. Since the rack 19 meshes with the gear 18, the rotation of the gear 18 drives the rotating shaft 17 to rotate clockwise. At this time, the brush 16 moves to the right and rotates clockwise, brushing away the fine tea leaves adsorbed on the bottom surface of the screen 10. When the slider 22 moves to the end, the output shaft of the second motor 20 changes direction, driving the screw 21 to rotate counterclockwise, causing the slider 22 to slide to the left along the guide rail, which in turn drives the rotating shaft 17 to move to the left. As the slider 22 moves to the left, the gear 18 rotates, driving the rotating shaft 17 to rotate counterclockwise. At this time, the brush 16 moves to the left and rotates counterclockwise, continuing to clean the bottom surface of the screen 10. This process is repeated to achieve a thorough cleaning of the bottom surface of the screen 10.

[0027] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A sieving device for tea production, comprising a support frame (1), a support frame (2), a hopper (5), a screen (10), and fixed blocks (11), wherein the support frame (1) is placed on the ground, the top of the support frame (1) is fixedly connected to the support frame (2), the left side of the support frame (2) is provided with a feeding channel, the top of the support frame (2) is connected to and communicates with the hopper (5), multiple sliding grooves are arranged in a linear array on both sides of the support frame (2), multiple fixed blocks (11) are fixedly connected in a linear array on both sides of the support frame (2), each fixed block (11) is provided with a column in a sliding manner, each column is fixedly provided with a connecting block that slides in the corresponding sliding groove at its bottom, and a screen (10) is fixedly connected between each connecting block, characterized in that: It also includes a first motor (6), a stirring rod (7), a circular plate (23) and a scraper (24). The first motor (6) is fixedly connected to one side of the bottom of the support frame (2). The stirring rod (7) is fixedly connected to the output shaft of the first motor (6). The stirring rod (7) has more than one stirring blade fixedly arranged vertically. The bottom of the hopper (5) is fixedly connected to the circular plate (23). Multiple through slots are arranged in a ring array on the circular plate (23). The middle part of the stirring rod (7) is fixedly connected to the scraper (24).

2. The screening device for tea production according to claim 1, characterized in that: Multiple baffles are fixed on both sides of the top of the screen (10).

3. A sieving device for tea production according to claim 2, characterized in that: It also includes a protective door (3) and a first handle (4). The right side of the support frame (2) is rotatably connected to the protective door (3), and the right side of the protective door (3) is fixedly connected to the first handle (4).

4. A sieving device for tea production according to claim 3, characterized in that: It also includes a first collection frame (13), a second collection frame (14) and a second handle (15). The first collection frame (13) is placed on the left side of the front part of the support frame (1) below the feeding channel. The second collection frame (14) is placed on the support frame (1) below the screen (10). The second handle (15) is fixedly connected to the right side of the second collection frame (14).

5. A sieving device for tea production according to claim 4, characterized in that: It also includes a bevel gear (8), a cam (9) and a return spring (12). The bottom of the support frame (2) and the lower part of the stirring rod (7) are both connected to bevel gears (8). The two bevel gears (8) mesh with each other, and one bevel gear (8) is rotatably connected to the support frame (2), while the other bevel gear (8) is fixedly connected to the stirring rod (7). A cam (9) that abuts against the screen (10) is fixedly connected to one end of the bevel gear (8) located on the left. A return spring (12) is connected between the second connecting block on both sides of the screen (10) and the corresponding fixed block (11).

6. A screening device for tea production according to claim 5, characterized in that: It also includes a brush (16), a rotating shaft (17), a gear (18), a rack (19), a second motor (20), a screw (21), and a slider (22). The rotating shaft (17) is rotatably and slidably connected inside the support frame (2). A brush (16) that contacts and engages with the bottom surface of the screen (10) is fixedly connected to the rotating shaft (17). A rack (19) is fixedly connected to the front of the support frame (2). A gear (18) that meshes with the rack (19) is fixedly connected to one end of the rotating shaft (17). A second motor (20) is fixedly connected to the rear of the support frame (2). A screw (21) that is rotatably connected to the support frame (2) is fixedly connected to the output shaft of the second motor (20). A slider (22) that is rotatably connected to one end of the rotating shaft (17) is threadedly connected to the screw (21).

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