Sieving and impurity removing device for tea production

Abstract

The utility model relates to a sieving and impurity removing device for tea production, and belongs to the technical field of tea production equipment. Through cooperation of the vibrating screening mechanism and the impurity removing mechanism, double removal of particle impurities and filiform foreign matter in tea leaves is achieved, a vibrating screen conducts flexible carding on a tea leaf layer through a deflector rod on a brush plate in the reciprocating swinging process, light long fiber impurities such as woven belt filaments, hemp threads and hair can be directionally hooked and separated, and the tea leaf layer is cleaned and separated. The impurity removal effect is improved; meanwhile, a turnover brush plate is arranged, an embedded structure of a cleaning plate and the brush plate is adopted, a second electric push rod drives the cleaning plate to move in the axial direction of a second guide rod, a cleaning plate through hole and a brush plate shifting rod generate a shearing effect, filamentous impurities are removed, and the limitation that a traditional brush roller needs to be disassembled, assembled and cleaned in a shutdown mode is overcome; and the working efficiency is obviously improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of tea production equipment, specifically relating to a sieving and impurity removal device for tea production. Background Technology

[0002] Tea is one of China's traditional beverages, rich in nutritional value and cultural significance. Because tea leaves can become contaminated with fibrous impurities such as woven fibers, hemp fibers, and hair during various stages of processing, including picking, initial processing, transportation, and storage, these impurities must be removed during the refining process.

[0003] Currently, tea leaves are generally screened and cleaned using both manual and mechanical methods. Compared to mechanical screening, manual screening is less efficient. Most existing tea cleaning devices only separate fine impurities through vibration screening, making it difficult to remove fibrous impurities such as woven ribbons, hemp fibers, and hair. The cleaning effect is not ideal, which affects the quality of the tea. Although some devices use brush rollers to remove fibrous impurities, operators need to manually replace and clean the impurities on the brush rollers, which is cumbersome and reduces production efficiency. Utility Model Content

[0004] To overcome the limitations of existing tea impurity removal devices, most of which rely solely on vibrating sieving to separate fine impurities, making it difficult to remove fibrous impurities such as woven ribbon fibers, hemp fibers, and hair, resulting in unsatisfactory impurity removal and affecting tea quality, this invention provides a sieving and impurity removal device for tea production. Through the coordinated operation of a vibrating sieving mechanism and an impurity removal mechanism, it achieves efficient removal of tea impurities. The vibrating screen effectively removes both particulate impurities and filamentous foreign matter. During its reciprocating oscillation, the brush plate's levers flexibly comb the tea leaves, selectively picking up and separating lightweight long-fiber impurities such as woven ribbon fibers, hemp fibers, and hair, thus improving the impurity removal effect. Simultaneously, a flip-type brush plate with an interlocking structure of cleaning plate and brush plate is incorporated. A second electric push rod drives the cleaning plate axially along the second guide rod, causing a shearing action between the cleaning plate's through-holes and the brush plate levers, thereby removing filamentous impurities. This overcomes the limitations of traditional brush rollers, which require machine shutdown for disassembly and cleaning, significantly improving work efficiency.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: A sieving and impurity removal device for tea production mainly includes a frame, a sieving mechanism, an impurity removal mechanism, and a drive mechanism. The frame is equipped with a sieving mechanism capable of reciprocating vibration. The impurity removal mechanism is mounted on the frame, located directly above the sieving mechanism. A drive mechanism for rotating the impurity removal mechanism is mounted on the frame. The drive mechanism includes a first electric push rod, a support base, a gear, a rack, and a first guide rod. The impurity removal mechanism includes a brush plate, a cleaning plate, a second guide rod, a second electric push rod, a connecting shaft, and a lever. The machine consists of a brush plate with support seats on both sides of the frame. A connecting shaft is located at the end of the brush plate, and the connecting shaft is mounted on the support seats via bearings. A gear is installed at the end of the connecting shaft, and a first guide rod is located at the end of the rack. The rack is slidably mounted on the support seats via the first guide rod and meshes with the gear. A first electric push rod is mounted on the frame, and its piston rod is connected to the first guide rod. Through holes are evenly distributed on the cleaning plate. Two second guide rods penetrating the brush plate are located on the top surface of the cleaning plate, allowing the cleaning plate to slide on the brush plate via the second guide rods. Dial rods penetrating the through holes are evenly distributed on the bottom surface of the brush plate. A second electric push rod for driving the vertical movement of the cleaning plate is installed at the top of the brush plate.

[0006] The screening mechanism includes a vibrating screen, swing blocks, a collection trough, a rotating shaft, a turntable, a connecting column, and a connecting rod. Four swing blocks are hinged to the frame. The vibrating screen is hinged to the top of the swing blocks. The rotating shaft is mounted on the frame through a bearing seat and is connected to a motor mounted at the bottom of the frame via a belt drive mechanism. The turntable is mounted at the end of the rotating shaft, and a connecting column offset from the center is provided on its end face. The bottom end of the connecting rod is hinged to the connecting column, and the top end is hinged to the side wall of the vibrating screen. A collection trough for collecting impurities is installed at the bottom of the vibrating screen.

[0007] The frame is equipped with a collection trough for collecting filamentous debris. The collection trough is located directly above the vibrating screen, and L-shaped connecting blocks that are slidably connected to the frame are provided at both ends of the collection trough.

[0008] The vibrating screen and the material collection trough are provided with discharge ports at their ends that discharge material in different directions.

[0009] The beneficial effects of this utility model are:

[0010] This invention achieves dual removal of particulate impurities and filamentous foreign matter from tea leaves through the coordinated operation of a vibrating screening mechanism and a cleaning mechanism. During the reciprocating oscillation of the vibrating screen, the brush plate's levers flexibly comb the tea layer, selectively picking up and separating lightweight long-fiber impurities such as woven ribbons, hemp fibers, and hair, thus improving the cleaning effect. Simultaneously, a flip-type brush plate is set up, and a fitting structure between the cleaning plate and the brush plate is adopted. The cleaning plate is driven to move axially along the second guide rod by a second electric push rod, causing the through holes of the cleaning plate to generate a shearing action with the brush plate levers, thereby removing filamentous impurities. This solves the limitation of traditional brush rollers requiring machine shutdown for disassembly and cleaning, significantly improving work efficiency. Attached Figure Description

[0011] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0012] Figure 2 This is the isometric drawing of this utility model.

[0013] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0014] Figure 4 yes Figure 2 A magnified view of a section at point B.

[0015] Figure 5 This is a cross-sectional view of the present invention.

[0016] Figure 6 yes Figure 5 A magnified view of a section at point C. Detailed Implementation

[0017] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0018] This utility model discloses a sieving and impurity removal device for tea production. The device mainly includes a frame 1, a sieving mechanism 2, an impurity removal mechanism 3, and a drive mechanism 4. The sieving mechanism 2, capable of reciprocating vibration, is mounted on the frame 1. The impurity removal mechanism 3 is mounted on the frame 1, located directly above the sieving mechanism 2. The sieving mechanism 2 includes a vibrating screen 201, swing blocks 202, a collection trough 203, a rotating shaft 204, a turntable 205, a connecting column 206, and a connecting rod 207. Four swing blocks 202 are hinged to the frame 1. 02. The vibrating screen 201 is hinged to the top of the swing block 202. The rotating shaft 204 is mounted on the frame 1 through a bearing seat. The rotating shaft 204 is connected to the motor mounted at the bottom of the frame 1 via a belt drive mechanism. The turntable 205 is mounted on the end of the rotating shaft 204, and an off-center connecting column 206 is provided on its end face. The bottom end of the connecting rod 207 is hinged to the connecting column 206, and the top end is hinged to the side wall of the vibrating screen 201. A collection trough 203 for collecting impurities is installed at the bottom of the vibrating screen 201. A drive motor for rotating the impurity removal mechanism 3 is installed on the frame 1. Structure 4, the drive mechanism 4 includes a first electric push rod 401, a support base 402, a gear 403, a rack 404, and a first guide rod 405. The impurity removal mechanism 3 includes a brush plate 301, a cleaning plate 302, a second guide rod 303, a second electric push rod 304, a connecting shaft 305, and a lever 306. Support bases 402 are installed on both sides of the frame 1. A connecting shaft 305 is provided at the end of the brush plate 301. The connecting shaft 305 is mounted on the support base 402 through bearings. A gear 403 is installed at the end of the connecting shaft 305, and a lever 406 is provided at the end of the rack 404. A first guide rod 405 is slidably mounted on a support base 402 via a rack 404, which meshes with a gear 403. A first electric push rod 401 is mounted on the frame 1, and its piston rod is connected to the first guide rod 405. The cleaning plate 302 has evenly distributed through holes. Two second guide rods 303 penetrating the brush plate 301 are provided on the top surface of the cleaning plate 302. The cleaning plate 302 is slidably mounted on the brush plate 301 via the second guide rods 303. A lever 306 penetrating the through holes of the cleaning plate 302 is evenly distributed on the bottom surface of the brush plate 301. A second electric push rod 304 for driving the cleaning plate 302 to move vertically is installed at the top of the brush plate 301.

[0019] The motor is started, and the motor drives the rotating shaft 204 to rotate through the belt drive mechanism, which in turn drives the turntable 205 to rotate. Since the connecting column 206 on the end face of the turntable 205 is off-center, the vibrating screen 201 is driven to reciprocate under the hinge support of the swing block 202 through the connecting rod 207 during rotation. The tea raw material is fed into the feed end of the vibrating screen 201. Under the action of vibration, fine particles of impurities fall into the bottom collection trough 203 through the screen, while the tea and the filamentous impurities that have not been screened are conveyed forward to the area below the brush plate 301 with the vibration. During the screening process, the elastic lever 306 on the bottom surface of the brush plate 301 is inserted into the tea layer with the swing of the vibrating screen 201. The tea is combed by the flexible lever, and the light long fibers such as woven ribbon and hemp fibers are wrapped and hooked onto the lever 306. The separated tea continues to move along the surface of the vibrating screen 201 to the discharge end, and the impurities fall into the collection trough 203 through the screen holes. When the amount of impurities attached to the lever 306 reaches a certain level, the first electric push rod 401 pushes the first guide rod 405 to move horizontally, driving the rack 404 and gear 403 to mesh and transmit power. This causes the connecting shaft 305 to drive the brush plate 301 to rotate around the support base 402 to a vertical position. Then, the second electric push rod 304 is activated, pushing the cleaning plate 302 to move along the second guide rod 303. At this time, the through hole of the cleaning plate 302 and the lever 306 generate relative shearing motion, peeling off the filamentous impurities wrapped on the lever 306 and causing them to fall into the collection trough 203. After cleaning is completed, the first electric push rod 401 retracts, causing the brush plate 301 to reset, and the second electric push rod 304 retracts, causing the cleaning plate 302 to reset, ensuring that the brush plate 301 continues to work in the next cycle.

[0020] The frame 1 is equipped with a collection trough 5 for collecting filamentous debris. The collection trough 5 is located directly above the vibrating screen 201. L-shaped connecting blocks 501 that are slidably connected to the frame 1 are provided at both ends of the collection trough 5. When the brush plate 301 is rotated to a vertical position, the operator manually slides the collection trough 5 directly below the lever 306 to collect the impurities.

[0021] The vibrating screen 201 and the collecting trough 203 are provided with discharge ports at their ends that discharge material in different directions; this prevents impurities from being mixed back into the tea due to vibration and ensures the cleanliness of the finished tea.

[0022] Work process:

[0023] The motor is started, and the motor drives the rotating shaft 204 to rotate through the belt drive mechanism, which in turn drives the turntable 205 to rotate. Since the connecting column 206 on the end face of the turntable 205 is off-center, the vibrating screen 201 is driven to reciprocate under the hinge support of the swing block 202 through the connecting rod 207 during rotation. The tea raw material is fed into the feed end of the vibrating screen 201. Under the action of vibration, fine particles of impurities fall into the bottom collection trough 203 through the screen, while the tea and the filamentous impurities that have not been screened are conveyed forward to the area below the brush plate 301 with the vibration. During the screening process, the elastic lever 306 on the bottom surface of the brush plate 301 is inserted into the tea layer with the swing of the vibrating screen 201. The tea is combed by the flexible lever, and the light long fibers such as woven ribbon and hemp fibers are wrapped and hooked onto the lever 306. The separated tea continues to move along the surface of the vibrating screen 201 to the discharge end, and the impurities fall into the collection trough 203 through the screen holes. When the amount of impurities attached to the lever 306 reaches a certain level, the first electric push rod 401 pushes the first guide rod 405 to move horizontally, driving the rack 404 and gear 403 to mesh and transmit power. This causes the connecting shaft 305 to drive the brush plate 301 to rotate around the support base 402 to a vertical position. Then, the second electric push rod 304 is activated, pushing the cleaning plate 302 to move along the second guide rod 303. At this time, the through hole of the cleaning plate 302 and the lever 306 generate relative shearing motion, peeling off the filamentous impurities wrapped on the lever 306 and causing them to fall into the collection trough 203. After cleaning is completed, the first electric push rod 401 retracts, causing the brush plate 301 to reset, and the second electric push rod 304 retracts, causing the cleaning plate 302 to reset, ensuring that the brush plate 301 continues to work in the next cycle.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of this utility model.

Claims

1. A sieving and impurity removal device for tea production, characterized in that: The aforementioned tea production sieving and impurity removal device includes a frame (1), a sieving mechanism (2), an impurity removal mechanism (3), and a drive mechanism (4). The frame (1) is equipped with a reciprocating vibrating sieving mechanism (2). The impurity removal mechanism (3) is mounted on the frame (1) and located directly above the sieving mechanism (2). The frame (1) is equipped with a drive mechanism (4) for rotating the impurity removal mechanism (3). The drive mechanism (4) includes a first electric push rod (401), a support base (402), a gear (403), a rack (404), and a first guide rod (405). The impurity removal mechanism (3) includes a brush plate (301), a cleaning plate (302), a second guide rod (303), a second electric push rod (304), a connecting shaft (305), and a lever (306). Support bases (402) are mounted on both sides of the frame (1). A connecting shaft (305) is provided at the end of the brush plate (301). The bearing is mounted on the support base (402). A gear (403) is installed at the end of the connecting shaft (305). A first guide rod (405) is provided at the end of the rack (404). The rack (404) is slidably mounted on the support base (402) through the first guide rod (405) and meshes with the gear (403). A first electric push rod (401) is mounted on the frame (1). Its piston rod is connected to the first guide rod (405). Through holes are evenly provided on the cleaning plate (302). Two second guide rods (303) penetrating the brush plate (301) are provided on the top surface of the cleaning plate (302). The cleaning plate (302) is slidably mounted on the brush plate (301) through the second guide rods (303). A lever (306) penetrating the through hole of the cleaning plate (302) is evenly provided on the bottom surface of the brush plate (301). A second electric push rod (304) for driving the cleaning plate (302) to move vertically is installed at the top of the brush plate (301).

2. The sieving and impurity removal device for tea production as described in claim 1, characterized in that: The screening mechanism (2) includes a vibrating screen (201), a swing block (202), a collection trough (203), a rotating shaft (204), a turntable (205), a connecting column (206), and a connecting rod (207). Four swing blocks (202) are hinged on the frame (1). The vibrating screen (201) is hinged to the top of the swing block (202). The rotating shaft (204) is mounted on the frame (1) through a bearing seat. The rotating shaft (204) is connected to the motor installed at the bottom of the frame (1) through a belt drive mechanism. The turntable (205) is mounted at the end of the rotating shaft (204). A connecting column (206) off-center is provided on its end face. The bottom end of the connecting rod (207) is hinged to the connecting column (206), and the top end is hinged to the side wall of the vibrating screen (201). A collection trough (203) for collecting impurities is installed at the bottom of the vibrating screen (201).

3. The sieving and impurity removal device for tea production as described in claim 1, characterized in that: The frame (1) is equipped with a collection trough (5) for collecting filamentous debris. The collection trough (5) is located directly above the vibrating screen (201). Both ends of the collection trough (5) are provided with L-shaped connecting blocks (501) that are slidably connected to the frame (1).

4. The sieving and impurity removal device for tea production as described in claim 1, characterized in that: The vibrating screen (201) and the collecting trough (203) are provided with discharge ports at their ends that discharge material in different directions.

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