Tea leaf screening, drying and finishing apparatus

Abstract

This utility model discloses a tea sieving, drying, and refining device, belonging to the technical field of tea refining equipment. It includes a barrel body with a base at its bottom. A hydraulic cylinder and a support rod are rotatably connected to the bottom end of the base. The bottom end of the hydraulic cylinder is rotatably connected to the top of the base, and the bottom end of the support rod is fixedly connected to the top of the base. Two sieves are arranged inside the barrel body, with the aperture of the sieves decreasing sequentially from top to bottom. A vibration assembly for driving the sieves to vibrate is located inside the barrel body. An opening is formed on the side of the barrel body away from the hydraulic cylinder, and a limiting protrusion is provided on the side wall of the opening. A discharge assembly for sealing the opening is fixedly connected to the top of the barrel body. This utility model, through the designed vibration assembly, heating rod, collection trough, and sieves, promotes tea leaf agitation, improves grading and sieving efficiency, shortens drying time, and allows sieving and drying to proceed simultaneously, thereby improving processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of tea refining equipment, specifically relating to a tea screening, drying and refining device. 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] Tea production requires deep processing, which refers to the production of tea-containing products using fresh tea leaves, finished tea products, or tea leaves, waste products, and by-products from tea factories as raw materials, and employing appropriate processing techniques and methods. Tea-containing products may be primarily tea or may be primarily composed of other substances. Refined tea processing refers to the production of tea by refining raw tea or semi-finished tea leaves through processes such as screening, rolling, winnowing, drying, blending, and mixing.

[0004] Traditional tea sorting is done manually, which is time-consuming, labor-intensive, inefficient, and results in poor processing. Screening machines are complex in structure, inconvenient to use and operate, and require transferring the tea leaves during drying, making the process cumbersome and affecting processing efficiency. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a tea sieving, drying and refining device.

[0006] The technical solution adopted to solve the above-mentioned technical problems is as follows: a tea sieving, drying and refining device, including a barrel body, a base provided below the barrel body, a hydraulic cylinder and a support rod rotatably connected to the bottom end of the base, the bottom end of the hydraulic cylinder rotatably connected to the top of the base, the bottom end of the support rod fixedly connected to the top of the base, two screens arranged inside the barrel body, the aperture of the two screens decreasing sequentially from top to bottom, a vibration component for driving the screens to vibrate is provided inside one of the barrel bodies, an opening is provided on the side of the barrel body away from the hydraulic cylinder, a limiting protrusion is provided on the side wall of the opening, a discharge component for sealing the opening is fixedly connected to the top of the barrel body, and a feed hopper is connected through the top of the barrel body.

[0007] Furthermore, the vibration assembly includes a motor and a ring frame. The motor is fixedly installed at the center of the bottom of the barrel. The output end of the motor is fixedly connected to a rotating shaft through the bottom of the barrel. The two ring frames are respectively located below the two sieves. Springs are fixedly connected between the lower surface of the sieve and the upper surface of the adjacent ring frame. The outer side walls of the ring frames are fixedly connected to the inner side walls of the barrel. The left and right inner walls of the ring frames are symmetrically rotatably connected to transmission rods. Cams are fixedly connected to the outer side walls of the transmission rods. The tops of the cams abut against the bottom of the sieve. The opposite ends of the two transmission rods are fixedly connected to driven bevel gears. The tops of the two driven bevel gears are meshed with master bevel gears. The inner side walls of the master bevel gears are fixedly connected to the outer side walls of the rotating shaft.

[0008] With the above technical solution, when in use, the two sieves with decreasing apertures from top to bottom achieve multi-level fine grading of tea, effectively separating tea leaves of different particle sizes and improving grading accuracy. The motor drives the rotating shaft to drive the main bevel gear, which in turn drives the cam to periodically push the sieve through the bevel gear and transmission rod. In conjunction with the spring, the sieve generates high-frequency vibration, preventing tea leaves from clogging the sieve holes and enhancing sieving efficiency. It also buffers vibration impact, maintains stable movement of the sieve, and extends the equipment's lifespan.

[0009] Furthermore, the discharge assembly includes a fixed frame fixed to the top of the barrel, an electric push rod fixedly installed at the top of the fixed frame, a baffle fixedly connected to the bottom of the movable rod of the electric push rod, the shape of the baffle matching the shape of the opening, a discharge port corresponding to the position of the annular frame opened on the side wall of the baffle, a discharge plate one fixed to the side wall of the baffle is provided below each discharge port, and a discharge plate two fixed to the side wall of the barrel is provided below the opening.

[0010] With the above technical solution, when sieving and grading tea, the baffle blocks the opening, and the side walls of the ring frame on each layer block the discharge port to prevent tea from leaking out. At the same time, it provides sufficient time for tea sieving to ensure the sieving quality. When discharging, the electric push rod retracts the movable rod to drive the baffle to rise, which moves the discharge port above the sieve. The graded tea is discharged through discharge plate one, and the screened impurities slide out from the opening through discharge plate two.

[0011] Furthermore, limit grooves are provided on both sides of the baffle, and the inner sidewall of the limit groove is slidably connected to the outer sidewall of the limit protrusion.

[0012] Through the above technical solution, the sliding seal between the limiting groove and the limiting protrusion ensures that the tea leaves do not leak out during the screening process, while also ensuring the stability of the sliding.

[0013] Furthermore, the inner side wall of the barrel is provided with a storage groove, and several heating rods are evenly installed inside the storage groove. The inner wall of the barrel is made of copper.

[0014] The above technical solution uses heating rods evenly arranged in the storage tank to achieve rapid and uniform heating, promote tea drying, and the excellent thermal conductivity of copper material prevents local overheating that could lead to a decline in tea quality.

[0015] Furthermore, a humidity sensor is installed on the inner wall of the top of the barrel.

[0016] The above technical solution allows for real-time monitoring of humidity inside the drum, which in turn triggers the heating rods to start and stop, ensuring a controllable drying process and preventing over-drying or uneven drying.

[0017] Furthermore, a material distribution plate is fixed to the upper inner wall of the barrel, and the material distribution plate is located directly below the feed hopper.

[0018] Through the above technical solution, the material distribution plate evenly disperses the tea leaves onto the screen, avoiding uneven sieving or clogging caused by material accumulation.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) By setting up vibration components, humidity sensors, heating rods, and storage tanks, the vibration components assist the vibration of the sieve to promote the turning of tea leaves and improve the grading and screening. At the same time, the heating rods are used to heat and dry the tea leaves, shorten the drying time, and reduce energy consumption. The humidity sensor monitors the humidity inside the barrel in real time and links the heating rods to start and stop, ensuring that the drying process is controllable and preventing over-drying or uneven drying. The sieving and drying are carried out simultaneously, improving processing efficiency.

[0021] (2) When the tea leaves are sieved and graded, the baffle of the discharge component blocks the opening, providing sufficient time for tea leaf screening and ensuring screening quality. When discharging, the baffle is pushed to move the discharge port above the sieve screen for discharge. The hydraulic cylinder pushes the barrel to tilt, making the discharge smoother. Attached Figure Description

[0022] Figure 1 This is a perspective view of a tea sieving, drying, and refining device according to this utility model;

[0023] Figure 2 This is a structural diagram of a tea sieving, drying, and refining device according to this utility model;

[0024] Figure 3 This is a perspective view of the vibration component of a tea sieving, drying and refining device according to this utility model;

[0025] Figure 4 This is a partial structural diagram of a tea sieving, drying and refining device according to this utility model;

[0026] Figure 5This is a three-dimensional view of the discharge component of a tea sieving, drying and refining device according to this utility model.

[0027] Reference numerals: 1. Barrel body; 2. Base; 3. Hydraulic cylinder; 4. Support rod; 5. Screen; 6. Vibration assembly; 7. Discharge assembly; 8. Feed hopper; 9. Humidity sensor; 10. Distributor plate; 11. Heating rod; 101. Collection slot; 102. Opening; 103. Limiting protrusion; 601. Motor; 602. Rotating shaft; 603. Ring frame; 604. Spring; 605. Main bevel gear; 606. Transmission rod; 607. Cam; 608. Driven bevel gear; 701. Fixing frame; 702. Electric push rod; 703. Baffle; 7031. Discharge port; 7032. Limiting groove; 704. Discharge plate one; 705. Discharge plate two. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figures 1-5 As shown, this embodiment of a tea sieving, drying, and refining device includes a barrel body 1. A base 2 is located below the barrel body 1. A hydraulic cylinder 3 and a support rod 4 are rotatably connected to the bottom end of the base 2. The bottom end of the hydraulic cylinder 3 is rotatably connected to the top of the base 2, and the bottom end of the support rod 4 is fixedly connected to the top of the base 2. The hydraulic cylinder 3 and the support rod 4 adjust the tilt angle of the barrel body 1, facilitating control of the tea sieving speed and discharge smoothness to adapt to different processing needs. Two sieves 5 are arranged inside the barrel body 1, with the aperture of the two sieves 5 decreasing sequentially from top to bottom. The barrel 1 is equipped with a vibration component 6 that drives the screen 5 to vibrate. An opening 102 is provided on the side of the barrel 1 away from the hydraulic cylinder 3. The opening 102 is designed to facilitate the disassembly and cleaning of the screen. A limiting protrusion 103 is provided on the side wall of the opening 102. A discharge component 7 that seals the opening 102 is fixedly connected to the top of the barrel 1. A feed hopper 8 is connected through the top of the barrel 1. A distribution plate 10 is fixedly connected to the upper inner side wall of the barrel 1. The distribution plate 10 is located directly below the feed hopper 8. The distribution plate 10 evenly disperses the tea leaves to the screen 5 to avoid uneven screening or blockage caused by the accumulation of feed.

[0030] The vibration assembly 6 includes a motor 601 and an annular frame 603. The motor 601 is fixedly installed at the center of the bottom of the barrel 1. The output end of the motor 601 passes through the bottom of the barrel 1 and is fixedly connected to a rotating shaft 602. Two annular frames 603 are respectively located below two sieves 5. Springs 604 are fixedly connected between the lower surface of the sieve 5 and the upper surface of the adjacent annular frame 603. The outer side walls of the annular frames 603 are fixedly connected to the inner side walls of the barrel 1. Transmission rods 606 are symmetrically rotatably connected to the left and right inner walls of the annular frames 603. Cams 607 are fixedly connected to the outer side walls of the transmission rods 606. The top of each cam 607 abuts against the bottom of the sieve 5. The opposite ends of the two transmission rods 606 are fixedly connected to bevel gears. The gear 608 has two bevel gears 608 meshing with the top of the main bevel gear 605. The inner sidewalls of the main bevel gear 605 are fixedly connected to the outer sidewalls of the rotating shaft 602. In use, the two sieves 5 with decreasing apertures from top to bottom achieve multi-level fine grading of tea, effectively separating tea of ​​different particle sizes and improving grading accuracy. The motor 601 drives the rotating shaft 602 to drive the main bevel gear 605, which in turn drives the cam 607 to periodically push the sieve through the bevel gear 608 and the transmission rod 606. With the help of the spring 604, the sieve 5 generates high-frequency vibration, which prevents tea from clogging the sieve holes and enhances the sieving efficiency. It also buffers the vibration impact, maintains the stable movement of the sieve 5, and extends the service life of the equipment.

[0031] The discharge assembly 7 includes a fixed frame 701 fixed to the top of the barrel 1. An electric push rod 702 is fixedly installed at the top of the fixed frame 701. A baffle 703 is fixedly connected to the bottom of the movable rod of the electric push rod 702. Limiting grooves 7032 are opened on both side walls of the baffle 703. The inner side wall of the limiting groove 7032 is slidably connected to the outer side wall of the limiting protrusion 103. The sliding seal between the limiting groove 7032 and the limiting protrusion 103 ensures that the tea leaves do not leak out during the screening process while ensuring the stability of the sliding. The shape of the baffle 703 is adapted to the shape of the opening 102. The side wall of the baffle 703 has a discharge port 7031 corresponding to the position of the annular frame 603. Below each of the two parts, there is a discharge plate 704 fixed to the side wall of the baffle 703, and below the opening 102, there is a discharge plate 705 fixed to the side wall of the barrel 1. When the tea is sieved and graded, the baffle 703 blocks the opening 102, and the side wall of the ring frame 603 of each layer blocks the discharge port 7031 to prevent the tea from leaking out. At the same time, it provides sufficient time for tea sieving to ensure the sieving quality. When discharging, the electric push rod 702 retracts the movable rod to drive the baffle 703 to rise, and drives the discharge port 7031 to move above the sieve 5. The graded tea is discharged through the discharge plate 704, and the screened impurities slide out from the opening 102 through the discharge plate 705.

[0032] The side wall of the barrel 1 has a storage groove 101. Several heating rods 11 are evenly installed inside the storage groove 101. The heating rods 11 are stored in the side wall groove to avoid taking up space and to facilitate maintenance. The inner wall of the barrel 1 is made of copper. The heating rods 11 evenly arranged in the storage groove 101 can achieve rapid and uniform heating. With the assistance of tea vibration, the heating area of ​​the tea is increased, which promotes the drying of the tea. Copper has excellent thermal conductivity, which avoids local overheating and thus avoids the decline in tea quality. In addition, copper has antibacterial properties, which reduces the risk of tea contamination.

[0033] A humidity sensor 9 is installed on the inner wall of the top of the barrel 1 to monitor the humidity inside the barrel in real time. It can be linked to the start and stop of the heating rod 11 to ensure that the drying process is controllable and to prevent over-drying or uneven drying.

[0034] The working principle of this embodiment is as follows: During use, tea leaves enter the barrel 1 through the feed hopper 8. The distribution plate 10 evenly disperses the tea leaves onto the sieve 5. The motor 601 drives the rotating shaft 602 to drive the main bevel gear 605. The bevel gear 608 and the transmission rod 606 drive the cam 607 to periodically push the sieve. In conjunction with the spring 604, the sieve 5 generates high-frequency vibration, preventing the tea leaves from clogging the sieve holes and enhancing the screening efficiency. The two sieves 5 with decreasing hole diameters from top to bottom achieve multi-level fine grading of the tea leaves. While screening, the heating rod 11 heats the tea leaves. Uniform heating is achieved, and the vibration of the tea leaves helps to increase the heating area and promote drying. The humidity sensor 9 monitors the humidity inside the barrel in real time and can be linked to the start and stop of the heating rod 11 to ensure that the drying process is controllable. After processing, the hydraulic cylinder 3 is activated to adjust the tilt angle of the barrel 1 to assist in the smooth discharge. During discharge, the electric push rod 702 retracts the movable rod to drive the baffle 703 to rise, which moves the discharge port 7031 above the screen 5. The graded tea leaves are discharged through the first discharge plate 704, and the screened impurities slide out from the opening 102 through the second discharge plate 705.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A tea sieving, drying, and refining device, comprising a barrel (1), characterized in that: The barrel (1) is provided with a base (2) at the bottom. The bottom end of the base (2) is rotatably connected to a hydraulic cylinder (3) and a support rod (4). The bottom end of the hydraulic cylinder (3) is rotatably connected to the top of the base (2). The bottom end of the support rod (4) is fixedly connected to the top of the base (2). Two screens (5) are arranged inside the barrel (1). The aperture of the two screens (5) decreases from top to bottom. The barrel (1) is provided with a vibration component (6) to drive the screens (5) to vibrate. An opening (102) is opened on the side of the barrel (1) away from the hydraulic cylinder (3). A limiting protrusion (103) is provided on the side wall of the opening (102). A discharge component (7) to block the opening (102) is fixedly connected to the top of the barrel (1). A feed hopper (8) is connected through the top of the barrel (1).

2. The tea sieving, drying, and refining device according to claim 1, characterized in that, The vibration assembly (6) includes a motor (601) and a ring frame (603). The motor (601) is fixedly installed at the center of the bottom of the barrel (1). The output end of the motor (601) is connected to a rotating shaft (602) through the bottom of the barrel (1). The two ring frames (603) are located below the two screens (5). A spring (604) is fixed between the lower surface of the screen (5) and the upper surface of the adjacent ring frame (603). The outer walls of the ring frames (603) are fixed to the inner walls of the barrel (1). The ring frame (603) is symmetrically connected to the inner walls of the left and right sides by transmission rods (606). The outer walls of the transmission rods (606) are fixedly connected to cams (607). The top of each cam (607) abuts against the bottom of the screen (5). The opposite ends of the two transmission rods (606) are fixedly connected to bevel gears (608). The tops of the two bevel gears (608) are meshed with main bevel gears (605). The inner walls of the main bevel gears (605) are fixedly connected to the outer walls of the rotating shaft (602).

3. The tea sieving, drying, and refining device according to claim 1, characterized in that, The discharge assembly (7) includes a fixed frame (701) fixed to the top of the barrel (1). An electric push rod (702) is fixedly installed at the top of the fixed frame (701). A baffle (703) is fixedly connected to the bottom of the movable rod of the electric push rod (702). The shape of the baffle (703) is adapted to the shape of the opening (102). The side wall of the baffle (703) is provided with a discharge port (7031) corresponding to the position of the ring frame (603). Below the discharge port (7031) is a discharge plate one (704) fixed to the side wall of the baffle (703). Below the opening (102) is a discharge plate two (705) fixed to the side wall of the barrel (1).

4. The tea sieving, drying, and refining device according to claim 3, characterized in that, The baffle (703) has a limiting groove (7032) on both sides of its sidewalls, and the inner sidewall of the limiting groove (7032) is slidably connected to the outer sidewall of the limiting protrusion (103).

5. The tea sieving, drying, and refining device according to claim 1, characterized in that, The side wall of the barrel (1) has a storage groove (101) inside, and several heating rods (11) are evenly installed inside the storage groove (101). The inner wall of the barrel (1) is made of copper.

6. The tea sieving, drying, and refining device according to claim 1, characterized in that, A humidity sensor (9) is installed on the inner wall of the top of the barrel (1).

7. The tea sieving, drying, and refining device according to claim 1, characterized in that, A material distribution plate (10) is fixed to the upper inner wall of the barrel (1), and the material distribution plate (10) is located directly below the feed hopper (8).

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