Tea leaf colour sorter

Abstract

The utility model discloses a kind of tea color selection grading equipment, including main frame and conveying frame, the one end of main frame is fixedly connected with control panel, the other side fixedly connected with image acquisition component in main frame top, the one side fixedly connected with preliminary screening structure in main frame, preliminary screening structure includes screening frame, bottom frame, waste material port, discharge port, blanking plate, baffle cover, inclined screen plate, guide rod, spring, pressing seat, transmission rod and cam, screening frame is fixedly connected in the one side of main frame, the one side fixedly connected with air injection valve component in the one end of main frame interior.The utility model starts corresponding motor to make transmission rod drive its outside cam rotate to make inclined screen plate repeatedly shake up and down and carry out screening to tea, so that smaller broken slag in tea will fall down from waste material port, and remaining tea is dropped by blanking plate opening from blanking plate to the top of conveying frame by discharge port.

Description

Technical Field

[0001] This utility model relates to the technical field of tea color sorting and grading equipment, and in particular to a tea color sorting and grading equipment. Background Technology

[0002] During tea production, in order to ensure the quality of tea, the produced tea leaves are often screened so that they can be classified according to size and color. Therefore, special tea color sorting and grading equipment is often used when screening tea leaves.

[0003] To address this, patent specification CN221387598U discloses a tea color sorter, relating to the field of tea color sorting technology. This invention includes a housing with a color sorting chamber inside. A collection box slides into the lower part of the housing, and a first and second collection trough are located on the upper side of the collection box. A feeding assembly is installed on one side of the housing. Long and short inclined plates are installed on opposite sides of the inner wall of the color sorting chamber. Vertical plates are installed below both the long and short inclined plates, and multiple partitions are installed between the two vertical plates. A diversion guide plate corresponding to the partition is installed on the upper side of the long inclined plate, and a baffle corresponding to the partition is installed on the upper side of the short inclined plate. Multiple lenses are installed on one of the vertical plates. This invention uses the long inclined plate and the diversion guide plate to divert the tea leaves sliding into the color sorting chamber, reducing tea leaf accumulation and blockage. The diversion guide plate, along with the baffles and partitions, reduces the probability of the diverted tea leaves re-aggregating and mixing. While the above-mentioned tea color sorter has good color sorting performance, some problems still exist:

[0004] Because tea leaves easily contain a certain amount of broken leaves, residues and other impurities after production, failure to perform preliminary screening will increase the workload of electronic components such as camera sensors, thereby shortening the lifespan and working efficiency of these electronic components. Utility Model Content

[0005] The purpose of this invention is to provide a tea color sorting and grading device to solve the problem of limited working efficiency of existing tea color sorters.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a tea color sorting and grading device, including a main frame and a feeding rack. A control panel is fixedly connected to one end of the main frame, and an image acquisition component is fixedly connected to the other side of the top of the main frame. A primary screening structure is fixedly connected to one side of the main frame. The primary screening structure includes a screening frame, a bottom frame, a waste outlet, a discharge outlet, a feeding plate, a baffle, an inclined screen plate, a guide rod, a spring, a pressing seat, a transmission rod, and a cam. The screening frame is fixedly connected to one side of the main frame. A spreading mechanism is fixedly connected to one side of the top of the main frame. A feeding rack is provided inside the main frame. An air jet valve assembly is fixedly connected to one side of one end of the inside of the main frame.

[0007] In operation, the processed tea leaves are sequentially placed into the screening frame, allowing them to gradually slide to the top of the conveyor frame. The conveyor frame then transports the tea leaves towards the image acquisition component. Since the image acquisition component is equipped with a dedicated CCD optical sensor for color sorting machines, and this sensor faces the conveyor frame, the tea leaves are imaged during the intermittent transport process. Utilizing the color differences between the tea stems, yellow leaves, and qualified products, the control panel can analyze whether the tea leaves at the corresponding location are qualified. When tea leaves fall through the end of the conveyor frame, if the tea leaves at that location are defective, the air jet valve assembly is activated to blow the defective tea leaves out. When qualified tea leaves fall, the air jet valve assembly closes, allowing the tea leaves to fall normally. This spacing between the falling locations of defective and qualified tea leaves enables color sorting of the tea leaves.

[0008] Preferably, a bottom frame is fixedly connected to the lower part of the inner sidewall of the screening frame, a waste outlet is opened at the bottom end of the screening frame, a discharge outlet is opened inside one side of the screening frame, a feeding plate is fixedly connected to the lower part of one side of the screening frame, a cover is provided on one side of the screening frame, an inclined screen plate is provided above the bottom frame, guide rods are fixedly connected to both sides of the top of the bottom frame, springs are wrapped around the outside of the guide rods, pressing seats are fixedly connected to both ends of the bottom of the inclined screen plate, a transmission rod is rotatably connected to both ends inside the screening frame, and a cam is fixedly connected to both ends of the outer wall of the transmission rod.

[0009] Preferably, the inclined screen plate and the guide rod have a sliding structure, and the guide rod is symmetrically distributed about the vertical center line of the bottom frame, so as to make the shaking of the inclined screen plate more stable.

[0010] Preferably, the transmission rod and the two ends of the inner sidewall of the screen frame are rotating, and the cams are symmetrically distributed about the vertical center line of the transmission rod, so that the rotation of the cams can drive the inclined screen plate to reciprocate up and down.

[0011] Preferably, the material spreading mechanism includes a support frame, a servo motor assembly, a material shaking frame, an internal thread seat, a guide groove, and a reciprocating screw. The support frame is fixedly connected to one side of the top of the main frame. A servo motor assembly is fixedly connected to one side of the support frame. The material shaking frame is slidably connected to the inner side of the support frame. An internal thread seat is fixedly connected to the bottom end of the material shaking frame. A guide groove is opened inside the bottom end of the support frame. Reciprocating screws are rotatably connected to both ends of the bottom of the support frame.

[0012] Preferably, the support frame and the material shaking frame have a sliding structure, and the support frame and the reciprocating screw have a rotating structure, so that the motor-driven reciprocating screw can rotate rapidly.

[0013] Preferably, the internal threaded seat and the reciprocating lead screw are connected by a thread, so that the rotation of the reciprocating lead screw can cause the internal threaded seat to drive the material shaking frame to move back and forth.

[0014] Compared with the existing technology, the beneficial effects of this utility model are: the cam is rotated by the motor drive, which causes the inclined screen plate to vibrate repeatedly and perform preliminary screening of unqualified products such as debris and small tea leaves, thereby reducing the workload of the color sorter. At the same time, before the tea leaves fall to the conveyor for intermittent conveying, the shaking frame is repeatedly shaken by the rotation of the reciprocating screw driven by the servo motor assembly, so that the tea leaves are more dispersed when they fall, and the accumulation of tea leaves will not affect image acquisition and color sorting.

[0015] 1. Start the corresponding motor to drive the transmission rod to rotate the cam on its outer side, so that the inclined screen plate shakes up and down repeatedly and screens the tea leaves. Smaller tea leaves will fall down from the waste outlet, while the remaining tea leaves will fall from the discharge port to the top of the conveyor frame after the cover is opened.

[0016] 2. Start the servo motor assembly to drive the reciprocating screw to rotate rapidly, causing the threaded internal thread seat to drive the shaking frame to shake rapidly. At this time, the tea leaves that fall into the inner side of the shaking frame will gradually flatten under rapid shaking and fall evenly to the top of the conveying frame. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the primary screening structure of this utility model.

[0019] Figure 3 This is a three-dimensional partial structural diagram of the primary screening structure of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the material spreading mechanism of this utility model;

[0021] Figure 5 This is a three-dimensional partial disassembly diagram of the material spreading mechanism of this utility model.

[0022] In the diagram: 1. Main frame; 2. Control panel; 3. Primary screening structure; 301. Screening frame; 302. Bottom frame; 303. Waste outlet; 304. Discharge outlet; 305. Feeding plate; 306. Cover; 307. Inclined screen plate; 308. Guide rod; 309. Spring; 310. Pressing seat; 311. Transmission rod; 312. Cam; 4. Spreading mechanism; 401. Support frame; 402. Servo motor assembly; 403. Shaking frame; 404. Internal thread seat; 405. Guide groove; 406. Reciprocating screw; 5. Conveying frame; 6. Image acquisition assembly; 7. Air jet valve assembly. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 This utility model provides a tea color sorting and grading device, including a main frame 1 and a conveying rack 5. A control panel 2 is fixedly connected to one end of the main frame 1, and an image acquisition component 6 is fixedly connected to the other side of the top of the main frame 1. The conveying rack 5 is arranged inside the main frame 1. An air jet valve component 7 is fixedly connected to one side of one end of the main frame 1. A primary screening structure 3 is fixedly connected to one side of the main frame 1. The primary screening structure 3 includes a screening frame 301, a bottom frame 302, a waste port 303, a discharge port 304, a feeding plate 305, a cover 306, an inclined screen plate 307, a guide rod 308, a spring 309, a pressing seat 310, a transmission rod 311, and a cam 312. The screening frame 301 is fixedly connected to one side of the main frame 1. The bottom frame 302 is fixedly connected to the lower part of the inner wall of the screening frame 301. A waste port 303 is opened at the bottom end of the screening frame 301. A discharge port 304 is provided inside one side of the material frame 301. A feeding plate 305 is fixedly connected to the lower side of one side of the screening frame 301. A cover 306 is provided on one side of the screening frame 301. An inclined screen plate 307 is provided above the bottom frame 302. Guide rods 308 are fixedly connected to both sides of the top of the bottom frame 302. Springs 309 are wrapped around the outside of the guide rods 308. Pressing seats 310 are fixedly connected to both ends of the bottom of the inclined screen plate 307. A transmission rod 311 is rotatably connected to both ends inside the screening frame 301. Cams 312 are fixedly connected to both ends of the outer wall of the transmission rod 311. The inclined screen plate 307 and the guide rod 308 have a sliding structure. The guide rods 308 are symmetrically distributed about the vertical center line of the bottom frame 302. The transmission rod 311 and the two ends of the inner wall of the screening frame 301 have a rotating structure. The cams 312 are symmetrically distributed about the vertical center line of the transmission rod 311.

[0025] See attached document Figure 1 , Figure 2 and Figure 3When the tea sorting and grading equipment is in use, the finished tea leaves are placed into the screening frame 301. Then, the equipment is started, and the motor connected to the transmission rod 311 starts and drives the transmission rod 311 to rotate. At this time, the cam 312 fixed on the outside of the transmission rod 311 gradually presses the pressing seat 310 along the outside. Under the connection of the sliding structure of the guide rod 308 and the inclined screen plate 307 and the elastic force of the spring 309, the inclined screen plate 307 shakes up and down repeatedly. Since the top of the inclined screen plate 307 is inclined and the inclined direction is towards the discharge port 304, the tea leaves placed into the screening frame 301 are gradually screened by the inclined screen plate 307 as the inclined screen plate 307 shakes. Smaller pieces of tea leaves will fall down from the waste port 303, while the remaining tea leaves will fall from the discharge port 304 through the discharge plate 305 to the top of the conveyor frame 5 after the cover 306 is opened. This is the initial screening of the tea leaves, thereby improving the efficiency of the tea sorting equipment.

[0026] A material spreading mechanism 4 is fixedly connected to one side of the top of the main frame 1. The material spreading mechanism 4 includes a support frame 401, a servo motor assembly 402, a material shaking frame 403, an internal thread seat 404, a guide groove 405, and a reciprocating screw 406. The support frame 401 is fixedly connected to one side of the top of the main frame 1. The servo motor assembly 402 is fixedly connected to one side of the support frame 401. The material shaking frame 403 is slidably connected to the inner side of the support frame 401. The internal thread seat 404 is fixedly connected to the bottom end of the material shaking frame 403. The guide groove 405 is opened inside the bottom end of the support frame 401. The reciprocating screw 406 is rotatably connected to both ends of the bottom of the support frame 401. The support frame 401 and the material shaking frame 403 have a sliding structure, and the support frame 401 and the reciprocating screw 406 have a rotating structure. The internal thread seat 404 and the reciprocating screw 406 have a threaded connection structure.

[0027] See attached document Figure 1 , Figure 4 and Figure 5 When the device is in use, the corresponding sensor inside the image acquisition component 6 acquires images to grade the tea leaves according to their color. To avoid poor image acquisition results due to tea leaf stacking during the image acquisition process, the tea leaves are pre-dropped into the inner side of the shaking frame 403 when they are placed on the top of the conveyor rack 5. At this time, the servo motor component 402 is activated to drive the reciprocating screw 406 to rotate rapidly. This causes the internal thread seat 404, which is threaded to the reciprocating screw 406, to drive the shaking frame 403 to move rapidly back and forth along the outer thread of the reciprocating screw 406. The tea leaves that have fallen into the inner side of the shaking frame 403 are gradually flattened under rapid shaking and fall evenly onto the top of the conveyor rack 5, so that the tea leaves are more evenly distributed during the conveying process, thereby greatly improving the image acquisition effect.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tea color sorting and grading device, comprising a main frame (1) and a material conveying rack (5); Its features are: A control panel (2) is fixedly connected to one end of the main frame (1), and an image acquisition component (6) is fixedly connected to the other side of the top of the main frame (1). A primary screening structure (3) is fixedly connected to one side of the main frame (1). The primary screening structure (3) includes a screening frame (301), a bottom frame (302), a waste outlet (303), a discharge outlet (304), a feeding plate (305), a cover (306), an inclined screen plate (307), a guide rod (308), a spring (309), a pressing seat (310), a transmission rod (311), and a cam (312). The screening frame (301) is fixedly connected to one side of the main frame (1). A spreading mechanism (4) is fixedly connected to one side of the top of the main frame (1). The inner side of the main frame (1) is provided with a material conveying rack (5), and a jet valve assembly (7) is fixedly connected to one side of one end of the main frame (1).

2. The tea color sorting and grading equipment according to claim 1, characterized in that: A bottom frame (302) is fixedly connected to the lower part of the inner wall of the screening frame (301). A waste outlet (303) is opened at the bottom end of the screening frame (301). A discharge outlet (304) is opened inside one side of the screening frame (301). A feed plate (305) is fixedly connected to the lower part of one side of the screening frame (301). A cover (306) is provided on one side of the screening frame (301). An inclined screen plate (307) is provided above the bottom frame (302). Guide rods (308) are fixedly connected to both sides of the top of the bottom frame (302). A spring (309) is wrapped around the outside of the guide rods (308). Pressing seats (310) are fixedly connected to both ends of the bottom of the inclined screen plate (307). A transmission rod (311) is rotatably connected to both ends inside the screening frame (301). A cam (312) is fixedly connected to both ends of the outer wall of the transmission rod (311).

3. The tea color sorting and grading equipment according to claim 2, characterized in that: The inclined screen plate (307) and the guide rod (308) are in a sliding structure, and the guide rod (308) is symmetrically distributed about the vertical center line of the bottom frame (302).

4. The tea color sorting and grading equipment according to claim 2, characterized in that: The transmission rod (311) and the inner sidewall of the screen frame (301) are in a rotating structure, and the cam (312) is symmetrically distributed about the vertical center line of the transmission rod (311).

5. The tea color sorting and grading equipment according to claim 1, characterized in that: The material spreading mechanism (4) includes a support frame (401), a servo motor assembly (402), a material shaking frame (403), an internal thread seat (404), a guide groove (405), and a reciprocating screw (406). The support frame (401) is fixedly connected to one side of the top of the main frame (1). The servo motor assembly (402) is fixedly connected to one side of the support frame (401). The material shaking frame (403) is slidably connected to the inner side of the support frame (401). The internal thread seat (404) is fixedly connected to the bottom end of the material shaking frame (403). The guide groove (405) is opened inside the bottom end of the support frame (401). The reciprocating screw (406) is rotatably connected to both ends of the bottom of the support frame (401).

6. The tea color sorting and grading equipment according to claim 5, characterized in that: The support frame (401) and the shaking frame (403) have a sliding structure, and the support frame (401) and the reciprocating lead screw (406) have a rotating structure.

7. A tea color sorting and grading device according to claim 5, characterized in that: The internal threaded seat (404) and the reciprocating lead screw (406) are connected by a thread.

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