Tea appearance quality detection device based on machine vision
By introducing a combination of a sealed box, filter screen, dust extraction fan, and waste bin into the tea color sorter, the problem of tea residue and tea powder adhering during the tea screening process is solved, achieving efficient tea screening and reducing maintenance costs.
Patent Information
- Application Number
- CN202520060160.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Traditional tea color sorters are prone to being covered by tea leaves and powder during the screening process, which leads to errors in the screening results of the CCD machine vision sensor and high maintenance costs.
Design a machine vision-based tea appearance quality inspection device, which includes a fixed frame, hopper, vibrator, screening chamber and residue removal mechanism. It uses a sealed box, filter screen, dust extraction fan and waste bin to remove tea residue and tea powder by negative pressure to prevent them from entering the CCD sensor.
This effectively reduces the maintenance frequency and cost of CCD sensors, improves the accuracy and efficiency of screening, and reduces the need for manual cleaning.
Smart Images
Figure CN223775433U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of tea color sorting machine technology, specifically a tea appearance quality inspection device based on machine vision. Background Technology
[0002] A tea production line is a complex processing procedure that transforms freshly picked tea leaves into a consumer-ready tea product. The steps in a tea production line typically include picking, fixation (or pan-firing), rolling, fermentation, and drying. The quality of the tea is primarily judged by its color, shape, aroma, and taste.
[0003] In traditional tea production lines, the color of tea is usually inspected manually. However, this screening method is inefficient and labor-intensive. Therefore, to improve screening efficiency, tea color sorters are used. These color sorters utilize CCD machine vision sensors and compressed air valves to screen the shape and color of tea leaves. However, when the tea leaves enter the feed hopper of the color sorter, they are vibrated by a vibrator into an inclined feed bin. During this vibration, some tea fragments and tea powder may enter the detection area of the CCD machine vision sensor. This can cause the CCD machine vision sensor to become covered with tea fragments and tea powder, leading to inaccurate screening results.
[0004] Therefore, this application provides a machine vision-based tea appearance quality inspection device to solve the above problems. Utility Model Content
[0005] This application provides a machine vision-based tea appearance quality inspection device, which aims to solve the problem mentioned in the background art that color sorters are easily affected by tea fragments and tea powder during the tea screening process, thus affecting the screening results.
[0006] To achieve the above objectives, this application provides the following technical solution: a machine vision-based tea appearance quality inspection device, including a fixed frame and a hopper disposed on the fixed frame, a vibrator for discharging material disposed on the fixed frame, a screening chamber fixedly installed on the fixed frame, and a discharge chamber disposed between the screening chamber and the hopper;
[0007] The feeding hopper is equipped with a slag removal mechanism, and the screening hopper is equipped with a waste bin;
[0008] The slag removal mechanism includes a sealed box mounted on the feeding hopper, a filter screen detachably connected to the sealed box, two dust extraction fans evenly spaced on the side of the sealed box away from the filter screen, a movable block on the screening hopper, and a flexible air duct installed on the waste bin for connecting to the dust extraction fans. The slag removal mechanism is a long, narrow box. The filter screen filters the tea leaves passing through the feeding hopper, allowing tea residue and tea powder to enter the filter screen and be drawn into the waste bin by the negative pressure generated by the dust extraction fans.
[0009] Preferably, a plurality of mounting seats are installed at equal intervals on the feeding hopper, and a limiting slide rail is fixedly connected to the sealing box. A positioning block for inserting into the mounting seat is slidably connected to the limiting slide rail. The positioning block and the mounting seat are installed by a plug-in engagement method, which facilitates disassembly later.
[0010] Preferably, the mounting base has a through hole, a movable block is movably connected to the through hole, the positioning block has a groove, a first spring is fixedly connected in the groove, and a limit block is fixedly connected to the upper end of the first spring. The through hole on the mounting base is used to allow the limit block on the positioning block to lift the movable block and form a locking and fixing when it enters the interior of the mounting base and moves to the through hole.
[0011] Preferably, the through hole in the mounting base is adapted to the limiting block.
[0012] Preferably, a second spring is fixedly connected inside the mounting base, and a fixing plate is fixedly connected to one end of the second spring near the positioning block.
[0013] Preferably, the waste bin is provided with several sets of vent holes, and a cover plate is detachably installed on the side of the waste bin.
[0014] This testing device features a sealed box on the feeding hopper. The sealed box, along with a filter, a vacuum fan, an air duct, and a waste bin, works in conjunction with these components. When tea leaves are fed into the hopper for sieving, the vacuum fan generates negative pressure, drawing tea residue and powder from the feeding hopper into the air duct and then into the waste bin for storage. Normal tea leaves, due to their weight and the filter, slide smoothly into the sieving hopper and pass through the sieving process. This residue removal and protection method eliminates the need for frequent disassembly of the color sorter to clean the CCD machine vision sensor lens, significantly reducing maintenance costs.
[0015] The testing device uses a snap-fit connection between the sealing box and the feeding hopper to fix them together. If some residue or tea powder accumulates inside the sealing box after a period of use, the sealing box can be removed from the feeding hopper at any time and the accumulated residue or tea powder can be cleaned. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of a machine vision-based tea appearance quality inspection device.
[0017] Figure 2 This is a schematic diagram of the sealed box structure;
[0018] Figure 3 This is a schematic diagram of the structure on the back of the sealed box;
[0019] Figure 4 This is a structural schematic diagram of the cross-section of the mounting base;
[0020] Figure 5 This is a structural schematic diagram of the cross-section of the positioning block.
[0021] In the picture:
[0022] 1. Fixed frame; 2. Hopper; 3. Vibrator; 4. Feeding bin; 5. Screening bin; 6. Slag removal mechanism; 61. Sealing box; 611. Filter screen; 612. Dust extraction fan; 613. Limiting slide rail; 62. Air guide hose; 63. Positioning block; 631. Limiting block; 632. First spring; 64. Mounting base; 65. Movable block; 66. Second spring; 67. Fixed plate; 68. Waste bin; 69. Exhaust port. Detailed Implementation
[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0024] This embodiment provides a machine vision-based tea appearance quality inspection device, such as... Figure 1-5 As shown, the detection device includes a fixed frame 1 and a hopper 2 set on the fixed frame 1. A vibrator 3 for discharging material is set on the fixed frame 1. A screening chamber 5 is fixedly installed on the fixed frame 1. A discharge chamber 4 is set between the screening chamber 5 and the hopper 2.
[0025] The feeding hopper 4 is equipped with a slag removal mechanism 6, and the screening hopper 5 is equipped with a waste bin 68;
[0026] The slag removal mechanism 6 includes a sealed box 61 installed on the feeding bin 4. A filter screen 611 is detachably connected to the sealed box 61. Two dust suction fans 612 are equidistantly arranged on the side of the sealed box 61 away from the filter screen 611. A movable block 65 is installed on the screening bin 5. An air guide hose 62 for connecting to the dust suction fans 612 is installed on the waste bin 68.
[0027] Specifically, the slag removal mechanism 6 is a long, narrow box. The filter screen 611 filters the tea leaves that have passed through the feeding bin 4. Tea residue and tea powder can enter the interior of the filter screen 611 and enter the interior of the waste bin 68 through the negative pressure generated by the dust extraction fan 612. The interior of the waste bin 68 is equipped with a breathable dust collection bag and a multi-layered dustproof plate. The air generated by the negative pressure is discharged to the outside through the exhaust port 69 after passing through multiple layers of filtration. The discharged air will not carry away tea powder and thus affect the surrounding environment.
[0028] Several mounting seats 64 are installed at equal intervals on the feeding hopper 4. A limit slide rail 613 is fixedly connected to the sealing box 61, and a positioning block 63 for inserting into the mounting seat 64 is slidably connected on the limit slide rail 613.
[0029] More specifically, the positioning block 63 and the mounting base 64 are installed by a plug-in snap-fit method, which facilitates disassembly later.
[0030] The mounting base 64 has a through hole, and a movable block 65 is movably connected to the through hole. The positioning block 63 has a groove, and a first spring 632 is fixedly connected in the groove. A limit block 631 is fixedly connected to the upper end of the first spring 632. The through hole of the mounting base 64 is adapted to the limit block 631. A second spring 66 is fixedly connected inside the mounting base 64, and a fixing plate 67 is fixedly connected to the end of the second spring 66 near the positioning block 63.
[0031] It should be noted that the through hole on the mounting base 64 is used for the limiting block 631 on the positioning block 63 to enter the interior of the mounting base 64 and move to the through hole, which can lift the movable block 65 and form a locking and fixing. When the positioning block 63 is in the locking state, the fixing plate 67 is pushed into the interior and the second spring 66 is squeezed into a compressed state. When it is necessary to separate the positioning block 63 from the mounting base 64 later, simply press the movable block 65 to cooperate with the second spring 66 to push the positioning block 63 out along the limiting slide rail 613.
[0032] The waste bin 68 has several sets of vent holes 69, and a cover plate can be detachably installed on the side of the waste bin 68.
[0033] It is worth mentioning that the cover can be removed at any time to take out the dust collection bag inside the waste bin 68 and recycle the tea residue inside.
[0034] In use, a sealed box 61 is designed on the feeding hopper 4. The filter screen 611, the dust extraction fan 612, the air guide hose 62 and the waste bin 68 on the sealed box 61 work together to put tea leaves into the hopper 2 for screening. When the tea leaves are put into the hopper 2 for screening, the dust extraction fan 612 is activated to generate negative pressure to suck the tea residue and tea powder passing through the feeding hopper 4 into the air guide hose 62 and into the waste bin 68 for storage. Normal tea leaves can slide down to the screening chamber 5 normally and be screened due to their own weight and the cooperation of the filter screen 611. With this residue removal and protection method, there is no need to frequently disassemble the color sorter to clean the lens of the CCD machine vision sensor, which greatly reduces the maintenance cost.
[0035] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.
Claims
1. A machine vision-based tea appearance quality inspection device, comprising a fixed frame (1) and a hopper (2) disposed on the fixed frame (1), wherein a vibrator (3) for discharging is disposed on the fixed frame (1), a screening chamber (5) is fixedly installed on the fixed frame (1), and a feeding chamber (4) is disposed between the screening chamber (5) and the hopper (2). Its features are: The feeding hopper (4) is equipped with a slag removal mechanism (6), and the screening hopper (5) is equipped with a waste bin (68). The slag removal mechanism (6) includes a sealing box (61) installed on the feeding bin (4), a filter screen (611) is detachably connected to the sealing box (61), two dust suction fans (612) are equidistantly arranged on the side of the sealing box (61) away from the filter screen (611), a movable block (65) is provided on the screening bin (5), and an air guide hose (62) for connecting to the dust suction fan (612) is installed on the waste bin (68).
2. The machine vision-based tea appearance quality inspection device according to claim 1, characterized in that: The feeding hopper (4) is equipped with several mounting seats (64) at equal intervals. The sealing box (61) is fixedly connected to a limiting slide rail (613), and the limiting slide rail (613) is slidably connected to a positioning block (63) for inserting into the mounting seat (64).
3. The machine vision-based tea appearance quality inspection device according to claim 2, characterized in that: The mounting base (64) has a through hole, and a movable block (65) is movably connected to the through hole. The positioning block (63) has a groove, and a first spring (632) is fixedly connected in the groove. A limit block (631) is fixedly connected to the upper end of the first spring (632).
4. The machine vision-based tea appearance quality inspection device according to claim 3, characterized in that: The through hole in the mounting base (64) is adapted to the limiting block (631).
5. The machine vision-based tea appearance quality inspection device according to claim 4, characterized in that: The mounting base (64) is internally fixedly connected to a second spring (66), and a fixing plate (67) is fixedly connected to one end of the second spring (66) near the positioning block (63).
6. The machine vision-based tea appearance quality inspection device according to claim 1, characterized in that: The waste bin (68) is provided with several sets of vent holes (69), and a cover plate is detachably installed on the side of the waste bin (68).