Intelligent conveying device and method based on sugar-free tea production

Abstract

The invention discloses an intelligent conveying device and method based on sugar-free tea production, and relates to the technical field of transportation. The invention discloses an intelligent conveying device and method based on sugar-free tea production. The material plate is arranged at the discharging end of the first conveying belt, a rotating part of the second stepping motor is connected with a plurality of rotating plates, the upper surface of one rotating plate and the upper surface of the material plate are located on the same plane, one or more discharging holes are formed in the upper surface of each rotating plate in a penetrating mode, and each discharging hole is matched with a conveying channel of the first conveying belt. The material uniformizing box is placed under the second rotating shaft and connected with the draught fan through the second air box. According to the intelligent conveying device and method based on sugar-free tea production, the discharging device is matched with the roughing device, raw materials containing impurities are transferred into the material uniformizing device, the material uniformizing device blows away the raw materials through wind power and enables the raw materials to be distributed in the horizontal direction, and the fine selecting device is used for guiding and detecting the raw materials.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation, and particularly to an intelligent conveying device and method based on the production of sugar-free tea. Background Art

[0002] The intelligent conveying device for sugar-free tea production is a device applied to the sugar-free tea production line for automatically conveying raw materials, semi-finished products or finished products, which can improve production efficiency, reduce labor costs, and ensure the accuracy and stability of the conveying process.

[0003] Referring to Chinese Patent Publication No.: CN214731788U, a tea leaf planar conveying device with a screening function, which particularly relates to the technical field of tea leaf screening and conveying, includes a frame. One end of the frame is fixedly connected with a base. An empty slot is opened at the top of the base. A filter plate is arranged inside the empty slot. The bottom of the filter plate is fixedly connected with a sleeve. A hole slot is opened inside the sleeve. A hinge block is fixedly connected to the inner wall of the base. A support rod B is slidably connected inside the hole slot, and one end of the support rod B is fixedly connected to the outer wall of the hinge block. A spring is sleeved on the outer wall of the support rod B. By means of the hinge rod, the overall shaking of the cross plate is transmitted, which is convenient for the device to screen out sundries in the tea leaves. By arranging a sleeve at the bottom of the filter plate, the support rod B slides in the hole slot inside the sleeve, avoiding the overall shaking amplitude of the filter plate being too large and damaging the tea leaves on the surface of the filter plate. The shaking force is dispersed by the spring on the outer wall of the support rod B.

[0004] During the production process of tea leaf raw materials, they need to be conveyed multiple times. However, during the conveying process, in most cases, the methods of screening and electrostatic dust removal are used to remove debris, dust, sand, hair, and tea stalks in the tea leaf raw materials or tea leaf semi-finished products. However, the tea leaves are small and are transported in stacks, and it is impossible to quickly and accurately identify the mixed miscellaneous leaves, broken tea, partially or completely charred tea leaves, under-baked tea leaves, etc. in the tea leaves. Subsequently, manual or precise devices are often required to cooperate to pick or grade the tea leaves. For example, in Patent Publication No. CN214731788U, the tea leaves and impurities are separated by vibration, and only the tea leaves and impurities with size differences can be screened, and it is impossible to disperse the aggregated tea leaves and quickly separate the standard tea leaves from the impurities or non-standard tea leaves by shape and color, etc. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an intelligent conveying device and method based on the production of sugar-free tea. The discharging device is matched with the rough selection device to transfer the raw materials containing impurities to the material leveling device. The material leveling device blows the raw materials away by wind and distributes the raw materials horizontally. The fine selection device is used to guide and detect the raw materials.

[0006] Technical solution: To achieve the above object, the present invention is implemented through the following technical solutions: An intelligent conveying device based on the production of sugar-free tea, comprising: a rough selection device for spreading raw materials on a number of conveying channels of a first conveyor belt and identifying the conveying channel where the raw material pile with impurities is located; a discharging device for matching the raw material pile with impurities and dropping it into a material leveling device; the material leveling device for receiving the raw materials dropped by the discharging device and dispersing the raw material pile horizontally by wind power. The discharging device includes: a material plate provided at the discharging end of the first conveyor belt; the rotating part of a second stepping motor is connected with a number of rotating plates, the upper surface of one rotating plate is in the same plane as the upper surface of the material plate, and one or more blanking holes are penetrated through the upper surface of each rotating plate, and each blanking hole is matched with the conveying channel of the first conveyor belt. The material leveling device includes: a material leveling box placed directly below the second rotating shaft, and the material leveling box is connected with a blower through a second air box; a fine selection device for guiding the raw materials dropped by the material leveling device and separating them into a detection channel for detection.

[0007] Preferably, the rough selection device includes: a first stepping motor provided above the bottom plate, the rotating part of the first stepping motor is connected with a first rotating shaft, the side of the first rotating shaft is connected with a number of inclined plates, two of the inclined plates are a group, and the two inclined plates are symmetrically distributed on both sides of the axis of the rotating shaft. A material receiving cavity is provided between the two inclined plates, one end of each inclined plate is connected with an end plate, and both ends of the rotating shaft are connected with side plates. A first camera is provided above one end of the first conveyor belt close to the first stepping motor. The first camera is electrically connected with a controller through a first wire. The first camera is used for taking real-time images of the raw materials on the first conveyor belt and transmitting them to a database. The controller identifies the raw material pile based on color characteristics and shape characteristics and judges the quality of the raw material pile. The first stepping motor is electrically connected with the controller through a second wire, and the distance between adjacent end plates gradually shrinks along the direction of the virtual straight line.

[0008] Preferably, the discharging device further includes: a second rotating shaft, the rotating part of the second stepping motor is connected with the second rotating shaft, the side of the second rotating shaft is connected with a number of rotating plates, the material plate is inclined, and a placing channel is penetrated through the upper surface of the material plate at the end far from the first conveyor belt. Whenever the rotating part of the first stepping motor rotates, one of the rotating plates is located in the placing channel, and the upper surface of the rotating plate is in the same plane as the upper surface of the material plate.

[0009] Preferably, a gap is provided between the rotating plate and the inner wall of the placing channel, the rotating plate does not contact the material plate during rotation, the number of the rotating plates is n, and the rotation unit of the second rotating shaft is 360° / n.

[0010] Preferably, the material leveling device further includes: a first air box disposed above the third conveyor belt. The first air box is connected to the air outlet of the fan through a first pipe. The fixed end of the fan is connected to the top of the bottom plate. The material leveling box is composed of two symmetrically distributed arc plates and side plates at both ends of the arc plates. The material leveling box is connected to the bottom plate through a fixing plate. The two arc plates gradually contract along the direction of the virtual straight line. An air inlet strip is formed through one side of the middle and lower part of one side plate, and the air inlet strip is connected to the second air box. The second air box is connected to the air outlet of the fan through a second pipe. The discharge port of the material leveling box is located directly above the feeding end of the third conveyor belt. A second conveyor belt is disposed above the third conveyor belt.

[0011] Preferably, the first conveyor belt is connected to the bottom plate through a first support plate, the second conveyor belt is connected to the bottom plate through a second support plate. The second conveyor belt has the same width as the third conveyor belt, and the third conveyor belt is also connected to the bottom plate through a second support plate. A plurality of partition plates are disposed on the top of the first conveyor belt, and the partition plates divide the upper surface of the first conveyor belt into a plurality of conveying channels. The upper surface of the second conveyor belt is located below the bottom end of the material plate, and the material plate is used to convey raw materials onto the second conveyor belt. The blanking hole is configured to control the unqualified raw materials on the first conveyor belt to fall into the material leveling box.

[0012] Preferably, the selection device includes: a second camera. Each second camera is electrically connected to the controller through a third wire. The upper surface of the second camera is connected to a top plate. The bottoms of both ends of the top plate are connected to the bottom plate through fourth support plates. The second camera is used to capture pictures of the raw materials on the third conveyor belt in real time and transmit them to the database. A plurality of straight plates are disposed above the third conveyor belt. One end of each straight plate is connected to a wind storage plate through a guiding plate. A wind cavity is formed at the top of each wind storage plate near the guiding plate end. An air hole is formed through the bottom of the first air box, and the air hole is connected to the top of the wind cavity. A blowing hole is formed on one side of each wind storage plate near the guiding plate and the blowing hole is connected to the wind cavity. The bottom of the first air box is connected to the top of the wind storage plate. The blowing hole is disposed at the junction of the guiding plate and the wind storage plate, and the side of the blowing hole close to the guiding plate is parallel to each other.

[0013] Preferably, a plurality of detection channels are disposed above the third conveyor belt. Each detection channel is composed of two channel plates. Each channel plate is composed of the straight plate, the guiding plate, and the wind storage plate. The included angle between the guiding plate and the straight plate is 150°-170°. The width of each detection channel is greater than the width of the raw material, and the raw materials are horizontally transported in the detection channels.

[0014] A conveying method uses an intelligent conveying device based on sugar-free tea production. The raw materials are intermittently scattered in several conveying channels of the first conveyor belt by a rough selection device. After each rotation of the first stepping motor, there is a raw material pile in each conveying channel. The first camera takes real-time pictures of the raw material piles, marks the raw material piles containing impurities as secondary raw material piles according to their colors and shapes, determines the positions of the conveying channels where the secondary raw material piles are located, and controls the rotation of the second rotating shaft and the rotating plate so that the secondary raw materials fall into the material leveling box through the blanking holes. The wind force is used to blow the raw materials piled up in the material leveling box horizontally, so that the raw materials fall evenly into the detection channel. With the assistance of the guide plate and the inclined wind force, a single raw material moves along the detection channel. The second camera takes real-time pictures of the single raw material, marks the impurities and then removes them.

[0015] Beneficial effects: The present invention provides an intelligent conveying device and method based on sugar-free tea production. Compared with the prior art, it has the following beneficial effects: 1. The rough selection device is used to scatter the raw materials on several conveying channels of the first conveyor belt and identify the conveying channels where the raw material piles with impurities are located. The discharging device is used to match the raw material piles with impurities and make them fall into the material leveling device. The material leveling device is used to receive the raw materials falling from the discharging device and disperse the raw material piles horizontally by wind force. The fine selection device is used to guide the raw materials falling from the material leveling device and separate them into the detection channels for detection.

[0016] 2. Since the number of non-conforming raw materials in the raw materials is much smaller than that of normal raw materials, if the raw materials are directly detected one by one, the detection efficiency is low. By dispersing the raw materials into multiple conveying channels for detection, the falling holes on the rotating plate are adapted to the conveying channels containing secondary raw materials, separating the secondary raw materials from the qualified raw materials, and only finely selecting the raw materials in the secondary raw materials, greatly reducing the number of raw materials to be detected and improving the detection efficiency.

[0017] 3. The two guide plates gradually contract along the virtual straight line direction, and the detection channel gradually contracts. Through the mutual sliding of the guide plate and the raw materials and the wind force of the blowing holes, the movement of the raw materials is jointly guided, so that the scattered raw materials are convenient to be placed horizontally and enter the detection channels where the two straight plates are located. And the width of the detection channel where the two straight plates are located is 1.2 - 1.6 times the width of the raw materials. It is difficult for multiple raw materials to enter the detection channel where the two straight plates are located side by side. There is a time interval between adjacent raw materials in the detection channel, which is convenient for removing unqualified raw materials.

[0018] 4. Since the materials are partially piled up in the conveying channels of the first conveyor belt, the raw materials falling from the first conveyor belt will also pile up in the material leveling box. The air inlet strips are located at the lower part of the material leveling box. The wind entering the material leveling box through the air inlet strips can not only effectively blow the raw materials to the horizontal direction of the discharging port, improving the detection efficiency, but also prevent the raw materials from being blown out from the top opening of the material leveling box. Description of the Drawings

[0019] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present application, and together with the specification are further used to explain the principles of the present application and enable those skilled in the relevant art to implement and use the present application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present invention.

[0022] Figure 2 It is Figure 1 A schematic structural diagram after removing the bottom plate and the support plate.

[0023] Figure 3 It is a schematic structural diagram of the first stepping motor, the first rotating shaft, the side plate, and the inclined plate.

[0024] Figure 4 It is a schematic structural diagram of the inclined plate and the end plate.

[0025] Figure 5 It is a schematic structural diagram of the first conveyor belt, the material plate, the arc plate, and the controller.

[0026] Figure 6 It is a schematic structural diagram of the discharging device and the material leveling device.

[0027] Figure 7 It is a schematic structural diagram of the discharging device.

[0028] Figure 8 It is a schematic structural diagram of the second rotating shaft, the connecting plate, and the blanking hole.

[0029] Figure 9 It is a sectional view of one end of the rotating plate, the second rotating shaft, and the connecting plate.

[0030] Figure 10 It is a schematic structural diagram of the material leveling device.

[0031] Figure 11 It is a schematic structural diagram of the sorting device.

[0032] Figure 12 It is a schematic structural diagram of the straight plate, the guide plate, and the air holes.

[0033] Figure 13 It is a schematic structural diagram of the guide plate, the air storage plate, and the first air box.

[0034] Figure 14 is Figure 13 A schematic cross-sectional view of the air storage plate.

[0035] The reference numerals in the figure are: 11, bottom plate; 12, first conveyor belt; 13, second conveyor belt; 14, third conveyor belt; 15, first support plate; 16, second support plate; 17, third support plate; 18, fourth support plate; 19, top plate; 2, controller; 3, rough selection device; 31, first stepping motor; 32, first rotating shaft; 33, side plate; 34, inclined plate; 35, end plate; 36, material receiving cavity; 37, first camera; 38, first wire; 39, second wire; 4, discharging device; 41, second stepping motor; 42, material plate; 43, gap; 44, rotating plate; 45, second rotating shaft; 46, connecting plate; 47, blanking hole; 5, material leveling device; 51, fan; 52, first pipeline; 53, second pipeline; 54, first air box; 55, second air box; 56, arc plate; 57, side plate; 58, air inlet strip; 6, fine selection device; 61, third wire; 62, second camera; 63, straight plate; 64, guiding plate; 65, air hole; 66, air storage plate; 67, air cavity; 68, blowing hole; 7, fourth wire.

[0036] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still within the scope of the appended claims. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0038] To better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0039] Embodiment 1: As Figure 1 - Figure 14As shown in the figure, an embodiment of the present invention provides an intelligent conveying device for sugar-free tea production, including: a rough selection device 3, configured to disperse raw materials on a plurality of conveying channels of a first conveyor belt 12 and identify the conveying channel where the raw material pile with impurities is located; a discharging device 4, configured to match the raw material pile with impurities and let it fall onto a material leveling device 5. The discharging device 4 includes: a material plate 42, the material plate 42 is arranged at the discharging end of the first conveyor belt 12, the rotating part of a second stepping motor 41 is connected with a plurality of rotating plates 44, the upper surface of one rotating plate 44 is in the same plane as the upper surface of the material plate 42, and one or more blanking holes 47 are formed through the upper surface of each rotating plate 44, and each blanking hole 47 is matched with the conveying channel of the first conveyor belt 12; a fine selection device 6, configured to guide the raw materials falling from the material leveling device 5 and separate them into detection channels for detection.

[0040] The rough selection device 3 includes: a first stepping motor 31, the first stepping motor 31 is arranged above a bottom plate 11, the rotating part of the first stepping motor 31 is connected with a first rotating shaft 32, the side surface of the first rotating shaft 32 is connected with a plurality of inclined plates 34, two inclined plates 34 form a group, and the two inclined plates 34 are symmetrically distributed on both sides of the axis of the rotating shaft. A material receiving cavity 36 is arranged between the two inclined plates 34. One end of each inclined plate 34 is connected with an end plate 35, and both ends of the rotating shaft are connected with side plates 33. Above one end of the first conveyor belt 12 close to the first stepping motor 31, a first camera 37 is arranged. The first camera 37 is electrically connected with a controller 2 through a first wire 38. The first camera 37 is configured to take pictures of the raw materials on the first conveyor belt 12 in real time and transmit them to a database. The controller 2 identifies the raw material piles based on color features and shape features and judges the quality of the raw material piles. The first stepping motor 31 is electrically connected with the controller 2 through a second wire 39. The distance between adjacent end plates 35 gradually shrinks along the direction of the virtual straight line.

[0041] The discharging device 4 further includes: a second rotating shaft 45, the rotating part of the second stepping motor 41 is connected with the second rotating shaft 45, the side surface of the second rotating shaft 45 is connected with a plurality of rotating plates 44, the material plate 42 is inclined, and a placing channel is formed through the upper surface of the material plate 42 at the end far from the first conveyor belt 12. Whenever the rotating part of the first stepping motor 31 rotates, one rotating plate 44 is located in the placing channel, and the upper surface of the rotating plate 44 is in the same plane as the upper surface of the material plate 42.

[0042] A gap 43 is arranged between the rotating plate 44 and the inner wall of the placing channel. The rotating plate 44 does not contact the material plate 42 during the rotation process. The number of rotating plates 44 is n, and the rotation unit of the second rotating shaft 45 is 360° / n.

[0043] Since the highest point of the rotating plate 44 will cross over the material plate 42, a gap 43 is provided between the rotating plate 44 and the inner wall of the placing channel. The gap 43 is equivalent to a safety distance to prevent the material plate 42 from contacting the rotating plate 44. However, to prevent the raw materials from leaking out through the gap 43, the width of the gap 43 should not be too large. The width of the gap 43 is usually one-third to four-fifths of the width of the tea leaves.

[0044] The number of rotating units is adapted to the number of rotating plates 44 to ensure that after each rotation of the second rotating shaft 45, one rotating plate 44 rotates into the placing channel.

[0045] The first conveyor belt 12 is connected to the bottom plate 11 through the first support plate 15. The second conveyor belt 13 is connected to the bottom plate 11 through the second support plate 16. The second conveyor belt 13 has the same width as the third conveyor belt 14, and the third conveyor belt 14 is also connected to the bottom plate 11 through the second support plate 16. A number of partition plates are provided on the top of the first conveyor belt 12, and the partition plates divide the upper surface of the first conveyor belt 12 into several conveying channels. The upper surface of the second conveyor belt 13 is located below the bottom end of the material plate 42, and the material plate 42 is used to convey the raw materials onto the second conveyor belt 13. The blanking hole 47 is provided to control the falling of the non-standard raw material piles on the first conveyor belt 12 into the material leveling box.

[0046] The selection device 6 includes: a second camera 62. Each second camera 62 is electrically connected to the controller 2 through a third wire 61. The upper surface of the second camera 62 is connected to a top plate 19. The bottoms of both ends of the top plate 19 are connected to the bottom plate 11 through the fourth support plates 18. The second camera 62 is used to take pictures of the raw materials on the third conveyor belt 14 in real time and transmit them to the database. A number of straight plates 63 are provided above the third conveyor belt 14. One end of each straight plate 63 is connected to a wind storage plate 66 through a guide plate 64. A wind cavity 67 is opened at the top of each wind storage plate 66 near one end of the guide plate 64. A wind hole 65 is opened through the bottom of the first wind box 54, and the wind hole 65 is connected to the top of the wind cavity 67. A blowing hole 6865 is opened on one side of each wind storage plate 66 near the guide plate 64 and the blowing hole 6865 is connected to the wind cavity 67. The bottom of the first wind box 54 is connected to the top of the wind storage plate 66.

[0047] The first camera 37 operates in the same way as the second camera 62, that is, taking pictures and transmitting them to the database, and Both the first camera 37 and the second camera 62 select high-resolution industrial cameras (such as 5-megapixel global shutter cameras), enable continuous capture of the video stream, and cooperate with a timer or a trigger signal to intercept key frames. The parameters for image acquisition are as follows: the resolution is ≥1280×720 pixels to ensure that the details of the tea leaves are distinguishable (the physical size corresponding to a single pixel ≤0.1 mm), the frame rate is 10-20 FPS (adjusted according to the conveyor belt speed to ensure that each tea leaf stays in the field of view for ≥2 frames), and the color space captures RGB-format images for subsequent color feature analysis. The original image data of the first camera 37 and the second camera 62 are directly transmitted to the controller 2 through the interface, and the color features and shape features in the images are extracted to determine the qualified range of the raw materials. For example, the qualified range for green tea is H∈[35°, 85°], S∈[0.2, 0.8], V∈[0.3, 0.9]. The RGB values or the hue (H) and saturation (S) in the HSV color space are extracted and it is judged whether they are within the qualified range. The extraction of shape features includes: Area: The area of qualified tea leaves should be within a specific range (such as 20-200 mm², which needs to be adjusted according to the tea variety).

[0048] Perimeter: Used to calculate the contour complexity, and the perimeter of damaged tea leaves is usually irregular.

[0049] Aspect ratio: The ratio of the long axis to the short axis, used to distinguish between whole leaves and broken leaves (such as the aspect ratio of qualified leaves is 1.5-3.0).

[0050] Convex hull defect: Detect the notches or breaks at the leaf edges.

[0051] Hu moments: 7 invariant moment features, used to distinguish tea leaves from non-tea foreign objects (such as stones, metal chips).

[0052] Fourier descriptors: Identify whether the leaf shape is complete through the contour frequency domain features.

[0053] Based on the color features and shape features, it is judged whether the raw materials meet the standards, and the raw materials on the first conveyor belt 12 that contain impurities and are not within the qualified range are marked as secondary raw materials.

[0054] Above the third conveyor belt 14, several groups of detection channels are provided. Each detection channel is composed of two channel plates, and each channel plate is composed of a straight plate 63, a guiding plate 64, and a wind storage plate 66. The included angle between the guiding plate 64 and the straight plate 63 is 150°-170°, and the width of each detection channel is greater than the width of the raw materials. The raw materials are horizontally transported in the detection channels.

[0055] The included angle between the wire board and the straight board 63 is 150°. The gap 43 between the two guide boards 64 is large, and the inclination of the guide board 64 is large, which is convenient for guiding a single raw material to enter the detection channel where the two straight boards 63 are located after being placed horizontally.

[0056] The included angle between the wire board and the straight board 63 is 170°. The gap 43 between the two guide boards 64 is small, and the inclination of the guide board 64 is large. The floor area occupied by the two guide boards 64 is small, and more guide boards 64 can be distributed on the third guide rail.

[0057] During use, the first stepping motor 31 is started. The rotating part of the first stepping motor 31 drives the inclined plate 34 and the end plate 35 through the first rotating shaft 32. The raw material enters the receiving cavity 36 at the top of the rotating shaft and rotates and is poured onto the first conveyor belt 12. Through the lengthened inclined plate 34, the raw material is scattered on the first conveyor belt 12 as much as possible along the horizontal direction. The partition divides the upper surface of the first conveyor belt 12 into several conveying channels. Each conveying channel has a small pile of raw materials. The image of the raw material pile is obtained in real time by the first camera 37 and transmitted to the controller 2. The controller 2 judges whether there are impurities (weeds, leaves, tea stalks, old leaves, sand particles, etc.) and unqualified raw materials (for example: broken leaves, burnt leaves, deformed leaves) in the raw material pile based on color features and shape features, marks the raw materials containing impurities and not meeting the standards as secondary raw materials, and determines the conveying channel where the secondary raw materials are located. Each rotating plate 44 is provided with a blanking hole 47 penetrating through it. If the blanking hole 47 is directly opposite to a conveying channel, then the blanking hole 47 (and the rotating plate 44) is adapted to this conveying channel. After the controller 2 controls the second stepping motor 41 to rotate one or more rotation units, the rotating plate 44 adapted to the conveying channel rotates into the placement channel, and the upper surface of the rotating plate 44 and the upper surface of the material plate 42 are on the same plane, which is convenient for the raw material to slide along the material plate 42 and the rotating plate 44.

[0058] Because the number of raw materials that do not meet the standards in the raw materials is much smaller than the number of normal raw materials, if the raw materials are directly detected individually, the detection efficiency is low. The falling holes on the rotating plate 44 are adapted to the conveying channels containing secondary raw materials, separating the secondary raw materials from the qualified raw materials, and only selecting the raw materials in the secondary raw materials, greatly reducing the number of raw materials to be detected and improving the detection efficiency.

[0059] Since the raw materials of the same batch are scattered in multiple conveying channels at the same time, there may be situations where there are no secondary raw materials, one secondary raw material, or multiple secondary raw materials. When there are multiple secondary raw materials, a rotating plate 44 with multiple blanking holes 47 can be adapted. In order to avoid too many rotating plates 44 and too long rotation time, the number of conveying channels should not be too many, and it is preferably maintained at 4 - 8 conveying channels.

[0060] The raw materials slide to the discharge hole through the material plate 42 and fall onto the detection channel on the third conveyor belt 14. The two guide plates 64 are symmetrically distributed. The two guide plates 64 gradually contract along the virtual straight line direction, and the width of the channel formed by the two guide plates 64 gradually decreases, which is convenient for guiding the raw materials to change from scattered placement to horizontal placement. Moreover, the width of the detection channel where the two straight plates 63 are located is 1.2 - 1.6 times the width of the raw materials, and the width of the detection channel where the two straight plates 63 are located is less than the length of the raw materials. It is difficult for multiple raw materials to enter the detection channel where the two straight plates 63 are located side by side. There is a time interval between adjacent raw materials in the detection channel. When the raw materials move with the third conveyor belt, the raw materials slide relative to the guide plate 64, which is convenient for guiding the raw materials to be placed horizontally and enter the detection channel where the two straight plates 63 are located; the air from the air outlet of the blower 51 blows out through the first pipe 52, the first air box 54, the air holes 65, the air cavity 67, and the blowing holes 6865. Since the blowing holes 6865 are arranged at the junction of the guide plate 64 and the air storage plate 66, and the side of the blowing holes 6865 close to the guide plate 64 is parallel to each other, the air from the blowing holes 6865 blows towards the detection channel along the direction of the guide plate 64. The air can also assist the guide plate 64 in guiding the raw materials. The air blows the raw materials and gives the raw materials the power to move along the detection channel, so that some of the raw materials stuck in the detection channel where the two guide plates 64 are located can enter the detection channel where the two straight plates 63 are located.

[0061] The second camera 62 obtains the image of the raw material pile in real time and transmits it to the controller 2. The raw materials containing impurities and not meeting the standards are marked as rejected raw materials, and the detection channel where the rejected raw materials are located is determined. The rejected raw materials can be taken out through the discharging device or the manipulator or manually, completing the selection work of the raw materials and improving the quality of the products.

[0062] This device can be applied to each conveying process of adjacent steps in the production of sugar-free tea raw materials, completing the screening and rejection work of sugar-free tea raw materials during the conveying process of sugar-free tea raw materials, and is applicable to large-scale production.

[0063] Embodiment 2: As Figure 1 - Figure 14 shown, an embodiment of the present invention provides an intelligent conveying device based on sugar-free tea production, including: a material leveling device 5, which is used to receive the raw materials falling from the discharging device 4 and disperse the raw material pile horizontally by wind force. The material leveling device 5 includes: a material leveling box, which is placed directly below the second rotating shaft 45, and the material leveling box is connected to the blower 51 through the second air box 55.

[0064] The material leveling device 5 further includes: a first air box 54, which is arranged above the third conveyor belt 14. The first air box 54 is connected to the air outlet of the fan 51 through a first pipeline 52. The fixed end of the fan 51 is connected to the top of the bottom plate 11. The material leveling box is composed of two symmetrically distributed arc plates 56 and side plates 57 at both ends of the arc plates 56. The material leveling box is connected to the bottom plate 11 through a fixing plate. The two arc plates 56 gradually contract along the direction of the virtual straight line. An air inlet strip 58 is penetrated and opened on one side of the middle and lower part of one side plate 57. The air inlet strip 58 is connected to the second air box 55. The second air box 55 is connected to the air outlet of the fan 51 through a second pipeline 53. The discharge port of the material leveling box is located directly above the feeding end of the third conveyor belt 14. A second conveyor belt 13 is arranged above the third conveyor belt 14.

[0065] A conveying method uses an intelligent conveying device based on the production of sugar-free tea. The raw materials are intermittently scattered in several conveying channels of the first conveyor belt 12 by the rough selection device 3. After each rotation of the first stepping motor 31, there are raw material piles in each conveying channel. The first camera 37 takes real-time pictures of the raw material piles, and marks the raw material piles containing impurities as secondary raw material piles by color and shape. Determine the position of the conveying channel where the secondary raw material pile is located and control the rotation of the second rotating shaft 45 and the rotating plate 44, so that the secondary raw materials fall into the material leveling box from the blanking hole 47. Use the wind force to blow the raw materials piled up in the material leveling box horizontally, so that the raw materials fall evenly into the detection channel. With the assistance of the guiding plate 64 and the inclined wind force, a single raw material moves along the detection channel. Use the second camera 62 to take real-time pictures of a single raw material and mark and remove the impurities.

[0066] During use, by arranging the material leveling device 5 between the discharging device 4 and the fine selection device 6, the raw materials falling from the blanking hole 47 do not directly fall on the third conveyor belt 14, but first pass through the material leveling device 5 before falling on the third conveyor belt 14. Since the materials are partially piled up in the conveying channels of the first conveyor belt 12, the raw materials falling from the first conveyor belt 12 will also pile up in the material leveling box. If the raw materials on the third conveyor belt 14 are evenly distributed horizontally, it is convenient for the raw materials to enter the detection channel horizontally, improving the detection efficiency. However, the raw materials falling from the material leveling box also need to be scattered more evenly horizontally on the third conveyor belt 14, which requires that the raw materials in the material leveling box cannot be piled up at one point, but need to be spread out horizontally along the discharge port. The air from the air outlet of the fan 51 is sequentially transmitted to the second pipeline 53, the second air box 55, the air inlet strip 58, and the material leveling box. The air inlet strip 58 is located at the lower part of the material leveling box, which can not only effectively blow the raw materials to the horizontal direction of the discharge port, but also prevent the raw materials from being blown out from the top opening of the material leveling box. The material leveling box makes the raw materials fall on the third conveyor belt 14 horizontally, improving the detection efficiency.

[0067] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the essence and scope of the present invention. To enable the public to have a thorough understanding of the present invention, specific details have been described in detail in the above preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details. Additionally, well-known methods, processes, procedures, components, and circuits, etc. have not been described in detail to avoid unnecessary confusion to the essence of the present invention.

[0068] The above description is only a preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An intelligent conveying device based on the production of sugar-free tea, characterized in that, Including: A rough selection device (3) for spreading raw materials on a number of conveying channels of a first conveyor belt (12) and identifying the conveying channel where the raw material pile with impurities is located; A discharging device (4) for matching the raw material pile with impurities and dropping it into a material leveling device (5). The material leveling device (5) is used to receive the raw materials dropped by the discharging device (4) and disperse the raw material pile horizontally by wind force. The discharging device (4) includes: a material plate (42). The material plate (42) is arranged at the discharging end of the first conveyor belt. The rotating part of a second stepping motor (41) is connected with a number of rotating plates (44). The upper surface of one rotating plate (44) is in the same plane as the upper surface of the material plate (42). One or more material dropping holes (47) are formed through the upper surface of each rotating plate (44). Each material dropping hole (47) is matched with the conveying channel of the first conveyor belt (12). The material leveling device (5) includes: a material leveling box. The material leveling box is placed directly below a second rotating shaft (45). The material leveling box is connected with a blower (51) through a second air box (55); A fine selection device (6) for guiding the raw materials dropped by the material leveling device (5) and separating them into detection channels for detection.

2. The intelligent conveying device based on the production of sugar-free tea according to claim 1, characterized in that The rough selection device (3) includes: a first stepping motor (31). The first stepping motor (31) is arranged above a bottom plate (11). The rotating part of the first stepping motor (31) is connected with a first rotating shaft (32). The side of the first rotating shaft (32) is connected with a number of inclined plates (34). Two of the inclined plates (34) form a group. The two inclined plates (34) are symmetrically distributed on both sides of the axis of the rotating shaft. A material receiving cavity (36) is arranged between the two inclined plates (34). One end of each inclined plate (34) is connected with an end plate (35). Both ends of the rotating shaft are connected with side plates (33). A first camera (37) is arranged above one end of the first conveyor belt (12) close to the first stepping motor (31). The first camera (37) is electrically connected with a controller (2) through a first wire (38). The first camera (37) is used to capture images of the raw materials on the first conveyor belt (12) in real time and transmit them to a database. The controller (2) identifies the raw material pile based on color features and shape features and judges the quality of the raw material pile. The first stepping motor (31) is electrically connected with the controller (2) through a second wire (39). The distance between adjacent end plates (35) gradually shrinks along the direction of the virtual straight line.

3. The intelligent conveying device based on sugar-free tea production according to claim 2, wherein, The discharging device (4) further includes: a second rotating shaft (45), the rotating part of the second stepping motor (41) is connected to the second rotating shaft (45), several rotating plates (44) are connected to the side surface of the second rotating shaft (45), the material plate (42) is inclined, a placement channel is penetrated and opened on the upper surface of the material plate (42) at the end far from the first conveyor belt. Whenever the rotating part of the first stepping motor (31) rotates, one of the rotating plates (44) is located in the placement channel, and the upper surface of the rotating plate (44) is on the same plane as the upper surface of the material plate (42).

4. The intelligent conveying device based on sugar-free tea production according to claim 3, characterized in that: A gap (43) is provided between the rotating plate (44) and the inner wall of the placement channel. The rotating plate (44) does not contact the material plate (42) during the rotation process. The number of the rotating plates (44) is n, and the rotation unit of the second rotating shaft (45) is 360° / n.

5. The intelligent conveying device based on sugar-free tea production according to claim 3, characterized in that The material leveling device (5) further includes: a first air box (54), the first air box (54) is arranged above the third conveyor belt (14), the first air box (54) is communicated with the air outlet of the fan (51) through a first pipeline (52), the fixed end of the fan (51) is connected to the top of the bottom plate (11). The material leveling box is composed of two symmetrically distributed arc plates (56) and side plates (57) at both ends of the arc plates (56). The material leveling box is connected to the bottom plate (11) through a fixing plate. The two arc plates (56) gradually contract along the direction of the virtual straight line. An air inlet strip (58) is penetrated and opened on one side of the middle and lower part of one side plate (57). The air inlet strip (58) is communicated with the second air box (55). The second air box (55) is communicated with the air outlet of the fan (51) through a second pipeline (53). The discharge port of the material leveling box is directly above the feeding end of the third conveyor belt (14). A second conveyor belt (13) is arranged above the third conveyor belt (14).

6. The intelligent conveying device based on sugar-free tea production according to claim 5, wherein: The first conveyor belt (12) is connected to the bottom plate (11) through a first support plate (15), the second conveyor belt (13) is connected to the bottom plate (11) through a second support plate (16). The second conveyor belt (13) has the same width as the third conveyor belt (14). The third conveyor belt (14) is also connected to the bottom plate (11) through a second support plate (16). Several partition plates are arranged on the top of the first conveyor belt (12). The partition plates divide the upper surface of the first conveyor belt (12) into several conveying channels. The upper surface of the second conveyor belt (13) is below the bottom end of the material plate (42). The material plate (42) is used to convey the raw materials onto the second conveyor belt (13). The blanking hole (47) is arranged to control the non-standard raw material piles on the first conveyor belt (12) to fall into the material leveling box.

7. The intelligent conveying device based on the production of sugar-free tea according to claim 5, characterized in that, The selected device (6) includes: a second camera (62), each second camera (62) is electrically connected to the controller (2) through a third wire (61), a top plate (19) is connected to the upper surface of the second camera (62), and both ends of the bottom of the top plate (19) are connected to the bottom plate (11) through fourth support plates (18). The second camera (62) is used to capture pictures of the raw materials on the third conveyor belt (14) in real time and transmit them to the database. Above the third conveyor belt (14), there are several straight plates (63). One end of each straight plate (63) is connected to a wind storage plate (66) through a guide plate (64). At the top of one end of each wind storage plate (66) close to the guide plate (64), there is a wind cavity (67). A wind hole (65) is opened through the bottom of the first wind box (54), and the wind hole (65) is communicated with the top of the wind cavity (67). On one side of each wind storage plate (66) close to the guide plate (64), there are blowing holes (68) (65) and the blowing holes (68) (65) are communicated with the wind cavity (67). The bottom of the first wind box (54) is connected to the top of the wind storage plate (66). The blowing holes (68) (65) are arranged at the junction of the guide plate (64) and the wind storage plate (66), and the sides of the blowing holes (68) (65) close to the guide plate (64) are parallel to each other.

8. The intelligent conveying device based on sugar-free tea production according to claim 7, characterized in that: Above the third conveyor belt (14), there are several groups of detection channels. Each detection channel is composed of two channel plates, and each channel plate is composed of the straight plate (63), the guide plate (64), and the wind storage plate (66). The included angle between the guide plate (64) and the straight plate (63) is 150° - 170°. The width of each detection channel is greater than the width of the raw material, and the raw materials are horizontally transported in the detection channels.

9. A conveying method, which uses the intelligent conveying device based on the production of sugar-free tea according to any one of claims 1-8, characterized in that: The raw materials are intermittently scattered in several conveying channels of the first conveyor belt by the rough selection device (3). After each rotation of the first stepping motor (31), there are raw material piles in each conveying channel. The first camera (37) captures pictures of the raw material piles in real time, marks the raw material piles containing impurities as secondary raw material piles by color and shape, determines the positions of the conveying channels where the secondary raw material piles are located, and controls the rotation of the second rotating shaft (45) and the rotating plate (44) so that the secondary raw materials fall into the material leveling box from the blanking hole (47). The raw materials piled up in the material leveling box are blown apart horizontally by the action of wind, so that the raw materials fall evenly into the detection channels. With the assistance of the guide plate (64) and the inclined wind force, the single raw materials move along the detection channels. The second camera (62) captures pictures of the single raw materials in real time, marks the impurities, and then removes them.

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