Transmission type intelligent dry separator

Abstract

The utility model relates to the technical field of coal mine separation, in particular to a transmission type intelligent dry separator. The transmission type intelligent dry separator comprises a conveying belt, a camera, a light source and an identification system, the conveying belt is a light-transmitting belt and used for conveying minerals to be separated, the camera is located on the upper side of the conveying belt, the position, corresponding to the camera, of the conveying belt is an identification area, and the light source is located in the identification area. The camera is used for shooting an image of the identification area. The camera is arranged above the conveying belt, the first light source is located below the recognition area and is opposite to the camera, the conveying belt is a light-transmitting belt, so that light of the first light source penetrates through the conveying belt to light minerals to be sorted in the recognition area on the conveying belt, and the camera shoots the minerals to be sorted in the recognition area; the recognition system receives the image shot by the camera and obtains the light transmittance of each mineral to be sorted from the image, and the discrimination degree is higher.

Description

Technical Field

[0001] This utility model relates to the field of coal mine sorting technology, specifically to a transmission-type intelligent dry separator. Background Technology

[0002] In mineral sorting, some concentrates and tailings have little color differentiation, and minerals need to be crushed to below 7mm for full liberation before sorting.

[0003] Currently, intelligent dry separators are commonly used for mineral sorting. Intelligent dry separators employing image recognition include a feeding system, a material distribution system, a conveyor belt, a recognition system, and an execution system. The recognition system comprises a recognition device, a camera, and a light source. Since it sorts minerals by recognizing their color and texture, color recognition is achieved by emitting light from the light source. The light shines onto the minerals, and the minerals' reflectivity is utilized. Therefore, both the camera and the light source are located above the conveyor belt, with the distance from the camera to the conveyor belt greater than the distance from the light source to the conveyor belt. The position on the conveyor belt corresponding to the camera's image is the recognition zone, and the light source is located to one side of the recognition zone. The camera captures images of the minerals in the recognition zone. Based on the color and texture of each mineral obtained from the image, the execution system compares and sorts them, thus achieving mineral classification.

[0004] Because the smaller the size, the more difficult it is to identify the texture, and the more similar the colors, the lower the identification efficiency and accuracy. Therefore, the identification methods in intelligent dry separators mentioned above have low discrimination and identification accuracy when sorting minerals with small color differences and small size. Utility Model Content

[0005] (I) The problem to be solved by this utility model is: how to improve the differentiation and identification accuracy of small-sized minerals with similar colors.

[0006] (II) Technical Solution

[0007] This utility model provides a transmission-type intelligent dry separator, which includes a conveyor belt, a camera, a light source, and a recognition system;

[0008] The conveyor belt is a light-transmitting belt, and the conveyor belt is used to transport the minerals to be sorted;

[0009] The camera is located on the upper side of the conveyor belt, and the position on the conveyor belt corresponding to the camera is a recognition area. The camera is used to capture images of the recognition area.

[0010] The light source includes at least a first light source, which is located below the recognition area and opposite to the camera.

[0011] The identification system is connected to the camera signal and is used to receive images captured by the camera and obtain the light transmittance of each mineral to be sorted in the image.

[0012] According to one embodiment of the present invention, the conveyor belt is ring-shaped, and an accommodating space is formed inside the conveyor belt, wherein the first light source is located within the accommodating space.

[0013] The light source also includes a second light source, which is located above the recognition area.

[0014] According to one embodiment of the present invention, the transmission-type intelligent dry separator further includes a cleaning device for cleaning dirt on the bearing surface of the conveyor belt.

[0015] According to one embodiment of the present invention, the transmission-type intelligent dry separator further includes a frame, and multiple cameras are provided, with the multiple cameras arranged at intervals along the width direction of the conveyor belt.

[0016] The light source, the conveyor belt, and the multiple cameras are all mounted on the frame.

[0017] According to one embodiment of the present invention, the cleaning device is located under the conveyor belt.

[0018] According to one embodiment of the present invention, the cleaning device includes a brush and a first drive assembly;

[0019] The brush contacts the bearing surface of the conveyor belt, and the first driving component is used to drive the brush to rotate along its axial direction.

[0020] According to one embodiment of the present invention, the cleaning device includes a high-pressure air duct and a blower head connected in series;

[0021] The air outlet of the blower head is positioned facing the bearing surface of the conveyor belt.

[0022] According to one embodiment of the present invention, the transmission-type intelligent dry separator further includes a cleaning device, which includes a water supply pipe and a nozzle connected in series.

[0023] The nozzle of the spray head is positioned facing the bearing surface of the conveyor belt.

[0024] According to one embodiment of the present invention, the conveyor belt is a colorless, light-transmitting belt.

[0025] The beneficial effects of this utility model are:

[0026] The camera is positioned above the conveyor belt, and the first light source is located below the recognition area and is positioned vertically opposite to the camera. Since the conveyor belt is a light-transmitting belt, the light from the first light source can pass through the conveyor belt to illuminate the minerals to be sorted in the recognition area on the conveyor belt. The camera takes pictures of the minerals to be sorted in the recognition area. The recognition system receives the images taken by the camera and obtains the light transmittance of each mineral to be sorted from the images. The differentiation is higher, which is different from the traditional differentiation method based on color recognition. The recognition efficiency and accuracy are higher. Attached Figure Description

[0027] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0028] Figure 1 A front view schematic diagram of a transmission-type intelligent dry separator provided in an embodiment of this utility model;

[0029] Figure 2 A front view of the transmission-type intelligent dry separator removal execution system, feeding device, and cloth-laying device provided in an embodiment of this utility model;

[0030] Figure 3 A perspective view of the transmission-type intelligent dry separator removal execution system, feeding device, and material distribution device provided for an embodiment of this utility model;

[0031] Figure 4 Cross-sectional view of the transmission-type intelligent dry separator removal execution system, feeding device, and cloth-laying device provided in an embodiment of this utility model;

[0032] Figure 5 Provided for the embodiments of this utility model Figure 4 Enlarged view of section A;

[0033] Figure 6 Provided for the embodiments of this utility model Figure 4 Enlarged view of section B;

[0034] Figure 7 A schematic diagram showing the positional relationship of the camera, first light source, cleaning device, sweeping device, and conveyor belt in a transmission-type intelligent dry separator provided in an embodiment of this utility model.

[0035] Icons: 1. Conveyor belt; 2. Camera; 3. Light source; 4. Cleaning device; 401. Brush; 402. High-pressure air duct; 403. Air blower head; 5. Air nozzle; 6. Second drive assembly; 601. Throwing roller; 602. Driving roller; 603. Driven roller; 604. Support roller; 605. Second motor; 7. Cleaning device; 701. Water supply pipe; 702. Spray nozzle; 8. Frame; 9. Feeding device; 10. Fabric spreading device. Detailed Implementation

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] like Figures 1-7 As shown, one embodiment of this utility model provides a transmission-type intelligent dry separator, including a conveyor belt 1, a camera 2, a light source, and a recognition system;

[0038] Conveyor belt 1 is a light-transmitting belt, and conveyor belt 1 is used to transport minerals to be sorted;

[0039] Camera 2 is located on the upper side of conveyor belt 1. The position on conveyor belt 1 corresponding to the position of camera 2 is the recognition area. Camera 2 is used to capture images of the recognition area.

[0040] The light source includes at least a first light source 3, which is located below the recognition area and opposite to the camera 2.

[0041] The identification system is connected to camera 2 to receive images captured by camera 2 and to obtain the transmittance of each mineral to be sorted in the image.

[0042] Camera 2 is positioned above conveyor belt 1, and first light source 3 is located below the identification area and opposite to camera 2. Since conveyor belt 1 is a light-transmitting belt, the light from first light source 3 can pass through conveyor belt 1 to illuminate the minerals to be sorted in the identification area on conveyor belt 1. Camera 2 takes pictures of the minerals to be sorted in the identification area. The identification system receives the images taken by camera 2 and obtains the light transmittance of each mineral to be sorted from the images. The differentiation is higher, which is different from the traditional differentiation method based on color recognition. The identification efficiency and accuracy are higher.

[0043] The concentrate is transparent due to its high purity, while the tailings are white or other colors. When the tailings and concentrate are similar in color, such as potassium feldspar in the tailings and silica in the concentrate, the potassium feldspar appears light white with a slight yellow tint, while the silica is more transparent. When the light source shines on the potassium feldspar and silica through the conveyor belt 1, the camera 2 captures the corresponding images. The silica will appear light-colored, while the opaque mineral particles will appear black. The differentiation is much higher than that of traditional intelligent dry separators that classify based on color.

[0044] Traditional color sorters identify minerals after they are thrown off the conveyor belt. However, the minerals are unstable and prone to rotation. During rotation, the light transmittance of the minerals obtained by the color sorter differs significantly between the thinner and thicker surfaces, resulting in low identification accuracy. In this embodiment, however, identification is performed during the transport process on the conveyor belt 1. Each mineral has a stable posture and passes smoothly through the identification area on the conveyor belt 1, thus achieving higher identification accuracy.

[0045] Preferably, conveyor belt 1 is a colorless, light-transmitting belt; optionally, conveyor belt 1 is a light-colored, light-transmitting belt. Conveyor belt 1 is preferably made of polyurethane material for easy cleaning.

[0046] According to one embodiment of the present invention, the conveyor belt 1 is annular, and an accommodating space is formed inside the conveyor belt 1, within which the first light source 3 is located. The first light source 3 being located within the accommodating space allows for better lighting performance.

[0047] According to one embodiment of the present invention, the light source further includes a second light source, which is located above the recognition area.

[0048] Preferred, such as Figure 4 As shown, at least two cameras 2 are provided along the length of the conveyor belt 1. The first light source 3 corresponds to one of the cameras 2, enabling the identification system to obtain the light transmittance of the mineral to be sorted. The second light source corresponds to the other camera 2, enabling the identification system to obtain the color of the mineral to be sorted. By obtaining the color and light transmittance of the mineral to be sorted, the system can achieve higher differentiation and better identification accuracy.

[0049] Optionally, the first light source 3, the second light source, and the camera 2 are in one-to-one correspondence and can be turned on simultaneously, so that the recognition system can simultaneously obtain the color and transmittance of the mineral to be sorted in the image captured by the camera 2. Alternatively, depending on the mineral to be sorted, only the first light source 3 or the second light source can be turned on, and the recognition system can obtain the transmittance or color of the mineral to be sorted in the image captured by the camera 2.

[0050] According to one embodiment of the present invention, such as Figure 4 and Figure 5 As shown, the transmission-type intelligent dry separator also includes a cleaning device 4, which is used to clean dirt on the bearing surface of the conveyor belt 1.

[0051] The cleaning device 4 can clean the bearing surface of the conveyor belt 1 to prevent the conveyor belt 1 from being too dirty and affecting the actual light transmittance of the minerals to be sorted.

[0052] According to one embodiment of the present invention, the cleaning device 4 is located under the conveyor belt 1.

[0053] Of course, in this embodiment, the cleaning device 4 can also be located in other positions. For example, the cleaning device 4 can be located on one side of the feed end of the conveyor belt 1, as long as it can play a cleaning role without affecting the transportation and sorting of minerals.

[0054] According to one embodiment of the present invention, the transmission type intelligent dry separator also includes a frame 8, and multiple cameras 2 are provided, with the multiple cameras 2 arranged at intervals along the width direction of the conveyor belt 1.

[0055] The light source, conveyor belt 1, and multiple cameras 2 are all mounted on the frame 8.

[0056] The frame 8 includes a base frame, a first connecting frame and a second connecting frame. The conveyor belt 1 is located on the base frame, the camera 2 is fixed on the first connecting frame, and the light source is fixed on the second connecting frame.

[0057] It should be noted that in order to transport and sort more minerals and improve work efficiency, the conveyor belt 1 is wider. Multiple cameras 2 are arranged at intervals along the width of the conveyor belt 1, so that the minerals to be sorted can be photographed every time they pass through the recognition area of ​​the conveyor belt 1 without affecting the clarity of the captured images, thus preventing missed sorting and improving the sorting effect.

[0058] The frame 8 is provided with a second drive assembly 6, which includes a second motor 605, a throwing roller 601, a driving roller 602, a driven roller 603, and a support roller 604.

[0059] The active roller 602, the throwing roller 601, and the driven roller 603 are all in contact with the support surface of the conveyor belt 1 to support the conveyor belt 1. The support roller 604 is located on the lower side of the conveyor belt 1, and the side of the support roller 604 is in contact with the bearing surface of the conveyor belt 1. The active roller 602, the throwing roller 601, and the driven roller 603 are all connected by the conveyor belt 1. The distance from the driven roller 603 to the ground is less than the distance from the active roller 602 to the ground, so that the accommodating space has enough space to accommodate the first light source 3.

[0060] Since the smaller the diameter of the throwing roller 601, the greater the centrifugal force, the diameter of the throwing roller 601 is no more than 80mm, which can more smoothly throw out the minerals to be sorted.

[0061] By setting multiple support rollers 604, the conveyor belt 1 from the nozzle 702 to the drive roller 602 is inclined relative to the horizontal plane. The end of the conveyor belt 1 closer to the drive roller 602 is lower than the other end. The water sprayed from the nozzle 702 is less likely to flow to the location of the brush 401, reducing the probability of interference with the cleaning of the brush 401.

[0062] The output end of the second motor 605 is fixedly connected to the drive roller 602, and the fixed end of the second motor 605 is fixedly connected to the frame 8. The second motor 605 drives the drive roller 602, which is fixedly connected to its output end, to rotate, thereby enabling the conveyor belt 1 to move and transport the minerals to be sorted.

[0063] According to one embodiment of the present invention, such as Figure 4 As shown, the cleaning device 4 includes a brush 401 and a first drive assembly;

[0064] The brush 401 contacts the bearing surface of the conveyor belt 1, and the first drive assembly is used to drive the brush 401 to rotate along its axial direction.

[0065] The first drive assembly includes a first motor, a first connecting shaft, and two first bearing seats. The fixed end of the first motor is fixedly connected to the frame 8, and the output end of the first motor is fixedly connected to the first connecting shaft. The brush 401 is fixedly mounted on the first connecting shaft. When the first motor rotates, it drives the first connecting shaft fixedly connected to its output end to rotate, which in turn drives the brush 401 to rotate, thus cleaning the bearing surface of the conveyor belt 1.

[0066] The stability of brush 401 can be improved by setting the first bearing seat.

[0067] Preferably, the brush 401 is cylindrical and coaxial with the first connecting shaft. The length direction of the brush 401 is the same as the width direction of the conveyor belt 1, and the length of the brush 401 is not less than the width of the conveyor belt 1, so that the brush 401 can clean all positions of the conveyor belt 1 and achieve better cleaning effect.

[0068] According to one embodiment of the present invention, the cleaning device 4 includes a high-pressure air duct 402 and a blower head 403 connected to each other;

[0069] The air outlet of the blower head 403 is positioned facing the bearing surface of the conveyor belt 1.

[0070] Furthermore, multiple blowers 403 are provided and are arranged sequentially at intervals along the length of the high-pressure air duct 402, and the blowing area of ​​multiple blowers 403 can completely cover the bandwidth of the conveyor belt 1.

[0071] The high-pressure air duct 402 is externally connected to an air supply system for supplying air to the high-pressure air duct 402.

[0072] After the brush 401 cleans, the high-pressure air is sent to the blower head 403 by the high-pressure air pipe 402 and blown towards the bearing surface of the conveyor belt 1 to clean the residual dirt on the conveyor belt 1, making the bearing surface of the conveyor belt 1 cleaner and not affecting the subsequent sorting and identification of the minerals to be sorted.

[0073] It should be noted that the rotation direction of brush 401 is opposite to the conveying direction of conveyor belt 1, which makes its cleaning effect better.

[0074] According to one embodiment of the present invention, the transmission type intelligent dry separator further includes a cleaning device 7, which includes a water supply pipe 701 and a nozzle 702 connected to each other.

[0075] The nozzle of the spray head 702 is oriented towards the bearing surface of the conveyor belt 1. The water supply pipe 701 is used to supply external water to the spray head 702.

[0076] It should be noted that the nozzle 702 is positioned between the brush 401 and the blower head 403.

[0077] Multiple nozzles 702 are provided, and the multiple nozzles 702 are arranged sequentially and at intervals along the length direction of the water supply pipe 701. The length direction of the water supply pipe 701 is the same as the width direction of the conveyor belt 1, and the water supply pipes 701 are arranged sequentially and at intervals along the length direction. The spraying areas of each two adjacent water supply pipes 701 onto the bearing surface of the conveyor belt 1 partially overlap, which can ensure that the entire conveyor belt 1 can be cleaned, resulting in a better cleaning effect.

[0078] According to one embodiment of this utility model, the preferred light source is a linear light source. Using a linear light source provides better illumination of the identification area on the conveyor belt 1, thereby improving sorting accuracy. The brightness of the linear light source is no greater than 700,000 lux.

[0079] Optionally, the light source can also be a point light source, a surface light source, a strip light source, etc.

[0080] The transmission-type intelligent sorting machine also includes a feeding device 9, a material spreading device 10, and an execution system. The material spreading device 10 is located between the feeding device 9 and the conveyor belt 1. The feeding device 9 is used to feed material, and the material spreading device 10 is used to spread material onto the conveyor belt 1. Both the feeding device 9 and the material spreading device 10 are existing technologies and will not be described in detail here.

[0081] The execution system includes multiple air nozzles 5, which are arranged at intervals along the width of the conveyor belt 1, and the blowing direction of the multiple air nozzles 5 is perpendicular to the horizontal plane. An air supply system is connected to the air nozzles 5 to provide high-pressure air to the air nozzles 5.

[0082] The distance between the projection of the air nozzle 5 onto the horizontal plane and the projection of the throwing roller 601 onto the horizontal plane is the first distance. The first distance is between 100-200mm, preferably 150mm. The minerals to be sorted are thrown under the conveyor belt 1, and the concentrate is thrown out normally. The air nozzle 5 in the execution system blows the tailings according to the sorting results. In order to prevent the tailings from hitting the conveyor belt 1, the first distance is not less than 100mm. And since the farther the minerals to be sorted are thrown, the greater the dispersion distance, in order to improve the blowing accuracy of the air nozzle 5, the first distance is not greater than 200mm.

[0083] Of course, the blasted minerals can also be used as concentrates, and the tailings are disposed of normally.

[0084] In this embodiment, multiple partitions are fixedly connected to the conveyor belt 1 along its length, dividing the conveyor belt 1 into four equal parts. Each part corresponds to a feeding device 9 and a spreading device 10. Each feeding device 9 and spreading device 10 can be started independently, which improves production efficiency. Even if one set of feeding devices 9 and spreading devices 10 fails, it will not affect the operation of feeding devices 9 and spreading devices 10 in other positions.

[0085] Specifically, the minerals to be sorted are evenly spread from the cloth-laying device 10 onto the conveyor belt 1 for transport. The light source is turned on to illuminate the identification area, and the camera 2 is turned on. When the minerals to be sorted pass through the identification area on the conveyor belt 1, the camera 2 takes pictures of the minerals to be sorted in the identification area. The identification system obtains the light transmittance of each mineral to be sorted in the image based on the captured image. At this time, the brush 401 on the lower side of the conveyor belt 1 rotates under the drive of the first drive component to clean the bearing surface of the conveyor belt 1. The water supply pipe 701 supplies water at intervals and sprays it out from the nozzle 702 to clean the conveyor belt 1. The high-pressure air pipe 402 at the bottom of the conveyor belt 1 continuously supplies air and blows it out from the blower head 403 to further clean the bearing surface of the conveyor belt 1 without affecting the illumination of the light source.

[0086] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0087] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0088] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transmission-type intelligent dry separator, characterized in that, Includes a conveyor belt (1), a camera (2), a light source, and a recognition system; The conveyor belt (1) is a light-transmitting belt, and the conveyor belt (1) is used to transport minerals to be sorted; The camera (2) is located on the upper side of the conveyor belt (1), and the position on the conveyor belt (1) corresponding to the camera (2) is the recognition area. The camera (2) is used to capture images of the recognition area. The light source includes at least a first light source (3), which is located below the recognition area and opposite to the camera (2). The light source also includes a second light source, which is located above the recognition area; The identification system is connected to the camera (2) for receiving images captured by the camera (2) and obtaining the transmittance of each mineral to be sorted in the image based on the image.

2. The transmission-type intelligent dry separator according to claim 1, characterized in that, The conveyor belt (1) is ring-shaped, and an accommodating space is formed inside the conveyor belt (1). The first light source (3) is located in the accommodating space.

3. A transmission-type intelligent dry separator according to claim 1 or 2, characterized in that, The transmission-type intelligent dry separator also includes a cleaning device (4), which is used to clean the dirt on the bearing surface of the conveyor belt (1).

4. A transmission-type intelligent dry separator according to claim 3, characterized in that, The transmission-type intelligent dry separator also includes a frame (8), and multiple cameras (2) are provided, with the multiple cameras (2) arranged sequentially at intervals along the width direction of the conveyor belt (1); The light source, the conveyor belt (1), and the multiple cameras (2) are all mounted on the frame (8).

5. A transmission-type intelligent dry separator according to claim 4, characterized in that, The cleaning device (4) is located on the underside of the conveyor belt (1).

6. A transmission-type intelligent dry separator according to claim 5, characterized in that, The cleaning device (4) includes a brush (401) and a first drive assembly; The brush (401) contacts the bearing surface of the conveyor belt (1), and the first driving component is used to drive the brush (401) to rotate along its axial direction.

7. A transmission-type intelligent dry separator according to claim 5, characterized in that, The cleaning device (4) includes a high-pressure air duct (402) and a blower head (403) connected together. The air outlet of the blower head (403) is positioned facing the bearing surface of the conveyor belt (1).

8. A transmission-type intelligent dry separator according to claim 5, characterized in that, The transmission-type intelligent dry separator also includes a cleaning device (7), which includes a water supply pipe (701) and a nozzle (702) connected to each other. The nozzle (702) is positioned facing the bearing surface of the conveyor belt (1).

9. A transmission-type intelligent dry separator according to claim 1, characterized in that, The conveyor belt (1) is a colorless, light-transmitting belt.

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