Mixing uniformity detection device

Abstract

The invention discloses a mixing uniformity detection device which comprises a mixing cylinder, a sampling cover movably arranged in the mixing cylinder, a lifting mechanism and a visual detection camera which is arranged in a detection area of the mixing cylinder and externally connected with a computer, the mixing cylinder is provided with a feeding port, a discharging port and a stirring device, a separation plate is arranged in the mixing cylinder, and the separation plate is connected with the lifting mechanism. The separation plate is suitable for dividing an inner cavity of the mixing barrel into a mixing area and a detection area, the lifting mechanism is connected with the sampling cover to drive the sampling cover to move in the mixing area and the detection area, and when the sampling cover is located in the mixing area, the lifting mechanism drives the sampling cover to sample materials in the mixing area; when the sampling cover is reset to the detection area after sampling, the visual detection camera is suitable for shooting the material mixing condition in the sampling cover and then transmitting the material mixing condition to the computer so that the material uniformity can be analyzed through the computer, the sampling component linearly moves in the material, detection and comparison are carried out after sampling is carried out on multiple positions, and the detection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology for material mixing, and more specifically, to a device for detecting the uniformity of mixing. Background Technology

[0002] Currently, mixing uniformity detection devices mainly rely on cameras and their internal image sensors to visually inspect materials. By capturing image information on the surface of the material, the distribution of different components in the material is analyzed, thereby assessing the mixing uniformity of the material. This technology has advantages such as non-contact detection and the ability to acquire large amounts of data in real time. It plays a key role in assessing the mixing uniformity of materials in industrial production fields such as chemical, pharmaceutical, and food processing.

[0003] A search revealed a Chinese patent, CN209559702U, which discloses a device for detecting the uniformity of fish feed mixing. This patent involves inserting a sampling box into an opening in a mixing drum to sample the material before testing it with a detection head. However, the sampling location is fixed and limited, preventing free sampling at different locations within the material. Due to the non-uniformity of the material mixture, the composition of samples from different locations may vary significantly. Sampling at a fixed location cannot represent the overall mixing state of the material, resulting in inaccurate and unrepresentative test results. Existing technologies sometimes use pumps to extract samples. The process of extracting samples by external force disturbs the material, promoting further mixing and altering the original mixing state, thus distorting the test results and failing to accurately reflect the actual uniformity of the material before extraction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a mixing uniformity detection device, wherein the sampling component moves linearly in the material, and after sampling from multiple locations, it is detected and compared to improve the detection accuracy.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is: a mixing uniformity detection device, comprising:

[0006] A mixing cylinder is provided with an inlet, an outlet and a stirring device. A separation plate is provided inside the mixing cylinder, which is adapted to divide the inner cavity of the mixing cylinder into a mixing area and a detection area.

[0007] The sampling hood is set inside the mixing cylinder;

[0008] A lifting mechanism is connected to the sampling hood to move the sampling hood between the mixing area and the detection area;

[0009] A vision inspection camera is installed in the detection area of ​​the mixing cylinder and externally connected to a computer; wherein,

[0010] When the sampling hood is located in the mixing area, the lifting mechanism drives the sampling hood to sample the material in the mixing area; when the sampling hood returns to the detection area after sampling, the visual inspection camera is adapted to take pictures of the material mixing situation in the sampling hood and transmit them to the computer for analysis of material uniformity.

[0011] Furthermore, an arc-shaped portion is provided below the sampling hood. When the sampling hood is driven to move within the material, the arc-shaped portion causes the material in contact with the arc-shaped portion to flow to both sides of the arc-shaped portion.

[0012] Sampling chambers and drainage seats are provided on both sides of the sampling hood, one of the sampling chambers being close to the center of the mixing cylinder and the other sampling chamber being close to the edge of the mixing cylinder;

[0013] The two sampling chambers are used to store the diverted samples respectively, and the visual inspection camera is used to photograph the samples in the two sampling chambers and then perform detection and comparison.

[0014] The flow guide seat is provided with a sampling inlet and a sampling outlet. The flow guide seat is provided with a flow channel for connecting the sampling inlet and the sampling outlet. The sampling outlet is connected to the inner cavity of the sampling chamber. The material after being diverted by the arc-shaped part is pushed by the continuous movement of the sampling hood and flows into the flow channel through the sampling inlet, and then enters the sampling chamber through the sampling outlet.

[0015] The sampling chamber is equipped with an observation window.

[0016] Furthermore, a separation assembly is provided inside the sampling hood. The separation assembly includes a first rotating mechanism and a rotating partition. The rotating partition is rotatably installed in the sampling chamber. Several storage chambers are formed on the rotating partition along the circumference. The first rotating mechanism is connected to the rotating partition to drive the rotating partition to rotate in the sampling chamber, thereby pushing the material discharged from the sampling outlet into each of the storage chambers for storage.

[0017] Furthermore, the observation window extends into the inner cavity of the sampling chamber, and the extended portion is a transparent plate. The transparent plate abuts against the rotating spacer to seal the upper space of each of the storage chambers.

[0018] Furthermore, the sampling hood is provided with a switch assembly for opening or closing the sampling outlet. The switch assembly includes a linear drive mechanism and a baffle that is correspondingly arranged with the sampling chamber and cooperates with the corresponding sampling outlet. The baffle is slidably arranged on the drainage seat. The linear drive mechanism is connected to the baffle to drive the baffle to move in the corresponding drainage seat, thereby opening or closing the corresponding sampling outlet.

[0019] Furthermore, the flow channel includes a direct current channel disposed on the baffle and an arc-shaped channel disposed on the guide seat. When the baffle is in the initial position, the direct current channel and the arc-shaped channel are connected, allowing the material to sequentially pass through the sampling inlet, the arc-shaped channel, the direct current channel, and the sampling outlet, and finally enter the sampling chamber; wherein:

[0020] The DC channel divides the baffle into a main baffle and a side baffle. The main baffle is located inside the sampling hood, and the side baffle is located outside the sampling hood. When the baffle is in the initial position, the side baffle abuts against the flow guide seat to restrict the material from entering the sampling chamber only from the sampling inlet.

[0021] When the side baffle is moved to the outside of the flow guide seat, the main baffle is located between the sampling outlet and the arc-shaped channel, preventing material from entering the sampling chamber through the arc-shaped channel;

[0022] When the side baffle is moved to the outside of the flow seat, the DC channel in the material is used to accommodate the material at the current depth range. When the baffle is reset, the side baffle is adapted to push the material contained in the DC channel into the flow seat.

[0023] Furthermore, a flow divider is provided at the bottom of the sampling hood. The flow divider is located above the DC channel that is activated to extend outside the flow guide seat, so as to divide the material discharged from above the DC channel.

[0024] Furthermore, it also includes a discharge mechanism, which comprises:

[0025] A discharge port is provided on the flow guide seat and communicates with the arc-shaped channel. The discharge port is staggered with the position of the DC channel extending out of the flow guide seat. The discharge port is adapted to discharge part of the material entering the arc-shaped channel when the DC channel and the arc-shaped channel are not communicated.

[0026] The sealing portion provided on the baffle is adapted to block the discharge port when the DC channel and the arc-shaped channel are connected, so as to seal the discharge port;

[0027] The mating groove provided on the baffle is adapted to abut against the discharge port when the DC channel and the arc channel are not connected, thereby opening the discharge port.

[0028] Furthermore, a laterally inclined portion is provided on the contact surface between the rotating partition and the inner wall of the sampling chamber, and an upwardly inclined portion is provided on the contact surface between the rotating partition and the transparent plate;

[0029] The rotating spacer is adapted to be driven to rotate, thereby scraping the residue on the sampling chamber through the lateral tilting part and scraping the residue on the transparent plate through the upper tilting part;

[0030] The rotating spacer is adapted to be driven to rotate after the detection is completed, thereby pushing the sample in the sampling chamber to the sampling outlet, so that the sample flows through the sampling outlet to the sampling inlet and leaves the drainage seat.

[0031] Furthermore, a cleaning ring is provided inside the mixing cylinder, the cleaning ring is located in the detection area, and the cleaning ring has an air outlet and an air inlet corresponding to the sampling chamber. The air inlet is suitable for connecting an external jet device, and the air outlet is suitable for discharging the gas introduced by the air inlet and spraying it onto the observation window on the corresponding sampling chamber.

[0032] By adopting the above technical solution, the present invention has the following beneficial effects:

[0033] 1. The separating plate divides the mixing cylinder into a mixing area and a detection area, avoiding interference from stirring during detection. The lifting mechanism drives the sampling hood to penetrate into different locations of the material to collect samples before returning to the detection area, replacing the traditional manual sampling during shutdown. The arc-shaped part divides the material and guides it to flow to both sides as it moves through the material, avoiding changes in uniformity caused by compression and repeated sampling of the same depth range. The sampling chambers on both sides collect the diverted samples simultaneously, and visual inspection is performed through the observation window, solving the problem of insufficient representativeness of single-location sampling and improving the accuracy of uniformity assessment.

[0034] 2. The rotating partition divides the sample into multiple storage chambers to avoid sample mixing. The transparent plate isolates the sample and facilitates visual imaging. As the sampling hood moves continuously under the drive of the lifting mechanism, it can continuously sample materials from multiple depth ranges. The rotating partition then pushes the materials from multiple different depth ranges into different storage chambers.

[0035] 3. When sampling is required within a specified depth range, the side baffle is moved to the outside of the flow tray, and the material within the specified depth range is collected through the DC channel. The rear baffle is then reset, and the material in the specified depth area is collected into the flow tray under the constraint of the DC channel for subsequent imaging and detection. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of the mixing cylinder of the present invention;

[0037] Figure 2 This is a schematic diagram of the internal structure of the mixing cylinder of the present invention. Figure 1 ;

[0038] Figure 3 This is a schematic diagram of the internal structure of the mixing cylinder of the present invention. Figure 2 ;

[0039] Figure 4 This is a schematic diagram of the lifting mechanism structure of the present invention;

[0040] Figure 5 This is a schematic diagram showing the distribution of the cleaning ring and the visual inspection camera within the detection area of ​​this invention;

[0041] Figure 6 This is a schematic diagram of the overall structure of the sampling cover of the present invention. Figure 1 ;

[0042] Figure 7 This is a schematic diagram of the overall structure of the sampling cover of the present invention. Figure 2 ;

[0043] Figure 8 This is a schematic diagram of the internal structure of the sampling hood of the present invention;

[0044] Figure 9 This is a schematic diagram of the baffle of the present invention in its initial position. Figure 1 ;

[0045] Figure 10 This is a schematic diagram of the baffle of the present invention in its initial position. Figure 2 ;

[0046] Figure 11 This is a schematic diagram of the structure of the baffle portion of the present invention after it has been extended.

[0047] Figure 12 This is a cross-sectional view of the drainage seat structure of the present invention;

[0048] Figure 13 This is a cross-sectional view of the baffle structure of the present invention;

[0049] In the diagram: 1. Mixing cylinder; 11. Inlet; 12. Outlet; 13. Agitator; 14. Separator plate;

[0050] 2. Visual inspection camera;

[0051] 3. Cleaning ring; 31. Air inlet; 32. Air outlet;

[0052] 4. Sampling hood; 41. Arc-shaped section; 42. Sampling chamber; 43. Drainage seat; 44. Sampling inlet; 45. Observation window; 46. Sampling outlet; 47. Rotating partition; 48. Storage chamber; 411. Main baffle; 412. Flow channel; 413. Side baffle; 415. Discharge port; 416. Transparent plate; 417. Laterally inclined section; 418. Upperly inclined section; 420. Diverter plate; 421. Arc-shaped channel; 422. Direct current channel; 423. Sealing section; 424. Fitting groove;

[0053] 51. First motor; 52. First threaded rod; 53. First transmission sleeve; 54. Telescopic bellows tube; 55. Second motor; 56. Second threaded rod; 57. Second transmission sleeve; 58. Connecting rod;

[0054] 61. Third motor; 62. First driving gear; 63. Internal and external gear rings; 64. First driven gear;

[0055] 81. Fourth motor; 82. Driving bevel gear; 83. Driven bevel gear; 84. Double-acting screw. Detailed Implementation

[0056] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0057] Example 1: As Figure 1-3 As shown, the mixing uniformity detection device includes:

[0058] The mixing cylinder 1 is provided with an inlet 11, an outlet 12 and a stirring device 13. The mixing cylinder 1 is provided with a separation plate 14, which is suitable for dividing the inner cavity of the mixing cylinder 1 into a mixing area and a detection area.

[0059] The sampling hood 4 is set inside the mixing cylinder 1;

[0060] A lifting mechanism is connected to the sampling hood 4 to move the sampling hood 4 between the mixing area and the detection area.

[0061] A vision inspection camera 2 is set in the detection area of ​​the mixing cylinder 1 and connected to an external computer; wherein,

[0062] When the sampling hood 4 is located in the mixing area, the lifting mechanism drives the sampling hood 4 to sample the material in the mixing area; when the sampling hood 4 returns to the detection area after sampling, the visual inspection camera 2 is adapted to take pictures of the material mixing situation in the sampling hood 4 and transmit them to the computer for analysis of the material uniformity.

[0063] The visual inspection camera 2 can be a high-resolution explosion-proof camera. Its function is to take pictures of the samples after sampling by the sampling cover 4, and then feed the images back to the computer. The computer analyzes the uniformity of the samples in the image by the distribution of color, particles or texture. The computer is not shown in the figure. The specific structure and working principle of the visual inspection camera 2 are existing technologies and will not be described in detail here.

[0064] The stirring device 13 includes a drive source and a stirring component. The drive source drives the stirring component to rotate inside the mixing cylinder 1 to stir and mix various materials. The stirring component can be selected according to the actual situation, such as a lifting plate. It should be noted that the moving paths of the stirring component and the sampling hood 4 should not interfere with each other.

[0065] like Figure 2 , 3 As shown in Figure 5, in this embodiment, the lifting mechanism includes a first motor 51, a first threaded rod 52, and a first transmission sleeve 53. The first motor 51 is mounted on the mixing cylinder 1, the first threaded rod 52 is rotatably mounted inside the mixing cylinder 1, and the first transmission sleeve 53 is assembled on the first threaded rod 52. The first transmission sleeve 53 is connected to the sampling cover 4. The output end of the first motor 51 is connected to the first threaded rod 52 to drive the first threaded rod 52 to rotate, thereby driving the first transmission sleeve 53 to move linearly along the axial direction of the first threaded rod 52. A telescopic bellows tube 54 is connected between the first transmission sleeve 53 and the mixing cylinder 1. The first threaded rod 52 is located inside the telescopic bellows tube 54. A limit rod is provided inside the mixing cylinder 1. The first transmission sleeve 53 is movably sleeved outside the limit rod. When the first transmission sleeve 53 is driven to move, it slides outside the limit rod.

[0066] In this embodiment, when the lifting mechanism needs to move the sampling cover 4, the first motor 51 is started to drive the first threaded rod 52 to rotate, which in turn drives the first transmission sleeve 53 to move linearly. The direction of movement of the sampling cover 4 is controlled by the forward and reverse rotation of the first motor 51. Since the first threaded rod 52 is located inside the mixing cylinder 1, a telescopic bellows tube 54 is provided to avoid the material affecting the fit between the first threaded rod 52 and the first transmission sleeve 53. When the first transmission sleeve 53 moves, it causes the telescopic bellows tube 54 located in the direction of movement to retract, while the other end extends... The bellows tube 54 is stretched from its original contracted state. The first threaded rod 52 and the part where the first threaded rod 52 and the first transmission sleeve 53 are assembled are all located inside the telescopic bellows tube 54, which can avoid contact with the material in the mixing cylinder 1. It should be noted that the telescopic bellows tube 54 is existing technology, and its specific structure and working principle will not be described in detail here. Other tubes with contraction function can also be used, as long as they can wrap the first threaded rod 52 and do not restrict the normal movement of the first transmission sleeve 53. The second threaded rod 56 is connected to the mixing cylinder 1 through a rotary seal.

[0067] like Figure 4 As shown, in another embodiment: the lifting mechanism includes a second motor 55, a second threaded rod 56, a second transmission sleeve 57, and a connecting rod 58. A bracket is connected to the outer circumferential surface of the mixing cylinder 1. The second motor 55 is mounted on the bracket. The second threaded rod 56 is rotatably mounted inside the bracket. The second transmission sleeve 57 is assembled on the second threaded rod 56. The output end of the second motor 55 is connected to the second threaded rod 56 to drive the second threaded rod 56 to rotate, thereby driving the second transmission sleeve to move along the axial direction of the second threaded rod 56. One end of the connecting rod 58 is connected to the second transmission sleeve 57, and the other end of the connecting rod 58 is connected to the sampling cover 4. In this embodiment, when the lifting mechanism is needed to move the sampling cover 4, the second motor 55 is started to drive the second threaded rod 56 to rotate, which in turn drives the second transmission sleeve 57 to move linearly. When the second transmission sleeve 57 moves, it drives the connecting rod 58 to move. When the connecting rod 58 moves inside the mixing cylinder 1, it drives the sampling cover 4 to move. The direction of movement of the sampling cover 4 is controlled by the forward and reverse rotation of the second motor 55. It should be noted that the mixing cylinder 1 and the connecting rod 58 can be sealed according to the actual situation. When sealing is required, a reciprocating axial sealing ring can be used. This part is prior art, and its specific structure and working principle will not be described in detail here.

[0068] like Figure 6-7 As shown, an arc-shaped part 41 is provided below the sampling hood 4. When the sampling hood 4 is driven to move inside the material, the arc-shaped part 41 causes the material in contact with the arc-shaped part 41 to flow to both sides of the arc-shaped part 41.

[0069] Sampling chambers 42 and flow guides 43 are provided on both sides of the sampling hood 4. One sampling chamber 42 is close to the center of the mixing cylinder 1, and the other sampling chamber 42 is close to the edge of the mixing cylinder 1.

[0070] The two sampling chambers 42 are used to store the diverted samples respectively, and the visual inspection camera 2 is used to take pictures of the samples in the two sampling chambers 42 and then perform inspection and comparison.

[0071] The flow guide seat 43 is provided with a sampling inlet 44 and a sampling outlet 46. The flow guide seat 43 is provided with a flow channel 412 for connecting the sampling inlet 44 and the sampling outlet 46. The sampling outlet 46 is connected to the inner cavity of the sampling chamber 42. The material after being diverted by the arc-shaped part 41 is pushed by the continuous movement of the sampling cover 4 and flows into the flow channel 412 through the sampling inlet 44, and then enters the sampling chamber 42 through the sampling outlet 46.

[0072] The sampling chamber 42 is equipped with an observation window 45, which is made of transparent material;

[0073] The arc-shaped part 41 can forcibly divide the material in the same horizontal depth range, causing the material in the same location to flow into two streams. One stream is the material near the center of the mixing cylinder 1, and the other stream is the material near the edge of the mixing cylinder 1, for subsequent detection and comparison. The data can be used to evaluate the uniformity of the material in the same location. The observation window 45 can be made of glass.

[0074] like Figure 8 As shown, a separation assembly is provided inside the sampling hood 4. The separation assembly includes a first rotating mechanism and a rotating partition 47. The rotating partition 47 is rotatably installed in the sampling chamber 42. Several storage chambers 48 are opened on the rotating partition 47 along the circumferential direction. The first rotating mechanism is connected to the rotating partition 47 to drive the rotating partition 47 to rotate in the sampling chamber 42, thereby pushing the material discharged from the sampling outlet 46 into each storage chamber 48 for storage.

[0075] The observation window 45 extends into the inner cavity of the sampling chamber 42. The extended part is a transparent plate 416. The transparent plate 416 abuts against the rotating partition 47 to seal the space above each storage chamber 48, thereby preventing the sample in each storage chamber 48 from overflowing into the other storage chambers 48.

[0076] The transparent plate 416 and the observation window 45 are made of the same material and can be integrated as a whole. Both the transparent plate 416 and the observation window 45 are fixedly installed on the corresponding sampling chamber 42 and are not affected by the first rotating mechanism.

[0077] like Figure 8 As shown, the first rotating mechanism includes a third motor 61, a first driving gear 62, inner and outer gear rings 63, and a first driven gear 64. The third motor 61 is installed inside the sampling hood 4. The first driving gear 62 and the inner and outer gear rings 63 are rotatably installed inside the sampling hood 4. The first driven gear 64 is rotatably installed inside the sampling chamber 42. The first driven gear 64 is coaxially connected to the rotating spacer 47. The first driven gear 64 meshes with the outer teeth of the inner and outer gear rings 63. The first driving gear 62 meshes with the inner teeth of the inner and outer gear rings 63. The output end of the third motor 61 is connected to the first driving gear 62 to drive the first driving gear 62 to rotate, thereby driving the inner and outer gear rings 63 and the first driven gear 64 to rotate.

[0078] When it is necessary to control the rotating spacer 47 to rotate continuously or rotate at a certain angle, the output end of the third motor 61 is started to rotate forward, driving the first driving gear 62 to rotate, thereby driving the inner and outer gear rings 63 to rotate, then driving the first driven gear 64 to rotate, and then driving the rotating spacer 47 to rotate. It should be noted that the rotating spacer 47 and the first driven gear 64 do not drive the transparent plate 416 to rotate synchronously during the rotation process.

[0079] like Figure 5As shown, a cleaning ring 3 is provided inside the mixing cylinder 1. The cleaning ring 3 is located in the detection area. The cleaning ring 3 has an air outlet 32 ​​and an air inlet 31 corresponding to the sampling chamber 42. The air inlet 31 is suitable for connecting an external jet device, and the air outlet 32 ​​is suitable for discharging the gas introduced by the air inlet 31 and spraying it onto the observation window 45 on the corresponding sampling chamber 42.

[0080] The jetting device can be an air compressor or blower, which can compress the gas and then introduce it into the cleaning ring 3 through the air inlet 31. The gas discharged from the air outlet 32 ​​performs jet cleaning on the observation window 45, removing the material attached to the surface of the observation window 45 so that the visual inspection camera 2 can take pictures.

[0081] The working principle of this embodiment is as follows:

[0082] When the mixing drum 1 needs to work, multiple materials are put into the mixing area inside the mixing drum 1 through several feed ports 11 set on the mixing drum 1, and the stirring device 13 is started to stir and mix the multiple materials.

[0083] After mixing for a certain period of time, the mixing status of the materials is monitored online. During the detection process, the stirring device 13 can be in working or stopped state. When detection is required, the lifting mechanism is activated to drive the sampling hood 4, which is initially located in the detection area, to move into the material inside the mixing area. During the movement of the sampling hood 4 into the material, its upper arc-shaped part 41 can produce a diversion effect on the material in a flowing or stationary state, dividing the material in contact with it into two streams, which flow to both sides of the arc-shaped part 41. With the continuous movement of the sampling hood 4, the material diverted to both sides continuously enters the flow channel 412 through the sampling inlet 44 of the guide seat 43. The deeper material exerts a thrust on the upper material, so that the material in multiple depth ranges is gradually pushed into the sampling chamber 42.

[0084] To avoid the accumulation of materials from multiple depth ranges in the sampling chamber 42, which would make it difficult to accurately distinguish the mixing uniformity of materials from each depth range, a rotating partition 47 is provided to divide the inner cavity of the sampling chamber 42 into multiple storage chambers 48. When the sampling hood 4 moves within the material, materials from each depth range enter the sampling chamber 42 through the sampling outlet 46. At this time, the first rotating mechanism is activated to drive the rotating partition 47 to rotate, pushing the material located at the sampling outlet 46 into each storage chamber 48 for storage. Through the continuous rotation of the rotating partition 47, material samples from each depth range are stored in different storage chambers 48. During the entire sampling process, the material enters the sampling chamber 42 by its own flow. Compared with sampling methods using external forces such as pump extraction, this reduces the disturbance of external forces and results in more accurate data. The storage chambers 48 can be marked accordingly to distinguish the order in which materials from different depth ranges are stored.

[0085] After sampling is completed, the lifting mechanism is controlled to move and reset the sampling hood 4 to the initial position in the detection area. At this time, the air outlet 32 ​​on the cleaning ring 3 and the visual inspection camera 2 are aligned with the observation window 45 of the corresponding sampling chamber 42. The jet device is activated and the observation window 45 is cleaned by jetting through the air outlet 32. Then, the visual inspection camera 2 takes pictures of the sample in the sampling chamber 42 and feeds them back to the computer for uniformity analysis. The samples in multiple storage chambers 48 in a single sampling chamber 42 can be used to analyze the material mixing uniformity in multiple depth ranges at the same upper and lower position in the mixing cylinder 1. The data provided by the samples in two sampling chambers 42 can not only compare the uniformity of the material in the same horizontal depth range, but also intuitively show the difference in material mixing uniformity between the material near the center and the material near the edge.

[0086] After the shooting is completed, when the sampling hood 4 is in the detection area, there is no material in the drainage seat 43. At this time, the first rotating mechanism is started to drive the rotating partition 47 to rotate, and the material in the storage chamber 48 is moved to the sampling outlet 46, so that the material falls into the drainage seat 43 and is finally discharged from the drainage seat 43 through the sampling inlet 44 and re-enters the material in the mixing area.

[0087] Example 2: Figure 9-10 As shown, this embodiment further includes the following structure based on embodiment one: a switch assembly for opening or closing the sampling outlet 46 is provided inside the sampling hood 4. The switch assembly includes a linear drive mechanism and a baffle that is correspondingly provided to the sampling chamber 42 and cooperates with the corresponding sampling outlet 46. The baffle is slidably disposed on the drainage seat 43. The linear drive mechanism is connected to the baffle to drive the baffle to move in the corresponding drainage seat 43, thereby opening or closing the corresponding sampling outlet 46.

[0088] like Figure 9-10 As shown, the linear drive mechanism includes a fourth motor 81, a driving bevel gear 82, a driven bevel gear 83, and a bidirectional screw 84. The fourth motor 81 is installed inside the sampling hood 4. The bidirectional screw 84 is rotatably installed inside the sampling hood 4. The bidirectional screw 84 is provided with two oppositely arranged threads. Two baffles are respectively provided on the two threads. The driving bevel gear 82 is rotatably installed inside the sampling hood 4. The driven bevel gear 83 is fixedly sleeved on the outer circumferential surface of the bidirectional screw 84. The driving bevel gear 82 and the driven bevel gear 83 mesh. The output end of the fourth motor 81 is connected to the driving bevel gear 82 to drive the driving bevel gear 82 to rotate, thereby driving the bidirectional screw 84 to rotate, causing the two baffles to move towards or away from each other. A limiting part 419 is provided on the part of the baffle located inside the sampling hood 4. The limiting part 419 is adapted to restrict the baffle from continuing to move when the baffle moves to the point where the limiting part 419 abuts against the inner wall of the sampling hood 4.

[0089] When it is necessary to control the movement of the baffles to open or close the sampling outlet 46, the fourth motor 81 is started, driving the driving bevel gear 82 to rotate, which in turn drives the driven bevel gear 83 to rotate, which in turn drives the bidirectional screw 84 to rotate. When the bidirectional screw 84 rotates, it drives the two baffles to move. The baffles are configured to cooperate with the corresponding sampling outlets 46, thereby opening or closing the corresponding sampling outlets 46 during the movement of the baffles. It should be noted that the opening or closing of the sampling outlet 46 is controlled by the forward and reverse rotation of the output of the fourth motor 81.

[0090] like Figure 10 As shown, the flow channel 412 includes a direct current channel 422 disposed on the baffle and an arc-shaped channel 421 disposed on the guide seat 43. When the baffle is in the initial position, the direct current channel 422 and the arc-shaped channel 421 are connected, allowing the material to pass sequentially through the sampling inlet 44, the arc-shaped channel 421, the direct current channel 422, and the sampling outlet 46, and finally enter the sampling chamber 42; wherein:

[0091] The DC channel 422 divides the baffle into a main baffle 411 and a side baffle 413. The main baffle 411 is located inside the sampling hood 4, and the side baffle 413 is located outside the sampling hood 4. When the baffle is in the initial position, the side baffle 413 abuts against the flow guide seat 43 to restrict the material from entering the sampling chamber 42 only from the sampling inlet 44.

[0092] When the side baffle 413 is moved to the outside of the flow guide seat 43, the main baffle 411 is located between the sampling outlet 46 and the arc-shaped channel 421, preventing the material from entering the sampling chamber 42 through the arc-shaped channel 421.

[0093] When the side baffle 413 is moved to the outside of the flow seat 43, the direct current channel 422 in the material is used to accommodate the material at the current depth range. When the baffle is reset, the side baffle 413 is adapted to push the material contained in the direct current channel 422 into the flow seat 43.

[0094] like Figure 10 As shown, a flow divider 420 is provided at the bottom of the sampling hood 4. The flow divider 420 is located above the DC channel 422 that is activated to extend out of the flow guide seat 43, so as to divide the material discharged from the DC channel 422.

[0095] The flow divider 420 is adapted to divide and guide the material that enters from below the DC channel 422 and exits from above to both sides during the process of the sampling hood 4 being moved downward in the material to the designated depth range, so as to avoid the accumulation of material in the DC channel 422 in the non-designated depth range.

[0096] Specifically, the diverter plate 420 includes a pointed surface and an inclined surface. The pointed surface is suitable for dividing the material discharged above the DC channel 422 into non-specified depth ranges, and the inclined surface guides the divided material to both sides.

[0097] like Figure 9 , 10 As shown, the detection device also includes a discharge mechanism, which includes:

[0098] A discharge port 415 is provided on the flow guide seat 43 and communicates with the arc-shaped channel 421. The discharge port 415 is staggered with the direct current channel 422 extending out of the flow guide seat 43. The discharge port 415 is suitable for discharging part of the material entering the arc-shaped channel 421 when the direct current channel 422 and the arc-shaped channel 421 are not communicated.

[0099] The sealing part 423 provided on the baffle is adapted to block the discharge port 415 when the DC channel 422 and the arc channel 421 are connected, so as to block the discharge port 415.

[0100] The mating groove 424 provided on the baffle is adapted to abut against the discharge port 415 when the DC channel 422 and the arc channel 421 are not connected, thereby opening the discharge port 415.

[0101] The working principle of this embodiment is as follows:

[0102] When sampling is required for materials within a specified depth range, the linear drive mechanism is first activated to move the baffle as a whole to the main baffle 411, which closes the sampling outlet 46. Then, the sampling hood 4 moves as a whole towards the specified depth range. During this movement, some material enters the arc-shaped channel 421 through the sampling inlet 44. Meanwhile, as the DC channel 422, located outside the drainage seat 43, moves towards the specified depth range, material from outside the specified depth range enters from below the DC channel 422 and exits from above. When the sampling hood 4 reaches the specified depth, the material within the DC channel 422 is the material within the specified depth range. At this point, the linear drive mechanism is activated again to reset the baffle. During the reset process, the DC channel 422 and the material within it at the specified depth range are collected into the drainage seat 43. In this case, the DC... Channel 422 and arc-shaped channel 421 are in a connected state. Material at the specified depth range is located in DC channel 422, while arc-shaped channel 421 is filled with material at non-specified depth ranges. At this time, the sampling hood 4 needs to be controlled to move downward again, so that more material at non-specified depth ranges enters arc-shaped channel 421. This pushes the material at the specified depth range that needs to be sampled in DC channel 422 toward sampling chamber 42. The material at the specified depth range is collected into multiple storage chambers 48 by rotating the rotating partition 47. It should be noted that since the material at the specified depth range is pushed to the sampling chamber 42 by the material at non-specified depth ranges, there is a mixing phenomenon at the junction of the two materials. Therefore, only the material sample above the junction is sampled to ensure the accuracy of the mixing uniformity detection of the material at the specified depth range.

[0103] In order to prevent the material from non-designated depth range from accumulating at the bottom of the sampling chamber 42 as the sampling hood 4 moves toward the designated depth range, thus affecting the accuracy of the detection of the mixing uniformity of the material in the designated depth range, a flow divider 420 is provided. The pointed surface on the flow divider 420 can divide the material from non-designated depth range discharged above the DC channel 422, and guide the divided material to both sides by tilting the surface.

[0104] When the baffle closes the sampling outlet 46, the sampling hood 4 continues to move towards the designated depth range, filling the arc-shaped channel 421. The material below the sampling hood 4 is forcibly squeezed or pushed towards the direct current channel 422 extending to the outside. This results in excessive material from outside the designated depth range being mixed into the direct current channel 422 after reaching the designated depth range. To reduce the amount of material from outside the designated depth range that is ultimately collected into the sampling chamber 42, a discharge mechanism is provided. This allows the arc-shaped channel 421 to continuously accommodate and divert some of the material from outside the designated depth range when the sampling outlet 46 is closed. When the direct current channel 422 and the arc-shaped channel 421 are connected, the sealing part 423 closes the discharge port. 415, so that the flow channel 412 is a whole, which can be used for continuous sampling of materials in various depth ranges. When the DC channel 422 and the arc channel 421 are not connected, the mating groove 424 moves to be opposite to the position of the discharge port 415, thereby opening the discharge port 415. With the continuous movement of the sampling hood 4, the material under the sampling hood 4 can continuously enter the arc channel 421 through the sampling inlet 44 and then be discharged from the discharge port 415. This reduces the accumulation of material under the sampling hood 4 or the movement of too much material from non-specified depth ranges to the DC channel 422. The position of the discharge port 415 is staggered with the DC channel 422, and the material discharged through the discharge port 415 will not enter the DC channel 422.

[0105] Example 3: Figure 8 As shown, this embodiment further includes the following structure based on embodiment one: a side-inclined part 417 is provided on the contact surface between the rotating partition 47 and the inner wall of the sampling chamber 42, and an upward-inclined part 418 is provided on the contact surface between the rotating partition 47 and the transparent plate 416.

[0106] The rotating partition 47 is adapted to be driven to rotate, thereby scraping the residue on the sampling chamber 42 by the side tilting part 417 and scraping the residue on the transparent plate 416 by the upper tilting part 418.

[0107] The rotating spacer 47 is adapted to be driven to rotate after the detection is completed, thereby pushing the sample in the sampling chamber 42 to the sampling outlet 46, so that the sample flows through the sampling outlet 46 to the sampling inlet 44 to leave the drain seat 43.

[0108] The working principle of this embodiment is as follows: The sampling hood 4 is located in the detection area. After the sampled material is photographed, when it is necessary to discharge the sample in the sampling chamber 42, the output end of the third motor 61 is first reversed, which drives the rotating partition 47 to rotate. The rotating partition 47 pushes the material in the storage chamber 48 to the sampling outlet 46. The material located at the sampling outlet 46 moves along the flow channel 412 to the sampling inlet 44 and is finally discharged to the outside of the sampling chamber 42.

[0109] After the material is emptied, material residue may adhere to the sampling chamber 42 and the transparent plate 416. During the rotation of the rotating partition 47, the side inclined part 417 scrapes the residue on the inner wall of the sampling chamber 42, and the upper inclined part 418 scrapes the residue on the transparent plate 416. The scraped residue is also pushed to the sampling outlet 46 with the rotation of the rotating partition 47, and is finally discharged to the outside of the sampling chamber 42.

[0110] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A mixing uniformity detection device, characterized in that... ,include: A mixing cylinder is provided with an inlet, an outlet and a stirring device. A separation plate is provided inside the mixing cylinder, which is adapted to divide the inner cavity of the mixing cylinder into a mixing area and a detection area. The sampling hood is set inside the mixing cylinder; A lifting mechanism is connected to the sampling hood to move the sampling hood between the mixing area and the detection area; A vision inspection camera is installed in the detection area of ​​the mixing cylinder and externally connected to a computer; wherein, When the sampling hood is located in the mixing area, the lifting mechanism drives the sampling hood to sample the material in the mixing area; when the sampling hood returns to the detection area after sampling, the visual inspection camera is adapted to take pictures of the material mixing situation in the sampling hood and transmit them to the computer for analysis of material uniformity.

2. The mixing uniformity detection device according to claim 1, characterized in that: The sampling hood has an arc-shaped portion at its lower part. When the sampling hood is driven to move within the material, the arc-shaped portion causes the material in contact with the arc-shaped portion to flow to both sides of the arc-shaped portion. Sampling chambers and drainage seats are provided on both sides of the sampling hood, one of the sampling chambers being close to the center of the mixing cylinder and the other sampling chamber being close to the edge of the mixing cylinder; The two sampling chambers are used to store the diverted samples respectively, and the visual inspection camera is used to photograph the samples in the two sampling chambers and then perform detection and comparison. The flow guide seat is provided with a sampling inlet and a sampling outlet. The flow guide seat is provided with a flow channel for connecting the sampling inlet and the sampling outlet. The sampling outlet is connected to the inner cavity of the sampling chamber. The material after being diverted by the arc-shaped part is pushed by the continuous movement of the sampling hood and flows into the flow channel through the sampling inlet, and then enters the sampling chamber through the sampling outlet. The sampling chamber is equipped with an observation window.

3. The mixing uniformity detection device according to claim 2, characterized in that: The sampling hood is equipped with a separation component, which includes a first rotating mechanism and a rotating partition. The rotating partition is rotatably installed in the sampling chamber and has several storage chambers circumferentially formed on it. The first rotating mechanism is connected to the rotating partition to drive the rotating partition to rotate in the sampling chamber, thereby pushing the material discharged from the sampling outlet into each of the storage chambers for storage.

4. The mixing uniformity detection device according to claim 3, characterized in that: The observation window extends into the inner cavity of the sampling chamber, and the extended portion is a transparent plate. The transparent plate abuts against the rotating spacer to seal the upper space of each of the storage chambers.

5. The mixing uniformity detection device according to claim 2 or 3, characterized in that: The sampling hood is provided with a switch assembly for opening or closing the sampling outlet. The switch assembly includes a linear drive mechanism and a baffle that is correspondingly arranged with the sampling chamber and cooperates with the corresponding sampling outlet. The baffle is slidably arranged on the drainage seat. The linear drive mechanism is connected to the baffle to drive the baffle to move in the corresponding drainage seat, thereby opening or closing the corresponding sampling outlet.

6. The mixing uniformity detection device according to claim 5, characterized in that: The flow channel includes a direct current channel disposed on the baffle and an arc-shaped channel disposed on the guide seat. When the baffle is in the initial position, the direct current channel and the arc-shaped channel are connected, allowing the material to sequentially pass through the sampling inlet, the arc-shaped channel, the direct current channel, and the sampling outlet, and finally enter the sampling chamber; wherein: The DC channel divides the baffle into a main baffle and a side baffle. The main baffle is located inside the sampling hood, and the side baffle is located outside the sampling hood. When the baffle is in the initial position, the side baffle abuts against the flow guide seat to restrict the material from entering the sampling chamber only from the sampling inlet. When the side baffle is moved to the outside of the flow guide seat, the main baffle is located between the sampling outlet and the arc-shaped channel, preventing material from entering the sampling chamber through the arc-shaped channel; When the side baffle is moved to the outside of the flow seat, the DC channel in the material is used to accommodate the material at the current depth range. When the baffle is reset, the side baffle is adapted to push the material contained in the DC channel into the flow seat.

7. The mixing uniformity detection device according to claim 6, characterized in that: The bottom of the sampling hood is provided with a flow divider plate, which is located above the DC channel that is activated to extend outside the flow guide seat, in order to divide the material discharged from above the DC channel.

8. The mixing uniformity detection device according to claim 6 or 7, characterized in that: It also includes a discharge mechanism, which includes: A discharge port is provided on the flow guide seat and communicates with the arc-shaped channel. The discharge port is staggered with the position of the DC channel extending out of the flow guide seat. The discharge port is adapted to discharge part of the material entering the arc-shaped channel when the DC channel and the arc-shaped channel are not communicated. The sealing portion provided on the baffle is adapted to block the discharge port when the DC channel and the arc-shaped channel are connected, so as to seal the discharge port; The mating groove provided on the baffle is adapted to abut against the discharge port when the DC channel and the arc channel are not connected, thereby opening the discharge port.

9. The mixing uniformity detection device according to claim 4, characterized in that: A laterally inclined portion is provided on the contact surface between the rotating partition and the inner wall of the sampling chamber, and an upwardly inclined portion is provided on the contact surface between the rotating partition and the transparent plate; The rotating spacer is adapted to be driven to rotate, thereby scraping the residue on the sampling chamber through the lateral tilting part and scraping the residue on the transparent plate through the upper tilting part; The rotating spacer is adapted to be driven to rotate after the detection is completed, thereby pushing the sample in the sampling chamber to the sampling outlet, so that the sample flows through the sampling outlet to the sampling inlet and leaves the drainage seat.

10. The mixing uniformity detection device according to claim 2, characterized in that: A cleaning ring is provided inside the mixing cylinder. The cleaning ring is located within the detection area. The cleaning ring has an air outlet and an air inlet corresponding to the sampling chamber. The air inlet is suitable for connecting to an external jetting device, and the air outlet is suitable for discharging the gas introduced by the air inlet and spraying it onto the observation window on the corresponding sampling chamber.

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