Raw material granularity detection system and method

Abstract

The invention provides a raw material granularity detection system and method, and relates to the technical field of granularity detection devices.The raw material granularity detection system comprises a dynamic sampling device, a drying device, a feeding conveying device and a granularity detection device, and the dynamic sampling device, the drying device and the granularity detection device are sequentially arranged in the sample conveying direction; the dynamic sampling device can move along a fixed track to extract a falling sample material and convey the falling sample material to the drying device; the drying device is connected with the granularity detection device through the feeding conveying device, and the drying device is used for drying the extracted sample material; the particle size detection device is used for detecting the particle size proportion of the sample material; the dynamic sampling device is used for extracting samples in a dynamic sampling mode, sampling has representativeness and stability, the samples are dried through the drying device before particle size detection, interference of water on detection precision can be effectively eliminated, the dynamic sampling device and the drying device are matched with the particle size detection device, and the particle size detection efficiency is remarkable.

Description

Technical Field

[0001] The present invention relates to the technical field of particle size detection devices, and particularly relates to a raw material particle size detection system and method. Background Art

[0002] In the iron-making production process, the particle size distribution of raw materials directly affects the blast furnace permeability, reduction efficiency, energy consumption index, etc. The raw material particle size detection system, as a device for detecting the particle size of raw materials, is related to the steel-making quality.

[0003] Existing raw material particle size detection devices usually adopt manual prods, layer samplers, etc., mostly relying on static sampling at fixed points. The extraction of raw materials is not random and often cannot cover the entire stockpile, thus affecting the representativeness and stability of sampling. Moreover, the sample materials extracted by existing raw material particle size detection devices usually have a certain humidity during detection, which will affect the subsequent particle size detection effect. Summary of the Invention

[0004] The purpose of the present invention is to provide a raw material particle size detection system and method to solve the above technical problems existing in the prior art; the preferred technical solutions among the many technical solutions provided by the present invention can produce many technical effects; details are described below.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A raw material particle size detection system provided by the present invention includes a dynamic sampling device, a drying device, a feeding and conveying device, and a particle size detection device, wherein: the dynamic sampling device, the drying device, and the particle size detection device are arranged in sequence along the sample material conveying direction; the dynamic sampling device can move along a fixed trajectory to extract the falling sample material and convey it to the drying device; the drying device is connected to the particle size detection device through the feeding and conveying device, and the drying device is used for drying the extracted sample material; the particle size detection device is used for detecting the particle size proportion of the sample material.

[0006] Preferably, the dynamic sampling device includes a sampling container, a connecting piece, and a moving device, wherein: a sampling cavity is arranged inside the sampling container, and the top side of the sampling cavity is open; the sampling container is connected to the moving device through the connecting piece; the moving device can drive the sampling container to move along a fixed trajectory in the feeding cavity through the connecting piece to extract the raw material falling in the feeding cavity.

[0007] Preferably, the moving device can drive the sampling container to move horizontally in the feeding cavity through the connecting piece, the sampling container is set as a long strip-shaped cubic container, and the horizontal moving direction of the sampling container in the feeding cavity is perpendicular to the length direction of the sampling container.

[0008] Preferably, two opposite side walls of the sampling chamber are inclined, and the diameter of the sampling container gradually increases in width in the direction from top to bottom; the connecting member is provided as a square connecting rod, the first end of the square connecting rod is connected to the moving device, and the sampling container is arranged on the top side of the second end of the square connecting rod; the moving device is provided as a multi-axis robot; the dynamic sampling device further includes a vibration device, and the vibration device is connected to the sampling container.

[0009] Preferably, the particle size detection device includes a weighing and screening device, and the weighing and screening device includes a total sample weighing mechanism, a multi-stage vibration screening mechanism, and a post-screening weighing mechanism, where: the total sample weighing mechanism includes a feed hopper, a total sample on-off component, and a total sample weighing sensor. The discharge end of the feeding and conveying device is connected to the total sample inlet of the feed hopper. The total sample on-off component is arranged at the total sample outlet of the feed hopper for controlling the on-off of the total sample outlet. The total sample weighing sensor is connected to the feed hopper for weighing the sample material in the feed hopper; the multi-stage vibration screening mechanism includes a screening box and a vibration driving component. The screening box includes a box body and a plurality of elastic support members arranged at the bottom of the box body. The vibration driving component is connected to the box body and can drive the box body to vibrate. A plurality of screening chambers are arranged in the box body in a vertical direction in layers, and a screening plate is arranged between adjacent screening chambers; the number of post-screening weighing mechanisms is the same as the number of screening chambers. The post-screening weighing mechanism is connected to the corresponding screening chamber. The post-screening weighing mechanism includes a sample hopper, a sample on-off component, and a sample weighing sensor. The screening chamber is connected to the sample inlet of the corresponding sample hopper. The sample on-off component is arranged at the sample outlet of the sample hopper for controlling the on-off of the sample outlet. The sample weighing sensor is connected to the sample hopper for weighing the sample material in the sample hopper.

[0010] Preferably, the particle size detection device includes a particle size visual detection device, and the particle size visual detection device includes a vibrating feeder, a detection box, and a visual detection component, where: the feed end of the vibrating feeder is connected to the bottommost screening chamber, the discharge end of the vibrating feeder is arranged in the detection box, and the vibrating feeder makes the sample particles disperse and be arranged in order according to the particle size by high-frequency vibration of an electromagnetic sine wave and move forward in turn; the visual detection component includes a light source component, a camera component, and a processor. The light source end of the light source component is arranged in the detection box to provide light for the interior of the detection box. The camera component is used to collect the movement state of the sample material in the detection box. Both the light source component and the camera component are electrically connected to the processor, and the processor can detect the particle size of the sample material through the movement state of the sample material.

[0011] Preferably, the raw material particle size detection system includes a waste hopper assembly and a waste conveying device, wherein: the particle size detection device is connected to the feeding end of the waste conveying device through the waste hopper assembly, and the discharging end of the waste conveying device is arranged above the raw material conveying line.

[0012] Preferably, a sintering crusher is arranged at the upstream position of the raw material conveying line relative to the waste conveying device, wherein: a blanking cavity is arranged in the sintering crusher, a sampling port is connected and arranged to the blanking cavity, and an automatic sampling door is arranged at the position of the sampling port; the automatic sampling door includes a door body and a flipping driving assembly, the door body is flip -ably arranged at the position of the sampling port, the flipping driving assembly is connected to the door body and can drive the door body to flip so as to open or close the sampling port.

[0013] The present invention provides a raw material particle size detection method using any one of the foregoing raw material particle size detection systems, which at least includes the following steps: Step (I) Dynamic sampling: The dynamic sampling device moves along a fixed trajectory to extract the sample material falling towards the raw material conveying line in a moving extraction manner and conveys the sample material to the drying device; Step (II) Drying: The drying device dries the sample material; Step (III) Particle size detection: The feeding and conveying device conveys the dried sample material to the particle size detection device, and the particle size detection device detects the particle size proportion of the sample material. Preferably, the raw material particle size detection method further includes step (IV) Sample material recovery: The waste conveying device conveys the detected sample material to the raw material conveying line.

[0014] The raw material particle size detection system and method provided by the present invention at least have the following beneficial effects: The raw material particle size detection system includes a dynamic sampling system, a drying device, a feeding and conveying device, and a particle size detection device. The dynamic sampling device, the drying device, and the particle size detection device respectively perform sampling, drying, and particle size detection, and the feeding and conveying device is used for conveying the sample material.

[0015] The dynamic sampling device, the drying device, and the particle size detection device are arranged in sequence along the sample material conveying direction. The drying device is connected to the particle size detection device through the feeding and conveying device. When detecting the particle size, the dynamic sampling device moves along a fixed trajectory to extract the falling sample material in a moving material taking manner and conveys it to the drying device. The drying device dries the sample material, and then the feeding and conveying device conveys the dried sample material to the particle size detection device, and the particle size detection device completes the particle size detection of the sample material. The moving material taking method makes the sampling more representative and stable. Drying the sample material before particle size detection can effectively eliminate the interference of moisture on the detection accuracy and ensure the particle size detection effect.

[0016] The present invention extracts samples in a dynamic sampling manner through a dynamic sampling device, and the sampling is representative and stable. The drying device dries the samples before particle size detection, which can effectively eliminate the interference of moisture on the detection accuracy. The dynamic sampling device, the drying device and the particle size detection device cooperate with each other, and the particle size detection efficiency is remarkable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the plant structure of the present invention; Figure 2 It is a schematic diagram of the structures of the devices of the present invention; Figure 3 It is a schematic diagram of the structures of the sintering crusher and the dynamic sampling device of the present invention; Figure 4 It is a schematic diagram of the structure of the dynamic sampling device of the present invention; Figure 5 It is a schematic cross-sectional view of the sampling container of the present invention; Figure 6 It is a schematic diagram of the structures of the drying device, the feeding and conveying device and the particle size detection device of the present invention; Figure 7 It is a schematic diagram of the structure of the drying device of the present invention; Figure 8 It is a schematic diagram of the structure of the feeding and conveying device of the present invention; Figure 9 It is a schematic diagram of the structure of the particle size detection device of the present invention; Figure 10 It is a schematic diagram of the structure of the total sample weighing mechanism from one perspective of the present invention; Figure 11 It is a schematic diagram of the structure of the total sample weighing mechanism from another perspective of the present invention; Figure 12 It is a schematic diagram of the structure of the weighing and screening device from one perspective of the present invention; Figure 13 It is a schematic diagram of the structure of the weighing and screening device from another perspective of the present invention; Figure 14 It is a schematic diagram of the structure of the particle size visual detection device from one perspective of the present invention; Figure 15 It is a schematic diagram of the structure of the particle size visual detection device from another perspective of the present invention; Figure 16It is a schematic structural diagram of the particle size detection device, waste material conveying device and raw material conveying line of the present invention; Figure 17 It is a schematic diagram of the raw material particle size detection method of the present invention.

[0019] Reference numerals 1. Dynamic sampling device; 11. Sampling container; 111. Sampling cavity; 112. Open end; 113. Side wall; 12. Connecting piece; 13. Moving device; 131. Multi-axis robot; 14. Vibration device; 2. Drying device; 3. Feeding and conveying device; 4. Particle size detection device; 41. Total sample weighing mechanism; 411. Feed hopper; 412. Total sample on-off component; 413. Total sample weighing sensor; 42. Multi-stage vibration screening mechanism; 421. Screening box; 4211. Box body; 4212. Elastic support member; 422. Vibration drive component; 43. Post-screening weighing mechanism; 431. Sample hopper; 432. Sample on-off component; 433. Sample weighing sensor; 44. Particle size visual detection device; 441. Vibration feeder; 442. Detection box; 443. Light source component; 444. Camera component; 45. Waste material hopper component; 5. Waste material conveying device; 6. Sintering crusher; 61. Sampling port; 62. Door body; 63. Flip drive component; 7. Raw material conveying line; 8. Dust removal device. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners 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 protected by the present invention.

[0021] Embodiment 1: The present invention provides a raw material particle size detection system. Referring to Figures 1 to 16 as shown, the raw material particle size detection system includes a dynamic sampling device 1, a drying device 2, a feeding and conveying device 3 and a particle size detection device 4. The dynamic sampling device 1, the drying device 2 and the particle size detection device 4 are arranged in sequence along the sample material conveying direction; the drying device 2 is connected to the particle size detection device 4 through the feeding and conveying device 3.

[0022] During particle size detection, the dynamic sampling device 1 extends into the blanking cavity and moves along a fixed trajectory in the blanking cavity, so as to move and extract the falling sample material. After sampling is completed, the dynamic sampling device 1 conveys the sample material to the drying device 2. The drying device 2 dries the sample material, and the feeding and conveying device 3 conveys the dried sample material to the particle size detection device 4. The particle size detection device 4 detects the proportion of each particle size range of the sample material.

[0023] In the above process, the dynamic sampling device 1 completes sampling in a dynamic sampling manner along a fixed trajectory, which can effectively improve the representativeness and stability of sampling and provide a prerequisite for subsequent particle size detection.

[0024] The drying device 2 dries the sample material before particle size detection, which can effectively eliminate the interference of moisture on the detection accuracy.

[0025] The dynamic sampling device 1, the drying device 2 and the particle size detection device 4 cooperate with each other, and the particle size detection effect is remarkable.

[0026] Embodiment 2: Embodiment 2 is based on Embodiment 1: As Figures 1 to 16 shown, the dynamic sampling device 1 includes a sampling container 11, a connecting piece 12 and a moving device 13.

[0027] A sampling cavity 111 is arranged in the sampling container 11. The top side of the sampling cavity 111 is open. The top opening 112 of the sampling container 11 is a sample receiving port. The sampling container 11 is connected to the moving device 13 through the connecting piece 12. The moving device 13 provides moving power for the sampling container 11, and the connecting piece 12 is used for connecting the sampling container 11 and the moving device 13.

[0028] During sampling, the moving device 13 is started, and its sampling end completes sampling in a moving sampling manner along a fixed trajectory. Compared with the existing static sampling method, it can effectively improve the representativeness and stability of sampling.

[0029] As an optional implementation manner, the moving device 13 can drive the sampling container 11 to move horizontally in the blanking cavity through the connecting piece 12. The sample material falls vertically naturally, and the moving direction of the sampling container 11 is perpendicular to the falling direction of the raw material.

[0030] The sampling container 11 is set as a long strip-shaped cubic container. The horizontal moving direction of the sampling container 11 in the blanking cavity is perpendicular to the length direction of the sampling container 11. Since the length of the sampling container 11 is greater than its width, therefore, by adopting the aforementioned moving sampling method, on the basis of ensuring the representativeness and stability of sampling, the sampling efficiency can be effectively improved.

[0031] As an optional implementation manner, the sampling cavity 111 includes two relatively arranged side walls 113 and two relatively arranged end walls. The two end walls are vertically arranged, and the two side walls 113 are inclined. Specifically, the side walls 113 are offset in the direction from top to bottom away from their center lines. In this way, the diameter of the sampling container 11 gradually increases in the direction from top to bottom.

[0032] The inclined side wall 113 has a limiting function. When the sample material falls into the sampling cavity 111, the side wall 113 limits the raw material in a way that resists the splashing of the raw material, further improving the sampling effect.

[0033] Preferably, the two side walls 113 are symmetrically arranged, and the longitudinal cross-sectional shape of the sampling cavity 111 is an isosceles trapezoid.

[0034] The connecting member 12 is arranged as a square connecting rod. The square connecting rod is a hollow square rod. The first end of the square connecting rod is flange-connected to the moving device 13, and the sampling container 11 is arranged on the top side of the second end of the square connecting rod through a threaded fastener.

[0035] Specifically, a flange plate is arranged on the first section of the square connecting rod. A plurality of reinforcing rib plates are arranged circumferentially on the flange plate, and the reinforcing rib plates are connected to the square connecting rod, with a firm structure.

[0036] The moving device 13 is arranged as a multi-axis robot 131.

[0037] Specifically, the multi-axis robot 131 adopts a six-axis robot, including a base axis for realizing the position movement and positioning of the end sampling container 11 in three-dimensional space and a wrist axis for controlling the spatial attitude of the end sampling container 11.

[0038] Specifically, it includes a base rotation axis, a lower arm front and back swing axis, an upper arm lifting axis, a wrist rotation axis, a wrist pitching axis, and an end flange rotation axis.

[0039] The dynamic sampling device 1 further includes a vibration device 14. An installation cavity is arranged inside the second end of the square connecting rod, the vibration device 14 is arranged in the installation cavity, and the vibration device 14 is connected to the sampling container 11 through a threaded fastener.

[0040] When the sampling is completed and the sample material is transferred, the vibration device 14 is started to drive the sampling container 11 to vibrate, thus effectively avoiding the adhesion of the raw material to the cavity wall during the sampling process.

[0041] Specifically, the vibration device 14 adopts a pneumatic vibrator.

[0042] As an optional implementation manner, the particle size detection device 4 includes a weighing and screening device, and the weighing and screening device includes a total sample weighing mechanism 41, a multi-stage vibration screening mechanism 42, and a post-screening weighing mechanism 43.

[0043] The total sample weighing mechanism 41 includes a feed hopper 411, a total sample on-off component 412, and a total sample weighing sensor 413. The feed hopper 411 is fixedly arranged on the body of the weighing and screening device. The discharge end of the feeding and conveying device 3 is connected to the total sample inlet of the feed hopper 411. The total sample on-off component 412 is arranged at the total sample outlet of the feed hopper 411 and is used for controlling the on-off of the total sample outlet. The total sample weighing sensor 413 is connected to the feed hopper 411 and is used for weighing the sample material in the feed hopper 411. The total sample weighing sensor 413 is used for weighing the total weight of the sample material extracted each time.

[0044] Specifically, the total sample on-off component 412 includes an on-off plate and a telescopic component. The on-off plate is rotatably arranged on the feed hopper 411. The fixed end of the telescopic component is hinged on the feed hopper 411, and the telescopic end of the telescopic component is hinged to the on-off plate. When the telescopic component makes a telescopic movement, the on-off plate rotates, thereby blocking or conducting the total sample outlet.

[0045] The multi-stage vibration screening mechanism 42 includes a screening box 421 and a vibration driving component 422. The screening box 421 includes a box body 4211 and elastic support members 4212. The elastic support members 4212 are springs, and the number of elastic support members 4212 is set to be multiple. Their bottom ends are fixedly arranged on the support frame, and their top ends are connected to the bottom of the box body 4211. The vibration driving component 422 includes a vibration motor, and the driving end of the vibration motor is connected to the box body 4211. A plurality of screening cavities are hierarchically arranged inside the screening box 421 in the vertical direction. The total sample outlet of the feed hopper 411 is connected to the topmost screening cavity. A screening plate is arranged between two adjacent screening cavities, and the diameter of the screening holes on the screening plate gradually decreases in the vertical direction.

[0046] When screening the sample material, the vibration driving component 422 is started to drive the box body 4211 to vibrate, so that the sample material inside it vibrates, and the sample materials with different particle sizes are sequentially screened out through the plurality of screening plates.

[0047] Specifically, the number of the screening cavities is three, and the sample materials with particle sizes >5mm, 3 - 5mm, and <3mm are respectively placed in the upper-to-lower direction.

[0048] The number of the post-screening weighing mechanisms 43 is the same as that of the screening chambers. The post-screening weighing mechanisms 43 are connected to the corresponding screening chambers. The post-screening weighing mechanism 43 includes a sample hopper 431, a sample on-off component 432, and a sample weighing sensor 433. The screening chamber is connected to the sample inlet of the corresponding sample hopper 431. The sample on-off component 432 is arranged at the sample outlet of the sample hopper 431. The sample on-off component 432 is similar in structure to the total sample on-off component 412. The sample on-off component 432 is used for controlling the on-off of the sample outlet. The sample weighing sensor 433 is connected to the sample hopper 431 and is used for weighing the sample in the sample hopper 431.

[0049] When detecting the particle size, first, the total sample weighing mechanism 41 weighs the total weight of all the samples extracted each time. Then, the multi-stage vibrating screening mechanism 42 vibrates and screens the samples, and transports the samples with different particle sizes to the corresponding post-screening weighing mechanisms 43 respectively. The post-screening weighing mechanisms 43 weigh the samples with corresponding particle sizes, thereby obtaining the proportion of samples with different particle sizes.

[0050] As an optional implementation manner, the particle size detection device 4 includes a particle size visual detection device 44. The particle size visual detection device 44 is mainly used for detecting small particle size samples. Specifically, it is used for detecting particle sizes less than 3 mm, and can calculate the proportion distribution of particle sizes less than 0.5 mm, 0.5 - 1 mm, and 1 - 3 mm.

[0051] The particle size visual detection device 44 includes a vibrating feeder 441, a detection box 442, and a visual detection component. The feeding end of the vibrating feeder 441 is connected to the lowermost screening chamber.

[0052] The discharging end of the vibrating feeder 441 is arranged inside the detection box 442. The vibrating feeder 441 makes the sample particles disperse and arrange orderly according to the particle size through high-frequency vibration of electromagnetic sine waves, and moves forward in sequence, and finally presents a curtain-like material linear falling, which is convenient for the visual detection component to accurately identify the size and quantity of the material particles during the falling process of the material.

[0053] The visual detection component includes a light source component 443, a camera component 444, and a processor. The light source end of the light source component 443 is arranged in the detection box 442 to provide light inside the detection box 442. The rear side panel of the detection box 442 is made of transparent glass. The light source component 443 includes four strip-shaped light-emitting elements distributed circumferentially. The strip-shaped light-emitting elements are arranged on the light source adjustable bracket outside the detection box 442 and correspond to the transparent glass. The light source adjustable bracket can adjust the position and angle of the strip-shaped light-emitting elements. The front side panel of the detection box 442 is a background board. The background board is made of acrylic board and is not dusty, making the comparison of the sample particle size more accurate.

[0054] Further, an air curtain device is also provided inside the detection box 442 to clean the dust at key parts inside the detection box 442 by means of blowing.

[0055] The camera assembly 444 uses a high - pixel camera, which is arranged on an adjustable camera support. The adjustable camera support can adjust the position and angle of the camera assembly 444. The camera assembly 444 is used to collect the motion state of the sample material falling inside the detection box 442. Both the light source assembly 443 and the camera assembly 444 are electrically connected to the processor, and the processor can detect the proportion of each particle size through the falling motion state of the sample material.

[0056] In the actual application process, the particle size visual detection device 44 is selected and installed according to the actual needs of users.

[0057] As an optional implementation manner, the raw material particle size detection system includes a waste hopper assembly 45, and the raw material particle size detection system includes a waste conveying device 5.

[0058] Both the multi - stage vibration screening mechanism 42 and the particle size visual detection device 44 are connected to the waste feed inlet of the waste hopper assembly 45. The waste discharge outlet of the waste hopper assembly 45 is connected to the feed end of the waste conveying device 5. The discharge end of the waste conveying device 5 is arranged above the raw material conveying line 7.

[0059] In this way, the sample material after particle size detection enters the waste conveying device 5 through the waste hopper assembly 45 and returns to the raw material conveying line 7 through the waste conveying device 5.

[0060] As an optional implementation manner, a sintering crusher 6 is arranged at the upstream position of the waste conveying device 5 on the raw material conveying line 7. A blanking cavity is arranged inside the sintering crusher 6, and a sampling port 61 is communicated with the blanking cavity. An automatic sampling door is arranged at the position of the sampling port 61.

[0061] The automatic sampling door includes a door body 62 and a flipping drive assembly 63. The door body 62 is flip - pivotally arranged at the position of the sampling port 61. The flipping drive assembly 63 uses a telescopic assembly. Its fixed end is hinged on the outer wall of the sintering crusher 6, and its telescopic end is hinged to the door body 62. The flipping drive assembly 63 can drive the door body 62 to flip to open or close the sampling port 61.

[0062] In the actual application process, the dynamic sampling device 1 samples once every 5 minutes, and the single - time sampling amount is not less than 1 kg.

[0063] As an optional implementation manner, the feeding conveying device 3 and the waste conveying device 5 adopt belt conveyors.

[0064] As an alternative embodiment, the raw material particle size detection system further includes a dust removal device 8, which is connected to the sintering crusher 6, the drying device 2, and the particle size detection device 4 through corresponding dust removal pipes, and is used for absorbing and treating dust during processes such as falling and vibration.

[0065] As an alternative embodiment, the raw material particle size detection system further includes a control device. The dynamic sampling device 1, the drying device 2, the feeding and conveying device 3, the particle size detection device 4, and the waste material conveying device 5 are all electrically connected to the control device, and the control device is used to control the coordinated movement of each device.

[0066] As an alternative embodiment, to ensure the safety of the operation process, a fence is provided outside the raw material particle size detection system in the workshop.

[0067] Embodiment 3 Embodiment 3 is based on Embodiment 2: The present invention provides a raw material particle size detection method using the raw material particle size detection system, as Figure 17 shown, the raw material particle size detection method at least includes the following steps: Step (I) Dynamic sampling: The dynamic sampling device 1 works, and its sampling container 11 extends into the blanking cavity through the sampling port 61, and moves along a fixed trajectory in the blanking cavity to extract the sample material falling onto the raw material conveying line 7 in a moving extraction manner, and conveys the sample material to the drying device 2; Specifically, the dynamic sampling device 1 completes sampling once every five minutes, and the single sampling is not less than 1 kg.

[0068] Step (II) Drying: The drying device 2 dries the sample material; Step (III) Particle size detection: The feeding and conveying device 3 conveys the dried sample material to the particle size detection device 4, and the particle size detection device 4 detects the particle size proportion of the sample material.

[0069] Specifically, the extracted sample material is screened and weighed. The sample material is screened into three categories: particle size > 5 mm, particle size 3 - 5 mm, and particle size < 3 mm, and are respectively weighed to obtain the total weight of the sample material, the weight of the sample material with particle size > 5 mm, the weight of the sample material with particle size 3 - 5 mm, and the weight of the sample material with particle size < 3 mm. From this, the percentages of the sample materials with particle size > 5 mm, 3 - 5 mm, and < 3 mm in the total sample material are obtained.

[0070] In the actual application process, according to the actual needs of the user, by selecting and matching the particle size vision detection device 44, visual analysis is performed on the sample material with particle size < 3 mm, and the proportions of particle size 1 - 3 mm, 0.5 - 1 mm, and less than 0.5 mm can be obtained.

[0071] As an alternative embodiment, the raw material particle size detection method further includes: Step (IV) Sample recovery: The waste conveying device 5 conveys the detected sample to the raw material conveying line 7.

[0072] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0073] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meanings of "a plurality" and "several" are at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0074] In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0075] The above is only the specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A raw material particle size detection system, characterized in that, It includes a dynamic sampling device, a drying device, a feeding and conveying device, and a particle size detection device, wherein: The dynamic sampling device, the drying device, and the particle size detection device are arranged in sequence along the sample conveying direction; The dynamic sampling device can extract the falling sample by moving along a fixed trajectory and convey it to the drying device; the drying device is connected to the particle size detection device through the feeding and conveying device, and the drying device is used for drying the extracted sample; the particle size detection device is used for detecting the proportion of the particle size of the sample.

2. The raw material particle size detection system according to claim 1, wherein, The dynamic sampling device includes a sampling container, a connecting piece, and a moving device, wherein: A sampling chamber is arranged inside the sampling container, and the top side of the sampling chamber is open; The sampling container is connected to the moving device through the connecting piece; The moving device can drive the sampling container to move along a fixed trajectory in the blanking chamber through the connecting piece to extract the raw material falling in the blanking chamber by movement.

3. The raw material particle size detection system according to claim 2, wherein The moving device can drive the sampling container to move horizontally in the blanking chamber through the connecting piece. The sampling container is set as a long strip-shaped cubic container, and the horizontal moving direction of the sampling container in the blanking chamber is perpendicular to the length direction of the sampling container.

4. The raw material particle size detection system according to claim 3, characterized in that Two opposite side walls of the sampling chamber are inclined, and the caliber of the sampling container gradually increases in width from top to bottom; The connecting piece is set as a square connecting rod. The first end of the square connecting rod is connected to the moving device, and the sampling container is arranged on the top side of the second end of the square connecting rod; The moving device is set as a multi-axis robot; The dynamic sampling device further includes a vibration device, and the vibration device is connected to the sampling container.

5. The raw material particle size detection system according to claim 1, characterized in that The particle size detection device includes a weighing and screening device, and the weighing and screening device includes a total sample weighing mechanism, a multi-stage vibration screening mechanism, and a post-screening weighing mechanism, wherein: The total sample weighing mechanism includes a feed hopper, a total sample on-off component, and a total sample weighing sensor. The discharge end of the feeding and conveying device is connected to the total sample feed inlet of the feed hopper. The total sample on-off component is arranged at the total sample discharge outlet of the feed hopper for controlling the on-off of the total sample discharge outlet. The total sample weighing sensor is connected to the feed hopper for weighing the sample in the feed hopper; The multi-stage vibration screening mechanism includes a screening box and a vibration driving component. The screening box includes a box body and a plurality of elastic support members arranged at the bottom of the box body. The vibration driving component is connected to the box body and can drive the box body to vibrate. A plurality of screening chambers are arranged in the box body in a hierarchical manner in the vertical direction, and a screening plate is arranged between adjacent screening chambers; The number of the post-screening weighing mechanisms is the same as the number of the screening chambers. The post-screening weighing mechanism is connected to the corresponding screening chamber. The post-screening weighing mechanism includes a sample hopper, a sample on-off component, and a sample weighing sensor. The screening chamber is connected to the sample feed inlet of the corresponding sample hopper. The sample on-off component is arranged at the sample discharge outlet of the sample hopper for controlling the on-off of the sample discharge outlet. The sample weighing sensor is connected to the sample hopper for weighing the sample in the sample hopper.

6. The raw material particle size detection system according to claim 5, characterized in that, The particle size detection device includes a particle size visual detection device, and the particle size visual detection device includes a vibrating feeder, a detection box and a visual detection component, where: The feeding end of the vibrating feeder is connected to the bottommost screening chamber, the discharging end of the vibrating feeder is arranged in the detection box, and the vibrating feeder makes the sample particles disperse and arrange in an orderly manner according to the particle size through high-frequency vibration of electromagnetic sine waves, and moves forward in sequence; The visual detection component includes a light source component, a camera component and a processor. The light source end of the light source component is arranged in the detection box to provide light for the inside of the detection box. The camera component is used to collect the movement state of the sample in the detection box. Both the light source component and the camera component are electrically connected to the processor, and the processor can detect the particle size of the sample through the movement state of the sample.

7. The raw material particle size detection system according to claim 2, characterized in that, The raw material particle size detection system includes a waste discharge hopper component, and the raw material particle size detection system includes a waste discharge conveying device, where: The particle size detection device is connected to the feeding end of the waste discharge conveying device through the waste discharge hopper component, and the discharging end of the waste discharge conveying device is arranged above the raw material conveying line.

8. The raw material particle size detection system according to claim 7, characterized in that A sintering crusher is arranged at the upstream position of the raw material conveying line relative to the waste discharge conveying device, where: A feeding cavity is arranged in the sintering crusher, a sampling port is communicated with the feeding cavity, and an automatic sampling door is arranged at the position of the sampling port; The automatic sampling door includes a door body and a flipping drive component. The door body is flipably arranged at the position of the sampling port, and the flipping drive component is connected to the door body and can drive the door body to flip to open or close the sampling port.

9. A raw material particle size detection method using the raw material particle size detection system described in any one of claims 1 to 8, characterized in that, It at least includes the following steps: Step (I) Dynamic sampling: The dynamic sampling device moves along a fixed track, extracts the sample falling onto the raw material conveying line in a moving extraction manner, and conveys the sample to the drying device; Step (II) Drying: The drying device dries the sample; Step (III) Particle size detection: The feeding and conveying device conveys the dried sample to the particle size detection device, and the particle size detection device detects the particle size proportion of the sample.

10. The raw material particle size detection method according to claim 9, wherein The raw material particle size detection method further includes step (IV) Sample recovery: The waste discharge conveying device conveys the detected sample to the raw material conveying line.

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