Granule quality detection device and method

Abstract

The invention relates to the technical field of granule detection, and discloses a granule quality detection device and method, the granule quality detection device comprises a detection barrel, the bottom of the detection barrel is fixedly provided with a base, and the granule quality detection device also comprises a detection assembly arranged on the detection barrel and the base, and the detection assembly is used for detecting the moisture content of granules; the display marking assembly is arranged between the detection barrel and the base, the display marking assembly is further connected with the detection assembly, and the display marking assembly is used for displaying and marking the result of the detected granules. Through the arrangement of the detection assembly and the display marking assembly, the moisture content of the aggregate can be clearly and intuitively marked in three colors, the situation that a detection result is wrongly read is avoided, a marking pen only marks detection marking points on drawing paper, redundant points are not marked on the drawing paper, and the detection accuracy is improved. The whole detection process is simple, efficient and visual, and the use effect and the detection precision of the equipment are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of granular material detection, and particularly relates to a quality detection device and method for granular materials. Background Art

[0002] Granular materials refer to substances composed of many particles. The physical properties of these particles, such as shape, size, density, etc., may vary. Usually, under certain external conditions, these particles exhibit a certain fluidity. The quality detection of granular materials is to conduct a series of inspections and evaluations on particulate substances (such as sand and gravel, minerals, powders, etc.) (detecting the quality of granular materials, particle size distribution, density, water content and other characteristics) to ensure that they meet relevant standards and requirements and satisfy the needs of use or production.

[0003] At present, although the quality detection device for granular materials can detect the water content of granular materials, the existing detection methods are usually relatively complex and the operation process is cumbersome. In addition, the traditional detection methods lack intuitiveness in result display, resulting in the detection results being not easily understood and judged quickly. This situation may cause operators to misinterpret the detection results, and then lead to misjudgment of the water content of granular materials, thus affecting the accuracy and efficiency of the subsequent processing process. This not only reduces the reliability of detection, but also limits its effect in practical applications. Therefore, it is urgent to design a quality detection device for granular materials to improve the accuracy of detection and operation convenience. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose a quality detection device and method for granular materials.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions: A quality detection device for granular materials includes a detection barrel, and a base is fixedly installed at the bottom of the detection barrel. The device further includes: A detection component, which is arranged on the detection barrel and the base, and is used for detecting the water content of granular materials; A display and marking component, which is arranged between the detection barrel and the base, and is also connected to the detection component, and is used for displaying and marking the results of detecting granular materials; The display and marking component includes: a driving mechanism and a marking mechanism. The driving mechanism and the marking mechanism are connected to each other, and the driving mechanism is used to connect with the detection component to drive the marking mechanism to mark.

[0006] As a further technical solution of the present invention, the detection component includes: electrodes. There are two electrodes, and the two electrodes are symmetrically arranged. The surfaces of the two electrodes are fixedly installed inside the inner wall of the detection barrel. The opposite ends of the two electrodes are located inside the detection barrel, and wires are fixedly installed at both ends of the two electrodes away from each other.

[0007] As a further technical solution of the present invention, an electromagnet with a built-in power source is installed at the bottom of the detection barrel, and the other two ends of the two wires are electrically connected to the electromagnet. A first spring rod is vertically and fixedly installed on the top of the base. The fixed end and the telescopic end of the first spring rod are slidably connected by a spline, and a magnetic block is horizontally and fixedly installed at the top of the telescopic end of the first spring rod.

[0008] As a further technical solution of the present invention, the driving mechanism includes: a roller, the roller is rotatably installed at the end of the magnetic block, a fixed disk is rotatably arranged on the side of the magnetic block, and the side of the fixed disk is fixedly installed at the center of the end face of the roller through a connecting shaft. A friction plate is vertically and fixedly installed at the bottom of the detection barrel, and the roller is in contact with the side of the friction plate.

[0009] As a further technical solution of the present invention, a rotating rod is horizontally rotatably installed at the center of the end face of the fixed disk. The end of the rotating rod is rotatably installed with an L-shaped frame connected to the side of the magnetic block. A sliding disk is slidably sleeved on the surface of the rotating rod. Two symmetrically arranged L-shaped rods are fixed on the back of the sliding disk. A straight spring is sleeved on the surface of the rotating rod, and the two ends of the straight spring are respectively rotatably arranged on the opposite sides of the fixed disk and the sliding disk.

[0010] As a further technical solution of the present invention, an annular groove is formed on the front surface of the sliding disk. A plurality of uniformly distributed sliders are slidably installed inside the annular groove. The end face of each slider is rotatably installed with a second connecting rod. The other end of each second connecting rod is rotatably installed with a rectangular block. The side of each rectangular block is rotatably installed with a first connecting rod, and the tops of the plurality of first connecting rods are rotatably installed in a ring at one end of the fixed disk.

[0011] As a further technical solution of the present invention, the marking mechanism includes: a box body, the box body is arranged between the vertical sides of the two L-shaped rods, and the vertical sides of the two L-shaped rods are respectively fixedly installed on the opposite sides of the box body. Three uniformly distributed second spring rods are horizontally fixed on one side inside the box body. The fixed end and the telescopic end of each second spring rod are slidably connected by a spline, and a marking pen is fixedly installed at the telescopic end of each second spring rod. The tops of the three marking pens all pass through the box body, and the colors of the three marking pens are all different.

[0012] As a further technical solution of the present invention, ramp columns are uniformly distributed on the outside of the box body. The end of each ramp column passes through one side of the box body, and the surface of the ramp column and the inner wall of the box body are slidably connected by a spline. The end of each ramp column is rotatably installed with a movable rod, the end of each movable rod is rotatably installed with a U-shaped rod, and the sizes of the three U-shaped rods increase in sequence. The corresponding vertical sides of the three U-shaped rods are respectively fixedly installed on the surface of the telescopic ends of the three second spring rods.

[0013] As a further technical solution of the present invention, a drawing board is vertically and fixedly installed at the bottom of the detection barrel, and drawing paper is pasted on the drawing board. A first baffle, a second baffle, and a third baffle are vertically and fixedly installed at the bottom of the detection barrel in a sequentially arranged distribution, and the second baffle and the third baffle are convex.

[0014] A method for using a quality detection device for granular materials includes the following steps: S1: First, place the granular materials inside the detection barrel. Then, the granular materials will contact the electrode and energize the electromagnet. After the electromagnet is energized, it has magnetic force to attract the magnetic block. S2: If the moisture content of the granular materials is low, the current passing through the electromagnet is small, the suction force of the electromagnet on the magnetic block is small, and the magnetic block will only move upward by a certain distance. The movement of the magnetic block drives the roller, the box body, and all the connecting components thereon to move upward. Due to the setting of the friction plate, the roller will rotate when moving upward. The rotation of the roller drives the fixed disk, the first connecting rod, the rectangular block, the second connecting rod, and the slider to rotate. Due to the centrifugal force, the rectangular block will also move away from the rotating rod when rotating. The movement of the rectangular block drives the sliding disk to slide on the rotating rod through the second connecting rod. The movement of the sliding disk drives the box body to move through the L-shaped rod. The movement of the box body drives the marker pen and the connecting components thereon to move horizontally, so as to ensure that the marker pen will not contact the drawing paper when it does not reach the specified position during this detection. In addition, when the box body drives the ramp column to move upward, due to the limiting effect of the second baffle and the third baffle on two of the ramp columns, when two of the ramp columns contact the second baffle and the third baffle, the corresponding two ramp columns will move into the box body. The movement of the ramp column drives the movable rod to move, and the movement of the movable rod drives two of the U-shaped rods to move. The movement of two of the U-shaped rods drives the telescopic ends of two second spring rods to move and causes the second spring rods to generate elastic force. The movement of the telescopic ends of the second spring rods drives the marker pen to move into the box body, so as to retract two of the marker pens, ensuring that only one marker pen will mark on the drawing paper during marking. When the upward movement of the magnetic block ends, the roller stops rotating, and the sliding disk will be reset under the elastic force of the straight spring. The reset of the sliding disk drives the box body and the connecting components thereon to reset. The first baffle, the second baffle, and the third baffle are wide enough so that during the movement of the box body, the ramp column can always contact the corresponding baffle. Then, the movement of the box body will drive the marker pen to move and reset. Since two of the marker pens are retracted inside the box body, the corresponding marker pens will mark red unqualified marks on the drawing paper. S3: If the moisture content of the granular materials is normal, the current passing through the electromagnet is normal, and the suction force of the electromagnet on the magnetic block is normal. At this time, the magnetic block will move upward by a longer distance. Then, the first baffle and the third baffle will limit two of the ramp columns. Further, the marker pens on both sides will retract into the box body. When the magnetic block stops moving upward, the box body drives the marker pen to reset, and the middle marker pen will mark a green qualified mark on the drawing paper. S4: If the moisture content of the granular material is relatively high, the current passing through the electromagnet is relatively large, and the suction force of the electromagnet on the magnetic block is large. At this time, the magnetic block will move upward by a large distance, and then the first baffle and the second baffle will limit the two ramp columns. Correspondingly, the two marker pens will retract into the box body. When the magnetic block stops moving upward, the box body drives the marker pens to reset, and the corresponding marker pens will mark a yellow unqualified mark on the drawing paper; S5: Finally, after the moisture content detection of the granular material is completed, just disconnect the power supply, and the pulling force generated by the first spring rod can reset the magnetic block. During the reset of the magnetic block, the box body will drive the marker pens away from the drawing paper to avoid marking redundant marking points on the drawing paper, making the result on the drawing paper clear and intuitive.

[0015] The beneficial effects of the present invention are as follows: First, in the present invention, through the settings of the detection component and the display and marking component, the moisture content of the granular material can be marked clearly and intuitively in three colors, avoiding misinterpretation of the detection results. Moreover, the marker pens will only mark the detection marking points on the drawing paper and will not mark redundant points on the drawing paper. The whole detection process is simple, efficient and intuitive, effectively improving the use effect and detection accuracy of the equipment; Second, in the present invention, through the setting of the display and marking component, every time during detection, when the two ramp columns contact the corresponding two baffles, the ramp columns will be forced to move into the box body. The movement of the ramp columns drives the telescopic ends of the movable rod, the U-shaped rod and the second spring rod to move together. The second spring rod generates an elastic force to retract the marker pens into the box body, so as to ensure that only one marker pen will contact the drawing paper for marking during marking, ensuring the clarity and intuitiveness of the marking points. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a quality detection device for granular materials proposed by the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the detection barrel of a quality detection device for granular materials proposed by the present invention; Figure 3 It is a schematic structural diagram of the quality detection device for granular materials proposed by the present invention after removing the detection barrel; Figure 4 It is a schematic diagram of the magnetic block and its connection structure of a quality detection device for granular materials proposed by the present invention; Figure 5 is Figure 4 The enlarged schematic diagram of part A in Figure 6 It is a schematic diagram of the box body and three baffle structures of a quality detection device for granular materials proposed by the present invention; Figure 7Schematic cross-sectional structure diagram of the box body of a quality detection device for pellets proposed by the present invention.

[0017] In the figure: 1, detection barrel; 2, base; 3, electrode; 4, wire; 5, electromagnet; 6, magnetic block; 7, first spring rod; 8, friction plate; 9, drawing board; 10, roller; 11, L-shaped frame; 12, box body; 13, fixed disk; 14, sliding disk; 15, rotating rod; 16, straight spring; 17, first connecting rod; 18, second connecting rod; 19, rectangular block; 20, annular groove; 21, L-shaped rod; 22, first baffle; 23, second baffle; 24, third baffle; 25, second spring rod; 26, marker pen; 27, ramp column; 28, movable rod; 29, U-shaped rod. Detailed implementation manners

[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to the attached Figure 1 - attached Figure 7 , a quality detection device for pellets, including a detection barrel 1, a base 2 is fixedly installed at the bottom of the detection barrel 1, and further includes: a detection component and a display and marking component. The detection component is arranged on the detection barrel 1 and the base 2, and the detection component is used to detect the moisture content of the pellets. The display and marking component is arranged between the detection barrel 1 and the base 2, and the display and marking component is also connected to the detection component, and the display and marking component is used to display and mark the result of detecting the pellets. The display and marking component includes: a driving mechanism and a marking mechanism. The driving mechanism and the marking mechanism are connected to each other, and the driving mechanism is used to be connected to the detection component to drive the marking mechanism to mark; As described above, it can clearly and intuitively mark the moisture content of the pellets in three colors, avoiding the occurrence of misinterpreting the detection results.

[0021] Please refer to the attached Figure 1 - attached Figure 4, in a preferred embodiment, the detection component includes: electrodes 3. There are two electrodes 3, which are symmetrically arranged. The surfaces of the two electrodes 3 are fixedly installed inside the inner wall of the detection barrel 1. The opposite ends of the two electrodes 3 are located inside the detection barrel 1. Wires 4 are fixedly installed at both ends of the two electrodes 3 away from each other. An electromagnet 5 with a built-in power source is installed at the bottom of the detection barrel 1. The other ends of the two wires 4 are electrically connected to the electromagnet 5. A first spring rod 7 is vertically and fixedly installed on the top of the base 2. The fixed end and the telescopic end of the first spring rod 7 are slidably connected by splines. A magnetic block 6 is horizontally fixedly installed at the top of the telescopic end of the first spring rod 7; Furthermore, the granular material will contact the electrode 3 and energize the electromagnet 5. After the electromagnet 5 is energized, it has a magnetic force to attract the magnetic block 6.

[0022] Please refer to the appendix Figure 1 - appendix Figure 7 , in a preferred embodiment, the driving mechanism includes: a roller 10. The roller 10 is rotatably installed at the end of the magnetic block 6. A fixed disk 13 is rotatably arranged on the side of the magnetic block 6. The side of the fixed disk 13 is fixedly installed at the center of the end face of the roller 10 through a connecting shaft. A friction plate 8 is vertically and fixedly installed at the bottom of the detection barrel 1. The roller 10 is in contact with the side of the friction plate 8. A rotating rod 15 is horizontally rotatably installed at the center of the end face of the fixed disk 13. An L-shaped frame 11 connected to the side of the magnetic block 6 is rotatably installed at the end of the rotating rod 15. A sliding disk 14 is slidably sleeved on the surface of the rotating rod 15. Two symmetrically arranged L-shaped rods 21 are fixed on the back of the sliding disk 14. A straight spring 16 is sleeved on the surface of the rotating rod 15. The two ends of the straight spring 16 are respectively rotatably arranged on the opposite sides of the fixed disk 13 and the sliding disk 14. An annular groove 20 is formed on the front of the sliding disk 14. A plurality of uniformly distributed sliders are slidably installed inside the annular groove 20. A second connecting rod 18 is rotatably installed at the end face of each slider. The other end of each second connecting rod 18 is rotatably installed with a rectangular block 19. A first connecting rod 17 is rotatably installed on the side of each rectangular block 19. The tops of the plurality of first connecting rods 17 are rotatably installed in a ring at one end of the fixed disk 13; Specifically, the movement of the sliding disk 14 drives the box body 12 to move through the L-shaped rod 21. The movement of the box body 12 drives the marker pen 26 and its connecting components to move horizontally, so as to ensure that the marker pen 26 will not contact the drawing paper when it does not reach the specified position during this detection.

[0023] Please refer to the appendix Figure 1 - appendix Figure 7, in a preferred embodiment, the marking mechanism includes: a box body 12, the box body 12 is arranged between the vertical sides of two L-shaped rods 21, and the vertical sides of the two L-shaped rods 21 are respectively fixedly installed on the opposite sides of the box body 12. Three uniformly distributed second spring rods 25 are horizontally fixed on one side inside the box body 12. The fixed end and the telescopic end of each second spring rod 25 are slidably connected by splines, and a marking pen 26 is fixedly installed at the telescopic end of each second spring rod 25. The tops of the three marking pens 26 all pass through the box body 12, and the colors of the three marking pens 26 are all different. Slope columns 27 are uniformly distributed on the outer side of the box body 12. The end of each slope column 27 passes through one side of the box body 12, and the surface of the slope column 27 and the inner wall of the box body 12 are slidably connected by splines. A movable rod 28 is rotatably installed at the end of each slope column 27, and a U-shaped rod 29 is rotatably installed at the end of each movable rod 28. The sizes of the three U-shaped rods 29 increase in sequence. The corresponding vertical sides of the three U-shaped rods 29 are respectively fixedly installed on the surface of the telescopic ends of the three second spring rods 25. A drawing board 9 is vertically and fixedly installed at the bottom of the detection barrel 1, and drawing paper is pasted on the drawing board 9. A first baffle 22, a second baffle 23 and a third baffle 24 are vertically and fixedly installed at the bottom of the detection barrel 1 in sequence and arranged in a row, and the second baffle 23 and the third baffle 24 are convex; Preferably, during the resetting of the magnet 6, the box body 12 will drive the marking pen 26 away from the drawing paper, so as to avoid marking redundant marking points on the drawing paper and make the result on the drawing paper clear and intuitive.

[0024] The working principle of the present invention: First, place the granular material inside the detection barrel 1, then the granular material will contact the electrode 3 and energize the electromagnet 5. After the electromagnet 5 is energized, it has a magnetic force to attract the magnet 6; If the water content of the granular material is relatively low, the current passing through the electromagnet 5 is small, and the suction force of the electromagnet 5 on the magnetic block 6 is small. The magnetic block 6 will only move upward by a certain distance. The movement of the magnetic block 6 drives the roller 10, the box body 12 and all the connecting components thereon to move upward. Due to the setting of the friction plate 8, the roller 10 will rotate when moving upward. The rotation of the roller 10 drives the fixed disk 13, the first connecting rod 17, the rectangular block 19, the second connecting rod 18 and the slider to rotate. Due to the action of centrifugal force, when the rectangular block 19 rotates, it will also move away from the rotating rod 15. The movement of the rectangular block 19 drives the sliding disk 14 to slide on the rotating rod 15 through the second connecting rod 18. The movement of the sliding disk 14 drives the box body 12 to move through the L-shaped rod 21. The movement of the box body 12 drives the marker pen 26 and the connecting components thereon to move horizontally, so as to ensure that the marker pen 26 will not contact the drawing paper when it does not reach the specified position during this detection. In addition, when the box body 12 moves upward and drives the ramp column 27 upward, due to the limiting effect of the second baffle 23 and the third baffle 24 on two of the ramp columns 27, when two of the ramp columns 27 contact the second baffle 23 and the third baffle 24, the corresponding two ramp columns 27 will move into the box body 12. The movement of the ramp column 27 drives the movable rod 28 to move. The movement of the movable rod 28 drives two of the U-shaped rods 29 to move. The movement of two of the U-shaped rods 29 drives the telescopic ends of the two second spring rods 25 to move and causes the second spring rods 25 to generate elastic force. The movement of the telescopic ends of the second spring rods 25 drives the marker pen 26 to move into the box body 12, so as to realize the contraction of two of the marker pens 26, ensuring that only one marker pen 26 will mark on the drawing paper during marking. When the upward movement of the magnetic block 6 ends, the roller 10 stops rotating, and then the sliding disk 14 will reset under the elastic force of the straight spring 16. The reset of the sliding disk 14 drives the box body 12 and the connecting components thereon to reset. It should be noted that the first baffle 22, the second baffle 23 and the third baffle 24 are wide enough so that during the movement of the ramp column 27 following the box body 12, the ramp column 27 can always contact the corresponding baffle. Then the movement of the box body 12 will drive the marker pen 26 to move and reset. Since two of the marker pens 26 are retracted into the box body 12, the corresponding marker pens 26 will mark red unqualified marks on the drawing paper; If the water content of the granular material is normal, the current passing through the electromagnet 5 is normal, and the suction force of the electromagnet 5 on the magnetic block 6 is normal. To sum up, at this time, the magnetic block 6 will move upward by a longer distance. Then the first baffle 22 and the third baffle 24 will limit two of the ramp columns 27. Further, the marker pens 26 located on both sides will retract into the box body 12. When the magnetic block 6 stops moving upward, the box body 12 drives the marker pen 26 to reset, and the middle marker pen 26 will mark a green qualified mark on the drawing paper; If the moisture content of the granular material is relatively high, the current passing through the electromagnet 5 is relatively large, and the suction force of the electromagnet 5 on the magnetic block 6 is large. Similarly, it can be known that at this time, the magnetic block 6 will move upward by a large distance, then the first baffle 22 and the second baffle 23 will limit the two ramp columns 27, and further, the two marker pens 26 will retract into the interior of the box body 12. When the magnetic block 6 stops moving upward, the box body 12 drives the marker pen 26 to reset, and correspondingly, the marker pen 26 will mark a yellow unqualified mark on the drawing paper; Finally, after the moisture content detection of the granular material is completed, just disconnect the power supply, then the pulling force generated by the first spring rod 7 can reset the magnetic block 6. And during the reset of the magnetic block 6, the box body 12 will drive the marker pen 26 away from the drawing paper to avoid marking redundant marking points on the drawing paper, making the result on the drawing paper clear and intuitive. When the magnetic block 6 is reset, all components are also reset and can be used for the next detection. The detection is convenient, fast and intuitive, thereby effectively improving the use effect and detection accuracy of the equipment.

[0025] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A quality inspection device for granular materials, comprising an inspection barrel (1), and a base (2) is fixedly installed at the bottom of the inspection barrel (1), characterized in that, It further includes: a detection component which is arranged on the detection barrel (1) and the base (2), and is used for detecting the moisture content of the pellets; a display and marking component which is arranged between the detection barrel (1) and the base (2), is also connected to the detection component, and is used for displaying and marking the result of detecting the pellets; The display and marking component includes: a driving mechanism and a marking mechanism. The driving mechanism and the marking mechanism are connected to each other, and the driving mechanism is used for connecting to the detection component to drive the marking mechanism to mark.

2. The quality inspection device for pellets according to claim 1, wherein The detection component includes: electrodes (3). There are two electrodes (3), and the two electrodes (3) are symmetrically arranged. The surfaces of the two electrodes (3) are fixedly installed inside the inner wall of the detection barrel (1), and the opposite ends of the two electrodes (3) are located inside the detection barrel (1). Wires (4) are fixedly installed at both ends of the two electrodes (3) away from each other.

3. The quality inspection device for pellets according to claim 2, characterized in that, An electromagnet (5) with a built-in power source is installed at the bottom of the detection barrel (1), and the other ends of the two wires (4) are electrically connected to the electromagnet (5). A first spring rod (7) is vertically and fixedly installed at the top of the base (2). The fixed end and the telescopic end of the first spring rod (7) are connected by spline sliding, and a magnet block (6) is horizontally fixedly installed at the top of the telescopic end of the first spring rod (7).

4. The quality inspection device for pellets according to claim 3, characterized in that, The driving mechanism includes: a roller (10). The roller (10) is rotatably installed at the end of the magnet block (6). A fixed disk (13) is rotatably arranged on the side of the magnet block (6), and the fixed disk (13) is fixedly installed at the center of the end face of the roller (10) through a connecting shaft. A friction plate (8) is vertically and fixedly installed at the bottom of the detection barrel (1), and the roller (10) is in contact with the side of the friction plate (8).

5. The quality inspection device for pellets according to claim 4, characterized in that, A rotating rod (15) is horizontally rotatably installed at the center of the end face of the fixed disk (13). The end of the rotating rod (15) is rotatably installed with an L-shaped frame (11) connected to the side of the magnet block (6). A sliding disk (14) is slidably sleeved on the surface of the rotating rod (15). Two symmetrically arranged L-shaped rods (21) are fixed on the back of the sliding disk (14). A straight spring (16) is sleeved on the surface of the rotating rod (15), and the two ends of the straight spring (16) are respectively rotatably arranged on the opposite sides of the fixed disk (13) and the sliding disk (14).

6. The quality inspection device for pellets according to claim 5, wherein, An annular groove (20) is formed on the front surface of the sliding disk (14). A plurality of uniformly distributed sliders are slidably installed inside the annular groove (20). The end face of each slider is rotatably installed with a second connecting rod (18). The other end of each second connecting rod (18) is rotatably installed with a rectangular block (19). A first connecting rod (17) is rotatably installed on the side of each rectangular block (19), and the tops of the plurality of first connecting rods (17) are rotatably installed in a ring at one end of the fixed disk (13).

7. The quality inspection device for pellets according to claim 6, wherein, The marking mechanism includes: a box body (12), the box body (12) is arranged between the vertical sides of two L-shaped rods (21), and the vertical sides of the two L-shaped rods (21) are respectively fixedly installed on the opposite sides of the box body (12). One side inside the box body (12) is horizontally and fixedly provided with three uniformly distributed second spring rods (25). The fixed end and the telescopic end of each second spring rod (25) are slidably connected through splines, and a marker pen (26) is fixedly installed at the telescopic end of each second spring rod (25). The tops of the three marker pens (26) all pass through the box body (12), and the colors of the three marker pens (26) are all different.

8. The quality inspection device for pellets according to claim 7, characterized in that, The outer side of the box body (12) is evenly distributed with ramp columns (27). The end of each ramp column (27) passes through one side of the box body (12), and the surface of the ramp column (27) and the inner wall of the box body (12) are slidably connected through splines. A movable rod (28) is rotatably installed at the end of each ramp column (27), and a U-shaped rod (29) is rotatably installed at the end of each movable rod (28). The sizes of the three U-shaped rods (29) increase in sequence, and the corresponding vertical sides of the three U-shaped rods (29) are respectively fixedly installed on the surface of the telescopic ends of the three second spring rods (25).

9. The quality inspection device for pellets according to claim 8, characterized in that, A drawing board (9) is vertically and fixedly installed at the bottom of the detection barrel (1), and drawing paper is pasted on the drawing board (9). A first baffle (22), a second baffle (23) and a third baffle (24) which are arranged in sequence are also vertically and fixedly installed at the bottom of the detection barrel (1), and the second baffle (23) and the third baffle (24) are convex.

10. The method for using a quality inspection device for pellets according to claim 9, characterized in that, It includes the following steps: S1: First, place the granular material inside the detection barrel (1). Then the granular material will contact the electrode (3) and make the electromagnet (5) energized. After the electromagnet (5) is energized, it has magnetic force to attract the magnetic block (6). S2: If the moisture content of the pellet is low, the current passing through the electromagnet (5) is small, and the suction force of the electromagnet (5) on the magnetic block (6) is small. The magnetic block (6) will only move upward by a certain distance. The movement of the magnetic block (6) drives the roller (10), the box body (12) and all the connecting components thereon to move upward. Due to the setting of the friction plate (8), the roller (10) will rotate when moving upward. The rotation of the roller (10) drives the fixed disk (13), the first connecting rod (17), the rectangular block (19), the second connecting rod (18) and the slider to rotate. Due to the centrifugal force, when the rectangular block (19) rotates, it will also move away from the rotating rod (15). The movement of the rectangular block (19) drives the sliding disk (14) to slide on the rotating rod (15) through the second connecting rod (18). The movement of the sliding disk (14) drives the box body (12) to move through the L-shaped rod (21). The movement of the box body (12) drives the marker pen (26) and the connecting components thereon to move horizontally, so as to ensure that when the marker pen (26) does not reach the specified position during this detection, it will not contact the drawing paper. In addition, when the box body (12) moves upward and drives the ramp column (27) upward, due to the limiting effect of the second baffle (23) and the third baffle (24) on two of the ramp columns (27), when two of the ramp columns (27) contact the second baffle (23) and the third baffle (24), the corresponding two ramp columns (27) will move into the box body (12). The movement of the ramp column (27) drives the movable rod (28) to move. The movement of the movable rod (28) drives two of the U-shaped rods (29) to move. The movement of two of the U-shaped rods (29) drives the telescopic ends of two of the second spring rods (25) to move and causes the second spring rods (25) to generate elastic force. The telescopic ends of the second spring rods (25) move to drive the marker pen (26) to move into the box body (12), so as to realize the contraction of two of the marker pens (26), ensuring that only one marker pen (26) will mark on the drawing paper during marking. When the upward movement of the magnetic block (6) ends, the roller (10) stops rotating, and then the sliding disk (14) will be reset under the elastic force of the straight spring (16). The reset of the sliding disk (14) drives the box body (12) and the connecting components thereon to reset. The first baffle (22), the second baffle (23) and the third baffle (24) are wide enough so that during the movement of the box body (12), the ramp column (27) can always contact the corresponding baffle. Then the movement of the box body (12) will drive the marker pen (26) to move and reset. Since two of the marker pens (26) are retracted into the box body (12), the corresponding marker pens (26) will mark red unqualified marks on the drawing paper; S3: If the moisture content of the granular material is normal, the current passing through the electromagnet (5) is normal, the suction force of the electromagnet (5) on the magnetic block (6) is normal. At this time, the magnetic block (6) will move upward a relatively long distance, then the first baffle (22) and the third baffle (24) will limit the two ramp columns (27). Further, the marker pens (26) on both sides will retract into the box body (12). When the magnetic block (6) stops moving upward, the box body (12) drives the marker pens (26) to reset, and the middle marker pen (26) will mark a green qualified sign on the drawing paper. S4: If the moisture content of the granular material is relatively high, the current passing through the electromagnet (5) is large, the suction force of the electromagnet (5) on the magnetic block (6) is large. At this time, the magnetic block (6) will move upward a large distance, then the first baffle (22) and the second baffle (23) will limit the two ramp columns (27). Correspondingly, the two marker pens (26) will retract into the box body (12). When the magnetic block (6) stops moving upward, the box body (12) drives the marker pens (26) to reset, and the corresponding marker pen (26) will mark a yellow unqualified mark on the drawing paper. S5: Finally, after the moisture content detection of the granular material is completed, just disconnect the power supply, then the pulling force generated by the first spring rod (7) can reset the magnetic block (6). And during the reset of the magnetic block (6), the box body (12) will drive the marker pens (26) away from the drawing paper to avoid marking redundant marking points on the drawing paper, making the result on the drawing paper clear and intuitive.

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