Drying degree detection device for belt dryer and detection method thereof

Abstract

The invention relates to the technical field of drying machines, in particular to a drying degree detection device for a belt type drying machine and a detection method of the drying degree detection device, and solves the defects in the prior art. The detection device comprises a detection table, a feeding mechanism, a material collecting mechanism and a detection mechanism; a control terminal with a PLC is installed on the side wall of one side of the detection table, a conveying belt is further arranged on the detection table, the feeding mechanism is arranged on one side of an inlet of the drying machine and used for periodically feeding materials, and the collecting mechanism comprises a collecting box and a bottom cover. The collecting box is installed between the inner walls of the detection table and located below the discharging position of the drying machine, the bottom cover moves below the bottom wall of the collecting box, and two second sliding seats are arranged on the side wall of one side of the collecting box in the vertical direction in a sliding mode; compared with the prior art, the detection process of the drying performance of the drying machine can be effectively realized.

Description

Technical Field

[0001] The present invention relates to the technical field of dryers, and in particular to a dryness detection device and a detection method for a belt dryer. Background Art

[0002] A belt dryer is a continuous drying equipment used for batch production and is widely used in many fields, such as pharmaceuticals, food, biology, and chemicals. The core of a belt dryer is to smoothly transport materials to a drying chamber via a conveyor belt, and to dry the materials using hot air or other heating media during this process. For a belt dryer, whether the materials can be dried to the required degree is still important. However, during the drying process, since the materials are dried in batches, due to the problem of uneven distribution of the laying, some piled-up materials are difficult to be completely dried, resulting in a certain amount of moisture in the final materials, affecting the storage or use of the materials. Therefore, it is necessary to provide a dryness detection device and detection method for a belt dryer to solve the above-mentioned problems. Summary of the Invention

[0003] The object of the present invention is to provide a dryness detection device and a detection method for a belt dryer, so as to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] A dryness detection device for a belt dryer comprises a detection platform, a feeding mechanism, a collecting mechanism, and a detection mechanism. The dryer is placed on the detection platform, and a control terminal with a PLC controller is installed on one side wall of the detection platform. A conveyor belt is also provided on the detection platform.

[0006] The feeding mechanism is arranged at the inlet side of the dryer and is used for periodic feeding of materials;

[0007] The collecting mechanism includes a collecting box and a bottom cover. The collecting box is installed between the inner walls of the testing table and is located below the discharge position of the dryer. The bottom cover is rotated by a linkage handle and is arranged below the bottom wall of the collecting box.

[0008] The detection mechanism includes a second fixing frame, an adjustment gear, an adjustment seat and a swing arm assembly;

[0009] The second fixing frame is installed on the detection table, and an "L"-shaped lifting piece passes through the second fixing frame. One end of the lifting piece slides on the outer wall of the collection box in the vertical direction. The adjusting gear is arranged on one side of the lifting piece and meshes with it for transmission. A synchronous shaft synchronized with it is arranged in the middle of the adjusting gear. The synchronous shaft is rotatably arranged on one side of the second fixing frame, and the adjusting seat slides and adjusts along the length direction of the synchronous shaft under the action of the threaded transmission. A fixed shaft sleeve is arranged on the outside of one end of the synchronous shaft, and a dial is installed on one end of the fixed shaft sleeve. The swing arm assembly is rotatably arranged on the outside of the fixed shaft sleeve, and one end of the swing arm assembly is connected to the adjusting seat. An indicator mark is installed on the other end of the swing arm assembly, and the indicator mark moves and adjusts along the trajectory of the dial.

[0010] In one embodiment, two limit stop arms are installed on the side walls of the inlet and outlet of the dryer, and a vertical bar is provided on the limit stop arm located on the side of the dryer inlet direction. Contact sensors are embedded on the side walls opposite to the two vertical bars. The contact sensors are connected to the PLC controller through electrical signals. A guide plate 1 is installed between the limit stop arms located on the side of the dryer outlet direction, and the bottom end of the guide plate 1 is arranged opposite to the collection box.

[0011] In one embodiment, the feeding mechanism includes a fixing frame 1, a sliding seat 1, a guide plate 2 and a storage barrel;

[0012] The fixing frame 1 is installed on the inspection table, and a fixing hole is opened along the length direction of the fixing frame 1. The slide seat 1 slides between the inner walls of the fixing hole, and an inner shaft sleeve is provided in the middle of the slide seat 1. A screw is rotatably provided between the end walls of the fixing hole. One end of the screw is connected to the motor 1, and the motor 1 is installed on the fixing frame 1. The screw passes through the inner shaft sleeve and is threadedly engaged with the inner shaft sleeve.

[0013] A guide shaft and a rotating shaft 1 are also provided between the side walls of the fixing frame 1. The rotating shaft 1 passes through the guide plate 2 and rotates and adjusts synchronously with it. The guide plate 2 is fixed to the limit stop arm on one side by bolts.

[0014] There are protrusions on both sides of the outer wall of the storage barrel, and the protrusions on the same side are arranged opposite to the contact sensor. There are movable and adjustable baffles on both sides of the bottom of the storage barrel, and a discharge hole is opened on the bottom wall of the storage barrel between the baffles on both sides.

[0015] In one embodiment, a discharge chute is provided at the end of the inspection platform near the dryer outlet, the conveyor belt and the collection box are both installed between the inner walls of the discharge chute, and the collection box is located above the conveyor belt;

[0016] Two slide seats 2 are provided on one side wall of the collection box for sliding in the vertical direction. An adjustment spring is provided above the slide seats 2. Two shaft seats 3 are installed on the bottom cover. A linkage handle 1 is provided between the slide seats 2 and the shaft seat 3 on the same side. A connecting shaft that always moves in the vertical direction is provided between the two slide seats 2.

[0017] Two fixing grooves 2 and one fixing groove 1 are provided on one side wall of the collection box. A vertical fixing shaft is installed in the fixing groove 2. An adjusting spring is sleeved on the fixing shaft and its top end is connected and fixed to the top wall of the fixing groove 2. One end of the slide 2 slides between the inner walls of the fixing groove 2 and the fixing shaft passes through the slide 2 and is in sliding contact with the slide 2. The bottom end of the adjusting spring contacts the top surface of the slide 2.

[0018] Two shaft seats 2 and two shaft seats 3 are also installed on the side wall of the collection box. A rotating shaft 2 is rotatably arranged between the shaft seats 2 on both sides. A fixed sleeve is installed on the bottom cover. The rotating shaft 2 passes through the fixed sleeve and is connected to it as a whole. A linkage handle 1 is provided between the shaft seat 3 and the slide seat 2 on the same side, and the connecting shaft is also provided between the ends of the slide seat 2 on both sides outside the fixed groove 2.

[0019] In one embodiment, the collecting mechanism further comprises a rotating arm, end shafts are mounted on both side walls of one end of the bottom cover, one end of the rotating arm is connected to a second motor, the second motor is mounted between the inner walls of the testing platform, and the other end of the rotating arm is a hook-shaped structure, and the rotating angle of the rotating arm is 15 degrees;

[0020] When the bottom cover is in a horizontal state, the bottom cover is in contact with the bottom wall of the collection box, and the end shaft is exactly located in the hook groove of the rotating arm;

[0021] When the material falling into the collection box after drying is not fully dried, the bottom cover opens downward under the action of the gravity of the material. At this time, the slide seat 2 moves upward along the fixed groove 2 and applies force to the adjustment spring;

[0022] When the materials falling into the collection box after drying are fully dried and the bottom cover is always kept in a horizontal position, the bottom cover is opened by the rotating arm to realize the falling of the materials.

[0023] In one embodiment, two shaft seats four are mounted on one side wall of the fixing frame two, one end of the synchronizing shaft is rotatably mounted on one of the shaft seats four, the other end of the synchronizing shaft passes through the other shaft seat four and is in rotatable contact therewith, the synchronizing shaft is further provided with a threaded portion, the adjusting seat is located on the threaded portion, and the synchronizing shaft is further provided with a convex ring connected thereto as a whole, one end of the synchronizing shaft and the convex ring are both rotatably mounted between the inner wall of the fixed sleeve;

[0024] A limiting plate connected to the adjusting seat is provided on one side thereof, and a piston shaft fixed thereto is installed on the other end of the limiting plate. The piston shaft is arranged in a "T"-shaped structure, and the piston shaft passes through the second fixing frame and is in sliding contact with the inner wall.

[0025] In one embodiment, the swing arm assembly includes a linkage handle 2 and a linkage frame, two linkage handles 2 coaxially intersecting are rotatably provided on both sides of the adjustment seat by means of an axis connection, two linkage frames are provided and the intersections are arranged on both sides of the fixed shaft sleeve, and the intersection position of the two fixed shaft sleeves and the outer surface of the fixed shaft sleeve are rotatably provided by an axis connection, the linkage handle 2 located on the same side is also connected to one end of the linkage frame by an axis connection, and the indicator mark is installed on the other end of the linkage frame;

[0026] Symmetrically arranged fixed arms are installed on both sides of the fixed sleeve, one end of the linkage frame passes through the fixed arm and is in sliding contact with it, a notch is opened on the indicator mark, and a dial passes through the notches on both sides, and the dial and the fixed arm are distributed along two different tracks of concentric circles.

[0027] A detection method for a dryness detection device of a belt dryer, comprising the following steps:

[0028] S1. First, the material is fed to the inlet of the dryer through the feeding mechanism, causing the storage cylinder to reciprocate once and then pause. The material enters the dryer for drying and falls into the collection box from the outlet.

[0029] S2. Then, as the material continues to fall into the collection box, the total weight of the dried material controls the automatic opening and closing of the bottom cover. When the material is not fully dried, the bottom cover automatically opens. At this time, the lifting member moves upward and controls the adjustment gear to rotate, so that the adjustment seat moves in a straight line toward the side close to the fixed sleeve, thereby controlling the swing arm assembly to adjust the angle between the indicator marks on both sides;

[0030] When the material is fully dried, the bottom cover is opened and closed by the rotating arm.

[0031] S3. Then, as the bottom cover opens and closes, the material falls onto the conveyor belt and continues to be transported forward. Under the action of the adjustment spring, the slide seat 2 moves downward, and drives the bottom cover to return to a horizontal state in contact with the bottom wall of the collection box through the linkage handle 1.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention provides a feeding mechanism, a collecting mechanism, and a detecting mechanism, and utilizes the feeding mechanism to realize linear cyclical feeding of materials, so that the materials can be dried in a spread manner during the drying process, and the drying degree of the dryer can be better detected. After the dried materials fall into the collecting box, the bottom cover is opened according to the weight of the dried materials. If the materials are not completely dried, the bottom cover opens automatically. If the materials are completely dried, the bottom cover needs to be opened by a rotating arm. In the case that the materials are not completely dried, the positions of the two indicator marks are adjusted according to the detection mechanism in cooperation with the lifting member, and the drying degree performance of the dryer is indirectly judged by the angle between the two indicator marks. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0035] In the attached figure:

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

[0037] Figure 2 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0038] Figure 3 It is a structural schematic diagram of the material collecting mechanism of the present invention;

[0039] Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention;

[0040] Figure 5 It is a connection diagram of the synchronous shaft, threaded portion, convex ring and fixed sleeve of the present invention.

[0041] In the figure: 1. Inspection table; 11. Control terminal; 12. Conveyor belt; 13. Shaft seat 1; 14. Discharge chute; 2. Dryer; 3. Limiting arm; 31. Contact sensor; 32. Guide plate 1; 4. Feeding mechanism; 41. Fixing frame 1; 411. Fixing hole; 412. Motor 1; 413. Screw; 414. Guide shaft; 42. Slide seat 1; 43. Guide plate 2; 431. Rotating shaft 1; 44. Storage barrel; 441. Baffle; 442. Bump; 5. Collection mechanism; 51. Collection box; 511. Fixing trough 1; 512. Fixing trough 2; 513. Fixed shaft; 514. Shaft seat 2; 52. Bottom Cover; 521, shaft seat three; 522, end shaft; 53, slide seat two; 531, connecting shaft; 54, linkage handle one; 55, rotating arm; 551, motor two; 56, fixing sleeve; 561, rotating shaft two; 6, detection mechanism; 61, fixing frame two; 611, shaft seat four; 62, lifting member; 63, adjusting gear; 631, synchronous shaft; 6311, threaded part; 6312, convex ring; 64, fixing sleeve; 641, fixed arm; 642, dial; 643, L bracket; 65, adjusting seat; 66, limit plate; 661, piston shaft; 67, linkage handle two; 68, linkage frame; 681, indicator mark. DETAILED DESCRIPTION

[0042] The disclosure below provides many different embodiments or examples for realizing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art will appreciate the application of other processes and / or the use of other materials.

[0043] like Figure 1As shown, the present invention provides a technical solution: a dryness detection device for a belt dryer, comprising a detection platform 1, a feeding mechanism 4, a collecting mechanism 5 and a detection mechanism 6. A control terminal 11 with a PLC controller is installed on one side wall of the detection platform 1 by screws. The dryer 2 is installed on the detection platform 1 (the test object in this embodiment is a belt dryer). The two ends of the conveyor belt of the dryer 2 are located outside it. Rollers are passed through both ends of the conveyor belt. Two oppositely arranged shaft seats 13 are installed on both sides of the top surface of the detection platform 1 by bolts. The rollers are rotated. Between the two shaft seats 13 on the same side, and a driving motor (the driving motor is a rotating motor) is connected to one end of the roller shaft to drive it, and the driving motor is installed on the side wall of the shaft seat 13. The feeding mechanism 4 is arranged above one end of the conveyor belt, and the collecting mechanism 5 is arranged below the other end of the conveyor belt 12. The detection mechanism 6 is arranged above the collecting mechanism 5. A discharge trough 14 is opened at one end of the detection platform 1, and a conveyor belt 12 is installed in the discharge trough 14. The motor that drives the conveyor belt 12 is installed inside the side wall of the detection platform 1 (not shown in the figure).

[0044] The feeding mechanism 4 intermittently feeds the material onto the conveyor belt. After being dried in the dryer 2, the material falls from the other end of the conveyor belt to the collecting mechanism 5. The weight difference of the material before and after drying controls whether the outlet of the collecting mechanism 5 can be opened. The degree of opening of the collecting outlet is reflected by the detection mechanism 6 to determine the degree of drying.

[0045] like Figure 2 As shown, the feeding mechanism 4 includes a fixing frame 41, a slide 42, a guide plate 43 and a storage barrel 44;

[0046] The fixing frame 41 is arranged in a "U"-shaped structure. The bottom end of the fixing frame 41 is fixed to the top surface of the detection platform 1 by bolts. A guide shaft 414 is fixedly installed between the two opposite side walls of the fixing frame 41, and a rotating shaft 431 is arranged below the guide shaft 414. The rotating shaft 431 is rotatably arranged between the two side walls of the fixing frame 41. A fixing hole 411 is opened on the fixing frame 41 above the guide shaft 414. The fixing hole 411 is arranged along the length direction of the fixing frame 41. A screw 413 is rotatably arranged in the fixing hole 411. One end of the screw 413 is connected to a motor 412. The motor 412 is a rotating motor, and the motor 412 is mounted on one side outer wall of the fixing frame 41 by bolts.

[0047] The longitudinal section of the slide 42 is in the shape of an I, and the slide 42 slides between the inner walls of the fixing hole 411. An inner sleeve connected to the slide 42 is fixedly installed in the middle of the slide 42, and the screw 413 passes through the inner sleeve and is arranged with the inner sleeve through threaded transmission.

[0048] The second guide plate 43 is set at an angle, and the first rotating shaft 431 passes through the second guide plate 43 and is connected and fixed thereto. The bottom end of the second guide plate 43 is set in contact with the upper surface of the conveyor belt, and the second guide plate 43 is fixed between the two limit arms 3 on the inlet side of the dryer 2 by bolts.

[0049] A fixing block (not shown in the figure) is installed on the side wall of the storage barrel 44 facing the fixed frame 41 by screws, and the guide shaft 414 passes through the fixed block and slides in contact with it. Bumps 442 are installed on the other two side outer walls of the storage barrel 44 by screws, and detachable limit stop arms 3 are installed on the two side walls at the inlet and outlet positions of the dryer 2 by screws, wherein the limit stop arm 3 on the side close to the position of the fixed frame 41 is also provided with a vertical bar connected to the limit stop arm 3, and a contact sensor 31 is embedded on the side wall of the vertical bar facing the storage barrel 44, and the contact sensor 31 is connected to the PLC controller through an electrical signal, wherein the bump 442 is arranged opposite to the contact sensor 31, and when the bump 442 on one side contacts the contact sensor 31, the contact sensor 31 on that side is triggered, thereby changing the output direction of the motor 412 through the PLC controller, so that the slide 42 can move back and forth in the fixing hole 411.

[0050] A connecting plate is installed between the inner wall of one side of the storage barrel 44 and one side wall of the slide 42 by screws. A discharge hole is opened at the bottom of the storage barrel 44, and baffles 441 are provided on both sides of the discharge hole. Two electric push rods are installed on the outer walls of both sides of the storage barrel 44 by screws. The output end of the electric push rod is connected and fixed to one end wall of the baffle 441. The adjustment position of the baffles 441 on both sides is controlled by the PLC controller according to the different materials, thereby controlling the actual size of the discharge hole, thereby controlling the discharge amount of different materials.

[0051] It should be further explained that by placing the material in the storage barrel 44, the PLC controller adjusts the outlet volume of the discharge hole according to the different materials, and drives the storage barrel 44 to transfer the material back and forth above the loading position of the conveyor belt in a straight line direction through the cooperation of the screw 413 and the slide 42. After the storage barrel 44 moves back and forth once, the PLC controller pauses the motor 412 and also closes the baffles 441 on both sides. When the baffles 441 on both sides are closed, they and the side walls on both sides of the storage barrel 44 completely close the discharge hole.

[0052] like Figure 3 As shown, the material collecting mechanism 5 includes a collecting box 51, a bottom cover 52, a second slide 53, a linkage handle 1 54 and a rotating arm 55;

[0053] The collecting box 51 is fixed between the inner walls of the discharge trough 14 by bolts, and the collecting box 51 is located below the end of the conveyor belt, and an arc-shaped guide plate 32 is installed between the limit arms 3 on both sides of the end of the conveyor belt by screws, and the bottom end of the guide plate 32 is arranged opposite the collecting box 51, and the top and bottom ends of the collecting box 51 are open, and the inner wall surfaces of the two sides of the interior of the collecting box 51 along its width direction are inclined, and a fixing groove 1 511 and a fixing groove 2 512 are respectively opened in the vertical direction on the outer wall of one side of the collecting box 51, and there are two fixing grooves 2 512. A fixing shaft 513 is inserted and fixed between the inner walls of the fixing groove 2 512, and the outer sleeve of the fixed shaft 513 is provided with a replaceable adjustment spring, and two relatively arranged shaft seats 2 514 are also installed on the side walls of the collecting box 51 by screws.

[0054] The bottom cover 52 is arranged below the bottom wall of the collection box 51. Two oppositely arranged shaft seats 3 521 are installed on the top surface of the bottom cover 52 by screws, and a fixing sleeve 56 is also installed on the top surface of the bottom cover 52 by screws. A rotating shaft 2 561 synchronized with the fixing sleeve 56 passes through the fixing sleeve 56, and the rotating shaft 2 561 is rotatably arranged between the shaft seats 2 514 on both sides.

[0055] One end of the slide 2 53 slides between the inner walls of the fixed groove 2 512, the fixed shaft 513 passes through the slide 2 53 and slides in contact with it, the top of the adjusting spring is connected and fixed to the top wall of the fixed groove 2 512, and the bottom end of the adjusting spring is in contact with the top surface of the slide 2 53. The slides 2 53 on both sides are placed between the ends outside the fixed groove 2 512 and are rotatably provided with a connecting shaft 531, and a linkage handle 1 54 is provided between the shaft seat 3 521 located on the same side and the side wall of the other side of the slide 2 53 through an axis connection.

[0056] End shafts 522 are installed on both side walls of the bottom cover 52 by means of threaded connections, and circular grooves (not shown in the figure) are provided between the inner walls of the test bench 1 on both sides of the bottom cover 52. A rotating arm 55 is rotatably arranged in the circular groove. One end of the rotating arm 55 is in contact with the end shaft 522, and the other end of the rotating arm 55 is connected to motor 2 551. Motor 2 551 is a rotating motor, and motor 2 551 is installed between the inner walls of the test bench 1 (i.e., located on the other side of the circular groove) by screws.

[0057] It should be noted that the rotation center of the rotating arm 55 is arranged colinearly with the rotation center of the second rotating shaft 561; when the bottom cover 52 is in horizontal contact with the bottom wall of the collection box 51, the end shaft 522 is just located in the hook groove of the rotating arm 55, and the rotating arm 55 is at the lowest position in its rotation process (which is also the initial position).

[0058] It should be further explained that as the dried material gradually falls into the collecting box 51 and falls on the bottom cover 52, the bottom cover 52 is in a horizontal state and contacts the bottom wall of the collecting box 51, and the slide 2 53 is located at the bottom end of the fixed groove 2 512. As the material gradually increases, the weight of the material on the bottom cover 52 also gradually increases. Because the storage barrel 44 is in a paused state after moving back and forth once, after being dried by the dryer 2, the fallen material also falls into the collecting box 51. The opening and closing process of the bottom cover 52 is controlled according to the difference between the total weight of the dried material and the force of the adjusting spring on the slide 2 53. When the material is fully dried, the bottom cover 52 is opened and closed. (i.e. the drying requirements are met), the bottom cover 52 cannot be opened automatically. At this time, the PLC controller starts the second motor 551, which drives the rotating arm 55 to rotate. The rotation angle of the second motor 551 is always 15 degrees, so that the rotating arm 55 lifts the end shaft 522 to the upper side, so that the bottom cover 52 rotates and opens around the second rotating shaft 561 under the action of the end shaft 522, and the dried material falls onto the conveyor belt 12 and continues to be transported forward; when the material is not fully dried (i.e. there is still a certain amount of moisture in the material and the drying requirements are not met), the bottom cover 52 automatically opens under the action of the weight of the material, and the fallen material is also transported forward with the conveyor belt 12.

[0059] During the rotation of the bottom cover 52, it rotates synchronously with the fixed sleeve 56 around the rotating shaft 2 561, so that the shaft seat 3 521 moves upward, and the sliding seat 2 53 is controlled to slide upward along the fixed groove 2 512 through the linkage handle 1 54, and exerts a force on the adjusting spring. When the material falls, the sliding seat 2 53 slides downward under the reaction force of the adjusting spring, and drives the shaft seat 3 521 to move downward through the linkage handle 1 54, so that the bottom cover 52 gradually returns to a horizontal state, and finally stays in a horizontal position and contacts the bottom wall of the collection box 51.

[0060] The opening method of the bottom cover 52 is described in detail as follows:

[0061] The total weight of the material falling in the storage barrel 44 during a round trip is recorded as M, the total weight of the material after drying is recorded as m, and the weight of the material when it reaches the drying standard is recorded as n. The total force of the adjusting springs on both sides on the slide 2 53 is set according to the weight of n. When m is less than or equal to n, the bottom cover 52 always maintains contact with the bottom wall of the collection box 51, which means that the dryness of the material has reached the standard requirement. Only when m is greater than n, the bottom cover 52 starts to rotate downward for adjustment, which also means that the dryness of the material at this time does not meet the standard requirement.

[0062] like Figure 4-5As shown, the detection mechanism 6 includes a second fixing frame 61, a lifting member 62, an adjusting gear 63, a fixed shaft sleeve 64, an adjusting seat 65, a limiting piece 66 and a swing arm assembly, and the swing arm assembly includes a second linkage handle 67 and a linkage frame 68;

[0063] The second fixing frame 61 has a U-shaped structure and its bottom end is fixed to the test platform 1 by bolts. Two oppositely arranged shaft seats 4 611 are installed on the side walls of the second fixing frame 61 by screws.

[0064] The lifting member 62 is an L-shaped strip. The top end of the lifting member 62 passes through the inner wall of the fixing frame 2 61 and slides in contact with it. The bottom end of the lifting member 62 slides between the inner walls of the fixing groove 1 511, and the connecting shaft 531 passes through the inner wall of the bottom end of the lifting member 62.

[0065] Tooth grooves are evenly provided on the vertical side walls of one side of the lifting member 62, and an adjusting gear 63 is engaged with one side of the tooth groove. A synchronous shaft 631 that rotates synchronously with the adjusting gear 63 passes through the middle of the adjusting gear 63, and one end of the synchronous shaft 631 rotates between the inner walls of one of the four shaft seats 611, and the other end of the synchronous shaft 631 passes through the other four shaft seats 611 and rotates in contact with it. A threaded portion 6311 is also provided on the synchronous shaft 631, and a convex ring 6312 is installed on the outer wall of the synchronous shaft 631 near one end by screws. An L bracket 643 is installed on one side wall of the testing platform 1 by bolts, and a fixed shaft sleeve 64 is fixed to the top of the L bracket 643 by screws. One end of the synchronous shaft 631 rotates between the inner walls of the fixed shaft sleeve 64, and the convex ring 6312 also rotates between the inner walls of the fixed shaft sleeve 64.

[0066] The adjustment seat 65 is arranged in an "I"-shaped structure, and is arranged on the threaded portion 6311 and moves with it through thread transmission. A limiting plate 66 is connected to the middle side of the adjustment seat 65. One end of the limiting plate 66 is welded with a "T"-shaped piston shaft 661 between its inner wall. The piston shaft 661 passes through the fixing frame 2 61 and is in sliding contact with the inner wall, thereby cooperating with the thread transmission between the adjustment seat 65 and the threaded portion 6311.

[0067] An arc-shaped scale plate 642 is mounted on one end of the fixed sleeve 64 by screws, and an arc-shaped fixed arm 641 is mounted on two opposite positions on the fixed sleeve 64 by screws. The fixed arm 641 and the scale plate 642 are distributed in concentric circle trajectories. Two intersecting linkage frames 68 are rotatably provided at the other end of the fixed sleeve 64. The intersection of the two linkage frames 68 is rotatably connected to the outer surface of the fixed sleeve 64 by an axis. Two intersecting linkage handles 67 are rotatably provided at two opposite positions on one end of the adjustment seat 65 close to the fixed sleeve 64. The other ends of the two linkage handles 67 on the same side are connected to the end of the linkage frame 68 on that side by an axis, and an indicator mark 681 is mounted on the other end of the linkage frame 68 by screws. A notch is provided on the indicator mark 681, and the scale plate 642 passes through the notches of the indicator marks 681 on both sides and slides in contact with them.

[0068] It should be further explained that, as the bottom cover 52 moves downward, the material gradually falls onto the conveyor belt 12, and in this process, the connecting shaft 531 makes a vertical linear motion upward, thereby driving the lifting member 62 to move upward and adjust synchronously. As the lifting member 62 moves upward, the adjusting gear 63 drives the synchronous shaft 631 to rotate. Under the action of the threaded portion 6311 and the piston shaft 661, the adjusting seat 65 moves and adjusts along the threaded portion 6311 toward one side of the fixed sleeve 64, thereby driving the synchronous movement of the linkage handle 2 67, so that the angle between the linkage handles 2 67 on both sides increases. Similarly, in the linkage When the movable handle 67 is moved and adjusted, the linkage frame 68 connected to it is also synchronously driven to adjust together, so that the indicator marks 681 on the linkage handles 67 on both sides tend to move away from each other, that is, the angle range between the two indicator marks 681 becomes larger, and the angle between the two indicator marks 681 indirectly reflects the degree of dryness of the material; if the material is dried to the standard, the angle between the two indicator marks 681 is constant at this time, because the adjustment of the indicator mark 681 at this time is caused by the drive of the motor 2 551, and the drive angle of the motor 2 551 is always 15 degrees.

[0069] Working principle:

[0070] The material is placed in the storage barrel 44, and the storage barrel 44 is moved back and forth to drop onto the conveyor belt of the dryer 2. After being dried in the dryer 2, the dried material falls from the other end of the conveyor belt and falls into the collection box 51. As the material continues to fall into the collection box 51, the gravity on the bottom cover 52 continues to increase.

[0071] When the material is not completely dried, the weight of the material at this time must be greater than the total weight of the material in the completely dried state, so that the bottom cover 52 automatically moves downward to open, and the material falls onto the conveyor belt 12 and is transported forward. In this case, the slide 2 53 is driven upward by the bottom cover 52, and the slide 2 53 is driven upward synchronously, so that the lifting member 62 connected to the slide 2 53 moves upward synchronously, and drives the rotation of the adjusting gear 63. As the adjusting gear 63 rotates, the synchronous shaft 631 rotates synchronously therewith, and the adjusting seat 65 moves along the threaded portion 6311 toward the side where the fixed shaft sleeve 64 is located under the action of the threaded transmission, thereby controlling the linkage handle 2 67 to open outward, and driving the linkage frame 68 to open synchronously, so that the indicator marks 681 on both sides slide and adjust along the surface of the dial 642, and the angle between the indicator marks 681 on both sides also increases accordingly. The size of the angle between the two indicator marks 681 reflects the drying performance of the dryer 2.

[0072] When the material is sufficiently dried, the bottom cover 52 cannot be opened automatically. At this time, the PLC controller starts the second motor 551, which controls the rotating arm 55 to rotate upward 15 degrees and then reset, so that the material falls onto the conveyor belt 12 and continues to be transported forward when the bottom cover 52 is opened.

[0073] As the bottom cover 52 is opened, after the material falls, the slide 2 53 is reset downward under the action of the adjustment spring, and drives the bottom cover 52 to reset to a horizontal state in contact with the bottom wall of the collection box 51 through the linkage handle 1 54.

[0074] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or interconnected connections; they can refer to direct connections, internal connectivity between two components, or an interaction between two components. A person of ordinary skill in the art will be able to understand the meaning of the above terms in this application based on the specific circumstances.

[0075] The above is a detailed introduction to a dryness detection device and a detection method for a belt dryer provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A dryness detection device for a belt dryer, characterized in that: include: A testing platform (1), wherein a dryer (2) is placed on the testing platform (1), a control terminal (11) with a PLC controller is installed on one side wall of the testing platform (1), and a conveyor belt (12) is also provided on the testing platform (1); A feeding mechanism (4), the feeding mechanism (4) is arranged on the inlet side of the dryer (2) and is used for periodic feeding of materials; A material collecting mechanism (5), the material collecting mechanism (5) comprising a collecting box (51) and a bottom cover (52), the collecting box (51) being installed between the inner walls of the detection platform (1) and located below the discharge position of the dryer (2), and the bottom cover (52) being rotatably arranged below the bottom wall of the collecting box (51) by means of a linkage handle (54); A detection mechanism (6), the detection mechanism (6) comprising a second fixing frame (61), an adjustment gear (63), an adjustment seat (65) and a swing arm assembly; The second fixing frame (61) is installed on the detection table (1). An "L"-shaped lifting member (62) is passed through the second fixing frame (61). One end of the lifting member (62) slides on the outer wall of the collection box (51) in the vertical direction. The adjusting gear (63) is arranged on one side of the lifting member (62) and meshes with the lifting member (62) for transmission. A synchronous shaft (631) is arranged in the middle of the adjusting gear (63). The synchronous shaft (631) is rotatably arranged on one side of the second fixing frame (61). The adjusting seat (65) is arranged along the synchronous shaft. The length direction of (631) is slidably adjusted under the action of the screw transmission. A fixed sleeve (64) is provided on the outside of one end of the synchronous shaft (631). A dial (642) is installed on one end of the fixed sleeve (64). The swing arm assembly is rotatably provided on the outside of the fixed sleeve (64), and one end of the swing arm assembly is connected to the adjustment seat (65). An indicator (681) is installed on the other end of the swing arm assembly. The indicator (681) moves and adjusts along the trajectory of the dial (642).

2. A dryness detection device for a belt dryer according to claim 1, characterized in that: Two limit blocking arms (3) are installed on the side walls of the inlet and outlet of the dryer (2); a vertical bar is provided on the limit blocking arm (3) located on the side of the inlet direction of the dryer (2); contact sensors (31) are embedded on the side walls opposite to the two vertical bars; the contact sensors (31) are connected to the PLC controller via electrical signals; a guide plate (32) is installed between the limit blocking arms (3) located on the side of the outlet direction of the dryer (2); the bottom end of the guide plate (32) is arranged facing the collection box (51).

3. A dryness detection device for a belt dryer according to claim 2, characterized in that: The feeding mechanism (4) comprises a fixing frame (41), a sliding seat (42), a guide plate (43) and a storage barrel (44); A fixing frame (41) is installed on the inspection table (1), and a fixing hole (411) is opened along the length direction of the fixing frame (41), a slide seat (42) slides between the inner walls of the fixing hole (411), and an inner shaft sleeve is provided in the middle of the slide seat (42), and a screw (413) is rotatably provided between the end walls of the fixing hole (411), one end of the screw (413) is connected to a motor (412), the motor (412) is installed on the fixing frame (41), and the screw (413) passes through the inner shaft sleeve and is threadedly matched with the inner shaft sleeve; A guide shaft (414) and a rotating shaft (431) are also provided between the side walls of the fixing frame (41). The rotating shaft (431) passes through the guide plate (43) and rotates and adjusts synchronously therewith. The guide plate (43) is fixed to the limiting arm (3) on one side by bolts. Both sides of the outer wall of the storage barrel (44) are provided with protrusions (442), and the protrusions (442) on the same side are arranged opposite to the contact sensor (31), and both sides of the bottom of the storage barrel (44) are provided with movable and adjustable baffles (441), and a discharge hole is opened on the bottom wall of the storage barrel (44) between the baffles (441) on both sides.

4. A dryness detection device for a belt dryer according to claim 3, characterized in that: The detection platform (1) is provided with a discharge trough (14) at the end portion near the outlet of the dryer (2), the conveyor belt (12) and the collection box (51) are both installed between the inner walls of the discharge trough (14), and the collection box (51) is located above the conveyor belt (12); Two slide seats (53) are provided on one side wall of the collecting box (51) so as to slide in the vertical direction. An adjusting spring is provided above the slide seat (53). Two shaft seats (521) are installed on the bottom cover (52). A linkage handle (54) is provided between the slide seat (53) and the shaft seat (521) on the same side. A connecting shaft (531) which always moves in the vertical direction is provided between the two slide seats (53). Two fixing grooves 2 (512) and one fixing groove 1 (511) are provided on one side wall of the collecting box (51), a vertically arranged fixing shaft (513) is installed in the fixing groove 2 (512), an adjusting spring is sleeved on the fixing shaft (513) and its top end is connected and fixed to the top wall of the fixing groove 2 (512), one end of the slide 2 (53) slides between the inner walls of the fixing groove 2 (512) and the fixing shaft (513) passes through the slide 2 (53) and is in sliding contact with it, and the bottom end of the adjusting spring is in contact with the top surface of the slide 2 (53); Two shaft seats 2 (514) and two shaft seats 3 (521) are also installed on the side wall of the collection box (51), and a rotating shaft 2 (561) is rotatably arranged between the shaft seats 2 (514) on both sides. A fixing sleeve (56) is installed on the bottom cover (52), and the rotating shaft 2 (561) passes through the fixing sleeve (56) and is connected to it as a whole. A linkage handle 1 (54) is provided between the shaft seat 3 (521) and the slide seat 2 (53) on the same side, and a connecting shaft (531) is also provided between the ends of the slide seat 2 (53) on both sides located outside the fixing groove 2 (512).

5. The dryness detection device for a belt dryer according to claim 4, characterized in that: The collecting mechanism (5) further comprises a rotating arm (55), end shafts (522) are mounted on both side walls of one end of the bottom cover (52), a second motor (551) is connected to one end of the rotating arm (55), the second motor (551) is mounted between the inner walls of the detection platform (1), and the other end of the rotating arm (55) is in a hook-shaped structure, and the rotating angle of the rotating arm (55) is 15 degrees; When the bottom cover (52) is in a horizontal state, the bottom cover (52) is in contact with the bottom wall of the collection box (51), and the end shaft (522) is exactly located in the hook groove of the rotating arm (55); When the material falling into the collecting box (51) after drying is not fully dried, the bottom cover (52) opens downward under the gravity of the material, and at this time, the second slide seat (53) moves upward along the second fixing groove (512) and applies a force to the adjustment spring; When the materials falling into the collecting box (51) after drying are fully dried, the bottom cover (52) is always kept in a horizontal position. At this time, the bottom cover (52) is opened by the rotating arm (55) to realize the falling of the materials.

6. The dryness detection device for a belt dryer according to claim 5, characterized in that: Two shaft seats (611) arranged opposite to each other are installed on one side wall of the second fixing frame (61), one end of the synchronization shaft (631) is rotatably arranged on one of the shaft seats (611), the other end of the synchronization shaft (631) passes through the other shaft seat (611) and is in rotational contact therewith, and a threaded portion (6311) is also provided on the synchronization shaft (631), the adjustment seat (65) is located on the threaded portion (6311), and a convex ring (6312) connected to the synchronization shaft (631) is also provided on the synchronization shaft (631), and one end of the synchronization shaft (631) and the convex ring (6312) are both rotatably arranged between the inner wall of the fixed sleeve (64); A limiting plate (66) connected to the regulating seat (65) is provided on one side thereof, and a piston shaft (661) fixed thereto is mounted on the other end of the limiting plate (66). The piston shaft (661) is arranged in a T-shaped structure, and the piston shaft (661) passes through the second fixing frame (61) and is in sliding contact with the inner wall.

7. The dryness detection device for a belt dryer according to claim 6, characterized in that: The swing arm assembly includes a linkage handle 2 (67) and a linkage frame (68). Two linkage handles 2 (67) intersecting coaxially are rotatably provided on both sides of the adjustment seat (65) by means of an axial connection. Two linkage frames (68) are provided and intersecting on both sides of the fixed shaft sleeve (64). The intersection position of the two fixed shaft sleeves (64) and the outer surface of the fixed shaft sleeve (64) are rotatably provided by an axial connection. The linkage handle 2 (67) on the same side and one end of the linkage frame (68) are also connected by an axial connection. The indicator mark (681) is installed on the other end of the linkage frame (68). A symmetrically arranged fixed arm (641) is installed on both sides of the fixed shaft sleeve (64), one end of the linkage frame (68) passes through the fixed arm (641) and is in sliding contact with it, a notch is provided on the indicator (681), and a scale plate (642) is provided between the notches on both sides, and the scale plate (642) and the fixed arm (641) are respectively distributed along two different tracks of concentric circles.

8. The detection method of the dryness detection device for a belt dryer according to claim 7, characterized in that: The following steps are involved: S1. First, the material is fed to the inlet of the dryer (2) through the feeding mechanism (4), causing the storage cylinder (44) to reciprocate once and then pause. The material enters the dryer (2) for drying and falls into the collection box (51) from the outlet. S2. Then, as the material continues to fall into the collecting box (51), the automatic opening and closing of the bottom cover (52) is controlled by the total weight of the dried material. When the material is not fully dried, the bottom cover (52) automatically opens. At this time, the lifting member (62) moves upward and controls the adjustment gear (63) to rotate, thereby causing the adjustment seat (65) to move in a straight line toward the side close to the fixed sleeve (64), thereby controlling the swing arm assembly to adjust the angle between the indicator marks (681) on both sides. When the material is fully dried, the bottom cover (52) is driven to open and close by the rotating arm (55); S3. Then, as the bottom cover (52) opens and closes, the material falls onto the conveyor belt (12) and continues to be transported forward. Under the action of the adjustment spring, the slide seat (53) moves downward and drives the bottom cover (52) to return to a horizontal state in contact with the bottom wall of the collection box (51) through the linkage handle (54).

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