An intelligent and fully automatic material moisture testing method

Abstract

An intelligent and fully automatic material moisture testing method adopts an intelligent and fully automatic material moisture determination system. The determination method is as follows: turn on the hot air blower, the motor drives the tray to rotate to the bottom of the feed port, and the material falls onto the tray from the feed port. When the weighing target tray rotates to the set time or number of turns, the motor stops, and the weighing target tray is located above the electronic scale. The lifting cylinder drives the lifting plate to move downward, and the tray falls on the supporting rod after contacting the supporting rod. The electronic scale obtains the weight data of the tray, and the cylinder rises. The tray is supported on the tray support structure again. The motor starts to drive the tray to continue rotating and drying. After rotating for a certain time or number of turns, the motor stops, and the target tray is located above the electronic scale again to obtain the second weight value. Compare whether the two weight values ​​are within the allowable range. If they are within the allowable range, the lifting cylinder rises and drives the turntable to rotate so that the tray is located at the bottom of the discard cylinder for discarding. The present invention can be realized fully automatically without human participation.

Description

Technical Field

[0001] The invention relates to a material moisture determination method, in particular to a full-automatic material moisture determination method, and belongs to the technical field of material detection equipment. Background Art

[0002] In the physical property detection of incoming coal (ore), moisture is a very important indicator. The moisture content of many materials needs to be mechanically measured in the original and process detection to determine whether the materials meet the entry standards. The traditional moisture content determination usually involves placing the materials on a tray, placing them in a drying furnace for a certain period of time, and measuring the weight change before and after to obtain the moisture value, or taking them out at intervals during the drying process to test their weight. When the weight change is within a certain range, the moisture content is considered to be basically zero, and the moisture information is obtained by calculating the weight change before and after placement. This method uses manual operation, and high-temperature operation is required when placing them in the drying furnace. Special tools are required, and the workload is large. The numerical results of the measurement are closely related to the sense of responsibility of the staff. In many scenarios, there is a possibility of cheating, and untrue data will affect the normal operation of the process and product quality. Therefore, developing an automated moisture determination system and method with low manual participation is an effective way to overcome the above problems. Summary of the invention

[0003] The purpose of the present invention is to overcome the above problems existing in the current material moisture determination and to provide an intelligent fully automatic material moisture determination method.

[0004] To achieve the purpose of the present invention, the following technical scheme is adopted: an intelligent fully automatic material moisture testing method, adopting an intelligent fully automatic material moisture determination system, the intelligent fully automatic material moisture determination system comprises a drying chamber, a hot air blower is installed in the drying chamber, an automatic material moisture determination device is also installed in the drying chamber, the automatic material moisture determination device comprises a turntable, the turntable is provided with a plurality of trays, each tray is supported on the turntable by a tray support structure, the tray support structure comprises at least three pillars of the same height fixedly connected to the turntable, the tray is freely placed on the upper ends of at least three pillars, a slot seat is fixedly connected to the turntable, the slot seat is provided with slots in the up and down directions, the slot seat deviates from the center position of the tray, the slot is a V-shaped slot with a larger upper part and a smaller lower part, a shaft is freely placed in the slot up and down, a bearing 1 is installed at both ends of the shaft, the inner ring of the bearing 1 is tightly matched with the shaft, two rotating arms are fixedly connected to the lower part of the tray, and bearing holes are provided on the two rotating arms. The outer rings of the two bearings are tightly fitted in the bearing holes; a driving device is connected to the turntable, the driving device includes a motor, the motor drives the main shaft, and the main shaft is fixedly connected to the center of the turntable; the main shaft is installed in the sleeve through the bearing, the inner ring of the bearing is tightly fitted with the main shaft, the outer ring of the bearing is tightly fitted with the sleeve, the motor is fixedly connected to the mounting plate, and the mounting plate is fixedly connected to the sleeve; the sleeve is fixedly connected to the lifting plate, the lifting plate is fixedly connected to the lifting cylinder, and the lifting cylinder is connected to the frame; an electronic scale is installed below the turntable, the electronic scale has at least three support rods that are not in the same straight line, the top of the support rod is located below the turntable, and when the cylinder is lowered, the top of the support rod exceeds the height of the tray; a feed port is arranged at the upper part of the drying chamber; a discard cylinder is installed on the upper wall of the drying chamber, the cylinder rod of the discard cylinder faces downward, and the cylinder rod is located at the upper part of the outer edge of the tray; the motor, cylinder and electronic scale are all connected to the controller; a spreading plate is fixedly arranged on the upper part of the tray; The measurement method is as follows: turn on the hot air blower, the motor drives each turntable to rotate to the bottom of the feed port, and the material falls from the feed port onto each tray. During the rotation of the turntable, the material on the tray is spread flat after passing through the spreading plate. When the weighing target tray rotates to the set time or number of circles, the motor stops. At this time, the weighing target tray is located above the electronic scale, and the lifting cylinder drives the lifting plate to move downward. During the movement, the tray moves downward synchronously, and falls on the supporting rod after contacting the supporting rod. At this time, the electronic scale obtains the weight data of the tray, the cylinder rises, and the tray is supported on the tray supporting structure. The motor starts to drive the tray to continue rotating and drying. After rotating for a certain time or number of circles, the motor stops and the target tray Place it above the electronic scale again and continue weighing according to the above steps to get the second weight value. Compare the two weight values ​​to see if they are within the allowable range. If they are within the allowable range, the lifting cylinder rises and drives the turntable to rotate so that the tray is located at the bottom of the discard cylinder. The discard cylinder presses down the edge of the tray. During the rotation of the tray along the axis, the rear part tilts and tilts, and the material slides into the discard hopper at the bottom. Since the slot seat deviates from the geometric center of the tray, the tray can be automatically reset under the action of gravity. When the tray after discarding the material moves to the tray reset cylinder, the cylinder rod extends to push the tray to the horizontal rotating drum. When the tray after discarding the material rotates under the feed port, it is re-fed to test the next sample.

[0005] Furthermore, a horizontal pallet reset cylinder is also installed on the drying chamber wall, and the bottom of the front end of the cylinder rod of the pallet reset cylinder is at the same horizontal height as the pallet. The pallet reset cylinder is behind the discard cylinder, and when the pallet rotates, it first reaches the discard cylinder position and then the pallet reset cylinder position.

[0006] Further: the motor drives the main shaft through gears.

[0007] Furthermore, a waste material collecting hopper is installed in the drying chamber at the lower part of the waste material cylinder.

[0008] The positive and beneficial technical effects of the present invention are: the present invention can realize fully automatic and unmanned operation from material sampling to test result output, has a high degree of automation, can process multiple samples at one time, effectively reduces the workload in material moisture detection, eliminates the possibility of cheating, and has a fast test speed, accuracy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a main schematic diagram of the intelligent full-automatic material moisture determination system used in the present invention.

[0010] Figure 2 It is a top view schematic diagram of the intelligent full-automatic material moisture determination system used in the present invention.

[0011] Figure 3 It is a partial front view schematic diagram of the intelligent full-automatic material moisture determination system used in the present invention. DETAILED DESCRIPTION

[0012] In order to more fully explain the implementation of the present invention, the implementation examples of the present invention are provided. These implementation examples are merely elaborations of the present invention and do not limit the scope of the present invention.

[0013] The present invention is further explained in detail in conjunction with the accompanying drawings, in which the marks are: 1: drying chamber; 2: hot air blower; 3: turntable; 4: tray; 5: pillar; 6: slot seat; 7: main shaft; 8: motor; 9: bushing; 10: bearing 2; 11: lifting plate; 12: lifting cylinder; 13: feed port; 14: discard cylinder; 15: tray reset cylinder; 16: spreading plate; 17: discard collection bucket; 18: electronic scale; 19: support rod; 20: shaft; 21: rotating arm; 22: bearing 1; 23: V-groove.

[0014] As shown in the accompanying drawings, the intelligent fully automatic material moisture determination system includes a drying chamber 1, a feed port 13 is arranged at the upper part of the drying chamber; a hot air blower 2 is installed in the drying chamber, and an automatic material moisture determination device is also installed in the drying chamber, the automatic material moisture determination device includes a turntable 3, the turntable is provided with a plurality of trays 4, each tray is supported on the turntable by a tray support structure, the turntable in the present application can be made into a hollow shape or a spoke shape according to needs, the tray support structure includes at least three pillars 5 at the same height fixedly connected to the turntable, the tray is freely placed on the upper end of at least three pillars, a slot seat 6 is fixedly connected to the turntable, the slot The seat deviates from the center position of the tray, and the groove seat is provided with grooves in the up and down directions. The groove is a V-shaped groove that is larger at the top and smaller at the bottom. 23 in the figure is a V-shaped groove, and a shaft 20 is freely placed in the groove up and down. Bearings 22 are installed at both ends of the shaft. The inner ring of the bearing is tightly fitted with the shaft. Two rotating arms 21 are fixedly connected to the lower part of the tray. There are bearing holes on the two rotating arms. The outer rings of the two bearings are tightly fitted in the bearing holes. The purpose of the bearing here is to realize the rotational connection of the lower part of the tray on the shaft. The bearing can be replaced by a structure that can realize rotational connection, such as a sleeve and a shaft hole.

[0015] A driving device is connected to the turntable, and the driving device includes a motor 8, which drives a main shaft 7. In this embodiment, the motor drives the main shaft through gears, and the main shaft is fixedly connected to the center of the turntable. In this application, the motor can be a servo motor, or a rotary encoder can be installed on the output of the motor. The motor is controlled by a control system to realize the identification of the position of each pallet.

[0016] The spindle 7 is installed in the sleeve 9 through the bearing 2 10, the inner ring of the bearing 2 is tightly matched with the spindle, the outer ring of the bearing 2 is tightly matched with the sleeve, the motor is fixedly connected to the mounting plate, and the mounting plate is fixedly connected to the sleeve 9; The shaft sleeve 9 is fixedly connected to the lifting plate 11, the lifting plate is fixedly connected to the lifting cylinder 12, and the lifting cylinder is connected to the frame; An electronic scale 18 is installed below the turntable. The electronic scale has at least three supporting rods 19 that are not in the same straight line. The top of the supporting rod is located below the turntable. When the cylinder is lowered, the top of the supporting rod exceeds the height of the tray. A discard cylinder 14 is installed on the upper wall of the drying chamber, with the cylinder rod of the discard cylinder facing downward and located on the upper outer edge of the tray; a discard collection bucket 17 is installed in the drying chamber below the discard cylinder, and the motor, cylinder and electronic scale are all connected to the controller.

[0017] A tray reset cylinder 15 is also installed on the drying chamber wall in the horizontal direction. The bottom of the front end of the cylinder rod of the tray reset cylinder is at the same level as the tray. The tray reset cylinder is behind the discard cylinder. When the tray rotates, it first reaches the discard cylinder position and then the tray reset cylinder position. A material spreading plate 16 is fixedly arranged on the upper part of the tray.

[0018] The working process of this test system is as follows: turn on the hot air blower, the motor drives each turntable to rotate to the bottom of the feed port, and the material falls from the feed port onto each tray. During the rotation of the turntable, the material on the tray is spread flat after passing through the spreading plate. Take the measurement of the material in a certain tray as an example: after rotating to the set time or number of turns, the motor stops. At this time, the weighing target tray is above the electronic scale, and the lifting cylinder drives the lifting plate to move downward. During the movement, the tray moves downward synchronously, and falls on the supporting rod after contacting the supporting rod. At this time, the electronic scale obtains the weight data of the tray, the cylinder rises, and the tray is supported on the tray supporting structure again. The motor starts to drive the tray to continue rotating and drying. After rotating for a certain time or number of turns, the motor stops, and the target tray is again above the electronic scale. Continue weighing according to the above steps to obtain The second weight value is compared to see if the two weight values ​​are within the allowable range (the allowable range means that when the difference between the current and the subsequent weights is less than a certain value, it is considered that drying has been completed). If it is within the allowable range, the lifting cylinder rises and drives the turntable to rotate so that the tray is located at the bottom of the discard cylinder. The discard cylinder presses down on the edge of the tray. During the rotation of the tray along the axis, the rear part tilts and tilts, and the material slides into the discard hopper at the bottom. Since the slot seat deviates from the geometric center of the tray, the tray can be automatically reset under the action of gravity. In order to prevent the tray from resetting to its original state, a tray reset cylinder is set. When the tray after discarding the material is transferred to the tray reset cylinder, the cylinder rod extends to push the tray to the horizontal rotating drum. When the tray after discarding the material is rotated to the bottom of the feed port, it is re-fed to test the next sample.

[0019] In the present application, each tray can be identified by numbering each tray and setting the initial position of the turntable.

[0020] After describing the implementation mode of the present invention in detail, people familiar with the technology can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention, and the present invention is not limited to the implementation mode of the examples given in the specification.

Claims

1. An intelligent fully automatic material moisture testing method, using an intelligent fully automatic material moisture determination system, the intelligent fully automatic material moisture determination system includes a drying chamber, characterized in that: A hot air blower is installed in the drying chamber, and an automatic material moisture measuring device is also installed in the drying chamber, the automatic material moisture measuring device comprises a turntable, the turntable is provided with a plurality of trays, each tray is supported on the turntable by a tray supporting structure, the tray supporting structure comprises at least three pillars of the same height fixedly connected to the turntable, the tray is freely placed on the upper ends of at least three pillars, a slot seat is fixedly connected to the turntable, the slot seat is provided with slots in the up and down directions, the slot seat deviates from the center position of the tray, the slot is a V-shaped groove which is larger at the top and smaller at the bottom, a shaft is freely placed in the slot up and down, bearings are installed at both ends of the shaft, the inner ring of the bearing is tightly fitted with the shaft, two rotating arms are fixedly connected to the lower part of the tray, bearing holes are provided on the two rotating arms, and the outer rings of the two bearings are tightly fitted and installed in the bearing holes; a driving device is connected to the turntable, the driving device The device includes a motor, which drives a main shaft, and the main shaft is fixedly connected to the center of the turntable; the main shaft is installed in the sleeve through bearing 2, the inner ring of bearing 2 is tightly matched with the main shaft, and the outer ring of bearing 2 is tightly matched with the sleeve, the motor is fixedly connected to the mounting plate, and the mounting plate is fixedly connected to the sleeve; the sleeve is fixedly connected to the lifting plate, the lifting plate is fixedly connected to the lifting cylinder, and the lifting cylinder is connected to the frame; an electronic scale is installed below the turntable, and the electronic scale has at least three support rods that are not in the same straight line, and the top of the support rod is located below the turntable. When the cylinder is lowered, the top of the support rod exceeds the height of the tray; a feed port is provided at the upper part of the drying chamber; a discard cylinder is installed on the upper wall of the drying chamber, and the cylinder rod of the discard cylinder faces downward and is located at the upper part of the outer edge of the tray; the motor, cylinder, and electronic scale are all connected to the controller; a material spreading plate is fixedly provided on the upper part of the tray; The measurement method is as follows: turn on the hot air blower, the motor drives each tray to rotate to the bottom of the feed port, the material falls from the feed port onto each tray, and during the rotation of the turntable, the material on the tray passes through the spreading plate and is spread flat. When the weighing target tray rotates to the set time or number of turns, the motor stops. At this time, the weighing target tray is located above the electronic scale, and the lifting cylinder drives the lifting plate to move downward. During the movement, the tray moves downward synchronously, and falls on the supporting rod after contacting the supporting rod. At this time, the electronic scale obtains the weight data of the tray, the cylinder rises, and the tray is supported on the tray supporting structure. The motor starts to drive the tray to continue rotating and drying. After rotating for a certain time or number of turns, the motor stops and the target tray Place it above the electronic scale again and continue weighing according to the above steps to get the second weight value. Compare the two weight values ​​to see if they are within the allowable range. If they are within the allowable range, the lifting cylinder rises and drives the turntable to rotate so that the tray is located at the bottom of the discard cylinder. The discard cylinder presses down the edge of the tray. During the rotation of the tray along the axis, the rear part tilts and tilts, and the material slides into the discard hopper at the bottom. Since the slot seat deviates from the geometric center of the tray, the tray can be automatically reset under the action of gravity. When the tray after discarding the material moves to the tray reset cylinder, the cylinder rod extends to push the tray to the horizontal rotating drum. When the tray after discarding the material rotates under the feed port, it is re-fed to test the next sample.

2. An intelligent fully automatic material moisture testing method according to claim 1, characterized in that: A pallet reset cylinder is also installed horizontally on the drying chamber wall. The bottom front end of the cylinder rod of the pallet reset cylinder is at the same level as the pallet. The pallet reset cylinder is behind the discard cylinder. When the pallet rotates, it first reaches the discard cylinder position and then the pallet reset cylinder position.

3. The intelligent fully automatic material moisture testing method according to claim 1 is characterized in that: The motor drives the spindle through gears.

4. The intelligent fully automatic material moisture testing method according to claim 1 is characterized in that: A waste material collecting hopper is installed in the drying chamber at the lower part of the waste material cylinder.

Images