An improved on-line sampling device for process equipment

Abstract

The utility model discloses an improved process processing equipment on -line sample taking and placing device, including with the control system that several on -line moisture meters are connected in the inside of processing equipment top, still include: follow -up system, follow -up system symmetry sets up on the sampling point box top of processing equipment, lifting system, lifting system is connected on each follow -up system respectively, rotation system, rotation system is connected on each lifting system respectively, take and place material system, take and place material system is connected on rotation system respectively, discharge system, discharge system is set up in corresponding follow -up system one end respectively. The utility model can be to process processing equipment main conveyer belt top on -line instrument vicinity prescribed range material fixed point, fixed depth, synchronization, follow -up sampling, and will sample take and place to process processing equipment outside's take and place material system.

Description

Technical Field

[0001] This utility model relates to an improved online sampling device for process equipment and its calibration method, belonging to the field of tobacco processing technology. Background Technology

[0002] In the processing of tobacco materials, processing equipment is required to control various physical properties of the materials (such as moisture content). To ensure that the material properties meet the requirements, processing parameters need to be adjusted based on factors such as the environment and the physical properties of different batches of materials. This process often requires referencing the test data of various physical properties of the materials from online instruments (such as moisture meters). Therefore, it is necessary to use laboratory testing methods and standard verification methods to regularly verify and correct the accuracy of online instruments.

[0003] Taking a tobacco sheet re-drying machine as an example, existing technology, to ensure the material's moisture content meets standards, includes online moisture meters and manual sampling windows on both sides of the middle of the equipment. Several sampling personnel periodically and simultaneously take quantitative vertical samples from above the main conveyor belt on both sides of the equipment within a specified time. After obtaining the samples, they are quickly placed in sample containers, sealed, labeled, and sent for testing. The moisture content of the samples is measured using the oven drying method, and the moisture meter readings are recorded several times and averaged. Finally, the moisture meter is calibrated and corrected using two sets of data according to prescribed methods.

[0004] In the specific manual sampling process, several sampling personnel need to climb ladders from both sides of the equipment, reach their hands into the equipment through the sampling window, grab materials from both sides of the running conveyor belt, and then remove the materials from the window and place them in a container for testing. This process carries a high risk to production safety, requiring careful operation to avoid touching the running tobacco re-drying machine conveyor belt and guard plates to prevent scratches. Furthermore, due to objective differences in the height, arm span, and reaction time of the sampling personnel, manual sampling involves random errors in point location, depth, and synchronization, leading to doubts about the accuracy and validity of the sample moisture content.

[0005] A search revealed a patent application, CN110285996A, entitled "Cold Chamber Tobacco Leaf Sampling Device," which discloses at least one sampler located above the conveyor belt of a leaf re-drying machine and at the top of the cooling zone. The sampler comprises a frame, a translation actuator, a gripping cylinder, and a gripper. The frame is fixed to the top of the cooling zone. The gripping cylinder is vertically fixed to the slide of the translation actuator via a cylinder bracket. The translation actuator is connected and fixed to the frame via an actuator bracket. The gripper is fixed to the end of the gripping cylinder piston rod via a connecting block. Each of the gripper's two fingers has a gold finger attached. The gripper, gripping cylinder, and translation actuator are each controlled by a control system. This cold chamber tobacco leaf sampling device also has the following technical defects:

[0006] On the one hand, the arrangement of the sampling device significantly encroaches on the internal space of the sampling point enclosure, clearly leaving no space for the installation of an infrared online moisture analyzer. The distance between the moisture analyzer and the sampling point exceeds the aforementioned specified range, affecting sample detection.

[0007] The difficulty of collecting samples by sampling personnel is not in line with human-machine efficiency. In addition, the sampling personnel have to wait for the sampling container to rise and then directly put the sealing bag on the outside of the container before opening the container. This operation is obviously not feasible. Even if the material is exposed to the outside of the processing equipment for too long, affecting its moisture content, the sealing bag is more likely to be damaged or fall off when the sampling container is opened. Furthermore, the arrangement of the sampling device requires an open sampling hole on the top of the process equipment, which affects the airtightness of the processing equipment.

[0008] A search revealed another patent, CN220230984U, entitled "Automatic Sampling Device for Online Infrared Moisture Analyzer Calibration in Cigarette Production Process," which discloses an automatic sampling device for tobacco materials passing through the probe of an online infrared moisture analyzer. Driven by the online infrared moisture analyzer, the device is characterized by comprising: a material-gas conveying pipe (6), one end of which is provided with a material suction port (5) to absorb tobacco material samples; and a blower (9) connected to the other end of the material-gas conveying pipe (6). The output end of (9) is connected to the input end of the gas-material separator (7); a sample collection box (8) is provided at the output end of the gas-material separator (7), and the sample collection box (8) is sealed to the gas-material separator (7). The tobacco material sample falls into the sample collection box (8) after being separated by the gas-material separator (7); the control system is linked with the online infrared moisture meter, and the automatic sampling device is driven by the online infrared moisture meter through the control system to control the automatic sampling device to start or stop sampling. This patent also has the following technical problems:

[0009] On the one hand, the sample collection method of this technical solution is negative pressure suction. This method cannot solve the problem of collecting materials at a constant depth and quantity as required by this patent; negative pressure suction cannot collect materials at the same depth in each cross-section. For example, in the same cross-section of a process processing equipment, the materials have upper, middle and lower layers in the depth direction, and the moisture content is not the same. On the other hand, the above-mentioned device cannot ensure that the proportion of upper, middle and lower layers of materials is the same each time it is sampled. Negative pressure suction requires a large amount of airflow to transport the materials. This process changes the moisture content of the materials significantly, which reduces the accuracy and representativeness of the sample materials. Utility Model Content

[0010] In view of the many defects and deficiencies in the above-mentioned background technology, this utility model has made improvements and innovations, with the aim of providing a sampling device for process processing equipment, which can sample materials at fixed points, at fixed depths, synchronously and dynamically within a specified range near the online instrument above the main conveyor belt of the process processing equipment, and place the samples into the material handling system outside the process processing equipment.

[0011] To solve the above problems and achieve the above-mentioned utility model objectives, this utility model provides an improved online sampling device for process equipment, which is achieved by adopting the following design structure and the following technical solution:

[0012] An improved online sampling device for process equipment includes a control system connected to several online moisture meters inside the processing equipment, and further includes:

[0013] The follow-up system is symmetrically arranged on the sampling point box above the processing equipment, and is used to drive the lifting system connected to it to reciprocate along the conveying surface of the main conveyor belt.

[0014] The lifting system is connected to each follower system and is used to drive the rotating system connected to it to move up and down.

[0015] The rotating system is connected to each lifting system and is used to drive the material handling system connected to it to rotate.

[0016] The material handling system is connected to the rotating system and is used to grab materials and put them into the corresponding discharge system.

[0017] The discharge system is located at one end of the corresponding follow-up system and is used to collect materials.

[0018] Preferably, the sampling point housing has through-holes at both ends of its upper part; the follow-up system includes:

[0019] Linear module, the linear module is connected to the sampling point box at the installation port;

[0020] The drive unit is connected to one side of the linear module and provides power to the linear module.

[0021] The slider is slidably connected to the linear module.

[0022] The slider can move synchronously with the main conveyor belt; the drive motor is connected to the control system.

[0023] Preferably, the lifting system includes:

[0024] The lifting module is connected to the slider at its upper end.

[0025] The lifting drive motor is connected to the top of the lifting module and provides power to the lifting module.

[0026] The lifting slider is slidably connected to the lifting module.

[0027] The lifting slider reciprocates along a straight line perpendicular to the conveying surface of the main conveyor belt. The lifting drive is controlled by the control system, which enables the lifting slider to precisely control its relative distance to the main conveyor belt.

[0028] In this invention, the linear module and the lifting module can be linear modules, Cartesian coordinate robots, linear slides, and the transmission method can be synchronous belts, lead screws, chains, gear racks or cylinder pistons; the drive motor and the lifting drive motor can be servo motors, stepper motors, ordinary motors, or compressed air.

[0029] Preferably, the rotating system includes:

[0030] A swing actuator, one side of which is connected to a lifting slider;

[0031] A swing arm, one end of which is connected to the drive shaft of a swing driver;

[0032] The swing arm is driven by a swing driver and can rotate around an axis perpendicular to the conveying surface of the main conveyor belt at several angles.

[0033] Preferably, the material handling system includes:

[0034] The gripper, the upper end of which is connected to the other end of the swing arm;

[0035] The gripper is symmetrically connected to both ends of the gripper. The gripper is connected to the corresponding fingers on the gripper ends, and the number of grippers is the same as the number of gripper fingers. Driven by the gripper fingers, it can close or open at several angles.

[0036] Among them, the grab bucket can grab materials above the main conveyor belt at a fixed point and depth.

[0037] In this invention, the swing driver can be a swing cylinder, which can be driven by compressed air, a servo motor, a stepper motor, or a regular motor.

[0038] Preferably, the discharge system includes:

[0039] The inclined chute has one end that passes through the wall panel of the sampling point box and is fixed to the wall panel, and this end is located inside the sampling point box.

[0040] The upper end of the collection bin is connected to the other end of the collection bin;

[0041] The material collection platform is installed at the lower outlet of the material collection silo via a connecting frame.

[0042] In this invention, the inclined chute has an inclined surface at a certain angle relative to the horizontal plane. The angle of the inclined surface helps the material overcome its own friction and slide along the inclined surface into the collection bin under the action of gravity, preventing material accumulation and sticking. The collection bin and the collection platform are located on the outside of the sampling point box wall of the process processing equipment, which makes it convenient for sampling personnel to place the sampling container and prevent sample spillage and leakage.

[0043] Preferably, a protective cover is also provided above the sampling point box on the outside of each follow-up system.

[0044] In this invention, the control system is located near the sampling point housing of the processing equipment and consists of a programmable controller, memory, driver, display, and user interface, among other control and communication devices. The control system can receive feedback signals from the sensing device and the online moisture meter, and store and display the online moisture meter's detection data based on these feedback signals, sampling personnel control signals, and preset program switches, thereby controlling the operation of the aforementioned systems.

[0045] In this invention, the control system is equipped with an integrated label printer. After sampling, the system automatically prints information such as material details, sampling location, sampling time, and average moisture content measured by the moisture meter onto self-adhesive stickers. These stickers are then affixed by the sampler to the corresponding sealed box / bag to prevent sample confusion during subsequent oven-drying testing. This facilitates sampler labeling and reduces workload.

[0046] This invention also includes sensing devices, which are respectively installed on the detection follow-up system, lifting system, rotation system, and material handling system, for detecting whether the moving parts of each system are in place during operation.

[0047] The sensing device includes multiple sub-sensing devices, which are located at the designed positions of each system. Each sub-sensing device consists of several proximity switches, limit switches, photoelectric switches, and encoders. It is used to detect whether the moving parts in each system are in place, the real-time conveying speed of each drive motor and the main conveyor belt of the processing equipment, and to feed the detection signals back to the control system. The control system is located below one side of the processing equipment.

[0048] When using:

[0049] Step 1, Sampling begins: The sampling personnel place the sampling container below the discharge system and the operation control system sends a start signal;

[0050] Step 2, System self-check: The system uses sensors to detect whether the moving parts in each system are within the allowable range, and also detects the belt speed of the main conveyor belt to determine whether it is within the allowable range; if there is an abnormality, the sampling personnel are prompted to stop sampling and make corrections.

[0051] Step 3, Data recording begins: The follow-up system, lifting system and rotating system operate. After the material handling system reaches the sampling start position, the control system detects the corresponding signal from the sensing device and begins to read and store the online moisture meter detection data and the time displayed by the control system's built-in clock at set time intervals.

[0052] Step 4, Sample Grabbing: Simultaneously with the start of data recording, the follow-up system, lifting system, and rotating system operate according to the speed and direction signals output by the control system, ensuring that the material handling system moves at the same speed and in the same direction as the main conveyor belt. At the same time, the grippers of the material handling system drive the grab bucket to close, completing the sample grabbing action. The control system outputs signals according to the intervals set in the program, controlling the operation of the follow-up system, lifting system, and rotating system, so that the material handling system reaches the sampling completion position.

[0053] Step 5, Data recording ends: The material handling system reaches the sampling completion position, the control system detects the corresponding signal of the sensing device, and ends the reading and storage of online moisture meter detection data at the set time interval. The system calculates and displays the average value of online moisture meter detection data, sampling time, batch of processed material, and other information during this sampling process according to the set program.

[0054] Step 6, Sampling End: In parallel with the step of the control system displaying the online moisture meter detection data, the follow-up system, lifting system and rotation system operate according to the speed and direction signals output by the control system, so that the material handling system moves to the top of the chute of the discharge system. After the control system detects the corresponding signal from the sensing device, it controls the grab bucket of the material handling system to open. The sample enters the chute under the action of gravity and then falls into the sampling container at the collection bin of the discharge system. After the control system detects the corresponding signal from the sensing device, it displays the sampling end information.

[0055] Step 7, Sample testing steps: The sampling personnel, according to the information displayed by the control system, seal the sampling container and mark and record the average value of the online moisture meter test data, sampling time, batch of processed materials, and other information before sending it for testing. The moisture content standard value of the sample is measured by the oven drying method.

[0056] Step 8, Instrument Verification Steps: Relevant personnel determine the detection accuracy of the online moisture meter according to the average value of the online moisture meter's detection data and the standard value of the sample moisture content using the prescribed methods. Then, they determine whether the online moisture meter needs to be calibrated and the value of the calibration coefficient according to industry standards.

[0057] In this invention, the sampling container is placed on the collection platform during use.

[0058] During operation, in step S2, when detecting belt speed, the control system reads the belt speed detection signal of the main conveyor belt from the sensing device to determine whether the belt speed of the main conveyor belt is within the allowable range. If the belt speed exceeds the set range, a warning message is issued, prompting the sampling personnel to pause sampling and correct the belt speed; if the belt speed meets the set range, the current running speed data of the main conveyor belt is read and stored, and the process proceeds to the next step.

[0059] During the status detection and correction of each system, the control system reads the position signals of each sub-sensing device corresponding to each system. If the requirements are met, a start signal is output to proceed to the next step; otherwise, a position correction command is issued to control the drive motor of each system to start in the programmed direction and run until the position signal of each subsystem is correct.

[0060] The beneficial effects of this utility model compared with the prior art are:

[0061] 1. This utility model can sample materials at a fixed point, depth, synchronously and dynamically within a specified range near online instruments, and place the samples into the material handling system outside the process equipment; it avoids objective differences such as the height, arm span and reaction time of the sampling personnel. Manual sampling has random errors in fixed point, depth and synchronization, which leads to doubts about the accuracy and effectiveness of the sample moisture content.

[0062] 2. This utility model can compare online instrument test data with sample standard data, verify and correct the accuracy of online instruments, promptly detect and eliminate online instrument faults and defects, and ensure that online instruments are in good operating condition;

[0063] 3. This utility model is ingeniously designed, simple to operate, and highly safe, greatly avoiding contact with the conveyor belt and guard plate of the tobacco re-drying machine during operation, and preventing scratches.

[0064] 4. This utility model can replace manual sampling with a sampling device within a specified range near the online instrument for synchronous sampling. At the same time as sampling, the measured values ​​of the online instrument are recorded and stored. After obtaining the standard values ​​of the above samples, the two sets of data are compared to verify and correct the online instrument. Attached Figure Description

[0065] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0066] Figure 1 This is one of the installation and usage state diagrams of this utility model;

[0067] Figure 2 This is one of the schematic diagrams illustrating the working principle of this utility model;

[0068] Figure 3 This is the second schematic diagram illustrating the working principle of this utility model;

[0069] Figure 4 This is the third schematic diagram illustrating the working principle of this utility model;

[0070] Figure 5 This is the fourth schematic diagram illustrating the working principle of this utility model;

[0071] Figure 6 This is the second installation and usage diagram of this utility model;

[0072] Figure 7 This is the third diagram showing the installation and use status of this utility model;

[0073] Figure 8 This is the fourth diagram showing the installation and use status of this utility model;

[0074] Figure 9 This is the fifth diagram showing the installation and use status of this utility model;

[0075] Figure 10 This is a schematic diagram of the overall structure of this utility model;

[0076] Figure 11 This is one of the partial structural schematic diagrams of this utility model;

[0077] Figure 12 This is the second partial structural schematic diagram of this utility model;

[0078] Figure 13 This is the third partial structural schematic diagram of this utility model;

[0079] Figure 14 This is a partial exploded view of the structure of this utility model;

[0080] Figure 15 This is a schematic diagram of the online instrument calibration method of this utility model;

[0081] In the figure, the numbers are: 1—follow-up system, 11—linear module, 12—drive motor, 13—slider, 14—mounting bracket;

[0082] 2—Lifting system, 21—Lifting module, 22—Lifting drive motor, 23—Lifting slider;

[0083] 3—Rotation system; 31—Oscillating drive; 32—Swing arm;

[0084] 4—Material handling system; 41—Gripper; 42—Grab bucket;

[0085] 5—Discharge system, 51—Inclined chute, 52—Collection bin, 53—Collection platform;

[0086] 6—Sensing devices;

[0087] 7—Control system;

[0088] 8—Moisture meter;

[0089] 9—Processing equipment, 91—Sampling point box, 92—Main conveyor belt. Detailed Implementation

[0090] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0091] In summary, a more specific embodiment of this utility model is as follows:

[0092] Example 1

[0093] As per the instruction manual Figures 1-13 As shown, an improved online sampling device for process equipment includes a control system 7 connected to several online moisture meters 8 inside the processing equipment 9, and further includes:

[0094] Follow-up system 1 is symmetrically arranged on the sampling point box 91 above the processing equipment 9, and is used to drive the lifting system 2 connected to it to reciprocate along the conveying surface of the main conveyor belt 92.

[0095] Lifting system 2 is connected to each follower system 1 and is used to drive the rotating system 3 connected to it to move up and down.

[0096] Rotating system 3 is connected to each lifting system 2 and is used to drive the material handling system 4 connected to it to rotate.

[0097] The material handling system 4 is connected to the rotating system 3 and is used to grab materials and put them into the corresponding discharge system 5.

[0098] The discharge system 5 is set at one end of the corresponding follow-up system 1 and is used to collect materials.

[0099] Furthermore, the sampling point housing 91 has through-holes at both ends of its upper part; the follow-up system 1 includes:

[0100] Linear module 11 is connected to the sampling point housing 91 at the mounting port;

[0101] A drive motor 12 is connected above one side of the linear module 11 and provides power to the linear module 11.

[0102] Slider 13 is slidably connected to linear module 11;

[0103] The slider 13 can move synchronously with the main conveyor belt 92; the drive motor 12 is connected to the control system 7.

[0104] In this invention, one side of the linear module 11 is connected to the sampling point box 91 via a mounting bracket 14.

[0105] Furthermore, the lifting system 2 includes:

[0106] Lifting module 21, the upper end of which is connected to slider 13;

[0107] The lifting drive motor 22 is connected to the top of the lifting module 21 and provides power to the lifting module 21.

[0108] The lifting slider 23 is slidably connected to the lifting module 21.

[0109] The lifting slider 23 reciprocates along a straight line perpendicular to the conveying surface of the main conveyor belt 92. The lifting drive motor 22 is controlled by the control system 7, which enables the lifting slider 23 to precisely control its relative distance to the main conveyor belt 92.

[0110] In this utility model, the linear module 11 and the lifting module 21 can be linear modules, Cartesian coordinate robots, linear slides, and the transmission method can be synchronous belt, lead screw, chain, gear rack or cylinder piston; the drive motor 12 and the lifting drive motor 22 can be servo motors, stepper motors, ordinary motors or compressed air.

[0111] Furthermore, the rotating system 3 includes:

[0112] A swing driver 31 is connected to a lifting slider 23 on one side.

[0113] The swing arm 32 has one end connected to the drive shaft of the swing driver 31;

[0114] The swing arm 32 is driven by the swing driver 31 and can rotate around an axis perpendicular to the conveying surface of the main conveyor belt 92 by a certain angle.

[0115] Furthermore, the material handling system 4 includes:

[0116] The upper end of the gripper 41 is connected to the other end of the swing arm 32;

[0117] The gripper 42 is symmetrically connected to both ends of the gripper 41. The gripper 42 is connected to the corresponding fingers of the gripper 41, and the number of grippers 42 is the same as the number of fingers of the gripper 41. Driven by the fingers of the gripper 41, it can close or open at a certain angle.

[0118] Among them, the grab bucket 42 can grab the material above the main conveyor belt 92 at a fixed point and depth.

[0119] In this invention, the swing driver 31 can be a swing cylinder, which can be driven by compressed air, a servo motor, a stepper motor or a regular motor.

[0120] Furthermore, the discharge system 5 includes:

[0121] Inclined groove 51, one end of which passes through the wall panel of sampling point box 91 and is fixed to the wall panel of the box, and the end is located inside the sampling point box 91;

[0122] The upper end of the collection bin 52 is connected to the other end of the collection bin 52;

[0123] The material collection platform 53 is installed at the lower outlet of the material collection bin 52 via a connecting frame.

[0124] In this utility model, the inclined chute 51 has an inclined surface at a certain angle relative to the horizontal plane. The angle of the inclined surface is conducive to the material overcoming its own friction and sliding along the inclined surface into the collection bin under the action of gravity, preventing material accumulation and sticking. The collection bin 52 and the collection platform 53 are located on the outside of the wall panel of the sampling point box 9 of the process processing equipment, which makes it convenient for the sampling personnel to place the sampling container and prevent the sample from spilling or leaking.

[0125] Furthermore, a protective cover is provided above the sampling point box 91 on the outside of each follow-up system 1.

[0126] In this invention, the control system 7 is located near the sampling point housing 9 of the processing equipment and consists of a programmable controller, a memory, a driver, a display, and an operating interface, among other control and communication devices. The control system 7 can receive feedback signals from the sensing device 6 and the online moisture meter 8, and store and display the detection data of the online moisture meter 8 based on the feedback signals, the sampling personnel's control signals, and preset program switches, thereby controlling the operation of the aforementioned systems.

[0127] In this invention, the control system is equipped with an integrated label printer. After sampling, the system automatically prints information such as material details, sampling location, sampling time, and average moisture content measured by the moisture meter onto self-adhesive stickers. These stickers are then affixed by the sampler to the corresponding sealed box / bag to prevent sample confusion during subsequent oven-drying testing. This facilitates sampler labeling and reduces workload.

[0128] When using:

[0129] Step 1, Sampling begins: The sampling personnel place the sampling container below the discharge system 5 and the operation control system 7 sends a start signal;

[0130] Step 2, data recording begins: The follow-up system 1, lifting system 2 and rotating system 3 operate. After the material handling system 4 reaches the sampling start position, the control system 7 begins to read and store the detection data of the online moisture meter 8 and the time displayed by the built-in clock of the control system 7 at set time intervals.

[0131] Step 3, Sample Grabbing: Simultaneously with the start of data recording, the follow-up system 1, lifting system 2, and rotating system 3 operate according to the speed and direction signals output by the control system 7, ensuring that the material handling system 4 moves at the same speed and in the same direction as the main conveyor belt 92. At the same time, the gripper 41 of the material handling system 4 drives the grab bucket 42 to close, completing the sample grabbing action. The control system 7 outputs signals according to the interval time set in the program, controlling the operation of the follow-up system 1, lifting system 2, and rotating system 3, so that the material handling system 4 reaches the sampling completion position.

[0132] Step 4, data recording ends: The material handling system 4 reaches the sampling completion position, the control system 7 finishes inspection, reads and stores the detection data of the online moisture meter 8 at the set time interval, calculates and displays the average value of the detection data of the online moisture meter 8 during this sampling process, the sampling time, the batch of the processed material, and other information according to the set program;

[0133] Step 5, Sampling ends: In parallel with the step of the control system 7 displaying the detection data of the online moisture meter 8, the follow-up system 1, the lifting system 2 and the rotating system 3 operate according to the speed and direction signals output by the control system 7, so that the material handling system 4 moves to the top of the inclined chute 51 of the discharge system 5. The control system 7 controls the grab bucket 42 of the material handling system 4 to open, and the sample enters the inclined chute 51 under the action of gravity and then falls into the sampling container at the collection bin 52 of the discharge system 5.

[0134] Step 6, Sample testing steps: The sampling personnel, according to the information displayed by the control system 7, seal the sampling container and mark and record the average value of the data detected by the online moisture meter 8, the sampling time, the batch of the processed material, and other information before sending it for testing. The moisture content standard value of the sample is measured by the oven drying method.

[0135] Step 7, Instrument Verification Steps: Relevant personnel determine the detection accuracy of the online moisture meter according to the average value of the detection data of the online moisture meter and the standard value of sample moisture content using the prescribed method. Then, they determine whether the online moisture meter needs to be calibrated and the value of the calibration coefficient according to industry standards.

[0136] In this invention, when in use, the sampling container is placed on the collection platform 53.

[0137] Example 2

[0138] As attached Figure 14 and Figure 15 As shown, this embodiment is basically the same as embodiment 1, except that it also includes a sensing device 6. The sensing device 6 is respectively installed on the detection follow-up system 1, the lifting system 2, the rotating system 3, and the material picking and placing system 4, and is used to detect whether the moving parts of each system are in place during operation.

[0139] The sensing device 6 includes multiple sub-sensing devices, which are located at the designed positions of each system. Each sub-sensing device consists of several proximity switches, limit switches, photoelectric switches and encoders. It is used to detect whether the moving parts in each system are in place, the real-time conveying speed of each drive and the main conveyor belt 92 of the processing equipment, and to feed the detection signals back to the control system 7. The control system 7 is located below one side of the processing equipment 9.

[0140] When using:

[0141] Step 1, Sampling begins: The sampling personnel place the sampling container below the discharge system 5 and the operation control system 7 sends a start signal;

[0142] Step 2, System self-check: The sensing device 6 detects whether the moving parts in each system are within the allowable range, and detects the belt speed of the main conveyor belt 92 to determine whether it is within the allowable range; if there is an abnormality, the sampling personnel are prompted to suspend sampling and make corrections.

[0143] Step 3, data recording begins: The follow-up system 1, lifting system 2 and rotating system 3 operate. After the material handling system 4 reaches the sampling start position, the control system 7 detects the corresponding signal of the sensing device 6 and begins to read and store the detection data of the online moisture meter 8 and the time displayed by the built-in clock of the control system 7 at set time intervals.

[0144] Step 4, Sample Grabbing: Simultaneously with the start of data recording, the follow-up system 1, lifting system 2, and rotating system 3 operate according to the speed and direction signals output by the control system 7, ensuring that the material handling system 4 moves at the same speed and in the same direction as the main conveyor belt 92. At the same time, the gripper 41 of the material handling system 4 drives the grab bucket 42 to close, completing the sample grabbing action. The control system 7 outputs signals according to the interval time set in the program, controlling the operation of the follow-up system 1, lifting system 2, and rotating system 3, so that the material handling system 4 reaches the sampling completion position.

[0145] Step 5, data recording ends: The material handling system 4 reaches the sampling completion position, the control system 7 detects the corresponding signal of the sensing device 6, ends the reading and storage of the detection data of the online moisture meter 8 at the set time interval, and calculates and displays the average value of the detection data of the online moisture meter 8 during this sampling process, the sampling time, the batch of the processed material, and other information according to the set program.

[0146] Step 6, Sampling End: In parallel with the step of the control system 7 displaying the detection data of the online moisture meter 8, the follow-up system 1, lifting system 2 and rotating system 3 operate according to the speed and direction signals output by the control system 7, so that the material handling system 4 moves to the top of the inclined chute 51 of the discharge system 5. After the control system 7 detects the corresponding signal of the sensing device 6, it controls the grab bucket 42 of the material handling system 4 to open. The sample enters the inclined chute 51 under the action of gravity and then falls into the sampling container at the collection bin 52 of the discharge system 5. After the control system 7 detects the corresponding signal of the sensing device 6, it displays the sampling end information.

[0147] Step 7, Sample testing steps: The sampling personnel, according to the information displayed by the control system 7, seal the sampling container and mark and record the average value of the data detected by the online moisture meter 8, the sampling time, the batch of the processed material, and other information before sending it for testing. The moisture content standard value of the sample is measured by the oven drying method.

[0148] Step 8, Instrument Verification Steps: Relevant personnel determine the detection accuracy of the online moisture meter according to the average value of the detection data of the online moisture meter and the standard value of sample moisture content using the prescribed method. Then, they determine whether the online moisture meter needs to be calibrated and the value of the calibration coefficient according to industry standards.

[0149] In this invention, when in use, the sampling container is placed on the collection platform 53.

[0150] During operation, in step S2, when detecting belt speed, the control system 7 reads the belt speed detection signal of the main conveyor belt 92 from the sensing device 6 to determine whether the belt speed of the main conveyor belt 92 is within the allowable range. If the belt speed exceeds the set range, a warning message is issued to prompt the sampling personnel to suspend sampling and correct the belt speed; if the belt speed meets the set range, the current running speed data of the main conveyor belt 92 is read and stored, and the process proceeds to the next step.

[0151] During the status detection and correction of each system, the control system 7 reads the position signals of each sub-sensing device corresponding to each system. If the requirements are met, a start signal is output to proceed to the next step; otherwise, a position correction command is issued to control the drive motor of each system to start in the programmed direction and run until the position signal of each subsystem is correct.

[0152] In the above embodiments, the acquisition of sample moisture data involved in this utility model is carried out in accordance with the methods specified in relevant industry regulations. For example, the "Cigarette Process Specification," section 13.2.4.2, stipulates:

[0153] While the material is passing through normally, take samples and measure their moisture content using the oven drying method, recording the moisture meter readings at least five times during sampling. The calculation formula is as follows:

[0154]

[0155] In the formula:

[0156] —Detection accuracy %;

[0157] —Measured moisture content of material in the i-th time, %, where i is a natural number from 1 to n;

[0158] —Displays the moisture content % of the material in the i-th iteration, where i is a natural number from 1 to n.

[0159] —Number of tests.

[0160] The above-mentioned oven drying method 13.1.4.1.2 stipulates:

[0161] a sampling method

[0162] Sampling should be done during the stable production phase, taking approximately 50-100g of samples randomly within 3.0m of the inlet or outlet of each process equipment or within 20cm of the moisture meter detection point, and placing them in a sealed sample box or bag.

[0163] b Sample preparation

[0164] After the samples are mixed thoroughly, take a certain amount of sample and place it in a sample box of known weight. Immediately close the box and weigh it to an accuracy of 0.001g. Each sample should be measured at least twice in parallel.

[0165] c Sample Detection

[0166] When the oven temperature stabilizes at 100±1℃, open the lid of the sample box and place it at the bottom of the box in the middle rack of the oven. The sample boxes should be placed at a density of no less than 1 box per 120cm². 2 Close the oven door and start timing. After 2 hours, open the oven door, cover each sample box, remove them, and place them in a desiccator. After cooling to room temperature, weigh each sample to an accuracy of 0.001g and calculate the sample moisture content using the following formula:

[0167]

[0168] In the formula:

[0169] W — Sample moisture content;

[0170] m1 — Weight of the sample before drying (g);

[0171] m2——Weight of the sample after drying (g).

[0172] Calculate the average moisture content of the parallel samples.

[0173] Additional Example: After the sampler issues a sampling command, the control system begins to read and store the online moisture meter measurement data. The storage frequency is no less than 5 times, and the storage duration is determined by the conveying speed of the process equipment and the coverage area of ​​the sampling container. In principle, the material corresponding to the recorded data and the sample material are within the same cross-sectional area.

[0174] Further optimizations include integrating a label printer to facilitate samplers in marking sample information and reducing workload. After sampling, the control system automatically prints material information, sampling location, sampling time, and average moisture content on self-adhesive stickers, which samplers can then affix to the corresponding sealed box / bag to prevent sample confusion during subsequent oven-drying testing.

[0175] Finally, it should be noted that the concept, specific structure, and technical effects of this utility model have been clearly and completely described above in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections and connection relationships mentioned herein do not simply refer to direct connection of components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

Claims

1. An improved online sampling device for process equipment, comprising a control system (7) connected to several online moisture meters (8) inside the upper part of the processing equipment (9), characterized in that, Also includes: Follow-up system (1) is symmetrically arranged on the sampling point box (91) above the processing equipment (9) to drive the lifting system (2) connected to it to reciprocate along the conveying surface of the main conveyor belt (92); The lifting system (2) is connected to each follower system (1) to drive the rotating system (3) connected to it to move up and down. The rotating system (3) is connected to each lifting system (2) to drive the material handling system (4) connected to it to rotate. The material handling system (4) is connected to the rotating system (3) and is used to grab materials and put them into the corresponding discharge system (5). The discharge system (5) is set at one end of the corresponding follow-up system (1) and is used to collect materials.

2. The improved online sampling device for process equipment according to claim 1, characterized in that, The sampling point box (91) has an installation port at both ends of its upper part; the follow-up system (1) includes: Linear module (11) is connected to the sampling point box (91) at the mounting port; A drive unit (12) is connected above one side of the linear module (11) to provide power to the linear module (11); Slider (13) is slidably connected to linear module (11); Among them, the slider (13) can move synchronously with the main conveyor belt (92); the drive motor (12) is connected to the control system (7).

3. The improved online sampling device for process equipment according to claim 1 or 2, characterized in that, The lifting system (2) includes: The upper end of the lifting module (21) is connected to the slider (13); The lifting drive motor (22) is connected to the top of the lifting module (21) and provides power to the lifting module (21); The lifting slider (23) is slidably connected to the lifting module (21); The lifting slider (23) reciprocates along a straight line perpendicular to the conveying surface of the main conveyor belt (92), and the lifting drive (22) is controlled by the control system (7) so that the lifting slider (23) can accurately control the relative distance with the main conveyor belt (92).

4. The improved online sampling device for process equipment according to claim 1, characterized in that, The rotating system (3) includes: A swing driver (31) is connected to a lifting slider (23) on one side; A swing arm (32) is connected at one end to the drive shaft of the swing driver (31); The swing arm (32) is driven by the swing driver (31) and can rotate around an axis perpendicular to the conveying surface of the main conveyor belt (92) by a certain angle.

5. The improved online sampling device for process equipment according to claim 1, characterized in that, The material handling system (4) includes: The upper end of the gripper (41) is connected to the other end of the swing arm (32); The grab (42) is symmetrically connected to both ends of the gripper (41). The grab (42) is connected to the corresponding fingers of the gripper (41), and the number of fingers is the same as the number of fingers of the gripper (41). Driven by the fingers of the gripper (41), it can close or open at a certain angle. Among them, the grab bucket (42) can grab the material above the main conveyor belt (92) at a fixed point and depth.

6. The improved online sampling device for process equipment according to claim 1, characterized in that, The discharge system (5) includes: Inclined groove (51), one end of which passes through the wall panel of the sampling point box (91) and is fixed to the wall panel of the box, and the end is located inside the sampling point box (91); The upper end of the collection bin (52) is connected to the other end of the collection bin (52); The material collection platform (53) is set at the lower outlet of the material collection bin (52) via a connecting frame.

7. The improved online sampling device for process equipment according to claim 1, characterized in that, A protective cover is also provided above the sampling point box (91) on the outside of each follow-up system (1).

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