A drying test bench for sheet-like, plate-like material

Abstract

The utility model discloses a kind of drying test benches for sheet, plate material, including closed box and control device, box is equipped with a clamping baffle, clamping baffle is divided into chamber I and chamber II being left and right setting by box, the top of chamber I is communicated with the top of chamber II, the bottom of chamber I is communicated with the bottom of chamber II, the bottom of box is equipped with air temperature and humidity adjusting device;The upper portion of clamping baffle is equipped with a slit, a slide rail is penetrated at slit, slide rail is equipped with sliding block, sliding block is equipped with weighing sensor and drying tray on, slit is higher than drying tray, sliding block is driven to reciprocate along slide rail by drive motor;Slide rail upper portion is equipped with temperature and humidity sensor, air temperature and humidity adjusting device, drive motor, weighing sensor and temperature and humidity sensor are electrically connected with control device respectively.The utility model can be well controlled the moisture content of drying sample in box, the requirement of material drying environment is simulated to the maximum extent, it is helpful to the research of production process.

Description

Technical Field

[0001] This utility model relates to the field of drying technology for sheet-like materials, specifically to a drying test bench for sheet-like and plate-like materials, which is suitable for research on drying process technology for sheet-like materials. Background Technology

[0002] Flake materials generally refer to sheet-like, plate-like, and strip-like materials, and the main drying method currently used is hot air drying. The processing of flake materials has become an important part of the food processing industry. However, improving the quality and optimizing production processes of flake materials has been hampered by the lack of specialized testing equipment for granular and sheet-like materials. Therefore, for a long time, flake material products have not been able to fully contribute to the development of new products, hindering progress in various aspects of the industry.

[0003] Previous testing conditions for sheet materials had the following shortcomings:

[0004] 1) New product trials must rely on actual production: Traditional research on sheet material processes mainly relies on actual production. Based on the producer's requirements, the production process parameters of sheet materials are continuously explored and investigated during production to obtain better sheet material quality. Purposeful experimental research cannot be fundamentally separated from actual production, resulting in significant uncertainty in experimental results, greatly diminishing the significance of the experiments, and inevitably causing a waste of resources, time, and energy consumption.

[0005] 2) Significantly affected by environmental factors: Due to the complexity of the production environment, it is impossible to construct stable test conditions. As a result, different environments greatly affect the test results, and ultimately, the uniformity and certainty of the test results cannot be guaranteed. Therefore, there is often a great deal of inaccuracy in the test results.

[0006] 3) Test parameters cannot be determined: The process parameters of the drying process of sheet materials have high requirements for the experience of the participants in the drying process of sheet materials. Different personnel with different levels of experience lead to inconsistent test results, and accurate test parameters are even more difficult to obtain, which directly affects the success rate of the test research.

[0007] 4) Lack of specialized testing equipment for sheet materials: Although my country has a long history of using sheet materials, there is currently no specialized equipment designed specifically for testing and researching them. This has led to the sheet material industry's development focusing primarily on quantity, while efforts to develop new products and explore new processes have been hampered. The industry needs specialized testing equipment for sheet materials to provide rigorous and comprehensive support for development and research.

[0008] To meet the reliability requirements of test results and ultimately obtain accurate process parameters, it is essential to ensure the controllability of test conditions. This is especially true for the drying process of sheet materials, which places high demands on the test environment. The drying process environment required by the tester must be simulated so that the test results can reflect the true quality of sheet materials under different parameters. This will allow us to explore the best production parameters and achieve a comprehensive improvement in product quality and process.

[0009] Based on the above needs, a drying test bench for research on drying process technology of sheet materials was developed and designed to fill this gap in the industry. Utility Model Content

[0010] To address the limitations of existing technologies in conducting targeted drying tests on sheet-like and plate-like materials, reduce the impact of environmental factors, more accurately obtain drying processes for sheet-like and plate-like materials, achieve better product quality, and improve drying test efficiency, this invention provides a drying test bench for sheet-like and plate-like materials, used for research on related drying process technologies.

[0011] The technical solution adopted is as follows:

[0012] A drying test bench for sheet and plate materials includes a sealed chamber and a control device mounted on the chamber. The chamber has an internal partition dividing it into two chambers, I and II, arranged horizontally. The top of chamber I communicates with the top of chamber II, and the bottom of chamber I communicates with the bottom of chamber II. An air temperature and humidity regulating device is located at the bottom of the chamber to regulate the temperature and humidity of the drying air. A slit is provided at the upper part of the partition, through which a slide rail passes. A slider is mounted on the slide rail, and a weighing sensor and a drying tray for holding the material are mounted on the slider. The slit extends above the drying tray. The slider is driven by a drive motor to reciprocate along the slide rail. A temperature and humidity sensor is also located inside the chamber above the slide rail. The air temperature and humidity regulating device, drive motor, weighing sensor, and temperature and humidity sensor are electrically connected to the control device.

[0013] Furthermore, the air temperature and humidity regulating device includes a heater, a cooling radiator, a steam humidifier, a circulating fan, and a pressure equalizing plate. The steam humidifier and the circulating fan are disposed in chamber I, and the heater and the cooling radiator are disposed in chamber II. The steam humidifier is disposed near the inlet end of the circulating fan, and the pressure equalizing plate is disposed at the outlet end of the circulating fan and is sealed to the partition plate and the inner wall of the housing to form a humid and hot gas generating chamber.

[0014] Preferably, the pressure equalizing plate is formed with a plurality of air vents; the drying tray is provided with pores for gas flow, the size of which is smaller than the size of the material to be dried.

[0015] Furthermore, a dehumidification port communicating with the outside of the box is provided on the side wall of the box located above the slide rail, and an air intake port is provided on the side wall of the box located in the humid and hot gas generating chamber.

[0016] Preferably, the vent and the air intake are each provided with a control valve electrically connected to the control device.

[0017] Furthermore, the top of chambers I and II is provided with arc-shaped guide plates, which are used to guide the airflow.

[0018] Furthermore, the outer side of the enclosure is also provided with an insulation layer.

[0019] The technical solution of this utility model has the following advantages:

[0020] A. This utility model incorporates an air temperature and humidity control device within the chamber. After the airflow has been dried, it adjusts the temperature and humidity before re-drying the material, creating a circulating airflow. Because the temperature and humidity are adjusted promptly, the drying parameters for sheet and plate materials are easily controlled. First-hand process data can be accurately obtained from the test bench, maximizing the simulation of the drying environment requirements for sheet and plate materials. This provides a strong guarantee for exploring the effects of drying processes on sheet and plate materials under different conditions, enabling enterprises and relevant research institutes to study the production processes of sheet and plate material products.

[0021] B. This utility model has a weighing sensor installed under the drying tray, which can calculate the moisture content of the sample in real time, helping the testers to determine the temperature and humidity parameter setting conditions for different test stages.

[0022] C. The drying tray of this utility model can reciprocate between the rising and falling drying airflow zones under the drive of the slider, so that the material is evenly exposed to airflow from both the top and bottom sides, resulting in more uniform drying.

[0023] D. This utility model utilizes a control device to divide the drying process into stages, and the humidity of each stage can be input with different parameters and automatically controlled. According to the test conditions required by the test personnel, multiple stages can be combined with different times and different temperatures and humidity, and automatic control can be achieved through PLC program. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model, the drawings used in the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the overall structure of the drying test bench provided by this utility model.

[0026] Figure 2 for Figure 1 Schematic diagram of the medium pressure plate structure;

[0027] Figure 3 for Figure 1 Main view of the structure of the drying tray;

[0028] Figure 4 This is a schematic diagram of the main monitoring interface presented in the control device provided by this utility model.

[0029] Figure 5 The parameter setting interface displayed on the touch screen of the control device;

[0030] Figure 6 The data recording interface is displayed on the touchscreen of the control device.

[0031] The symbols provided in the diagram are explained as follows:

[0032] 1-Box

[0033] 1a-Cavity I, 1b-Cavity II, 1c-Dampness Exhaust Port, 1d-Air Intake Port

[0034] 2-Control device

[0035] 3-partition

[0036] 3a-slit

[0037] 4-Air temperature and humidity control device

[0038] 41-Heater, 42-Cooling radiator, 43-Steam humidifier, 44-Circulating fan

[0039] 45 - Pressure equalizing plate, 451 - Vent hole

[0040] 5-Slide rail; 6-Slider; 7-Weighing sensor

[0041] 8-Drying Tray

[0042] 81-Porosity

[0043] 9-Drive motor; 10-Temperature and humidity sensor; 20-Arc-shaped guide plate; 30-Insulation layer

[0044] 40-Steam Generator

[0045] a-Hot and humid gas generation chamber, b-Rising dry airflow, c-Descending dry airflow. Detailed Implementation

[0046] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0047] like Figure 1As shown, this utility model provides a drying test bench for sheet and plate-shaped materials. The test bench includes a sealed chamber 1 and a control device 2 located outside the chamber 1. The control device 2 is a touch screen. Inside the chamber 2, there is a vertically arranged partition 3 that divides the chamber 1 into two chambers, I1a and II1b, arranged left and right. The top of chamber I1a is connected to the top of chamber II1b, and the bottom of chamber I1a is connected to the bottom of chamber II1b. The bottom of the chamber 1 is equipped with an air temperature and humidity control system. The regulating device 4 is used to regulate the temperature and humidity of the drying air. A slit 3a is provided at the upper part of the partition 3, through which a slide rail 5 passes. Both ends of the slide rail 5 are fixedly connected to the inner wall of the housing 1. Multiple sliders 6 are provided on the slide rail 5. Each slider 6 is equipped with a weighing sensor 7 and a drying tray 8 for holding materials. The weighing sensor 7 can weigh the drying tray 8 in real time and transmit the weighing signal to the control device 2, which can then display the moisture content of the materials in real time. The slit 3a of the partition 3 is higher than the drying tray 8. The slider 6 is driven by a drive motor 9 to reciprocate along the slide rail 5, causing the slider 6 and the drying tray 8 to pass back and forth through the slit 3a. A temperature and humidity sensor 10 is also provided inside the housing 1 above the slide rail 5 to monitor the temperature and humidity of the drying gas in real time and transmit the data to the control device 2. The air temperature and humidity regulating device 4, drive motor 9, weighing sensor 7, and temperature and humidity sensor 10 are electrically connected to the control device 2. In chamber I1a, the air temperature and humidity regulating device 4 generates an upward drying airflow b from bottom to top, which penetrates the material on the drying tray 8 and enters chamber II1b. In chamber II1b, a downward drying airflow c is generated from top to bottom, which penetrates the material on the drying tray 8 and re-enters the air temperature and humidity regulating device 4 for temperature and humidity regulation, forming another upward drying airflow that penetrates the drying tray 8. The drying tray 8 moves back and forth on the slide rail, and under the action of the upward drying airflow b and the downward drying airflow c, the material on the drying tray 8 is dried quickly.

[0048] The air temperature and humidity regulating device 4 includes a heater 41, a cooling radiator 42, a steam humidifier 43, a circulating fan 44, and a pressure equalizing plate 45. The steam humidifier 43 and the circulating fan 44 are located in chamber I1a, and the heater 41 and the cooling radiator 42 are located in chamber II1b. They are used to regulate the air temperature. The steam humidifier 43 is located at the inlet end of the circulating fan 44, and the pressure equalizing plate 45 is located at the outlet end of the circulating fan 44. It is sealed to the partition plate 3 and the inner wall of the housing 1 to form a humid and hot gas generating chamber a. The heater 41 is used to heat the air drawn into the test bench, the steam humidifier 43 is used to humidify the air drawn into the test bench, and the cooling water device 42 is used to cool the circulating air in the chamber. Through the synergistic effect of the heater 41 and the cooling water device 42, the purpose of controlling the gas temperature inside the test bench is achieved. The steam generator 40 is connected to the steam humidifier 43 in the humid gas generation chamber a via a pipeline. The steam humidifier 43 is a pipeline with nozzles. The steam from the steam generator 40 is evenly injected into the humid gas generation chamber a through the nozzles to humidify the heated air.

[0049] Under the suction action of the circulating fan 44, the air in chamber II is conditioned by the heater 41 and the cooling radiator 42 and then drawn into the humid and hot gas generating chamber. In the humid and hot gas generating chamber a, the humidity of the hot air is further conditioned so that the airflow discharged through the outlet of the circulating fan 44 maintains a constant temperature and humidity, which can greatly improve the stability of product quality.

[0050] The pressure equalizing plate 45 structure used in this utility model is as follows: Figure 2 As shown, it has several vent holes 451 formed on it, which can make the airflow distribution more uniform on the entire pressure equalization plate 45.

[0051] like Figure 3 As shown, a mesh-like perforation 81 is provided on the drying tray 8. The size of the perforation 81 is smaller than the size of the material to be dried. Flake or plate-like materials can be placed directly on the drying tray 8 with the mesh-like airflow perforation. The modulated airflow discharged from the humid heat gas generation chamber a passes through the mesh-like airflow perforation 81 to dry the material on the drying tray 8.

[0052] A temperature and humidity sensor 10 is installed on the upper part of the chamber 1 to collect real-time temperature and humidity data in the chamber and transmit it to the control device 2. The humid gas generating chamber a is equipped with an air temperature and humidity regulating device 4 connected to the control device 2. The control device 2 controls the air temperature and humidity regulating device 4 to adjust the air temperature and humidity in the humid gas generating chamber a to the preset threshold according to the set temperature and humidity preset threshold and the current temperature and humidity collected, so that the regulated air dries the material in the drying tray.

[0053] To maintain a constant internal and external air pressure within the housing 1 and for ventilation and dehumidification purposes, this invention provides a dehumidification outlet 1c on the side wall of the housing 1 located above the slide rail 5, communicating with the outside of the housing 1. An air intake 1d is also provided on the side wall of the housing 1 located within the humid and hot gas generating chamber a. Preferably, control valves are provided at both the dehumidification outlet 1c and the air intake 1d (see details). Figure 4 An air inlet valve is installed at the air intake, and preferably a dehumidifying fan is installed at the dehumidifying outlet. Figure 4 As shown, the control valve is interlocked with the circulating fan. Additionally, this invention also provides arc-shaped guide plates 20 at the top of chambers I1a and II1b, which guide airflow to form an airflow circulation.

[0054] The drying test bench provided by this utility model realizes the self-circulation of drying airflow, providing a suitable temperature and humidity environment for testing sheet-like and plate-like materials. A circulating fan blows the generated hot and humid air onto the drying trays for material drying. An arc-shaped guide plate 20 further regulates the temperature and humidity of the drying airflow after it passes through the test material, and then reintroduces it into the hot and humid gas generation chamber, achieving airflow circulation and energy saving (see circulation direction). Figure 1 (As indicated by the arrow). The drive motor 9 drives the slider 6, drying tray 8, and weighing sensor 7 to reciprocate between chamber I and chamber II, ensuring uniform airflow on both sides of the material and consistent drying. The dehumidification port 1c and the air intake port 1d maintain pressure balance inside the test bench, while simultaneously expelling excessively humid air and introducing external air to achieve air exchange and balance the pressure difference between the inside and outside of the test bench. An insulation layer 30 is also installed on the outer side of the chamber 1, and the gaps are sealed to ensure that the test is conducted under relatively sealed conditions, ensuring the accuracy of the test data and providing insulation while saving energy.

[0055] The control device 2 in this invention includes a touch screen and a PLC controller. The PLC controller calculates the material moisture content in real time based on the program and the collected weight information of the drying tray 8, controls the slider to drive the drying tray and material to reciprocate, controls the air temperature and humidity regulating device 4 throughout the process, and monitors the temperature and humidity values ​​inside the chamber through the touch screen human-machine interface. Figure 4 and Figure 5 As shown, the temperature and humidity inside the chamber are controlled at different times by collecting data from the temperature and humidity sensor 10, and the test data is displayed in real time. Figure 6 As shown, it automatically records data and generates control curves, using a PLC program to achieve full control and monitoring, and the human-machine interface is accessed via a touchscreen. It collects data from temperature and humidity sensors to achieve different temperature and humidity controls at different times, and displays experimental data in real time. It can automatically record data and generate control curves.

[0056] The entire test bench consists of two interconnected chambers. A circulating fan circulates the airflow between the two chambers. The humid heat generation chamber provides the temperature and humidity required by the user to ensure the drying of sheet-like and plate-like materials. Through the circulation system of the drying airflow, the material is ensured to be dried under uniform circulation conditions, resulting in uniform and stable heating and drying of the test material.

[0057] The humid gas generation chamber provides a stable supply of humid air, which is exhausted by a circulating fan. A pressure equalizing plate evenly distributes this humid air onto the sheet or plate-shaped materials. The control unit collects sensor signals in real time to control the heater and steam generator to increase the temperature and humidity within the drying chamber, and to control the cooling radiator and dehumidification vents to reduce temperature and humidity. The operation of all components is controlled by a PLC program. The PLC adjusts the actions of each component based on the collected temperature and humidity information from inside the test bench, ensuring that the drying process of the sheet and plate-shaped materials meets the environmental requirements for different times, temperatures, and humidity levels.

[0058] Users set the desired temperature, humidity, and corresponding time via a touchscreen, which is then transmitted to the PLC. The PLC controls the entire process and automatically records the data. The touchscreen also displays real-time temperature and humidity information within the drying chamber. The test bench provided by this invention can achieve a drying temperature of 25℃-85℃, with a control error of ±1℃ based on the set temperature; and a relative humidity of 40%-90%, with a control error of ±5% based on the set humidity. It is monitored via a visual touchscreen control panel.

[0059] Figure 4 The main monitoring interface shown is used to observe real-time temperature and humidity and the operation of various components during the test phase. The following options are available at the bottom of the interface: Startup interface (for inputting personnel information before the test), Data recording (automatically recording data throughout the test), Real-time curve (automatically generating data curves throughout the test), Historical curve (recording previous test curves), Alarm interface (alarm data recording), and Manual frequency (for switching between automatic and manual modes).

[0060] Figure 5 The parameter setting interface shown is used by the test personnel to input the values ​​of the parameters that need to be controlled.

[0061] Figure 6 The data recording interface shown allows for the export and automatic recording of experimental data.

[0062] The control device provided by this invention enables full-process monitoring, automatic control, and intelligent management. Before the experiment begins, the experimenter only needs to set the various parameters of the experimental conditions in the control device. Through the PLC control of the test bench, different control parameters can be matched to achieve the experimental conditions required by the user. The entire test bench has automatic temperature control, heat preservation, humidity control, and moisture retention functions. During the experiment, the touch screen can display all experimental conditions on the interface and automatically record all data, generating experimental data curves, providing strong support for exploring the experimental results.

[0063] This invention achieves both internal airflow circulation and external airflow supplementation, allowing both types of airflow circulation to coexist in the entire test bench. The circulating fan ensures that the warm and humidified airflow is evenly distributed throughout the drying space, passing over the test material and enabling self-circulation of the warm and humidified airflow within the drying test bench, thus ensuring a warm and humidified drying environment. By controlling the air intake and exhaust ports, the airflow inside and outside the test bench is exchanged, achieving pressure balance within the drying test bench. When the humidity of the heating airflow is too high, the heating and humidifying airflow is discharged while dry air is introduced, ensuring a scientifically sound and reasonable drying method.

[0064] Any aspects not covered in this utility model are applicable to the prior art.

[0065] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A drying test bench for sheet-like and plate-like materials, characterized in that, The test bench includes a sealed chamber (1) and a control device (2) mounted on the chamber (1). A partition (3) is provided inside the chamber (1), dividing the chamber (1) into two chambers, I (1a) and II (1b), arranged horizontally. The top of chamber I (1a) communicates with the top of chamber II (1b), and the bottom of chamber I (1a) communicates with the bottom of chamber II (1b). An air temperature and humidity regulating device (4) is provided at the bottom of the chamber (1) to regulate the temperature and humidity of the dry air. A slit (3a) is provided at the upper part of the partition (3). A slide rail (5) passes through the slit (3a), and a slider (6) is provided on the slide rail (5). A weighing sensor (7) and a drying tray (8) for holding materials are provided on the slider (6). The slit (3a) is higher than the drying tray (8). The slider (6) is driven by a drive motor (9) to move back and forth along the slide rail (5). A temperature and humidity sensor (10) is also provided in the box (1) located above the slide rail (5). The air temperature and humidity regulating device (4), drive motor (9), weighing sensor (7) and temperature and humidity sensor (10) are electrically connected to the control device (2).

2. The drying test bench according to claim 1, characterized in that, The air temperature and humidity regulating device (4) includes a heater (41), a cooling radiator (42), a steam humidifier (43), a circulating fan (44), and a pressure equalizing plate (45). The steam humidifier (43) and the circulating fan (44) are located in the chamber I (1a), and the heater (41) and the cooling radiator (42) are located in the chamber II (1b). The steam humidifier (43) is located near the inlet end of the circulating fan (44), and the pressure equalizing plate (45) is located at the outlet end of the circulating fan (44) and is sealed to the partition plate (3) and the inner wall of the housing (1) to form a humid and hot gas generating chamber (a).

3. The drying test bench according to claim 2, characterized in that, The pressure equalizing plate (45) has a plurality of ventilation holes (451); the drying tray (8) is provided with pores (81) for gas flow, the size of which is smaller than the size of the material to be dried.

4. The drying test bench according to claim 2, characterized in that, The side wall of the box (1) located above the slide rail (5) is also provided with a dehumidification port (1c) communicating with the outside of the box (1), and the side wall of the box (1) located in the humid heat gas generation chamber (a) is also provided with an air intake port (1d).

5. The drying test bench according to claim 4, characterized in that, The vent (1c) and the air intake (1d) are respectively equipped with control valves that are electrically connected to the control device (2).

6. The drying test bench according to claim 1, characterized in that, The top of chamber I (1a) and chamber II (1b) are also provided with arc-shaped guide plates (20), which are used to guide the airflow.

7. The drying test bench according to any one of claims 1-6, characterized in that, The outer side of the box (1) is also provided with a heat insulation layer (30).

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