Ultrasonic creep testing device for multi-lignin plant material

Abstract

The utility model belongs to the field of agricultural machinery, and particularly relates to an ultrasonic creep testing device for multi-lignin plant materials, which comprises a compression device, an ultrasonic device is mounted at the lower part of an extrusion part of the compression device, and the ultrasonic device is propped against a pressure cover plate of a material compression bin through an amplitude-change pole; the system further comprises a temperature sensor arranged in the material compression bin and a pressure sensor arranged below the material compression bin, the temperature sensor and the pressure sensor respectively detect the temperature in the material compression bin and the pressure borne by the material compression bin in real time, and detection data are uploaded to an upper computer through a data acquisition module. The testing device provided by the embodiment of the utility model can monitor the pressure, the material temperature, the material volume and the material density in the material compression process and generate corresponding change curves on the upper computer, and the curves can intuitively reflect the change of each physical parameter of the material in the creep process. Therefore, researchers are helped to find compression parameters which are most energy-saving and best in compression effect and are suitable for various materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to plant material research technology, concretely is a kind of ultrasonic wave multi-lignin plant material creep testing device. BACKGROUND

[0002] The multi-lignin plant formed in agricultural production such as caragana and straw is usually loose accumulation, which brings inconvenience to intensive agricultural production, large-scale collection and transportation and storage. For example, after rubbing and crushing, the multi-lignin plant such as caragana forms a filamentous material with a length of about 80 mm and a diameter of 2 mm-6 mm. After separating the cellulose and lignin, the forage intake rate of livestock can be improved. Therefore, rubbing and crushing is of great significance for animals to further absorb nutrients. However, the loose structure after rubbing and crushing is not conducive to commercialization, and the conversion rate of the rubbed and crushed material to cellulose ethanol during fermentation is low, which is not conducive to the full absorption of nutrients by livestock. Therefore, further compression treatment of the rubbed and crushed material is particularly necessary.

[0003] When compressing the material, the temperature, density and other parameters during the creep process of the material are in dynamic change. The amount of pressure applied and the time when the optimal compression state is reached are in the stage of exploration. Moreover, there are many multi-lignin plants that can be used as livestock feed, and the creep characteristics of different materials are different. During the compression process, the parameters in the compression creep of different materials do not follow the same change trend. Therefore, the present application aims to provide a technology for testing the creep characteristics of plant materials during compression, so as to help researchers find the most energy-saving and best compression parameters for different types of materials. Based on this, the plant materials can be compressed scientifically, the relatively dispersed materials can be collected, treated and transported, the use cost can be reduced, the utilization rate can be improved, and the planting industry chain can be extended. SUMMARY

[0004] The utility model discloses a kind of ultrasonic wave multi-lignin plant material creep testing devices, to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of ultrasonic wave multi-lignin plant material creep testing device, including fixedly installed installation frame on test rack, compression device is installed longitudinally on installation frame, material compression bin is set in the lower side of compression device, and the top of material compression bin is open and matches the pressure cover plate of active setting;Compression device has extrusion part, and the lower part of extrusion part is installed ultrasonic device, and the ultrasonic device is touched by pressure cover plate through amplitude rod top;The testing device further includes temperature sensor arranged in material compression bin and pressure sensor arranged below material compression bin, temperature sensor and pressure sensor detect the temperature in material compression bin and the pressure suffered by material compression bin respectively in real time, and detection data is uploaded to host computer by data acquisition module.

[0006] In the above technical solution, the ultrasonic treatment can fully destroy the cell wall structure of the straw, the compression device is connected with the ultrasonic device, the ultrasonic device converts high-frequency ultrasonic waves into ultrasonic high-frequency vibration, and transmits the high-frequency vibration pressure to the pressure cover plate through the amplitude horn. During the high-frequency vibration process, the material itself is displaced, the gaps are filled, and the material produces a thermal effect, so the compression and solidification of the material can be accelerated. During the compression process, the pressure and temperature of the material change constantly, the temperature sensor and the pressure sensor transmit the real-time measurement data to the upper computer, and form the temperature change curve and the pressure change curve. The changes of these curves can directly reflect the pressure and temperature parameters in the creep process of the plant material, and provide a basis for finding the best compression parameters that are most energy-saving and have the best compression effect for various materials. In addition, the ultrasonic treatment can significantly improve the degree of destruction of the plant cell wall structure, which helps to improve the enzymatic efficiency and saccharification effect. Practice has proved that the conversion rate of straw into cellulose ethanol in the fermentation process after ultrasonic compression is more than 20% higher than that without ultrasonic treatment.

[0007] As a preferred solution, the area of any height of the inner cavity of the material compression bin is equal, such as the inner cavity of the material compression bin is columnar or cubic. A laser displacement measurement sensor is installed on the mounting rack, the laser emitted downward by the laser displacement measurement sensor is perpendicular to the pressure cover plate, and the measurement data is uploaded to the upper computer through the data acquisition module, and the volume change curve in the creep process of the material is generated on the upper computer. Since the cross-sectional area of the material does not change during the compression process, the density change in the compression creep process of the material can also be directly reflected through the volume change curve of the material. Preferably, a weighing sensor is installed on the test bench, which is used to measure the weight of the material put into the material compression bin, and the data is uploaded to the upper computer through the data acquisition module. The weighing sensor can automatically weigh the weight of the added material, and combined with the data of the laser displacement measurement sensor, the density change in the compression creep process of the material can be displayed in real time on the upper computer.

[0008] As a preferred solution, the test device includes a heating device for heating the material compression bin. Preferably, the heating device is arranged in the material compression bin, and the material compression bin has a double-layer structure including an outer shell and an inner shell, and an isolation cavity is formed between the outer shell and the inner shell. The heating device includes a heating resistance wire arranged in the isolation cavity. The original working temperature of the material compression bin is set by controlling the heating resistance wire, so that the device can test the creep law of the same material under different temperatures, and the creep test of different materials under different temperatures can find the best compression temperature parameters that are most energy-saving and have the best compression effect for various materials.

[0009] As a preferred solution, the pressure sensor has two, two pressure sensors are installed on the test bench table, and respectively contact the front and rear of the middle part of the back of the material compression bin.

[0010] As a preferred solution, the compression device includes a compression cylinder, the extrusion part is a telescopic shaft of the compression cylinder, and the telescopic shaft is located directly above the pressure cover plate.

[0011] The present application provides a set of comprehensive detection equipment for researching the creep process characteristics of different types and different characteristics of multi-lignin plant materials, and has the following beneficial effects:

[0012] (1) The ultrasonic device converts high-frequency ultrasonic waves into ultrasonic high-frequency vibration, and transmits the high-frequency vibration pressure to the pressure cover plate through the amplitude horn 8. During the high-frequency vibration process, the material itself is displaced, the gap is filled, and the material produces a thermal effect, so the compression and solidification of the material can be accelerated.

[0013] (2) Ultrasonic treatment can significantly improve the degree of destruction of plant cell wall structure, which helps to improve the enzymatic efficiency and saccharification effect. Practice has proved that the ratio of straw converted into cellulose ethanol in the fermentation process after ultrasonic compression is more than 20% higher than that without ultrasonic treatment

[0014] (3) During the compression process, the pressure change curve, the material temperature change curve, the material volume change curve and the material density change curve are displayed on the upper computer in real time. Through these curves, the change characteristics of physical quantities such as pressure, temperature, volume and density in the creep process can be directly observed, so that the best compression temperature parameters suitable for various materials can be found. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 The front view of the ultrasonic multi-lignin plant material creep test device provided by the present application is shown in the drawings.

[0017] Figure 2 The right view of the ultrasonic multi-lignin plant material creep test device is shown in the drawings.

[0018] In the figure, test bench 1, material compression bin 2, mounting frame 3, laser displacement measurement sensor 4, air cylinder 5, ultrasonic device 6, electromagnetic reversing valve 7, amplitude bar 8, pressure strain sensor 9, weighing sensor 10, temperature sensor 11, air treatment triplex kit 12, power supply assembly 13, data acquisition module 14, heating resistance wire 15, isolation cavity 16, pressure cover plate 17. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below with the accompanying drawings and examples, so that the implementation process of how the present application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented.

[0020] Figures 1-2 For an embodiment of the present application, an ultrasonic multi-lignin plant material creep test device, the test device comprises a test bench 1, a mounting frame 3 is fixedly arranged on the tabletop of the test bench 1, the mounting frame 3 has a cylinder mounting arm on the front side, a data acquisition module 14 and a power supply assembly 13 are arranged on the back of the mounting frame 3, in addition, the test device further comprises an upper computer (not shown), and the upper computer takes a computer as a carrier. Figure 1 As can be seen, the air cylinder 5 is longitudinally mounted on the cylinder mounting arm, the ultrasonic device 6 is mounted on the lower part of the telescopic shaft, and the material compression bin 2 is arranged directly below the air cylinder 5. The inner cavity of the material compression bin 2 used in the embodiment is a vertical space with equal cross sections, such as a cube or a cylinder. The top of the material compression bin 2 is open and is provided with a pressure cover plate 17 matching the inner cavity. The aforementioned ultrasonic device 6 is connected to the middle part of the pressure cover plate 17 through the lower part of the amplitude bar 8, so that the test device can convert high-frequency ultrasonic waves into ultrasonic high-frequency vibration during the compression process, and the high-frequency vibration pressure is transmitted to the pressure cover plate 17 through the amplitude bar 8.

[0021] The aforementioned test device extrudes the material through the air cylinder 5 during work. The air cylinder 5 is connected to the electromagnetic reversing valve 7 arranged on one side of the mounting frame 3 through a high-pressure air pipe. The electromagnetic reversing valve 7 is connected to the air treatment triplex kit 12 arranged on the test bench 1. The electromagnetic reversing valve 7 is connected to the upper computer and is controlled by the upper computer to control the working state of the electromagnetic reversing valve 7, and further control the working state of the air cylinder 5. For example, when the test is completed, the electromagnetic reversing valve 7 receives the control signal of the upper computer to complete pressure relief. At this time, the pressure cover plate 17 can be removed from the inner shell 16, and the material can be separated.

[0022] The test device provided in the embodiment can detect the pressure, material temperature, material volume and density of the material (such as a shrub) during the compression process, and generate corresponding change curves on the upper computer. These curves can directly reflect the changes of various physical parameters of the material during the creep process, thereby helping researchers to find the most energy-saving and best compression parameters for various types of materials. Specifically:

[0023] First, two identical pressure strain sensors 9 are arranged on the test bench 1, which respectively contact the front and rear of the middle part of the back of the material compression chamber 2. During the compression process, they monitor the pressure on the material in real time and send the data to the host computer through the data acquisition module 14, and finally generate a pressure change curve during the material creep process on the host computer.

[0024] Second, the laser displacement measuring sensor 4 is installed on the cylinder mounting arm of the mounting frame 3, and the laser displacement measuring sensor 44 is connected to the data acquisition module 14 through the tail signal line. The laser emitted downward is perpendicular to the pressure cover plate 17, and during the compression process, the laser displacement measuring sensor 4 uploads the measurement data to the host computer through the data acquisition module 14, and generates a volume change curve during the material creep process on the host computer (the volume of the material is inversely proportional to the height of the pressure cover plate 17). At the same time, a weighing sensor 10 is arranged below the material compression chamber 2, which measures the weight of the material added to the material compression chamber 2 and sends the data to the host computer through the data acquisition module 14. Since the areas at each height in the inner cavity of the material compression chamber 2 are equal, combined with the measurement data of the aforementioned laser displacement measuring sensor 4, the density change of the material during the compression creep process is generated on the host computer. Combined with the pressure change curve, the volume change and density change of the material under a certain pressure value can be intuitively reflected.

[0025] In addition, a temperature sensor 11 is arranged inside the material compression chamber 2, which is used to measure the temperature of the material in real time. In this embodiment, when the compression work starts, the ultrasonic device converts high-frequency ultrasonic waves into ultrasonic high-frequency vibration, and transmits the high-frequency vibration pressure to the pressure cover plate through the amplitude horn 8. During the high-frequency vibration process, the material itself is displaced, which will cause the material to produce obvious thermal effect. The temperature sensor 11 detects the temperature of the material and uploads it to the host computer, and generates a temperature change curve on the host computer to reflect the change of the temperature parameter of the material during the compression creep process.

[0026] Finally, the test device can set the temperature of the material heating chamber 2 by independently setting a heating device, that is, it can provide a constant initial temperature for material compression. From Figure 2 It can be seen that the material compression chamber 2 used is a double-layer structure, including an outer shell and an inner shell, and an isolation cavity 16 is formed between the outer shell and the inner shell; the heating device includes a heating resistance wire 15 arranged in the isolation cavity 16. The original working temperature of the material compression chamber 22 is set by controlling the heating resistance wire 15, so that the device can test the creep law of the same material under different temperatures, and based on this, different materials can be tested for creep under different temperatures to find the best compression temperature parameter that is most energy-saving and has the best compression effect for various materials.

[0027] The compression cake (block) of the multi-lignin plant material such as caragana is an effective method to improve the decomposition of the multi-lignin plant material such as caragana by rumen microorganisms, and the creep characteristics in the compression process are studied by the test device provided in the embodiment, which is of great significance to improve the compression efficiency of the material and find the compression material parameters suitable for animal absorption.

[0028] As some words are used in the description and claims to refer to certain components, those skilled in the art should understand that the same components can be referred to by different names by hardware manufacturers. The description and claims of the present application do not distinguish components by name, but by the functional difference between components. As mentioned throughout the description and claims, "including" is an open term, which should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range, and those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0029] It should be noted that the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that the products or systems including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such products or systems. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the product or system including the element.

[0030] The above description shows and describes several preferred embodiments of the present application, but as mentioned above, the present application is not limited to the forms disclosed herein, and should not be considered as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the application conceived herein by the above teachings or related art or knowledge. Any modification and change made by those skilled in the art without departing from the spirit and scope of the present application shall be within the protection scope of the claims of the present application.

Claims

1. An ultrasonic poly-lignin plant material creep testing device, characterized by: The test device comprises a mounting rack fixedly installed on a test bench, a compression device longitudinally installed on the mounting rack, a material compression bin arranged right below the compression device, and a pressure cover plate movably arranged on the top of the material compression bin; the compression device has an extrusion part, and an ultrasonic device is installed on the lower part of the extrusion part, and the ultrasonic device is in contact with the pressure cover plate through a variable amplitude rod; the test device further comprises a temperature sensor arranged in the material compression bin and a pressure sensor arranged below the material compression bin, the temperature sensor and the pressure sensor respectively detect the temperature in the material compression bin and the pressure on the material compression bin in real time, and upload the detection data to an upper computer through a data acquisition module.

2. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 1, wherein: The area of the inner cavity of the material compression bin at any height is equal; a laser displacement measurement sensor is installed on the mounting rack, the laser emitted downward by the laser displacement measurement sensor is perpendicular to the pressure cover plate, and the measurement data is uploaded to the upper computer through the data acquisition module, the volume of the compressed material is calculated according to the displacement difference of the pressure cover plate, and then the density of the compressed material is calculated.

3. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 2, wherein: A weighing sensor is installed on the test bench, which is used to measure the weight of the material put into the material compression bin and upload the data to the upper computer through the data acquisition module.

4. An ultrasonic poly-lignin plant material creep testing device as defined in claim 1, wherein: The test device comprises a heating device for heating the material compression bin.

5. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 4, wherein: The material compression bin has a double-layer structure comprising an outer shell and an inner shell, and an isolation cavity is formed between the outer shell and the inner shell, and the heating device comprises a heating resistance wire arranged in the isolation cavity.

6. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 1, wherein: The pressure sensor has two, and the two pressure sensors are installed on the tabletop of the test bench and respectively contact the front and rear parts of the middle part of the bottom surface of the material compression bin.

7. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 1, wherein: The compression device comprises a compression cylinder, and the extrusion part is a telescopic shaft of the compression cylinder, and the telescopic shaft is located right above the pressure cover plate.

8. An ultrasonic poly-lignin plant material creep testing device as claimed in claim 7, wherein: The compression device further comprises an electromagnetic reversing valve and an air treatment three-way kit, the compression cylinder is connected with the electromagnetic reversing valve through a high-pressure pipe, and the electromagnetic reversing valve is connected with the air treatment three-way kit; when the test is completed, the electromagnetic reversing valve receives a control signal from the upper computer, and the compression cylinder is reset at this time.

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