Structure for determining the elastoplastic parameters of sugarcane material

Abstract

The present invention discloses a measuring structure for the elastoplastic parameters of sugarcane materials, which comprises a gland, a compression part, a pressure sensor, a stress-strain acquisition system, a terminal processor and a testing machine; the compression part is placed at the bottom of the testing machine, and an opening is formed at the top thereof, and each of the top and bottom of the side surface of the compression part is connected to a pressure sensor; one end of the gland corresponds to the opening, and the other end thereof is in transmission connection with the testing machine, and the testing machine drives the gland to move relative to the compression part; wherein, the pressure sensor is electrically connected to the stress-strain acquisition system; both the stress-strain acquisition system and the testing machine are electrically connected to the terminal processor. The present invention has the characteristics of accurately measuring the Young's modulus and Poisson's ratio of sugarcane materials and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of an elastic-plastic parameter measuring device, and in particular relates to a measuring structure for the elastic-plastic parameters of sugarcane material. Background Art

[0002] The sugar industry is a basic industry in the food industry, and is also a raw material industry for a variety of products such as papermaking, chemicals, fermentation, medicine, building materials, furniture, etc. It occupies an important position in the national economy.

[0003] Currently, the main method of obtaining sugarcane juice is to squeeze it with a sugarcane press, which has serious problems such as complex sugar extraction process, low sugar extraction efficiency, excessive energy consumption and a large amount of impurities in the sugarcane juice.

[0004] The crushing process typically accounts for approximately 40% of a sugarcane sugar mill's energy consumption, making sugarcane crushing technology crucial for energy conservation and consumption reduction. During sugarcane crushing, the lack of knowledge of the sugarcane material's Young's modulus and Poisson's ratio makes it impossible to predict the elastic-plastic changes that occur during crushing. Consequently, it's difficult to determine the optimal settings for parameters like the opening ratio and crushing speed of the sugarcane press, resulting in additional energy loss. However, understanding the sugarcane material's Young's modulus and Poisson's ratio also facilitates the optimized design of the crushing rollers, further improving crushing energy efficiency.

[0005] In view of this, it is necessary to provide a structure for measuring the elastic-plastic parameters of sugarcane material. Summary of the Invention

[0006] The purpose of the present invention is to provide a structure for measuring the elastic-plastic parameters of sugarcane material in view of the defects of the prior art.

[0007] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0008] A structure for measuring the elastic-plastic parameters of sugarcane material, comprising a pressure cover, a compression part, a pressure sensor, a stress-strain acquisition system, a terminal processor and a testing machine; the compression part is placed at the bottom of the testing machine, and an opening is provided at the top thereof, and the top and bottom sides of the compression part are each connected to a pressure sensor; one end of the pressure cover corresponds to the opening, and the other end thereof is transmission-connected to the testing machine, and the testing machine drives the pressure cover to move relative to the compression part; wherein the pressure sensor is electrically connected to the stress-strain acquisition system; the stress-strain acquisition system and the testing machine are both electrically connected to the terminal processor.

[0009] As a further improvement of the technical solution, the compression part includes a compression chamber and a pressure transmission plate; the compression chamber is provided with a top opening and a side opening; the pressure transmission plate is installed on the side opening and connected to the pressure sensor.

[0010] As a further improvement of the technical solution, the compression chamber is a polyhedron or a cylinder.

[0011] As a further improvement of the technical solution, a plurality of through holes are formed in the side surface and the bottom of the compression chamber.

[0012] As a further improvement of the technical solution, a plurality of through holes are formed in the transfer pressure plate.

[0013] As a further improvement of the technical solution, the diameter of the through hole is φ1mm - 10mm.

[0014] As a further improvement of the technical solution, a structure for measuring the elastoplastic parameters of sugarcane materials of the present invention further includes a sugarcane juice collection container; the sugarcane juice collection container is provided with a containing space, and the compression part is placed in the containing space; the pressure sensor is installed on the sugarcane juice collection container.

[0015] As a further improvement of the technical solution, a structure for measuring the elastoplastic parameters of sugarcane materials of the present invention further includes a mesh bag; the mesh bag is movably suspended on the pressing cover and is used for containing sugarcane materials.

[0016] As a further improvement of the technical solution, the pressing cover includes a push-pull rod and a pressure plate; one end of the push-pull rod is connected to the pressure plate, and the other end is connected to the testing machine in a transmission manner.

[0017] As a further improvement of the technical solution, a universal testing machine is adopted for the testing machine.

[0018] Advances of the present invention over the prior art:

[0019] 1. The present invention has a simple structure and is easy to use, has the function of accurately measuring the Young's modulus and Poisson's ratio of sugarcane materials, solves the problem that the effective improvement of sugarcane pressing energy efficiency cannot be achieved due to the unclear Young's modulus and Poisson's ratio of sugarcane materials, and has relatively low cost.

[0020] 2. A structure of the compression part of the present invention includes a compression chamber and a transfer pressure plate. A plurality of through holes are formed in both the compression chamber and the transfer pressure plate. The through holes can facilitate the drainage of the sugarcane juice generated during the compression process of the sugarcane materials, and can also reduce the fluid-structure coupling generated by the sugarcane materials and the sugarcane juice during the pressing process, so that the measured mechanical properties of the sugarcane materials are more accurate.

[0021] 3. The present invention uses a sugarcane juice collection container to collect the sugarcane juice generated by compressing the sugarcane materials, and the sugarcane juice collection container plays a supporting role for the pressure sensor; the transfer pressure plate can be suspended and installed on the sugarcane juice collection container through the pressure sensor, so that the transfer pressure plate is in a suspended state relative to the compression chamber. When the sugarcane materials in the compression chamber are compressed, the lateral force generated squeezes the transfer pressure plate, and the transfer pressure plate squeezes the pressure sensor. The pressure sensor measures the magnitude of the pressure it receives and transmits the measured data signal to the stress-strain acquisition system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0023] Figure 1 It is a schematic structural diagram of a structure for measuring the elastoplastic parameters of sugarcane materials according to the present invention;

[0024] Figure 2 It is a schematic structural diagram of the installation of a compression chamber in the sugarcane juice collection container according to the present invention;

[0025] Figure 3 It is a schematic structural diagram of the installation between the gland, the compression chamber and the pressure transfer plate according to the present invention;

[0026] Figure 4 It is a schematic structural diagram of the compression chamber according to the present invention;

[0027] Figure 5 It is a schematic structural diagram of the gland according to the present invention;

[0028] Names and serial numbers of each component in the figure: 1 - gland, 11 - push - pull rod, 12 - pressure plate, 2 - compression chamber, 21 - top opening, 22 - side opening, 3 - pressure transfer plate, 4 - pressure sensor, 5 - sugarcane juice collection container, 6 - stress - strain acquisition system, 7 - terminal processor, 8 - testing machine. SPECIFIC EMBODIMENTS

[0029] In order to enable those skilled in the art of this technology to better understand the technical solutions in this application, the following will clearly and completely describe the technical solutions of the present invention in conjunction with the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts should belong to the scope of protection of this application.

[0030] Embodiment 1:

[0031] As Figure 1 and 5As shown, a structure for measuring the elastic-plastic parameters of sugarcane material includes a pressure cover 1, a compression part, a pressure sensor 4, a stress and strain acquisition system 6, a terminal processor 7 and a testing machine 8; the compression part is placed at the bottom of the testing machine 8, and an opening is provided at the top thereof, and the top and bottom of the side of the compression part are each connected to a pressure sensor 4; one end of the pressure cover 1 corresponds to the opening, and the other end thereof is transmission-connected to the testing machine 8, and the testing machine 8 drives the pressure cover 1 to move relative to the compression part; wherein, the pressure sensor 4 is electrically connected to the stress and strain acquisition system 6; the stress and strain acquisition system 6 and the testing machine 8 are both electrically connected to the terminal processor 7.

[0032] Working method:

[0033] Put the sugarcane material into the compression part from the top opening, and then start the testing machine 8. The testing machine 8 drives the pressure cover 1 to move toward the compression part, and the pressure cover compresses the sugarcane material in the compression part. After the pressure cover 1 moves to the set stroke, it stays for 10 to 20 seconds. At this time, the sugarcane material in the compression part is compressed and deformed, and the lateral force generated by the pressure cover compressing the sugarcane material is transmitted to the pressure sensor 4. The pressure sensor 4 transmits the measured data information to the stress and strain acquisition system 6. The stress and strain acquisition system 6 analyzes and processes the received data information and transmits the data signal to the terminal processor; the terminal processor processes the received data signal to obtain the axial stress-strain curve and the lateral stress-time curve. Since this test is a fully limited pressure test, the lateral deformation of the sugarcane fiber is zero, and the slope of the axial stress-strain curve is the compression modulus E s , the axial and lateral stresses are σ z , σ x , v is Poisson's ratio, and according to the generalized Hooke's law, Young's modulus can be obtained According to the side pressure coefficient calculation formula Available

[0034] The axial strain generated by the sugarcane material compressed by the gland 1 is measured by a terminal processor connected to the testing machine.

[0035] It can be seen that when the sugarcane material is compressed, axial deformation will occur, and the stress-strain curve generated by the axial deformation can be obtained through the terminal processor connected to the testing machine.

[0036] Example 2:

[0037] Compared with embodiment 1, the difference lies in that a structural form of the compression part is provided.

[0038] The compression part includes a compression chamber 2 and a pressure transmission plate 3 ; the compression chamber 2 is provided with a top opening 21 and a side opening 22 ; the pressure transmission plate 3 is installed on the side opening 22 and connected to the pressure sensor 4 .

[0039] Example 3:

[0040] Compared with Example 2, the difference lies in that the structural shape of the compression chamber is given.

[0041] The compression chamber 2 is in the shape of a polyhedron or a cylinder.

[0042] Example 4:

[0043] Compared with Example 2 or 3, the difference lies in that a structural form for discharging cane juice from the compression chamber is given.

[0044] A plurality of through holes are provided on the side and bottom of the compression chamber 2. The through holes can facilitate the discharge of cane juice generated during the compression of the cane material, and at the same time, can reduce the fluid-structure coupling generated by the cane material and cane juice during the pressing process, making the measured mechanical properties of the cane material more accurate.

[0045] Example 5:

[0046] Compared with any one of Examples 2-4, the difference lies in that a structural form for discharging cane juice from the pressure transfer plate is given.

[0047] A plurality of through holes are provided in the pressure transfer plate 3. The through holes can facilitate the discharge of cane juice generated during the compression of the cane material, and at the same time, can reduce the fluid-structure coupling generated by the cane material and cane juice during the pressing process, making the measured mechanical properties of the cane material more accurate.

[0048] Example 6:

[0049] Compared with Example 4 or 5, the difference lies in that the set range of the diameter of the through hole is given.

[0050] The diameter of the through hole is φ1mm to 10mm. Commonly available diameters are φ1mm, φ2mm, φ3mm, φ4mm, φ5mm, φ6mm, φ7mm, φ8mm, φ9mm or φ10mm, etc.

[0051] Example 7:

[0052] Compared with any one of Examples 1-6, the difference lies in that in order to facilitate the collection of cane juice generated during the compression of the cane material, a cane juice collection container 5 is additionally installed.

[0053] The cane juice collection container 5 is provided with a receiving space, and the compression part is placed in the receiving space; the pressure sensor 4 is installed on the cane juice collection container.

[0054] A connection method among the pressure transfer plate 3, the pressure sensor 4 and the cane juice collection container 5:

[0055] One end of the pressure sensor 4 is connected to the pressure transmission plate 3 through a bolt, and the other end thereof is connected to the sugarcane juice collecting container 5 through a bolt.

[0056] Example 8:

[0057] Compared with any one of the embodiments 1-7, the difference is that: in order to facilitate the removal of the sugarcane material in the compression part after compression, a net bag is additionally installed. The net bag is movably suspended on the gland 1 and is used to contain the sugarcane material.

[0058] The sugarcane material is placed in a mesh bag, which is then movably placed on the pressure cover. The mesh bag is in a suspended state, the pressure cover moves downward, and the mesh bag falls into the compression part. The pressure cover compresses the sugarcane material that follows the mesh bag into the compression part. After the compression is completed, the testing machine drives the pressure cover upward to reset, and the pressure cover drives the mesh bag upward, and the mesh bag pulls the compressed sugarcane material toward and away from the compression part. This shows that the mesh bag can more conveniently clean out the squeezed sugarcane material in the compression part.

[0059] Example 9:

[0060] Compared with any one of Examples 1-8, the difference is that a structural form of the pressure cover is provided.

[0061] The pressure cover 1 includes a push-pull rod 11 and a pressure plate 12 ; one end of the push-pull rod 11 is connected to the pressure plate 12 , and the other end thereof is transmission-connected to the testing machine 8 .

[0062] The testing machine drives the push-pull rod 11 to move, and the push-pull rod 11 drives the pressing plate 12 to move. The pressing plate 12 is used to compress the sugarcane material in the compression part.

[0063] Example 10:

[0064] Compared with any one of Examples 1-9, the difference is that a structural form of the testing machine is provided.

[0065] The testing machine 8 is a universal testing machine.

[0066] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A determination structure for the elastoplastic parameters of sugarcane material, characterized in that: It includes a gland (1), a compression part, a pressure sensor (4), a stress and strain acquisition system (6), a terminal processor (7) and a testing machine (8); The compression part is placed at the bottom of the testing machine (8), and an opening is provided on the top thereof, and the top and bottom of the side of the compression part are each connected to a pressure sensor (4); One end of the pressure cover (1) corresponds to the opening, and the other end thereof is in transmission connection with a testing machine (8), and the testing machine (8) drives the pressure cover (1) to move relative to the compression part; Wherein, the pressure sensor (4) is electrically connected to the stress and strain acquisition system (6); The stress and strain acquisition system (6) and the testing machine (8) are both electrically connected to the terminal processor (7); The compression section includes a compression chamber (2) and a pressure transmission plate (3); the compression chamber (2) is provided with a top opening (21) and a side opening (22); the pressure transmission plate (3) is mounted on the side opening (22) and connected to a pressure sensor (4); The side and bottom of the compression chamber (2) are provided with a plurality of through holes; It also includes a sugarcane juice collecting container (5); the sugarcane juice collecting container (5) is provided with an accommodating space, and the compression part is placed in the accommodating space; the pressure sensor (4) is installed on the sugarcane juice collecting container (5); the pressure transmission plate (3) is suspended and installed on the sugarcane juice collecting container (5) through the pressure sensor (4), and the pressure transmission plate (3) is in a suspended state relative to the compression chamber (2).

2. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, characterized in that: The compression chamber (2) is in the form of a polyhedron or a cylinder.

3. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, characterized in that: The pressure transmission plate (3) is provided with a plurality of through holes.

4. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, wherein: The diameter of the through hole is φ1mm-10mm.

5. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, wherein: Also includes mesh bag; The mesh bag is movably suspended on the gland (1) and is used to contain sugarcane material.

6. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, characterized in that: The gland (1) comprises a push-pull rod (11) and a pressure plate (12); One end of the push-pull rod (11) is connected to the pressing plate (12), and the other end thereof is transmission-connected to the testing machine (8).

7. The measuring structure for the elastoplastic parameters of sugarcane materials according to claim 1, wherein: The testing machine (8) is a universal testing machine.

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