A quartz sand dry vibration material thermal expansion performance testing device

Abstract

The utility model relates to quartz sand dry material vibrating technical field discloses a kind of quartz sand dry material vibrating thermal expansion performance testing device, including test table, locating seat is installed on test table, support is arranged in test table both sides, the top end of support is connected with detection plate, detection plate is embedded with detection cover, and visual sensor is installed in the inner top wall of detection cover. The electric cylinder in lifting mechanism drives lifting slide to descend along supporting recess, can drive hexagonal pressure column to embed hexagonal pressure seat and exert pressure on transparent pressure plate, can simulate the compaction process in actual construction, ensure that the density of test sample, structure and engineering application scene are consistent, avoid the deviation of test data caused by sample state distortion due to traditional direct measurement, and after compaction is completed, hexagonal pressure column is driven to separate by electric cylinder contraction, and the design of deceleration motor drive overturning avoids the problem of detection area shielding, and is convenient for subsequent testing.

Description

Technical Field

[0001] This utility model relates to the field of quartz sand dry vibratory material technology, specifically a device for testing the thermal expansion performance of quartz sand dry vibratory material. Background Technology

[0002] Quartz sand dry vibratory material is an unshaped refractory material made of quartz sand particles as the main raw material, mixed with fused quartz sand particles and fine powder. It has the characteristics of high strength, good chemical stability and thermal shock resistance. It is widely used in furnace lining construction in high-temperature industries such as cast iron, glass manufacturing, and semiconductors. Its construction does not require the addition of water. It is sintered after being vibrated and compacted layer by layer. It can meet the needs of high-efficiency smelting equipment such as medium frequency furnaces. Key properties such as thermal expansion can be optimized by adjusting the raw material ratio.

[0003] Currently, the thermal expansion performance testing of dry vibratory quartz sand mainly adopts the direct measurement method using a thermal expansion meter. This method calculates parameters such as the coefficient of thermal expansion by recording the changes in length or volume of the material during programmed heating. However, existing testing techniques have shortcomings: firstly, the sample preparation does not simulate the actual compaction state during construction, resulting in significant deviations between the test results and actual usage scenarios; secondly, they lack information on the generation of micro-cracks and expansion structure of materials at high temperatures, making it difficult to fully reflect the impact of thermal expansion on the mechanical properties of the material. Therefore, we propose a testing device for the thermal expansion performance of dry vibratory quartz sand. Utility Model Content

[0004] The purpose of this invention is to provide a device for testing the thermal expansion performance of dry vibratory quartz sand, in order to solve the problems mentioned in the background art, such as the current sample preparation not simulating the actual compaction state during construction, the test results deviating significantly from the actual use scenario, the lack of data on the generation of micro-cracks and expansion structure of materials at high temperatures, and the difficulty in fully reflecting the impact of thermal expansion on the mechanical properties of materials.

[0005] This utility model provides the following technical solution: a test device for the thermal expansion performance of dry vibrating quartz sand, characterized in that it includes a test platform, a positioning seat is installed on the test platform, supports are provided on both sides of the test platform, a detection plate is connected to the top of the supports, a detection cover is embedded on the detection plate, and a visual sensor is installed on the inner top wall of the detection cover. The inner wall of the positioning seat is inlaid with an annular electric heating wire, and the inner ring of the annular electric heating wire is connected to an annular heat-conducting plate. The positioning seat is also equipped with a test cylinder, and a transparent pressure plate is installed inside the test cylinder. A hexagonal pressure seat is installed on the transparent pressure plate, and the inner ring of the annular heat-conducting plate abuts against the inner ring of the test cylinder. A lifting mechanism is also provided on one side of the test bench. A drive cover is provided at the top of the lifting mechanism. A geared motor is installed on the inner bottom wall of the drive cover. A rotating shaft is installed on the output end of the geared motor. A lifting support plate is installed at the top of the rotating shaft. A hexagonal pressure column that cooperates with the hexagonal pressure seat is provided on the bottom surface of the lifting support plate.

[0006] As a preferred technical solution, the lifting mechanism includes a support recess set on one side of the test bench, an electric cylinder installed on the inner bottom wall of the support recess, a lifting slider fixed at the telescopic end of the electric cylinder, and the upper surface of the lifting slider connected to the bottom surface of the drive cover.

[0007] As a preferred technical solution, a limiting hole is provided on one side of the supporting recess, a limiting block is slidably connected to the inner wall of the limiting hole, and one side of the limiting block is connected to one side of the lifting slider.

[0008] As a preferred technical solution, the bottom surface of the positioning seat and the upper surface of the test platform are provided with two temperature sensing holes. Temperature sensors are installed on the inner bottom walls of the temperature sensing holes, and the temperature sensors are located below the test cylinder.

[0009] As a preferred technical solution, the bottom surface of the test platform is provided with an exhaust hole, and a grid baffle is provided at the center of the bottom wall of the test cylinder, with the grid baffle located above the exhaust hole.

[0010] As a preferred technical solution, the outer wall of the hexagonal pressure post is adapted to the inner wall of the hexagonal pressure base, and the vision sensor is located directly above the hexagonal pressure base.

[0011] As a preferred technical solution, a reinforcing plate is provided on the side of the bracket that is close to each other, and the upper surface of the reinforcing plate is connected to the bottom surface of the detection plate.

[0012] As a preferred technical solution, the test stand is also equipped with a support plate, and a test host is provided on one side of the support plate. The surface of the test host is provided with a data display module and a parameter setting module.

[0013] This utility model has the following beneficial effects: I. This quartz sand dry vibratory material thermal expansion performance testing device uses an electric cylinder in the lifting mechanism to drive the lifting slider to descend along the support recess, which can drive the hexagonal pressure column to embed into the hexagonal pressure seat and apply pressure to the transparent pressure plate. It can simulate the compaction process in actual construction, ensuring that the density and structure of the test sample are consistent with the engineering application scenario. This avoids the test data deviation caused by the distortion of sample state in the traditional direct measurement method. At the same time, after compaction, the design of the electric cylinder retracting to drive the hexagonal pressure column to disengage and the geared motor driving the flipping avoids the problem of detection area obstruction and facilitates subsequent testing.

[0014] II. The thermal expansion performance testing device for dry vibratory quartz sand achieves uniform heating of the material through the combination of annular electric heating wire and annular heat-conducting plate. The visual sensor simultaneously captures the displacement change of the hexagonal pressure seat and the micro-crack state on the surface of the material through the detection cover, achieving the effect of monitoring the micro-structure changes of the material. It can reflect the potential impact of thermal expansion on the mechanical properties of the material and improve the testing effect of thermal expansion performance of dry vibratory quartz sand. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from the front; Figure 2 This is a frontal sectional view of the present invention; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a three-dimensional structural diagram of the lifting slider in this utility model, viewed from below. Figure 5 This is a three-dimensional structural diagram of the detection plate in this utility model, viewed from below.

[0016] In the diagram: 1. Test bench; 2. Positioning seat; 3. Test cylinder; 4. Transparent pressure plate; 5. Bracket; 6. Lifting support plate; 7. Hexagonal pressure column; 8. Detection plate; 9. Lifting mechanism; 91. Support recess; 92. Electric cylinder; 93. Lifting slider; 94. Limit block; 95. Limit hole; 10. Detection cover; 11. Vision sensor; 12. Hexagonal pressure seat; 13. Temperature sensing hole; 14. Temperature sensor; 15. Exhaust port; 16. Grid baffle; 17. Reinforcing plate; 18. Supporting upright plate; 19. Test host; 20. Drive cover; 21. Rotary shaft; 22. Gear motor; 23. Annular electric heating wire; 24. Annular heat conducting plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Example 1: Please refer to Figures 1-5A device for testing the thermal expansion properties of dry vibratory quartz sand includes a test platform 1. A positioning seat 2 is fixedly installed on the upper surface of the test platform 1. Two supports 5 are fixedly installed on the upper surface of the test platform 1. A detection plate 8 is fixedly connected to the top of the two supports 5. A detection cover 10 is fixedly embedded on the upper surface of the detection plate 8. A vision sensor 11 is fixedly installed on the inner top wall of the detection cover 10. The vision sensor 11 uses an industrial CMOS vision sensor, equipped with an 8mm fixed-focus lens and a ring-shaped fill light. It acquires images of the sample surface state in real time through a transparent pressure plate 4. An image algorithm chip is built in to perform grayscale processing and edge detection on the images, outputting defect feature data such as cracks and bulges on the sample surface. A ring-shaped electric heating wire 23 is fixedly embedded in the inner wall of the positioning seat 2. A ring-shaped heat-conducting plate 24 is fixedly connected to the inner ring of the ring-shaped electric heating wire 23. The test chamber 2 is equipped with a test cylinder 3, and the test cylinder 3 is equipped with a transparent pressure plate 4. The transparent pressure plate 4 is made of high-temperature resistant quartz glass with a light transmittance of ≥92%, a high temperature resistance of ≤1200℃, and a compressive strength of ≥80MPa. The surface is polished to meet the visual observation requirements and adapt to the high-temperature test environment of the sample, avoiding thermal deformation that affects the measurement accuracy. A hexagonal pressure seat 12 is fixedly connected to the upper surface of the transparent pressure plate 4. The inner ring of the annular heat-conducting plate 24 is in contact with the inner ring of the test cylinder 3. A lifting mechanism 9 is fixedly embedded on one side of the test platform 1. A drive cover 20 is set at the top of the lifting mechanism 9. A geared motor 22 is fixedly installed on the inner bottom wall of the drive cover 20. A rotating shaft 21 is fixedly installed at the output end of the geared motor 22. A lifting support plate 6 is fixedly installed at the top of the rotating shaft 21. A hexagonal pressure column 7 is fixedly installed on the bottom surface of the lifting support plate 6.

[0019] In this embodiment: the positioning seat 2, through the cooperation of the annular electric heating wire 23 and the annular heat-conducting plate 24, achieves uniform heating of the material in the test cylinder 3, meeting the temperature environment requirements of thermal expansion test. The visual sensor 11 accurately captures the displacement change of the transparent pressure plate 4 through the detection cover 10, providing direct data support for the calculation of thermal expansion. The lifting mechanism 9 drives the drive cover 20 to drive the lifting support plate 6 and the hexagonal pressure column 7 to move, and cooperates with the hexagonal pressure seat 12 to complete the compaction of the material, simulating the actual construction state and ensuring the authenticity of the test sample.

[0020] Example 2: This example is an improvement on Example 1. The lifting mechanism 9 includes a support recess 91 fixedly embedded in one side of the test platform 1. An electric cylinder 92 is fixedly installed on the inner bottom wall of the support recess 91. A lifting slider 93 is fixedly installed on the telescopic end of the electric cylinder 92. The upper surface of the lifting slider 93 is fixedly connected to the bottom surface of the drive cover 20. A limit hole 95 is opened on one side of the support recess 91. A limit block 94 is slidably connected to the inner wall of the limit hole 95. One side of the limit block 94 is fixedly connected to one side of the lifting slider 93.

[0021] In this embodiment: the support recess 91 provides installation positioning for the electric cylinder 92, and the electric cylinder 92 acts as a power source to drive the lifting slider 93 to rise and fall smoothly, ensuring the pressure stability during the compaction process. In addition, the limiting hole 95 and the limiting block 94 can form a sliding fit to limit the movement trajectory of the lifting slider 93 and prevent deviation during the compaction process.

[0022] Example 3: This example is an improvement on Example 1. The bottom surface of the positioning base 2 and the upper surface of the test platform 1 are provided with two temperature sensing holes 13. Temperature sensors 14 are fixedly installed on the inner bottom wall of both temperature sensing holes 13, and the temperature sensors 14 are located below the test cylinder 3. The bottom surface of the test platform 1 is provided with an exhaust hole 15. A grid baffle 16 is fixedly embedded in the inner bottom wall of the test cylinder 3, and the grid baffle 16 is located above the exhaust hole 15. The outer surface of the hexagonal pressure column 7 is adapted to the inner wall of the hexagonal pressure base 12. The vision sensor 11 is located directly above the hexagonal pressure base 12.

[0023] In this embodiment: the temperature sensor 14 inside the temperature sensing hole 13 monitors the temperature of the material inside the test cylinder 3 in real time, ensuring that the test environment meets the preset standards. The grid baffle 16 can block the material and allow the gas during heating to be discharged, preventing gas accumulation from affecting the expansion state of the material. The matching design of the hexagonal pressure column 7 and the hexagonal pressure seat 12 improves the compaction stability. The layout of the vision sensor 11 directly above ensures that there are no blind spots in displacement monitoring, and fully captures the thermal expansion and micro-crack changes.

[0024] Example 4: This example is an improvement on Example 1. Reinforcing plates 17 are fixedly connected to the sides of the two supports 5 that are close to each other. The upper surfaces of the two reinforcing plates 17 are fixedly connected to the bottom surface of the detection plate 8. A support plate 18 is fixedly installed on the upper surface of the test platform 1. A test host 19 is fixedly installed on one side of the support plate 18. The surface of the test host 19 is provided with a data display module and a parameter setting module. The test host 19 integrates a power module, a signal processing module and a communication module to realize automated control and data synchronization of the test process.

[0025] In this embodiment: the reinforcing plate 17 connects the bracket 5 and the detection plate 8, enhancing the load-bearing capacity of the detection plate 8; the supporting plate 18 provides a stable installation position for the test host 19; the parameter setting module of the test host 19 facilitates the operator to adjust test parameters such as heating rate and compaction pressure; the data display module presents key data such as temperature and expansion in real time, realizing visualization and automated control of the test process, improving test efficiency and ease of operation.

[0026] The working principle of this utility model is as follows: First, the quartz sand dry vibratory material to be tested is filled into the test cylinder 3. The electric cylinder 92 in the lifting mechanism 9 is started. The electric cylinder 92 drives the lifting slider 93 to descend along the support recess 91, which can drive the drive cover 20 and the bottom lifting support plate 6 and hexagonal pressure column 7 to press down synchronously. This allows the hexagonal pressure column 7 to be embedded in the hexagonal pressure seat 12 and apply pressure to the transparent pressure plate 4, simulating the compaction state in actual construction to complete the sample preparation. Then, the electric cylinder 92 retracts and drives the hexagonal pressure column 7 to rise and fall, detaching from the transparent pressure plate 4. The reduction motor 22 is started and drives the lifting support plate 6 and hexagonal pressure column 7 to flip through the rotating shaft 21 to avoid obstructing the test area.

[0027] Then, the annular electric heating wire 23 is activated, and the annular heat-conducting plate 24 uniformly heats the quartz sand dry vibrating material in the test cylinder 3. The temperature sensor 14 monitors the material temperature in real time through the temperature sensing hole 13 and feeds it back to the test host 19. The test host 19 adjusts the heating rate and target temperature through the parameter setting module. During the heating process, the gas generated by the material is filtered by the grid baffle 16 and discharged from the exhaust hole 15. The vision sensor 11 captures the displacement change of the hexagonal pressure seat 12 and the surface state of the material in real time through the detection cover 10, and simultaneously records the thermal expansion and microcrack generation. The test data is transmitted to the test host 19 in real time for analysis and processing, and finally the test results such as the thermal expansion coefficient and crack development law are generated.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A device for testing the thermal expansion properties of dry vibratory quartz sand, characterized in that, Includes a test bench (1), on which a positioning seat (2) is installed, and supports (5) are provided on both sides of the test bench (1). A detection plate (8) is connected to the top of the support (5), and a detection cover (10) is embedded on the detection plate (8). A visual sensor (11) is installed on the inner top wall of the detection cover (10). The inner wall of the positioning seat (2) is inlaid with an annular electric heating wire (23), and the inner ring of the annular electric heating wire (23) is connected to an annular heat-conducting plate (24). The positioning seat (2) is also provided with a test cylinder (3), and a transparent pressure plate (4) is provided inside the test cylinder (3). A hexagonal pressure seat (12) is installed on the transparent pressure plate (4), and the inner ring of the annular heat-conducting plate (24) abuts against the inner ring of the test cylinder (3). The test bench (1) is also provided with a lifting mechanism (9) on one side. The top of the lifting mechanism (9) is provided with a drive cover (20). The inner bottom wall of the drive cover (20) is provided with a reduction motor (22). The output end of the reduction motor (22) is provided with a rotating shaft (21). The top of the rotating shaft (21) is provided with a lifting support plate (6). The bottom surface of the lifting support plate (6) is provided with a hexagonal pressure column (7) that cooperates with the hexagonal pressure seat (12).

2. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, The lifting mechanism (9) includes a support recess (91) set on one side of the test bench (1). An electric cylinder (92) is installed on the inner bottom wall of the support recess (91). A lifting slider (93) is fixed at the telescopic end of the electric cylinder (92). The upper surface of the lifting slider (93) is connected to the bottom surface of the drive cover (20).

3. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 2, characterized in that, A limiting hole (95) is provided on one side of the supporting recess (91), and a limiting block (94) is slidably connected to the inner wall of the limiting hole (95). One side of the limiting block (94) is connected to one side of the lifting slider (93).

4. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, The bottom surface of the positioning seat (2) and the upper surface of the test platform (1) are provided with two temperature sensing holes (13). Temperature sensors (14) are installed on the inner bottom wall of the temperature sensing holes (13), and the temperature sensors (14) are located below the test cylinder (3).

5. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, The test bench (1) has an exhaust hole (15) on its bottom surface, and a grid baffle (16) is provided at the center of the bottom wall of the test cylinder (3), with the grid baffle (16) located above the exhaust hole (15).

6. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, The outer wall of the hexagonal pressure post (7) is adapted to the inner wall of the hexagonal pressure seat (12), and the visual sensor (11) is located directly above the hexagonal pressure seat (12).

7. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, A reinforcing plate (17) is provided on one side of each bracket (5) that is close to each other, and the upper surface of the reinforcing plate (17) is connected to the bottom surface of the detection plate (8).

8. The device for testing the thermal expansion properties of dry vibrating quartz sand according to claim 1, characterized in that, The test bench (1) is also equipped with a support plate (18), and a test host (19) is provided on one side of the support plate (18). The surface of the test host (19) is provided with a data display module and a parameter setting module.

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