Device for testing permeability of composite material

Abstract

The utility model relates to the technical field of permeability testing, and discloses a composite material permeability testing device which comprises a testing device main body, a connecting ring is fixedly connected to the upper surface of the testing device main body, and a clamping assembly is arranged on the upper surface of the connecting ring; the clamping assembly comprises a first shell, the lower surface of the first shell is fixedly connected to the upper surface of the connecting ring, a second guide plate is rotationally connected into the first shell, a pull rod is fixedly connected to the outer wall of the second guide plate, a connecting rod is slidably connected into a groove of the second guide plate, and a first extrusion block is fixedly connected to the upper surface of the connecting rod. The outer wall of the first extrusion block is slidably connected with a first guide plate. According to the test piece fixing device, the second guide plate can rotate through the pull handle, the first extrusion block can extrude a test piece to fix the test piece above the water storage tank through rotation of the second guide plate, and through the fixing mode, the test pieces of different sizes can be fixed through extrusion of the first extrusion block.

Description

Technical Field

[0001] This utility model relates to the field of permeability testing technology, and in particular to a device for testing the permeability of composite materials. Background Technology

[0002] Concrete is an artificial stone material made by mixing cementitious materials, aggregates, water, and admixtures in a certain proportion. A permeability testing device is required before using concrete for the following reasons: First, to assess the durability of the concrete, which is its ability to resist various destructive forces during long-term use, and permeability is directly related to durability; second, to ensure project quality, as the use of a permeability testing device is a crucial step in quality control during concrete production and construction.

[0003] A composite material permeability testing device typically includes a fixing component, a frame component, a pressure component, and a gas supply component. The fixing component secures the specimen by bolting it to a connecting ring, facilitating subsequent testing of its permeability. The gas supply component uses a conveying sleeve with a larger inner diameter to enclose the air inlet, thus supplying gas.

[0004] Existing composite material permeability testing devices use bolts to fix the specimen above the connecting ring. This fixing method requires that the size of the specimen and the size of the connecting ring be consistent during the fixing process. When encountering smaller specimens, the bolt fixing alone may not be able to accurately install the specimen in the test area, resulting in specimen shaking during the test, inaccurate test results, and reduced work efficiency. Therefore, a composite material permeability testing device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a composite material permeability testing device, which aims to improve the problem that the existing structure is relatively simple and cannot achieve a firm fixation when the specimen is small, resulting in reduced work efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite material permeability testing device, comprising a testing device body, a connecting ring fixedly connected to the upper surface of the testing device body, a clamping component provided on the upper surface of the connecting ring, a water storage tank opened on the upper surface of the testing device body, a test specimen provided on the upper surface of the water storage tank, a protective cover fixedly connected to the upper surface of the test specimen, and a portable component provided on the upper surface of the protective cover, the portable component being used for convenient transportation;

[0007] The clamping assembly includes a housing, the lower surface of which is fixedly connected to the upper surface of the connecting ring. A guide plate is rotatably connected inside the housing. A pull rod is fixedly connected to the outer wall of the guide plate. A connecting rod is slidably connected in the groove of the guide plate. An extrusion block is fixedly connected to the upper surface of the connecting rod. A guide plate is slidably connected to the outer wall of the extrusion block. One end of the extrusion block is slidably connected to the outer wall of the specimen.

[0008] Furthermore, the portable component includes a handle, both ends of which are fixedly connected to the upper surface of the protective cover. A screw is provided inside the protective cover, and the lower side of the outer wall of the screw is threaded into the interior of the specimen.

[0009] Furthermore, a second outer shell is fixedly connected inside the protective cover, an elastic plate is fixedly connected inside the second outer shell, a second pressing block is slidably connected to the outer wall of the elastic plate, and the outer wall of the second pressing block is threadedly connected to the inner wall of the second outer shell.

[0010] Furthermore, an air inlet is provided inside the outer casing, and a conveying sleeve is slidably connected to the outer wall of the air inlet, and the outer wall of the air inlet is disposed on the inner wall of the elastic plate.

[0011] Furthermore, a sealing gasket is fixedly connected to the upper surface of the main body of the testing device, and the outer wall of the sealing gasket is fixedly connected to the inner wall of the connecting ring.

[0012] Furthermore, the lower surface of the specimen is disposed on the upper surface of the sealing gasket, and the outer wall of the sealing gasket is fixedly connected to the perimeter of the water storage tank.

[0013] Furthermore, an adjuster is rotatably connected to the outer wall of the main body of the testing device, and a control panel is fixedly connected to the outer wall of the main body of the testing device.

[0014] Furthermore, a protective door is provided on the outer wall of the main body of the testing device.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the guide plate two can be rotated by pulling the handle. The rotation of the guide plate two can cause the extrusion block one to extrude and fix the specimen above the water storage tank. In this fixing method, the extrusion of the extrusion block one can fix specimens of different sizes, thereby reducing the error caused by the deviation of the specimen and improving work efficiency.

[0017] 2. In this utility model, the air inlet and the conveying sleeve are first connected together. After the connection is completed, the compression block 2 is twisted to move it downward. The movement of the compression block 2 can cause the expansion sleeve to contract inward, thereby strengthening the connection between the conveying sleeve and the air inlet and preventing the conveying sleeve from falling off due to the compression of gas, which would affect the working process. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the composite material permeability testing device proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the regulator part of the composite material permeability testing device proposed in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the two parts of the guide plate of the composite material permeability testing device proposed in this utility model;

[0022] Figure 5 for Figure 2 Enlarged view of section B in the middle.

[0023] Legend:

[0024] 1. Main body of the testing device; 2. Control panel; 3. Regulator; 4. Specimen; 5. Guide plate one; 6. Pull rod; 7. Protective door; 8. Handle; 9. Outer shell one; 10. Water tank; 11. Sealing gasket; 12. Connecting ring; 13. Guide plate two; 14. Extrusion block one; 15. Connecting rod; 16. Screw; 17. Protective cover; 18. Extrusion block two; 19. Conveying sleeve; 20. Air inlet; 21. Outer shell two; 22. Elastic plate. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 - Figure 4This utility model provides an embodiment of a composite material permeability testing device, comprising a testing device body 1, a connecting ring 12 fixedly connected to the upper surface of the testing device body 1, which facilitates the subsequent installation of clamping components; a clamping component is provided on the upper surface of the connecting ring 12; a water storage tank 10 is formed on the upper surface of the testing device body 1, which creates conditions for liquid permeability testing of a specimen 4; a specimen 4 is placed on the upper surface of the water storage tank 10, which facilitates testing of the specimen 4; and a protective cover 17 is fixedly connected to the upper surface of the specimen 4, which prevents gas leakage from affecting the testing of the specimen 4. The upper surface of the cover 17 is provided with a portable component for convenient transportation; the clamping component includes a housing 9, the lower surface of which is fixedly connected to the upper surface of the connecting ring 12. Installing the housing 9 onto the upper surface of the connecting ring 12 facilitates subsequent clamping and fixing of the test specimens 4. A guide plate 13 is rotatably connected inside the housing 9, creating conditions for fixing the test specimens 4. A pull rod 6 is fixedly connected to the outer wall of the guide plate 13, allowing for easy rotation of the guide plate 13. A connecting rod 15 is slidably connected within the groove of the guide plate 13, enabling inward movement of the connecting rod 15. An extrusion rod is fixedly connected to the upper surface of the connecting rod 15. The compression block 14, installed above the connecting rod 15, facilitates clamping and fixing of the specimen 4. A guide plate 5 is slidably connected to the outer wall of the compression block 14, guiding its movement. One end of the compression block 14 is fixedly connected to the outer wall of the specimen 4. The portable component includes a handle 8, both ends of which are fixedly connected to the upper surface of the protective cover 17, facilitating the handling of the specimen 4. A screw 16 is installed inside the protective cover 17, its outer wall threaded into the specimen 4, fixing the protective cover 17 to the upper surface of the specimen 4. The upper surface of the main body 1 of the testing device is fixedly connected to... A sealing gasket 11 is fixedly connected to the inner wall of the connecting ring 12. By installing the sealing gasket 11 inside the connecting ring 12, liquid in the water storage tank 10 can be prevented from seeping in, thus preventing the seepage process from proceeding normally. The lower surface of the specimen 4 is set on the upper surface of the sealing gasket 11. The outer wall of the sealing gasket 11 is fixedly connected to the periphery of the water storage tank 10. By installing the sealing gasket 11 close to the water storage tank 10, water inside the water storage tank 10 can be prevented from spreading to the surrounding area. A regulator 3 is rotatably connected to the outer wall of the main body 1 of the testing device. The air pressure inside the water storage tank 10 can be controlled by the regulator 3. A control panel 2 is fixedly connected to the outer wall of the main body 1 of the testing device. The entire testing device can be controlled by the control panel 2.The outer wall of the main body 1 of the testing device is equipped with a protective door 7, which facilitates the maintenance of internal parts.

[0027] Reference Figure 1 , Figure 2 and Figure 5 The protective cover 17 has an outer shell 21 fixedly connected inside. By fixing the outer shell 21 inside the protective cover 17, gas can be easily delivered to the specimen 4. An elastic plate 22 is fixedly connected inside the outer shell 21. A compression block 18 is slidably connected to the outer wall of the elastic plate 22. The outer wall of the compression block 18 is threaded to the inner wall of the outer shell 21. By twisting the compression block 18, it can be moved into the inner wall of the outer shell 21. The protruding shape designed below the compression block 18 can make the elastic plate 22 squeeze inward. An air inlet 20 is opened inside the outer shell 21. A conveying sleeve 19 is slidably connected to the outer wall of the air inlet 20. The outer wall of the air inlet 20 is set on the inner wall of the elastic plate 22. By installing the conveying sleeve 19 on the outer wall of the air inlet 20, the conveying sleeve 19 can be initially fixed. The compression of the elastic plate 22 can fix the connection between the conveying sleeve 19 and the air inlet 20.

[0028] Working principle: When the composite material permeability testing device is needed, the operator first pulls the pull rod 6. Since the pull rod 6 is fixedly connected to the outer wall of the guide plate 13, pulling the pull rod 6 will cause the guide plate 13 to rotate inside the outer shell 9. The connecting rod 15 is slidably connected in the groove of the guide plate 13. During the rotation of the guide plate 13, because the groove of the guide plate 13 is bent from the outside to the inside, it pushes the connecting rod 15 to move in the groove. The extrusion block 1 is fixedly connected to the upper surface of the connecting rod 15. 14 also moves inwards. The outer wall of the extrusion block 14 is slidably connected to the guide plate 5. The guide plate 5 provides guidance for the movement of the extrusion block 14, ensuring that the extrusion block 14 extrudes inwards. One end of the extrusion block 14 slides on the outer wall of the specimen 4. When the extrusion block 14 moves inwards, it applies extrusion force to the specimen 4, thereby fixing the specimen 4. This method of extrusion fixing can adapt to specimens 4 of different sizes because the extrusion block 14 can automatically adjust the extrusion position according to the size of the specimen 4. The force and strength effectively reduce the problems of insecure fixation or displacement caused by changes in the size of the specimen 4, thereby improving the accuracy of the test results. In terms of air intake, the air inlet 20 and the conveying sleeve 19 are connected together first. This is the initial channel for gas to enter the interior of the specimen 4. After the connection is completed, the compression block 2 18 is screwed. Since the outer wall of the compression block 2 18 is threaded to the inner wall of the outer shell 21, the compression block 2 18 will move downward under the action of the thread. The compression block 2 18 has a protruding shape at the bottom. When it moves downward, it will squeeze the elastic plate 22, causing the elastic plate 22 to deform inward. The compression block 2 18 is slidably connected to the outer wall of the elastic plate 22. The deformation of the elastic plate 22 will drive its inner wall to squeeze the conveying sleeve 19, thereby strengthening the connection between the conveying sleeve 19 and the air inlet 20. This can prevent the conveying sleeve 19 from falling off the air inlet 20 due to the gas pressure during the test, ensuring that the gas can be stably delivered to the interior of the specimen 4 and ensuring the normal progress of the test. After the preparation is completed, the test operation is carried out through the control panel 2.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite material permeability testing device, comprising a main body of the testing device (1), characterized in that: A connecting ring (12) is fixedly connected to the upper surface of the main body (1) of the test device. A clamping component is provided on the upper surface of the connecting ring (12). A water storage tank (10) is opened on the upper surface of the main body (1) of the test device. A test piece (4) is provided on the upper surface of the water storage tank (10). A protective cover (17) is fixedly connected to the upper surface of the test piece (4). A portable component is provided on the upper surface of the protective cover (17). The portable component is used for convenient transportation. The clamping assembly includes a housing (9), the lower surface of which is fixedly connected to the upper surface of the connecting ring (12). A guide plate (13) is rotatably connected inside the housing (9). A pull rod (6) is fixedly connected to the outer wall of the guide plate (13). A connecting rod (15) is slidably connected in the groove of the guide plate (13). An extrusion block (14) is fixedly connected to the upper surface of the connecting rod (15). A guide plate (5) is slidably connected to the outer wall of the extrusion block (14). One end of the extrusion block (14) is slidably connected to the outer wall of the specimen (4).

2. The composite material permeability testing device according to claim 1, characterized in that: The portable component includes a handle (8), both ends of which are fixedly connected to the upper surface of the protective cover (17). A screw (16) is provided inside the protective cover (17), and the outer wall of the screw (16) is threadedly connected to the inside of the specimen (4).

3. The composite material permeability testing device according to claim 1, characterized in that: The protective cover (17) is fixedly connected to the outer shell (21), and the outer shell (21) is fixedly connected to the elastic plate (22). The outer wall of the elastic plate (22) is slidably connected to the compression block (18), and the outer wall of the compression block (18) is threadedly connected to the inner wall of the outer shell (21).

4. The composite material permeability testing device according to claim 3, characterized in that: An air inlet (20) is provided inside the outer shell (21). A conveying sleeve (19) is slidably connected to the outer wall of the air inlet (20). The outer wall of the air inlet (20) is provided on the inner wall of the elastic plate (22).

5. The composite material permeability testing device according to claim 1, characterized in that: A sealing gasket (11) is fixedly connected to the upper surface of the main body (1) of the test device, and the outer wall of the sealing gasket (11) is fixedly connected to the inner wall of the connecting ring (12).

6. The composite material permeability testing device according to claim 5, characterized in that: The lower surface of the specimen (4) is disposed on the upper surface of the sealing gasket (11), and the outer wall of the sealing gasket (11) is fixedly connected to the water storage tank (10) around its perimeter.

7. The composite material permeability testing device according to claim 1, characterized in that: An adjuster (3) is rotatably connected to the outer wall of the main body (1) of the test device, and a control panel (2) is fixedly connected to the outer wall of the main body (1) of the test device.

8. The composite material permeability testing device according to claim 1, characterized in that: The outer wall of the main body (1) of the test device is provided with a protective door (7).

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