Sand equivalent test cylinder convenient to disassemble and clean

Abstract

The utility model relates to the technical field of test cylinders, in particular to a sand equivalent test cylinder convenient to disassemble and clean, which comprises a test cylinder main body, the upper end and the lower end of the test cylinder main body are respectively in threaded connection with a cylinder cap and a base through an upper external thread and a lower external thread arranged on the outer side wall of the test cylinder main body; the test cylinder main body consists of a left cylinder wall and a right cylinder wall which are mutually clamped to form a cylinder, and an elastic locking ring for constraining the left cylinder wall and the right cylinder wall is sleeved in the middle of the outer side wall of the test cylinder main body. According to the sand equivalent test cylinder convenient to disassemble and clean, through the left cylinder wall, the right cylinder wall and the elastic locking ring which are clamped with each other, the test cylinder can be disassembled after a test is finished, the inner side wall of the test cylinder is effectively cleaned, and the accuracy of next test data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of test tubes, in particular to a sand equivalent test tube which is easy to disassemble and clean. Background Art

[0002] Sand equivalent is to determine the content of clay or impurities contained in various fine aggregates such as natural sand, artificial sand, stone chips, etc., in order to assess the cleanliness of the aggregate. In the sand equivalent test, the fine aggregate and the flushing liquid need to be fully mixed in the test tube. After the test, a large number of stains that are difficult to clean are attached to the inner wall of the test tube.

[0003] The utility model patent with authorization announcement number CN215843048U discloses a sand equivalent test cylinder with a flushing hole at the bottom, including a test cylinder body, a flushing hole, a branch pipe, a flushing hole valve, a connecting component and an external flushing pipe. The test cylinder body is a hollow cylinder and a thickened layer is provided at the bottom. The flushing hole is arranged in the thickened layer to connect the inner bottom of the test cylinder body with the outside, the branch pipe is arranged outside the flushing hole and connected with the flushing hole, the flushing hole valve is arranged on the branch pipe, and the external flushing pipe is connected with the branch pipe.

[0004] Although this technical solution can save the trouble of inserting a flushing pipe during the flushing stage of the fine aggregate sand equivalent test, and by setting a bottom flushing hole, the flushing liquid can flush the fine aggregate from bottom to top, making the flushing process more sufficient and effective, ensuring the accuracy of the test data; however, the test tube under this technical solution is difficult to clean after the test, and the stains remaining on the inner wall of the test tube will seriously affect the accuracy of the next test data. In view of this, we propose a sand equivalent test tube that is easy to disassemble and clean. Utility Model Content

[0005] In view of the above-mentioned defects or shortcomings in the prior art, it is desired to provide a sand equivalent test tube that is easy to disassemble and clean.

[0006] In the first aspect, the present application provides a sand equivalent test tube that is easy to disassemble and clean, including a test tube body, wherein the upper and lower ends of the test tube body are respectively threadedly connected to a tube cap and a base through an upper external thread and a lower external thread provided on its outer wall, and the test tube body is composed of two left and right tube walls that are clamped together to form a cylindrical shape, and an elastic locking ring for binding the left and right tube walls is sleeved in the middle of the outer wall of the test tube body.

[0007] According to the technical solution provided in the embodiment of the present application, scale lines are provided on the outer surface of the right cylinder wall, and limiting rings are provided at the upper and lower ends of the elastic locking ring in the middle of the outer side wall of the test cylinder body.

[0008] According to the technical solution provided in the embodiment of the present application, the thickness of the limiting ring is greater than or equal to the thickness of the elastic locking ring, and when the elastic locking ring is sleeved on the outer side wall of the test tube body, the elastic locking ring is in a tight state.

[0009] According to the technical solution provided in the embodiment of the present application, the cross-sections of the engaging surfaces of the left cylinder wall and the right cylinder wall are respectively adapted concave and convex shapes, and a sealing gasket for improving the sealing is provided between the engaging surfaces of the left cylinder wall and the right cylinder wall, and the upper external thread, the lower external thread and the limiting ring are divided into two halves and are integrally formed on the corresponding outer side walls of the left cylinder wall and the right cylinder wall.

[0010] According to the technical solution provided in the embodiment of the present application, a lower internal thread matched with the lower external thread is provided in the base, a fixed protrusion with an outer diameter equal to the inner diameter of the test tube body is provided in the middle of the base, and a sealing ring is provided between the outer bottom end of the fixed protrusion and the bottom end of the lower internal thread.

[0011] According to the technical solution provided in the embodiment of the present application, a seat plate is integrally formed at the bottom end of the base, and the outer diameter of the seat plate is larger than the outer diameter of the test tube body.

[0012] According to the technical solution provided in the embodiment of the present application, an upper internal thread matched with the upper external thread is provided in the tube cap, a gasket is provided between the top of the upper internal thread and the top of the test tube body, and a plurality of anti-slip bumps are regularly and integrally formed on the outer wall of the tube cap.

[0013] To summarize, the present technical solution specifically discloses a sand equivalent test tube which is easy to disassemble and clean, comprising a test tube body, wherein the upper and lower ends of the test tube body are respectively threadedly connected with a tube cap and a base through an upper external thread and a lower external thread provided on its outer wall, and the test tube body is composed of two left and right tube walls which are mutually clamped into a cylindrical shape, and an elastic locking ring for binding the left and right tube walls is sleeved on the middle part of the outer wall of the test tube body; through the mutually clamped left and right tube walls and the elastic locking ring, the test tube can be disassembled after the test, and the inner wall of the test tube can be effectively cleaned, thereby improving the accuracy of the next test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the overall structure in the utility model;

[0017] Figure 3 It is an exploded view of the structure in the utility model;

[0018] Figure 4 It is an exploded view of the main structure of the test tube in the utility model;

[0019] Figure 5 It is a cross-sectional view of the main structure of the test tube in the utility model;

[0020] Figure 6 It is an exploded view of the base structure in the utility model;

[0021] Figure 7 It is a cross-sectional view of the base structure in the utility model;

[0022] Figure 8 It is an exploded view of the cylinder cap structure in the utility model;

[0023] Fig. 9 It is a cross-sectional view of the barrel cap structure in the utility model.

[0024] In the figure:

[0025] 1. Test tube body; 11. Left tube wall; 12. Right tube wall; 13. Scale line; 14. Upper external thread; 15. Limiting ring; 16. Lower external thread; 17. Sealing gasket; 18. Elastic locking ring;

[0026] 2. Base; 21. Lower internal thread; 22. Fixed protrusion; 23. Sealing ring; 24. Seat plate;

[0027] 3. Tube cap; 31. Anti-skid bump; 32. Upper internal thread; 33. Gasket. DETAILED DESCRIPTION

[0028] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.

[0029] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] See also Figure 1-Figure 9A sand equivalent test tube which is easy to disassemble and clean comprises a test tube body 1. The upper and lower ends of the test tube body 1 are respectively threadedly connected with a tube cap 3 and a base 2 through an upper external thread 14 and a lower external thread 16 provided on its outer wall. The test tube body 1 consists of two pieces of a left tube wall 11 and a right tube wall 12 which are clamped together to form a cylindrical shape. An elastic locking ring 18 for binding the left tube wall 11 and the right tube wall 12 is sleeved in the middle of the outer wall of the test tube body 1.

[0031] In this embodiment, a scale line 13 is provided on the outer surface of the right cylinder wall 12, and a limit ring 15 is provided at the upper and lower ends of the elastic locking ring 18 in the middle of the outer wall of the test cylinder body 1; the limit ring 15 can prevent the elastic locking ring 18 from slipping off the test cylinder body 1.

[0032] Furthermore, the thickness of the limit ring 15 is greater than or equal to the thickness of the elastic locking ring 18. When the elastic locking ring 18 is sleeved on the outer wall of the test tube body 1, the elastic locking ring 18 is in a tight state; the tight state ensures that the elastic locking ring 18 restrains the test tube body 1, so that the left tube wall 11 and the right tube wall 12 fit tightly.

[0033] Secondly, the cross-sections of the engaging surfaces of the left cylinder wall 11 and the right cylinder wall 12 are respectively in matching concave and convex shapes, and a sealing gasket 17 for improving the sealing performance is provided between the engaging surfaces of the left cylinder wall 11 and the right cylinder wall 12. The upper external thread 14, the lower external thread 16 and the limit ring 15 are divided into two halves and are integrally formed on the corresponding outer side walls of the left cylinder wall 11 and the right cylinder wall 12; the concave and convex design facilitates the engagement between the left cylinder wall 11 and the right cylinder wall 12, and the sealing gasket 17 increases the sealing effect of the test cylinder body 1.

[0034] Furthermore, a lower internal thread 21 matched with the lower external thread 16 is provided in the base 2, a fixed protrusion 22 with an outer diameter equal to the inner diameter of the test tube body 1 is provided in the middle of the base 2, and a sealing ring 23 is provided between the outer bottom end of the fixed protrusion 22 and the bottom end of the lower internal thread 21; the fixed protrusion 22 can limit the test tube body 1, and the sealing ring 23 increases the sealing between the base 2 and the test tube body 1.

[0035] Secondly, a seat plate 24 is integrally formed at the bottom end of the base 2, and the outer diameter of the seat plate 24 is larger than the outer diameter of the test tube body 1; the seat plate 24 allows the test tube to be stably placed on the test bench, thereby increasing stability.

[0036] Furthermore, an upper internal thread 32 matched with the upper external thread 14 is provided in the tube cap 3, a gasket 33 is provided between the top of the upper internal thread 32 and the top of the test tube body 1, and a plurality of anti-skid protrusions 31 are regularly and integrally formed on the outer wall of the tube cap 3; the gasket 33 increases the sealing between the tube cap 3 and the test tube body 1, and the anti-skid protrusions 31 facilitate the rotation of the tube cap 3.

[0037] Working principle: When using the sand equivalent test tube of the utility model which is easy to disassemble and clean, the user first engages the left tube wall 11 and the right tube wall 12, then sleeves the elastic locking ring 18 on the outer wall of the test tube body 1 after engagement, and then rotates the test tube body 1 to make it threadedly connected to the base 2, injects fine aggregate and flushing liquid into the test tube, and finally rotates the tube cap 3 to make it threadedly connected to the top of the test tube body 1. After the test is completed, rotate the tube cap 3 and the base 2 in turn to make them fall off from the test tube body 1, remove the elastic locking ring 18, separate the left tube wall 11 and the right tube wall 12, and the disassembly is completed, and the inner wall of the test tube can be cleaned.

[0038] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A sand equivalent test tube that is easy to disassemble and clean, comprising a test tube body (1), characterized in that: The upper and lower ends of the test tube body (1) are respectively threadedly connected to a tube cap (3) and a base (2) through an upper external thread (14) and a lower external thread (16) provided on the outer wall thereof; the test tube body (1) is composed of a left tube wall (11) and a right tube wall (12) which are mutually clamped into a cylindrical shape; and an elastic locking ring (18) for binding the left tube wall (11) and the right tube wall (12) is sleeved in the middle of the outer wall of the test tube body (1).

2. The sand equivalent test tube that is easy to disassemble and clean according to claim 1 is characterized in that: A scale mark (13) is provided on the outer surface of the right cylinder wall (12), and a limit ring (15) is provided at the upper and lower ends of the elastic locking ring (18) in the middle of the outer wall of the test cylinder body (1).

3. The sand equivalent test tube that is easy to disassemble and clean according to claim 2 is characterized in that: The thickness of the limiting ring (15) is greater than or equal to the thickness of the elastic locking ring (18); when the elastic locking ring (18) is sleeved on the outer wall of the test tube body (1), the elastic locking ring (18) is in a tensioned state.

4. The sand equivalent test tube that is easy to disassemble and clean according to claim 2 is characterized in that: The cross-sections of the engaging surfaces of the left cylinder wall (11) and the right cylinder wall (12) are respectively in matching concave and convex shapes, and a sealing gasket (17) for improving the sealing performance is provided between the engaging surfaces of the left cylinder wall (11) and the right cylinder wall (12), and the upper external thread (14), the lower external thread (16) and the limit ring (15) are divided into two halves and are integrally formed on the corresponding outer side walls of the left cylinder wall (11) and the right cylinder wall (12).

5. The sand equivalent test tube that is easy to disassemble and clean according to claim 1 is characterized in that: The base (2) is provided with a lower internal thread (21) matched with the lower external thread (16), the middle of the base (2) is provided with a fixed protrusion (22) with an outer diameter equal to the inner diameter of the test tube body (1), and a sealing ring (23) is provided between the outer bottom end of the fixed protrusion (22) and the bottom end of the lower internal thread (21).

6. The sand equivalent test tube that is easy to disassemble and clean according to claim 1 is characterized in that: A seat plate (24) is integrally formed at the bottom end of the base (2), and the outer diameter of the seat plate (24) is greater than the outer diameter of the test tube body (1).

7. The sand equivalent test tube that is easy to disassemble and clean according to claim 1 is characterized in that: An upper internal thread (32) matching the upper external thread (14) is provided inside the tube cap (3), a gasket (33) is provided between the top of the upper internal thread (32) and the top of the test tube body (1), and a plurality of anti-slip bumps (31) are regularly and integrally formed on the outer wall of the tube cap (3).

Images