Cement setting time testing device
By setting protective gaskets in the cement settling time test device, the problem of the initial coagulation test needle colliding against the glass bottom plate during the test process is solved, and the protection of the initial coagulation test needle is achieved and its service life is extended.
Patent Information
- Application Number
- CN202421347056.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-13
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-06-13
AI Technical Summary
In traditional mechanical cement settling time testing devices, the initial setting needle is prone to collision with the glass bottom plate and causing damage before the initial setting time is reached.
Protective gaskets are provided on the limit table, and the limit ring is set up by the protective gasket to prevent the initial condensation test needle from directly hitting the bottom plate. Protective gaskets made of metal are used to increase durability.
It effectively prevents bending, deforming or damage of the initial coagulation test needle during the test, and extends the service life of the initial coagulation test needle.
Smart Images
Figure CN223091760U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of testing, in particular to a device for testing the setting time of cement. Background Art
[0002] In the cement industry, the setting time of cement is one of the important parameters for evaluating the quality of cement. The setting time of cement is divided into the initial setting time and the final setting time. The initial setting time refers to the time required for cement to change from a flowing state to a plastic state after being mixed with water. It is a key factor to ensure that concrete can maintain sufficient fluidity and stability during construction. Therefore, accurately and quickly measuring the initial setting time of cement is of great significance for ensuring the construction quality of concrete and improving construction efficiency.
[0003] Currently, the following problems generally exist in traditional mechanical testing devices during the testing process: When the cement has not reached the initial setting time, during the process of the testing slide bar dropping for testing, the initial setting test needle is prone to collide with the glass bottom plate, resulting in bending and damage of the initial setting test needle. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a device for testing the setting time of cement, so as to solve the technical problem that during the testing of traditional mechanical testing devices, the initial setting test needle is prone to collide with the glass bottom plate, resulting in bending and damage of the initial setting test needle.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a device for testing the setting time of cement, the device for testing the setting time of cement includes:
[0006] A main body part, on which a limiting platform is provided, a sliding hole is vertically provided on the limiting platform, and a bottom plate is provided at the bottom of the main body part;
[0007] A testing slide bar, which is slidably matched in the sliding hole of the main body part, an initial setting test needle is installed at the bottom of the testing slide bar, and a limiting ring with a diameter larger than the diameter of the sliding hole is also provided on the testing slide bar;
[0008] A protection gasket, which is located at the top of the limiting platform. When the testing slide bar descends, the protection gasket pads up the limiting ring.
[0009] In one embodiment, the protection gasket is U-shaped.
[0010] In one embodiment, the thickness of the protection gasket is 0.3 mm.
[0011] In one embodiment, a screw is provided on the limiting platform, and the screw is used to lock and fix the testing slide bar.
[0012] In one embodiment, a pointer is provided on the test slide bar, and a dial is provided on the main body along the sliding direction of the test slide bar.
[0013] In one embodiment, the protective gasket is made of metal.
[0014] One or more of the above technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
[0015] A cement setting time testing device provided by an embodiment of the present invention, by providing a protective gasket on the limiting platform of the main body and padding up the limiting ring by the protective gasket when the test slide bar descends, avoids the initial setting test needle directly hitting the bottom floor during the test process, thereby effectively preventing the bending deformation or damage of the initial setting test needle and greatly prolonging the service life of the initial setting test needle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0017] Figure 1 It is a front view of the cement setting time testing device provided by an embodiment of the present invention;
[0018] Figure 2 It is a side view of the cement setting time testing device provided by an embodiment of the present invention.
[0019] Among them, the reference numerals of each part are as follows:
[0020] 1. Main body; 2. Test slide bar; 3. Protective gasket; 4. Screw; 11. Limiting platform; 12. Bottom plate; 13. Dial; 21. Initial setting test needle; 22. Limiting ring; 23. Pointer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.
[0022] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0023] In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.
[0024] In the present utility model, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0025] Please refer to Figures 1 to 2 , the embodiment of the present application provides a device for testing the setting time of cement, including a protection gasket 3, a test slide bar 2, and a main body 1. Among them, a limiting platform 11 is provided on the main body 1, a sliding hole is vertically provided on the limiting platform 11, and a bottom plate 12 is provided at the bottom of the main body 1; the test slide bar 2 is slidably fitted in the sliding hole of the main body 1, a primary setting test needle 21 is installed at the bottom of the test slide bar 2, and a limiting ring 22 with a diameter larger than the diameter of the sliding hole is also provided on the test slide bar 2; the protection gasket 3 is located on the top of the limiting platform 11, and when the test slide bar 2 descends, the protection gasket 3 pads up the limiting ring 22.
[0026] Specifically, a screw 4 is provided on the limiting platform 11, and the screw 4 is used to lock and fix the test slide bar 2. Before the test, the height of the test slide bar 2 and the primary setting test needle 21 can be fixed by tightening the screw 4. When the test needs to be carried out, just loosen the screw 4, and the test slide bar 2 and the primary setting test needle 21 can freely fall under the action of their own gravity for testing.
[0027] A pointer 23 is provided on the test slide bar 2, and a scale disk 13 is provided on the main body 1 along the sliding direction of the test slide bar 2. By observing the reading of the scale disk 13 corresponding to the pointer 23 provided on the test slide bar 2, the height of the initial setting test needle 21 can be accurately obtained, so as to accurately conduct the test.
[0028] In one embodiment, the protective gasket 3 is U-shaped. The U-shaped protective gasket 3 is convenient to install. During installation, only need to put the protective gasket 3 on the test slide bar 2 (there is a certain gap between the protective gasket 3 and the test slide bar 2).
[0029] In one embodiment, the thickness of the protective gasket 3 is 0.3 mm.
[0030] In one embodiment, the protective gasket 3 is made of metal. The protective gasket 3 made of metal is more durable.
[0031] When conducting the test, the specimen is cured in a humidity curing box for 30 min after adding water and then the first measurement is carried out. During the measurement, take the test mold out of the humidity curing box and place it under the test needle, lower the test needle to contact the surface of the cement paste. After tightening the screw for 41 s to 2 s, quickly loosen the screw 4, and the test needle sinks vertically and freely into the cement paste. Observe the reading of the pointer 23 when the test needle stops sinking or 30 s after releasing the test needle. Near the initial setting time, measure once every 5 min (or shorter time). When the test needle sinks to a distance of 124 mm ± 1 mm from the bottom plate, it is the initial setting state of the cement; the time from when all the cement is added to water to the initial setting state is the initial setting time of the cement. In the original instrument, during the process of measuring the initial setting time of cement, when the cement has not reached the initial setting time, the initial setting test needle 21 will collide with the glass bottom plate 12, making the initial setting test needle 21 bend.
[0032] In the test device of this embodiment, during the initial measurement and the process when the test needle sinks to a distance of 120.3 mm from the bottom plate, by installing the protective gasket 3, the initial setting test needle 21 is protected from damage.
[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A device for testing the setting time of cement, characterized in that, The cement setting time testing device includes: A main body part, on which a limiting platform is provided. A sliding hole is vertically provided on the limiting platform, and a bottom plate is provided at the bottom of the main body part; A testing sliding rod, which is slidably fitted in the sliding hole of the main body part. A initial setting test needle is installed at the bottom of the testing sliding rod, and a limiting ring with a diameter larger than the diameter of the sliding hole is also provided on the testing sliding rod; A protection gasket, which is located on the top of the limiting platform. When the testing sliding rod descends, the protection gasket pads up the limiting ring.
2. The cement setting time testing device according to claim 1, wherein: The protection gasket is U-shaped.
3. The cement setting time testing device according to claim 1, wherein: The thickness of the protection gasket is 0.3 mm.
4. The cement setting time testing device according to claim 1, wherein: A screw is provided on the limiting platform, and the screw is used to lock and fix the testing sliding rod.
5. The cement setting time testing device according to claim 1, wherein: A pointer is provided on the testing sliding rod, and a scale disk is provided on the main body part along the sliding direction of the testing sliding rod.
6. The cement setting time testing device according to claim 1, wherein: The protection gasket is made of metal material.