Full automatic Vicat apparatus
A vicat instrument, a fully automatic technology, applied in the direction of material inspection products, testing material hardness, etc., can solve the problems of incompatibility, inaccurate results, affecting the accuracy of measurement results, etc., and achieve the effect of automatic collection and simple operation.
Inactive Publication Date: 2010-06-30
CHONGQING UNIV
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Problems solved by technology
[0008] It can be seen from the test method of the manual Vicat instrument that this method is time-consuming and laborious. Each sample must be measured one by one. The operator needs to wait for several hours or more than ten hours to observe the arrival of the final setting time.
Moreover, due to the different proficiency and ability of the operators, it also affects the accuracy of the measurement results; and the use of foreign automatic Vicat instruments for testing, although the testing process is automated, the results obtained by scratches on the paper must be obtained manually. Judging the initial and final setting time, the final result is still inaccurate and not suitable for domestic standards
Thereby fully automatic and accurate measurement of the setting time of cement is still not a complete solution.
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[0039] See attached figure 2 , 3 , 5, the device in the figure comprises machine base 1, fuselage 6, head 7, turntable 12 and its displacement mechanism, power supply, needle wiping mechanism 11, heat preservation and moisturizing box 18, control system C, display and typing system, wherein The turntable shift mechanism is set on the machine base, the turntable is located in the heat preservation and moisturizing box, the test needle is always located above the turntable, and the needle wiping arm of the needle wiping mechanism is located on both sides of the test needle stroke; its feature is: installed in the machine head The test needle 10 and its lifting displacement sensing device, wherein the test needle is grounded; there is an electrical connection sampling terminal on the turntable, which is respectively connected to the given voltage terminal and the signal input terminal of the control system through a series resistor. Signals are collected when the mold 28, the c...
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Abstract
The invention discloses a new full-automatic maintainer, which comprises the following parts: stand1, engine body6, machine head7, rotary table12 with shift mechanism, power, needle-in mechanism 11, thermal insulation humidistat 18, control system C, display and typewriting system, wherein the earth connection needle 10 with lift and shift sensory mechanism is set in the machine head; the electronic connection sampling end connects signal pressure output end through control system and given pressure inlet end through paralleling resistances on the rotary table separately, which receives the signal when the electricity passes by the metal specimen mold, cement neat paste and needle.
Description
technical field [0001] The invention relates to a testing instrument for cement initial setting and final setting time. technical background [0002] Cement is one of the most important building materials in modern times. After adding water, cement is mixed into cement slurry, and the process of changing from a plastic state to a solid state with a certain strength is the coagulation of cement. The time at which plasticity begins to be lost is called initial setting time, and the time at which plasticity is completely lost is called final setting time. Setting time is an important physical property of cement. All countries have national standards for the initial setting time and final setting time of cement. Determination of coagulation time, the vast majority of countries in the world (including China) have adopted the "Vicat instrument method". The standard adopted in my country is GB / T 1346-2001 "Cement Standard Consistency Water Consumption, Setting Time, Stability Te...
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IPC IPC(8): G01N33/38G01N3/48
Inventor 李世六陈进黄艳玲陈浩方建忠
Owner CHONGQING UNIV