Needle breakage preventing device of standard solution preparation instrument
A technology of anti-breakage and calibration instrument, applied in the direction of measuring tube/pipette, etc., can solve the problems of high operator requirements, broken needle accidents, increased use costs, etc., achieve simple and reliable mechanical structure, provide safety in use, prevent damage effect
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Embodiment 1
[0024] Example 1, such as figure 1 and figure 2 As shown, the present invention provides an anti-broken needle device for a standard matching instrument, which includes a base 1, a fixed plate 4, a slider 3, a pipetting needle 9, a position detection device and a flexible positioning device. The moving parts of the standard instrument are connected, the fixed plate 4 is installed on the base 1, and a slideway for the slider 3 to slide up and down is provided between the fixed plate 4 and the base 1, and the slider 3 is installed in the slideway. The pipetting needle 9 is fixed on the lower part of the slider 3 and protrudes from the lower end of the slideway. The flexible positioning device is used to apply a lateral contact force to the slider 3 so that the position of the slider 3 is fixed in the slideway. The position detection device is used to detect whether the position of the slider 3 in the slideway deviates and sends a control signal to the control system of the cal...
Embodiment 2
[0031] Example 2, such as image 3 As shown, the other structures are the same as in Embodiment 1, and the assembly method of the position detection device is different from that in Embodiment 1. Specifically, the fixed plate 4 is provided with a first through hole 12 leading to the slideway transversely, and the laser Transmitter 5 is installed in the first through hole 12, and described slide block 3 is provided with the second through hole 13 coaxial with first through hole 12, and described photoelectric receiver 2 is installed on base 1 and second. The position corresponding to the through hole 13.
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