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Automated constant volume device of volumetric flask

A volumetric flask, automatic technology, applied in measuring devices, test/calibration devices, liquid/fluid solid measurement, etc., can solve problems such as increased experiment time and constant volume failure

Inactive Publication Date: 2015-05-27
XIAN SHUZHENG ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problem of increasing the experimental time due to the failure of constant volume caused by human misoperation of the volumetric flask

Method used

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  • Automated constant volume device of volumetric flask

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] This embodiment provides a figure 1 The volumetric bottle automatic constant volume device shown includes: dripper 1, infusion catheter 2, solenoid valve 3, hollow support rod 4, burette clip 5, photosensitive sensor module 6, light source module 7, iron clip 8, base 9, miniature Water pump 10, controller 11, button 12, LED indicator light 13, buzzer 14, solenoid valve 3, photosensitive sensor module 6, light source module 7, micro water pump 10, button 12, LED indicator light 13 and buzzer 14 all Connected to the controller 11.

[0016] The present invention utilizes micro water pump 10 and electromagnetic valve 3 to control liquid injection and adopts photosensitive sensor module 6 to detect liquid level. When the liquid level in the volumetric flask reaches the position where the photosensitive sensor module 6 is located, the light intensity of the light source module 7 received by the photosensitive sensor module 6 is weakened, thereby detecting the solution height...

Embodiment 2

[0018] In this embodiment, the dripper 1, the solenoid valve 3 and the micro-water pump 10 are connected successively through the infusion conduit 2. As an optimization, the infusion conduit 2 connecting the solenoid valve 3 and the micro-water pump 10 is placed inside the hollow support rod 4 in this embodiment. While saving space, it avoids the cumbersome arrangement of the infusion catheter 2, prevents accidents such as the volumetric flask falling due to the interference of the infusion catheter 2, and ensures the safety of the experiment.

Embodiment 3

[0020] On the basis of Embodiment 1, the photosensitive sensor module 6 of this embodiment includes: A photosensitive sensor 601, B photosensitive sensor 602, A slit 603, B slit 604, and the light source module 7 includes: A light source 701, B light source 702 , C slit 703, D slit 704, and the distance between A photosensitive sensor 601 and B photosensitive sensor 602 is 2 cm.

[0021] The present invention adopts the idea of ​​subsection control. Before the B photosensitive sensor 602 detects the liquid level, the solenoid valve 3 is fully opened, and the micro water pump 10 works at a relatively fast speed to realize rapid liquid injection; after the B photosensitive sensor 602 detects the liquid level, the micro The water pump 10 immediately works at a relatively slow speed, and at the same time, the electromagnetic valve 3 performs pulsed opening and closing to realize pulsed infusion of liquid, until finally the A photosensitive sensor 601 detects the liquid level to rea...

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Abstract

The invention belongs to the field of chemical laboratory instruments, automated volumetric flask. The device comprises emitter, infusion catheters, solenoid valves, hollow rod, burette clamp, light sensor module, light source module, iron clamp, base, miniature pumps, controllers , button, LED indicator light, buzzer, solenoid valves, light sensor module, light source module, miniature pumps, button, LED light and buzzer are connected to the controller. Simply adjust the titration flask scale line to be in A and A light plane of light sensors, you can automatically set the volume. Advantages Thus, one flask automatic volume device failed to solve the constant volume, so that the problem of experimental time increases caused by human error flask, with a convenient, time-saving, wide application of.

Description

technical field [0001] The invention belongs to the field of chemical experiment instruments and relates to an automatic volume constant device for volumetric bottles. Background technique [0002] The volumetric flask is a precise instrument for accurately preparing the concentration solution of a certain substance. It is a slender neck and pear-shaped bottom glass bottle with a ground glass stopper. There is a scale on the neck of the volumetric flask. When the volume in the bottle reaches the scale at the specified temperature, its volume is the indicated volume. Volumetric flasks are mainly used to prepare standard solutions and accurate dilution solutions and prepare sample solutions by direct method. [0003] When the volumetric flask is constant, first add solvent to the volumetric flask until it is 1~2 cm away from the marked line, then use a dropper to carefully drop it. The meniscus is exactly tangent to the graduation line. Once the solution exceeds the marked ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 潘鑫
Owner XIAN SHUZHENG ELECTRONICS TECH