Liquid storage type thick-bottom quantitative liquid adding device

Abstract

The invention discloses a liquid storage type thick-bottom quantitative liquid adding device which is composed of a liquid storage bottle, a bottle cap, a graduated scale, a piston tube, a piston, a flow limiting valve, a lifting handle, a limiting nut, a liquid inlet pipe and a liquid outlet pipe. The bottom wall of the liquid storage bottle is thickened and is concave in the liquid storage bottle to form a semicircle shape; the tail end of the liquid inlet pipe is connected with a counter weight type liquid inlet, and at least one protrusion is arranged around a through hole of the counter weight type liquid inlet. Compared with the prior art, the problem that much liquid remains in the liquid storage bottle when the liquid storage bottle is inclined can be solved, meanwhile, the counterweight type liquid inlet can be prevented from being blocked by the bottom wall, in addition, the liquid storage bottle is prevented from being lifted by holding the lifting handle in the liquid adding process, and thus the stability of the liquid adding device is improved.

Description

technical field [0001] The invention relates to a quantitative dosing device, which is suitable for continuous quantitative dosing of various liquids in a laboratory, and is widely used in the fields of chemical industry, quality inspection, scientific research and the like. Background technique [0002] At present, the liquid storage type quantitative dosing device is one of the necessary common tools for laboratory analysis and testing. It is widely used because of its low cost, convenient use, simple operation, and adjustable liquid addition. For this liquid filler, there have been many valuable improvements, such as thickening the bottom wall to increase the weight of the bottle to improve the stability of the liquid storage bottle when adding liquid, or adding a weight to the liquid inlet pipe The liquid inlet is designed to solve the problem of more liquid remaining in the liquid storage bottle. After the improvement, it is more convenient to use, has better safety per...

AI Technical Summary

Problems solved by technology

However, the existing liquid storage type quantitative dosing device cannot improve the stability of the liquid storage bottle while solving the problem of more liquid remaining in the liquid storage bottle after the liquid is added, especially when the liquid storage bottle is tilted. The liquid inlet may not be in the liquid, so that the liquid inside the liquid storage bottle cannot be sucked away by the liquid inlet, resulting in a large amount of liquid remaining inside the liquid storage bottle; Contact, the liquid inlet is easily blocked by the bottom wall of the liquid storage bottle

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