Liquid distribution valve for tissue dehydrator

Abstract

The invention relates to a liquid distribution valve for a tissue dehydrator. The liquid distribution valve comprises a valve shell, and a distribution valve plug which can be rotated in the valve shell; a plurality of liquid inlet holes are uniformly distributed on the valve shell along the circumferential direction; the distribution valve plug is provided with a liquid communication hole which can be communicated with the liquid inlet holes through rotation and an optoelectronic switch control device for controlling the distribution valve plug to rotate; the optoelectronic switch control device comprises an optoelectronic signal receiving unit, a dividing plate and a control device; the diving plate is coaxially arranged on a rotation shaft of the distribution valve plug; open slots of which the number is the same as that of the liquid inlet holes on the valve shell are uniformly distributed on the dividing plate along the circumstantial direction; and the optoelectronic signal receiving unit is arranged at the corresponding position of the open slots of the dividing plate. Accurate control is realized by adopting an optoelectronic switch, the structure of the distribution valve plug is improved, the volume is reduced, the friction surface is reduced, driving power is lower, the liquid distribution valve is rotated more flexibly, and can act in place more reliably, the sealing effect is improved, and the phenomenon of liquid leakage is avoided.

Description

technical field [0001] The invention relates to the technical field of components of a tissue dehydrator, in particular to a liquid distributing valve for a tissue dehydrator. Background technique [0002] For pathological diagnosis of diseases, the tissue samples submitted for inspection need to be fixed, dehydrated, transparent, and soaked in wax to make paraffin block slices. The tissue dehydrator automatically immerses human or animal and plant tissues in various solvents for dehydration and transparency. , wax dipping and other pathological analysis pretreatments, suitable for use in laboratories of medical colleges, hospital pathology departments, medical research units, animal and plant research units, and food testing departments. Existing tissue dehydrators are divided into two categories according to their working methods. One is to arrange several liquid tanks with different solutions such as alcohol, xylene, liquid paraffin and other processing solutions in a cir...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the deficiencies in the prior art, the present invention provides a liquid distributing valve for a tissue dehydrator, which can precisely control the rotation angle of the distributing valve core by using a photoelectric switch, making the operation easier Sensitive, to avoid technical problems of improper rotation

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