A kind of microbial sample smear pen

Abstract

The invention relates to a smear pen, more specifically a microbial sample smear pen, comprising a pen case, a pen holder, a rotating wheel, a liquid pushing mechanism, a blocking mechanism, a pen head, a flow control mechanism and a moving mechanism, which can be manually Turning the rotating wheel through the screw thread for horizontal transmission makes the liquid pushing mechanism change the capacity and pressure of the pen case, so that the pen case can absorb and discharge liquid. When the pen case absorbs liquid, the tapered groove Ⅰ is closed, and the tapered groove Ⅱ is opened. The liquid flows in from the tapered groove II. When the pen casing is discharging liquid, the tapered groove I opens, the tapered groove II closes, and the liquid flows in from the tapered groove I. The flow rate of the tapered groove II is greater than that of the tapered groove I so that the paint The faster the suction speed of the tablet pen improves the efficiency, the slower the discharge speed of the smear pen improves the accuracy. Turn the pen head to make the air hole of the pen head communicate with the blocking groove, and the liquid can be moved from under the action of air pressure without turning the rotating wheel The mechanism flows out, changing the liquid-out state of the smear pen.

Description

technical field [0001] The invention relates to a smear pen, in particular to a microbial sample smear pen. Background technique [0002] For example, the publication number CN207313602U is a microbial sample smear pen, its structure includes a smear pen body, a resin shell, a middle tube, a pipette, a movable external joint, and a smear pen tip, and the outside of the smear pen body is provided with a resin shell , the inside of the resin shell is provided with a middle tube, and the middle tube is fixedly connected with the smear pen body through the resin shell, and the inside of the middle tube is provided with a suction tube, and the liquid suction tube is connected to the moving outer tube through the middle tube. The joints are moved and connected, and the front end of the moving outer joint is provided with a smear pen head, and the smear pen head is connected with the middle tube through the moving outer joint. The utility model relates to a microbial sample smear ...

AI Technical Summary

Problems solved by technology

The utility model relates to a microbial sample smear pen, which can collect samples by setting a suction tube with a movable external joint, and can cooperate with the movement after rotation by setting a half-arc inclined plate with a nylon brush head. When the sample is released, the external joint can evenly smear the sample, the structure is simple, and it is easy to realize; the disadvantage of this utility model is that the speed of the smear pen cannot be changed when it absorbs and discharges liquid, so that the accuracy and efficiency of the smear pen are low

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