Water bath oscillator for plant seed sample detection

Abstract

The invention relates to the technical field of detection instruments, and discloses a water bath oscillator for plant seed sample detection, which comprises a machine body and a top cover, the bottomof the machine body is movably connected with a rotary oscillation rod extending to the top of the machine body, and the top end of the rotary oscillation rod is fixedly connected with a water bath box; fixing rods and fixing rings are evenly and fixedly installed in the middle of the interior of the water bath box in a net shape, the outer rings of the fixing rings are evenly and fixedly connected with one ends of the fixing rods in the front-back direction and the left-right direction, and vertical sleeve rods are fixedly installed at the bottom of the middle of an inner cavity of the machine body; wherein a horizontal first bevel gear, a vertical second bevel gear and a horizontal third bevel gear are movably installed on the outer ring of the vertical sleeve rod; an impeller is fixedly installed at the top of the third bevel gear, a hinge connecting rod is fixedly connected to the outer ring of the bottom of the first bevel gear. In the device, a test tube is clamped by controlling a fixing ring to guarantee stability, and then the impeller is driven to rotate through gear transmission to stabilize the water surface.

Description

technical field [0001] The invention relates to the technical field of detection instruments, in particular to a water bath oscillator for detection of plant seed samples. Background technique [0002] Before planting, plant seeds need to be tested and selected to ensure that they can meet the standards and avoid low survival rate and poor quality. Therefore, it is necessary to use a water bath oscillator for testing. The water bath oscillator uses the effect of oscillation to achieve uniform mixing of seeds in the test tube. At the same time, it maintains a constant water temperature inside. Although this water bath oscillator has a simple structure and is easy to use, it also has some problems: [0003] 1. The water bath box of the existing water bath oscillator uses spring bars to clamp the test tube. First of all, the clamping stability of this kind is poor, and it will cause shaking under the condition of high-speed vibration, so as the vibration speed becomes faster, i...

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Problems solved by technology

[0003] 1. The water bath box of the existing water bath oscillator uses spring bars to clamp the test tube. First of all, the clamping stability of this kind is poor, and it will cause shaking under the condition of high-speed vibration, so as the vibration speed becomes faster, it will It will cause the test tube to tilt or hit together, and this kind of clamping instability will also cause the test tube to fluctuate with the water surface, which is not conducive to uniform stirring;

[0004] 2. The water bath oscillator mostly adopts the rotary vibration method, which will form a vortex flow inside the body, so that the water surface near the inner wall is high and the water surface near the center is low, which is not conducive to heating. Stopping ups and downs will also cause the test tube to be heated unevenly, which is not conducive to the accuracy of the test results

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