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Uniform mixing device for detecting number of bacteria in food and drug sample

A technology for drug and sample testing, applied in biochemical cleaning devices, enzymology/microbiology devices, bioreactors/fermenters for specific purposes, etc. Operation and other problems to achieve the effect of ensuring the mixing effect

Active Publication Date: 2019-06-11
CHONGQING MEDICAL & PHARMA COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Affected by the skill level of the operator, this method is very likely to cause uneven mixing and spilled mixed solution, thereby causing pollution and even affecting the measurement results; the method of manual shaking is also easy to cause hand fatigue of the operator, which is not conducive to the measurement of a large number of samples operate

Method used

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  • Uniform mixing device for detecting number of bacteria in food and drug sample
  • Uniform mixing device for detecting number of bacteria in food and drug sample
  • Uniform mixing device for detecting number of bacteria in food and drug sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Basic as attached figure 1 , figure 2 Shown: a mixing device for detecting the number of bacteria in food and drug samples, including a console 1, on which a drive shaft 7 is rotatably connected, and a tray 3 for holding petri dishes 2 is rotatably connected to the drive shaft 7 , specifically as figure 2 As shown, the upper end of the drive shaft 7 is also provided with a bearing 16. Here, a pressure bearing is used. The drive shaft 7 is fixedly socketed with the inner ring of the bearing 16, and the tray 3 is fixedly clamped with the outer ring of the bearing 16, thereby reducing the pressure of the drive shaft. 7 and the frictional effect of the relative rotation of the tray 3; the driving shaft 7 is vertically arranged, and the plane where the tray 3 is located is parallel to the upper surface of the console 1; at least three fixing mechanisms for fixing the culture dish 2 are arranged around the tray 3, and the Place has drawn three fixing mechanisms, and the f...

Embodiment 2

[0040] Such as Figure 4 As shown, the difference between the present embodiment and the first embodiment is that the limit claw is also provided with a limit block 10 for limiting the longitudinal height of the culture dish 2, and the limit block 10 is vertically slid on the limit claw, and the specific settings are as follows : vertically open on the limit pawl, there is a chute 17 with a rectangular cross section, on the limit block 10, there is a through hole for the bolt 19 to pass through, and the bottom of the chute 17 is drilled with an internal thread hole that cooperates with the bolt 19, And the bottom of the chute 17 is fixedly welded with a compression spring 18 , and the upper end of the compression spring 18 is fixedly welded to the lower end of the limiting block 10 . Scale lines 11 are marked on the limit claw along the vertical direction. Therefore, this solution can be applied to petri dishes 2 of different heights, and the experimenter can adjust the heigh...

Embodiment 3

[0042] Such as Figure 5 As shown, the fixing mechanism is also provided with a baffle 12 for preventing culture fluid from splashing. The baffle 12 here is fan-shaped, and each of the three fixing mechanisms is provided with a baffle 12. The specific settings of the baffle 12 are as follows : both sides of the baffle plate 12 are respectively glued and fixed on the first limit claw 4 and the second limit claw 5, and the three baffle plates 12 are overlapped, Figure 5 The middle left baffle 12 is at the top, the upper right baffle 12 is in the middle, and the lower right baffle 12 is at the bottom; the baffle 12 is opened with an observation port 20 located on the arc edge of the baffle 12 middle position, and when the three fixing mechanisms are all facing the petri dish 2, the three observation ports 20 just form as Image 6 circular hole shown. This solution can avoid the spilling of the culture medium during the mixing process and improve the utilization rate of the cul...

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Abstract

The invention relates to the technical field of bacterial quantity detection, and relates to a mixing device for detecting the number of bacteria in a food and drug sample. The device includes a operation table; a driving shaft is rotationally connected to the operation table; the driving shaft is rotationally connected with a tray for bearing a culture dish; at least three fixing mechanisms usedfor fixing the culture dishes are arranged around the tray, each fixing mechanism comprises a limiting claw and a rotating shaft used for driving the limiting claw, the limiting claws are fixedly connected with the rotating shafts, the limiting claws comprise first limiting claws and the second limiting claws, and the first limiting claws and the second limiting claws are located on the two sidesof the culture dishes respectively; the rotating shaft is rotationally connected with the tray, a driven gear is fixedly arranged on the rotating shaft, one side of the driven gear is meshed with a driving gear, and the driving gear is fixedly arranged on the driving shaft. By the adoption of the scheme, bacteria can be more stably mixed, and the technical problem that a culture solution is proneto spilling out when the bacteria are shaken and mixed evenly is solved.

Description

technical field [0001] The invention relates to the technical field of bacterial count detection, in particular to a mixing device used for bacterial count detection in food and drug samples. Background technique [0002] In order to understand and judge the hygienic quality of food and medicine, it is often necessary to measure the number of bacteria in food and medicine. During the measurement, the test sample and the culture medium should be evenly mixed in the culture dish, so that the bacteria can be evenly distributed in the culture medium. The current mixing method is mainly realized by shaking the petri dish manually. Affected by the skill level of the operator, this method can easily cause uneven mixing and spillage of the mixed solution, thereby causing pollution and even affecting the measurement results; the method of manual shaking can also easily cause hand fatigue of the operator, which is not conducive to the measurement of a large number of samples operate...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12M1/34C12M1/22
Inventor 段巧玲汪晓艳方昕王瑛陈琦
Owner CHONGQING MEDICAL & PHARMA COLLEGE
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