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Multipath magnetic stirrer for laboratory

A magnetic stirrer, a technology used in laboratories, applied to chemical instruments and methods, dissolution, mixers, etc., can solve problems such as potential safety hazards, and achieve the effect of compact structure, flexible operation, and completely consistent stirring conditions

Inactive Publication Date: 2008-08-06
JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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  • Abstract
  • Description
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Problems solved by technology

However, the motor used in the existing agitator is a 220V AC motor, which has potential safety hazards due to the influence of condensed water

Method used

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  • Multipath magnetic stirrer for laboratory

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Embodiment Construction

[0009] As shown in the figure, in the present invention, a motor 1 drives eight disks 2 to rotate at the same speed at the same time. The motor shaft is equipped with driving wheels, and the disks are equipped with driven wheels. The diameter of each driven wheel is the same, and the reduction transmission ratio is 8. The driving wheel drives a pair of driven wheels to rotate through the transmission belt 3, and at the same time drives the other pair of driven wheels to rotate through the transmission belt 4, and the remaining driven wheels are driven to rotate by other transmission belts respectively. The transmission angle between the transmission belts 3 and 4 and the contact parts of the driving wheel is 120° . The bottom of the magnetic disk is provided with fixed columns fixed on the bottom plate, each fixed column is parallel to the same height, and there is a bearing at the junction of the driven wheel and the fixed column. The motor used is a low-voltage AC motor YJ58...

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Abstract

A multi-channel magnetic stirrer for laboratory use is characterized in that a motor drives a plurality of magnetic disks which are provided with driven wheels of the same diameter to rotate, and that the transmission angle between a transmission belt and the contact position with a drive wheel is 90 degrees to 120 degrees, and the motor is a low voltage AC motor. The stirrer is used for measuring the BOD5 value in water by differential pressure method in laboratory. The stirring conditions of the magnetic disks are the same, thus increasing the measuring accuracy and reducing the error. As the flex harass amplitude of the transmission belt is small, the service life can be prolonged, and safety and reliability can be ensured even working in the incubator with condensed water.

Description

technical field [0001] The invention relates to a laboratory multi-channel magnetic stirrer for measuring the BOD5 value in a water body by a differential pressure method. Background technique [0002] In daily production or life, pollution accidents that damage the environment occur frequently, especially the pollution of drinking water directly affects people's health. An important indicator for evaluating the pollution of the water body environment is the BOD of the water body. 5 value, while the determination of the BOD of water 5 There are many methods to calculate the value, and the differential pressure method is one of the more commonly used methods. The differential pressure method is used to determine the BOD in water 5 The main problem to be solved is to carry out stirring of water samples with consistent conditions under constant temperature conditions for multiple water samples. [0003] At present, the commonly used multi-channel magnetic stirrer uses multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F13/08
Inventor 王根忠丁秋兰
Owner JIANGSU JIANGFEN ELECTROANALYTICAL INSTR
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