Inflating and deflating device

A technology of aeration device and reflux device, which is applied in the direction of material inspection, food testing, etc., can solve the problems that the dropping funnel cannot drip, increase the difficulty and cost, and increase the difficulty of feeding, so as to reduce the cost of firing, the device is simple, The effect of reliable test results

Inactive Publication Date: 2015-04-22
COMPREHENSIVE TECH SERVICE CENT OF QUANZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF P R C
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of these two devices are: the difficulty and cost of firing the whole device are increased by using the dropping funnel, and the internal and external pressure balance is required through the dropping funnel, which will easily cause the pressure imbalance of the system when nitrogen gas or sulfur dioxide gas is generated, resulting in dripping. The funnel cannot drip
Chinese patent applications CN 200810244378 and CN 201320093941 are both single-neck round bottom flasks, which increase the difficulty of adding materials during the experimental operation

Method used

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  • Inflating and deflating device

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 A kind of inflatable air outlet and backflow device

[0038] Such as figure 1 Shown a kind of inflatable gas outlet reflux device, comprises: multi-necked flask (A), multi-necked flask A is provided with narrow-necked mouth (1) and wide-necked mouth (2), narrow-necked mouth (1) and reflux condenser ( B) is connected, the branch pipe (1) of the reflux condenser (B) is connected with the absorption bottle (C); the branch (2) of the reflux condenser (B) is connected to a grinding port (3) with branch pipes at both ends, The other end of the ground mouth (3) with branch pipes at both ends is connected to a ventilation device (D), and the branch pipe (1) and branch port (2) of the reflux condenser pipe (B) communicate with the inner pipe of the reflux condenser pipe.

Embodiment 2

[0039] Embodiment 2 adopts the method for detecting sulfite in food by the device of embodiment 1

[0040] The inflation and air outlet device of embodiment 1 is used for the detection of sulfite in food, and the specific method is as follows:

[0041] a) In the wide-neck mouth (2) of the multi-necked flask (A), add distilled water 20ml, volume fraction is 5% dimedone ethanol solution (1ml), mass fraction 1% sodium azide solution (1ml), 2ml of ethanol, 2 drops of silicone oil for defoaming and 10% phosphoric acid solution (10ml);

[0042] b) Add 20ml of 0.1mol / L sodium hydroxide solution in the absorption bottle (C) as the sulfur dioxide absorption solution;

[0043] c) the reflux condenser (B) is connected in the narrow neck opening (1) of the multi-necked flask (A), and the branch pipe (1) of the reflux condenser (B) is connected with the absorption bottle (C);

[0044] d) One end of the grinding port (3) is inserted into the branch port (2) of the reflux condenser (B) to ...

Embodiment 3

[0048] A set of integrated device for detecting sulfite, which includes: more than two attached figure 1 The air-inflated outlet air-return device shown is installed on the same heating device at the same time, and constitutes as attached figure 2 said integrated device.

[0049] attached figure 2 The integrated device has fixing grooves and ferrules, and can heat multiple multi-neck flasks (A) at the same time, thereby realizing batch testing of more than two samples at the same time.

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Abstract

The invention discloses an inflating and deflating device. The inflating and deflating device comprises a multi-neck flask (A), a reflux condensing tube (B) and an absorption bottle (C) and is characterized in that a narrow neck (1) of the multi-neck flask (A) is connected with the reflux condensing tube (B), a branch tube (1) of the reflux condensing tube (B) is connected with the absorption bottle (C), a branch mouth (2) of the reflux condensing tube (B) is connected with a ground mouth (3) with branch tubes at the two ends, and one end of the ground mouth (3) is connected with an inflating device (D). The inflating and deflating device is simple and low in firing cost, and operation is convenient when carbon dioxide in food is detected.

Description

technical field [0001] The invention relates to the technical field of food detection, in particular to a reflux device for detecting sulfite in food. Background technique [0002] Sulfur dioxide, sulfite, low sulfite, pyrosulfite and sulfur are used as food additives in food production. They are mainly used as bleaching, antiseptic, anti-oxidation and dough improver by using their reducing properties, and are mostly used in dried bamboo shoots, dried vegetables, dried fruits, mushrooms, rice products, biscuits, sugar, candied fruit, cans, vermicelli, fruit and vegetable juices, etc. agricultural products and products. The country has strict limits on its maximum dosage (GB 2760-2011). When the sulfur dioxide content exceeds a certain standard, it is detrimental to human health. In order to effectively protect the health and safety of the people and better control the quality and safety of agricultural products, it is necessary to accurately monitor the sulfite content in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/02
Inventor 许彩霞吴洪成林淼李亦军翁城武韦航连小彬吴俐
Owner COMPREHENSIVE TECH SERVICE CENT OF QUANZHOU ENTRY EXIT INSPECTION & QUARANTINE BUREAU OF P R C
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