A device for detecting the air tightness of canned food

Abstract

The invention belongs to the technical field of air tightness detection. Specifically relates to a canned food air tightness detection device, comprising a positioning seat, the positioning seat is provided with a positioning groove for accommodating the can body, a sealing cover is provided above the positioning groove, and the sealing cover is vertically aligned with the positioning seat The sealing cover includes an annular side wall and a circular top wall, and the inner wall of the annular side wall is provided with a sealing device. The sealing cover is assembled so that it can be connected with the tank body in the positioning groove when it goes down relative to the positioning seat. The top wall and part of the side walls jointly form a closed test chamber, and when the sealing cover moves upward relative to the positioning seat, it can be separated from the tank body. The sealing cover is provided with an inflation pipeline and an air pressure detection unit. The sealing cover of the present invention only seals the sealing area of ​​the upper end of the tank body, and detects the sealing area of ​​the tank body in a targeted manner, reduces the inflation volume, reduces the inflation time, and improves the airtightness detection efficiency of canned food .

Description

technical field [0001] The invention belongs to the technical field of air tightness detection. Specifically relates to a canned food air tightness detection device. Background technique [0002] Canned food is a packaging method that can effectively extend the shelf life of food. During the packaging process of canned food, it is necessary to perform air tightness testing on the can body and the packaged canned food. The air tightness test of the can body is carried out before packaging. , mainly to detect whether there are gaps, pores and other defects caused by processing defects during the production and processing of cans, and the canned food after packaging is mainly to detect the sealing area to avoid air leakage caused by incomplete sealing. In the prior art, the airtightness test of canned food is roughly the same as the airtightness test of the can body. It is to put the whole can body into a closed space and then pressurize the closed space. After keeping the pre...

AI Technical Summary

Problems solved by technology

In the prior art, the airtightness test of canned food is roughly the same as the airtightness test of the can body. It is to put the whole can body into a closed space and then pressurize the closed space. After keeping the pressure for a period of time, observe Changes in air pressure. If the air pressure drops significantly, it means that the high-pressure gas has overflowed into the tank, and the airtightness of the tank is not good. On the contrary, if the air pressure drops within an acceptable range, it means that the tank is well sealed (because the detection device itself cannot It is absolutely sealed, so a small pressure loss is normal)

The defect of this detection method is that the space for accommodating the entire tank is relatively large, resulting in a long inflation time, which affects production and detection efficiency

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