Canned food air tightness detection device

Abstract

The invention belongs to the technical field of air tightness detection, relates to a canned food airtightness detection device which comprises a positioning seat, a positioning groove used for containing a can body is formed in the positioning seat, a sealing cover cap is arranged above the positioning groove, the sealing cover cap is movably connected with the positioning seat in the vertical direction and comprises an annular side wall and a circular top wall, and a sealing device is arranged on the inner wall of the annular side wall. The sealing cover cap is assembled in the mode that when the sealing cover cap moves downwards relative to the positioning seat, the sealing cover cap and the top wall and part of the side wall of the can body in the positioning groove can jointly define a closed testing cavity, when the sealing cover cap moves upwards relative to the positioning base, the sealing cover cap can be separated from the can body, and an inflation pipeline and an air pressure detection unit are arranged on the sealing cover cap. The sealing cover cap only seals the sealing area at the upper end of the can body, the sealing area of the can body is detected in a targeted mode, the inflation volume is reduced, the inflation time is shortened, and the air tightness detection efficiency of canned food is improved.

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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