Pressure limiting, safety and pressure relief integrated valve of pressure cooker

Abstract

The invention discloses a pressure limiting, safety and pressure relief integrated valve of a pressure cooker. The pressure limiting, safety and pressure relief integrated valve comprises a pressure limiting exhaust pipe, an upper threaded connector, a lower threaded connector, a safety pressure spring, a relief pressure spring, a sealing ring, a pressure limiting valve, an anti-blocking cover and a clamping structure. The pressure limiting exhaust pipe, the upper threaded connector, the lower threaded connector, the safety pressure spring, the relief pressure spring, the sealing ring, the pressure limiting valve, the anti-blocking cover and the clamping structure are combined with one another and are mounted on a lid of the pressure cooker. The working pressure of the pressure cooker is controlled by the exhaust pipe and the pressure limiting valve, the safety exhaust pressure of the pressure cooker is controlled under the matched effect of the exhaust pipe and the safety pressure spring, and the relief pressure of the pressure cooker is controlled under the matched effect of the threaded connectors and the relief pressure spring. Compared with a conventional safety valve of a pressure cooker, the pressure limiting, safety and pressure relief integrated valve has the advantages that a narrow inner cavity can be omitted, and blocking or failure can be prevented. Besides, the basic difference between the pressure limiting, safety and pressure relief integrated valve and a conventional pressure relief structure is that the relief pressure of the pressure cooker can be precisely designed and controlled by the pressure limiting, safety and pressure relief integrated valve, injury to people due to high-temperature food which is ejected out of the pressure cooker during pressure relief can be completely eradicated, a protective cover can be omitted during detection, and safety can be completely guaranteed during operation.

Description

【Technical field】 [0001] The invention relates to a safety accessory of a pressure cooker, in particular to a pressure limiting, safety and pressure relief integrated valve of the pressure cooker. 【Background technique】 [0002] At present, although safety protection devices such as pressure limiting valves, safety valves, and alarm valves are installed on the pressure cooker, safety accidents occur from time to time. The main reasons for the analysis are as follows: first, the exhaust hole of the pressure limiting exhaust pipe is slender, which is easy to block and fail; Safety valves and alarm valves usually do not work, so it is difficult to distinguish between good and bad; in particular, there is another reason, which is the misleading propaganda of so-called multiple guarantees, safety and worry-free, making users mistakenly think that with multiple guarantees, everything will be fine, but it is not the case , once several reasons appear at the same time, safety accid...

AI Technical Summary

Problems solved by technology

[0002] At present, although safety protection devices such as pressure limiting valves, safety valves, and alarm valves are installed on the pressure cooker, safety accidents occur from time to time.

The main reasons for the analysis are as follows: first, the exhaust hole of the pressure limiting exhaust pipe is slender, which is easy to block and fail; Safety valves and alarm valves usually do not work, so it is difficult to distinguish between good and bad; in particular, there is another reason, which is the misleading propaganda of so-called multiple guarantees, safety and worry-free, making users mistakenly think that with multiple guarantees, everything will be fine, but it is not the case , once several reasons appear at the same time, safety accidents will occur

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