Multifunctional safety valve

Abstract

The invention discloses a multifunctional safety valve. The multifunctional safety valve comprises a valve seat and a valve element, wherein the valve seat is of a hollow structure, and the valve element is arranged in the valve seat in an up-down sliding mode; the valve core comprises a valve rod, a pressure spring and a sealing plug; a through hole is vertically formed in the valve rod; the inner wall of the through hole is provided with a mounting groove which is radially formed outwards; the sealing plug is arranged in the mounting groove in a vertical sliding mode and can cover the loweropening of the mounting groove; the maximum outer diameter of the sealing plug is smaller than the inner diameter of the mounting groove; and the upper end of the pressure spring abuts against the extension wall of the upper opening of the mounting groove, and the lower end of the pressure spring is arranged on the sealing plug and pushes the sealing plug to close the lower opening of the mountinggroove. When the body of a pressure cooker reaches high pressure, the safety valve can release pressure, so pressure in the pressure cooker body is prevented from continuously increasing, and the cooker body or food in the cooker body is thus prevented from damage caused by increasing pressure; the safety valve is provided with ultrahigh pressure protection, and when the pressure in the pressurecooker body reaches the ultrahigh pressure of 190 KPa-300 KPa, the safety valve can effectively release the pressure of the pressure cooker body.

Description

technical field [0001] The invention belongs to the technical field of safety valves, in particular to a multifunctional safety valve. Background technique [0002] The safety valve is a valve set on the lid of the pressure cooker. Its function is: when the pressure inside the pressure cooker is greater than the atmospheric pressure outside, the safety valve floats up under the pressure inside the pressure cooker, thereby preventing the stopper located in the upper handle of the pressure cooker. Open the plate to open the action; when the pressure inside the pressure cooker is equal to the atmospheric pressure, the safety valve will fall back under the action of its own gravity, so that it is convenient for the user to push the opening plate and open the lid. [0003] Existing safety valves of this type have relatively single functions, such as the Chinese utility model patent whose publication number is CN2361196, which discloses a partial structure of a pressure cooker sto...

AI Technical Summary

Problems solved by technology

[0003] Existing safety valves of this type have relatively single functions, such as the Chinese utility model patent whose publication number is CN2361196, which discloses a partial structure of a pressure cooker stop valve stem. A fusible spacer is set in the hole; when high temperature and high pressure are generated in the pressure cooker and the pressure cooker cannot be relieved, the high-pressure gas in the pot will break through the fusible spacer and rush out of the pot body through the through hole, so as to relieve pressure, Exhaust effect

Since the above exhaust method uses fusible spacers to exhaust, although it can achieve certain effects, but because the fusible spacers are consumables, they are easy to be damaged, and the opening pressure is not stable.

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