CN2227243Y

CN2227243Y - Concealed gas check for pressure cooker

Info

Publication number: CN2227243Y
Application number: CN 95212862
Authority: CN
Inventors: 牛秋林
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-22
Filing date: 1995-05-22
Publication date: 1996-05-15
Anticipated expiration: 2005-05-22

Abstract

The utility model provides a hidden gas valve which has good safety performance. The hidden gas valve, which is easy to be cleaned and is not easy to be damaged, can take measures to reduce pressure quickly when the gas pressure in the cooker is too large, and the hidden gas valve, which has inversely installed structure, can replace the gas valve device of an existing pressure cooker. The utility model is mainly composed of a valve seat which is arranged on the surface of the lid of the cooker and a valve core which is arranged in the lid of the cooker, wherein, the top of the valve seat is provided with a groove, and the center is provided with a through hole for ventilation which is matched and connected with the valve core which is inversely installed in the cooker through screw threads; the valve core is provided with an inner cavity where a spring and an easy-melting piece can be positioned; the bottom of the valve core is provided with a hole which is corresponding to and is communicated with the ventilation hole of the valve seat.

Description

The hidden air valve of pressure kettle

The safety valve that the utility model relates on a kind of pressure kettle or other pressurized container uses.

General limited valve of air valve device and safety plug on the dual fail-safe pressure kettle of selling on the present market, pressure-limit valve is a weight, and the thimble in it can seal outlet pipe, and the outlet pipe center has pore, is fixed on the pot cover by nut; Safety plug is that second safety installations is a safety installations by metal body and spring assembly; It is made up of upper and lower hollow nut, is embedded with circular fuse sheet.It is too many that the pressure-limit valve of this structure, safety plug protrude the pot cover face, and pot cover is difficult for placing, and the rapid wear projection, and metal hammer is lost easily and lost the high pressure effect.For this reason, the patent No. is 91224818.1 patents that are called the pressure cooker pressure-limiting safety valve, a kind of pressure cooker safety valve that replaces the inverted structure of existing pressure cooker safty device (pressure-limit valve, safety valve, fusible plug) fully is provided, it is by the valve seat that forms in the pot cover perforate, and bar portion stretches into the spool in the pot and is contained in the spring composition of pot interior double as pushing off the slag.It has solved air valve and has protruded the problem of pot face and problem that tup is easily lost, but there is following deficiency in it: (1) easily contacts with the interior food of pot and easy cleaning not because spring is positioned at outside the spool; (2) owing to only a fuse sheet has been installed, Security is not strong, and (3) are exhaust and reducing pressure rapidly when pot inner pressure is too big; (4) be difficult for installing.

The purpose of this utility model is come therefrom, will provide exactly that a kind of Safety performance is good, easy cleaning, not fragile, the hidden safety air vavle of the inverted structure of the alternative existing pressure kettle air valve device of the explosive decompression of can taking measures when the pot internal air pressure is too big.

The utility model adopts following technological means to realize above-mentioned purpose: it has valve seat, stretches into spool part, fuse sheet and spring in the pot, its difference is that described valve seat is contained in the hole of pot cover outer surface, the top has the groove of being convenient to load and unload, top center has the through hole that is used to breathe freely, and the screw thread that cooperates connection with spool is arranged on it; Also have the screw thread that matches with valve seat and to connect on the described spool, bottom centre has size, the corresponding air hole that communicates with the hole on the valve seat in position, and a bigger spring placed and the cavity of fuse sheet are arranged; Described spring, fuse sheet are placed in the spool, and spring is pushed down fuse sheet and blocked air hole when stretching.

Described spring can place on the fuse sheet, also can place under the fuse sheet.

Hidden air valve structure described in the utility model is simple, have automatic vent, dual fail-safe and urgent degassing function, the pot cover outer surface is smooth smooth, not fragile and convenient disassembly, the air valve device of alternative original pressure kettle (pressure-limit valve, meltable valve) purposes is wide, and does not make the pressure kettle band pin of output.

Introduce the utility model below in conjunction with accompanying drawing in detail by embodiment.

Fig. 1 is an an embodiment's of the present utility model sectional view.

Fig. 2 is another an embodiment's of the present utility model sectional view.

The valve seat 2 of the hidden air valve of embodiment as shown in Figure 1 is a screw-type, puts into a hole on pot cover surface from the outside, and valve seat 2 centre bits are equipped with a through hole that is used to breathe freely 6, used groove 8 when the top has to be convenient to load and unload, and the nail bar has outside thread; Being positioned at the spool 3 that pot cover lower seat 2 is connected is that a spiral shell emits, opening end is towards the pot cover inwall, the other end is a closed end, its center have with valve seat 2 on the air hole 6 corresponding air holes that communicate 7, internal thread on the internal chamber wall cooperates together itself and valve seat 2, in the inner chamber of spool 3, fuse sheet 5 is positioned at and blocks the air hole 7 that spiral shell emits the lower end under the pressure spring 4.The described air valve of present embodiment, garden shape fuse sheet 5 are embedded under the air valve bottom spring 4, stretch at normal pressure lower spring 4 to suppress circular fuse sheet 5, seal the aperture 7 at spool 3 centers, and gas can not be gone out in the pot; When vapour pressure increased to rating value in the pot, Pneumatic pipe cleaner was crossed hole, garden 7 extruding fuse sheets 5, and spring 4 shrinks, and fuse sheet 4 upwards leaves air hole 7, and gas is by spool 3, the through hole of valve seat 2 and discharging; When the pot inner pressure temperature reaches maximum value, fuse sheet 4 fusings, gas can be discharged rapidly, and plays safety effect, thereby replaces the pressure-limit valve on the existing pressure kettle.

As shown in Figure 2 be another embodiment's the structural representation that replaces the hidden air valve of fusible plug.With Fig. 1 unique different be that fuse sheet 5 is embedded in the spool upper end and is positioned at the air hole 6 that blocks valve seat on the spring 4.When it increases at normal pressure and pot inner pressure, garden shape fuse sheet 5 by compression spring 4 effect and block the air hole 6 of valve seat, a gas can not be discharged in the pot; When pot inner pressure, when temperature reaches maximum value, fuse sheet 5 fusings, vapour can be discharged rapidly by air hole 6,7, plays safety effect.And when gas is discharged urgent decompression rapidly in the needs pot, except that with the cold water cooling, can also push fuse sheet downwards with the aperture 6 of a thin rod from valve seat 2, spring is shunk and open the air hole 6 of valve seat 2, gas is discharged rapidly and reach the purpose of decompression.

Claims

1, the hidden air valve that uses on a kind of high-pressure bottle comprises valve seat.Stretch into the spool part in the pot.Fuse sheet and spring, it is characterized in that: described valve seat is contained in the hole of pot cover outer surface, the top has groove, the top center being convenient to install and remove and has the through hole that is used to breathe freely, the screw thread that cooperates connection with spool is arranged: have on the described spool to be shaped on the screw thread that cooperates connection with valve seat on the valve seat, bottom centre has size, position and the corresponding air hole that communicates of air hole on the valve seat, described spool has the cavity that can place spring and fuse sheet: described spring, fuse sheet are placed in the cavity of spool, and spring is pushed down fuse sheet and blocked air hole when stretching.

2, hidden air valve as claimed in claim 1 is characterized in that: the described fuse sheet that places in the spool, can place under the spring of spool bottom, and block the air outlet hole of spool, also can place the air hole that blocks valve seat on spool top, the spring.