CN2452417Y

CN2452417Y - Safety device for pressure cooker

Info

Publication number: CN2452417Y
Application number: CN 00258839
Authority: CN
Inventors: 蔡才德
Original assignee: SUBOER GROUP CO Ltd
Current assignee: Zhejiang Supor Co Ltd
Priority date: 2000-10-13
Filing date: 2000-10-13
Publication date: 2001-10-10
Anticipated expiration: 2010-10-13

Abstract

The utility model belongs to an improvement for the prior safety device for pressure cooker, comprising a valve handle embedded on a cooker cover, a spring base fixed at the bottom of the valve handle and a spring arranged between the spring base and a rubber body. When the utility model is used normally, the ultra-safe pressure in the pressure cooker is decompressed by the valve handle being jacked up; when the spring does not work, the valve handle can not be jacked, and the excess pressure in the cooker is decompressed by the rubber body being jacked out of the cooker cover to ensure the safe use of the pressure cooker. The safety device for pressure cooker has the advantages of plugging prevention, fast decompression, safety, convenience, etc. The utility model is particularly suitable for assemblage on domestic pressure cookers.

Description

A kind of pressure cooker safety valve

The utility model relates to the accessory of family expenses pressure cooker, particularly to having a kind of improvement of pressure cooker safety valve now.

The safeties of existing pressure cooker have two kinds, and a kind of is fuse sheet, and another kind is a safety valve; The former is malfunctioning easily, does not often have the safety guarantee effect; Latter's production process is loaded down with trivial details, complex structure, cost height.The applicant had once applied for to Patent Office of the People's Republic of China that the patent No. was " the pressure cooker flame-arrester vent plug " of ZL962476401 on November 30th, 1996 for this reason.This structure is split the flame-arrester vent plug sheet rubber top that is contained on the pot cover by the super safe pressure in the pressure cooker, discharges a pot interior overvoltage gas, reaches the purpose of pressure cooker safe handling.But because the sheet rubber top needs to change rubber stopper after splitting, so use inconvenient.

The pressure cooker safety valve that provides a kind of safety coefficient higher is provided the purpose of the utility model.

The technical solution of the utility model is achieved in that it comprises the rubber bodies that is entrenched on the pot cover, the center of rubber bodies has steam vent, be penetrated with the valve rod of the spacing sealing platform of top band on the steam vent, spring base is equipped with in the valve rod bottom, between spring base and the rubber bodies spring is housed.Because the effect of spring, the sealing platform of valve rod is with the steam vent sealing of rubber bodies, when the pot internal gas pressure rises over proof safe pressure (200Kpa), spring base is by air pressure jack-up, and drive the valve rod rising, at this moment, gas is released by the gap between valve rod and the steam vent in the pot.If spring is malfunctioning, be integral because elasticity is chimeric between rubber bodies and the pot cover, the safe pressure that exceeds the quata in the pot ejects the pot cover outside with rubber bodies and discharges gas in the pot rapidly, thereby reaches the purpose of secondary safety precaution.

After making rubber bodies by jack-up, exhaust rapidly is not rushed out outside the pot again, causes casualty accident, and the utility model is made aperture greater than chimeric rubber bodies on the pot cover with the spring base external diameter.

Embodiment shown in descending to show in conjunction with the accompanying drawings is described in further detail the utility model.

Fig. 1 is the structural representation that the utility model is in sealing state.

Fig. 2 is the schematic diagram that the utility model is in the one-level exhaust condition.

Fig. 3 is the schematic diagram that the utility model is in the secondary exhaust condition.

A kind of pressure cooker safety valve is applied in the valve rod 3 on the rubber bodies 5 by the rubber bodies 5 that is embedded on the pot cover 8, be fixed on the spring base 1 of valve rod 3 bottoms and be contained in spring base 1 and rubber bodies 5 between spring 2 form.

Rubber bodies 5 is the garden tubular, and it is also thereon chimeric that outer wall has the ring recess that matches with pot cover 8 apertures, thickness; The center of rubber bodies 5 has the steam vent 6 of perforation, and the aperture of steam vent 6 guarantees that greater than the 1-3mm of valve rod 3 diameter of sections steam vent 6 has the certain clearance exhaust; Valve rod 3 tops have the spacing sealing platform 7 that is down taper, seal vents 6; Spring base 1 is the garden plate-like, and its external diameter is rushed out outside the pot cover 8 to prevent rubber bodies 5 greater than more than the pot cover 9 aperture 3mm, causes casualty accident.Spring base 1 center has the groove of putting spring 2, plays retainer spring 2.The other end of spring 2 is against on the sheath 4 of rubber bodies 5 grooves.

When the utility model used, under the normal condition, pressure cooker exceeded safe pressure and leans on valve rod 3 by the jack-up pressure release, reaches the purpose of one-level pressure limiting strick precaution, sees Fig. 2.When spring 3 was malfunctioning, valve rod 3 can not be by the jack-up pressure release, and elastic rubbery body 5 integral body are ejected pot cover 8 outer pressure releases under the effect of superpressure, reached the purpose of secondary strick precaution, referring to Fig. 3.

Obviously, the utility model is owing to the structure that adopts the secondary pressure limiting to take precautions against, and the exhaust passage is short, so have the obstruction of being difficult for, pressure release is fast, and is easy for installation, uses advantages such as safer, is particularly suitable for being assemblied on the family expenses pressure cooker.

Claims

1, a kind of pressure cooker safety valve, comprise the rubber bodies (5) that is entrenched on the pot cover (8), it is characterized in that: have steam vent (6) on the rubber bodies (5), be penetrated with top on the steam vent (6) and have the valve rod (3) of spacing sealing platform (7), spring base (1) is equipped with in valve rod (3) bottom, between spring base (1) and the rubber bodies (5) spring (2) is housed.

2, according to the described pressure cooker safety valve of claim 1, it is characterized in that: the maximum outside diameter of spring base (1) is installed the aperture of rubber bodies (5) greater than pot cover (8).