CN2181236Y

CN2181236Y - Antiplug and explosion-proof safety valve for pressure cooker

Info

Publication number: CN2181236Y
Application number: CN 94203397
Authority: CN
Inventors: 汤久生
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-02-08
Filing date: 1994-02-08
Publication date: 1994-11-02
Anticipated expiration: 2004-02-08

Abstract

The utility model discloses a clogging-proof and explosion-proof safety valve for a pressure cooker. The utility model is composed of a valve seat, a pressure-limiting body and a clogging-proof needle. The clogging-proof needle is arranged between the valve seat and the pressure-limiting body so that the clogging objects in a steam-discharging hole can be automatically eliminated. In addition, the valve seat and a pressure cooker lid are tightly fitted in the cone shrunk-in type so that in case the explosion pressure is reached in the cooker, the valve seat can be automatically pushed out by steam pressure, and the steam in the cooker can be quickly discharged, which completely avoids the occurrence of accidents. The utility model overcomes the defects that the safety device of an existing pressure cooker can not effectively solve the clogging-proof problem, and that the safety device of an existing pressure cooker does not have the final explosion-proof function.

Description

Antiplug and explosion-proof safety valve for pressure cooker

The utility model relates to a kind of pressure vessel safety device, and the anti-blocking explosion relief valve of particularly a kind of pressure cooker is suitable for all kinds of pressure cookers and uses.

Existing pressure cooker in use; because the problem that the food disintegrating slag stops up gland steam exhauster often takes place; cause safety device to lose efficacy; even cause pot body to explode; jeopardize personal safety; its reason is: the design of pressure cooker safety device at present, and often only notice that pot inner pressure surpasses the protection design of safety margins, and ignored the art designs of avoiding this no less important problem of overvoltage.After having assigned necessary pressure and use the file of anti-block apparatus in State Bureau of Technical Supervision and China National Light Industrial Products Department, some comb net formula anti-block apparatus of the output of arising at the historic moment, but it can only the stop portions tamper, and can not fundamentally solve the gland steam exhauster blockage problem.So at present the pressure cooker safety device is passive safety precautions, rather than the unsafe factor of eliminating initiatively, particularly there is not final explosion prevention function, the possibility that therefore can not eliminating accident safe against all possibilities takes place.

Pressure cooker is as a kind of haberdashery and hardware product, its performance is directly connected to numerous users' safety, national departments concerned is attached great importance to the safety problem of pressure cooker, issued the mandatory standard GB 13623-92 of aluminum pressure cooker safety and performance requirement, and require each pressure cooker manufacturing enterprise in organizing production process, must adopt through the qualified safe anti-block apparatus of the detection of haberdashery and hardware quality monitoring inspection center of China National Light Industrial Products Department, without exception must not adapted without identifying and detecting underproof safe anti-block apparatus.

The national hidden danger that the great attention and the present pressure cooker safety device of pressure cooker safety problem are existed unsafe factor; potential threat to user's security presence; requirement has more advanced, safe novel pressure cooker safety device to come out; to overcome the deficiency that existing pressure cooker safety device exists, effectively protect user's safety.

The purpose of this utility model provides the anti-blocking anti-explosion safety device of a kind of novel pressure cooker, and it improves existing pressure cooker safety device, partly is made up of valve seat, pressure limiting body, anti-blocking pin etc.Between valve seat and pressure limiting body, anti-blocking pin is housed, can removes gland steam exhauster automatically and stop up, to avoid the generation of overvoltage and accident; And adopt the forced tight fit of cone between valve seat and the pressure cooker cover, make when the contingency overvoltage reaches blast pressure in the pot, in the moment that the pot body begins to be out of shape, valve seat is promptly ejected automatically by vapour pressure, and discharges the interior gas that takes the dish out of the pot rapidly.

The utility model is achieved in that the anti-blocking explosion relief valve of pressure cooker partly is made up of valve seat, anti-blocking pin, pressure limiting body etc.The bottom of valve seat is a gland steam exhauster, and its outer surface is a taper seat, and and pressure cooker cover between adopt forced tight fit; Valve seat top is the cylinder cup-shaped, evenly has the plurality of rows steam vent in its side along circumference, and circular arc or circular cone transition face are arranged between its inner lateral surfaces and the bottom surface.The pressure limiting body is a heavy thallium, is contained in the valve seat, and its outer surface cooperates for movable with valve seat interior surface; In the bottom of pressure limiting body one endoporus is arranged.Anti-blocking pin is contained in the valve seat between the pressure limiting body and valve seat, in its outer surface of upper and the pressure limiting body between the internal surface of hole for activity cooperates, and have necessarily and rock.Its underpart is an elongated needle, and cooperates for movable between the valve seat gland steam exhauster endoporus, and also has necessarily and rock.

The utility model is achieved in that vapour pressure just often in pressure cooker, anti-blocking pin falls automatically along the gland steam exhauster endoporus, pressure limiting body free-falling in valve seat thereupon, owing between valve seat inner surface and the bottom surface transition arc or taper seat are arranged, make and realize sealing between pressure limiting body and the valve seat, limit the pressure cooker internal pressure.When pot inner pressure exceeds when limiting pressure, the overvoltage gas promptly backs down anti-blocking pin and pressure limiting body by the gland steam exhauster endoporus, and is discharged and gone out by each exhaust hole of valve seat side.When the gland steam exhauster endoporus was stopped up by the food disintegrating slag, gas rose no longer thus in the pressure cooker, and anti-blocking pin falls automatically, backs down tamper, gets through the vapour road.When pot inner pressure was in the critical condition that normal pressure and overvoltage constantly substitute, because the discharge that gas is interrupted in the pressure cooker, the pressure limiting body was in suspended state in valve seat, and anti-blocking pin is play up and down then, and the obstruction of gland steam exhauster is eliminated at any time.If just in case the various protective devices of pressure cooker lost efficacy; be about to the moment of distortion blast at pot body pressurized; because forced cooperation the between valve seat bottom gland steam exhauster outer surface and the pressure cooker cover, valve seat will be ejected automatically by gas and discharge a gas in the pot rapidly, and blast finally is avoided.

It is undesirable that the utility model has overcome existing pressure cooker safety device blocking-proof result, and the defective that does not have final explosion prevention function is compared with existing safety device, has the following advantages: 1, compare with existing pressure cooker safety device, gland steam exhauster length shortens greatly, has reduced the possibility of stopping up.2, the passive pre-anti-clogging that becomes existing Anti-stop cover, anti-blocking dish is stopped up into adopting anti-blocking pin initiatively to get rid of gland steam exhauster at any time, and the gland steam exhauster blockage problem is solved at all.3, adopt the forced structure of cone between valve seat and the pressure cooker cover, have final explosion prevention function, avoided the danger of pot body blast fully.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is an assembling schematic diagram of the present utility model.

Fig. 2 is the floor map of the utility model valve seat.

Fig. 3 is the floor map of the utility model pressure limiting body.

Fig. 4 is the floor map of the anti-blocking pin of the utility model.

Fig. 5 is a sealed structural representation between the utility model valve seat and the pressure limiting body.

With reference to Fig. 1.The utility model is made up of valve seat (2), pressure limiting body (4), anti-blocking pin parts such as (6).Valve seat (2) is contained on the pressure cooker cover (1) by the gland steam exhauster (5) of its underpart, and pressure limiting body (4) and anti-blocking pin (6) are contained in the valve seat (2).

With reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5.The bottom of valve seat (2) is gland steam exhauster (5), and gland steam exhauster outer surface (7) is a taper seat, and and pressure cooker cover (1) between adopt forced tight fit.Gland steam exhauster endoporus (8) is an elongated hole, and (12) suitable for reading in hole expand to hollow cone.Valve seat (2) top (13) is the cylinder cup-shaped, evenly has plurality of rows steam vent (3) in its side along circumference.Circular arc or conical transition face (10) are arranged between valve seat inner lateral surfaces (9) and bottom surface (11).Pressure limiting body (4) is a heavy thallium, is contained in the valve seat (2), cooperates for activity between its outer surface (14) and the valve seat interior surface (9); Endoporus (15) is arranged in the bottom of pressure limiting body.Anti-blocking pin (6) is contained in the valve seat between the pressure limiting body (4) and valve seat (2), is that activity cooperates between the inner surface (16) of its outer surface of upper (17) and pressure limiting body endoporus (15), and certain rocking arranged.Its underpart (18) is cylindrical or conical or the spirality elongated needle, and cooperates for movable between the valve seat gland steam exhauster endoporus (8), and has necessarily and rock.

During the utility model work, under the normal situation of vapour pressure, anti-blocking pin (6) falls automatically along gland steam exhauster endoporus (8) in pressure cooker, and pressure limiting body (4) also freely falls in valve seat (2) thereupon.Owing between valve seat inner surface (9) and bottom surface (11) circular arc or circular cone transition face (10) are arranged, make and realize sealing between pressure limiting body (4) and the valve seat (2), limit the pressure cooker internal pressure.When pot inner pressure exceeded qualification pressure, the overvoltage gas promptly backed down anti-blocking pin (6) and pressure limiting body (4) by gland steam exhauster endoporus (8).And discharge and go out by each exhaust hole (3) of valve seat side.When the gland steam exhauster endoporus was stopped up by the food disintegrating slag, gas rose no longer thus in the pressure cooker, and anti-blocking pin falls automatically, backs down tamper, gets through the vapour road.When pot inner pressure is in the critical condition of normal and the continuous replacement of overvoltage, because the discharge that gas is interrupted in the pressure cooker, pressure limiting body (4) is in suspended state in valve seat (2), anti-blocking pin (6) is play up and down then, and the tamper in the gland steam exhauster is eliminated at any time.If just in case pressure cooker and various protective device are entirely ineffective; be about to the moment of distortion blast at pot body pressurized; because forced cooperation the between valve seat bottom gland steam exhauster outer surface (7) and the pressure cooker cover (1); valve seat (2) will be ejected automatically by gas and discharge the interior vapour pressure that takes the dish out of the pot rapidly, and blast finally is avoided.

Claims

1, the anti-blocking explosion relief valve of a kind of pressure cooker is made up of valve seat (2), pressure limiting body (4), anti-blocking pin parts such as (6), it is characterized in that:

A. the bottom of valve seat (2) is gland steam exhauster (5), gland steam exhauster outer surface (7) is a taper seat, and and the forced tight fit of employing between the pressure cooker cover (1), gland steam exhauster endoporus (8) is an elongated hole, (12) suitable for reading in hole expand to hollow cone, and the top of valve seat (13) are the cylinder cup-shaped, evenly have plurality of rows steam vent (3) in its side along circumference, circular arc or conical transition face (10) are arranged between valve seat inner lateral surfaces (9) and bottom surface (11)

B. pressure limiting body (4) is a heavy thallium, is contained in the valve seat (2), for activity cooperates, endoporus (15) is arranged in the bottom of pressure limiting body between its outer surface (14) and the valve seat interior surface (9),

C. anti-blocking pin (6) is contained between interior pressure limiting body of valve seat (2) (4) and the valve seat, its outer surface of upper (17) cooperates for movable with the inner surface (16) of pressure limiting body endoporus (15), and certain rocking arranged, its underpart (18) is elongated needle-like, with cooperate for movable between the valve seat gland steam exhauster endoporus (8), and certain rocking arranged also.