CN201254340Y

CN201254340Y - Container decompression cover

Info

Publication number: CN201254340Y
Application number: CNU200820099734XU
Authority: CN
Inventors: 张兴海; 彭自力
Original assignee: YUAN INNOVATION TECH Co Ltd
Current assignee: Chongqing Branch of DFSK Motor Co Ltd
Priority date: 2008-08-18
Filing date: 2008-08-18
Publication date: 2009-06-10
Anticipated expiration: 2018-08-18

Abstract

The utility model relates to a container pressure relief cover, which comprises a cover body, a valve body is arranged under the cover body, the valve body comprises a valve casing, a pressure valve support and a resorption valve, the valve casing is mounted on the cover body, the pressure valve support and the resorption valve are arranged in the valve casing, the pressure valve support is positioned on steps disposed in the valve casing, an elastic part is arranged between the pressure valve support and the upper part of the valve casing as well as between the resorption valve and the lower part of the valve casing respectively, a pressure relief opening is arranged on the valve casing higher than the step position, an air hole is disposed in the center of the pressure valve support, and the resorption valve covers the air hole under the action of a resorption spring. The utility model has advantages of reliable operation and high accuracy control of pressure relief, and can release the pressure accurately as required; when the pressure in the container is lower than the atmospheric pressure, the outside atmosphere will conquer the function of the resorption spring to push the resorption valve open so as to enter the container, then the pressure inside and outside the container stays the same; meanwhile, a valve core will not be broken easily, the lifetime is extended, and the utility model is particularly applied to radiator pressure kettles.

Description

A kind of container pressure release lid

Technical field

The utility model relates to the special-purpose pressure release lid of a kind of container, and this lid can more accurately discharge the pressure that produces in the container makes it be maintained at the level of an equilibrium.

Background technology

Some containers can produce pressure in put procedure or in the working process, if can not well be discharged, will cause damage to container.Such as radiator, radiator is as indispensable parts on the vehicle, for the temperature that reduces heat generating components, improve parts service life, guarantee that system normally, running has important effect reliably.Cooling is housed in the radiator uses circulating water, take away heat by circulating of water.When system's normal operation, the heating of each parts may make circulating water heat up higher and produce a large amount of steam, makes the radiator internal pressure become very high thus, if untimely pressure release may make radiator casing produce distortion and final the damage.Based on such reason, radiator is supporting the pressure release pressure cooking kettle.When the radiator internal pressure is elevated to certain the time, just can pass through the pressure cooking kettle hold-off pressure, till differential pressure gets off.Prior art is provided with lid above radiator, set up blowdown valve in lid, is connected with pressure cooking kettle by blowdown valve.Comprise that the deficiency that the existing pressure release lid of above-mentioned radiator blowdown valve (pressure release lid in other words) exists mainly contains: 1, can not misoperation be arranged at needs hold-off pressure hold-off pressure accurately constantly, may shift to an earlier date, also may delay, functional reliability is poor; 2, the core-spool of pressure release lid is fragile under action of high temperature, and the life-span is not long.

The utility model content

At the prior art above shortcomings, the purpose of this utility model provides and a kind ofly can accurately discharge the container pressure release lid that container inner pressure and life-span can increase.

The technical solution of the utility model is achieved in that a kind of container pressure release lid, comprise lid and the valve body that is positioned at the lid bottom, it is characterized in that: described valve body comprises valve casing, pressure valve bearing and the suck back valve that is positioned at pressure valve bearing below, valve casing is installed on the lid, pressure valve bearing and suck back valve are located in the valve casing, the pressure valve bearing is positioned on the step that valve casing establishes, be provided with elastomeric element between pressure valve bearing and the valve casing top and between suck back valve and the valve casing bottom, on valve casing, be higher than the step position and be provided with pressure relief opening, pressure valve bearing center is provided with pore I, and suck back valve covers described pore I under the effect of elastomeric element.

Be provided with packing seal between pressure valve bearing and valve casing step, the packing seal center is provided with the pore II that communicates with pore I, and suck back valve under the effect of elastomeric element is covering the pore on packing seal and the pressure valve bearing.

Described valve casing is made up of upper shell that is fixed together and lower house, and upper shell is positioned in the lid by the limited step on the lid, and pressure relief opening is located on the lower house.

Described lid has the outside thread with the container screw-internal thread fit, and the lid outer has and the integrated annular peripheral that is used for the encirclement of vessel port connecting portion of lid.

Described elastomeric element is a spring.

Compared to existing technology, the utlity model has following beneficial effect:

1, reliable operation, the control of pressure release precision is high, can be in the constantly accurate hold-off pressure of needs hold-off pressure, the situation that misoperation can not occur or shift to an earlier date, delay;

2, when container inner pressure is lower than barometric pressure, the effect that outside atmosphere can overcome the resorption spring is pushed suck back valve open and is entered in the container, and external and internal pressure is consistent;

3, spool is not fragile, and the life-span is prolonged.

Description of drawings

Fig. 1-the utility model structural representation;

Fig. 2-the utility model is applied to the enforcement illustration of radiator pressure cooking kettle.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1, from the figure as can be seen, container pressure release lid of the present utility model, it is made up of lid 5 and the valve body two parts that are positioned at the lid bottom, valve body comprises valve casing, pressure valve bearing 6, packing seal 7 and suck back valve 8, described valve casing is made up of upper shell 9 and lower house 10, and upper shell 9 and lower house 10 are fixed together by ultrasonic welding, and upper shell 9 is positioned in the lid 5 by the limited step on the lid 5 11.Between lower house 10 and container connecting portion, be provided with seal ring 12.Pressure valve bearing 6 and suck back valve 8 are located in the lower house 10, and pressure valve bearing 6 is positioned at suck back valve 8 tops.Be provided with elastomeric element between pressure valve bearing 6 and the upper shell 9 and between suck back valve 8 and the lower house 10, the elastomeric element of embodiment is a spring, elastomeric element between pressure valve bearing 6 and the upper shell 9 is a pressure valve spring 13, and the elastomeric element between suck back valve 8 and the lower house 10 is a resorption spring 14.Except spring, other any resilient element is all in protection domain described in the utility model, as reed etc.Be provided with compacted packing seal 7 between pressure valve bearing 6 and suck back valve 8, packing seal 7 is positioned on the step 15 that lower house establishes, and makes the packing seal can only be up and can not be descending.Packing seal 7 is isolated into two parts up and down with lower house 10, is provided with pressure relief opening 16 on lower house 10 tops, and pressure relief opening 16 is higher than step 15 positions.Pressure valve bearing 6 and packing seal 7 centers are respectively equipped with pore I17 and the pore II20 that is interconnected, suck back valve 8 centers are provided with guide finger 18, guide finger 18 stretches among pore I17 and the pore II20, and suck back valve 8 is upwards covering pore I20 on packing seal and the pressure valve bearing and pore II17 under the effect of resorption spring 14.

Described lid 5 has the outside thread 19 with the container screw-internal thread fit, and lid 5 outers have and the integrated annular peripheral 4 that is used for the encirclement of vessel port connecting portion of lid.

Fig. 2 is applied to a specific embodiment of radiator pressure cooking kettle for the utility model, and the kettle body that radiator pressure cooking kettle shown in Figure 2 is made up of pressure cooking kettle top box 1 and pressure cooking kettle nowel 2 is provided with this pressure release lid 3 on pressure cooking kettle top box 1.In order to make the kettle body bear higher pressure, in the kettle body, kettle body intracavity is divided into some little cavitys that are interconnected by serial reinforced rib.

Principle of work of the present utility model:

When container inner pressure greatly to a certain degree the time, this pressure acts on packing seal and the suck back valve and the effect that overcomes pressure valve spring up pushes away packing seal, thereby pressure relief opening is communicated with the lower house bottom, gas is got rid of thus, reaches the pressure release purpose;

When container inner pressure is lower than barometric pressure, external pressure enters lower house by pressure relief opening, again by the stomatal action on pressure valve bearing and the packing seal on suck back valve and the power that overcomes the resorption spring suck back valve is down pushed away, because packing seal is subjected to that step on the lower house is spacing can not be descending, make between packing seal and the suck back valve and produce the gap, extraneous gas enters container by this gap, and container inner pressure and external pressure are consistent.

Claims

1, a kind of container pressure release lid, comprise lid (5) and be positioned at the valve body of lid (5) bottom, it is characterized in that: described valve body comprises valve casing, pressure valve bearing (6) and be positioned at the suck back valve (8) of pressure valve bearing below, valve casing is installed on the lid (5), pressure valve bearing (6) and suck back valve (8) are located in the valve casing, pressure valve bearing (6) is positioned on the step (15) that valve casing establishes, be provided with elastomeric element between pressure valve bearing and the valve casing top and between suck back valve and the valve casing bottom, on valve casing, be higher than the step position and be provided with pressure relief opening (16), pressure valve bearing (6) center is provided with pore I (17), and suck back valve (8) covers described pore I (17) under the effect of elastomeric element.

2, container pressure release lid according to claim 1, it is characterized in that: between pressure valve bearing (6) and valve casing step (15), be provided with packing seal (7), packing seal (7) center is provided with the pore II (20) that communicates with pore I, and suck back valve (8) under the effect of elastomeric element is covering the pore on packing seal (7) and the pressure valve bearing (6).

3, container pressure release lid according to claim 1 and 2, it is characterized in that: described valve casing is made up of upper shell that is fixed together (9) and lower house (10), upper shell (9) is positioned in the lid (5) by the limited step (11) on the lid (5), and pressure relief opening (16) is located on the lower house (10).

4, container pressure release lid according to claim 3, it is characterized in that: described lid (5) has the outside thread (19) with the container screw-internal thread fit, and lid (5) outer has and the integrated annular peripheral (4) that is used for the encirclement of vessel port connecting portion of lid.

5, container pressure release lid according to claim 1 and 2, it is characterized in that: described elastomeric element is a spring.