CN203450552U

CN203450552U - Seal cover capable of exhausting air

Info

Publication number: CN203450552U
Application number: CN201320447324.0U
Authority: CN
Inventors: 郑成全
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-25
Filing date: 2013-07-25
Publication date: 2014-02-26
Anticipated expiration: 2023-07-25

Abstract

A seal cover capable of exhausting air comprises a cover body. The seal cover is characterized in that an annular retainer ring is arranged in the middle of the cover body, a movable cover and a base are arranged in the space defined by the annular retainer ring, the movable cover is arranged above the base, a large spring is arranged between the movable cover and the base, the upper portion of the movable cover is located outside the annular retainer ring, the lower portion of the movable cover is always located inside the annular retainer ring, vertical air exhausting grooves are formed in the side face of the lower portion of the movable cover, a gap exists between the lateral wall of the base and the annular retainer ring and the gap allows the lateral wall of the movable cover to pass through; a fixing hole is formed in the position, close to the middle portion, of the upper surface of the base, a vertical shaft of a one-way valve is fixed inside the fixing hole, air exhaust holes are formed in the two sides of the fixing hole, the umbrella-shaped rubber face of the one-way valve is located above the air exhaust holes; an air inlet is formed in the position, located on the side of the annular retainer ring, of the surface of the cover body, an air inlet valve is fixed inside the air inlet through a small spring and vertical air inlet grooves are formed in the side face of a valve cap on the upper portion of the air inlet valve. The seal cover can exhaust air inside a tank, and therefore the guarantee period of articles inside the tank is prolonged.

Description

A kind of seal cover cap that can exhaust

Technical field

The utility model belongs to a kind of container cover of small containers, is specifically related to a kind of seal cover cap that can exhaust.

Background technology

In daily life, for the article in the tank bodies such as tea can, sugar bowl, snack jar, need sealed storage to improve the shelf-life of article, existing sealing means mainly contains three kinds more: the one, and tinning paper on tank mouth; The 2nd, on cover, overlap seal ring; The 3rd, screw thread is directly set outside tank mouth and in lid, allow both by thread seal, connect, wherein tinning paper easily damages with the sealable tank of cover seal ring, the sealable tank laminating density that tank mouth and lid are threaded is strong not, and in screwing process, noise is very large, also, than being easier to wearing and tearing, affects the service life of tank body.But these several modes can only guarantee that at most the air outside tank does not enter in tank, and cannot be by the Bas Discharged in tank, and its sealing effectiveness is all not ideal enough, and then cannot extend shelf-life of article in tank.

Summary of the invention

The utility model is intended to overcome the deficiencies in the prior art, and a kind of seal cover cap that can exhaust is provided, and its reasonable in design, convenient to use can, by the Bas Discharged in tank, extend the shelf-life of article in tank.

Seal cover cap that can exhaust of the present utility model, comprise lid, the technical scheme that adopted is for achieving the above object: described lid middle part is provided with annular retaining ring, in the space that annular retaining ring surrounds, be provided with removable cover and pedestal, removable cover is located at the top of pedestal, be provided with big spring between the two, the top of removable cover is outside annular retaining ring, bottom is all the time in annular retaining ring, and the lower side of removable cover is along being circumferentially provided with equally spacedly vertical air discharge duct, between the sidewall of pedestal and annular retaining ring, there is gap, the sidewall that this gap can hold removable cover passes through, on the sidewall of pedestal near upper end, have first ring connected in star, the lower surface of first ring connected in star is along circumferentially offering equally spacedly the skewed slot of inclination from inside to outside, in groove, be placed with the first seal ring, the diameter of the first seal ring is less than the width of first ring connected in star, and the first seal ring contacts with the inwall of removable cover all the time, the upper surface of pedestal is provided with fixed orifice near middle part, and the vertical shaft of check valve is fixed in fixed orifice, and the both sides of fixed orifice are provided with deflation hole, the top of the umbrella shape rubber face of check valve in two deflation holes, the side of the surface of lid in annular retaining ring offers induction opening, in induction opening, by little spring, is fixed with air inlet valve, and the side of the bonnet on air inlet valve top is along circumferentially offering equally spacedly vertical air inlet duct.

Preferably, described lid offers the second annular groove near lower end, is provided with the second seal ring in the second annular groove.

Preferably, described air inlet valve has the 3rd annular groove near lower end, is provided with the 3rd seal ring in the 3rd annular groove.

Seal cover cap that can exhaust of the present utility model, middle part at lid is provided with annular retaining ring, in annular retaining ring, be provided with removable cover and pedestal, by spring, connect between the two, by pressing removable cover by its inner Bas Discharged, cause the subnormal ambient in removable cover, to the air in tank body is introduced in removable cover, again press afterwards removable cover and will in tank body, enter the Bas Discharged in it, so pressing repeatedly removable cover can be by the Bas Discharged in tank; In the time of need to opening lid, only need press air inlet valve can import extraneous air in lid, thereby makes the inside and outside pressure of tank body consistent, to seal cover cap is taken off, its reasonable in design, simple and efficient to handle, can be by the Bas Discharged in tank, thereby has greatly extended the shelf-life of article in tank.

accompanying drawing explanation:

Fig. 1 is assembly drowing of the present utility model.

Fig. 2 is the structural representation of lid of the present utility model.

Fig. 3 is the structural representation of removable cover of the present utility model.

Fig. 4 is the structural representation of pedestal of the present utility model.

Fig. 5 is the structural representation of air inlet valve of the present utility model.

the specific embodiment:

Below in conjunction with each accompanying drawing, the specific embodiment of the present utility model is described:

This can exhaust seal cover cap, comprise lid 1, described lid 1 middle part is provided with annular retaining ring 2, in the space that annular retaining ring 2 surrounds, be provided with removable cover 3 and pedestal 4, removable cover 3 is located at the top of pedestal 4, be provided with big spring 9 between the two, the top of removable cover 3 is outside annular retaining ring 2, bottom is all the time in annular retaining ring 2, and the lower side of removable cover 3 is along being circumferentially provided with equally spacedly vertical air discharge duct 7, between the sidewall of pedestal 4 and annular retaining ring 1, there is gap, the sidewall that this gap can hold removable cover 3 passes through, on the sidewall of pedestal 4 near upper end, have first ring connected in star 11, the lower surface of first ring connected in star 11 is along circumferentially offering equally spacedly the skewed slot 12 of inclination from inside to outside, in groove, be placed with the first seal ring 13, the diameter of the first seal ring 11 is less than the width of first ring connected in star 11, and the first seal ring 13 contacts with the inwall of removable cover 3 all the time, the upper surface of pedestal 3 is provided with fixed orifice 14 near middle part, and the vertical shaft of check valve 15 is fixed in fixed orifice 14, and the both sides of fixed orifice 14 are provided with deflation hole 16, the top of the umbrella shape rubber face of check valve 15 in two deflation holes 16, the side of the surface of lid 1 in annular retaining ring 2 offers induction opening 5, in induction opening 5, by little spring 10, be fixed with air inlet valve 6, the side of the bonnet on air inlet valve 6 tops is along circumferentially offering equally spacedly vertical air inlet duct 8, the spool of air inlet valve 6 is in induction opening 5, spool overcoat has little spring 10, and little spring 10 is fixed on the inwall of induction opening 5.

During concrete application, lid 1 is covered on the tank body of need sealing, then press removable cover 3, air in removable cover 3 moves down, promoting the first seal ring 13 falls, the air of removable cover 3 inside enters in first ring connected in star 11 by the gap between removable cover 3 inwalls and the sidewall on pedestal 4 tops successively like this, by skewed slot 12, enter up hill and dale in the gap between pedestal 4 and annular retaining ring 2 fast again, finally by the air discharge duct 7 offered in removable cover 3 lower side discharged to outside tank body, cause the subnormal ambient of removable cover 3 inside, then unclamp removable cover 3, removable cover 3 lifts reset under the promotion of big spring 9 recovery elastic force, now the outside a small amount of air of lid 1 can enter by the gap on annular retaining ring 2 and removable cover 3 tops in the gap between pedestal 4 and annular retaining ring 2 successively, enter again in first ring connected in star 11, owing to being provided with the first seal ring 13 in first ring connected in star 11, so the first seal ring 13 upwards lifts under the promotion of air-flow, the gap between removable cover 3 inwalls and pedestal 4 sidewalls is sealed, to prevent that air-flow from entering in removable cover 3, and then the subnormal ambient in maintenance removable cover 3.Now, air pressure in tank body is higher than the air pressure in removable cover 3, deflation hole 16 on air flow pedestal 4 in it, and back down the umbrella shape rubber face of check valve 15 and enter in removable cover 3, and then will by tank body, be entered air in it again discharged to outside by pressing removable cover 3, so repeatedly just can be by the Bas Discharged in tank body.

In the time will opening seal cover cap, only need press air inlet valve 6 downwards, because the bonnet diameter of air inlet valve 6 is slightly less than the diameter of induction opening 5, like this when pressing air inlet valve 6, bonnet can enter in induction opening 5, thereby extraneous air is entered in lid 1 by the air inlet duct 8 in bonnet side wall, and then make the inside and outside air pressure of lid 1 consistent, to lid 1 is taken off on tank body.

Described lid 1 offers in the second annular groove 17, the second annular grooves 17 and is provided with the second seal ring 18 near lower end, to prevent that extraneous air from entering in tank body by the gap between lid 1 and tank body.Described air inlet valve 6 has in the 3rd annular groove 19, the three annular grooves 19 and is provided with the 3rd seal ring 20 near lower end, to prevent that extraneous air from entering in lid 1 by the gap between air inlet valve 6 and induction opening 5.

Claims

One kind can exhaust seal cover cap, comprise lid (1), it is characterized in that: described lid (1) middle part is provided with annular retaining ring (2), in the space that annular retaining ring (2) surrounds, be provided with removable cover (3) and pedestal (4), removable cover (3) is located at the top of pedestal (4), be provided with big spring (9) between the two, the top of removable cover (3) is outside annular retaining ring (2), bottom is all the time in annular retaining ring (2), and the lower side of removable cover (3) is along being circumferentially provided with equally spacedly vertical air discharge duct (7), between the sidewall of pedestal (4) and annular retaining ring (1), there is gap, the sidewall that this gap can hold removable cover (3) passes through, pedestal (4) has first ring connected in star (11) near on the sidewall of upper end, the lower surface of first ring connected in star (11) is along circumferentially offering equally spacedly the skewed slot (12) of inclination from inside to outside, in groove, be placed with the first seal ring (13), the diameter of the first seal ring (11) is less than the width of first ring connected in star (11), and the first seal ring (13) contacts with the inwall of removable cover (3) all the time, the upper surface of pedestal (3) is provided with fixed orifice (14) near middle part, the vertical shaft of check valve (15) is fixed in fixed orifice (14), the both sides of fixed orifice (14) are provided with deflation hole (16), the top of the umbrella shape rubber face of check valve (15) in two deflation holes (16), the side of the surface of lid (1) in annular retaining ring (2) offers induction opening (5), in induction opening (5), by little spring (10), be fixed with air inlet valve (6), the side of the bonnet on air inlet valve (6) top is along circumferentially offering equally spacedly vertical air inlet duct (8).
2. a kind of seal cover cap that can exhaust as claimed in claim 1, is characterized in that: described lid (1) offers the second annular groove (17) near lower end, is provided with the second seal ring (18) in the second annular groove (17).
3. a kind of seal cover cap that can exhaust as claimed in claim 1, is characterized in that: described air inlet valve (6) has the 3rd annular groove (19) near lower end, is provided with the 3rd seal ring (20) in the 3rd annular groove (19).