CN2620678Y

CN2620678Y - Vacuum fresh-keeing cover with valve

Info

Publication number: CN2620678Y
Application number: CN 03246480
Authority: CN
Inventors: 俞永昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-17
Filing date: 2003-04-17
Publication date: 2004-06-16
Anticipated expiration: 2013-04-17

Abstract

A vacuum fresh keeping cover with a valve, a vessel sealing cover with a valve connected with a vacuum pump. The utility model is used to perform the vacuum fresh keeping to the objects in the vessel. The utility model comprises a cover body and a sealing ring. The utility model is characterized in that a valve that can vacuumize a covered vessel or destroy the vacuum conveniently is arranged on the cover body, the valve comprises a valve seat and a valve core, wherein a connecting pipe connected with the vacuum pump is arranged on the valve seat, the valve core is connected on the valve seat thought a screw thread and connected with a hand wheel through a valve rod fixed and connected with the valve seat, and a stuffing box pressed by a pressing cover is arranged between the valve rod and the valve seat. The vacuum degree of the covered vessel is kept through the valve arranged on the cover body of the utility model, the object in the box is guaranteed to be fresh, at the same time the hand wheel can be rotated or reversely rotated to open or close the valve to vacuumize the vessel or open the cover, therefore the operation is convenient; the valve connected in the utility model is a common standardized product, the quality is stable and reliable, the valve can be used repeatedly, therefore the service life of the vacuum fresh keeping cover with the valve of the utility model is long, the manufacture is convenient and the cost is low.

Description

The vacuum freshness retaining lid of band valve

Technical field

The utility model relates to a kind of seal cover cap of container.Especially a kind of have one can with the container cover of vacuum pump bonded assembly valve.It is used for the content of institute's lid container is carried out vacuum freshness retaining.

Background technology

Chinese patent 92204018.4 disclosed " vacuum freshness retaining container cover ", it is made up of lid, seal ring and one-way sealing plug, wherein the lid periphery has inside and outside two circles ring-type edge vertically downward, seal ring is entrenched in the formed circular groove of two edges in the form of a ring, sealing plug is cylindrical, and there is a straight joint up and down at its center.When vacuum freshness retaining, directly insert straight joint with the air tube of vacuum pump, bleeding finishes then extracts air tube; Under in vacuum, open container cover, then will strut the straight joint on the sealing plug, make the air admission container earlier.Its shortcoming is: 1) straight joint at sealing plug center is to seal voluntarily by the elasticity of its material in the vacuum freshness retaining process, its obturation effect depends on the character etc. of design, build guality and the material of straight joint, and will plug the aging of the increasing of number of times, material and constantly descend along with air tube, so its vacuum freshness retaining effect be unreliable, service life is also shorter; 2), strut relatively difficulty of straight joint, under vacuum so it is also cumbersome to uncap because of sealing is plugged with certain height; 3) two loop edges of lid periphery not only make cover body structure complicated, and seal ring is changed in inconvenience.

Summary of the invention

The utility model is to overcome the shortcoming that exists in the above-mentioned prior art, and a kind of vacuum freshness retaining lid of band valve of the degree of vacuum that can continue to guarantee institute's lid container is provided, and makes it have characteristics such as simple in structure, easy to use, long service life.

The vacuum freshness retaining lid of the utility model band valve, it contains lid and seal ring, be characterized in: a valve that can conveniently be vacuumized or destroy vacuum by lid container is housed on the lid, this valve includes valve seat and spool, wherein having one on the valve seat can make it and vacuum pump bonded assembly take over, spool is being threaded on the valve seat and by being connected a handwheel with its affixed valve rod, and valve rod is with having the compression gland that is compressed by gland between the valve seat.

The vacuum freshness retaining lid of the utility model band valve has a circle and can prevent that foreign object from touching the shirt rim of seal ring on the neighboring of its lid.

The vacuum freshness retaining lid of the utility model band valve, its valve is connected in the centre hole of lid by the thread segment that is arranged on the valve seat bottom, and has packing seal on the joint face.Its handwheel is connected with chimeric with valve rod, and with screw lock.

The beneficial effects of the utility model are: 1) lid of the present utility model is after being equipped with valve, because of spool airtight reliable with the valve seat valve opening, so it can guarantee to be realized the vacuum freshness retaining of its internal memory thing reliably by the degree of vacuum of lid container; 2) it by the rotating handwheel realize to container vacuumize or air inlet is uncapped, so easy to use; 3) institute's bonded assembly valve is a kind of general and standardized product in the utility model, and its steady quality is reliable, repeat to open and close often, so the long service life that the vacuum freshness retaining of the utility model band valve covers; 4) the lid periphery only is provided with a circle shirt rim, makes it not only simple in structure, but also allows the internal diameter of tegmentum container closure face and the internal diameter of seal ring to have error, so it has bigger applicability; 5) because of the valve in the utility model can be an outsourcing piece, so easily manufactured and cost is low.

Description of drawings

Fig. 1 is the main cutaway view of the vacuum freshness retaining lid of the utility model band valve;

Fig. 2 is that A among Fig. 1 is to view.

Label declaration among the figure: 1-seal ring; The 2-lid; The 2a-shirt rim; The 3-nut; The 4-valve; 4a-takes over; The 4b-screw; The 4c-handwheel; The 4d-concave and convex stripe; The 4e-valve rod; The 4f-gland; The 4g-compression gland; The 4h-valve seat; The 4i-spool; The 4j-packing seal; The 5-container.

The specific embodiment

The vacuum freshness retaining lid of embodiment 1. present embodiment band valves, its structure can see from Fig. 1 and Fig. 2 that it contains lid 2, seal ring 1 and the valve 4 at the lid central mounting.This valve includes valve seat 4h and spool 4i, wherein has one on the valve seat and can make it and vacuum pump (being represented in the drawings) bonded assembly take over 4a; Spool is to be threaded on the valve seat and by being connected a handwheel 4c with its affixed valve rod 4e; Valve rod is with having the compression gland 4g that is compressed by gland 4f, to guarantee the sealing of valve rod on valve seat between the valve seat.

When using the vacuum freshness retaining lid of present embodiment band valve, as long as it is put on the open end of the container 5 (representing with long and two-short dash line among Fig. 1) that is complementary with its seal ring, rotate handwheel simultaneously with shutoff valve 4, by taking over a 4a manually operated vacuum pump of connection (being represented among the figure) and back and forth bleeding, can realize vacuum freshness retaining after bleeding again to container contents.If valve 4 is in closed condition, then can keep the degree of vacuum of container all the time.As want article in the extractor, and then as long as rotate handwheel, so that spool 4i is upwards, separate with the valve opening of valve seat, at this moment outside air is promptly from taking over 4a, and enters container by valve opening, and lid just can be opened like a cork.

Handwheel 4c is connected with chimeric with valve rod 4e, and locks with screw 4b, thereby guarantees the synchronous rotation of handwheel and valve rod; Also can have the skidproof concave and convex stripe 4d of energy on the periphery wall of handwheel, with convenient rotation.。

Different is for the vacuum freshness retaining of embodiment 2. present embodiment band valves lid and embodiment 1: have one on its lid neighboring and enclose and can prevent that foreign object from touching the shirt rim 2a of seal ring, effectively preventing seal ring because of contaminated or collided by foreign object and to influence service life, even the degree of vacuum in the destructor.

Different is for the vacuum freshness retaining of embodiment 3. present embodiment band valves lid and embodiment 1: its valve is connected in the centre hole of lid by thread segment and the nut 3 that is arranged on bottom the valve seat, and has packing seal 4j on the joint face.Its handwheel 4c is connected with chimeric with valve rod, and locks with screw 4b.

Claims

1, a kind of vacuum freshness retaining lid with valve, it contains lid (2) and seal ring (1), it is characterized in that: a valve (4) that can conveniently be vacuumized or destroy vacuum by lid container is housed on the lid, this valve includes valve seat (4h) and spool (4i), wherein having one on the valve seat can make it and vacuum pump bonded assembly take over (4a), spool is being threaded on the valve seat and by being connected a handwheel (4c) with its affixed valve rod (4e), and valve rod is with having the compression gland (4g) that is compressed by gland (4f) between the valve seat.

2, the vacuum freshness retaining of band valve according to claim 1 lid is characterized in that: have the shirt rim (2a) that a circle can prevent to touch because of foreign object seal ring on the neighboring of said lid.

3, the vacuum freshness retaining of band valve according to claim 1 and 2 lid is characterized in that: said valve is connected in the centre hole of lid by the thread segment that is arranged on the valve seat bottom, and has packing seal (4j) on the joint face.

4, the vacuum freshness retaining of band valve according to claim 1 and 2 lid, it is characterized in that: said handwheel (4c) is connected with chimeric with valve rod (4e), and locks with screw (4b).

5, the vacuum freshness retaining of band valve according to claim 3 lid, it is characterized in that: said handwheel (4c) is connected with chimeric with valve rod (4e), and locks with screw (4b).