CN2839768Y

CN2839768Y - Unidirectional air valve of sealing bag

Info

Publication number: CN2839768Y
Application number: CN 200520106374
Authority: CN
Inventors: 苏福隆
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-29
Filing date: 2005-08-29
Publication date: 2006-11-22
Anticipated expiration: 2015-08-29

Abstract

The utility model relates to a unidirectional air valve of a sealing bag. The utility model is characterized in that the air valve (10) is composed of a valve seat (1), a diaphragm (2), a pressure device (3) or (5), and a valve cap (4), wherein the diaphragm (2) which is arranged in the valve seat (1) linearly contacts a circular bulge loop (17); the pressure device (3) or (5) is repressed on the diaphragm (2); the valve cap (4) is screwed on the valve seat (1) and presses the pressure device; the valve cap (4) and the valve seat (1) are not disengaged with each other by the match of hook claws and gaps; the pressure device is controlled to press the diaphragm (2) by controlling the rising and the falling of the valve cap (4). The airtight effects can be realized by the tightly forcing action which is generated between the diaphragm (2) and the circular bulge loop (17) or air in a sealing bag can be exhausted from air holes (14) which are positioned below the diaphragm (2) when the air valve (10) inhales the air. Therefore, the aims of exhausting the air in the sealing bag and preventing the air from flowing back can be realized, and the airtight effect is favorable.

Description

The Non-return air valve of sealing package

Technical field

The utility model relates to a kind of Non-return air valve of sealing package, instigates the outlet valve that is used in vacuum collecting bag aspect especially.

Background technique

Utilize vacuum cleaner air in the bag to be absorbed so that the bag internal volume dwindles to shrink the vacuum collecting bag of storing volume, be the present common technology that is used to store object, for example taken in clothes, cotton-wadded quilt etc. and save the space to reach, suppress bacterium, avoid function such as oxidation.When implementing aforementioned vacuum collecting bag, must air in the bag be got rid of by air valve, and air is no longer bled back, therefore air valve is played the part of in the use of collecting bag epochmaking role, the structure of relevant air valve can refer to Patent Document shown in 1～5, and wherein patent documentation 1 is claimant's preceding case creation, all disclose the structure and the operating principle of one-way exhaust valve in five documents, after exhaust is finished, with loam cake one-way exhaust valve is sealed again.

Patent documentation 1: U. S. Patent bulletin 6,604,634 " RECEIVING BAG WITH ENHANCED AIRTIGHTEFFECT ".

Patent documentation 2: U. S. Patent bulletin 5,931,189 " ONE WAY VALVE FOR USE WITH VACUUMCLEANER ATTACHMENT ".

Patent documentation 3: U. S. Patent bulletin 5,480,030 " REUSABLE, EVACUABLE ENCLOSURE FORSTORAGE OF CLOTHING AND THE LIKE ".

Patent documentation 4: U. S. Patent bulletin 5,450,963 " AIR REMOVAL DEVICE FOR SEALED STORAGECONTAINER ".

Patent documentation 5: U. S. Patent bulletin 6,408,872 " EVACUABLE CONTAINER ONE-WAY VALVEWITH FILTER ELEMENT ".

Aforementioned one-way exhaust valve has following problem points:

1. the gas valve structure shown in the patent documentation 1 is comparatively complicated on making, and manufacturing cost also is higher than general gas So valve is the economic benefit of not meeting.

2. adopt mutual fastening between loam cake shown in the patent documentation 1～3 and the valve seat, loam cake is lifted off on by valve seat needing before air-breathing carrying out, after air-breathing the finishing then with cover encloses on valve seat, this implements to cause easily lid to lose, and the formality of tearing the group loam cake open causes very inconvenience in the operation.

3. aforementioned loam cake and valve seat fasten mutually, give prominence on sealing package again, so sealing package at storehouse, carry or store in the process, loam cake is subject to improper pushing away and hits, pushes and start or come off.

4. when being full of air in the aforementioned sealing package loam cake being closed state again, sealing package then can produce the moment supercharging in the bag if be subjected to external force extruding or bump, when pressure during greater than the sealing intensity of loam cake and valve base chamber, can force the loam cake ejection and meets accident.

5. the barrier film that has soft film in the aforementioned valve seat can force barrier film displacement when loam cake is subjected to external impacts or weight, because buffering or positioning device are set between loam cake and the barrier film, so in a single day stressed excessive will the displacement of barrier film and sealing effect is weakened.

6. the barrier film shown in the patent documentation 1～5 all is silica gel or rubber material, being subject to factors such as climatic impact and shrinkage heat rise causes stiff or deterioration, especially cold belt environment just is easy to generate micro-contraction deformation, causes port sealing full air to be bled back, and causes airtight effect not good.

7. the air valve shown in the

patent documentation

4,5 there is no the loam cake structure, though this has simplified air valve structure, but as long as the barrier film that sealed porosity is used has micro-deformation or damage, will cause port sealing full air to be bled back, in addition air valve also has plasticity life time and barrier film to be subjected to the influence of factors such as hot-cool environment, so change in no loam cake adjustment under the state of degree that barrier film exerted pressure, function of use is still made us and may be deceived.

Novel content

The purpose of this utility model is, solves problem point, provides a kind of and gets rid of bag interior air and prevent air circulation, the Non-return air valve of the excellent sealing package of airtight effect again.

For achieving the above object, the utility model technological means is achieved in that a kind of Non-return air valve of sealing package, it is characterized in that comprising:

One valve seat, be that the valve pool periphery that an end has an opening has the flat board that radially extends and be used for combining with sealing package, the annular convex ring that the base plate central authorities that valve pool is held in addition are provided with positioning hole, are provided with a plurality of pores and give prominence on every side, valve pool outer rim on the flat board has outside thread again, the outside thread top has external diameter greater than externally threaded stop ring, and this stop ring is provided with several breach;

One barrier film, for the pliability film is located in the valve pool, its bottom surface central authorities have protruding bolt and embed in the positioning hole of valve pool base plate;

One pressurization device, an end heads on valve gap, and end heads on barrier film and corresponding on the annular convex ring of valve pool base plate in addition; And

One valve gap screws togather mutually with the outside thread of valve seat, and the end face of valve gap has a plurality of pores, after the inwall root edge is provided with several and can be imported by the default breach of the stop ring of valve seat, radially colludes pawl with the outside thread of valve seat produces the effect that screws togather again.

Wherein: it is that center and vertical the deterring that is the radiation distribution are used guide plate with the positioning hole that the bottom surface of the valve pool of valve seat and flat board is provided with multiple tracks.

Wherein: have annular convex ring under the positioning hole of valve pool and be connected, and the evagination height of bulge loop is lower than the guide plate height with each radial guide plate.

Wherein: a location annular convex ring that is inserted in the pressurization device is set on the barrier film end face.

Wherein: be provided with a location annular convex ring that supplies pressurization device to be inserted at the bottom of the lid of valve gap.

Wherein: collude the pawl inner edge and have internal thread with the external thread spiro fastening of valve pool, it radially protrudes the degree of depth of the degree of depth greater than breach.

Wherein: pressurization device is a spreader spring.

Wherein: pressurization device is transparent wedge, it is the short column body that an external diameter is slightly less than the valve pool internal diameter, radially extend an annular lip sheet at short column body upper end open edge, the reinforced ribs that has decussation in the lower ending opening, short column body periphery also is provided with the fluting that a plurality of hollow outs are arranged again.

Wherein: the bottom surface at reinforced ribs is provided with the pressure ring that protrudes down, and presets the apical ring that protrudes on the peritreme of valve seat positioning hole, and pressure ring is corresponding up and down with apical ring.

Wherein: indicate the mark of two different colours on the stop ring surface of valve seat, and the valve gap end face is provided with the perforation on corresponding aforementioned two marks.

Wherein: the valve pool outer wall of valve seat be provided with the Luo Gou of breach corresponding matching replacing outside thread, Luo Gou be oblique again up and down two ends be level and two ends all are stop end.

Enforcement of the present utility model can be obtained following effect:

1. operating valve cap 4 just can be controlled the size of exerting pressure of

pressurization device

3 or 5 pairs of barrier films 2 at the adjustable height of valve seat 1, and descending as valve gap 4 just to make

pressurization device

3 or 5 compressing barrier films 2, makes 17 splendid sealing effects of generation of barrier film 2 and annular convex ring; Otherwise, after rising, valve gap 4 just no longer presses on

pressurization device

3 or 5, therefore

pressurization device

3 or 5 is understood together buoyance lift with barrier film 2 in breathing process, and pore 14 openings are sucked out for air in the bag, and when air-breathing stopping, being negative pressure state in the bag and make

pressurization device

3 or 5 and barrier film 2 restore, and sealed porosity 14 avoids air to bleed back again, produces unidirectional non-return effect.

2. the annular convex ring 17 on valve pool 12 base plates and barrier film 2 bottom surfaces are linear and contact, and

pressurization device

3,5 is pressed on the barrier film 2 corresponding annular convex ring 17 again, so barrier film 2 is under pressurized and the very airtight involution effect of 17 generations of annular convex ring, the long-time use down still effectively kept.

3. barrier film 2 is soft film, but keeps seal actions with the annular convex ring 17 of valve pool 12 all the time under the compressing of

pressurization device

3 or 5, so the influence of environment such as be not subjected to that shrinkage heat rises; Though and barrier film 2 is in that carry out when air-breathing can buoyance lift, beneath protruding bolt 21 still remains in the positioning hole 13 of valve pool 12, avoids barrier film 2 to produce displacements.

4. the combination of four assemblies reaches fast quite easily, and especially barrier film 2 can be placed in the valve pool 12 of valve seat 1 easily with

pressurization device

3,5, and seals rapidly with valve gap 4, is beneficial to quick assembling.

5. the structure of four assemblies is all very simple and easy simple, and this not only is easy to make and produces, and more can consider being beneficial to dealer's production down in financial cost.

The valve pool of aforementioned valve seat 1 and dull and stereotyped bottom surface are provided with the vertical guide plate 15 of radial distribution, this can be when sealing package carries out the suction and discharge operation following bag of baffle seal bag, avoid play bag to seal the beneath pores 14 of valve pool 12 and cause inspiratory dyspnea.

Have annular convex ring 16 under the positioning hole 13 of aforementioned valve pool 12 and be connected with each radial guide plate 15, its evagination height also is lower than guide plate 15 height, and this can be avoided positioning hole 13 sealed bag sealings when the suction and discharge operation.

Annular convex ring 22 on aforementioned barrier film 2 end faces, after making barrier film 2 and

pressurization device

3 or 5 cooperating, barrier film 2 is not easy to produce dystopy.

Be provided with annular convex ring 43 at the bottom of the lid of aforementioned valve gap 4, after making valve gap 4 and

pressurization device

3 or 5 cooperating, pressurization device is not easy to produce dystopy.

Aforementioned collude pawl 42 radially protrude the degree of depth greater than the degree of depth of stop ring breach 191 time, collude pawl 42 from breach 191 be forced into the back just can't another mistake to withdrawing from, can not come off even valve gap 4 unscrews also.

When aforementioned pressurization device 3 is spreader spring, can impose bigger spring power to barrier film 2, the effect of therefore holding one's breath is better.

When aforementioned pressurization device 5 is transparent wedge, after valve gap 4 unscrews rising, though and the big spacing of 19 generations of the stop ring of valve seat 1, but this spacing has the short column body 50 of pressurization device 5 and lip sheet 51 to seal, so sucking pipe 103 can make air in the sealing package 100 fast by Non-return air valve 10 when air-breathing, and can not suck the gas that the perforation 44 by valve gap 4 imports when air-breathing yet.

The bottom surface of aforementioned reinforced ribs 53 is provided with the pressure ring 54 that protrudes down down, and behind the default apical ring 131 that protrudes on the peritreme of valve seat 1 positioning hole 13, corresponding up and down by pressure ring 54 and apical ring 131, can produce cramping effect up and down to barrier film 2 middle sections, to prevent that barrier film 2 middle sections from heaving up or to shrink down.

The mark of two different colours of stop ring 19 surperficial upward signs of aforementioned valve seat 1 192,193 o'clock can be corresponding mutually with the perforation 44 that valve gap 4 end faces are provided with, to allow the user just can judge the open and-shut mode of Non-return air valve 10 by perusal.

The valve pool 12 outer wall settings of aforementioned valve seat 1 and the spiral shell ditch 181 of breach 191 corresponding matching be with after replacing outside thread, oblique spiral shell ditch 181 can for valve gap 4 collude pawl 42 rotation and liftings, and can horizontally rotate when going to up and down two ends, and can stop the rotation when terminal to two.

Description of drawings

Fig. 1 is the three-dimensional exploded view that the utility model Non-return air valve first is implemented kenel.

Fig. 2 is the three-dimensional exploded view of Fig. 1 Non-return air valve.

Fig. 3 analyses and observe for the solid of Fig. 1 valve seat.

Fig. 4 is the reverse side stereogram of Fig. 1 valve seat.

Fig. 5 analyses and observe for the solid of Fig. 1 barrier film.

Fig. 6 is the reverse side stereogram of Fig. 1 barrier film.

Fig. 7 analyses and observe for the solid of Fig. 1 valve gap.

Fig. 8 is the reverse side stereogram of Fig. 1 valve gap.

Fig. 9 is the whole-cutaway view that the utility model Non-return air valve first is implemented kenel.

Figure 10 is the whole-cutaway view before the utility model first is implemented kenel valve seat and valve gap combination.

Figure 11 is used in the schematic representation of sealing package for the utility model Non-return air valve.

Figure 12 is that the utility model Non-return air valve first is implemented the full sectional drawing that kenel combines with sealing package.

Figure 13 implements kenel for the utility model Non-return air valve first and carries out full sectional drawing when air-breathing.

Figure 14 implements kenel for the utility model Non-return air valve first and finishes full sectional drawing after air-breathing.

Figure 15 is that the utility model Non-return air valve first is implemented the full sectional drawing after kenel screws valve gap.

Figure 16 is the three-dimensional exploded view that the utility model Non-return air valve second is implemented kenel.

Figure 17 is the three-dimensional combination figure that the utility model Non-return air valve second is implemented kenel.

Figure 18 is the sectional view that the utility model Non-return air valve second is implemented kenel.

Figure 19 implements kenel for the utility model Non-return air valve second and carries out schematic representation when air-breathing.

Embodiment

Following according to the embodiment shown in the drawing describe in detail as after.

First example

As shown in Figure 1, be the first example three-dimensional exploded view of the present utility model, disclose among the figure that Non-return air valve 10 is located in the valve seat 1 by a valve seat 1, one and ride over pressurization device 3, on the barrier film 2 with the annular convex ring 17 linear barrier films 2, that contact and be screwed together on the valve seat 1 and the valve gap 4 of suppressing pressurization device is formed, the outward appearance after the combination as shown in Figure 2.

The structure of aforementioned valve seat 1 as shown in Figures 3 and 4, valve seat 1 is that valve pool 12 peripheries that an end has an opening have the flat board 11 that radially extends and combine with sealing package, the valve pool 12 base plate central authorities of end in addition is provided with positioning hole 13, then is provided with a plurality of pores 14 and the outstanding bulge loop 17 of an annular on every side, valve pool 12 outer rims on aforementioned again dull and stereotyped 11 have outside thread 18, outside thread 18 tops have the stop ring 19 of external diameter greater than outside thread 18, and this stop ring is provided with several breach 191 (being depicted as four as drawing); Secondly, valve pool 12 bottoms are provided with a plurality of vertical guide plates 15 that deter usefulness that radially distribute with positioning hole 13 centers, have annular convex ring 16 again under the positioning hole 13 to be connected with guide plate 15, and the evagination height of this bulge loop 16 is less than guide plate 15 height.

The structure of aforementioned barrier film 2 such as Fig. 5 and shown in Figure 6, barrier film 2 are located in the valve pool 12 for pliability glue material, and its bottom surface central authorities have protruding bolt 21 and can embed in the positioning hole 13 of aforementioned valve pool 12 base plates (can join Fig. 9).

Aforementioned pressurization device 3 is a spring, be an end head on valve gap 4 in addition end then head on barrier film 2 and the corresponding elastic buffering mechanism that on the annular convex ring 17 of valve pool 12 base plates, (can join Fig. 9).

The structure of aforementioned valve gap 4 as shown in Figures 7 and 8, the end face of valve gap 4 has a plurality of exhaust ports 41, the inwall root edge is provided with several radially outstanding pawls 42 that colludes, the default breach 191 of the stop ring that position and aforementioned valve seat 1 are set 19 that collude pawl 42 are and are oppositely arranged, when colluding pawl 42 after breach 191 axial importings, can produce the effect that screws togather with outside thread 18 by colluding pawl 42, so rotation valve gap 4 just can produce the spiral lifting effect on valve seat 1, and collude pawl 42 and can be easy to but be not easy by breach 191 derivation by breach 191 importings.

As shown in Figure 9, disclose the connection relationship after valve seat 1, barrier film 2, pressurization device 3 and valve gap 4 make up among the figure, barrier film 2 is arranged in the valve pool 12, and goes into beneath protruding bolt 21 in the positioning hole 13 of valve pool 12 base plates and locate, barrier film 2 bottom surfaces more with base plate on annular convex ring 17 be linear and contact; Valve gap 4 is to screw togather with the outside thread 18 that colludes on pawl 42 and the valve seat 1, after valve gap 4 and valve seat 1 screw togather, pressurization device 3 is promptly limited to and is compressed between valve gap 4 and the barrier film 2, because having annular convex ring 43 under the valve gap 4 is inserted in for pressurization device 3, be inserted in the pressurization device 3 and have annular convex ring 22 on barrier film 2 tops, so can produce very stable locating effect between valve gap 4, pressurization device 3 and barrier film 2 threes; The lower end of pressurization device 3 is corresponding on the annular convex ring 17 of valve pool 12 base plates again, so pressurization device 3 can impel 17 of barrier film 2 and annular convex rings to produce very airtight effect when pressing on the barrier film 2.

As shown in figure 10, before valve gap 4 desires and valve seat 1 make up, valve gap 4 must mats collude pawl 42 and the breach 191 of stop ring 19 align cooperate after axially importing, because that colludes pawl 42 radially protrudes the radial depth of the degree of depth greater than aforementioned stop ring 19 breach 191, therefore colluding pawl 42 just can't be again by breach 191 reverse withdrawing from after breach 191 imports, even valve gap 4 is the state of unscrewing and also can break away from valve seat 1, thus, cause the shortcoming generation of loss after just avoiding valve gap 4 to come off; Utilize again valve gap 4 on valve seat 1 forward or counter-rotating, all can control the elasticity of pressurization device 3, and then make between barrier film 2 and valve pool 12 base plates and to produce close gas or venting function, this in subsequent drawings with further specified.

As shown in figure 11, for the utility model Non-return air valve 10 uses on sealing package 100, this sealing package 100 can be used as the bag that collecting bag or other antiseepage use and uses.

As shown in figure 12, Non-return air valve 10 and the combination of sealing package 100 are that flat board 11 end faces with valve seat 1 are connected with the high frequency technology of fusing with bag 101 bottom surfaces of going up of sealing package 100, in conjunction with after have only the outside thread 18 of valve seat 1 epimere and valve gap 4 outer being exposed at outside the sealing package 100 that screw togather with outside thread 18, because the aforementioned enclosing cover 4 that illustrated can not produce disengaging with valve seat 1, so also can not come off even enclosing cover 4 is subjected to external force collision.

Secondly, Figure 12 also discloses, when desire is carried out suction operation to Non-return air valve 10, must be earlier with valve gap 4 reverse unscrewing, spacing between valve gap 4 and the barrier film 2 is increased, pressurization device 3 relax with reduction to the exerting pressure of barrier film 2, promptly can carry out air-breathing operation after taking off step before finishing.

As shown in figure 13, when the sucking pipe 103 of suction means (not shown) be socketed in valve gap 4 peripheral and corresponding be located at sealing package 100 go up flat board 11 under the bag 101 time, can carry out air-breathing operation; A bag interior air content is reduced the air sucking-off in the sealing package 100 by this, to reach the state that is close to vacuum.When carrying out when air-breathing, barrier film 2 can be together more than the buoyance lift 2mm with pressurization device 3, barrier film 2 is no longer contacted with annular convex ring 17 on valve pool 12 base plates, at this moment the air in the bag, is close to till the vacuum in bag by sucking pipe 103 sucking-offs through the exhaust port 41 of the pore 14 of valve pool 12 and valve gap 4 under powerful getter action.Aforementioned again when carrying out air-breathing operation, the annular convex ring 16 under the valve seat 1 under radial guide plate 15 and the positioning hole 13 is following bag 102 and bedding and clothing of baffle seal bag 100 effectively, to avoid pore 14 by blocking, air-breathing operation can be finished smoothly.

As shown in figure 14, after air-breathing finishing, can be with suction pipe 101 by removing on the valve gap 4, this moment, barrier film 2 promptly produced unidirectional non-return effect because of the suction function in atmospheric pressure and the sealing package 100 is covered on rapidly on the annular convex ring 17, in other words, barrier film 2 can automatically reduce when air-breathing operation stops and pasting on annular convex ring 17, and ambient air can't be entered in the sealing package 100.

As shown in figure 15, after finishing abovementioned steps, the operator is screwed down valve gap 4 again, to shorten the spacing between valve gap 4 and the barrier film 2, spring power behind pressurization device 3 pressurizeds is increased, so that barrier film 2 is carried out bigger exerting pressure, make barrier film 2 and annular convex ring 17 between sealing effect stronger, bleed back effectively to prevent air.

Second example

As Figure 16 and shown in Figure 17, be respectively second example three-dimensional exploded view and the constitutional diagram of the present utility model, this example is different with first example, and to be in pressurization device 5 be not spring, but seat is neutralized in moulding of hard transparent, it is configured to the short column body 50 that an external diameter is slightly less than valve pool 12 internal diameters, radially extend an annular lip sheet 51 to head on valve gap 4 at short column body 50 upper end open edges, the lower end then heads on barrier film 2, and lower ending opening more can import location (can join Figure 18) for the annular convex ring 22 of barrier film 2 end faces, and short column body 50 peripheries also are provided with the fluting 52 that a plurality of hollow outs are arranged again; Secondly, the reinforcement that is provided with decussation in short column body 50 lower ending openings helps 53, the circular pressure ring 54 that protrudes down is set under the bottom surface of reinforced ribs 53, this pressure ring 54 and with valve seat 1 positioning hole 13 peritremes on default protrusion apical ring 131 be corresponding matching up and down, this pressure ring 54 and apical ring 131 can produce cramping effect up and down (disclosing as Figure 18) to the middle section of barrier film 2, make the middle section of barrier film 2 can not heave up or down in contract, and remain formation state.In addition, the valve pool 12 outer wall settings of valve seat 1 and the spiral shell ditch 181 of breach 191 corresponding matching, with the outside thread 18 that replaces aforementioned first example, spiral shell ditch 181 be oblique again up and down two ends be level and two ends all are stop end, so the pawl 42 that colludes of valve gap 4 root edges can rotation and lifting in spiral shell ditch 181, just can only horizontally rotate during two ends about in the of 181 but go to the spiral shell ditch, when holding to the greatest extent, just stop the rotation; Moreover, the colluding pawl 42 and can be easy to import and but be difficult for deriving of valve gap 4 by breach 191 by breach 191.

As shown in figure 18, after Non-return air valve 10 combinations are finished, the lip sheet 51 of transparent pressurization device 5 is between valve gap perforation 44 and valve seat stop ring 19, at this moment the root edge of pressurization device 5 then pressing barrier film 2, and barrier film 2 is enclosed on the annular convex ring 17, so Non-return air valve 10 is to be in closed condition, can't air inlet or exhaust.

As shown in figure 19, when valve gap 4 being unscrewed to carry out when air-breathing, barrier film 2 can be together more than the buoyance lift 2mm with pressurization device 5, barrier film 2 is no longer contacted with annular convex ring 17 on valve pool 12 base plates, at this moment the air in the bag by sucking pipe 103 sucking-offs, is close to till the vacuum in bag through the exhaust port 41 of the fluting 52 of pressurization device 5, valve gap 4 through the pore 14 of valve pool 12 bottoms under powerful getter action.Again, above-mentioned valve gap 4 is after unscrewing rising, though and the big spacing of 19 generations of the stop ring of valve seat 1, but this spacing has the short column body 50 of pressurization device 5 and lip sheet 51 to seal, so sucking pipe 103 can make air in the sealing package 100 fast by Non-return air valve 10 when air-breathing, and can not suck the gas that the perforation 44 by valve gap 4 imports when air-breathing yet.

Secondly, also disclosing the mark 192,193 that indicates two different colours on stop ring 19 surfaces of valve seat 1 respectively in Figure 16, is green as mark 192, and mark 193 be a redness, keep several angle (as 90 °) between two marks, this angle also is the maximum angle of swing of valve gap 4 on valve seat 1; Again, in order to cooperate with aforementioned two marks 192,193, the end face of valve gap 4 must be set up a perforation 44.After Non-return air valve 10 combinations are finished (as Figure 17), only be situated between between perforation 44 and stop ring 19 end faces transparent lip sheet 51 (ginseng Figure 18) is arranged, because lip sheet 51 is to be transparent, so the user bored a hole 44 o'clock with perusal, can be observed the color of mark 192 or 193 by transparent lip sheet 51, this can be convenient to determine the tightness that screws togather of valve gap 4 and valve seat 1, for example bore a hole and represent to be in the state of closing by Non-return air valve 10 when showing green mark 192 in 44 (valve gap 4 has screwed tight, can't air inlet or exhaust), represent when showing red symbol 193 that Non-return air valve 10 is in that (valve gap 4 does not screw tight in opening state, but air inlet or exhaust), therefore just can judge the open and-shut mode of Non-return air valve 10 by perusal, this enforcement is a kind of easy means of Non-return air valve 10 user modes to remind the user to note of judging.

More than, system is elaborated according to the utility model is graphic, and only the dealer can carry out various changes in the scope that does not surmount the utility model main idea, only its change or revised enforcement kenel, only otherwise exceed the impartial main idea scope of the utility model, all should contain and belong to the utility model category.

Claims

1. the Non-return air valve of a sealing package is characterized in that comprising:

2. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: the valve pool of valve seat and dull and stereotyped bottom surface are provided with multiple tracks to be the center with the positioning hole and to be vertical the deterring that radiation distributes and to use guide plate.

3. the Non-return air valve of sealing package as claimed in claim 2 is characterized in that: have annular convex ring under the positioning hole of valve pool and be connected with each radial guide plate, and the evagination height of bulge loop is lower than the guide plate height.

4. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: a location annular convex ring that is inserted in the pressurization device is set on the barrier film end face.

5. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: be provided with a location annular convex ring that supplies pressurization device to be inserted at the bottom of the lid of valve gap.

6. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: collude the pawl inner edge and have internal thread with the external thread spiro fastening of valve pool, it radially protrudes the degree of depth of the degree of depth greater than breach.

7. the Non-return air valve of sealing package as claimed in claim 1, it is characterized in that: pressurization device is a spreader spring.

8. the Non-return air valve of sealing package as claimed in claim 1, it is characterized in that: pressurization device is transparent wedge, it is the short column body that an external diameter is slightly less than the valve pool internal diameter, radially extend an annular lip sheet at short column body upper end open edge, the reinforced ribs that has decussation in the lower ending opening, short column body periphery also is provided with the fluting that a plurality of hollow outs are arranged again.

9. the Non-return air valve of sealing package as claimed in claim 8 is characterized in that: the bottom surface at reinforced ribs is provided with the pressure ring that protrudes down, and on the peritreme of valve seat positioning hole the default apical ring that protrudes, pressure ring is with corresponding about apical ring is.

10. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: indicate the mark of two different colours on the stop ring surface of valve seat, and the valve gap end face is provided with the perforation on corresponding aforementioned two marks.

11. the Non-return air valve of sealing package as claimed in claim 1 is characterized in that: the valve pool outer wall of valve seat be provided with the Luo Gou of breach corresponding matching replacing outside thread, Luo Gou be oblique again up and down two ends be level and two ends all are stop end.