CN207090106U - The piston type BB frost cases of novel belt check valve structure - Google Patents

Abstract

The utility model discloses a kind of piston type BB frost cases of novel belt check valve structure, it includes bottle, bloom device, inner bag and press device, bottle is provided with top end opening, bottom end opening and cavity volume, bloom device is installed at the top end opening of bottle, inner bag is placed in the cavity volume of bottle, inner bag is provided with neck, ring sidepiece and bottom, and by neck, ring sidepiece and bottom surround the receiving blister cavities for being formed and can storing BB frosts, the neck opening of inner bag is connected with the bloom mouth of bloom device, press device, which is fixedly installed in bottle cavity volume, to be corresponded to close to the position of bottle bottom end opening, press device includes piston barrel, piston, piston rod, press section, helical spring and check valve element, it is simple in construction, it is easy to operate, reduce the manufacturing cost of BB frost Packaging Bottles；Inner bag and press device are set using in bottle intracavity, the BB frosts produced by press device in atmospheric pressure extruding inner bag, which spray to smear, to be used, convenient and practical.

Description

The piston type BB frost cases of novel belt check valve structure

Technical field

A kind of cosmetics containers device is the utility model is related to, it particularly relates to a kind of piston with check valve structure Formula BB frost cases.

Background technology

With the progress of science and technology, the lifting of quality of life, maintenance pay attention to day by day of the people for body skin, therefore drive Makeups industries flourish.It is required to user can be easy to use by the installing of container for BB frosts, thus it is relevant Container or Packaging Bottle (bag) exploitation for housing BB frosts arise at the historic moment also with the development of the makeups industry such as BB frosts.

The container of common BB frosts is typically push type liquid container on the market, as shown in figure 11, the liquid container 90 Include a shower nozzle 91, a body 92 and a lid 93, the shower nozzle 91 is installed in the top of body 92, and the lid 93 lid is set In the lower section of body 92.The wherein body 92 is internally provided with a piston 921, and the outer rim of the piston 921 is interior with body 92 Wall be in contact and can relatively sliding motion, and formed between the shower nozzle 91 and the piston 921 above the body 92 One liquid accommodation space 94, used for skin care products or cosmetics are accommodating.

The shower nozzle 91 extends downward with a pipette 911, and liquid accommodation space is immersed in the bottom of the pipette 911 In 94 skin care products or cosmetics, and the lid 93 is equipped with through hole 931, when user is pressed shower nozzle 91, maintenance Product or cosmetics, which are drawn by pipette 911 and sprayed to take out for user by shower nozzle 91, to be used, while as liquid houses The ejection of skin care products or cosmetics in space 94, the piston 921 can be produced via the introduced gas of the through hole 931 of lid 93 Raw atmospheric pressure effect, raises piston 921 and moves up, and then the liquid level of skin care products or cosmetics is raised to imbibition The height that pipe 911 can be drawn, with this so that after liquid container 9 presses use every time, the skin care products in liquid accommodation space 94 Or cosmetics can be raised by piston 921 and moved up, skin care products or cosmetics in help liquid accommodation space 94 can be suitable Profit is removed use, until piston 921 is raised untill the top of body 92, that is, has represented skin care products in bottle or cosmetics Run out, ejection can not be pressed again.

But the liquid container 90 of prior art itself in order that the internal face of piston 921 and body 92 can successfully Relative sliding Motion, and the material of the piston 921 is limited to, it can not provide and be sterilized with more than 50 DEG C of high temperature, therefore liquid must add Add antioxidant and preservative to avoid bacterium from multiplying, and certainly existed between the piston 921 and the internal face of body 92 seamed Gap, therefore, skin care products or cosmetics in liquid accommodation space 94 be easily from the internal face of the outer rim of piston 921 and body 92 it Between gap leakage outflow, cause the waste of skin care products or cosmetics；And virus outside liquid container 90, bacterium also easily from Foregoing gap enters in the skin care products or cosmetics of liquid accommodation space 94, causes skin care products or cosmetics to be polluted, if making User is ignorant and is continuing with, it would be possible to produces harm to body.In addition, the user of liquid container 90 of prior art Used as disposable container, therefore the setting of liquid container 90 its labyrinth is used only once to abandon and made Useless, the undoubtedly covert wasting of resources, therefore the necessity for thering is it to improve.

Utility model content

Deficiency for more than, the utility model provide one kind and are easy to user to take BB frosts emulsion to apply using pressing mode Smear use, effectively prevent BB frost emulsion contacts air in Packaging Bottle and oxidation deterioration occurs, pollution is mixed into by outside bacterium, Can be repeated several times utilize with reduce the unnecessary wasting of resources, meet environmental consciousness novel belt check valve structure piston type BB frost cases, it includes bottle, bloom device, inner bag and press device, and the bottle is provided with top end opening, bottom is opened Mouthful and can be as the cavity volume of accommodation space, and cavity volume is connected with top end opening and bottom end opening, the bloom device It is installed at the top end opening of bottle, the inner bag is placed in the cavity volume of the bottle, and the inner bag is provided with neck Portion, ring sidepiece and bottom, the neck is located at the upper and lower both sides of ring sidepiece with bottom, and neck, ring sidepiece and bottom are in Integrally formed cystic structures are set, and are surrounded by neck, ring sidepiece and bottom and formed the receiving capsule that can store BB frosts Chamber, the neck opening of the inner bag are connected with the bloom mouth of bloom device, and the bottom of the inner bag is in closed state；Institute Stating press device and being fixedly installed in bottle cavity volume to correspond to includes work close to the position of bottle bottom end opening, the press device Plug tube body, piston, piston rod, press section, helical spring and check valve element, the lateral wall of the piston barrel and the inner side of cavity volume Being fixedly connected for hermetic seal type between wall, the piston barrel side wall are connected provided with least one with the outside atmosphere of bottle Logical air admission hole, the piston barrel side wall are provided with the steam vent being connected with the cavity volume, are provided with the steam vent One-way exhaust valve；The piston can be slippingly arranged in the hollow cavity of the piston barrel up and down relatively, the piston rod One end be fixedly connected with the piston, the another end of the piston rod is fixedly connected through the through hole of piston barrel with the press section, The helical spring is set on piston rod, and one end of helical spring is connected on the end face of press section, helical spring The other end is fixed on the spring mounting seat of piston barrel, and the check valve element is arranged on piston.

In order to further realize the present invention, at least one check valve element is provided with the piston.

In order to further realize the present invention, the check valve element includes valve body and folding valve block, the pars intermedia of the valve body Position is provided with passage, and the passage both sides of the valve body are provided with gear edge, and the folding valve block is located at the bottom of valve body, the folding valve block One end be fixedly connected on the gear of valve channel side along upper, the other end of the folding valve block is connected to valve channel opposite side Gear along upper, so allowing for folding valve block has two kinds of limiting conditions, and a kind of limiting condition is folding valve block upwards by valve The stop on the gear edge on body, folding valve block will be close to keep off edge, the passage of valve body is fully blocked closing, another limit shape State is that folding valve block is bent downwardly with the gear on valve body along separating, and the passage of valve body is opened conducting.

In order to further realize the present invention, the ring sidepiece is provided with multiple ribs, neck of the rib from inner bag It is extended towards the bottom direction of inner bag.

In order to further realize the present invention, the rib has a width, and the width is from closing on the center of rib court respectively The bottom direction of neck and inner bag to inner bag is gradually successively decreased setting.

In order to further realize the present invention, the Packaging Bottle also includes catheter, and one end of the catheter is via inner bag The neck projection of body enters in the receiving blister cavities of inner bag, and is connected with accommodating blister cavities, the other end extension of the catheter To bottle top end opening and be connected with the bloom mouth of bloom device.

In order to further realize the present invention, the Packaging Bottle also includes bottom, and the bottom is removably covered on bottle Bottom end opening.

In order to further realize the present invention, the top end opening of the bottle is in a bottleneck structure inside contracted, the neck with The inner edge position of the bottleneck structure of the top end opening of bottle is corresponding with shape.

The beneficial effects of the utility model：

1st, the piston type BB frost cases of novel belt check valve structure of the present utility model, are set using in bottle intracavity Inner bag, make inner bag and the BB frosts emulsion that contains can first pass through high temperature sterilization after be placed in again in the receiving blister cavities of inner bag and It will not make liquid that seepage occur, and press device is set close to the position of bottle bottom end opening in bottle cavity volume, by multiple Repeated presses press device, bottle extraneous air constantly enter the piston barrel of press device by air admission hole, then pass through pressing The air entered in piston barrel is pushed and is squeezed into the cavity volume of bottle by the piston of device by steam vent, due in steam vent One-way exhaust valve is provided with, is constantly increased into pressure caused by the air in the cavity volume of bottle, and body produces air to internal bag Pressure extrusion, and then the receiving blister cavities out of lateral compression inner bag, it is squeezed to help the BB frost emulsions stored in receiving blister cavities Press and sprayed via catheter from the bloom mouth of bloom device, so that user uses, improve BB frosts emulsion and take out what is used Convenience；In addition, taking this air pressure mode, it not only avoid extraneous air and enter receiving blister cavities and BB frost emulsion contacts And oxidation deterioration occurs, also effectively prevent bottle outside virus, bacterium enter accommodate blister cavities in and prevent BB frosts emulsion by Pollution, improve the using effect of BB frost emulsions.

2nd, the piston type BB frost cases of novel belt check valve structure of the present utility model, bottle cavity volume are a sealing The receiving space of closing, the exhaust outlet that the piston of press device is simplified are provided with one-way exhaust valve so that big in bottle cavity volume Air pressure is in by force the barotropic state for being easy to extrude bloom all the time, and is provided with rib on the ring sidepiece of inner bag, effectively strengthens The structural strength of the longitudinal direction of inner bag, make the inner bag be not easy to produce compressive deformation along its longitudinal direction, and be only capable of along interior The horizontal direction of bag body produces compressive deformation, with this so that inner bag is pressed because atmospheric pressure caused by extraneous air acts on After contracting, will not affected by gravity and deformation recovery, and then influence the ejection of remaining BB frosts emulsion in inner bag, convenient use BB frosts emulsion is taken out and used by person.

3rd, the piston type BB frost cases of novel belt check valve structure of the present utility model, it is in the top end opening of bottle One bottleneck structure inside contracted, and external screw thread is provided with the outer rim of bottleneck structure, the inside of bloom device is provided with internal thread, utilizes The threaded of internal thread setting corresponding with externally threaded structure, the mode screwed togather using rotation are fixed bottle and pressed with vacuum Device, after the convenient solution use worked as in inner bag, user can be by reversely rotating bottle and bloom device phase Mutually separation, and the replacing of inner bag is carried out, cause Packaging Bottle of the present utility model to form the non-disposable BB frost storages used Container is taken, to more conform to environmental consciousness, reduces the unnecessary wasting of resources；And the utility model is simple in construction, operation Simplicity, the manufacturing cost of BB frost Packaging Bottles is reduced, higher profit space is provided for the sale of BB frost products.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the exploded view of critical piece of the present utility model；

Fig. 3 is sectional view when the utility model is in compression use state；

Fig. 4 is the sectional view (when piston elapses relatively downward) when the utility model is in uncompressed use state；

Fig. 5 is the sectional view that press device of the present utility model is in passage working condition upwards；

Fig. 6 is that press device of the present utility model is in the sectional view for pushing passage working condition；

Fig. 7 is that check valve element of the present utility model is in a kind of sectional view of limiting condition；

Fig. 8 is the sectional view that check valve element of the present utility model is in another limiting condition；

Fig. 9 is the top view of the piston structure of piston of the present utility model；

Figure 10 is the sectional view of inner bag of the present utility model；

Figure 11 is the partial sectional view of the side view of the liquid make-up Packaging Bottle of prior art.

Embodiment

The utility model is further elaborated below in conjunction with the accompanying drawings, wherein, direction of the present utility model is using Fig. 1 as mark It is accurate.

As shown in Figures 1 to 10, the piston type BB frost cases of novel belt check valve structure of the present utility model, it is wrapped Bottle 1, bloom device 2, inner bag 3, catheter 4, press device 5 and bottom 6 are included, wherein,

The use of bottle 1 light weight, compression strength are big, the rigid plastics material of environment-friendly type is made, and wherein the bottle 1 is provided with one Top end opening 11, a bottom end opening 12 and one can divide as the cavity volume 13 of accommodation space, top end opening 11 with bottom end opening 12 The upper and lower both sides of cavity volume 13 are not arranged at, and cavity volume 13 is connected with top end opening 11 and bottom end opening 12, bottle 1 Top end opening 11 is in a bottleneck structure 111 inside contracted, and is provided with external screw thread 112 in the outer rim of bottleneck structure 111, to coordinate spray White device 2 is spirally connected to fix and used.

For the BB frosts that bloom device 2 is used to spray in Packaging Bottle so that user uses, bloom device 2 uses prior art knot Structure realizes that bloom device 2 is installed in the top end opening 11 of bottle 1, and the inside of bloom device 2 is provided with the interior spiral shell for coordinating external screw thread 112 Line 21, the setting corresponding with the structure of external screw thread 112 of the bottleneck structure 111 of bottle 1 of internal thread 21, with this so that bloom device 2 The top end opening 11 of the bottle 1 can be locked in by way of rotation is spirally connected combination, and cause bloom device 2 and the bottle 1 mutual hermetic seal links and keeps fixed.

Inner bag 3 by can flexible plastic material be made, the plastic material generally soft, pliability is good, environmentally friendly, this reality The inner bag 3 for applying example is made up of the material of high temperature resistant such as polyvinyl chloride (PVC) or polypropylene (PP), utilizes plastic material Flexibility characteristic, allow inner bag 3 by the gas pressure compressive deformation of outside, and as the liquid in inner bag 3 is gradual Used and reduce the volume of accommodating space, and then be advantageous to remaining BB frosts emulsion in inner bag 3 to be sprayed easily Go out to use；Inner bag 3 is placed in the cavity volume 13 of the bottle 1, and inner bag 3 is provided with a neck 31, a ring sidepiece 32 and a bottom Portion 33, neck 31 is located at the upper and lower both sides of ring sidepiece 32 with bottom 33, and neck 31, ring sidepiece 32 and bottom 33 are in one The cystic structures of shaping are set, and can store the appearance of BB frosts around forming one by neck 31, ring sidepiece 32 and bottom 33 Receive blister cavities 34；Neck 31 is corresponding with shape with the inner edge position of the bottleneck structure 111 of the top end opening 11 of bottle 1, and neck Portion 31 merges fixation with the phase hermetic seal of catheter 4 so that catheter 4 enters the receiving capsule of inner bag 3 via the projection of neck 31 In chamber 34, and with accommodate blister cavities 34 be connected with each other it is logical；Bottom 33 is corresponding with the shape size of the cavity volume 13 of bottle 1, and bottom Portion 33 is in closed state so that can be used for loading BB frost emulsions in the receiving blister cavities 34 of inner bag 3；Ring sidepiece 32 is provided with more Individual rib 321, rib 321 is set from the lower edge of neck 31 of inner bag 3 towards the direction of bottom 33 in Longitudinal extending, with this so that interior The crosscutting profile graphics of the ring sidepiece 32 of bag body 3 are into wavelike structure as shown in Figure 10, and rib 321 is from the face of ring sidepiece 32 The recessed shaping in direction to the wall for accommodating blister cavities 34, and rib 321 distinctly has a width D, the width D closes on rib certainly The direction of bottom 33 of neck 31 and inner bag 3 that 321 center is respectively facing inner bag 3 is little by little successively decreased setting, i.e. width D The inner bag 3 is respectively facing from the neck 31 for closing on inner bag 3 of rib 321 and the position of bottom 33 for closing on the inner bag 3 Neck 31 and the direction of bottom 33 little by little successively decrease setting.

Catheter 4 realizes that the present embodiment uses interior caliber as 2-5mm, pipe thickness 0.2-0.5mm using prior art Rigid plastics conduit, one end of catheter 4 enters via the projection of neck 31 in the receiving blister cavities 34 of inner bag 3, and with receiving Blister cavities 34 is connected with each other logical；The other end of catheter 4 extends to the top end opening 11 of bottle 1 and is connected with bloom device 2.

Press device 5 is used for the air outside bottle 1 by being pressed into the inner chamber 13 of bottle 1, right to produce pressure The receiving blister cavities 34 of inner bag 3 forms squeezing action；Press device 5 is fixedly installed in a manner of being spirally connected in the cavity volume 13 of bottle 1 Include piston barrel 50, piston 51, piston rod 52, press section corresponding to close to the position of the bottom end opening of bottle 1, press device 5 53rd, helical spring 54 and check valve element 55, piston barrel 50 are with certain volume space and cylindrical type closed at both ends Cavity body 500, piston barrel 50 are in longitudinally disposed, and the crosscutting section shape size of piston barrel 50 and the cavity volume 13 of bottle 1 is mutually fitted Should, the lateral wall of piston barrel 50 between the madial wall of cavity volume 13 for hermetic seal with contacting and keeping being fixedly connected, piston barrel 50 can also be formed in one formula structure with bottle 1, and this is not restricted for it；The downside wall of piston barrel 50 passes through provided with about two The through hole of logical air admission hole 501 and a up/down perforation, two air admission holes 501 cause piston barrel 50 and the outside of bottle 1 Air is connected, and the side wall of piston barrel 50 is provided with the steam vent 502 of a up/down perforation, and piston barrel 50 passes through steam vent 502 are connected with the cavity volume 13 of bottle 1, and one-way exhaust valve 503 is provided with steam vent 502, and one-way exhaust valve causes piston Air in cylinder 50 by the one-way flow of steam vent 502 and is discharged into the cavity volume 13 of bottle 1, and opposite direction flowing can not occur (i.e. one-way exhaust valve prevents the air in the cavity volume 13 of bottle 1 from entering piston barrel 50 by steam vent 502), unidirectional row Air valve 503 is realized using the one-way valve structures of prior art；On piston barrel 50 spring is additionally provided with corresponding to lead to the hole site Mounting seat 504.

Piston 51 can be slippingly arranged in the hollow cavity of piston barrel 50 of bottle cap 3 up and down relatively, the shape of piston 51 Shape size is adapted with the hollow cavity of piston barrel 50, is hermetic seal between the madial wall of piston 51 and piston barrel 50 Touch, piston rod 52 is in longitudinally disposed, and the bottom of piston rod 52 is fixedly connected with the top end face of piston 51, and the top of piston rod 52 leads to The third through-hole for crossing piston chamber 31 is extended to outside piston chamber 31, and the bottom face on the top and press section 53 of piston rod 52 is consolidated Fixed connection, helical spring 54 are arranged between the top end face of piston chamber 31 and the bottom face of press section 53, i.e. helical spring 54 It is set on piston rod 52, and the top of helical spring 54 is connected on the bottom face of press section 53, the bottom of helical spring 54 It is fixedly mounted on the spring mounting seat of the top end face of piston barrel 50.

Check valve element 55 is arranged on piston 51, and one or more check valve element 55, the present embodiment are set on piston 51 Illustrated exemplified by two check valve elements 55 are set, check valve element 55 includes valve body 551, wherein folding valve block 552, valve body 551 Middle part be provided with passage 5511, and be provided with gear along 5512 in the both sides of passage 5511 of valve body 551, folding valve block 552 uses It is a kind of that there is pliability is good, compression strength is big, sealing property is high material to be made, the preferably material material such as silica gel piece, folding Valve block 552 is in the bottom for being horizontally installed on valve body 551, and one end of folding valve block 552 is fixedly connected on the passage 5,511 1 of valve body 551 For the gear of side along 5512, the other end of folding valve block 552 is connected to the gear of the opposite side of 551 passage of valve body 5511 along 5512, this Sample, which allows for folding valve block, has two kinds of limiting conditions, and a kind of limiting condition is folding valve block 552 upwards by valve body 551 Stop of the gear along 5512, folding valve block 552 will be close to gear along 5512, allow the passage 5511 of valve body 551 to be fully blocked closing, Another limiting condition is that folding valve block 552 is bent downwardly and separated with the gear on valve body 551 along 5512, allows the passage of valve body 551 5511 open conducting.

Bottom 6 is used to preventing from causing the Essence in Packaging Bottle to flow out because touching press device 5 by mistake when without using state, Ensure the health of liquid outlet and be easy to the upright placement of Packaging Bottle.Bottom 6 is arranged on bottle 1 the corresponding bottom end opening of bottle 1 The bottom of 12 opening position, bottom 6 and the bottle 1 can be tight fit mode or be spirally connected with reference to mode is mutually fixed, its Fixed mode is not added to limit herein.

When discharging BB frosts using Packaging Bottle of the present utility model, bottom 6 is removed from bottle 1 first, is pressed with finger force Pressing the press section 53 of press device 5, press section 53 promotes piston 51 in piston barrel 50 to overcome the active force of helical spring 54 Upwards occur Relative sliding, now the folding valve block 552 of check valve element 55 upper and lower surface pressure difference effect under by valve body The stop along 5512 is kept off on 551, folding valve block 552 will be close to gear upwards along 5512, allow the passage 5511 of valve body 551 to be in resistance The limiting condition of gear sealing closing, is so allowed in piston barrel 50 and the air in the top of second piston 51 can not pass through Passage 5511, and be compressed continuously and produce larger pressure, force the one-way exhaust valve 503 in simplified 50 steam vent 502 of piston Open, and the air in piston barrel 50 is squeezed into the cavity volume 13 of bottle 1 completely by piston 51, until piston 51 pushes away The first extreme position (when the top end face of piston 51 and the inconsistent top bottom surface of piston barrel 50) is pressed onto, revocation acts on press section Power on 53, under the return action power of the helical spring 54 compressed promote press section 53 move down, press section 53 so as to In piston chamber 31 Relative sliding occurs downwards for band piston 51, and now the folding valve block 552 of check valve element 55 is in upper and lower surface Pressure difference effect under, will be bent downwardly, allow valve body 551 passage 5511 open open conducting, just overcome piston 51 due to the defects of portion space disposed thereon almost is not easy to move down close to vacuum state, so that piston 51 can Relatively easily occur to move freely upper and lower, back and forth in piston barrel 50；The second extreme position (second is moved on on piston 51 When the bottom face of piston 51 and the inconsistent inner bottom surface of piston barrel 50), then firmly the press section 53 of pressing press device 5 promotes Piston 51 is urged to the first extreme position, then recycles the active force of helical spring 54 to promote press section 53, then drives the Two pistons 51 are displaced downwardly to the second extreme position, and and so on, the extraneous air of bottle 1 is constantly entered by press fitting by air admission hole 501 5 piston barrel 50 is put, then the air entered in piston barrel 50 is passed through by steam vent 502 by the piston 51 of press device 5 Pushing is squeezed into the cavity volume 13 of bottle 1, due to being provided with one-way exhaust valve 503 in steam vent 502, into the cavity volume of bottle 1 Pressure caused by air in 13 constantly increases, and body 3 produces atmospheric pressure extruding to internal bag, and then from lateral compression inner bag Receiving blister cavities 34 in 3, it is extruded and via catheter from bloom device 2 to help the BB frost emulsions stored in blister cavities 34 are accommodated Bloom mouth spray, so that user uses, improve BB frosts emulsion and take out the convenience that uses.

The better embodiment of the present invention is the foregoing is only, the invention is not limited in above-mentioned embodiment, is implementing During there may be local small structural modification, if not departing from the essence of the present invention to the various changes or modifications of the present invention God and scope, and belong within the scope of the claim and equivalent technologies of the present invention, then the present invention is also intended to comprising these changes And modification.

Claims (8)

1. A kind of 1. piston type BB frost cases of novel belt check valve structure, it is characterised in that：It includes bottle, bloom fills Put, inner bag and press device, the bottle be provided with top end opening, bottom end opening and can as the cavity volume of accommodation space, and And cavity volume is connected with top end opening and bottom end opening, the bloom device is installed at the top end opening of bottle, institute State inner bag to be placed in the cavity volume of the bottle, the inner bag is provided with neck, ring sidepiece and bottom, the neck and bottom Portion is located at the upper and lower both sides of ring sidepiece, and neck, ring sidepiece and bottom are set in integrally formed cystic structures, and by Neck, ring sidepiece and bottom surround the receiving blister cavities for being formed and can storing BB frosts, the neck opening and bloom of the inner bag The bloom mouth of device is connected, and the bottom of the inner bag is in closed state；The press device is fixedly installed on bottle cavity volume Interior correspond to includes piston barrel, piston, piston rod, press section, spiral shell close to the position of bottle bottom end opening, the press device Spring and check valve element are revolved, being fixedly connected for hermetic seal type between the lateral wall of the piston barrel and the madial wall of cavity volume, The piston barrel side wall is provided with least one air admission hole being connected with the outside atmosphere of bottle, the piston barrel side wall The steam vent being connected with the cavity volume is provided with, one-way exhaust valve is installed in the steam vent；The piston can relatively on Under be slippingly arranged in the hollow cavity of the piston barrel, one end of the piston rod is fixedly connected with the piston, the work The another end of stopper rod is fixedly connected through the through hole of piston barrel with the press section, and the helical spring is set on piston rod, And one end of helical spring is connected on the end face of press section, the other end of helical spring is fixed on the spring of piston barrel In mounting seat, the check valve element is arranged on piston.
2. 2. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described At least one check valve element is provided with piston.
3. 3. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described Check valve element includes valve body and folding valve block, and the middle part of the valve body is provided with passage, and the passage both sides of the valve body are provided with Edge is kept off, the folding valve block is located at the bottom of valve body, and one end of the folding valve block is fixedly connected on the gear of valve channel side Along upper, the other end of the folding valve block is connected to the gear of valve channel opposite side along upper, and so allowing for folding valve block has Two kinds of limiting conditions, a kind of limiting condition are that folding valve block is stopped that folding valve block will be tight by the gear edge on valve body upwards Patch gear edge, makes the passage of valve body be fully blocked closing, and another limiting condition is that folding valve block is bent downwardly and valve body On gear along separation, make valve body passage open conducting.
4. 4. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described Ring sidepiece is provided with multiple ribs, and the bottom direction of the rib from neck towards the inner bag of inner bag is extended.
5. 5. the piston type BB frost cases of novel belt check valve structure according to claim 4, it is characterised in that：It is described Rib has a width, and the width is respectively facing the neck of inner bag and the bottom direction of inner bag from the center for closing on rib Gradual setting of successively decreasing.
6. 6. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described Piston type BB frosts case also includes catheter, and one end of the catheter enters inner bag via the neck projection of inner bag Receiving blister cavities in, and be connected with accommodating blister cavities, the other end of the catheter extend to the top end opening of bottle and with spray The bloom mouth of white device is connected.
7. 7. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described Piston type BB frosts case also includes bottom, and the bottom is removably covered on the bottom end opening of bottle.
8. 8. the piston type BB frost cases of novel belt check valve structure according to claim 1, it is characterised in that：It is described The top end opening of bottle is in a bottleneck structure inside contracted, the inner edge position of the bottleneck structure of the top end opening of the neck and bottle It is corresponding with shape.