CN1161297A - Method for injecting gas into binary packaging can, and the can using the injection method - Google Patents

Abstract

In the present invention adopts the new type binary packing tank structure is adopted. Between its valve chamber and sealing cup a gas-injection channel is preserved for creating the necessary conditions for implementing the new method of valve top gas-injection. When injecting the projecting agent, the gas-injection head is pressed down to seal the upper opening of the sealing cup and the valve core is pressed down slightly, the high pressure gas in the gas-injection head can pass the gas-injection channel smoothly. Said scheme features quick speed of gas-injection, high productivity, good quality and low cost.

Description

The inflating method of two-component packaging spray tank and the two-component packaging spray tank that adapts to it

The invention belongs to the aerosol container field, it is specifically related to a kind of inflating method of later-model two-component packaging spray tank and the structure of the two-component packaging spray tank that adapts with it.

Aerosol container industry development since rising the seventies is very fast, though reached the about 9,000,000,000 jars consumption in the whole world at present, is left alone without help the technical of monobasic packing of staying technically always.So-called monobasic packing is that soup and propellant that desire is sprayed are mixed, and sprays together when needing, because this kind mode exists many drawbacks, so people have spent on the resistance to corrosion that a large amount of time is used in improvement propellant and tank body.--dichlorodifluromethane--can destroy the ozone layer of atmosphere and be forbidden by global environmental protection circle along with main propellant, and that main substitute-third butane and dimethyl ether etc. exist is inflammable, explosive, corrosion tank and directly be discharged into the secondary pollution that can produce green-house effect in the atmosphere, like this, people have just turned to two-component packaging with sight.Two-component packaging is that the pressure gas as propellant is placed between tank body and the capsula interna, and liquid medicine filling is in capsule, and its soup separates fully with the pressure gas of propellant.In spraying the soup process, propellant is exerted pressure from the outside to the soup capsule, and itself does not discharge, thereby has fundamentally solved all problems that the release of propellant brings.This propellant can adopt the very stable gases of own performance such as pressurized air, nitrogen, carbon dioxide simultaneously, can stop the problem of inflammable, explosive and secondary pollution, becomes the direction of current aerosol packing technique.Yet the pre-setting method of two-component packaging pressure gas but brings a lot of difficulties to people.Prior art is broadly divided into two classes, and a class is to reserve the check (non-return) valve that gas injection is used on tank body, and this valve can place the top of sealing cup (Fig. 1-a), (Fig. 1-b), earlier tank body is sealed injects soup thereafter at the bottom of also can being added in jar, the gas injection of pressurizeing again at last, also can first gas injection after fluid injection; Another kind ofly take to cover down the can gas injection, pressurize in jar simultaneously sealing, the sealing device that use can be created a high-voltage among a small circle gas-tight silo that contains jar with valve, at the hyperbaric environment lower sealing, has then filled pressure gas between jar and capsule.Preset in the technology of gas in above-mentioned two classes, the former can produce in the vibration of long term storage transportation and leak, and influences in-use performance; The latter adopts in the following aeration of lid, when if gas-tight silo is little, opening in the left alone without help process that the microenvironment gaseous tension seals, air pressure is difficult for stable, seals jar when interior big gas-tight silo and use to contain, and gas injection reaches specifies high-voltage time lengthening, can influence the raising of capacity rating, if use main equipment, then increase cost of investment, all exist significantly not enough.

After the deficiency of having understood prior art, this application desire proposes a kind of method of later-model valve teeming gas, obtains three pieces of following relevant patent documentations through the rope of picking up of Patent Office of the People's Republic of China: 1. US-5,277,336 " pressure device of product, particularly foamed products are to the pouring processes of its container "; 2. US-4,150,522 " packaging process under the lid of aerosol container "; 3. US-3,659,395 " packaging process of liquid container under stress ".Now these three pieces of documents are made following analysis: the inflating method of the two-component packaging spray tank in first piece is to belong to jar method of rising pouring gas, it is that a unidirectional check (non-return) valve is set in the bottom of jar, its propellant is gone into from the jar rising pouring, what its propellant adopted is the highly volatile gas that can liquefy, in the document, disclosed injection liquid after the first injection propellant, earlier inject annotate propellant behind the soup, the notes propellant is again with six kinds of operating process of the variation of fluid injection or the like again that is evacuated in the capsule earlier.Second piece of document showed a kind of representative type lid technological process of gas injection down, and it has used the sealing device that has the high pressure sealing storehouse, high-voltage propellant is injected in the space outside jar capsula interna to go in the process of sealing.In the 3rd piece of document, introduced other a kind of two-component packaging technology, it is a pre-storage propellant in foamed plastic, not tight with solution tank body at the beginning of the seventies to the propellant air seal, adopt replacement seal gas and contain propellant gas foaming unit of plastic with seal fluid, so it has nothing to do with technical scheme that this paper is proposed with soup.In addition, in the two-component packaging technology of preceding two pieces of patents, its capsula interna all is it to be clamped in tank body in the sealed cans process and to seal between the cup, on this initial engineering factor, just exist basic difference with the technical pattern of this paper, thereby the method in the process of gas injection also exists the difference of principle.

The objective of the invention is to overcome in the prior art plant issue and the special this programme that proposes of technical matters that the method for implanting to two-component packaging spray tank propellant exists, now adopt the control cock that special construction is arranged, it can realize the new mode of valve teeming gas, it has all characteristic of simple very of inflating method and gas injection equipment, the pressure stability of the propellant of its injection, can improve the function and the quality of this product on the whole, can also cost-cutting.

By as above design, the feature of the inflating method of the two-component packaging spray tank that this programme provided is to adopt the method for valve teeming gas, and its process is: the capsula interna of two-component packaging spray tank is done tight connecting with the end opening of control cock earlier; Seal cup with tank body, seal and glass all connect closely with control cock; Core rubber is depressed, and the end face that seals glass centre is obturaged, and spool is depressed slightly, injects high pressure gas to control cock in core rubber, and the reserved passageway between self-styled cup of these high pressure gas and valve chamber enters between jar and the capsule.

After the method for valve teeming gas was determined, its concrete operating process can have following three kinds: (1) was after finishing gas injection, injects soup by the hole of spool in capsula interna; (2) be before gas injection, earlier the hole of soup by spool be injected among the capsula interna; (3) be capsula interna with earlier soup is injected into capsula interna before valve chamber combines among, remake the operation that connects and seal of capsule and valve chamber, gas injection more at last.

The two-component packaging spray tank that is suitable for valve teeming gas method includes the tank body of packing jar, the capsula interna and the control cock of splendid attire soup, and its concrete feature is: the valve chamber of its control cock leaves the passage of gas injection; Its capsula interna is done tightly to connect with valve chamber, wherein, its control cock is by sealing cup, spool, valve seat, spring and tightening seal washer constitute, one compression spring is arranged between spool and the valve chamber, upwards withstand spool, at center spool one blind hole is arranged, there are a cross through hole or a slot scallop to communicate with it in the bottom of blind hole, opening part in the hole has annular groove, the external diameter of its groove part is an interference fit with the internal diameter of cover tightening seal washer herein, the spool of upward movement drives tightening seal washer and tightly is attached to the lower surface that cup is sealed in the valve chamber top, above valve chamber suitable for reading, the rim of the mouth is arranged, its appearance has flange, and the degree of depth in its rim of the mouth, top is slightly less than the thickness of tightening seal washer, has a plurality of cross sections to become the gas injection passage of flute profile on valve chamber outward flange suitable for reading.

Adopt this programme can embody following preceence: 1. this programme has adopted novel two-component packaging spray tank, promptly at valve chamber with seal and leave the gas injection passage between the cup, and then realized the new mode of valve teeming gas, this method technology is simple, use in-to-in air pressure with the tightening seal washer jack-up in the control cock behind the injecting gas, touch the upper wall that seals cup tightly, can obtain the failure-free sealing, make the pressure of the propellant of injection can realize long-term stability, can guarantee the performance of this product; 2. the core rubber of valve teeming gas equipment only makes a sealed high pressure space among a small circle, and the power that is consumed is little, the small investment of its equipment, and the time that gas injection needs is short, the production efficiency height; 3. the control cock parts in this equipment adopt high-intensity engineering plastics, the capsula interna of splendid attire soup is to adopt highly stable nylon or the plastic material of chemical property, the packing jar also need not to use premium-quality anti-corrosion metallic material, and the employing of the propellant of this programme is cheap pressurized air, therefore can reduce manufacturing cost significantly, be suitable for batch manufacturing and promote the use of.

Fig. 1-a is the structural representation that adopts the two-component packaging spray tank that has the gas injection check (non-return) valve in the prior art, and its check (non-return) valve is located at the top of jar.

Fig. 1-b is the structural representation that adopts the two-component packaging spray tank that has the gas injection check (non-return) valve in the prior art, and its check (non-return) valve is located at the bottom of jar.

Fig. 1-c adopts the lid structural representation of the two-component packaging spray tank of inflating method down in the prior art.

Fig. 2 is the structural representation that this programme adopts the two-component packaging spray tank of valve teeming gas method.

Fig. 3 is the operating process scheme drawing that this programme adopts the gas injection of valve teeming gas method.

Fig. 4 is the operating process scheme drawing that this programme adopts the filling liquid of valve teeming gas method.

The embodiment of existing accompanying drawings this programme.In this patent, adopted the structure of later-model two-component packaging jar, created condition for realizing valve teeming gas new mode.Its two-component packaging spray tank is made up of tank body 1, capsula interna 3 and control cock, its control cock partly comprise seal cup 2, valve chamber 4, spring 5, spool 6, tightening seal washer 7 constitute, its capsula interna is the bag of a flexibility, it connects closely with valve chamber, seal the connection closely that cup and tank body are the volume pressure types, sealing between cup and the valve chamber simultaneously also is to connect closely, and this has just formed two spaces that isolate mutually that capsula interna is inner and jar capsula interna is outer.In the control cock part, there is a blind hole at the center on spool top, there are a cross through hole or a slot scallop to communicate with it in the bottom of blind hole, one annular groove is arranged on the spool face at cross-drilled hole place, overlapping a tightening seal washer at the annular groove place, the internal diameter of its tightening seal washer becomes the cooperation of interference with the external diameter of spool annular groove, just in time the two ends in hole are sealed, at ordinary times under the effect of spring, spool is upward movement as best one can, tightening seal washer is close to seal the lower surface in glass centre, valve chamber is that the cup that extends conduit is arranged at a bottom, the suitable for reading of cup-like portion has the rim of the mouth, and there is flange the outside, and it is the gas injection passage 8 of the reservation of flute profile that a plurality of cross sections are arranged at the flange place.During gas injection, core rubber 9 is depressed, control cock being sealed the centre of cup obturages, simultaneously spool is depressed slightly, poured into high-voltage gas in core rubber, the spool of depressing slightly this moment presses down the middle part of tightening seal washer, make the upper limb of annular groove push down the internal orifice of packing ring tightly, make its attenuation because of packing ring is stretched this moment, and high pressure gas enter in the jar from the gas injection passage of reserving, and have finished the operation of tank deck gas injection.What the propellant of this programme adopted is the most cheap pressurized air, each element of control cock uses engineering plastic materials, tank body also can avoid using senior resistant material, because control cock is rational in infrastructure, therefore the air pressure that gas injection is simple to operate, jar interior propellant is lacked and can be kept for a long time to the time, can improve the quality fully, cost-cutting, demonstrate its extremely strong survivability.

Claims (4)

1. the method for the gas injection of a two-component packaging spray tank, what it is characterized in that its adopts is the method for valve teeming gas, its process is: the capsula interna of two-component packaging spray tank (3) is done tight connecting with the end opening of control cock earlier; Tank body (1) with seal the cup (2), seal the cup all connect closely with control cock; Core rubber (9) is depressed, the end face that seals glass centre of valve is obturaged, and spool (6) depressed slightly, in core rubber, inject high pressure gas to tank deck, the reserved passageway (8) between the valve chamber of self-styled cup of these high pressure gas and control cock enter into jar and capsule between.

2. according to the described inflating method of claim 1, it is characterized in that after finishing tank body and control cock connects closely, go into after the high pressure gas, in capsula interna, inject soup by the hole of spool by the valve teeming.

3. according to the described inflating method of claim 1, it is characterized in that capsula interna with earlier soup is injected into capsula interna before valve chamber combines among, remake the operation that connects and seal of capsula interna and valve chamber, gas injection more at last.

4. the two-component packaging spray tank of a suitable valve teeming gas method, it includes the tank body (1) of packing jar, the capsula interna (3) and the control cock of splendid attire soup, it is characterized in that being reserved with gas injection passage (8) in its control cock; Its capsula interna is done tightly to connect with valve chamber, wherein, its control cock is by sealing cup (2), spool (6), valve chamber (4), spring (5) and tightening seal washer (7) constitute, between spool and the valve chamber compression spring is arranged, upwards withstand spool, at center spool one blind hole is arranged, there are a cross through hole or slot scallop to communicate with it in the bottom of blind hole, opening part at cross-drilled hole has annular groove, the external diameter of its groove part is an interference fit with the internal diameter of cover tightening seal washer herein, the spool of upward movement drives tightening seal washer and tightly is attached to the lower surface that cup is sealed in the valve chamber top, above valve chamber suitable for reading, the rim of the mouth is arranged, appearance has flange, and the degree of depth in the rim of the mouth of its top is slightly less than the thickness of tightening seal washer, has a plurality of cross sections to become the gas injection passage (8) of flute profile on valve chamber outward flange suitable for reading.

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