CN101698162A

CN101698162A - Foam gun

Info

Publication number: CN101698162A
Application number: CN200710039202A
Authority: CN
Inventors: 王良
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-04-06
Filing date: 2007-04-06
Publication date: 2010-04-28

Abstract

The invention discloses a foam gun, which comprises a gun body, a liquid inlet valve, a liquid outlet valve and a switching device, wherein the switching device can open or close the liquid outlet valve; and the liquid outlet valve comprises a liquid outlet nozzle, a valve plug and a reset spring. The foam gun is characterized in that: a sealing ring made of plastic is arranged on the valve plug and is sealed with the liquid outlet nozzle; the leakage and/or curing of foam caulking agent in the foam gun are/is effectively prevented and avoided; the danger of the leakage, burning or explosion of the foam caulking agent or gas is effectively prevented and avoided; the abrasion performance, airtightness and stability of the sealing ring are improved; and the leakage of the foam caulking agent caused by abrasion, looseness, deformation, or peeling off is avoided. The foam gun has a simple and reasonable structure, greatly improves the foaming quantity and quality of foam caulking agent, saves energy, has safe and cleaning use, prolongs the service life, has low cost, and is suitable for mass production.

Description

Foam gun

Technical field

The present invention relates to the foam gun of spray foam gap filler.

Background technology

About the door in building and the house, window, body of wall, coating, mix earth, water-impervious such as timber and frosting is installed, joint filling or mending-leakage, the insulation that air-conditioning is installed, application of anti-leakage layers, various pipelines are installed, fill in the surplus hole of ventilating opening and electric wire outlet, combined socket and switch and the relevant installation that needs insulation etc., generally all adopting foam gap filler is raw material, during use, by foam gun foam gap filler is discharged and reach installation, joint filling, mending-leakage, insulation, insulation or purpose such as bonding, foam gap filler generally is for having air pressure or than the liquid status of hyperbar at the foam gun internal channel, when opening the fluid mouth by the switching device in the foam gun, the foam gap filler that ejects foams back curing and is bonded in needed place, so, in the process of constructing by foam gun, the sealing of foam gun must be a high request, especially the sealing stability of liquid valve is even more important in the foam gun, after the filling body is housed on the feed liquor valve at foam gun, if the seal degree of liquid valve does not reach standard or a seepage phenomenon is arranged slightly, foam gap filler in the foam gun can solidify at any time or endlessly outwards overflow or spray, cause foam gun to be easy to scrap, do not decrease and be bonded on hand or be difficult on the clothes to clean, moreover, do not decrease to be injected on the eyes to produce serious consequence.

The spool of foam gun and fluid mouth are generally directly hard sealing in the prior art, though the effect of the foam gap filler that ejects foaming (expansion) is better, but be difficult to be closed because of self having higher air pressure when leaving over foam gap filler when discontinuous operation or in the passage, that is to say and do not reach normal seal request between them, foam gap filler is easy to external leakage, very easily cause the foam gap filler in the rifle body curing to occur and cause whole passage to stop up, even, the danger of burning or exploding can appear.

Also have and a kind ofly in the fluid mouth, sealing ring is set, this structure, generally can also adopt fixture to fix the larger area sealing ring, have been found that, when foam gap filler when the fluid mouth sprays, sealing ring and/or fixture have produced very big obstruction to the flow velocity of foam gap filler, the gas release and the quality of foam gap filler have been reduced, improved cost, in addition, because foam gap filler has very strong viscous force, when construction constantly the moving back and forth and be easy to pulling (adhesion) sealing ring and cause the loosening or distortion of sealing ring or come off of spool, also be easy to make sealing ring to occur wearing and tearing, so, still exist and leak foam gap filler phenomenon, the service life of having reduced foam gun.

Summary of the invention

The objective of the invention is the defective that exists at above-mentioned prior art and propose a kind ofly to prevent effectively and avoided the foam gap filler in the foam gun foam gun of phenomenon to occur leaking and/or solidifying.

Another object of the present invention is to prevent and avoided foam gap filler or gas the danger of burning or exploding to occur because of leakage effectively.

Another object of the present invention is to prevent effectively and avoided the passage in the foam gun clogging to occur, has prolonged service life.

Another object of the present invention is wearability, sealing and the stability that has improved sealing ring, has avoided effectively causing foam gap filler to occur to external leakage because of wearing and tearing or loosening or distortion or obscission occurring.

Another object of the present invention is to have improved the gas release and the quality of foam gap filler, reduces cost, and has saved resource, and safe in utilization, cleaning is fit to produce in enormous quantities.

In order to realize the foregoing invention purpose, the invention provides a kind of foam gun, it comprises rifle body, feed liquor valve, liquid valve and switching device, switching device can make liquid valve open or close, liquid valve comprises fluid mouth, spool and back-moving spring, it is characterized in that: the sealing ring that plastics make is set on described spool seals mutually with described fluid mouth.

On the described spool recess is set, described sealing ring has at least part to be arranged in the described recess.

Described recess is recess or the irregular recess in annular recess or a plurality of point type recess or the screw-type.

Described plastic seal ring adopts plastics to melt and be infused in by the plastics machine and is embedded with in the mould of plastics that has the part spool at least, makes the plastic seal ring of formation have at least part to be enclosed in the recess that is provided with on the described spool.

Described spool adopts metal material to make.

The structure that described plastic seal ring and described spool fuse.

The part that has at least of described spool head is exposed sealing ring.

Described plastic seal ring adopts the material of resistance to chemical attack to make.

Described plastics comprise poly-third or polypropylene or polyethylene or polyformaldehyde material.

Described sealing ring has the external diameter of part at least between 1.5 millimeters～7 millimeters.

Described sealing ring has the external diameter of part at least between 2.5 millimeters～5 millimeters.

Adopt the present invention of technique scheme, prevent and avoided foam gap filler appearance leakage and/or the curing phenomenon in the foam gun effectively; Prevent and avoided foam gap filler or gas the danger of leaking or burning or exploding to occur effectively, improved wearability, sealing and the stability of sealing ring, avoided occurring wearing and tearing or loosening or distortion effectively or come off and cause the outside leakage phenomenon of foam gap filler; This is simple and reasonable for structure, has improved the gas release and the quality of foam gap filler widely, has saved resource, and safe in utilization, cleaning has prolonged service life, and cost is low, is fit to produce in enormous quantities.

Description of drawings

Fig. 1 is the structure cross-sectional schematic of an embodiment of the present invention.

Fig. 2 emphasis illustrates fluid mouth and spool local structure for amplifying schematic diagram partly among Fig. 1.

Structural representation when Fig. 3 illustrates the sealing ring of interlocking in the recess of spool with the spool decomposition for emphasis among Fig. 2.

Structural representation when Fig. 4 is Fig. 1 liquid valve duty (opening).

Fig. 5 emphasis illustrates fluid mouth and spool local structure for amplifying schematic diagram partly among Fig. 4.

Among the figure

The 1-rifle body 2-feed liquor valve 21-liquid inlet port 22-closure member 23-second back-moving spring 3-liquid valve 31-fluid mouth 32-spool 321-head 33-back-moving spring 4-switching device 5-second sealing ring 51-second fixture 6-recess 7-sealing ring 8-adjuster

The specific embodiment

Foam gun of the present invention, it comprises rifle body 1, feed liquor valve 2, liquid valve 3 and switching device 4, liquid valve 3 comprises fluid mouth 31, spool 32 and back-moving spring 33, switching device 4 can make liquid valve 3 open or close, such as, spool 32 has at least part to stretch out the internal channel of foam gun, switching device 4 can be acted on the described spool 32 directly or indirectly, the sealing ring 7 that plastics make wherein is set on described spool 32 to be sealed mutually with described fluid mouth 31, prevent and avoided foam gap filler appearance leakage and/or the curing phenomenon in the foam gun effectively, prevented that effectively clogging from appearring in passage, prevent and avoided foam gap filler in the foam gun or gas to occur leaking effectively or the danger of burning or blast, improved the wearability of sealing ring, sealing and stability, avoided occurring wearing and tearing or loosening or distortion effectively or come off and cause foam gun to leak the foam gap filler phenomenon, this is simple in structure, rationally, the gas release and the quality of foam gap filler have been improved, saved resource, safe in utilization, cleaning, prolonged service life, cost is low, is fit to produce in enormous quantities.

Referring to Fig. 1, Fig. 2 and Fig. 3, Fig. 3 clearly illustrates the situation that sealing ring matches with recess for the spool among Fig. 2 and sealing ring with the formation of exploded view, recess 6 is set on spool 32, recess 6 is an annular recess, the sealing ring 7 of plastics is set in annular recess 6, and the hardness height also has soft, sealing effectiveness between them is better, and not yielding.Recess also can adopt recess in a plurality of point type recesses or the screw-type or irregular recess etc., the fastness height when plastic seal ring is connected with spool, difficult drop-off.Plastics adopt the material of resistance to chemical attack to make, and make sealing effectiveness better, long service life.The sealing ring 7 of plastics is set on spool 32, its optimal technical scheme is to have at least spool 32 part to be embedded in the mould of processing plastic sealing ring, by injection machine with plastic molting and inject mould and form plastic seal ring 7 and have at least part closely to be enclosed on the spool 32 annular recess 6 (groove) that is provided with, the fastness height, make sealing ring 7 and spool 32 sealing mutually to heavens, the structure that spool 32 and sealing ring 7 are fused, prevented that obscission from appearring in sealing ring 7, the volume of sealing ring 7 is made smaller also difficult drop-off, and its sealing and result of use are better.Plastic seal ring employing poly-third or polypropylene or polyethylene or polyformaldehyde material are preferred material.

When the needs foam gun is constructed, the filling body that will have a foam gap filler is packed on the feed liquor valve 2 of foam gun, at this moment, by self having pressure promotion closure member 22 than the foam gap filler of hyperbar, the foam gap filler of irritating in the body is entered rapidly in the internal channel of rifle body 1, at this moment, plastic seal ring 7 that is provided with in the recess 6 of spool 32 and the effect effectively mutually sealing of fluid mouth 31 by back-moving spring 33, in addition, the part that has at least of spool 32 heads 321 is exposed plastic seal ring 7, keep away mutually in the plastic seal ring 7 that has been provided with on the spool 32 when having avoided spool 32 motions and the fluid mouth 31 and rub, prevent effectively and avoided liquid valve 3 foam gap fillers or gas to occur leaking and cause foam gap filler in burning or blast or the rifle body internal channel phenomenon that is cured, solve plastic seal ring 7 and occurred wearing and tearing or loosening or distortion or obscission easily, prolonged service life.Referring to Fig. 4 and Fig. 5, when needs are constructed, Drawing switch device 4 drives spool 32 and moves, the plastic seal ring 7 that fuses with spool 32 leaves the outlet of fluid mouth 31 along with spool 32, make the inner chamber of fluid mouth 31 exit portion form bigger space, at this moment, foam gap filler just can have no to hinder and effectively ejection from fluid mouth 31, produce more large tracts of land, even and high-quality foam-filled thing is bonded in needed place, reduced the consumption of foam filling agent widely, gas release and quality have been improved, saved resource, simultaneously, avoid plastic seal ring 6 wearing and tearing or distortion or loosening or obscission to occur, also prevented to occur leaking the foam gap filler phenomenon effectively.

Sealing ring adopts plastics to make, and has both had hardness, has softly, wear-resisting again, with fluid mouth 31 favorable sealing effect mutually, is not prone to distortion or loosening or obscission when being arranged on the spool 32, good leak-proof effect.

Plastic seal ring employing poly-third or polypropylene or polyethylene or polyformaldehyde are preferable selection, and cost is low, and resistance to chemical attack is wear-resisting, and sealing is better.

The external diameter that sealing ring 7 has part at least between 1.5 millimeters～7 millimeters for preferable selection, make foam gap filler more swimmingly outside the extrusive body, and good sealing effect.It is between 2.5 millimeters～5 millimeters that sealing ring 7 has its preferred size of external diameter of part at least.

Spool 32 adopts metal material to be made for preferred material, the intensity height, and wearability is good, and the plastic seal ring 7 that is arranged on the spool 32 is is more firmly worn and torn with avoiding.

Feed liquor valve 2 also can comprise liquid inlet port 21, closure member 22 and back-moving spring 23 etc.

Stretch out second fixture 51 that internal channel and rifle body 1 connection can be provided with second sealing ring 5 and be used for fixing second sealing ring 5 at spool 32.

Can also adjuster 8 be set at the afterbody of rifle body 1, be used to regulate liquid valve 3 and discharge the many of foam gap filler amount or few.

Technical scheme of the present invention, the foam gun of applicable any structure, such as the foam gun that is applicable to split-type structural, the locking mechanism that can lock or divide shooting body and foam device that the foam gun of split-type structural generally comprises rifle body, foam device and is provided with between rifle body and foam device.The rifle body can comprise part rifle body, have spool, switching device and the adjuster of part at least; Foam device can comprise part rifle body, feed liquor valve, fluid mouth and have the spool of part at least.Spool can also be made split type structure, and connect or separate by jockey.

Though below in conjunction with the embodiments the present invention has been made detailed description; but those of ordinary skill obviously can be recognized in the art; previous embodiment only is for the present invention; and non-limiting the present invention; in design scope of the present invention; can also make multiple variation or distortion to previous embodiment, these variations and distortion all should belong to the protection domain of this patent.

Claims

1. foam gun, it comprises rifle body, feed liquor valve, liquid valve and switching device, switching device can make liquid valve open or close, and liquid valve comprises fluid mouth, spool and back-moving spring, it is characterized in that: the sealing ring that plastics make is set on described spool seals mutually with described fluid mouth.

2. according to the described foam gun of claim 1, it is characterized in that on the described spool recess being set, described sealing ring has at least part to be arranged in the described recess.

3. according to the described foam gun of claim 2, it is characterized in that described recess is recess or the irregular recess in annular recess or a plurality of point type recess or the screw-type.

4. according to the described foam gun of claim 2, it is characterized in that described plastic seal ring adopts plastics to melt and be infused in by the plastics machine and is embedded with in the mould of plastics that has the part spool at least, make the plastic seal ring of formation have at least part to be enclosed in the recess that is provided with on the described spool.

5. according to the described foam gun of claim 1, it is characterized in that described spool adopts metal material to make.

6. according to claim 1 or 5 described foam guns, it is characterized in that the structure that described plastic seal ring and described spool fuse.

7. according to claim 1 or 2 or 3 or 4 or 5 described foam guns, it is characterized in that the part that has at least of described spool head is exposed sealing ring.

8. according to claim 1 or 2 or 3 or 4 or 5 described foam guns, it is characterized in that described plastic seal ring adopts the material of resistance to chemical attack to make.

9. according to claim 1 or 2 or 3 or 4 or 5 described foam guns, it is characterized in that described plastics comprise poly-third or polypropylene or polyethylene or polyformaldehyde material.

10. according to claim 1 or 2 or 3 or 4 or 5 described foam guns, it is characterized in that described sealing ring has the external diameter of part at least between 1.5 millimeters～7 millimeters.

11., it is characterized in that described sealing ring has the external diameter of part at least between 2.5 millimeters～5 millimeters according to the described foam gun of claim 10.