CN101288861A - Foaming gun - Google Patents

Abstract

The invention provides a foaming gun, comprising a gun body, a liquid inlet valve, a liquid outlet valve, a liquid outlet passage and a switch device; the switch device can lead the liquid outlet valve to be opened or closed; the liquid outlet valve comprises a liquid outlet nozzle with an outlet, a valve core and a recovery spring; the foaming gun is characterized in that a head of the valve core is provided with a sealing part which is made of plastic and a structure that the head of the valve core is connected with the sealing part to form a whole; the plastic sealing part is sealed with the liquid outlet nozzle; at least part of the aperture of the outlet of the liquid outlet nozzle ranges from 1.5mm to 2.5mm; alternatively, the section dimension of the internal hole of the outlet of the liquid outlet nozzle with the largest transverse length is 1.5-3.0mm; therefore, leakage and/or solidification phenomena of foam filling agent in the foaming gun are/is effectively prevented and avoided; the risk of leakage or combustion or explosion of the foam filling agent or the gas is effectively prevented and avoided; the anti-wearability, sealing performance and the stability of the sealing part are improved; the external leakage of the foam filling agent which is caused by abrasion or loosening or deformation or abscission or corrosion of the foam filling agent or the corrosion of cleaning agent is effectively avoided; the leakage phenomena of foam filling agent or gas which is caused by the deformation or cracking of the liquid outlet nozzle is effectively prevented; the structure of the foaming gun is simple and reasonable, thus greatly improving the foaming quantity and the quality of the foam filling agent, saving the resource, having safe and clean application and low cost, prolonging the service life and being suitable for mass production.

Description

Foam gun

Technical field

The present invention relates to be used to spray the foam gun of 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, such as: foam gap filler can adopt and comprise gas and the chemical raw material that self has air pressure, comprise butane gas and polyurethane etc. such as employing, expand and form foam-like in the ejection back, spontaneous curing again, 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 is generally at the foam gun internal channel and self has air pressure or than the liquid status of hyperbar, 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 on the feed liquor valve at foam gun the filling body that has foam gap filler being housed, 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 blast can appear, in addition, when construction, the fluid mouth is easy to wearing and tearing occur and causes leakage phenomenon.

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, have reduced the gas release and the quality of foam gap filler, have improved cost.Because foam gap filler has very strong viscous force, the constantly movable back and forth or twisting of spool is easy to the sealing ring in pulling (adhesion) fluid mouth when construction, cause sealing ring wearing and tearing or loosening or distortion or obscission to occur, so, still exist and leak foam gap filler or gas or the foam filling agent phenomenon that is cured, shortened the service life of 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 seal, has avoided effectively because of wearing and tearing or loosening or distortion occurring or coming off or be subjected to the foam filling agent corrosion or be subjected to the cleaning agent corrosion to cause that phenomenon appears leaking or solidifying in the foam gap filler in the passage in the rifle body.

Another object of the present invention is to have prevented that effectively the fluid mouth from distortion occurring or break and cause and leak foam filling agent or gaseous phenomena.

Another object of the present invention is to have improved the gas release and the quality of foam gap filler, has reduced cost, 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, liquid outlet channel and switching device, switching device can make liquid valve open or close, liquid valve comprises fluid mouth, spool and the back-moving spring that has outlet, it is characterized in that: described spool head is provided with the seal that plastics are made, and the all-in-one-piece structure that is connected, and described plastic seal seals mutually with described fluid mouth; The aperture that is exported to rare part of described fluid mouth is between 1.5 millimeters～2.5 millimeters, and perhaps, the cross section that the endoporus of the outlet of described fluid mouth has maximum transversal length is of a size of between 1.5 millimeters～3.0 millimeters.

The aperture that is exported to rare part of preferred described fluid mouth is between 1.7 millimeters～2.3 millimeters, and perhaps, the cross section that the endoporus of the outlet of described fluid mouth has maximum transversal length is of a size of between 1.7 millimeters～2.5 millimeters.

The thickness of the outlet of described fluid mouth is between 0.5 millimeter～5 millimeters.

The thickness of the outlet of preferred described fluid mouth is between 0.5 millimeter～3.0 millimeters.

The head of described spool comprises shoulder, and described plastic seal has at least part to be arranged on the described shoulder.

Comprise protuberance or recess or screw thread on the head of described spool or the shoulder, described plastic seal has at least part to be arranged on the protuberance or recess or screw thread of described spool.

Described spool head comprises shrinkage pool, and described plastic seal has the part interlocking at least in the shrinkage pool of described spool.

Protuberance or recess or screw thread are set in the described shrinkage pool, and described plastic seal has at least in part and the described shrinkage pool protuberance that is provided with or recess or screw thread be connected or blocks.

Described protuberance comprises annular protrusion or point type protuberance or irregular protuberance, and described recess comprises annular recess or point type recess or irregular recess.

Described plastics adopt the material of resistance to chemical attack to make.

Described plastics comprise polypropylene or polyethylene or polyformaldehyde or pvc material.

The head of described plastic seal stretches in the outlet of described fluid mouth or the outlet of exposing described fluid mouth.

Described spool adopts metal material to make.

Described spool has at least part to adopt to comprise the Stainless Steel material or comprises and do not embroider iron material or comprise that copper product makes.

Described spool has the external diameter of part at least between 1.5 millimeters～6 millimeters.

Preferred described spool has the external diameter of part at least between 2.5 millimeters～4.5 millimeters.

Described fluid mouth adopts and comprises copper product or comprise the Stainless Steel material or comprise and do not embroider iron material or comprise that Zinc material makes.

Described plastic seal adopts plastics by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, on the protuberance that makes the plastic seal of formation have at least part to be enclosed in to be provided with on the described spool head or recess or the screw thread and the structure that links into an integrated entity.

Described plastic seal adopts and comprises polypropylene or polyethylene or polyformaldehyde or polyvinyl chloride by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, on the protuberance that makes the plastic seal of formation have at least part to be enclosed in to be provided with on the described spool head or recess or the screw thread and the structure that links into an integrated entity.

Described plastic seal adopts plastics by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, makes the plastic seal of formation have at least part to be embedded in the shrinkage pool that is provided with on the described spool head and the structure that links into an integrated entity.

Described plastic seal adopts and comprises polypropylene or polyethylene or polyformaldehyde or polyvinyl chloride by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, makes the plastic seal of formation have at least part to be embedded in the shrinkage pool that is provided with on the described spool head and the structure that links into an integrated entity.

Described plastic seal has the external diameter of part at least between 1.5 millimeters～7 millimeters.

Preferred described plastic seal 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 seal, avoided occurring wearing and tearing or loosening or distortion effectively or come off or be subjected to the foam filling agent corrosion or be subjected to the cleaning agent corrosion and cause foam gap filler to external leakage; Prevented that effectively the fluid mouth from distortion occurring or break and cause and leak foam filling agent or gaseous phenomena, this is simple and reasonable for structure, the gas release and the quality of foam gap filler have been improved widely, saved resource, safe in utilization, cleaning, prolonged service life, 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 the local structure for amplifying schematic diagram of fluid mouth among Fig. 1, liquid outlet channel and spool part.

Structural representation when Fig. 3 illustrates the plastic seal of interlocking in 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 the local structure for amplifying schematic diagram of fluid mouth among Fig. 4, liquid outlet channel and spool part.

Fig. 6 emphasis illustrates the local enlarged diagram of the another kind of structure of fluid mouth, liquid outlet channel and spool part.

Structural representation when Fig. 7 illustrates the plastic seal of interlocking in the shrinkage pool of spool with the spool decomposition for emphasis among Fig. 6.

Among the figure

The recessed edge 72-of 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 311-outlet 32-spool 321-protuberance 322-recess 323-shrinkage pool 3231-flange 324-shoulder 33-back-moving spring 4-liquid outlet channel 5-switching device 6-second seal 61-fixture 7-plastic seal 71-recess 73-protuberance 74-second shoulder 8-adjuster

The specific embodiment

Foam gun of the present invention, it comprises rifle body 1, feed liquor valve 2, liquid valve 3, liquid outlet channel 4 and switching device 5, liquid valve 3 comprises fluid mouth 31, spool 32 and the back-moving spring 33 that has outlet 311, switching device 5 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 5 can be acted on the described spool 32 directly or indirectly, described spool 32 heads are provided with the seal 7 that plastics are made, and the all-in-one-piece structure that is connected, described plastic seal 7 seals mutually with described fluid mouth 31; The outlet 311 of fluid mouth 31 has the aperture of part at least between 1.5 millimeters～2.5 millimeters, perhaps, the cross section that the endoporus of the outlet 311 of fluid mouth 31 has maximum transversal length is of a size of between 1.5 millimeters～3 millimeters, 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 seal, sealing and stability, avoided occurring wearing and tearing or loosening or distortion effectively or come off and cause foam gun to leak foam gap filler or gaseous phenomena, even cleaned by foam filling agent immersion or cleaning agent, plastic seal can not occur being corroded or loosening or distortion or obscission yet, resistance to corrosion is strong, prevented that seal from causing leakage phenomenon because of occurring coming off, 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, Fig. 3, Fig. 4 and Fig. 5, the head of described spool 32 comprises protuberance 321 and/or recess 322, also comprise seal 7, the employing plastics are made, make the structure of one (referring to Fig. 1 with protuberance 321 that is provided with on spool 32 heads and/or recess 322, Fig. 2 and Fig. 4), the hardness height, fastness is good, be not prone to distortion or loosening or obscission, also have soft, sealing and good leak-proof effect, the preferred material of plastics is made for the material that adopts resistance to chemical attack, such as, plastics can adopt and comprise polypropylene or materials such as polyethylene or polyformaldehyde or polyvinyl chloride, hardness and intensity height, also have soft, wear-resisting, corrosion-resistant, effective when sealing mutually with fluid mouth 31, be not prone to distortion, loosening, wear and tear or come off, the head of plastic seal 7 is provided with second shoulder 74, when construction, spool 32 is movable back and forth, inclined-plane in second shoulder 74 is stablized and sealing mutually to heavens with fluid mouth 31, and the head of plastic seal 7 stretches in the outlet 311 of fluid mouth 31, the outlet 311 that perhaps has part to expose described fluid mouth 31, can clear up solidfied material or dirt residual in the outlet 311 of fluid mouth 31 in time, long service life; On protuberance 321 that the head that plastic seal 7 has at least part to be enclosed in described spool 32 is provided with and the recess 322 (referring to Fig. 3), spool 32 is connected with plastic seal 7 to be blocked when being integral mutually, the fastness height, prevent and avoided occurring obscission effectively, plastic seal 7 that is provided with on the spool 32 and fluid mouth 31 sealing mutually stably, wear-resisting, be not prone to distortion or loosening, sealing effectiveness is lasting, has prevented that effectively phenomenon from appearring leaking or solidifying in the foam filling agent in the foam gun internal channel.Referring to Fig. 3, the head of spool 32 is provided with shoulder 324, protuberance 321 and/or recess 322 is set on shoulder 324 is preferred structure, make plastic seal 7 can make the less size all-in-one-piece structure that is connected with spool 32, the convenient installation, good sealing effect has more improved the flow velocity of foam filling agent, improve gas release and quality, saved resource.Also can on the shoulder 324 that is provided with on described spool 32 heads or the head, comprise screw thread, improve plastic seal 7 and be connected fastness on the spool 32, prevent that distortion or loosening or come off or wear phenomenon from appearring in plastic seal 7.Especially the head of spool 32 adopts and comprises protuberance 321 and/or recess 322, the structure that plastic seal 7 and protuberance 321 and/or recess 322 link into an integrated entity, and fastness is higher, has solved distortion or loosening or the obscission of easy appearance.

Referring to Fig. 2 and Fig. 3, described protuberance 321 is an annular protrusion, also can be the point type protuberance, also can be irregular protuberance etc., described recess 322 can be annular recess, also can be the point type recess, also can be irregular recess etc., fastness height when plastic seal 7 is connected with spool 32 has prevented to occur distortion or loosening or obscission.Referring to Fig. 3, recessed edge 71 is set in the shrinkage pool of plastic seal 7 matches with described protuberance 321, improved the fastness that is connected between them more.

The seal 7 that plastics are set in spool 32 adopts the material of resistance to chemical attack to make, wear-resisting, anti-foam filler or cleaning agent corrosion, leak resistance is good, referring to Fig. 2, spool 32 be connected with plastic seal 7 into a single integrated structure optimal technical scheme be with spool 32 have at least the part be embedded in the mould of processing plastic seal, by the plastics machine with plastic molting and inject mould, on annular protrusion 321 that makes the plastic seal 7 of casting forming have at least part closely to be enclosed in to be provided with on the shoulder 324 of spool 32 heads and the annular recess 322 or on the screw thread, thereby formed the spool 32 all-in-one-piece structure that is connected with plastic seal 7, solve seal and occurred wearing and tearing or loosening or distortion or obscission easily, prevent effectively and avoided occur leaking foam gap filler or gaseous phenomena, prolonged service life.Its optimal technical scheme is to adopt to comprise polypropylene or polyethylene or polyformaldehyde or pvc material by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, on protuberance 321 that makes the plastic seal 7 of formation have at least part to be enclosed in to be provided with on described spool 32 heads and the recess 322 or on the screw thread and the structure that links into an integrated entity.

Spool 32 adopts metal material to be made for preferred material, hardness and intensity height, and wearability is good, makes the plastic seal 7 that is arranged on the spool 32 more firmly and not be prone to distortion or loosening or obscission.Preferred material comprises stainless steel material for the spool employing that is positioned at passage at least or comprises the stainless iron material or comprise that copper product makes, and hardness and intensity height are wear-resisting, corrosion-resistant, be difficult for getting rusty, good sealing effect has been avoided causing leakage phenomenon because of corrosion occurring effectively.Further, spool 32 adopts and comprises stainless steel material or comprise the stainless iron material, the better effects if of anti-leak.Spool 32 has the external diameter of part at least between 1.5 millimeters～6 millimeters the time, make flowing of foam filling agent more smooth and easy and strong, improved gas release and quality more, described spool has the external diameter preferred size of part at least between 2.5 millimeters～4.5 millimeters.

Fluid mouth 31 adopts and comprises copper product or comprise stainless steel material or comprise the stainless iron material or comprise that Zinc material makes, and is corrosion-resistant, the hardness height, and surface abrasion resistance, good airproof performance is difficult for getting rusty, and leak resistance is good, and sealing effectiveness is better when matching with plastic seal 7.

The outlet 311 of fluid mouth 31 has the aperture size of part at least between 1.5 millimeters～2.5 millimeters, the cross section that the endoporus of the outlet 311 of perhaps described fluid mouth 31 has the maximum transversal length N is of a size of between 1.5 millimeters～3 millimeters (referring to Fig. 5), prevented that the gas release and the quality of foam filling agent (foam is filled out and met agent) from appearring stopping up or reducing in fluid mouth 31, prevents and avoided occurring leaking foam filling agent or gaseous phenomena effectively.If export 311 aperture less than 1.5 millimeters or export 311 endoporus N less than 1.5 millimeters, the outlet 311 of fluid mouth 31 is easy to occur clogging, and the raw material of filler and gas are out of proportion from the outlet ejection, make the weak effect of foam filling agent ejection post-foaming (expansion), gas release is few, increase consumption, wasted resource; If export 311 aperture greater than 2.5 millimeters or export 311 endoporus N greater than 3 millimeters, the insufficient strength of the outlet 311 of fluid mouth 31, distortion or fracture phenomena appear easily, the difficulty that the outlet 311 that has increased fluid mouth 31 and plastic seal 7 seal mutually, be prone to leakage phenomenon, in addition, the raw material of filler and gas are from exporting the out of proportion of 311 ejections, make the weak effect of foam filling agent foaming (expansion), gas release is few, has increased consumption, has wasted resource, simultaneously, very easily cause the danger of burning or blast.

The outlet 311 of fluid mouth 31 has the aperture preferred size of part at least between 1.7 millimeters～2.3 millimeters, and the preferred size that the endoporus of the outlet 311 of perhaps described fluid mouth 31 has the cross section of maximum transversal length N is between 1.7 millimeters～2.5 millimeters.

The endoporus that the size that outlet 311 endoporus has a cross section of maximum transversal length is meant outlet is except that circle during other shape, the size of the cross section of the endoporus lateral length maximum that (outlet is towards the top) recorded when fluid mouth 31 was vertical, can be ellipse or regular polygon or erose a kind of etc. such as, the cross section of endoporus.

The thickness of the outlet 311 of fluid mouth 31 is between 0.5 millimeter～5 millimeters, it is strong that foam filling agent is sprayed, concentrate and safety, foaming effect is good, because spool 32 and fluid mouth 31 elastic force by back-moving spring 33 makes between them and seals mutually, this thickness has prevented to export 311 sealing place and distortion occurred or break and cause and leak foam filling agent or gaseous phenomena, during construction, avoided causing foam filling agent dispersion to occur or transverse injection causes serious consequence because of thickness is too thin, also avoided making outlet 311 put aside residue easily and clogging occurred because of thickness is too thick, safe in utilization, construction quality is good, and the preferred thickness of the outlet 311 of fluid mouth 31 is between 0.5 millimeter～3.0 millimeters.

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, promote closure member 22 and open by self having pressure 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, the plastic seal 7 that is provided with on the protuberance 321 of spool 32 heads and/or recess 322 or the screw thread seals mutually with the effect of fluid mouth 31 by back-moving spring 33, 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 seal and occurred wearing and tearing or loosening or distortion or obscission easily, prolonged service life.Referring to Fig. 4 and Fig. 5, when starting working, Drawing switch device 5 drives spool 32 and moves, the plastic seal 7 of making one with spool 32 leaves the outlet 311 of fluid mouth 31 along with spool 32, make the inner chamber of fluid mouth 31 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 seal to occur wearing and tearing or distortion or loosening or obscission easily, prevented to occur leaking the foam gap filler phenomenon effectively.

Referring to Fig. 6 and Fig. 7, head at spool 32 is provided with shrinkage pool 323, protuberance and interlocking are being set on the plastic seal 7 in the shrinkage pool 323 of spool 32 heads, the fastness height, further, comprise recess 72 or protuberance 73 on the protuberance of plastic seal 7, the flange 3231 that is provided with in recess 72 and the shrinkage pool 323 is halved together, and fastness is higher.

Referring to Fig. 6, the optimal technical scheme that plastic seal 7 is set on the spool 32 is that plastic seal 7 adopts plastics by the die casting machine fusing and be infused in and be embedded with in the mould that has part spool 32 at least, make the plastic seal 7 of formation have at least part to be embedded in the shrinkage pool 323 that is provided with on described spool 32 heads and form the structure of one, its fastness height, difficult drop-off has prevented that effectively phenomenon from appearring leaking or solidifying in the foam filling agent in the liquid valve 3.Further, plastic seal adopts and to comprise that polypropylene or polyethylene or polyformaldehyde or pvc material are by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, make the plastic seal 7 of formation have at least part to be embedded in the shrinkage pool 323 that is provided with on described spool 32 heads and form the structure of one, prevented to occur leaking or solidifying phenomenon effectively.

The external diameter that plastic seal 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 seal 7 has its preferred size of external diameter of part at least.

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

Referring to Fig. 4, stretch out the fixture 61 that internal channel and rifle body 1 connection can be provided with second seal 6 and be used for fixing second seal 6 at spool 32.

Referring to Fig. 4, 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 (24)

1, a kind of foam gun, it comprises rifle body, feed liquor valve, liquid valve, liquid outlet channel and switching device, switching device can make liquid valve open or close, liquid valve comprises fluid mouth, spool and the back-moving spring that has outlet, it is characterized in that: described spool head is provided with the seal that plastics are made, and the all-in-one-piece structure that is connected, described plastic seal seals mutually with described fluid mouth; The aperture that is exported to rare part of described fluid mouth is between 1.5 millimeters～2.5 millimeters, and perhaps, the cross section that the endoporus of the outlet of described fluid mouth has maximum transversal length is of a size of between 1.5 millimeters～3.0 millimeters.

2, according to the described foam gun of claim 1, the aperture that is exported to rare part that it is characterized in that described fluid mouth is between 1.7 millimeters～2.3 millimeters, perhaps, the cross section of the endoporus of the outlet of described fluid mouth with maximum transversal length is of a size of between 1.7 millimeters～2.5 millimeters.

3,, it is characterized in that the thickness of the outlet of described fluid mouth is between 0.5 millimeter～5 millimeters according to claim 1 or 2 described foam guns.

4,, it is characterized in that the thickness of the outlet of described fluid mouth is between 0.5 millimeter～3.0 millimeters according to the described foam gun of claim 3.

5, according to the described foam gun of claim 1, it is characterized in that the head of described spool comprises shoulder, described plastic seal has at least part to be arranged on the described shoulder.

6,, it is characterized in that comprising protuberance or recess or screw thread on the head of described spool or the shoulder that described plastic seal has at least part to be arranged on the protuberance or recess or screw thread of described spool according to claim 1 or 2 or 5 described foam guns.

7, according to the described foam gun of claim 1, it is characterized in that described spool head comprises shrinkage pool, described plastic seal has the part interlocking at least in the shrinkage pool of described spool.

8, according to the described foam gun of claim 7, it is characterized in that being provided with in the described shrinkage pool protuberance or recess or screw thread, described plastic seal has at least in part and the described shrinkage pool protuberance that is provided with or recess or screw thread be connected or blocks.

9, according to the described foam gun of claim 6, it is characterized in that described protuberance comprises annular protrusion or point type protuberance or irregular protuberance, described recess comprises annular recess or point type recess or irregular recess.

10, described according to Claim 8 foam gun is characterized in that described protuberance comprises annular protrusion or point type protuberance or irregular protuberance, and described recess comprises annular recess or point type recess or irregular recess.

11,, it is characterized in that described plastics adopt the material of resistance to chemical attack to make according to the described foam gun of claim 1.

12,, it is characterized in that described plastics comprise polypropylene or polyethylene or polyformaldehyde or pvc material according to claim 1 or 11 described foam guns.

13, according to claim 1 or 2 described foam guns, the head that it is characterized in that described plastic seal stretches in the outlet of described fluid mouth or the outlet of exposing described fluid mouth.

14,, it is characterized in that described spool adopts metal material to make according to claim 1 or 2 described foam guns.

15,, it is characterized in that described spool has at least part to adopt to comprise the Stainless Steel material or comprises and do not embroider iron material or comprise that copper product makes according to the described foam gun of claim 14.

16,, it is characterized in that described spool has the external diameter of part at least between 1.5 millimeters～6 millimeters according to the described foam gun of claim 14.

17,, it is characterized in that described spool has the external diameter of part at least between 2.5 millimeters～4.5 millimeters according to the described foam gun of claim 16.

18,, it is characterized in that described fluid mouth adopts and comprise copper product or comprise the Stainless Steel material or comprise and do not embroider iron material or comprise that Zinc material makes according to claim 1 or 2 described foam guns.

19, according to claim 1 or 2 or 5 or 7 or 8 or 10 or 11 described foam guns, it is characterized in that described plastic seal adopts plastics by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, on the protuberance that makes the plastic seal of formation have at least part to be enclosed in to be provided with on the described spool head or recess or the screw thread and the structure that links into an integrated entity.

20, according to the described foam gun of claim 19, it is characterized in that described plastic seal adopts comprises polypropylene or polyethylene or polyformaldehyde or polyvinyl chloride by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, on the protuberance that makes the plastic seal of formation have at least part to be enclosed in to be provided with on the described spool head or recess or the screw thread and the structure that links into an integrated entity.

21, according to claim 1 or 2 or 5 or 7 or 8 or 10 or 11 described foam guns, it is characterized in that described plastic seal adopts plastics by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, make the plastic seal of formation have at least part to be embedded in the shrinkage pool that is provided with on the described spool head and the structure that links into an integrated entity.

22, according to the described foam gun of claim 21, it is characterized in that described plastic seal adopts comprises polypropylene or polyethylene or polyformaldehyde or polyvinyl chloride by the fusing of plastics machine and be infused in and be embedded with in the mould that has the part spool at least, makes the plastic seal of formation have at least part to be embedded in the shrinkage pool that is provided with on the described spool head and the structure that links into an integrated entity.

23,, it is characterized in that described plastic seal has the external diameter of part at least between 1.5 millimeters～7 millimeters according to claim 1 or 2 described foam guns.

24,, it is characterized in that described plastic seal has the external diameter of part at least between 2.5 millimeters～5 millimeters according to the described foam gun of claim 23.

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