CN201164823Y - Foaming gun - Google Patents

Abstract

The utility model relates to a foam formation gun which comprises a gun body, a liquid inlet valve, a liquid outlet valve, a liquid outlet channel and a switch device. The switch device can enable the liquid outlet valve to open and close; the liquid outlet valve comprises a liquid outlet nozzle with outlets, a valve core and an offsetting spring. The foam formation gun is characterized in that the head part of the valve core is provided with a sealing element made of plastic; the head parts of the valve core and the plastic sealing element are made into an integral structure; the plastic sealing element which is made into an integral structure with the valve core is sealed with the liquid outlet nozzle; the liquid outlet nozzle is made of copper material or stainless steel material or stainless iron material or zincum material, and at least part of the aperture of the outlets of the liquid outlet nozzle ranges from 1.3 mm to 3.0 mm, or the section dimension of the largest transverse length of the inner hole of the liquid outlet nozzle ranges from 1.3 mm to 3.5 mm, thereby effectively preventing and avoiding the leakage and/or solidifying phenomena of the foam caulking agent in the foam formation tool, effectively avoiding and preventing the burning or explosive danger because leakage occurs for the foam caulking agent or the gas, improving the wearing resistance, sealing performance and stability of the sealing element, effectively avoiding the outward leakage of the foam caulking agent caused by abrasion, loosening, deformation, dilapidation, shedding or cauterization resulting from foam caulking agent or abluent, effectively avoiding and preventing the jam phenomena occurred in channels and outlets of the foam formation tool, effectively preventing the liquid outlet nozzle from deforming or breaking caused by the leakage of the foam caulking agent or the gas.

Description

A kind of foam gun

Technical field

The utility model relates to a kind of foam gun that is used to 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, 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 a kind of 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 a kind of 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 a kind of foam gun, the foam gap filler that ejects foams back curing and is bonded in needed place, so, in the process of constructing by a kind of foam gun, a kind of sealing of foam gun must be a high request, especially the sealing stability of liquid valve is even more important in a kind of foam gun, after on the feed liquor valve at a kind of 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 a kind of foam gun can solidify at any time or endlessly outwards overflow or spray, cause a kind of 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.

A kind of 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 when construction, be easy to the sealing ring in pulling (adhesion) fluid mouth, cause sealing ring wearing and tearing or loosening or distortion or obscission to occur, in addition, spool is constantly movable back and forth when construction, the head of spool is stabbing the inboard of sealing ring easily, be easy to make sealing ring disrepair phenomenon to occur, so, still exist and leak foam gap filler or gas or the foam filling agent phenomenon that is cured, shortened a kind of service life of foam gun.

Summary of the invention

The purpose of this utility model 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 a kind of foam gun a kind of foam gun of phenomenon to occur leaking and/or solidifying.

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

Another purpose of the present utility model is to prevent effectively and avoided passage or outlet in a kind of foam gun clogging to occur, has prolonged service life.

Another purpose of the present utility model 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 purpose of the present utility model is to have prevented that effectively disrepair phenomenon from appearring in seal.

Another purpose of the present utility model 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 purpose of the present utility model is to have improved the gas release and the quality of foam gap filler, has reduced cost, has saved resource, has prolonged service life, and safe in utilization, cleaning is fit to produce in enormous quantities.

In order to realize the foregoing invention purpose, the utility model 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: the head of described spool is provided with the seal that plastics are made, the head of described spool and described plastic seal are made the structure of one, and plastic seal and the described fluid mouth of making one with described spool seal mutually; 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, the aperture that is exported to rare part of described fluid mouth is between 1.3 millimeters～3.0 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 1.3 millimeters～3.5 millimeters.

The aperture that is exported to rare part of preferred 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.

Described spool adopts and comprises stainless steel material or comprise the stainless iron material or comprise that copper product makes.

The head of described spool comprises protuberance or comprises recess or comprise screw thread or comprise shrinkage pool, and described plastic seal has protuberance that part and described spool head comprise or recess or screw thread or the shrinkage pool all-in-one-piece structure that is connected at least.

The head of described spool comprises shoulder, and described protuberance or recess or screw thread are arranged on the described shoulder.

Comprise flange or recessed edge or screw thread in the shrinkage pool of described spool head setting, described plastic seal has at least in part and the described shrinkage pool flange that is provided with or recessed edge or threads engaged be connected or blocks.

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

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.

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

Described plastics adopt and comprise polypropylene material or comprise polythene material or comprise polyformaldehyde material or comprise pvc material.

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.

The outlet of described fluid mouth is exposed in the end of described plastic seal.

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 and/or recess and/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 and/or recess and/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.

Adopt the utility model of technique scheme, prevent effectively and avoided the foam gap filler in a kind of foam gun phenomenon to occur leaking and/or solidifying; 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 or damaged 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 effectively to external leakage; Prevent effectively and avoided passage or outlet in a kind of foam gun clogging to occur; 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 a kind of embodiment of the utility model.

Fig. 2 emphasis illustrates the local structure for amplifying schematic diagram of fluid mouth among Fig. 1, liquid outlet channel, plastic seal 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.

Fig. 4 emphasis illustrates the be halved together local structure for amplifying schematic diagram of another kind of embodiment of part of plastic seal and spool.

Fig. 5 illustrates the structural representation when plastic seal and spool decompose among Fig. 4.

Fig. 6 is the structural representation during liquid valve duty (opening) among Fig. 1.

Fig. 7 emphasis illustrates the local structure for amplifying schematic diagram of fluid mouth among Fig. 6, liquid outlet channel, plastic seal and spool part.

Fig. 8 emphasis illustrates the local enlarged diagram of the another kind of structure of fluid mouth, liquid outlet channel, plastic seal and spool part.

Structural representation when Fig. 9 illustrates the plastic seal of interlocking in the shrinkage pool of spool with the spool decomposition for emphasis among Fig. 8.

Among the figure

The recessed edge 72-of 1-rifle body 2-liquid feed valve 21-liquid inlet port 22-closure member 23-the second back-moving spring 3-liquid valve 31-liquid outlet 311-outlet 32-spool 321-protuberance 322-recess 323-screw thread 324-shrinkage pool 3241-flange 3242-recessed edge 325-shoulder 33-back-moving spring 4-liquid outlet channel 5-switching device 6-the second seal 61-fixture 7-plastic seal 70-shrinkage pool 71-flange 73-recess 74-the second protuberance 75-screw thread 76-the second shoulder 77-end 8-adjuster

The specific embodiment

A kind of foam gun of the present utility model, referring to whole accompanying drawings, it comprises rifle body 1, feed liquor valve 2, liquid valve 3, liquid outlet channel 4 and switching device 5, liquid valve 3 comprises the fluid mouth 31 that has outlet 311, spool 32 and back-moving spring 33, switching device 5 can make liquid valve 3 open or close, such as, spool 32 has at least part to stretch out a kind of internal channel of foam gun, switching device 5 can be acted on the described spool 32 directly or indirectly, make spool 32 generation activities, the head of described spool 32 is provided with the seal 7 that plastics are made, the head of described spool 32 and described plastic seal 7 are made the structure of one, and the plastic seal 7 of making one with described spool 32 seals mutually with described fluid mouth 31; Described fluid mouth 31 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, the outlet 311 of described fluid mouth 31 has the aperture of part at least between 1.3 millimeters～3.0 millimeters, perhaps, the cross section that the endoporus of the outlet 311 of described fluid mouth 31 has maximum transversal length is of a size of between 1.3 millimeters～3.5 millimeters, prevent effectively and avoided foam gap filler in a kind of foam gun occur to leak and/or solidify phenomenon, prevented that effectively clogging from appearring in passage or outlet, prevent and avoided foam gap filler in a kind of foam gun or gas to occur leaking effectively or the danger of burning or blast, improved the wearability of seal, sealing and stability, wearing and tearing or loosening or distortion or damaged or come off and cause a kind of foam gun to leak foam gap filler or gaseous phenomena have been avoided occurring effectively, resistance to corrosion is strong, even cleaned by foam filling agent immersion or cleaning agent, plastic seal can not occur being corroded or loosening or distortion or breakage or obscission yet, and cause leakage, 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. 6 and Fig. 7, 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. 6), 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 76, stablize and sealing mutually to heavens with the outlet 311 of fluid mouth 31 on inclined-plane on second shoulder 76 or plane, and the outlet 311 of described fluid mouth 31 is exposed in the end 77 of plastic seal 7, can clear up fluid mouth 31 in time and/or export solidfied material residual in 311 or dirt, prevented that long service life from clogging appearring, in outlet 311; 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 is blocked (referring to Fig. 2) when being integral mutually, the fastness height, prevent and avoided occurring obscission effectively, make the plastic seal 7 and fluid mouth 31 sealing mutually stably that are provided with on the spool 32, 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 a kind of foam gun internal channel.Referring to Fig. 3, the head of spool 32 is provided with shoulder 325, it is preferred structure that protuberance 321 and/or recess 322 and/or screw thread are set on shoulder 325, make plastic seal 7 can make the less diameter all-in-one-piece structure that is connected with spool 32, convenient the fastness height is installed, good sealing effect, more improve the flow velocity of foam filling agent, improved gas release and quality, saved resource.Especially spool adopts and to comprise stainless steel material or comprise the stainless iron material or comprise that copper product makes, protuberance 321 that is provided with on the spool that spool that spool that plastic seal 7 and stainless steel material are made or stainless iron material are made or copper product are made and/or recess 322 and/or the screw thread all-in-one-piece structure that is connected, fastness and intensity are higher, wear-resistant, not perishable, be difficult for getting rusty, leak resistance is good, plastic seal 7 has solved distortion or loosening or breakage or obscission that the larger-diameter sealing ring of common employing occurs easily effectively along with spool 32 activities.

Referring to Fig. 2 and Fig. 3, described protuberance 321 is an annular protrusion, also can be the point type protuberance, also can be for irregular protuberance a kind of etc., described recess 322 can be annular recess, also can be the point type recess, also can be for irregular recess a kind of 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 70 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 employing comprise the spool 32 of stainless steel material or stainless iron material or copper product 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 injection molded have at least part closely to be enclosed in to be provided with on the shoulder 325 of spool 32 heads and/or the annular recess 322 and/or on the screw thread, the all-in-one-piece structure thereby the spool 32 that has formed employing stainless steel material or stainless iron material or copper product is connected with plastic seal 7, solve seal and occurred wearing and tearing or loosening or distortion or breakage or obscission easily, prevent effectively and avoided occur leaking foam gap filler or gaseous phenomena, prolonged service life.The optimal technical scheme of plastic seal 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/or the recess 322 and/or on the screw thread and the structure that links into an integrated entity.

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 1.3 millimeters～3.0 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 1.3 millimeters～3.5 millimeters (referring to Fig. 7), 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 1.3 millimeters or export 311 endoporus N less than 1.3 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 3.0 millimeters or export 311 endoporus N greater than 3.5 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 1.5 millimeters～2.5 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 1.5 millimeters～3.0 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 311 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 a kind of foam gun of needs is constructed, the filling body that will have a foam gap filler is packed on a kind of feed liquor valve 2 of foam gun, at this moment, promote closure member 22 and open liquid inlet port 21 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 and/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 breakage or obscission easily, prolonged service life.Referring to Fig. 6 and Fig. 7, 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 breakage or obscission easily, prevented to occur leaking the foam gap filler phenomenon effectively.

Referring to Fig. 4 and Fig. 5, on the shoulder 325 of spool 32 screw thread 323 is set, shrinkage pool 70 is set on plastic seal 7, screw thread 75 is set on the madial wall of shrinkage pool 70, its optimal technical scheme is that employing is comprised that the spool 32 that stainless steel material or stainless iron material or copper product are made has at least part to be embedded in the mould of processing plastic seal, by the plastics machine with plastic molting and inject mould, make the plastic seal 7 of injection molded have at least part closely to be enclosed on the screw thread 323 that is provided with on the shoulder 325 of spool 32 heads, make and also form the screw thread 323 that is provided with on screw thread 75 and the spool 32 in the plastic seal 7 and match and be connected (interlocking) all-in-one-piece structure (referring to Fig. 4), thereby formed the spool 32 all-in-one-piece structure that is connected with plastic seal 7, prevent effectively and avoided occur leaking foam gap filler or gaseous phenomena, prolonged service life.The optimal technical scheme of plastic seal ring 7 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, makes the plastic seal 7 of formation have at least part to be enclosed on the screw thread 323 that is provided with on described spool 32 heads and connects the structure of one.Further, recess 322 and screw thread 323 can also be set on shoulder 325, comprise on plastic seal 7 that screw thread 75 matches with recess 322 with screw thread 323 with flange 72 to be connected, improve plastic seal 7 more and be connected fastness on spool 32 heads.

Referring to Fig. 8 and Fig. 9, head at spool 32 is provided with shrinkage pool 324, rabbet in the shrinkage pool 324 of spool 32 heads at the protuberance that is provided with on the plastic seal 7, the fastness height, further, on the protuberance of plastic seal 7, comprise the recess 73 and second protuberance 74, be halved together that fastness is higher with the flange 3241 and the recessed edge 3242 that are provided with in the shrinkage pool 324.

Referring to Fig. 8, 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 324 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 324 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.

The technical solution of the utility model, a kind of foam gun of applicable any structure, such as a kind of foam gun that is applicable to split-type structural, the locking mechanism that can lock or divide shooting body and foam device that a kind of 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 utility model has been made detailed description; but those of ordinary skill obviously can be recognized in the art; previous embodiment only is for the utility model; and non-limiting the utility model; in design scope of the present utility model; 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 (16)

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: the head of described spool is provided with the seal that plastics are made, the head of described spool and described plastic seal are made the structure of one, and plastic seal and the described fluid mouth of making one with described spool seal mutually; 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, the aperture that is exported to rare part of described fluid mouth is between 1.3 millimeters～3.0 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 1.3 millimeters～3.5 millimeters.

2, according to the described a kind of foam gun of claim 1, the aperture that is exported to rare part that it is characterized in that described fluid mouth is between 1.5 millimeters～2.5 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 1.5 millimeters～3.0 millimeters.

3,, it is characterized in that described spool adopts and comprise stainless steel material or comprise the stainless iron material or comprise that copper product makes according to the described a kind of foam gun of claim 1.

4, according to claim 1 or 2 or 3 described a kind of foam guns, the head that it is characterized in that described spool comprises protuberance or comprises recess or comprise screw thread or comprise shrinkage pool, and described plastic seal has protuberance that part and described spool head comprise or recess or screw thread or the shrinkage pool all-in-one-piece structure that is connected at least.

5, according to the described a kind of foam gun of claim 4, it is characterized in that the head of described spool comprises shoulder, described protuberance or recess or screw thread are arranged on the described shoulder.

6, according to the described a kind of foam gun of claim 4, it is characterized in that comprising flange or recessed edge or screw thread in the shrinkage pool of described spool head setting that described plastic seal has at least the flange that is provided with in part and the described shrinkage pool or recessed edge or threads engaged to be connected or blocks.

7, according to the described a kind of foam gun of claim 4, it is characterized in that described protuberance comprises a kind of of annular protrusion or point type protuberance or irregular protuberance, described recess comprises a kind of of annular recess or point type recess or irregular recess.

8,, 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 or 3 described a kind of foam guns.

9, described according to Claim 8 a kind of foam gun is characterized in that the thickness of the outlet of described fluid mouth is between 0.5 millimeter～3.0 millimeters.

10,, it is characterized in that described spool has the external diameter of part at least between 1.5 millimeters～6 millimeters according to claim 1 or 2 or 3 described a kind of foam guns.

11,, 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 a kind of foam gun of claim 10.

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

13,, it is characterized in that described plastics adopt and comprise polypropylene material or comprise polythene material or comprise polyformaldehyde material or comprise pvc material according to claim 1 or 12 described a kind of foam guns.

14,, 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 12 described a kind of foam guns.

15,, 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 a kind of foam gun of claim 14.

16,, it is characterized in that the end of described plastic seal exposes the outlet of described fluid mouth according to claim 1 or 2 or 3 or 12 described a kind of foam guns.

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