CN104226558A

CN104226558A - Foam joint filling gun

Info

Publication number: CN104226558A
Application number: CN201410267415.5A
Authority: CN
Inventors: 王良
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-06-11
Filing date: 2014-06-10
Publication date: 2014-12-24
Anticipated expiration: 2034-06-10
Also published as: PL415873A1; RU2650924C2; CN104226558B; UA118561C2; RU2015154758A; PL230774B1; WO2014198218A1

Abstract

The invention relates to a foam joint filling gun which comprises a gun body, a liquid feeding valve, a liquid discharging valve and a switching device, wherein the liquid feeding valve comprises a liquid feeding channel, a closing piece and a resetting spring; the liquid feeding channel is sealed by the closing piece, and a closed opening is formed in the liquid feeding channel; a closing band is formed on the closing piece; a pushing piece for pushing the closing piece to downwards move is arranged in the liquid feeding channel and positioned above the closed opening; under downward thrust, the pushing piece pushes the closing piece to downwards move to open the liquid feeding channel, so that the pushing piece controls a stable distance to be kept between the closing band and the closed opening; under a condition of no downward thrust on the closing piece, the closing piece seals the liquid feeding channel due to the elasticity of the resetting spring. The foam joint filling gun can realize pre-foaming, achieve a relatively good joint filling and repairing effect and protect objects and is uniform in foaming and large in foaming amount, and resources are saved.

Description

Foam caulking gun

Technical field

The present invention relates to construction and decoration technical field of tools, particularly relate to a kind of foam caulking gun.

Background technology

Foam gap filler generally can adopt polyurethane to be primary raw material, also other chemicals can be adopted to be primary raw material, polyurethane foams full name sealing agent of single component polyurethane foam, being commonly called as blowing agent, foamed glue, PU gap filler (being called for short " PU FOAM "), is the product that aerosol technology and polyurethane foam technology intersection combine.It is a kind of special polyurethane products components such as polyurethane prepolymer, blowing agent, catalyst filled in withstand voltage inhalator jar.When material sprays from inhalator jar, the polyurethane materials of foam shape can undergoes rapid expansion form foam with the moisture generation curing reaction in air or the matrix that touches.Foam after solidification has the multi-effects such as joint filling, bonding, sealing, heat insulation, sound-absorbing, a kind of environmental protection and energy saving, construction material easy to use, be applicable to sealing and plugging, fill a vacancy squeegee, fixing bonding, heat preservation and soundproof, be particularly useful for plastic-steel or the sealing and plugging between aluminum alloy doors and windows and body of wall and waterproof.

Cranny filler of polyurethane foam is a kind of polyurethane products based on high-expansion, also quick-setting a kind of joint filling can squeegee with product by undergoes rapid expansion, can use in a humid environment after jar ejection.

The range of application of foam gap filler: be generally used for wide interface, gap, the sealing in crack, insulation, filling, can be incubated, cold-resistant, resistance to drying, sound insulation and protection against the tide.Gap between picture dividing plate and ceiling, window frame, doorframe, hole between the walls, the gap between roof and chimney, the sealing around wall, ceiling, roof pipeline and the hole on wall and breakage.Can be used for the bonding of multiple material, as metal, timber, stone material, concrete and multiple synthetic material, as polyester, polystyrene foam plastics, PVC plastic, hard polyurethane foamed plastics.

The concrete purposes of foam gap filler: (1) is about the erection of doors and windows in building and house: the joint filling sealing between door and window and body of wall, fixing bonding, exterior wall bonding etc.; (2) sound insulation is eliminated the noise: the gap during finishing such as speech room, broadcasting studio is filled up, and can play sound insulation noise elimination effect etc.; (3) ordinary maintenance: the repairing on hole, gap, wall brick, floor tile, floor, auto sound, heat insulation, insulation, filling etc.; (4) waterproofing and leakage-stopping: the repairing of the leak such as water supply pipe, sewer, leak stopping; (5) packed and transported: can be wrapped up by valuable delicate articles easily, saves time quick, shock-proof pressure-tight; (6) advertising model: the making of model, sand table, panel is repaired; (7) gardening makes scape: flower arrangement, gardening make scape, light and beautiful.Generally all adopting with anticyclonic foam gap filler is raw material.

When material sprays from foam caulking gun, the material of foam shape can undergoes rapid expansion form foam with the moisture generation curing reaction in air or the matrix that touches, for joint filling or mending-leakage etc., clogging is there is in order to prevent the internal channel of foam caulking gun, after using, foam gap filler remaining in foam caulking gun internal channel is cleaned by the cleaning agent be equipped with in holding vessel, the inlet of foam caulking gun normally adopts closure seals, closure member to be automatically reset sealing by back-moving spring, when the holding vessel with foam gap filler loads onto foam caulking gun, the pressure that foam gap filler produces by self pushes closure member open, thus make the foam gap filler in holding vessel enter in the internal channel of foam caulking gun, push closure member due to foam gap filler open by the pressure that self produces to open passage and enter rifle body internal channel, like this, passage open be generally very little or occur time close phenomenon when opening, make the injection of foam gap filler more or less, have impact on foaming effect, cause the foaming of foam gap filler uneven, greatly reduce gas release simultaneously, if the foam gap filler in holding vessel uses a half, pressure in holding vessel reduces more, like this, the injection of foam gap filler is more not smooth, more easily there is intermittent phenomenon, cause the foaming of foam gap filler uneven, cause the of poor quality of foamed, greatly reduce gas release simultaneously, in addition, this structure is easy to occur post blow phenomena, post-foaming is exactly little by little thicker after foam gap filler ejection, several times are slightly gone out than when being up to, so just be difficult to allow workman grasp the strength of triggering pulling on hand (switch), easy waste foam gap filler, minimal waste 1/3, cost is very high, easily make door and window be out of shape after the foam gap filler solidification of expanding afterwards worse or squeeze bad door and window.

Existing foam caulking gun, when the holding vessel of foam gap filler combines with described foam caulking gun, need interval to use after using or be not also finished or be finished rear holding vessel when also not unloading, feed pathway is in closure member the state of contacting, that is easily there is gum deposit because of self-closed and cause bonding phenomenon in them, that is easily occurs clogging.

Summary of the invention

Technical problem to be solved by this invention is to provide a kind of foam caulking gun, can produce front foaming, has both reached the effect that better joint filling is squeegeeed, and can protect object again, uniform in foaming, and foamed amount is large, economizes on resources.

Wherein, front foaming, be exactly that foam gap filler ejection rear more than 80% is foamed, the amplitude foamed below is very little, uniform in foaming, and foamed amount is large.

Another object of the present invention is that the holding vessel of foam gap filler is when combining with described foam caulking gun, need interval to use after using or be not also finished or be finished rear holding vessel when also not unloading, stable spacing can be kept between feed pathway and closure member, effectively prevent between feed pathway and closure member and easily occur gum deposit because of usual self-closed and cause bonding phenomenon, avoid the foam caulking gun easily occurring clogging, extend service life widely.

Another object of the present invention is that the foam caulking gun preventing first time to spray foam gap filler makes foam gap filler remaining in rifle body occur regurgitating phenomenon when second time then uses because feed pathway opens too early.

Another object of the present invention is that the holding vessel two kinds of different structures of the holding vessel and cleaning agent that efficiently avoid foam gap filler are arranged on not interaction that same foam caulking gun brings and cause cleaning leakage or cleaning difficulty maybe cannot clean.

Another object of the present invention to change impeller, convenient disassembly and safe and reliable, and use cost is low.

The technical solution adopted for the present invention to solve the technical problems is: provide a kind of foam caulking gun, comprise rifle body, liquid feed valve, liquid valve and switching device, liquid feed valve comprises feed pathway, closure member and back-moving spring, described closure member and feed pathway seal mutually and form close mouth in described feed pathway inside, described closure member forms confining zone, the described feed pathway inside be positioned at above described close mouth is arranged for promoting the impeller that described closure member moves down, when described impeller is subject to downward thrust, promote described closure member to move down and open described feed pathway, described impeller is made to control to keep stable spacing between described confining zone and described close mouth, when described closure member is not subject to downward thrust, described closure member because of described back-moving spring resilient seal described in feed pathway.

The escapement for preventing described impeller from coming off also is provided with in feed pathway above described close mouth.

It is the thrust that in external foam gap filler holding vessel, liquid outlet is downward that described impeller is subject to downward thrust; Or described impeller to be subject to downward thrust be the thrust that in the holding vessel of cleaning agent, liquid outlet is downward, when described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, described closure member opens described feed pathway by stressed the moving down of mode of driving or air pressure self-action.

Described feed pathway is loaded onto with the liquid outlet in foam gap filler holding vessel when described, and contact with described impeller and make the liquid outlet in described holding vessel promote described impeller when moving down, the thrust that described closure member is subject to described impeller moves down opens described feed pathway, described impeller is made to control to keep stable spacing between described confining zone and described close mouth, when described leave described impeller with the liquid outlet in foam gap filler holding vessel exits time, described closure member seals described feed pathway because of the elastic force of back-moving spring.

Described feed pathway inside is provided with the first spacing shoulder cooperatively interacted with liquid outlet in external foam gap filler holding vessel, described first spacing shoulder is for extruding the liquid outlet in described foam gap filler holding vessel, make the liquid outlet in described holding vessel move to described holding vessel direction and open the liquid outlet in described holding vessel, described foam gap filler is sprayed from the liquid outlet of described holding vessel and enters in described feed pathway.

Described impeller is positioned at the below of described first spacing shoulder.

Described impeller is provided with at least one groove or groove or through hole, when described with foam gap filler holding vessel in liquid outlet combine with described feed pathway time, described groove or groove or through hole communicate with the outlet of liquid outlet in foam gap filler holding vessel with described, and described groove or groove or through hole communicate with the described feed pathway be positioned at below described close mouth.

Described escapement is spring, and described spring one end sticks described impeller, and the described spring other end is fixed in described feed pathway.

The described spring other end is fixed on the inwall of described feed pathway.

Described escapement is spacing salient point for limiting described impeller displacement or defining flange.

Described spacing salient point or defining flange are positioned at the below of described first spacing shoulder.

Described impeller has at least part to be blocked by described spacing salient point or defining flange.

Described escapement is the stop collar for limiting impeller movement, and described stop collar is fixed on the inwall of described feed pathway.

Described stop collar has mating holes, and the diameter compatible of described mating holes and described impeller closes and makes described stop collar be socketed on described impeller, and the diameter that described impeller stretches out the tip portion of mating holes is greater than the aperture of described mating holes.

Described closure member opens described feed pathway by stressed the moving down of the mode of air pressure self-action, when described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, described cleaning agent utilizes the pressure of self automatically push described closure member open and clean foam gap filler remaining in described foam caulking gun, when the liquid outlet in described cleaning agent holding vessel exits and leaves described feed pathway, described closure member seals described feed pathway because of the elastic force of back-moving spring.

When described external load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, the liquid outlet in described external cleaning agent holding vessel does not contact with described impeller.

When described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel and lean against on described first spacing shoulder time, holding vessel with cleaning agent continues to move down, described first spacing shoulder is made to extrude liquid outlet in described cleaning agent holding vessel, the liquid outlet in described holding vessel is made to move to described holding vessel direction and open the liquid outlet in described holding vessel, described cleaning agent is sprayed from the liquid outlet described holding vessel to be entered in described feed pathway, described cleaning agent utilizes the pressure of self automatically push described closure member open and clean foam gap filler remaining in described foam caulking gun.

Described closure member opens described feed pathway by stressed the moving down of the mode of driving, when described with the liquid outlet in cleaning agent holding vessel load onto described feed pathway contact with described impeller and make the liquid outlet in holding vessel promote described impeller move down time, the thrust that described closure member is subject to described impeller moves down opens described feed pathway, described cleaning agent is sprayed from the liquid outlet of described holding vessel to be entered in described feed pathway, described cleaning agent cleans foam gap filler remaining in described foam caulking gun, when the liquid outlet in described cleaning agent holding vessel exits and leaves described feed pathway, described closure member seals described feed pathway because of the elastic force of back-moving spring.

Described feed pathway inside is provided with the second spacing shoulder cooperatively interacted with the liquid outlet of external cleaning agent holding vessel, described second spacing shoulder is positioned at the below of described first spacing shoulder, the diameter of described second spacing shoulder is less than the diameter of described first spacing shoulder, and described second spacing shoulder is for extruding the liquid outlet of described cleaning agent holding vessel.

Described closure member adopts ball.

Sealed mutually by sealing ring between described closure member with described feed pathway.

Described sealing ring is fixed in described feed pathway.

Described sealing ring is fixed on described closure member.

Recess is made on the top of described impeller.

Described recess is provided with groove or through hole.

The lateral section of described impeller is T-shaped or dry font.

The plan structure of described impeller is three heel brace shapes, four heel brace shapes, five heel brace shapes or six heel brace shapes.

Described closure member is spheroidal, and the bottom of described impeller arranges the concave surface matched with described closure member.

Described concave surface is concaved circular cambered surface.

Described impeller and feed pathway are demountable structure.

Described impeller and escapement and described feed pathway are demountable structure.

Described escapement is spring, and described impeller and spring and described feed pathway are dismountable structure.

Beneficial effect

Owing to have employed above-mentioned technical scheme, the present invention compared with prior art, has following advantage and good effect: the present invention can produce front foaming, has both reached the effect that better joint filling is squeegeeed, and can protect object again, uniform in foaming, and foamed amount is large, economizes on resources; When the holding vessel of foam gap filler combines with described foam caulking gun, need interval to use after using or be not also finished or be finished rear holding vessel when also not unloading, stable spacing can be kept between feed pathway and closure member, effectively prevent between feed pathway and closure member and easily occur gum deposit because of usual self-closed and cause bonding phenomenon, avoid the foam caulking gun easily occurring clogging, extend service life widely; The foam caulking gun preventing first time to spray foam gap filler makes foam gap filler remaining in rifle body occur regurgitating phenomenon when second time then uses because feed pathway opens too early; Holding vessel two kinds of different structures of the holding vessel and cleaning agent that efficiently avoid foam gap filler are arranged on not interaction that same foam caulking gun brings and cause cleaning leakage or cleaning difficulty maybe cannot clean; Can change impeller, convenient disassembly and safe and reliable, use cost is low.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of embodiment of foam caulking gun of the present invention.

Fig. 2 is the structural representation before Fig. 1 foam caulking gun combines with the holding vessel with foam gap filler.

Fig. 3 is the structural representation of Fig. 2 foam caulking gun when combining with the holding vessel with foam gap filler.

Fig. 4 is the structural representation of Fig. 1 foam caulking gun when combining with the holding vessel with cleaning agent.

Fig. 5 is independently with the structure enlarged diagram of the impeller of 4 feets in Fig. 1.

Fig. 6 is the schematic top plan view of Fig. 5.

Fig. 7 is the schematic perspective view of Fig. 5.

Fig. 8 is structure enlarged diagram when independently combining with the impeller of 4 feets and spring in Fig. 1.

Fig. 9 is the structure enlarged diagram of the embodiment of similar Fig. 5.

Figure 10 is the structure enlarged diagram of the impeller embodiment with 3 feets of similar Fig. 5.

Figure 11 is the schematic diagram of Fig. 1 foam caulking gun when separating with the impeller in foam caulking gun and spring.

Figure 12 is the structural representation of another kind of foam caulking gun embodiment.

Figure 13 is the structural representation of another kind of foam caulking gun embodiment.

Figure 14 is the structural representation of another kind of foam caulking gun embodiment.

Figure 15 is the structural representation of another kind of foam caulking gun embodiment.

Figure 16 is the structural representation of another kind of foam caulking gun embodiment.

Figure 17 is the structural representation of Figure 16 foam caulking gun when combining with the holding vessel with foam gap filler.

Figure 18 is the structural representation of Figure 16 foam caulking gun when combining with the holding vessel with cleaning agent.

Figure 19 is the structural representation of another kind of foam caulking gun embodiment.

Figure 20 is the structural representation of another kind of foam caulking gun embodiment.

Figure 21 for impeller described in Figure 20 be subject to downward thrust time, open the structural representation of closure member.

Figure 22 is the structural representation of another kind of foam caulking gun embodiment.

Figure 23 for impeller described in Figure 22 be subject to downward thrust time, open the structural representation of closure member.

Figure 24 is the structural representation of another kind of foam caulking gun embodiment.

Figure 25 for impeller described in Figure 24 be subject to downward thrust time, open the structural representation of closure member.

Figure 26 is the structural representation of another kind of foam caulking gun embodiment.

Figure 27 for impeller described in Figure 26 be subject to downward thrust time, open the structural representation of closure member.

Figure 28 is the independently structure for amplifying schematic diagram that matches of impeller and stop collar in Figure 27.

Figure 29 is independently impeller plan structure schematic diagram in Figure 27 or Figure 28.

Figure 30 is the perspective view of independently impeller in Figure 28.

Figure 31 is the plan structure schematic diagram of independently stop collar in Figure 28.

Figure 32 is the structural representation of another kind of foam caulking gun embodiment.

Figure 33 is the structural representation of Figure 32 foam caulking gun when combining with the holding vessel with foam gap filler.

Figure 34 is the structural representation of Figure 32 foam caulking gun when combining with the holding vessel with cleaning agent.

Figure 35 is independently with the structure enlarged diagram of the impeller of 4 feets in Figure 32.

Figure 36 be Figure 32 overlook enlarged diagram.

Figure 37 is the three-dimensional enlarged diagram of Figure 32.

In figure:

1----rifle body 10----sealing ring

2----liquid feed valve 21----feed pathway 210----close mouth 211,211 '---the spacing shoulder 22,22 ' of-spacing shoulder 212---second----closure member 220---confining zone 23----back-moving spring 25,25 '----sealing ring 26----fixture 27----screw thread 28----neck bush 29----sealing ring

3----liquid valve 31----liquid outlet 32----spool 33----second back-moving spring

4----switching device

5,51,52,53,54,55----impeller 510----tip portion 530,530 '----through hole

551,552,553,554,551 ', 552 ', 553 ', 554 '----groove 56----recess 57,57 '---arc surface

61----spring 62,62 '----defining flange 63----stop collar 630----mating holes

7---is with the liquid outlet 720----liquid outlet 721----sealing ring 722----shoulder in the holding vessel 71---tank body 72-----holding vessel of foam gap filler

8---is with the liquid outlet 820----liquid outlet 821---sealing ring in the holding vessel 81---tank body 82-----holding vessel of cleaning agent

91,92,93,94---through hole

Detailed description of the invention

Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.

See whole accompanying drawing, a kind of foam caulking gun, described foam caulking gun is circumscribed with the holding vessel 7 of foam gap filler, and with liquid outlet 72 in the holding vessel 7 of described foam gap filler, described foam caulking gun comprises rifle body 1, liquid feed valve 2, liquid valve 3 and switching device 4, liquid feed valve 2 comprises feed pathway 21, closure member (22, 22 ') and back-moving spring 23, closure member (22, 22 ') seal with feed pathway 21 phase and form close mouth 210, at described closure member (22 in described feed pathway 21 inside, 22 ') upper formation confining zone 220, described feed pathway 21 inside be positioned at above described close mouth 210 is arranged for promoting described closure member (22, 22 ') impeller (5 moved down, 51, 52, 53, 54, 55), described impeller (5, 51, 52, 53, 54, 55), when being subject to downward thrust, described closure member (22 is promoted, 22 ') move down and open described feed pathway 21, make described impeller (5, 51, 52, 53, 54, 55) control to keep stable spacing between described confining zone 220 and described close mouth 210, described closure member (22, 22 ') when not being subject to downward thrust, described closure member (22, 22 ') because of described back-moving spring 23 resilient seal described in feed pathway 21, make described impeller (5, 51, 52, 53, 54, 55) control to keep stable spacing between described confining zone 220 and described close mouth 210, make the foam gap filler constant flow in described external holding vessel and move smoothly through described feed pathway to enter in described rifle body, avoid when opening when feed pathway easily occurs and close phenomenon, the effect of foaming before the foam gap filler ejected from liquid valve 3 is reached.When described closure member (22,22 ') is not subject to downward thrust, described closure member (22,22 ') because of described back-moving spring 23 resilient seal described in feed pathway 21, the foam gap filler constant flow in described external holding vessel can be made and move smoothly through described feed pathway to enter in described rifle body, can prevent again described feed pathway from occurring the phenomenon of leakage, it is the foam caulking gun of foaming before a kind of can generation, both the object that better joint filling is squeegeeed had been reached, object can be protected again, uniform in foaming, foamed amount is large, economizes on resources; When the holding vessel of foam gap filler combines with described foam caulking gun, need interval to use after using or be not also finished or be finished rear holding vessel when also not unloading, described impeller makes to keep stable spacing between feed pathway and closure member, effectively prevent between feed pathway and closure member and easily occur gum deposit because of usual self-closed and cause bonding phenomenon, avoid the foam caulking gun easily occurring clogging, extend service life widely; Can change impeller, convenient disassembly and safe and reliable, before producing, foaming effect is better, and use cost is low.

Further, the escapement for preventing described impeller (5,51,52,53,54,55) from coming off also is provided with in feed pathway 21 above described close mouth 210, effectively ensure that stability that impeller moves up and down, flexibility and reasonability, prevent described impeller from occurring coming off or dumb phenomenon, more effectively ensure that foam gap filler constant flow in external holding vessel and move smoothly through described feed pathway and enter in described rifle body.

See Fig. 1 to Fig. 7, described foam caulking gun is circumscribed with the holding vessel 7 of foam gap filler, the holding vessel 7 of described foam gap filler comprises tank body 71 and liquid outlet 72, described foam caulking gun comprises rifle body 1, liquid feed valve 2, liquid valve 3 and switching device 4, liquid feed valve 2 comprises feed pathway 21, closure member 22 and back-moving spring 23, closure member 22 and feed pathway 21 phase seal and form close mouth 210 in described feed pathway 21 inside, described closure member 22 forms confining zone 220, described feed pathway 21 inside be positioned at above described close mouth 210 is arranged for promoting the impeller 5 that described closure member 22 moves down, when described impeller 5 is subject to downward thrust, promote described closure member 22 to move down and open described feed pathway 21, described impeller 5 is made to control to keep stable spacing between described confining zone 220 and described close mouth 210, when described closure member 22 is not subject to downward thrust, described closure member 22 because of described back-moving spring 23 resilient seal described in feed pathway 21.Described impeller 5 is made to control to keep stable spacing between described confining zone 220 and described close mouth 210, make the foam gap filler constant flow in described external holding vessel and move smoothly through described feed pathway to enter in described rifle body 1, avoid when opening when feed pathway easily occurs and close phenomenon, the effect of foaming before the foam gap filler ejected from liquid valve 3 is reached, when described closure member 22 is not subject to downward thrust, described closure member 22 because of described back-moving spring 23 resilient seal described in feed pathway 21, the foam gap filler constant flow in described external holding vessel can be made and move smoothly through described feed pathway to enter in described rifle body, can prevent again described feed pathway from occurring the phenomenon of leakage, it is the foam caulking gun of foaming before a kind of can generation, both the object that better joint filling is squeegeeed had been reached, object can be protected again, uniform in foaming, foamed amount is large, economize on resources.

Further, see Fig. 2 and Fig. 3, it is the thrust that in external foam gap filler holding vessel 7, liquid outlet 72 is downward that described impeller 5 is subject to downward thrust, rational in infrastructure, and simply, result of use is good.

Further, see Fig. 1 and Fig. 3, when described with the liquid outlet 72 in foam gap filler holding vessel 7 load onto described feed pathway 21 contact with described impeller 5 and make the liquid outlet 72 in described holding vessel 7 promote described impeller 5 move down time, the thrust that described closure member 22 is subject to described impeller 5 moves down opens described feed pathway 21, described impeller 5 is made to control to keep stable spacing between described confining zone 220 and described close mouth 210, make the foam gap filler constant flow in described external holding vessel and move smoothly through described feed pathway to enter in described rifle body, by opening switching device 4, the effect of foaming before the foam gap filler ejected in the liquid outlet 31 in liquid valve 3 is produced, both the object that better joint filling is squeegeeed had been reached, object can be protected again, in addition, uniform in foaming, foamed amount is large, economize on resources.When described leave described impeller 5 with the liquid outlet 72 in foam gap filler holding vessel exits time, described closure member 22 seals described feed pathway 21 because of the elastic force of back-moving spring 23.

See Fig. 1, Fig. 3, Figure 17 and Figure 33, or whole accompanying drawing, when the storage 7 of foam gap filler combines with described foam caulking gun, need interval to use after using or be not also finished or be finished rear holding vessel when also not unloading, described impeller (5, 51, 52, 53, 54, 55) control to keep stable spacing between described confining zone 220 and described close mouth 210, effectively prevent feed pathway 21 and closure member (22, 22 ') easily there is gum deposit because of common self-closed and cause bonding phenomenon between, avoid the foam caulking gun easily occurring clogging, extend service life widely.

Further again, described feed pathway 21 inside is provided with the spacing shoulder 211 cooperatively interacted with liquid outlet 72 in external foam gap filler holding vessel 7, described spacing shoulder 211 is for extruding the liquid outlet 72 in described foam gap filler holding vessel 7, the liquid outlet 72 in described holding vessel 7 is made to move to described holding vessel 7 direction and open the liquid outlet 72 in described holding vessel 7, described foam gap filler is sprayed from the liquid outlet 72 of described holding vessel 7 to be entered in described feed pathway 21, this structure is simple, rationally, cost is low, described feed pathway 21 is loaded onto with the liquid outlet 72 in foam gap filler holding vessel 7 when external, liquid outlet 72 in described holding vessel 7 promotes described impeller 5 and moves down, described impeller 5 drives described closure member 22 move down and open described feed pathway 21, then, the shoulder 722 in the holding vessel 7 of external foam gap filler, liquid outlet 72 arranged contacts with described spacing shoulder 211, described spacing shoulder 211 is made to extrude shoulder 722 in described holding vessel 7 on liquid outlet 72, the liquid outlet 72 in described holding vessel 7 is made to move to described holding vessel 7 direction and open, the screw thread 27 that can be arranged by described holding vessel 7 and described feed pathway 21 outer rim is spun mutually and produces and moves down, also can be spun mutually by two protuberances that described holding vessel 7 is arranged and described feed pathway 21 outer rim two annular through groove that arrange and produce and move down, also can be that described holding vessel 7 is connected by alternate manner with described feed pathway 21 and produces and moves down, described foam gap filler is sprayed from the liquid outlet 72 described holding vessel 7 to be entered in described feed pathway 21, described impeller 5 is made to control to keep stable spacing between described confining zone 220 and described close mouth 210, avoid when opening when feed pathway easily occurs and close phenomenon, make the foam gap filler constant flow in described external holding vessel 7 and move smoothly through described feed pathway 21 to enter in described rifle body 1, by opening switching device 4, the effect of foaming before the foam gap filler ejected from the liquid outlet 31 of liquid valve 3 is produced, both the object that better joint filling is squeegeeed had been reached, object can be protected again, in addition, uniform in foaming, foamed amount is large, economize on resources.

Further again, preferred described impeller 5 is positioned at the below of described spacing shoulder 211, usually outer rim in the middle part of liquid outlet 72 and partially near liquid outlet 720 is positioned at the shoulder 722 that liquid outlet 72 in the holding vessel 7 of foam gap filler is arranged, that is, usual liquid outlet 720 is positioned at the front of described shoulder 722, see Fig. 1 to Fig. 3, or Figure 10 to Figure 13, or Figure 18 to Figure 25, described impeller is positioned at the below of described defining flange, beneficial effect is, feed pathway 21 is loaded onto with the liquid outlet 72 in the holding vessel 7 of foam gap filler when external, in holding vessel 7, the liquid outlet 720 of liquid outlet 72 just first can promote the impeller be positioned at below described defining flange and moves down when opening feed pathway 21, make the shoulder 722 described in the extruding of described defining flange very soon, liquid outlet 72 in described holding vessel 7 is also opened rapidly, the very successfully ejection from described liquid outlet 72 of described foam gap filler is made to enter in described feed pathway 21, prevent feed pathway 21 from occurring the phenomenon of leakage, also prevent first time used the foam caulking gun of foam gap filler when second time then uses because impeller is opened too early or liquid outlet 72 in holding vessel 7 makes foam gap filler remaining in rifle body occur regurgitating phenomenon after opening late, that is the foam caulking gun preventing first time to spray foam gap filler makes foam gap filler remaining in rifle body occur regurgitating phenomenon when second time then uses because feed pathway opens too early.

Generally, see Fig. 2 and Fig. 3, usually when the external holding vessel 7 with foam gap filler loads onto the feed pathway 21 of foam caulking gun, sealing mutually with the inwall of described feed pathway 21 by liquid outlet 72 in holding vessel 7 being provided with sealing ring 721, preventing from occurring the phenomenon of leakage between liquid outlet 72 and feed pathway 21.

Generally, see Fig. 4, usually when the external holding vessel 8 with cleaning agent loads onto the feed pathway 21 of foam caulking gun, by sealing mutually with the inwall of described feed pathway 21 with liquid outlet 82 in the holding vessel 8 of cleaning agent being provided with sealing ring 821, prevent from occurring the phenomenon of leakage between the liquid outlet 82 in holding vessel and feed pathway 21.

Also sealing ring 10 can be set between spool 32 and rifle body 1, prevent from occurring the phenomenon of leakage between them.

Further, see Fig. 1, Fig. 3, Fig. 5, Fig. 6 and Fig. 7, described impeller 5 is provided with 4 grooves 551, 552, 553, 554 or through hole 530 and 530 ' (see Figure 16 and 17), see Fig. 9, described impeller 5 is provided with 4 grooves 551 ', 552 ', 553 ', 554 ', also with inclined-plane 5510 in the groove of impeller 51 in Fig. 9 with the difference of Fig. 6, 5520, 5530 and 5540, liquid outlet 72 from foam gap filler holding vessel 7 is sprayed and the foam gap filler entered in feed pathway 2 is more smooth and easy and stable, when described with foam gap filler holding vessel 7 in liquid outlet 72 combine with described feed pathway 21 time, described groove or through hole communicate with the liquid outlet 720 of liquid outlet 72 in foam gap filler holding vessel 7 with described, described groove or through hole communicate with the described feed pathway 21 be positioned at below described close mouth 210, beneficial effect makes to pass through without blockage feed pathway 21 with the foam gap filler discharged in foam gap filler holding vessel 7 to enter in rifle body, make foam caulking gun uniform in foaming, foamed amount is large, rational in infrastructure, the effect of foaming before greatly increasing.See Figure 16 and Figure 17 or Figure 18, described impeller 53 is provided with through hole 530, 530 ', impeller 53 also can arrange more than 1 or 2 through hole, also 1 can be arranged, or 2, or more than 2 grooves, when described with foam gap filler holding vessel 7 in liquid outlet 72 combine with described feed pathway 21 time, described groove or through hole communicate with the liquid outlet 720 of liquid outlet 72 in foam gap filler holding vessel 7 with described, described groove or through hole communicate with the described feed pathway 21 be positioned at below described close mouth 210, beneficial effect makes to pass through without blockage feed pathway 21 with the foam gap filler discharged in foam gap filler holding vessel 7 to enter in rifle body, make foam caulking gun uniform in foaming, foamed amount is large, rational in infrastructure, the effect of foaming before greatly increasing.

Usually can adopt with foam caulking gun other connected modes such as being threaded or being mutually connected together with foam gap filler holding vessel 7.

The escapement for preventing described impeller from coming off also is provided with in feed pathway above described close mouth, see Fig. 1 to 4, the escapement for preventing described impeller 5 from coming off also is provided with in feed pathway 21 above described close mouth 210, effectively ensure that stability that impeller 5 moves up and down, flexibility and reasonability, prevent described impeller 5 from occurring coming off or dumb phenomenon, more effectively ensure that foam gap filler stability of flow in external holding vessel and move smoothly through described feed pathway and enter in described rifle body.

Further, see 1 to Fig. 4 or Fig. 8, Figure 11 to Figure 23, Figure 32 to Figure 34, when the impeller 5 in feed pathway 21 or impeller 5 and escapement are surrounded by foam gap filler and block, or when needing to change impeller 5 or impeller 5 and escapement, even if be closed with remaining foam gap filler or cleaning agent in rifle body 1, all freely can replace described impeller 5 or described impeller 5 and escapement, maybe can take out described impeller 5 or described impeller 5 and escapement clean after again install get back in feed pathway 21, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, this is rational in infrastructure, convenient disassembly and safe and reliable, cost is low, the better effects if of foaming before producing.Further, see Fig. 1, Fig. 8 or Figure 11, described escapement is spring 61, and described spring 61 one end sticks described impeller 5, and described spring 61 other end is fixed in described feed pathway 21, and simple and reasonable for structure, cost is low.Wherein, impeller 5 can arbitrarily be replaced, after only one end of spring 61 need being stuck impeller 5 during replacement, refill into feed pathway 21, also can be that impeller 5 is replaced together with spring 61, put into feed pathway 21 with new impeller 5 and spring 61, cost is low, easy to assembly.Also impeller 5 can be clamped with pliers, then pull out just passable, can clean or change old impeller 5 and spring 61, the foam gap filler that the feed pathway that is arranged in impeller 5 and spring 61 place is residual can also be cleared up, can with special pliers again after cleaning or new impeller 5 and spring 61 be installed in feed pathway 21, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, like this, can continue again to use the foam caulking gun that can produce front foaming.Described impeller 5 can adopt plastics to be made for preferably.

Further again, described spring 61 other end is fixed on the inwall of described feed pathway 21, when being subject to the thrust that in foam gap filler holding vessel 7, liquid outlet 72 is downward, the stressed described closure member of promotion that moves down of described impeller 5 moves down and opens described feed pathway 21, when in foam gap filler holding vessel 7, liquid outlet 72 exits feed pathway 21, described impeller promotes impeller 5 because of the elastic force of spring 61 and resets, simultaneously, spring 61 also limit the line-spacing of impeller, control impeller can not come off, effectively ensure that the stability that impeller moves up and down, flexibility and reasonability, prevent described impeller from occurring coming off or dumb phenomenon, more effectively ensure that foam gap filler stability of flow in external holding vessel and move smoothly through described feed pathway and enter in described rifle body.

See 20 to Figure 21, or Figure 22 to Figure 23, or Figure 24 to Figure 25, described escapement is defining flange 62 for limiting described impeller 5 displacement or defining flange 62 ', simple and reasonable for structure, cost is low, and wherein, impeller 5 can arbitrarily be replaced, only one end of spring 61 need be stuck impeller 5 during replacement, also can be that impeller 5 is replaced together with spring 61, see Figure 24 to Figure 25, impeller 5 can arbitrarily be replaced, these are rational in infrastructure, convenient disassembly and safe and reliable, cost is low, the better effects if of foaming before producing.Further, described defining flange 62 or defining flange 62 ' are positioned at the below of described spacing shoulder 211 or spacing shoulder 211 ', simple and reasonable for structure, easy to process, further again, described impeller has at least the limited flange of part to block, see Figure 21 or Figure 22, described defining flange 62 or defining flange 62 ' block the top of described impeller 5, effectively prevent impeller 5 and occur obscission, when in foam gap filler holding vessel 7, liquid outlet 72 exits feed pathway 21, described impeller 22 promotes impeller 5 because of the elastic force of back-moving spring 23 and resets, simultaneously, defining flange 62 or defining flange 62 ' block the top of described impeller 5, also limit the line-spacing of impeller, control impeller can not come off, effectively ensure that the stability that impeller moves up and down, flexibility and reasonability, prevent described impeller 5 from occurring coming off or dumb phenomenon, more effectively ensure that foam gap filler stability of flow in external holding vessel and move smoothly through described feed pathway and enter in described rifle body 1.Also the spacing salient point that can be described escapement be for limiting described impeller 5 displacement, spacing salient point can be the ring-type of multiple salient point composition, further, spacing salient point is positioned at the below of described spacing shoulder 211, further again, described impeller 5 has at least part to be blocked by described spacing salient point, and described spacing salient point blocks the top of described impeller 5, its beneficial effect is same as described above, is not repeated herein.

See 20 to Figure 21, or Figure 22 to Figure 23, or Figure 24 to Figure 25, impeller (5, 54) plastics are adopted to be made for preferably, easy to process, cost is low, plastics can adopt poly-third or polyformaldehyde or nylon etc., when the impeller 5 in feed pathway 21 is surrounded by foam gap filler and blocks, or need to change impeller (5, 54) time, even if be closed with remaining foam gap filler or cleaning agent in rifle body 1, all freely can replace described impeller (5, 54), maybe can take out described impeller (5, 54) installing after cleaning gets back in feed pathway 21 again, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, this is rational in infrastructure, convenient disassembly and safe and reliable, cost is low, the better effects if of foaming before producing.Impeller (5, 54) can arbitrarily replace, also impeller (5 can be clamped with pliers, 54), impeller (5, 54) can adopt made of plastic flexible, then pull out just passable, can clean or change old impeller (5, 54), can also clear up and be positioned at impeller (5, 54) foam gap filler residual in the feed pathway at place, can with special pliers again the impeller (5 that cleaning is rear or new, 54) be installed in feed pathway 21, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, like this, can continue again to use the foam caulking gun of foaming before producing.

See Figure 24 or Figure 25, the lateral section of described impeller 54 is dry font, and simple and reasonable for structure, the good stability moved up and down, cost is low.

See Figure 22 to Figure 23, arrange neck bush 28 in feed pathway 21, arrange sealing ring 29 between neck bush 28 and feed pathway 21, prevent from occurring the phenomenon of leakage between them, sealing ring 29 is positioned at the bottom of described neck bush 28,

See Figure 22 and Figure 23, spacing shoulder 211 ' is arranged on the top of neck bush 28, and defining flange 62 ' is positioned at the below of described spacing shoulder 211 ', and its beneficial effect is identical with Figure 20 structure, is not repeated herein.

See Figure 26 to Figure 31, described escapement is the stop collar 63 for limiting impeller 55 movement, and described stop collar 63 can be fixed on the inwall of described feed pathway 21, and simple and reasonable for structure, cost is low, convenient disassembly.Impeller 55 and stop collar 63 can adopt plastics to be made for preferably, and easy to process, cost is low, and plastics can adopt poly-third or polyformaldehyde or nylon etc.

When the impeller 55 in feed pathway 21 and stop collar 63 are surrounded by foam gap filler and block, or when needing to change impeller 55 or impeller 55 and stop collar 63, even if be closed with remaining foam gap filler or cleaning agent in rifle body 1, all freely can replace described impeller 55 or described impeller 55 and stop collar 63, maybe can take out described impeller 55 or described impeller 55 and stop collar 63 clean after again install get back in feed pathway 21, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, this is rational in infrastructure, convenient disassembly and safe and reliable, cost is low, the better effects if of foaming before producing.Further, see Figure 26, Figure 27, also impeller 55 can be clamped with pliers, impeller 55 and stop collar 63 can be adopted made of plastic flexible, then pull out just passable, also stop collar 63 and impeller 55 all can be pressed from both sides out with pliers, can clean or change old impeller 5 and stop collar 63, the foam gap filler that the feed pathway that is arranged in impeller 55 and stop collar 63 place is residual can also be cleared up, can with special pliers again after cleaning or new impeller 55 and stop collar 63 be installed in feed pathway 21, the sealing of closure member 22 pairs of feed pathway 21 can not be affected, the phenomenon of leakage is there will not be in rifle body 1, like this, can continue again to use the foam caulking gun of foaming before producing.

Further, described stop collar 63 has mating holes 630, described mating holes 630 closes with the diameter compatible of described impeller 55 and makes described stop collar 63 be socketed on described impeller 55, the diameter that described impeller 55 stretches out the tip portion 510 of mating holes 630 is greater than the aperture of described mating holes 630, limit the line-spacing of impeller 55, control impeller 55 can not come off, effectively ensure that the stability that impeller moves up and down, flexibility and reasonability, prevent described impeller from occurring coming off or dumb phenomenon, more effectively ensure that foam gap filler stability of flow in external holding vessel and move smoothly through described feed pathway and enter in described rifle body.Described stop collar 63 arranges 4 through holes 91,92,93,94, effectively ensure that foam gap filler passes through smoothly from stop collar 63.

See Fig. 1 and Fig. 4, the external holding vessel 8 that can also be replaced by with cleaning agent on described foam caulking gun, with liquid outlet 82 in the holding vessel 8 of described cleaning agent, described foam caulking gun is characterised in that described feed pathway 21 also for connecting with the liquid outlet 82 in external cleaning agent holding vessel 8, when described load onto described feed pathway 21 with the liquid outlet 82 in cleaning agent holding vessel 8 time, described closure member 22 opens described feed pathway 21 by stressed the moving down of mode of driving or air pressure self-action, beneficial effect is that the holding vessel two kinds of different structures of the holding vessel and cleaning agent that efficiently avoid foam gap filler are arranged on not interaction that same foam caulking gun brings and cause cleaning leakage or cleaning difficulty maybe cannot clean.

Further, described closure member 22 opens described feed pathway 21 by stressed the moving down of the mode of air pressure self-action, when described load onto described feed pathway 21 with the liquid outlet 82 in cleaning agent holding vessel 8 time, see Fig. 4, described cleaning agent utilizes the pressure of self automatically push described closure member 22 open and clean foam gap filler remaining in described foam caulking gun, in this case, softer elasticity made by back-moving spring 23 is preferred, cleaning agent is made to utilize the pressure of self easily to push closure member 22 open, when the liquid outlet 82 in described cleaning agent holding vessel 8 exits and leaves described feed pathway 21, described closure member 22 seals described feed pathway 21 because of the elastic force of back-moving spring 23, this structure is simple, rationally, cost is low, easy to clean, not easily there is the phenomenon of leakage in cleaning.

Further, when described external load onto described feed pathway 21 with the liquid outlet 82 in cleaning agent holding vessel 8 time, liquid outlet 82 in described external cleaning agent holding vessel 8 does not contact with described impeller 22, it is simple and reasonable for structure that this impeller 22 is arranged in feed pathway 21, cost is low, product is stablized, and qualification rate is high, is applicable to producing in enormous quantities.

Further again, when described load onto described feed pathway 21 with the liquid outlet 82 in cleaning agent holding vessel 8 and lean against on described spacing shoulder 211 time, holding vessel 8 with cleaning agent continues to move down, described spacing shoulder 211 is made to extrude liquid outlet 82 in described cleaning agent holding vessel 8, the liquid outlet 82 in described holding vessel 8 is made to move to described holding vessel 8 direction and open the liquid outlet 82 in described holding vessel 8, described cleaning agent is sprayed from the liquid outlet 82 described holding vessel 8 to be entered in described feed pathway 21, described cleaning agent utilizes the pressure of self automatically push described closure member 22 open and clean foam gap filler remaining in described foam caulking gun, structure is simple, rationally with stable, cost is low, qualification rate is high, be applicable to producing in enormous quantities.

See Fig. 1, Fig. 3, Fig. 4, Fig. 6 and Fig. 7, described impeller 5 is provided with 4 grooves 551, 552, 553, 554 or through hole 530 and 530 ' (see Figure 16 or 18), see Figure 10, described impeller 52 is provided with 3 grooves 551, 552, 553, when described with cleaning agent holding vessel 8 in liquid outlet 82 combine with described feed pathway 21 time, described groove or through hole or groove communicate with the liquid outlet 820 of liquid outlet 82 in foam gap filler holding vessel 8 with described, described groove or through hole or groove communicate with the described feed pathway 21 be positioned at below described close mouth 210, beneficial effect makes to pass through without blockage feed pathway 21 with the cleaning agent discharged in cleaning agent holding vessel 8 to enter in rifle body, cleaning performance is good.

See Figure 16 and Figure 18, described closure member 22 opens described feed pathway 21 by stressed the moving down of the mode of driving, when described with the liquid outlet 82 in cleaning agent holding vessel 8 load onto described feed pathway 21 contact with described impeller 53 and make the liquid outlet 82 in holding vessel 8 promote described impeller 53 move down time, the thrust that described closure member 22 is subject to described impeller 53 moves down opens described feed pathway 21, described cleaning agent is sprayed from the liquid outlet 82 of described holding vessel 8 to be entered in described feed pathway 21, described cleaning agent cleans foam gap filler remaining in described foam caulking gun, when the liquid outlet 82 in described cleaning agent holding vessel 8 exits and leaves described feed pathway 21, described closure member 22 seals described feed pathway 21 because of the elastic force of back-moving spring 23, this structure is simple, rationally, cost is low, easy to clean, not easily there is the phenomenon of leakage in cleaning.Described spring 61 is arranged in the feed pathway 21 above described close mouth 210, and impeller 53 makes described impeller 53 playback because of the elastic force of described spring 61, prevents delay or stuck phenomenon.

See Figure 32 and Figure 34, described closure member 22 opens described feed pathway 21 by stressed the moving down of the mode of driving, when described with the liquid outlet 82 in cleaning agent holding vessel 8 load onto described feed pathway 21 contact with described impeller 5 and make the liquid outlet 82 in holding vessel 8 promote described impeller 5 move down time, the thrust that described closure member 22 is subject to described impeller 5 moves down opens described feed pathway 21, described cleaning agent is sprayed from the liquid outlet 82 of described holding vessel 8 to be entered in described feed pathway 21, described cleaning agent cleans foam gap filler remaining in described foam caulking gun, when the liquid outlet 82 in described cleaning agent holding vessel 8 exits and leaves described feed pathway 21, described closure member 22 seals described feed pathway 21 because of the elastic force of back-moving spring 23, this structure is simple, rationally, cost is low, easy to clean, not easily there is the phenomenon of leakage in cleaning.

Further, described feed pathway 21 inside is provided with the second spacing shoulder 212 cooperatively interacted with the liquid outlet 82 of external cleaning agent holding vessel 8, described second spacing shoulder 212 is positioned at the below of described spacing shoulder 211, the diameter of described second spacing shoulder 212 is less than the diameter of described spacing shoulder 211, described second spacing shoulder 212 is for extruding the liquid outlet 82 of described cleaning agent holding vessel 8, the liquid outlet 82 in described holding vessel 8 is made to move to described holding vessel 8 direction and open the liquid outlet 82 of described holding vessel 8, described cleaning agent is sprayed from the liquid outlet 82 of described holding vessel 8 to be entered in described feed pathway 21, when described load onto described feed pathway 21 with the liquid outlet 82 in the holding vessel 8 of cleaning agent and lean against described second spacing shoulder 211 time, holding vessel 8 with cleaning agent continues to move down, the screw thread 27 that can be arranged by described holding vessel 8 and described feed pathway 21 outer rim is spun mutually and produces and moves down, two annular through groove that also can arrange by described holding vessel 8 being arranged two protuberances and described feed pathway 21 outer rim spin mutually and produce and move down, described second spacing shoulder 211 is made to extrude the liquid outlet 82 of described cleaning agent holding vessel 8, described cleaning agent is sprayed from the liquid outlet 82 of described holding vessel 8 to be entered in described feed pathway 21, described second spacing shoulder 211 promotes the liquid outlet 82 on described cleaning agent holding vessel 8 and seals with liquid outlet 82 phase, described cleaning agent cleans foam gap filler remaining in described foam caulking gun, when liquid outlet 82 in the holding vessel 8 of described cleaning agent exits and leaves described feed pathway 21, described closure member 22 seals described feed pathway 21 because of the elastic force of back-moving spring 23, this structure is simple, rationally, cost is low, easy to clean, not easily there is the phenomenon of leakage in cleaning, holding vessel two kinds of different structures of the holding vessel and cleaning agent that efficiently avoid foam gap filler are arranged on not interaction that same foam caulking gun brings and cause cleaning leakage or cleaning difficulty maybe cannot clean.

See Fig. 1, described closure member 22 can adopt ball, good airproof performance, and cost is low.

See Figure 22, described closure member 22 directly seals mutually with described feed pathway 21, prevents between closure member 51 and described feed pathway 2 and occurs the phenomenon of leakage.

See Fig. 1 or Figure 12, described closure member 22 or 22 ' with described feed pathway 21 between by sealing ring 25 or 25 ' seal mutually, prevent better between closure member 51 and described feed pathway 21 and occur the phenomenon of leakage.

Further, see Fig. 1, described sealing ring 25 can be fixed in described feed pathway 21, and see Figure 12, described sealing ring 25 ' also can be fixed on described closure member 22 ', rational in infrastructure, simple, good airproof performance, and cost is low, is applicable to producing in enormous quantities.

See Figure 16 and Figure 17, recess 56 is made on the top of described impeller 53, the liquid outlet 82 be convenient in external foam gap filler holding vessel 8 puts in, further, described recess 56 is arranged through hole 530,530 ', the foam gap filler being convenient to ejection in the liquid outlet 82 in holding vessel 8 enters in feed pathway smoothly.Also described recess 56 can be provided with groove, the foam gap filler being convenient to ejection in the liquid outlet 82 in holding vessel 8 enters in feed pathway smoothly.

See Fig. 1, the lateral section of described impeller 5 is T-shaped, and structure is simple, and cost is low, and serviceability is better.

See Fig. 6, Fig. 7 and Fig. 9, the plan structure of described impeller 5 or 51 is four heel brace shapes, see Figure 10, the plan structure three heel brace shape of described impeller 52 also can be five heel brace shapes or six heel brace shapes, rational in infrastructure, easy to process, cost is low, is applicable to producing in enormous quantities.The plan structure of preferred described impeller is four heel brace shapes or three heel brace shapes.

See Fig. 1, Fig. 5, Figure 28 and Figure 35, described closure member 22 is spheroidal, and the bottom of described impeller 5 arranges the concave surface matched with described closure member.Further, described concave surface is concaved circular cambered surface (57,57 '), and effectively prevent contacting between them from occurring sliding phenomenon, stability in use is good.

It is worth mentioning that, described impeller and feed pathway can be demountable structure.Described escapement can be also demountable structure with described feed pathway.When described escapement is spring, described impeller and spring are all dismountable structure with described feed pathway.

See Fig. 1, Fig. 8 and Figure 11, described impeller 5 is can dismountable structure with feed pathway 21.Further, described impeller 5 and escapement and described feed pathway 21 also can be dismountable structure.Described escapement is spring 61, and described impeller 5 and spring 61 can be dismountable structure with described feed pathway 21.Convenient disassembly and safe and reliable, there will not be the phenomenon of leakage, cost is low, the better effects if of foaming before producing, when needs separate, impeller 5 can be clamped with pliers, then pull out just passable, see Fig. 1, Fig. 8 and Figure 11, can clean or change impeller 5 and the spring 61 of dismounting, again impeller 5 and spring 61 can be installed in feed pathway 21 with special pliers, like this, can continue again to use the foam caulking gun of foaming before producing.

Claims

1. a foam caulking gun, comprise rifle body, liquid feed valve, liquid valve and switching device, liquid feed valve comprises feed pathway, closure member and back-moving spring, described closure member and feed pathway seal mutually and form close mouth in described feed pathway inside, described closure member forms confining zone, it is characterized in that: the described feed pathway inside be positioned at above described close mouth is arranged for promoting the impeller that described closure member moves down, when described impeller is subject to downward thrust, promote described closure member to move down and open described feed pathway, described impeller is made to control to keep between described confining zone and described close mouth stable to distance, when described closure member is not subject to downward thrust, described closure member because of described back-moving spring resilient seal described in feed pathway.

2. foam caulking gun according to claim 1, is characterized in that, is also provided with the escapement for preventing described impeller from coming off in the feed pathway above described close mouth.

3. foam caulking gun according to claim 2, is characterized in that, it is the thrust that in external foam gap filler holding vessel, liquid outlet is downward that described impeller is subject to downward thrust; Or described impeller to be subject to downward thrust be the thrust that in the holding vessel of cleaning agent, liquid outlet is downward, when described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, described closure member opens described feed pathway by stressed the moving down of mode of driving or air pressure self-action.

4. foam caulking gun according to claim 3, it is characterized in that, described feed pathway is loaded onto with the liquid outlet in foam gap filler holding vessel when described, and contact with described impeller and make the liquid outlet in described holding vessel promote described impeller when moving down, the thrust that described closure member is subject to described impeller moves down opens described feed pathway, described impeller is made to control to keep stable spacing between described confining zone and described close mouth, when described leave described impeller with the liquid outlet in foam gap filler holding vessel exits time, described closure member seals described feed pathway because of the elastic force of back-moving spring.

5. foam caulking gun according to claim 4, it is characterized in that, described feed pathway inside is provided with the first spacing shoulder cooperatively interacted with liquid outlet in external foam gap filler holding vessel, described first spacing shoulder is for extruding the liquid outlet in described foam gap filler holding vessel, make the liquid outlet in described holding vessel move to described holding vessel direction and open the liquid outlet in described holding vessel, described foam gap filler is sprayed from the liquid outlet of described holding vessel and enters in described feed pathway.

6. foam caulking gun according to claim 5, is characterized in that, described impeller is positioned at the below of described first spacing shoulder.

7. foam caulking gun according to claim 2, it is characterized in that, described impeller is provided with at least one groove or groove or through hole, when described with foam gap filler holding vessel in liquid outlet combine with described feed pathway time, described groove or groove or through hole communicate with the outlet of liquid outlet in foam gap filler holding vessel with described, and described groove or groove or through hole communicate with the described feed pathway be positioned at below described close mouth.

8. foam caulking gun according to claim 6, it is characterized in that, described impeller is provided with at least one groove or groove or through hole, when described with foam gap filler holding vessel in liquid outlet combine with described feed pathway time, described groove or groove or through hole communicate with the outlet of liquid outlet in foam gap filler holding vessel with described, and described groove or groove or through hole communicate with the described feed pathway be positioned at below described close mouth.

9. the foam caulking gun according to claim arbitrary in claim 2 to 8, is characterized in that, described escapement is spring, and described spring one end sticks described impeller, and the described spring other end is fixed in described feed pathway.

10. foam caulking gun according to claim 9, is characterized in that, the described spring other end is fixed on the inwall of described feed pathway.

11. foam caulking guns according to claim arbitrary in claim 5 to 8, is characterized in that, described escapement is spacing salient point for limiting described impeller displacement or defining flange.

12. foam caulking guns according to claim 11, is characterized in that, described spacing salient point or defining flange are positioned at the below of described first spacing shoulder.

13. foam caulking guns according to claim 12, is characterized in that, described impeller has at least part to be blocked by described spacing salient point or defining flange.

14. foam caulking guns according to claim arbitrary in claim 2 to 8, it is characterized in that, described escapement is the stop collar for limiting impeller movement, and described stop collar is fixed on the inwall of described feed pathway.

15. foam caulking guns according to claim 14, it is characterized in that, described stop collar has mating holes, the diameter compatible of described mating holes and described impeller closes and makes described stop collar be socketed on described impeller, and the diameter that described impeller stretches out the tip portion of mating holes is greater than the aperture of described mating holes.

16. foam caulking guns according to claim 3, it is characterized in that, described closure member opens described feed pathway by stressed the moving down of the mode of air pressure self-action, when described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, described cleaning agent utilizes the pressure of self automatically push described closure member open and clean foam gap filler remaining in described foam caulking gun, when the liquid outlet in described cleaning agent holding vessel exits and leaves described feed pathway, described closure member seals described feed pathway because of the elastic force of back-moving spring.

17. foam caulking guns according to claim 5, it is characterized in that, described closure member opens described feed pathway by stressed the moving down of the mode of air pressure self-action, when described load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, described cleaning agent utilizes the pressure of self automatically push described closure member open and clean foam gap filler remaining in described foam caulking gun, when the liquid outlet in described cleaning agent holding vessel exits and leaves described feed pathway, described closure member seals described feed pathway because of the elastic force of back-moving spring.

18. foam caulking guns according to claim 16, is characterized in that, when described external load onto described feed pathway with the liquid outlet in cleaning agent holding vessel time, the liquid outlet in described external cleaning agent holding vessel does not contact with described impeller.

19. foam caulking guns according to claim 17, it is characterized in that, when described load onto described feed pathway with the fluid-mouth in cleaning agent holding vessel and lean against on described first spacing shoulder time, holding vessel with cleaning agent continues to move down, described first spacing shoulder is made to extrude liquid outlet in described cleaning agent holding vessel, the liquid outlet in described holding vessel is made to move to described holding vessel direction and open the liquid outlet in described holding vessel, described cleaning agent is sprayed from the liquid outlet described holding vessel to be entered in described feed pathway, described cleaning agent utilizes the pressure of self automatically push described closure member open and clean foam gap filler remaining in described foam caulking gun.

20. foam caulking guns according to claim 5, it is characterized in that, described closure member opens described feed pathway by stressed the moving down of the mode of driving, when described with the liquid outlet in cleaning agent holding vessel load onto described feed pathway contact with described impeller and make the liquid outlet in holding vessel promote described impeller move down time, the thrust that described closure member is subject to described impeller moves down opens described feed pathway, described cleaning agent is sprayed from the liquid outlet of described holding vessel to be entered in described feed pathway, described cleaning agent cleans foam gap filler remaining in described foam caulking gun, when the liquid outlet in described cleaning agent holding vessel exits and leaves described feed pathway, described closure member seals described feed pathway because of the elastic force of back-moving spring.

21. according to foam caulking gun described in claim 20, it is characterized in that, described feed pathway inside is provided with the second spacing shoulder cooperatively interacted with the liquid outlet of external cleaning agent holding vessel, described second spacing shoulder is positioned at the below of described first spacing shoulder, the diameter of described second spacing shoulder is less than the diameter of described first spacing shoulder, and described second spacing shoulder is for extruding the liquid outlet of described cleaning agent holding vessel.

22. foam caulking guns according to claim arbitrary in claim 1 to 8, is characterized in that, described closure member adopts ball.

23. foam caulking guns according to claim arbitrary in claim 1 to 8, be is characterized in that, sealed mutually between described closure member with described feed pathway by sealing ring.

24. foam caulking guns according to claim 23, it is characterized in that, described sealing ring is fixed in described feed pathway.

25. foam caulking guns according to claim 23, it is characterized in that, described sealing ring is fixed on described closure member.

26. foam caulking guns according to claim arbitrary in claim 1 to 8, it is characterized in that, recess is made on the top of described impeller.

27. foam caulking guns according to claim 26, is characterized in that, described recess is provided with groove or through hole.

28. foam caulking guns according to claim arbitrary in claim 1 to 8, it is characterized in that, the lateral section of described impeller is T-shaped or dry font.

29. foam caulking guns according to claim 28, is characterized in that, the plan structure of described impeller is three heel brace shapes, four heel brace shapes, five heel brace shapes or six heel brace shapes.

30. foam caulking guns according to claim arbitrary in claim 1 to 8, it is characterized in that, described closure member is spheroidal, and the bottom of described impeller arranges the concave surface matched with described closure member.

31. foam caulking guns according to claim 30, is characterized in that, described concave surface is concaved circular cambered surface.

32. foam caulking guns according to claim arbitrary in claim 1 to 8, it is characterized in that, described impeller and feed pathway are demountable structure.

33. foam caulking guns according to claim 32, is characterized in that, described impeller and escapement and described feed pathway are demountable structure.

34. foam caulking guns according to claim 33, is characterized in that, described escapement is spring, and described impeller and spring and described feed pathway are dismountable structure.