CN201353544Y

CN201353544Y - Foam spray gun

Info

Publication number: CN201353544Y
Application number: CNU2009201137311U
Authority: CN
Inventors: 屠旭峰
Original assignee: Individual
Current assignee: Zhejiang JM Industry Co Ltd
Priority date: 2009-02-11
Filing date: 2009-02-11
Publication date: 2009-12-02
Anticipated expiration: 2019-02-11

Abstract

The utility model relates to a foam spray gun which comprises a gun body, a spray head, a spanner, a one-way liquid inlet mechanism, a piston rod, a piston, a resetting part, a one way valve and a screen mesh, wherein the gun body is provided with a foam generating channel; the piston rod is arranged at the inner side of the spanner, can be driven by the spanner to move inwards and is assembled and matched with the gun body; the piston is arranged in an inner cavity of the piston rod, moves along with the piston rod and is matched with the gun body to form a first cavity and a second cavity; and the one way valve and the screen mesh are arranged inside the foam generating channel of the gun body. Compared with the prior art, the foam spray gun has the advantages that a foam generating mechanism formed by the one way valve and a one way valve plate is combined with the gun body, the first cavity and the second cavity in an organic manner, so that gas and liquid converge at a liquid outlet of the one way valve to form foam; and then, the generated foam enters the screen mesh for secondary foaming, thus foam generating quantity is rich, and wrench type design ensures the better hand feeling of repetitive operation.

Description

Foam lance

Technical field

The utility model relates to a kind of liquid spray gun, relates in particular to a kind of spray gun that can produce foam, can be applicable to carwash, washes occasions such as glass.

Background technology

At present, be used for injection apparatus on liquid detergent, cleaning fluid, the cosmetics based on spray pattern, but during as localized ejection, adopt traditional spray pattern, control the size of bad spray volume, tend to cause the phenomenon of jetting fluid waste, the employing foam jet then can be more reasonable, in addition, foam jet provides a kind of new spray regime to the user, a new attractable point, market is provided for the market of injection apparatus.

Existing foam jet is contained on the spray gun to realize the foam jet function by a foam nozzle basically, as the patent No. is Chinese utility model patent " the foaming nozzle component that is used for the trigger-type the injector " (Granted publication number: CN2632010C) of ZL95117596.3, comprise a inner core and a foam intensifier with smooth inner wall, its inwall constitutes the eddy flow chamber coaxial with discharge port, the jet of one taper is discharged from discharge port along downstream direction, enter above-mentioned eddy flow chamber and mix when forming foam bubbles, produced foam with the above-mentioned smooth inner wall of convenient jet particle impacting and with air in the eddy flow chamber; The foam intensifier has the rib that separates in some formations hole, and these ribs have the flat surface vertical with spin chamber's inwall, further produces foam when impacting this flat surface with convenient foam bubbles, further to mix with air in the spin chamber.Similarly can also application reference number be that 96105369.0 Chinese patent application discloses " the dual bubbling nozzle assembly that is used for trigger-type " (publication number: CN1167016A), the said goods need cooperate with special spray gun could be realized spraying, and uses more restricted.

The apparatus for spray of foam that push type is also arranged, as the patent No. is Chinese utility model patent " mechanical type the foam nozzle " (Granted publication number: CN2632010Y) of ZL03209871.5, this patent comprises a nozzle boss, be positioned at the unidirectional fluid of the nozzle at nozzle boss center and mechanism, fluid hole is arranged in the nozzle, there are a liquid inlet and liquid outlet in unidirectional fluid mechanism, unidirectional fluid mechanism connects with nozzle, its liquid outlet communicates with the fluid hole of nozzle, it is characterized in that the liquid outlet place of described unidirectional fluid mechanism is provided with mesh screen.Similarly also having the patent No. is Chinese utility model patent " can produce the shower nozzle of the foam " (Granted publication number: CN200970562Y) of ZL200620060605.0.The operation of repeated presses formula is relatively required great effort in short time, influence result of use, and the foam generating capacity is limited.

The utility model content

Technical problem to be solved in the utility model is the foam lance that a kind of turning-fastening type is provided at the above-mentioned state of the art, and simple to operation, the foam generating capacity is plentiful.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: foam lance comprises

The rifle body has foam generation passage;

Shower nozzle is located at above-mentioned rifle body head;

Spanner is located on the above-mentioned rifle body rotationally;

Unidirectional feed liquor mechanism is located at the feed liquor port of above-mentioned rifle body;

It is characterized in that also comprising

Piston rod, it is inboard and can move inwards under the driving of spanner to be located at above-mentioned spanner, and cooperates with above-mentioned rifle body assembling;

Piston, be located at the inner chamber of above-mentioned piston rod and can move and cooperates formation first cavity and second cavity with above-mentioned rifle body with piston rod, aforesaid first cavity and second cavity communicate by first gas passage and second gas passage respectively with the foam generation passage of above-mentioned rifle body;

Return unit forces above-mentioned piston rod to keep the outwards trend of motion all the time;

Check valve is located in the foam generation passage of above-mentioned rifle body, and the liquid outlet of check valve is communicated with above-mentioned first gas passage by a check valve sheet, and the inlet of check valve is communicated with above-mentioned second gas passage; And

Screen cloth is located in the foam generation passage of above-mentioned rifle body and between the liquid outlet and above-mentioned shower nozzle of above-mentioned check valve.

As preferably, the foam generation passage of described rifle body comprises horizontal channel and Vertical Channel, and the direction of motion of described piston rod is parallel with aforesaid horizontal channel, and vertical with aforesaid Vertical Channel, described check valve then is located in the aforesaid Vertical Channel.

For improving foam generation effect, described screen cloth is two, a close described shower nozzle setting, and another also is positioned at described Vertical Channel near described check valve setting.

For improving the reasonable transition of foam generation effect and liquid, also be provided with a backing member with central passage in the described Vertical Channel, the inlet of backing member is connected with described unidirectional feed liquor mechanism, and the fluid port of backing member is connected with the inlet of described check valve.Further, the fluid port of described backing member has transverse opening, and this transverse opening communicates with described second gas passage.

Be convenient to produce and assembling, described check valve sheet is shaped in the sidewall of described check valve, and the V-shaped inverted cone-shaped of the head of described check valve.

For making pressure in the liquid storage container and external atmosphere pressure maintenance balance under the normality, one return-air mechanism need be set, return-air mechanism is preferably as follows design: described rifle body has a return gas channel that communicates with described unidirectional feed liquor mechanism, described piston-rod lower end has a valve piston portion, and this valve piston portion forms a return-air mechanism by the return-air chamber and the aforesaid return gas channel of described rifle body.

Unidirectional feed liquor mechanism is preferably as follows design: described unidirectional feed liquor mechanism comprises

The pump housing is located at described rifle body feed liquor port and upper end and is had a V-type liquid outlet, and the bottom is connected with a water inlet pipe;

Spherolite is positioned on the V-type liquid outlet of the above-mentioned pump housing, no liquid by the time V-type liquid outlet sealed close; And

Big lid, the upper end is connected with the above-mentioned pump housing, and the bottom can cooperate with the container port that has liquid.

Be convenient to the inner space layout, reduce installation volume, described first cavity and second cavity are coaxial setting, and accordingly, described piston then is made up of inner carrier portion and outer piston portion.

Compared with prior art, advantage of the present utility model is: with foam generating mechanism and rifle body and first cavity and the combination of second cavity of check valve and check valve sheet composition, make gas-liquid converge the formation foam at the check valve liquid outlet, advance the screen cloth second time of foaming then, the foam generating capacity is plentiful, adopts simultaneously and pulls the button mode, and is simple and convenient, leicht fallen D/A, the repetitive operation feel is preferable.

Description of drawings

Fig. 1 is the example structure schematic diagram.

Fig. 2 is the embodiment decomposition assembling figure.

Fig. 3 is an embodiment cutaway view (water inlet pipe is housed).

Fig. 4 is the enlarged drawing of check valve among Fig. 2.

Fig. 5 is the enlarged drawing of backing member among Fig. 2.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment: as Fig. 1, Fig. 2 and shown in Figure 3, the foam lance in the present embodiment comprises rifle body 1, shower nozzle 2, spanner 3, unidirectional feed liquor mechanism 4, piston rod 8, piston 9, return unit 91, check valve 6, first screen cloth 51, second screen cloth 52 and backing member 7.

Rifle body 1 has foam generation passage, and foam generation passage comprises horizontal channel 11 and Vertical Channel 12.Shower nozzle 2 is located at rifle body 1 head and is connected with horizontal channel 11 injection tips, and spanner 3 is located on the rifle body 1 rotationally.

Unidirectional feed liquor mechanism 4 comprises the pump housing 42, spherolite 41 and covers 43 greatly, the pump housing 42 is located at rifle body 1 feed liquor port, and the upper end has a V-type liquid outlet, the bottom is connected with a water inlet pipe 44, spherolite 41 is positioned on the V-type liquid outlet of the pump housing 42, no liquid by the time V-type liquid outlet sealed close, cover 43 upper ends greatly and be connected with the pump housing, the bottom can cooperate with the container port that has liquid.

Piston rod 8 is located at spanner 3 inboards and can be moved inwards under the driving of spanner 3, and cooperates with 1 assembling of rifle body, and the direction of motion of piston rod 8 is parallel with horizontal channel 11, and is vertical with Vertical Channel 12.

Piston 9 is located at the inner chamber of piston rod 8 and can be cooperated with piston rod 8 motions and with rifle body 1 and forms first cavity 14 and second cavity 15, first cavity 14 and second cavity 15 communicate by the first gas passage 1a and the second gas passage 1b respectively with Vertical Channel 12 in the rifle body 1, the first gas passage 1a is located at the second gas passage 1b top position, and, first cavity 14 and second cavity 15 are coaxial setting, accordingly, 9 in piston is made up of 9a of inner carrier portion and the 9b of outer piston portion.

Return unit 91 is one to force piston rod 8 to keep the back-moving spring of outside movement tendency all the time, and an end and piston 9 inwalls offset and between 9a of inner carrier portion and the 9b of outer piston portion, the inwall of the other end and rifle body 1 offsets.Check valve 6 is located in the Vertical Channel 12, the liquid outlet of check valve 6 is communicated with the first gas passage 1a by a check valve sheet 61, the inlet of check valve 6 is communicated with the second gas passage 1b, with reference to figure 2 and Fig. 4, check valve sheet 61 is shaped in the sidewall of check valve 6, the V-shaped inverted cone-shaped of the head of check valve 6.

First screen cloth 51 and second screen cloth 52 are located at respectively in horizontal channel 11 and the Vertical Channel 12 and between check valve liquid outlet and shower nozzle, and first screen cloth 51 is provided with near shower nozzle 2, and second screen cloth 52 is provided with near check valve 6.

Backing member 7 is located in the Vertical Channel 12 and is had central passage, and the inlet of backing member 7 is connected with unidirectional feed liquor mechanism 4, and the fluid port of backing member 7 is connected with the inlet of check valve 6.Further, as shown in Figure 5, the fluid port of backing member 7 has transverse opening 71, and this transverse opening 71 communicates with the second gas passage 1b.

For making pressure in the liquid storage container and external atmosphere pressure maintenance balance under the normality, one return-air mechanism need be set, rifle body 1 has a return gas channel 13, this return gas channel 13 communicates with the return gas channel 421 of the pump housing, piston rod 8 lower ends have the valve piston portion 81 of expanding, and valve piston portion 81 forms a return-air mechanism by the return-air chamber 18 of rifle body with return gas channel 13.Return-air signal as the mark of the line f among Fig. 3 are to, container air inlet when valve piston portion 81 inwardly moves.

Operation principle: pull spanner 3, spanner 3 piston rod 8 and piston 9 overcome the inside horizontal movement of return unit 91 elastic force, gas in first cavity 14 is opened check valve sheet 61 by the first gas passage 1a, form one air-flow, simultaneously, gas in second cavity 15 is successively by the second gas passage 1b, the liquid that the transverse opening 71 of backing member promotes in the backing member 7 leads to check valve 6, liquid mixes with the air-flow that comes out from check valve sheet 61 by check valve 6 backs, produce the one-level foam, then successively by second screen cloth 52 and first screen cloth 51, produce multistage foam, at last from shower nozzle 2 ejections; After unclamping spanner 3, piston rod 8 and piston 9 reset, and check valve sheet 61 is closed, and liquid replenishes from container that to enter into backing member 7 stand-by.Repeat with this.

Claims

1, a kind of foam lance comprises

The rifle body has foam generation passage;

Shower nozzle is located at above-mentioned rifle body head;

Spanner is located on the above-mentioned rifle body rotationally;

It is characterized in that also comprising

2, foam lance according to claim 1, the foam generation passage that it is characterized in that described rifle body comprises horizontal channel and Vertical Channel, the direction of motion of described piston rod is parallel with aforesaid horizontal channel, and vertical with aforesaid Vertical Channel, described check valve then is located in the aforesaid Vertical Channel.

3, foam lance according to claim 2 is characterized in that described screen cloth is two, a close described shower nozzle setting, and another also is positioned at described Vertical Channel near described check valve setting.

4, foam lance according to claim 2 is characterized in that also being provided with in the described Vertical Channel backing member with central passage, and the inlet of backing member is connected with described unidirectional feed liquor mechanism, and the fluid port of backing member is connected with the inlet of described check valve.

5, foam lance according to claim 4 is characterized in that the fluid port of described backing member has transverse opening, and this transverse opening communicates with described second gas passage.

6, foam lance according to claim 1 is characterized in that described check valve sheet is shaped in the sidewall of described check valve, and the V-shaped inverted cone-shaped of the head of described check valve.

7, according to the described foam lance of arbitrary claim in the claim 1 to 6, it is characterized in that described rifle body has a return gas channel that communicates with described unidirectional feed liquor mechanism, described piston-rod lower end has a valve piston portion, and this valve piston portion forms a return-air mechanism by the return-air chamber and the aforesaid return gas channel of described rifle body.

8,, it is characterized in that described unidirectional feed liquor mechanism comprises according to the described foam lance of arbitrary claim in the claim 1 to 6

The pump housing is located at described rifle body feed liquor port and upper end and is had a V-type liquid outlet;

9, foam lance according to claim 8 is characterized in that the bottom of the described pump housing is connected with a water inlet pipe.

10, foam lance according to claim 1 is characterized in that described first cavity and second cavity are coaxial setting, and accordingly, described piston then is made up of inner carrier portion and outer piston portion.