DE4324607A1 - Hand-operated fluid spray - Google Patents

Abstract

The hand-held spraying device has a pump chamber (4) with inlet (7) and output (8) valves operated by a hand-trigger. The inlet valve (7) is mounted in a piston with a sleeve (5), moved by the trigger, and sliding over a fixed inner piston (6) which contains the outlet valve (8).A nozzle device (R) is fitted to break up the spray (3) to encourage the prodn. of foam. It may have crossbars in the fluid passage to break up the fluid flow, and the fluid passage may have a conical taper narrowing toward the outlet end, to accelerate the flow of fluid. The nozzle is hinged so that it can be swung up out of the way.

Description

The invention relates to a hand-operated spray pump with influencing your foaming Spray jet, with a nozzle, a hand lever, one an inlet and an outlet valve having a pump chamber in a pump housing, and a subsequent outlet nozzle se.

A hand-operated spray pump of this type is through the DE-PS 29 25 528 known. The distance between your mouth the nozzle and the perforated plate formed here by a sieve te as an outlet nozzle in combination with the core of the peripheral free zone hitting the spray produce a foaming of the liquid in one of the Chamber upstream of the nozzle. About said free zone air is drawn into the chamber. Alternatively, you can radially arranged openings of the chamber to this Effect.

Structural details of the generic spray pump reveal derives from DE-GM 91 12 697 and DE-OS 41 00 558.

The object of the invention is a generic spray Pump as much as possible in the plastic injection process training to manufacture, to simplify components and at the same time to achieve a suitable foam formation chen.

This problem is solved by the specified in claim 1 bene invention.

The subclaims give advantageous further developments at.  

As a result of such a configuration, the stated task is solved on a generic spray pump. Is concrete proceeded so that in the spray direction to the nozzle then a nozzle pipe can be assigned, which is too tapered towards an outlet cross section. It was found, that by the taper in the formed by the nozzle tube Chamber when spraying a surprisingly high vacuum is built up. In return for the ejected Air flowing in liquid swirls the liquid with the result of an extremely strong shift enclosure. The mentioned radially arranged opening can with such a version of the spray head even come to an end, also the sieve by the Nozzle pipe simply a free outlet cross-section points. The beam is not through a lattice structure impaired in its intensity. It turns out further turns out to be advantageous that the nozzle tube has a wall has a circular cross section. A such a rotationally symmetrical wall, at least inner wall dung, corresponds to the goal also in mind equalization of the foaming effect. Advantageously, the taper mentioned is ko nically trained (with convergence towards the free end). An advantageous measure also results from that the conical taper to one in the axial direction upstream, essentially cylindrical wall closes. This allows a cross-section as large as possible Bottom of the chamber. That brings good foaming effect. It is also favorable that the conical taper supply in the cross section of the outlet nozzle concentric to Spray axis lying confined. Here is created for the air counterflow right from the start a swirling pre-zone over a "ridge". The turbulence is increased by the fact that the Inner wall of the nozzle tube is provided with ribs. Sol  che ribs have a deflecting effect on the largely in Foaming spray jet and are special effective if they are realized as cross ribs. Such Cross ribs expediently run in steps on the Inner wall of the nozzle tube. Your structure is so that the transverse ribs are one across the spray direction train the final stage. Such levels can be of equal Be broad and run in ever narrowing Ring shoulders until finally with the mentioned Indentation in the minimum cross section of the outlet nozzle break in. The fact that the Each step is undercut. A Another feature is that the step edge is convexly rounded. It is also proposed that the end edge of the nozzle tube facing the nozzle lips up and against the level of the mouth of the nozzle creates. This can happen up to a sealing system hen.

To also set towards a higher viscosity to be able to give high liquids foaming NEN, is on a foam sprayer with a Spray pump which supplies a liquid to a nozzle, and arranged with a distance in front of the nozzle Perforated plate of larger area than the cross section of the spray jet emerging from the nozzle in the area of the Perforated plate is suggested that the perforated plate of several, radial to a central hole, the Cross section is smaller than that of the incident Spray jet, directed spokes, whose leave inner ends between themselves, which are smaller or approximately equal to the diameter of the Lo ches. The spokes and the element that supports them one. The whole thing can therefore be injection molded in one piece. It is not necessary to assign a separate sieve basket  pers on him housing or the like. But here, too, the foaming effect is surprisingly good. Of the The core of the spray jet is torn open peripherally. Correspond The large number of spokes results in a rich, multi-digit splitting of the beam. He breaks through the center of the radially oriented, in a cross plane of the spoke ring lying in the direction of the beam through it. The fissure of the beam is rotational symmetrical and so completely equivalent. The breakthrough The "sieve" level leaves nothing to crass Deflections leading to central, complete cutting too, since the central, albeit small, hole is practical leaving a stable soul over the distances of the individual spokes fully preserved as a passage zone remains. These lateral distances between the inner ones The ends of the spokes are approximately the diameter of the hole the same or a little smaller. The Spei are appropriately rooted chen in a ring, so that the distances between the spokes outwards, d. H. to the root area of the same enlarge towards. This has a good impact on the Desired perfect foaming. So it is in Zen area a larger "sieve" density, while in the peripheral area the relatively larger, continuous rapidly expanding openings of the unhindered Serve air supply. On the other hand, it also has further training has proven to be favorable in that seen in the circumferential direction, shorter spokes and longer spokes alternate in such a way that the shorter ones Spokes end at a greater distance from the center. Here a second hole edge is circumscribed, as it were interspersed symmetrically by the longer spokes is. It is concentric with the central hole and narrow adjacent to it. To the efficiency of the foaming Erfin is also optimizing this solution a further design of even more independent  Meaning in the proposal, which is that the Spei roof on the inside facing the nozzle Form a surface whose ridge line faces the nozzle. It is useful to have a symmetrical roof, and approximately in such a way that equiangular roof slopes available. The spokes expediently have one equilateral triangular cross-section. The on the Spray jet portions striking roof slopes distracted and thus mix more effectively and faster with the air drawn into the chamber. Around the greatest possible hub proximity for those in the center creating connected spokes, it is beneficial that the spokes taper to the inner end. An embodiment takes effect in such a way that the Tips together in the plane of the outside of the hole lie flat. That just implies about the ends if a roof pitch training. Also results a kind of trich on the inside of the perforated plate ter, which not only centering and thus contributes to the foam jet, but also a scourge well movable, d. H. passing the ray vi creates a burning end zone of such spokes. The spokes are particularly flexible. They adapt to the jet inks sensitivity, so opening or closing more or less the central hole and the second, reverse set the hole contour by gently pulling the "Bor Most ". It also proves structurally advantageous that the perforated plate on the nozzle side to form a pot-shaped housing continues in a plug-in ring wall. This also simplifies the assignment. The Plug-in ring wall can be cylindrical or else funnel-shaped, whereby a stable assignment thereby is achieved that the nozzle-side edge of the plug ring wall has a locking bead with a clip groove on Pump housing or the like interacts.  

Then the invention proposes that only one Part of the inner ends of the spokes not to the brim of the hole is sufficient in a ring area around the hole ends and the hole from the inner ring rim of a thread cross is formed. Such an arrangement leads to an extremely pressure-stable perforated plate. The remains Edge splitting of the spray jet by the cantilevered preserved inner ends of part of the spokes. Of the The inner ring rim can be chosen larger. To still to get the desired atomization or foaming the hole circumscribed by the inner ring rim split the crosshairs. In this context he it further proves to be favorable that the inner ring wreath and other concentric ring wreaths like the Spei Chen are designed prismatic by a roof surface ridge line facing the nozzle. This makes them centrally oriented spokes over the entire "surface" the perforated plate is connected several times in a rotationally symmetrical manner; they "shake hands" while forming a circle. A Another structural measure is that the "Flä che "of the perforated plate aligned according to a cone jacket is, with the spray jet facing the cone tip. Last one re forms a center closer to the spray jet, but with the peripheral, annular mixing chamber practically table is not downsized. It’s also convenient that the conical surface is surrounded by a pot, whose inner wall is in the spray direction of the spray jet rejuvenated. That brings a further increase in mixing chamber. To make the pot structurally advantageous Including air supply, it is proposed that the Pot rim forms air intake openings on the plane the mouth of the nozzle. The air intake takes place this way the foam is at a maximum distance from the foaming zone spray device instead. The level is in the bil extension of the air inlet opening advantageously included. Wei  it proves to be particularly advantageous structurally, that perforated plate and pot are in one piece. You can as Injection molded part to be realized. An optimal in this regard Design exists when the perforated plate and pot are in one Visor flap of the foam spray device out in one piece forms are. Such a visor allows the Foam spray device also switch to a pure one Spray device (fixed jet).

A product protection as well as a use advantage a sturdy solution results from a rotary lock development / release of the foam spray device for the spraying / foaming liquid. The one to the nozzle leading exit route can be closed off tightly. For this a chick-like solution is used, the one fold is that the rotary lock / release via open-ended guide channels of a mandrel Foam spraying device and counter channels to a rotating confiscation is achieved. The latter turns on the even stationary mandrel or chick. Especially a sufficient angular distance between the two extremes positions is further achieved in that the Füh channels and the counter channels each arranged diametrically are and overlap each other in the longitudinal direction. Is the counterpart leading to a full shaft, is also due to the axial overlap Flow connection. It is also proposed that the Connect the counter ducts to a ring duct to which the pump came a distribution chamber is connected upstream. over this takes place an equal supply feed ways to the nozzle.

A particularly advantageous embodiment is thereby achieved that the foam spray device as with the pump housing clipped attachment  which is on the pump side as a holding cylinder for the Pump continues. Here an irreversible Klipsver Binding engage in such a way that from the free forehead at the end of the pump housing intervene in corresponding shafts of the front part. It is also a classic fastener Training that can be dispensed with is achieved in that also the pump piston of the pump with the holding cylinder is clipped. This can even be done in the way of the previous month ge done, that is, before assigned to the front part becomes. It proves with regard to the pump piston assignment structurally advantageous that the pump piston is clipped on the inside with the Haltge cylinder, wel cher, appropriately arranged freely, in flow direction of the self-moving pump cylinder overflow is cash. The corresponding clip assignment from Pumpenkol ben and holding cylinder creates an advantageous advance setting for the easy assignment of another Installed part by the exhaust valve between before set part and pump piston is axially captured. Here is not even a self-attachment of the exhaust valve required. Rather, one is simply through the above explained clipping of defined axial space used for mounting. However, if required Lich, but the exhaust valve still with the pump piston be clipped, which with the high flexibility of the the valve used plastic material no problem is. The other associated valve, namely the inlet valve til, however, is taken at the bottom of the pump cylinder. It can be assigned in the same way in terms of clip technology, specifically, this is achieved with a clip holder between rule inlet valve and an annular wall of the bottom of the movable pump cylinder.  

Regarding the hand lever of the pump, the one integral molded return spring is assigned, it turns out suspension technology as cheap that in the near distance to Root of the hand lever over a tongue as a return spring lateral material bars on the inside of the handle bel longitudinal leg is tied. This creates a supported connection of the tongue. A risk of breakage is practically impossible. This upstream Restraint proves particularly effective when the Material webs are made thinner than the one there Thickness of the leaf spring-like tongue is. The one in Gren zen created flexibility makes the spring arch sufficient with. It is also advantageous that the Wedge material webs in the direction of the root and in end at a distance approximately equal to the length of the Material webs corresponds.

Another embodiment of the invention exists in that the outlet valve of the pump chamber the nozzle of the Pump is. Such training simplifies construction additional form. A foaming technology even optimized te solution results from the fact that the outlet valve has a central, fixed pin that on its radial circumferential surface by an elastic is surrounded by the sealing lip. Is the required Pressure rate before, the sealing lip rises from the circumference Area from. It forms an envelope or tube-like, directed spray. The spray effect can be increased hen if the procedure is continued so that the exhaust valve til has a central fixed pin elastic on the front face of the pin has an overlying sealing lip, leaving one central opening that is smaller than the pin through knife. That brings about a crossing vortex of the he mentioned hollow jet in front of the annular gap here too  Jet. To keep the number of parts low, keep it up proceeded that the pin on integral webs to the Pump piston is connected. Regarding the part of the nozzle representing sealing lip proves to be an embodiment in that it is favorable that the sealing lip is part of a is essentially cylindrical cap, which is in Formation of the sealing lip tapered. By a such tapering remains in association with the mantle surface che of the pin an annular receiving space for the spraying or foaming substance. Because of the conical taper is also a certain Wall polydirectionality that the cap in itself stabilized. A simple, secure assignment of the Cap is achieved in that it is in the outer wall of the pump piston is clipped. An advantageous one leading annular gap as a nozzle is further obtained by that the cap is axially aligned with respect to the axis of the pin extending sealing lip portion. The lip is shaped like a short tube. in the There is a connection with the desired foaming advantageous training still characterized in that in Strö a foam spray device behind the nozzle is arranged, the outlet cross section of the Foam sprayer to the diameter of the hardest is matched. Here can be a vote grab the exterior of the hollow jet to the brim the outlet cross-section can occur, whereby the to Foaming required air in opposite directions hollow zone of the beam enters; or the ringför Mige jet is at the conical taper of the outlet mechanically broken cross section with the effect of a even stronger foaming. Finally, it is still being featured suggest that the diameter on the exit diameter water is matched to the outlet nozzle. So find here practically the free passage of the hollow beam instead  with the indicated central entry of the mixed air in Opposite direction to the exit of the jet.

The object of the invention is based on four illustrative examples len explained in more detail. It shows:

Fig. 1 is a vertical section of a spray pump according to the invention with foam spraying, unconfirmed adjusted to the yield of a spray jet, for example according to the first execution by having a pump head,

Fig. 2 shows a same section as Fig. 1, but adapted to foam spraying and operated,

Fig. 3, the foam spraying in isolated dergabe As seen in being folded upwardly nozzle tube against the nozzle,

Fig. 4 shows the section according to line IV-IV in Fig. 3,

Fig. 5, the foam spraying in Interior,

Fig. 6 is a support cylinder of the pump Inge instruction in front view,

Fig. 7 shows the section according to line VII-VII in Fig. 6,

Fig. 8 shows the section according to line VIII-VIII in Fig. 6,

Fig. 9 shows the section along line IX-IX in Fig. 6,

Fig. 10 the pump piston position of the spray pump in Einzeldar, in vertical section,

11 can be used as the inlet valve and outlet valve as a valve view of the spray pump. In Vorderan,

Fig. 12 shows the section along line XII-XII in Fig. 11 and

13 shows the section according to line XIII-XIII in Fig. 2, enlarged. And just partially displaced for greater clarity of the feed channels,

Fig. 14 is a vertical section through a pump head having a spray pump with the inventive foam spraying, unconfirmed, according to the second embodiment,

Fig. 15 is a same section as Fig. 14, however, operates

Seen the foam spraying from the front end thereof Fig. 16, greatly enlarged,

Fig. 17 shows the section along line XVII-XVII in Fig. 16,

Fig. 18 shows the section along line XVIII-XVIII in Fig. 16,

Fig. 19, the foam spraying as Herausvergröße tion of FIG. 14,

Fig. 20 shows the section along line XX-XX in Fig. 16, enlarged, cross-section depicting a spoke lend,

Fig. 21 is a variant of the foam spraying in end view as FIG. 16,

Fig. 22 shows the section along XXII-XXII in Fig. 21,

Fig. 23 shows the section along line XXIII-XXIII in Fig. 21,

Fig. 24 a of FIG. 19 corresponding Schnittdarstel lung as enlargement taken from Fig. 15,

Fig. 25 oriented in a perspective individual illustration of the center spokes, the roof surfaces illustrative and the different length representing,

Fig. 26, the foam spraying apparatus according to the invention in vertical section according to the third Ausführungsbei game, increased

Fig. 27 is the same in front view in folded away from the area of the nozzle, the orifice plate aufwei send visor

Fig. 28, this perforated plate, in an enlarged partial view

Fig. 29, the perforated plate in a vertical section, also enlarged,

Fig. 30 is a perspective view of a free end of a ringkranzgefesselten radial spoke,

Fig. 31, the foam spraying, however beam in representation as in FIG. 26 when folded up visor in order to obtain a non-foamed spray,

Figure 32 lung. The hand lever of the spray pump in Einzeldarstel,

Fig. 33 is a vertical section having a pump head by a spray pump with OF INVENTION dung according foam spraying, unbetät IGT according to the fourth embodiment, wherein the outlet valve at the same time forms the nozzle,

Fig. 34, the foam spraying as Herausvergröße tion of Fig. 33,

Fig. 35 is an exhaust valve, the corresponding de-shapes cap in rear view,

Fig. 36, the cap in longitudinal section;

Fig. 37 the cap in front view and

Fig. 39 is a variant of the outlet valve / nozzle in depicting lung as Fig. 34.

The second and third versions are shown below Example discussed in detail:  

The spray pump 1 shown in the drawing can be actuated via an automatically resilient hand lever 2 .

The spray pump 1 can be placed on a vessel, not shown, containing liquid to be foamed / sprayed, in particular associated with this in terms of screw technology.

The actual pump bears the reference number 3 . It has a pump chamber 4 , formed in part from a pump cylinder 5 and a hollow pump piston 6 . The latter is certain.

An inlet valve 7 and an outlet valve 8 are located in the pump chamber 4 .

The trigger-like, double-armed hand lever 2 is mounted on an axis of rotation 9 oriented transversely to the horizontal pump movement. The actuatable arm of the double-armed hand lever 2 continues beyond the axis of rotation 9 upwards into a short lever arm 11 . The latter acts on a rear surface 12 of the pump 3 , ie the pump cylinder 5, and sits at the other end in front of an integral, resilient riser pipe arrangement of the spray pump 1 . The pump cylinder 5 is moved when the spray pump 1 is actuated against the fixed pump piston 6 . It overflows the latter. A nozzle 13 is located on the output side of the pump 3 . The aforementioned outlet valve 8 öff net due to a pressure in the pump chamber 4 or the Pumpkol ben 6 pending. These processes are shown in FIGS. 14 and 15.

Furthermore, the pump piston 6 forms in its front, ie nozzle-side area, a conical sealing surface 14 here (see FIGS. 19 and 24), which cooperates with a spherical cap-shaped or conically shaped sealing part 15 of the outlet valve 8 . The outlet valve 8 is connected to a fastening collar 17 via radial webs 16 . It is formed in one piece with the fastening collar 17 . The latter is received in a peripheral recess 18 of the pump piston 6 . The circumferential recess 18 extends up to a front end of the pump piston 6 on the nozzle side.

On a nozzle-side end face 19 of the exhaust valve 8 , the nozzle 13 is biased, that is, a disk writing it. The latter is uniformly ausgebil det with a mounting cylinder 20 as an injection molded part. The nozzle 13 or the disk is connected to the mounting cylinder 20 via a membrane 21 . In the sprayed state, the annular disk-shaped component which forms the nozzle 13 protrudes further into the interior - axially displaced, for example, in the direction of the inlet valve 7 in FIG. 11, so that, in the installed state, he desires a bias on the outlet valve 8 . In order to be able to maintain this desired preload technically, the mounting cylinder 20 is latched to the pump piston 6 in the illustrated embodiment. For this purpose, a circumferential locking bead 22 is formed on the pump piston 6 , which engages in a corresponding locking recess 23 of the mounting cylinder 20 .

The connecting membrane 21 is otherwise formed as a closed ne connecting blanket so that no liquid escapes at the opening of the nozzle 13 during a Pumpbe movement.

To ensure the fluid path, flow paths 26 are saved in the forehead de 19 of the outlet valve 8 and / or the underside 25 of the disk 13 forming the disk.

The mounting cylinder 20 merges in the area of the connection of the connecting membrane 21 into a larger radius outer jacket 27 . The outer jacket 27 is, for example, bumped into a surrounding pump housing 28 .

The foam spray device S assigned to the spray pump 1 has a perforated plate 29 . It is, like the central nozzle 13, of circular outline. The perforated "area" of the perforated plate 29 is significantly larger than the cross-sectional area of the foaming spray 30 of the nozzle 13 that strikes the perforated plate 29 .

The perforated plate 29 is formed from a plurality of spokes 32 directed radially towards a central hole 31 . The cross section of the inner spoke ends 32 'around the written, central hole 31 is smaller than that of the impinging spray jets 30 (see FIGS. 19 and 24). The diameter of the hole 31 is 0.5 mm.

The spokes 32 lie in a common plane. This plane extends vertically or transversely to the longitudinal central axis xx of the pump chamber 4 and thus to that of the spray jet 30 . The perforated plate 29 takes a clear distance from the mouth of the nozzle 13 formed by a round hole. The distance is about 5 mm.

The free-flying spokes 32 leave lateral distances y between them in the vicinity of the central hole 31 , which are smaller or approximately equal to the diameter of the hole 31 . These small distances y, which are of equal dimensions in the circumferential direction, initially remain essentially constant, but then increase significantly in the direction of the periphery of the perforated plate 29 . These sector-like enlargements are designated by 33 . They result from the same width of the radial spokes 32 present in this area. Your inward th, free, so inner ends 32 'run against it zen tral pointed. There is a symmetrical taper seen in the top view. The tips are called 34 . Periphery goes y, continuously increasing, about twice the distance.

As seen from FIGS. 16 and 21, which further related embodiment is such that, in the direction of circumference seen shorter spokes 32 and longer SpeI chen 32 alternate. Since the longer spokes 32 for the delimitation of the central hole 31 come very close, not all spokes 32 can protrude into this center in the illustrated plurality, for which purpose the shorter spokes 32 end at a greater radial distance from the center of the hole 31 . In this way, despite a large spoke density, a perforated plate 29 , which is sufficiently centrally provided with flow obstacles, can also be achieved.

A total of sixteen spokes 32 arranged at equal angles are realized, ie eight long and eight short according to the above formula. The second, formed by the radially set back, shorter spokes 32 hole front, referred to as hole 31 ', also extends in the core cross section of the spray jet 30 (in the drawing, the shorter spokes 32 are exaggerated for reasons of clarity). The foaming spray is optimally "cut open". The tapered ends 32 'split the spray jet, which strikes as through a bristle body. This leads to a surprisingly intense foam formation, especially since around the central jet 30 around a mixing chamber 35 is formed, in which over the peripherally broadened th enlargements 33 of the distances y a rich air enters through the perforated plate 29 is given. The enlargement stanchions 33 are the radial slot-like, sector-shaped spaces between the spokes 32 .

Optimizing with regard to obtaining a stable, ie dry foam, the further measure also has an effect, which is that the spokes 32 form a kind of roof surface on their inside facing the nozzle 13 , consisting of two equally sloping flanks or roof slopes a , b. The radially directed ridge line of these roof slopes has the reference symbol c. The cross section of the roof-forming spokes is shown in FIG. 20 and relates to both the long and the short spokes 32 . The incident blasting parts are deflected due to the sloping ceilings and are therefore swirled more intensely and enriched with air in the mixing chamber 35 . For the corresponding deflection there is sufficient opening area available, especially since the perforated plate 29 has practically only a single, albeit richly jagged, hole which forms an outlet nozzle D.

The shape of the inner ends 32 'of the spokes 32 in Fig. 25 also shows that the roof slopes continue into the area of the tapering, if there also interrupted faceted. These tapering triangular surface sections of the roof slopes a, b are designated there with a 'and b'. As can be seen, the ends 32 'forming the tips 34 ' of the spokes 32 run out together in a plane which lies on the outside of the perforated plate, that is to say the side facing away from the nozzle 13 . Following the correspondingly inclined contour of the ridge line c, a kind of funnel T is created by the tapering (compare, for example, FIGS. 17 and 22). The funnel T also lies not only in the center but also in the cross-sectional area of the spray jet core.

As far as the assignment of the foam spray device S is concerned, a way is chosen here such that the perforated plate 29 continues on the nozzle side into a plug-in annular wall 36 . The latter forms a housing in front of the nozzle area, creating the aforementioned mixing chamber 35 .

According to embodiment of Fig. 24 is a cylindrical plug-ring wall 36.

Of FIG. 19 is a funnel-shaped plug-in annular wall 36 is preferred. It tapers towards perforated plate 29 . The wall slope is 45 °.

Both types form on their nozzle-side edge a latching bead 37 which enables the plug connection. According to variant Fig. 24 this is on the inside. It engages in a peripherally opening clip groove 38 of the disc body holding the nozzle 13 ent.

In contrast, the embodiment according to Fig. 19 provides a directed from Windwärts latching bead 37 which snaps into an accordingly inward Klipsnut 38 of Außenman means of 27th This mixing chamber 35 is thus seated on a fixed part, while the above-described mixing chamber 35 according to FIG. 24 is seated on the movable one, the nozzle 13 forming the disc, which is movable over the membrane 21 on the outer jacket 27 forming an insert here. Both variants contain both types of assignment described for selection.

It is understood that the foam spray device S can also be installed on another spray pump as described, on a not yet published utility model application G 91 12 697.5 declining Solution.

The larger hole 31 'is concentric with the central hole 31st

The spokes 32 can be connected to one another, for example via one or more ring rings, except in the peripheral connection region between this and the hole 31 .

A foam spraying device S with perforated plate 29 , the spokes 32 of which are connected by such ring rings, results from the third exemplary embodiment of the invention described below ( FIGS. 26 to 31). The reference numbers are used accordingly, sometimes without repeated text.

The modification here refers to the fact that only a part of the inner ends 32 'of the radial spokes 32 does not extend to the edge of the hole 31 . They end much more in a larger hole 31 'circumscribing hole front (see Fig. 28). This larger diameter hole 31 'leaves an annular area 39 around the smaller diameter, centrally located hole 31st

The hole 31 is further surrounded by an inner ring ring 40 . Connected to the material, every second radially directed spoke 32 runs into them . On the other hand, the spoke 32 in between jumps back, as indicated.

The inner ring rim 40 follow in ring concentric Anord ring rings 41 , 42 , 43rd Their radial distance from one another corresponds to a multiple, for example four to eight times the width of the radial spokes 32 . There is a uniform angular distribution of the entire spokes 32 . There are sixteen.

Spokes 32 and ring wreaths 40 to 43 have a cross section as is explained in detail in FIGS . 20 and 25. With regard to the roof slopes a and b, the same designation is also used for the ring wreaths 40 to 43 . These ring prisms 40 to 43, which are also prismatic in shape, thus also face the nozzle 13 with their ridge line c.

Four of the radial spokes 32 continue over the inner ring rim 40 into the center. They are knot-connected there and form a so-called crosshair 44 . About this crosshair, the relatively large central hole 31 is evenly divided, namely preferably quartered. A quarter corresponds in terms of the perforation area to the perforations of the perforated plate 29 formed by the rotationally symmetrical lattice. The intersection of the cross hair 44 runs in the central axis of the spray jet 30 . The symmetry of the roof shape creates an equal cutting of the spray jet core.

The ends 32 'of the shortened, rich in the Ringbe 39 projecting spokes 32 wedge symmetrically. This creates breast or snow plow-like breast surfaces 45 . They reduce the free opening cross-section, so that there is approximately the same as the openings of the next ring rim. The corresponding compensation towards the outside can be achieved by increasing the proximity of the ring rings.

Fig. 29 shows in solid lines a planar shape of the perforated plate 29th According to an advantageous modification, it is also provided that the "surface" of the perforated plate 29 is aligned with a conical surface. The corresponding obtuse-angled conical shape is indicated in FIG. 29 by a dash-dotted line. The tip 46 of the cone shell points in the direction of the spray jet 30 or against the nozzle 13 . This measure not only leads to greater surface stability of the perforated plate 29 , but also brings a good, equal distribution of the spray jet 30 for foaming. The cone height corresponds to approximately a quarter radius of the perforated plate 29 .

Furthermore, the conical surface of a pot 47 ben ben. This pot 47 contributes to the formation of the mixing chamber 35 . Perforated plate 29 and pot 47 are in one piece, and appropriately molded from plastic.

As can be seen from the drawings, the inner wall 48 of the pot 47 tapers in the direction of spraying of the spray jet 30 (see FIG. 26). This results in a concentration in the atomization zone, but creates a continuously enlarging mixing chamber 35 in the rear area. The degree of tapering of the wall, in particular inner wall 48, is approximately 15 ° to 30 °.

While in the second exemplary embodiment described the air flows in frontally via the sectoral enlargements 33 in the opposite direction to the spray direction of the spray jet 30 , in the third exemplary embodiment this supply also takes place via peripheral air inlet openings 49 . The latter are partially formed on the edge of the pot. This is done by forming niche-like recesses across the entire width of the pot wall from the front edge. The portion of the formation of the air inlet openings 49 on the part of the foaming device consists in the use of a vertical wall surface of a front part 50 of the foam spraying device S which can be clipped onto the spray head of the spray pump 1. It is a plane 51 of the mouth of the nozzle 13 .

Perforated plate 29 and pot 47 are also formed on a visor flap 52 of the foam spray device S and the front part 50 , respectively. Here too, attention is paid to a one-piece design both with one another and with the attachment part 50 . As can be seen from a comparison of FIGS. 26 and 31, only the visor flap pe 52 needs to be removed from the spray jet region in order to generate an unfoamed spray jet 30 . This can be done by folding up, as can be seen from FIG. 31. The folded-up position and the foam-correct operating position of the pot 47 are locked. The folding axis is provided with the reference number 53 . It is a pair of film hinge.

The hand-operated spray pumps 1 according to the two previously described exemplary embodiments two and three of the invention bring about the creation of the chamber or mixing chamber 35 , the basic proposal of a funnel-shaped ring wall, which is implemented there as a plug-in ring wall 36 (see FIGS. 19 and 26). In both proposed solutions, at least from the mixing chamber 35 , a taper in the direction of the exit of the spray jet 30 is present. A bevel on the inner wall is sufficient. The inner wall in FIG. 26 is designated by 48 .

The base end of this basic idea (first) execution example of Fig. 1 to 13 used an alterna se for use can be brought nozzle pipe R. The latter leaves, placed in position (see FIG. 2), on the free tapered end, an outlet section 54 .

Said outlet section 54 is free, opposite the larger clear diameter of the chamber Respek tive mixing chamber 35 that is significantly querschnittsverringerte opening of the nozzle pipe 3 carries no orifice plate.

Free outlet cross section 54 also means that the expanding spray jet 30 can pass foamed.

The wall of the nozzle tube R shown, viewed in cross section, runs circularly, thus concentrically surrounds the coaxially continuing axis 30 of the longitudinal central axis xx of the pump chamber 35 in the shaped spray jet 30 . Since this is also an annular wall, the corresponding reference number from the two exemplary embodiments described above is also used here, namely 36 .

The taper of the nozzle tube R does not extend over the entire axial depth of the same; rather, a good third of the axial depth falls on a substantially cylindrical section of the nozzle tube R. This cylindrical section of the same is provided with the reference number 55 , the taper dage gene with 56th The taper 56 is conical. The cylindri cal section 55 is upstream of this conical taper 56 in the axial direction; 55 extends towards the nozzle 13 , more precisely the plane 51 of the mouth of the nozzle 13 .

The outlet cross section 54 of the nozzle tube R has a clear diameter which corresponds approximately to the radius of the base of the taper 56 . In contrast, the clear diameter of the base corresponds to the axially measured depth of the nozzle tube R.

As can be seen from the enlargement of the nozzle tube R shown in FIG. 4, the conical taper 56 merges into a radially inward recess 57 in the area of the outlet cross section 54 or the outlet nozzle D. This forms a practically cutting-like ridge, which surrounds the spray jet axis concentrically.

The inner wall of the ring wall 36 of the nozzle tube R is roughened. The roughening consists of molded ribs. These are transverse ribs 58 . These extend without interruption both from the cylindrical section 55 and from the taper 56th As shown in FIG. 4 is further removed, the transverse ribs 58 are stepwise arranged. While in the more cylindrical section 55, the gradation brings an inward movement of the inner wall of the nozzle tube R in smaller increments, the gradation in the concisely conical section continues to fail. The steps as an annular staircase in the spray direction are designated 59 . The step jump 60 of each step 59 is undercut. The step edges, on the other hand, are rounded convexly across.

The other, broader end of the nozzle tube R lies abge in the foaming position of the foam spray device S supports against the plane 51 as the area surrounding the nozzle 13 . There is a sealing system there. For this purpose, the front edge te of the nozzle tube R which faces the nozzle 13 or the level 51 lips out. The corresponding lip bears the reference number 61 .

The function of this screen-free foam spray device S is as follows: The spray jet 30 which emerges vigorously through the nozzle 13 passes through the mixing chamber 35 with strong swirling of the air flowing in in the opposite direction via the narrowed mouth of the outlet nozzle D due to negative pressure. This mixes the spray jet 30 to a high degree and leads to intensive foam formation, the roughening of the inner wall of the nozzle tube R optimizing the foam formation.

This effect is supported by a swirling device VE upstream of the nozzle 13 on the pump side, which practically "twists" the spray jet in the nozzle 13 .

The nozzle tube R is molded like the pot 47 described for the third embodiment, a visor flap 52 of the foam spray device S or the attachment part 50 . The visor flap 52 is connected in one piece to the attachment part 50 via the film-like kidney-like folding axis 53 . Regarding the actuation function, reference is made to the explanations for the third embodiment example. The reference numbers apply mutatis mutandis.

The spray pump 1 allows the jet to be locked / released. This prevents leakage. In this regard, the structural development is used that, in the first exemplary embodiment ( FIGS. 1 to 13), the attachment part 50 is mounted rotatably about the longitudinal central axis xx about the mounting cylinder 20 designed as an adapter. In this way, a tight blocking position and a ready-to-spray position can be easily achieved by rotating said component. With a 90 ° division of the full 360 ° rotation path, the next position could be reached alternately after 90 °. This is particularly advantageous in the case of a congruent, square base, tear of the attachment part 50 and the outer jacket 27 of the holding cylinder 20 .

The extreme positions can be adapted to this.

The rotationally fixed fixation of this overall part Außenman tel / holder cylinder 27/20 is done by means of locking device 62 , which start from the corresponding end face of the pump housing 28 and engage in corresponding shafts te 63 , which above them molded shoulders 63 'form the counter-locking means. With regard to the inseparable arrangement of the shafts 63 , reference is made to FIG. 6. The upper shafts 63 are oriented horizontally, the lower two vertically. They are located in the corners of the component which is practically square in outline.

In the configuration of the spray pump 1 according to the first exemplary embodiment, the same internal structure is used in principle, ie the pump 3 consists of a pump chamber 4 , formed in part from a pump cylinder 5 and a hollow pump piston 6 . However, the valves, namely the inlet valve 7 and the outlet valve 8 , are of identical design and are assigned to the pump cylinder 5 or the pump piston 6 by way of the latching connection. The valves are made of sufficiently flexible material so that their fastener body simply here, resiliently movable integrally to the base body of the valves can be molded on radial webs sixteenth The radial webs 16 are, as shown in FIG. 12, it is angled to extend the webs in an S-shape, which gives the conical sealing part more resilience.

In the case of the outlet valve 8 , the edge of the valve body pointing in the foam spray direction, ie its fastening collar 17 , enters centered in a V-slot groove. The valve body is so axially secured, between the rule's rule 20 and the stationary Pumpenkol ben 5 taken.

The pump chamber 4 is formed in the transition region between the holding cylinder 20 and outer jacket 27, a distribution chamber 64 . The flow technology is connected via a ring channel 65 with the nozzle 13 . The annular channel 65 is formed on the basis of a cylindrical mandrel 66 which is integrally formed on the holding cylinder. The last rer is connected via radial webs 67 to an annular wall 68 which runs concentrically and at a distance from the outer jacket 27 of the entire part 27/20 .

The outer surface of the central, cylindrical mandrel 66 has guide channels 69 which are open radially outwards in the vicinity of the nozzle 13 . The latter interact with counter-channels 70 . These are realized on the inside of a pot-shaped gene, forming an annular wall recess 71 in the back of level 51 . This is also cylindrical inside and outside, the counter channels 70 are also diametrically opposed to each other.

As can be seen in FIG. 1, the guide channels 69 axially overlap the rectified, corresponding Gegenka channels 70 . The medium can therefore flow in the direction of the nozzle 13 as long as the two channels 69 , 70 mentioned form an overall channel, that is, the diametrical alignment device is the same. By turning the attachment 50 , which is braked by frictional engagement, for example by 90 °, the inward opening of the counter-channels 70 lies in front of the blocking outer surface of the mandrel 66 . The medium cannot flow. The fugue makes you tend.

The further transport of the liquid extends over the free end of the central mandrel 66 . This forehead de is orderly jagged, as can be seen from Fig. 6 men. Part of the fracture are three radial channels 72 , which are arranged in an equally distributed manner. The channeling results from the attachment part side through the back of the transverse wall of the attachment part 50 forming the plane 51. The radial channels 72 converge in a star shape in the center. This area is somewhat enlarged in volume by a blind bore 73 .

The actual flow connection is, however, achieved by a peripheral notch 74 . It can also be a chamfer. It is only neces sary to make it continuously ring-shaped so that the liquid can flow in a well-distributed manner through the ring channel thus created. The radial channels 72 have an angle of attack leading from the radial. In the central region, the channels 72 are also drawn in like wasp waists, so that a sudden expansion occurs after the lock zones thus achieved, which additionally serves the desired swirling effect.

The nozzle 13 has a clear diameter which corresponds approximately to that of the blind bore 73 . There are therefore clearly narrower room or passage sections than is achieved in the central meeting point of the radial channels 72 .

With regard to the clipping of or between the holding cylinder 20 and the pump piston 6 , the same means are used in principle, that is to say in turn a circumferential locking bead 22 on the pump piston 6 and a corresponding locking recess 23 on the holding cylinder 20 . However, there is an irreversible connection due to the corresponding nose-like Rastpro fil. Otherwise, a protruding bead is sufficient, e.g. B. ring bead with appropriate clamping effect (plug-in clamp).

Also between the attachment part 50 and said ring wall 68 , a clip connection is realized by a nose-shaped latching bead 75 lying on the cylindrical jacket wall of the ring wall 68, which snaps into a correspondingly shaped latching recess 76 of an inner, cylindrical pot wall 77 of the attachment part 50 . These locking means are rotationally symmetrical, so they make the desired rotational movement of the attachment part 50 with no damage. The pot wall 77 extends concentrically to the pot-shaped indentation 71 and also starts from the back of the transverse wall forming the level 51 . To optimize the clip holder 75/76 , in particular the Rastfle xibility, the ring wall 68 is axially split. This is also that of the front part 50 . This also has a material-saving effect. The ring gap of the ring wall 68 is designated 78 and is open in the spray direction, the ring gap 79 of the attachment part 50 points in the opposite direction. The annular gap 79 can change in its clear width (see FIG. 5).

The attachment part 50 and the outer jacket 27 are supported in a well-guided manner from opposite sides of the two parts.

The remaining reference numbers of the device of the spray pump 1 are entered without text repetition, that is to say readable from the second exemplary embodiment.

While the outlet valve 8 is held in an axially defined annular space in the correspondingly widened joint between the holding cylinder 20 and the pump piston 6 , the inlet valve 7 is held on the bottom of the movable pump cylinder 5 facing the pump chamber 4 . For this purpose, a free-standing ring wall 81 surrounding the central feed channel 80 of the spray pump 1 extends from the rear side surface 12 of the pump 3 of the said pump cylinder 5 . To increase flexibility, this too is provided with an annular gap 82 opening towards the pumping chamber 4 . The jacket wall of the ring wall 81 is undercut for the self-locking mounting of the fastening collar 17 of the inlet valve 7 . Here too, a clip holder is used, using the resetting ability of the valve-forming material.

Now for details of the hand lever 2 : It has an integrally formed, as a whole designated 83 return spring. With regard to the return spring 83 , the tongue 84 is cut free from the practically frame-shaped body of the hand lever 2 . The frame shape proceeds from Fig. 32 (sheet 1/13 ) of the drawing. The cut-out tongue 84 is rooted in the region of the free end of the hand lever 2 . The root bears the reference number 85 .

The free end of the tongue 84 runs in an arc-shaped manner and points downwards. This free, bow-shaped end has the reference symbol 86 . It is based in a gusset between the bottom of a pair of ge designed bearing eye 87 and the outer wall of a neck 88 of the spray pump 1 . With regard to the curvature, a prestress can be used. In this way, a spring force obtained from the material of a component is provided, which makes the use of an additional classic spring on the pump 3 generally unnecessary. Accordingly, the disposal, i.e. recycling, is simplified.

As can be seen from the graphical representation (for example FIGS. 1 and 32), the axis of rotation 9 forms an intermediate web of the hand lever 2 which forms an overall long rectangular frame. The upper shorter frame leg is a bridge 89 , the lower the root 85 .

In close proximity to the root 85 of the hand lever 2 , the tongue 84 is still connected to the frame via lateral material webs 90 . Said material webs 90 bound the inner sides of the hand lever longitudinal legs to the corresponding longitudinal sides of the tongue 84 shaped as a leaf spring. As illustrated in FIG. 1, the material webs 90 are recognizably thinner than the thickness of the tongue 84 there . In addition, the material webs 90 decrease in thickness in the direction of the root 85 . They wedge out to zero. The wedge tip ends at a distance from the root 85 which corresponds approximately to the length of the paired material web 90 measured in the longitudinal direction of the tongue or the hand lever 2 . This means that the lateral spacing gap 91 between the narrow sides of the tongue 84 also forms in the area below the material webs 90 ; this is the same name there. The total gap is therefore only interrupted by the narrow material bridges, ie material ridges 90 .

As a result, the transition point 92 between the root-side cross-sectionally relatively small end of the tongue 84 is protected from excessive use loads. The root-side end is in the practically steerable area of the transition point 92 effective again at a distance from it and supported without major restriction of the mobility. The material webs 90 take part in the movement of the spring. As can be seen, the material webs 90 are arranged in closer proximity to the rear of the hand lever 2 . The back of the material bridge is aligned with the container-side rear of lever 2 in the position according to FIG. 2. There, the return spring 83 , which diverges in the basic position ( FIG. 1), has predominantly entered the interior of the long rectangular frame of hand lever 2 or the frame has moved over the tongue. In order to ensure the guidance also in the area of the free end 86 of the return spring 83 , cheek 93 directed backwards extends from the hand lever longitudinal legs of the hand lever 2 , so that there is no running. The cheeks are flush with the inside of said longitudinal legs.

The basic structure of the spray pump 1 according to the fourth exemplary embodiment is based on that shown in FIG. 14, the further development being that the outlet valve 8 of the pump chamber 4 is also the nozzle 13 of the pump 3 . The reference numerals are used accordingly, here again partly without text repetitions.

The nozzle 13 is now an annular nozzle. Part of the same is a central, fixed pin 94 of the pump piston 6 . It ( 94 ) is cylindrical in shape and protrudes approximately into the middle of the mixing chamber 35 . Its radial peripheral surface is surrounded there by an elastic or flexible sealing lip 95 . The restoring force inherent in their material keeps them in contact with said peripheral surface with a slight preload. Only an increase in the pressure in the pump chamber 4 leads to the opening of the annular nozzle 13 . The sealing lip PE 95 is flush with the end face 94 'of the pin 94 .

The spray jet bears the reference symbol 30 . It falls out here as a kind of enveloping jet, which is hollow inside.

A look at Fig. 38 reveals a variant in which the outlet valve 8 also has a central, festste existing pin 94 , but in which the sealing lip also designated here with 95 rests on the end face 94 'as a sealing seat. Here, however, the sealing lip 95 is not aligned axially, but according to a conical surface. Recognizable, the end face 94 'itself has a conical surface. The cone is relatively blunt. The slope is approximately 30 ° to the normal. The base surface aligned transversely to the longitudinal center axis xx, which merges peripherally into the cylindrical peripheral surface of the pin 94 , can be regarded as normal. The central opening of the sealing lip 94 spanning the cone edge is designated by 96 . It is a circular opening, the inside diameter of which is smaller than the outside diameter of the pin 94 . The here corresponding to the conical surface area from the feed direction concentrating jet is still broken iii of the mixing chamber 35 and according to the foam device S also placed here. It can be the nozzle tube R tapering towards the outlet cross section 54 or, as shown, around the described plug-in ring wall 36 , with or without perforated plate. The plug-in ring wall 36 is preferred here, namely in the tapered in the spray direction, the version. The outlet cross section 54 of this foam spray device S is matched in diameter to the outer diameter of the pin 94 , that is to say leave it a little larger with regard to the corresponding divergence of the spray jet 30 . The jacket wall of the spray jet 30 extends to the edge of the hole of the outlet cross section 54 of the outlet nozzle D.

Alternatively, however, the procedure can also be as described in the first exemplary embodiment, in that the edge region of the spray jet 30 rests against the conical taper 56 within the nozzle tube R with the correspondingly explained mixing or foaming effect. In return, under the prevailing vacuum situation in the mixing chamber 35 , air enters the mixing chamber via the cavity of the spray jet 30 , the wall of which breaks through it radially within the mixing chamber.

With regard to structural details, it should also be pointed out that the pin 94 is connected to the pump piston 6 via radial webs 97 . The pump chamber 4 passes through to the free end of the pump piston 6 . An annular space 98 comparable to the annular channel 65 of the first exemplary embodiment thus remains around the radial peripheral surface of the pin 94 . In this annular space 98 , the medium is well distributed for application via the ring-shaped nozzle 13 . The webs 97 are integral. They act as material bridges between the tubular pump pistons 6 and the centrally molded pin 94 and act in advance as a flow divider. The integra len webs 97 are more facing the pump chamber 4 .

The sealing lip 95 is part of an essentially cylindrical cap 99 . The has a cylindri cal wall and goes in the direction of the spray 30 into a conical taper. The latter forms a kind of funnel on the inside, which adjoins the annular space 98 in terms of flow technology. The degree of taper corresponds to the information given above with regard to the sealing lip in FIG. 38. Following the taper 100 , the cap 99 continues axially in the exemplary embodiment according to FIG. 34, ie the cap 9 has an axially with respect to the Axis of the pin 94 extend the sealing lip portion in the form of a short tubular portion. The length of this tube is approximately 1 to 2 mm. This cylindrical sealing lip section has the reference number 101 . He can tip out.

The cylindrical cap 99 is fastened by clipping to the outer wall of the pump piston 6 . The outer wall has an annular groove 102 in the foot region of the cap 99 , into which an inwardly directed rib 103 of the cap 99 snaps. The rib is hook-shaped in cross section. The gap between the portion 99 carrying the cap and the inner wall of the holding cylinder 20 is called 104 and is of such a radial width that the thickening end forming a holding collar, ie rib 103 , can pass unhindered for the purpose of engaging in the groove 102 .

The in the above description, the drawing and Features of the invention disclosed in the claims can both individually and in any combination for the realization of the invention may be of importance. All the features disclosed are essential to the invention. In the disclosure of the application is hereby also the Disclosure content of the associated / attached priori full documents (copy of the pre-registration) included.

Claims (53)

1.Manually operated spray pump ( 1 ) with the influence of its spray jet ( 30 ) which causes foaming, with a nozzle ( 13 ), a hand lever ( 2 ), a pump chamber ( 4 ) with an inlet and outlet valve ( 7 or 8 ) in a pump housing ( 28 ) and a subsequent outlet nozzle (D), characterized in that a nozzle tube (R) is then net in the spray direction to the nozzle ( 13 ), which tapers towards its outlet cross section ( 54 ). 2. Spray pump according to claim 1 or in particular according thereto, characterized in that the nozzle tube (R) has a free outlet cross section ( 54 ). 3. Spray pump according to one or more of the previous ones the claims or in particular according thereto, thereby records that the nozzle tube (R) with a wall in Cross-section circular circulation. 4. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the wall is an annular wall ( 36 ). 5. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the taper ( 56 ) is conical. 6. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the conical taper ( 56 ) adjoins an upstream in the axial direction, substantially cylindrical wall. 7. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the conical taper ( 56 ) in the outlet cross section ( 54 ) of the outlet nozzle (D) has a concentric to the spray jet axis xx retraction ( 57 ). 8. Spray pump according to one or more of the preceding the claims or in particular according thereto, thereby records that the inner wall of the nozzle tube (R) with Ribs is provided. 9. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the ribs are transverse ribs ( 58 ). 10. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the transverse ribs ( 58 ) are stepped. 11. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the transverse ribs ( 58 ) each form a transverse to the spraying stage ( 59 ). 12. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the step change ( 60 ) of each step ( 59 ) is undercut. 13. Spray pump according to one or more of the preceding the claims or in particular according thereto, thereby indicates that the step edge is convexly rounded.   14. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the nozzle ( 13 ) facing end edge of the nozzle tube (R) lips out (lip 61 ) and bears against the plane of the mouth 51 of the nozzle 13 . 15. Manually operated spray pump ( 1 ) leading to foaming (foam spray device S) influencing a spray emerging at a nozzle ( 13 ) spray jet ( 30 ) with a hand lever ( 2 ), an inlet and an outlet valve ( 7 or 8 ) having pump chamber ( 4 ) and a subsequent outlet nozzle (D), and a perforated plate ( 29 ) arranged at a distance in front of the nozzle ( 13 ) and having a larger area than the cross section of the spray jet ( 30 ) emerging from the nozzle ( 13 ) in the region of the perforated plate (29) is characterized in that the perforated plate (29) consists of several, than that which is radially directed spokes (32) on a central hole (31) whose cross section is smaller the impinging spray jet (30) whose inner ends ( 32 ') leave distances (y) between them which are smaller or approximately equal to the diameter of the hole ( 31 ). 16. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the distances (y) of the spokes ( 32 ) increase towards the outside. 17. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that, viewed in the circumferential direction, shorter spokes (32) with longer spokes (32) alternate such that the shorter spokes (32) in greater radia len distance from the center. 18. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the spokes ( 32 ) on their inside of the nozzle ( 13 ) facing the inside form a roof surface (roof slopes a, b), the ridge line (c) of which Nozzle ( 13 ) is turned. 19. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the spokes ( 32 ) towards the inner end ( 32 ') taper to a point (tip 34 ). 20. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the tips ( 34 ) forming ends ( 32 ') of the spokes ( 32 ) run out together in the plane of the outside of the perforated plate ( 29 ). 21. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the perforated plate ( 29 ) continues on the nozzle side to form a pot-shaped housing in a plug-ring wall ( 36 ). 22. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized by a cylindrical plug-in ring wall ( 36 ). 23. Spray pump according to one or more of the preceding claims or in particular characterized by a funnel-shaped plug-in ring wall ( 36 ). 24. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the nozzle-side edge of the plug-in ring wall ( 36 ) has a latching bead ( 37 ) with a clip groove ( 38 ) on the pump housing ( 28 ) or the like works together. 25. Spray pump according to one or more of the preceding claims, or in particular according thereto, characterized in that only part of the inner ends ( 32 ') of the spokes ( 32 ) does not extend to the edge of the hole ( 31 ) in an annular area ( 39 ) ends around the hole ( 31 ) and the hole ( 31 ) is formed by the inner ring rim ( 40 ) of a reticle ( 44 ). 26. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the inner ring rim ( 40 ) and further con-centric ring rings ( 41 to 43 ) like the spokes ( 32 ) through a roof surface (roof slopes a, b) are designed prism-shaped with the nozzle ( 13 ) facing the ridge line (c). 27. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the "surface" of the perforated plate ( 29 ) is aligned with a cone jacket with the spray jet ( 30 ) facing the cone tip ( 46 ). 28. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the conical surface is surrounded by a pot ( 47 ) whose inner wall ( 48 ) tapers in the spray direction of the spray jet ( 30 ). 29. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the pot edge forms air inlet openings ( 49 ) which lie on the level of the mouth of the nozzle ( 13 ). 30. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that perforated plate ( 29 ) and pot ( 47 ) are in one piece. 31. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that perforated plate ( 29 ) and pot ( 47 ) on a visor flap ( 52 ) of the foam spray device (S) are integrally formed. 32. Spray pump according to one or more of the preceding the claims or in particular, characterized net by turning / unlocking the Foam spraying device (S) for the sprayed / foaming liquid. 33. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the rotary locking / release via Drehfu open guide channels ( 69 ) of a mandrel ( 66 ) of the foam spraying device (S) and counter-channels ( 70 ) of a rotatable thereto Retraction ( 71 ) of the device is achieved. 34. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the guide channels ( 69 ) and the Gegenkanä le ( 70 ) are each arranged diametrically and overlap each other in the longitudinal direction of the device. 35. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the counter-channels ( 70 ) connect to an annular channel ( 65 ), the pump chamber side a distribution chamber ( 64 ) is connected upstream. 36. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the foam spray device (S) as clipped to the pump housing ( 28 ) ( 62 , 63 '), an attachment part ( 50 ) carrying outer jacket ( 27 ) is formed, which continues on the pump side as a holding cylinder ( 20 ) for the pump ( 3 ). 37. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the pump piston (6) is clipped to the pump (3) with the holding cylinder (20) (22/23). 38. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the pump piston (6) is clipped on the inside with the holding cylinder (20) (22/23) is, which ent arranged speaking free-floating, in the flow direction from Pump cylinder ( 5 ) can be overflowed. 39. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the outlet valve ( 8 ) between the holding cylinder ( 20 ) and the pump piston ( 6 ) is held axially. 40. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the inlet valve ( 7 ) at the bottom of the pump cylinder ( 5 ) is taken. 41. Spray pump according to one or more of the preceding claims or in particular according thereto characterized by a clip holder between the inlet valve ( 7 ) and an annular wall ( 81 ) of the bottom of the movable pump cylinder ( 5 ). 42. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that in close proximity to the root ( 85 ) of the hand lever ( 2 ) a tongue ( 84 ) as a return spring ( 83 ) via lateral webs ( 90 ) is tied to the inside of the hand lever longitudinal leg. 43. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the material webs ( 90 ) are formed thinner than the thickness of the tongue ( 84 ) there. 44. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the material webs ( 90 ) wedge in the direction of the root ( 85 ) and end at a distance therefrom which is approximately that of the length of the material webs ( 90 ) speaks accordingly. 45. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the outlet valve ( 8 ) of the pump chamber ( 4 ) is the nozzle of the pump ( 3 ). 46. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the outlet valve ( 8 ) has a central, fixed pin ( 94 ) which on its radial peripheral surface is surrounded by an elastically fitting sealing lip ( 95 ) is. 47. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the outlet valve ( 8 ) has a central, fixed pin ( 94 ) on the front end face ( 94 ') of the pin ( 94 ) has an elastically lying sealing lip ( 95 ), leaving a central opening ( 96 ) that is smaller than the pin diameter. 48. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the pin ( 94 ) via integral webs ( 97 ) is connected to the pump piston ( 6 ). 49. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the sealing lip ( 95 ) is part of an essentially cylindrical cap ( 99 ) which tapers conically to form the sealing lip ( 95 ) ( Rejuvenation 100). 50. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the cylindrical cap ( 99 ) in the outer wall of the pump piston ( 6 ) is clipped. 51. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that the cap ( 99 ) has a sealing lip section ( 101 ) extending axially with respect to the axis of the pin ( 94 ). 52. Spray pump according to one or more of the preceding claims or in particular according thereto, characterized in that in the direction of flow behind the nozzle ( 13 ) is a foam spray device (S), the outlet cross section ( 54 ) of the foam spray device (S) to the diameter of the fixed pin ( 94 ) is matched. 53. Spray pump according to one or more of the preceding the claims or in particular according thereto, thereby records that the diameter on the outlet diameter the outlet nozzle (D) is matched.