CN1221321C

CN1221321C - Hand holdable pump spray apparatus

Info

Publication number: CN1221321C
Application number: CNB008178844A
Authority: CN
Inventors: 保罗·M·哈夫洛维茨
Original assignee: OMS Investments Inc
Current assignee: OMS Investments Inc
Priority date: 1999-12-08
Filing date: 2000-12-07
Publication date: 2005-10-05
Anticipated expiration: 2020-12-07
Also published as: MXPA02005658A; EP1254072B1; IL150078A0; HUP0203272A2; PL355996A1; WO2001042129A1; JP4377097B2; CZ20021931A3; EP1254072A4; JP2003516228A; AU2070301A; AU759592B2; NO20022745D0; EP1254072A1; NO20022745L; CA2393687A1; ATE380158T1; AU759592C; NZ519481A; HUP0203272A3

Abstract

A hand holdable pump spray apparatus is disclosed where the pump mechanism is in the hand holdable wand rather than in a spaced apart liquid container. The wand (14) may be held with one handle is extended with other hand. This creates a pressure differential which allows liquid to flow from the container, passed a check valve and into the wand. After filling, a biased spring provides a force against the liquid creating a higher pressure in the wand than ambient pressure. This closes the check valve. When an operator depresses an actuator, another valve opens allowing the liquid in the wand to be ejected through a nozzle.

Description

Hand holdable pump spray apparatus

Technical field

The present invention relates to a kind of hand holdable pump spray apparatus, the hand holdable pump spray apparatus of particularly a kind of reliable, easy use, safety and low price.

Background technology

The holdable pump spray apparatus of no aerosol is developed out, and its main purpose is to use the propellant that environment is had destruction, and needn't use the pressure vessel that may cause safety hazard.Pressure vessel may explode and damage, and when being equipped with such as compositions such as Insecticides (tech) ﹠ Herbicides (tech) and fertilizer in container, may cause harmful effect to environment.The example of no aerosol holdable pump spray apparatus can be referring to U.S. Patent No. 5,938, and 116,5,918,782,5,860,574,5,816,447,5,810,211 and 4,174,055.

The shortcoming of all these no aerosol holdable pump spray apparatus is that pump installation is placed in the container that the liquid that will be sucked is housed.A flexible pipe is connected to hand-held sprayer unit or " cannon spray head " with container.Usually, container is to sell with the form of disposable apparatus, promptly can not have liquid to go out of use after aspirating.This will cause manufacturer will consume relative higher expense per family with using, because the pump machanism that is placed in the container also can go out of use with container.Another problem that pump is placed in the structure in the container is, when the needs operating pumps, owing to need utilize two manual operating pumps, so the hand-held cannon spray head must be put down or remain on the position that inconvenience uses.For example, when the operation sprayer unit, pump must be activated, so that at least a portion of system is pressurizeed.This often means that and upwards to spur a handle that links to each other with piston in the container.Utilizing a hand to do this when action, the another hand must along with oppositely container " downwards " being pinned of the direction that upwards spurs handle.Therefore be difficult to hold simultaneously cannon spray head.

In addition, safety problem need cause special attention, and this is by the character decision of liquid that will be injected.At first,, when transporting out, factory or when being stored, seal of vessel need be lived at container by the user.In addition, also there is safety problem in the pressure fluid that is contained in the stream between container and the sprayer unit.

Therefore, multiple formerly improvement that no aerosol holdable pump spray apparatus is done attempts still can not producing best system.

Summary of the invention

The difficulty that is run in the previous various devices can be solved by the present invention.Described herein is a kind of hand holdable pump spray apparatus, and it comprises: a generally tubular hand-held housing, and it has first and second ends, and separates with the container that is holding liquid that will be injected; A piston, it can move in housing; A handle, it is connecting piston, and is applicable to by the user and catches, piston is shifted to an end of housing; A spring, it is placed in the housing between piston and shell end, piston is pushed to the other end of housing; An inner chamber, it is formed in the housing between piston and housing the other end; First valve, it is placed between container and the inner chamber; A nozzle; Second valve, it is placed between the nozzle and first valve; And a starter, it is used to open second valve, thereby the liquid in the inner chamber can be sprayed by nozzle.

Utilize the present invention, can realize many existing apparatus be beyond one's reach advantage, characteristics and purpose.For example, as an advantage, the invention provides a kind of hand-held does not have the aerosol holdable pump spray apparatus, and it is contained in pump in the cannon spray head, thereby has eliminated the relevant potential safety hazards of pressure fluid of the prior art and in the stream.Another advantage of the present invention is to cancel the different elements that some had before needed employing.Another advantage of the present invention is, the combining structure of pump cannon spray head and container is relatively cheap, and container can discard after using, and the pump machanism in the cannon spray head will separate with container and can reuse.Another characteristics of the present invention are, a kind of simple container valve is provided, and its position visually is clearly, can guarantee like this need not or to be sealed by the user during transportation at container, thereby prevent the liquid accidental release that may work the mischief to environment.Another characteristics of the present invention are, compare with existing holdable pump spray apparatus, can be with container by emptying more up hill and dale.Another purpose that the present invention realizes is that cannon spray head is reliable, easy use, low price and safety.

Preferred embodiment below reading in conjunction with the accompanying drawings can more fully be understood the present invention, thereby realize other advantages, purpose and characteristics.

Description of drawings

Fig. 1 is a kind of front view of hand-held pump spraying system.

Fig. 2 is the amplification front elevation of partly cut-away, and wherein hand-held pump spraying system is in and stores or travel position, and the vessel safety valve can be positioned at the open position shown in closed position shown in the solid line and the dotted line.

Fig. 3 is the cutaway view that the hatching line 3-3 in Fig. 2 is done, but is not with the hand-held cannon spray head.

Fig. 4 is the amplification forward cutaway view of a kind of valve formula cover cap of retrofiting on the container, and wherein valve is positioned at the closed position.

Valve formula cover cap among Fig. 4 has been shown among Fig. 5, and wherein valve is positioned at open position and is communicated with supply pipe.

Fig. 6 is the amplification front elevation of an embodiment of hand holdable pump spray apparatus;

Fig. 7 is the hand holdable pump spray apparatus side view among Fig. 6.

Fig. 8 is the vertical view of the hand holdable pump spray apparatus in Fig. 6 and 7.

Fig. 9 is the cutaway view that the hatching line 9-9 in Fig. 8 is done.

Figure 10 is the amplification view that the circle 10-10 in Fig. 6 is done, and wherein the valve in the device is positioned at the closed position.

Figure 11 is the partial view that is similar to Figure 10, but valve is positioned at open position.

Figure 12 is the cutaway view that the hatching line 12-12 in Figure 10 is done.

Figure 13 is the amplification view that the circle 13-13 in Fig. 8 is done.

Figure 14 is the cutaway view that the hatching line 14-14 in Figure 13 is done, and wherein the handle of hand holdable pump spray apparatus is positioned at and limits the position.

Figure 15 is the view of the handle among Figure 14 when being positioned at free position.

Figure 16 is the front view of a kind of embodiment of remodeling of the present invention, wherein locally schematically shown, and the part of housing is removed, to show internal mechanism.

Figure 17 is the amplification sectional elevation view of the remodeling embodiment among Figure 16.

Figure 18 is the sectional elevation view of the remodeling embodiment among Figure 16, shows the topping up process of portable holdable pump spray apparatus.

Figure 19 be with Figure 16-18 in the similar sectional elevation view of another embodiment of embodiment, required power when wherein utilizing pulley to reduce portable holdable pump spray apparatus topping up.

Figure 20 is the sectional elevation view of the embodiment among Figure 19, and wherein handle is drawn out.

Figure 21 is the front view of another embodiment of holdable pump spray apparatus of the present invention.

Figure 22 is the perspective view of another embodiment of holdable pump spray apparatus of the present invention.

Figure 23 is the perspective view of another embodiment of holdable pump spray apparatus of the present invention, and wherein holdable pump spray apparatus is connected container top.

The specific embodiment

Various modifications or alternative constructions can be admitted among the present invention, but the preferred embodiment shown in the accompanying drawing will be described in detail below.Yet, be appreciated that the present invention is not limited to disclosed particular form.On the contrary, the present invention has covered all and has dropped on interior remodeling, variation, equivalent structure and method and the alternative constructions of expressing in the appended claims book of invention spirit and scope.

Referring to Fig. 1, hand-held does not have aerosol pump spraying system and is constructed to such an extent that comprise a container 10 as flow container substantially, is connecting a supply pipe 12 on the container, and the latter is connecting a hand holdable pump spray apparatus or cannon spray head 14 again.As previously mentioned, pump is placed in the cannon spray head, but not is placed in the container in the patent of enumerating previously formerly, can obtain multiple advantages.By pump is placed in the cannon spray head, the use of pump can be more prone to.When operating pumps, neither need cannon spray head is put down, do not need cannon spray head is remained on the position of inconvenience use yet.The user can hold cannon spray head 14 with one, pulls out the piston of pump with another, as explaining in detail hereinafter.When making This move, do not need to pin container, even do not need to touch container; Different with former device owing to do not have extra masterpiece to be used on the container during pump of the present invention in operation, therefore now not need along with act on pump on the opposite direction of the power that makes progress pin container.Second important feature is that manufacturing cost can reduce.This point realizes because of two factors.At first, pump moves in cannon spray head and can cause designs simplification and reduce number of spare parts, thereby reduces cost.The second, because pump machanism does not have in the container, therefore can produce dog-cheap disposable container.

Another advantage is relevant with the liquid in the container.Owing to do not wish directly to touch liquid in the container 10, even therefore after using, have only under a spot of liquid residue, also hope and also be to deal with usually to container.By pump machanism is placed in the cannon spray head, cannon spray head and supply pipe can be thrown off with container, and are used in again on the new container that is full of fully.Cannon spray head and supply pipe can be pulled down from the end-of-use container easily, and container can utilize one simple but effectively valve seal live.

Referring to Fig. 2 and 3, will describe container in detail below.Container can by any suitable synthetic resin for example high density polyethylene (HDPE) be made into a kind of container that has all-in-one-piece handle 20, outlet 22 and store sleeve or room 24 by blow molding method.The safe cover cap 26 of a special use also is housed on the container.Have a revolving valve 28 on the cover cap.This revolving valve provides a security feature.It makes the user can be simply judge that valve is opened or close by vision.Revolving valve 28 is connected on the top of cover cap 26, and cover cap connects again or is screwed on the container outlet 22.Revolving valve comprises a centre bore 30, and it has constituted the passage that leads to opposite ends 34 from the first end 32 of valve.End 34 can connect supply pipe 12 in any suitable mode.

The valve pivoting is connected on the cover cap.Valve can be that the position of valve 28 and centre bore 30 approximate horizontal turns to that position shown in the dotted line is that valve 28 points to the roughly position of vertical direction among the figure in position shown in the solid line of first end 32 places from Fig. 2.On vertical position, pipe 36 in the centre bore 30 alignment liquids transmission, the latter extends downward the bottom 39 of container 10 or very near the bottom from cover cap 26.By making centre bore 30 aim at interior pipe 36, can between container 10 and cannon spray head 14, form a direct channel of liquid 38.Pipe 36, valve 28 and supply pipe 12 in this passage extends through.Yet, after valve 28 turns to its horizontal level, can see that passage is closed or stops up between interior pipe 36 and supply pipe 12.Can seal up the liquid in the container like this.This revolving valve is safe, and it is relatively cheap, and can provide direct vision authentication information to user or operator, with judge that container is opened or close.

Another advantage is, after being emptied completely except residual liquid and with container, supply pipe 28 can be pulled down from valve 28, thus container, cover cap and interior pipe is discarded aptly.So just be appreciated that the disposable elements in the system is simple and relative low price, and the element of the comparatively complicated costliness pump in the cannon spray head for example can be reused.

Storage/transportation sleeve 24 is used for depositing cannon spray head 14 when system betransported or store.Between sleeve and container, be provided with an inboard cross-over connection flange 40.Flange is provided with a pedestal, when cannon spray head is placed in the sleeve, supply pipe can the block winding pedestal on.Shown in the solid line among Fig. 2, system the time is in the form of relative compact in transportation, yes not subjected to pressure state.Equally, this characteristics also can reduce cost and improve security.

Referring to Figure 4 and 5, there is shown the cover cap that is connected container top and a kind of remodeling of valve.Remodeling cover cap 21 has internal thread 23, is used to mesh container outlet complementary threads (not shown) on every side.Cover cap 21 comprises an integral sleeve 25, the upper end 27 of pipe 36 in being used to hold.A groove 29 is formed on the cover cap top, and pivoting is installed with a valve element 31 in the groove.Valve element 31 is generally tubulars, and comprises a central passage 33, in order to hold the joint 35 that is fixed on supply pipe 12 ends.Joint has a centre bore 45, and can embed in the central passage 33 of valve element 31, as shown in Figure 5.The valve element also comprises an end hole 37, and it is communicated with central passage, so that liquid can flow through vertical total length of valve element.A pore 47 is located in the cover cap, be used in use making pressure reach balance, liquid hole 41 be provided with aim in the end hole 37 of pipe 36 and valve element 31, as shown in Figure 5.

Similar with the embodiment of valve among Fig. 2, valve element 31 is closed on horizontal level shown in Figure 4.At this horizontal level, liquid hole 41 and pore 47 are blocked, with seal of vessel.In addition, because the geometry of groove 29 and joint 35, joint must be pulled down before seal of vessel.This is another security feature because after correct the use, all liq in cannon spray head and the supply pipe all can return in the container, such as hereinafter explanation.

If the operator wishes spraying liquid, then the valve element upwards can be rotated around swivel point 43, again joint is inserted in the central passage, as shown in Figure 5.After the valve element is upright fully, can form a passage clearly, so that the liquid in the container arrives cannon spray head by interior pipe 36, liquid hole 41, end hole 37, central passage 33, joint centre bore 45 and supply pipe 12.

Referring to Fig. 6-9, shown the hand-held sprayer unit among the figure in detail.Cannon spray head 14 comprises a hand-held tubular shell 44, and this housing has first or left end 46 and second or right-hand end 48.A piston 50 can move in housing between first and second ends of housing.Connecting a handle 54 on the piston.Piston rod 52 is connected to piston on the handle.Piston has front surface 58 and rear surface 60.First wind spring 62 is housed between piston rear surface 60 and housing first end portion, and it is used for piston is pushed to the right side the second end 48 of housing.A cover cap 64 is installed on the left end 46 of housing.A nozzle 66 is installed on the right-hand end 48 of housing.Such as hereinafter explanation, also holding two valves, two inner chambers and two springs in the right-hand end of housing.

A right end portion that has the trigger sleeve 68 of thumb manipulation bar 70 around housing.Adjoining nozzle 66 is provided with a liquid gigback 72 and one and is used for the joint 74 that cooperates with supply pipe.Be provided with first or main chamber 80 between the front surface 58 of piston 50 and the right-hand end 48 of housing, when handle 54 is shifted to the left side and promptly left cover cap 64 by the user, will be inhaled in the main chamber from the liquid 38 (Fig. 2) of container.In Fig. 6-9, shown in cannon spray head be in and loosen or not under the pattern of pressure, promptly cannon spray head is pulled down from container so that transportation or store.

Referring to Figure 10-12, pump has relative simplicity and reliability with humidifier as can be seen.Cutaway view among Figure 10 and 11 shows the right-hand end 48 of housing 44.Supply pipe 12 is connected on the joint 74, and joint then is communicated with second or loculus 82.First or inlet valve 84 loculus 82 and main chamber 80 are separated, this inlet valve is generally useed check valve as, it can be opened in a direction based on the pressure reduction of valve both sides usually.When piston 50 (Fig. 9) is pulled to the left side by the user, main chamber 80 will be expanded.This will cause the pressure in the main chamber to reduce, and atmospheric pressure will act on the liquid simultaneously, therefore will produce pressure reduction in check valve 84 both sides.This pressure reduction will cause one-way valve opens, and as utilizing dotted line with shown in the exaggerative mode among the figure, and liquid 38 will begin to flow into the main chamber 80 by supply pipe and loculus 82 from container 10.In addition, along with piston 50 is pulled to the left side, wind spring 62 (Fig. 9) is compressed reposefully.After piston arrives extreme limit of travel or user stop to spur handle left, be full of liquid in the main chamber 80, and spring 62 is compressed wholly or in part.Spring after the compression will be on the rear surface 60 of piston and liquid applied thrust, thereby close check valve 84.

Be provided with second valve on the position that is arranged in parallel with check valve, it comprises a housing right-hand end place and is placed in valve rod 88 in the housing.Valve rod has a central longitudinal to hole 90, first or left radial path 92 and be adjacent to second or right radial path 94 of valve rod leading edge 93.A connector 96 seals up the upstream extremity in vertical hole 90.Also comprise first O-ring seals of settling around the valve rod periphery 98 in second valve.Sealing ring is as a valve face.In addition, second valve also comprises the 2nd O shape circle the 100, the 3rd O shape circle the 102 and the 4th O shape circle 104, to seal up the various piece of valve.Also be provided with male thread portion 106 on the periphery of valve rod, in order to the internal thread 108 on the engagement nozzle 66.The screw-threaded engagement of valve rod between nozzle can guarantee after external force applies that they are mobile or slide that valve rod and nozzle can move relative to each other again simultaneously, to regulate the liquid stream that penetrates from nozzle.Nozzle 66 comprises a round end 110 that has spout 112.The 3rd or nozzle chambers 114 between nozzle and valve rod, be located at nozzle center.Nozzle also comprises an annular shoulder 116, a ring edge 118 and an outside shoulder 119.

The right-hand end 48 of housing comprises first sleeve part 120, and it has an annular flange 122 and the part as second valve that is formed on its periphery is the annular inclined-plane 124 of valve seat.Between flange 122 and ring edge 118, be provided with second wind spring 126.

Trigger sleeve 68 is settled around the part of nozzle and sleeve part 120, has one on the trigger sleeve towards radially annular flange 130.This flange is configured to abut against the shoulder 119 of nozzle.On the action bars shown in Fig. 6 and 7 70 and when making the trigger sleeve shift to the left side, can cause nozzle to slide to the left side in user's thumb action, thus make O-ring seals or valve face 98 from the annular inclined-plane or valve seat 124 remove, as shown in figure 11.After this action takes place, to flow through around the end of valve rod 88 with the liquid of arrow 132 expression, flow through valve face 98 and valve seat 124, around valve rod 88 annular space 91 of flowing through, the radial passage 92 of flowing through, flow into again in vertical hole 90, in radial passage 94 flow nozzle chambeies 114, ejection from spout 112 at last.After user's thumb leaves thumb manipulation bar 70, the ring edge 118 that second spring 126 will promote nozzle moves right, the two also slides to the right thereby cause nozzle and valve rod, this will finally cause on valve face 98 and valve seat 124 abut against each other, thereby block to live liquid flowing in nozzle chambers 114.

Referring to Figure 12, valve rod 88 comprises a cannelure 121, in order to the key 123 that holds a longitudinal extension.This mechanism makes that the user can be with respect to the valve rod rotary nozzle, and making valve rod keep static does not simultaneously change.Much less, valve rod can be based on the rotation of nozzle and is along the longitudinal movement.

Referring to Figure 13-15, there is shown another embodiment of exquisite simple mechanism of the present invention.The left end 46 of housing 44 is shown in detail.Cover cap 64 housing by screw-threaded engagement, and comprises an outer surface 138 and a centre bore 139.Centre bore 139 makes piston rod 52 can pass shell end.Cover cap comprises a curved flanges 140 that extends through acute angle.An arc radial flange 142 forms one with piston rod.When piston 50 was positioned at roughly as shown in Figure 9 right-most position, piston rod flange and the residing position of cover cap flange made piston rod flange to be captured by cover cap and cover cap flange.Cover cap can also comprise a flange-shape opening 143.Because piston rod is columniform, so it can turn to shown in Figure 15 freeing or free position from the position of capturing or limit shown in Figure 13 and 14.On trap sites, pump can not be operated and pressurized not.This means that first spring 62 is in lax or basic lax state.Limit the position at this, piston rod flange and opening 143 are aligned with each other, and piston rod flange slips in the opening, and be limited to rotate and outwards straight line move.Yet, by handle 54 being pulled to the left side, simply handle is rotated promptly 180 ° of half-turns again, piston rod flange will move to free position, spur left and user or operator can catch handle and resisting the power of compressing spring, so that cannon spray head is pressurizeed.

Return Figure 10, as previously mentioned, liquid gigback 72 is set to a security feature, thereby when liquid is not sprayed by nozzle the liquid in main chamber 80 and the loculus 82 is returned in the container.This point realizes by forcing check valve 84 to be opened.The liquid gigback comprises a plunger 141, a start button 145 and the 3rd spring 144.Plunger 140 can operation in second sleeve 146 of a weak point of housing 44, and this second sleeve is located in the housing right end portion 48.After button 145 is pressed, it will slide on the periphery 148 of second sleeve 146 to the left.Consequently, an interior circular annular flange 150 on the button will be fitted on the annular circular bead surface 152 of plunger, thereby cause plunger to promote check valve 84.Can force one-way valve opens like this,, and from then on flow in the supply pipe 12 so that the liquid in the main chamber 80 enters in the loculus 82.Liquid will flow back to container 10 from supply pipe 12.The driving force that drives liquid flow is to be provided by the thrust that first spring 62 (Fig. 9) is applied on the rear surface 60 of piston 50.

Referring to Figure 16,17 and 18, there is shown an alternative embodiment of the invention.Shown hand holdable pump spray apparatus 200 comprises an outer cover 202, there is shown half of outer cover, is wherein settling one to have first or downside end 206 and second or the cylindrical shell 204 of upper side end 208.A piston mobile 210 is housed in the housing, and it can move between first and second ends of housing.Handle 214 is connecting piston by piston rod 214.Wind spring 216 is enclosed within on the piston rod and thrust is provided, in order to piston is pushed to the upper side end 208 of housing.

Can be clear that from Figure 18 when handle was drawn out, wind spring 216 was compressed, be applied to thrust on the piston with increase.Handle pulled out the inner chamber that is formed between upper side end 208 and the piston 210 220 is increased.When piston moves to downside end 206, be full of fluid or liquid that will be injected in this inner chamber.

First or inlet valve 222 be placed in the end of a suction lead 224, connecting flow container 226 with this conduit shown in the mode of signal in the drawings.Be appreciated that flow container can adopt the form of fluid preservation container, for example the container shown in Fig. 1 and 2 10.Similar with the hand-held pump sprayer embodiment of front, the device in the present embodiment will be separated with container shown in Fig. 1 and 16 or flow container.Inlet valve is made of a lax spheroid 230, and this spheroid rests on the valve seat 232 usually, and is subjected to the constraint of a valve cap 234.After handle is drawn out, will produce inner chamber 220, and the pressure in the inner chamber is lower than the pressure of the liquid in the flow container 226.Under the effect of this pressure reduction, the liquid conduit 224 of will flowing through is to lift spheroid from valve seat 232.Liquid will flow through valve cap 234 and enter second inner chamber or manifold 240 in.Liquid enters in the inner chamber 220 from here.In this way, hand holdable pump spray apparatus is ready to so that operate.

Finally, liquid will spray from nozzle 242.Yet, between inner chamber 220 and manifold 240, be provided with second or dump valve 244.This valve comprises slidably valve element 246, a wind spring 248 and an opening 250 that is arranged in the conduit 252 that leads to nozzle.A starter 254 is connected on the outer cover 202.Starter comprises an operating knob 255, a pivot 256 and an adjutage 258.Adjutage is connecting slidably valve element 246, thereby when operating knob 255 is depressed, makes operating knob and adjutage rotate in the counterclockwise direction, thereby causes valve element 246 to slide to the left and compress spring 248.After sliding into the left side, the valve element can be exposed to opening 250 liquid in inner chamber and the manifold.After the operating physical force on the operating knob 255 discharged, wind spring 248 will promote adjutage and operating knob rotates along clockwise direction, thereby made valve element 246 return as shown in figure 17 home position.Be appreciated that now hand holdable pump spray apparatus 200 is simple, reliable and low price, the while uses easily again and can efficient operation.

Referring to Figure 19 and 20, there is shown the hand holdable pump spray apparatus 280 in another embodiment hand, it comprises an outer cover 282, cylindrical shell 284, an internal piston 286 and a handle 288.Similar with the embodiment of front, housing has first end 290 and the second end 292.The structure of present embodiment is very similar to the embodiment shown in Figure 16-18, has just removed to be used for piston is connected to piston rod on the handle, replaces cable 294.One end 295 of cable is connected on the lower end 296 of cylindrical shell, and the end opposite 297 of cable is connected on the holdfast 298 in the handle.A pulley is installed on the piston between these two end points of cable.Spur handle so that piston is shifted to first end the operator, will produce a low pressure lumen 302, and pushing spring 287 is compressed.An advantage of cable and pulley structure is that the embodiment shown in same Figure 16-18 compares, and only needs to apply on handle 288 power of half for mobile piston.

Similar with the embodiment shown in Figure 16-18, the embodiment shown in Figure 19 and 20 comprises an input pipe or manages 303, first valve 304, second valve 306 and a nozzle 308.In addition, Figure 19 and the embodiment shown in 20 be by one with handle with reference to the described identical starter 310 of Figure 16-18.

Referring to Figure 21, another embodiment of cannon spray head is described below.This hand-held pump sprayer 160 is configured to have a pistol grip 162 and a trigger 164.A supply pipe 166 is engaged on the handle bottom.The remainder that handle 168 is designed to be visually with cannon spray head forms one, to provide device more attractive in appearance.Referring to Figure 22, there is shown another embodiment of cannon spray head.Illustrated cannon spray head 180 is similar to the cannon spray head embodiment among Figure 16, and just the modified structure among Figure 22 has a pistol grip 182.Another embodiment has been shown among Figure 23, and it is similar to the embodiment among Fig. 1, and just cannon spray head 190 directly is connected on the liquid container 192.Cannon spray head among all embodiment all can by suitable material for example polypropylene make.

When the embodiment shown in Fig. 1-15 operated, the user at first will take out cannon spray head 14 from sleeve 24, and supply pipe is taken off from cross-over connection flange 40.Afterwards, the user lifts the end 34 of valve 28, opens with the valve that will seal container.In alternate configurations, the user will lift valve element 31, opening valve (seeing Fig. 4,5), and joint 35 be inserted.Any above-mentioned action all can be communicated with valve with interior pipe 36, thereby connects the liquid 38 in the container 10.

For system is pressurizeed, the user is held in sprayer unit housing 44 in the hand, and pull out in left side with the another hand that handle is outside or in Fig. 6,7 and 9.Like this, liquid is drawn in the main chamber 80, and meanwhile, wind spring 62 is compressed.After in main chamber 80, having charged into liquid, for example at wind spring by after the compression fully, user or operator be release handle 54, and his/her is held on trigger sleeve 68, and his/her thumb is placed on the thumb manipulation bar 70.When wishing start-up system, the user pulls back trigger sleeve 68, so that nozzle/valve rod combining structure slides to the left, and causes valve face 98 to lift off a seat 124.When carrying out This move, liquid flows around valve rod in annular space 91, the radial passage 92 of flowing through again, and flow out from radial passage 94 in vertical hole 90 of flowing through, and enters at last in the nozzle chambers 114.Liquid will be from here by spout 112 ejections.By with respect to the valve rod rotary nozzle,, can regulate the injection of nozzle to change the position of valve rod leading edge 93 with respect to spout 112.Promote to the right in the process of piston 50 at wind spring 62, liquid will spray from spout 112 always, and therefore cause main chamber 80 to dwindle.After wind spring 62 arrives its slack position, if perhaps piston is prevented from, for example stoped by piston rod flange, then piston is no longer exerted pressure to liquid, and the user must shift to handle 54 left side again, compressing spring 62 once more, and expansion and filling master chamber 80, could exert pressure to liquid again like this.Above-mentioned action can be carried out repeatedly, extracts out from container 10 until most liquid 38.This moment or before this, valve 28 or valve element 31 can turn to horizontal level, to seal up container.Supply pipe 12 and cannon spray head can be pulled down, and container and residual liquid can go out of use.Afterwards, supply pipe can be connected on the new container that is full of fully, thereby reuse supply pipe and cannon spray head.

Before spring 62 arrives its slack position, finish spray operation if desired, can press the button 145 of liquid gigback.This will cause plunger 141 to open check valve 84, so that in the inflow of the liquid in the main chamber 80 loculus 82, and from then on flow in the supply pipe 12, thereby turn back in the container.In this way, cannon spray head is depressurized, and the liquid in cannon spray head and the supply pipe is stored in the container again.In case liquid turns back in the container, the revolving valve parts will be rotated horizontal level, to seal up container.In addition, supply pipe can be wrapped on the bridge joint flange, and cannon spray head is inserted in the storage sleeve 24.

When the embodiment shown in Figure 16-23 operates,,, hand holdable pump spray apparatus can be loaded so that the piston in the cylindrical shell is shifted to first end from the second end by draw-out handle.Can produce a low pressure lumen like this, and cause the liquid in flow container or the container to suck in the manifold, flow in the low pressure lumen that forms again by suction line.After inner chamber is by topping up because on the pushing spring pushing piston, piston can press against will be injected liquid on, therefore can produce reverse pressure reduction, thereby cause suction valve closure.Liquid that will be injected is contained between inlet valve and the dump valve now.Behind user's push button, dump valve is opened, and the liquid in manifold and the inner chamber will be discharged from the hand-held sprayer unit, discharge until operating knob.After This move took place, dump valve cut out, and no longer included the liquid ejection.The operation of operating knob will cause holdable pump spray apparatus to spray out liquid, be drained until manifold and inner chamber, and user's this moment draw-out handle once more will be will install topping up again.

Describe some embodiments of the present invention in this specification in detail.Under the spirit of the theory of identity, other remodeling and variation are also contained in the scope in the appended claims book.For example, different actuating mechanisms, valve gear and nozzle can be thought equivalent structure, and the shape different attractive in appearance of housing also is like this.In addition, different handle, piston rod, pulley, circular cylindrical shell and pistons also are equivalent structures.Other alternate configurations and many new technologies also are equal to.Therefore, do not wish to limit by any way the application of the theory of identity here.

Claims

1. hand holdable pump spray apparatus, it comprises the combination of following elements:

The hand-held housing of a generally tubular, it has first and second ends;

A piston, it has two surfaces and can move in above-mentioned housing;

A handle, it is connecting above-mentioned piston, and is placed in above-mentioned hull outside, and it is suitable for being caught by the user, above-mentioned piston is shifted to the above-mentioned first end of above-mentioned housing;

First spring, it is placed in the above-mentioned housing between the above-mentioned first end of surface of above-mentioned piston and above-mentioned housing, above-mentioned piston is pushed to the above-mentioned the second end of above-mentioned housing;

First inner chamber, it is formed in the above-mentioned housing between another surface of above-mentioned piston and the above-mentioned the second end of above-mentioned housing;

Second inner chamber, it is formed in the above-mentioned housing, and is connecting a flow container that is holding liquid that will be injected;

First valve, it separates above-mentioned second inner chamber and above-mentioned first inner chamber;

Second valve, it is installed in the above-mentioned housing, and the above-mentioned the second end of above-mentioned first inner chamber and above-mentioned housing is separated;

A nozzle, it is connecting the above-mentioned the second end of above-mentioned housing;

Second spring, it is arranged in above-mentioned housing and adjoins said nozzle and install, to cooperate and the pushing said nozzle; And

A manual trigger, it is arranged in above-mentioned housing and is connecting said nozzle, with mobile said nozzle and above-mentioned second valve, thereby the liquid in above-mentioned first inner chamber can be sprayed by said nozzle.

2. device as claimed in claim 1 is characterized in that:

Above-mentioned second valve comprises a valve rod that is connecting said nozzle;

Above-mentioned trigger can be shifted to said nozzle and above-mentioned valve rod the above-mentioned first end of above-mentioned housing, with above-mentioned second spring compression, drives the power that above-mentioned valve rod and said nozzle return the closed position thereby provide, and liquid can be sprayed like this; And

Above-mentioned housing comprises first sleeve part, and above-mentioned valve rod is installed in it.

3. device as claimed in claim 2 is characterized in that:

Above-mentioned housing comprises second sleeve part, in order to a plunger that is used to open above-mentioned first valve to be installed.

4. device as claimed in claim 3 also comprises:

A plunger, it is installed in above-mentioned second sleeve part, in order to cooperate and to open above-mentioned first valve, so that the liquid in above-mentioned first inner chamber flows in above-mentioned second inner chamber and returns in the above-mentioned flow container.

5. device as claimed in claim 1 is characterized in that:

Above-mentioned trigger comprises a trigger sleeve, and it is the generally tubular element that is installed on the above-mentioned housing.

6. device as claimed in claim 1 also comprises:

An end cap, it is connecting the above-mentioned first end of above-mentioned housing, and above-mentioned end cap has a flange; And

Above-mentioned handle comprises a flange, and it is used for cooperating with the above-mentioned flange of above-mentioned end cap, to limit above-mentioned handle, makes it to move above-mentioned piston.

7. device as claimed in claim 2 is characterized in that:

Above-mentioned valve rod has a central longitudinal to the hole, its connection and be communicated with a hole in the said nozzle.

8. device as claimed in claim 1 also comprises:

The 3rd inner chamber, it is placed between above-mentioned second valve and the said nozzle; And

Above-mentioned handle extends to outside the above-mentioned first end of above-mentioned housing;

Above-mentioned second inner chamber is formed in the above-mentioned the second end of above-mentioned housing;

Above-mentioned first valve is placed in the above-mentioned the second end of above-mentioned housing.

9. device as claimed in claim 4 also comprises:

The 3rd spring, it presses against on the above-mentioned plunger, with make it to throw off with above-mentioned first valve between cooperate.

10. device as claimed in claim 4 also comprises:

11. device as claimed in claim 1 is characterized in that: above-mentioned flow container comprises a container that is holding liquid that will be injected.

12. device as claimed in claim 11 also comprises:

A supply pipe, it is connected to above-mentioned hand holdable pump spray apparatus with said vesse; And

One stores sleeve, and it is connected on the said vesse, is used to preserve above-mentioned hand holdable pump spray apparatus.

13. device as claimed in claim 12 is characterized in that:

Above-mentioned second valve comprises a valve rod that is engaged on the said nozzle;

After above-mentioned trigger was activated, above-mentioned trigger can be shifted to said nozzle and above-mentioned valve rod the above-mentioned first end of above-mentioned housing, with above-mentioned second spring compression, thereby provided a power to above-mentioned valve rod and said nozzle; And

14. device as claimed in claim 13 is characterized in that:

Above-mentioned housing comprises second sleeve part; And

A safety valve is connecting said vesse and above-mentioned supply pipe.

15. device as claimed in claim 14 also comprises:

A plunger, it is installed in above-mentioned second sleeve part, in order to cooperate and to open above-mentioned first valve, so that the liquid in above-mentioned first inner chamber flows in above-mentioned second inner chamber and returns in the said vesse.

16. device as claimed in claim 15 also comprises:

17. device as claimed in claim 16 also comprises:

Above-mentioned handle comprises a flange, and it is used for cooperating with the above-mentioned flange of above-mentioned end cap, to limit above-mentioned handle.

18. device as claimed in claim 11 also comprises:

The 3rd spring, it presses against on the plunger in second sleeve part that is loaded on housing, with make it to throw off with above-mentioned first valve between cooperate.

19. a hand-held pump spraying system, it comprises the combination of following elements:

A container, its holding will be injected liquid;

A supply pipe, it can be connected on the said vesse removably; And

A hand holdable pump spray apparatus, it comprises a housing with first and second ends, first sleeve and second sleeve, and is connecting above-mentioned supply pipe;

A piston, it can move in above-mentioned housing;

First inner chamber, it is formed in the housing between above-mentioned piston and above-mentioned the second end;

Second inner chamber, it is formed in above-mentioned second sleeve;

A nozzle, it is connecting above-mentioned housing;

First valve, it is placed in the above-mentioned housing, and above-mentioned first inner chamber and above-mentioned second inner chamber are separated;

Second valve, it is placed in above-mentioned first sleeve of above-mentioned housing, and above-mentioned first inner chamber and said nozzle are separated;

Second spring, it is arranged in above-mentioned housing and adjoins said nozzle and install, to cooperate and the pushing said nozzle;

A hole that is arranged in above-mentioned housing, it is used to receive above-mentioned supply pipe, and above-mentioned supply pipe is communicated with above-mentioned second inner chamber;

A handle, it is connecting above-mentioned piston, so that above-mentioned piston is moved with respect to above-mentioned housing;

A plunger, it can cooperate with above-mentioned first valve; And

A trigger, it is used to open above-mentioned second valve.

20. system as claimed in claim 19 also comprises:

First spring, it is placed in the above-mentioned housing, above-mentioned piston is pushed to the above-mentioned the second end of above-mentioned housing;

Second spring, it contacts above-mentioned second valve, to push above-mentioned second valve to closed position; And

The 3rd spring, it pushes away above-mentioned first valve with above-mentioned plunger.

21. system as claimed in claim 20 is characterized in that:

Above-mentioned second ring spring is installed around above-mentioned first sleeve;

Above-mentioned handle comprises a flange; And

Another flange is connected on the above-mentioned housing, is used to cooperate above-mentioned handle flange.

22. system as claimed in claim 21 is characterized in that:

Above-mentioned second valve comprises a valve rod;

And system also comprises O shape circle, and it is installed around above-mentioned valve rod; And

One first sleeve part of above-mentioned first valve is a valve seat as the part of second valve.

23. a hand holdable pump spray apparatus, it comprises the combination of following elements:

A housing, it has first and second ends, and above-mentioned housing and a flow container that is holding liquid that will be injected are separated by;

A piston, it can move in above-mentioned housing between above-mentioned first and second ends;

A handle, it is connecting above-mentioned piston, and is suitable for the operation by the user of above-mentioned hand holdable pump spray apparatus, above-mentioned piston is shifted to the above-mentioned first end of above-mentioned housing;

First spring, it is connecting above-mentioned piston, above-mentioned piston is pushed to the above-mentioned the second end of above-mentioned housing;

An inner chamber, it is formed in the above-mentioned housing when above-mentioned piston is shifted to above-mentioned first end, and above-mentioned inner chamber is being communicated with the flow container that is holding liquid that will be injected outside being isolated in;

First valve, it is placed between the inner chamber of above-mentioned flow container and above-mentioned formation, and when above-mentioned handle is shifted to the above-mentioned first end of above-mentioned housing by manipulation and with above-mentioned piston, above-mentioned first valve will be opened;

A nozzle, it is connecting above-mentioned housing, and is placed to such an extent that be used for receiving liquid from the inner chamber of above-mentioned formation;

Second valve, its inner chamber and said nozzle with above-mentioned formation is separated; And

A starter, it is connecting above-mentioned second valve, in order to open above-mentioned second valve, so that liquid flows to said nozzle from above-mentioned inner chamber.

24. device as claimed in claim 23 also comprises:

An outer cover, it surrounds above-mentioned housing, above-mentioned piston, above-mentioned first spring, above-mentioned first valve and above-mentioned second valve.

25. device as claimed in claim 23 is characterized in that:

Above-mentioned second valve comprises a displaceable element, hole and second spring, and above-mentioned second spring is used to push above-mentioned displaceable element, to close above-mentioned hole.

26. device as claimed in claim 23 also comprises:

Second inner chamber, it is placed between above-mentioned first and second valves.

27. device as claimed in claim 24 also comprises:

A supply pipe, it is placed in the above-mentioned outer cover, and is connecting above-mentioned first valve.

28. device as claimed in claim 23 is characterized in that:

Above-mentioned starter comprises an operating knob, a pivot and an arm that is used to cooperate above-mentioned second valve that is connecting the aforesaid operations button.

29. device as claimed in claim 28 is characterized in that:

Above-mentioned second valve comprises a displaceable element, hole and second spring, and above-mentioned second spring is used to push above-mentioned displaceable element, to close above-mentioned hole; And

The above-mentioned arm of above-mentioned starter is cooperating the above-mentioned displaceable element of above-mentioned second valve, moves above-mentioned displaceable element to resist above-mentioned second spring.

30. device as claimed in claim 29 also comprises:

31. device as claimed in claim 30 also comprises:

32. device as claimed in claim 31 also comprises: