CN1010209B - The device to distribute material from the self-sealed distributor - Google Patents

Abstract

The present invention relates to a vacuum pump distributor with an initial chamber and a pump work chamber. A pumping chamber is provided with a vacuum pump with a flexible circular arch and a nozzle with an opening, wherein the flexible circular arch is movable and is used for reducing the volume of the pumping chamber and distributing materials in the pumping chamber; the nozzle is extended out of the pumping cavity, and materials are distributed through the opening of the nozzle. The distributor is sealed by itself, for the nozzle is sealed by a closing member with a sealing top end. When the pumping chamber is in a non-operation position, the closing member is pushed to the top end to close the position of the opening in the nozzle. The closing member is in response to the action of the flexible circular arch, the top end is moved from a closing position, and materials are allowed to be distributed.

Description

The device to distribute material from the self-sealed distributor

The present invention relates generally to container, or rather, relate to material from sealing the pump dispenser that spout extrudes voluntarily with the self closing cutoff port.

The pump dispenser of different types, in particular for the pump dispenser that the consistence material is used, early existing development.Vacuum pump utilizes the stroke of a mechanism, and this mechanism raises the material pressure in the pumping chamber, and material is extruded container.The return of stroke of mechanism causes parital vacuum in the pumping chamber in the space that originally has the distribution material to occupy, and is able to material is sucked the pumping chamber from initial cavity.Initial cavity can be the chamber of a band air extractor vent, links to each other with the pumping chamber by induction pipe.It also can be a variable-displacement chamber that does not have air extractor vent.In a kind of such variable capacity device, second mechanism (normally piston) is subjected to atmospheric effect, and the capacity of initial cavity is dwindled.Perhaps, use the contractile pocket of a flexibility that capacity is dwindled, pocket equally also is subjected to atmospheric effect.

The present invention directly applies to a kind of improved vacuum pump distributing box of can automatic seal after distributing controlled dosage living spout.

At the NO.4 of promulgation on July 3rd, 1984, in 457,454 US Patent, the inventor discloses a kind of two-chamber distributing box.In this two-chamber distributing box, liquid material is from a contractile initial cavity, through second chamber of valve control passage input pumping.Material is sent by discharging nozzle (spout) therefrom.The alternately pressurization and the release of the resilient movement part of pumping chamber wall produce pump action.

There is two problems (for example the previous NO.4 of the inventor, the two-chamber distributing box in 457,454 US Patent)-control dosage in the vacuum pump distributing box and prevents to pollute.The first, be the material (control dosage) of output scheduled volume, the minimizing of pump work chamber capacity should accurately be measured.The second, discharge side (or material discharge through this spout) should seal up after each the use, is exposed in the atmosphere to prevent material, thereby prevents the pollution of leftover materials and reduce the possibility that the material caking stops up spout.When containing perishable foodstuff in the container of pump, prevent to pollute even more important.

The inventor's NO.4,457,454 US Patent have provided several selectable mechanism that spout seal is used.It is the lid of a trough of belt that an embodiment is arranged, and turns with hand, and when the groove on the aligning of the groove on the lid nozzle, nozzle is opened; During dislocation, nozzle is closed.Another embodiment is equipped with slip cover in the nozzle.The pressure that acts on material in the distributing box forces lid outwards to slide, and exposes the spout near the lid end.Yet, also need people's application force, promote lid spout seal.For most purposes, for example be used for hand cleanser and toothpaste, in this case, spout does not need to close after each the use, and this class sealing is gratifying.But when for example being used for some occasions such as perishable foodstuff, after each the use, must close spout, therefore to open voluntarily with the improvement of leak free spout voluntarily be exactly in demand.

Prior art has provided the mechanism of several sealing spouts.The most basic prior art uses a mobilizable lid to seal discharge side.Certainly, this is not a kind of spout of leak free voluntarily, because the user must move lid after each the use.Lid is lost or is also caused additional inconvenience when misplacing the position.

At the NO.3 of on November 28th, 1961 promulgation, in 010,613 US Patent, Stoessel provides a kind of spout that seals voluntarily, on two plastics labial laminas that overlapping are arranged, when material when distributing box extrudes, labial lamina is outwards opened; When the pressure that acts on material in the distributing box disappeared, labial lamina was closed, to prevent air admission.The NO.3 of promulgation on 1965 month December 14,223,289 US Patent have provided a kind of contractile pocket that utilizes labial lamina overlap joint principle.

At the NO.3 of promulgation on May 7th, 1963, in 088,636 US Patent, Si Pazi provides a kind of distributing box, has the spout of sealing voluntarily of two kinds of different embodiment.First embodiment utilizes NO.3, and disclosed principle in 010,613 patent is equipped with the labial lamina of two overlap joints on the spout.Second embodiment provides a kind of spout that is biased to the external valve head of spout with a spring that is equipped with.Act on the rising of distributing box fluid pressure, cause valve head outwards to move, so that fluid can overflow, when pressure disappeared, spring back into sealing station to valve head again.

At the NO.3 of promulgation on August 23rd, 1966, in 268,123 US Patent, Si Pazi provides the distributing box that the another kind band that uses the internal valves head seals spout voluntarily.The mechanism that can make the pressure rising that acts on the material removes valve head inwards from the distributing box spout, provides the gap, and material is discharged from distributing box through this.When the release of this mechanism, the spring handle valve part seals up spout toward extrapolation.

The present invention realizes the sealing voluntarily of spout with sealing member, and some packs into sealing member in the spout with bearing fit, and when distributing box was in off position, it can be shifted, and seals spout.Link with sealing member effectively for distributing material to produce a pressure differential opener, so that open spout in a minute timing.

In one embodiment, sealing member is a rod member that stretches into spout, and it has the head of a salable spout, and the head back is one section groove that distributes material, and its length is greater than the width of spout.Preferably rod member has the convex shoulder of its amount of feeding of may command, so that groove connects spout when distributing material.Rod member also has the extension of a flexibility, and linkage is connected with opener.

Sealing member can also have another rod member, and the one end has a top, in order to expose the inner sealing in the container.

In these embodiments, do not divide the timing canned pump to send the measure of passage between chamber and the initial cavity.Yet, particularly lower material to viscosity, even if above-mentioned sealing dispensable also be useful.Therefore at another kind voluntarily in the leak free scheme, sealing mechanism also plays the valve between chamber voluntarily.

In such embodiment, spout installs on the pumping mechanism, and action thereupon, and mobile between passage that sealing member links to each other with initial cavity in the pumping chamber and the spout.This sealing member comprises the rod member of a bending, and the head of one end is used to seal spout in spout, then is a flat part and spring section; And the head of the other end plays the valve between initial cavity and the pumping chamber.

In such another embodiment, spout is to be fixed on the pump housing basically, and sealing member has two parts.First is an end band stretches into the top of spout with horizontal direction a rod member.Second portion is a step-like plunger, link with pump machanism, and with vertical direction by rod member, it can make member bending, extracts the top out opening spout, and can be used as valve and block passage between initial cavity and the pumping chamber.

At last, in such additional embodiment, sealing member also has two parts.First has a sealing to be contained in outer head and the rod member that passes spout of the spout on the pump housing.Second portion is a flexible piece, and it and rod member the inner link, and mobile rod member is closed spout.The pressure that acts on material in the container makes head displacement (with making the flexible piece bending), to open spout.In case when pressure shed, this flexible piece restored to the original state again, head is resetted close spout.

Fig. 1 is according to principle design of the present invention, the section-drawing of first embodiment of the distributing box of a plunger shaft of use.

Fig. 2 is the view in the front of presentation graphs 1 pumping top of chamber.

Fig. 3 is a section-drawing of getting 3-3 line among Fig. 2, the top in pumping chamber when illustrating disassembled state.

Fig. 4 is a section-drawing of getting 4-4 line among Fig. 2, the top in pumping chamber during the expression disassembled state.

Fig. 5 is according to principle design of the present invention, the section-drawing of second embodiment of the two-chamber distributing box of a plunger shaft of use.

Fig. 6 is to use a section-drawing with the 3rd embodiment of the two-chamber distributing box of collapsible pocket.

Fig. 7 is the exploded drawings of sealing member among Fig. 6.

Fig. 8 is to use the section-drawing of the 4th embodiment of the two-chamber distributing box of a band plunger shaft.

Fig. 9 is the section-drawing of the 5th embodiment of vacuum pump distributing box, and the jar of a band air extractor vent forms initial cavity in the distributing box.

Figure 10 is the section-drawing of the 6th embodiment of vacuum pump distributing box, and a piston chamber forms initial cavity in the distributing box.

Fig. 1 illustrates the first embodiment of the present invention, wherein uses a vacuum pump distributing box, and it has the piston mobile that is used to reduce material initial cavity capacity.The rigid cylindrical container (11) of determining initial cavity (12) has an open end (13) (bottom) and with the other end (14) (top) of a reduced diameter section (15).A hemispheric substantially flexible cap (17) is contained in the top of container.For example, cap (17) is enclosed within the reduced diameter section (15) at cylinder (11) top by bonding or the method that compresses.

Cap (17) has a semisphere circular arch (18), and radially-protruding spout (19) that is positioned at a side and one extend the flexible seals (21) that gets off from the circular arch inner top.In illustrated embodiment, spout (19) is arranged near the lower edge of circular arch (18), and four walls (23) (see figure 2) is arranged.See too clearly in Fig. 3, part (21) is a rods, it have an end (24) be fixed on circular arch (18) the inside in the heart; And then another free end band top (25) of bar has one section sideband groove (27) (see figure 4) at bar, at another sideband convex shoulder (29).Groove (27) is longer than the degree of depth of nozzle wall (23).Convex shoulder (29) is just run into nozzle wall (23).Entire cap (17), just circular arch (18), spout (19) and rod member (21) are formed by the same a kind of elastomeric material integral body such as plastics.Install to container (11) before at cap (17), spout (19) (see figure 1) will be inserted in the top (25) of bar (21), so that top (25) is contacted with spout wall (23), spout (19) is closed.

Container among the embodiment is charged, need its inversion.After by opening (13) material being filled, piston (31) inserts in the container bottom opening (13), to eliminate the air gap in the container (11).This utilizes air extractor vent (33) that trapped air is discharged and realized when piston (31) inserts.

In order to improve the efficient of pump, piston (31) is designed to be difficult to down move.Any known in this available prior art method reaches, for example radially pin, flexible lips, or by a pole and follower.The shape of piston (31) distributes material from container (11) amount reaches maxim.In the present embodiment, piston (31) has the pressure head (35) that arches upward, and its diameter is less, so that allocate the reduced diameter section (15) in the container (11) into.

The embodiment of Fig. 1 to 4 operates as follows.When pressing circular arch (18), bar (21) advances by spout (19), runs into the inboard edge of spout (19) until the convex shoulder (29) of bar.Top (25) is released spout (19) to the material of any caking.In this open position, groove (27) provides a cutoff port that connects spout (19).Material is discharged from the cutoff port of spout (19) because circular arch is depressed, and capacity dwindles and the power that is squeezed.

When cap (17) when unclamping, circular arch (18) reinstatement, part (21) is withdrawn in spout (19).At this off position, top (25) are closed spout by contacting with spout wall (23).When cap (17) reinstatement, make the material spatial movement in cap (17) in the container (11).The application force that causes pressure reduction thus and cause forces piston (31) to be boosted, and has dwindled the capacity of container (11).

Therefore,, cause cap (17) quantitatively to be depressed, just can distribute the material of scheduled volume because rod member convex shoulder (29) is run into spout wall (23).The sealing that is formed by rod member top (25) contact spout walls (23) inside can prevent that the material in the container (11) is subjected to atmospheric contamination.

Though this is simple embodiment, it is unsuitable for stock production, because before charging material from the bottom toward distributing box, must insert spout (19) to top (25), and must be enclosed within cap (17) on the cylinder (11).The second embodiment (see figure 5) has one to break interior leak free mechanism.Like this, container can charge material before on the cap sleeve.

(see figure 5) in the embodiment of this replacement, flexible piece (21 ') has two rod members (37) and (39), and first bar (37) shape promptly has a top (41) the spitting image of the rod member in the foregoing description, one section is a sideband groove (43) subsequently, another sideband convex shoulder (45).Second bar (39) and bar (37) are in same plane, but away from spout (19).The bottom of second bar (39) is top (47), is used to expose interior sealing (16), opens distributing box.

Fig. 5 embodiment charges embodiment the spitting image of Fig. 1-4.After sealing (16) is installed to container top (14), material is inverted and is poured into to container (11).Piston (31) is put into open end (13) then, and cap (17) is set to sealed end (14) again.

The class of operation of Fig. 5 embodiment is similar to Fig. 1-4.When using for the first time, press cap (17 '), can force top (47) to penetrate sealing (16), and it is overhanging to make top (41) pass spout (19).Like this, groove (43) becomes the cutoff port that runs through spout (19).After pump is ready to, just by to piston (31) pressurization, material poured into pump chamber after, the operation of embodiment is just as among Fig. 1-4.

Above-mentioned these embodiment when neither one unclamps at cap, prevent the mechanism of air admission spout.Therefore, they prevent to enter the working process that air hinders pump by the viscosity of material with to the adhesive ability of spout wall.For this reason, these embodiment should not use low-viscosity material.Also have, since there is not internal valve arrangement, they for example should not use flexible pocket as initial cavity, unless the viscosity of material is enough high, so that material flows out spout and do not cause that bag wall expands when pressurization yet., with reference to the inventor's NO.4,457,954 US Patent have several mechanisms can prevent that feed back is to initial cavity.Use in these mechanisms any one, these embodiment are used as initial cavity with regard to available flexible pocket so.

The inventor's NO.4,457,954 US Patent provide the two-chamber distributing box that a collapsible pocket of usefulness is made initial cavity.Fig. 6 embodiment is to NO.4, the improvement of 457,454 patent working examples, and for this reason, the content that relates in that part patent is at this as a reference.

Fig. 6 represents that the present invention uses an embodiment of flexible pocket.Pocket (60) is filled material and the hydrostatic column of packing into (62), the latter in the upper end opening part of (66) reduced diameter section (64) is arranged and in the bottom (70) located an air extractor vent (68).The pocket (60) that forms initial cavity (61) has a lip limit (72), and reduced diameter section (64) is stretched out on the lip limit.A dish type dividing plate (74) that has medium pore (75) is contained on cylinder barrel (62) and the pocket (60), or it is as the part of pocket (60), perhaps inserts separately.Semisphere cap (76) is by any known method, is set in dividing plate (74) and is connected on the reduced diameter section (64).

Cap (76) have the semisphere circular arch (78) of a flexibility and one from the circular arch center shaft to the rigidity spout (80) that stretches out.Cap (76) can be outpoured by flexible material integral body.Perhaps, rigidity spout (80) can be installed in flexible circular arch (78) and go up (as shown in Figure 6).

Spout (80) comprises a round tube that aligns with container axis (81) and a rectangular tube (82), the latter from the top (83) at round tube (81) top with radially outstanding.

Elastic sealing element (84) is placed in the pumping chamber (85) between cap (76) and the dividing plate (74).Part (84) has a rectangular wedge head (86) that can move in the rectangular section (82) of spout; Also have a tapered cotter head (87), be configured on the hole (75) of dividing plate (74).Extend a flat rectangular shaft (88) in the back of rectangle head (86), it is equivalent to the length of rectangular tube (82).From Rod end (90) down, there is a uprighting spring section (92) to link conical head (87).It pushes sealing contact to rectangle head (86), and tapered cotter (87) from the hole (75) still leave at interval.Link stopper (95) can be set, so that elbow (93) reliably in the above in the spring section (92).Part (84) can be made by plastic mould pressing.

The operating mode of Fig. 6 and Fig. 7 embodiment is similar to the operation of embodiment among Fig. 1-4 and Fig. 5.Press cap (76), bar (88) is advanced, run into spout wall (83) until end (90), wedge head (86) outwards leaves spout (80), has caused an opening that passes spout (80).In the time of along with initial actuating, wedge head (87) moves down and seals up hole (75).When material distributes, cap (76) unclamps, and drives wedge head (86) toward being retracted into spout (80), and wedge head (87) also from the hole (75) leave.Some materials in the flexible pocket (60), the vacuum because of circular arch (80) reinstatement causes is inhaled into the pumping chamber by hole (75) through wedge head (87).

In view of tapered cotter head in operation (87) can prevent that pressure in the pumping chamber (85) from raising to be lost in the initial cavity (61), this embodiment just can be widely used in various fluids, its initial cavity can be flexible pocket (60), can be a plunger shaft, or pass through the container of the band air extractor vent of induction pipe feed.In addition, initial cavity can be filled and store before in advance loading onto pump cap (76).But before using for the first time, must the pumping chamber be full of in the present embodiment, with the method for suction spout (80) or extruding pocket (60).

Fig. 8 represents an embodiment who is full of voluntarily.Present embodiment has used a piston mobile in initial cavity, but the container of an also available flexible pocket or band air extractor vent is selected different materials for use by the various parts to pump, but the material of the various viscosity of present embodiment pumping.

In the embodiment of Fig. 8, container (100) has an initial cavity (101) and a pumping chamber (102).

Initial cavity (101) is the cylinder barrel of a rigidity, and pump frame (104) is housed on the one end (106), and the other end (110) is equipped with a piston mobile (108) after being full of material.Before operation for the first time, pump frame (104) is sealing an end of initial cavity (101).Because initial cavity (101) is sealed, before the head (111) of pump was loaded onto, material can be deposited period of suitable length interior.

Pump frame (104) is a short cylinder barrel, is contained in the top of initial cavity (101).The bottom (112) of base (104) is a disc-shaped part (121), and a detouchable thin slice (122) is arranged at its center.Base (104) also has one from short tube radially-protruding conical nozzle (123).The upper end of cylinder is a thin edge (125).Pump frame (104) can be poured into a mould respectively with cylinder (103), then is fitted together, and perhaps these two parts can be with forming with a kind of rigid material integral body.In fact, (104) can spiral-lock be arrived on the disposable initial cavity (101) at the bottom of the reusable pump.

The capacity in pumping chamber (102) is determined by the inside and the flexible circular arch (128) of pump frame (104).Sealing member (130) and valve member (132) are arranged in pumping chamber (102).Though circular arch (128), sealing member (130) and valve member (132) are preferably made by plastics, each is all used the material of selecting by its spring effect and makes.Material Selection can be the concrete material of pumping and creates an optimized pump head (111).

One end of sealing member (130) has a sphenocephaly (131).Rod member (134) is followed in sphenocephaly (131) back.The latter has one to go up free section (122) than base (104) and also want big hole (135).The position in hole during assembling (135) is just in time aimed at removable section (122).At last, the other end of rod member curves a vertical support (136), and its length approaches the length from disk (121) to spout (123) center.

Valve member (132) has a vertical plunger (138), has a diameter reduction section (140) smaller a little than dividing plate free section (122) diameter on this plunger.Diameter reduction section (140) is more a little longer than the vertical support (136) of sealing member, so that before flange (142) (it is bigger than the diameter of the last through hole (135) of sealing member (130) that diameter of plunger herein becomes) was run into sealing member, the end of diameter reduction section (141) can pass disk (121).At last, spring bracket (144) is from the expansion of the upper end of plunger, forms one arrive greatly can with edge (125) contacted semisphere cover.

By sealing member wedge head (131) is inserted spout (123), valve member (132) is put on the edge (125), and, head (111) is installed on the initial cavity (101) circular arch (128) cover upper limb (125).

The operating mode of Fig. 8 embodiment is similar to other embodiment.The user presses cap (120), makes plunger (140) clog hole (122) (use time shift to fall free section (122) for the first time and be full of pump).Further depress cap (120), because flange (142) is run into hole (135) rod member (134) institute on every side so that rod member (134) bending.The bending of rod member (134) causes that wedge head (131) slides inward along the spout wall, has produced an opening that runs through spout (123).Continue to depress cap (120) and exert pressure, force material to extrude by spout (123) from pumping chamber (102) by circular arch (128).

When the user unclamped cap (120), carriage (144) was mentioned plunger (132), and circular arch (128) swells, and bar (134) is straight and upright simultaneously.Some salvage stores (or air) can be inhaled into pump chamber (102) by spout (123) in the spout during beginning, to prevent drip.But suck pumping chamber (102) before at a large amount of air, wedge head (131) has sealed up spout (123), because rod member (134) is straight and upright substantially before circular arch (128) significantly swells.Because carriage (144) continues to mention plunger (132), the top of plunger (141) no longer stop up the hole (122) on the dividing plate (121), so material sucks pumping chamber (102) from initial cavity (101).Piston 108 advances simultaneously, and the capacity of initial cavity (101) is reduced.

Like this, because plunger (132) is only depressed the length of its diameter reduction section (140), so distribute the material of predetermined close.Spout is a leak free voluntarily, does not have drip, and this is because wedge head (131) can return spout (123) automatically.

Present embodiment does not require before using for the first time and is full of, because circular arch (128) unclamps, wedge head (131) is replied it at circular arch (128) and has been sealed up spout (123) before hemispherical, so pump does not need flow friction (sticking to spout (123) the inside by material causes) to prevent air admission pumping chamber (102) yet.Therefore, the present embodiment assembling is easy, and the storage life is long, because before the user uses for the first time, initial cavity (101) is sealing always.

Fig. 9 represents another embodiment.The jar of having used a ventilation in the illustrating of present embodiment is as initial cavity.Certainly, for example the collapsible pocket among Fig. 6 perhaps also can be used in this pump dispenser as a piston and a cylinder barrel among Fig. 8.

In the present embodiment, jar (150) fill material by its open end (152).Cap (154) is screwed on the open end (152) by screw thread (158), has formed the dividing plate (155) between initial cavity (156) and pumping chamber (157).The opening (160) of induction pipe (159) from dividing plate (155) stretches into material.

Cap (154) has a short cylinder barrel (161) and the flexible piece that has slit (163) that inside is upright with radially-protruding spout (162), has constituted the base of pumping chamber (157).In the bottom of spout (162) groove (165) is arranged.Spout closer (164) injects spout (162), and the fastening tip (166) is penetrated the slit of flexible piece (163), so that closer top (168) seal up spout (162).Flexible circular arch (170) is contained in the top (172) of cylinder (154), and this is by upward realizing inside flange (174) and outward flange (176) gland in cylinder barrel top (172).Plunger (178) from the circular arch center hang down to passage (160) directly over, its external diameter approaches the minimum diameter of passage (160).One air extractor vent (180) is arranged on the cap (154), and it allows air admission jar (150), but does not allow air exhaustion.

Other embodiment of operation extraordinary image of embodiment among Fig. 9.With circular arch under the hand (170), cause that plunger (178) descends, and clogs passage (160).Continue to depress, just make pumping chamber (157) internal pressure rising (flexible piece (163) bending) overflow spout (162) along groove (165) through the top (168) of closer (164) up to fluid.After in case the material spill pressure reduces, part (163) reinstatement, closer (164) is sealed spout (162) through the spout withdrawal until top (168).Unclamp circular arch (170), in its restorable while, because plunger (178) rises, passage (160) is opened, and fluid is pumped up through passage (160) from induction pipe (159).Along with the minimizing of material in the jar (150), air admission air extractor vent (180) is with the pressure in the stable can.

Thereby present embodiment distributes in check dosage, because plunger (178) has limited the motion of circular arch.Spout also clogs spout (162) and seals voluntarily because of part (163) retracts top (168).

Present embodiment does not need to be full of, because when circular arch (170) when unclamping, closer top (168) are played valve and done in order to seal spout (162).So, owing to the swell volume change that causes of circular arch just draws up fluid come through induction pipe (159).

Figure 10 represents another embodiment.Be as initial cavity (jar of collapsible pocket or band air extractor vent also can use) in the diagram of present embodiment with a plunger shaft.

In the present embodiment, cylinder barrel (190) has two open ends (192), (194).Piston (196) end (192) of packing into, the other end (194) (after in cylinder (190), filling material) and cap (198) is packed into.Cylinder (190), piston (196) and cap (198) have been determined initial cavity (200).

Cap (198) is a short cylinder barrel, is contained in the top of initial cavity (200).The bottom (202) of cap (198) is the disk (204) that removable foil (206) are equipped with at a center.There is a tapered flanges (208) to lead to removable foil (206) on the disk.Also there is one on the cap (198) from the short radially-protruding spout of cylinder barrel (210).Spout (210) has the groove of opening (212), with material in the pilot jet.The cylinder barrel upper end is the edge (214) that approaches.Cap (198) can be to separate with cylinder (190) to form, and also can use this two part with a kind of rigid material integral body to form.

By inside flange (220) and outward flange (222) gland in the way of crown portion edge (214), flexible circular arch (218) is installed on the top (214) of cap (198).Plunger (224) from the circular arch center hang down to passage (208) directly over, its external diameter approaches the diameter of removable foil (206).Swell an annular boss (223) in the external diameter direction of plunger (224), the setting of its position is when pump distributes required dosage, and boss (223) is just in time run into flange (208).

Cap (198) and circular arch (218) have formed pumping chamber (225).

Flexible seals (226) spout (210) of packing into is so that tapered tip of sealing member (228) and spout (210) close fit.Sealing member has flexible grips (230), and it stretches out a thin bar (232) by spout and promotes top (228) in the spout.

The operation of embodiment among Figure 10 is with other embodiment.The user presses circular arch (218), is at first to be depressed by plunger (224), passes passage (208) and removes thin slice (206).This uses for the first time also and is full of pumping chamber (225) by air is discharged from spout (210).

The distribution of material is pressured circular arch down.During beginning, plunger (224) clogs passage (208), and the pressure of the interior material in pumping chamber (225) is raise.This pressure that acts on top (228) makes sealing member handgrip (230) bending, and shift out from spout (210) top (228).Material flows along groove (212) and through top (228), discharges from spout (210).

After pumping chamber (225) internal pressure reduces basically (being that circular arch (218) unclamps), handgrip (230) barre (232) withdrawal spout (210) therefore is withdrawn into original position in the spout (210) to top (228) again.Unclamping of circular arch (218) restores to the original state itself, makes plunger (224) withdraw from passage (208).Material enters pumping chamber (225) from initial cavity (220) through open channel (208), makes the pressure in the container even.Piston (196) is upwards smoked, and the capacity of initial cavity reduces.

Thereby present embodiment distributes in check dosage, because the boss (223) on the plunger (224) has limited the motion of circular arch.Spout (210) also returns sealing voluntarily in the spout (210) because of handgrip (230) makes sealing member top (228).

Claims (8)

1, the vacuum pump apparatus on a kind of distributing box of the initial cavity that is used to have splendid attire material to be allocated comprises:

A. be used to limit the mechanism in pumping chamber, this pumping chamber has rigid base, is roughly the movable device that columniform sidewall sections and being used for reduces the volume in pumping chamber and therefrom distributes material,

B. from the radially-protruding spout of the sidewall sections in pumping chamber, spout has a passage, inner opening that is communicated with an end and the pumping chamber of passage and one and the other end of passage and the outer opening of external environment connect, and material distributes by opening in addition,

C. integral type self sealss closing member that is installed in the spout, it has the apical end of the outer opening of closing spout,

D. when the pumping chamber is in non-operating state, thereby be used for closing member is biased into the bias mechanism that the other end that makes its top be resisted against described passage is closed the outer opening of described spout,

E. closing member is in response to the motion of the movable device in described pumping chamber, and its apical end can be shifted out off position,

It is characterized in that:

F. comprise and be used to stop the mechanism that refluxes from the pumping chamber and distribute the material of controlled dose, it comprises the tapered flanges and a valve member that links to each other with described movable device that its terminal and a hole in the described rigid base join, wherein said base is separated the initial cavity of pumping chamber and splendid attire material to be allocated

G. described valve member has a plunger that is used for opening and closing the hole on the described base during operation,

H. on the predetermined medium position of described plunger, individual stop motion mechnism is arranged, when engaging with described tapered flanges, can distribute the material of predetermined close from described spout with convenient stop motion mechnism,

I. the hole on the described rigid base has the sheet segment that can remove, when described plunger initial manipulation, can make this sheet segment break away from described base, to form described hole.

2, a kind of vacuum pump dispenser device comprises:

A. initial cavity that is used for splendid attire material to be allocated,

B. limit the mechanism in a pumping chamber, this pumping chamber has a rigid base, and one is roughly the movable device that columniform sidewall sections and being used for reduces the volume in pumping chamber and therefrom distributes material,

C. one from the radially-protruding spout of described sidewall sections, it has a passage, inner opening that is communicated with an end and the pumping chamber of passage and one and the other end of passage and the outer opening of external environment connect, described material distributes by opening in addition

D. integral type self sealss closing member that is installed in the described spout, it has the apical end of the outer opening of closing described spout,

E. when described pumping chamber is in non-operating state, thereby be used for described closing member is biased into the bias mechanism that the other end that makes its described top be resisted against described passage is closed the outer opening of described spout,

F. described closing member is in response to the motion of the movable device in described pumping chamber, and its described top can be shifted out described off position,

It is characterized in that:

G. comprise the mechanism that is used to stop material to reflux and distributes the material of controlled dose from described pumping chamber, this mechanism has tapered flanges and valve member that links to each other with described movable device that its terminal and a hole in the described rigid base join, wherein said base is separated described pumping chamber and the described initial cavity that material to be allocated is housed

H. described valve member has a plunger that is used for opening and closing the hole of described base during operation,

I. have stop motion mechnism at the predetermined middle part of described plunger, when engaging with described tapered flanges, can distribute the material of predetermined close from described spout with convenient stop motion mechnism,

J. the hole in the described rigid base has the sheet segment that can remove, when described plunger initial manipulation, can make this sheet segment break away from described base, forming described hole,

3,, it is characterized in that described stop motion mechnism comprises a radially-protruding boss according to the device of claim 1 or 2.

4,, it is characterized in that hole in the described base and the sheet segment that can remove all have circular cross-sectional plane according to the device of claim 1 or 2.

5, according to the device of claim 1, it is characterized in that described movable device comprises compliant mechanism, this compliant mechanism has a flexible vault that is connected above the described base.

6, according to the device of claim 2, it is characterized in that described movable device comprises compliant mechanism, this compliant mechanism has a flexible vault that is connected above the described base.

7, according to the device of claim 5 or 6, it is characterized in that described bias mechanism is made of the part of described closing member, this part extends to inside, described pumping chamber from the top of described closing member by described spout, this part has an arc flexible grips, this handgrip is towards the direction bending of leaving the inner opening of described spout, so that, make it to be in closed condition, and need not described outer opening is adopted additional bias voltage or sealing mechanism with the described apical end of complete self-packing mode bias voltage.

8,, it is characterized in that the mechanism in described qualification pumping chamber can dismantle from described initial cavity, and described initial cavity can disposable according to the device of claim 2.

Images