CN102991839B - Use the liquor pump of elastic piston, piston component and production method thereof - Google Patents
Use the liquor pump of elastic piston, piston component and production method thereof Download PDFInfo
- Publication number
- CN102991839B CN102991839B CN201110266248.9A CN201110266248A CN102991839B CN 102991839 B CN102991839 B CN 102991839B CN 201110266248 A CN201110266248 A CN 201110266248A CN 102991839 B CN102991839 B CN 102991839B
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- piston
- described piston
- junction surface
- cylinder
- head
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000013536 elastomeric material Substances 0.000 claims abstract description 9
- 239000012530 fluid Substances 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 8
- 241000278713 Theora Species 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 7
- 239000012263 liquid product Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
- F04B39/0011—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons liquid pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1023—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem
- B05B11/1026—Piston pumps having an outlet valve opened by deformation or displacement of the piston relative to its actuating stem the piston being deformable and its deformation allowing opening of the outlet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1043—Sealing or attachment arrangements between pump and container
- B05B11/1046—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container
- B05B11/1047—Sealing or attachment arrangements between pump and container the pump chamber being arranged substantially coaxially to the neck of the container the pump being preassembled as an independent unit before being mounted on the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1059—Means for locking a pump or its actuation means in a fixed position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1073—Springs
- B05B11/1077—Springs characterised by a particular shape or material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Closures For Containers (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention provides a kind of liquor pump using elastic piston.This liquor pump has piston component, and this piston component comprises piston rod, piston head, ground piston junction surface between piston rod and piston head and the piston be made up of elastomeric material on being set between piston rod and piston head piston junction surface in constriction shape.Piston rod and piston head separately to provide and together with being assemblied in, piston junction surface is made up of the piston junction surface forming section at least one in piston rod and piston head.The present invention also provides a kind of method for the production of above-mentioned piston component.In addition, the present invention also provides a kind of piston component for liquor pump, and the upper end edge periphery that this piston is formed with circular inner ledge at it is formed with annular breach.Utilize piston component of the present invention and production method thereof, contribute to improving Product Precision and quality, and be convenient to realize Automated assembly, be specifically applied to the liquor pump adopting elastic piston.
Description
Technical field
The present invention relates to liquor pump field, more particularly relate to a kind of liquor pump using elastic piston.
Background technology
Liquor pump is generally mounted in the opening part of container, for the Manual press operation by user, the oily liquids in container is pumped container for use.What this liquor pump adopted usually is the piston that non-plastic material is made by elastomeric material (such as nitrile rubber), is subject to the impact of oily liquids plastic material because elastomeric material does not resemble and produces distortion.
At present, market there is the liquor pump of the employing elastic piston of many above-mentioned types, be specifically designed to pumping oily liquid product.Mostly there is manufacture assembling difficulty, be difficult to the problems such as improving product precision in the traditional liquid pump of this type.
JP2004-131163 just discloses a kind of liquor pump of the above-mentioned type.As shown in Fig. 1 a-1e, this liquor pump mainly comprises pressure head 120, cylinder 130, integral type facing-cylinder cover 140, spring 150, lower check valve ball 160 and piston component 110.This liquor pump is arranged on the peristome (normally the top of the opening of container) of containers for liquid products, for the liquid product in container being assigned to the outside of container by integral type facing-cylinder cover 140.In known manner, piston component 110 pumps in cylinder 130 under the drive of pressure head 120, thus the pump function needed for realizing.Piston component 110 comprises the piston rod 111 extended longitudinally and piston head 112 that are integrally formed and is set in the piston 113 on the piston junction surface 115 between piston rod 111 and piston head 112.Piston junction surface 115 is configured to the cylindrical neck down portions between piston rod 111 and piston head 112, and its columniform exterior contour matches with the cylindrical interior profile of the piston 113 be set in outside it.Be formed with fluid passage 114 at the center of the piston rod 111 be integrally formed and piston head 112, the lower end closed of this fluid passage 114 is in piston head 112 place, and upper end is at the top end opening of piston rod 111.Be formed at piston junction surface 115 place and be substantially transverse to fluid passage 114 and radial direction runs through piston junction surface 115 extends and the interconnection 116 be communicated with this fluid passage 114, this interconnection can think an extension of fluid passage 114, thus makes the liquid in the reservoir of cylinder 130 can be assigned to external container by fluid passage 114 with as its interconnection 116 extended.Piston rod 111 has towards piston junction surface 115 tapered type conical bench face 1111 in the junction with piston junction surface 115, and piston head 112 is basically perpendicular to longitudinal steep step surface 1121 having with junction, piston junction surface 115.Piston 113 substantially cylindrical cannula-like, its sidewall is formed with a circular inner ledge 1131, and this circular inner ledge limits a central circular through hole, for piston rod 111 and piston head 112 piston junction surface 115 through and basic around this piston junction surface 115.Two relative ora terminalis of piston 113 expand outwardly respectively gradually, thus form lower seal edge 1132 and upper sealing edge 1133.
Under the static confined state of liquor pump, piston component 110 is slidably received within cylinder 130, the circular inner ledge 1131 of its piston 113 be set on piston junction surface 115 seals interconnection 116, and the lower seal edge 1132 of piston 113 and upper sealing edge 1133 are resisted against on the sidewall of cylinder 130 respectively.In this state, fluid passage 114 is communicated with by the fluid between interconnection 116 and the reservoir of cylinder 130 and is blocked by the circular inner ledge 1131 of piston 113, and the liquid in the reservoir of thus cylinder 130 outwards cannot be distributed by fluid passage 114.
Be pressed downwardly when pressure head 120 and the power driving piston component 110 to overcome spring 150 moves downward relative to cylinder 130 time, on the sidewall that two sealing edges 1132,1133 of piston 113 are resisted against cylinder 130 and slide downward.Because the downward drive force of the circular inner ledge 1131 of piston rod 111 and piston junction surface 115 pairs of pistons 113 and cylinder 130 sidewall are to the compound action of the upwards friction force of the sealing edge 1132,1133 of piston 113, and the deformation space provided for piston 113 due to the type conical bench face 1111 of piston rod 111, cause piston 113, towards side, type conical bench face 1111 that is piston rod 111 side, distortion as shown in Figure 1 b occurs.This distortion causes the circular inner ledge 1131 of piston 113 to depart from piston junction surface 115, thus cause the sealing of piston 113 pairs of interconnections 116 to be opened, thus allow liquid in the reservoir of cylinder 130 under the downward pump function of piston component 110 by interconnection 116 and fluid passage 114 by outside pumping.Afterwards, when removing the downward pressure on pressure head 120, piston component 110 under the power that the upsprings effect of spring 150 relative to cylinder 130 upward movement.Now, the unpromising piston 113 of steep end face 1121 due to piston head 112 provides the space to the distortion of piston head 112 side, and thus piston 113 substantially can not produce distortion and make the circular inner ledge 1131 of piston 113 depart from piston junction surface 115 and open the sealing to interconnection 116.In a word, piston component 110 is configured to: when piston component 110 keeps static relative to cylinder 130, piston 113 remains on the engage position with piston junction surface 115, thus closes interconnection 116, stops reservoir to be communicated with external container by fluid passage 114; When piston component 110 moves downward relative to cylinder 130, piston 113 produces distortion and departs from this engage position, thus opens the interconnection 116 at piston junction surface 115, allows reservoir to be communicated with external container by fluid passage 114; And when piston component 110 is relative to cylinder 130 upward movement, piston 113 still remains on this engage position substantially, thus close interconnection 116, stop reservoir to be communicated with external container by fluid passage 114.Therefore, in piston component 110, the piston 113 being arranged on piston junction surface 115 place serves the effect of check valve, and on this, check valve and lower check valve ball 160 cooperate the imbibition and the discharge opeing effect that allow the reservoir realizing cylinder 130 mutually.
JP52-112107 also reveal that a kind of liquor pump of the above-mentioned type.As shown in figs. 2 a-e, with the roughly the same of above-mentioned JP2004-131163, difference, the basic structure of this liquor pump is only that the structure of piston 213 changes to some extent.Therefore, the first place numeral " 1 " of the Reference numeral in Fig. 1 a-1e is all replaced and is obtained with " 2 " by the Reference numeral adopted in Fig. 2 a-2e, and identical Reference numeral represents similar component except the first numeral.Specifically, this liquor pump mainly comprises pressure head 220, cylinder 230, integral type facing-cylinder cover 240, spring 250, lower check valve ball 260 and piston component 210.Piston component 210 comprises the piston rod 211 extended longitudinally and piston head 212 that are integrally formed and the piston 213 being set in piston junction surface 215 place between piston rod 211 and piston head 212.Piston 213 is different from the structure of the piston 113 in JP2004-131163, and it is integrally made up of upper and lower two parts substantially, and upper part 2135 is roughly cylindrical, and lower part 2136 is roughly in taper type.The upper end of upper part 2135 is formed with circular inner ledge 2137, and this circular inner ledge limits a central circular through hole, for the piston junction surface 215 between piston rod 211 and piston head 212 through and basic around this piston junction surface 215.Lower part 2136 along with to expand outwardly gradually to downward-extension and thinning gradually, with form piston 213 with a sealing member of cylinder 230 sidewall contact.The thickness of upper part 2135 will significantly be thicker than lower part 2136.
The mode of operation of the liquor pump that JP52-112107 discloses and the similar of JP2004-131163, wherein, in a word, piston component 210 is also configured to: when piston component 210 keeps static relative to cylinder 230, piston 213 remains on the engage position with piston junction surface 215, thus close interconnection 216, stop reservoir to be communicated with external container by fluid passage 214; When piston component 210 moves downward relative to cylinder 230, piston 213 produces distortion and departs from this engage position, thus opens the interconnection 216 at piston junction surface 215, allows reservoir to be communicated with external container by fluid passage 214; And when piston component 210 is relative to cylinder 230 upward movement, piston 213 still remains on this engage position substantially, thus close interconnection 216, stop reservoir to be communicated with external container by fluid passage 214.Specifically, be pressed downwardly when pressure head 220 and the power driving piston component 210 to overcome spring 250 moves downward relative to cylinder 230 time, on the sidewall that the ora terminalis of the lower part 2136 of piston 213 is resisted against cylinder 230 and slide downward.Because the downward drive force of the circular inner ledge 2137 of piston rod 211 and piston junction surface 215 pairs of pistons 213 and cylinder 230 sidewall are to the compound action of the upwards friction force of the ora terminalis of the lower part 2136 of piston 213, and the deformation space provided for piston 213 due to the type conical bench face 2111 of piston rod 211, cause piston 213, towards side, type conical bench face 2111 that is piston rod 211 side, distortion as shown in figure 2b occurs.This distortion causes the circular inner ledge 2131 of piston 213 to depart from piston junction surface 215, thus cause the sealing of piston 213 pairs of interconnections 216 to be opened, thus allow liquid in the reservoir of cylinder 230 under the downward pump function of piston component 210 by interconnection 216 and fluid passage 214 by outside pumping.Afterwards, when removing the downward pressure on pressure head 220, piston component 210 under the power that the upsprings effect of spring 250 relative to cylinder 230 upward movement.Now, the unpromising piston 213 of steep end face 2121 due to piston head 212 provides the space to the distortion of piston head 212 side, and thus piston 213 substantially can not produce significantly distortion and make the circular inner ledge 2131 of piston 213 depart from piston junction surface 215 and open the sealing to interconnection 216.
For the structure of above-mentioned two kinds of prior aries, the piston rod of its piston component and piston head and the constriction piston junction surface between them are integrally formed, and this piston junction surface also has interconnection, therefore, the composite die comprising half module and core must be used to produce the piston rod-piston junction surface-piston head component of this integral type.This manufacturing process of complicated composite die that adopts not only increases equipment cost, but also limits capacity rating, looses core and the multiple operation such as parting because wherein will relate to.And as everyone knows, half mode structure existence yields poorly, the shortcoming of low precision, wherein, inevitably there is dislocation due to die joint and produce the problem of overlap, therefore easily affecting the dimensional accuracy of product, finally may cause the problem of such as leakage and so on of assembly.
Another problem of above-mentioned prior art structure is, due to the neck down portions (namely its outer dia is less than the outer dia of piston rod and piston head) that the piston junction surface of matching with piston is between piston rod and piston head, therefore by Piston assembling to this piston junction surface time, need the central circular through hole of the circular inner ledge of piston expanding by force, so that by there is larger-diameter piston rod or piston head and slippage to piston junction surface, and such assembling is wasted time and energy very much, and automated assembly line can not be applicable to.In addition, the central circular through hole of piston is by piston rod or the such large-diameter portion timesharing of piston head, and its inner circumference is easily impaired breaks, thus affects the work life of piston component and then liquor pump.
In addition, for the structure of the piston that JP52-112107 discloses, when making it move downward when pressing pressure head, because the lower part 2136 of piston 213 is subject to the effect of cylinder 230 sidewall to fluid pressure in its friction force upwards and cylinder, piston 213 originally should be rapidly to distortion and open the sealing of circular inner ledge 2137 pairs of interconnections 216 of piston 213, but the upper part 2135 due to piston 213 is thicker and not yielding, likely cause interconnection 216 to fail to be opened or to open in time, thus cause cannot the problem of pumping liquid.
Summary of the invention
In view of the liquor pump Problems existing of the use elastic piston of prior art, main purpose of the present invention is to provide a kind of Product Precision and Quality advance and is convenient to realize the liquor pump of the use elastic piston of Automated assembly.
Another object of the present invention is to provide a kind of be convenient to realize automated job and be conducive to guaranteeing the method for the production of piston component of Product Precision and quality.
Another object of the present invention is the piston component for liquor pump providing a kind of functional reliability to improve.
In order to realize above-mentioned purpose of the present invention, according to one aspect of the present invention, a kind of liquor pump using elastic piston is provided, for be arranged on container with by the liquid pumping in described container to described external container, described liquor pump comprises longitudinally-slidable the piston component be arranged in cylinder along described liquor pump, described cylinder is defined for wherein and stores the reservoir of liquid, and described piston component comprises: piston rod, and its center is longitudinally run through and is formed with fluid passage; Piston head, it is connected to the lower end of described piston rod; Piston junction surface, it is that constriction shape ground is between described piston rod and described piston head, described piston head is connected to described piston rod by described piston junction surface, described piston junction surface have be communicated with described fluid passage, radially run through the interconnection that described piston junction surface extends, thus for the liquid carrying in described reservoir is for the path pumping out described container; And the piston to be made up of elastomeric material, it is set on the described piston junction surface between described piston rod and described piston head, for closing described interconnection openably, wherein, described piston component is configured to: when described piston component keeps static relative to described cylinder, described piston remains on the engage position with described piston junction surface, thus closes described interconnection, stops described reservoir to be communicated with described external container by described fluid passage; When described piston component moves downward relative to described cylinder, described piston produces distortion and departs from described engage position, thus opens the interconnection at described piston junction surface, allows described reservoir to be communicated with described external container by described fluid passage; When described piston component is relative to described cylinder upward movement, described piston remains on described engage position, thus closes described interconnection, stops described reservoir to be communicated with described external container by described fluid passage.The feature of liquor pump of the present invention is, described piston rod and described piston head separately to provide and together with being assemblied in, described piston junction surface is made up of the piston junction surface forming section at least one in described piston rod and described piston head.
Here by the way, described herein "up" and "down" determines relative to the orientation (it is consistent with vertical direction that liquor pump is arranged to its longitudinal direction) of liquor pump when normal use.
Utilize the liquor pump of this use elastic piston of the present invention, because piston rod and piston head separately to provide and together with being assemblied in, thus can avoid the piston rod of integral type-piston junction surface-piston head component because needing to use complex combination mould problem, the problem includes: the problem that manufacture is complicated, capacity rating is not high.And, because the present invention does not need to use half module, thus eliminate to adopt half module to carry out molded relevant to yield poorly, the problem of low precision.
According to a preferred implementation of the present invention, the guide rod that described piston head comprises base and upwards extends from described base, described piston rod comprises the guide rod receiving opening being positioned at its lower end, described guide rod receiving opening is formed as a part for described fluid passage, described guide rod inserts and is matched with in described guide rod receiving opening and described piston head is assemblied in described piston rod, described guide rod is formed with at least one longitudinal fluting along its longitudinal length, described longitudinal fluting forms vertical passage in described guide rod receiving opening, described piston junction surface is formed with the interconnection of respective numbers, described longitudinal fluting is communicated with to the corresponding described interconnection in described piston junction surface, thus described longitudinal fluting provides the path from described interconnection to described fluid passage.
Utilize such structure, piston rod and piston head can utilize together with they self structure is affixed to easily, and without the need to other any independent connecting device, this makes assembling become more convenient, is easy to realize automated production.And once piston rod connects together with piston head, required fluid passage, interconnection and vertical passage just can be shaped, thus without any need for extra manufacturing procedure, productive costs is dropped to minimum.
According to a preferred implementation of the present invention, described piston junction surface is provided by each in described piston rod and described piston head, wherein said piston rod is formed with columniform reducing pipe portion as a described piston junction surface forming section in its lower end, described reducing pipe portion limits a part for described guide rod receiving opening, described piston head upper end of base described in it is formed with columniform undergauge boss portion as piston junction surface forming section described in another, described reducing pipe portion has identical diameter with described undergauge boss portion, make when described piston head is assemblied in described piston rod, described reducing pipe portion and described undergauge boss portion abut against each other and jointly form described piston junction surface.
According to the present invention, the described interconnection at described piston junction surface can be formed in described undergauge boss portion.The described interconnection at described piston junction surface can be integrally formed with the described longitudinal fluting of described guide rod.Certainly, the described interconnection at described piston junction surface also can be formed in described reducing pipe portion, or, can be formed in described reducing pipe portion and described undergauge boss portion simultaneously.
According to the present invention, described piston junction surface can only be provided by described piston head, wherein said piston head upper end of base described in it is formed with columniform undergauge boss portion as described piston junction surface forming section, when described piston head is assemblied in described piston rod, described undergauge boss portion is resisted against the lower end of described piston rod and forms described piston junction surface.Certainly, described piston junction surface also can only be provided by described piston rod, wherein said piston rod is formed with columniform reducing pipe portion as described piston junction surface forming section in its lower end, described reducing pipe portion limits a part for described guide rod receiving opening, when described piston head is assemblied in described piston rod, described reducing pipe portion is resisted against the upper end of the described base of described piston head and forms described piston junction surface.
According to the present invention, described guide rod can be formed with depressions or protrusions on its outer peripheral face, and described conduit receiving opening side face is formed with the projection or depression that match within it, thus helps described piston head to be assemblied in described piston rod.
According to the present invention, when described liquor pump comprises integral type facing-cylinder cover and pressure head, described cylinder is connected to the downside of described integral type facing-cylinder cover, described pressure head is connected to the upper end of described piston rod, described pressure head is stamped a pressing stroke top dead center position and a pressing bottom of stroke position relative to described integral type facing-cylinder, described integral type facing-cylinder cover has the outer ring and inner ring that vertically extend, described outer ring is used for engaging with the open neck of described container and described liquor pump being installed on described container, described inner ring engages with the upper end of described cylinder and makes described cylinder be connected to the downside of described integral type facing-cylinder cover and form the cylinder closed, when described pressure head is in described pressing stroke top dead center position relative to described integral type facing-cylinder cover, the lower end of described inner ring is engaged in the described annular breach of described piston.
According to the present invention, when described cylinder is formed with the balancing air holes for balancing described container external and internal pressure on its sidewall, when described pressure head is in described pressing stroke top dead center position relative to described integral type facing-cylinder cover, described balancing air holes can be positioned at the sealing edge of described piston and the top against point of described cylinder side wall, and is positioned at the described inner ring of described integral type facing-cylinder cover and the below against point of described piston.
According to the present invention, described piston rod can have in the junction with described piston junction surface towards tapered type conical bench face, described piston junction surface, and described piston head has the steep step surface perpendicular to longitudinal direction in the junction with described piston junction surface, described type conical bench face provides deformation space for described piston.Described piston junction surface can have diameter-increasing portion in the junction with described type conical bench face.
In addition, according to another aspect of the present invention, there is provided a kind of method for the production of piston component, described piston component is the piston component used in above-mentioned liquor pump, and described method comprises: be molded dividually and provide described piston rod, described piston head and described piston; Described piston bush being located at being suitable in described piston rod and described piston head receives on one of described piston; Together with being assemblied in described piston head by described piston rod, described piston is set on described piston junction surface between described piston rod and described piston head.
Utilize said method of the present invention, do not need complicated composite die, and do not relate to the expanding operation of piston in traditional handicraft, thus piston component can be produced easily with lower cost, and the higher final products of q&r can be obtained.And this method is convenient to realize automated production, thus realizes high yield.
In said method of the present invention, piston rod and piston head are all had to the occasion of the piston junction surface forming section for forming piston junction surface, piston can be received in the piston junction surface forming section of any one in piston rod and piston head, and namely piston rod and piston head are all suitable for receiving piston; And there is guide rod for inserting the occasion of the guide rod receiving opening of piston rod for piston head, piston is more advantageously be received on the guide rod of piston head.
In addition, an aspect is also had according to of the present invention, a kind of piston component for liquor pump is provided, described liquor pump for be arranged on container with by the liquid pumping in described container to described external container, described liquor pump comprises longitudinally-slidable the piston component be arranged in cylinder along described liquor pump, described cylinder is defined for wherein and stores the reservoir of liquid, and described piston component comprises: piston rod, and its center is longitudinally run through and is formed with fluid passage; Piston head, it is connected to the lower end of described piston rod; Piston junction surface, it is that constriction shape ground is between described piston rod and described piston head, described piston head is connected to described piston rod by described piston junction surface, described piston junction surface have be communicated with described fluid passage, radially run through the interconnection that described piston junction surface extends, thus for the liquid carrying in described reservoir is for the path pumping out described container; And the piston to be made up of elastomeric material, it is set on the described piston junction surface between described piston rod and described piston head, for closing described interconnection openably, described piston component is configured to: when described piston component keeps static relative to described cylinder, described piston remains on the engage position with described piston junction surface, thus close described interconnection, stop described reservoir to be communicated with described external container by described fluid passage; When described piston component moves downward relative to described cylinder, described piston produces distortion and departs from described engage position, thus opens the interconnection at described piston junction surface, allows described reservoir to be communicated with described external container by described fluid passage; When described piston component is relative to described cylinder upward movement, described piston remains on described engage position, thus closes described interconnection, stops described reservoir to be communicated with described external container by described fluid passage.The feature of this piston component is, described piston comprises the body of the cylindrical shape substantially in both ends open, described body is formed with the circular inner ledge of radial inward projection at its upper end, on the outer peripheral face that described circular inner ledge is engaged in described piston junction surface and for sealing described interconnection openably, described body is formed in its lower end slidably against the sealing edge of the sidewall of described cylinder, described sealing edge be described body along with expanding outwardly gradually to downward-extension and the ora terminalis of thinning bottom, its periphery of the upper end edge being formed with described circular inner ledge of described body is formed with annular breach.
Utilize above-mentioned piston component of the present invention, because the piston of deformable elastomeric material is formed with annular breach at the periphery being formed with the upper end of circular inner ledge of its body, thus reduce the rigidity of this part, avoid the rigidity that causes because of the existence of horizontal inward flange to become large, be not easy to the problem of being out of shape, thus improve this piston and then be the functional reliability of piston component.And, this annular breach can engage with the inner ring of integral type facing-cylinder cover and form sealing ring surface, and the sealing of sealing anchor ring and piston lower seal edge and cylinder side wall is cooperated mutually and contributed to preventing the leakage of balancing air holes of liquid in container by being formed in cylinder side wall.
Other feature of the present invention and advantage embody passing through the description of exemplary embodiment referring to accompanying drawing.
Accompanying drawing explanation
Fig. 1 a is the cutaway view of a liquor pump of prior art;
Fig. 1 b is the liquor pump of Fig. 1 a is in the process of moving downward cutaway view at piston component;
Fig. 1 c is the lateral plan of the piston rod-piston junction surface-piston head of the integral type adopted in the liquor pump of Fig. 1 a;
Fig. 1 d is the cutaway view along the A-A line in Fig. 1 c;
Fig. 1 e is the cutaway view of the piston adopted in the liquor pump of Fig. 1 a;
Fig. 2 a is the cutaway view of another liquor pump of prior art;
Fig. 2 b is the liquor pump of Fig. 2 a is in the process of moving downward cutaway view at piston component;
Fig. 2 c is the lateral plan of the piston rod-piston junction surface-piston head of the integral type adopted in the liquor pump of Fig. 2 a;
Fig. 2 d is the cutaway view of piston rod-piston junction surface-piston head along the B-B line in Fig. 2 c of integral type;
Fig. 2 e is the cutaway view of the piston adopted in the liquor pump of Fig. 2 a;
Fig. 3 a is the cutaway view of the liquor pump of the embodiment of the present invention, and wherein pressure head is in pressing stroke top dead center position relative to integral type facing-cylinder cover;
Fig. 3 b is the liquor pump of Fig. 3 a is in the process of moving downward cutaway view at piston component;
Fig. 4 a is the lateral plan of the piston rod adopted in the liquor pump of Fig. 3 a;
Fig. 4 b is the cutaway view of piston rod along the C-C line in Fig. 4 a;
Fig. 4 c is the block diagram of the piston rod of Fig. 4 a;
Fig. 5 a is the birds-eye view of the piston head adopted in the liquor pump of Fig. 3 a;
Fig. 5 b is the cutaway view of piston head along the D-D line in Fig. 5 a;
Fig. 5 c is the lateral plan of the piston head of Fig. 5 a;
Fig. 5 d is the block diagram of the piston head of Fig. 5 a;
Fig. 6 a is the lateral plan of the piston adopted in the liquor pump of Fig. 3 a;
Fig. 6 b is the cutaway view of piston along the line E-E in Fig. 6 a;
Fig. 6 c is the block diagram of the piston of Fig. 6 a;
Fig. 7 is the view sub-anatomy of the piston component adopted in the liquor pump of Fig. 3 a; And
Fig. 8 is the block diagram of the piston component of Fig. 7, and wherein a part for piston is cut with the structure more clearly showing piston junction surface.
Fig. 9-10 is the views being similar to Fig. 3-4, it illustrates another embodiment of piston rod and piston head;
Figure 11-12 is the views being similar to Fig. 3-4, it illustrates another embodiment of piston rod and piston head.
Detailed description of the invention
See Fig. 3-6, this liquor pump mainly comprises piston component 10, pressure head 20, cylinder 30, integral type facing-cylinder cover 40, spring 50 and lower check valve ball 60.This liquor pump is arranged on the peristome (normally the neck of the opening of container) of containers for liquid products (not shown) by integral type facing-cylinder cover 40.Certainly, facing and the cylinder cover of separation can also be adopted.Mainly relate to the piston component in liquor pump due to the present invention, therefore applicant is not described in detail other composition component of liquor pump at this, and these composition components can be traditional structures.
Piston component 10 is made up of piston rod 11, piston head 12 and the piston 13 on being set between piston rod 11 and piston head 12 piston junction surface 15, wherein, piston rod 11 and piston head 12 can be made up of the plastic material (such as polypropylene) compared with tool rigidity, and piston 13 is made by compared with the elastomeric elastomeric material of tool (such as nitrile rubber and thermoplastic polyurethane).The piston rod 11 wherein heart longitudinally runs through and is formed with fluid passage 14, and this fluid passage is made up of the part of multistage different-diameter.Piston rod 11 comprises pressure head connecting portion 1101 at its upper end, the outer peripheral face of this pressure head connecting portion is circumferentially formed with the prominent rib 1107 of annular, the prominent rib of this annular matches with the respective annular notch that the inner peripheral surface of the connecting duct 21 of pressure head 20 is formed, thus this piston rod 11 is connected to pressure head 20.Piston rod 11 is formed with reducing pipe portion 1103 in its lower end, and it is as a piston junction surface forming section, for forming the piston junction surface 15 engaged with piston 13.With reducing pipe portion 1103 direct neighbor be tapered type conical bench face 1104 towards reducing pipe portion 1103, this type conical bench face is provided by the annular relief on piston rod 11, for providing space for piston 13 towards the distortion of this side, type conical bench face 1104.Reducing pipe portion 1103 for forming piston junction surface 15 can to have the diameter-increasing portion 1108 that one section of diameter expands slightly in the junction with type conical bench face 1104.Piston rod 11 is formed with a convex shoulder 1102 on its outer peripheral face, and this convex shoulder is used for matching with the appropriate section on integral type facing-cylinder cover 40, to help to limit the pressing stroke top dead center position of pressure head 20 relative to integral type facing-cylinder cover 40.
The guide rod 123 that piston head 12 comprises base 121 and upwards extends from this base, this guide rod 123 inserts and is fixed in the guide rod receiving opening 1105 that piston rod 11 lower end formed, and this guide rod receiving opening forms a part for fluid passage 14.Guide rod 123 is circumferentially formed with annular notches 126 on its outer peripheral face, and this annular notches and the respective annular formed in the guide rod receiving opening 1105 of piston rod 11 rib 1106 of dashing forward matches, to help fixing in guide rod receiving opening 1105 of guide rod 123.The upper end of base 121 is formed with columniform undergauge boss portion 122, and it is as another piston junction surface forming section.The diameter of this undergauge boss portion is greater than the diameter of guide rod 123, and identical with the diameter in the reducing pipe portion 1103 on piston rod 11.Therefore, when piston head 12 is assemblied in piston rod 11, the reducing pipe portion 1103 of piston rod 11 abuts against each other with the undergauge boss portion 122 of piston head 12 and jointly forms piston junction surface 15.
The guide rod 123 of piston head 12 is formed with diametrically two respect to one another (can certainly be one or other suitable quantity) longitudinal flutings 124 along its longitudinal length, and this longitudinal fluting constitutes vertical passage in guide rod receiving opening 1105.Corresponding position in undergauge boss portion 122 is also formed with the interconnection 125 of respective numbers, this interconnection 125 extends to from the outer peripheral face radial inward of undergauge boss portion 122 and is communicated with longitudinal fluting 124, thus longitudinal fluting 124 provides the path from interconnection 125 to fluid passage 14.This interconnection 125 forms one with the longitudinal fluting 124 in guide rod 123 and does not have obvious border, so that mould process.Base 121 provides one perpendicular to the steep step surface 127 of longitudinal direction in the junction with undergauge boss portion 122, for the distortion of limited piston 13 towards this steep step surface 127 side.
Piston 13 comprises the body that is the cylindrical shape of both ends open substantially.This body is formed with the circular inner ledge 131 of radial inward projection at its upper end, and this circular inner ledge forms an inner peripheral surface, for sealing interconnection 125 openably on the outer peripheral face being engaged in piston junction surface 15.This body is formed in its lower end slidably against the sealing edge 132 of the sidewall of cylinder 30, sealing edge be body along with expanding outwardly gradually to downward-extension and the ora terminalis of thinning bottom.Its periphery of the upper end edge being formed with circular inner ledge 131 of this body is formed with an annular and lacks 133, the setting of this annular breach suitably can reduce the rigidity at this position, make this position originally become large rigidity because arranging circular inner ledge 131 can suitably reduce, thus improve the deformation performance of piston 13.Certainly, not there is the conventional piston (such as in the background section commented those) that this annular lacks 133 can be applied in equally in piston component of the present invention.
Lower mask body illustrates the work of liquor pump of the present invention with reference to Fig. 3 a and 3b.Liquor pump of the present invention by the upper end 33 of cylinder 30 is sticked in integral type facing-cylinder cover 40 inner ring 42 on and install, this integral type facing-cylinder cover 40 and then be installed to again on the container (not shown) of liquid product.When liquor pump remains static that is pressure head 20 is not pressed, as shown in fig. 3a, pressure head 20 is in pressing stroke top dead center position relative to integral type facing-cylinder cover 40, and piston component 10 is positioned at its extreme higher position.Now, the convex shoulder 1102 of piston rod 11 is resisted against on corresponding shoulder that integral type facing-cylinder cover 40 is formed, and the upper surface of the annular breach 133 of piston 13 by the inner ring 42 of integral type facing-cylinder cover 40 lower surface against.In this position, the balancing air holes 32 formed in the sidewall of cylinder 30 is positioned at the top against point of the below against point of piston 13 and inner ring 42, piston 13 and cylinder 30, is namely enclosed in these two against between point.Therefore, can prevent the liquid in container from entering cylinder 30 by this balancing air holes 32 and then leaking out container.Piston 13 keeps being bonded on the outer peripheral face at piston junction surface 15 of piston component 10, thus the interconnection 125 at closed piston junction surface 15, prevent the liquid in reservoir 31 by the longitudinal fluting 124 of this interconnection 125 and guide rod 123 and then flow to external container by fluid passage 14.
When pressing pressure head 20 downwards when the upwards elastic force overcoming spring 50, as shown in figure 3b, piston component 10 moves downward under the drive of pressure head 20.On the sidewall that the sealing edge 132 of piston 13 is resisted against cylinder 30 and slide downward.Because the downward drive force of the circular inner ledge 131 of piston rod 11 and piston junction surface 115 pairs of pistons 13 and cylinder 30 sidewall are to the compound action of the upwards friction force of the sealing edge 132 of piston 13, and the deformation space provided for piston 13 due to the type conical bench face 1104 of piston rod 11, cause piston 13 to deform towards side, type conical bench face 1104 that is piston rod 11 side.This distortion causes the circular inner ledge 131 of piston 13 to depart from piston junction surface 115, thus cause the sealing of piston 13 pairs of interconnections 125 to be opened, thus allow the liquid in reservoir 31 under the downward pump function of piston component 10, to pass through interconnection 125, depression 124 and fluid passage 14 to pumping outside container.Now, lower check valve ball 60 keeps because of the pump pressure in cylinder 30 closing, and prevents the liquid in reservoir 31 from flowing out downwards.
Afterwards, when removing the downward pressure on pressure head 20, piston component 10 under the power that the upsprings effect of spring 50 relative to cylinder 30 upward movement.Now, because the steep end face 127 of piston head 12 is not for piston 13 provides the space to the distortion of piston head 12 side, thus piston 13 substantially can not produce distortion and makes the circular inner ledge 131 of piston 13 depart from piston junction surface 15 and open the sealing to interconnection 125, like this, reservoir 31 was cut off with being communicated with between external container.Due to the upward movement of piston component 10, produce negative pressure in the reservoir 31 of cylinder 30, this negative pressure makes lower check valve ball 60 open, and the liquid in container is sucked reservoir 31, for next pumping.
Lower mask body illustrates the above production with reference to the piston component described by Fig. 3-6 of the present invention with reference to Fig. 7 and 8.First, piston rod 11, piston head 12 and piston 13 is formed respectively by being molded.Then, piston 13 cover is set on the guide rod 123 of piston head 12, undergauge boss portion 122 is entered or part enters the central circular through hole of circular inner ledge 131.Afterwards, inserting piston head 12 through the guide rod 123 of the central circular through hole of piston and being fixed in the guide rod receiving opening 1105 of piston rod 11, now, the central circular through hole of piston 13 is just set on the outer peripheral face in the undergauge boss portion 122 of piston head 11 and the reducing pipe portion 1103 of piston rod 11 simultaneously.The piston component assembled as shown in Figure 8.
Described above is for the production of the method for the piston component (wherein piston junction surface is provided by piston rod and piston head) of Fig. 3-6 illustrated embodiment simultaneously, wherein piston bush is located on piston head, and then piston head is assembled on piston rod.But be appreciated that and also can select piston bush to be established on the piston rod (because piston rod at least has piston junction surface forming section for receiving piston), and then piston head is assembled on piston rod.In a word, as long as piston rod or piston head have the part for receiving piston, no matter piston junction surface is provided by piston rod and piston head simultaneously or is only provided by piston rod and piston head, piston can be selected first to be set on this piston rod or piston head, and then piston head or piston rod are assembled on this piston rod or piston head.
Describe one embodiment of the present of invention with reference to Fig. 3-8 above, wherein piston junction surface 15 is provided by piston rod 11 and piston head 12 simultaneously.But according to the present invention, piston junction surface also can only be provided by piston rod and piston head.
Fig. 9-10 shows an alternative embodiment of the invention, and wherein piston junction surface is only provided by piston rod.In this embodiment, piston rod is identical with the embodiment of Fig. 4-5 with the structure major part of piston head, therefore, have employed the additional single quotation marks of identical Reference numeral and carrys out part like representation class.Compared with the embodiment of Fig. 4-5, difference is only, in the present embodiment, piston head 12 ' is not provided with undergauge boss portion 122 on its base 121 ', and piston rod 11 ' has full-scale reducing pipe portion 1103 ' in its lower end, like this, piston junction surface 15 is just individually made up of the reducing pipe portion 1103 ' be arranged on piston rod 11 ', but not is combined by the undergauge boss portion 122 on piston head 12 and the reducing pipe portion 1103 on piston rod 11 the embodiment resembling Fig. 4-5 and form.Reducing pipe portion 1103 ' be formed in its lower end two diametrically respect to one another, run through the interconnection 1110 extending to inner peripheral surface from the outer peripheral face radial inward in reducing pipe portion 1103 '.It is basically identical that the width of this interconnection 1110 can be made into the longitudinal fluting 124 ' on piston head 12 '.When piston head 12 ' is assemblied in piston rod 11 ', the lower end abutment in the reducing pipe portion 1103 ' of piston rod 11 ' in the upside of the base 121 ' of piston head 12 ', and makes two interconnections 1110 substantially align with two longitudinal flutings 124 ' thus interconnection 1110 and longitudinal fluting 124 ' are communicated with each other.Like this, shown in the structure of the piston component assembled and Fig. 8 is basically identical.
Figure 11-12 shows another embodiment of the present invention, and wherein piston junction surface is only provided by piston rod.In this embodiment, piston rod is identical with the embodiment of Fig. 4-5 with the structure major part of piston head, therefore, have employed the additional double quotation marks of identical Reference numeral and carrys out part like representation class.Compared with the embodiment of Fig. 4-5, difference is only, in the present embodiment, piston rod 11 " be not provided with reducing pipe portion 1103 in its lower end; and piston head 11 " at its base 121 " upside be provided with full-scale undergauge boss portion 122 ", like this, piston junction surface 15 is just by being arranged on piston head 12 " on undergauge boss portion 122 " individually form, but not combined by the undergauge boss portion 122 on piston head 12 and the reducing pipe portion 1103 on piston rod 11 the embodiment resembling Fig. 4-5 and form.Undergauge boss portion 122 " in its underpart with guide rod 123 " longitudinal fluting 124 " position of substantially aliging is formed with interconnection 125 ", this interconnection 125 " from undergauge boss portion 122 " outer peripheral face radial inward extend to and longitudinal fluting 124 " communicate with each other.The width of this interconnection 1110 can be made into and the longitudinal fluting 124 on piston head 12 ' " basically identical.When piston head 12 " be assemblied in piston rod 11 " time, piston head 12 " undergauge boss portion 122 " upside be resisted against piston rod 11 " lower end, thus make undergauge boss portion 122 " with piston rod 11 " on type conical bench face 1104 " direct neighbor.Like this, shown in the structure of the piston component assembled and Fig. 8 is also basically identical.
In exemplary embodiment of the present invention described above, in order to the object of simplified characterization, many aspects of the present invention are combined and implements in the same embodiment, but it will be understood by those skilled in the art that these aspects of the present invention can carry out implementing and realizing object of the present invention respectively completely independently.Such as, in an illustrated embodiment, of the present invention have to provide respectively and the piston component of the piston rod be assemblied in together and piston head has included the piston with annular breach of the present invention, but both can carry out implementing to realize its corresponding usefulness completely in various embodiments.Certainly, those skilled in the art are also appreciated that and the technical scheme of these two aspects of the present invention are used in combination, and can obtain more significant technique effect.
In addition, in scope of the present invention, those skilled in the art can carry out various change to shown embodiment.Such as, in an illustrated embodiment, piston rod and piston head are configured to a part for piston head inserted and be matched with in a part for piston rod, but also piston rod and piston head can be configured to a part for piston rod inserted and be matched with in a part for piston head.Again such as, in an illustrated embodiment, in piston head, depression and the quantity of interconnection are respectively two, but also can select depression and the interconnection of one or other quantity.Again such as, in an illustrated embodiment, interconnection in piston junction surface is provided by the undergauge boss portion of piston head, but this interconnection also can only be provided by the reducing pipe portion of piston rod, or provided by the boss portion of piston head and the reducing pipe portion of piston rod simultaneously.Obviously, these changes above-mentioned all can not affect the realization of enforcement of the present invention and goal of the invention thereof.Therefore, protection scope of the present invention is not limited to described detailed description of the invention, and rationally should be limited by claims.
Claims (15)
1. one kind uses the liquor pump of elastic piston, for be arranged on container with by the liquid pumping in described container to described external container, described liquor pump comprises longitudinally-slidable the piston component be arranged in cylinder along described liquor pump, described cylinder is defined for the reservoir storing liquid wherein, and described piston component comprises:
Piston rod, its center is longitudinally run through and is formed with fluid passage;
Piston head, it is connected to the lower end of described piston rod;
Piston junction surface, it is made up of the reducing pipe portion of the lower end being formed in described piston rod, and be that constriction shape ground is between described piston rod and described piston head, described piston head is connected to described piston rod by described piston junction surface, described piston junction surface have be communicated with described fluid passage, radially run through the interconnection that described piston junction surface extends, thus for the liquid carrying in described reservoir is for the path pumping out described container; And
The piston be made up of elastomeric material, it is set on the described piston junction surface between described piston rod and described piston head, for closing described interconnection openably,
Described piston component is configured to: when described piston component keeps static relative to described cylinder, described piston remains on the engage position with described piston junction surface, thus close described interconnection, stop described reservoir to be communicated with described external container by described fluid passage; When described piston component moves downward relative to described cylinder, described piston produces distortion and departs from described engage position, thus opens the interconnection at described piston junction surface, allows described reservoir to be communicated with described external container by described fluid passage; When described piston component is relative to described cylinder upward movement, described piston remains on described engage position, thus closes described interconnection, stops described reservoir to be communicated with described external container by described fluid passage,
It is characterized in that, described piston rod and described piston head separately to provide and together with being assemblied in.
2. liquor pump as claimed in claim 1, it is characterized in that, the guide rod that described piston head comprises base and upwards extends from described base, described piston rod comprises the guide rod receiving opening being positioned at its lower end, described guide rod receiving opening is formed as a part for described fluid passage, described guide rod inserts and is matched with in described guide rod receiving opening and described piston head is assemblied in described piston rod
Described guide rod is formed with at least one longitudinal fluting along its longitudinal length, described longitudinal fluting forms vertical passage in described guide rod receiving opening, described piston junction surface is formed with the interconnection of respective numbers, described longitudinal fluting is communicated with to the corresponding described interconnection in described piston junction surface, thus described longitudinal fluting provide the path from described interconnection to described fluid passage.
3. liquor pump as claimed in claim 2, it is characterized in that, described reducing pipe portion limits a part for described guide rod receiving opening.
4. liquor pump as claimed in claim 2, it is characterized in that, described piston junction surface is only provided by described piston rod, wherein said piston rod is formed with columniform reducing pipe portion as described piston junction surface forming section in its lower end, described reducing pipe portion limits a part for described guide rod receiving opening, when described piston head is assemblied in described piston rod, described reducing pipe portion is resisted against the upper end of the described base of described piston head and forms described piston junction surface.
5. liquor pump as claimed in claim 2, it is characterized in that, described guide rod is formed with depressions or protrusions on its outer peripheral face, and described guide rod receiving opening side face is formed with the projection or depression that match within it, thus helps described piston head to be assemblied in described piston rod.
6. liquor pump as claimed in claim 1, it is characterized in that, described piston comprises the cardinal principle body cylindrically of both ends open, for the circular inner ledge that seals described interconnection openably and slidably against the sealing edge of the sidewall of described cylinder on outer peripheral face that described body is formed with radial inward projection, that be engaged in described piston junction surface.
7. liquor pump as claimed in claim 6, it is characterized in that, described circular inner ledge is formed in the upper end of described body, and described sealing edge be described body along with expanding outwardly gradually to downward-extension and the ora terminalis of thinning bottom.
8. liquor pump as claimed in claim 7, it is characterized in that, its periphery of the upper end edge being formed with described circular inner ledge of described body is formed with annular breach.
9. liquor pump as claimed in claim 8, it is characterized in that, described liquor pump also comprises integral type facing-cylinder cover and pressure head, described cylinder is connected to the downside of described integral type facing-cylinder cover, described pressure head is connected to the upper end of described piston rod, described pressure head is stamped a pressing stroke top dead center position and a pressing bottom of stroke position relative to described integral type facing-cylinder
Described integral type facing-cylinder cover has the outer ring and inner ring that vertically extend, described outer ring is used for engaging with the open neck of described container and described liquor pump being installed on described container, described inner ring engages with the upper end of described cylinder and makes described cylinder be connected to the downside of described integral type facing-cylinder cover and form the cylinder closed, when described pressure head is in described pressing stroke top dead center position relative to described integral type facing-cylinder cover, the lower end of described inner ring is engaged in the described annular breach of described piston.
10. liquor pump as claimed in claim 9, it is characterized in that, described cylinder is formed with the balancing air holes for balancing described container external and internal pressure on its sidewall, when described pressure head is in described pressing stroke top dead center position relative to described integral type facing-cylinder cover, described balancing air holes is positioned at the sealing edge of described piston and the top against point of described cylinder side wall, and is positioned at the described inner ring of described integral type facing-cylinder cover and the below against point of described piston.
11. liquor pumps as claimed in claim 1, it is characterized in that, described piston rod has in the junction with described piston junction surface towards tapered type conical bench face, described piston junction surface, and described piston head has the steep step surface perpendicular to longitudinal direction in the junction with described piston junction surface, described type conical bench face provides deformation space for described piston.
12. liquor pumps as claimed in claim 11, it is characterized in that, described piston junction surface has diameter-increasing portion in the junction with described type conical bench face.
13. 1 kinds of methods for the production of piston component, described piston component be in the liquor pump as described in any one of claim 1-12 the piston component that uses, described method comprises:
Be molded dividually and described piston rod, described piston head and described piston are provided;
Described piston bush is located on described piston rod;
Together with being assemblied in described piston head by described piston rod, described piston is set on described piston junction surface between described piston rod and described piston head.
14. 1 kinds of piston components for liquor pump, described liquor pump for be arranged on container with by the liquid pumping in described container to described external container, described liquor pump comprises longitudinally-slidable the piston component be arranged in cylinder along described liquor pump, described cylinder is defined for the reservoir storing liquid wherein, and described piston component comprises:
Piston rod, its center is longitudinally run through and is formed with fluid passage;
Piston head, it is connected to the lower end of described piston rod;
Piston junction surface, it is made up of the reducing pipe portion of the lower end being formed in described piston rod, and be that constriction shape ground is between described piston rod and described piston head, described piston head is connected to described piston rod by described piston junction surface, described piston junction surface have be communicated with described fluid passage, radially run through the interconnection that described piston junction surface extends, thus for the liquid carrying in described reservoir is for the path pumping out described container; And
The piston be made up of elastomeric material, it is set on the described piston junction surface between described piston rod and described piston head, for closing described interconnection openably,
Described piston component is configured to: when described piston component keeps static relative to described cylinder, described piston remains on the engage position with described piston junction surface, thus close described interconnection, stop described reservoir to be communicated with described external container by described fluid passage; When described piston component moves downward relative to described cylinder, described piston produces distortion and departs from described engage position, thus opens the interconnection at described piston junction surface, allows described reservoir to be communicated with described external container by described fluid passage; When described piston component is relative to described cylinder upward movement, described piston remains on described engage position, thus closes described interconnection, stops described reservoir to be communicated with described external container by described fluid passage,
It is characterized in that, described piston comprises the body of the cylindrical shape substantially in both ends open, described body is formed with the circular inner ledge of radial inward projection at its upper end, on the outer peripheral face that described circular inner ledge is engaged in described piston junction surface and for sealing described interconnection openably, described body is formed in its lower end slidably against the sealing edge of the sidewall of described cylinder, described sealing edge be described body along with expanding outwardly gradually to downward-extension and the ora terminalis of thinning bottom, its periphery of the upper end edge being formed with described circular inner ledge of described body is formed with annular breach.
15. as claimed in claim 14 for the piston component of liquor pump, and it is characterized in that, the longitudinal thickness of described circular inner ledge is greater than the radial wall thickness of described body.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266248.9A CN102991839B (en) | 2011-09-08 | 2011-09-08 | Use the liquor pump of elastic piston, piston component and production method thereof |
| PCT/CN2012/079759 WO2013034038A1 (en) | 2011-09-08 | 2012-08-07 | Liquid pump using elastomeric piston, piston assembly and manufacturing method thereof |
| US14/342,672 US20140314600A1 (en) | 2011-09-08 | 2012-08-07 | Liquid pump using elastomeric piston, piston assembly and manufacturing method thereof |
| DE201211003754 DE112012003754T8 (en) | 2011-09-08 | 2012-08-07 | Fluid pump using an elastomeric piston, piston assembly and method of making same |
| KR20147007689A KR20140075690A (en) | 2011-09-08 | 2012-08-07 | Liquid pump using elastomeric piston, piston assembly and manufacturing method thereof |
| JP2014528836A JP5996652B2 (en) | 2011-09-08 | 2012-08-07 | Liquid pump using elastomer piston, piston assembly and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110266248.9A CN102991839B (en) | 2011-09-08 | 2011-09-08 | Use the liquor pump of elastic piston, piston component and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102991839A CN102991839A (en) | 2013-03-27 |
| CN102991839B true CN102991839B (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110266248.9A Active CN102991839B (en) | 2011-09-08 | 2011-09-08 | Use the liquor pump of elastic piston, piston component and production method thereof |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140314600A1 (en) |
| JP (1) | JP5996652B2 (en) |
| KR (1) | KR20140075690A (en) |
| CN (1) | CN102991839B (en) |
| DE (1) | DE112012003754T8 (en) |
| WO (1) | WO2013034038A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10226782B2 (en) * | 2013-11-29 | 2019-03-12 | Daizo Corporation | Content-accommodating container, content-accommodating product using same, discharge product, and discharge device |
| KR101544465B1 (en) | 2014-03-18 | 2015-08-17 | (주)아모레퍼시픽 | A Cosmetic Pumping Unit Operated Soft Feel |
| CN103879653B (en) * | 2014-03-28 | 2017-01-04 | 丁要武 | Anti-loose emulsion pumps |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20140075690A (en) | 2014-06-19 |
| WO2013034038A1 (en) | 2013-03-14 |
| JP5996652B2 (en) | 2016-09-21 |
| JP2014531369A (en) | 2014-11-27 |
| US20140314600A1 (en) | 2014-10-23 |
| CN102991839A (en) | 2013-03-27 |
| DE112012003754T5 (en) | 2014-10-09 |
| DE112012003754T8 (en) | 2014-12-04 |
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Effective date of registration: 20170512 Address after: 225400 Taixing, Jiangsu province Jiang Ping Road North, No. 55 Patentee after: Taixing K.K. Plastic Co., Ltd. Address before: 225400 No. 55 Ping Jiang north road, Jiangsu, Taizhou Patentee before: Ding Yaowu |
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