CN110745368B - Pumping assembly for liquid dispensing device and liquid dispensing device - Google Patents
Pumping assembly for liquid dispensing device and liquid dispensing device Download PDFInfo
- Publication number
- CN110745368B CN110745368B CN201911114665.4A CN201911114665A CN110745368B CN 110745368 B CN110745368 B CN 110745368B CN 201911114665 A CN201911114665 A CN 201911114665A CN 110745368 B CN110745368 B CN 110745368B
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- Prior art keywords
- circumferential wall
- pumping assembly
- liquid
- wall
- dispensing device
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- 239000007788 liquid Substances 0.000 title claims abstract description 205
- 238000005086 pumping Methods 0.000 title claims abstract description 102
- 238000003825 pressing Methods 0.000 claims abstract description 48
- 238000006073 displacement reaction Methods 0.000 claims abstract description 42
- 230000002093 peripheral effect Effects 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 238000009826 distribution Methods 0.000 description 8
- 239000002537 cosmetic Substances 0.000 description 7
- 239000011324 bead Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
Landscapes
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Reciprocating Pumps (AREA)
Abstract
本发明提供了一种用于液体分配装置的泵送组件，该泵送组件包括：基座，在基座的底部设置有与待分配的液体连通的液体入口；泵芯，其设置在基座内的底部，并且与基座沿着轴向方向具有第一相对位移，泵芯通过运动选择性地封闭液体入口；往复运动部件，其设置在基座内，与泵芯形成体积可变的密封空腔，往复运动部件与基座沿着轴向方向具有第二相对位移，第二相对位移大于第一相对位移，在往复运动部件的顶端部设置有液体出口；单向阀，其设置在泵芯与往复运动部件之间，单向阀与往复运动部件沿着轴向方向具有第三相对位移，并且与基座沿着轴向方向具有第四相对位移，第四相对位移大于第三相对位移，单向阀通过运动能够选择性地密封液体出口；以及按压部件，其能够对往复运动部件和单向阀进行按压操作。
The present invention provides a pumping assembly for a liquid dispensing device, the pumping assembly comprising: a base, a liquid inlet connected to the liquid to be dispensed is arranged at the bottom of the base; a pump core, which is arranged at the bottom of the base and has a first relative displacement with the base along the axial direction, and the pump core selectively closes the liquid inlet by movement; a reciprocating component, which is arranged in the base and forms a sealed cavity with a variable volume with the pump core, the reciprocating component and the base have a second relative displacement along the axial direction, the second relative displacement is greater than the first relative displacement, and a liquid outlet is arranged at the top end of the reciprocating component; a one-way valve, which is arranged between the pump core and the reciprocating component, the one-way valve and the reciprocating component have a third relative displacement along the axial direction, and have a fourth relative displacement with the base along the axial direction, the fourth relative displacement is greater than the third relative displacement, and the one-way valve can selectively seal the liquid outlet by movement; and a pressing component, which can press the reciprocating component and the one-way valve.
Description
Technical Field
The present invention relates to devices for conducting away liquid, and more particularly to a dispensing pump for a liquid dispensing device and a dispensing device comprising such a dispensing pump.
Background
With the continuous improvement of living standard, people pay attention to the image of themselves, so that the makeup is becoming popular, and people even consider the makeup to be a respecting and etiquette action for friends or guests about to meet, so that the makeup is more and more paid attention to and welcomed by the masses.
At present, cosmetics, particularly liquid cosmetics, are sometimes applied to the face of a human body by dipping the cosmetics through a sponge and then homogenizing, and the cosmetics are wasted in the way. In addition, the used sponge is generally placed in an atmospheric environment, resulting in easy solidification and contamination of cosmetics adsorbed on the sponge. The liquid cosmetics still realize the distribution of liquid through pushing the push rod, but this kind of mode operation through pushing the push rod realizes liquid distribution troublesome, often needs the user to operate simultaneously with two hands for the user is difficult to look over the makeup state of current user, can't adjust its makeup state in time because of the shielding of arm, and consequently the use is loaded down with trivial details and complicated.
A wide variety of packages including containers and their dispensing systems for household items, care cosmetics, and other items have been widely used and developed. There is also a continuing need for improvements in the dispensing devices employed in such packages and their dispensing systems to make them more convenient and user friendly. Under the condition that the pumping assembly is abnormal in operation easily in the using process of the existing liquid distribution container, the pumping assembly is clamped and cannot pump liquid, under the condition that liquid cannot be pumped normally due to inaccurate matching among parts, and under the condition that liquid is pumped unevenly due to overlarge gaps among the parts.
Accordingly, there is a need in the art to provide a pumping assembly and associated liquid dispensing device that is relatively stable in dispensing, relatively strong in construction, and less prone to damage.
Disclosure of Invention
To solve at least one of the above technical problems, an embodiment of the present invention provides a pumping assembly for a liquid dispensing device, the pumping assembly comprising:
A base, a liquid inlet communicated with liquid to be distributed is arranged at the bottom of the base;
a pump core disposed at a bottom portion within the base and having a first relative displacement with the base along an axial direction, the pump core selectively closing the liquid inlet by movement;
the reciprocating part is arranged in the base and forms a sealed cavity with the pump core, the reciprocating part and the base are provided with second relative displacement along the axial direction, the second relative displacement is larger than the first relative displacement, and the top end part of the reciprocating part is provided with a liquid outlet;
A check valve disposed between the pump core and the reciprocating member, the check valve and the reciprocating member having a third relative displacement in an axial direction and a fourth relative displacement in the axial direction with the base, the fourth relative displacement being greater than the third relative displacement, the check valve being capable of selectively sealing the liquid outlet by movement, and
And a pressing member capable of performing a pressing operation on the reciprocating member and the check valve.
According to a preferred embodiment of the pumping assembly for a liquid dispensing device according to the invention, the base comprises a first circumferential wall arranged around the liquid inlet, a second circumferential wall arranged outside the first circumferential wall, and a housing wall arranged outside the second circumferential wall, the first circumferential wall being adapted to guide the movement of the pump core for selectively sealing the liquid inlet.
In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the invention, the pump core comprises an inner circumferential wall forming a channel through which the liquid to be dispensed flows and an outer circumferential wall arranged outside the inner circumferential wall, the inner and outer circumferential walls being connected by a top wall.
According to yet another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, a sealing block for sealing the liquid inlet is formed at the bottom end of the interior of the inner peripheral wall of the pump core.
In a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the invention, at the lower end of the through-hole formed by the inner surface of the inner peripheral wall, at least one bead extending centrally from the inner surface is provided, at the end of which bead a sealing block is provided.
According to a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the reciprocating member comprises a central circumferential wall forming the liquid outlet, a first circumferential wall located below the central circumferential wall and having a larger diameter than the central circumferential wall, and a second circumferential wall located below the first circumferential wall and having a larger diameter than the first circumferential wall, the central circumferential wall being connected to the first circumferential wall by a first annular wall, the first circumferential wall being connected to the second circumferential wall by a second annular wall.
In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the reciprocating member further comprises a third circumferential wall arranged between the first circumferential wall and the central circumferential wall, the third circumferential wall extending downwardly from the first annular wall.
According to yet another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, the pumping assembly further comprises a spring disposed between the reciprocating member and the base.
In a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the invention, the pumping assembly further comprises a spring arranged around the third circumferential wall between the reciprocating member and the base, the base comprising a spring support, the spring being arranged between the first annular wall of the reciprocating member and the spring support.
According to a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the pumping assembly comprises a first stop member limiting the distance of movement of the pump core upwards.
In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the first stop member comprises a first stop protrusion provided on the pump core and a second stop protrusion provided on the base.
According to yet another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the pump core comprises a sliding thrust portion provided on the outer circumferential wall, the sliding thrust portion being in frictional contact with the third circumferential wall.
In a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the lower end of the valve stem of the one-way valve is received in a channel formed by the inner peripheral wall of the pump cartridge and is interference fit with the inner surface of the inner peripheral wall to enable movement or relative movement of the one-way valve and the pump cartridge together.
According to a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the pumping assembly comprises a limiting portion for limiting the stroke of the reciprocating member, the limiting portion comprising a lower stroke limiting portion provided at the bottom of the base, an upper stroke limiting portion provided on the housing wall of the base, and a protruding portion provided on the reciprocating member.
In another preferred embodiment of the pumping assembly for a liquid dispensing device according to the present invention, the pressing member includes a first side peripheral wall interference-fitted outside the central peripheral wall of the reciprocating member, a second side peripheral wall interference-fitted outside the first peripheral wall of the reciprocating member, and a pressing top wall provided at the top ends of the first side peripheral wall and the second side peripheral wall.
According to yet another preferred embodiment of the pumping assembly for a liquid dispensing device of the present invention, the pressing top wall is arranged such that an inner wall surface of the pressing top wall is at a predetermined distance from the top of the one-way valve when the one-way valve seals the liquid outlet.
In a further preferred embodiment of the pumping assembly for a liquid dispensing device according to the invention, the peripheral wall of the base is provided with a mating structure for sealing engagement with a liquid-containing container.
The present invention also provides a liquid dispensing device comprising a container for holding a liquid to be dispensed, a sliding seal member disposed within the container, a pumping assembly disposed at an opening of the container, and a housing disposed external to the container and the pumping assembly, wherein the pumping assembly is any pumping assembly as described above.
Compared with the prior art, the invention has at least one of the following beneficial effects:
(1) The invention provides a pumping assembly for a liquid dispensing device, which is exquisite in design, can realize continuous dispensing of liquid to be dispensed, and ensures consistency and uniformity of liquid dispensed each time.
(2) The pumping assembly according to the present invention achieves vacuum preservation of the internal liquid by providing a sliding sealing member at the bottom of the liquid container and by reasonable control of the liquid inlet and liquid outlet, thereby allowing a longer shelf life of the liquid.
(3) The invention also provides a corresponding sealing structure outside the base of the pumping assembly, so that the pumping assembly can be sealed and firmly jointed with the container for containing liquid, the sealing performance of the corresponding liquid distribution device is ensured, and the liquid distribution device has a firmer structure, thereby prolonging the life cycle and saving social resources.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, which provide a thorough understanding of the present invention.
FIG. 1 is a perspective view of a pumping assembly for a liquid dispensing device in accordance with the present invention;
FIG. 2 is an exploded isometric view of a pumping assembly for a liquid dispensing device in accordance with the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a cross-sectional view taken along line B-B in FIG. 1;
FIG. 5 is an exploded perspective view of a liquid dispensing device according to the present invention;
FIG. 6 is a partial cross-sectional view of a liquid dispensing device according to the present invention in a first state;
FIG. 7 is a partial cross-sectional view of the liquid dispensing device in a second state according to the present invention;
FIG. 8 is a partial cross-sectional view of the liquid dispensing device in a third state according to the present invention;
Fig. 9 is a partial cross-sectional view of a liquid dispensing device according to the present invention in a fourth state.
It should be noted that the drawings are not necessarily to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are one embodiment, but not all embodiments, of the present invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
According to a preferred embodiment of the present invention, there is provided a pumping assembly 10 for a liquid dispensing device, as shown in fig. 1, the pumping assembly 10 having a firm structure through its elaborate structural design, enabling the individual parts thereof to maintain a close mating relationship during use, thereby ensuring uniformity of liquid dispensing, and also enabling the pumping assembly 10 to have a firm structure, thereby greatly extending the life cycle of the pumping assembly 10.
The pumping assembly 10 according to the present invention mainly comprises components such as a base 12, a pumping core 14, a reciprocating member 16, a check valve 18, and a pressing member 20, wherein the base 12 is used to support the entire pumping assembly 10 and form protection for the respective components therein, and the pumping core 14, the reciprocating member 16, the check valve 18, and the pressing member 20 are disposed in the base 12 and cooperate with each other to form a variable liquid receiving chamber, thereby completing suction and discharge of liquid. The specific structure of each component will be described in detail below with reference to the drawings.
As a housing and support member for the pumping assembly 10, the base 12 may be provided in a cylindrical configuration with a liquid inlet 122 at the bottom of the base 12 in fluid communication with the liquid to be dispensed. The pump core 14 of the pumping assembly 10 is arranged at the bottom inside the base 12 and has a first relative displacement with the base 12 in the axial direction, the pump core 14 selectively closing the liquid inlet 122 by a movement relative to said base 12. Here, the axial direction refers to a direction parallel to the movement direction of the pressing member 20, i.e., a vertical direction when the pumping assembly 10 according to the present invention is in an upright position. That is, when it is desired to suck the liquid from the container located under the base 12, the pumping core 14 may be controlled to move upward so that the liquid inlet 122 is opened to allow the liquid to be sucked, and when it is desired that the pumping assembly 10 pumps the liquid to the outside, it is desired to control the pumping core 14 to move downward so as to seal the liquid inlet 122 to prevent the liquid from flowing back into the liquid container.
The reciprocating member 16, which is a power member of the pumping assembly 10, is disposed in the base 12 to form a sealed cavity with a variable volume with the pump core 14, and distributes the liquid in a state where the sealed cavity is enlarged by sucking the liquid to be distributed into the sealed cavity and in a state where the sealed cavity is reduced in volume. The reciprocating member 16 has a second relative displacement with the base 12 in the axial direction, the second relative displacement being larger than the first relative displacement, and the tip end portion of the reciprocating member 16 is provided with a liquid outlet 162. The first relative displacement of the pump core 14 relative to the base 12, which may be the sealing or unsealing of the liquid inlet 122 by the pump core 14, may be small, such as 0.6mm (although other distance values may be used). While a second relative displacement of the reciprocating member 16 and the base 12 may cause the sealed cavity between the pump core 14 and the reciprocating member 16 to become larger or smaller. Here, the up-and-down movement of the pump core 14 is achieved by the force of the reciprocating member 16, and thus the relative displacement of the reciprocating member 16 and the pump core 14 is the difference between the second relative displacement and the first relative displacement.
The check valve 18 and the reciprocating member 16 have a third relative displacement in the axial direction, the check valve 18 and the base 12 have a fourth relative displacement in the axial direction, the fourth relative displacement being greater than the third relative displacement, the check valve 18 being capable of selectively sealing the liquid outlet 162 by movement. The movement of the check valve 18 relative to the base 12 is similar to the movement of the pump cartridge 14 relative to the base 12, and the relative movement between the check valve 18 and the reciprocating member 16 can seal or unseal the liquid outlet 162 at the top end of the reciprocating member 16. The valve body 182 of the check valve 18 is adapted to cooperate with the liquid outlet 162 to open or close the liquid outlet 162, and the lower end of the valve stem 184 of the check valve 18 is inserted into the cartridge 14 and there is an interference fit with the cartridge 14 to provide friction between the valve stem 184 and the cartridge 14. Here, the valve stem 184 may take a cross-shaped configuration with gaps between the cross-shaped configuration for the passage of liquid. Of course, other shapes of the valve stem 184 may be used herein, such as a rice shape, a hollow cylinder, a polygon, etc. The third relative displacement of the one-way valve 18 with respect to the reciprocating member 16 is relatively small, such as 0.4mm, and is only used to open or close the liquid outlet 162, and after a relative displacement of the one-way valve 18 of 0.4mm with respect to the reciprocating member 16, the two are relatively stationary, i.e. together move with respect to the base 12.
The pressing member 20 is provided at an upper portion of the reciprocating member 16 for directly operating the reciprocating member 16, and the reciprocating member 16 can directly operate the check valve 18, that is, the pressing member 20 can respectively press the reciprocating member 16 and the check valve 18.
The structure of the various components of the pumping assembly 10 according to the present invention will be described below. First, the base 12 will be described, the base 12 having a cylindrical structure including a first circumferential wall 124 provided around the liquid inlet 122, a second circumferential wall 126 provided outside the first circumferential wall 124, and a housing wall 128, the housing wall 128 serving as a housing of the base 12. The first circumferential wall 124 is used to guide movement of the pump core 14 to selectively seal the pump core 14 from the liquid inlet 122. Two notches are symmetrically provided in the upper portion of the cylindrical structure of the housing wall 128 for providing a movement space for the pressing and bouncing process of the pressing member 20. The height of both the first circumferential wall 124 and the second circumferential wall 126 is less than the height of the housing wall 128. The liquid inlet 122 in the base 12 may be formed in such a manner that a bottom wall 1242 closing the inner hole of the first circumferential wall 124 is formed at the lower end of the inside of the first circumferential wall 124, and an upwardly protruding boss 1244 is formed on the center of the bottom wall 1242, the liquid inlet 122 being formed on the boss 1244, the liquid inlet 122 may be provided with a chamfer at the orifice so as to seal the liquid inlet 122 by the orifice having the chamfer.
The pump core 14 includes an inner peripheral wall 142 forming a passage through which a liquid to be dispensed flows, and an outer peripheral wall 144 provided outside the inner peripheral wall 142, the inner peripheral wall 142 and the outer peripheral wall 144 being connected by a top wall 146. A sealing block 148 for sealing the liquid inlet 122 is formed at the inner bottom end of the inner peripheral wall 142 of the pump core 14, and the sealing block 148 is fitted with an orifice of the liquid inlet 122 to perform sealing and opening operations of the liquid inlet 122. The seal block 148 may be formed in such a manner that at least one bead 1422 extending toward the center is provided from the inner surface of the inner peripheral wall 142 at the lower end of the through hole formed therein, and the seal block 148 is provided at the end of the bead 1422. Here, preferably, three or four ribs 1422 are provided, and the seal block 148 is supported on the inner surface of the inner peripheral wall 142 by the ribs 1422, and the lower end portion of the seal block 148 may be provided with a chamfer so as to be engaged with the liquid inlet 122 having the chamfer.
The reciprocating member 16 of the pumping assembly 10 may comprise a central circumferential wall 164 forming the liquid outlet 162, a first circumferential wall 166 located below the central circumferential wall 164 and having a larger diameter than the central circumferential wall 164, and a second circumferential wall 168 located below the first circumferential wall 166 and having a larger diameter than the first circumferential wall 166, the central circumferential wall 164 being connected to the first circumferential wall 166 by a first annular wall 165, the first circumferential wall 166 being connected to the second circumferential wall 168 by a second annular wall 167. That is, the reciprocating member 16 is formed in a circular stepped structure as seen from the outside, the largest diameter lowermost step is formed by the second circumferential wall 168, the intermediate step is formed by the first circumferential wall 166, and the uppermost step is formed by the central circumferential wall 164. An inner chamfer may be machined at the end of the central circumferential wall 164 that forms the liquid outlet 162, i.e., the liquid outlet 162 is formed in a frustoconical shape, thereby facilitating engagement with a corresponding sloped sealing surface of the valve body 182 of the check valve 18.
Further, the reciprocating member 16 further includes a third circumferential wall 169 disposed inside the first circumferential wall 166, the third circumferential wall 169 extending downwardly from the first annular wall 165. The third circumferential wall 169 is nested outside the outer circumferential wall 144 of the pump core 14 and is used to guide movement of the pump core 14, and the second circumferential wall 126 of the base 12 is nested outside the third circumferential wall 169 for restricting movement of the pump core 14. The pumping assembly 10 according to the present invention further includes a spring 15 disposed between the reciprocating member 16 and the base 12, the spring 15 providing a resilient force for the return movement of the reciprocating member 16. Here, the spring 15 is disposed around the outside of the third circumferential wall 169 while the spring 15 also surrounds the second circumferential wall 126 of the base 12, the lower portion of the spring 15 is supported on the spring supporting portion 130 formed on the bottom plate of the base 12, and the upper portion of the spring 15 may support the first annular wall 165 of the reciprocating member 16, that is, the spring 15 is disposed between the first annular wall 165 of the reciprocating member 16 and the spring supporting portion 130.
The pumping assembly 10 for a liquid dispensing device according to the present invention further includes a first limiting member that limits the upward distance of movement of the pump core 14. The first stop member includes a first stop tab 1442 provided on the pump core 14 and a second stop tab 1262 provided on the base 12. Here, preferably, the first limit projection 1442 is provided at the lower end portion of the outer circumferential wall 144 of the pump core 14, and the second limit projection 1262 is provided at the lower end portion of the second circumferential wall 126 of the base 12, so that the pump core 14 moves between a position where the lower end surface of the outer circumferential wall 144 contacts the bottom plate of the base 12 and a position where the first limit projection 1442 and the second limit projection 1262 are engaged with each other, so that the pump core 14 has a movement distance of about 0.6 mm. In order to prevent the first stopper projection 1442 from being disengaged beyond the second stopper projection 1262 when the pump core 14 receives a large upward force, a deformation-preventing circumferential wall 125 for preventing the end portion of the outer circumferential wall 144 from being deformed is provided on the bottom plate of the base 12, and the deformation-preventing circumferential wall 125 may have a height so as to cover the movement distance of the end portion of the outer circumferential wall 144 of the pump core 14, and as can be seen from fig. 3 and 4, the deformation-preventing circumferential wall 125 has a short height.
In addition, the pump core 14 further includes a sliding pushing portion 1444 provided on the outer peripheral wall 144, the sliding pushing portion 1444 being in frictional contact with the third peripheral wall 169 of the reciprocating member 16, whereby a force can be provided to the pump core 14 through the third peripheral wall 169 to move it downward, and the reciprocating member 16 can continue to move relative to the pump core 14 under a larger force when the pump core 14 moves to its lowest position.
The lower end of the valve stem 184 of the check valve 18 is received in a channel formed by the inner peripheral wall 142 of the cartridge 14 and is interference fit with the inner surface of the inner peripheral wall 142 to enable the cartridge 14 to resist movement of the check valve 18 so that the check valve 18 remains stationary as the reciprocating member 16 moves downwardly to open the liquid outlet 162 of the reciprocating member 16 when the displacement of the check valve 18 relative to the reciprocating member 16 is about 0.4mm. When the pressing member 20 continues to move downward, the pressing member 20 directly pushes the check valve 18 to move downward, overcoming the friction between the inner peripheral wall 142 of the pump core 14 and the valve stem 184 of the check valve 18, so that the check valve 18 continues to move downward with respect to the pump core 14, and the volume of the sealed cavity between the pump core 14 and the reciprocating member 16 becomes smaller.
The pumping assembly 10 according to the present invention further includes a limiter for limiting the travel of the reciprocating member 16, the limiter including a lower travel limiter 132 provided at the bottom of the base 12, an upper travel limiter 134 provided on the housing wall 128 of the base 12, and a protrusion 1682 provided on the reciprocating member 16, preferably the protrusion 1682 is provided outside the end of the second circumferential wall 168 of the reciprocating member 16. When the reciprocating member 16 moves downward such that the lower end surface of the second circumferential wall 168 comes into contact with the upper end surface of the lower stroke limiter 132, the reciprocating member 16 is blocked by the lower stroke limiter 132 to prevent further downward movement thereof, and when the reciprocating member 16 moves upward, the protrusion 1682 of the reciprocating member 16 comes into contact with the upper stroke limiter 134 on the housing wall 128 of the base 12 to thereby limit further upward movement of the reciprocating member 16, thereby limiting the movement stroke of the reciprocating member 16.
The check valve 18 of the pumping assembly 10 according to the present invention includes a valve body 182 for sealing or unsealing the liquid outlet 162 and a valve stem 184 disposed below the valve body 182 and exerting a force on the valve body 182 to move the valve body 182.
The pressing member 20 of the pumping assembly 10 according to the present invention includes a first side circumferential wall 202 sealingly fitted outside the central circumferential wall 164 of the reciprocating member 16, a second side circumferential wall 204 interference-fitted outside the first circumferential wall 166 of the reciprocating member 16, and a pressing top wall 206 provided at the tips of the first side circumferential wall 202 and the second side circumferential wall 204. The central circumferential wall 164 of the reciprocator 16 is in sealing engagement with the first side circumferential wall 202 of the pressing member 20 to form a sealed cavity therebetween to accommodate the discharged liquid when the liquid to be dispensed is discharged through the liquid outlet 162 of the reciprocator 16 and to discharge the liquid to the outside through a discharge passage provided in the pressing member 20. The pressing top wall 206 of the pressing member 20 is provided such that the inner wall surface of the pressing top wall 206 has a predetermined distance from the top of the check valve 18 when the check valve 18 seals the liquid outlet 162, so that the liquid outlet 162 can be opened, and the liquid outlet 162 is kept at a certain opening degree.
Further, on the housing wall 128 of the base 12, there is provided a fitting structure 1280 for sealing engagement with the liquid-containing vessel, the fitting structure 1280 may include at least one flange provided on the outside of the housing wall 128, and in the embodiment shown in fig. 3 and 4, there are provided three flanges, a first flange 1281 for engaging with the upper edge of the liquid-containing vessel and a second flange 1282 and a third flange 1283 for engaging with the inner wall of the vessel, where each of the above-mentioned single flanges is in sealing engagement with the vessel to ensure that the liquid is sealed within the vessel. In addition, a top cover 22, which is matched with the shapes of the pressing member 20 and the base 12, may be provided at the outer side of the pressing member 20 so that the pumping assembly 10 for a liquid dispensing device according to the present invention has a more beautiful and practical appearance.
The present invention also provides a liquid dispensing device 100, the liquid dispensing device 100 comprising a container 101 for storing a liquid to be dispensed, a sliding seal member 102 provided within the container 101, a pumping assembly provided at an opening of the container 101, and a housing 103 provided outside the container 101 and the pumping assembly, wherein the pumping assembly of the liquid dispensing device 100 is the pumping assembly 10 as described above.
The operation of the liquid dispensing device 100 according to the present invention will be described in detail with reference to fig. 6-9. As shown in fig. 6, a cross-sectional view of the liquid dispensing device 100 in a non-operating state is shown, wherein a bottom portion of the liquid dispensing device 100 is omitted. In this drawing, the liquid to be dispensed is stored in a closed cavity composed of the pumping assembly 10, the container 101, and the sliding seal member 102, and the closed cavity is placed in a vacuum state, thereby facilitating long-term storage of the liquid. The sliding seal member 102 may be a piston member that is sealingly attached to the inner wall surface of the container 101 and moves upward as the volume of liquid in the container 101 decreases, thereby ensuring that no air enters the container 101.
When the liquid dispensing apparatus 100 is in the non-operating state as shown in fig. 6, the reciprocating member 16 and the pressing member 20 are at the uppermost position under the elastic force of the spring 15, and at this time, the pump core 14 is also at the uppermost position, and the pump core 14 is restricted by the first restricting member and cannot continue to move upward. At this time, since there is an interference fit between the check valve 18 and the inner peripheral wall 142 of the pump cartridge 14, there is a downward pulling force of the pump cartridge 14 on the check valve 18, and the spring 15 applies an upward pushing force on the reciprocating member 16, so that the valve body 182 of the check valve 18 can seal the liquid outlet 162 of the reciprocating member 16, thereby isolating the interior of the liquid dispensing apparatus 100 from the outside air. With the pump core 14 in the uppermost position, the sealing block 148 of the pump core 14 is at a distance from the chamfer of the orifice of the liquid inlet 122, i.e. the sealing block 148 does not seal the liquid inlet 122, when the variable volume sealed cavity of the pumping assembly 10 is in communication with the interior of the container 101.
The state when the pressing member 20 is initially pressed will be described below with reference to fig. 7. At this time, the pressing member 20 is slightly pressed down, the reciprocating member 16 is pressed down by the pressing member 20, and since the sliding pushing portion 1444 provided on the outer circumferential wall 144 of the pump core 14 is in frictional contact with the third circumferential wall 169 of the reciprocating member 16, that is, the reciprocating member 16 can apply a downward frictional force to the pump core 14 through the third circumferential wall 169, which pushes the pump core 14 downward, and at the same time, since there is an interference fit between the pump core 14 and the check valve 18, the pump core 14 moves the check valve 18 downward together, so that the check valve 18 always seals the liquid outlet 162 in the process. When this downward movement displacement reaches about 0.6mm, i.e., the lowest end position of the pump core 14 is reached, the sealing block 148 of the pump core 14 seals the liquid inlet 122 and the pump core 14 stops moving.
The liquid discharge process shown in fig. 8 is entered as follows. Since there is substantially no change in the volume of the sealed cavity of the pumping assembly 10 during this process, there is substantially no change in the volume of liquid in the sealed cavity. Continuing to press the pressing member 20, the reciprocating member 16 continues to move downward, and as the pump cartridge 14 has reached its lowermost position, it cannot move further downward, and there is an interference force between the pump cartridge 14 and the check valve 18, the movement of the check valve 18 being prevented by the pump cartridge 14, at which time a relative movement occurs between the check valve 18 and the reciprocating member 16, the valve body 182 of the check valve 18 disengages from the liquid outlet 162 of the reciprocating member 16, thereby gradually opening the liquid outlet 162 to allow liquid to flow through the liquid outlet 162. When the top of the check valve 18 abuts against the lower surface of the pressing top wall 206 of the pressing member 20, at which time the total downward displacement of the pressing member 20 is about 1mm, the liquid outlet 162 is at the maximum open position, and then the check valve 18 moves downward together with the pressing member 20 and the reciprocating member 16 until the pressing member 20 and the reciprocating member 16 reach the lowermost position.
After the top of the check valve 18 abuts against the lower surface of the pressing top wall 206 of the pressing member 20, the pressing member 20 is continuously pressed, so that the interference force between the valve rod 184 of the check valve 18 and the inner peripheral wall 142 of the pump core 14 is overcome, and the check valve continues to move downward relative to the pump core 14, so that the volume of the variable-volume sealed space of the pumping assembly 10 is reduced, and the liquid is discharged from the sealed space to the outside. During this process, the liquid inlet 122 is always closed, while the liquid outlet 162 is always open. During the downward movement of the reciprocating member 16, the lower end surface of the second circumferential wall 168 of the reciprocating member 16 contacts the lower stroke limiter 132 provided at the bottom of the base 12, thereby limiting the reciprocating member 16 from continuing to move downward, at which time the total stroke of the reciprocating member 16 is about 5mm.
After the pressing member 20 is pressed to its lowermost position, a liquid suction process as shown in fig. 9 is entered. In this process, the operator releases the pressing member 20 and the reciprocating member 16 moves upward under the spring force provided by the spring 15. The reciprocating member 16 applies an upward frictional force to the pump core 14 through the third circumferential wall 169, which urges the pump core 14 upward, thereby causing the liquid inlet 122 at the bottom of the base 12 to be opened until the second stopper projection 1262 provided on the second circumferential wall 126 of the base 12 comes into contact with the first stopper projection 1442 provided at the lower end portion of the peripheral wall 144 of the pump core 14, at which time the pump core 14 is in the uppermost position and the liquid inlet 122 is in the maximum opening position. At this time, the pump core 14, the reciprocating member 16, and the check valve 18 are integrally moved upward by a distance of approximately 0.6mm. Subsequently, the check valve 18 is held temporarily stationary by the interference force provided by the inner peripheral wall 142 of the pump cartridge 14, and the reciprocating member 16 continues to move upward, and when the reciprocating member 16 moves upward by about 0.4mm, the valve body 182 of the check valve 18 seals the liquid outlet 162, and thereafter the check valve 18 is held in a sealed state with respect to the liquid outlet 162 by the interference force provided by the pump cartridge 4 to the check valve 18.
The reciprocating member 16 then continues to move upwardly under the force of the spring force and causes the one-way valve 18 to be subjected to an upward force greater than the interference force provided by the pump core 14 to which it is subjected, thereby causing the one-way valve 18 to move upwardly with the reciprocating member 16. In the process, the liquid inlet 122 is in a completely open state, while the liquid outlet 162 is in a completely closed state, and the volume of the sealed cavity of the pumping assembly 10, in which the volume is variable, becomes large, and a negative pressure is generated therein, thereby sucking the liquid stored in the container 101 into the sealed cavity through the liquid inlet 122. Eventually, the protrusion 1682 on the second circumferential wall 168 of the reciprocating member 16 abuts the upper travel limiter 134 formed in the housing wall 128 of the base 12, thereby allowing the reciprocating member 16 to reach its uppermost position, completing the entire liquid intake process. Of course, during the drawing of liquid from the container 101 into the sealed cavity of the pumping assembly 10, the internal air pressure of the sliding seal member 102 at the bottom of the container 101 becomes smaller, as compared to the external air pressure thereof is larger, thereby creating a pressure differential across the sliding seal member 102, causing it to gradually move upward, so as to ensure that the liquid in the container 101 is always in a vacuum state, preventing air from entering the container 101. The pressing member is repeatedly pressed in this way, so that continuous dispensing of the liquid can be realized.
The strokes of the various components described in the above embodiments are exemplary only, and the respective stop mechanisms may be positioned as desired to define the different strokes of the various components to correspondingly define the volume of the sealed cavity of pumping assembly 10, and thus the amount of fluid dispensed per compression of pumping assembly 10.
The invention provides a pumping assembly for a liquid dispensing device, which is exquisite in design, can realize continuous dispensing of liquid to be dispensed, and ensures consistency and uniformity of liquid dispensed each time. Furthermore, the pumping assembly according to the present invention achieves vacuum preservation of the internal liquid by providing a sliding sealing member at the bottom of the liquid container and by reasonable control of the liquid inlet and liquid outlet, thereby allowing a longer shelf life of the liquid. Further, the corresponding sealing structure is arranged outside the base of the pumping assembly, so that the pumping assembly can be sealed and firmly connected with the container for containing liquid, the sealing performance of the corresponding liquid distribution device is guaranteed, the liquid distribution device has a firmer structure, the life cycle of the liquid distribution device is prolonged, and social resources are saved.
It should also be noted that, in the embodiments of the present invention, the features of the embodiments of the present invention and the features of the embodiments of the present invention may be combined with each other to obtain new embodiments without conflict.
The present invention is not limited to the above embodiments, but the scope of the invention is defined by the claims.
Claims (18)
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| CN201911114665.4A CN110745368B (en) | 2019-11-14 | 2019-11-14 | Pumping assembly for liquid dispensing device and liquid dispensing device |
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| CN201911114665.4A CN110745368B (en) | 2019-11-14 | 2019-11-14 | Pumping assembly for liquid dispensing device and liquid dispensing device |
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| CN110745368B true CN110745368B (en) | 2025-04-08 |
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| CN101821014A (en) * | 2007-09-17 | 2010-09-01 | 雷克扎姆喷雾有限公司 | Foam dispensing assembly |
| WO2012074162A1 (en) * | 2010-12-03 | 2012-06-07 | (주)연우 | Dispenser container |
| CN212244510U (en) * | 2019-11-14 | 2020-12-29 | 西尔格定量泵（无锡）有限公司 | Pumping assembly for liquid dispensing device and liquid dispensing device |
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| US4189064A (en) * | 1978-06-01 | 1980-02-19 | Diamond International Corporation | Pumps sprayer |
| US5353969A (en) * | 1993-10-13 | 1994-10-11 | Calmar Inc. | Invertible pump sprayer having spiral vent path |
| US5503306A (en) * | 1994-10-19 | 1996-04-02 | Aptar Group, Inc. | Manually actuated pump |
| FR2731992B1 (en) * | 1995-03-21 | 1997-04-30 | Oreal | DISPENSER OF LIQUID OR PASTY PRODUCT FOR USE IN PARTICULAR IN COSMETICS |
| CA2445390A1 (en) * | 2001-05-29 | 2002-12-05 | The Procter & Gamble Company | Skin care kit |
| JP4701879B2 (en) * | 2005-07-05 | 2011-06-15 | 東洋製罐株式会社 | Pump dispenser, discharge valve mechanism, suction valve mechanism, and valve |
| KR101265949B1 (en) * | 2011-07-26 | 2013-05-21 | (주)연우 | Pumping type cosmetic case |
| US8360283B1 (en) * | 2011-08-17 | 2013-01-29 | Zhejiang JM Industry Co., Ltd | Liquid foaming pump |
| CN103121545A (en) * | 2013-01-28 | 2013-05-29 | 王雅灿 | Hose container and method of making the same |
| CN206969292U (en) * | 2017-07-24 | 2018-02-06 | 无锡圣马科技有限公司 | Spring overhead powder honey pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101821014A (en) * | 2007-09-17 | 2010-09-01 | 雷克扎姆喷雾有限公司 | Foam dispensing assembly |
| WO2012074162A1 (en) * | 2010-12-03 | 2012-06-07 | (주)연우 | Dispenser container |
| CN212244510U (en) * | 2019-11-14 | 2020-12-29 | 西尔格定量泵（无锡）有限公司 | Pumping assembly for liquid dispensing device and liquid dispensing device |
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Effective date of registration: 20200728 Address after: No.19 Xindu Road, Singapore Industrial Park, Wuxi, Jiangsu Applicant after: XIERGE CONSTANT DELIVERY PUMP (WUXI) Co.,Ltd. Address before: 215000 No.2, Tongsheng Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province Applicant before: Abbia packaging (Suzhou) Co.,Ltd. |
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