CN103964056A - Press type liquid pump - Google Patents
Press type liquid pump Download PDFInfo
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- CN103964056A CN103964056A CN201310039690.7A CN201310039690A CN103964056A CN 103964056 A CN103964056 A CN 103964056A CN 201310039690 A CN201310039690 A CN 201310039690A CN 103964056 A CN103964056 A CN 103964056A
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- reservoir
- check valve
- sleeve pipe
- outer peripheral
- liquor pump
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Abstract
The invention provides a press type liquid pump which comprises a pressing head, a liquid storage tank formed by an air cylinder, a piston assembly which is axially and glidingly arranged in the liquid storage tank and connected with the pressing head and can reciprocate up and down in the liquid storage tank, an elastic return device which is arranged in the liquid storage tank and is used for axially applying a bias pressure to the piston assembly, and a lower one-way valve which is arranged at the bottom of the liquid storage tank and is used for controlling the liquid storage tank to be unidirectionally communicated with the inside of a container, wherein the pressing head can be positioned in the position of a lock head relative to the air cylinder and is locked to the air cylinder in the position to prevent the piston assembly from reciprocating in the liquid storage tank. The liquid pump also comprises a seal mechanism used for preventing the liquid storage tank from being communicated with the lower one-way valve when the pressing head is in the position of the lock head. According to the liquid pump, a liquid product in the container can be effectively prevented from escaping from the lower one-way valve and making contact with easily oxidizable parts such as the elastic return device in the liquid storage tank before the liquid pump is used for the first time, and the product is prevented from being polluted by oxides in a storage process.
Description
Technical field
The present invention relates to liquor pump field, more particularly relate to a kind of push type liquor pump with elasticity reset device.
Background technology
Push type liquor pump is generally mounted in the opening part of container, for the Manual press operation by user, the liquid product pump pressure in container is distributed to container for use.This liquor pump has elasticity reset device conventionally, for remove user to pump bead press effect downwards after make this pressure head reply its home position, in pressure head reseting procedure, the liquid product in container is drawn in the reservoir of liquor pump simultaneously and distributes for next pump pressure.The push type liquor pump with elasticity reset device (being generally metal spring) in the market as shown in Figures 9 and 10, is that elasticity reset device 250 is arranged in reservoir 230 mostly.Be provided with this liquor pump product container transport or deposit in process (state as shown in Figure 9, now pressure head 210 is in being locked to the tapered end state of cylinder cover 221 of cylinder 220), container meets with possibly and puts upside down, pressurized or vibrations.If run into such situation, the liquid product in container is easy to can be through normally ball valve of lower check valve 260() enter in reservoir 230, thus cause the corrosion oxidation of elasticity reset device.The shelf-life of the liquid product of general cosmetics and articles for washing and so on was generally about 3 years, and this just requires the elasticity reset device can not be oxidated under by the long contact erosion of liquid product.But this is difficult to obtain.For example, even if adopt high level material (corrosion-resistant steel of high-quality) to manufacture elasticity reset device, add follow-up Passivation Treatment, be also difficult to avoid corrosion oxidation problem.
Ordinary consumer will be finished the product of whole container in the some months of bringing into use after liquid product, and transport before use, storage and on shelf, wait for that the process of selling is veryer long, reaches 2-3 sometimes.Therefore, if can be stoped liquid product contact resilient reset attachment by (under the tapered end state at pressure head) before using first at product, can greatly shorten the time of liquid product contact, corrosion elasticity reset device, thereby be conducive to solve the problem that the oxidated thing of liquid product pollutes.
CN201254337Y discloses a kind of liquor pump, and wherein, under the tapered end state of pressure head, the lower end of piston rod is pressed against the ball of lower check valve ball on its valve seat, thus being communicated with of blocking-up reservoir and product container inside.First, the accuracy of manufacture that this structural requirement is very high, to guarantee that pressure head can be pressed against the ball of check valve ball on valve seat when the tapered end position exactly; Even if there is higher accuracy of manufacture, also the more difficult suitable sealing that realizes check valve ball, because pressure head is to be locked in threadably cylinder cover, the characteristic of this engage thread itself has just caused and has been difficult to control the power putting on check valve ball, causes user to be difficult to realize suitable sealing.Secondly, due to check valve ball pressurized for a long time under the tapered end state at pressure head, thereby be easy to cause the distortion of ball or valve seat, cause check valve ball in liquor pump use procedure afterwards normally to work.
Summary of the invention
In view of the above-mentioned problems in the prior art, main purpose of the present invention is to provide a kind of structure and manufactures simple, effectively to reduce the oxidated thing pollution of liquid product push type liquor pump.
In order to realize above-mentioned purpose of the present invention, according to the present invention, a kind of push type liquor pump is provided, for being installed on container so that the liquid product pumping of described internal tank is assigned to described external container, described liquor pump comprises the pressure head with export department, the reservoir being formed by cylinder, be slidably disposed on vertically in described reservoir and be connected with described pressure head and the piston component that can pump in described reservoir, be arranged in described reservoir and for vertically described piston component being applied to the upwards elasticity reset device of bias voltage, and be arranged on described reservoir bottom for controlling the unilaterally connected lower check valve of described reservoir and described internal tank, described pressure head can be positioned tapered end position with respect to described cylinder, be locked to described cylinder and stop the crank motion of described piston component in described reservoir at pressure head described in described tapered end position, wherein, described liquor pump also comprises for block the part that is provided with described elasticity reset device of described reservoir and the sealing mechanism being communicated with of described lower check valve during in described tapered end position at described pressure head.
Utilize liquor pump of the present invention, block the part that is provided with described elasticity reset device of reservoir and the sealing mechanism being communicated with of lower check valve during in tapered end position at pressure head owing to having adopted, thereby without liquid product isolated that lower check valve is applied to any pressure and can realize the elasticity reset device that is arranged in reservoir and internal tank, avoid the long-term pressurized of time check valve and the problem of deformation failure.
According to the present invention, described piston component can comprise piston rod, described piston rod is provided with piston head in its lower end, described piston head is extended with the sleeve of Central Closed vertically downwards, described cylinder is formed with crossette portion in the top position of described lower check valve in described reservoir, and at least a portion inner peripheral surface of the described crossette portion that described sealing mechanism engages by least a portion outer peripheral face of described sleeve with described at least a portion outer peripheral face forms.Utilize this structure, sealing mechanism is made up of the piston head of piston component and a part for cylinder self, without any extra independent parts, makes structure and manufactures very simple.And the size of the sealing surface that can engage each other by suitable increase reduces accuracy of manufacture requirement, thereby contribute to reduce manufacturing cost.
According to the present invention, described at least a portion outer peripheral face of described sleeve can be formed with jut, for engaging with described at least a portion inner peripheral surface of described crossette portion.Or described at least a portion inner peripheral surface of described crossette portion is formed with jut, for engaging with described at least a portion outer peripheral face of described sleeve.Utilize such structure, can further improve the reliability that engages sealing.
According to the present invention, described elasticity reset device can be helical metal Compress Spring, and described spring housing is located on described sleeve.
According to the present invention, described piston component can comprise piston rod, described piston rod is provided with piston head in its lower end, described piston head is extended with the seal ring of Central Closed vertically downwards, described cylinder is attached hermetically vertically in the top position of described lower check valve a sleeve pipe, described sleeve pipe forms the inner chamber that is communicated with described lower check valve and described reservoir, and the upper part of the described sleeve pipe that described sealing mechanism engages by the end portion of described seal ring with described end portion forms.Utilize this structure, sealing mechanism is made up of the piston head of piston component and the sleeve pipe that is attached to hermetically cylinder.
According to the present invention, at least a portion inner peripheral surface of the described sleeve pipe that described sealing mechanism can engage by least a portion outer peripheral face of described seal ring with described at least a portion outer peripheral face forms.
According to the present invention, described at least a portion outer peripheral face of described seal ring can be formed with jut, for engaging with described at least a portion inner peripheral surface of described sleeve pipe.Or described at least a portion inner peripheral surface of described sleeve pipe is formed with jut, for engaging with described at least a portion outer peripheral face of described seal ring.Utilize such structure, can further improve the reliability that engages sealing.
According to the present invention, described elasticity reset device can be helical metal Compress Spring, and described spring housing is located on described sleeve pipe.
According to the present invention, described sleeve pipe can have the flange extending from its outer peripheral face radial outward, described cylinder is formed with crossette portion in the top position of described lower check valve in described reservoir, described flange seal is supported on the upper surface of described crossette portion, and the lower end abutment of described spring is pressed against in described flange in described crossette portion.Utilize such structure, the effect of pressing by means of spring to flange, can further make sleeve pipe reliably sealed attachment in cylinder.
According to the present invention, the described outer peripheral face below described flange of described sleeve pipe can and the inner peripheral surface of described crossette portion between form interference fit so that described bobbin seal be attached to cylinder.Utilize such structure, can more securely bobbin seal be attached to cylinder.
According to the present invention, described elasticity reset device can be metal spring.Certainly, described elasticity reset device can be also the elastic element of other material.
According to the present invention, described lower check valve can be ball valve.Certainly, described lower check valve can be also the check valve of other type.
According to the present invention, described ball valve can comprise valve seat and can with described valve base sealing against ball, described ball can be in restricted scope with respect to described valve seat motion.
Other feature of the present invention and advantage are by by embodying the description of exemplary embodiment referring to accompanying drawing.
Brief description of the drawings
Fig. 1 is that the push type liquor pump of first embodiment of the invention is at the cutaway view of tapered end state;
Fig. 1 a is the enlarged drawing of the I part in Fig. 1;
Fig. 2 is that the push type liquor pump of the first embodiment is at the cutaway view of open mode;
Fig. 3 a-3d is each view of the piston head of the push type liquor pump of the first embodiment, and wherein, Fig. 3 a is lateral plan, and Fig. 3 b is that Fig. 3 c is birds-eye view along the cutaway view of the A-A line in Fig. 3 a, and Fig. 3 d is block diagram;
Fig. 4 a-4b is each view of the cylinder of the push type liquor pump of the first embodiment, and wherein, Fig. 4 a is lateral plan, and Fig. 4 b is the cutaway view along the B-B line in Fig. 4 a;
Fig. 5 is that the push type liquor pump of second embodiment of the invention is at the cutaway view of tapered end state;
Fig. 5 a is the enlarged drawing of the II part in Fig. 5;
Fig. 6 is that the push type liquor pump of second embodiment of the invention is at the cutaway view of open mode;
Fig. 7 a-7d is each view of the sleeve pipe of the push type liquor pump of the second embodiment, and wherein, Fig. 7 a is lateral plan, and Fig. 7 c is birds-eye view, and Fig. 7 b is that Fig. 7 d is block diagram along the cutaway view of the C-C line in Fig. 7 c;
Fig. 8 a-8d is each view of the piston head of the push type liquor pump of the second embodiment, and wherein, Fig. 8 a is lateral plan, and Fig. 8 b is that Fig. 8 c is birds-eye view along the cutaway view of the D-D line in Fig. 8 a, and Fig. 8 d is block diagram;
Fig. 9 is that a push type liquor pump of prior art is at the cutaway view of tapered end state; And
Figure 10 is that the push type liquor pump of Fig. 9 is at the cutaway view of open mode.
Detailed description of the invention
First, at this by the way, the "up" and "down" described in literary composition is placed with and is vertically oriented (be liquor pump be configured to its axis direction consistent with vertical direction) and determines with respect to liquor pump.
Referring to Fig. 1-4, the first embodiment of the present invention shown in it.This liquor pump mainly comprises the pressure head 10 with export department, limit the cylinder 20 of reservoir 30, be slidably disposed on vertically in reservoir 30 and be connected with pressure head 10 and the piston component 40 that can pump in reservoir 30, be arranged in reservoir 30 and be elasticity reset device for vertically described piston component 40 being applied to the upwards helical metal Compress Spring 50(of bias voltage), and be arranged on reservoir 30 bottoms for controlling the reservoir 30 unilaterally connected lower check valve 60 inner with container (not shown).These members assemble along axis A direction substantially, as shown in figs. 1 and 2.
Cylinder 20 has cylinder cover 21 at its top, and pressure head 10 can be locked in this cylinder cover 21 by engage thread (can certainly by the alternate manner such as buckle).In the time that pressure head 10 is abundant and cylinder cover 21 forms screw thread fit, pressure head 10 is just in tapered end state.
Piston component 40 substantially comprises the piston rod 41 that is connected with pressure head 10, is connected in the piston head 42 of piston rod 41 lower ends and is assemblied in the piston piece 45 on piston head 42.Piston head 42 is extended with sleeve 43 downwards along axis A direction, and this sleeve 43 center is closed (for example in the top), to prevent that liquid product from being entered the inner chamber of piston rod 41 and finally being discharged from the export department of pressure head 10 by the inner chamber of this sleeve 43.
Be provided with lower check valve 60 in the bottom of reservoir 30.This lower check valve 60 is ball valves, but also can be the check valve of any other type.Lower check valve 60 comprise valve seat 62 and can with valve seat 62 seal against ball 61.On the inwall of valve seat 62, be provided with vertically upwards extend and at for example 3-4 root of the limit rib 63(of its end radial inward bending), for limiting the scope of ball 61 with respect to valve seat 62 up-and-down movements.Valve seat 62 is formed by cylinder 20.
Cylinder 20 is formed with crossette portion 22 in the top position of lower check valve 60 in reservoir 30.Crossette portion 22 is formed with the upper surface of approximate horizontal and vertical inner peripheral surface 23 roughly.This crossette portion 22 is connected with the valve seat 62 of lower check valve 60.
Spring 50 is set on the outer peripheral face 44 of sleeve 43, and its upper end is resisted against the lower surface of the flange portion 46 forming on piston head 42, and lower end abutment is in the upper surface of the crossette portion 22 of cylinder 20.Therefore, sleeve 43 has also played the effect of spring perch.
When pressure head 10 is during in tapered end state, pressure head 10, namely piston rod 41 is positioned at its nadir substantially with respect to cylinder 20.Now, the end portion of sleeve 43 stretches in the inner chamber that crossette portion 22 forms, the outer peripheral face 44 of this office, bottom and the corresponding inner peripheral surface 23 of crossette portion 22 are engaged, thereby being communicated with between blocking-up reservoir 30 and lower check valve 60, entering reservoir 30 and spring 50 parts such as grade are caused to corrosion oxidation by lower check valve 60 with the liquid product that prevents internal tank.Therefore, the corresponding inner peripheral surface 23 of the above-mentioned outer peripheral face 44 of sleeve 43 and the crossette portion 22 that engages with it forms the part that is provided with spring 50 of reservoir 30 and the sealing mechanism being communicated with of lower check valve 60 blocked during in tapered end position at pressure head 10 of the present invention.
The outer peripheral face 44 of the above-mentioned sealing mechanism of formation of sleeve 43 can have radially inside jut, as can be the clearlyest seen from Fig. 1 a, with reinforced seal.Certainly, this jut also can be arranged on the inner peripheral surface 23 of crossette portion 22.
For the liquor pump of above-mentioned this first embodiment, sealing mechanism is made up of piston head 42 and the each own integral part of cylinder 20, without any need for extra separate part, thereby has simplified liquid pump structure and assembling manufacturing.And, the bonding area of the inner peripheral surface 23 of the outer peripheral face 44 to the sleeve 43 engaging each other and crossette portion 22 regulates as required, namely regulating sleeve 43 can stretch into the length of the inner chamber of crossette portion 22, for example, can be reduced accuracy of manufacture requirement and be improved sealing reliability by suitable increase bonding area.
Referring to Fig. 5-8, the second embodiment of the present invention shown in it.Similar with above-mentioned the first embodiment, this liquor pump mainly comprises the pressure head 110 with export department, limit the cylinder 120 of reservoir 130, be slidably disposed on vertically in reservoir 130 and be connected with pressure head 110 and the piston component 140 that can pump in reservoir 130, be arranged in reservoir 130 and be elasticity reset device for vertically described piston component 140 being applied to the upwards helical metal Compress Spring 150(of bias voltage), and be arranged on reservoir 130 bottoms for controlling the reservoir 130 unilaterally connected lower check valve 160 inner with container (not shown).These members assemble along axis A direction substantially, as shown in Figures 5 and 6.
Cylinder 120 has cylinder cover 121 at its top, and pressure head 110 can be locked in this cylinder cover 121 by engage thread (can certainly by the alternate manner such as buckle).In the time that pressure head 110 is abundant and cylinder cover 121 forms screw thread fit, pressure head 110 is just in tapered end state.
Piston component 140 substantially comprises the piston rod 141 that is connected with pressure head 110, is connected in the piston head 142 of piston rod 141 lower ends and is assemblied in the piston piece 145 on piston head 142.Piston head 142 is extended with seal ring 143 downwards along axis A direction, sealing Huan143 center is closed (for example in the top), to prevent that liquid product from being entered the inner chamber of piston rod 141 and finally being discharged from the export department of pressure head 110 by the inner chamber of sealing ring 143.
Be provided with lower check valve 160 in the bottom of reservoir 130.This lower check valve 160 is ball valves.Lower check valve 160 comprise valve seat 162 and can with valve seat 162 seal against ball 161.Valve seat 162 is formed by cylinder 120.
Cylinder 120 is formed with crossette portion 122 in the top position of lower check valve 160 in reservoir 130.Crossette portion 122 is formed with the upper surface of approximate horizontal and vertical inner peripheral surface roughly.This crossette portion 122 is connected with the valve seat 162 of lower check valve 160.
Attached hermetically in crossette portion 122 have a sleeve pipe 170.This sleeve pipe 170 is cylindric substantially, its upper end open, and near its lower end, there is the flange 171 extending from the outer peripheral face radial outward of sleeve pipe.Flange 171 is supported on the upper surface of crossette portion 122 hermetically, making to be positioned at the sleeve pipe outer peripheral face 172 of flange below 171 engages with the corresponding inner peripheral surface of crossette portion 122, and this joint can form interference fit, so that sleeve pipe 170 is attached to cylinder 120 more firmly, more hermetically.Sleeve pipe 170 is hollow, thereby forms the inner chamber that is communicated with lower check valve 160 and reservoir 130.The lower end edge of sleeve pipe 170 radially forms positive stop strip 173 cruciferous, for limiting the upper limit of movement of ball 161 of lower check valve 160.
Spring 150 is set in being positioned on more than 171 outer peripheral face of flange of sleeve pipe 170, and what its upper end was resisted against piston head 142 is positioned at seal ring 143 lower surface around, and lower end abutment is in the upper surface of the flange 171 of sleeve pipe 170.Therefore, sleeve pipe 170 has also played the effect of spring perch.
When pressure head 110 is during in tapered end state, pressure head 110, namely piston rod 141 is positioned at its nadir substantially with respect to cylinder 120.Now, seal ring 143 stretches in the upper end open of sleeve pipe 170, make the outer peripheral face 144 of seal ring 143 and the corresponding inner peripheral surface of sleeve pipe 170 174 phase sealed engagement, as the clearest illustrating in Fig. 5 a, thereby being communicated with between blocking-up reservoir 130 and lower check valve 160, entering reservoir 130 and spring 150 parts such as grade are caused to corrosion oxidation by lower check valve 160 with the liquid product that prevents internal tank.Therefore, the corresponding inner peripheral surface 174 of the above-mentioned outer peripheral face 144 of seal ring 143 and the sleeve pipe 170 that engages with it forms the part that is provided with spring 150 of reservoir 130 and the sealing mechanism being communicated with of lower check valve 160 blocked during in tapered end position at pressure head 110 of the present invention.
For the liquor pump of above-mentioned this second embodiment, the bonding area of the inner peripheral surface 174 of the outer peripheral face 144 to the seal ring 143 engaging each other and sleeve pipe 170 regulates as required, namely regulate seal ring 143 can stretch into the length of the inner chamber of sleeve pipe 170, for example, can reduce accuracy of manufacture requirement and improve sealing reliability by suitable increase bonding area.
Describe the present invention by the description to exemplary embodiment above, but it will be apparent to those skilled in the art that in spiritual scope of the present invention, completely can to shown in embodiment carry out various variations.For example, shown in the second embodiment in, the end portion of seal ring 143 inserts in the upper end open of sleeve pipe 170, but also can be designed so that the upper part of sleeve pipe inserts in the lower ending opening of seal ring.Again for example, in an illustrated embodiment, elasticity reset device is described to helical metal Compress Spring, but also can adopt the elastic body of elastic bellows or other type.Therefore, protection scope of the present invention is not limited to described detailed description of the invention, and should rationally be limited by claims.
Claims (17)
1. a push type liquor pump, for being installed on container so that the liquid product pumping of described internal tank is assigned to described external container, described liquor pump comprises the pressure head with export department, the reservoir being formed by cylinder, be slidably disposed on vertically in described reservoir and be connected with described pressure head and the piston component that can pump in described reservoir, be arranged in described reservoir and for vertically described piston component being applied to the upwards elasticity reset device of bias voltage, and be arranged on described reservoir bottom for controlling the unilaterally connected lower check valve of described reservoir and described internal tank, described pressure head can be positioned tapered end position with respect to described cylinder, be locked to described cylinder and stop the crank motion of described piston component in described reservoir at pressure head described in described tapered end position, it is characterized in that, described liquor pump also comprises for block the part that is provided with described elasticity reset device of described reservoir and the sealing mechanism being communicated with of described lower check valve during in described tapered end position at described pressure head.
2. liquor pump as claimed in claim 1, it is characterized in that, described piston component comprises piston rod, described piston rod is provided with piston head in its lower end, described piston head is extended with the sleeve of Central Closed vertically downwards, described cylinder is formed with crossette portion in the top position of described lower check valve in described reservoir, and at least a portion inner peripheral surface of the described crossette portion that described sealing mechanism engages by least a portion outer peripheral face of described sleeve with described at least a portion outer peripheral face forms.
3. liquor pump as claimed in claim 2, is characterized in that, described at least a portion outer peripheral face of described sleeve is formed with jut, for engaging with described at least a portion inner peripheral surface of described crossette portion.
4. liquor pump as claimed in claim 2, is characterized in that, described at least a portion inner peripheral surface of described crossette portion is formed with jut, for engaging with described at least a portion outer peripheral face of described sleeve.
5. liquor pump as claimed in claim 2, is characterized in that, described elasticity reset device is helical metal Compress Spring, and described spring housing is located on described sleeve.
6. liquor pump as claimed in claim 1, it is characterized in that, described piston component comprises piston rod, described piston rod is provided with piston head in its lower end, described piston head is extended with the seal ring of Central Closed vertically downwards, described cylinder is attached hermetically vertically in the top position of described lower check valve a sleeve pipe, described sleeve pipe forms the inner chamber that is communicated with described lower check valve and described reservoir, and the upper part of the described sleeve pipe that described sealing mechanism engages by the end portion of described seal ring with described end portion forms.
7. liquor pump as claimed in claim 6, is characterized in that, at least a portion inner peripheral surface of the described sleeve pipe that described sealing mechanism engages by least a portion outer peripheral face of described seal ring with described at least a portion outer peripheral face forms.
8. liquor pump as claimed in claim 7, is characterized in that, described at least a portion outer peripheral face of described seal ring is formed with jut, for engaging with described at least a portion inner peripheral surface of described sleeve pipe.
9. liquor pump as claimed in claim 7, is characterized in that, described at least a portion inner peripheral surface of described sleeve pipe is formed with jut, for engaging with described at least a portion outer peripheral face of described seal ring.
10. liquor pump as claimed in claim 6, is characterized in that, described elasticity reset device is helical metal Compress Spring, and described spring housing is located on described sleeve pipe.
11. liquor pumps as claimed in claim 10, it is characterized in that, described sleeve pipe has the flange extending from its outer peripheral face radial outward, described cylinder is formed with crossette portion in the top position of described lower check valve in described reservoir, described flange seal is supported on the upper surface of described crossette portion, and the lower end abutment of described spring is pressed against in described flange in described crossette portion.
12. liquor pumps as claimed in claim 11, is characterized in that, between the described outer peripheral face below described flange of described sleeve pipe and the inner peripheral surface of described crossette portion, form interference fit so that described bobbin seal be attached to cylinder.
13. liquor pumps as claimed in claim 1, is characterized in that, described elasticity reset device is metal spring.
14. liquor pumps as claimed in claim 1, is characterized in that, described lower check valve is ball valve.
15. liquor pumps as claimed in claim 14, is characterized in that, described ball valve comprise valve seat and can with described valve base sealing against ball, described ball can be in restricted scope with respect to described valve seat motion.
16. liquor pumps as claimed in claim 15, it is characterized in that, described ball valve comprise range of movement for limiting described ball, upwards extend vertically and at radially bending limit rib inwardly of its end, described limit rib is attached to described valve seat from described valve seat.
17. liquor pumps as claimed in claim 6, it is characterized in that, described lower check valve is ball valve, described ball valve comprise valve seat and can with described valve base sealing against ball, described ball can be with respect to described valve seat motion in restricted scope, the lower end of described sleeve pipe is provided with the positive stop strip radially extending along it, for limiting the upper limit of movement of described ball of described lower check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039690.7A CN103964056B (en) | 2013-01-31 | 2013-01-31 | Push type liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310039690.7A CN103964056B (en) | 2013-01-31 | 2013-01-31 | Push type liquid pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103964056A true CN103964056A (en) | 2014-08-06 |
| CN103964056B CN103964056B (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310039690.7A Active CN103964056B (en) | 2013-01-31 | 2013-01-31 | Push type liquid pump |
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| Country | Link |
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| CN (1) | CN103964056B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019100764A1 (en) * | 2017-11-21 | 2019-05-31 | 丁要武 | Liquid pump |
| CN112849727A (en) * | 2020-12-30 | 2021-05-28 | 浙江尚美包装有限公司 | Anti-pollution antidrip push type emulsion pump head |
| CN114788652A (en) * | 2021-01-25 | 2022-07-26 | 宝洁公司 | Manually operated dispensing pump |
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| CN201419877Y (en) * | 2009-04-21 | 2010-03-10 | 李贵荣 | Environmental-protection hydraulic pump |
| CN202400406U (en) * | 2011-11-21 | 2012-08-29 | 福建三明福欣源乳液泵有限公司 | Emulsion pump with external spring |
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| WO2019100764A1 (en) * | 2017-11-21 | 2019-05-31 | 丁要武 | Liquid pump |
| US11203026B2 (en) | 2017-11-21 | 2021-12-21 | Yaowu Ding | Liquid pump |
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| US11925948B2 (en) | 2021-01-25 | 2024-03-12 | The Procter & Gamble Company | Manually operated dispensing pump |
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