CN103964056B - Push type liquid pump - Google Patents
Push type liquid pump Download PDFInfo
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- CN103964056B CN103964056B CN201310039690.7A CN201310039690A CN103964056B CN 103964056 B CN103964056 B CN 103964056B CN 201310039690 A CN201310039690 A CN 201310039690A CN 103964056 B CN103964056 B CN 103964056B
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- reservoir
- liquid pump
- pressure head
- cylinder
- check valve
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Abstract
The present invention provides a kind of push type liquid pump.The liquid pump includes pressure head, is formed by cylinder reservoir, the piston component for being axially slidably arranged in reservoir and be connected and being pumped in reservoir with pressure head, be arranged in reservoir and be used for the elasticity reset device being biased vertically to piston component and be arranged on liquid storage trench bottom for controlling the unilaterally connected lower check valve inside reservoir and container.Pressure head can be located at tapered end position relative to cylinder, is locked to cylinder in the position pressure head and prevents piston component from being moved back and forth in reservoir.According to the present invention, liquid pump also includes being used for the sealing mechanism for blocking reservoir to connect with lower check valve when pressure head is in tapered end position.Using the present invention, effectively the fluid product in container can be prevented to be escaped from lower check valve and contact the oxidizable part of such as elasticity reset device etc in reservoir before liquid pump uses first, avoid during storage product by oxide contaminant.
Description
Technical field
The present invention relates to liquid pump field, more particularly to a kind of push type liquid of flexible resetting means
Pump.
Background technology
Push type liquid pump is usually the opening installed in container, will be held for the Manual press operation by user
Fluid product pump pressure in device distributes container for using.The generally flexible resetting means of this liquid pump, for making
User remove to pump head press down on effect after the pressure head is replied its original position, while will in pressure head reseting procedure
Fluid product in container is drawn into the reservoir of liquid pump for pump pressure distribution next time.In the market flexible multiple
The push type liquid pump of position device (generally metal spring), is to set elasticity reset device 250 mostly as shown in Figures 9 and 10
Put in reservoir 230.During the transport of product container of the liquid pump or storage are installed (state as shown in Figure 9,
Now pressure head 210 is in the tapered end state for the cylinder cover 221 for being locked to cylinder 220), container be likely to meet with it is reverse, by
Pressure or vibrations.If running into such situation, the fluid product in container is easy to can be through lower check valve 260 (being typically ball valve)
Enter in reservoir 230, so as to cause the corrosion oxidation of elasticity reset device.In general cosmetics and articles for washing etc
The shelf-life of fluid product is usually 3 years or so, and this requires elasticity reset device to invade being contacted for a long time by fluid product
It can not be aoxidized under erosion.But this is difficult to obtain.Even with high level material (such as stainless steel of high-quality)
To manufacture elasticity reset device, along with follow-up Passivation Treatment, it is also difficult to avoid corrosion oxidation problem.
Ordinary consumer will be finished the product of whole container within some months after beginning to use fluid product, and make
With preceding transport, storage and it is veryer long in the first-class process for sale of shelf, reach 2-3 sometimes.Therefore, if
Fluid product contact resilient resetting means can be being prevented before product is first used (under the tapered end state i.e. in pressure head), can be big
It is big to shorten fluid product contact, the time of corrosion elasticity reset device, so as to advantageously account for fluid product by oxide contaminant
The problem of.
CN201254337Y discloses a kind of liquid pump, wherein under the tapered end state of pressure head, the lower end of piston rod is by under
The ball of non-return valve is pressed against on its valve seat, so as to block reservoir and the connection inside product container.First, this structure will
The very high accuracy of manufacture is sought, to ensure that the ball of non-return valve can be pressed against valve seat by pressure head exactly when being in tapered end position
On；Even if there is the higher accuracy of manufacture, the also appropriate sealing of non-return valve relatively difficult to achieve, because pressure head is threadably to lock
In cylinder cover, the characteristic of this engagement thread in itself has resulted in the unmanageable power put on non-return valve, causes to use
Family is difficult to realize appropriate sealing.Secondly as non-return valve can be pressurized for a long time under the tapered end state of pressure head, thus very
The deformation of ball or valve seat is easily caused, non-return valve can not normal work during causing liquid pump use afterwards.
The content of the invention
In view of the above-mentioned problems in the prior art, it is a primary object of the present invention to provide a kind of structure and manufacture letter
List, it can effectively reduce push type liquid pump of the fluid product by oxide contaminant.
In order to realize the above-mentioned purpose of the present invention, it is proposed, according to the invention, a kind of push type liquid pump is provided, for installation into appearance
So that the fluid product pumping inside the container is assigned into the external container on device, the liquid pump includes having export department
Pressure head, formed by cylinder reservoir, be axially slidably arranged in the reservoir and be connected with the pressure head and
The piston component that can be pumped in the reservoir, it is arranged in the reservoir and is used for vertically to the work
Plug assembly apply the elasticity reset device that biases upwards and be arranged on the liquid storage trench bottom be used for control the reservoir
With the unilaterally connected lower check valve inside the container, the pressure head can be located at tapered end position relative to the cylinder,
The reciprocal fortune that pressure head described in the tapered end position is locked to the cylinder and prevents the piston component in the reservoir
It is dynamic, wherein, the liquid pump also includes being used for the setting for blocking the reservoir when the pressure head is in the tapered end position
There are part and the sealing mechanism of the connection of the lower check valve of the elasticity reset device.
Using the liquid pump of the present invention, the setting of reservoir has been blocked as a result of when pressure head is in tapered end position
Part and the sealing mechanism of the connection of lower check valve of elasticity reset device are stated, thus without applying any pressure to lower check valve
The isolation of the fluid product inside the elasticity reset device and container that are arranged in reservoir can be achieved, avoid lower check valve
Long-term be pressurized and the problem of deformation failure.
According to the present invention, the piston component may include piston rod, and the piston rod is provided with piston head in its lower end, described
Piston head extends axially downward the sleeve of Central Closed, and the cylinder is in the reservoir in the upper of the lower check valve
Orientation is put formed with crossette portion, the sealing mechanism by the sleeve at least a portion outer peripheral face and with described at least a portion
At least a portion inner peripheral surface in the crossette portion that outer peripheral face engages is formed.Using this structure, sealing mechanism is by piston group
The part composition of the piston head and cylinder itself of part, without any extra single part so that structure and manufacture are very simple
It is single.Furthermore, it is possible to accuracy of manufacture requirement is reduced by the size for the sealing surface for suitably increasing the conjunction that adjoins one another, so as to contribute to
Reduce manufacturing cost.
According to the present invention, at least a portion outer peripheral face of the sleeve can be formed with jut, for being dashed forward with described
At least a portion inner peripheral surface engagement of shoulder.Or at least a portion inner peripheral surface in the crossette portion is formed with prominent
The portion of rising, is engaged at least a portion outer peripheral face with the sleeve.Using such structure, engagement can further improve
The reliability of sealing.
According to the present invention, the elasticity reset device can be helical metal compression spring, and the spring is set in institute
State on sleeve.
According to the present invention, the piston component may include piston rod, and the piston rod is provided with piston head in its lower end, described
Piston head extends axially downward the sealing ring of Central Closed, the cylinder in the top position of the lower check valve vertically
Sleeve pipe is hermetically attached to, described sleeve pipe forms the inner chamber for connecting the lower check valve and the reservoir, the sealing mechanism
It is made up of the end portion of the sealing ring and the upper part of the described sleeve pipe engaged with the end portion.Using this
Structure, sealing mechanism by piston component piston head and be hermetically attached to the sleeve pipe of cylinder and form.
According to the present invention, the sealing mechanism can be by least a portion outer peripheral face of the sealing ring and with described at least one
At least a portion inner peripheral surface for the described sleeve pipe that portion perimeter face engages is formed.
According to the present invention, at least a portion outer peripheral face of the sealing ring can formed with jut, for it is described
At least a portion inner peripheral surface engagement of sleeve pipe.Or at least a portion inner peripheral surface of described sleeve pipe is formed with projection
Portion, engaged at least a portion outer peripheral face with the sealing ring.Using such structure, engagement can further improve
The reliability of sealing.
According to the present invention, the elasticity reset device can be helical metal compression spring, and the spring is set in institute
State on sleeve pipe.
According to the present invention, described sleeve pipe can have the flange radially extended from its outer peripheral face, and the cylinder is described
In the top position of the lower check valve formed with crossette portion in reservoir, the flange seal is supported on the upper of the crossette portion
On surface, the lower end of the spring is resisted against the flange and pressed it against in the crossette portion.Using such structure, borrow
Help spring to flange pressing effect, can further make sleeve pipe reliably sealed attachment in cylinder.
According to the present invention, the outer peripheral face below the flange of described sleeve pipe can be with the inner circumferential in the crossette portion
Interference fit is formed between face, so that described sleeve pipe is hermetically attached to cylinder.Using such structure, can more securely will
Bobbin seal is attached to cylinder.
According to the present invention, the elasticity reset device can be metal spring.Certainly, the elasticity reset device can also
It is the flexible member of other materials.
According to the present invention, the lower check valve can be ball valve.Certainly, the lower check valve can also be other types of
Check valve.
According to the present invention, the ball valve may include valve seat and can with the valve base sealing against ball, the ball can by
Moved in the range of limitation relative to the valve seat.
The other features and advantage of the present invention will be embodied by the description to exemplary embodiment referring to the drawings
Come.
Brief description of the drawings
Fig. 1 is sectional view of the push type liquid pump in tapered end state of first embodiment of the invention；
Fig. 1 a are the enlarged drawings of the I parts in Fig. 1；
Fig. 2 is sectional view of the push type liquid pump in open mode of first embodiment；
Fig. 3 a-3d are each views of the piston head of the push type liquid pump of first embodiment, wherein, Fig. 3 a are side views
Figure, Fig. 3 b are along the sectional view of the line A-A in Fig. 3 a, and Fig. 3 c are top views, and Fig. 3 d are stereograms；
Fig. 4 a-4b are each views of the cylinder of the push type liquid pump of first embodiment, wherein, Fig. 4 a are side views,
Fig. 4 b are the sectional views along the line B-B in Fig. 4 a；
Fig. 5 is sectional view of the push type liquid pump in tapered end state of second embodiment of the invention；
Fig. 5 a are the enlarged drawings of the II parts in Fig. 5；
Fig. 6 is sectional view of the push type liquid pump in open mode of second embodiment of the invention；
Fig. 7 a-7d are each views of the sleeve pipe of the push type liquid pump of second embodiment, wherein, Fig. 7 a are side views,
Fig. 7 c are top views, and it along the sectional view of the line C-C in Fig. 7 c, Fig. 7 d is stereogram that Fig. 7 b, which are,；
Fig. 8 a-8d are each views of the piston head of the push type liquid pump of second embodiment, wherein, Fig. 8 a are side views
Figure, Fig. 8 b are along the sectional view of the line D-D in Fig. 8 a, and Fig. 8 c are top views, and Fig. 8 d are stereograms；
Fig. 9 is sectional view of the push type liquid pump in tapered end state of prior art；And
Figure 10 is Fig. 9 sectional view of the push type liquid pump in open mode.
Embodiment
First, herein by the way, the "up" and "down" described in text is to be placed with to be vertically oriented relative to liquid pump
(i.e. it is consistent with vertical direction to be configured to its axis direction for liquid pump) and determine.
Referring to Fig. 1-4b, there is shown with the first embodiment of the present invention.The liquid pump mainly includes the pressure with export department
First 10, limit the cylinder 20 of reservoir 30, be axially slidably arranged in reservoir 30 and be connected with pressure head 10 and can be
The piston component 40 that is pumped in reservoir 30, it is arranged in reservoir 30 and is used for vertically to the piston component
40 apply the helical metal compression spring 50 (i.e. elasticity reset device) biased upwards and are arranged on the bottom of reservoir 30
For controlling reservoir 30 and container internal unilaterally connected lower check valve 60 (not shown).These components are substantially along axis A
Direction is assembled, as shown in figs. 1 and 2.
Cylinder 20 has a cylinder cover 21 at the top of it, and pressure head 10 can threadedly (can certainly be by such as blocking
The other manner of button etc) it is locked in the cylinder cover 21.When pressure head 10 fully forms screw thread with cylinder cover 21 to be coordinated, pressure head 10
Just it is in tapered end state.
Piston component 40 generallys include the piston rod 41 being connected with pressure head 10, is connected to the piston head 42 of the lower end of piston rod 41
With the piston piece 45 being assemblied on piston head 42.Piston head 42 has extended downwardly sleeve 43 along axis A directions, in the sleeve 43
The heart is closed (such as in its upper end), to prevent fluid product from passing through the inner chamber of the sleeve 43 to enter the inner chamber of piston rod 41 simultaneously
Finally discharged from the export department of pressure head 10.
Lower check valve 60 is provided with the bottom of reservoir 30.The lower check valve 60 is ball valve but it is also possible to be any other
The check valve of type.Lower check valve 60 includes valve seat 62 and the ball 61 that can be sealed against with valve seat 62.On the inwall of valve seat 62
The limit rib 63 (such as 3-4 roots) for extending axially upward and being bent in its end radial inward is provided with, for limiting ball 61
The scope to be moved up and down relative to valve seat 62.Valve seat 62 is integrally formed by cylinder 20.
Cylinder 20 is in reservoir 30 in the top position of lower check valve 60 formed with crossette portion 22.Crossette portion 22 formed with
Approximate horizontal upper surface and the inner peripheral surface 23 of general vertical.The 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 flange portion formed on piston head 42
46 lower surface, lower end are resisted against the upper surface in the crossette portion 22 of cylinder 20.Therefore, sleeve 43 also acts the work of spring base
With.
When pressure head 10 is in tapered end state, pressure head 10, namely piston rod 41 relative to cylinder 20 generally within it most
Low spot.Now, the end portion of sleeve 43 is stretched into the inner chamber that crossette portion 22 is formed so that the outer peripheral face of the bottom office
44 inner peripheral surfaces 23 corresponding to crossette portion 22 engage, so as to block the connection between reservoir 30 and lower check valve 60, to prevent
Only the fluid product inside container enters reservoir 30 to cause corrosion oxidation to the grade part of spring 50 by lower check valve 60.Cause
This, the above-mentioned outer peripheral face 44 of sleeve 43 and the corresponding inner peripheral surface 23 in crossette portion 22 being engaged by form the present invention in pressure head
10 block the part for being provided with spring 50 and the sealing mechanism of the connection of lower check valve 60 of reservoir 30 when being in tapered end position.
The outer peripheral face 44 of the above-mentioned sealing mechanism of composition of sleeve 43 can have jut radially inward, such as from Fig. 1 a
Can most it be clearly seen, to strengthen sealing.Certainly, the jut can also be arranged on the inner peripheral surface 23 in crossette portion 22.
For the liquid pump of the above-mentioned first embodiment, sealing mechanism is by piston head 42 and each own one of cylinder 20
Part is formed, it is not necessary to any extra separate part, so as to simplify the structure of liquid pump and assembling manufacturing.Furthermore, it is possible to
The bonding area of the outer peripheral face 44 to the sleeve 43 of the conjunction that adjoins one another and the inner peripheral surface 23 in crossette portion 22 is adjusted as needed,
Namely regulating sleeve 43 can stretch into the length of the inner chamber in crossette portion 22, such as can be reduced by suitably increasing bonding area
Accuracy of manufacture requirement and raising sealing reliability.
Referring to Fig. 5-8d, there is shown with the second embodiment of the present invention.It is similar with above-mentioned first embodiment, the liquid
Body pump mainly includes the pressure head 110 with export department, limits the cylinder 120 of reservoir 130, is axially slidably arranged on storage
The piston component 140 that in liquid bath 130 and is connected and can be pumped in reservoir 130 with pressure head 110, it is arranged on liquid storage
It is used to vertically apply the piston component 140 on (the i.e. bullet of helical metal compression spring 150 biased upwards in groove 130
Property resetting means) and be arranged on the bottom of reservoir 130 be used to control reservoir 130 and container internal list (not shown)
To the lower check valve 160 of connection.These components are assembled along axis A directions substantially, as shown in Figures 5 and 6.
Cylinder 120 has a cylinder cover 121 at the top of it, and pressure head 110 can threadedly (can certainly be by such as
The other manner of buckle etc) it is locked in the cylinder cover 121.When pressure head 110 fully forms screw thread with cylinder cover 121 to be coordinated,
Pressure head 110 is just in tapered end state.
Piston component 140 generallys include the piston rod 141 being connected with pressure head 110, is connected to the piston of the lower end of piston rod 141
First 142 and the piston piece 145 that is assemblied on piston head 142.Piston head 142 has extended downwardly sealing ring 143 along axis A directions,
The center of the sealing ring 143 is closed (such as in its upper end), to prevent fluid product from passing through the inner chamber of the sealing ring 143 to enter
Enter the inner chamber of piston rod 141 and finally discharged from the export department of pressure head 110.
Lower check valve 160 is provided with the bottom of reservoir 130.The lower check valve 160 is ball valve.Lower check valve 160 includes
Valve seat 162 and the ball 161 that can be sealed against with valve seat 162.Valve seat 162 is integrally formed by cylinder 120.
Cylinder 120 is in reservoir 130 in the top position of lower check valve 160 formed with crossette portion 122.Crossette portion 122
Inner peripheral surface formed with approximate horizontal upper surface and general vertical.The crossette portion 122 and the valve seat 162 of lower check valve 160 connect
Integrally.
Sleeve pipe 170 is hermetically attached in crossette portion 122.The sleeve pipe 170 is substantially cylindrical, its upper end open, and
There is the flange 171 radially extended from the outer peripheral face of sleeve pipe in its lower end.Flange 171 is hermetically supported on crossette portion
On 122 upper surface so that connect positioned at sleeve pipe outer peripheral face 172 of the flange below 171 inner peripheral surface corresponding to crossette portion 122
Close, and the engagement can form interference fit, so that sleeve pipe 170 is more firm, is more hermetically attached to cylinder 120.Sleeve pipe
170 be hollow, so as to form the inner chamber of the lower check valve 160 of connection and reservoir 130.The lower end of sleeve pipe 170 is radially formed
Positive stop strip 173 cruciferous, the upper limit of movement of the ball 161 for limiting lower check valve 160.
Spring 150 be set in sleeve pipe 170 on the outer peripheral face of flange more than 171, its upper end is resisted against piston head 142
The lower surface around the sealing ring 143, lower end is resisted against the upper surface of the flange 171 of sleeve pipe 170.Therefore, sleeve pipe 170 is gone back
Serve the effect of spring base.
When pressure head 110 is in tapered end state, pressure head 110, namely piston rod 141 relative to cylinder 120 generally within
Its minimum point.Now, sealing ring 143 is stretched into the upper end open of sleeve pipe 170 so that the outer peripheral face 144 and sleeve pipe of sealing ring 143
170 phase of corresponding inner peripheral surface 174 is sealingly engaged, as shown in most clear in Fig. 5 a, so as to block reservoir 130 and lower check valve
Connection between 160, to prevent the fluid product inside container from entering reservoir 130 by lower check valve 160 and to spring 150
Corrosion oxidation is caused Deng part.Therefore, the above-mentioned outer peripheral face 144 of sealing ring 143 and the sleeve pipe 170 that is engaged by it is corresponding in
Side face 174 forms the part for being provided with spring 150 that reservoir 130 is blocked when pressure head 110 is in tapered end position of the present invention
With the sealing mechanism of the connection of lower check valve 160.
, can be as needed to the outer of the sealing ring 143 of the conjunction that adjoins one another for the liquid pump of the above-mentioned second embodiment
The bonding area of the inner peripheral surface 174 of side face 144 and sleeve pipe 170 is adjusted, that is, regulation sealing ring 143 can stretch into sleeve pipe
The length of 170 inner chamber, for example, can by suitably increase bonding area reduce the accuracy of manufacture requirement and improve sealing can
By property.
Above by the description to exemplary embodiment, the present invention is described, but those skilled in the art are clear
Chu, in the scope of the present invention, various change can be carried out to shown embodiment completely.For example, shown second
In embodiment, in the upper end open of the end portion plug-in-sleeve 170 of sealing ring 143, but it can also be designed to make the upper of sleeve pipe
In the lower ending opening for holding partial insertion sealing ring.In another example in an illustrated embodiment, elasticity reset device is described as spiral
Shape compression of metals spring, but elastic bellows or other types of elastomer can also be used.Therefore, protection scope of the present invention
Described embodiment is not limited to, and should rationally be limited by claims.
Claims (16)
1. a kind of push type liquid pump, institute is assigned to so that the fluid product inside the container to be pumped for installation on container
External container is stated, the liquid pump includes having the pressure head of export department, the reservoir formed by cylinder, axially slidably set
The piston component putting in the reservoir and be connected and can be pumped in the reservoir with the pressure head, set
It is used to apply the elasticity reset device biased upwards to the piston component vertically in the reservoir and is arranged on
Being used for of the liquid storage trench bottom controls the unilaterally connected lower check valve inside the reservoir and the container, the pressure head
Tapered end position is can be located at relative to the cylinder, the cylinder is locked in pressure head described in the tapered end position and prevents institute
State reciprocating motion of the piston component in the reservoir, it is characterised in that the liquid pump also includes being used in the pressure head
The part for being provided with the elasticity reset device of the reservoir and the lower check valve are blocked during in the tapered end position
Connection sealing mechanism；
Wherein, the piston component includes piston rod, and the piston rod is provided with piston head in its lower end, and the piston head is vertically
Extend downwardly the sleeve of Central Closed, the cylinder in the reservoir in the top position of the lower check valve formed with
Crossette portion, the crossette portion in the cylinder diameter to inwardly projecting, the sealing mechanism by the sleeve at least a portion
Outer peripheral face and at least a portion inner peripheral surface in the crossette portion engaged with least a portion outer peripheral face are formed, when described
When pressure head is in tapered end state, the end portion of the sleeve is stretched into the inner chamber that the crossette portion is formed, with the crossette
The corresponding inner peripheral surface in portion engages.
2. liquid pump as claimed in claim 1, it is characterised in that at least a portion outer peripheral face of the sleeve formed with
Jut, engaged at least a portion inner peripheral surface with the crossette portion.
3. liquid pump as claimed in claim 1, it is characterised in that at least a portion inner peripheral surface in the crossette portion is formed
There is jut, engaged at least a portion outer peripheral face with the sleeve.
4. liquid pump as claimed in claim 1, it is characterised in that the elasticity reset device is helical metal compression bullet
Spring, the spring are set on the sleeve.
5. a kind of push type liquid pump, institute is assigned to so that the fluid product inside the container to be pumped for installation on container
External container is stated, the liquid pump includes having the pressure head of export department, the reservoir formed by cylinder, axially slidably set
The piston component putting in the reservoir and be connected and can be pumped in the reservoir with the pressure head, set
It is used to apply the elasticity reset device biased upwards to the piston component vertically in the reservoir and is arranged on
Being used for of the liquid storage trench bottom controls the unilaterally connected lower check valve inside the reservoir and the container, the pressure head
Tapered end position is can be located at relative to the cylinder, the cylinder is locked in pressure head described in the tapered end position and prevents institute
State reciprocating motion of the piston component in the reservoir, it is characterised in that the liquid pump also includes being used in the pressure head
The part for being provided with the elasticity reset device of the reservoir and the lower check valve are blocked during in the tapered end position
Connection sealing mechanism；
Wherein, the piston component includes piston rod, and the piston rod is provided with piston head in its lower end, and the piston head is vertically
The sealing ring of Central Closed is extended downwardly, the cylinder is hermetically attached to vertically in the top position of the lower check valve
Sleeve pipe, described sleeve pipe form the inner chamber for connecting the lower check valve and the reservoir, and the sealing mechanism is by the sealing ring
End portion and the described sleeve pipe engaged with the end portion upper part form, when the pressure head is in tapered end shape
During state, the sealing ring is stretched into the upper end open of described sleeve pipe, is mutually sealingly engaged with the corresponding inner peripheral surface of described sleeve pipe.
6. liquid pump as claimed in claim 5, it is characterised in that the sealing mechanism by the sealing ring at least a portion
Outer peripheral face and at least a portion inner peripheral surface of the described sleeve pipe engaged with least a portion outer peripheral face are formed.
7. liquid pump as claimed in claim 6, it is characterised in that at least a portion outer peripheral face of the sealing ring is formed
There is jut, engaged at least a portion inner peripheral surface with described sleeve pipe.
8. liquid pump as claimed in claim 6, it is characterised in that at least a portion inner peripheral surface of described sleeve pipe formed with
Jut, engaged at least a portion outer peripheral face with the sealing ring.
9. liquid pump as claimed in claim 5, it is characterised in that the elasticity reset device is helical metal compression bullet
Spring, the spring are set in described sleeve pipe.
10. liquid pump as claimed in claim 9, it is characterised in that described sleeve pipe has radially to be extended from its outer peripheral face
Flange, the cylinder is in the reservoir in the top position of the lower check valve formed with crossette portion, the crossette portion
In the cylinder diameter to protruding inwardly from, the flange seal is supported on the upper surface in the crossette portion, under the spring
End is resisted against the flange and pressed it against in the crossette portion.
11. liquid pump as claimed in claim 10, it is characterised in that being located at for described sleeve pipe is described outer below the flange
Interference fit is formed between side face and the inner peripheral surface in the crossette portion, so that described sleeve pipe is hermetically attached to cylinder.
12. the liquid pump as described in claim 1 or 5, it is characterised in that the elasticity reset device is metal spring.
13. the liquid pump as described in claim 1 or 5, it is characterised in that the lower check valve is ball valve.
14. liquid pump as claimed in claim 13, it is characterised in that the ball valve includes valve seat and can be with the valve base sealing
Against ball, the ball can in restricted scope relative to the valve seat move.
15. liquid pump as claimed in claim 14, it is characterised in that the ball valve includes being used for the motion model for limiting the ball
Limit rib enclosing, extending axially upward from the valve seat and bent radially inwards in its end, the limit rib attach
In the valve seat.
16. liquid pump as claimed in claim 5, it is characterised in that the lower check valve is ball valve, and the ball valve includes valve seat
With can with the valve base sealing against ball, the ball can in restricted scope relative to the valve seat move, the set
The lower end of pipe is provided with the positive stop strip radially extended, the upper limit of movement of the ball for limiting the 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 CN103964056A (en) | 2014-08-06 |
| CN103964056B true CN103964056B (en) | 2017-11-17 |
Family
ID=51234153
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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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103964056B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809026A (en) * | 2017-11-21 | 2019-05-28 | 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 |
| US11338310B1 (en) | 2021-01-25 | 2022-05-24 | The Procter & Gamble Company | Manually operated dispensing pump |
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| CN103964056A (en) | 2014-08-06 |
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