CN109731178A - A kind of low-power consumption micro liquid pump - Google Patents
A kind of low-power consumption micro liquid pump Download PDFInfo
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- CN109731178A CN109731178A CN201811650360.0A CN201811650360A CN109731178A CN 109731178 A CN109731178 A CN 109731178A CN 201811650360 A CN201811650360 A CN 201811650360A CN 109731178 A CN109731178 A CN 109731178A
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- liquid
- piston
- titanium alloy
- cabin
- liquid pump
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Abstract
The invention discloses a kind of low-power consumption micro liquid pumps, the liquid pump includes: liquid cabin, the piston that the first side wall reciprocating movement is parallel in the liquid cabin is set, the first inlet valve is provided on the piston, it is separately positioned on the second inlet valve and dump valve of the liquid cabin the first side wall and second sidewall, the second sidewall and the first side wall are opposite, and the intelligent titanium alloy driving unit being connected on the piston；When the intelligent titanium alloy driving unit shrinks deformation, drive the piston mobile with deformation direction is shunk, it forms pressure difference so that the liquid cabin is inside and outside and the inlet valve and/or dump valve is driven to open, to realize the convection current of liquid inside and outside the liquid cabin.In this way, low-power consumption micro liquid pump of the present invention realizes the sucking and discharge of liquid with piston is mobile dependent on stepper motor no longer as existing medical use liquid pump, therefore it at least can effectively overcome power consumption present in existing liquid pump big, the problem of structure is complicated.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of low-power consumption micro liquid pumps.
Background technique
Currently, medical use liquid pump (such as syringe pump) is mainly made of stepper motor and its driver, screw rod and bracket, have
There are screw rod, the nut of reciprocating movement, therefore also referred to as screw rod pumps.Nut is connected with the piston of syringe, and medicine is held in syringe
Liquid.At work, SCM system, which issues control pulse, rotates stepper motor, and stepper motor drives screw rod by rotary motion
Become to move along a straight line, the piston of syringe is pushed to carry out injection infusion, realizes high-precision, the liquid transmission of steady pulse free.
Working principle based on above-mentioned medical use liquid pump stepper motor band piston it is found that medical use liquid pump needs to rely on
At least there is the problem of power consumption is big, and structure is complicated to realize the sucking and discharge of liquid in movement.
Summary of the invention
The embodiment of the present invention in order to solve the problem of power consumption existing for existing liquid pump it is big structure is complicated, creatively mention
For a kind of low-power consumption micro liquid pump.
The embodiment of the present invention provides a kind of low-power consumption micro liquid pump, and the liquid pump includes: liquid cabin；It is arranged described
It is parallel to the piston of the first side wall reciprocating movement in liquid cabin, is provided with the first inlet valve on the piston；It is separately positioned on institute
The second inlet valve and dump valve of liquid cabin the first side wall and second sidewall are stated, the second sidewall and the first side wall are opposite；With
And it is connected to the intelligent titanium alloy driving unit on the piston；Wherein, when the intelligent titanium alloy driving unit is shunk
When deformation, drives the piston mobile with deformation direction is shunk, form pressure difference so that the liquid cabin is inside and outside and drive the suction
Enter valve and/or dump valve is opened, to realize the convection current of liquid inside and outside the liquid cabin.
According to an embodiment of the present invention, the liquid pump further includes being connected to the piston and intelligent titanium alloy driving list
Member thermal insulator between the two, the intelligence titanium close driving unit and are set to outside the liquid cabin；When the intelligent titanium driving is single
When member shrinks deformation, drive the piston with the contraction rectangular movement of deformation by implementing thermal insulator.
According to an embodiment of the present invention, the piston includes two parallel the first sub- pistons and the second sub- piston, institute
It states the first sub- piston and implements to form intermediate bin between the second sub- piston.
According to an embodiment of the present invention, the intelligent titanium alloy driving unit shrinks shape including opposite direction each other
The intelligent titanium alloy driving subelement of first become and the second intelligent titanium alloy drive subelement；Wherein, the described first intelligent titanium closes
Gold driving subelement shrinks deformation along the first direction close to the first side wall；Described second intelligent titanium alloy drives subelement
It is shunk along the second direction far from the first side wall.
According to an embodiment of the present invention, the described first intelligent titanium alloy driving subelement and the first sub- piston connect
It connects, the described second intelligent titanium alloy driving subelement is connect with the described second sub- piston.
According to an embodiment of the present invention, when the intelligent titanium alloy driving unit shrinks deformation, described in drive
Piston is with the movement of deformation direction is shunk, so that the inside and outside convection current for forming pressure difference and realizing liquid of the liquid cabin, comprising: when described
When first intelligent titanium alloy driving subelement shrinks deformation along the first direction close to the first side wall, the work is driven
Plug is mobile with the first direction, so that pressure is less than the outer pressure of the liquid cabin in the liquid cabin, so that the liquid cabin
Outer liquid is injected into the liquid cabin.
According to an embodiment of the present invention, when the intelligent titanium alloy driving unit shrinks deformation, described in drive
Piston is with the movement of deformation direction is shunk, so that the inside and outside convection current for forming pressure difference and realizing liquid of the liquid cabin, comprising: when described
When second intelligent titanium alloy driving subelement shrinks deformation along the second direction far from the first side wall, the work is driven
Plug is mobile with the second direction, so that the liquid cabin internal pressure is powerful in pressure outside the liquid cabin, so that the liquid cabin
Interior liquid flows out to outside the liquid cabin.
According to an embodiment of the present invention, the intelligent titanium alloy driving unit is titanium alloy wire or titanium alloy guide card.
According to an embodiment of the present invention, when the liquid pump surrounding enviroment reach temperature threshold, the intelligence titanium alloy
Driving unit shrinks deformation.
According to an embodiment of the present invention, the value range of the temperature threshold is 40 DEG C~50 DEG C.
According to the present invention includes liquid cabin, and the work that the first side wall reciprocating movement is parallel in the liquid cabin is arranged in
It fills in, is provided with the first inlet valve on the piston, be separately positioned on the liquid cabin the first side wall and second sidewall second inhales
Enter valve and dump valve, the second sidewall and the first side wall are opposite, and the intelligent titanium alloy driving being connected on the piston
The low-power consumption micro liquid pump of unit, when the intelligent titanium alloy driving unit shrinks deformation, drive the piston with
It is mobile to shrink deformation direction, forms pressure difference so that the liquid cabin is inside and outside and the inlet valve and/or dump valve is driven to open, from
And realize the convection current of liquid inside and outside the liquid cabin.In this way, low-power consumption micro liquid pump of the present invention is no longer as existing Medical liquid
Body pump equally realizes the sucking and discharge of liquid with piston movement dependent on stepper motor, therefore at least can effectively overcome existing
There is power consumption present in liquid pump big, the problem of structure is complicated.
It is to be appreciated that the teachings of the present invention does not need to realize whole beneficial effects recited above, but it is specific
Technical solution may be implemented specific technical effect, and other embodiments of the invention can also be realized and not mentioned above
Beneficial effect.
Detailed description of the invention
The following detailed description is read with reference to the accompanying drawings, above-mentioned and other mesh of exemplary embodiment of the invention
, feature and advantage will become prone to understand.In the accompanying drawings, if showing by way of example rather than limitation of the invention
Dry embodiment, in which:
In the accompanying drawings, identical or corresponding label indicates identical or corresponding part.
Fig. 1 shows a composed structure schematic diagram of low-power consumption micro liquid pump of the embodiment of the present invention；
Fig. 2 shows another composed structure schematic diagrames of low-power consumption micro liquid pump of the embodiment of the present invention；
Fig. 3 shows the another composed structure schematic diagram of low-power consumption micro liquid pump of the embodiment of the present invention.
Specific embodiment
The principle and spirit of the invention are described below with reference to several illustrative embodiments.It should be appreciated that providing this
A little embodiments are only to be to make those skilled in the art can better understand that realize the present invention in turn, and not with any side
Formula limits the scope of the invention.On the contrary, it is of the invention more thorough and complete to make for providing these embodiments, and it can incite somebody to action this
The range of invention is completely communicated to those skilled in the art.
The technical solution of the present invention is further elaborated in the following with reference to the drawings and specific embodiments.
Fig. 1 shows a composed structure schematic diagram of low-power consumption micro liquid pump of the embodiment of the present invention.
With reference to Fig. 1, low-power consumption micro liquid pump of the embodiment of the present invention includes liquid cabin 10, is arranged in liquid cabin 10 parallel
The first inlet valve 12 is provided in the piston 11 that the first side wall moves back and forth, on the piston；It is separately positioned on liquid cabin 10
The second inlet valve 12 and dump valve 13 of one side wall and second sidewall, second sidewall and the first side wall are opposite；And it is connected to work
Intelligent titanium alloy driving unit 14 on plug 11.
Here, inlet valve 12 and dump valve 13 are one-way movable valve.
In use, when intelligent titanium alloy driving unit 14 shrinks deformation, band piston 11 is with contraction shape
It changes direction movement, forms pressure difference so that liquid cabin 10 is inside and outside and inlet valve 12 and/or dump valve 13 is driven to open, to realize liquid
The convection current of liquid inside and outside body storehouse 10.In this way, no longer needing to rely on stepper motor using liquid pump as shown in Figure 1 to drive work
Plug is mobile to realize the sucking or discharge of liquid, so that power consumption is saved, and structure is simple, it is easy to operate.
Wherein, intelligent titanium alloy driving unit 14 is titanium alloy wire or titanium alloy guide card.In actual use, liquid pump week
When surrounding environment reaches temperature threshold, the intelligence titanium alloy driving unit 14 shrinks deformation.Here, the temperature threshold
Typically 40 DEG C~50 DEG C of value range.Under special demands, higher temperature threshold can also be set, such as 70 DEG C of left sides
It is right；Also lower temperature threshold can be set, such as -30 DEG C or so.
In an application example, if in advance in process flow, by the titanium alloy as intelligent titanium alloy driving unit 14
Silk or titanium alloy guide card are set as shrinking deformation in the environment of 45 DEG C or so；So locating for the low-power consumption micro liquid pump
The temperature of surrounding enviroment when reaching 45 DEG C or so, one of intelligent titanium alloy driving unit 14 as shown in Figure 1 is along close
The direction of the first side wall shrinks deformation, and band piston 11 is with the shrinkage direction, i.e., mobile close to the direction of the first side wall, makes
The inside and outside formation pressure difference of liquid cabin 10 is obtained, inlet valve 12 is opened, and liquid is drawn into liquid cabin 10 outside liquid cabin 10.
According to an embodiment of the present invention, as shown in Fig. 2, liquid pump further includes being connected to piston 11 and intelligent titanium alloy drive
The thermal insulator 15 between the two of moving cell 14, at this point, intelligent titanium alloy driving unit is set to outside liquid cabin outer 10.In this way, working as
When intelligent titanium alloy driving unit shrinks deformation, it can be moved come band piston 11 with deformation direction is shunk by thermal insulator 15
It is dynamic, to guarantee that the medical fluid in liquid cabin is not influenced by temperature.
According to an embodiment of the present invention, as shown in figure 3, piston includes two the first parallel sub- pistons 111 and second
Sub- piston 112 forms intermediate bin between first sub- piston 111 and the second sub- piston 112.In such manner, it is possible to guarantee in liquid pump
Between be centainly stored with the liquid bought securities with all one's capital in storehouse, to guarantee to pass in and out liquid cabin in the case where piston amount of movement slightly deviation
There is no excessive errors for liquid knots modification, to ensure that the accuracy of liquid pump.
According to an embodiment of the present invention, as shown in figure 3, intelligent titanium alloy driving unit occurs including opposite direction each other
The the first intelligent titanium alloy driving subelement 141 and the second intelligent titanium alloy for shrinking deformation drive subelement 142；Wherein, first
Intelligent titanium alloy driving subelement 141 shrinks deformation along the first direction close to the first side wall；Second intelligent titanium alloy drives
Subunit 142 is shunk along the second direction far from the first side wall.
Wherein, as shown in figure 3, the first intelligent titanium alloy driving subelement 141 is connect with the first sub- piston 111, the second intelligence
Energy titanium alloy driving subelement 142 is connect with the second sub- piston 112.
As shown in figure 3, the realization process of low-power consumption micro liquid pump sucking liquid of the present invention are as follows: when the first intelligent titanium alloy
When driving subelement 141 shrinks deformation along the first direction close to the first side wall, band piston is with the first party
To movement, so that pressure is less than the outer pressure of the liquid cabin in liquid cabin 10, so that the outer liquid of liquid cabin 10 is injected into the liquid
In body storehouse.
As shown in figure 3, the realization process of low-power consumption micro liquid pump discharge liquid of the present invention are as follows: when the second intelligent titanium alloy
When driving subelement 142 shrinks deformation along the second direction far from the first side wall, band piston is with the second party
To movement, so that 10 internal pressure of liquid cabin is powerful in pressure outside the liquid cabin, so that liquid flows out to the liquid in liquid cabin 10
Outside body storehouse.
It include liquid cabin involved in the embodiment of the present invention, setting is parallel to the first side wall in the liquid cabin and back and forth moves
Dynamic piston is separately positioned on the inlet valve and dump valve of the liquid cabin the first side wall and second sidewall, the second sidewall
The low-power consumption micro liquid pump of intelligent titanium alloy driving unit opposite with the first side wall, and being connected on the piston, when
When the intelligence titanium alloy driving unit shrinks deformation, drive the piston mobile with deformation direction is shunk, so that described
Liquid cabin is inside and outside to be formed pressure difference and the inlet valve and/or dump valve is driven to open, to realize liquid inside and outside the liquid cabin
Convection current.It lives in this way, the low-power consumption micro liquid pump no longer drives as existing medical use liquid pump dependent on stepper motor
Plug is mobile to realize the sucking and discharge of liquid, therefore at least can effectively overcome power consumption present in existing liquid pump big, structure
Complicated problem.Moreover, because constituting the titanium alloy material of intelligent titanium alloy driving unit has very strong corrosion resistance, therefore can
To promote the corrosion resistance of entire liquid pump.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or the device that include a series of elements not only include those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including being somebody's turn to do
There is also other identical elements in the process, method of element, article or device.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of low-power consumption micro liquid pump, which is characterized in that the liquid pump includes:
Liquid cabin；
The piston for being parallel to the first side wall reciprocating movement in the liquid cabin is set, is provided with the first sucking on the piston
Valve；
Be separately positioned on the second inlet valve and dump valve of the liquid cabin the first side wall and second sidewall, the second sidewall and
The first side wall is opposite；And
The intelligent titanium alloy driving unit being connected on the piston；
Wherein, when the intelligent titanium alloy driving unit shrinks deformation, the piston is driven to move with deformation direction is shunk
It is dynamic, it forms pressure difference so that the liquid cabin is inside and outside and the inlet valve and/or dump valve is driven to open, to realize the liquid
The convection current of liquid inside and outside storehouse.
2. liquid pump according to claim 1, which is characterized in that the liquid pump further include:
It is connected to the piston thermal insulator between the two with intelligent titanium alloy driving unit, the intelligence titanium closes driving unit and sets
It is placed in outside the liquid cabin；Wherein, when the intelligent titanium driving unit shrinks deformation, the work is driven by thermal insulator
Plug is mobile with deformation direction is shunk.
3. liquid pump according to claim 1, which is characterized in that the piston include two the first parallel sub- pistons and
Second sub- piston forms intermediate bin between the first sub- piston and the second sub- piston.
4. liquid pump according to any one of claims 1 to 3, which is characterized in that the intelligence titanium alloy driving unit packet
Include the first intelligence titanium alloy driving subelement and the second intelligent titanium alloy driving son list that opposite direction each other shrinks deformation
Member；
Wherein, the described first intelligent titanium alloy driving subelement shrinks deformation along the first direction close to the first side wall；Institute
The second intelligent titanium alloy driving subelement is stated to shrink along the second direction far from the first side wall.
5. liquid pump according to claim 4, which is characterized in that the first intelligent titanium alloy driving subelement with it is described
First sub- piston connection, the described second intelligent titanium alloy driving subelement are connect with the described second sub- piston.
6. liquid pump according to claim 4, which is characterized in that when the intelligent titanium alloy driving unit shrinks shape
When change, drive the piston with the movement of deformation direction is shunk, so that inside and outside pair for forming pressure difference and realizing liquid of the liquid cabin
Stream, comprising:
When the described first intelligent titanium alloy driving subelement shrinks deformation along the first direction close to the first side wall,
It is mobile with the first direction to drive the piston, so that pressure is less than the outer pressure of the liquid cabin in the liquid cabin, so that
The outer liquid of the liquid cabin is injected into the liquid cabin.
7. liquid pump according to claim 4, which is characterized in that when the intelligent titanium alloy driving unit shrinks shape
When change, drive the piston with the movement of deformation direction is shunk, so that inside and outside pair for forming pressure difference and realizing liquid of the liquid cabin
Stream, comprising:
When the described second intelligent titanium alloy driving subelement shrinks deformation along the second direction far from the first side wall,
It is mobile with the second direction to drive the piston, so that the liquid cabin internal pressure is powerful in pressure outside the liquid cabin, so that
Liquid flows out to outside the liquid cabin in the liquid cabin.
8. liquid pump according to claim 1, which is characterized in that it is described intelligence titanium alloy driving unit be titanium alloy wire or
Titanium alloy guide card.
9. liquid pump according to claim 1, which is characterized in that when the liquid pump surrounding enviroment reach temperature threshold,
The intelligence titanium alloy driving unit shrinks deformation.
10. liquid pump according to claim 9, which is characterized in that the value range of the temperature threshold is 40 DEG C~50
℃。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650360.0A CN109731178A (en) | 2018-12-31 | 2018-12-31 | A kind of low-power consumption micro liquid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650360.0A CN109731178A (en) | 2018-12-31 | 2018-12-31 | A kind of low-power consumption micro liquid pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109731178A true CN109731178A (en) | 2019-05-10 |
Family
ID=66362956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811650360.0A Pending CN109731178A (en) | 2018-12-31 | 2018-12-31 | A kind of low-power consumption micro liquid pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128686A1 (en) * | 2019-12-27 | 2021-07-01 | 南微医学科技股份有限公司 | Pump head, pressure pump, and pressure pump control method |
| CN115025322A (en) * | 2021-03-03 | 2022-09-09 | 南微医学科技股份有限公司 | Liquid conveying system and stable liquid discharging method |
-
2018
- 2018-12-31 CN CN201811650360.0A patent/CN109731178A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021128686A1 (en) * | 2019-12-27 | 2021-07-01 | 南微医学科技股份有限公司 | Pump head, pressure pump, and pressure pump control method |
| CN115025322A (en) * | 2021-03-03 | 2022-09-09 | 南微医学科技股份有限公司 | Liquid conveying system and stable liquid discharging method |
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Application publication date: 20190510 |
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