CN109519442A - Single tube self-sufficiency device - Google Patents
Single tube self-sufficiency device Download PDFInfo
- Publication number
- CN109519442A CN109519442A CN201910005427.3A CN201910005427A CN109519442A CN 109519442 A CN109519442 A CN 109519442A CN 201910005427 A CN201910005427 A CN 201910005427A CN 109519442 A CN109519442 A CN 109519442A
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- China
- Prior art keywords
- negative pressure
- actuator
- accommodating chamber
- fluid
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 84
- 230000004308 accommodation Effects 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 18
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000003321 amplification Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1404—Characterised by the construction of the motor unit of the straight-cylinder type in clusters, e.g. multiple cylinders in one block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B2015/206—Combined actuation, e.g. electric and fluid actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
- F15B2215/30—Constructional details thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of single tube self-sufficiency devices, comprising: negative pressure actuator (100), fluid actuator (200)；When negative pressure actuator forms negative pressure cavity, fluid actuator forms the accommodating chamber with accommodation space；Under the driving of atmosphere, the volume for enabling to negative pressure actuator to be formed by negative pressure cavity becomes smaller, negative pressure actuator (100) links fluid actuator (200), so that the volume for being formed by the accommodating chamber with accommodation space of fluid actuator (200) becomes smaller, and the fluid in accommodating chamber is discharged；Negative pressure actuator (100), fluid actuator (200) are located in same tube body.
Description
Technical field
The present invention relates to drive areas, and in particular, to single tube self-sufficiency device.
Background technique
Due to the Incoercibility of liquid, the amplification of displacement may be implemented using the difference of fluid pipeline area, here it is
Hydraulic amplification principle of the invention.Due to needing precision actuation system nonmagnetic under certain use environments, at this time based on hydraulic
The drive system of amplification principle just has very big advantage, and remote boot server may be implemented by communication apparatus.Present invention wound
It is new that hydraulic amplification is applied to precision actuation displacement equations, realize it is a kind of it is novel can long-range, noiseless, non-magnetic drive
Motivation reason and method.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of single tube self-sufficiency devices.
A kind of single tube self-sufficiency device provided according to the present invention, comprising: negative pressure actuator 100, fluid actuator 200；
When negative pressure actuator forms negative pressure cavity, fluid actuator forms the accommodating chamber with accommodation space；
Under the driving of atmosphere, the volume for enabling to negative pressure actuator to be formed by negative pressure cavity becomes smaller, negative pressure actuator
100 linkage fluid actuators 200, so that the volume for being formed by the accommodating chamber with accommodation space of fluid actuator 200 becomes
It is small, and the fluid in accommodating chamber is discharged；
Negative pressure actuator 100, fluid actuator 200 are located in same tube body.
Preferably, negative pressure actuator 100, fluid actuator 200 are piston component；
Fluid actuator 200 is located in the rodless cavity 102 of negative pressure actuator.
Preferably, ganged movement between the piston rod 101 of negative pressure actuator, the piston rod 201 of fluid actuator；Negative pressure is held
The rod chamber 103 of row device is connected to atmosphere；
When the rodless cavity 102 of negative pressure actuator forms negative pressure cavity, the rodless cavity 202 of fluid actuator is formed to have and be accommodated
The accommodating chamber in space；
Under the driving of atmosphere, the volume for enabling to the rodless cavity 102 of negative pressure actuator to be formed by negative pressure cavity becomes smaller,
The volume that the rodless cavity 202 of fluid actuator is formed by the accommodating chamber with accommodation space becomes smaller, and makes in accommodating chamber
Fluid discharge.
Preferably, the tail portion of the piston rod 201 of the head connecting fluid actuator of the piston rod 101 of negative pressure actuator；Or
Person is separated between the tail portion of the piston rod 201 on the head and fluid actuator of the piston rod 101 of negative pressure actuator.
Preferably, the piston/cylinder 205 of fluid actuator is fastenedly connected the cavity wall of the rodless cavity 102 of negative pressure actuator.
Preferably, negative pressure actuator 100 is piston component, and fluid actuator 200 is utricule 209；
When the rodless cavity 102 of negative pressure actuator forms negative pressure cavity, the utricule 209 of fluid actuator, which forms to have, accommodates sky
Between accommodating chamber；
Under the driving of atmosphere, the volume for enabling to the rodless cavity 102 of negative pressure actuator to be formed by negative pressure cavity becomes smaller,
The volume that the utricule 209 of fluid actuator 200 is formed by the accommodating chamber with accommodation space becomes smaller, and makes in accommodating chamber
Fluid discharge.
Preferably, negative pressure actuator 100 includes negative pressure cavity rotor 106, negative pressure cavity partition 107；
Fluid actuator 200 includes accommodating chamber rotor 206, accommodating chamber partition 207；
Negative pressure cavity rotor 106, negative pressure cavity partition 107, accommodating chamber rotor 206, accommodating chamber partition 207 are respectively positioned on cylinder 400
In；
Negative pressure cavity rotor 106, negative pressure cavity partition 107 form negative pressure cavity between cylinder 400；
Accommodating chamber rotor 206, accommodating chamber partition 207 form accommodating chamber between cylinder 400；
It interlocks with the rotation between negative pressure cavity rotor 106, accommodating chamber rotor 206.
Preferably, negative pressure actuator 100 is one or more；
Fluid actuator 200 is one or more；
The area equation or non-phase of the negative pressure cavity of negative pressure actuator 100 and the accommodating chamber power transfer surface of fluid actuator 200
Deng.
Preferably, the delivery outlet of fluid actuator 200 is provided with bore regulating device.
Preferably, the linkage includes: synchronous or asynchronous linkage.
Compared with prior art, the present invention have it is following the utility model has the advantages that
Structure of the invention is reasonable, and the function of self-supporting output fluid can be realized using atmospheric pressure.
The advantage of the invention is that；
1. overcome the preparatory liquid of traditional elastic balloon or gas tensioner, the problem of the micro output of retraction extrusion fluid: defeated
Power output decaying, movement driving force, speed is unstable and influences output accuracy.
2. using ubiquitous atmospheric pressure and vacuum space constant force difference push vacuum actor move, while drive and its
The connected antivacuum fluid forces actuator motions end of tache motorice moves synchronously.
3. two kinds of actuator chamber sizes can be according to Optimized Matchings such as output speed, capacity requirements.
4. fluid outlet diameter size is determined according to flows per unit time index is corresponding.
5. negative pressure actuator and fluid actuator can be applied in combination with more than one, can be used one-to-many or multi-to-multi
Combining form.
6. the present invention can be applied in combination as a cell cube, quantitative, the timing for a variety of heterogeneity fluids converge
Collection or matching.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a schematic structural view of Embodiment 1 of the present invention.
Fig. 2 is a schematic structural view of Embodiment 1 of the present invention.
Fig. 3 is a schematic structural view of Embodiment 2 of the present invention.
Fig. 4 is a schematic structural view of Embodiment 2 of the present invention.
Fig. 5 is a schematic structural view of Embodiment 3 of the present invention.
Fig. 6 is a schematic structural view of Embodiment 3 of the present invention.
Fig. 7 is a schematic structural view of Embodiment 4 of the present invention.
Fig. 8 is a schematic structural view of Embodiment 5 of the present invention.
Fig. 9 is a schematic structural view of Embodiment 6 of the present invention.
Figure 10 is a schematic structural view of Embodiment 7 of the present invention.
Figure 11 is a schematic structural view of Embodiment 8 of the present invention.
It is shown in figure:
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
Basic embodiment
A kind of single tube self-sufficiency device provided according to the present invention, comprising: negative pressure actuator 100, fluid actuator 200；
When negative pressure actuator forms negative pressure cavity, fluid actuator forms the accommodating chamber with accommodation space；
Under the driving of atmosphere, the volume for enabling to negative pressure actuator to be formed by negative pressure cavity becomes smaller, negative pressure actuator
100 linkage fluid actuators 200, so that the volume for being formed by the accommodating chamber with accommodation space of fluid actuator 200 becomes
It is small, and the fluid in accommodating chamber is discharged；
Negative pressure actuator 100, fluid actuator 200 are located in same tube body.
Each preference of basic embodiment is illustrated below.
Embodiment 1
As shown in Figure 1 and Figure 2, negative pressure actuator 100, fluid actuator 200 are piston component；Fluid actuator 200
In the rodless cavity 102 of negative pressure actuator.It links between the piston rod 101 of negative pressure actuator, the piston rod 201 of fluid actuator
Movement；The rod chamber 103 of negative pressure actuator is connected to atmosphere；When the rodless cavity 102 of negative pressure actuator forms negative pressure cavity, fluid is held
The rodless cavity 202 of row device forms the accommodating chamber with accommodation space；Under the driving of atmosphere, the nothing of negative pressure actuator is enabled to
The volume that rod cavity 102 is formed by negative pressure cavity becomes smaller, and the rodless cavity 202 of fluid actuator is formed by the appearance with accommodation space
The volume of chamber received becomes smaller, and the fluid in accommodating chamber is discharged.
The tail portion of the piston rod 201 of the head connecting fluid actuator of the piston rod 101 of negative pressure actuator；Either, it bears
It presses and is separated between the head of the piston rod 101 of actuator and the tail portion of the piston rod 201 of fluid actuator.Fluid actuator
Piston/cylinder 205 is fastenedly connected the cavity wall of the rodless cavity 102 of negative pressure actuator.
Specifically, it is another to be less than the other side for the compression area by atmospheric pressure of the side of the rodless cavity 102 of negative pressure actuator
Side, i.e. the end face of the piston rod 101 of negative pressure actuator by the compression area of atmospheric pressure, therefore causes pressure difference and can lead to
Atmospheric pressure is crossed to drive extrusion fluid.
Embodiment 2
It as shown in Figure 3, Figure 4, is the change case of embodiment illustrated in fig. 11.
In the present embodiment, negative pressure actuator 100 is piston component, and fluid actuator 200 is utricule 209；When negative pressure is held
When the rodless cavity 102 of row device forms negative pressure cavity, the utricule 209 of fluid actuator forms the accommodating chamber with accommodation space；Big
Under the driving of gas, the volume for enabling to the rodless cavity 102 of negative pressure actuator to be formed by negative pressure cavity becomes smaller, fluid actuator
The volume that 200 utricule 209 is formed by the accommodating chamber with accommodation space becomes smaller, and the fluid in accommodating chamber is discharged.
Specifically, utricule can be is made of elastic material, is also possible to be made of non-elastic material.
Embodiment 3
It as shown in Figure 5, Figure 6, is the preference of embodiment illustrated in fig. 33.
In the present embodiment, as shown in figure 5, fluid is injected utricule from delivery outlet by external syringe when initial；Withdraw outside
After syringe, as shown in fig. 6, under atmospheric pressure, fluid is discharged by compression in utricule.
Embodiment 4
As shown in Figure 7, Figure 8, in the present embodiment, negative pressure actuator 100 includes negative pressure cavity rotor 106, negative pressure cavity partition
107；Fluid actuator 200 includes accommodating chamber rotor 206, accommodating chamber partition 207；Negative pressure cavity rotor 106, negative pressure cavity partition 107,
Accommodating chamber rotor 206, accommodating chamber partition 207 are respectively positioned in cylinder 400；Negative pressure cavity rotor 106, negative pressure cavity partition 107, cylinder
Negative pressure cavity is formed between 400；Accommodating chamber rotor 206, accommodating chamber partition 207 form accommodating chamber between cylinder 400；Negative pressure cavity turns
It interlocks with the rotation between piece 106, accommodating chamber rotor 206.It is rigidly connected preferably by shaft.
Specifically, as shown in fig. 7, not by injection fluid in accommodating chamber.As shown in figure 8, sucking has stream in accommodating chamber
Body, and vacuum is generated in negative pressure cavity, so that the pressure of the two sides of accommodating chamber rotor 206 in circumferential direction, side are atmospheric pressure,
The other side is vacuum, thus atmospheric pressure can drive shaft rotation, reduce the volume of accommodating chamber, exclude fluid.
The delivery outlet of fluid actuator 200 is provided with bore regulating device.
As shown in figure 9, bore regulating device be extrusion, by squeeze delivery outlet deformation occurs come reconcile liquid discharge
Flow velocity.
As shown in Figure 10, bore regulating device is block piece, and liquid row is reconciled by blocking the circulation area of delivery outlet
Flow velocity out.
As shown in figure 11, bore regulating device is the block piece of the through-hole with a variety of radiuses, by switching different lead to
Hole come reconcile liquid discharge flow velocity.
Further description is carried out to the present invention below.
The linkage can be synchronization, including real-time synchronization moves, synchronous, successively synchronous, amplification is synchronized, reduced in order
The movement of synchronous or late synchronous.Such as the case where setting delayed startup, negative pressure actuator piston rod moves a preset time, so
The piston rod for reaching fluid actuator afterwards realizes contact, then pushes the piston rod movement of fluid actuator.Suitable for gradually dosage
Or it is gradually reduced or different fluid, the case where mixing is added in different time points.
In the description of the present application, it is to be understood that term " on ", "front", "rear", "left", "right", " is erected at "lower"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is orientation based on the figure or position
Relationship is set, description the application is merely for convenience of and simplifies description, rather than the device or element of indication or suggestion meaning are necessary
It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as the limitation to the application.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of single tube self-sufficiency device characterized by comprising negative pressure actuator (100), fluid actuator (200)；
When negative pressure actuator forms negative pressure cavity, fluid actuator forms the accommodating chamber with accommodation space；
Under the driving of atmosphere, the volume for enabling to negative pressure actuator to be formed by negative pressure cavity becomes smaller, negative pressure actuator (100)
It links fluid actuator (200), so that the volume for being formed by the accommodating chamber with accommodation space of fluid actuator (200) becomes
It is small, and the fluid in accommodating chamber is discharged；
Negative pressure actuator (100), fluid actuator (200) are located in same tube body.
2. single tube self-sufficiency device according to claim 1, which is characterized in that negative pressure actuator (100), fluid actuator
It (200) is piston component；
Fluid actuator (200) is located in the rodless cavity (102) of negative pressure actuator.
3. single tube self-sufficiency device according to claim 2, which is characterized in that
Ganged movement between the piston rod (101) of negative pressure actuator, the piston rod (201) of fluid actuator；Negative pressure actuator
Rod chamber (103) is connected to atmosphere；
When the rodless cavity (102) of negative pressure actuator forms negative pressure cavity, the rodless cavity (202) of fluid actuator is formed to have and be accommodated
The accommodating chamber in space；
Under the driving of atmosphere, the volume for enabling to the rodless cavity (102) of negative pressure actuator to be formed by negative pressure cavity becomes smaller, stream
The volume that the rodless cavity (202) of body actuator is formed by the accommodating chamber with accommodation space becomes smaller, and makes in accommodating chamber
Fluid discharge.
4. single tube self-sufficiency device according to claim 2, which is characterized in that the head of the piston rod (101) of negative pressure actuator
The tail portion of the piston rod (201) of portion's connecting fluid actuator；Either, the head of the piston rod (101) of negative pressure actuator and stream
It is separated between the tail portion of the piston rod (201) of body actuator.
5. single tube self-sufficiency device according to claim 2, which is characterized in that the piston/cylinder (205) of fluid actuator is tight
It is solidly connected the cavity wall of the rodless cavity (102) of negative pressure actuator.
6. single tube self-sufficiency device according to claim 1, which is characterized in that negative pressure actuator (100) is piston component, stream
Body actuator (200) is utricule (209)；
When the rodless cavity (102) of negative pressure actuator forms negative pressure cavity, the utricule (209) of fluid actuator, which forms to have, accommodates sky
Between accommodating chamber；
Under the driving of atmosphere, the volume for enabling to the rodless cavity (102) of negative pressure actuator to be formed by negative pressure cavity becomes smaller, stream
The volume that the utricule (209) of body actuator (200) is formed by the accommodating chamber with accommodation space becomes smaller, and makes in accommodating chamber
Fluid discharge.
7. single tube self-sufficiency device according to claim 1, which is characterized in that
Negative pressure actuator (100) includes negative pressure cavity rotor (106), negative pressure cavity partition (107)；
Fluid actuator (200) includes accommodating chamber rotor (206), accommodating chamber partition (207)；
Negative pressure cavity rotor (106), negative pressure cavity partition (107), accommodating chamber rotor (206), accommodating chamber partition (207) are respectively positioned on cylinder
(400) in；
Negative pressure cavity rotor (106), negative pressure cavity partition (107), cylinder form negative pressure cavity between (400)；
Accommodating chamber rotor (206), accommodating chamber partition (207), cylinder form accommodating chamber between (400)；
Negative pressure cavity rotor (106), accommodating chamber rotor interlock with the rotation between (206).
8. single tube self-sufficiency device according to claim 1, which is characterized in that
Negative pressure actuator (100) is one or more；
Fluid actuator (200) is one or more；
The area equation or non-phase of the negative pressure cavity of negative pressure actuator (100) and the accommodating chamber power transfer surface of fluid actuator (200)
Deng.
9. single tube self-sufficiency device according to claim 1, which is characterized in that the delivery outlet of fluid actuator (200) is arranged
There is bore regulating device.
10. single tube self-sufficiency device according to claim 1, which is characterized in that the linkage includes: synchronous or asynchronous
It is dynamic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005427.3A CN109519442B (en) | 2019-01-03 | 2019-01-03 | Single tube self-feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910005427.3A CN109519442B (en) | 2019-01-03 | 2019-01-03 | Single tube self-feeding device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109519442A true CN109519442A (en) | 2019-03-26 |
| CN109519442B CN109519442B (en) | 2024-09-03 |
Family
ID=65797942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910005427.3A Active CN109519442B (en) | 2019-01-03 | 2019-01-03 | Single tube self-feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519442B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491028Y (en) * | 2001-08-10 | 2002-05-15 | 李军生 | constant pressure medicinal liquid transfusion device |
| CN102782275A (en) * | 2009-10-23 | 2012-11-14 | 奥特姆有限公司 | A heat engine |
| US20160151565A1 (en) * | 2013-07-11 | 2016-06-02 | Bayer Healthcare Llc | Fluid container displacement pump |
| CN108837229A (en) * | 2018-06-13 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | A kind of air force medical fluid conveying device |
| CN209340263U (en) * | 2019-01-03 | 2019-09-03 | 杨斌堂 | Single tube self-sufficiency device |
-
2019
- 2019-01-03 CN CN201910005427.3A patent/CN109519442B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2491028Y (en) * | 2001-08-10 | 2002-05-15 | 李军生 | constant pressure medicinal liquid transfusion device |
| CN102782275A (en) * | 2009-10-23 | 2012-11-14 | 奥特姆有限公司 | A heat engine |
| US20160151565A1 (en) * | 2013-07-11 | 2016-06-02 | Bayer Healthcare Llc | Fluid container displacement pump |
| CN108837229A (en) * | 2018-06-13 | 2018-11-20 | 山东威高集团医用高分子制品股份有限公司 | A kind of air force medical fluid conveying device |
| CN209340263U (en) * | 2019-01-03 | 2019-09-03 | 杨斌堂 | Single tube self-sufficiency device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109519442B (en) | 2024-09-03 |
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