CN209361512U - Two-way continuous syringe pump - Google Patents
Two-way continuous syringe pump Download PDFInfo
- Publication number
- CN209361512U CN209361512U CN201821443178.3U CN201821443178U CN209361512U CN 209361512 U CN209361512 U CN 209361512U CN 201821443178 U CN201821443178 U CN 201821443178U CN 209361512 U CN209361512 U CN 209361512U
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- syringe cylinder
- injecting assembly
- controller
- electronic valve
- syringe
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Abstract
The utility model discloses a kind of two-way continuous syringe pumps, it is related to injecting pump technical field, including injecting assembly, driving assembly, changeover module, inductive component and controller, driving assembly is connected with injecting assembly is arranged to drive injecting assembly movement, changeover module is connected with injecting assembly, inductive component is connected with controller to be arranged to move when injecting assembly reaches stroke end to opposite direction, controller is connected with changeover module to be arranged to reach the flow direction of liquid when stroke end is moved to opposite direction in switching injecting assembly when injecting assembly, pass through controller, inductive component and changeover module, which are realized, switches the active that liquid flows to, the set-up mode passively switched compared to check valve, it controls more accurate, solve check valve can not spring back in time generation flow backwards phenomenon cause flow loss, it is micro, because being lower than when low speed injects The closing pressure of check valve generates aerial drainage phenomenon, leads to the problem of metering inaccuracy.
Description
Technical field
The utility model relates to inject pump technical field, and in particular to a kind of two-way continuous syringe pump.
Background technique
Syringe pump is made of syringe, stepper motor, screw rod and bracket etc., has the screw rod moved back and forth, nut, therefore
Also referred to as screw rod pumps.Nut is connected with the piston of syringe, and medical fluid is held in syringe, realizes high-precision, steady pulse free
Liquid transmission.It is respectively arranged with a check valve by the liquid-inlet and liquid outlet in syringe, according to check valve list
To the characteristic of unlatching, the fixed flow direction of liquid is realized.But it is had the disadvantage that using the syringe pump of check valve
1. pumping when high viscosity liquid check valve when piston motion direction changes due to liquid viscosity height, in check valve
Spring can not spring back in time it is non-return, can generate flow backwards phenomenon cause flow loss.
2. the pressure that liquid generates can be lower than the closing pressure of check valve when micro injection since flow is small, flow velocity is low
To generate aerial drainage phenomenon, cause to measure not accurate problem.
Utility model content
The utility model embodiment is designed to provide a kind of two-way continuous syringe pump, infuses in the prior art to solve
It penetrates check valve in pump and can not spring back generation in time and flow backwards when phenomenon causes flow loss, the injection of micro, low speed because being lower than check valve
Closing pressure generate aerial drainage phenomenon, lead to problems such as to measure inaccuracy.
To achieve the above object, the two-way continuous syringe pump of one kind provided by the embodiment of the utility model, including injecting assembly,
Driving assembly, changeover module, inductive component and controller；
The driving component is connected with the injecting assembly is arranged to drive the injecting assembly to move；
The changeover module is connected with the injecting assembly；
The inductive component is connected with the controller to be arranged to reach stroke end to negative side when the injecting assembly
To movement；
The controller is connected with the changeover module to be arranged to reach stroke end to negative side when the injecting assembly
To the flow direction of the liquid switched in the injecting assembly when movement.
Further, the injecting assembly includes the first syringe cylinder, the second syringe cylinder and piston component；
The piston component includes that first piston head, second piston head and the connection first piston head and described second are lived
The piston rod of chock plug；
The first piston head is set in first syringe cylinder；
The second piston head is set in second syringe cylinder；
The driving component is connected with the piston rod by drive rod；
The changeover module is connected with first syringe cylinder and second syringe cylinder respectively.
Further, the driving component include stepper motor, the lead screw being connected with the stepper motor and with it is described
The lead screw pair that lead screw matches；
The lead screw, which is connected with the piston rod by the drive rod, to be arranged under the drive of the stepper motor
It moves synchronously.
Further, the changeover module includes the first switching mechanism and the second switching mechanism；
First switching mechanism is connected with first syringe cylinder；
Second switching mechanism is connected with second syringe cylinder.
Further, first switching mechanism include the first electronic valve, the second electronic valve and with it is described first electricity
The first singlechip that sub- valve and second electronic valve are respectively connected with；
First electronic valve is connected with first syringe cylinder；
Second electronic valve is connected with first syringe cylinder；
The first singlechip is connected with the controller；
Second switching mechanism include third electronic valve, the 4th electronic valve and with the third electronic valve and institute
State the second singlechip that the 4th electronic valve is respectively connected with；
The third electronic valve is connected with second syringe cylinder；
4th electronic valve is connected with second syringe cylinder；
The second singlechip is connected with the controller.
It further, further include rack, the first fixed bracket and the second fixed bracket；
Described first fixed bracket and the second fixed bracket are all set in the rack；
Described first fixed bracket is arranged to fix first syringe cylinder；
Described second fixed bracket is arranged to fix second syringe cylinder；
The driving component, the inductive component and the controller are all set in the rack；
The both ends of the lead screw are set in the described first fixed bracket and the second fixed bracket by bearing.
Further, the inductive component include the first inductive switch being connected with the controller, second induction open
Pass and inductor；
First inductive switch and second inductive switch are all set in rack, and first inductive switch leans on
Nearly described first fixed bracket setting, second inductive switch is close to the described second fixed bracket setting；
The inductor is set to the lead screw pair towards the side of the rack.
Further, the liquid outlet phase of the liquid outlet of first syringe cylinder and second syringe cylinder
It is in parallel；
The fluid intake of first syringe cylinder and the fluid intake of second syringe cylinder are in parallel.
The utility model embodiment has the beneficial effect that
The two-way continuous syringe pump includes injecting assembly, driving assembly, changeover module, inductive component and controller, driving
Component is connected with injecting assembly, and driving injecting assembly moves back and forth, and moves to the stroke of a direction in injecting assembly
When terminal, on the one hand, inductive component sends the signal to controller, when controller receives the signal backward and injecting assembly
The changeover module being connected issues instruction, it is made to switch the flow direction of the liquid in injecting assembly, so that it is kept correctly flow direction, separately
On the one hand, driving assembly drives injecting assembly to move to opposite direction, is realized by controller, inductive component and changeover module to liquid
The switching of the direction of motion of the active switching and injecting assembly of body flow direction, compared to the set-up mode that check valve passively switches, control
Make it is more accurate, solve check valve can not spring back in time generation flow backwards when phenomenon causes flow loss, the injection of micro, low speed because
Closing pressure lower than check valve generates aerial drainage phenomenon, leads to the problem of metering inaccuracy.
Detailed description of the invention
Fig. 1 is the front view of two-way continuous syringe pump provided by the utility model；
Fig. 2 is the cross-sectional view of two-way continuous syringe pump shown in FIG. 1.
Icon: 1- injecting assembly；2- driving assembly；3- changeover module；4- inductive component；5- controller；6- rack；7- is passed
Lever；The first syringe cylinder of 11-；The second syringe cylinder of 12-；13- piston component；131- first piston head；132- second piston
Head；133- piston rod；21- stepper motor；22- lead screw；23- lead screw pair；The first switching mechanism of 31-；The second switching mechanism of 32-；
The first inductive switch of 41-；The second inductive switch of 42-；43- inductor；61- first fixes bracket；62- second fixes bracket.
Specific embodiment
The following examples illustrate the utility model, but is not intended to limit the scope of the present invention.
As shown in Figure 1 to Figure 2, the two-way continuous syringe pump of one kind provided in this embodiment, including injecting assembly 1, driving group
Part 2, changeover module 3, inductive component 4 and controller 5；
Driving assembly 2 is connected with injecting assembly 1 is arranged to that injecting assembly 1 is driven to move；
Changeover module 3 is connected with injecting assembly 1；
Inductive component 4 is connected with controller 5 to be arranged to move when injecting assembly 1 reaches stroke end to opposite direction；
Controller 5 is connected with changeover module 3 to be arranged to cut when injecting assembly 1 reaches when stroke end is moved to opposite direction
Change the flow direction of the liquid in injecting assembly 1.
The two-way continuous syringe pump includes injecting assembly 1, driving assembly 2, changeover module 3, inductive component 4 and controller 5,
Driving assembly 2 is connected with injecting assembly 1, and driving injecting assembly 1 moves back and forth, and moves to one party in injecting assembly 1
To stroke end when, on the one hand, inductive component 4 sends the signal to controller 5, after controller 5 receives the signal
Instruction is issued to the changeover module 3 being connected with injecting assembly 1, so that it is switched the flow direction of the liquid in injecting assembly 1, makes its guarantor
Correct flow direction is held, on the other hand, driving assembly 2 drives injecting assembly 1 to move to opposite direction, passes through controller 5, inductive component
4 and changeover module 3 realize active switching and injecting assembly 1 that liquid is flowed to the direction of motion switching, compared to check valve
The set-up mode passively switched, control it is more accurate, solve check valve can not spring back in time generation flow backwards phenomenon cause flow
Because the closing pressure lower than check valve generates aerial drainage phenomenon when loss, micro, low speed inject, lead to the problem of metering inaccuracy.
Please continue to refer to Fig. 2, wherein injecting assembly 1 includes the first syringe cylinder 11, the second syringe cylinder 12 and piston group
Part 13；
Piston component 13 includes that first piston head 131, second piston head 132 and connection first piston head 131 and second are living
The piston rod 133 of chock plug 132；
First piston head 131 is set in the first syringe cylinder 11；
Second piston head 132 is set in the second syringe cylinder 12；
Driving assembly 2 is connected with piston rod 133 by drive rod 7；
Changeover module 3 is connected with the first syringe cylinder 11 and the second syringe cylinder 12 respectively.
In this embodiment, the first syringe cylinder 11 in injecting assembly 1 and the second syringe cylinder 12 share a piston
Bar 133, when the first syringe cylinder 11 is in liquid discharge state, the second syringe cylinder 12 is in liquid suction condition, when the
When two syringe cylinders 12 are in liquid discharge state, the first syringe cylinder 11 is in liquid suction condition, the first syringe cylinder 11
Switching with the working condition of the second syringe cylinder 12 is to drive piston rod 133 to the first syringe cylinder 11 by driving assembly 2
Or realized to the second syringe cylinder 12 is mobile, compared in existing two-way syringe pump, the first syringe cylinder 11 and the second note
Emitter cylinder 12 is respectively arranged with a piston, by push-and-pull disk connection, has a higher reliability, and changeover module 3 is respectively with the
The flow direction that one syringe cylinder 11 is connected with the second syringe cylinder 12 for switching liquid.
Please continue to refer to Fig. 1 and Fig. 2, wherein driving assembly 2 includes stepper motor 21, is connected with stepper motor 21
Lead screw 22 and the lead screw pair 23 to match with lead screw 22；
Lead screw 22, which is connected with piston rod 133 by drive rod 7, to be arranged to move synchronously under the drive of stepper motor 21.
In this embodiment, stepper motor 21 drives lead screw 22 to make rotating motion, the lead screw for the setting that matches with lead screw 22
Pair 23 is connected with the rotation of lead screw 22, converts linear motion for the rotary motion of lead screw 22, and realize to drive by drive rod 7 and live
Stopper rod 133 moves synchronously, and realizes the sucking or discharge of liquid.
Please continue to refer to Fig. 1 and Fig. 2, wherein changeover module 3 includes the first switching mechanism 31 and the second switching mechanism 32；
First switching mechanism 31 is connected with the first syringe cylinder 11；
Second switching mechanism 32 is connected with the second syringe cylinder 12.
Further, the first switching mechanism 31 include the first electronic valve, the second electronic valve and with the first electronic valve
The first singlechip being respectively connected with the second electronic valve；
First electronic valve is connected with the first syringe cylinder 11；
Second electronic valve is connected with the first syringe cylinder 11；
First singlechip is connected with controller 5；
Second switching mechanism 32 include third electronic valve, the 4th electronic valve and with third electronic valve and the 4th electronics
The second singlechip that valve is respectively connected with；
Third electronic valve is connected with the second syringe cylinder 12；
4th electronic valve is connected with the second syringe cylinder 12；
Second singlechip is connected with controller 5.
In this embodiment, the discharge and sucking of the liquid in the first syringe cylinder 11 are by the first electronic valve and
Two electronic valves realize, when the first electronic valve in the open state, the second electronic valve is in close state, be in liquid
The state of body discharge, piston rod 133 at this time is mobile to the first syringe cylinder 11 under the drive of stepper motor 21, by the first note
Liquid in emitter cylinder 11 squeezes out, and the second syringe cylinder 12 at this time is in liquid suction condition, i.e. the 4th electronic valve is in
Opening state, third electronic valve are in close state, conversely, work as the second electronic valve in the open state, the first electronics
Valve is in close state, and the state in liquid sucking, piston rod 133 at this time is under the drive of stepper motor 21 to second
Syringe cylinder 12 is mobile, and the liquid in the second syringe cylinder 12 is squeezed out, i.e. third electronic valve is in the open state, the 4th electricity
Sub- valve is in close state, and the first syringe cylinder 11 at this time is in liquid suction condition.First electronic valve and the second electricity
The switching of sub- valve is to receive to realize from the switching signal that inductive component 4 is sent to controller 5 by first singlechip, together
Reason, third electronic valve and the 4th electronic valve are to receive to be sent to controller 5 from inductive component 4 by second singlechip
What switching signal was realized.
Please continue to refer to Fig. 1, wherein further include the fixed bracket 61 of rack 6, first and the second fixed bracket 62；
First fixed bracket 61 and the second fixed bracket 62 are all set in rack 6；
First fixed bracket 61 is arranged to fix the first syringe cylinder 11；
Second fixed bracket 62 is arranged to fix the second syringe cylinder 12；
Driving assembly 2, inductive component 4 and controller 5 are all set in rack 6；
The both ends of lead screw 22 are set in the first fixed bracket 61 and the second fixed bracket 62 by bearing.
Further, inductive component 4 includes the first inductive switch 41 being connected with controller 5, the second inductive switch 42
With inductor 43；
First inductive switch 41 and the second inductive switch 42 are all set in rack 6, and the first inductive switch 41 is close to
One fixed bracket 61 is arranged, and the second inductive switch 42 is arranged close to the second fixed bracket 62；
Inductor 43 is set to lead screw pair 23 towards the side of rack 6.
In this embodiment, it is accurately controlled to further enhance, passes through the first inductive switch 41, the second inductive switch
42 and inductor 43 realize to the switching between the positive and negative rotation and electronic valve of stepper motor 21, specifically, when inductor 43 to
When first inductive switch 41 is mobile, state is discharged in liquid in the first syringe cylinder 11, the first electronic valve at this time is in
When opening state, the second electronic valve is in close state, and is in liquid suction condition in the second syringe cylinder 12, and at this time the
Three electronic valves are in close state, and the 4th electronic valve is in the open state, and when reaching stroke end, controller 5 is received
Signal from the first inductive switch 41 changes the rotation direction of stepper motor 21, drives piston rod 133 to the second syringe
12 directions of cylinder are mobile, meanwhile, signal is sent to first singlechip, closes the first electronic valve, the second electronic valve is opened, the
One injection tube is switched to liquid suction condition, sends signal to second singlechip, third electronic valve is opened, the 4th electronic valve
It closes, the second syringe cylinder 12 is switched to liquid discharge state, and when moving to the stroke end of other direction, controller 5 is connect
The signal from the second inductive switch 42 is received, the rotation direction of stepper motor 21 is changed, drives piston rod 133 to the first injection
11 direction of device cylinder is mobile, meanwhile, signal is sent to first singlechip, opens the first electronic valve, the second electronic valve is closed,
First injection tube is switched to liquid discharge state, sends signal to second singlechip, third electronic valve is closed, the 4th electronic valve
Door is opened, and the first syringe cylinder 11 is switched to liquid discharge state, this is a cyclic process.
Please continue to refer to Fig. 1 and Fig. 2, wherein the liquid outlet of the first syringe cylinder 11 and the second syringe cylinder 12
Liquid outlet is in parallel；
The fluid intake of first syringe cylinder 11 and the fluid intake of the second syringe cylinder 12 are in parallel.
In this embodiment, it can be achieved that the uninterrupted flowing of liquid.
Although above having made detailed description to the utility model with generality explanation and specific embodiment,
On the basis of the utility model, it can be made some modifications or improvements, this is apparent to those skilled in the art
's.Therefore, these modifications or improvements on the basis of without departing from the spirit of the present invention, belong to the utility model and want
Seek the range of protection.
Claims (8)
1. a kind of two-way continuous syringe pump, which is characterized in that including injecting assembly, driving assembly, changeover module, inductive component and
Controller；
The driving component is connected with the injecting assembly is arranged to drive the injecting assembly to move；
The changeover module is connected with the injecting assembly；
The inductive component is connected with the controller to be arranged to transport when the injecting assembly reaches stroke end to opposite direction
It is dynamic；
The controller is connected with the changeover module to be arranged to transport when the injecting assembly reaches stroke end to opposite direction
Switch the flow direction of the liquid in the injecting assembly when dynamic.
2. two-way continuous syringe pump according to claim 1, which is characterized in that the injecting assembly includes the first syringe
Cylinder, the second syringe cylinder and piston component；
The piston component includes first piston head, second piston head and the connection first piston head and the second piston head
Piston rod；
The first piston head is set in first syringe cylinder；
The second piston head is set in second syringe cylinder；
The driving component is connected with the piston rod by drive rod；
The changeover module is connected with first syringe cylinder and second syringe cylinder respectively.
3. two-way continuous syringe pump according to claim 2, which is characterized in that the driving component include stepper motor,
The lead screw being connected with the stepper motor and the lead screw pair to match with the lead screw；
The lead screw be connected with the piston rod by the drive rod be arranged to it is synchronous under the drive of the stepper motor
Movement.
4. two-way continuous syringe pump according to claim 2, which is characterized in that the changeover module includes the first switching machine
Structure and the second switching mechanism；
First switching mechanism is connected with first syringe cylinder；
Second switching mechanism is connected with second syringe cylinder.
5. two-way continuous syringe pump according to claim 4, which is characterized in that first switching mechanism includes the first electricity
Sub- valve, the second electronic valve and the first monolithic being respectively connected with first electronic valve and second electronic valve
Machine；
First electronic valve is connected with first syringe cylinder；
Second electronic valve is connected with first syringe cylinder；
The first singlechip is connected with the controller；
Second switching mechanism include third electronic valve, the 4th electronic valve and with the third electronic valve and described
The second singlechip that four electronic valves are respectively connected with；
The third electronic valve is connected with second syringe cylinder；
4th electronic valve is connected with second syringe cylinder；
The second singlechip is connected with the controller.
6. two-way continuous syringe pump according to claim 3, which is characterized in that further include rack, the first fixed bracket and
Second fixed bracket；
Described first fixed bracket and the second fixed bracket are all set in the rack；
Described first fixed bracket is arranged to fix first syringe cylinder；
Described second fixed bracket is arranged to fix second syringe cylinder；
The driving component, the inductive component and the controller are all set in the rack；
The both ends of the lead screw are set in the described first fixed bracket and the second fixed bracket by bearing.
7. two-way continuous syringe pump according to claim 6, which is characterized in that the inductive component includes and the control
The first inductive switch, the second inductive switch and the inductor that device is connected；
First inductive switch and second inductive switch are all set in rack, and first inductive switch is close to institute
The first fixed bracket setting is stated, second inductive switch is close to the described second fixed bracket setting；
The inductor is set to the lead screw pair towards the side of the rack.
8. two-way continuous syringe pump according to claim 2, which is characterized in that the liquid of first syringe cylinder is discharged
The liquid outlet of mouth and second syringe cylinder is in parallel；
The fluid intake of first syringe cylinder and the fluid intake of second syringe cylinder are in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821443178.3U CN209361512U (en) | 2018-09-04 | 2018-09-04 | Two-way continuous syringe pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821443178.3U CN209361512U (en) | 2018-09-04 | 2018-09-04 | Two-way continuous syringe pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209361512U true CN209361512U (en) | 2019-09-10 |
Family
ID=67823406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821443178.3U Active CN209361512U (en) | 2018-09-04 | 2018-09-04 | Two-way continuous syringe pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209361512U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486246A (en) * | 2019-08-16 | 2019-11-22 | 杭州师范大学钱江学院 | A kind of bidirectional measuring pump and its pump liquid method |
| CN110860008A (en) * | 2019-11-04 | 2020-03-06 | 珠海英智科技有限公司 | Infusion system and method |
| CN110966178A (en) * | 2019-12-27 | 2020-04-07 | 南微医学科技股份有限公司 | Pump head, pressure pump and pressure pump control method |
| CN111021685A (en) * | 2019-12-19 | 2020-04-17 | 广东博智林机器人有限公司 | Feeding system and coating robot with same |
| CN113294310A (en) * | 2021-05-28 | 2021-08-24 | 合肥工业大学 | Automatic water-replenishing pressure controller with bidirectional pressurization function |
-
2018
- 2018-09-04 CN CN201821443178.3U patent/CN209361512U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486246A (en) * | 2019-08-16 | 2019-11-22 | 杭州师范大学钱江学院 | A kind of bidirectional measuring pump and its pump liquid method |
| CN110860008A (en) * | 2019-11-04 | 2020-03-06 | 珠海英智科技有限公司 | Infusion system and method |
| CN110860008B (en) * | 2019-11-04 | 2022-02-18 | 深圳英瑞生物科技有限公司 | Infusion system and method |
| CN111021685A (en) * | 2019-12-19 | 2020-04-17 | 广东博智林机器人有限公司 | Feeding system and coating robot with same |
| CN110966178A (en) * | 2019-12-27 | 2020-04-07 | 南微医学科技股份有限公司 | Pump head, pressure pump and pressure pump control method |
| 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 |
| CN113294310A (en) * | 2021-05-28 | 2021-08-24 | 合肥工业大学 | Automatic water-replenishing pressure controller with bidirectional pressurization function |
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