CN206246303U - A kind of double plunger high pressure injector - Google Patents
A kind of double plunger high pressure injector Download PDFInfo
- Publication number
- CN206246303U CN206246303U CN201621165075.6U CN201621165075U CN206246303U CN 206246303 U CN206246303 U CN 206246303U CN 201621165075 U CN201621165075 U CN 201621165075U CN 206246303 U CN206246303 U CN 206246303U
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- China
- Prior art keywords
- plunger
- high pressure
- screw
- ball
- double
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- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a kind of double plunger high pressure injector, including two groups of high pressure syringe pumps, each group includes plunger case, ball-screw, antithesis gear, two microswitches, mounting bracket, plunger in the plunger case is hollow core structures, the screw of the ball-screw is fixedly connected with plunger, a microswitch is provided with the top of the plunger, antithesis gear is installed on the leading screw of the ball-screw, the plunger case, ball-screw and another microswitch are each attached on mounting bracket, the switching of stream is realized between the plunger case of two groups of high pressure syringe pumps by four-way reversing valve, the antithesis gear of two groups of high pressure syringe pumps is rotated by driving stepper motor.The output of the utility model flow pressure is higher, compact conformation, while convenient operating maintenance.
Description
Technical field
The utility model is related to inject technical field of medical equipment, more particularly to a kind of double plunger high pressure injector.
Background technology
Syringe pump is one of key foundation element of all kinds of high-pressure fluid induction systems, and its major function is for system is provided
Enough pressure, exact flow rate, the high-pressure liquid medium of steady pulsation, to meet the scientific experimentation of the industries such as oil, chemical industry, pharmacy
Equipment Requirement.The continuous maturation of external double plunger high pressure micro syringe pump technology, its range of application gradually expands, at the same in the presence of by
Walk the trend developed to high-pressure trend, multi-plunger gradient type direction.There are the U.S. Quizix and isco in most representational company, its
General principle is all to use pneumatic operated valve and magnetic valve or direct two import and export paths for combining simplex pump of solenoid valve control,
The outlet pressure of pumping system is set to keep pulse free.But its product delivery cycle is long, expensive, and it is difficult to change accessory.
At present, the range of flow of domestic main flow high pressure syringe pump be 0~1000ml/h, output pressure scope be 0.1~
10Mpa, with the continuous progress of industrial technology, this syringe pump can not increasingly meet market to big flow, high pressure, constant pressure,
The demand of high accuracy output.
Utility model content
In order to solve the above technical problems, the utility model is provided, a kind of pressure is high, compact conformation, the height of convenient operating maintenance
Pressure injection injection device.
The technical scheme that the utility model is used for：
A kind of double plunger high pressure injector, including two groups of high pressure syringe pumps, each group includes plunger case, ball wire
Thick stick, antithesis gear, two microswitches, mounting bracket, the plunger in the plunger case are hollow core structures, the screw of the ball-screw
It is fixedly connected with plunger, a microswitch is provided with the top of the plunger, antithesis tooth is installed on the leading screw of the ball-screw
Wheel, the plunger case, ball-screw and another microswitch are each attached on mounting bracket, the plunger of two groups of high pressure syringe pumps
The switching of stream is realized between cylinder by four-way reversing valve, the antithesis gear of two groups of high pressure syringe pumps is by stepping electricity
Machine drives rotation.
Preferably, the plunger case is arranged in vertical direction, air bleeding valve is provided with the top of the plunger cylinder.
Preferably, the guide post for being respectively provided on two sides with a setting of the plunger case, the guide post is by lifting arm
It is connected with the screw in the plunger.
Preferably, fairlead is installed in the lifting arm, group between the guide post that the fairlead and both sides are erect
Into sliding friction pair.
Preferably, the mounting bracket includes upper plate, median septum and lower shoe, the upper plate stationary housing and guiding
Bar, the median septum fixes ball-screw and stepper motor, and the lower shoe is used as high pressure syringe pump pump housing base.
Preferably, another microswitch being engaged with the microswitch of the plunger base is arranged on median septum,
The median septum is arranged on the lower limit position of plunger motion.
Preferably, the V-seal ring that polytetrafluoroethylene (PTFE) material is provided between the plunger case and plunger is sealed.
Preferably, being provided with a pair of gear pairs of regulation rotating speed between the antithesis gear and stepper motor.
Compared with prior art, the utility model has the advantages that：
1st, the double injection pump that the utility model is set using combination, realizes that two syringe pumps are controlled respectively by control system
System, is capable of achieving the timesharing injection control of liquid medium, while twin columns plug structure, the control to flow is also more steady, output pressure
Power is bigger, can reach 25Mpa.
2nd, it is described in the utility model that two groups of syringe pumps, ball screw and stepper motors are arranged on mounting bracket, install
Frame uses stepped construction, saves the area of occupation of land so that the overall structure of device is compacter, while double plunger high-pressure injection
The plunger cylinder of pump arranges vertically, is also beneficial to the gas in discharging liquid.
3rd, two plunger cases of double plunger high pressure syringe pump described in the utility model share a liquid sucting port and a discharge opeing
Mouthful, the switching of stream is realized by four-way reversing valve, the remolding sensitivity of four-way reversing valve is higher, and pressure set-point fluctuation is small,
Control to flow is also more steady, and Operation and Maintenance is also convenient for.
Brief description of the drawings
Fig. 1 is the structural plan of the utility model high pressure injector；
Fig. 2 is the side view of the utility model high pressure injector；
Fig. 3 is the fundamental diagram of four-way reversing valve described in the utility model；
Fig. 4 is the fundamental diagram that four-way reversing valve described in Fig. 3 is rotated by 90 °.
Shown in figure：1st, plunger case, 2, plunger, 3, ball screw, 4, antithesis gear, 5, microswitch, 6, mounting bracket,
6.1st, upper plate, 6.2, median septum, 6.3, lower shoe, 7, stepper motor, 8, four-way reversing valve, 9, air bleeding valve, 10, guide post,
11st, lifting arm, 12, fairlead, 13, little gear, 14, exhaust outlet.
Specific embodiment
In order that the purpose, technical scheme and advantage of the utility model embodiment are clearer, below in conjunction with this practicality
Technical scheme in new embodiment carries out clear, complete description, it is clear that described embodiment is portion of the present utility model
Divide embodiment, rather than whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art are not paying
The every other embodiment obtained on the premise of creative work, belongs to protection domain of the present utility model.
As shown in Figures 1 to 4, the present embodiment provides a kind of double plunger high pressure injector, including two groups of high pressure syringe pumps, often
One group includes plunger case 1, ball-screw 3, antithesis gear 4, two microswitches 5, mounting bracket 6, the post in the plunger case 1
Plug 2 is hollow core structures, and the screw of the ball-screw 3 is fixedly connected with plunger 2, and screw mandrel and the gear of ball-screw 3 pass through key
Connection.The top of the plunger 2 is provided with a microswitch 5 (being sign in figure), and it is right to be provided with the leading screw of the ball-screw 3
Even gear 4, the plunger case 1, ball-screw 3 and another microswitch 5 are each attached on mounting bracket 6, two groups of high pressure syringe pumps
Two plunger cases 1 share a liquid sucting port and a leakage fluid dram, the switching of stream, four-way are realized by four-way reversing valve 8
Reversal valve 8 is driven by stepper motor 7,90 ° of Spool rotating during commutation, realizes the switching of liquid sucting port and leakage fluid dram.
During work, 7 driving pinion of the stepper motor 13 drives two groups of antithesis gears 4 synchronous to the present embodiment
Rotation, and two groups of direction of rotation contrasts of antithesis gear 4.Two groups of antithesis gears 4 drive the screw mandrel on ball-screw 3 respectively
Rotation is kept, now, the screw on ball-screw 3 then moves along a straight line on the direction of plunger 2, the control plunger 2 of ball-screw 3
Moved up and down in plunger case 1.Illustrated by taking one of plunger case 1 as an example in the present embodiment, when plunger 2 is upper
During rising, rodless cavity enters horizontal high voltage discharge opeing in plunger case 1, and after plunger 2 rises to extreme position, trigger column plug cylinder 1 is pushed up
The microswitch 5 in portion, now, controls stepper motor 7 to reversely rotate by PLC, now, the plunger 2 in plunger case 1
Decline, meanwhile, 90 ° of 8 Spool rotating of four-way reversing valve, now, rodless cavity carries out low pressure imbibition in plunger case 1, until decline touching
Microswitch 5 on hair installing plate 6, so go round and begin again reciprocating motion.Another group of plunger case 1 then transport by synchronous backward
It is dynamic, realize the continuous-stable output of liquid medium flow.
As shown in Fig. 2 as the preferred of the present embodiment, in the guide post 10 for being respectively provided on two sides with a setting of plunger case 1,
The guide post 10 is connected by lifting arm 11 with the screw in plunger 2, and fairlead 12, the guiding are provided with lifting arm 11
Set 12 is slided in the guide post 10 that both sides are erect.When the screw on ball-screw 3 drives plunger 2 moving along a straight line up and down
When, lifting arm 11 can move along a straight line with plunger 2 on guide post 10, and guide post 10 provides guiding for the motion of plunger 2,
Meanwhile, fairlead 12 is installed in lifting arm 11, constituting slip between the guide post 10 that the fairlead 12 and both sides are erect rubs
Wipe secondary, can effectively limit the relative rotation on the screw mandrel of screw, it is ensured that uniform and stable motion of the plunger 2 in cylinder body.
Further, the plunger case 1 is conducive to the gas in discharging liquid, in plunger case in vertical direction arrangement
Top is provided with air bleeding valve 9 because liquid medium is generally all dissolved with certain air, and air solubility with temperature
Raise and reduce, gas is gradually separated from liquid medium so during circulation, and gradually gets together to be formed
Big bubble even gas column, by the automatic discharge from exhaust outlet 14 by gas of air bleeding valve 9.
As the preferred of the present embodiment, in order to overcome the leakage between plunger case 1 and plunger 2, in plunger case 1 and plunger 2
Between using polytetrafluoroethylene (PTFE) material V-seal ring, be characterized in that output end pressure is bigger, the side force of V-seal ring is got over
Greatly, plunger auxiliary air gap is smaller, good sealing effect；During low pressure, sealed clearance of plunger pair is big, reduces fretting wear.Rationally design V-type
Ring id tolerance fit dimension precision, has reached good high pressure seal result.
As illustrated in fig. 1 and 2, as the preferred of the present embodiment, the structure of mounting bracket 6, it can be made up of three parts, by upper
Arrive down includes upper plate 6.1, median septum 6.2 and lower shoe 6.3 successively, and upper plate 6.1 is arranged on the bottom of the cylinder body of plunger case 1,
For the cylinder body of fixed column plug cylinder 1.The both sides that the median septum 6.2 is arranged on ball-screw 3 are used to fix ball-screw 3,
Stepper motor 7 is installed, guide post 10 is fixed between upper plate 6.1 and median septum 6.2, the peace of median septum 6.2 on median septum 6.2
Holding position be just arranged on plunger 2 motion lower limit position, when plunger 2 moves to lower limit position, just trigger in every
The microswitch 5 installed on plate 6.2.Lower shoe 6.3 is arranged on the bottom of high pressure syringe pump, used as pump housing base and then fixed rolling
Ballscrew 3.
Further, the little gear 13 of regulation rotating speed, stepper motor 7 are provided between the antithesis gear 4 and stepper motor 7
The power of output passes to two groups of antithesis gears 4 by little gear 13, and the synchronous backward of two groups of antithesis gears 4 rotarily drives
Ball-screw 3 moves along a straight line on the direction that plunger 2 is moved.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (8)
1. a kind of double plunger high pressure injector, it is characterised in that：Including two groups of high pressure syringe pumps, each group includes plunger
Cylinder, ball-screw, antithesis gear, two microswitches, mounting bracket, the plunger in the plunger case are hollow core structures, the ball
The screw of leading screw is fixedly connected with plunger, and a microswitch is provided with the top of the plunger, is pacified on the leading screw of the ball-screw
Equipped with antithesis gear, the plunger case, ball-screw and another microswitch are each attached on mounting bracket, two groups of pressure injections high
Penetrate between the plunger case of pump and the switching of stream is realized by four-way reversing valve, the antithesis gear of two groups of high pressure syringe pumps is equal
Rotated by driving stepper motor.
2. double plunger high pressure injector according to claim 1, it is characterised in that：The plunger case is in vertical direction cloth
Put, air bleeding valve is provided with the top of the plunger cylinder.
3. double plunger high pressure injector according to claim 1, it is characterised in that：The both sides of the plunger case set respectively
There is the guide post of a setting, the guide post is connected by lifting arm with the screw in the plunger.
4. double plunger high pressure injector according to claim 3, it is characterised in that：Guiding is installed in the lifting arm
Sliding friction pair is constituted between the guide post that set, the fairlead and both sides are erect.
5. double plunger high pressure injector according to claim 4, it is characterised in that：The mounting bracket include upper plate,
Median septum and lower shoe, the upper plate stationary housing and guide post, the median septum fix ball-screw and stepper motor, institute
Lower shoe is stated as high pressure syringe pump pump housing base.
6. double plunger high pressure injector according to claim 3, it is characterised in that：Fine motion with the plunger base is opened
Another microswitch that pass is engaged is arranged on median septum, and the median septum is arranged on the lower limit position of plunger motion.
7. double plunger high pressure injector according to claim 1, it is characterised in that：Set between the plunger case and plunger
The V-seal ring for having polytetrafluoroethylene (PTFE) material is sealed.
8. double plunger high pressure injector according to claim 1, it is characterised in that：The antithesis gear and stepper motor
Between be provided with a pair of little gears of regulation rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165075.6U CN206246303U (en) | 2016-10-25 | 2016-10-25 | A kind of double plunger high pressure injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621165075.6U CN206246303U (en) | 2016-10-25 | 2016-10-25 | A kind of double plunger high pressure injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206246303U true CN206246303U (en) | 2017-06-13 |
Family
ID=58996985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621165075.6U Expired - Fee Related CN206246303U (en) | 2016-10-25 | 2016-10-25 | A kind of double plunger high pressure injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206246303U (en) |
-
2016
- 2016-10-25 CN CN201621165075.6U patent/CN206246303U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170613 Termination date: 20181025 |