CN208900300U - A kind of booster-type preparative liquid chromatography infusion pump - Google Patents
A kind of booster-type preparative liquid chromatography infusion pump Download PDFInfo
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- CN208900300U CN208900300U CN201821759400.0U CN201821759400U CN208900300U CN 208900300 U CN208900300 U CN 208900300U CN 201821759400 U CN201821759400 U CN 201821759400U CN 208900300 U CN208900300 U CN 208900300U
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- booster
- liquid chromatography
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- preparative liquid
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Abstract
The utility model discloses a kind of booster-type preparative liquid chromatography infusion pump, it is related to pump technical field of being infused, including rack, camshaft, worm shaft, pump head；The camshaft and worm shaft are mounted in rack；It is fixedly installed with multiple cams on the camshaft, and is also equipped with worm gear on camshaft；The worm screw engaged with worm gear is fixedly installed on the worm shaft；The pump head be it is multiple, the plunger of reciprocating movement is mounted in multiple pump heads, one end of multiple plungers extends outwardly, and the elongated end of multiple plungers is respectively connected with piston, and the head of multiple pistons is connected to the outer rim of multiple cams one by one respectively.The utility model operation is more steady, it not only contributes to the control of pulse, and effectively inhibits the generation of mechanical noise, the utility model is made also to can guarantee the steady of pressure and flow in longtime running, and then inhibiting the generation of flow pulsation, it is very slight that whole equipment runs noise.
Description
Technical field
The utility model relates to pump technical fields of being infused, and are infused in particular to a kind of booster-type preparative liquid chromatography
Pump.
Background technique
The solvent delivery pump that common preparative liquid chromatography separation system uses, is divided in the form of power transmission and is taken mostly
Direct-drive type transmission and belt-type are driven two kinds of tactic patterns.
The driving power of direct-drive type transmission mode is that a stepper motor drives a screw rod to make reciprocating, and advantage is
Structure is simple, be readily produced, manufacturing cost is cheap, there are the shortcomings that infusion pulse be that clearly, running noises are very big, though
Screw rod quantity can so be increased to further decrease pulse, but the power source of multifibres bar is multiple independent stepper motors, mutually
Between phase cooperation it is extremely difficult, be not only difficult to really eliminate the presence of flow pulsation, while also bigger machinery can be brought to make an uproar
Sound, the volume and electrical power of infusion pump also can be bigger.
The driving power of belt-type transmission mode is that a stepper motor drives two cams to make reciprocating, and advantage is same
Sample is that structure is simple, be readily produced, manufacturing cost is cheap, and due to using a plurality of belt-type transmission mode, is passed compared to direct-drive type
After dynamic model formula, mechanical noise are controlled, but the duration of runs has been grown, belt fever generates deformation, and power output precision is significantly
It reduces, thus bring flow pulsation is still clearly.
Therefore, develop that a kind of low noise, torque is big, pulse is small, delivery pump with high accuracy has seemed too impatient to wait.
Utility model content
The purpose of this utility model is to provide a kind of booster-type preparative liquid chromatography infusion pumps, keep preparative liquid chromatography defeated
The torque range of liquid pump is bigger, and pressure is higher, and operation flatness is more preferable, and control precision is higher, and response speed is faster.
To realize the utility model aim, the technical solution of use are as follows: a kind of booster-type preparative liquid chromatography infusion pump, packet
Including rack, camshaft, worm shaft, pump head；The camshaft and worm shaft are mounted in rack；It is fixed on the camshaft
Multiple cams are installed, and are also equipped with worm gear on camshaft；The worm screw engaged with worm gear is fixedly installed on the worm shaft；
The pump head be it is multiple, the plunger of reciprocating movement is mounted in multiple pump heads, one end of multiple plungers extends outwardly, and more
A plunger elongated end is respectively connected with piston, and the head of multiple pistons is connected to the outer rim of multiple cams one by one respectively.
Further, the worm gear is located at the middle part of worm gear shaft, and multiple cam symmetry arrangements are in the two sides of worm gear.
Further, the cam is four, and four cams are successively arranged on the worm gear shaft with 90 ° for phase difference.
Further, the head of the piston is also equipped with guiding rolling bearing, and be oriented to the surface of rolling bearing with it is convex
Wheel contacts.
Further, the pump head is located at outside rack, and the tail portion of piston extends outwardly through rack, and passes through connection with plunger
The connection of axis device.
Further, mounting base is installed on the outer wall of the rack, pump head is mounted in mounting base.
Further, the mounting base is L-type.
Further, the pump head and plunger are ceramic material, and diameter of plunger is 4.762mm~56.4mm.
Further, it being fixedly installed with servo motor outside the rack, one end of worm shaft extends outwardly through rack, and
The elongated end of worm gear shaft and the output axis connection of servo motor.
Further, the worm shaft is vertical with camshaft, and the output shaft of worm shaft and servo motor passes through shaft coupling
Connection.
The utility model has the beneficial effects that
The utility model uses Worm-gear type transmission mode, realizes that torque increases and generates required infusion height and press
Power；Meanwhile being made rotating motion using worm and gear band moving cam, keep operation more steady, not only contributes to the control of pulse, and
The generation for effectively inhibiting mechanical noise makes the utility model also can guarantee the steady of pressure and flow in longtime running, and then presses down
The generation of flow pulsation processed, it is very slight that whole equipment runs noise.
The utility model, as power source, keeps torque range bigger using servo motor, and operation flatness is more preferable, control essence
Du Genggao, fast response time, vibration resistance, to preferably support the utility model.
Detailed description of the invention
Fig. 1 is the main view of pressurized construction solvent delivery pump provided by the utility model；
Fig. 2 is the top view of pressurized construction solvent delivery pump provided by the utility model.
Label and corresponding parts title in attached drawing:
1- pump head, 2- plunger, 3- mounting base, 4- piston, 5- cam, 6- camshaft, 7- worm screw, 8- worm gear, 9- servo electricity
Machine, 10- worm shaft, 11- rack, 12, guiding rolling bearing.
Specific embodiment
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
A kind of booster-type preparative liquid chromatography infusion pump provided by the utility model shown by Fig. 1, Fig. 2, including rack
11, camshaft 6, worm shaft 10, pump head 1；The camshaft 6 and worm shaft 10 are rotatably installed in rack 11；The camshaft 6
On be fixedly installed with multiple cams 5, and worm gear 8 is also equipped on camshaft 6；It is fixedly installed on the worm shaft 10 and worm gear
The worm screw 7 of 8 engagements；The pump head 1 be it is multiple, the plunger 2 of reciprocating movement is mounted in pump head 1, one end of multiple plungers 2 is equal
Extend outwardly, and the elongated end of multiple plungers 2 is respectively connected with piston 4, and the head of multiple pistons 4 be connected to one by one respectively it is multiple
The outer rim of cam 5.
The both ends of the camshaft 6 are rotatably installed on two opposite side walls of rack 11, the rotation of 10 one end of worm shaft
It is mounted in rack 11, in order to make worm shaft 10 in rotation, worm shaft 10 is more steady, can also be by the both ends of worm shaft 10 point
It is not rotatably installed in the two side walls of rack 11.The camshaft 6 is located at the top of worm shaft 10, and worm gear 8 and multiple teeth
Wheel shaft, which is connected by key, to be fixedly mounted on camshaft 6；The worm screw 7, which is connected by key, to be fixedly set on worm shaft 10,
It is engaged by worm screw 7 with worm gear 8, makes worm shaft 10 in rotation, the worm screw 7 on worm shaft 10 can directly drive worm gear 8 to carry out
Rotation, since worm gear 8 and camshaft 6 are fixed, so that the cam 5 on camshaft 6 and camshaft 6 be made to be rotated.The pump head 1
Quantity it is equal with the quantity of cam 5, and the corresponding cam 5 of pump head 1, the piston 4 for connecting each pump head 1 and one
Cam 5 is to corresponding to, so that multiple 4 bars of piston and multiple cams 5 be made to correspond.It is abutted by piston 4 with the outer circle of cam 5,
Make cam 5 in rotation, cam 5 can push piston 4 to move reciprocatingly.
The cam 5 is four, and four cams 5 are successively arranged on 8 axis of worm gear with 90 ° for phase difference, and camshaft 6 is made to exist
When rotation, the state of multiple cams 5 on camshaft 6 is different, to keep the state of multiple pistons 4 different, to make multiple pumps
A portion pump head 1 in first 1 is in washing lotion state, and another part pump head 1 in multiple pump heads 1 is in drain state,
Guarantee that infusion pump can uniformly and stably work, realizes the pressure constant flow rate pulse free in infusion process.
The head of the piston 4 is also equipped with guiding rolling bearing 12, and the surface for being oriented to rolling bearing 12 is supported with cam 5
Connect cooperation.The head of the piston 4 is piston 4 close to one end of cam 5, and the tail portion of piston 4 is piston 4 close to the one of pump head 1
End；The guiding rolling bearing 12 is mounted on the head of piston 4 by central axis rotation, and is oriented to the periphery of rolling bearing 12
It is abutted with the outer rim of cam 5, can not only prevent from misplacing between cam 5 and piston 4, while can make between cam 5 and piston 4
Frictional force it is smaller, facilitate cam 5 rotation when push piston 4, effectively prevent the outer rim of cam 5 to be damaged.
The pump head 1 is located at outside rack 11, and the tail portion of piston 4 extends outwardly through rack 11, and passes through shaft coupling with plunger 2
Device connection.By the way that the tail portion of piston 4 to be through to outside rack 11, make piston 4 when moving back and forth, rack 11 can be played to piston
The effect of 4 guiding, prevents piston 4 from generating displacement when moving back and forth, and makes piston 4 when moving back and forth, 4 head of piston can be always
It is abutted with 5 outer rim of cam；Meanwhile keeping piston 4 and the connection of plunger 2 more convenient outside rack 11 tail portion of piston 4.
Mounting base 3 is installed, pump head 1 is mounted in mounting base 3 on the outer wall of the rack 11.The mounting base 3 is welded
It is fixed on the outer wall of rack 11, and pump head 1 is fixedly mounted in mounting base 3 by screw, makes the installation of pump head 1 and fixes more
Add conveniently.The mounting base 3 is L-type, and the outer wall of one end and body for making mounting base 3 is fixed, and the other end of mounting base 3 is for pacifying
Armored pump head 1 makes the easier for installation of pump head 1.The pump head 1 and plunger 2 are ceramic material, and 2 diameter of plunger of pump head 1
For 4.762mm~56.4mm, pump head 1 is enable to realize the constant delivery of high pressure or super-pressure solvent and the ring of highly corrosive for a long time
Work under border, and improve plunger 2 durability and self-lubrication, pump head 1 by using different-diameter plunger 2, thus
Realize flow 50ml/min to 10L/min.
Servo motor 9 is fixedly installed with outside the rack 11, one end of worm shaft 10 extends outwardly through rack 11, and snail
Take turns the elongated end of 8 axis and the output axis connection of servo motor 9.By the way that rack 11 is run through in one end of worm shaft 10, not only make snail
The installation of bar axis 10 is more firm, and keeps worm shaft 10 and the connection of servo motor 9 more convenient.By using servo motor 9
Worm shaft 10 is directly driven, and servo motor 9 is big compared to stepper motor torque range, operation flatness is good, controls precision also more
Height, fast response time vibration resistance, to preferably support infusion pump.
The worm shaft 10 is vertical with camshaft 6, and the output shaft of worm shaft 10 and servo motor 9 is connected by shaft coupling
It connects.The axis of the worm shaft 10 is vertical with the axis of camshaft 6, facilitates engaging more for worm screw 7 on worm shaft 10 and worm gear 8
Add conveniently.The worm gear 8 is located at the middle part of 8 axis of worm gear, and 5 symmetry arrangement of multiple cams makes multiple cams in the two sides of worm gear 8
5 are evenly distributed on the two sides of worm gear 8, and two cams 5 for being located at 8 the same side of worm gear are evenly spaced on, and multiple cams 5 is made to exist
When pushing multiple pistons 4 respectively, the power that multiple cams 5 are subject to is evenly distributed on camshaft 6, makes the stress of camshaft 6 more
Uniformly, to make the longer life expectancy of camshaft 6, prevent cam 5 from generating displacement under long-time use.
When the utility model needs to convey liquid chromatogram, servo motor 9 is transmitted power to by shaft coupling
Worm shaft 10 drives 7 fine rotational of worm screw on worm shaft 10, is engaged by worm screw 7 with worm gear 8, then deliver power to snail
Wheel 8, worm gear 8 drive camshaft 6 rotate, so that the cam 5 on camshaft 6 is made rotating motion with camshaft 6, cam 5 rotation when,
Cam 5 pushes piston 4 to make the reciprocating motion of horizontal direction, and when moving back and forth, the drive of piston 4 is connected piston 4 with piston 4
Plunger 2 makees the reciprocating motion of horizontal direction, to squeeze the cavity volume of pump head 1, completes the periodic motion of washing lotion and drain.
It since multiple cams 5 being all fixed on same root camshaft 6, is driven by the same worm screw 7, worm gear 8,
It is completely maintained in running frequency all in the same frequency；And multiple cams 5 also successively keep 90 ° of phase difference, effectively subtract
Problem only excessive there are two 180 ° of phase differences when cam 5 is lacked, has guaranteed that infusion pump can uniformly and stably work, realize infusion
Pressure constant flow rate pulse free in the process；Meanwhile using servo motor 9 and worm gear 8,7 power transmission of worm screw, thus effectively
Control the noise of infusion pump.The utility model design structure is reasonable, is fully achieved that low noise, torque are big, small in size, pulse is small.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of booster-type preparative liquid chromatography infusion pump, which is characterized in that including rack, camshaft, worm shaft, pump head；Institute
It states camshaft and worm shaft is mounted in rack；Multiple cams are fixedly installed on the camshaft, and on camshaft also
Worm gear is installed；The worm screw engaged with worm gear is fixedly installed on the worm shaft；The pump head be it is multiple, in multiple pump heads
The plunger of reciprocating movement is installed, one end of multiple plungers extends outwardly, and the elongated end of multiple plungers is respectively connected with piston,
The head of multiple pistons is connected to the outer rim of multiple cams one by one respectively.
2. booster-type preparative liquid chromatography infusion pump according to claim 1, which is characterized in that the worm gear is located at worm gear
The middle part of axis, and multiple cam symmetry arrangements are in the two sides of worm gear.
3. booster-type preparative liquid chromatography infusion pump according to claim 1, which is characterized in that the cam is four,
Four cams are successively arranged on the worm gear shaft with 90 ° for phase difference.
4. booster-type preparative liquid chromatography infusion pump according to claim 1, which is characterized in that the head of the piston is also
Guiding rolling bearing is installed, and the surface for being oriented to rolling bearing is contacted with cam.
5. booster-type preparative liquid chromatography infusion pump according to claim 1, which is characterized in that the pump head is located at rack
Outside, the tail portion of piston extends outwardly through rack, and is connect with plunger by shaft coupling.
6. booster-type preparative liquid chromatography infusion pump according to claim 5, which is characterized in that on the outer wall of the rack
Mounting base is installed, pump head is mounted in mounting base.
7. booster-type preparative liquid chromatography infusion pump according to claim 6, which is characterized in that the mounting base is L-type.
8. booster-type preparative liquid chromatography infusion pump according to claim 1, which is characterized in that the pump head is with plunger
Ceramic material, and diameter of plunger is 4.762mm~56.4mm.
9. booster-type preparative liquid chromatography infusion pump as claimed in any of claims 1 to 8, which is characterized in that institute
State and be fixedly installed with servo motor outside rack, one end of worm shaft extends outwardly through rack, and the elongated end of worm gear shaft with watch
Take the output axis connection of motor.
10. booster-type preparative liquid chromatography infusion pump according to claim 9, which is characterized in that the worm shaft with it is convex
Wheel shaft is vertical, and the output shaft of worm shaft and servo motor is connected by shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759400.0U CN208900300U (en) | 2018-10-29 | 2018-10-29 | A kind of booster-type preparative liquid chromatography infusion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759400.0U CN208900300U (en) | 2018-10-29 | 2018-10-29 | A kind of booster-type preparative liquid chromatography infusion pump |
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| Publication Number | Publication Date |
|---|---|
| CN208900300U true CN208900300U (en) | 2019-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821759400.0U Active CN208900300U (en) | 2018-10-29 | 2018-10-29 | A kind of booster-type preparative liquid chromatography infusion pump |
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| CN (1) | CN208900300U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209811A (en) * | 2018-10-29 | 2019-01-15 | 成都格莱精密仪器有限公司 | A kind of booster-type preparative liquid chromatography infusion pump |
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2018
- 2018-10-29 CN CN201821759400.0U patent/CN208900300U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209811A (en) * | 2018-10-29 | 2019-01-15 | 成都格莱精密仪器有限公司 | A kind of booster-type preparative liquid chromatography infusion pump |
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