CN104405611A - Dual-drive solvent conveying pump - Google Patents
Dual-drive solvent conveying pump Download PDFInfo
- Publication number
- CN104405611A CN104405611A CN201410539781.1A CN201410539781A CN104405611A CN 104405611 A CN104405611 A CN 104405611A CN 201410539781 A CN201410539781 A CN 201410539781A CN 104405611 A CN104405611 A CN 104405611A
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- pump
- pump head
- ball screw
- stepper motor
- dual drive
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Abstract
The invention discloses a double-drive solvent conveying pump. The double-drive solvent conveying pump comprises a rack, stepping motors, pump bodies and connecting assemblies. The two stepping motors, the two pump bodies and the two connecting assemblies are mounted on the rack in parallel. Torque output shafts of the stepping motors are connected with torque input shafts of the pump bodies through the connecting assemblies. According to the invention, the pump employing the two stepping motors are used for driving two sets of independent mechanical devices respectively operates stably. Seamless connection is achieved in intersections, pulsation-free thrust is stable and pressure is large. Besides, maintenance of the pump is convenient.
Description
Technical field
The present invention relates to a kind of pump, particularly relate to a kind of Dual Drive solvent delivery pump.
Background technique
Generally being applied to the transfer pump that liquid chromatogram is separated is main mainly with cam pump greatly, cam does the technological deficiency of the pump of transmission, what cam was walked when running is oblique line, from minimum point to peak work, and then heavy peak can produce a fixing pulsation when getting back to minimum point, do not circle and all can produce a pulsation, this pulsation cannot suppress, the pumping pressure doing transmission with cam is beated greatly, job insecurity, pulsation cannot suppress, flow accuracy is poor, infuse not steady, usually with cam do transmission pumping pressure display do unit with Mpa, impurity close with main peak in the middle of liquid chromatogram is separated, a pulsation will mask impurity peaks, only accomplish that pulsating movement free just well can be separated each impurity peaks.
Summary of the invention
Object of the present invention is just to provide a kind of Dual Drive solvent delivery pump to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of Dual Drive solvent delivery pump, comprise frame, stepper motor, the pump housing and connection part, the number of described stepper motor, the described pump housing and described connection part is two, and being arranged in described frame all side by side, the torque output shaft of described stepper motor is connected by the torque input shaft of described connection part with the described pump housing.
Two stepper motors drive the work of two pump housing independent cross respectively by the connection part of correspondence.
Particularly, described connection part comprises coupling, ball screw, guide runner, orienting roll dynamic bearing, leading screw fixed base, thrust spring and locking spring damper, the first end of described coupling is connected with the torque output shaft of described stepper motor, second end of described coupling is connected with the first end of described ball screw, described ball screw is arranged in described leading screw fixed base, described leading screw fixed base is connected with described guide runner by orienting roll dynamic bearing, described guide runner is arranged in described frame, described thrust spring is arranged on outside the second end of described ball screw, described locking spring damper is arranged on the second end end face of described ball screw.
Preferably, the first end arranged outside of described ball screw has dust-proof cover.
Particularly, the described pump housing comprises pump head, pump head fixed base, guide piston and plunger rod locking device, the first end of described guide piston is fixedly connected with described locking spring damper by described plunger rod locking device, described pump head is fixed in described frame by described pump head fixed base, second end of described guide piston is arranged in described pump head, described pump head is provided with fluid one-way valve and feed liquor one-way valve.
Particularly, the medial axis of the medial axis of the torque output shaft of the described stepper motor of same row, the medial axis of described ball screw, the medial axis of described guide piston and described pump head is same straight line.
Preferably, described pump head is ceramic pump head.
Pottery pump head can increase the high pressure resistant of the pump housing and decay resistance.
Beneficial effect of the present invention is:
Dual Drive solvent delivery pump of the present invention drives two respectively with stepper motor, and to overlap the pump operation of independently mechanical device steady, seamless link is accomplished in point of intersection, pulsating movement free thrust steady pressure is large, easy to maintenance, work owing to have employed under pottery can realize the constant delivery of high pressure or ultrahigh pressure solvent and the environment of highly corrosive for a long time as pump head.
Accompanying drawing explanation
Fig. 1 is the plan view of Dual Drive solvent delivery pump of the present invention;
Fig. 2 is the plan view of Dual Drive solvent delivery pump of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As depicted in figs. 1 and 2, Dual Drive solvent delivery pump of the present invention, comprise frame 11, stepper motor 10, the pump housing and connection part, stepper motor 10, the number of the pump housing and connection part is two, and be arranged in frame 11 all side by side, the torque output shaft of stepper motor 10 is connected with the torque input shaft of the pump housing by connection part, connection part comprises coupling 12, ball screw 13, guide runner 7, orienting roll dynamic bearing 14, leading screw fixed base 8, thrust spring 6 and locking spring damper 5, the first end of coupling 12 is connected with the torque output shaft of stepper motor 10, second end of coupling 12 is connected with the first end of ball screw 13, ball screw 13 is arranged in leading screw fixed base 8, leading screw fixed base 8 is connected with guide runner 7 by orienting roll dynamic bearing 14, guide runner 7 is arranged in frame 11, thrust spring 6 is arranged on outside the second end of ball screw 13, locking spring damper 5 is arranged on the second end end face of ball screw 13, the first end arranged outside of ball screw 13 has dust-proof cover 9, the pump housing comprises pump head 1, pump head fixed base 2, guide piston 3 and plunger rod locking device 4, the first end of guide piston 3 is fixedly connected with locking spring damper 5 by plunger rod locking device 4, pump head 1 is fixed in frame 11 by pump head fixed base 2, second end of guide piston 3 is arranged in pump head 1, pump head 1 is provided with fluid one-way valve 16 and feed liquor one-way valve 15, the medial axis of the torque output shaft of the stepper motor 10 of same row, the medial axis of ball screw 13, the medial axis of guide piston 3 and the medial axis of pump head 1 are same straight line, pump head 1 is ceramic pump head.
The working principle of Dual Drive solvent delivery pump of the present invention is as follows:
This Dual Drive solvent delivery pump passes through pressure tester, stepper motor 10 driver and singlechip controller control two separate mechanical devices, two stepper motors 10 drive two to overlap independently mechanical device respectively, with stepper motor 10 working principle of injector that driven the pattern of ball screw 13 to imitate, make it can accomplish in the formation of single guide piston 3 at the uniform velocity, constant, nonseptate transfusion makes infusion process constant pressure, pulsating movement free, when forward impelling reaches the limit of position to the first set pump housing in a linear fashion, namely guide piston 3 arrives the inner side of pump head 1, after the pumping pressure of pressure tester to the first set pump housing measures, data are sent to singlechip controller, singlechip controller is controlled stepping point gold by stepper motor 10 driver, the stepper motor 10 of the first set pump housing is reversed, the stepper motor 10 of the second cover pump housing rotates forward simultaneously, proceed solvent delivery, the action that Dual Drive solvent delivery pump has imitated injector forward impelling and retracted backward, two covering devices are installed together and just complete a complementary function, pulsating movement free process can be accomplished, beat between 3-5psi with Instrument measuring pressure pulsation, constant high pressure or ultrahigh pressure delivery solvent can be realized, this solvent delivery dual drive pump mechanical device project organization is reasonable, thrust steady pressure is large, easy to maintenance, work owing to have employed under pottery can realize the constant delivery of high pressure or ultrahigh pressure solvent and the environment of highly corrosive for a long time as pump head 1.
Technological scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, the technology distortion that every technological scheme according to the present invention is made, and all falls within protection scope of the present invention.
Claims (6)
1. a Dual Drive solvent delivery pump, comprise frame and stepper motor, it is characterized in that: also comprise the pump housing and connection part, the number of described stepper motor, the described pump housing and described connection part is two, and being arranged in described frame all side by side, the torque output shaft of described stepper motor is connected by the torque input shaft of described connection part with the described pump housing.
2. Dual Drive solvent delivery pump according to claim 1, it is characterized in that: described connection part comprises coupling, ball screw, guide runner, orienting roll dynamic bearing, leading screw fixed base, thrust spring and locking spring damper, the first end of described coupling is connected with the torque output shaft of described stepper motor, second end of described coupling is connected with the first end of described ball screw, described ball screw is arranged in described leading screw fixed base, described leading screw fixed base is connected with described guide runner by orienting roll dynamic bearing, described guide runner is arranged in described frame, described thrust spring is arranged on outside the second end of described ball screw, described locking spring damper is arranged on the second end end face of described ball screw.
3. Dual Drive solvent delivery pump according to claim 2, is characterized in that: the first end arranged outside of described ball screw has dust-proof cover.
4. Dual Drive solvent delivery pump according to claim 1 and 2, it is characterized in that: the described pump housing comprises pump head, pump head fixed base, guide piston and plunger rod locking device, the first end of described guide piston is fixedly connected with described locking spring damper by described plunger rod locking device, described pump head is fixed in described frame by described pump head fixed base, second end of described guide piston is arranged in described pump head, described pump head is provided with fluid one-way valve and feed liquor one-way valve.
5. the Dual Drive solvent delivery pump according to claim 1,2 or 4, is characterized in that: the medial axis of the torque output shaft of the described stepper motor of same row, the medial axis of described ball screw, the medial axis of described guide piston and the medial axis of described pump head are same straight line.
6. Dual Drive solvent delivery pump according to claim 1, is characterized in that: described pump head is ceramic pump head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539781.1A CN104405611A (en) | 2014-10-13 | 2014-10-13 | Dual-drive solvent conveying pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539781.1A CN104405611A (en) | 2014-10-13 | 2014-10-13 | Dual-drive solvent conveying pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104405611A true CN104405611A (en) | 2015-03-11 |
Family
ID=52643265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410539781.1A Pending CN104405611A (en) | 2014-10-13 | 2014-10-13 | Dual-drive solvent conveying pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257497A (en) * | 2015-09-28 | 2016-01-20 | 上海伍丰科学仪器有限公司 | High pressure solvent delivery pump and minitype high pressure solvent delivery pump system |
| CN106151439A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of actuating device for plunger displacement pump |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001701A (en) * | 1977-08-01 | 1979-02-07 | Perkin Elmer Corp | Dual-piston reciprocating pump |
| US4509904A (en) * | 1983-10-04 | 1985-04-09 | Petrophysical Services, Inc. | Metering pump |
| US4681513A (en) * | 1985-02-01 | 1987-07-21 | Jeol Ltd. | Two-stage pump assembly |
| US4883409A (en) * | 1987-09-26 | 1989-11-28 | Fred Strohmeier | Pumping apparatus for delivering liquid at high pressure |
| US5755561A (en) * | 1994-10-26 | 1998-05-26 | Francois Couillard | Piston pumping system delivering fluids with a substantially constant flow rate |
| US20030121414A1 (en) * | 2000-12-11 | 2003-07-03 | Etienne Cautenet | High pressure low volume pump |
| CN201425008Y (en) * | 2008-11-06 | 2010-03-17 | 钱如树 | Constant-speed and constant-pressure metering pump |
| CN101721839A (en) * | 2009-12-18 | 2010-06-09 | 北京创新通恒科技有限公司 | Infusion method of liquid chromatogram and dual-drive high pressure pump |
| CN203783840U (en) * | 2014-04-24 | 2014-08-20 | 山东海燕医用材料制造有限公司 | Precision metering liquid charging pump with ceramic plunger |
| CN204312267U (en) * | 2014-10-13 | 2015-05-06 | 成都格莱精密仪器有限公司 | Dual Drive solvent delivery pump |
-
2014
- 2014-10-13 CN CN201410539781.1A patent/CN104405611A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2001701A (en) * | 1977-08-01 | 1979-02-07 | Perkin Elmer Corp | Dual-piston reciprocating pump |
| US4509904A (en) * | 1983-10-04 | 1985-04-09 | Petrophysical Services, Inc. | Metering pump |
| US4681513A (en) * | 1985-02-01 | 1987-07-21 | Jeol Ltd. | Two-stage pump assembly |
| US4883409A (en) * | 1987-09-26 | 1989-11-28 | Fred Strohmeier | Pumping apparatus for delivering liquid at high pressure |
| US5755561A (en) * | 1994-10-26 | 1998-05-26 | Francois Couillard | Piston pumping system delivering fluids with a substantially constant flow rate |
| US20030121414A1 (en) * | 2000-12-11 | 2003-07-03 | Etienne Cautenet | High pressure low volume pump |
| CN201425008Y (en) * | 2008-11-06 | 2010-03-17 | 钱如树 | Constant-speed and constant-pressure metering pump |
| CN101721839A (en) * | 2009-12-18 | 2010-06-09 | 北京创新通恒科技有限公司 | Infusion method of liquid chromatogram and dual-drive high pressure pump |
| CN203783840U (en) * | 2014-04-24 | 2014-08-20 | 山东海燕医用材料制造有限公司 | Precision metering liquid charging pump with ceramic plunger |
| CN204312267U (en) * | 2014-10-13 | 2015-05-06 | 成都格莱精密仪器有限公司 | Dual Drive solvent delivery pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106151439A (en) * | 2015-04-10 | 2016-11-23 | 中国石油化工股份有限公司 | A kind of actuating device for plunger displacement pump |
| CN106151439B (en) * | 2015-04-10 | 2018-08-17 | 中国石油化工股份有限公司 | A kind of transmission device for plunger pump |
| CN105257497A (en) * | 2015-09-28 | 2016-01-20 | 上海伍丰科学仪器有限公司 | High pressure solvent delivery pump and minitype high pressure solvent delivery pump system |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
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| RJ01 | Rejection of invention patent application after publication |