CN112145391A - Flow cell method dissolution appearance dissolution medium power pump control system - Google Patents
Flow cell method dissolution appearance dissolution medium power pump control system Download PDFInfo
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- CN112145391A CN112145391A CN202011061301.7A CN202011061301A CN112145391A CN 112145391 A CN112145391 A CN 112145391A CN 202011061301 A CN202011061301 A CN 202011061301A CN 112145391 A CN112145391 A CN 112145391A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
- F04B23/06—Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/15—Medicinal preparations ; Physical properties thereof, e.g. dissolubility
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Biophysics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Flow Control (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a dynamic pump control system for a dissolution medium of a dissolution apparatus of a flow cell method, wherein the corresponding dissolution apparatus of the flow cell method comprises 7 independent dissolution channels, the 7 independent dissolution channels are divided into 2 groups, one group consists of 4 dissolution channels, the other group consists of 3 dissolution channels, and each group of dissolution channels can synchronously carry out dissolution experiments of the flow cell method; each dissolution channel consists of dissolution medium power pump, valve group, pipeline, flow cell and other parts, wherein the dissolution medium power pump outputs stable constant speed or pulse flow dissolution medium by two injection pumps through two motors control alternate complementation, and provides high-precision flow rate dissolution medium for the flow cell dissolution device; through the components such as the synchronous plate, the screw nut, the ball screw, the coupler, the encoder, the shutoff electromagnetic valve and the like, the dissolving-out medium power pump with two groups of dissolving-out channels (4+3 modes) can set different motion parameters, two groups of different flow cell dissolving-out experiments are executed, and the dissolving-out experiment efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of dissolution equipment, and particularly relates to a 4+3 mode dissolution medium power pump of a flow cell dissolution instrument and a control system thereof.
Background
As a method for examining drug properties, dissolution rate examination plays an important role in the links of development, simulation, and quality consistency evaluation when a change occurs after approval of a pharmaceutical preparation. The united states pharmacopeia divides a drug dissolution device into 1 to 7 methods, wherein the fourth method is a flow cell method, and the 2020 edition of the chinese pharmacopeia is included as the sixth method.
The dissolution medium power pump used for the dissolution apparatus of the flow cell method in the current market can not realize the flow modes of constant flow, pulse flow and the like of the dissolution medium due to the problems of uneven triggering pressure of a one-way check valve, uncontrolled opening and closing speed of an electromagnetic valve, inconsistent alternate matching of a motor and the like.
Disclosure of Invention
Therefore, the invention provides a dissolution medium power pump control system of a dissolution apparatus by a flow cell method, which aims to solve the problems that in the prior art, the flow rate interference is caused by non-uniform triggering pressure of a check valve, self gravity inertia of a check valve rolling ball and the like, the flow rate interference is caused by excessively high opening speed of an electromagnetic valve, the flow rate interference is caused by movement reversing of a push-pull rod of an injection pump, and the flow modes of constant flow, pulse flow and the like of a dissolution medium cannot be realized.
In order to achieve the above purpose, the invention provides the following technical scheme: a control system for a dissolution medium power pump of a dissolution apparatus of a flow cell method comprises a first three-way joint; two interfaces of the first three-way joint are respectively connected with power pump assemblies with the same structure; the power pump assembly includes: one port of the second three-way joint is connected with a liquid inlet pipeline, a first electromagnetic valve is arranged between the liquid inlet pipeline and the second three-way joint, the other port of the second three-way joint is connected with the first three-way joint, and a second electromagnetic valve is arranged between the second three-way joint and the first three-way joint; a support; the two groups of injectors respectively comprise a first group of injectors and a second group of injectors, wherein the first group of injectors are vertically arranged on the bracket, the first group of injectors comprise four first injectors, each first injector is communicated with the common interface of the second three-way joint, the second group of injectors are vertically arranged on the bracket, the second group of injectors comprise three second injectors, and each second injector is communicated with the common interface of the second three-way joint; each group of injectors is connected with a synchronization plate, the synchronization plates are connected with the support in a sliding manner, and all push-pull rods of each group of injectors are connected to the corresponding synchronization plates; and each synchronous plate is connected with a driving device, and the driving device can drive the synchronous plates to move.
The first three-way joint is connected with the injectors in the two power pump assemblies through the two second three-way joints, the outputs of the two power pump assemblies can be alternately complemented, and meanwhile, when each power pump assembly outputs, each group of driving devices can be controlled to drive each group of injectors to further alternately complement and move, so that constant flow or pulse flow of the dissolution medium can be output, and the dissolution medium with high precision flow rate can be provided for the flow cell dissolution device; the control 4 at least groups of motors provide 4+3 mode power pumps, different motion parameters can be set for two groups of pumps, the pumps are opened through the cooperation of the one-way electromagnetic valves, the flow cell dissolution instrument can simultaneously execute two groups of different dissolution experiments, and the dissolution experiment efficiency is improved.
Further, the first solenoid valve includes a first cutoff solenoid valve.
Further, the second solenoid valve includes a second shutoff solenoid valve.
Further, the support is of a frame structure, and an injector mounting plate is horizontally arranged in the support; the two groups of injectors are vertically arranged at the top of the injector mounting plate; push-pull rods of the two groups of injectors movably penetrate through the bottom of the mounting plate.
Furthermore, two ends of the synchronous plate are respectively connected with guide pillars in a sliding mode, and the guide pillars are vertically arranged inside the support.
Further, the first syringe comprises a glass precision syringe.
Further, the second syringe comprises a glass precision syringe.
Further, the driving device includes:
the screw nut is arranged on the synchronous plate;
the ball screw is in threaded matching with the screw nut, one end of the ball screw penetrates through the top of the synchronous plate, and the other end of the ball screw penetrates through the bottom of the support;
and an output shaft of the driving motor is connected with the ball screw, and the driving motor can drive the ball screw to rotate.
Further, the driving motor is rotationally connected with the ball screw through a coupler.
Further, the driving motor is rotatably connected with the coupler through a coded disc.
The invention has the following advantages: the first three-way joint is connected with the injectors in the two power pump assemblies through the two second three-way joints, the outputs of the two power pump assemblies can be alternately complemented, and meanwhile, when each power pump assembly outputs, each group of driving devices can be controlled to drive each group of injectors to further alternately complement and move, so that constant flow or pulse flow of the dissolution medium can be output, and the dissolution medium with high precision flow rate can be provided for the flow cell dissolution device; meanwhile, 7 dissolution channels of the flow cell dissolution instrument are divided into two groups (4+3), an injection pump of each dissolution channel is controlled by two motors, the injection pumps of the 7 dissolution channels are controlled by 4 motors, different motion parameters can be set for the two groups of pumps, the working current for controlling the closure and opening of the cut-off electromagnetic valve is adjusted and controlled, the closing and opening speeds are controlled, the constant current or pulse flow of the 4+3 mode dissolution medium power pump is realized, the flow cell dissolution instrument can simultaneously execute two groups of different dissolution experiments, and the dissolution experiment efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
Fig. 1 is a schematic diagram of the overall structure of a dissolution medium power pump control system of a flow cell dissolution apparatus according to an embodiment of the present invention.
In the figure: three- way joints 1 and 2, a dissolution medium inlet pipeline 3, a first electromagnetic valve 4, a second electromagnetic valve 5, a bracket 6, a mounting plate 61, a guide post 62, a first injector 7, a second injector 8, a synchronous plate 9, a driving motor 10, a screw nut 11, a ball screw 12, a coupling 13 and an encoder 14.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and the detailed description, but those skilled in the art will understand that the following described embodiments are some, not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The dissolution medium power pump control system of the dissolution apparatus of the flow cell method provided by the embodiment 1 of the present invention is shown in fig. 1, and includes a first three-way joint 1; two interfaces of the first three-way joint 1 are respectively connected with power pump assemblies with the same structure; the power pump assembly includes: one port of the second three-way joint 2 is connected with a liquid inlet pipeline 3, a first cutoff electromagnetic valve 4 is arranged between the liquid inlet pipeline 3 and the second three-way joint 2, the other port of the second three-way joint 2 is connected with the first three-way joint 1, and a second electromagnetic valve 5 is arranged between the second three-way joint 2 and the first three-way joint 1; a bracket 6; the two groups of injectors respectively comprise a first group of injectors and a second group of injectors, wherein the first group of injectors are vertically arranged on the support 6 and comprise four first injectors 7, each first injector is communicated with a common interface of the second three-way joint 2, the second group of injectors are vertically arranged on the support 6 and comprise three second injectors 8, and each second injector 8 is communicated with a common interface of the second three-way joint 2; each group of injectors is connected with a synchronizing plate 9, the synchronizing plates 9 are connected with the support 6 in a sliding manner, and all injection push-pull rods of each group of injectors are connected to the corresponding synchronizing plates 9; and each synchronous plate is connected with a driving device, and the driving devices can drive the synchronous plates to move.
Further, the first solenoid valve 4 includes a first shutoff solenoid valve, and the second solenoid valve 5 includes a second shutoff solenoid valve. The bracket 6 is of a frame structure, and an injector mounting plate 61 is horizontally arranged in the bracket 6; the two groups of injectors are vertically arranged at the top of the injector mounting plate 61; the injection rods of the two groups of injectors movably penetrate through the bottom of the mounting plate 61. Two ends of the synchronizing plate 9 are respectively connected with guide posts 62 in a sliding manner, and the guide posts 62 are vertically arranged inside the bracket. The first syringe 7 comprises a glass syringe. The second syringe 8 comprises a glass syringe. The drive device includes: the screw nut 11 is arranged on the synchronous plate 9; the ball screw 12 is in threaded matching with the screw nut 11, one end of the ball screw 12 penetrates through the top of the synchronous plate 9, and the other end of the ball screw 12 penetrates through the bottom of the support 6; and the driving motor 10, the output shaft of the driving motor 10 is connected with the ball screw 12, and the driving motor 10 can drive the ball screw 12 to rotate. The driving motor 10 is rotationally connected to the ball screw 12 via a coupling 13. The drive motor 10 is connected in rotation to a coupling 13 via an encoder 14.
The use principle is as follows: opening a first cut-off electromagnetic valve 4, closing a second cut-off electromagnetic valve 5, after extracting liquid from a liquid inlet pipeline through two groups of injectors in each power pump assembly, closing the first cut-off electromagnetic valve 4, opening the second cut-off electromagnetic valve 5, connecting a first three-way joint 1 with the injectors in the two power pump assemblies through two second three-way joints, enabling the outputs of the two power pump assemblies to be alternately complemented, and meanwhile, when each power pump assembly outputs, driving each group of injectors to further alternately complement and move by controlling each group of driving devices, so that constant current or pulse flow of a dissolution medium is output, and the dissolution medium with high-precision flow rate is provided for the flow cell dissolution device; the control 4 groups of motors provide 4+3 mode power pumps, different motion parameters can be set for the two groups of pumps, the two groups of pumps are opened in a matched mode through the cut-off electromagnetic valve, the flow cell dissolution instrument can simultaneously execute two groups of different dissolution experiments, and the dissolution experiment efficiency is improved.
The drive arrangement theory of operation is as follows, driving motor installs on the support, driving motor rotates, encoder feedback signal, realize rotating the number of turns and the accurate control of rotational position, driving motor output shaft rotates and drives the shaft coupling and rotate, the shaft coupling rotates and drives the ball and rotate, the ball top rotates and connects on the syringe mounting panel, accessible bearing rotates and connects, because screw nut fixed mounting is on synchronous board, consequently, the ball rotates and drives screw nut and reciprocate, thereby drive synchronous board and reciprocate, thereby drive the injection pole synchronous motion of first group syringe, driving motor is in the switching-over simultaneously, the control dams the solenoid valve speed of opening and shutting (several other groups syringe theory of operation are the same, not repeated description), thereby realize the purpose of synchronous extraction liquid.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. A control system for a dissolution medium power pump of a dissolution apparatus of a flow cell method is characterized by comprising a first three-way joint; two interfaces of the first three-way joint are respectively connected with power pump assemblies with the same structure; the power pump assembly includes:
one port of the second three-way joint is connected with an input liquid pipeline, a first electromagnetic valve is arranged between the input liquid pipeline and the second three-way joint, the other port of the second three-way joint is connected with the first three-way joint, and a second electromagnetic valve is arranged between the second three-way joint and the first three-way joint;
a support;
the two groups of injectors respectively comprise a first group of injectors and a second group of injectors, wherein the first group of injectors are vertically arranged on the bracket, the first group of injectors comprise four first injectors, each first injector is communicated with a common interface of the second three-way joint, the second group of injectors are vertically arranged on the bracket, the second group of injectors comprise three second injectors, and each second injector is communicated with the last interface of the second three-way joint;
each group of injectors is connected with a synchronous plate, the synchronous plate is connected with the support in a sliding manner, and all injection rods of each group of injectors are connected to the corresponding synchronous plate;
and each synchronous plate is connected with a driving device, and the driving device can drive the synchronous plates to move.
2. The system of claim 1, wherein the first solenoid valve comprises a first cutoff solenoid valve.
3. The system of claim 1, wherein said second solenoid valve comprises a second shut-off solenoid valve.
4. The system for controlling the dissolution medium power pump of a flow cell dissolution apparatus of claim 1, wherein the bracket is a frame structure, and an injector mounting plate is horizontally arranged inside the bracket; the two groups of injectors are vertically arranged at the top of the injector mounting plate; push-pull rods of the two groups of injectors movably penetrate through the bottom of the mounting plate.
5. The system of claim 1, wherein the synchronous plate has guide posts slidably connected to both ends thereof, and the guide posts are vertically disposed inside the frame.
6. The system of claim 1, wherein the first syringe comprises a glass precision syringe.
7. The system of claim 1, wherein the second syringe comprises a glass precision syringe.
8. The system of claim 1, wherein the driving mechanism comprises:
the screw nut is arranged on the synchronous plate;
the ball screw is in threaded matching with the screw nut, one end of the ball screw penetrates through the top of the synchronous plate, and the other end of the ball screw penetrates through the bottom of the support;
and an output shaft of the driving motor is connected with the ball screw, and the driving motor can drive the ball screw to rotate.
9. The flow cell dissolution apparatus control system according to claim 8, wherein the driving motor is rotatably connected to the ball screw through a coupling.
10. The flow cell dissolution apparatus control system according to claim 9, wherein the driving motor is connected to the coupling through a code wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061301.7A CN112145391B (en) | 2020-09-30 | 2020-09-30 | Flow cell method dissolution appearance dissolution medium power pump control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061301.7A CN112145391B (en) | 2020-09-30 | 2020-09-30 | Flow cell method dissolution appearance dissolution medium power pump control system |
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| Publication Number | Publication Date |
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| CN112145391A true CN112145391A (en) | 2020-12-29 |
| CN112145391B CN112145391B (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011061301.7A Active CN112145391B (en) | 2020-09-30 | 2020-09-30 | Flow cell method dissolution appearance dissolution medium power pump control system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202837140U (en) * | 2012-10-19 | 2013-03-27 | 公安部天津消防研究所 | Trace gas metering device |
| CN205835821U (en) * | 2016-07-12 | 2016-12-28 | 肖海斌 | A kind of AB glue accurate measurement injection device of liquid-state silicon gel feeder |
| CN111219309A (en) * | 2018-11-23 | 2020-06-02 | 威海爱恩吉智控精机有限公司 | Multi-connection metering micro-discharge controller |
| CN111608875A (en) * | 2020-05-09 | 2020-09-01 | 深圳市马太智能科技有限公司 | Continuous liquid quantitative precise pumping machine |
-
2020
- 2020-09-30 CN CN202011061301.7A patent/CN112145391B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202837140U (en) * | 2012-10-19 | 2013-03-27 | 公安部天津消防研究所 | Trace gas metering device |
| CN205835821U (en) * | 2016-07-12 | 2016-12-28 | 肖海斌 | A kind of AB glue accurate measurement injection device of liquid-state silicon gel feeder |
| CN111219309A (en) * | 2018-11-23 | 2020-06-02 | 威海爱恩吉智控精机有限公司 | Multi-connection metering micro-discharge controller |
| CN111608875A (en) * | 2020-05-09 | 2020-09-01 | 深圳市马太智能科技有限公司 | Continuous liquid quantitative precise pumping machine |
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| CN112145391B (en) | 2022-09-13 |
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Effective date of registration: 20230417 Address after: 518000 workshop 201, building 11, Nangang Second Industrial Park, No. 1026 Songbai Road, sunshine community, Xili street, Nanshan District, Shenzhen, Guangdong Province Patentee after: Shenzhen ruituo Analytical Instrument Co.,Ltd. Address before: 518104 2nd floor, Zhenhua electronics factory, Shayi community, Shayi West Industrial Zone, Shajing street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: RAYTOR INSTRUMENTS Co.,Ltd. |