CN101672758B - Osmotic pressure molar density determinator - Google Patents
Osmotic pressure molar density determinator Download PDFInfo
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- CN101672758B CN101672758B CN2009100703449A CN200910070344A CN101672758B CN 101672758 B CN101672758 B CN 101672758B CN 2009100703449 A CN2009100703449 A CN 2009100703449A CN 200910070344 A CN200910070344 A CN 200910070344A CN 101672758 B CN101672758 B CN 101672758B
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- probe
- drive motor
- fixed
- specimen holder
- osmotic pressure
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Abstract
The invention provides an osmotic pressure molar density deternimator, comprising a base plate supporting the whole device, a left vertical plate and a right vertical plate, two refrigeration devices with same structures, a drive motor, a drive and transmission mechanisms, a movement positioning device and a control circuit board with a microprocessor, wherein the drive motor controls the movement of a sample holder, probes and probe search units. The effect of the invention is achieved as follows: the three straight line transmission mechanisms are driven by the drive motor and the drive motor respectively controls a temperature probe search unit, a stirring probe and the sample holder. Users can control the rotation direction and the rotation speed of the drive motor conveniently through utilizing the powerful control function of the microprocessor by keys, so that the automation control on the whole measuring process can be realized and the probability of incorrect manipulation brought by manual operation can be greatly reduced. The mechanisms have simple and compact structure, reliable and stable working, low noise and low failure rate, thereby greatly prolonging the service life of the osmotic pressure molar density determinator.
Description
Technical field
The present invention relates to a kind of detecting instrument, particularly a kind of osmotic pressure molar density determinator.
Background technology
For a long time, the instrument that measurement liquid volumetric molar concentration is used is for drug development and analysis, there is important use aspect such as clinical application and food hygiene, model such as Tianjin Skyho is the osmotic pressure molar density determinator of SMC-30B, the model that Tianjin was sent out company in huge day is the osmotic pressure detector of STY-1, the probe whipping process of the osmotic pressure molar density determinator of this quasi-tradition is often finished by slider-crank mechanism, the motor that moves through of probe and specimen holder was finished with cooperating of leading screw, texture ratio is more loaded down with trivial details, noise is bigger during operation, poor stability, failure rate is higher, has had a strong impact on the serviceable life of this quasi-instrument.
Use osmotic pressure molar density determinator indoor temperature and humidity all to be had the requirement of comparison strictness, too high temperature and low excessively humidity all may cause the failure of testing, and current osmotic pressure molar density determinator both domestic and external does not all have the humiture measuring ability, can't inform before experiment whether the operator can experimentize.Osmotic pressure molar density determinator in the market all can only be measured by the button on the instrument, carries out simple measurement result transmission by data line, can't directly control whole measuring process by PC.And the osmotic pressure molar density determinator on the market (is the STY-1 that SMC-30B, Tianjin of the Tianjin Milky Way was sent out in huge day such as model) can only link to each other with PC by the RS232 serial ports, be not with the RS232 serial ports on a lot of now novel computers, this brings very big inconvenience to the operator.
Summary of the invention
At structural deficiency in the prior art, the purpose of this invention is to provide a kind of osmotic pressure molar density determinator, can realize the automation mechanized operation of height, carry out the osmotic pressure molar density determinator device of multiple concentration liquid steadily, apace.
For achieving the above object, the technical solution used in the present invention provides a kind of osmotic pressure molar density determinator, this analyzer includes the base plate that supports whole device, a left side, right two risers, the refrigerating plant of two same structures, the control specimen holder, probe, the drive motor of probe movement, driver and gear train, motion positions device and the control circuit board that has little processing, wherein: a described left side, parallel respectively being fixed on the base plate of right riser, two refrigerating plants are fixed in the middle of the riser, control circuit board is fixed on the side of right riser, the control specimen holder, probe, the driver of probe movement directly links to each other with the control circuit board that has microprocessor, circuit board comes the different motion of controlling and driving motor by the control to driver, drive motor by driver and gear train to specimen holder, probe, the motion of probe is controlled, the two ends of motion positions device be separately fixed at the upper support piece that is connected with described web joint with lower support piece that described base plate is connected on, and directly link to each other with described control circuit board.
Effect of the present invention is to adopt this osmotic pressure molar density determinator, instrument is operated steadily, noise is little, can realize the automation mechanized operation of height, improved the serviceable life of instrument greatly, make it can high-speed and high-efficiency finish the measurement of liquid osmotic pressure molar density exactly, Measuring Time only needs 1～2 minute, measuring repeatability can remain on＜± 0.5% or＜± 2 data bit.This device can be used for the aspects such as research and development, production and solvent medically, blood analysis and science medication of product approximately.
Description of drawings
Fig. 1 is an osmotic pressure molar density determinator physical construction synoptic diagram;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is an osmotic pressure molar density determinator circuit part theory diagram.
Among the figure:
1, base plate 2, specimen holder drive motor 3, left riser 4, right riser
5, descend insulation cladding 6, last insulation cladding 7, probe stirring apparatus 8, probe dog screw
9, upper support piece 10, probe dog screw 11, probe gear train
12, probe actuation motor 13, semiconductor-on-insulator cold-making block 14, following semiconductor cold-making block
15, specimen holder gear train 16, specimen holder dog screw 17, lower support piece
18, descend heat radiator 19, last heat radiator
Embodiment
Reaching embodiment in conjunction with the accompanying drawings is illustrated the structure of osmotic pressure molar density determinator of the present invention.
As shown in Figure 1, osmotic pressure molar density determinator structure of the present invention includes the base plate 1 that supports whole device, two risers are left riser 3 and right riser 4, two refrigerating plants, the gear train of three cover drive motor of probe, temp probe, specimen holder is stirred in control, motion positions device and control circuit board
Described two refrigeration mechanisms include refrigeration mechanism and following refrigeration mechanism, described go up refrigeration mechanism by last cold-making block 13, go up insulation cladding 6, upward heat radiator 19 is formed; Following refrigeration mechanism is by cold-making block 14, following insulation cladding 5, following heat radiator 18 are formed down.Last refrigeration mechanism is fixing by left riser 3 and right riser 4, semiconductor-on-insulator cold-making block 13, following semiconductor cold-making block 14 are fixed on 5 li of insulation claddings, following semiconductor cold-making block 14 is fixed on 6 li of insulation claddings, give semiconductor-on-insulator cold-making block 13, following semiconductor cold-making block 14 refrigeration respectively, last heat radiator 19, following heat radiator 18 are used for respectively to semiconductor-on-insulator cold-making block 13, semiconductor cold-making block 14 heat radiations down.
The gear train of described control specimen holder, probe, three drive motor of probe, comprise the specimen holder drive motor 2 that is fixed on the base plate 1, be fixed on the probe actuation motor on the left riser 4, be fixed on the probe drive motor on the right riser 3, the driver that drives described specimen holder, probe, three drive motor of probe all is fixed on the base plate 1, three drivers directly link to each other with little processing of described control circuit board, realize the described specimen holder of control, probe, three drive motor of probe.Three cover drive motor and motor transmission mechanisms, comprise probe motion mechanism, probe movement mechanism, specimen holder motion, probe actuation motor 12 links to each other with probe gear train 7 by shaft coupling equipment, specimen holder drive motor 2 links to each other with specimen holder gear train 15 by shaft coupling equipment, and the probe drive motor links to each other with probe gear train 11 by shaft coupling equipment.
Described probe gear train, comprise specimen holder drive motor 2 and probe stirring apparatus 7, by the control of microprocessor to drive motor 2 travel directions and speed, the rotation of specimen holder drive motor 2 drives probe rabbling mechanism 7 straight lines and moves up and down, and treats the purpose that side liquid stirred and injected ice crystal thereby reach.
Described probe gear train and probe gear train are identical substantially, just being fixed on the support is a thin stainless-steel tube, and temp probe is fixed on the end of stainless-steel tube, during measurement by this device, temp probe is extend in the solution cup, survey the variation of solution temperature.
Described specimen holder gear train, comprise specimen holder drive motor 2 and specimen holder gear train 15, by the control of single-chip microcomputer to specimen holder drive motor 2 travel directions and speed, the rotation of specimen holder drive motor 2 drives specimen holder gear train 15 straight lines and seesaws, thereby makes the operator take out or put into sample cup the bellmouth from specimen holder very easily.
Described motion positions device comprises upper support piece 9, probe dog screw 8, probe dog screw 10, specimen holder dog screw 16, lower support piece 17, the two ends of motion positions device be separately fixed at the upper support piece 9 that is connected with described web joint with lower support piece 17 that described base plate 1 is connected on, be fixed on upper support piece 9 left sides and right side and be fixed on grooved optical coupled switch on the lower support piece 17 (figure does not show), according to probe dog screw 8, probe dog screw 10, whether specimen holder dog screw 16 rests on the optical coupled switch centre position, judges the run location of drive motor.
The ultimate principle block diagram of the circuit part of described osmotic pressure molar density determinator as shown in Figure 3, temperature sensors of high precision places detected solution, and temperature signal is converted to voltage signal, delivers in the microprocessor with the form of analog quantity through filtering again; Temperature-control circuit is used to control the start-stop of semiconductor cooler; Optical coupled switch plays the role of positioning, and it sends to microprocessor high-low level signal according to whether having object to block; Liquid crystal display shows for instrument provides flexibly menu, the every function that can select instrument to provide flexibly by keyboard; Mini-printer can the output print measurement result.Microprocessor comes the monitoring instrument running status according to the signal of temperature sensor and optical coupled switch and the control command of button, and the control motor carries out mechanical drive and liquid crystal and printer and shows output.
Described osmotic pressure molar density determinator can link to each other with PC by RS232 mouth or USB mouth, has worked out corresponding software in PC, can control whole measuring process very easily by this software.
The mensuration process of described osmotic pressure molar density determinator is, self check when instrument brings into operation, judge whether each drive motor and cold-making block be normal, carrying out humiture then detects, detect indoor temperature and humidity and whether meet the instrument job requirement, these two finish after, instrument begins two minutes precooling, after precooling is finished, can begin the associative operation of instrument, select test function, specimen holder ejects automatically, put into cone tank on the specimen holder to the sample cup that fills detected sample this moment, put into finish after, click corresponding button, the specimen holder automatic drawing back, probe extend in the solution cup, and the semiconductor-on-insulator cold-making block is given the probe refrigeration, and making has ice crystal to generate on the probe, following semiconductor cold-making block is given solution cup refrigeration, the variation of solution temperature in the probe sensing solution cup, during to subzero 10 ℃, probe extend into automatically and in the solution cup solution is stirred and ice crystal is injected.This moment, microprocessor carried out the related data collection, by the magnitude of voltage of collection and the corresponding relation of osmotic pressure molar density value, can draw the osmotic pressure molar density value of solution.
Claims (4)
1. osmotic pressure molar density determinator, this analyzer includes the base plate that supports whole device, left and right two risers, the refrigerating plant of two same structures, control specimen holder, probe, drive motor, driver and motor transmission mechanism, the motion positions device of probe movement and the control circuit board that has microprocessor is characterized in that:
Described left and right riser (4,3) connects and parallel respectively being fixed on the base plate (1) by web joint, and two refrigerating plants are fixed in the middle of the riser, and control circuit board is fixed on the side of right riser (3); Described control specimen holder, probe, the drive motor of probe movement, driver and motor transmission mechanism comprise the specimen holder drive motor (2) that is fixed on the base plate (1), be fixed on the probe actuation motor on the left riser (4), be fixed on the probe drive motor on the right riser (3), drive specimen holder, probe, the driver of three drive motor of probe all is fixed on the base plate (1), direct three drivers that link to each other with the little processing of described control circuit board, realization is to specimen holder, probe, the control of three drive motor of probe, specimen holder, probe, the drive motor of probe links to each other with corresponding gear train by shaft coupling equipment respectively; The two ends of motion positions device be separately fixed at the upper support piece (9) that is connected with described web joint with lower support piece (17) that described base plate (1) is connected on, and directly link to each other with described control circuit board.
2. osmotic pressure molar density determinator according to claim 1, it is characterized in that: described two refrigerating plants include cold-making block, insulation cladding, heat abstractor respectively, insulation cladding is fixed on the cold junction of cold-making block, and heat abstractor is fixed on the hot junction of cold-making block, is beneficial to the cold-making block heat radiation.
3. osmotic pressure molar density determinator according to claim 1, it is characterized in that: described motion positions device is to fix a screw respectively at the gear train end of control specimen holder, probe, three drive motor of probe, fix two optical coupled switch in upper support piece (9) both sides, on the lower support piece, fix an optical coupled switch.
4. osmotic pressure molar density determinator according to claim 1, it is characterized in that: the microprocessor in the described control circuit board directly links to each other with external memory storage, hummer, temperature sensors of high precision, motor driver, optical coupled switch, keyboard, cold-making block temperature detecting module, temperature-control circuit, humiture detection module, clock circuit, LCD MODULE electricity in the control circuit board, and described microprocessor passes through RS232 or the USB mouth links to each other with PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100703449A CN101672758B (en) | 2009-09-03 | 2009-09-03 | Osmotic pressure molar density determinator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100703449A CN101672758B (en) | 2009-09-03 | 2009-09-03 | Osmotic pressure molar density determinator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101672758A CN101672758A (en) | 2010-03-17 |
| CN101672758B true CN101672758B (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100703449A Expired - Fee Related CN101672758B (en) | 2009-09-03 | 2009-09-03 | Osmotic pressure molar density determinator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426065B (en) * | 2011-09-01 | 2013-01-30 | 天津大学 | Self-lock protector for thermistor sensor |
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2009
- 2009-09-03 CN CN2009100703449A patent/CN101672758B/en not_active Expired - Fee Related
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| CN101672758A (en) | 2010-03-17 |
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Assignee: Tianjin blue Instrument Technology Co.,Ltd. Assignor: Tianjin University Contract record no.: 2011120000187 Denomination of invention: Osmotic pressure molar density determinator Granted publication date: 20110209 License type: Exclusive License Open date: 20100317 Record date: 20110922 |
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| 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: 20110209 Termination date: 20210903 |