CN111298474B - Laboratory-level reflux ratio adjusting device - Google Patents
Laboratory-level reflux ratio adjusting device Download PDFInfo
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- CN111298474B CN111298474B CN202010195492.XA CN202010195492A CN111298474B CN 111298474 B CN111298474 B CN 111298474B CN 202010195492 A CN202010195492 A CN 202010195492A CN 111298474 B CN111298474 B CN 111298474B
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- connecting shaft
- guide block
- reflux
- reflux ratio
- driving mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
- B01D3/4205—Reflux ratio control splitter
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- Chemical Kinetics & Catalysis (AREA)
- Control Of Non-Electrical Variables (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a laboratory-level reflux ratio adjusting device. The telescopic mechanism comprises a connecting shaft sleeve, a connecting shaft, a shifting piece, a guide block, a torsional spring and a cylindrical pin, wherein one end of the guide block is connected with the driving mechanism, the other end of the guide block is connected with one end of the connecting shaft, and the connecting shaft is fixed by the connecting shaft sleeve and the guide block to ensure that the connecting shaft can linearly move in the horizontal direction; the other end of the connecting shaft is provided with a cylindrical pin and a torsional spring, and the shifting piece is movably arranged on the connecting shaft through the cylindrical pin and the torsional spring. The invention has simple structure, simple processing, convenient installation, accurate calculation and good reliability, the connecting shaft drives the plectrum to move and stop through the linear motor and the proximity switch, the extraction amount and the reflux amount can be accurately controlled, and the problems of inaccurate reflux regulation ratio control and reliability are solved.
Description
Technical Field
The invention belongs to the technical field of chemical equipment, and relates to a laboratory-level reflux ratio adjusting device which can accurately control the proportion of reflux quantity and extraction quantity according to process requirements.
Background
The existing reflux ratio devices have two types, one type is used for a large-scale device, and a flowmeter and a regulating valve are matched to realize ratio control. In addition, the reflux ratio is controlled by controlling the time proportion of the pulse period of the electromagnetic swinging bucket by means of the electromagnetic swinging bucket, and the mode has high precision, simple structure and convenient control; however, the coil needs to be powered on all the time, the coil generates heat after being powered on for a long time, the magnetic force also drops, the situation that the coil is burnt out can be caused, normal work is affected, and reliability is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a laboratory-level reflux ratio adjusting device.
The technical scheme of the invention is as follows:
the invention provides a laboratory-level reflux ratio adjusting device which comprises a driving mechanism, a telescopic mechanism, a displacement detection mechanism and a mounting seat.
The driving mechanism is used for driving the telescopic mechanism; the displacement detection mechanism is used for detecting the position of the telescopic mechanism, and the mounting seat is used for connecting the reflux ratio adjusting device to the steam reflux system.
The telescopic mechanism comprises a connecting shaft sleeve, a connecting shaft, a shifting piece, a guide block, a torsion spring and a cylindrical pin.
One end of the guide block is connected with the driving mechanism, the other end of the guide block is connected with one end of a connecting shaft, and the connecting shaft is fixed by a connecting shaft sleeve and the guide block, so that the connecting shaft can move linearly in the horizontal direction;
the other end of the connecting shaft is provided with a cylindrical pin and a torsional spring, and the shifting piece is movably arranged on the connecting shaft through the cylindrical pin and the torsional spring.
The displacement detection mechanism comprises a switch fixing ring and a proximity switch, the proximity switch is used for detecting whether the guide block is close to the guide block or not and preventing the step from being lost, and the proximity switch is fixed on the driving mechanism through the switch fixing ring.
Furthermore, the driving mechanism comprises a linear motor and a motor base, the linear motor is fixed on the motor base, the switch fixing ring is also fixed on the motor base, and the guide block is positioned in the motor base.
Furthermore, an O-shaped ring is arranged between the connecting shaft and the connecting shaft sleeve and is used for preventing the connecting shaft from generating axial vibration.
The invention also provides an evaporation reflux system which comprises a condensation pipe, a liquid separation hopper and the reflux ratio adjusting device, wherein the liquid separation hopper is arranged below the condensation pipe, and the liquid separation hopper is controlled by the reflux ratio adjusting device, so that an outlet of the liquid separation hopper is positioned at an extraction outlet or a reflux port of the condensation pipe.
Furthermore, a sealing gasket is arranged between the connecting shaft and the connecting shaft sleeve, and the sealing gasket isolates the environment in the condensation pipe from the external environment, so that distillation fractions are prevented from being dissipated from the mounting seat, and a sealing effect is achieved.
Furthermore, the duty ratio of the linear motor can be adjusted, and the effect of adjusting the reflux ratio is achieved by setting certain step length time and state holding time.
The invention has the beneficial effects that:
the backflow regulating ratio device provided by the invention has the advantages of simple structure, simple processing, convenience in installation, accurate calculation and good reliability, the connecting shaft drives the shifting piece to move and stop through the linear motor and the proximity switch, the extraction amount and the backflow amount can be accurately controlled, and the problems of inaccuracy and reliability in controlling the backflow regulating ratio are solved.
Drawings
FIG. 1 is an assembly view of a reflux ratio adjusting device;
FIG. 2 is a cross-sectional view of a reflux ratio adjusting device;
FIG. 3 is a structural view of the reflux ratio adjusting apparatus at a reflux ratio of 0;
FIG. 4 is a structural view of the reflux ratio adjusting apparatus at a reflux ratio of 1;
FIG. 5 is a block diagram of the reflux ratio control system at a reflux ratio of 0;
FIG. 6 is a block diagram of the reflux ratio control system at a reflux ratio of 1;
in the figure: 1 is a connecting shaft sleeve, 2 is a connecting shaft, 3 is a motor base, 4 is a sealing gasket, 5 is a shifting sheet,
6 is a guide block, 7 is a switch fixing ring, 8 is a mounting seat, 9 is a linear motor, 10 is an O-shaped ring, and 11
The device is a torsion spring, 12 is a cylindrical pin, 13 is a proximity switch, 14 is an inner hexagonal socket head cap screw, 15 is an inner hexagonal flat end set screw, 16 is an inner hexagonal socket head cap screw, 17 is a hexagonal thin nut, 18 is a condenser pipe, 19 is a liquid separating hopper, 20 is a sampling port, and 21 is a return port.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings and specific embodiments thereof, it being understood that
Embodiments of the present invention are illustrated in the drawings, but the invention can be embodied in many different forms
The present invention is not intended to be limited to the embodiments described herein, but rather, these embodiments are provided so that this disclosure will be thorough and complete.
The invention comprises a driving mechanism, a telescopic mechanism, a displacement detection mechanism and a mounting seat.
The driving mechanism is used for driving the telescopic mechanism; the displacement detection mechanism is used for detecting the position of the telescopic mechanism, and the mounting seat is used for connecting the reflux ratio adjusting device to the steam reflux system.
The telescopic mechanism comprises a connecting shaft sleeve, a connecting shaft, a shifting piece, a guide block, a torsion spring and a cylindrical pin.
One end of the guide block is connected with the driving mechanism, the other end of the guide block is connected with one end of the connecting shaft, and the connecting shaft is fixed by the connecting shaft sleeve and the guide block, so that the connecting shaft can move linearly in the horizontal direction.
The other end of the connecting shaft is provided with a cylindrical pin and a torsional spring, and the shifting piece is movably arranged on the connecting shaft through the cylindrical pin and the torsional spring.
The plectrum is a special engineering plastic with high temperature resistance, corrosion resistance, self lubrication, easy processing and high mechanical strength and excellent performance, the cylindrical pin connected with the plectrum is made of stainless steel, and the side of the connecting shaft connected with the plectrum is provided with a through hole for fixing the plectrum by the cylindrical pin and the torsional spring. The plectrum can swing in a flexible way, and is not fixed completely, so both the installation of being convenient for can also have the cushioning effect when the plectrum promotes the motion of bowl form minute liquid fill, prevents that bowl form minute liquid fill accident from colliding garrulously.
The displacement detection mechanism comprises a switch fixing ring and a proximity switch, the proximity switch is used for detecting whether the guide block is close to the guide block or not and preventing the motor from losing steps, and the proximity switch is fixed on the driving mechanism through the switch fixing ring.
The reflux ratio adjusting device can be used in a laboratory-level distiller, and is combined with a condenser pipe, a liquid separating hopper and other devices to form a distillation reflux system which has two modes of a distillation mode and a reflux mode. When a reflux signal is given, the linear motor drives the telescopic mechanism to recover and contract, and at the moment, the condensed liquid is dripped into a reflux port below the distiller along the bowl-shaped funnel, which is a reflux mode.
The telescopic mechanism in the reflux ratio adjusting device is controlled by the linear motor and the proximity switch together, the set reflux ratio is between 0 and 1, the motion time and the retention time of the motor are controlled according to the proportion, the proximity switch has the function of preventing step loss, the outward extending and retracting strokes of the telescopic mechanism need to be repeated and consistent, the motor drives the telescopic mechanism to run to a certain distance every time, the proximity switch can detect a slider signal, and the proximity switch has the function of automatic correction.
Examples
As shown in fig. 1, a laboratory-level reflux ratio adjusting device comprises a proximity switch 13, a cylindrical pin 12, a torsion spring 11, an O-ring 10, a linear motor 9, a mounting seat 8, a switch fixing ring 7, a guide block 6, a shifting sheet 5, a sealing gasket 4, a motor seat 3, a connecting shaft 2, a connecting shaft sleeve 1 and the like. Linear motor 9 passes through hexagon socket head cap screw 14 to be fixed on motor cabinet 3, switch fixing ring 7 passes through hexagon socket head cap screw 16 to be fixed on motor cabinet 3, guide block 6 is in motor cabinet 3, one end links to each other with linear motor 9, the other end links to each other with connecting axle 2, be used for linear motor 9 to drive connecting axle 2 and be linear motion in connecting axle sleeve 1, O type circle 10 is in connecting axle sleeve 1, prevent that the connecting axle from vibrating at the in-process of motion, proximity switch 13 of guide block 6 upper end passes through hexagon nut 17 to be fixed on motor cabinet 3, guide block 6 is used for making connecting axle 2 can be linear motion under linear motor 9's drive.
The plectrum 5 is made by a special engineering plastics that has high temperature resistant, corrosion-resistant, self-lubricating, easy processing and high mechanical strength excellent performance, and cylindric lock 12 who links to each other is stainless steel, and the connecting axle side that is connected the end with plectrum 5 is equipped with the through-hole for cylindric lock 12 and torsional spring 11 fixed plectrum 5.
As shown in fig. 2 and 5, the reflux regulation ratio device is fixed on the condensation pipe 18 through the mounting seat 8, one surface of the sealing gasket 4 is tightly attached to the connecting shaft sleeve 1, so that the sealing gasket is fixed on the mounting seat 8, and in addition, fraction in the condensation pipe 18 can be prevented from dissipating from the interface between the reflux regulation ratio device and the condensation pipe, so that the accuracy of fraction distillation or reflux is ensured.
As shown in fig. 3 and 4, when the reflux adjustment ratio device works, the linear motor 9 drives the connecting shaft 2 to make a linear motion, when the plectrum 5 moves to the position shown in fig. 3 along with the connecting shaft 2, the state of the reflux adjustment ratio device is the state of the reflux adjustment ratio device during distillation, and fig. 4 is the state of the reflux adjustment ratio device during reflux.
As shown in fig. 5 and 6, fig. 5 is a state of the whole reflux ratio adjusting system during distillation, at this time, the position where the poking piece 5 stays enables fraction in the liquid separating hopper to flow out from the extraction outlet 20 of the condensation pipe, the linear motor 9 controls the connecting shaft 2 to move to drive the poking piece 5 to push the liquid separating hopper to swing so that the fraction in the condensation pipe flows out from the extraction outlet 20, and at this time, the proximity switch 13 has a proximity signal indicating that the system is in a distillation state. Fig. 6 shows a state of the whole reflux ratio control system during distillation, in which the position where the paddle 5 stays allows the fraction in the separatory funnel 19 to directly drip toward the reflux port 21 below the condenser tube. The method for adjusting the reflux ratio is to enable the motor to drive the telescopic mechanism to move for a fixed stroke by giving a signal to the linear motor, and the movement time and the retention time of the linear motor are controlled according to the proportion setting, so that the effect of adjusting the reflux ratio is achieved. The specific duty ratio of the motor is adjusted to enable the motor to drive the shifting piece to move, a certain time step length is set, and the time for keeping the state is kept, so that the effect of adjusting the reflux ratio is achieved, if the reflux ratio is set to be 0.5, then the linear motor 9 can drive the connecting shaft 2 to move to the state shown in the figure 6 during reflux after 5s, and the connecting shaft returns to the distillation state again after 5 s.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, and improvement made within the principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a reflux ratio adjusting device of laboratory level, includes actuating mechanism, telescopic machanism, displacement detection mechanism and mount pad, its characterized in that:
the driving mechanism is used for driving the telescopic mechanism; the displacement detection mechanism is used for detecting the position of the telescopic mechanism, and the mounting seat is used for connecting the reflux ratio adjusting device to the steam reflux system;
the telescopic mechanism comprises a connecting shaft sleeve, a connecting shaft, a shifting piece, a guide block, a torsion spring and a cylindrical pin;
one end of the guide block is connected with the driving mechanism, the other end of the guide block is connected with one end of a connecting shaft, and the connecting shaft is fixed by a connecting shaft sleeve and the guide block, so that the connecting shaft can move linearly in the horizontal direction;
the other end of the connecting shaft is provided with a cylindrical pin and a torsional spring, and the shifting piece is movably arranged on the connecting shaft through the cylindrical pin and the torsional spring;
the displacement detection mechanism comprises a switch fixing ring and a proximity switch, the proximity switch is used for detecting whether the guide block is close to the guide block and preventing the driving mechanism from missing steps, and the proximity switch is fixed on the driving mechanism by the switch fixing ring;
the driving mechanism comprises a linear motor, the telescopic mechanism is controlled by the linear motor and the proximity switch together, the set reflux ratio is between 0 and 1, and the movement time and the retention time of the linear motor are controlled according to the proportion.
2. The laboratory-scale reflux ratio adjusting apparatus as set forth in claim 1, comprising a driving mechanism, wherein:
the driving mechanism further comprises a motor base, the linear motor is fixed on the motor base, the switch fixing ring is also fixed on the motor base, and the guide block is located in the motor base.
3. The laboratory-scale reflux ratio adjusting apparatus as set forth in claim 1, comprising a driving mechanism, wherein:
and an O-shaped ring is also arranged between the connecting shaft and the connecting shaft sleeve and is used for preventing the connecting shaft from generating axial vibration.
4. A steam and reflux system, which comprises a condensation pipe, a liquid separation hopper and the reflux ratio adjusting device of claim 1, and is characterized in that: and a liquid separating hopper is arranged below the condensing pipe and is controlled by the reflux ratio adjusting device, so that an outlet of the liquid separating hopper is positioned at a production outlet or a reflux opening of the condensing pipe.
5. The vapor flow and reflux system as set forth in claim 4, including a drive mechanism, wherein:
the connecting shaft and the connecting shaft sleeve are also provided with a sealing gasket, the sealing gasket isolates the environment in the condensation pipe from the external environment, distillation fractions are prevented from being dissipated from the mounting seat, and a sealing effect is achieved.
6. The steam flow and reflux system as set forth in claim 4, wherein: the duty ratio of the linear motor can be adjusted, and the effect of adjusting the reflux ratio is achieved by setting certain step length time and state maintaining time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195492.XA CN111298474B (en) | 2020-03-19 | 2020-03-19 | Laboratory-level reflux ratio adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195492.XA CN111298474B (en) | 2020-03-19 | 2020-03-19 | Laboratory-level reflux ratio adjusting device |
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| Publication Number | Publication Date |
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| CN111298474A CN111298474A (en) | 2020-06-19 |
| CN111298474B true CN111298474B (en) | 2021-09-24 |
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| CN202010195492.XA Active CN111298474B (en) | 2020-03-19 | 2020-03-19 | Laboratory-level reflux ratio adjusting device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2707345Y (en) * | 2004-04-29 | 2005-07-06 | 天津市宣怀科技有限公司 | Externally-mounted reflux ratio distributor |
| CN202892956U (en) * | 2012-11-20 | 2013-04-24 | 天津市天大北洋化工实验设备有限公司 | Internal reflow device of rectifying tower for laboratory |
| CN202909478U (en) * | 2012-09-27 | 2013-05-01 | 常州市常顺精细化学品有限公司 | Feflux ratio controller for laboratory rectifying device |
| CN205649876U (en) * | 2016-05-11 | 2016-10-19 | 金溪县绿萃香精香料有限公司 | Automatic reflux ratio controller |
| CN207401162U (en) * | 2017-09-20 | 2018-05-25 | 沈阳施博达仪器仪表有限公司 | A kind of lifting stem type reflux ratio distributor |
| CN208541825U (en) * | 2018-05-30 | 2019-02-26 | 河南蔚源生物科技有限公司 | A kind of reflux ratio adjuster |
| CN209917297U (en) * | 2019-03-27 | 2020-01-10 | 南通宝凯药业有限公司 | Glass rectifying head capable of automatically controlling reflux ratio |
-
2020
- 2020-03-19 CN CN202010195492.XA patent/CN111298474B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2707345Y (en) * | 2004-04-29 | 2005-07-06 | 天津市宣怀科技有限公司 | Externally-mounted reflux ratio distributor |
| CN202909478U (en) * | 2012-09-27 | 2013-05-01 | 常州市常顺精细化学品有限公司 | Feflux ratio controller for laboratory rectifying device |
| CN202892956U (en) * | 2012-11-20 | 2013-04-24 | 天津市天大北洋化工实验设备有限公司 | Internal reflow device of rectifying tower for laboratory |
| CN205649876U (en) * | 2016-05-11 | 2016-10-19 | 金溪县绿萃香精香料有限公司 | Automatic reflux ratio controller |
| CN207401162U (en) * | 2017-09-20 | 2018-05-25 | 沈阳施博达仪器仪表有限公司 | A kind of lifting stem type reflux ratio distributor |
| CN208541825U (en) * | 2018-05-30 | 2019-02-26 | 河南蔚源生物科技有限公司 | A kind of reflux ratio adjuster |
| CN209917297U (en) * | 2019-03-27 | 2020-01-10 | 南通宝凯药业有限公司 | Glass rectifying head capable of automatically controlling reflux ratio |
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| CN111298474A (en) | 2020-06-19 |
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