CN203139652U - Non-sealed reciprocating rotary evaporator - Google Patents

Abstract

The utility model discloses a non-sealed reciprocating rotary evaporator which comprises a condenser tube, an evaporating flask, a reciprocating rotary mechanism and a motor, wherein the extended end of the condenser tube is directly connected with the evaporating flask in a sheathing manner, and the reciprocating rotary mechanism clamps the extended end of the condenser tube tightly and is connected with the motor. According to the non-sealed reciprocating rotary evaporator, a manner of running towards one side in the traditional rotary evaporator is changed, so that not only is the absolute airtightness of the evaporator guaranteed, but also the mobility of the solid in the evaporating flask is guaranteed when in rotation. The evaporator not only runs reliably, but also improves the usability; and due to the unique self circulating cooling function of the evaporator, the recovery rate is increased, the environment is protected and water waste is lowered.

Description

A kind of nothing seals reciprocal Rotary Evaporators

Technical field

The utility model relates to a kind of evaporimeter, specifically reciprocal Rotary Evaporators.

Background technology

Rotary Evaporators is worked under reduced pressure perhaps, and for it can rotate and seal, instrument is equipped with sealing device, and the commercially available prod almost all adopts sealing ring to reach the effect of sealing at present.No matter sealing ring quality quality all exists certain gas leak phenomenon in the process of using, make vacuum not ideal enough; And sealing ring work under bad environment of living in is the most flimsy parts in the instrument, although adopt corrosion resistant material to make, also has only the life-span of some months if work long hours, in case damage, also may cause the damage of adjacent glass parts as untimely replacing.Though it is not adopt sealing ring in the patent of CN101920121A that the Japanese has the publication number of He Zhenyi, but its seal member is two sleeve pipes that are provided with frosting, reach sealing effectiveness by lubricant, so the requirement to production technology improves, the power consumption of equipment loss also increases, and its practicality remains further to be observed.Also there are following several problems when instrument uses in addition:

First, in the instrument use, along with the minimizing of solvent, can there be solid to produce gradually in the general evaporative flask, solid can be attached on bottle ancient piece of jade, round, flat and with a hole in its centre, inhomogeneous when adhering to, be most solids when concentrating on the same side of a bottle ancient piece of jade, round, flat and with a hole in its centre, rotation will produce eccentric force, at this moment, instrument can not even running, and increases wearing and tearing; And solid is equivalent to reduce disengagement area after concentrating, and reduced the operating efficiency of instrument, generally can adopt this moment manually " switch " reach the way of " acceleration and deceleration ", changes the coherent condition of solid, but this manual mode of operation inconvenience extremely.

The second, when temperature was higher, the condensation effect of running water did not reach requirement, if without this comparatively expensive equipment of liquid nitrogen, dry ice cooling or employing refrigeration machine, even add the flow velocity of big flood, also have a large amount of low-boiling point materials and taken away by vavuum pump, not only wasted resource but also contaminated environment.

The 3rd, in the existing instrument use, the flow velocity of condensed water is not easy to observe, and needs the labour contractor to stretch into the streamflow regime that can see delivery port in the fume hood sometimes, and this mode may cause operating personnel to suck harmful gas, influences healthy.

The 4th, evaporative flask add thermal recovery water-bath heating, water-bath heats up comparatively slow, the conversion of water temperature also needs the regular hour, just opens water-bath after often entering the laboratory, so both uneconomically also is inconvenient to use.

Summary of the invention

At above-mentioned the deficiencies in the prior art, the purpose of this utility model provides a kind of nothing and seals reciprocal Rotary Evaporators, can guarantee absolute sealing, further improves the serviceability of instrument when saving hydroelectric resources, and simple operation.

For achieving the above object, the technical scheme that the utility model proposes is that a kind of nothing seals reciprocal Rotary Evaporators, comprise condenser pipe, evaporative flask, reciprocating rotating mechanism and motor, direct and the evaporative flask socket of the external part of condenser pipe, reciprocating rotating mechanism tightens the external part of condenser pipe, and links to each other with motor.Reciprocating rotating mechanism is converted into reciprocating motion by motor drives and with the form of the lasting rotation of motor, and then drives condenser pipe and back and forth rotate.

The intake-outlet of described condenser pipe, bleeding point and charging aperture all are wound with one section corrosion resistant flexible pipe and are connected with corresponding anchor tip, make condenser pipe be free to two-way rotation.

Described reciprocating rotating mechanism is constituted by cam, chute, bent axle and partial gear.

Be provided with water pump and reservoir for the condensed water circulation before the intake-outlet of described condenser pipe.It is that the temperature of cooling fluid keeps constant that reservoir can add materials such as ice cube, ice bag.Equipment can according to circumstances switch between cooling water and the interior recirculated cooling water outside.

The heat gun that also comprises the heating evaporation bottle.

Leaving air temp and the wind speed of described heat gun are adjustable.

Beneficial effect: nothing provided by the utility model seals reciprocal Rotary Evaporators, has changed the mode to the same side operation of traditional Rotary Evaporators, namely guarantees the positive confinement of instrument, the flowability of solid in the evaporative flask bottle when having guaranteed rotation again; Instrument is not only reliable, has more improved serviceability.Exclusive self hydronic use has improved the rate of recovery, has also reduced the waste of water in the time of the protection environment.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is that rotating mechanism partly adopts one deck A1 structural representation behind the incomplete gear mechanism in the utility model;

Fig. 3 is that rotating mechanism partly adopts the preceding one deck A2 structural representation of incomplete gear mechanism in the utility model;

Fig. 4 be among Fig. 2 B-B to cutaway view.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, present embodiment is being to implement under the prerequisite with technical solutions of the utility model, should understand these embodiment and only be used for explanation the utility model and be not used in restriction scope of the present utility model.

As shown in Figure 1, have motor 10 and speed regulator 17 on the iron stand 9 and a crossbeam 19 is installed, rotating mechanism 12, heat gun 18 have been installed on the crossbeam 19, in addition a twoport plug 22 is also fixedly arranged, twoport plug 22 lower ends are connected to receiving flask 23.Upper end 3 rotatable being connected on the brace summer 1 of condenser pipe 2, this brace summer is fixed on the rotating mechanism 12, and rotating mechanism 12 is passed in the lower end 21 of condenser pipe 2, and by its drive.In addition, be provided with water pump 7 in the reservoir 8, and can select the interior outer circulation of condensed water by a switch 6.

Respectively behind two circles of the lower end of condenser pipe, connect respectively with three corrosion resistant flexible pipes, 1. work on the reservoir intake-outlet 13 of intake-outlet 4 and condenser pipe, 2. the bleeding point 14 of condenser pipe and twoport entrance 16 beyond the Great Wall, if necessary, charging aperture 15 also can be connected to a fixing interface by flexible pipe.

The structure of reciprocator inside is shown in Fig. 2-4, and casing mechanism 11 is divided into preceding A2, A1 is two-layer in the back, in the layer of back, mainly contain be used to the supported hole 25 that passes condenser pipe, and the worm screw 29 that connects motor shaft, worm gear 30 cooperates with worm screw 29.Have a partial gear 32 in the anterior layer, when it continues to rotate, according to the difference of turned position, last side gear 31 and the downside gear 35 of difference interlock slider bar 36; Partial gear 32 rotates a circle, and then slider bar about 36 moves back and forth a circulation.The spur rack 28 of slider bar one side with after the spur rack 35 of opposite side has twisted certain angle be socketed in condenser pipe on gear 27 cooperate.

Wherein worm gear 30 and partial gear 32 are made integral structure 33, two-layer parts are joined together before and after making in the mechanism, that is: after worm screw 29 was rotated, worm gear 30 and partial gear 32 were driven in rotation, so slider bar 36 horizontally slips, drive condenser pipe at last and back and forth rotate.

The process (see figure 1) is as follows during use:

1, in reservoir 8, adds an amount of mixture of ice and water, regulate recirculated water switch 6 to interior circulation, open condensed water water circulating pump 7, make in the serpentine coil in the condenser pipe 2 to have recirculated cooling water, watch current meter 5, regulate the flow velocity of condensed water.

2, another mouth of twoport plug 2 connects vavuum pump, behind the unlatching vavuum pump, by charging aperture 15, adds a certain amount of organic solution to be distilled in evaporative flask 20 by negative pressure, closes the valve of charging aperture 15 then.

3, open motor 10 and regulate rotating speed by speed regulator 17.This moment, condenser pipe 2 and evaporative flask 20 will back and forth rotate under the drive of reciprocating rotating mechanism, and the organic solvent in the evaporative flask 20 is drawn as liquid film, thereby has increased the disengagement area of solvent.

4, heat gun 18 is adjusted to suitable position, after the unlatching, regulate leaving air temp and wind speed according to the character of institute's evaporating solvent, thereby it is heated, this organic solvent is evaporation rapidly under condition of high vacuum degree, the condition of being heated.

5, the organic solvent in the evaporative flask 20 is evaporated, after enter in the condenser pipe 2, condensation flows to and gives vent to anger/liquid mouth 14 then, and then the entrance 16 by flexible pipe and diplopore plug enters returnable bottle and (does not influence instrument work if the phenomenon of hydrops takes place in condenser pipe, just can be addressed this problem by charging aperture 15 an amount of venting), finish until organic solution recovery to be evaporated, if solvent to be evaporated is more, can't once join and then repeat said process in the evaporative flask 20, finish until concentrating and reclaiming.

6, close the switch of speed regulator 17 and heat gun 18, stop the rotation and heat.

7, open the valve of air inlet/material mouth 15, the air pressure in the equilibrium system is finished whole operations.

Claims (6)

1. one kind is not had the reciprocal Rotary Evaporators of sealing, comprise condenser pipe (2), evaporative flask (20), reciprocating rotating mechanism (12) and motor (10), it is characterized in that: direct and evaporative flask (20) socket of the external part (21) of condenser pipe (2), reciprocating rotating mechanism (12) tightens the external part (21) of condenser pipe (2), and links to each other with motor (10).

2. seal reciprocal Rotary Evaporators according to the described a kind of nothing of claim 1, it is characterized in that: the intake-outlet (13) of described condenser pipe (2), bleeding point (14) and charging aperture (15) all are wound with one section corrosion resistant flexible pipe and are connected with corresponding anchor tip, make condenser pipe (2) be free to two-way rotation.

3. seal reciprocal Rotary Evaporators according to the described a kind of nothing of claim 1, it is characterized in that: described reciprocating rotating mechanism (12) is constituted by cam, chute, bent axle and partial gear.

4. seal reciprocal Rotary Evaporators according to the described a kind of nothing of claim 2, it is characterized in that: preceding water pump (7) and the reservoir (8) that is provided with for the condensed water circulation of the intake-outlet (13) of described condenser pipe (2).

5. seal reciprocal Rotary Evaporators according to the described a kind of nothing of claim 1, it is characterized in that: the heat gun (18) that also comprises heating evaporation bottle (20).

6. seal reciprocal Rotary Evaporators according to the described a kind of nothing of claim 5, it is characterized in that: leaving air temp and the wind speed of described heat gun (18) are adjustable.

Images