CN114748883B - Rotary evaporator - Google Patents

Abstract

The invention relates to a rotary evaporator, which is improved on the existing rotary evaporator, a traditional installation mode is set to be that a connecting cylinder is provided with an accommodating groove, the inner side wall of the accommodating groove is provided with oblique strip holes, clamping blocks are in sliding fit with each other, a driving rod is connected with the clamping blocks in a radial sliding manner, a driving ring is limited by a limiting column arranged axially, the driving rod moves along with the axial direction of a driving knob, the clamping blocks tightly move along the direction of the strip holes, the clamping blocks are matched with a convex edge structure on a bottle opening of a rotary bottle to realize the clamping effect, and meanwhile, a hot bath device is arranged to be adjustable along three directions.

Description

Rotary evaporator

Technical Field

The invention belongs to the technical field of chemical reaction containers, and particularly relates to a rotary evaporator.

Background

The rotary evaporator, also called rotary evaporator, is one kind of evaporating instrument for laboratory use, and consists of motor, distiller, heating pot, condensating pipe, etc. and is used in continuous distillation of volatile solvent under reduced pressure and in chemical, chemical and biological medicine fields. Rotary evaporators can be used to recover and evaporate organic solvents. It uses a motor to drive the distillation flask to rotate. Because the distiller is continuously rotated, zeolite can be avoided from being added and bumping can be avoided. Meanwhile, as the liquid continuously rotates, the liquid is attached to the wall of the distiller to form a layer of liquid film, so that the evaporation area is enlarged, and the evaporation speed is increased. Thus, rotary evaporators are an unreliable part of modern chemical production activities.

The prior rotary evaporator usually adopts an independent knob when installing the rotary bottle, two groups of semi-arc rubber rings are matched, the rotary bottle is clamped at the convex edge position of the rotary bottle, then the rotary bottle is matched with the knob through threads at the joint, the rotary evaporator is clamped at the connecting position, the connecting mode is complex, the operation is troublesome, the rubber rings and the rotary knob matched with the corresponding rotary bottle are singly present, and the rotary evaporator is very easy to lose, so that a connecting device convenient for installing the rotary bottle with different sizes and apertures is arranged at the joint, the rotary bottle can be installed at the joint without adopting an additional rubber ring and a driving knob, meanwhile, the size and the type of the rotary bottle adopted by the connecting device are different when different liquids are evaporated, so that the connecting device is suitable for installing the rotary bottle with different aperture sizes, and meanwhile, the conventional hot bath pot only has the lifting function, when the rotary bottle with different sizes and lengths is adopted, the position of the rotary pot is required to be regulated, the rotary bottle is positioned at the central position of the hot bath pot, the heating uniformity is ensured, the trouble is well regulated, and the problem is solved on the basis that the rotary evaporator is not developed.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention aims to provide a rotary evaporator which is used for solving the problems that the rotary bottle on the existing rotary evaporator mentioned in the background art is inconvenient to install, the rotary bottle with different apertures cannot be used, and meanwhile, the adjustment of the position of a hot bath pot is labor-consuming and inaccurate in position adjustment.

The technical aim of the invention is realized by the following technical scheme:

the rotary evaporator comprises a frame body, wherein a rotary machine head which is arranged in an axial inclined manner is arranged on the frame body, a driving motor is connected to the rotary machine head, a connecting cylinder which is driven to rotate by the driving motor is connected to the lower end of the rotary machine head, and a transition cylinder is connected to the upper end of the rotary machine head;

the upper end of the communicating bottle is communicated with a charging hopper, a charging valve is arranged on the charging hopper, a liquid injection pipe extending into the rotary bottle is axially communicated in the charging hopper along a connecting cylinder, the rear end of the communicating bottle is communicated with a main condenser which is vertically arranged on a frame body, the upper end of the main condenser is communicated with a secondary condenser, the upper end of the secondary condenser is communicated with an air extraction flange, the air extraction flange is communicated with a vacuum air pump system, the vacuum air pump system is satisfied to vacuum air the rotary bottle, the lower end of the secondary condenser is communicated with a recovery bottle, the lower end of the recovery bottle is connected with a discharge port, the discharge port is provided with a discharge valve, and the upper end of the recovery bottle is respectively communicated with two groups of air inlet and outlet valves;

the detachable mounting structure comprises an annular groove body which is arranged on the inner side wall of the lower end of the connecting cylinder, the inner diameter of the annular groove body is matched with the outer diameter of the bottle mouth of the rotary bottle, a plurality of groups of containing grooves are uniformly distributed on the side wall of the lower end of the connecting cylinder along the circumferential direction, strip-shaped holes which are obliquely arranged are formed in the two inner side walls of the containing grooves, clamping blocks are slidably matched between the two groups of strip-shaped holes in the same containing groove, one side of each clamping block, which faces the axis of the connecting cylinder, is of an inclined surface structure with a wide upper part and a narrow lower part, the clamping blocks are internally and slidably connected with a driving rod along the radial direction of the connecting cylinder, the inside of each clamping block is axially connected with a limit column which is slidably penetrated with the driving rod along the axial direction of the connecting cylinder, the driving rod can only axially move along the connecting cylinder relative to the limit column, a driving knob which is in threaded fit outside the connecting cylinder is further comprises a driving knob, the inner side wall of the driving knob is circumferentially provided with a T-shaped sliding block which is slidably matched with the guide groove, the T-shaped sliding block which can only circumferentially move along the guide groove direction, the outer side of the T-shaped sliding block is connected with a threaded locking device, and the driving knob is prevented from being in the threaded fit with the screw thread of the driving knob of the connecting knob;

the lower end of the frame body is provided with a hot bath device arranged below the rotary bottle, a self-adjusting system is arranged in the hot bath device, the self-adjusting system in the hot bath device is used for adaptively adjusting the position of the rotary bottle, and the hot bath device, the vacuum air pump system and the driving motor are electrically connected with a controller arranged on the frame body;

the hot bath device comprises a fixed seat connected to the lower end of the frame body, the upper end of the fixed seat is longitudinally and slidably connected with a first support, a first electric telescopic rod arranged on the fixed seat is connected between the first support and the fixed seat, the upper end of the first support is transversely and slidably connected with a second support, a second electric telescopic rod arranged on the first support is connected between the second support and the first support, the upper end of the second support is vertically and slidably connected with a third support, a lifting motor is connected between the third support and the second support, and the lifting motor drives the third support to vertically and relatively move relative to the second support;

the electric heating wire and the temperature sensor are arranged in the third support, rectangular grooves are formed in the side walls of the periphery of the third support, a rotating plate is connected in the rectangular grooves in a rotating mode, a cylinder is connected to one side face of the rotating plate, which faces the pot body, of the rotating plate, a telescopic column is matched in the cylinder in a sliding mode, a piezoelectric sensor is connected to the inner bottom face of the cylinder, a second spring is connected between the telescopic column and the piezoelectric sensor of the inner bottom face of the cylinder, a judging circuit is connected between the four groups of piezoelectric sensors, and the judging circuit controls the first electric telescopic rod, the second electric telescopic rod and the lifting motor to work through a controller;

the bevel gears connected through the end parts are meshed between two adjacent rotating plate rotating shafts, one ends of the rotating shafts of the two groups of rotating plates are coaxially connected with an output shaft of a self-locking motor arranged on a third support, and the first electric telescopic rod, the second electric telescopic rod, the lifting motor, the electric heating wire, the temperature sensor, the judging circuit and the self-locking motor are electrically connected with the controller.

Preferably, the thread locking device comprises a drive nut which is in threaded connection outside the connecting cylinder and is arranged above the drive knob, the thread rotation direction between the drive nut and the connecting cylinder is opposite to that between the drive knob and the connecting cylinder, a plurality of groups of axially arranged fixed cylinders are uniformly distributed on one side surface of the drive nut facing the drive knob in the circumferential direction, a plurality of groups of telescopic rods which are axially and slidably matched in the fixed cylinders are uniformly distributed on one side surface of the drive knob facing the drive nut in the circumferential direction, and a plurality of groups of first springs which are sleeved outside the corresponding fixed cylinders are connected between the drive knob and the drive nut.

Preferably, the inner side surface of the upper end of the transition cylinder is provided with an inner groove body, the inner groove body is matched with the bottle mouth of the communicating bottle, the transition cylinder further comprises two groups of semi-arc rubber rings matched with each other, and the transition cylinder further comprises a connecting knob screwed outside the transition cylinder and matched with the rubber rings.

Preferably, the inner bottom surface of the annular groove is connected with a rubber ring.

Preferably, the vacuum air pump system comprises an air pipe connected with the air extraction flange, a vacuum gauge is arranged on the air pipe, the other end of the air pipe is connected with an air pump, and the air pump and the vacuum gauge are electrically connected with the controller.

Preferably, the connection device is arranged between the main condenser and the auxiliary condenser, between the auxiliary condenser and the air extraction flange, between the main condenser and the recovery bottle, and between the connection bottle and the main condenser, and comprises a semicircular arc rod matched with the convex edge of the end part of the corresponding pipe body, the two groups of arc rods are hinged to form an arc rod body structure, the other end of each arc rod is provided with a U-shaped groove, the two groups of U-shaped grooves are matched, a plurality of groups of threaded holes are connected on each arc rod, the arc rod body structure matched with the arc rod body structure is connected through bolts in the threaded holes in a threaded mode, and the U-shaped grooves are connected through detachable bolts.

Preferably, the main condenser and the auxiliary condenser are respectively provided with a cooling liquid inlet and a cooling liquid outlet.

Preferably, the main condenser fixing frame for fixedly installing the main condenser is installed on the frame body, the auxiliary condenser fixing frame for fixedly installing the auxiliary condenser is installed on the frame body, and the recovery bottle fixing frame for fixedly installing the recovery bottle is installed on the frame body.

The invention has the beneficial effects that: according to the invention, the traditional rotary evaporator is improved, the traditional rotary bottle mounting mode is set as that the connecting cylinder is provided with the accommodating groove, the inner side wall of the accommodating groove is provided with the inclined strip hole, the clamping blocks are in sliding fit with each other, the driving rod is radially connected with the driving ring in a sliding manner, the driving ring is limited by the limiting column arranged in the axial direction, the driving rod moves along the axial direction of the driving knob, the clamping blocks tightly move along the direction of the strip hole, the clamping blocks are matched with the convex edge structure on the bottle mouth of the rotary bottle to realize the clamping effect, meanwhile, the hot bath device is arranged to be adjustable along three directions, the piezoelectric sensor is triggered through the telescopic rod body structure, and the four groups of piezoelectric sensors regulate the position of the hot bath pot through the judging circuit.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the present invention at a second perspective view.

Fig. 3 is a front view of the present invention.

Fig. 4 is a side view of the present invention.

Fig. 5 is a top view of the present invention.

Fig. 6 is a cross-sectional view of A-A in fig. 5.

Fig. 7 is an enlarged view of a portion a in fig. 6.

Fig. 8 is a schematic view of the section view B-B of fig. 5 after adjusting the position.

Fig. 9 is a perspective view showing a connecting portion between the communicating vessel and the spin-flask in the present invention.

Fig. 10 is a perspective view of a communicating vessel and a connecting portion thereof according to the present invention.

Fig. 11 is a perspective view of a hopper according to the present invention.

Fig. 12 is a perspective view of a part of the detachable mounting structure of the present invention.

Fig. 13 is a perspective view of a part of the detachable mounting structure of the present invention from a perspective two.

Fig. 14 is a perspective view showing a driving knob and a connection portion thereof according to the present invention.

Fig. 15 is a perspective view showing the connection of the main condenser and the sub-condenser in the present invention.

Fig. 16 is a perspective view of a connecting device according to the present invention.

FIG. 17 is a perspective view showing the structure of the hot bath apparatus of the present invention.

FIG. 18 is a perspective view showing a section of a rotary plate and a connecting portion thereof in the hot bath apparatus according to the present invention.

In the figure, 1, a frame body; 2. rotating the machine head; 3. a driving motor; 4. a connecting cylinder; 5. a transition barrel; 6. a communicating bottle; 7. rotating the bottle; 8. a charging hopper; 9. a charging valve; 10. a liquid injection pipe; 11. a main condenser; 12. a secondary condenser; 13. an air extraction flange; 14. recovering the bottle; 15. a discharge port; 16. a discharging valve; 17. an air inlet and outlet valve; 18. an annular groove body; 19. a receiving groove; 20. a slit hole; 21. a clamping block; 22. a driving rod; 23. a limit column; 24. driving a knob; 25. a guide groove; 26. a T-shaped slider; 27. a drive nut; 28. a fixed cylinder; 29. a telescopic rod; 30. a first spring; 31. a fixing seat; 32. a first support; 33. a first electric telescopic rod; 34. a second support; 35. a second electric telescopic rod; 36. a third support; 38. a hot bath pan; 39. rectangular grooves; 40. a rotating plate; 41. a cylinder; 42. a telescopic column; 43. a second spring; 44. bevel gears; 45. a self-locking motor; 46. an inner tank body; 47. a rubber ring; 48. a connecting knob; 49. a rubber ring; 50. a vacuum gauge; 51. an arc rod; 52. a U-shaped groove; 53. a threaded hole; 54. a bolt; 55. a cooling liquid inlet; 56. a cooling liquid outlet; 57. a main condenser fixing frame; 58. an auxiliary condenser fixing frame; 59. and (5) recovering the bottle fixing frame.

Description of the embodiments

The following describes embodiments of the present invention in further detail with reference to FIGS. 1-18.

The first embodiment, in view of the technical problem mentioned in the background art, this embodiment discloses a rotary evaporator, including a frame body 1, install the rotary head 2 that the axial inclines to set up on the frame body 1, its oblique angle is chosen according to the conventional design of the prior art, be connected with driving motor 3 on the rotary head 2, the rotary head 2 lower extreme is connected with the connecting cylinder 4 that drives the rotation through driving motor 3, driving motor 3 is used for producing the rotation through connecting cylinder 4, the upper end of rotary head 2 is connected with transition cylinder 5, transition cylinder 5 and connecting cylinder 4 are coaxial and set up and communicate, the upper end of transition cylinder 5 is detachably connected with the communicating bottle 6, detachable connection mode here can adopt mention detachable connection mode in the background art, specifically, open at the upper end medial surface of transition cylinder 5 has inside groove 46, the internal diameter of inside groove 46 is smaller than the internal diameter of transition cylinder 5, the internal diameter of inside groove 46 is the same with the external diameter of the protruding edge of communicating bottle 6 department, still include two sets of matched rubber rings 47 and use the rubber rings, the two sets of rubber rings 47 are connected with the annular rings 48 and can be connected with the annular rings 48 in the annular rings 48, the annular rings 48 are connected with the annular rings 48, the annular rings 48 are not in the annular rings 48 are connected with each other, the annular rings 48 can be screwed and the annular rings are connected with each other;

the upper end of the communicating bottle 6 is communicated with a charging hopper 8, the charging hopper 8 is provided with a charging valve 9, the charging hopper 8 can charge the rotary bottle 7 through a charging port at the end part, the charging hopper 8 is axially communicated with a liquid injection pipe 10 extending into the rotary bottle 7 along the connecting cylinder 4, the liquid injection pipe 10 is arranged for enabling liquid to rapidly reach the rotary bottle 7, the rear end of the communicating bottle 6 is communicated with a vertically arranged frame body 1, a main condenser 11 is fixedly arranged through a main condenser fixing frame 57 arranged on the frame body 1 in a connection mode similar to a clamp, the main condenser is not expanded and described any more, the upper end of the main condenser 11 is communicated with a secondary condenser 12, the secondary condenser 12 is fixedly arranged through a secondary condenser fixing frame 58 arranged on the frame body 1 in a connection mode similar to a clamp, the connection mode is not expanded and described any more, the upper end of the auxiliary condenser 12 is communicated with an air suction flange 13, the air suction flange 13 is communicated with a vacuum air pump system, the vacuum air pump system is satisfied to vacuum-suck the interior of the rotary bottle 7, the air suction flange 13 is connected with a vacuum gauge 50 through an air pipe connected with the air suction flange, the other end of the air pipe is connected with an air pump to realize the air suction work of the rotary bottle 7, thereby realizing the purpose of vacuum suction, the lower end of the auxiliary condenser 12 is communicated with a recovery bottle 14, the recovery bottle 14 is fixedly installed through a recovery bottle fixing frame 59 installed on the frame body 1, the connection mode is similar to a clamp, the description is not expanded any more, the lower end of the recovery bottle 14 is connected with a discharge port 15, a discharge valve 16 is arranged on the discharge port 15, the discharge port 15 is used for collecting the evaporated and cooled liquid, the upper end of the recovery bottle 14 is respectively communicated with two groups of air inlet and outlet valves 17, the pressure relief treatment can be carried out through the air inlet and outlet valve 17, the main condenser 11 and the auxiliary condenser 12 are respectively provided with a cooling liquid inlet 55 and a cooling liquid outlet 56, the cooling liquid inlet 55 and the cooling liquid outlet 56 are respectively connected with a circulating cooling device, the effect of circulating cooling is realized, meanwhile, the main condenser 11 and the auxiliary condenser 12, the auxiliary condenser 12 and the air suction flange 13 and the main condenser 11 and the recovery bottle are connected through connecting devices, the connecting devices comprise semicircular arc rods 51 matched with the convex edges of the corresponding pipe body end parts, the two groups of arc rods 51 are hinged to form a circular arc rod body structure, the other ends of the arc rods 51 are provided with U-shaped grooves 52, the two groups of U-shaped grooves 52 are matched with each other, a plurality of groups of threaded holes 53 are connected to the arc rods 51, the matched with each other are connected through bolts 54 in the threaded holes 53, the U-shaped grooves 52 are connected through detachable bolts 54, the arc rod body structures on the upper side and the lower side are connected through the bolts 54, and position adjustment in the vertical direction is carried out, so that the vertical adjustment work can be carried out, and the U-shaped rods 52 can be adjusted by the U-shaped grooves 52 and the U-shaped grooves 52 can be adjusted to be placed in the U-shaped grooves 54, and the U-shaped grooves 52 can be adjusted to be opened by the vertical grooves and the U-shaped grooves 52 can be adjusted by the vertical grooves to be opened by the U-shaped grooves 54.

The detachable mounting structure comprises an annular groove body 18 which is arranged on the inner side wall of the lower end of the connecting cylinder 4, a rubber ring 49 is connected to the inner bottom surface of the annular groove body 18, the rubber ring 49 plays a role of buffering protection, meanwhile, the sealing effect is achieved, the inner diameter of the annular groove body 18 is matched with the outer diameter of the bottle opening of the rotary bottle 7, the inner diameter of the convex edge of the bottle opening of the rotary bottle 7 is smaller than that of the annular groove body 18, a plurality of groups of containing grooves 19 are uniformly distributed on the side wall of the lower end of the connecting cylinder 4 along the circumferential direction, strip holes 20 which are obliquely arranged are formed on the two inner side walls of the containing grooves 19, clamping blocks 21 are slidably matched between the two groups of strip holes 20 in the same containing groove 19, the moving direction of the clamping blocks 21 moves towards the convex edge direction of the bottle opening, the side of the clamping blocks 21 towards the axis of the connecting cylinder 4 is in an inclined plane structure with the upper width and the lower width, the upper straight surface structure is matched with the convex edge of the bottle opening of the rotary bottle 7, the inner diameter of the annular groove body 18 is matched with the outer diameter of the bottle opening of the rotary bottle 7, a plurality of groups of containing grooves 19 are uniformly distributed on the side wall of the lower end of the connecting cylinder 4 along the circumferential direction, strip holes 20 which are obliquely arranged are formed on the two inner side walls of the containing grooves 19, clamping blocks 21 are slidably matched between the two groups of strip holes 20 in the same containing groove 19, one side of the clamping blocks 21, which faces the axis of the connecting cylinder 4, is of an inclined surface structure with wide upper part and narrow lower part, the clamping blocks 21 are slidably connected with a driving rod 22 along the radial direction of the connecting cylinder 4, the clamping blocks 21 are radially provided with through holes, the driving rod 22 passes through the through holes, so that the driving rod 22 can only relatively move along the radial direction relative to the clamping blocks 21, a limiting column 23 which slides through the driving rod 22 is axially connected in the containing direction, the driving rod 22 can only axially move along the connecting cylinder 4 relative to the limiting column 23, the limiting column 23 is used for limiting the driving rod 22 to rotate, the driving rod 22 can only relatively move along the axial direction of the accommodating groove 19 due to the arrangement of the limiting column 23, the driving rod further comprises a driving knob 24 which is in threaded fit with the outside of the connecting cylinder 4, a guide groove 25 with a T-shaped section is formed in the inner side wall of the driving knob 24 along the circumferential direction, a T-shaped sliding block 26 which is in sliding fit with the guide groove 25 is connected to the end part of the limiting column 23, the T-shaped sliding block 26 can only move along the direction of the guide groove 25, the purpose of the arrangement is that the driving knob 24 moves to drive the driving rod 22 to move in the axial direction, the clamping block 21 moves in the direction of the strip hole 20, the effect of clamping and unlocking the convex edge of the rotary bottle 7 is achieved, and a threaded locking device is connected to the outside of the driving knob 24, so that the threaded locking device prevents the driving knob 24 from loosening with the thread fit outside the connecting cylinder 4;

the lower end of the frame body 1 is provided with a hot bath device arranged below the rotary bottle 7, the hot bath device is internally provided with a self-regulating system, the self-regulating system in the hot bath device is used for self-adaptively regulating the position of the rotary bottle 7, the hot bath device, the vacuum air pump system and the driving motor 3 are all electrically connected with a controller arranged on the frame body 1, the controller is made of an integrated CPU chip, the time sequence is used for controlling each device to work, the controller is started and closed, the prior art is omitted, when the embodiment is used, a connecting bottle is arranged on the transition cylinder 5 through a connecting knob 48, the main condenser 11, the auxiliary condenser 12 and the recovery bottle are arranged on the bracket through a clamp, meanwhile, the air extraction flange 13 and the auxiliary condenser 12, the main condenser 11 and the recovery bottle and the communication bottle 6 and the main condenser 11 are connected through the connecting device, after connection, the rotary bottle 7 is inserted into the accommodating groove 19, the driving knob 24 drives the driving rod 22 to move along the axial direction, the driving rod 22 moves axially, the clamping blocks 21 are driven to move along the strip holes 20 under the limiting action of the limiting columns 23, the convex edges of the bottle mouth of the rotary bottle 7 are clamped by the multiple groups of clamping blocks 21, after clamping, a charging switch on the charging hopper 8 is opened, the rotary bottle 7 is closed after liquid is input, then a vacuum system is controlled by a controller to pump air on the air pumping flange 13, vacuum is completed, then the hot bath device is regulated to place the rotary bottle 7 at the exact center of the hot bath device, so that heating is uniform, and simultaneously, the inlet and the outlet of the condenser are connected with a cooling circulation system, then open hot bath device through the controller and heat rotatory bottle 7, open driving motor 3 through the controller simultaneously, carry out rotatory evaporation work, steam cools off through the condenser, then collect in retrieving the bottle, after the evaporation, close hot bath device and driving motor 3 through the controller, carry out the blowing through the relief hole 15 of retrieving the bottle lower extreme, then dismantle the back with whole device and incline, wait for the next time to use, this embodiment convenient operation is simple, rotatory bottle 7 simple to operate, can use the installation work of rotatory bottle 7 of equidimension and length, can not adopt independent drive knob 24 to connect, save unnecessary trouble, simultaneously hot bath device can carry out automatic location when carrying out the rotatory bottle 7 of equidimension and model and heat, labour saving and time saving, the regulation precision is high, high reaction efficiency, the practicality is strong, be fit for using widely.

In the second embodiment, on the basis of the first embodiment, a threaded locking device is disclosed in the first embodiment, the threaded locking device includes a driving nut 27 which is in threaded connection outside the connecting cylinder 4 and is arranged above the driving knob 24, the threaded rotation direction between the driving nut 27 and the connecting cylinder 4 is opposite to the threaded rotation direction between the driving knob 24 and the connecting cylinder 4, so that the driving nut 27 and the driving knob 24 rotate along with the connecting cylinder 4, the driving nut 27 and the driving knob 24 move towards directions approaching or separating from each other, a plurality of groups of fixing cylinders 28 which are axially arranged are uniformly distributed on one side surface of the driving nut 27 towards the driving knob 24 in a circumferential direction, a plurality of groups of telescopic rods 29 which are axially and slidably matched in the fixing cylinders 28 are uniformly distributed on one side surface of the driving knob 24 towards the driving nut 27, the fixing cylinders 28 and the telescopic rods 29 form a telescopic rod body, the driving knob 24 and the driving nut 27 are ensured to synchronously rotate, a plurality of groups of first springs 30 sleeved outside the corresponding fixing cylinders 28 are connected between the driving knob 24 and the driving nut 27, and the first springs 30 play a role of supporting the driving knob 24 in opposite directions or pulling the driving knob 24, and the driving knob 24 can be matched with the driving knob 24 more reliably.

In the third embodiment, on the basis of the first embodiment, a hot bath device is disclosed in the first embodiment, the hot bath device comprises a fixed seat 31 connected to the lower end of a frame body 1, the upper end of the fixed seat 31 is connected with a first support 32 in a sliding manner along the longitudinal direction, a connection mode of a T-shaped sliding rail and a groove body is adopted between the fixed seat 31 and the first support 32, a first electric telescopic rod 3329 mounted on the fixed seat 31 is connected between the first support 32 and the fixed seat 31, the upper end of the first support 32 is connected with a second support 34 in a sliding manner along the transverse direction, a second electric telescopic rod 3529 mounted on the first support 32 is connected between the second support 34 and the first support 32, the first electric telescopic rod 3329 and the second electric telescopic rod 3529 play a role in adjusting the longitudinal direction and the transverse direction, a third support 36 is vertically connected with the upper end of the second support 34 in a sliding manner, a lifting motor is connected between the third support 36 and the second support 34, and the lifting motor drives the third support 36 to move vertically relative to the second support 34, so that the position adjustment in three directions is completed;

the third support 36 is internally provided with a hot bath pan 38, an electric heating wire and a temperature sensor are arranged in the hot bath pan 38, the heating and temperature monitoring of the hot bath pan 38 are realized, the four side walls of the third support 36 are provided with rectangular grooves 39, a rotating plate 40 is connected in the rectangular grooves 39 in a rotating way, the rotating plate 40 can lift and retract in the rectangular grooves 39, one side surface of the rotating plate 40, facing the pan body, is connected with a cylinder 41, a telescopic column 42 is in sliding fit in the cylinder 41, the inner bottom surface of the cylinder 41 is connected with a piezoelectric sensor, a second spring 43 is connected between the telescopic column 42 and the piezoelectric sensor at the inner bottom surface of the cylinder 41, so that the positions of the rotating bottle 7 are judged, a judging circuit is connected between the four groups of piezoelectric sensors, once the positions of the telescopic rod 29 at any side are different from the positions of other cylinders, the piezoelectric sensors can be connected to the same current values of the piezoelectric sensors at the same positions in the middle of the cylinder 41, and the current values of the piezoelectric sensors can be monitored by the electric current values of the piezoelectric sensors at the positions of the cylinders 38;

the two adjacent rotating plates 40 are meshed through bevel gears 44 connected through end parts, one end of each rotating shaft of the two rotating plates 40 is coaxially connected with an output shaft of a self-locking motor 45 arranged on a third support 36, the rotating shafts of the rotating plates 40 are in a group, the end parts of the rotating shafts of the two rotating plates 40 are in driving connection through the bevel gears 44, one section of each rotating shaft of one rotating plate 40 of the two rotating plates is provided with the self-locking motor 45, the rotating plates 40 are controlled to rise or retract into the accommodating groove 19, the first electric telescopic rod 3329, the second electric telescopic rod 3529, the lifting motor, an electric heating wire, a temperature sensor, a judging circuit and the self-locking motor 45 are all electrically connected with the controller, when the automatic-locking motor is used, the rotating plates 40 are raised through the matching of four telescopic columns 42 and corresponding second springs 43, the piezoelectric sensors are triggered, judgment is carried out through the judging circuit, if the currents of the two piezoelectric sensors of the two groups in the transverse direction are inconsistent, the second electric telescopic rod 3529 is adjusted, the two groups of piezoelectric sensors in the transverse direction are controlled to rise or retract into the accommodating groove 19, the electric telescopic rod 3529 is adjusted until the position of the telescopic rod is well-controlled to retract into the accommodating groove 19, and the self-locking motor is accurately controlled to realize the purpose of adjusting and controlling the position of the rotating plate 40 through the self-locking motor 45.

When the invention is used, the connecting bottle is arranged on the transition cylinder 5 through the connecting knob 48, the main condenser 11, the auxiliary condenser 12 and the recovery bottle are arranged on the bracket through the clamp, meanwhile, the air extracting flange 13, the auxiliary condenser 12, the main condenser 11, the recovery bottle, the communicating bottle 6 and the main condenser 11 are connected through the connecting device, after the connection is finished, the rotating bottle 7 is inserted into the accommodating groove 19, the driving knob 24 is driven to rotate through the driving nut 27, the driving nut 27 and the driving knob 24 move towards the same or opposite directions due to the arrangement mode of the reverse threads, the threaded matching effect is more ideal, the easy loosening of the nuts does not occur, the driving of the driving knob 24 causes the driving rod 22 to move along the axial direction, the axial movement of the driving rod 22 drives the clamping blocks 21 to move along the strip holes 20 under the limiting action of the limiting columns 23, the groups of clamping blocks 21 clamp the convex edges of the bottle mouth of the rotary bottle 7, after clamping is finished, a charging switch on the charging hopper 8 is turned on, liquid is input into the rotary bottle 7 and then is closed, then a vacuum system is controlled by a controller to pump air on the air pumping flange 13 to finish vacuum, then a self-locking motor 45 is started, four groups of rotary plates 40 are lifted, piezoelectric sensors are triggered through the cooperation of four groups of telescopic columns 42 and corresponding second springs 43, judgment is carried out through a judging circuit, if the currents of the two groups of piezoelectric sensors in the transverse direction are inconsistent, the second electric telescopic rod 3529 is adjusted, similarly, if the currents of the two groups of piezoelectric sensors in the transverse direction are inconsistent, the second electric telescopic rod 3529 is adjusted, until the position of four groups of telescopic links 29 triggers the value of judging the circuit unanimously, then state that rotatory bottle 7 is in the very center of hot bath 38, realize the purpose of accurate regulation and control, after regulating and control, withdraw rotatory plate 40 to holding tank 19 through self-locking motor 45, then open hot bath 38 through the controller, make it is even to be heated, the import and the export of condenser are connected with cooling circulation system simultaneously, open driving motor 3 through the controller, rotatory evaporation work is carried out, steam cools off through the condenser, then collect in the recovery bottle, after the evaporation finishes, close hot bath device and driving motor 3 through the controller, carry out the blowing through the relief hole 15 of recovery bottle lower extreme, then incline after dismantling whole device, wait for the next time to use, the invention convenient operation is simple, rotatory bottle 7 simple to operate, can use the installation work of rotatory bottle 7 of equidimension and length, can not adopt independent driving knob 24 to connect, save unnecessary trouble, automatic positioning when rotatory bottle 7 of equidimension and model carries out the heating simultaneously, high practicality and high efficiency, and high practicality and popularization.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (8)

1. The rotary evaporator comprises a frame body (1), wherein a rotary machine head (2) which is obliquely arranged in the axial direction is installed on the frame body (1), a driving motor (3) is connected to the rotary machine head (2), a connecting cylinder (4) which is driven to rotate by the driving motor (3) is connected to the lower end of the rotary machine head (2), and a transition cylinder (5) is connected to the upper end of the rotary machine head (2), the rotary evaporator is characterized in that a communicating bottle (6) is detachably communicated to the upper end of the transition cylinder (5), a rotary bottle (7) is communicated to the lower end of the connecting cylinder (4), and a detachable installation structure is arranged between the connecting cylinder (4) and the rotary bottle (7) to realize detachable connection of the rotary bottle (7);

the automatic feeding device is characterized in that a feeding funnel (8) is communicated with the upper end of the communicating bottle (6), a feeding valve (9) is arranged on the feeding funnel (8), a liquid injection pipe (10) extending into the rotating bottle (7) is axially communicated with the inside of the feeding funnel (8) along a connecting cylinder (4), a main condenser (11) vertically arranged on the frame body (1) is communicated with the rear end of the communicating bottle (6), an auxiliary condenser (12) is communicated with the upper end of the main condenser (11), an air extraction flange (13) is communicated with the upper end of the auxiliary condenser (12), the air extraction flange (13) is communicated with a vacuum air pump system, the vacuum air pump system is satisfied to carry out vacuum air extraction on the rotating bottle (7), a recovery bottle (14) is communicated with the lower end of the auxiliary condenser (12), a discharge port (15) is connected with a discharge valve (16), and two groups of air inlet and discharge valves (17) are respectively communicated with the upper end of the recovery bottle (14).

The detachable mounting structure comprises an annular groove body (18) which is arranged on the inner side wall of the lower end of the connecting cylinder (4), the inner diameter of the annular groove body (18) is matched with the outer diameter of the bottle mouth of the rotary bottle (7), a plurality of groups of containing grooves (19) are uniformly distributed on the inner side wall of the lower end of the connecting cylinder (4) along the circumferential direction, strip holes (20) which are obliquely arranged are arranged on the two inner side walls of the containing grooves (19), clamping blocks (21) are in sliding fit between the two groups of strip holes (20) in the same containing groove (19), one side of the clamping blocks (21) facing the axis of the connecting cylinder (4) is of an inclined surface structure with wide top and narrow bottom, the clamping block (21) is internally connected with the driving rod (22) in a sliding manner along the radial direction of the connecting cylinder (4), the accommodating groove (19) is internally connected with a limit post (23) which is in sliding penetration with the driving rod (22) in an axial direction, the driving rod (22) can only axially move along the connecting cylinder (4) relative to the limit post (23), the clamping block also comprises a driving knob (24) which is in threaded fit with the outside of the connecting cylinder (4), the inner side wall of the driving knob (24) is circumferentially provided with a guide groove (25) with a T-shaped section, the end part of the limit post (23) is connected with a T-shaped slide block (26) which is in sliding fit with the guide groove (25), the T-shaped slide block (26) can only circumferentially move along the direction of the guide groove (25), the driving knob (24) is externally connected with a thread locking device, so that the thread locking device can prevent the driving knob (24) from loosening in threaded fit with the outside of the connecting cylinder (4);

the automatic control device is characterized in that a hot bath device arranged below the rotary bottle (7) is arranged at the lower end of the frame body (1), a self-adjusting system is arranged in the hot bath device, the self-adjusting system in the hot bath device is used for adaptively adjusting the position of the rotary bottle (7), and the hot bath device, the vacuum air pump system and the driving motor (3) are electrically connected with a controller arranged on the frame body (1);

the hot bath device comprises a fixed seat (31) connected to the lower end of a frame body (1), the upper end of the fixed seat (31) is longitudinally and slidably connected with a first support (32), a first electric telescopic rod (33) (29) arranged on the fixed seat (31) is connected between the first support (32) and the fixed seat (31), the upper end of the first support (32) is transversely and slidably connected with a second support (34), a second electric telescopic rod (35) (29) arranged on the first support (32) is connected between the second support (34) and the first support (32), a third support (36) is vertically and slidably connected to the upper end of the second support (34), a lifting motor is connected between the third support (36) and the second support (34), and the lifting motor drives the third support (36) to vertically and relatively move relative to the second support (34);

the electric heating device is characterized in that a hot bath pot (38) is arranged in the third support (36), an electric heating wire and a temperature sensor are arranged in the hot bath pot (38), rectangular grooves (39) are formed in the peripheral side walls of the third support (36), a rotating plate (40) is connected in the rectangular grooves (39), a cylinder (41) is connected to one side surface of the rotating plate (40) facing the pot body, a telescopic column (42) is matched in the cylinder (41) in a sliding manner, a piezoelectric sensor is connected to the inner bottom surface of the cylinder (41), a second spring (43) is connected between the telescopic column (42) and the piezoelectric sensor of the inner bottom surface of the cylinder (41), and a judging circuit is connected between the four groups of piezoelectric sensors and controls the first electric telescopic rods (33) (29), the second electric telescopic rods (35) (29) and the lifting motor to work through a controller;

the two adjacent rotating plates (40) are meshed through bevel gears (44) connected with the end parts, one ends of the rotating shafts of the two rotating plates (40) are coaxially connected with an output shaft of a self-locking motor (45) arranged on a third support (36), and the first electric telescopic rods (33) (29), the second electric telescopic rods (35) (29), the lifting motor, the electric heating wire, the temperature sensor, the judging circuit and the self-locking motor (45) are electrically connected with the controller.

2. The rotary evaporator according to claim 1, wherein the thread locking device comprises a drive nut (27) which is in threaded connection with the outside of the connecting cylinder (4) and is arranged above the drive knob (24), the thread rotation direction between the drive nut (27) and the connecting cylinder (4) is opposite to the thread rotation direction between the drive knob (24) and the connecting cylinder (4), a plurality of groups of axially arranged fixed cylinders (28) are uniformly distributed on one side surface of the drive nut (27) facing the drive knob (24), a plurality of groups of telescopic rods (29) which are axially and slidably matched in the fixed cylinders (28) are uniformly distributed on one side surface of the drive knob (24) facing the drive nut (27), and a plurality of groups of first springs (30) sleeved outside the corresponding fixed cylinders (28) are connected between the drive knob (24) and the drive nut (27).

3. The rotary evaporator according to claim 1, wherein the inner side surface of the upper end of the transition cylinder (5) is provided with an inner groove body (46), the inner groove body (46) is matched with the bottle mouth of the communicating bottle (6), the rotary evaporator further comprises two groups of semi-circular rubber rings (47) which are matched with each other for use, and the rotary evaporator further comprises a connecting knob (48) which is screwed outside the transition cylinder (5) and matched with the rubber rings (47).

4. Rotary evaporator according to claim 1, characterized in that the inner bottom surface of the annular groove (18) is connected with a rubber ring (49).

5. The rotary evaporator according to claim 1, wherein the vacuum air pump system comprises an air pipe connected with the air extraction flange (13), a vacuum gauge (50) is arranged on the air pipe, the other end of the air pipe is connected with an air pump, and the air pump and the vacuum gauge (50) are electrically connected with the controller.

6. Rotary evaporator according to claim 1, characterized in that the connection between the main condenser (11) and the auxiliary condenser (12), between the auxiliary condenser (12) and the suction flange (13), between the main condenser (11) and the collecting bottle, between the connecting bottle and the main condenser (11) is made by means of connection means, the connection means comprise semicircular arc rods (51) which are matched with the convex edges of the ends of the corresponding tubes, the arc rods (51) are hinged to form a circular arc rod body structure, the other ends of the arc rods (51) are provided with U-shaped grooves (52), the two groups of U-shaped grooves (52) are matched, the arc rods (51) are connected with a plurality of groups of threaded holes (53), the matched circular arc rod body structures are connected by bolts (54) which are connected in the threaded holes (53) through threads, and the U-shaped grooves (52) are connected by means of detachable bolts (54).

7. Rotary evaporator according to claim 1, characterized in that the main condenser (11) and the auxiliary condenser (12) are provided with a cooling liquid inlet (55) and a cooling liquid outlet (56), respectively.

8. Rotary evaporator according to claim 1, characterized in that the frame body (1) is provided with a main condenser fixing frame (57) for fixedly mounting the main condenser (11), the frame body (1) is provided with an auxiliary condenser fixing frame (58) for fixedly mounting the auxiliary condenser (12), and the frame body (1) is provided with a collecting bottle fixing frame (59) for fixedly mounting the collecting bottle.