CN212631749U

CN212631749U - A high stability rotary evaporator for surfactant production

Info

Publication number: CN212631749U
Application number: CN202020513715.8U
Authority: CN
Inventors: 陈勇; 庄晓晓
Original assignee: Suzhou Kangchun Pharmaceutical Technology Co ltd
Current assignee: Suzhou Kangchun Pharmaceutical Technology Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-03-02
Anticipated expiration: 2030-04-10

Abstract

A high-stability rotary evaporator for surfactant production comprises a rotary bottle, a rotary evaporation host, a heating bath, a condenser, a four-way pipe, a collecting bottle, a feeding device, a water ring vacuum pump, a lifting frame and an anti-suck-back device; a rotary steaming main machine is installed on the rotary bottle, the rotary bottle rotates through the rotary steaming main machine, a heating bath kettle is arranged below the rotary bottle, and the rotary bottle is placed in the heating bath kettle for constant-temperature heating; the condenser, the rotary steaming host and the collecting bottle are respectively arranged on the lifting frame from top to bottom through a first support, a second support and a third support; the top and the bottom of the condenser are respectively provided with an upper port and a lower port. A high stability rotary evaporator for surfactant production, simple structure, stability is good, convenient operation can distill the sample fast, mildly, effectively prevents the pollution of vacuum pump suck-back rotary evaporator, has improved rotary evaporator's security and usability in the use greatly.

Description

A high stability rotary evaporator for surfactant production

Technical Field

The utility model relates to a rotatory evaporimeter technical field, concretely relates to high stability rotatory evaporimeter for surfactant production.

Background

Surfactant (surfactant) refers to a substance which has fixed hydrophilic and lipophilic groups, can be aligned on the surface of a solution, and can significantly reduce the surface tension. It is a large class of organic compounds, and the properties of the compounds are very characteristic, and the compounds are very flexible and wide in application and have great practical value and theoretical significance.

The rotary evaporator is one of the important devices for producing the surfactant. The rotary evaporator is composed of a motor, a distillation flask, a heating pot, a condenser pipe and the like, is mainly used for continuously distilling volatile solvents under the reduced pressure condition, and is applied to the fields of chemistry, chemical engineering, biological medicine and the like. The principle of the rotary evaporator is reduced pressure distillation, namely under the condition of reduced pressure, when a solvent is distilled, a distillation flask continuously rotates, so that a layer of liquid film is attached to the wall of the distillation flask all the time, the evaporation area is increased, and the evaporation rate is accelerated. At present, the internal vacuum of the rotary evaporator is realized by a mode of pumping air to the rotary evaporator through a circulating water pump, and an exhaust pipe with a three-way piston is arranged at the top end of a condensation pipe and is directly connected with an air pumping opening of the water pump. Although the connection method is relatively simple, the connection method has serious potential safety hazard, namely once the water pump stops working carelessly in the vacuumizing process (which may be shut down due to power failure, mechanical failure or manual operation error), sewage in the water pump is quickly sucked into the evaporator due to vacuum in the rotary evaporator, and products are polluted.

With the continuous development of science, people have higher and higher requirements on the stability and the safety of the rotary evaporator. Therefore, it is necessary to develop a high-stability rotary evaporator for surfactant production, which has a simple structure, good stability, and convenient operation, and can rapidly and gently distill a sample, thereby solving the above problems.

Chinese patent application No. CN201320456455.5 discloses a rotary evaporator, which is characterized in that a safety bottle is further disposed between the vacuum pump and the rotary evaporator to solve the pollution of back suction to the rotary evaporator, without the function of precisely controlling the vacuum degree, and without improving the stability and operability of the rotary evaporator.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome not enough above, the utility model aims at providing a high stability rotary evaporator for surfactant production, simple structure, stability is good, convenient dismantlement, change, convenient operation can be fast, gently distill the sample, effectively prevents the pollution of vacuum pump suck-back rotation rotary evaporator, has improved the security and the usability of rotary evaporator in the use greatly, and application prospect is extensive.

The technical scheme is as follows: a high-stability rotary evaporator for surfactant production comprises a rotary bottle, a rotary evaporation host, a heating bath, a condenser, a four-way pipe, a collecting bottle, a feeding device, a water ring vacuum pump, a lifting frame and an anti-suck-back device; a rotary steaming main machine is installed on the rotary bottle, the rotary bottle rotates through the rotary steaming main machine, a heating bath kettle is arranged below the rotary bottle, and the rotary bottle is placed in the heating bath kettle for constant-temperature heating; the condenser, the rotary steaming host and the collecting bottle are respectively arranged on the lifting rack from top to bottom through a first support, a second support and a third support; the top and the bottom of the condenser are respectively provided with an upper port and a lower port, and the upper, the lower, the left and the right sides of the four-way pipe are respectively provided with an upper connector, a lower connector, a left material port and a right connector; the upper port and the lower port of the condenser are respectively provided with a vacuumizing joint and a lower joint, the upper port of the condenser is sequentially connected with an anti-suck-back device and a water ring vacuum pump through the vacuumizing joint, and the lower port is communicated with the upper interface of the four-way pipe through the lower joint; the lower connector of the four-way pipe is communicated with the collecting bottle, and the left material port and the right connector of the four-way pipe are respectively connected with the feeding device and the upper part of the rotary bottle.

High stability rotatory evaporimeter, simple structure, stability is good, the security is high. The rotary bottle is filled with reaction liquid, and rotates at a constant speed under the control of the rotary steaming main machine, so that the evaporation area is increased, the rotary bottle is rotated and simultaneously placed in the heating bath kettle for constant-temperature heating, wherein the rotary bottle is basically fixed, and the contact area of the rotary bottle and a heating medium in the heating bath kettle is adjusted by the lifting rack for the condenser, the rotary steaming main machine and the collecting bottle. The rotary bottle is in a negative pressure state through a water ring vacuum pump, and the reaction liquid in the rotary bottle is heated, diffused and evaporated under the negative pressure. In addition, under the action of the condenser, the hot vapor can be rapidly liquefied, the evaporation rate is accelerated, and finally, the evaporated solvent enters the collecting bottle after being cooled. In addition, for the convenience of operation, the reaction liquid is sucked into the rotary bottle through the feeding device.

In the use, the phenomenon of the cooling water suck-back to the rotary evaporator in the vacuum pump often can appear, can pollute the reaction feed liquid in the rotatory bottle when serious, if the temperature of reaction feed liquid is higher, meets microthermal water and can gasify rapidly, the danger of probably exploding threatens operating personnel's personal safety seriously. Therefore, an anti-suck-back device is arranged between the condenser and the water ring vacuum pump.

Further, according to the high-stability rotary evaporator for surfactant production, the condenser comprises an outer pipe and an inner core pipe from outside to inside, the left side and the right side of the upper part of the condenser are respectively provided with a water inlet joint and a water outlet joint, the water inlet joint and the water outlet joint are respectively connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe, the water inlet joint, the inner core pipe, the water outlet joint and the water outlet pipe are sequentially communicated; the upper port, the outer pipe and the lower port of the condenser are communicated in sequence.

Furthermore, in the high-stability rotary evaporator for surfactant production, the inner core tube of the condenser is a spiral water-cooling tube formed by tightly spirally interweaving two glass tubes.

The inner core pipe is a spiral water-cooling pipe formed by tightly spirally interweaving two glass pipes, the length of the inner core pipe is increased, the cooling area is enlarged, steam passes through the outer surface of the inner core pipe, and is cooled by water and natural air, and the cooling effect is better.

Further, the heating bath kettle is provided with a dust cover.

Heating bath's heating medium can be selected at clear water, silicon oil, high temperature silicon oil kind according to actual need, heating bath on install the shield, lift the shield during the use, cover the shield when not using, can prevent that the dust from getting into in the heating bath, keep the cleanness of heating bath.

Further, foretell a high stability rotary evaporator for surfactant production, feed arrangement includes peristaltic pump, inlet pipe one end is connected with the peristaltic pump and the other end stretches into to the rotatory bottle in through the four-way pipe.

Further, above-mentioned a high stability rotary evaporator for surfactant production, install the charge-in valve on the inlet pipe.

Furthermore, foretell a high stability rotary evaporator for surfactant production, prevent that suction device includes buchner flask one, buchner flask two, the evacuation connects through pipeline one and buchner flask one and is connected, buchner flask two is connected with water ring vacuum pump through pipeline two.

And a check valve and a vacuum regulating valve are arranged on the first pipeline.

And after the reaction materials of the high-stability rotary evaporator and the preparation are finished, starting the water ring vacuum pump, and enabling the high-stability rotary evaporator to reach a vacuum state after sequentially passing through the second filter flask, the first filter flask, the vacuum regulating valve and the check valve through the second pipeline and the third pipeline. At this time, the degree of tightness was adjusted by opening the vacuum adjusting valve to make the vacuum reach the target degree of vacuum. Meanwhile, during vacuum pumping, volatile substances in the reaction system are purified through the first suction filter bottle and the second suction filter bottle, so that corrosion damage to the water ring vacuum pump is reduced.

The vacuum regulating valve is provided with a fine regulating valve and a coarse regulating valve, the coarse regulating valve can roughly regulate the vacuum degree, a vacuum system can be quickly opened or closed, and the fine regulating valve can regulate the vacuum degree more accurately to meet different experimental requirements. The vacuum regulating valve is matched with two regulating valves, so that the vacuum degree and the switch can be conveniently and quickly controlled.

Furthermore, according to the high-stability rotary evaporator for surfactant production, the first filter flask and the second filter flask are subjected to suction filtration through the upper nozzle and the lower nozzle, water is filled in the first filter flask, and the bottom of the first filter flask is higher than the water surface of the second filter flask.

The utility model has the advantages that:

(1) the high-stability rotary evaporator for producing the surfactant has the advantages of simple structure, good stability, convenient disassembly and replacement and convenient operation, and can quickly and mildly distill a sample;

(2) the high-stability rotary evaporator for producing the surfactant effectively prevents the vacuum pump from sucking back to pollute the rotary evaporator, and greatly improves the safety and usability of the rotary evaporator in the using process; the tightness is adjusted by opening the vacuum adjusting valve, so that the vacuum reaches the target vacuum degree. Meanwhile, during vacuum pumping, volatile substances in the reaction system are purified through the first suction filter bottle and the second suction filter bottle, so that corrosion damage to the water ring vacuum pump is reduced;

(3) the high-stability rotary evaporator for producing the surfactant has the advantages that the inner core pipe of the condenser is the spiral water-cooling pipe formed by tightly spirally interweaving two glass pipes, so that the cooling effect is better; reaction liquid is sucked into the rotary bottle through the feeding device, so that the operation is more convenient, and the application prospect is wide.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a high-stability rotary evaporator for surfactant production according to the present invention;

FIG. 2 is a schematic structural view of a heating bath of the high-stability rotary evaporator for surfactant production according to the present invention;

in the figure: the device comprises a rotary bottle 1, a rotary steaming main machine 2, a heating bath kettle 3, a dust cover 31, a condenser 4, an upper port 41, a lower port 42, a vacuumizing joint 43, a lower joint 44, an outer pipe 45, an inner core pipe 46, a water inlet joint 47, a water outlet joint 48, a four-way pipe 5, an upper joint 51, a lower joint 52, a left material port 53, a right joint 54, a collecting bottle 6, a feeding device 7, a peristaltic pump 71, a feeding pipe 72, a feeding valve 73, a water ring vacuum pump 8, a lifting frame 9, a first support 91, a second support 92, a third support 93, an anti-suck-back device 10, a first filter bottle 101, a second filter bottle 102, a first pipeline 104, a second pipeline 105, a check valve 106 and a vacuum regulating valve 107.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1-2 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The high-stability rotary evaporator for surfactant production with the structure shown in fig. 1 comprises a rotary bottle 1, a rotary evaporation host machine 2, a heating bath 3, a condenser 4, a four-way pipe 5, a collecting bottle 6, a feeding device 7, a water ring vacuum pump 8, a lifting frame 9 and an anti-suck-back device 10; a rotary steaming main machine 2 is arranged on the rotary bottle 1, the rotary bottle 1 rotates through the rotary steaming main machine 2, a heating bath pot 3 is arranged below the rotary bottle 1, and the rotary bottle 1 is placed in the heating bath pot 3 for constant-temperature heating; the condenser 4, the rotary steaming main machine 2 and the collecting bottle 6 are respectively arranged on the lifting frame 9 from top to bottom through a first support 91, a second support 92 and a third support 93; the top and the bottom of the condenser 4 are respectively provided with an upper port 41 and a lower port 42, and the upper, the lower, the left and the right sides of the four-way pipe 5 are respectively provided with an upper connector 51, a lower connector 52, a left material opening 53 and a right connector 54; an upper port 41 and a lower port 42 of the condenser 4 are respectively provided with a vacuumizing joint 43 and a lower joint 44, the upper port 41 of the condenser 4 is sequentially connected with the anti-suck-back device 10 and the water ring vacuum pump 8 through the vacuumizing joint 43, and the lower port 42 is communicated with an upper joint 51 of the four-way pipe 5 through the lower joint 44; the lower port 52 of the four-way pipe 5 is communicated with the collecting bottle 6, and the left material port 53 and the right port 54 of the four-way pipe 5 are respectively connected with the feeding device 7 and the upper part of the rotary bottle 1.

In addition, the condenser 4 comprises an outer pipe 45 and an inner core pipe 46 from outside to inside, the left side and the right side of the upper part of the condenser 4 are respectively provided with a water inlet joint 47 and a water outlet joint 48, the water inlet joint 47 and the water outlet joint 48 are respectively connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe, the water inlet joint 47, the inner core pipe 46, the water outlet joint 48 and the water outlet pipe are sequentially communicated; the upper port 41, the outer pipe 45 and the lower port 42 of the condenser 4 are communicated in sequence.

Further, the inner core tube 46 of the condenser 4 is a water-cooling tube formed by tightly spirally interweaving two glass tubes.

Further, as shown in fig. 2, a dust cover 31 is mounted on the heating bath 3.

Further, feed arrangement 7 includes peristaltic pump 71, inlet pipe 72 one end is connected with peristaltic pump 71 and the other end stretches into to in the rotatory bottle 1 through four-way pipe 5. The feed pipe 72 is provided with a feed valve 73.

Further, the suck-back prevention device 10 comprises a first filter bottle 101 and a second filter bottle 102, the vacuum connector 43 is connected with the first filter bottle 101 through a first pipe 104, and the second filter bottle 102 is connected with the water ring vacuum pump 8 through a second pipe 105.

Further, a check valve 106 and a vacuum regulating valve 107 are arranged on the first pipe 104.

Furthermore, the first filter flask 101 and the second filter flask 102 are subjected to suction filtration through an upper nozzle and a lower nozzle, water is filled in the first filter flask 101, and the bottom of the first filter flask 101 is higher than the water surface of the second filter flask 102.

Examples

Based on the above structural basis, as shown in fig. 1 and 2.

A high stability rotary evaporator for surfactant production, simple structure, stability is good, the security is high. The rotating bottle 1 is filled with reaction liquid, and is controlled by the rotary steaming main machine 2 to rotate at a constant speed, so that the evaporation area is increased, the rotating bottle 1 is rotated and simultaneously placed in the heating bath kettle 3 for constant-temperature heating, wherein the rotating bottle 1 is basically fixed, and the contact area of a heating medium in the rotating bottle 1 and the heating bath kettle 3 is adjusted by the lifting frame 9 for the condenser 4, the rotary steaming main machine 2 and the collecting bottle 6. The rotary bottle 1 is in a negative pressure state through a water ring vacuum pump 8, and the reaction liquid in the rotary bottle 1 is heated, diffused and evaporated under the negative pressure.

In addition, under the action of the condenser 4, the hot vapor can be rapidly liquefied, the evaporation rate is accelerated, and finally, the evaporated solvent enters the collecting bottle 6 after being cooled. In addition, for the convenience of operation, the reaction solution is sucked into the rotary bottle 1 through the peristaltic pump 71 and the feed pipe 72 of the feeding device 7 and controlled by the feed valve 73.

In the use, the phenomenon of the cooling water suck-back to the rotary evaporator in the vacuum pump often can appear, can pollute the reaction feed liquid in the rotatory bottle 1 when serious, if the temperature of reaction feed liquid is higher, meets microthermal water and can gasify rapidly, the danger of explosion probably threatens operating personnel's personal safety seriously. Therefore, a suck back prevention device 10 is installed between the condenser 4 and the water ring vacuum pump 8.

After the reaction materials and preparation of the high-stability rotary evaporator are finished, the water ring vacuum pump 8 is started, and the high-stability rotary evaporator is enabled to reach a vacuum state through a second pipeline 105 and a first pipeline 104 and sequentially through a second filter flask 102, a first filter flask 101, a vacuum regulating valve 107 and a check valve 106. At this time, the vacuum control valve 107 is opened to adjust the degree of tightness so that the vacuum reaches the target degree of vacuum. Meanwhile, during vacuum pumping, volatile substances in the reaction system are purified through the first filter flask 101 and the second filter flask 102, so that corrosion damage to the water ring vacuum pump 8 is reduced.

The vacuum regulating valve 107 is provided with a fine adjustment valve and a coarse adjustment valve, the coarse adjustment valve can roughly adjust the vacuum degree, the vacuum system can be quickly opened or closed, and the fine adjustment valve can more accurately adjust the vacuum degree so as to meet different experimental requirements. The vacuum regulating valve 107 is matched with two regulating valves, so that the vacuum degree and the opening and closing can be conveniently and quickly controlled.

Further, the heating medium of heating bath 3 can be selected according to actual need at clear water, silicon oil, high temperature silicon oil kind, heating bath 3 on install shield 31, lift shield 31 during the use, cover shield 31 when not using, can prevent that the dust from getting into in the heating bath, keep heating bath's cleanness.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, the embodiments of the present invention can be arbitrarily combined with each other, and the same shall be regarded as the disclosure of the present invention as long as the idea of the present invention is not violated.

Claims

1. A high-stability rotary evaporator for surfactant production is characterized by comprising a rotary bottle (1), a rotary evaporation host (2), a heating bath (3), a condenser (4), a four-way pipe (5), a collecting bottle (6), a feeding device (7), a water ring vacuum pump (8), a lifting frame (9) and an anti-suck-back device (10); the rotary steaming main machine (2) is installed on the rotary bottle (1), the rotary bottle (1) rotates through the rotary steaming main machine (2), the heating bath pot (3) is arranged below the rotary bottle (1), and the rotary bottle (1) is placed in the heating bath pot (3) for constant-temperature heating; the condenser (4), the rotary steaming main machine (2) and the collecting bottle (6) are respectively arranged on the lifting rack (9) from top to bottom through a first support (91), a second support (92) and a third support (93); the top and the bottom of the condenser (4) are respectively provided with an upper port (41) and a lower port (42), and the upper, the lower, the left and the right sides of the four-way pipe (5) are respectively provided with an upper connector (51), a lower connector (52), a left material port (53) and a right connector (54); an upper port (41) and a lower port (42) of the condenser (4) are respectively provided with a vacuum-pumping joint (43) and a lower joint (44), the upper port (41) of the condenser (4) is sequentially connected with an anti-suck-back device (10) and a water ring vacuum pump (8) through the vacuum-pumping joint (43), and the lower port (42) is communicated with an upper joint (51) of a four-way pipe (5) through the lower joint (44); the lower connector (52) of the four-way pipe (5) is communicated with the collecting bottle (6), and the left material port (53) and the right connector (54) of the four-way pipe (5) are respectively connected with the feeding device (7) and the upper part of the rotary bottle (1).

2. The high-stability rotary evaporator for surfactant production according to claim 1, wherein the condenser (4) comprises an outer pipe (45) and an inner core pipe (46) from outside to inside, the left side and the right side of the upper part of the condenser (4) are respectively provided with a water inlet joint (47) and a water outlet joint (48), the water inlet joint (47) and the water outlet joint (48) are respectively connected with a water inlet pipe and a water outlet pipe, and the water inlet pipe, the water inlet joint (47), the inner core pipe (46), the water outlet joint (48) and the water outlet pipe are sequentially communicated; the upper port (41), the outer pipe (45) and the lower port (42) of the condenser (4) are communicated in sequence.

3. The rotary evaporator for surfactant production according to claim 2, wherein the inner core tube (46) of the condenser (4) is a water-cooled tube formed by tightly winding and interlacing two glass tubes into a spiral shape.

4. The rotary evaporator for surfactant production according to claim 1, characterized in that a dust cover (31) is installed on the heating bath (3).

5. The rotary evaporator for producing the surfactant as claimed in claim 1, wherein the feeding device (7) comprises a peristaltic pump (71) and a feeding pipe (72), one end of the feeding pipe (72) is connected with the peristaltic pump (71) and the other end of the feeding pipe extends into the rotary bottle (1) through a four-way pipe (5).

6. The rotary evaporator for surfactant production according to claim 5, characterized in that the feed pipe (72) is equipped with a feed valve (73).

7. The rotary evaporator for surfactant production as claimed in claim 1, wherein said suck-back prevention device (10) comprises a first filter flask (101) and a second filter flask (102), said vacuum connector (43) is connected with said first filter flask (101) through a first pipe (104), and said second filter flask (102) is connected with said water ring vacuum pump (8) through a second pipe (105).

8. The rotary evaporator for surfactant production according to claim 7, characterized in that the first pipe (104) is provided with a check valve (106) and a vacuum regulating valve (107).

9. The rotary evaporator for producing the surfactant as claimed in claim 7, wherein the first filter flask (101) and the second filter flask (102) are suction-filtered by upper and lower nozzles, the first filter flask (101) is filled with water, and the bottom of the first filter flask (101) is higher than the water level of the second filter flask (102).