Vacuum rotary evaporation device capable of automatically removing water

Abstract

The utility model belongs to the technical field of rotary evaporation devices, and particularly relates to an automatic dewatering vacuum rotary evaporation device, which solves the problems of low rotary evaporation efficiency and incapability of observing internal conditions at any time in the prior art, and comprises a motor, a protective shell, a device shell, a water tank and a water pump, the output end of the motor is connected with a driving gear which is coaxially arranged through a coupler, a transmission shaft is rotationally installed in the protection shell, the transmission shaft is fixedly connected with a driven gear, a first driven wheel and a second driven wheel through screws, and the outer surface of the second driven wheel is fixedly sleeved with a third driven wheel through a belt. Through the arrangement of the heating cavity, the water tank and other structures, the heating cavity is arranged in the device shell, water in the water tank is pumped by the water pump to enter the heating cavity through the water inlet and then flows into the water tank from the water outlet, heat conduction is easy, the interior of the device shell is better heated, and the effect that the rotary evaporation efficiency is higher is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary evaporation devices, in particular to an automatic water-removing vacuum rotary evaporation device. Background Art

[0002] At present, the rotary evaporator is an evaporation instrument widely used in laboratories. It is suitable for reflux operations, rapid evaporation of large amounts of solvents, concentration of trace components, and reaction processes that require stirring. The rotary evaporator system can be sealed and decompressed to 400-600 mmHg, and the solvent in the distillation flask is heated with a heating bath. The heating temperature can be close to the boiling point of the solvent. It can also rotate at a speed of 50-160 rpm to form a thin film of the solvent, thereby increasing the evaporation area.

[0003] The authorization announcement in the prior art is: CN217187909U, an automatic water removal vacuum rotary evaporation device, including a rotary evaporation chamber, a water bath chamber, a vacuum pump, a condenser, a collector and a constant temperature water tank, the rotary evaporation chamber is fixedly installed inside the water bath chamber, a motor is fixedly installed on the top of the outside of the rotary evaporation chamber, the output end of the motor extends into the inside of the rotary evaporation chamber and is fixedly connected with a stirring device, an air guide pipe, a feeding pipe and an air extraction pipe are provided on the top of the outside of the rotary evaporation chamber, the air guide pipe runs through the condenser and is connected to the collector, the air extraction pipe is connected to the vacuum pump, an air outlet pipe and an air inlet pipe are connected between the condenser and the condenser, a water inlet pipe and a water outlet pipe are connected between the water bath chamber and the constant temperature water tank, and a water pump is provided on the water inlet pipe. However, during use of the utility model, the water bath chamber is located outside the device housing, so that the heat of the heat-conducting medium is easily dissipated to a greater extent, resulting in insufficient internal heat of the device and a problem of low rotary evaporation efficiency. Further, because no window for observing the interior is provided, the problem of not being able to observe the internal conditions at any time exists. Utility Model Content

[0004] The utility model aims to provide an automatic water removal vacuum rotary evaporation device, which solves the problems in the prior art that the rotary evaporation efficiency is low and the internal conditions cannot be observed at any time.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic water removal vacuum rotary evaporation device, comprising a motor, a protective shell, a device shell, a water tank and a water pump, wherein the output end of the motor is connected to a coaxially arranged driving gear through a coupling, a transmission shaft is rotatably installed inside the protective shell, a driven gear, a first driven wheel and a second driven wheel are respectively fixedly connected to the transmission shaft by screws, a stirring device is rotatably installed inside the device shell, and a third driven wheel is fixedly connected to the top of the stirring device by screws;

[0006] A heating chamber is provided inside the device shell, and a placing platform, two symmetrically arranged shell support frames and two symmetrically arranged pump body support frames are fixedly connected to the device shell by screws, and a vacuum pump is installed on the two pump body support frames. A discharge port is fixedly connected to the bottom of the device shell by screws, a water inlet pipe, a water outlet pipe and an air exhaust pipe are fixedly connected to the device shell by screws, and the air exhaust pipe is fixedly connected to the vacuum pump by screws, and a feeding port and an air outlet pipe are fixedly connected to the top of the device shell by screws, respectively. A condenser is installed on the top of the placing platform, and a collector is fixedly connected to the placing platform by screws, one side of the condenser is fixedly connected to the condensation box by screws, and the other end of the air outlet pipe is fixedly connected to the collector by screws, a brake shaft is installed on the internal thread of the device shell, and one end of the brake shaft is fixedly connected to a valve by screws.

[0007] Preferably, a visual window is installed on the device housing.

[0008] Preferably, a threaded hole is opened inside the housing of the device, and the brake shaft is threadedly connected inside the threaded hole, so that the brake shaft can rotate conveniently in the threaded hole.

[0009] Preferably, a belt is sleeved on the outer surfaces of the second driven wheel and the third driven wheel, and the belt facilitates power transmission at each connecting part.

[0010] Preferably, a vertical hole is opened inside the condensation box, and the air outlet pipe passes through the inside of the vertical hole, so that the condensation box can condense part of the air outlet pipe.

[0011] Preferably, the driving gear and the driven gear are meshed with each other, so that the driving wheel can drive the driven gear to rotate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model places the heating chamber inside the device shell by setting up structures such as a heating chamber and a water tank. The water in the water tank is pumped by a water pump into the heating chamber through the water inlet, and then flows into the water tank from the water outlet, which is easy to conduct heat and better heat the inside of the device shell, achieving a higher rotary evaporation efficiency.

[0014] 2. The utility model arranges the structure of the device shell and the visual window, and places the visual window on the outside of the device shell. The staff can observe the inside of the device shell through the visual window, which is convenient for adding and discharging materials or maintenance work, and it is easier to grasp the work progress at any time, thus realizing the effect of observing the inside of the device shell at any time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the front view of the utility model;

[0016] Figure 2 It is an enlarged view of structure A of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall structure of the utility model.

[0018] In the figure: 1. motor; 2. driving gear; 3. transmission shaft; 4. protective shell; 5. first driven wheel; 6. second driven wheel; 7. vacuum pump; 8. exhaust pipe; 9. third driven wheel; 10. stirring device; 11. pump body support frame; 12. water pump; 13. water inlet pipe; 14. water outlet pipe; 15. brake shaft; 16. valve; 17. shell support frame; 18. heating chamber; 19. discharge port; 20. water tank; 21. feeding port; 22. air outlet pipe; 23. placement platform; 24. condenser; 25. condensation box; 26. collector; 27. device shell; 28. driven gear; 29. ​​visual window. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3, an automatic water removal vacuum rotary evaporation device, comprising a motor 1, a protective shell 4, a device shell 27, a water tank 20 and a water pump 12, characterized in that: the output end of the motor 1 is connected to a coaxially arranged driving gear 2 through a coupling, a transmission shaft 3 is rotatably installed inside the protective shell 4, and a driven gear 28, a first driven wheel 5 and a second driven wheel 6 are respectively fixedly connected to the transmission shaft 3 by screws, a stirring device 10 is rotatably installed inside the device shell 27, and a third driven wheel 9 is fixedly connected to the top of the stirring device 10 by screws, a heating chamber 18 is arranged inside the device shell 27, a placing platform 23, two symmetrically arranged shell support frames 17 and two symmetrically arranged pump body support frames 11 are respectively fixedly connected to the device shell 27 by screws, a vacuum pump 7 is installed on the two pump body support frames 11, a discharge port 19 is fixedly connected to the bottom of the device shell 27 by screws, The water inlet pipe 13, the water outlet pipe 14 and the exhaust pipe 8, the exhaust pipe 8 is fixedly connected to the vacuum pump 7 by screws, the top of the device shell 27 is respectively fixedly connected with the feeding port 21 and the exhaust pipe 22 by screws, the top of the placement platform 23 is installed with a condenser 24, the placement platform 23 is fixedly connected with a collector 26 by screws, one side of the condenser 24 is fixedly connected to the condensation box 25 by screws, the other end of the exhaust pipe 22 is fixedly connected to the collector 26 by screws, the internal thread of the device shell 27 is installed with a brake shaft 15, one end of the brake shaft 15 is fixedly connected with a valve 16 by screws, through the arrangement of the heating chamber 18 and the water tank 20 and other structures, the heating chamber 18 is placed inside the device shell 27, the water in the water tank 20 is pumped by the water pump 12 into the heating chamber 18 through the water inlet, and then flows into the water tank 20 from the water outlet, which is easy to carry out heat conduction, better heating the inside of the device shell 27, and achieves a higher rotary evaporation efficiency.

[0021] See also Figure 1-3 A visual window 29 is fixedly connected to the device shell 27 by screws. Through the arrangement of the device shell 27 and the visual window 29 and other structures, the visual window 29 is placed outside the device shell 27. The staff can observe the inside of the device shell 27 through the visual window 29, which is convenient for adding and discharging materials or maintenance work, and it is easier to grasp the work progress at any time, thereby achieving the effect of observing the inside of the device shell 27 at any time.

[0022] See also Figure 1-3 A threaded hole is provided inside the device housing 27, and the brake shaft 15 is threadedly connected inside the circular hole.

[0023] See also Figure 1-3 A belt is provided on the outer surface of the second driven wheel 6 and the outer surface of the third driven wheel 9.

[0024] See also Figure 1-3A vertical hole is opened inside the condensation box 25, and the air outlet pipe 22 passes through the inside of the vertical hole.

[0025] See also Figure 2 , the driving gear 2 and the driven gear 28 are meshed.

[0026] The specific implementation process of the utility model is as follows: the staff adds the solution to be rotary evaporated into the device through the feeding port 21, first starts the vacuum pump 7, and the vacuum pump 7 evacuates the inside of the device shell 27 through the exhaust pipe 8, and then starts the motor 1, the motor 1 drives the driving gear 2 to rotate, the driving gear 2 meshes with the driven gear 28, the driven gear 28 rotates to drive the transmission shaft 3 to rotate, the driven wheel drives the water pump 12 to start working, the water pump 12 extracts the heat transfer medium from the water tank 20, flows into the heating chamber 18 through the water inlet, and flows into the water tank 20 again from the water outlet pipe 14, the driven wheel also drives the stirring device 10 to start stirring, starts the condenser 24, the water vapor evaporated in the shell passes through the outlet pipe 22, contacts the condensation box 25 to start cooling, and the concentrated liquid goes out of the gas The pipe 22 flows into the collector 26, and the valve 16 is turned, and the valve 16 is turned outward to open the outlet. The residue inside the device shell 27 can be cleaned from the discharge port 19, and the heating chamber 18 is placed inside the device shell 27. The water in the water tank 20 is pumped by the water pump 12 into the heating chamber 18 through the water inlet, and then flows into the water tank 20 from the water outlet, which is easy to carry out heat conduction, better heating the inside of the device shell 27, and achieve a higher rotary evaporation efficiency. Furthermore, the visual window 29 is placed on the outside of the device shell 27, and the staff can observe the inside of the device shell 27 through the visual window 29, which is convenient for adding materials, discharging materials or maintenance work, and it is easier to grasp the work progress at any time, thereby achieving the effect of observing the inside of the device shell 27 at any time.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic water removal vacuum rotary evaporation device, comprising a motor (1), a protective housing (4), a device housing (27), a water tank (20) and a water pump (12), characterized in that: The output end of the motor (1) is connected to a coaxially arranged driving gear (2) via a coupling; a transmission shaft (3) is rotatably mounted inside the protective housing (4); a driven gear (28), a first driven wheel (5) and a second driven wheel (6) are respectively fixedly connected to the transmission shaft (3) via screws; a stirring device (10) is rotatably mounted inside the device housing (27); and a third driven wheel (9) is fixedly connected to the top of the stirring device (10) via screws; A heating chamber (18) is provided inside the device housing (27); a placement platform (23), two symmetrically arranged housing support frames (17) and two symmetrically arranged pump body support frames (11) are fixedly connected to the device housing (27) by screws; a vacuum pump (7) is mounted on the two pump body support frames (11); a discharge port (19) is fixedly connected to the bottom of the device housing (27) by screws; a water inlet pipe (13), a water outlet pipe (14) and an air extraction pipe (8) are fixedly connected to the device housing (27) by screws; the air extraction pipe (8) is fixedly connected to the vacuum pump by screws. (7), the top of the device shell (27) is respectively connected to the feeding port (21) and the air outlet pipe (22) by screws, the top of the placement platform (23) is installed with a condenser (24), the placement platform (23) is fixedly connected to a collector (26) by screws, one side of the condenser (24) is fixedly connected to the condensation box (25) by screws, the other end of the air outlet pipe (22) is fixedly connected to the collector (26) by screws, the internal thread of the device shell (27) is installed with a brake shaft (15), and one end of the brake shaft (15) is fixedly connected to a valve (16) by screws.

2. The automatic water removal vacuum rotary evaporation device according to claim 1, characterized in that: A visual window (29) is installed on the device housing (27).

3. The automatic water removal vacuum rotary evaporation device according to claim 1, characterized in that: A threaded hole is provided inside the device housing (27), and the brake shaft (15) is threadedly connected inside the threaded hole.

4. The automatic water removal vacuum rotary evaporation device according to claim 1, characterized in that: A belt is commonly sleeved on the outer surfaces of the second driven wheel (6) and the third driven wheel (9).

5. The automatic water removal vacuum rotary evaporation device according to claim 1, characterized in that: A vertical hole is opened inside the condensation box (25), and the air outlet pipe (22) passes through the inside of the vertical hole.

6. The automatic water removal vacuum rotary evaporation device according to claim 1, characterized in that: The driving gear (2) and the driven gear (28) are meshed with each other.

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