Double-opening type rotary evaporator

Abstract

The utility model belongs to the technical field of rotary evaporators, and particularly relates to a double-opening type rotary evaporator which comprises a bottom plate, a water bath heater and a hollow support, the water bath heater and the hollow support are arranged at the top of the bottom plate, a height adjusting assembly is arranged in the hollow support and provided with a second connecting rod, and a hollow shell is hinged to one end of the second connecting rod. A first connecting block is rotationally arranged at one end of the hollow shell, a distillation flask body is in threaded connection with the first connecting block, a condenser assembly is mounted at the other end of the hollow shell, a collecting flask is mounted at the bottom of the condenser assembly, a first connecting rod is arranged on the inner wall of the hollow shell, and a first circular groove and a second circular groove are formed in the hollow shell; a double-shaft motor is installed at the bottom of the first connecting rod, and a first worm and a second worm are installed at the two output ends of the double-shaft motor correspondingly. According to the device, the evaporation speed in liquid of the distillation flask body can be increased, so that the separation speed is increased, and meanwhile, the condensation effect can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rotary evaporators, and specifically relates to a double-port rotary evaporator. Background Art

[0002] The rotary evaporator is an evaporation instrument widely used in laboratories, also known as a rotary evaporator. It consists of a motor, a distillation flask, a heating pot, a condenser and other parts. It is mainly used for continuous distillation of volatile solvents under reduced pressure conditions. It is particularly suitable for the fields of chemistry, chemical industry, biomedicine, etc. The working principle of the rotary evaporator is mainly to rotate the distillation flask in the heating pot at an appropriate speed through the rotation of the motor to increase the evaporation area. In addition, the evaporation rate of the solvent can be controlled by adjusting the temperature of the heating pot. Finally, the evaporated solvent is condensed and collected through the condenser.

[0003] However, when the rotary evaporator is in use, the distillation flask rotates at an appropriate speed in the heating pot. It can only evaporate the liquid into gas by rotating, resulting in a slow evaporation speed. A long time is required for subsequent separation, resulting in a low working speed.

[0004] At the same time, the condenser only condenses the liquid flowing through the condenser tube. If there is a lot of evaporated gas, the condensation effect of the condenser tube will become worse, resulting in worse separation effect, and it will take a long time to separate.

[0005] To this end, we proposed a double-port rotary evaporator, which can not only increase the evaporation rate of the liquid inside the distillation flask, thereby increasing the separation speed, but also improve the condensation effect. Utility Model Content

[0006] The purpose of the utility model is to provide a double-port rotary evaporator, which can not only improve the evaporation speed of the liquid inside the distillation flask body, thereby improving the separation speed, but also improve the condensation effect.

[0007] The technical solutions adopted in this utility are as follows:

[0008] A double-port rotary evaporator, comprising a bottom plate, a water bath heater and a hollow bracket arranged on the top of the bottom plate, a height adjustment component arranged inside the hollow bracket, a second connecting rod arranged on the height adjustment component, a hollow shell being hinged at one end of the second connecting rod, a first connecting block being rotatably arranged at one end of the hollow shell, a distillation flask body being threadedly connected to the first connecting block, a condenser component being installed at the other end of the hollow shell, and a collecting bottle being installed at the bottom of the condenser component;

[0009] A first connecting rod is arranged on the inner wall of the hollow shell, and a first circular groove and a second circular groove are opened inside the hollow shell, a double-shaft motor is installed at the bottom of the first connecting rod, and a first worm and a second worm are installed at two output ends of the double-shaft motor respectively;

[0010] A first annular disk is disposed inside the first circular groove, the first annular disk is sleeved on a first fixed disk, a first gear disk is disposed on the first fixed disk, the first gear disk is meshed with the first worm, and a first fixing rod is installed on one side of the first fixed disk, an end of the first fixing rod away from the first fixing disk extends to the inside of the distillation flask body, and a stirring blade is disposed on the part of the first fixing rod located inside the distillation flask body;

[0011] A second annular disk is disposed inside the second circular groove. The second annular disk is sleeved on a second fixed disk. A second gear disk is disposed on the second fixed disk. The second gear disk is meshed with the second worm, and one side of the second fixed disk is connected to the first connecting block.

[0012] Furthermore, through holes are formed on the first fixed plate, the second fixed plate, the first annular plate, the second annular plate, the first gear plate and the second gear plate.

[0013] Furthermore, the condenser assembly includes a first glass cylinder and a condenser tube arranged inside the first glass cylinder, a first liquid inlet tube and a first liquid discharge tube are arranged on the condenser tube, and a second glass cylinder is arranged outside the first glass cylinder, a condensation channel is arranged between the first glass cylinder and the second glass cylinder, and a second liquid inlet tube and a second liquid discharge tube are arranged on the second glass cylinder.

[0014] Furthermore, the height adjustment assembly includes a stepper motor arranged on the top of the hollow bracket, a threaded rod is installed at the output end of the stepper motor, the bottom of the threaded rod passes through the hollow bracket, and a threaded sleeve is sleeved on the threaded rod, and one side of the threaded sleeve is connected to the second connecting rod.

[0015] Furthermore, a sliding groove is provided on the hollow bracket, and the second connecting rod is slidably arranged inside the sliding groove.

[0016] Furthermore, the width of the stirring blade plus the width of the first fixing rod is smaller than the width of the opening of the distillation flask body.

[0017] The technical effects achieved by this utility model are:

[0018] 1. The first fixed rod is made to carry the stirring blade into the interior of the distillation flask body, and then the distillation flask body is threadedly installed on the first connecting block. The threaded rod is driven by a stepping motor so that the threaded sleeve drives the second connecting rod to move the hollow shell up and down, thereby adjusting the height. Then, the first worm and the second worm are driven to rotate by a double-axis motor. When the first worm rotates, it drives the first gear plate to rotate. The first gear plate drives the first fixed plate to rotate the first annular plate inside the first circular groove, thereby improving its rotation stability. At the same time, the first fixed plate drives the first fixed rod to make the stirring blade stir the liquid inside the distillation flask body, thereby improving its evaporation effect and thus improving the separation speed. At the same time, when the second worm rotates, it drives the second gear plate to rotate. The second gear plate drives the second fixed plate to rotate the second annular plate inside the second circular groove, thereby improving its rotation stability. At the same time, the second fixed plate drives the first connecting block to make the distillation flask body rotate inside the water bath heater, thereby heating and evaporating the liquid inside the distillation flask body, which is enough to increase the evaporation speed of the liquid inside the distillation flask body, thereby increasing the separation speed.

[0019] 2. The evaporated gas flows into the condenser body through the through hole, and external cooling water enters the condenser through the first liquid inlet pipe and the first liquid discharge pipe, thereby condensing the evaporated gas to form a liquid, and external cooling water enters the condensation channel through the second liquid inlet pipe and the second liquid discharge pipe, thereby improving the condensation effect. This device can not only increase the evaporation rate of the liquid inside the distillation flask body, thereby increasing the separation speed, but also improve the condensation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure inside the hollow shell of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the stirring blade of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the condenser tube of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the regulating component of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Bottom plate; 2. Water bath heater; 3. Hollow bracket; 4. Second connecting rod; 5. Hollow shell; 6. First connecting block; 7. Distillation flask body; 8. Collecting bottle; 9. First circular groove; 10. Second circular groove; 11. Double-axis motor; 12. First worm; 13. Second worm; 14. First annular disk; 15. First fixed disk; 16. First gear disk; 17. First fixed rod; 18. Stirring blade; 19. Second annular disk; 20. Second fixed disk; 21. Second gear disk; 22. First glass cylinder; 23. Condenser; 24. Second glass cylinder; 25. Stepper motor; 26. Threaded rod; 27. Threaded sleeve. DETAILED DESCRIPTION

[0027] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0028] like Figure 1-5 As shown, the technical solution adopted by the utility model is as follows: a double-port rotary evaporator includes a bottom plate 1 and a water bath heater 2 and a hollow bracket 3 arranged on the top of the bottom plate 1. The water bath heater 2 is a device for heating or maintaining the temperature of a water bath, which is usually used in laboratories, industrial production and families. The principle of the water bath heater is to put water into a heating container, heat the water to the required temperature through a heating element, and maintain a constant temperature state. The main types of water bath heaters include electric constant temperature water baths, oil constant temperature water baths and steam constant temperature water baths. Among them, the electric constant temperature water bath is the most commonly used one, and its advantages are accurate temperature control, simple operation, easy cleaning and maintenance. It belongs to the prior art and will not be described in detail here.

[0029] A height adjustment component is arranged inside the hollow bracket 3, and the height of the whole device is adjusted by the height adjustment component. The height adjustment component is provided with a second connecting rod 4, and a hollow shell 5 is hinged at one end of the second connecting rod 4. A first connecting block 6 is rotatably arranged at one end of the hollow shell 5, and a distillation bottle body 7 is threadedly connected to the first connecting block 6. A condenser component is installed at the other end of the hollow shell 5, and a collecting bottle 8 is installed at the bottom of the condenser component.

[0030] A first connecting rod is provided on the inner wall of the hollow shell 5, and a first circular groove 9 and a second circular groove 10 are opened inside the hollow shell 5. A dual-axis motor 11 is installed at the bottom of the first connecting rod, and a first worm 12 and a second worm 13 are installed at two output ends of the dual-axis motor 11 respectively. The first worm 12 and the second worm 13 are driven to rotate by the dual-axis motor 11.

[0031] A first annular disk 14 is disposed inside the first circular groove 9, and the first annular disk 14 is sleeved on a first fixed disk 15, and a first gear disk 16 is disposed on the first fixed disk 15, and the first gear disk 16 is meshed with the first worm 12, and a first fixing rod 17 is installed on one side of the first fixed disk 15, and one end of the first fixing rod 17 away from the first fixing disk 15 extends to the inside of the distillation flask body 7, and a stirring blade 18 is disposed on the part of the first fixing rod 17 located inside the distillation flask body 7;

[0032] A second annular disk 19 is disposed inside the second circular groove 10 . The second annular disk 19 is sleeved on a second fixed disk 20 . A second gear disk 21 is disposed on the second fixed disk 20 . The second gear disk 21 meshes with the second worm 13 , and one side of the second fixed disk 20 is connected to the first connecting block 6 .

[0033] The above working principle is: first, during installation, the first fixed rod 17 is brought into the distillation flask body 7 with the stirring blade 18, and then the distillation flask body 7 is threadedly installed on the first connecting block 6, and then the first worm 12 and the second worm 13 are driven to rotate by the dual-axis motor 11. When the first worm 12 rotates, it drives the first gear plate 16 to rotate, and the first gear plate 16 drives the first fixed plate 15 to make the first annular plate 14 rotate inside the first circular groove 9, thereby improving its rotation stability. At the same time, the first fixed plate 15 drives the first fixed rod 17 to make the stirring blade 18 stir the liquid inside the distillation flask body 7, thereby improving its evaporation effect and thus increasing the separation speed. At the same time, when the second worm 13 rotates, it drives the second gear plate 21 to rotate, and the second gear plate 21 drives the second fixed plate 20 to make the second annular plate 19 rotate inside the second circular groove 10, thereby improving its rotation stability. At the same time, the second fixed plate 20 drives the first connecting block 6 to make the distillation flask body 7 rotate inside the water bath heater 2, thereby heating and evaporating the liquid inside the distillation flask body 7. The device can increase the evaporation rate of the liquid inside the distillation flask body 7, thereby increasing the separation speed.

[0034] In order to ensure that the stirring blade 18 can enter the interior of the distillation flask body 7 , the width of the stirring blade 18 plus the width of the first fixing rod 17 is smaller than the width of the opening of the distillation flask body 7 .

[0035] At the same time, in order to provide threads on the first connecting block 6 , a threaded cover is provided on the distillation flask body 7 , and the threaded cover matches the threads. Such a configuration enables the distillation flask body 7 to be threadedly installed on the first connecting block 6 .

[0036] In order to enable the first worm 12 to drive the first gear plate 16 to rotate and the second worm 13 to drive the second gear plate 21 to rotate, thread grooves are provided on the first worm 12 and the second worm 13 to match the gears on the first gear plate 16 and the second gear plate 21. Matching here means that the first worm 12 can drive the first gear plate 16 to rotate and the second worm 13 can drive the second gear plate 21 to rotate.

[0037] The first fixed plate 15, the second fixed plate 20, the first annular plate 14, the second annular plate 19, the first gear plate 16 and the second gear plate 21 are all provided with through holes, and the provision of the through holes enables the evaporated gas to pass into the interior of the condenser assembly.

[0038] It should be noted that the dual-axis motor 11 is a type of motor that is characterized by having two independent motor shafts. This design allows the dual-axis motor 11 to drive two different loads at the same time, or when greater torque or power is required, the torque or power of the two motors can be added in parallel. Its model is YSK18W dual-axis motor 11.

[0039] Before using the utility model, the liquid to be evaporated needs to be placed in the distillation flask body 7, which increases its weight when placed in the distillation flask, making it very cumbersome to install and remove. Therefore, the distillation flask body 7 of the utility model is provided with a double-mouth type, such as Figure 3 As shown, connecting pipes are provided on both sides, one connecting pipe is used for installation, and the other connecting pipe is used for liquid entry or liquid discharge, so as to facilitate installation and disassembly.

[0040] like Figure 4 As shown, the condenser assembly includes a first glass cylinder 22 and a condenser tube 23 arranged inside the first glass cylinder 22, a first liquid inlet tube and a first liquid discharge tube are arranged on the condenser tube 23, external cooling water enters the condenser tube 23 through the first liquid inlet tube and the first liquid discharge tube, thereby condensing the evaporated gas to form a liquid, and a second glass cylinder 24 is arranged on the outside of the first glass cylinder 22, a condensation channel is arranged between the first glass cylinder 22 and the second glass cylinder 24, and a second liquid inlet tube and a second liquid discharge tube are arranged on the second glass cylinder 24, and external cooling water enters the inside of the condensation channel through the second liquid inlet tube and the second liquid discharge tube, thereby improving the condensation effect.

[0041] The first liquid inlet pipe, the second liquid inlet pipe, the second liquid discharge pipe and the first liquid discharge pipe use the same power source, thereby achieving an energy saving effect.

[0042] like Figure 5As shown, the height adjustment assembly includes a stepper motor 25 arranged on the top of the hollow bracket 3, and a threaded rod 26 is installed at the output end of the stepper motor 25. The bottom of the threaded rod 26 passes through the hollow bracket 3, and a threaded sleeve 27 is sleeved on the threaded rod 26. The bottom of the threaded sleeve 27 is connected to the second connecting rod 4.

[0043] The stepping motor 25 drives the threaded rod 26 so that the threaded sleeve 27 drives the second connecting rod 4 to move the hollow shell 5 up and down, thereby adjusting the height.

[0044] Meanwhile, a slide groove is provided on the hollow bracket 3, and a second connecting rod 4 is slidably arranged inside the slide groove, so that the second connecting rod 4 can move inside the slide groove.

[0045] The working principle of the utility model is as follows: first, during installation, the first fixing rod 17 is made to carry the stirring blade 18 into the interior of the distillation flask body 7, and then the distillation flask body 7 is threadedly installed on the first connecting block 6, and the threaded rod 26 is driven by the stepping motor 25 so that the threaded sleeve 27 drives the second connecting rod 4 to move the hollow shell 5 up and down, thereby adjusting the height, and then the first worm 12 and the second worm 13 are driven to rotate by the double-axis motor 11, and the first worm 12 drives the first gear plate 16 to rotate when the first worm 12 rotates, and the first gear plate 16 drives the first fixing plate 15 to make the first annular plate 14 rotate inside the first circular groove 9, thereby improving its rotation stability, and at the same time, the first fixing plate 15 drives the first fixing rod 17 to make the stirring blade 18 stir the liquid inside the distillation flask body 7, thereby improving its evaporation effect, thereby improving the separation speed, At the same time, when the second worm 13 rotates, it drives the second gear plate 21 to rotate. The second gear plate 21 drives the second fixed plate 20 to make the second annular plate 19 rotate inside the second circular groove 10, thereby improving its rotation stability. At the same time, the second fixed plate 20 drives the first connecting block 6 to make the distillation flask body 7 rotate inside the water bath heater 2, thereby heating and evaporating the liquid inside the distillation flask body 7, and the evaporated gas flows into the condenser body through the through hole. At the same time, the external cooling water enters the condenser 23 through the first liquid inlet pipe and the first liquid discharge pipe, thereby condensing the evaporated gas to form a liquid, and the external cooling water enters the condensation channel through the second liquid inlet pipe and the second liquid discharge pipe, thereby improving the condensation effect. The device can not only increase the evaporation rate of the liquid inside the distillation flask body 7, thereby increasing the separation speed, but also improve the condensation effect.

[0046] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A double-port rotary evaporator, comprising a bottom plate (1), a water bath heater (2) and a hollow bracket (3) arranged on the top of the bottom plate (1), characterized in that: A height adjustment component is arranged inside the hollow support (3), and the height adjustment component is provided with a second connecting rod (4), one end of the second connecting rod (4) is hinged with a hollow shell (5), one end of the hollow shell (5) is rotatably provided with a first connecting block (6), a distillation flask body (7) is threadedly connected to the first connecting block (6), a condenser component is installed at the other end of the hollow shell (5), and a collecting bottle (8) is installed at the bottom of the condenser component; A first connecting rod is arranged on the inner wall of the hollow shell (5), and a first circular groove (9) and a second circular groove (10) are opened inside the hollow shell, a double-axis motor (11) is installed at the bottom of the first connecting rod, and a first worm (12) and a second worm (13) are respectively installed at two output ends of the double-axis motor (11); A first annular disk (14) is arranged inside the first circular groove (9), the first annular disk (14) is sleeved on a first fixed disk (15), a first gear disk (16) is arranged on the first fixed disk (15), the first gear disk (16) is meshed with the first worm (12), and a first fixing rod (17) is installed on one side of the first fixed disk (15), an end of the first fixing rod (17) away from the first fixing disk (15) extends to the inside of the distillation flask body (7), and a stirring blade (18) is arranged on the part of the first fixing rod (17) located inside the distillation flask body (7); A second annular disk (19) is arranged inside the second circular groove (10), the second annular disk (19) is sleeved on a second fixed disk (20), a second gear disk (21) is arranged on the second fixed disk (20), the second gear disk (21) is meshed with the second worm (13), and one side of the second fixed disk (20) is connected to the first connecting block (6).

2. A double-port rotary evaporator according to claim 1, characterized in that: Through holes are formed on the first fixed disk (15), the second fixed disk (20), the first annular disk (14), the second annular disk (19), the first gear disk (16) and the second gear disk (21).

3. A double-port rotary evaporator according to claim 1, characterized in that: The condenser assembly comprises a first glass cylinder (22) and a condenser tube (23) arranged inside the first glass cylinder (22), a first liquid inlet tube and a first liquid discharge tube are arranged on the condenser tube (23), and a second glass cylinder (24) is arranged on the outside of the first glass cylinder (22), a condensation channel is arranged between the first glass cylinder (22) and the second glass cylinder (24), and a second liquid inlet tube and a second liquid discharge tube are arranged on the second glass cylinder (24).

4. A double-port rotary evaporator according to claim 1, characterized in that: The height adjustment assembly comprises a stepper motor (25) arranged on the top of the hollow bracket (3), a threaded rod (26) is installed at the output end of the stepper motor (25), the bottom of the threaded rod (26) passes through the hollow bracket (3), and a threaded sleeve (27) is sleeved on the threaded rod (26), and one side of the threaded sleeve (27) is connected to the second connecting rod (4).

5. A double-port rotary evaporator according to claim 1, characterized in that: The hollow bracket (3) is provided with a sliding groove, and the second connecting rod (4) is slidably arranged inside the sliding groove.

6. A double-port rotary evaporator according to claim 1, characterized in that: The width of the stirring blade (18) plus the width of the first fixing rod (17) is smaller than the width of the opening of the distillation flask body (7).

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