Sealing device for water bath kettle of rotary evaporator

Abstract

The utility model discloses a sealing device for a water bath kettle of a rotary evaporator, which relates to the technical field of chemical experiment equipment and comprises a snakelike condensation pipe, a recovery bottle, a rotary fixing device, an adjusting support frame, an evaporation bottle, the water bath kettle and a sealing cover, the recovery bottle is connected with the snakelike condensation pipe; the evaporation bottle is connected with the snakelike condensation pipe through a rotary fixing device; the adjusting support frame is arranged below the rotary fixing device; the water bath kettle is arranged below the evaporation bottle, the evaporation bottle is obliquely arranged, and one part, located at the bottom, of the evaporation bottle is located in the water bath kettle; the sealing cover is arranged on the water bath kettle and is used for keeping the temperature of the evaporation bottle stable. According to the sealing device for the water bath kettle of the rotary evaporator, disclosed by the utility model, the semicircular plastic sealing cover is additionally arranged above the water bath kettle, so that when water volatilizes to the inner wall of the sealing cover, condensate can be formed and flows back into the water bath kettle, and the change speed of the water level in the water bath kettle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical experimental equipment, in particular to a rotary evaporator water bath sealing device. Background Art

[0002] Rotary evaporator is a commonly used equipment in the laboratory, mainly used for continuous distillation of large amounts of volatile solvents under reduced pressure. In particular, it can separate and purify the reaction products for the concentration of extracts or the distillation of receiving solutions during chromatographic separation. The basic principle of the rotary evaporator is reduced pressure distillation, that is, under reduced pressure, the distillation flask rotates continuously to evaporate the solvent. Most of the current rotary evaporators immerse the evaporating flask in a water bath and rotate it continuously, thereby continuously heating the evaporating flask. However, during the rotation and heating of the evaporating flask, as the temperature in the water bath rises, the water will evaporate, resulting in a decrease in the liquid level and reduced thermal conductivity, affecting production and experimental stability. Utility Model Content

[0003] The utility model aims to provide a rotary evaporator water bath sealing device to solve the problem of liquid level reduction caused by water volatilization in the water bath.

[0004] To achieve the above-mentioned purpose, the utility model provides a rotary evaporator water bath sealing device, comprising: a serpentine condenser, a recovery bottle, a rotary fixing device, an adjustment support frame, an evaporation bottle, a water bath, and a sealing cover;

[0005] The recovery bottle is connected to the serpentine condenser, and the serpentine condenser is used to condense the evaporated substance;

[0006] The evaporating flask is connected to the serpentine condenser tube via a rotating fixing device;

[0007] The adjustment support frame is arranged below the rotating fixing device and is used to adjust the height of the rotating fixing device;

[0008] The water bath is arranged below the evaporating flask, and the evaporating flask is arranged at an angle, with a portion of the evaporating flask located at the bottom being located in the water bath;

[0009] The sealing cover is arranged on the water bath pot to keep the temperature of the evaporating flask stable.

[0010] Preferably, in the above rotary evaporator water bath sealing device, the sealing cover is provided with an arc-shaped opening for passing through the bottleneck of the evaporating flask.

[0011] Preferably, in the above rotary evaporator water bath sealing device, a sealing ring is provided at the bottom of the sealing cover to ensure the sealing effect between the sealing cover and the water bath after the two are in contact.

[0012] Preferably, in the above-mentioned rotary evaporator water bath sealing device, the bottom of the sealing cover is located inside the sealing cover and a drainage plate is provided. When the sealing cover covers the water bath, the bottom end of the drainage plate is located inside the water bath, ensuring that condensed water formed on the sealing cover can flow into the water bath through the drainage plate.

[0013] Preferably, in the above-mentioned rotary evaporator water bath sealing device, the end surface of the drain plate connected to the sealing cover is set as a slope, and the slope is gradually inclined and in close contact with the side connected to the water bath, ensuring that the condensed water can flow smoothly to the drain plate.

[0014] Preferably, in the above rotary evaporator water bath sealing device, the sealing cover is a semicircular plastic sealing cover.

[0015] Therefore, the utility model adopts a rotary evaporator water bath sealing device of the above structure, and adds a semicircular plastic sealing cover above the water bath. When water evaporates to the inner wall of the sealing cover, condensate can be formed and flow back into the water bath, thereby reducing the speed of water level change in the water bath. At the same time, the volatile gas formed can form heat conduction and heat preservation effects in the sealing cover, so that the temperature of the entire rotary evaporation bottle remains stable and the evaporation efficiency is improved. The design of the drain plate and the sealing ring on the sealing cover ensures that the condensate in the sealing cover flows back into the water bath along with the drain plate, thereby avoiding the condensate flowing out of the water bath and causing damage due to the gap between the water bath and the sealing cover.

[0016] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a rotary evaporator water bath sealing device of the utility model;

[0018] Figure 2 It is a cross-sectional view of a water bath and a sealing cover of an embodiment of a rotary evaporator water bath sealing device of the utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at a in the middle;

[0020] Figure 4 The utility model is a side view of a sealing cover of an embodiment of a rotary evaporator water bath sealing device.

[0021] Reference numerals:

[0022] 1. Serpentine condenser; 2. Recovery bottle; 3. Rotating fixture; 4. Adjusting support frame; 5. Evaporating flask; 6. Water bath; 7. Sealing cover; 71. Arc opening; 72. Sealing ring; 73. Drainage plate. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0024] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] See attached Figure 1-3 As shown, the utility model provides a rotary evaporator water bath sealing device, comprising: a serpentine condenser tube 1, a recovery bottle 2, a rotary fixing device 3, an adjustment support frame 4, an evaporation bottle 5, a water bath 6, and a sealing cover 7;

[0026] The recovery bottle 2 is connected to the serpentine condenser tube 1, and the serpentine condenser tube 1 is used to condense the evaporated substance;

[0027] The evaporating flask 5 is connected to the serpentine condenser tube 1 via a rotating fixing device 3;

[0028] The adjustment support frame 4 is arranged below the rotating fixing device 3 and is used to adjust the height of the rotating fixing device 3;

[0029] The water bath 6 is disposed below the evaporating flask 5. The evaporating flask 5 is tilted, and a portion of the evaporating flask 5 located at the bottom is located in the water bath 6.

[0030] The sealing cover 7 is disposed on the water bath 6 to keep the temperature of the evaporating flask 5 stable.

[0031] In order to further optimize the above technical solution, an arc-shaped opening 71 is provided on the sealing cover 7 for passing through the bottleneck of the evaporating flask 5 .

[0032] Specifically, when the sealing cover 7 is in use, since the evaporating flask 5 is located in the water bath 6 , a position for the bottleneck of the evaporating flask 5 to pass through needs to be reserved on the sealing cover 7 , and therefore an arc-shaped opening 71 is provided on the sealing cover 7 .

[0033] In order to further optimize the above technical solution, a sealing ring 72 is provided at the bottom of the sealing cover 7 to ensure the sealing effect between the sealing cover 7 and the water bath pot 6 after the two are in contact.

[0034] It should be noted that a sealing ring 72 is provided at the bottom of the sealing cover 7 to avoid a gap between the sealing cover 7 and the water bath 6 when the sealing cover 7 covers the water bath 6 , thereby ensuring that condensed water on the sealing cover 7 does not seep out of the water bath 6 .

[0035] To further optimize the above technical solution, a drainage plate 73 is provided at the bottom of the sealing cover 7 inside the sealing cover 7. When the sealing cover 7 covers the water bath 6, the bottom end of the drainage plate 73 is located inside the water bath 6, ensuring that the condensed water formed on the sealing cover 7 can flow into the water bath 6 through the drainage plate 73.

[0036] Specifically, a drain plate 73 is provided on the sealing cover 7. After the water in the water bath 6 evaporates, condensed water is formed on the sealing cover 7. The bottom of the drain plate 73 is provided in the water bath 6. The condensed water flows into the water bath 6 through the drain plate 73, so as to prevent the condensed water from seeping out of the water bath 6 through the gap between the sealing cover 7 and the water bath 6. The drain plate 73 and the sealing ring 72 play a double guarantee.

[0037] To further optimize the above technical solution, the end surface of the drain plate 73 connected to the sealing cover 7 is set as an inclined surface, which gradually inclines and closely contacts the side connected to the water bath pot to ensure that the condensed water can flow smoothly to the drain plate 73.

[0038] It should be noted that the end surface of the drain plate 73 is designed as an inclined surface to ensure that the condensed water flows directly through the inclined surface to the drain plate 73 when flowing down, and then flows back to the water bath 6, preventing the condensed water from gathering on the top of the drain plate 73 and affecting the reflux.

[0039] In order to further optimize the above technical solution, the sealing cover 7 is a semicircular plastic sealing cover.

[0040] Specifically, the sealing cover 7 is designed in a semicircular shape, which matches the shape of the evaporating flask 5 to ensure that it can cover the evaporating flask 5, and the use of plastic material reduces production costs.

[0041] Working principle: When in use, the sealing cover 7 is covered on the evaporating bottle 5, so that the sealing ring 72 at the bottom is in contact with the outer edge of the water bath 6, and the drainage plate 73 is placed in the water bath 6. During the evaporation of water in the water bath 6, the steam conducts heat in the sealing cover 7 to form a heat preservation effect. Then the steam evaporates to the sealing cover 7, forming condensed water on the sealing cover 7. The condensed water flows to the drainage plate 73 through the inclined surface of the drainage plate 73, and flows back to the water bath 6 through the drainage plate 73, thereby reducing the speed of water level change in the water bath 6.

[0042] Therefore, the utility model adopts a rotary evaporator water bath sealing device of the above structure, and adds a semicircular plastic sealing cover above the water bath. When water evaporates to the inner wall of the sealing cover, condensate can be formed and flow back into the water bath, thereby reducing the speed of water level change in the water bath. At the same time, the volatile gas formed can form heat conduction and heat preservation effects in the sealing cover, so that the temperature of the entire rotary evaporation bottle remains stable and the evaporation efficiency is improved. The design of the drain plate and the sealing ring on the sealing cover ensures that the condensate in the sealing cover flows back into the water bath along with the drain plate, thereby avoiding the condensate flowing out of the water bath and causing damage due to the gap between the water bath and the sealing cover.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A rotary evaporator water bath sealing device, characterized in that: include: Serpentine condenser, recovery bottle, rotating fixture, adjustment support frame, evaporation bottle, water bath, sealing cover; The recovery bottle is connected to the serpentine condenser tube, and the serpentine condenser tube is used to condense the evaporated substance; The evaporating flask is connected to the serpentine condenser tube via a rotating fixing device; The adjustment support frame is arranged below the rotating fixing device and is used to adjust the height of the rotating fixing device; The water bath is arranged below the evaporating flask, and the evaporating flask is arranged obliquely, and a part of the evaporating flask located at the bottom is located in the water bath; The sealing cover is arranged on the water bath pot to keep the temperature of the evaporating flask stable.

2. A rotary evaporator water bath sealing device according to claim 1, characterized in that: The sealing cover is provided with an arc-shaped opening for passing through the bottleneck of the evaporating flask.

3. A rotary evaporator water bath sealing device according to claim 2, characterized in that: A sealing ring is arranged at the bottom of the sealing cover to ensure the sealing effect between the sealing cover and the water bath pot after the two are in contact.

4. A rotary evaporator water bath sealing device according to claim 3, characterized in that: The bottom of the sealing cover is located inside the sealing cover and a drainage plate is arranged therein. When the sealing cover covers the water bath, the bottom end of the drainage plate is located inside the water bath, ensuring that condensed water formed on the sealing cover can flow into the water bath through the drainage plate.

5. A rotary evaporator water bath sealing device according to claim 4, characterized in that: The end surface of the drainage plate connected to the sealing cover is configured as an inclined surface, and the inclined surface gradually inclines and is in close contact with the side connected to the water bath pot, thereby ensuring that the condensed water can smoothly flow to the drainage plate.

6. A rotary evaporator water bath sealing device according to claim 5, characterized in that: The sealing cover is a semicircular plastic sealing cover.

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