Pressure relief assembly and rotary evaporator

Abstract

The utility model discloses a pressure relief assembly and a rotary evaporator, and relates to the technical field of pharmaceutical and chemical equipment. The device comprises a fixed base and a distillation bottle, a water bath kettle and a rotator are fixedly mounted on the fixed base, a solvent recovery bottle is placed on the fixed base, the distillation bottle is placed in the water bath kettle, a driving end of the rotator is fixedly connected with the distillation bottle, and a driving end of the rotator is fixedly connected with the solvent recovery bottle. A condenser and a drainage pipe are installed and communicated on the distillation flask, the output end of the drainage pipe is communicated with the solvent recovery bottle, an upper sealing pot cover covers the water bath pot, a constant-temperature cylinder is fixedly installed in the upper sealing pot cover, a flow guide opening is formed in the bottom end of the constant-temperature cylinder, an upper pressing arc block is fixedly installed at the bottom end of the constant-temperature cylinder, and a lower pressing arc block is fixedly installed at the bottom end of the constant-temperature cylinder. A flow guide groove is formed in the upper arc pressing block and communicated with the flow guide opening, so that a more efficient water bath heating effect can be achieved, meanwhile, the safety problem caused by excessive water vapor is avoided, and the safety efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pharmaceutical and chemical equipment, and specifically relates to a pressure relief component and a rotary evaporator. Background Art

[0002] The rotary evaporator is a pharmaceutical laboratory instrument that keeps the flask containing reactants and solvents rotating continuously under reduced pressure, so that the wall of the flask is evenly heated and a layer of solution liquid film is attached to the wall of the flask, thereby increasing the evaporation area, accelerating the evaporation rate, and quickly evaporating volatile solvents.

[0003] When the water bath heats the solution in the distillation flask, the boiling water will float out in the form of water vapor. If the water bath is open, it will cause excessive loss of the medium in the water bath. If the water bath is closed, the water vapor inside will continue to gather, causing the air pressure to increase, eventually damaging the distillation flask and even affecting the life safety of the experimenters. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a pressure relief component and a rotary evaporator which can overcome the above problems or at least partially solve the above problems.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is: a pressure relief component, including a fixed base and a distillation flask, a water bath and a rotator are fixedly installed on the fixed base, a solvent recovery bottle is placed on the fixed base, the distillation flask is placed in the water bath, the driving end of the rotator is fixedly connected to the distillation flask, a condenser and a drainage tube are installed and connected on the distillation flask, the output end of the drainage tube is connected to the solvent recovery bottle, the water bath pot upper cover is equipped with an upper sealing pot cover, a constant temperature cylinder is fixedly installed in the upper sealing pot cover, the bottom end of the constant temperature cylinder is provided with a guide port, the bottom end of the constant temperature cylinder is fixedly installed with an upper pressure arc block, the upper pressure arc block is provided with a guide groove, and the guide groove is connected with the guide port.

[0006] In order to perform constant temperature control on the constant temperature cylinder, preferably, a constant temperature pipe groove is provided in the constant temperature cylinder, a liquid discharge pipe and a liquid inlet pipe are fixedly installed on the constant temperature cylinder, and the liquid discharge pipe and the liquid inlet pipe are connected to the constant temperature pipe groove.

[0007] In order to stir the liquid in the constant temperature cylinder, further, a rotating motor is fixedly installed on the upper sealing pot cover, a rotating shaft is rotatably installed in the upper sealing pot cover, a stirring roller is fixedly installed at the bottom end of the rotating shaft, the stirring roller is located in the constant temperature cylinder, and the rotating shaft is fixedly connected to the driving end of the rotating motor.

[0008] In order to prevent impurities from blocking the guide port, further, an arc-shaped hanging bar matching the bottom end of the inner wall of the constant temperature cylinder is fixedly installed at the bottom end of the stirring roller.

[0009] In order to prevent the upper pressure arc block from hindering the rolling of the distillation flask, preferably, a plurality of balls are rotatably mounted on the bottom surface of the upper pressure arc block.

[0010] A rotary evaporator comprising the pressure relief assembly as described above.

[0011] After adopting the above technical scheme, the utility model has the following beneficial effects compared with the prior art: the pressure relief component and the rotary evaporator of the utility model collect the water vapor generated by the water bath pot by a constant temperature cylinder, and at the same time, the temperature of the constant temperature cylinder is lower than the temperature of the water vapor and has a high temperature, so that the water droplets collected in the constant temperature cylinder still maintain a high temperature, and the high-temperature water flows from the guide port to the guide groove, and then flows downward along the top surface of the distillation flask, realizing a heating effect from top to bottom, and combined with the heating of the water bath pot below, a more efficient water bath heating effect is achieved, while avoiding the safety problem of excessive water vapor and improving safety efficiency.

[0012] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In the attached picture:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the hidden upper sealed pot cover of the utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the upper sealed pot cover of the utility model;

[0017] Figure 4 It is a schematic diagram of the internal structure of the constant temperature cylinder of the utility model.

[0018] In the figure: 1. fixed base; 2. water bath; 3. rotator; 4. solvent recovery bottle; 5. condenser; 6. drainage tube; 7. upper sealing lid; 8. rotating motor; 9. distillation flask; 10. rotating shaft; 11. constant temperature cylinder; 111. diversion port; 112. constant temperature pipe groove; 12. drain pipe; 13. liquid inlet pipe; 14. stirring roller; 15. arc hanging bar; 16. upper pressure arc block; 161. diversion groove; 17. ball bearing. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0020] Example:

[0021] Reference Figure 1-4 As shown, the pressure relief assembly includes a fixed base 1 and a distillation flask 9, a water bath 2 and a rotator 3 are fixedly mounted on the fixed base 1, a solvent recovery bottle 4 is placed on the fixed base 1, the distillation flask 9 is placed in the water bath 2, the driving end of the rotator 3 is fixedly connected to the distillation flask 9, a condenser 5 and a drainage tube 6 are installed and connected to the distillation flask 9, the output end of the drainage tube 6 is connected to the solvent recovery bottle 4, the water bath 2 is covered with an upper sealing pot cover 7, a constant temperature cylinder 11 is fixedly mounted in the upper sealing pot cover 7, a guide port 111 is provided at the bottom end of the constant temperature cylinder 11, an upper arc pressure block 16 is fixedly mounted at the bottom end of the constant temperature cylinder 11, a guide groove 161 is provided in the upper arc pressure block 16, and the guide groove 161 is connected to the guide port 111.

[0022] A constant temperature pipe groove 112 is provided in the constant temperature cylinder 11, a liquid discharge pipe 12 and a liquid inlet pipe 13 are fixedly installed on the constant temperature cylinder 11, and the liquid discharge pipe 12 and the liquid inlet pipe 13 are communicated with the constant temperature pipe groove 112, a rotating motor 8 is fixedly installed on the upper sealing pot cover 7, a rotating shaft 10 is rotatably installed in the upper sealing pot cover 7, a stirring roller 14 is fixedly installed at the bottom end of the rotating shaft 10, the stirring roller 14 is located in the constant temperature cylinder 11, the rotating shaft 10 is fixedly connected to the driving end of the rotating motor 8, and the bottom end of the stirring roller 14 is fixedly connected to the driving end of the rotating motor 8. An arc-shaped hanging bar 15 matching the bottom end of the inner wall of the constant temperature cylinder 11 is fixedly installed, and a high-temperature liquid is transported through the liquid inlet pipe 13. For example, if the water vapor is 100°C, the liquid inlet pipe 13 transports water at 95°C. The water vapor will therefore re-condense into liquid in the constant temperature cylinder 11 without excessive cooling. The stirring roller 14 then rotates and stirs the liquid to fully contact the constant temperature cylinder 11, so that the liquid in the constant temperature cylinder 11 always maintains a high temperature and finally flows from the guide port 111 to the guide groove 161.

[0023] A plurality of balls 17 are rotatably mounted on the bottom surface of the upper arc pressure block 16, and the balls 17 are in contact with the surface of the distillation flask 9. When the distillation flask 9 rolls, the balls 17 are driven to roll, thereby preventing excessive friction between the distillation flask 9 and the upper arc pressure block 16, which would affect the rolling of the distillation flask 9.

[0024] The utility model is characterized in that reactants and solution are placed into a distillation flask 9, a water bath 2 and a rotator 3 are started, the rotator 3 drives the distillation flask 9 to rotate, and the water bath 2 is heated by a water bath. The high-temperature water vapor generated in the water bath 2 floats upward along the gap between the upper sealing pot cover 7 and the constant temperature cylinder 11. The upper sealing pot cover 7 has an arc-shaped concave top, and the water vapor is collected and then contacts the constant temperature cylinder 11 to be condensed into water again, and is collected in the constant temperature cylinder 11. The high-temperature liquid in the guide port 111 is used for high-temperature insulation, so that the high-temperature water leaves the guide groove 161 in the constant temperature cylinder 11, and then flows downward along the arc surface on the top of the distillation flask 9, and the distillation flask 9 is heated again from top to bottom.

[0025] The above is only a preferred embodiment of the utility model, and does not impose any form of limitation on the utility model. Although the utility model has been disclosed as above in the preferred embodiment, it is not used to limit the utility model. Any technician familiar with this patent can make equivalent replacements or changes based on the technical solution and utility model concept of the utility model without departing from the scope of the technical solution of the utility model, which should be covered within the protection scope of the utility model.

Claims

1. A pressure relief assembly, characterized in that: The invention comprises a fixed base (1) and a distillation flask (9), wherein a water bath (2) and a rotator (3) are fixedly mounted on the fixed base (1), a solvent recovery bottle (4) is placed on the fixed base (1), the distillation flask (9) is placed in the water bath (2), a driving end of the rotator (3) is fixedly connected to the distillation flask (9), a condenser (5) and a drainage pipe (6) are mounted on the distillation flask (9) and are in communication with each other, and a flow path of the drainage pipe (6) is connected to the distillation flask (9). The outlet end is communicated with the solvent recovery bottle (4); the water bath pot (2) is covered with an upper sealing pot cover (7); a constant temperature cylinder (11) is fixedly installed in the upper sealing pot cover (7); a guide port (111) is provided at the bottom end of the constant temperature cylinder (11); an upper arc pressure block (16) is fixedly installed at the bottom end of the constant temperature cylinder (11); a guide groove (161) is provided in the upper arc pressure block (16); and the guide groove (161) is communicated with the guide port (111).

2. The pressure relief assembly according to claim 1, characterized in that: A constant temperature pipe groove (112) is provided in the constant temperature cylinder (11), and a liquid discharge pipe (12) and a liquid inlet pipe (13) are fixedly installed on the constant temperature cylinder (11), and the liquid discharge pipe (12) and the liquid inlet pipe (13) are in communication with the constant temperature pipe groove (112).

3. The pressure relief assembly according to claim 2, characterized in that: A rotating motor (8) is fixedly mounted on the upper pot cover (7), a rotating shaft (10) is rotatably mounted inside the upper pot cover (7), a stirring roller (14) is fixedly mounted at the bottom end of the rotating shaft (10), the stirring roller (14) is located inside the constant temperature cylinder (11), and the rotating shaft (10) is fixedly connected to the driving end of the rotating motor (8).

4. The pressure relief assembly according to claim 3, characterized in that: An arc-shaped hanging bar (15) matching the bottom end of the inner wall of the constant temperature cylinder (11) is fixedly mounted on the bottom end of the stirring roller (14).

5. The pressure relief assembly according to claim 1, characterized in that: A plurality of balls (17) are rotatably mounted on the bottom surface of the upper arc-pressing block (16).

6. A rotary evaporator, characterized in that The rotary evaporator comprises the pressure relief assembly according to any one of claims 1-5.

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