Two-way solvent recovery system for biochemical test

Abstract

The utility model discloses a two-way solvent recovery system for biochemical test, which comprises a sucking pump, two gas tanks and a rotary evaporator, the rotary evaporator comprises a heating pot, a flask, a rotating machine, a condenser and a collecting bottle, the two-way solvent recovery system also comprises a shell, the gas pump and the gas tanks are arranged in the shell, the output end and the input end of the sucking pump are connected with a two-position three-way valve, and the two-position three-way valve is connected with the shell. The other two air ports of the two-position three-way valve are connected to the air tanks through one-way valves respectively, the input ends of the two air tanks are connected with switching valves respectively, the upper portions of the two condensers are connected to the heat exchanger through air pipes respectively, and the input ends of the two switching valves are connected to the heat exchanger respectively. The two gas tanks are respectively vacuumized by the sucking pump, the connecting state of the sucking pump and the two gas tanks is switched by the two-position three-way valve, then the gas is pumped from the condenser pipe through the switch valve, the evaporated gas is liquefied through the condenser, and the gas is pumped by switching between two gas pumping paths by one sucking pump, so that the recovery system is simplified, and the manufacturing and using cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of test equipment, in particular to a double-path solvent recovery system for biochemical tests. Background Art

[0002] The rotary evaporator is mainly used for the purification and separation of reagents, and plays an important role in component purification, separation and synthesis experiments. The rotary evaporator consists of a bracket, a distillation flask, a heating pot and a collection component (buffer bottle, condenser and collection bottle, etc.). The bracket is used to clamp and fix the distillation flask and the collection component, so that the distillation flask is immersed in the heating pot at an appropriate depth, and can drive the distillation flask to rotate. During the rotation process, the liquid adheres to the inner wall of the distillation flask, increasing the evaporation area and accelerating the evaporation rate. The buffer bottle is used to connect the distillation flask, the condenser and the collection bottle. The steam generated by evaporation enters the buffer bottle through the outlet of the distillation flask, and then enters the condenser through the buffer bottle. The solvent liquefied in the condenser falls into the collection bottle below. The existing rotary evaporator generally uses a vacuum pump to evacuate during the distillation process. One vacuum pump is equipped with one rotary evaporator. The system is more complicated and leads to a low utilization rate of the vacuum pump. Utility Model Content

[0003] The purpose of the utility model is to provide a dual-path solvent recovery system for biochemical tests to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dual-path solvent recovery system for biochemical experiments, comprising an exhaust pump, two gas tanks, and a rotary evaporator, wherein the rotary evaporator comprises a heating pot, a flask, a rotary machine, a condenser, and a collecting bottle, wherein the flask and the condenser are respectively installed with the rotary machine, and the flask is placed in the heating pot. A spiral condenser tube is provided in the condenser, and the collecting bottle is installed at the lower end of the condenser with a clip. The utility model also comprises a shell, wherein the air pump and the gas tank are installed in the shell, wherein the output end of the exhaust pump is connected with a two-position three-way valve, and the other two air ports of the two-position three-way valve are respectively connected to the gas tank through a one-way valve, and the input ends of the two gas tanks are respectively connected with switch valves, and the upper parts of the two condensers are respectively connected to the heat exchanger through air pipes, and the input ends of the two switch valves are respectively connected to the heat exchanger.

[0005] Preferably, both ends of the condenser tube penetrate the outer wall of the condenser and extend to the outside.

[0006] Preferably, two symmetrical barometers are respectively installed on the front side of the shell, and the barometers are respectively used to measure the pressure of the gas tank.

[0007] Preferably, the heat exchanger is a tubular heat exchanger and is provided with a plurality of evenly distributed round tubes, the round tubes passing through the fins and being fixedly connected thereto, and flow channels for the solvent to pass through are formed between the fins.

[0008] Preferably, the two-position three-way valve and the switch valve both adopt solenoid valves and a button switch for control is installed on the front side of the shell.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the vacuum pump vacuums the two gas tanks respectively, the two-position three-way valve switches the connection state between the vacuum pump and the two gas tanks, and then the switch valve is used to extract gas from the condenser, and the evaporated gas is liquefied through the condenser. One vacuum pump is used to switch between the two vacuum gas paths for vacuuming, which simplifies the solvent recovery system and reduces the manufacturing and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model;

[0011] Figure 2 It is a schematic diagram of the gas circuit principle of the utility model.

[0012] In the figure: 1. Heating pot; 2. Flask; 3. Rotary machine; 4. Condenser; 5. Condenser tube; 6. Collecting bottle; 7. Shell; 8. Barometer; 9. Heat exchanger; 10. Vacuum pump; 11. Gas tank; 12. Two-position three-way valve; 13. One-way valve; 14. Switch valve. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0014] See also Figure 1-2 The utility model provides a technical solution: a dual-path solvent recovery system for biochemical experiments, comprising an air pump 10, two gas tanks 11, and a rotary evaporator, the rotary evaporator comprising a heating pot 1, a flask 2, a rotary machine 3, a condenser 4, and a collecting bottle 6, the flask 2 and the condenser 4 are respectively installed with the rotary machine 3, the flask 2 is placed in the heating pot 1, a spiral condenser 5 is provided in the condenser 4, both ends of the condenser 5 penetrate the outer wall of the condenser 4 and extend to the outside, the condenser 4 is used to receive circulating cooling water, the collecting bottle 6 is installed at the lower end of the condenser 4 with a clip, and also includes a shell 7, the air pump 10 and the gas tank 11 are installed in the shell 7, and the output end of the air pump 10 is connected to a two-position three-way valve 12.

[0015] The other two gas ports of the two-position three-way valve 12 are connected to the gas tank 11 through the one-way valve 13. The two-position three-way valve 12 is used to switch the docking state between the vacuum pump 10 and the two gas tanks 11. The input ends of the two gas tanks 11 are connected to the switch valve 14 respectively. The upper parts of the two condensers 4 are connected to the heat exchanger 9 through the air pipe respectively. The input ends of the two switch valves 14 are connected to the heat exchanger 9 respectively. The heat exchanger 9 is used for further condensation and recovery of the solvent. The two-position three-way valve 12 and the switch valve 14 are both electromagnetic valves and a button switch for control is installed on the front side of the housing 7. Two symmetrical barometers 8 are installed on the front side of the housing 7, and the barometers 8 are used to measure the pressure of the gas tank 11 respectively. The heat exchanger 9 is a tubular heat exchanger and is provided with a plurality of evenly distributed circular tubes, which penetrate the fins and are fixedly connected thereto, and flow channels for the passage of the solvent are formed between the fins. Two sets of independent flow channels are provided in the heat exchanger 9, and cooling water flows through the circular tubes for cooling and lowering the temperature, thereby realizing secondary condensation recovery and improving the recovery rate of the solvent.

[0016] Working principle: The utility model utilizes a vacuum pump 10 to respectively evacuate two rotary evaporators, and the vacuum pump 10 respectively evacuates two gas tanks 11. A two-position three-way valve 12 switches the connection state between the vacuum pump 10 and the two gas tanks 11, and then vacuums gas from the condenser 5 through the switch valve 14. The evaporated gas is liquefied through the condenser 4, and the liquefied solvent falls into the collection bottle 6 and gathers.

[0017] 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. A dual-path solvent recovery system for biochemical experiments, comprising an air pump (10), two gas tanks (11), and a rotary evaporator, wherein the rotary evaporator comprises a heating pot (1), a flask (2), a rotary machine (3), a condenser (4), and a collecting bottle (6), wherein the flask (2) and the condenser (4) are respectively mounted on the rotary machine (3), the flask (2) is placed in the heating pot (1), and the condenser (4) is provided with a spiral condenser tube (5). Features: The collecting bottle (6) is mounted on the lower end of the condenser (4) by a clip, and further comprises a shell (7). The air pump (10) and the air tank (11) are mounted in the shell (7). The output end of the air pump (10) is connected to a two-position three-way valve (12). The other two air ports of the two-position three-way valve (12) are respectively connected to the air tank (11) via a one-way valve (13). The input ends of the two air tanks (11) are respectively connected to a switch valve (14). The upper parts of the two condensers (4) are respectively connected to the heat exchanger (9) via air pipes, and the input ends of the two switch valves (14) are respectively connected to the heat exchanger (9).

2. The dual-path solvent recovery system for biochemical tests according to claim 1, Features: Both ends of the condenser tube (5) penetrate the outer wall of the condenser (4) and extend to the outside.

3. The dual-path solvent recovery system for biochemical tests according to claim 1, Features: Two symmetrical barometers (8) are respectively installed on the front side of the housing (7), and the barometers (8) are respectively used to measure the pressure of the gas tank (11).

4. The dual-path solvent recovery system for biochemical tests according to claim 1, Features: The heat exchanger (9) is a tubular heat exchanger in which a plurality of evenly distributed round tubes are arranged. The round tubes penetrate the fins and are fixedly connected thereto, and flow channels for the solvent to pass through are formed between the fins.

5. The dual-path solvent recovery system for biochemical tests according to claim 1, Features: The two-position three-way valve (12) and the switch valve (14) are both solenoid valves, and a button switch for control is installed on the front side of the housing (7).

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