Rotary evaporator capable of preventing suck-back

Abstract

The utility model relates to the technical field of rotary evaporators, in particular to an anti-suck-back rotary evaporator which comprises a rack, a rotating mechanism is arranged on the upper side of the rack and comprises a rotating rod rotationally arranged on one side of the rack, a connecting column is fixed to one end of the rotating rod, and a through channel is formed in the inner side of the connecting column. A first motor is fixed to the upper side face of the connecting column, the output end of the first motor penetrates through the connecting column to be fixed to the upper side of the adjusting ball valve, and a transmission space is formed in the end, located in the through channel, in the connecting column and in the rotating rod; the other end of the transmission space is rotationally provided with a belt wheel, and the belt wheel and the transmission belt limiting table are sleeved with a transmission belt. The rotary evaporator solves the problem that the conventional rotary evaporator can only prevent the suck-back phenomenon by adjusting parameters in advance and cannot deal with the sudden suck-back condition.

Description

Technical Field

[0001] This utility model relates to the field of rotary evaporator technology, specifically to a rotary evaporator with anti-backflow capability. Background Technology

[0002] A rotary evaporator, also known as a rotary evaporator, is a widely used evaporation instrument in laboratories, especially suitable for fields such as chemistry, chemical engineering, and biomedicine.

[0003] Sometimes backflow occurs during the use of a rotary evaporator. The backflow is usually caused by excessive temperature, too much heating solution, or too high vacuum. The problem of too much heating solution can be solved by reducing the amount of solution added. However, excessive temperature or too high vacuum requires control of the water bath and vacuum pump.

[0004] In existing technologies, if the vacuum is too large or the temperature is too high, it can be controlled by manually shutting down the machine or manually adjusting the knob. However, sometimes back suction occurs suddenly. If it is not adjusted in time, back suction will still occur. At this time, it is too late to adjust the machine. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing rotary evaporators can only prevent backflow by adjusting parameters in advance, and cannot cope with sudden backflow situations.

[0006] To solve the above problems, the technical solution adopted by this utility model is a rotary evaporator with anti-backflow capability, including a frame, a rotating mechanism on the upper side of the frame, a rotating rod rotatably mounted on one side of the frame, a connecting column fixed at one end of the rotating rod, a through channel opened inside the connecting column, a regulating ball valve rotatably mounted in the middle of the through channel, a motor fixed on the upper side of the connecting column, the output end of the motor passing through the connecting column and fixed to the upper side of the regulating ball valve, a transmission space opened inside the connecting column at one end of the through channel and inside the rotating rod, a transmission disc rotatably mounted at one end of the connecting column, a transmission belt limiting platform fixed outside the transmission disc, a pulley rotatably mounted at the other end of the transmission space, and a transmission belt sleeved on the pulley and the outside of the transmission belt limiting platform.

[0007] As a further embodiment of this utility model: a second motor is fixed inside the rotating rod, and the output end of the second motor is fixed to one side of the pulley. The second motor drives the pulley to rotate, and drives the transmission disc to rotate through the transmission belt, so as to drive the rotary evaporator to rotate.

[0008] As a further embodiment of this utility model: a water bath and a vacuum pump are provided on one side of the frame, which are used to control the heating temperature and the vacuum degree inside the rotary evaporator, respectively.

[0009] As a further embodiment of this utility model: an opening is provided on one side of the transmission disc, and a rotary evaporator is inserted into the opening.

[0010] As a further embodiment of this utility model: a control console is provided at the top of the frame. The motor, vacuum pump, and water bath are all electrically connected to the control console. The control console is electrically connected to an external power source. If the vacuum pump or water bath malfunctions, causing the temperature to rise or the vacuum to become too large, the motor will receive a signal and directly start the regulating ball valve to block the through channel and prevent backflow.

[0011] As a further embodiment of this utility model: a through hole is provided on the side of the regulating ball valve, the diameter of which is smaller than the minimum diameter of the through channel, and the minimum diameter of the regulating ball valve is larger than the minimum diameter of the through channel, so that the through channel can be blocked when the regulating ball valve rotates.

[0012] Compared with the prior art, the advantages of this utility model are as follows: This patent adds a regulating ball valve structure. The regulating ball valve is controlled by a motor. The motor is electrically connected to the control console. At the same time, the vacuum pump and the water bath are also electrically connected to the control console. If the vacuum pump or the water bath malfunctions, causing the temperature to rise or the vacuum to be too large, the motor will receive a signal and directly start the regulating ball valve to block the through channel, prevent backflow, and stop the damage in time. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0014] Figure 1 This is a three-dimensional view of the overall structure of a rotary evaporator with anti-backflow capability according to this utility model.

[0015] Figure 2 This is a partial structural cross-section of a rotary evaporator with anti-backflow capability according to the present invention. Figure 1 .

[0016] Figure 3 This is a partial structural cross-section of a rotary evaporator with anti-backflow capability according to the present invention. Figure 2 .

[0017] Figure 4 This is an enlarged view of part A of the rotary evaporator with anti-backflow capability according to this utility model.

[0018] Figure 5 This is an enlarged view of part B of the rotary evaporator with anti-backflow capability according to this utility model.

[0019] In the attached image:

[0020] 1. Frame; 2. Rotating rod; 3. Connecting column; 4. Adjusting ball valve; 5. Motor 1; 6. Transmission space; 7. Transmission disc; 8. Pulley; 9. Transmission belt; 10. Water bath; 11. Vacuum pump; 12. Rotary evaporator flask; 13. Control console; 3.1. Through passage; 4.1. Through hole; 7.1. Transmission belt limiting platform; 7.2. Opening. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides a technical solution to address the existing problems mentioned in the background art.

[0023] Combined with appendix Figure 1 , 2 4. It can be seen that the machine includes a frame 1, a rotating mechanism on the upper side of the frame 1, a rotating rod 2 rotatably mounted on one side of the frame 1, a connecting column 3 fixed at one end of the rotating rod 2, a through channel 3.1 opened inside the connecting column 3, a regulating ball valve 4 rotatably mounted in the middle of the through channel 3.5, a motor 5 fixed on the upper side of the connecting column 3, the output end of the motor 5 passing through the connecting column 3 and fixed to the upper side of the regulating ball valve 4, a water bath 10 and a vacuum pump 11 are provided on one side of the frame 1, used to control the heating temperature and the vacuum degree in the rotary evaporator 12 respectively, and a control console 13 is provided at the top of the frame 1, where the motor 5 and the vacuum pump 11 are located. Both the vacuum pump 11 and the water bath 10 are electrically connected to the control console 13, which is electrically connected to an external power source. If the vacuum pump 11 or the water bath 10 malfunctions, causing the temperature to rise or the vacuum to become too large, the motor 5 will receive a signal and directly start the regulating ball valve 4. The regulating ball valve 4 will block the through channel 3.1 to prevent backflow. The regulating ball valve 4 has a through hole 4.1 on its side. The diameter of the through hole 4.1 is smaller than the minimum diameter of the through channel 3.1, while the minimum diameter of the regulating ball valve 4 is larger than the minimum diameter of the through channel 3.1, so that the through channel 3.1 can be blocked when the regulating ball valve 4 rotates.

[0024] Combined with appendix Figure 1 , 35. It can be seen that a transmission space 6 is opened at one end of the through channel and the inside of the rotating rod 2 in the connecting column 3. A transmission disk 7 is rotatably limited at one end of the connecting column 3. An opening 7.2 is opened on one side of the transmission disk 7. A rotary evaporator 12 is inserted into the opening 7.2. A transmission belt limiting platform 7.1 is fixed on the outside of the transmission disk 7. A pulley 8 is rotatably provided at the other end of the transmission space 6. A transmission belt 9 is sleeved on the outside of the pulley 8 and the transmission belt limiting platform 7.1. A second motor is fixed inside the rotating rod 2. The output end of the second motor is fixed to one side of the pulley 8. The second motor drives the pulley 8 to rotate, which drives the transmission disk 7 to rotate through the transmission belt 9, so as to drive the rotary evaporator 12 to rotate.

[0025] The working principle of this application is as follows: When performing biodistillation, firstly, the rotary evaporator 12 is inserted into the opening 7.2 and its position is fixed with the transmission plate 7. Then, the condenser and the receiving bottle are connected at the other end of the through channel 3.1, and the vacuum pump 11 is connected to the condenser. Then, solvent is added to the rotary evaporator 12, and the water bath 10 is placed below the rotary evaporator 12. Then, the frame 1 is controlled to make the rotary evaporator 12 enter the water bath 10, and a series of operations such as vacuuming, heating, and rotation can be performed. The motor 2 drives the pulley 8 to rotate, which can drive the transmission plate 7 to rotate through the transmission belt 9, so as to drive the rotary evaporator to rotate.

[0026] If, during operation, the vacuum pump 11 or the water bath 10 malfunctions, causing the temperature to rise or the vacuum to become too large, the motor 5 will receive a signal and directly activate the regulating ball valve 4 to block the through channel 3.1, preventing backflow and stopping the damage in time.

[0027] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rotary evaporator with anti-backflow capability, comprising a frame (1), wherein a rotating mechanism is provided on the upper side of the frame (1), characterized in that: The rotating mechanism includes a rotating rod (2) rotatably mounted on one side of the frame (1). A connecting column (3) is fixed at one end of the rotating rod (2). A through channel (3.1) is opened inside the connecting column (3). A regulating ball valve (4) is rotatably mounted in the middle of the through channel (3.1). A motor (5) is fixed on the upper side of the connecting column (3). The output end of the motor (5) passes through the connecting column (3) and is fixed to the upper side of the regulating ball valve (4). A transmission space (6) is opened inside the connecting column (3) at one end of the through channel (3.1) and inside the rotating rod (2). A transmission disc (7) is rotatably mounted at one end of the connecting column (3). A transmission belt limiting platform (7.1) is fixed on the outside of the transmission disc (7). A pulley (8) is rotatably mounted at the other end of the transmission space (6). A transmission belt (9) is sleeved on the outside of the pulley (8) and the transmission belt limiting platform (7.1).

2. The rotary evaporator with anti-backflow capability according to claim 1, characterized in that: The rotating rod (2) has a motor II fixed inside it, and the output end of the motor II is fixed to one side of the pulley (8).

3. The rotary evaporator with anti-backflow capability according to claim 2, characterized in that: A water bath (10) and a vacuum pump (11) are provided on one side of the frame (1).

4. The rotary evaporator with anti-backflow capability according to claim 1, characterized in that: An opening (7.2) is provided on one side of the transmission disc (7), and a rotary evaporator (12) is inserted into the opening (7.2).

5. A rotary evaporator with anti-backflow capability according to claim 3, characterized in that: The top of the frame (1) is equipped with a control console (13). The motor (5), vacuum pump (11), and water bath (10) are all electrically connected to the control console (13). The control console (13) is electrically connected to an external power source.

6. The rotary evaporator with anti-backflow capability according to claim 1, characterized in that: The regulating ball valve (4) has a through hole (4.1) on its side. The diameter of the through hole (4.1) is smaller than the minimum diameter of the through channel (3.1), and the minimum diameter of the regulating ball valve (4) is larger than the minimum diameter of the through channel (3.1).

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