Stirring reflux device for organic chemistry

Abstract

The utility model relates to a stirring reflux device for organic chemistry, and belongs to the field of stirring reflux. Comprising a workbench, a stirring barrel is fixedly arranged at the top of the workbench in a penetrating mode, the top end of the stirring barrel is open, the bottom end of the stirring barrel is conical, a valve used for discharging is fixedly connected to the bottom end of the stirring barrel, and a fixing disc is fixedly arranged at the top of the stirring barrel and used for sealing the top end of the stirring barrel; the stirring shaft and the stirring spoon are driven by the motor to fully stir materials in the stirring barrel, and meanwhile, a backflow system composed of the spiral pipe, the cooling box and the backflow pipe is utilized, so that gas generated in the stirring process can be effectively condensed and flow back into the stirring barrel, and the stirring efficiency is improved. According to the condensation device, leakage of harmful gas is avoided, cleanliness and safety of the experiment environment are guaranteed, the fan is arranged at the top of the cooling box, water in the cooling box can be further cooled, and the condensation effect is improved.

Description

Technical Field

[0001] This utility model belongs to the field of stirring and reflux, and relates to a stirring and reflux device for organic chemistry. Background Technology

[0002] Organic reaction kinetics experiments are experimental methods for studying the kinetics and mechanisms of organic reactions. A stirring and reflux apparatus is a device that achieves reaction mixing through mechanical stirring and liquid reflux.

[0003] A search revealed that utility model CN221333839U discloses a stirring reflux device for organic chemistry experiments. However, this device has the following drawbacks during use:

[0004] During use, the bottom of the return pipe is blocked by the liquid in the mixing tank, which means that the gas needs a large pressure to return to the mixing tank. When the gas pressure is low, it affects the return of the gas. Utility Model Content

[0005] In view of this, in order to solve the problem that the bottom end of the reflux pipe of the stirring reflux device is blocked by the liquid in the stirring tank during use, so that the gas needs a large pressure to flow back into the stirring tank, and the gas reflux is affected when the gas pressure is low, the present invention provides a stirring reflux device for organic chemistry.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An organic chemical stirring reflux device includes a workbench, a stirring tank fixedly mounted through the top of the workbench, the top of the stirring tank being open and the bottom of the stirring tank being conical, and a valve for discharging material being fixedly connected to the bottom of the stirring tank.

[0008] A fixed plate is fixedly installed on the top of the mixing tank to seal the top of the mixing tank. A feed hopper for feeding is connected to the top of the fixed plate. A stirring shaft is rotatably installed through the top of the fixed plate. Multiple stirring spoons for stirring are fixed on the outer wall of the stirring shaft. A motor is fixedly installed on the top of the fixed plate. The output end of the motor is fixedly connected to the stirring shaft to provide stirring power to the stirring shaft.

[0009] A connecting pipe is fixed at one end to the top of the fixed plate, and a spiral pipe is connected to the other end of the connecting pipe. A cooling tank for water storage is fixed at the top of the workbench. The spiral pipe is located inside the cooling tank. A return pipe is fixed between the mixing tank and the cooling tank. The bottom end of the spiral pipe is connected to the return pipe. A second extension pipe is connected to the end of the return pipe inside the mixing tank. A fifth one-way valve is provided on the second extension pipe for gas to return to the mixing tank.

[0010] The sealing mechanism, located below the fixed plate and used in conjunction with the stirring shaft, is used to seal the bottom of the connecting pipe and the feed hopper;

[0011] The pressurization mechanism is located inside the return pipe and works in conjunction with the stirring shaft to accelerate gas return and simultaneously cool the water in the cooling tank.

[0012] Furthermore, the pressurization mechanism includes a fixed block fixedly installed inside the return pipe, which divides the return pipe into a first cavity and a second cavity. The fixed block and the return pipe are slidably connected on one side by the same sliding rod that works with the stirring shaft. A second piston block located in the second cavity is fixedly sleeved on the outer wall of the sliding rod. The bottom end of the spiral tube is connected to a U-shaped tube, and both ends of the U-shaped tube are connected to the second cavity. The second piston block is located between the two ends of the U-shaped tube. A channel is opened on one side of the second piston block, and a sixth one-way valve is installed in the channel.

[0013] Furthermore, a fourth check valve and a third check valve are fixedly installed at both ends of the U-shaped tube to control the direction of gas flow.

[0014] Furthermore, a cam is fixedly fitted on the outer wall of the stirring shaft to abut against the sliding rod, which is used to drive the sliding rod to move.

[0015] Furthermore, a mesh plate is fixedly installed inside the first cavity, and a spring is installed inside the first cavity. The two ends of the spring are fixedly connected to the adjacent sides of the first piston block and the mesh plate, respectively, for driving the sliding rod to reset and move.

[0016] Furthermore, a first extension pipe is fixedly installed at the top of the return pipe inside the cooling box, the bottom end of the first extension pipe is connected to the first cavity, a second one-way valve is installed at the top of the first extension pipe, and a first one-way valve is fixedly installed at the outer end of the return pipe, for supplying air into the cooling box to cool the water inside the cooling box.

[0017] Furthermore, the sealing mechanism includes a rotating disc rotatably mounted at the top of the feed hopper. The bottom of the rotating disc has a through hole that works with the feed hopper and the connecting pipe. The rotating disc is connected to the stirring shaft via a transmission component to control the communication between the through hole and the feed hopper and the connecting pipe.

[0018] Furthermore, the transmission component includes a second electromagnet ring fixedly sleeved on the outer wall of the stirring shaft, a first electromagnet ring rotatably mounted on the outer wall of the second electromagnet ring, and the first electromagnet ring fixedly mounted inside the rotating disk for controlling the rotation of the rotating disk.

[0019] Furthermore, two symmetrical connecting frames are embedded in the top outer wall of the cooling box, and a fan for cooling the inside of the cooling box is fixed in the connecting frame. The two fans are set in the same direction.

[0020] The beneficial effects of this utility model are as follows:

[0021] 1. The organic chemical stirring and reflux device disclosed in this utility model uses a motor to drive a stirring shaft and a stirring spoon to fully stir the materials in the stirring tank. At the same time, the reflux system composed of a spiral tube, a cooling box and a reflux pipe can effectively condense and reflux the gas generated during the stirring process back into the stirring tank, avoiding the leakage of harmful gases and ensuring the cleanliness and safety of the experimental environment.

[0022] 2. The stirring and reflux device for organic chemistry disclosed in this utility model, by setting up a pressurization mechanism, including components such as a sliding rod, a second piston block, a U-shaped tube and a one-way valve, uses the rotation of the stirring shaft to drive the sliding rod to move, thereby pushing the second piston block to reciprocate in the second cavity, which improves the gas reflux speed and avoids the inability to reflux due to low gas pressure.

[0023] 3. The stirring and reflux device for organic chemistry disclosed in this utility model, by using a rotating disk and a through hole, and an electromagnet ring as a transmission component, realizes intelligent sealing and opening control of the bottom of the feed hopper and the connecting pipe. This not only simplifies the operation process, but also improves the automation level of the device, and ensures the continuity and stability of the experimental process.

[0024] 4. The stirring reflux device for organic chemistry disclosed in this utility model can further cool the water in the cooling tank by installing a fan at the top of the cooling tank, thereby improving the condensation effect. At the same time, air can be supplied into the cooling tank through the first extension pipe and the second one-way valve at the top of the reflux pipe to form a circulating cooling system, which further enhances the cooling effect.

[0025] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, wherein:

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a stirring and reflux device for organic chemistry according to the present invention;

[0028] Figure 2 This is a cross-sectional view of a stirring and reflux device for organic chemistry according to the present invention.

[0029] Figure 3 This is a schematic diagram of the rotating disk structure of a stirring and reflux device for organic chemistry according to the present invention;

[0030] Figure 4 This is a cross-sectional view of the reflux pipe of a stirring reflux device for organic chemistry according to this utility model;

[0031] Figure 5 for Figure 2 Enlarged structural diagram of section A in the middle;

[0032] Figure 6 for Figure 4 Enlarged structural diagram of section B.

[0033] Reference numerals: 1. Workbench; 2. Mixing tank; 3. Feed hopper; 4. Motor; 5. Connecting pipe; 6. Cooling box; 7. Connecting frame; 8. Fan; 9. Mixing shaft; 10. Mixing spoon; 11. Spiral tube; 12. Return pipe; 13. Fixed plate; 14. Rotating plate; 15. Through hole; 16. Cam; 17. Fixed block; 18. Sliding rod; 19. First piston block; 20. Spring; 21. First cavity; 22. Second cavity; 23. Second piston block; 24. First one-way valve; 25. First extension tube; 26. Second one-way valve; 27. U-shaped tube; 28. Third one-way valve; 29. ​​Fourth one-way valve; 30. Second extension tube; 31. Fifth one-way valve; 32. First electromagnet ring; 33. Second electromagnet ring; 34. Mesh plate; 35. Channel; 36. Sixth one-way valve. Detailed Implementation

[0034] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0035] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0036] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] like Figure 1-6 The illustrated stirring reflux device for organic chemistry includes a workbench 1. A stirring tank 2 is fixedly mounted through the top of the workbench 1. The top of the stirring tank 2 is open to facilitate the addition of materials. The bottom of the stirring tank 2 is conical, a design that facilitates the discharge of materials after stirring. A valve is fixedly connected to the bottom of the stirring tank 2 to control the discharge of materials.

[0038] A fixed plate 13 is fixedly installed at the top of the mixing tank 2, sealing the top of the mixing tank 2. A feed hopper 3 is connected to the top of the fixed plate 13 for adding materials into the mixing tank 2. A stirring shaft 9 is also rotatably mounted through the top of the fixed plate 13. Multiple stirring spoons 10 are fixed on the outer wall of the stirring shaft 9, and these stirring spoons 10 stir the materials in the mixing tank 2 under the drive of the stirring shaft 9. A motor 4 is also fixedly installed at the top of the fixed plate 13, and the output end of the motor 4 is fixedly connected to the stirring shaft 9 to provide stirring power to the stirring shaft 9.

[0039] A connecting pipe 5 is fixedly installed through the top of the fixed plate 13, and the other end of the connecting pipe 5 is connected to a spiral pipe 11. A cooling box 6 is fixedly installed on the top of the workbench 1, and the spiral pipe 11 is located in the cooling box 6 to cool the gas discharged from the mixing tank 2. A return pipe 12 is fixedly installed through the mixing tank 2 and the cooling box 6, and the bottom end of the spiral pipe 11 is connected to the return pipe 12. One end of the return pipe 12 located in the mixing tank 2 is connected to a second extension pipe 30, and a fifth one-way valve 31 is installed on the second extension pipe 30 to control the gas return to the mixing tank 2.

[0040] To ensure the sealing of the bottom of the connecting pipe 5 and the feed hopper 3 during the mixing process, a sealing mechanism is provided below the fixed plate 13. This sealing mechanism includes a rotating plate 14 rotatably mounted on the top of the feed hopper 3. The bottom of the rotating plate 14 has a through hole 15, which connects to the feed hopper 3 and the connecting pipe 5 when needed. The rotating plate 14 is connected to the stirring shaft 9 via a transmission component to control the opening and closing of the through hole 15. The transmission component includes a second electromagnet ring 33 fixedly sleeved on the outer wall of the stirring shaft 9. A first electromagnet ring 32 is rotatably mounted on the outer wall of the second electromagnet ring 33 and is fixedly mounted inside the rotating plate 14. When the first electromagnet ring 32 and the second electromagnet ring 33 are energized and attract each other, the rotating plate 14 rotates accordingly, connecting the through hole 15 to the feed hopper 3 and the connecting pipe 5. When the power is off, the rotating plate 14 stops rotating due to damping between itself and the stirring tank 2, and the through hole 15 closes.

[0041] To accelerate gas recirculation and cool the water in the cooling tank 6, a pressurizing mechanism is installed in the recirculation pipe 12. The pressurizing mechanism includes a fixed block 17 within the recirculation pipe 12, dividing it into a first cavity 21 and a second cavity 22. A sliding rod 18 is slidably connected to one side of the fixed block 17 and the recirculation pipe 12, and a second piston block 23 located within the second cavity 22 is fixedly fitted onto the outer wall of the sliding rod 18. A U-shaped pipe 27 is connected to the bottom end of the spiral pipe 11, with both ends of the U-shaped pipe 27 connected to the second cavity 22. The second piston block 23 is located between the two ends of the U-shaped pipe 27, and a channel 35 is provided on one side of the second piston block 23, containing a sixth one-way valve 36. A fourth one-way valve 29 and a third one-way valve 28 are fixedly installed at the two ends of the U-shaped pipe 27 to control the gas flow direction, ensuring that the second piston block 23 can perform pumping and discharging actions during its reciprocating movement, thus accelerating gas recirculation.

[0042] A cam 16 is fixedly fitted on the outer wall of the stirring shaft 9, which abuts against the sliding rod 18. When the stirring shaft 9 rotates, the cam 16 drives the sliding rod 18 to move, thereby driving the second piston block 23 to move within the second cavity 22. When the second piston block 23 moves toward one end of the U-shaped tube 27, it compresses the gas at that end, allowing it to enter the second cavity 22 through the U-shaped tube 27 and the third one-way valve 28, and then through the sixth one-way valve 36 to the other end of the second cavity 22. Simultaneously, to drive the sliding rod 18 to reset, a mesh plate 34 is fixedly installed within the first cavity 21, and a spring 20 is also installed within the first cavity 21. The two ends of the spring 20 are fixedly connected to the first piston block 19 and the mesh plate 34, respectively, on their respective adjacent sides. When the protrusion of the cam 16 moves away from the sliding rod 18, the spring 20 pushes the first piston block 19 to move, thereby driving the sliding rod 18 and the second piston block 23 to reset. During the reset process of the second piston block 23, the second cavity 22 is discharged.

[0043] To further improve the cooling effect of the cooling tank 6, a first extension pipe 25 located inside the cooling tank 6 is fixedly installed at the top of the return pipe 12, with the bottom end of the first extension pipe 25 connected to the first cavity 21. A second one-way valve 26 is installed at the top of the first extension pipe 25 to control the entry of air. At the same time, a first one-way valve 24 is also fixedly installed at the outer end of the return pipe 12 to supply air to the first cavity 21. During the movement of the first piston block 19, the air in the first cavity 21 can be squeezed out, allowing the air to be discharged into the cooling tank 6 through the first extension pipe 25 and the second one-way valve 26, which can cause the water in the cooling tank 6 to churn.

[0044] In addition, to improve the heat dissipation effect of the cooling box 6, two symmetrical connecting frames 7 are embedded in the top outer wall of the cooling box 6. A fan 8 for cooling the inside of the cooling box 6 is fixed inside the connecting frame 7. The two fans 8 are set in the same direction, which can accelerate the air flow speed inside the cooling box 6, thereby improving the heat dissipation effect.

[0045] In use, the device is powered on, and the test liquid is added into the feed hopper 3. Then, the motor 4 is started, which drives the stirring shaft 9 to rotate. At the same time, the second electromagnet ring 33 and the first electromagnet ring 32 are activated, fixing the stirring shaft 9 to the rotating disk 14. The rotation of the stirring shaft 9 drives the rotating disk 14 to rotate, which adjusts the position of the through hole 15 until it corresponds to the bottom of the feed hopper 3. The liquid in the feed hopper 3 flows into the mixing tank 2. During the rotation of the stirring shaft 9, the liquid in the mixing tank 2 is stirred and mixed. After the liquid is added, the motor 4 is started to drive the rotating disk 14 to rotate, so that the through hole 15 corresponds to the bottom of the connecting pipe 5. Then, the second electromagnet ring 33 and the first electromagnet ring 32 are closed. The gas generated by the liquid reaction can enter the spiral tube 1 through the connecting pipe 5. During the process of entering the spiral tube 11, the water in the cooling tank 6 can be cooled by the cam 16 and the water in the cooling tank 6. When the stirring shaft 9 rotates, it can also drive the cam 16 to rotate. When the convex part of the cam 16 contacts the sliding rod 18, it can drive the sliding rod 18 to move in the return pipe 12. The movement of the sliding rod 18 can drive the second piston block 23 to move. The movement of the second piston block 23 can draw the gas in the spiral tube 11 into the second cavity 22 through pressure. During the movement of the sliding rod 18, it can also drive the first piston block 19 to move. The movement of the first piston block 19 can squeeze the spring 20 and squeeze the gas in the first cavity 21. The gas can be discharged into the cooling tank 6 through the first extension pipe 25 and the second one-way valve 26, causing the water in the cooling tank 6 to churn. At the same time, the fan 8 is started to cool the water in the cooling tank 6.

[0046] When the convex part of the cam 16 moves away from the sliding rod 18, the first piston block 19 can be reset and moved under the force of the spring 20, and drive the sliding rod 18 to be reset and moved, so that one end of the sliding rod 18 is always in contact with the outer wall of the cam 16. During the reset process, the first piston block 19 can draw external air into the first cavity 21. At the same time, the movement of the sliding rod 18 can drive the second piston block 23 to be reset and moved, which can squeeze the gas in the second cavity 22, so that the gas in the second cavity 22 is discharged into the mixing tank 2 through the second extension tube 30 and the fifth one-way valve 31. During the reset process of the sliding rod 18 driving the second piston block 23, the gas in the spiral tube 11 can continue to be drawn into the second cavity 22, and the gas reflux is carried out in sequence.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stirring reflux apparatus for organic chemistry, characterized by, The utility model provides a kind of stirring device, including workbench (1), the top of workbench (1) is fixed with stirring barrel (2) throughout, the top of stirring barrel (2) is open, the bottom of stirring barrel (2) is tapered, the bottom of stirring barrel (2) is fixedly connected with valve for discharging; Fixed disc (13), the top of fixed disc (13) is fixed in stirring barrel (2), for the top of stirring barrel (2) is sealed, the top of fixed disc (13) is connected with feeding hopper (3) for feeding, the top of fixed disc (13) is rotatably provided with stirring shaft (9), the outer wall of stirring shaft (9) is fixedly provided with a plurality of stirring spoon (10) for stirring, the top of fixed disc (13) is fixedly provided with motor (4), the output end of motor (4) is fixedly connected with stirring shaft (9), and stirring shaft (9) is provided with stirring power; Connecting pipe (5), one end of connecting pipe (5) is fixedly provided in the top of fixed disc (13), the other end of connecting pipe (5) is connected with spiral pipe (11), the top of workbench (1) is fixedly provided with cooling box (6) for storing water, spiral pipe (11) is located in cooling box (6), the same backflow pipe (12) is fixedly provided between stirring barrel (2) and cooling box (6), the bottom of spiral pipe (11) is connected with backflow pipe (12), one end of backflow pipe (12) in stirring barrel (2) is connected with second extension pipe (30), fifth check valve (31) is arranged on second extension pipe (30), for gas backflow into stirring barrel (2); Sealing mechanism, arranged below fixed disc (13) and used in cooperation with stirring shaft (9), for sealing the bottom of connecting pipe (5) and feeding hopper (3); Pressure-increasing mechanism, arranged in backflow pipe (12) and used in cooperation with stirring shaft (9), for accelerating gas backflow and cooling water in cooling box (6).

2. A stirring reflux apparatus for organic chemistry as claimed in claim 1, characterized in that The pressure-increasing mechanism includes fixed block (17) fixedly arranged in backflow pipe (12), the fixed block (17) divides backflow pipe (12) into first cavity (21) and second cavity (22), the fixed block (17) and one side of backflow pipe (12) are slidably provided with the same sliding rod (18) used in cooperation with stirring shaft (9), the outer wall of sliding rod (18) is fixedly sleeved with second piston block (23) located in second cavity (22), the bottom of spiral pipe (11) is connected with U-shaped pipe (27), both ends of U-shaped pipe (27) are connected with second cavity (22), second piston block (23) is located between both ends of U-shaped pipe (27), one side of second piston block (23) is provided with channel (35), sixth check valve (36) is arranged in channel (35).

3. A stirring reflux apparatus for organic chemistry as claimed in claim 2, characterized in that Fourth check valve (29) and third check valve (28) are fixedly arranged at both ends of U-shaped pipe (27) respectively, for controlling the flow direction of gas.

4. A stirring reflux apparatus for organic chemistry as claimed in claim 3, characterized in that The outer wall of stirring shaft (9) is fixedly sleeved with cam (16) abutting against sliding rod (18), for driving sliding rod (18) to move.

5. A stirring reflux apparatus for organic chemistry as claimed in claim 4, characterized in that The first cavity (21) is fixedly provided with a screen plate (34), the first cavity (21) is provided with a spring (20), and the two ends of the spring (20) are fixedly connected with the mutually close sides of a first piston block (19) and the screen plate (34) respectively, for driving the sliding rod (18) to reset and move.

6. A stirring reflux apparatus for organic chemistry as claimed in claim 5, characterized in that The top of the return pipe (12) is fixedly provided with a first extension pipe (25) located in the cooling box (6), the bottom end of the first extension pipe (25) is communicated with the first cavity (21), the top end of the first extension pipe (25) is provided with a second one-way valve (26), the outer end of the return pipe (12) is fixedly provided with a first one-way valve (24), for conveying air into the cooling box (6) to cool the water in the cooling box (6).

7. A stirring reflux apparatus for organic chemistry as claimed in claim 1, wherein, The sealing mechanism comprises a rotating disc (14) rotatably arranged at the top end of the feeding hopper (3), a through hole (15) is formed in the bottom of the rotating disc (14) and used in cooperation with the feeding hopper (3) and the connecting pipe (5), the rotating disc (14) is connected with the stirring shaft (9) through a transmission member, and the through hole (15) is used for controlling the communication between the rotating disc (14) and the feeding hopper (3) and the connecting pipe (5).

8. A stirring reflux apparatus for organic chemistry as claimed in claim 7, characterized in that The transmission member comprises a second electromagnet ring (33) fixedly sleeved on the outer wall of the stirring shaft (9), a first electromagnet ring (32) is rotatably arranged on the outer wall of the second electromagnet ring (33), and the first electromagnet ring (32) is fixedly arranged in the rotating disc (14), so as to control the rotation of the rotating disc (14).

9. The apparatus as claimed in claim 1, wherein the apparatus is characterized by: The top outer wall of the cooling box (6) is embedded with two symmetrical connecting frames (7), the connecting frames (7) are fixedly provided with fans (8) for cooling the cooling box (6), and the two fans (8) are arranged in the same direction.

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