Vacuum device special for medium-large rotary evaporator

Abstract

The utility model relates to the technical field of rotary evaporators, in particular to a vacuum device special for medium and large rotary evaporators, which comprises a rotary evaporator main body, an exhaust pipe fixedly mounted on a pipe body of the rotary evaporator main body, an electromagnetic valve fixedly mounted on the exhaust pipe, and a vacuum suction component arranged on one side of the rotary evaporator main body. The vacuum suction assembly comprises an air cylinder, a supporting plate is arranged on a telescopic shaft of the air cylinder, a vacuum pump is fixedly installed on the upper surface of the supporting plate, a suction pipe is fixedly installed at the suction end of the vacuum pump, the suction pipe is located in the exhaust pipe and matched with the exhaust pipe in an inserted connection mode, and the exhaust pipe is sleeved with a sealing ring. The air cylinder is fixedly installed on the bottom plate, and a left guide rail and a right guide rail which are symmetrical are fixedly installed on the front side face of the bottom plate. The utility model is convenient for vacuum suction operation, is not easy to leak, and is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary evaporators, in particular to a vacuum device dedicated to medium and large rotary evaporators. Background Art

[0002] Medium and large rotary evaporators are an important chemical laboratory equipment, mainly used to study compounds in organic solvents and realize the functions of material separation and concentration. The basic principle is to use the free diffusion of thermal motion of gas molecules and the physical process of thermal evaporation to evaporate liquid substances into gaseous state. There are many types of medium and large rotary evaporators on the market. When in use, the evaporation operation is generally performed by heating in a heating bath.

[0003] Since evaporation is a phase change process in which a substance is transformed from a liquid to a gas, under vacuum conditions, the boiling point of the substance will also decrease accordingly due to the decrease in pressure, which makes the evaporation process easier to carry out. However, most of the common medium and large rotary evaporators lack vacuum devices and cannot achieve vacuum suction operations, which is not conducive to promoting the smooth progress of the evaporation process. In addition, although some medium and large rotary evaporators are equipped with vacuum devices and can complete vacuum suction operations, since the rotary evaporator needs to rotate, the pipe connection parts on it are generally connected by rotating connection. Pipe parts connected by rotating are prone to leakage, affecting the use effect. In view of this, we propose a vacuum device dedicated to medium and large rotary evaporators. Utility Model Content

[0004] The purpose of the utility model is to provide a vacuum device dedicated to medium and large rotary evaporators to solve the defects mentioned in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A vacuum device specially used for medium and large rotary evaporators comprises a rotary evaporator main body, an exhaust pipe is fixedly mounted on the tube body of the rotary evaporator main body, an electromagnetic valve is fixedly mounted on the exhaust pipe, a vacuum suction assembly is arranged on one side of the rotary evaporator main body, the vacuum suction assembly comprises a cylinder, a support plate is arranged on the telescopic shaft of the cylinder, a vacuum pump is fixedly mounted on the upper surface of the support plate, a suction pipe is fixedly mounted on the suction end of the vacuum pump, the suction pipe is located in the exhaust pipe and is plugged and matched with the exhaust pipe.

[0007] Preferably, a limit ring is fixedly installed on the exhaust pipe, an outer sealing sleeve is fixedly installed on the end tube body of the suction pipe, and the outer sealing sleeve is sleeved on the exhaust pipe, so that the outer sealing sleeve is sleeved on the exhaust pipe to achieve a sealing effect.

[0008] Preferably, a sealing ring is sleeved on the exhaust pipe, and the outer sealing sleeve presses the sealing ring against the front side surface of the limiting ring, so as to utilize the sealing ring to achieve a further sealing effect.

[0009] Preferably, a steel plate is fixedly mounted on the end of the telescopic shaft of the cylinder, and the support plate is fixedly mounted on the steel plate by a plurality of fastening bolts, so that the fixed mounting operation of the support plate is convenient.

[0010] Preferably, the vacuum suction assembly further comprises a bottom plate, and the cylinder is fixedly mounted on the bottom plate, so that the bottom plate is used to support the cylinder.

[0011] Preferably, two left and right symmetrical guide rails are fixedly installed on the front side surface of the base plate, and a slide groove is provided in the guide rail. Two left and right symmetrical guide plates are fixedly installed on the bottom surface of the support plate. The guide plates are located in the slide grooves and are slidably connected to the slide grooves, thereby guiding the movement of the support plate.

[0012] Preferably, the size of the guide plate is matched with the size of the slide groove for stabilizing the sliding operation.

[0013] Preferably, two symmetrical left and right protrusions are fixedly mounted on both front and rear side surfaces of the guide rail, and the protrusions are fixedly mounted on the external frame by a plurality of fastening bolts, so as to facilitate fixing of the protrusions and achieve the effect of fixing the guide rail.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model ensures that when in use, the cylinder can be used to drive the suction pipe to be inserted into the exhaust pipe, and then the vacuum pump can be used to perform the suction operation, so that the main body of the rotary evaporator is in a vacuum environment. In addition, after the suction is completed, the solenoid valve is closed. At this time, the suction pipe is pulled out and retreated a certain distance, so that the suction pipe does not affect the normal rotation operation of the main body of the rotary evaporator. It is specially used for medium and large rotary evaporators, and is easy to suck to a vacuum and not easy to leak.

[0016] 2. The utility model provides a limit ring, a sealing ring and an outer sealing sleeve, and utilizes the outer sealing sleeve to abut against the sealing ring to achieve a further sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the vacuum suction assembly of the utility model;

[0021] Figure 5 It is a schematic diagram of the explosion structure of the vacuum suction component of the utility model.

[0022] The meaning of each number in the figure is:

[0023] 1. Rotary evaporator body; 10. Exhaust pipe; 11. Solenoid valve; 12. Limiting ring; 13. Sealing ring;

[0024] 2. Vacuum suction assembly; 20. Bottom plate; 21. Cylinder; 211. Steel plate; 22. Guide rail; 221. Slide groove; 222. Bump; 23. Support plate; 231. Guide plate; 24. Vacuum pump; 25. Suction pipe; 26. External sealing sleeve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 5 The utility model provides a technical solution: a vacuum device dedicated to a medium-to-large rotary evaporator, comprising a rotary evaporator body 1, an exhaust pipe 10 is fixedly installed on the tube body of the rotary evaporator body 1, and a solenoid valve 11 is fixedly installed on the exhaust pipe 10, and the solenoid valve 11 is used to control the opening and closing operation of the exhaust pipe 10;

[0027] Specifically, a vacuum suction assembly 2 is provided on one side of the rotary evaporator body 1, and the vacuum suction assembly 2 includes a cylinder 21. A support plate 23 is provided on the telescopic shaft of the cylinder 21. A vacuum pump 24 is fixedly installed on the upper surface of the support plate 23. A suction pipe 25 is fixedly installed at the suction end of the vacuum pump 24. The suction pipe 25 is located in the exhaust pipe 10 and is plugged into and matched with the exhaust pipe 10, so that the suction pipe 25 can be inserted into the exhaust pipe 10 and the vacuum pump 24 can be used to perform the suction operation. After the suction is completed, the cylinder 21 is used to work to drive the suction pipe 25 to be pulled out, so that the suction pipe 25 will not affect the normal rotation operation of the rotary evaporator body 1, and it is specially used for medium and large rotary evaporators.

[0028] In this embodiment, a limit ring 12 is fixedly installed on the exhaust pipe 10, and an outer sealing sleeve 26 is fixedly installed on the end tube body of the suction pipe 25. The outer sealing sleeve 26 is sleeved on the exhaust pipe 10, so that the outer sealing sleeve 26 is sleeved on the exhaust pipe 10 to achieve a sealing effect; a sealing ring 13 is sleeved on the exhaust pipe 10, and the outer sealing sleeve 26 presses the sealing ring 13 against the front side of the limit ring 12, so that the sealing ring 13 is further sealed.

[0029] Specifically, a steel plate 211 is fixedly mounted on the end of the telescopic shaft of the cylinder 21 , and the support plate 23 is fixedly mounted on the steel plate 211 by a plurality of fastening bolts, so that the fixed mounting operation of the support plate 23 is convenient.

[0030] Furthermore, the vacuum suction assembly 2 also includes a bottom plate 20 , and the cylinder 21 is fixedly mounted on the bottom plate 20 , so that the bottom plate 20 can be used to support the cylinder 21 .

[0031] In addition, two symmetrical left and right guide rails 22 are fixedly installed on the front side surface of the base plate 20, and a slide groove 221 is provided in the guide rail 22. Two symmetrical left and right guide plates 231 are fixedly installed on the bottom surface of the support plate 23. The guide plates 231 are located in the slide groove 221 and are slidably connected to the slide groove 221, thereby guiding the movement of the support plate 23. The size of the guide plate 231 is adapted to the size of the slide groove 221 for stable sliding operation.

[0032] It is worth noting that two symmetrical left and right protrusions 222 are fixedly installed on the front and rear side surfaces of the guide rail 22. The protrusions 222 are fixedly installed on the external frame by multiple fastening bolts, which facilitates the fixing of the protrusions 222 and achieves the effect of fixing the guide rail 22.

[0033] When the vacuum device dedicated to the medium and large rotary evaporator of the utility model is used, the cylinder 21 is first started and made to work. When the cylinder 21 works, the telescopic shaft on it extends to drive the support plate 23, the vacuum pump 24 and the suction pipe 25 to move forward, and the suction pipe 25 is inserted into the exhaust pipe 10. At the same time, the outer sealing sleeve 26 is sleeved on the suction pipe 25. At this time, the outer sealing sleeve 26 presses the sealing ring 13 against the front side of the limit ring 12, and then the solenoid valve 11 is opened, and then the vacuum pump 24 is connected to the external power supply and made to work. When the vacuum pump 24 works, the internal air is extracted outward, so that the rotary evaporator body 1 is in a vacuum environment;

[0034] After the suction is completed, the solenoid valve 11 is closed, and the cylinder 21 is started and made to work. When the cylinder 21 works, the telescopic shaft thereon shortens to drive the support plate 23 and the vacuum pump 24 to move backward. At this time, the suction pipe 25 is pulled out from the exhaust pipe 10, so that the suction pipe 25 will not affect the normal rotation of the rotary evaporator body 1, and it is dedicated to medium and large rotary evaporators.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A vacuum device for medium-to-large rotary evaporators, comprising a rotary evaporator body (1), characterized in that: An exhaust pipe (10) is fixedly mounted on the tube body of the rotary evaporator main body (1), and an electromagnetic valve (11) is fixedly mounted on the exhaust pipe (10). A vacuum suction assembly (2) is arranged on one side of the rotary evaporator main body (1), and the vacuum suction assembly (2) comprises a cylinder (21), a support plate (23) is arranged on the telescopic shaft of the cylinder (21), a vacuum pump (24) is fixedly mounted on the upper surface of the support plate (23), and a suction pipe (25) is fixedly mounted on the suction end of the vacuum pump (24), and the suction pipe (25) is located in the exhaust pipe (10) and is plugged and matched with the exhaust pipe (10).

2. The vacuum device dedicated to medium and large rotary evaporators according to claim 1, characterized in that: A limiting ring (12) is fixedly mounted on the exhaust pipe (10), an outer sealing sleeve (26) is fixedly mounted on the end tube body of the suction pipe (25), and the outer sealing sleeve (26) is sleeved on the exhaust pipe (10).

3. The vacuum device dedicated to medium and large rotary evaporators according to claim 2, characterized in that: A sealing ring (13) is sleeved on the exhaust pipe (10), and the outer sealing sleeve (26) presses the sealing ring (13) against the front side surface of the limiting ring (12).

4. The vacuum device for medium and large rotary evaporators according to claim 1, characterized in that: A steel plate (211) is fixedly mounted on the end of the telescopic shaft of the cylinder (21), and the support plate (23) is fixedly mounted on the steel plate (211) by means of a plurality of fastening bolts.

5. The vacuum device dedicated to a medium-to-large rotary evaporator according to claim 1, characterized in that: The vacuum suction assembly (2) further comprises a base plate (20), and the cylinder (21) is fixedly mounted on the base plate (20).

6. The vacuum device for medium-to-large rotary evaporators according to claim 5, characterized in that: Two mutually symmetrical guide rails (22) are fixedly mounted on the front side of the bottom plate (20), and a slide groove (221) is arranged in the guide rail (22). Two mutually symmetrical guide plates (231) are fixedly mounted on the bottom surface of the support plate (23), and the guide plates (231) are located in the slide groove (221) and are slidably connected to the slide groove (221).

7. The vacuum device for medium-to-large rotary evaporators according to claim 6, characterized in that: The size of the guide plate (231) is matched with the size of the slide groove (221) for stable sliding operation.

8. The vacuum device dedicated to medium and large rotary evaporators according to claim 7, characterized in that: Two mutually symmetrical left and right protrusions (222) are fixedly mounted on both the front and rear side surfaces of the guide rail (22), and the protrusions (222) are fixedly mounted on the external frame body by means of a plurality of fastening bolts.

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