Rotary evaporator

Abstract

The utility model provides a rotary evaporator which comprises a rack, a machine head, a heating pot, a glass shaft, a condenser, an evaporation bottle and a collection bottle, and further comprises a clamping piece installed at the end, away from the condenser, of the glass shaft, the clamping piece is used for clamping evaporation bottles of different specifications and calibers, and the clamping piece comprises an installation plate fixedly connected to the end, away from the condenser, of the glass shaft; the mounting ring is fixedly connected to the side, away from the condenser, of the mounting plate; the clamping plates are slidably connected to the mounting plate in the radial direction of the mounting ring, the multiple clamping plates are distributed around the axis of the mounting ring in a circumferential array mode, and the clamping plates are used for clamping an evaporation bottle; and the adjusting mechanism is mounted on the mounting plate and used for controlling the clamping plate to move in the radial direction of the mounting ring. According to the rotary evaporator, evaporation flasks with different calibers can be clamped, and the use universality of the rotary evaporator is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of evaporator, in particular to a rotary evaporator. BACKGROUND

[0002] The rotary evaporator, also called rotary evaporator, is a commonly used instrument and equipment in chemical laboratories, mainly used for continuous distillation of volatile solvents under reduced pressure. The existing rotary evaporator includes a frame, a machine head, a condenser, an evaporation flask, a collection flask, a heating pot, a control device and a glass shaft. The glass shaft is installed in the machine head, and the machine head has a driving member for driving the glass shaft to rotate. The condenser is installed on one side of the machine head, and one end of the glass shaft extends into the condenser. The evaporation flask is fixed to the end of the glass shaft away from the condenser, and the collection flask is fixed to the bottom of the condenser. When the rotary evaporator is used, the glass shaft is driven to rotate by the machine head, thereby driving the evaporation flask to rotate. The liquid in the pot is heated by the heating pot, thereby efficiently heating the rotating evaporation flask. The evaporated gas enters the condenser after passing through the glass shaft, is condensed and collected in the collection flask.

[0003] Although the rotary evaporator on the market can complete the distillation of liquid, the existing rotary evaporator can only install a single size and diameter evaporation flask during installation. Once the diameter of the evaporation flask changes, it cannot be installed, so the existing rotary evaporator has poor versatility. CONTENT OF THE INVENTION

[0004] In order to solve at least one technical problem mentioned in the background art, the purpose of the present application is to provide a rotary evaporator which can clamp evaporation flasks of different diameters, thereby improving the versatility of the rotary evaporator.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A rotary evaporator, comprising: a frame, a machine head, a heating pot, a glass shaft, a condenser, an evaporation flask, a collection flask, and further comprising:

[0007] A clamping member is installed at the end of the glass shaft away from the condenser, and the clamping member is used to clamp evaporation flasks of different sizes and diameters. The clamping member comprises:

[0008] An installation plate is fixed to the end of the glass shaft away from the condenser;

[0009] An installation ring is fixed to the side of the installation plate away from the condenser;

[0010] A clamping plate is connected to the installation plate in a radial sliding manner along the installation ring. There are a plurality of clamping plates, and the plurality of clamping plates are distributed in a circular array around the axis of the installation ring. The clamping plate is used to clamp the evaporation flask;

[0011] An adjusting mechanism is mounted on the mounting plate, and is used to control the radial movement of the clamping plate along the mounting ring.

[0012] In an embodiment, the adjusting mechanism comprises:

[0013] A threaded sleeve is rotatably connected to the side wall of the mounting ring via a bearing;

[0014] An adjusting screw is fixed to the clamping plate at one end, and is threadedly connected to the threaded sleeve;

[0015] A driving assembly is used to control the rotation of the threaded sleeve.

[0016] In an embodiment, the driving assembly comprises:

[0017] A support ring is coaxially rotatably connected to the outer periphery of the mounting ring via a bearing;

[0018] A driving bevel gear is fixed to the side surface of the support ring;

[0019] A driven bevel gear is coaxially fixed to the outer periphery of the threaded sleeve, and is meshingly connected to the driving bevel gear.

[0020] In an embodiment, the driving assembly further comprises:

[0021] An adjusting worm gear is coaxially fixed to the outer periphery of the support ring;

[0022] An adjusting worm is rotatably connected to the mounting plate, and is meshingly connected to the adjusting worm gear.

[0023] In an embodiment, the clamping plate comprises:

[0024] A connecting plate is fixed to the adjusting screw;

[0025] A rubber block is fixed to the side of the connecting plate away from the adjusting screw.

[0026] In an embodiment,

[0027] Further comprising an inner wall support, which comprises:

[0028] A connecting ring is fixed to the middle part of the mounting plate,

[0029] A plurality of elastic stop pieces are circumferentially arranged on the side of the connecting ring away from the mounting plate, and abut against the inner wall of the evaporating bottle.

[0030] In an embodiment,

[0031] The elastic stop pieces are collectively convexly arc-shaped.

[0032] In an embodiment,

[0033] It also includes a flexible sealing rubber sleeve, one end of which is fixed to the connecting ring, and the other end passes through the inner wall of the connecting ring and the elastic baffle in sequence and is fixed to the outer wall of the elastic baffle. The flexible sealing rubber sleeve is in contact with the inner wall of the evaporation flask.

[0034] Compared with the prior art, this application has the following advantages:

[0035] By setting clamping components between the head and the evaporator, the evaporator mouth only needs to be placed inside the mounting ring. Then, the adjusting mechanism controls all the clamping plates to move synchronously closer to the evaporator. Multiple clamping plates arranged in a circumferential array clamp and fix the outer wall of the evaporator. In this way, when the evaporator mouth diameter is different, the position of the clamping plates can be adjusted adaptively by adjusting the adjusting mechanism to achieve the clamping effect for evaporators with different mouth diameters, thus improving the overall versatility of the rotary evaporator.

[0036] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0037] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which:

[0038] In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0039] Figure 1 An isometric view of the overall structure of an embodiment of this application is shown;

[0040] Figure 2 A cross-sectional schematic diagram of the overall structure of an embodiment of this application is shown;

[0041] Figure 3 It shows Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0042] Figure 4 A schematic diagram of the structure of the inner wall support member according to an embodiment of this application is shown;

[0043] Figure 5 A schematic diagram of the structure of the clamping member according to an embodiment of this application is shown;

[0044] Figure 6 An exploded view of the clamping component according to an embodiment of this application is shown.

[0045] Explanation of the labels in the diagram:

[0046] 100. Frame; 110. Head unit; 120. Heating pot; 130. Evaporating flask; 140. Condenser; 150. Collection bottle; 160. Glass shaft; 170. Controller;

[0047] 200. Clamping component; 210. Mounting plate; 220. Mounting ring; 230. Clamping plate; 231. Connecting plate; 232. Rubber block; 240. Adjusting mechanism; 241. Threaded sleeve; 242. Adjusting screw; 243. Drive assembly; 2431. Support ring; 2432. Drive bevel gear; 2433. Driven bevel gear; 2434. Adjusting worm gear; 2435. Adjusting worm; 24351. Adjusting handle;

[0048] 300. Inner wall support; 310. Connecting ring; 320. Elastic baffle;

[0049] 400. Flexible sealing rubber sleeve. Detailed Implementation

[0050] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] To better understand the design intent of the embodiments of this application, the existing rotary evaporator will be described again here. The existing rotary evaporator includes: a frame, a head, a heating pot 1, an evaporating flask, a condenser, a collecting bottle, a glass shaft, and a control device. The glass shaft is installed inside the head, which contains a drive component to rotate the glass shaft. The condenser is installed on one side of the head, and one end of the glass shaft extends into the condenser. The evaporating flask is fixed to the end of the glass shaft away from the condenser by a bottle clamp. The collecting bottle is fixed to the bottom of the condenser. Here, in the existing rotary evaporator, the evaporating flask and glass shaft, as well as the collecting bottle and condenser, are all fixed by bottle clamps. When the rotary evaporator is in use, the head drives the glass shaft to rotate, which in turn drives the evaporating flask to rotate. The heating pot heats the liquid inside, thereby efficiently heating the rotating evaporating flask. The evaporated gas passes through the glass shaft and enters the condenser for condensation, then is collected in the collecting bottle.

[0052] However, since the glass shaft has a fixed size, it is generally only suitable for connecting to evaporation flasks of a single diameter. If the evaporation flask is damaged, lost, or otherwise has other problems, it is not possible to find an evaporation flask of another diameter to replace it, resulting in poor versatility.

[0053] Reference Figure 1 - Figure 6 This application provides a rotary evaporator comprising a frame 100, a head 110 and a heating pot 120 mounted on the frame 100, and a condenser 140 mounted on one side of the head. A collection bottle 150 is mounted at the bottom of the condenser 140. A glass shaft 160 is mounted inside the head 110, with one end extending into the condenser 140 and a clamping member 200 mounted at the other end. To facilitate control of the heating pot 120 and the head 110, a controller 170 is also mounted on the frame 100. Furthermore, since evaporation flasks 130 with different mouth diameters may be used in experiments, the clamping member 200 in this embodiment is adjustable to accommodate evaporation flasks 130 of various sizes, ensuring the evaporator can accommodate them.

[0054] Specifically, refer to Figure 3 , Figure 5 and Figure 6 The clamping component 200 includes a mounting plate 210 fixed to the end of the glass shaft 160 away from the condenser 140. During the experiment, the mounting plate 210 rotates synchronously with the glass shaft 160. A mounting ring 220 is fixed to the side of the mounting plate 210 away from the condenser 140. Multiple clamping plates 230 are slidably connected to the mounting plate 210, and these clamping plates 230 are arranged in a circumferential array about the axis of the mounting ring 220. In addition, the sliding path of the clamping plates 230 is along the radial direction of the mounting ring 220. The evaporation flask 130 can be clamped using these clamping plates 230. An adjustment mechanism 240 is also provided on the mounting plate 210, which can control all the clamping plates 230 to move synchronously closer to or away from the evaporation flask 130.

[0055] Continue to refer to Figure 3 , Figure 5 and Figure 6 The adjusting mechanism 240 includes a threaded sleeve 241 rotatably connected to the side wall of the mounting ring 220 via a bearing. An adjusting screw 242 is coaxially threaded inside the threaded sleeve 241, and one end of the adjusting screw 242 near the axis of the mounting ring 220 is fixed to the clamping plate 230. It should be noted that each clamping plate 230 is equipped with an adjusting screw 242 of the same specification. The drive assembly 243 synchronously controls the rotation of all the threaded sleeves 241.

[0056] Furthermore, refer to Figure 3 , Figure 5 and Figure 6The drive assembly 243 includes a support ring 2431, a drive bevel gear 2432, a driven bevel gear 2433, an adjusting worm gear 2434, and an adjusting worm 2435. The support ring 2431 is rotatably connected to the outer periphery of the mounting ring 220 via bearings. The drive bevel gear 2432 is fixedly connected to the side of the support ring 2431. A driven bevel gear 2433 is coaxially fixedly connected to the outer periphery of each threaded sleeve 241, and the driven bevel gear 2433 meshes with the drive bevel gear 2432. An adjusting worm gear 2434 is also coaxially fixedly connected to the outer periphery of the support ring 2431. An adjusting worm 2435 is rotatably connected to the mounting plate 210, and the worm meshes with the adjusting worm gear 2434.

[0057] The following describes the specific application scenario. When clamping the evaporator 130, the mouth of the evaporator 130 is inserted into the mounting ring 220, and then the adjusting worm 2435 is rotated. In this embodiment, an adjusting handle 24351 is installed at the shaft end of the adjusting worm 2435 to facilitate the rotation of the adjusting worm 2435. Through the meshing of the adjusting worm 2435 and the adjusting worm wheel 2434, the support ring 2431 is driven to rotate. Furthermore, under the meshing of the driving bevel gear 2432 and the driven bevel gear 2433, all the threaded sleeves 241 are driven to rotate synchronously. Since the adjusting screw 242 and the threaded sleeve 241 are threadedly connected, the adjusting screw 242 and the clamping plate 230 are fixedly connected, and the clamping plate 230 and the mounting plate 210 are slidably connected, the sliding fit between the mounting plate 210 and the clamping plate 230 can restrict the rotation of the adjusting screw 242. Furthermore, when the threaded sleeve 241 rotates, the threaded fit between the threaded sleeve 241 and the adjusting screw 242 causes the adjusting screw 242 and the clamping plate 230 to move radially along the mounting ring 220 simultaneously. Thus, all the clamping plates 230 move synchronously closer to the outer wall of the evaporator 130. Continuously rotating the adjusting worm 2435 until the clamping plates 230 clamp the evaporator 130 completes the clamping of the evaporator 130. The self-locking property of the meshing between the adjusting worm wheel 2434 and the adjusting worm 2435 also ensures that the clamping plates 230 will not move after the evaporator 130 is clamped, thus ensuring the stability of the clamping of the evaporator 130. Since multiple clamping plates 230 can move radially along the mounting ring 220, they can accommodate evaporation flasks 130 with different mouth diameters, improving the versatility of the evaporator. Moreover, during clamping, only the adjusting worm gear 2435 needs to be rotated to control all clamping plates 230 to move synchronously, thus achieving the clamping operation, which is also relatively convenient.

[0058] Reference Figure 3 , Figure 5 and Figure 6To ensure stable clamping of the evaporating flask 130 without damaging it, this embodiment of the application designs the clamping plate 230 as a combination of a connecting plate 231 and a rubber block 232. The connecting plate 231 is fixedly connected to the end of the adjusting screw 242, and the rubber block 232 is fixedly connected to the side of the connecting plate 231 away from the adjusting screw 242. Thus, when clamping the evaporating flask 130, the rubber block 232 abuts against the outer wall of the evaporating flask 130. Since the rubber block 232 has a certain degree of flexibility and can increase the friction intensity between it and the evaporating flask 130, this can not only improve the clamping stability of the evaporating flask 130, but also reduce the problem of hard damage to the evaporating flask 130 during the clamping process, thereby improving the safety of the experimental operation.

[0059] Reference Figure 2 - Figure 6 To further improve the clamping stability of the evaporation flask 130, this embodiment also includes an inner wall support 300, which is fixedly connected to the connecting ring 310 in the middle of the mounting plate 210. It should be noted that the connecting ring 310 communicates with the glass shaft 160. Multiple elastic baffles 320 are circumferentially arrayed and fixedly connected to the side of the connecting ring 310 away from the mounting plate 210, and these elastic baffles 320 abut against the inner wall of the evaporation flask 130. Furthermore, to facilitate smoother insertion of the elastic baffles 320 from the mouth of the evaporation flask 130 during installation, this application designs the elastic baffles 320 as an outwardly convex arc shape, with the smallest radius of the projection of the end of the elastic baffle 320 away from the connecting ring 310 onto the connecting ring 310.

[0060] In one embodiment, depending on the specific application scenario, when installing the evaporation flask 130, the mouth of the evaporation flask 130 is inserted into the end of the elastic baffle 320. As the evaporation flask 130 is pushed into the mounting ring 220, the inner wall of the evaporation flask 130 compresses the elastic baffle 320, causing it to deform and press tightly against the inner wall of the evaporation flask 130. The cooperation of multiple elastic baffles 320 provides a certain degree of support for the evaporation flask 130. Then, the clamp 230 is used to fix the outer wall of the evaporation flask 130. This combination of internal and external support improves the clamping stability of the evaporation flask 130, providing a stable support foundation for subsequent experiments. In addition, the inner wall support 300 also facilitates the accurate placement of the mouth of the evaporation flask 130.

[0061] Reference Figure 3 , Figure 4 and Figure 6To improve the sealing performance of the evaporation flask 130, this embodiment of the application also provides a flexible sealing rubber sleeve 400. One end of the flexible sealing rubber sleeve 400 is fixed to the connecting ring 310, and the other end passes through the inner wall of the connecting ring 310 and the elastic baffle 320 in sequence and is then fixed to the outer wall of the elastic baffle 320. The flexible sealing rubber sleeve 400 fits snugly against the inner wall of the evaporation flask 130. In this way, the gas passage between the evaporation flask 130 and the glass shaft 160 can be better sealed, and there will be no steam leakage problem, which improves the stability and reliability of the evaporator.

[0062] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this application can be achieved, and this is not limited herein.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotary evaporator, comprising: The machine comprises a frame (100), a head (110), a heating pot (120), a glass shaft (160), a condenser (140), an evaporating flask (130), and a collecting bottle (150), characterized in that it further includes: A clamping member (200) is installed at the end of the glass shaft (160) away from the condenser (140). The clamping member (200) is used to clamp evaporation flasks (130) of different sizes. The clamping member (200) includes: Mounting plate (210) is fixed to the end of glass shaft (160) away from condenser (140); Mounting ring (220) is fixed to the mounting plate (210) on the side away from the condenser (140); A clamp (230) is slidably connected to the mounting plate (210) along the mounting ring (220). There are multiple clamps (230), and the multiple clamps (230) are arranged in a circular array around the axis of the mounting ring (220). The clamps (230) are used to hold the evaporation flask (130). An adjustment mechanism (240) is mounted on a mounting plate (210) for controlling the radial movement of the clamping plate (230) along the mounting ring (220).

2. The rotary evaporator according to claim 1, characterized in that: The adjustment mechanism (240) includes: The threaded sleeve (241) is rotatably connected to the side wall of the mounting ring (220) via a bearing; An adjusting screw (242) is fixed at one end to a clamping plate (230), and the adjusting screw (242) is threadedly connected to a threaded sleeve (241); A drive assembly (243) is used to control the rotation of the threaded sleeve (241).

3. A rotary evaporator according to claim 2, characterized in that: The driving component (243) includes: The support ring (2431) is coaxially rotatably connected to the outer circumference of the mounting ring (220) via a bearing; The drive bevel gear (2432) is fixed to the side of the support ring (2431); The driven bevel gear (2433) is coaxially fixed to the outer periphery of the threaded sleeve (241), and the driven bevel gear (2433) meshes with the driving bevel gear (2432).

4. A rotary evaporator according to claim 3, characterized in that: The drive component (243) also includes: Adjust the worm gear (2434), which is coaxially fixed to the outer circumference of the support ring (2431); An adjusting worm (2435) is rotatably connected to a mounting plate (210), and the adjusting worm (2435) is meshed with an adjusting worm wheel (2434).

5. A rotary evaporator according to claim 2, characterized in that: The clamping plate (230) includes: The connecting plate (231) is fixedly connected to the adjusting screw (242); The rubber block (232) is fixed to the side of the connecting plate (231) away from the adjusting screw (242).

6. A rotary evaporator according to claim 1, characterized in that: It also includes an inner wall support (300), the inner wall support (300) comprising: The connecting ring (310) is fixed to the middle of the mounting plate (210). Multiple elastic baffles (320) are fixedly attached to the side of the connecting ring (310) away from the mounting plate (210) in a circumferential array. The elastic baffles (320) abut against the inner wall of the evaporation flask (130).

7. A rotary evaporator according to claim 6, characterized in that: The elastic baffle (320) is generally convex arc-shaped.

8. A rotary evaporator according to claim 7, characterized in that: It also includes a flexible sealing rubber sleeve (400), one end of which is fixed to the connecting ring (310), and the other end passes through the inner wall of the connecting ring (310) and the elastic baffle (320) in sequence and is then fixed to the outer wall of the elastic baffle (320). The flexible sealing rubber sleeve (400) is in contact with the inner wall of the evaporation flask (130).

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