Rotary evaporator

Abstract

The utility model discloses a rotary evaporator which comprises a support, a collecting bottle is installed on the support, a first condensation pipe is installed above the collecting bottle, a communicating pipe penetrates through the front end of the first condensation pipe, a feeding pipe is installed at the front end of the outer wall of the communicating pipe, a second condensation pipe is installed above the first condensation pipe, and a circulating liquid conveying box is installed on one side of the outer wall of the support. Conveying pipes penetrate through the top end and the bottom end of the outer wall of one side of the circulating liquid conveying box; when the motor is started, the bevel gear rotates, by arranging a connecting structure between the bevel gear and the gear ring, the rotating bevel gear can drive the guide pipe on the inner wall of the gear ring to rotate together, at the moment, the evaporation bottle installed in the inflatable rubber ring also rotates along with the bevel gear, and therefore the requirement for rotary evaporation is met; by arranging a simple connection mode between the evaporation bottle and the inflatable rubber ring, the disassembly and assembly steps of the evaporation bottle are more convenient and quicker, so that not only is the operation of a worker facilitated, but also the extraction work can be normally carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporation equipment, in particular to a rotary evaporator. Background Art

[0002] A rotary evaporator is a laboratory device primarily used for evaporating and concentrating solutions under reduced pressure. It consists of a rotatable evaporating flask, a condenser, a receiving flask, and a vacuum pump. When in use, the solution to be treated is placed in the evaporating flask, which is rotated to form a thin film on the flask wall, thereby accelerating the evaporation process. Rotary evaporators are widely used in the chemical, pharmaceutical, and food industries.

[0003] When the existing rotary evaporator is in use, as the solution in the evaporating flask gradually evaporates, in order to prevent the evaporating flask from drying out, the staff needs to stay by the evaporating flask to observe or frequently check the evaporation situation of the evaporating flask, which is very troublesome. Based on these problems, Chinese patent CN221491459U discloses a rotary evaporator. When in use, the water bath is driven up by an electric push rod so that the lower end of the evaporating flask is set in the water of the water bath without contacting the water bath. After evaporation, the solution in the evaporating flask turns into steam and enters the condenser through the connecting pipe. After condensation in the condenser, it flows into the collection tank. As the solution in the evaporating flask gradually evaporates, the suspended block moves downward. When gravity appears on the pressure sensor, the controller controls the electric push rod to drive the water bath to descend to prevent the evaporating flask from drying out. At the same time, a buzzer alarm sounds an alarm to remind the staff.

[0004] The evaporating flask in the rotary evaporator needs to be rotated. The evaporating flask in this rotary evaporator cannot rotate, so it cannot meet the needs of rotary evaporation. At the same time, the evaporating flask is fixed on the connecting pipe, so the staff cannot disassemble and replace the evaporating flask in time, which affects the normal progress of the extraction work. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions.

[0007] A rotary evaporator comprises a bracket, a collecting bottle is mounted on the bracket, a first condenser is mounted above the collecting bottle, a connecting pipe is passed through the front end of the first condenser, a feeding pipe is mounted on the front end of the outer wall of the connecting pipe, a second condenser is mounted above the first condenser, a circulating liquid delivery box is mounted on one side of the outer wall of the bracket, delivery pipes are passed through the top and bottom ends of the outer wall of one side of the circulating liquid delivery box, two groups of delivery pipes are provided, the ends of the delivery pipes are plugged into the top and bottom of the rear end of the first condenser, a heating box is mounted on the other side of the outer wall of the bracket, a water bath that can move up and down is mounted on the inner wall of the heating box, a rotating drum assembly is mounted on the front end of the bracket, a motor assembly is mounted on the top of the rotating drum assembly, and a rotatable evaporating flask is mounted on one end of the inner wall of the rotating drum assembly.

[0008] As a further description of the above technical solution:

[0009] A control panel is installed at one end of the top of the bracket, and a vacuum gauge is installed at the other end of the top of the bracket.

[0010] As a further description of the above technical solution:

[0011] The drum assembly includes a drum shell, a first outer ring, a hollow shaft, a guide tube, an inflatable rubber ring, an inflatable tube, a gear ring, a rotating ring and a second outer ring. The motor assembly includes a motor and a bevel gear. The front end of the bracket is fixedly connected to the rear end of the drum shell. The top end of the drum shell is penetrated by a motor. The movable end of the motor extends into the interior of the drum shell. The movable end of the motor is rotatably connected to the bevel gear.

[0012] As a further description of the above technical solution:

[0013] One end of the inner wall of the drum shell is fixedly connected to a first outer ring, the inner wall of the first outer ring is rotatably connected to a hollow shaft, and the inner wall of the hollow shaft is fixedly connected to a guide tube.

[0014] As a further description of the above technical solution:

[0015] One end of the inner wall of the guide tube is fixedly connected with an inflatable rubber ring, the inner wall of the inflatable rubber ring is sleeved with the top end of the outer wall of the evaporating flask, and one end of the outer wall of the inflatable rubber ring is penetrated by an inflatable tube.

[0016] As a further description of the above technical solution:

[0017] A gear ring is fixedly connected to the center of the outer wall of the guide tube, and the tooth grooves on the outer wall of the gear ring are meshed with the gear teeth on the outer wall of the bevel gear.

[0018] As a further description of the above technical solution:

[0019] The top end of the outer wall of the guide tube is fixedly connected to a swivel, the other end of the inner wall of the drum shell is fixedly connected to a second outer ring, one end of the inner wall of the second outer ring is rotatably connected to the outer wall of the swivel, and the other end of the inner wall of the second outer ring is plugged into the bottom end of the outer wall of the feeding tube.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) When the motor is turned on, the bevel gear will rotate. By setting a connection structure between the bevel gear and the gear ring, the rotating bevel gear can drive the guide tube on the inner wall of the gear ring to rotate together. At this time, the evaporating flask installed in the inflatable rubber ring will also rotate together, thereby meeting the needs of rotary evaporation. By setting a simple connection method between the evaporating flask and the inflatable rubber ring, the disassembly and assembly steps of the evaporating flask are more convenient and quick, which not only facilitates the operation of the staff, but also allows the extraction work to proceed normally.

[0022] (2) By setting up an inflatable rubber ring, the evaporating flask can be fixed, and at the same time, the bottle mouth of the evaporating flask can be protected and the sealing performance can be improved. By using an inflatable tube and an external inflating pump or exhaust pump, the gas in the inflatable rubber ring can be replenished or discharged, and the clamping force of the evaporating flask can be adjusted. The second condenser can improve the condensation efficiency and ensure that the solvent in the steam can be fully recovered, thereby reducing solvent waste and environmental pollution. By increasing the condensation area and extending the condensation path, the second condenser can more effectively transfer the heat in the steam to the cooling medium, so that the steam can be quickly condensed into liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the utility model;

[0024] Figure 2 A three-dimensional diagram of the support structure in the present utility model;

[0025] Figure 3 This is a front view of the support structure of the present invention;

[0026] Figure 4 This is a front cross-sectional view of the connection structure between the motor assembly and the drum assembly in the present invention.

[0027] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0028] 1. Bracket; 2. Collecting bottle; 3. First condenser; 4. Connecting pipe; 5. Feeding pipe; 6. Second condenser; 7. Circulating liquid delivery box; 8. Delivery pipe; 9. Heating box; 10. Water bath; 11. Control panel; 12. Vacuum gauge; 13. Drum assembly; 131. Drum shell; 132. First outer ring; 133. Hollow shaft; 134. Guide pipe; 135. Inflatable rubber ring; 136. Inflating pipe; 137. Gear ring; 138. Rotating ring; 139. Second outer ring; 14. Motor assembly; 141. Motor; 142. Bevel gear; 15. Evaporating flask. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0032] Reference Figure 1 , which is a front view of a rotary evaporator disclosed in the present invention, including a bracket 1, on which a collecting bottle 2 is installed. The collecting bottle 2 is a container for collecting evaporated solvents or solutes in the rotary evaporator, and is made of high-quality glass or high-temperature resistant plastic to ensure stability and safety under high temperature, high pressure and corrosive environments. A first condenser 3 is installed above the collecting bottle 2. The first condenser 3 can condense the steam generated during the evaporation process back into a liquid state. In the rotary evaporator, the sample solution is placed in a special flask and heated by a heating source. As the temperature rises, the solvent in the sample begins to evaporate and form steam. The steam is then guided into the first condenser 3, rapidly condensed into a liquid state under the action of cooling water, and finally drips into the collecting bottle 2.

[0033] Reference Figure 1 and Figure 2, which is a front view of a rotary evaporator disclosed in the present invention and a three-dimensional view of the bracket structure. The front end of the first condenser tube 3 is penetrated by a connecting tube 4, and a feeding tube 5 is installed at the front end of the outer wall of the connecting tube 4. A second condenser tube 6 is installed above the first condenser tube 3. The second condenser tube 6 can improve the condensation efficiency and ensure that the solvent in the steam can be fully recovered, thereby reducing solvent waste and environmental pollution. By increasing the condensation area and extending the condensation path, the second condenser tube 6 can more effectively transfer the heat in the steam to the cooling medium, so that the steam is quickly condensed into liquid. A circulating liquid delivery box 7 is installed on one side of the outer wall of the bracket 1. The top and bottom ends of the outer wall of one side of the circulating liquid delivery box 7 are penetrated by delivery pipes 8. There are two groups of delivery pipes 8. The ends of the delivery pipes 8 are plugged into the top and bottom of the rear end of the first condenser tube 3. A heating box 9 is installed on the other side of the outer wall of the bracket 1. A water bath 10 that can move up and down is installed on the inner wall of the heating box 9. A control panel 11 is installed at one end of the top of the bracket 1, and a vacuum gauge 12 is installed at the other end of the top of the bracket 1.

[0034] Reference Figure 3 and Figure 4, which is a front view of the support structure in a rotary evaporator disclosed in the present invention and a front sectional view of the connection structure of the motor assembly and the drum assembly. The front end of the support 1 is fixedly connected to the drum shell 131. The top of the drum shell 131 is penetrated by a motor 141. The movable end of the motor 141 extends into the drum shell 131. The movable end of the motor 141 is rotatably connected to a bevel gear 142. One end of the inner wall of the drum shell 131 is fixedly connected to a first outer ring 132. The inner wall of the first outer ring 132 is rotatably connected to a hollow shaft 133. The inner wall of the hollow shaft 133 is fixedly connected to a guide tube 134. The guide tube One end of the inner wall of the inflatable rubber ring 134 is fixedly connected to an inflatable rubber ring 135, and the inner wall of the inflatable rubber ring 135 is sleeved with the evaporating flask 15. The height of the water bath 10 in the heating box 9 can be adjusted according to the height of the evaporating flask 15. An inflatable tube 136 runs through one end of the outer wall of the inflatable rubber ring 135. A gear ring 137 is fixedly connected to the center of the outer wall of the guide tube 134. The tooth groove of the outer wall of the gear ring 137 meshes with the gear teeth of the outer wall of the bevel gear 142. The top end of the outer wall of the guide tube 134 is fixedly connected to a rotating ring 138. The other end of the inner wall of the rotating drum shell 131 is fixedly connected to a second outer ring 139. One end of the inner wall of the second outer ring 139 is rotatably connected to the outer wall of the rotating ring 138, and the other end of the inner wall of the second outer ring 139 is plugged into the bottom end of the outer wall of the feeding tube 5. By arranging the rotating drum shell 131, the first outer ring 132, the hollow shaft 133, the guide tube 134, the inflatable rubber ring 135, the inflatable tube 136, the gear ring 137, the rotating ring 138 and the second outer ring 139, a rotating drum assembly 13 can be formed. By arranging the motor 141 and the bevel gear 142, a motor assembly 14 can be formed. When the motor 141 is turned on, the bevel gear 142 will rotate. By arranging the bevel gear 142 The connection structure between the gear ring 137 and the rotating bevel gear 142 drives the guide tube 134 on the inner wall of the gear ring 137 to rotate together. At this time, the evaporating flask 15 installed in the inflatable rubber ring 135 also rotates together. The inflatable rubber ring 135 can be used to fix the evaporating flask 15, while also protecting the bottle mouth of the evaporating flask 15 and improving the sealing effect. The inflation tube 136 and an external inflation pump or exhaust pump can be used to replenish or discharge the gas in the inflatable rubber ring 135, thereby adjusting the clamping force of the evaporating flask 15.

[0035] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A rotary evaporator comprising a support (1), characterized in that: A collecting bottle (2) is installed on the bracket (1), a first condensing tube (3) is installed above the collecting bottle (2), a connecting tube (4) is passed through the front end of the first condensing tube (3), a feeding tube (5) is installed at the front end of the outer wall of the connecting tube (4), a second condensing tube (6) is installed above the first condensing tube (3), a circulating liquid delivery box (7) is installed on one side of the outer wall of the bracket (1), a delivery tube (8) is passed through the top and bottom ends of the outer wall of one side of the circulating liquid delivery box (7), and the delivery tube (8) is installed on the top and bottom ends of the outer wall of the circulating liquid delivery box (7). (8) There are two groups in total, the ends of the delivery pipes (8) are plugged into the upper and lower parts of the rear end of the first condenser (3), a heating box (9) is installed on the other side of the outer wall of the bracket (1), a water bath (10) that can move up and down is installed on the inner wall of the heating box (9), a rotating drum assembly (13) is installed at the front end of the bracket (1), a motor assembly (14) is installed at the top end of the rotating drum assembly (13), and a rotatable evaporating flask (15) is installed at one end of the inner wall of the rotating drum assembly (13).

2. A rotary evaporator according to claim 1, characterized in that: A control panel (11) is installed at one end of the top of the bracket (1), and a vacuum gauge (12) is installed at the other end of the top of the bracket (1).

3. A rotary evaporator according to claim 1, characterized in that: The drum assembly (13) comprises a drum shell (131), a first outer ring (132), a hollow shaft (133), a guide tube (134), an inflatable rubber ring (135), an inflatable tube (136), a gear ring (137), a rotating ring (138) and a second outer ring (139); the motor assembly (14) comprises a motor (141) and a bevel gear (142); the front end of the bracket (1) is fixedly connected to the rear end of the drum shell (131); the top end of the drum shell (131) is penetrated by the motor (141); the movable end of the motor (141) extends into the interior of the drum shell (131); and the movable end of the motor (141) is rotatably connected to the bevel gear (142).

4. A rotary evaporator according to claim 3, characterized in that: One end of the inner wall of the drum shell (131) is fixedly connected to a first outer ring (132), the inner wall of the first outer ring (132) is rotatably connected to a hollow shaft (133), and the inner wall of the hollow shaft (133) is fixedly connected to a guide tube (134).

5. A rotary evaporator according to claim 3, characterized in that: An inflatable rubber ring (135) is fixedly connected to one end of the inner wall of the guide tube (134), the inner wall of the inflatable rubber ring (135) is sleeved with the top end of the outer wall of the evaporating flask (15), and an inflatable tube (136) is passed through one end of the outer wall of the inflatable rubber ring (135).

6. A rotary evaporator according to claim 3, characterized in that: A gear ring (137) is fixedly connected to the center of the outer wall of the guide tube (134), and the tooth grooves on the outer wall of the gear ring (137) are meshed with the gear teeth on the outer wall of the bevel gear (142).

7. A rotary evaporator according to claim 3, characterized in that: The top end of the outer wall of the guide tube (134) is fixedly connected to a swivel (138), and the other end of the inner wall of the drum shell (131) is fixedly connected to a second outer ring (139). One end of the inner wall of the second outer ring (139) is rotatably connected to the outer wall of the swivel (138), and the other end of the inner wall of the second outer ring (139) is plugged into the bottom end of the outer wall of the feeding tube (5).

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