Rotary evaporator with uniform heating function

Abstract

The utility model relates to a rotary evaporator capable of uniformly heating, which belongs to the technical field of rotary evaporators and comprises a base, a heating pot is fixed on the upper surface of the base, a heating mechanism for uniformly heating is arranged on the heating pot, and a mounting plate is fixed on the upper surface of the base. An adjusting mechanism for conveniently adjusting the height is arranged on the mounting plate, and a case is arranged on the front side of the mounting plate. According to the rotary evaporator capable of uniformly heating, water in a heating pot can be heated through cooperation of a first heating pipe, so that a solution in a rotary bottle can be conveniently subjected to water bath heating, a rotating rod and a rotating block can be driven to rotate through cooperation of a first motor, so that a heat preservation cover is driven to turn over, and the heat preservation cover is opened or closed; through cooperation of the second heating pipe, heating can be conducted through wind power of the air outlet pipe, hot air is transmitted to the exposed surface of the rotary bottle, and therefore the rotary bottle is heated evenly.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary evaporators, in particular to a rotary evaporator with uniform heating. Background Art

[0002] Rotary evaporator, also known as rotary evaporator, is an evaporation instrument widely used in laboratories. It is composed of a motor, a distillation flask, a heating pot, a condenser and other parts. It is mainly used for continuous distillation of volatile solvents under reduced pressure conditions and is used in chemistry, chemical industry, biomedicine and other fields.

[0003] For example, a rotary evaporator capable of uniform heating is disclosed in the Chinese utility model patent publication number (CN210786283U), which comprises a base, a supporting box body is fixed on the top of the base, guide rails are fixed on both ends of the top of the supporting box body, a slide bar is slidably arranged on the guide rail, the slide bar is fixed to the bottom of the motor box, a pulse cylinder is fixed at the top center of the supporting box body, the end of the piston rod of the pulse cylinder is fixedly connected to the bottom of the motor box through a connecting plate, a feed pipe is arranged in the motor box, a condenser is arranged at the left end of the feed pipe, a collecting bottle is arranged below the condenser, and a rotating bottle is arranged at the right end of the feed pipe. The rotating bottle is arranged in a water bath, a support frame is fixed at the bottom of the water bath, a rotating shaft is fixed at the center of the bottom of the support frame, the bottom end of the rotating shaft is inserted into the supporting platform and is rotatably connected to the bearing seat, the supporting platform is fixed to the side of the supporting box, a protective net is fixed inside the water bath, and a circulating water pump is fixed on the side of the water bath. This utility model solves the problem that the position of the rotating bottle in the water bath of the existing rotary evaporator is relatively fixed and the heating uniformity is poor. However, in this patent, when the rotating bottle rotates, a part of it is always kept in the water bath and a part of it is exposed to the outside, resulting in that the temperature of the rotating bottle body cannot be kept balanced, so that the extraction efficiency of the solution in the bottle is affected. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a rotary evaporator with uniform heating, which has the advantages of keeping the temperature of the bottle body of the rotating bottle balanced and allowing the solution in the bottle to be evenly heated. It solves the problem in the patent that when the rotating bottle rotates, a part of it is always kept in the water bath and a part is exposed to the outside, resulting in the temperature of the rotating bottle body being unable to remain balanced, thereby affecting the extraction efficiency of the solution in the bottle.

[0005] To achieve the above object, the utility model provides the following technical solution: a uniformly heated rotary evaporator, comprising a base, a heating pot is fixed on the upper surface of the base, a heating mechanism for uniform heating is arranged on the heating pot, a mounting plate is fixed on the upper surface of the base, an adjustment mechanism for convenient height adjustment is arranged on the mounting plate, and a chassis is arranged on the front side of the mounting plate;

[0006] The heating mechanism includes a first heating tube, which is fixed to the inner bottom wall of the heating pot, a temperature sensor is fixed to the inner side of the heating pot, a mounting block is fixed to the outer side of the heating pot, a first motor is fixed to the front side of the mounting block, an output shaft of the first motor passes through and extends to the rear side of the mounting block and is fixed with a rotating rod, a rotating block is fixed to the outer side of the rotating rod, a heat preservation cover is fixed to the upper surface of the rotating block, and a temperature balancing component is arranged on the heat preservation cover.

[0007] Furthermore, an air intake pipe is fixed to the left side of the chassis, the other end of the air intake pipe is connected to a cooling pipe, the bottom end of the cooling pipe is connected to a collecting bottle, a second motor is fixed to the left inner wall of the chassis, a driving gear is fixed to the output shaft of the second motor, a driven gear is meshed on the outer side of the driving gear, a connecting pipe is fixed on the inner side of the driven gear, one end of the connecting pipe is rotatably connected to the air intake pipe through a sealed bearing, the other end of the connecting pipe passes through and extends to the right side of the chassis, and is connected to a rotating bottle.

[0008] Furthermore, the number of the mounting blocks is two, and they are symmetrically distributed front to back about the central axis of the heating pot.

[0009] Furthermore, the temperature balancing component includes a fan, which is fixed to the upper surface of the heat preservation cover. The output end of the fan is connected to an air outlet pipe, the other end of the air outlet pipe passes through and extends to the interior of the heat preservation cover and is connected to an air nozzle, and a second heating tube is fixed to the inner side of the air outlet pipe.

[0010] Furthermore, the number of the fans is no less than two and they are evenly distributed on the upper surface of the heat preservation cover.

[0011] Furthermore, the adjustment mechanism includes a third motor, the output shaft of the third motor passes through and extends to the interior of the mounting plate, and is fixed with a transmission gear, the outer side of the transmission gear is meshed with a rack, a sliding rod is fixed between the inner top wall and the inner bottom wall of the mounting plate, the outer side of the sliding rod is slidably connected to the inner side of the rack, a connecting block is fixed to the front side of the rack, the front side of the connecting block passes through and extends to the front side of the mounting plate, and is fixed to the back side of the chassis.

[0012] Furthermore, a sliding opening is provided on the front side of the mounting plate, the connecting block is located inside the sliding opening, and the width of the sliding opening is matched with the width of the connecting block.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The uniformly heated rotary evaporator can heat the water in the heating pot through the cooperation of the first heating tube, so as to facilitate the water bath heating of the solution inside the rotating bottle. Through the cooperation of the first motor, the rotating rod and the rotating block can be driven to rotate, thereby driving the heat preservation cover to flip over and open or close the heat preservation cover. Through the cooperation of the second heating tube, the wind force of the air outlet pipe can be used for heating, so that the hot air is transferred to the surface of the rotating bottle exposed to the outside, so that the rotating bottle is heated evenly.

[0015] 2. The uniformly heated rotary evaporator can drive the transmission gear to rotate through the cooperation of the third motor, thereby driving the rack to move. The movement of the rack can drive the connecting block to move, thereby driving the chassis to move, so as to adjust the height position of the rotating bottle. The angle and movement trajectory of the rack can be limited through the cooperation of the slide rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the heating mechanism of the utility model;

[0018] Figure 3 This is a side view of the heating mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the adjustment mechanism of the utility model;

[0020] Figure 5 It is a side view of the adjustment mechanism of the utility model.

[0021] In the figure: 1 base, 2 heating pot, 3 heating mechanism, 301 first heating tube, 302 temperature sensor, 303 mounting block, 304 first motor, 305 rotating rod, 306 rotating block, 307 heat preservation cover, 308 fan, 309 air outlet pipe, 310 air nozzle, 311 second heating tube, 4 mounting plate, 5 adjustment mechanism, 501 third motor, 502 transmission gear, 503 rack, 504 slide bar, 505 connecting block, 6 chassis, 7 air inlet pipe, 8 cooling pipe, 9 collecting bottle, 10 second motor, 11 driving gear, 12 driven gear, 13 connecting pipe, 14 rotating bottle. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 A uniformly heated rotary evaporator in this embodiment includes a base 1, a heating pot 2 is fixed on the upper surface of the base 1, and a heating mechanism 3 for uniform heating is arranged on the heating pot 2, so that the solution in the bottle is heated evenly to improve the extraction efficiency, a mounting plate 4 is fixed on the upper surface of the base 1, and an adjustment mechanism 5 for convenient height adjustment is arranged on the mounting plate 4, so that the height of the rotary evaporator can be conveniently adjusted so that the solution can enter the water bath for heating, and a chassis 6 is arranged on the front side of the mounting plate 4.

[0024] Among them, an air intake pipe 7 is fixed to the left side of the chassis 6, and the other end of the air intake pipe 7 is connected to a cooling pipe 8, and the bottom end of the cooling pipe 8 is connected to a collecting bottle 9. A second motor 10 is fixed to the inner wall of the left side of the chassis 6, and a driving gear 11 is fixed to the output shaft of the second motor 10. The second motor 10 drives the driving gear 11 to rotate, and a driven gear 12 is meshed on the outer side of the driving gear 11. The driving gear 11 drives the driven gear 12 to rotate, and a connecting pipe 13 is fixed to the inner side of the driven gear 12. One end of the connecting pipe 13 is rotatably connected to the air intake pipe 7 through a sealed bearing, and the other end of the connecting pipe 13 passes through and extends to the right side of the chassis 6, and is connected to a rotating bottle 14, and the driven gear 12 drives the connecting pipe 13 and the rotating bottle 14 to rotate.

[0025] See also Figure 2-3 In order to make the solution in the bottle heated evenly so as to improve the extraction efficiency, the heating mechanism 3 in this embodiment includes a first heating tube 301, which is fixed to the inner bottom wall of the heating pot 2. The first heating tube 301 heats the water until the extraction temperature of the solution in the rotating bottle 14 is suitable. A temperature sensor 302 is fixed on the inner side of the heating pot 2. The temperature sensor 302 monitors the temperature inside the heating pot 2. A mounting block 303 is fixed on the outer side of the heating pot 2. A first motor is fixed on the front side of the mounting block 303. 304, the output shaft of the first motor 304 passes through and extends to the rear side of the mounting block 303, and is fixed with a rotating rod 305, the first motor 304 drives the rotating rod 305 to rotate, a rotating block 306 is fixed to the outer side of the rotating rod 305, the rotating rod 305 drives the rotating block 306 to rotate, a heat preservation cover 307 is fixed on the upper surface of the rotating block 306, the rotating block 306 drives the heat preservation cover 307 to flip, so that the heat preservation cover 307 covers the heating pot 2, reducing the contact between the rotating bottle 14 and the external cold air, and a temperature balancing component is arranged on the heat preservation cover 307.

[0026] In this example, there are two mounting blocks 303 , which are symmetrically distributed front to back about the central axis of the heating pot 2 , so that the rotating rod 305 remains stable during the rotation process.

[0027] It should be noted that the temperature balancing component includes a fan 308, which is fixed to the upper surface of the heat preservation cover 307. The output end of the fan 308 is connected to an air outlet pipe 309. The other end of the air outlet pipe 309 passes through and extends to the interior of the heat preservation cover 307 and is connected to a wind nozzle 310. A second heating pipe 311 is fixed to the inner side of the air outlet pipe 309. The fan 308 transmits wind force to the air outlet pipe 309, and the second heating pipe 311 is turned on. The second heating pipe 311 heats the wind force passing through the air outlet pipe 309, so that the wind nozzle 310 blows out hot air. The hot air covers the part of the rotating bottle 14 exposed above the water surface, so that the rotating bottle 14 is evenly heated during the rotation. The number of fans 308 is not less than two, and they are evenly distributed on the upper surface of the heat preservation cover 307, so that the hot air coverage around the rotating bottle 14 is more comprehensive.

[0028] See also Figure 4-5 In order to facilitate the adjustment of the height of the rotary evaporator so that the solution can enter the water bath for heating, the adjustment mechanism 5 in this embodiment includes a third motor 501. The output shaft of the third motor 501 penetrates and extends into the interior of the mounting plate 4 and is fixed with a transmission gear 502. The output shaft of the third motor 501 drives the transmission gear 502 to rotate. A rack 503 is meshed on the outer side of the transmission gear 502. The transmission gear 502 drives the rack 503 to move. A slide bar 504 is fixed between the inner top wall and the inner bottom wall of the mounting plate 4. The slide bar 504 The outer side is slidably connected to the inner side of the rack 503, and the slide bar 504 can limit the angle and movement trajectory of the rack 503. A connecting block 505 is fixed to the front side of the rack 503, and the rack 503 drives the connecting block 505 to move. The front side of the connecting block 505 penetrates and extends to the front side of the mounting plate 4, and is fixed to the back side of the chassis 6. The connecting block 505 drives the chassis 6 to move, so that the height of the rotating bottle 14 can be adjusted, and the rotating bottle 14 is moved into the heating pot 2, so that the water level is higher than the liquid level of the solution in the rotating bottle 14.

[0029] In this example, a sliding opening is provided on the front of the mounting plate 4, the connecting block 505 is located inside the sliding opening, and the width of the sliding opening is adapted to the width of the connecting block 505, so that the connecting block 505 can move up and down on the front of the mounting plate 4, and at the same time the sliding opening can limit the moving range of the connecting block 505.

[0030] The working principle of the above embodiment is:

[0031] (1) First, pour water into the heating pot 2, turn on the first heating tube 301, and heat the water until the extraction temperature of the solution in the rotating bottle 14 is suitable. Then turn on the third motor 501, and the output shaft of the third motor 501 drives the transmission gear 502 to rotate, the transmission gear 502 drives the rack 503 to move, the rack 503 drives the connecting block 505 to move, and the connecting block 505 drives the chassis 6 to move, so that the height of the rotating bottle 14 can be adjusted, so that the rotating bottle 14 moves into the heating pot 2, and the water level is higher than the liquid level of the solution in the rotating bottle 14.

[0032] (2) After the rotating bottle 14 enters the heating pot 2, the second motor 10 is turned on, the second motor 10 drives the driving gear 11 to rotate, the driving gear 11 drives the driven gear 12 to rotate, the driven gear 12 drives the connecting pipe 13 and the rotating bottle 14 to rotate, so that the solution is heated in a water bath. At the same time, the first motor 304 is turned on, the first motor 304 drives the rotating rod 305 to rotate, the rotating rod 305 drives the rotating block 306 to rotate, and the rotating block 306 drives the heat preservation cover 307 to flip, so that the heat preservation cover 307 covers the heating pot 2 to reduce the contact between the rotating bottle 14 and the external cold air. Then, the fan 308 is turned on, the fan 308 transmits the wind force to the air outlet pipe 309, and the second heating pipe 311 is turned on. The second heating pipe 311 heats the wind force passing through the air outlet pipe 309, so that the air nozzle 310 blows out hot air, and the hot air covers the part of the rotating bottle 14 exposed on the water surface, so that the rotating bottle 14 is evenly heated during the rotation process.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A uniformly heated rotary evaporator, comprising a base (1), characterized in that: A heating pot (2) is fixed on the upper surface of the base (1), and a heating mechanism (3) for uniform heating is arranged on the heating pot (2); a mounting plate (4) is fixed on the upper surface of the base (1), and an adjustment mechanism (5) for convenient height adjustment is arranged on the mounting plate (4); a chassis (6) is arranged on the front side of the mounting plate (4); The heating mechanism (3) comprises a first heating tube (301), the first heating tube (301) is fixed to the inner bottom wall of the heating pot (2), a temperature sensor (302) is fixed on the inner side of the heating pot (2), a mounting block (303) is fixed on the outer side of the heating pot (2), a first motor (304) is fixed on the front side of the mounting block (303), an output shaft of the first motor (304) passes through and extends to the rear side of the mounting block (303), and a rotating rod (305) is fixed thereto, a rotating block (306) is fixed on the outer side of the rotating rod (305), a heat preservation cover (307) is fixed on the upper surface of the rotating block (306), and a temperature balancing component is arranged on the heat preservation cover (307).

2. A uniformly heated rotary evaporator according to claim 1, characterized in that: An air intake pipe (7) is fixed on the left side of the chassis (6), the other end of the air intake pipe (7) is connected to a cooling pipe (8), the bottom end of the cooling pipe (8) is connected to a collecting bottle (9), a second motor (10) is fixed to the left inner wall of the chassis (6), a driving gear (11) is fixed to the output shaft of the second motor (10), a driven gear (12) is meshed on the outer side of the driving gear (11), a connecting pipe (13) is fixed on the inner side of the driven gear (12), one end of the connecting pipe (13) is rotatably connected to the air intake pipe (7) via a sealed bearing, the other end of the connecting pipe (13) penetrates and extends to the right side of the chassis (6), and is connected to a rotating bottle (14).

3. A uniformly heated rotary evaporator according to claim 1, characterized in that: The number of the mounting blocks (303) is two, and they are symmetrically distributed front to back about the central axis of the heating pot (2).

4. A uniformly heated rotary evaporator according to claim 1, characterized in that: The temperature balancing component comprises a fan (308), wherein the fan (308) is fixed to the upper surface of the heat preservation cover (307), the output end of the fan (308) is connected to an air outlet pipe (309), the other end of the air outlet pipe (309) passes through and extends to the interior of the heat preservation cover (307), and is connected to an air nozzle (310), and a second heating tube (311) is fixed to the inner side of the air outlet pipe (309).

5. A uniformly heated rotary evaporator according to claim 4, characterized in that: The number of the fans (308) is no less than two and they are evenly distributed on the upper surface of the heat-insulating cover (307).

6. A uniformly heated rotary evaporator according to claim 1, characterized in that: The adjustment mechanism (5) comprises a third motor (501), the output shaft of the third motor (501) passes through and extends to the inside of the mounting plate (4), and is fixed with a transmission gear (502), the outer side of the transmission gear (502) is meshed with a rack (503), a sliding rod (504) is fixed between the inner top wall and the inner bottom wall of the mounting plate (4), the outer side of the sliding rod (504) is slidably connected to the inner side of the rack (503), a connecting block (505) is fixed to the front side of the rack (503), the front side of the connecting block (505) passes through and extends to the front side of the mounting plate (4), and is fixed to the back side of the chassis (6).

7. A uniformly heated rotary evaporator according to claim 6, characterized in that: A sliding opening is provided on the front side of the mounting plate (4), the connecting block (505) is located inside the sliding opening, and the width of the sliding opening is adapted to the width of the connecting block (505).

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