Rotary evaporator with adjustable distillation height

Abstract

The utility model relates to a rotary evaporator with adjustable distillation height, which belongs to the technical field of evaporators, and comprises a bottom plate, an adjusting bin is fixed on the top surface of the bottom plate, an adjusting mechanism is arranged in the adjusting bin, a rectangular bin is mounted on the front surface of the adjusting bin, a driving mechanism is arranged in the rectangular bin, a condenser pipe is mounted on the front surface of the rectangular bin, and the condenser pipe is connected with the adjusting mechanism. A rotating pipe is rotationally connected to the right side of the condensation pipe, and an evaporation bottle is fixed to the right end of the rotating pipe; the adjusting mechanism comprises a U-shaped plate fixed to the back face of the rectangular bin, a U-shaped frame is fixed to the bottom face of the U-shaped plate, a rack is fixed to the inner wall of the left side of the adjusting bin, a gear is rotationally connected between the inner walls of the U-shaped frame, a sliding rod is slidably connected to the top face of the U-shaped plate, and a tooth block is fixed to the bottom end of the sliding rod. The peripheral wall of the sliding rod is sleeved with a spring. According to the rotary evaporator with the adjustable distillation height, the height is adjusted through the adjusting mechanism, and the rotary evaporator is more convenient to use.

Description

Technical Field

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

[0002] Rotary evaporator is a common laboratory equipment, which is mainly used for continuous distillation of large amounts of volatile solvents under reduced pressure. The working principle of rotary evaporator is to put the evaporating flask in a negative pressure state through a vacuum pump, control the evaporating flask to rotate at a constant speed at the most suitable speed to increase the evaporation surface.

[0003] For example, a Chinese patent (publication number: CN206823201 U) discloses a rotary evaporator, including: a water bath, an evaporating flask, an air duct, a condenser, a rotating mechanism, a liquid level detector and a controller, wherein the water bath is installed at the bottom of the evaporating flask for heating the evaporating flask; the input end of the air duct is connected to the evaporating flask, and the output end is connected to the condenser; the rotating mechanism is connected to the condenser and drives the condenser to rotate; the liquid level detector is installed on the evaporating flask and is used to detect the remaining liquid in the evaporating flask and send the detection signal to the controller; the controller is connected to the rotating mechanism to control the operation of the rotating mechanism, is easy to prepare, and can achieve real-time monitoring of the remaining liquid in the evaporating flask and autonomous control of the experimental process, thereby greatly improving the experimental efficiency.

[0004] However, the above search patent still has some shortcomings. It is not convenient to adjust the height when using it, and the water bath is installed at the bottom of the evaporating flask. When the evaporating flask needs to leave the water bath to stop heating, it is not convenient to raise the evaporating flask, which is inconvenient to use. Therefore, a rotary evaporator with adjustable distillation height is proposed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a rotary evaporator with adjustable distillation height, which has the advantages of easy height adjustment, etc., and solves the problem that the device disclosed in the above-mentioned search patent is not easy to adjust the height during use.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solutions: a rotary evaporator with adjustable distillation height, comprising a bottom plate, a water bath pot is fixed on the top surface of the bottom plate, an adjustment bin is fixed on the top surface of the bottom plate, an adjustment mechanism is arranged in the adjustment bin, a rectangular bin is installed on the front of the adjustment bin through the adjustment mechanism, a driving mechanism is arranged in the rectangular bin, a condenser is installed on the front of the rectangular bin through the driving mechanism, a rotating tube is rotatably connected to the right side of the condenser, and an evaporation flask is fixed on the right end of the rotating tube;

[0007] The adjusting mechanism comprises a U-shaped plate fixed to the back side of the rectangular bin, a U-shaped frame is fixed to the bottom surface of the U-shaped plate and near the rear side, a rack is fixed to the left inner wall of the adjusting bin, a gear meshing with the rack is rotatably connected between the front and rear inner walls of the U-shaped frame, a sliding rod with a bottom end extending to the inside of the U-shaped frame is slidably connected to the top surface of the U-shaped plate, a tooth block meshing with the gear is fixed to the bottom end of the sliding rod, a spring is mounted on the outer peripheral wall of the sliding rod, sliders are fixed to the front and rear sides of the U-shaped frame, and sliding grooves for sliding connection of the sliders are provided on the front and rear inner walls of the adjusting bin.

[0008] Furthermore, the driving mechanism includes a rotating rod rotatably connected to the inner wall of the rear side of the rectangular bin, the front end of the rotating rod is fixed to the condenser, a worm gear is fixed to the outer peripheral wall of the rotating rod, a worm meshing with the worm gear is rotatably connected to the top surface of the rectangular bin, a circular tube is rotatably connected to the outer peripheral wall of the rotating rod, a motor is fixed to the inner wall of the rear side of the rectangular bin, transmission teeth meshing with each other are fixed to the outer peripheral wall of the circular tube and the output shaft of the motor, and conical teeth meshing with each other are fixed to the outer peripheral wall of the circular tube and the outer peripheral wall of the rotating tube.

[0009] Furthermore, the top surface of the regulating chamber is open, the evaporating flask is threadedly connected to the rotating tube, the two form a detachable connection, and the water bath is located directly below the evaporating flask.

[0010] Furthermore, the rear side wall of the U-shaped plate extends into the interior of the adjustment chamber, and the U-shaped frame is disposed inside the adjustment chamber.

[0011] Furthermore, the sliding rod is a square rod, a limiting ball is fixed on the top of the sliding rod, and a square hole for the sliding rod to pass through is opened on the top surface of the U-shaped plate.

[0012] Furthermore, the spring is arranged in the U-shaped frame, and the slide groove is used for the slider to slide up and down inside the slide groove.

[0013] Furthermore, a handle is fixed to the top of the worm, and a circular hole for the circular tube to pass through is opened on the front of the rectangular bin.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The rotary evaporator with adjustable distillation height can, when in use, drive the rectangular bin to move up and down along the adjusting bin through the arranged adjusting mechanism, and then adjust the height, so that the evaporating flask can be moved down to be immersed in a water bath for heating or moved up to be separated from the water bath for stopping heating, and is more convenient to use. When performing heating distillation, the arranged driving mechanism can drive the rotating tube to rotate, and then drive the evaporating flask to rotate, so that the distilled liquid inside the evaporating flask can be better heated, which is beneficial to improving the evaporation efficiency, has better practicality, and is more convenient for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a side cross-sectional schematic diagram of the regulating bin of the utility model;

[0018] Figure 3 For this utility model Figure 2 The enlarged schematic diagram of point A in the middle;

[0019] Figure 4 It is a three-dimensional schematic diagram of the U-shaped plate of the utility model;

[0020] Figure 5 It is a side sectional schematic diagram of the rectangular bin of the utility model.

[0021] In the figure: 1 bottom plate, 2 water bath, 3 adjusting chamber, 4 rectangular chamber, 5 condenser, 6 rotating tube, 7 evaporating flask, 801 U-shaped plate, 802 U-shaped frame, 803 rack, 804 gear, 805 sliding rod, 806 tooth block, 807 spring, 808 slider, 809 slide groove, 901 rotating rod, 902 worm wheel, 903 worm, 904 round tube, 905 motor, 906 transmission tooth, 907 conical tooth. 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 1In this embodiment, a rotary evaporator with adjustable distillation height comprises a bottom plate 1, a water bath 2 is fixed on the top surface of the bottom plate 1, an adjustment chamber 3 is fixed on the top surface of the bottom plate 1, an adjustment mechanism is arranged in the adjustment chamber 3, a rectangular chamber 4 is installed on the front of the adjustment chamber 3 through the adjustment mechanism, a driving mechanism is arranged in the rectangular chamber 4, a condenser 5 is installed on the front of the rectangular chamber 4 through the driving mechanism, a rotating tube 6 is rotatably connected to the right side of the condenser 5, an evaporation bottle 7 is fixed to the right end of the rotating tube 6, the top surface of the adjustment chamber 3 is open, the evaporation bottle 7 is threadedly connected to the rotating tube 6, and the two form an adjustable height. The water bath 2 is disassembled and connected, and is located directly below the evaporating flask 7. When in use, the rectangular bin 4 can be driven to move up and down along the adjusting bin 3 through the adjusting mechanism, and then the height can be adjusted, so that the evaporating flask 7 can be moved down and immersed in the water bath 2 for heating or moved up and out of the water bath 2 to stop heating, which is more convenient to use. When heating and distilling are performed, the rotating tube 6 can be driven to rotate through the driving mechanism, and then the evaporating flask 7 can be driven to rotate, so that the distilled liquid inside it can be better heated, which is beneficial to improving the evaporation efficiency, has better practicality, and is more convenient for popularization and use.

[0024] It should be noted that the condenser 5 is a mature and public technology in the prior art, so its specific structure and vacuuming operations are not described in detail herein.

[0025] See also Figure 1-4The adjusting mechanism includes a U-shaped plate 801 fixed to the back of the rectangular bin 4, a U-shaped frame 802 is fixed to the bottom surface of the U-shaped plate 801 and near the rear side, the rear side wall of the U-shaped plate 801 extends into the inside of the adjusting bin 3, the U-shaped frame 802 is arranged inside the adjusting bin 3, sliders 808 are fixed to the front and rear sides of the U-shaped frame 802, and the inner walls of the front and rear sides of the adjusting bin 3 are provided with slide grooves 809 for sliding connection of the sliders 808, and the slide grooves 809 are used for the sliders 808 to slide up and down therein, a rack 803 is fixed to the inner wall of the left side of the adjusting bin 3, a gear 804 meshing with the rack 803 is rotatably connected between the front and rear inner walls of the U-shaped frame 802, a sliding rod 805 whose bottom end extends into the inside of the U-shaped frame 802 is slidably connected to the top surface of the U-shaped plate 801, the sliding rod 805 is a square rod, and a limiting ball is fixed to the top of the sliding rod 805. The top surface of 01 is provided with a square hole for the sliding rod 805 to pass through, and a tooth block 806 meshing with the gear 804 is fixed at the bottom end of the sliding rod 805. When the height needs to be adjusted, the sliding rod 805 is pulled upward, and the sliding rod 805 drives the tooth block 806 to move up and disengage from the gear 804. At this time, the slider 808 and the slide groove 809 can be cooperated to slide the U-shaped plate 801 up and down to drive the rectangular warehouse 4 to adjust up and down. A spring 807 is mounted on the outer peripheral wall of the sliding rod 805, and the spring 807 is arranged in the U-shaped frame 802. When the tooth block 806 moves up, the spring 807 will be compressed. When the adjustment is completed, the sliding rod 805 is released, and the spring 807 pushes the tooth block 806 to move down and mesh with the gear 804. At this time, the gear 804 is meshed with the rack 803 and the tooth block 806 at the same time to form a movement obstacle that cannot rotate, thereby playing the effect of fixing the U-shaped plate 801.

[0026] See also Figure 4-5In this embodiment, the driving mechanism includes a rotating rod 901 rotatably connected to the inner wall of the rear side of the rectangular bin 4, the front end of the rotating rod 901 is fixed to the condenser 5, a worm wheel 902 is fixed to the outer peripheral wall of the rotating rod 901, and the top surface of the rectangular bin 4 is rotatably connected to a worm 903 meshing with the worm wheel 902, and a handle is fixed to the top of the worm 903. After adjusting the height of the evaporation flask 7, the worm 903 can be rotated, and the worm 903 drives the worm wheel 902 to rotate. The worm wheel 902 drives the rotating rod 901 to rotate, and the rotating rod 901 drives the condenser 5 and the evaporation flask 7 to rotate and adjust the inclination angle, so as to facilitate better distillation. The circular tube 904 and the front of the rectangular bin 4 are provided with a circular hole for the circular tube 904 to pass through. A motor 905 is fixed on the inner wall of the rear side of the rectangular bin 4. Transmission teeth 906 that mesh with each other are fixed on the outer peripheral wall of the circular tube 904 and the output shaft of the motor 905. Conical teeth 907 that mesh with each other are fixed on the outer peripheral wall of the circular tube 904 and the outer peripheral wall of the rotating tube 6. During distillation, the motor 905 is started, and the transmission teeth 906 of the motor 905 drive the circular tube 904 to rotate. Further, the circular tube 904 drives the rotating tube 6 and the evaporating flask 7 to rotate through the conical teeth 907, so that the liquid inside the evaporating flask 7 can be better heated and evaporated.

[0027] It should be noted that the control method of the present application is controlled by a controller, and the control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and the present application is mainly used to protect mechanical devices, so the present application will no longer explain the control method and circuit connection in detail.

[0028] The working principle of the above embodiment is:

[0029] (1) When the height needs to be adjusted, the sliding rod 805 is pulled upward, and the sliding rod 805 drives the tooth block 806 to move upward and disengage from the gear 804. At this time, the U-shaped plate 801 can be slid up and down in cooperation with the slider 808 and the slide groove 809 to drive the rectangular bin 4 to adjust up and down. When the tooth block 806 moves up, the spring 807 is compressed. When the adjustment is completed, the sliding rod 805 is released, and the spring 807 pushes the tooth block 806 to move downward and mesh with the gear 804. At this time, the gear 804 is meshed with the rack 803 and the tooth block 806 at the same time to form a movement obstacle and cannot rotate, thereby playing the effect of fixing the U-shaped plate 801.

[0030] (2) After adjusting the height of the evaporating flask 7, the worm 903 can be rotated, the worm 903 drives the worm wheel 902 to rotate, the worm wheel 902 drives the rotating rod 901 to rotate, and the rotating rod 901 drives the condensing tube 5 and the evaporating flask 7 to rotate and adjust the inclination angle, so as to better perform distillation. During distillation, the motor 905 is started, and the transmission gear 906 of the motor 905 drives the circular tube 904 to rotate. Further, the circular tube 904 drives the rotating tube 6 and the evaporating flask 7 to rotate through the conical gear 907, so that the liquid inside the evaporating flask 7 can be better heated and evaporated.

[0031] 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.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary evaporator with adjustable distillation height, comprising a bottom plate (1), characterized in that: A water bath (2) is fixed on the top surface of the bottom plate (1), an adjustment chamber (3) is fixed on the top surface of the bottom plate (1), an adjustment mechanism is provided in the adjustment chamber (3), a rectangular chamber (4) is installed on the front of the adjustment chamber (3) through the adjustment mechanism, a driving mechanism is provided in the rectangular chamber (4), a condenser (5) is installed on the front of the rectangular chamber (4) through the driving mechanism, the right side of the condenser (5) is rotatably connected to a rotating tube (6), and an evaporating flask (7) is fixed on the right end of the rotating tube (6); The adjustment mechanism comprises a U-shaped plate (801) fixed to the back of the rectangular bin (4); a U-shaped frame (802) is fixed to the bottom surface of the U-shaped plate (801) and near the rear side; a rack (803) is fixed to the left inner wall of the adjustment bin (3); a gear (804) meshing with the rack (803) is rotatably connected between the front and rear inner walls of the U-shaped frame (802); a sliding rod (805) whose bottom end extends into the interior of the U-shaped frame (802) is slidably connected to the top surface of the U-shaped plate (801); a tooth block (806) meshing with the gear (804) is fixed to the bottom end of the sliding rod (805); a spring (807) is sleeved on the outer peripheral wall of the sliding rod (805); sliders (808) are fixed to the front and rear sides of the U-shaped frame (802); and sliding grooves (809) for sliding connection of the sliders (808) are provided on the front and rear inner walls of the adjustment bin (3).

2. A rotary evaporator with adjustable distillation height according to claim 1, characterized in that: The driving mechanism comprises a rotating rod (901) rotatably connected to the inner wall of the rear side of the rectangular bin (4), the front end of the rotating rod (901) is fixed to the condenser (5), a worm wheel (902) is fixed to the outer peripheral wall of the rotating rod (901), a worm (903) meshing with the worm wheel (902) is rotatably connected to the top surface of the rectangular bin (4), a circular tube (904) is rotatably connected to the outer peripheral wall of the rotating rod (901), a motor (905) is fixed to the inner wall of the rear side of the rectangular bin (4), transmission teeth (906) meshing with each other are fixed to the outer peripheral wall of the circular tube (904) and the output shaft of the motor (905), and conical teeth (907) meshing with each other are fixed to the outer peripheral wall of the circular tube (904) and the outer peripheral wall of the rotating tube (6).

3. A rotary evaporator with adjustable distillation height according to claim 1, characterized in that: The top surface of the regulating chamber (3) is open, the evaporating flask (7) is threadedly connected to the rotating tube (6), and the two form a detachable connection, and the water bath (2) is located directly below the evaporating flask (7).

4. A rotary evaporator with adjustable distillation height according to claim 1, characterized in that: The rear side wall of the U-shaped plate (801) extends into the interior of the regulating chamber (3), and the U-shaped frame (802) is arranged inside the regulating chamber (3).

5. A rotary evaporator with adjustable distillation height according to claim 1, characterized in that: The sliding rod (805) is a square rod, a limiting ball is fixed on the top of the sliding rod (805), and a square hole for the sliding rod (805) to pass through is formed on the top surface of the U-shaped plate (801).

6. A rotary evaporator with adjustable distillation height according to claim 1, characterized in that: The spring (807) is arranged in the U-shaped frame (802), and the slide groove (809) is used for allowing the slider (808) to slide up and down inside it.

7. A rotary evaporator with adjustable distillation height according to claim 2, characterized in that: A handle is fixed to the top of the worm (903), and a circular hole for the circular tube (904) to pass through is provided on the front of the rectangular bin (4).

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