Separation and purification device for preparing watermelon ketone

Abstract

The invention discloses a separation and purification device for preparing watermelon ketone, and relates to the technical field of watermelon ketone production. The device comprises a distillation frame, wherein the distillation frame comprises a mounting table arranged on the distillation frame, and a distillation cylinder for containing an ethyl acetate aqueous solution is fixedly mounted on the surface of the mounting table; the pipeline mechanism comprises two distillation butt-joint pipes which are mounted on the mounting table and used for receiving distillation liquid in the distillation cylinder, a rubber hose used for rotating is fixedly mounted on the surface of each distillation butt-joint pipe, and a liquid outlet pipe used for condensing and conveying the distillation liquid is fixedly mounted at the end, away from the distillation butt-joint pipes, of each rubber hose; vibration is generated on the distillation butt-joint pipe through movement of the vibration mechanism, so that liquid beads on the inner wall of the distillation butt-joint pipe are condensed and slide down, meanwhile, due to swinging of the liquid outlet pipe, after the distillation butt-joint pipe rotates by 180 degrees, the liquid outlet pipe inclines downwards, and at the moment, the distillation liquid beads slide down into an external receiving barrel under the action of gravity; therefore, the purpose of automatically collecting the condensed distillate beads is achieved.

Description

Technical Field

[0001] This invention relates to the field of watermelon ketone production technology, and in particular to a separation and purification apparatus for watermelon ketone preparation. Background Technology

[0002] With the development of industry, some compounds are gradually being used in everyday products. Watermelon ketone is a chemically synthesized substance, mainly used in the fragrance industry. Due to its own characteristics, watermelon ketone has also been used in the perfume industry in recent years. Watermelon ketone is generally extracted by an aqueous solution of ethyl acetate. However, since the boiling point of watermelon ketone is between that of ethyl acetate and water, it needs to be separated by secondary distillation.

[0003] Currently, in the process of distilling watermelon ketone, existing equipment performs segmented distillation by switching distillation pipes. However, during the switching process, the condensation at the end of the pipe causes the distilled liquid droplets to flow back into the distillation cylinder, resulting in a decrease in the purity of the substance in the second stage of distillation. At the same time, the liquid droplets in the distillation pipe cannot flow into the receiving cylinder.

[0004] Based on this, the present invention designs a separation and purification device for the preparation of watermelon ketones to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a separation and purification apparatus for preparing watermelon ketone, which aims to solve the technical problems existing in the prior art mentioned in the background.

[0006] The present invention is implemented as follows: a separation and purification apparatus for preparing watermelon ketone, the apparatus comprising: Distillation rack: includes a mounting platform on the distillation rack, on the surface of which a distillation cylinder for holding an aqueous solution of ethyl acetate is fixedly mounted; Piping mechanism: includes two distillation coupling pipes installed on the mounting platform for receiving distilled liquid in the distillation cylinder. Each distillation coupling pipe has a rotating rubber hose fixedly installed on its surface. The end of the rubber hose away from the distillation coupling pipe is fixedly installed with an outlet pipe for condensing and conveying distilled liquid. The end of the outlet pipe away from the rubber hose is connected to an external receiving cylinder through an external rotating joint hose. Swinging mechanism: It drives the liquid outlet pipe to swing by cooperating with the eccentric mechanism; Vibration mechanism: In cooperation with the drive mechanism, it generates vibration on the distillation coupling tube as it revolves; Sealing mechanism: The inlet of the distillation connecting pipe is opened and connected to the outlet of the distillation cylinder by the drive of the slide mechanism.

[0007] Furthermore, the swing mechanism includes a swing rod slidably connected to the surface of the liquid outlet pipe. The surface of the swing rod is connected to two swing wheels, each swing wheel is rotatably connected to the drive mechanism, and the surface of each swing wheel is connected to the inner wall of the drive mechanism through a torsion spring. Each swing wheel meshes with a moving rack, the moving rack is slidably connected to the surface of the drive mechanism, and the surfaces of the two moving racks are connected to a linkage rod. A sliding rod that cooperates with the eccentric mechanism is fixedly installed on the surface of the linkage rod, and a rotating ball is provided at the contact end between the sliding rod and the eccentric mechanism.

[0008] Furthermore, the eccentric mechanism includes an eccentric circular block fixedly mounted on the mounting platform. The inner wall of the eccentric circular block is provided with a variable diameter track and a concentric track that are smoothly connected end to end and cooperate with the sliding rod.

[0009] Furthermore, the vibration mechanism includes a vibration spring fixedly mounted on the distillation connector, a vibration ball fixedly mounted on the end of the vibration spring away from the distillation connector, and multiple circumferentially arranged stop levers that cooperate with the vibration ball fixedly mounted on the surface of one of the eccentric circular blocks.

[0010] Furthermore, the drive mechanism includes a drive motor fixedly mounted on the mounting platform, a drive gear fixedly mounted coaxially at the output end of the drive motor, the drive gear meshing with the linkage gear cylinder, the linkage gear cylinder being fixedly coaxially connected to the surface of the rotating platform, the rotating platform being rotatably connected to the eccentric block, each swing wheel being rotatably connected to the rotating platform, the surface of each swing wheel being connected to the inner wall of the rotating platform through a torsion spring, and the moving rack being slidably connected to the surface of the rotating platform.

[0011] Furthermore, the sealing mechanism includes a fixed plate fixedly installed on a rotating platform, a fixed slide rod fixedly installed on the surface of the fixed plate, a sealing plate for sealing the inlet of the distillation connecting pipe installed on the platform, the sealing plate fixedly installed on the surface of the rotating shaft, the surface of the rotating shaft having a spiral groove and a straight groove that are smoothly connected end to end and cooperate with the fixed slide rod, and a ball is provided at the mating end of the fixed slide rod and the spiral groove and the straight groove, and the end of the rotating shaft away from the sealing plate is rotatably connected to the slide cylinder mechanism.

[0012] Furthermore, the slide mechanism includes a drive cylinder fixedly installed on the inner wall of the rotating frustum, a cylinder rod fixedly installed at the output end of the drive cylinder, a movable slide fixedly installed at the end of the cylinder rod, the movable slide being slidably connected to the surface of the distillation connecting pipe, and a rotating shaft rotatably installed on the surface of the movable slide.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses the combined action of a sealing mechanism and a sliding cylinder mechanism to separate the inlet of the distillation connecting pipe from the outlet of the distillation cylinder, while simultaneously sealing the inlet of the distillation connecting pipe, thereby preventing liquid droplets condensed on the inner wall of the distillation connecting pipe from flowing back into the distillation cylinder, thus achieving the purpose of complete distillation.

[0014] 2. This invention generates vibration on the distillation connecting tube through the movement of the vibration mechanism, thereby causing the distillate droplets on the inner wall of the distillation connecting tube to condense and slide down. At the same time, due to the swing of the outlet tube, after the distillation connecting tube rotates 180 degrees, the outlet tube tilts downward. At this time, the distillate droplets slide down into the external receiving cylinder under the action of gravity, thereby achieving the purpose of automatically collecting the condensed distillate droplets. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a separation and purification device for preparing watermelon ketones according to an embodiment of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram at point A; Figure 4 For the present invention Figure 2 A magnified structural diagram at point B; Figure 5 This is a schematic diagram of another cross-sectional view of the separation and purification apparatus for preparing watermelon ketone according to the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram at point C; Figure 7 This is a schematic diagram of the exploded structure of some parts of a separation and purification device for preparing watermelon ketone according to the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram at point D; Figure 9 For the present invention Figure 7 A magnified structural diagram at point E; Figure 10 For the present invention Figure 7 A magnified structural diagram at point F.

[0016] In the attached diagram: 1. Distillation rack; 101. Mounting platform; 102. Distillation cylinder; 2. Piping mechanism; 201. Distillation connecting pipe; 202. Rubber hose; 203. Discharge pipe; 3. Oscillating mechanism; 301. Oscillating rod; 302. Oscillating wheel; 303. Torsion spring; 304. Moving rack; 305. Linkage rod; 306. Sliding rod; 4. Eccentric mechanism; 401. Eccentric block; 402. Variable diameter track; 403. Concentric track; 5. Vibration mechanism 501. Vibrating ball; 502. Vibrating spring; 503. Stop lever; 6. Drive mechanism; 601. Drive motor; 602. Drive gear; 603. Linkage gear cylinder; 604. Rotating frustum; 7. Sealing mechanism; 701. Sealing plate; 702. Rotating shaft; 703. Spiral groove; 704. Straight groove; 705. Fixed slide rod; 706. Fixed plate; 8. Slide cylinder mechanism; 801. Moving slide cylinder; 802. Cylinder rod; 803. Drive cylinder. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0019] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, in one embodiment, a separation and purification apparatus for preparing watermelon ketone is provided, the apparatus comprising: Distillation rack 1: includes a mounting platform 101 provided on the distillation rack 1, and a distillation cylinder 102 for holding an aqueous solution of ethyl acetate is fixedly mounted on the surface of the mounting platform 101; Piping mechanism 2 includes two distillation connectors 201 mounted on the mounting platform 101 for receiving distilled liquid in the distillation cylinder 102. Each distillation connector 201 has a rotating rubber hose 202 fixedly mounted on its surface. The end of the rubber hose 202 away from the distillation connector 201 is fixedly mounted with an outlet pipe 203 for condensing and conveying distilled liquid. The end of the outlet pipe 203 away from the rubber hose 202 is connected to an external receiving cylinder through an external rotating joint hose. Swinging mechanism 3: It drives the liquid outlet pipe 203 to swing by cooperating with the eccentric mechanism 4; Vibration mechanism 5: In cooperation with drive mechanism 6, it generates vibration on distillation connector 201 when it revolves; Sealing mechanism 7: Driven by the slide mechanism 8, the inlet of the distillation connecting pipe 201 is opened to connect with the outlet of the distillation cylinder 102.

[0020] In practical applications, when performing distillation operations, as described in the embodiments of the present invention... Figure 1 As shown, by raising the temperature of distillation cylinder 102 to the boiling point of ethyl acetate and maintaining that boiling point temperature, as... Figure 4 As shown, at this time, ethyl acetate enters from the distillation cylinder 102 into the distillation connecting pipe 201, rubber hose 202, and outlet pipe 203 through distillation. The liquid flows from the external rotating joint hose to the external receiving cylinder through the condensation effect of the outlet pipe 203. After the distillation of ethyl acetate is completed, as shown... Figure 6 As shown, at this time, the sealing mechanism 7 and the sliding cylinder mechanism 8 work together to separate the inlet of the distillation connecting pipe 201 from the outlet of the distillation cylinder 102, and at the same time seal the inlet of the distillation connecting pipe 201, thereby preventing the liquid droplets condensed on the inner wall of the distillation connecting pipe 201 from flowing back into the distillation cylinder 102, achieving the purpose of complete distillation. Figure 5 As shown, under the action of the drive mechanism 6, the distillation connecting pipe 201 is driven to revolve. During the revolution, the outlet pipe 203 is driven to swing through the cooperation of the swing mechanism 3 and the eccentric mechanism 4. At the same time, after the distillation connecting pipe 201 rotates ninety degrees, as shown... Figure 9 As shown, at this time, the vibration mechanism 5 is triggered to move, and the movement of the vibration mechanism 5 generates vibration on the distillation connector 201, thereby causing the distillate droplets on the inner wall of the distillation connector 201 to condense and slide down, as shown. Figure 2 As shown, due to the swing of the outlet pipe 203, after the distillation connecting pipe 201 rotates 180 degrees, the outlet pipe 203 tilts downwards. At this time, the distillate droplets slide down into the external receiving cylinder under the action of gravity, thereby achieving the purpose of automatically collecting the condensed distillate droplets. At the same time, after the distillation connecting pipe 201 rotates 180 degrees, the symmetrical end of the distillation connecting pipe 201 moves to the top of the distillation cylinder 102. Through the cooperation of the sealing mechanism 7 and the sliding cylinder mechanism 8 at the symmetrical end, the inlet of the symmetrical end of the distillation connecting pipe 201 is connected to the outlet of the distillation cylinder 102. At this time, the temperature is increased to distill the watermelon ketone. Since the outlet pipe 203 at the symmetrical end swings during the rotation, the outlet pipe 203 at the symmetrical end is also tilted downwards after rotation, which facilitates the collection of watermelon ketone after condensation. At the same time, the purpose of automatically switching the distillation pipe and performing segmented distillation is achieved.

[0021] like Figure 2 , Figure 3 , Figure 4 and Figure 10As shown, in a preferred embodiment of the present invention, the swing mechanism 3 includes a swing rod 301 slidably connected to the surface of the liquid outlet pipe 203. The surface of the swing rod 301 is connected to two swing wheels 302. Each swing wheel 302 is rotatably connected to the drive mechanism 6. The surface of each swing wheel 302 is connected to the inner wall of the drive mechanism 6 through a torsion spring 303. Each swing wheel 302 meshes with a moving rack 304. The moving rack 304 is slidably connected to the surface of the drive mechanism 6. The surfaces of the two moving racks 304 are connected to a linkage rod 305. A sliding rod 306 that cooperates with the eccentric mechanism 4 is fixedly installed on the surface of the linkage rod 305. A rotating ball is provided at the contact end of the sliding rod 306 and the eccentric mechanism 4.

[0022] In practical applications, when the distillation connector 201 revolves, as in the embodiments of the present invention... Figure 2 , Figure 3 and Figure 4 As shown, at this time, the eccentric mechanism 4 drives the sliding rod 306 to move closer to the center axis of the distillation connector 201. The movement of the sliding rod 306 drives the moving rack 304 to move closer to the center axis of the distillation connector 201 through the linkage rod 305. At this time, the meshing of the gear and rack drives the swing wheel 302 to rotate, and then drives the outlet pipe 203 to swing through the swing rod 301. Thus, when the distillation connector 201 is in a vertical state, the outlet pipe 203 is always in a downward tilted state, which facilitates the condensation and collection of distilled liquid droplets.

[0023] like Figure 4 , Figure 7 and Figure 9 As shown, in another preferred embodiment of the present invention, the eccentric mechanism 4 includes an eccentric circular block 401 fixedly installed on the mounting platform 101. The inner wall of the eccentric circular block 401 is provided with a variable diameter track 402 and a concentric track 403 that are smoothly connected end to end and cooperate with the sliding rod 306.

[0024] In practical applications, when the distillation connector 201 revolves, as in the embodiments of the present invention... Figure 4 , Figure 7 and Figure 9 As shown, at this time, the sliding rod 306 moves from the concentric track 403 to the variable diameter track 402. Through the trajectory action of the variable diameter track 402, the sliding rod 306 moves closer to the revolution center axis of the distillation connecting pipe 201, thereby triggering the movement of the swing mechanism 3, so that the liquid outlet pipe 203 is always in a downward tilted state.

[0025] like Figure 9As shown, in another preferred embodiment of the present invention, the vibration mechanism 5 includes a vibration spring 502 fixedly installed on the distillation connecting pipe 201, a vibration ball 501 fixedly installed at one end of the vibration spring 502 away from the distillation connecting pipe 201, and a plurality of circumferentially arranged stop rods 503 that cooperate with the vibration ball 501 are fixedly installed on the surface of one of the eccentric circular blocks 401.

[0026] In practical applications of this invention, after the distillation connector 201 has rotated 90 degrees, as the distillation connector 201 continues to rotate, as... Figure 9 As shown, the vibrating ball 501 is in continuous contact with the stop lever 503. Through the elastic action of the vibration spring 502, the stop lever 503 causes the vibrating ball 501 to be pushed, thereby causing the vibrating ball 501 to vibrate back and forth. The vibration generated by the vibrating ball 501 is transmitted to the distillation connecting pipe 201, which helps to collect the distillate droplets on the inner wall of the distillation connecting pipe 201, making it easier to collect the distillate droplets.

[0027] like Figure 5 As shown, in another preferred embodiment of the present invention, the driving mechanism 6 includes a driving motor 601 fixedly mounted on the mounting platform 101. A driving gear 602 is coaxially fixedly mounted on the output end of the driving motor 601. The driving gear 602 meshes with a linkage gear cylinder 603. The linkage gear cylinder 603 is coaxially fixedly connected to the surface of the rotating frustum 604. The rotating frustum 604 is rotatably connected to the eccentric block 401. Each swing wheel 302 is rotatably connected to the rotating frustum 604. The surface of each swing wheel 302 is connected to the inner wall of the rotating frustum 604 through a torsion spring 303. The moving rack 304 is slidably connected to the surface of the rotating frustum 604.

[0028] In practical application, after the distillation of ethyl acetate is completed, the inlet of the distillation connecting pipe 201 is sealed by the sealing mechanism 7 and the slide mechanism 8. After completion, the drive motor 601 starts to move. The operation of the drive motor 601 drives the linkage gear cylinder 603 to rotate through gear meshing, which in turn drives the rotating frustum 604 to rotate, thereby completing the automatic switching of the two symmetrical distillation connecting pipes 201.

[0029] like Figure 6 and Figure 8As shown, in another preferred embodiment of the present invention, the sealing mechanism 7 includes a fixed plate 706 fixedly installed on a rotating frustum 604. A fixed slide rod 705 is fixedly installed on the surface of the fixed plate 706. A sealing plate 701 for sealing the inlet of the distillation connecting pipe 201 is installed on the mounting platform 101. The sealing plate 701 is fixedly installed on the surface of the rotating shaft 702. The surface of the rotating shaft 702 is provided with a spiral groove 703 and a straight groove 704 that are smoothly connected end to end and cooperate with the fixed slide rod 705. A ball is provided at the cooperating end of the fixed slide rod 705 and the spiral groove 703 and the straight groove 704. The end of the rotating shaft 702 away from the sealing plate 701 is rotatably connected to the slide cylinder mechanism 8.

[0030] In practical applications, after the revolution switching of the distillation coupling tube 201 is completed, as in the embodiments of the present invention... Figure 6 As shown, at this time, the slide mechanism 8 starts to operate. The movement of the slide mechanism 8 drives the rotating shaft 702 to move linearly in a direction parallel to the central axis of the distillation connecting pipe 201, as shown. Figure 8 As shown, due to the cooperation between the fixed slide bar 705 and the spiral groove 703, the rotating shaft 702 rotates while moving linearly. At this time, the rotation of the rotating shaft 702 synchronously drives the sealing plate 701 to rotate, thereby opening the inlet of the distillation connecting pipe 201. Through the action of the slide mechanism 8, the inlet of the distillation connecting pipe 201 at the symmetrical end is connected to the outlet of the distillation cylinder 102. After the distillation of ethyl acetate is completed in the early stage, this movement process is reversed, thereby automatically closing the inlet of the distillation connecting pipe 201.

[0031] like Figure 6 As shown, in another preferred embodiment of the present invention, the slide mechanism 8 includes a drive cylinder 803 fixedly installed on the inner wall of the rotating frustum 604, a cylinder rod 802 fixedly installed at the output end of the drive cylinder 803, a movable slide 801 fixedly installed at the end of the cylinder rod 802, the movable slide 801 being slidably connected to the surface of the distillation connecting pipe 201, and a rotating shaft 702 being rotatably installed on the surface of the movable slide 801.

[0032] In practical applications, after the revolution switching of the distillation coupling tube 201 is completed, as in the embodiments of the present invention... Figure 6 As shown, the movable slide 801 starts to run at this time. The operation of the movable slide 801 drives the cylinder rod 802 to move linearly, thereby moving the movable slide 801 away from the inlet of the distillation connecting pipe 201. At the same time, the movable slide 801 drives the sealing mechanism 7 to move, so that the sealing mechanism 7 opens the inlet of the distillation connecting pipe 201. As the movable slide 801 continues to move, the movable slide 801 connects with the outlet of the distillation cylinder 102, thereby achieving the purpose of automatically connecting the outlet of the distillation cylinder 102 and the inlet of the distillation connecting pipe 201.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A separation and purification apparatus for preparing watermelon ketone, characterized in that, The device includes: Distillation rack (1): includes a mounting platform (101) provided on the distillation rack (1), and a distillation cylinder (102) for holding an aqueous solution of ethyl acetate is fixedly mounted on the surface of the mounting platform (101). Piping mechanism (2): includes two distillation connectors (201) installed on the mounting platform (101) for receiving distilled liquid in the distillation cylinder (102). Each distillation connector (201) is fixedly mounted with a rotating rubber hose (202). The end of the rubber hose (202) away from the distillation connector (201) is fixedly mounted with an outlet pipe (203) for condensing and conveying distilled liquid. The end of the outlet pipe (203) away from the rubber hose (202) is connected to an external receiving cylinder through an external rotating joint hose. Swinging mechanism (3): It drives the liquid outlet pipe (203) to swing by cooperating with the eccentric mechanism (4); Vibration mechanism (5): In cooperation with the drive mechanism (6), it generates vibration on the distillation connector (201) when the distillation connector (201) revolves; Sealing mechanism (7): The inlet of the distillation connecting pipe (201) is opened and connected to the outlet of the distillation cylinder (102) by the drive of the slide mechanism (8).

2. The separation and purification apparatus for preparing watermelon ketone according to claim 1, characterized in that, The swing mechanism (3) includes a swing rod (301) that is slidably connected to the surface of the liquid outlet pipe (203). The surface of the swing rod (301) is connected to two swing wheels (302). Each swing wheel (302) is rotatably connected to the drive mechanism (6). The surface of each swing wheel (302) is connected to the inner wall of the drive mechanism (6) through a torsion spring (303). Each swing wheel (302) meshes with a moving rack (304). The moving rack (304) is slidably connected to the surface of the drive mechanism (6). The surfaces of the two moving racks (304) are connected to a linkage rod (305). A sliding rod (306) that cooperates with the eccentric mechanism (4) is fixedly installed on the surface of the linkage rod (305). A rotating ball is provided at the contact end of the sliding rod (306) and the eccentric mechanism (4).

3. The separation and purification apparatus for preparing watermelon ketone according to claim 2, characterized in that, The eccentric mechanism (4) includes an eccentric circular block (401) fixedly installed on the mounting platform (101). The inner wall of the eccentric circular block (401) is provided with a variable diameter track (402) and a concentric track (403) that are smoothly connected end to end and cooperate with the sliding rod (306).

4. The separation and purification apparatus for preparing watermelon ketone according to claim 3, characterized in that, The vibration mechanism (5) includes a vibration spring (502) fixedly installed on the distillation connector (201). A vibration ball (501) is fixedly installed at one end of the vibration spring (502) away from the distillation connector (201). A plurality of circumferentially arranged stop rods (503) that cooperate with the vibration ball (501) are fixedly installed on the surface of one of the eccentric blocks (401).

5. The separation and purification apparatus for preparing watermelon ketone according to claim 3, characterized in that, The drive mechanism (6) includes a drive motor (601) fixedly mounted on the mounting platform (101). A drive gear (602) is fixedly mounted coaxially at the output end of the drive motor (601). The drive gear (602) meshes with the linkage gear cylinder (603). The linkage gear cylinder (603) is coaxially fixedly connected to the surface of the rotating frustum (604). The rotating frustum (604) is rotatably connected to the eccentric block (401). Each swing wheel (302) is rotatably connected to the rotating frustum (604). The surface of each swing wheel (302) is connected to the inner wall of the rotating frustum (604) through a torsion spring (303). The moving rack (304) is slidably connected to the surface of the rotating frustum (604).

6. The separation and purification apparatus for preparing watermelon ketone according to claim 5, characterized in that, The sealing mechanism (7) includes a fixed plate (706) fixedly installed on a rotating truncated cone (604). A fixed slide rod (705) is fixedly installed on the surface of the fixed plate (706). A sealing plate (701) for sealing the inlet of the distillation connecting pipe (201) is installed on the mounting platform (101). The sealing plate (701) is fixedly installed on the surface of the rotating shaft (702). The surface of the rotating shaft (702) is provided with a spiral groove (703) and a straight groove (704) that are smoothly connected end to end and cooperate with the fixed slide rod (705). A ball is provided at the cooperating end of the fixed slide rod (705) and the spiral groove (703) and the straight groove (704). The end of the rotating shaft (702) away from the sealing plate (701) is rotatably connected to the slide cylinder mechanism (8).

7. The separation and purification apparatus for preparing watermelon ketone according to claim 6, characterized in that, The slide mechanism (8) includes a drive cylinder (803) fixedly installed on the inner wall of the rotating truncated cone (604), a cylinder rod (802) fixedly installed at the output end of the drive cylinder (803), a movable slide (801) fixedly installed on the cylinder rod (802), the movable slide (801) is slidably connected to the surface of the distillation connecting pipe (201), and a rotating shaft (702) is rotatably installed on the surface of the movable slide (801).

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