Watermelon ketone preparation exhaust gas purification device

Abstract

The present application relates to the technical field of industrial waste gas treatment, and discloses a watermelon ketone preparation waste gas purification device, which comprises a support, the inner side of the support is fixedly connected with an adsorption tower, a motor is installed at the bottom of the adsorption tower, the output end of the motor is fixedly connected with a main shaft, a transmission mechanism is arranged at the top of the main shaft, a rotating adsorption disc is arranged on the inner wall of the adsorption tower, a plurality of active carbon adsorption boxes for adsorbing waste gas generated in watermelon ketone preparation are detachably connected to the top of the rotating adsorption disc, a petal-shaped flow guide plate is fixedly connected to the outer wall of the main shaft, a regeneration mechanism is arranged at the top of the petal-shaped flow guide plate, and a purge gas tank is arranged outside the adsorption tower. In the present application, automatic circulation of adsorption-regeneration is realized under the condition that the whole waste gas purification device does not stop running, the continuous operation of the device is ensured, the regeneration efficiency of the active carbon is improved, manual intervention is reduced, and the device is suitable for industrial continuous production scenes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of industrial waste gas treatment, and particularly relates to a watermelon ketone preparation waste gas purification device. BACKGROUND

[0002] In the field of industrial waste gas treatment, the activated carbon adsorption device is the core equipment for realizing organic waste gas purification, and is widely used in continuous production scenes such as chemical industry, spraying, and pharmaceuticals. This kind of device realizes purification through the adsorption of organic matter in waste gas by activated carbon, but the activated carbon needs to be regenerated after saturation to be reused, and how to maintain the continuous operation of the equipment in the regeneration process to match the continuous production requirements of the industry has become a key technical difficulty.

[0003] The traditional activated carbon adsorption device generally adopts a fixed bed adsorption mode, and when the activated carbon is saturated, the whole device needs to be shut down and the adsorption unit needs to be replaced offline, or the fixed bed layer needs to be regenerated online. However, whether it is offline replacement or online regeneration, the waste gas treatment process needs to be interrupted - the saturated activated carbon needs to be removed offline, and the heating, purging and other operations during online regeneration will occupy the whole adsorption bed, causing the waste gas treatment process to be forced to stop. This intermittent working mode of “adsorption-stop-regeneration” not only causes a decrease in production efficiency, but also affects the stability of the equipment due to frequent start-stop, and it is difficult to meet the requirements of 24-hour continuous operation of industrial production.

[0004] Therefore, in view of the above problems, a watermelon ketone preparation waste gas purification device is proposed to solve the above problems. SUMMARY

[0005] In order to make up for the above shortcomings, the present application provides a watermelon ketone preparation waste gas purification device, which aims to improve the problem that the regeneration or replacement of the traditional fixed bed activated carbon adsorption device in the prior art requires shutdown, causing the waste gas treatment to be interrupted and thus reducing the treatment efficiency.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0007] A watermelon ketone preparation waste gas purification device, comprising a support, the inner side of the support is fixedly connected with an adsorption tower, the bottom of the adsorption tower is provided with a motor, the output end of the motor is fixedly connected with a main shaft, the top of the main shaft is provided with a transmission mechanism, the inner wall of the adsorption tower is provided with a rotating adsorption disc, the top of the rotating adsorption disc is detachably connected with a plurality of activated carbon adsorption boxes for adsorbing waste gas generated in the preparation of watermelon ketone, the outer wall of the main shaft is fixedly connected with a petal-shaped guide plate, the top of the petal-shaped guide plate is provided with a regeneration mechanism, and the outside of the adsorption tower is provided with a purging gas tank.

[0008] The regeneration mechanism comprises a circular arc top stake fixedly connected at the top of the petal-shaped guide plate, a plurality of semicircular protrusions are arranged at the top of the circular arc top stake, a dust collecting hopper is detachably connected inside the adsorption tower, a top column is slidably connected inside the dust collecting hopper, the bottom of the top column is in contact with the semicircular protrusions, a connecting disc is arranged on the outer side of the top column, and a reset spring is arranged between the connecting disc and the bottom of the dust collecting hopper;

[0009] As a further description of the above technical solution:

[0010] The rotating adsorption disc comprises a tapered roller bearing, the outer side of the tapered roller bearing is fixedly connected to the inner side of the adsorption tower, the inner side of the tapered roller bearing is rotatably connected to the mounting disc, a plurality of dovetail grooves are arranged in the inner part of the mounting disc, and a U-shaped chuck is arranged in the middle part of the dovetail groove;

[0011] As a further description of the above technical solution:

[0012] The active carbon adsorption box comprises a box body, the outer side of the box body is detachably connected to the inner part of the dovetail groove, the bottom of the box body is in contact with the top of the top column, the outer side of the box body is in contact with the inner side of the U-shaped chuck, a plurality of air holes are arranged in the inner part of the box body, a plurality of spiral drainage grooves are arranged in the inner side of the air hole, and a sealing washer is arranged on the outer side of the bottom of the box body;

[0013] As a further description of the above technical solution:

[0014] The transmission mechanism comprises a driving wheel, the bottom of the driving wheel is fixedly connected to the top of the main rotating shaft, a supporting arm is fixedly connected to the inner wall of the adsorption tower, a driven wheel is rotatably connected to the other end of the supporting arm, the driving wheel is engaged with the driven wheel, a dial is fixedly connected to the top of the driven wheel, a cylindrical pin is fixedly connected to the top outer side of the dial, a circular arc concave column is fixedly connected to the top center position of the dial, and the circular arc surface of the circular arc concave column is opposite to the cylindrical pin;

[0015] As a further description of the above technical solution:

[0016] The transmission mechanism further comprises a notched wheel, the top of the notched wheel is fixedly connected to the bottom of the mounting disc, a plurality of locking arc surfaces are arranged on the outer side of the notched wheel, radial grooves are arranged between the plurality of locking arc surfaces, and the locking arc surfaces are in contact with the outer side of the circular arc concave surface;

[0017] As a further description of the above technical solution:

[0018] The inside of the purge gas tank is provided with a blower, an arc-shaped groove is arranged at the bottom of the purge gas tank, the shape of the arc-shaped groove is matched with the shape of the active carbon adsorption box, and the bottom gas outlet of the purge gas tank is opposite to two active carbon adsorption boxes;

[0019] As a further description of the above technical solution:

[0020] The petal-shaped guide plate is provided with a plurality of guide grooves, the shape of the guide grooves is matched with the shape of the activated carbon adsorption box, and the caliber of the guide grooves gradually decreases from the bottom to the top.

[0021] As a further description of the above technical solution:

[0022] The top of the top column is provided with a rubber top head, the bottom of the top column is provided with a semispherical convex head, and the outside of the semispherical convex head is provided with a lubricating layer.

[0023] As a further description of the above technical solution:

[0024] The U-shaped chuck is matched with the dovetail groove to fix the activated carbon adsorption box, and the U-shaped chucks are connected through the clamping springs.

[0025] As a further description of the above technical solution:

[0026] The sealing ring is matched with the shape of the bottom of the dovetail groove.

[0027] As a further description of the above technical solution:

[0028] The shape of the cylindrical pin is matched with the shape of the radial groove.

[0029] The present application has the following beneficial effects:

[0030] 1、In the present application, when the main rotating shaft rotates, the cylindrical pin of the dial engages with the radial groove of the gear wheel, so that the rotating adsorption disc rotates intermittently at a 1 / 5 circle beat, so that the activated carbon adsorption boxes on the adsorption disc are switched to the workstations in groups: four groups continuously adsorb waste gas in the adsorption area, and one group enters the regeneration area. And because the arc top pile rotates synchronously with the main rotating shaft, the semicircular convex of the arc top pile mechanically links with the semispherical convex head of the top column, pushes the top column to reciprocate, and drives the adsorption box to vibrate at high frequency; at the same time, the sweeping gas tank directs the gas flow to be sprayed, and removes the organic matter adsorbed by the activated carbon. Each mechanical structure realizes the automatic circulation of adsorption-regeneration through pure mechanical movement logic cooperation, ensures the continuous operation of the device, improves the activated carbon regeneration efficiency, reduces manual intervention, and adapts to the industrial continuous production scene.

[0031] 2、In the application, the quick sealing is realized by dovetail groove, U-shaped chuck and snap spring: the dovetail groove provides guidance, the U-shaped chuck clamps and positions, and the snap spring is elastically pre-tightened, so that the adsorption box is stable and has no displacement when rotating and vibrating. The design of the box body vent hole and the spiral drainage groove prolongs the waste gas flow path and increases the contact area with the activated carbon; the bottom sealing washer uses differential pressure dynamic sealing to prevent waste gas leakage and ensure that all waste gas passes through the adsorption box. The flow guide groove of the petal-shaped flow guide plate uniformly distributes the airflow, so that the air intake of each adsorption box is balanced. These structures optimize the contact conditions of waste gas and activated carbon through mechanical cooperation and airflow guiding logic, improve the adsorption efficiency, guarantee the reliability of waste gas purification, and provide stable mechanical support for waste gas treatment. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 A perspective view of a watermelon ketone preparation waste gas purification device is provided for the application;

[0033] Figure 2 A structure diagram of an adsorption tower of a watermelon ketone preparation waste gas purification device is provided for the application;

[0034] Figure 3 A structure diagram of a rotating adsorption disc of a watermelon ketone preparation waste gas purification device is provided for the application;

[0035] Figure 4 A Figure 3 enlarged view of A in FIG. 1;

[0036] Figure 5 A structure diagram of an activated carbon adsorption box of a watermelon ketone preparation waste gas purification device is provided for the application;

[0037] Figure 6 A structure diagram of a transmission mechanism of a watermelon ketone preparation waste gas purification device is provided for the application;

[0038] Figure 7 A structure diagram of a regeneration mechanism of a watermelon ketone preparation waste gas purification device is provided for the application;

[0039] Figure 8 A Figure 7 enlarged view of B in FIG. 1.

[0040] LEGEND:

[0041] 1, support; 2, adsorption tower; 3, motor; 4, main shaft; 5, transmission mechanism; 501, driving wheel; 502, support arm; 503, driven wheel; 504, dial; 505, cylindrical pin; 506, arc concave column; 507, notched wheel; 6, rotating adsorption disc; 601, tapered roller bearing; 602, mounting disc; 603, dovetail groove; 604, U-shaped chuck; 605, clasp spring; 7, activated carbon adsorption box; 701, box body; 702, air hole; 703, spiral drainage groove; 704, sealing washer; 8, petal-shaped guide plate; 9, regeneration mechanism; 901, arc top pile; 902, semicircular protrusion; 903, dust hopper; 904, top column; 905, connecting disc; 906, return spring; 10, purge gas tank. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0043] REFERENCE Figures 1 to 8 An embodiment provided by the present application: a watermelon ketone preparation waste gas purification device, comprising a support 1, the support 1 is used as the supporting basis of the device, and fixed components such as an adsorption tower 2 and a motor 3 are ensured to be stable in the overall structure of the equipment, the inner side of the support 1 is fixedly connected with the adsorption tower 2, the adsorption tower 2 forms a closed waste gas treatment space, and core components such as a rotating adsorption disc 6 and an activated carbon adsorption box 7 are contained to ensure the closed nature of the gas flow path, a motor 3 is installed at the bottom of the adsorption tower 2, the motor 3 provides a power source, drives a main shaft 4 to rotate, and provides power for mechanical movement of the device, the output end of the motor 3 is fixedly connected with the main shaft 4, the main shaft 4 is connected with the motor 3 and a transmission mechanism 5, rotates the petal-shaped guide plate 8, the top of the adsorption tower 2 is provided with the transmission mechanism 5, the inner wall of the adsorption tower 2 is provided with the rotating adsorption disc 6, the top of the rotating adsorption disc 6 is detachably connected with a plurality of activated carbon adsorption boxes 7, the outer wall of the main shaft 4 is fixedly connected with the petal-shaped guide plate 8, the top of the petal-shaped guide plate 8 is provided with a regeneration mechanism 9, the outside of the adsorption tower 2 is provided with a purge gas tank 10, an arc-shaped groove is formed in the bottom of the purge gas tank 10, the shape of the arc-shaped groove is matched with the shape of the activated carbon adsorption box 7, and the bottom gas outlet of the purge gas tank 10 is opposite to two activated carbon adsorption boxes 7 to spray high-pressure gas to remove organic matter adsorbed by activated carbon in the regeneration zone;

[0044] The regeneration mechanism 9 includes an arc-shaped top post 901. The top of the arc-shaped top post 901 is provided with multiple semi-circular protrusions 902. When the petal-shaped guide plate 8 rotates, it cooperates with the top column 904 to push the top column 904 to reciprocate. The adsorption tower 2 is detachably connected to a dust collection hopper 903, which collects the organic matter blown out during regeneration. The top column 904 is slidably connected inside the dust collection hopper 903. The top of the top column 904 is provided with a rubber top head to transmit vibration to the bottom of the activated carbon adsorption box 7. The bottom is provided with a hemispherical protrusion, and the outside of the hemispherical protrusion is provided with a lubricating layer to reduce friction with the semi-circular protrusions 902. The bottom of the top column 904 contacts the semi-circular protrusions 902. A connecting plate 905 is provided on the outside. A return spring 906 is provided between the connecting plate 905 and the bottom of the dust collection hopper 903 so that the top column 904 returns to the initial position after vibration is completed, ensuring the periodicity of the regeneration process.

[0045] The rotary adsorption plate includes a tapered roller bearing 601. The tapered roller bearing 601 is fixedly connected to the inner side of the adsorption tower 2 on the outside, and a mounting plate 602 is rotatably connected to the inner side. The mounting plate 602 supports the rotation of the mounting plate 602 and reduces friction. Multiple dovetail grooves 603 are opened inside the mounting plate 602 to provide installation guidance for the activated carbon adsorption box 7 and facilitate disassembly and assembly. A U-shaped chuck 604 is provided in the middle of the dovetail groove 603. The U-shaped chuck 604 cooperates with the dovetail groove 603 to fix the activated carbon adsorption box 7. Multiple U-shaped chucks 604 are connected by snap rings 605 to provide elastic pre-tightening force and ensure that the adsorption box is stable and does not shift when rotating and vibrating.

[0046] The activated carbon adsorption box 7 includes a box body 701. The outer side of the box body 701 is detachably connected to the inside of the dovetail groove 603, and the bottom contacts the top of the top column 904. The outer side contacts the inner side of the U-shaped chuck 604. Multiple ventilation holes 702 are provided inside to provide a flow channel for waste gas. Multiple spiral guide grooves 703 are provided inside the ventilation holes 702 to extend the flow path of waste gas and increase the contact area with the honeycomb activated carbon. A sealing gasket 704 is provided on the outer bottom of the box body 701, and the shape of the sealing gasket 704 is adapted to the bottom shape of the dovetail groove 603. Dynamic sealing is achieved by utilizing the gas pressure difference inside and outside the adsorption tower 2 to prevent waste gas leakage.

[0047] Multiple guide channels are provided on the petal-shaped guide plate 8. The shape of the guide channels is adapted to the shape of the activated carbon adsorption box 7, and the diameter of the guide channel gradually decreases from the bottom to the top, so as to achieve uniform distribution of exhaust gas and make the air intake of each activated carbon adsorption box 7 balanced.

[0048] The transmission mechanism 5 comprises a driving wheel 501 fixedly connected at the bottom of the top of the main rotating shaft 4, a supporting arm 502 fixedly connected with the inner wall of the adsorption tower 2, a driven wheel 503 rotatably connected at the other end of the supporting arm 502, the driving wheel 501 and the driven wheel 503 are engaged, the power of the main rotating shaft 4 is transmitted to the driven wheel 503, the driven wheel 503 is fixedly connected with a dial 504 at the top, the dial 504 is fixedly connected with a cylindrical pin 505 at the top outside, a circular arc concave column 506 is fixedly connected at the top center position, and the circular arc surface of the circular arc concave column 506 faces the cylindrical pin 505, the cylindrical pin 505 cooperates with the radial groove of a notched wheel 507, the mechanical locking of the locking arc surface and the circular arc concave column 506 is utilized, the transmission mechanism 5 further comprises the notched wheel 507, the notched wheel 507 is fixedly connected at the bottom of the mounting disc 602 at the top, a plurality of locking arc surfaces are formed at the outside, and radial grooves are formed between the plurality of locking arc surfaces, the locking arc surface is in contact with the outside of the circular arc concave surface, the shape of the cylindrical pin 505 is matched with the shape of the radial groove, the intermittent rotation of the notched wheel 507 is realized, and then the rotating adsorption disc 6 is driven to rotate in an intermittent mode, so that the active carbon adsorption box 7 is periodically switched between the adsorption area and the regeneration area.

[0049] Working principle: after the motor 3 is started, the output end drives the main rotating shaft 4 to rotate. In the transmission mechanism 5 at the top of the main rotating shaft 4, the driving wheel 501 rotates with the shaft, drives the dial 504 to rotate through the engagement transmission with the driven wheel 503. The cylindrical pin 505 on the dial 504 cooperates with the radial groove of the notched wheel 507, the mechanical locking of the locking arc surface and the circular arc concave column 506 is utilized, the intermittent rotation of the notched wheel 507 is realized. Then the rotating adsorption disc 6 is driven to rotate in an intermittent mode through the rotation of the notched wheel 507, that is, the rotating adsorption disc 6 rotates one sixth of a circle when the main rotating shaft 4 rotates one circle, so that each group of active carbon adsorption boxes 7 (adjacent two active carbon adsorption boxes 7 are a group, and there are five groups in total) stays in the adsorption area for enough time (four active carbon adsorption boxes 7 are located in the adsorption area, and one group is located in the regeneration area).

[0050] After the exhaust gas enters the adsorption tower 2, it first passes through the guide groove of the petal-shaped guide plate 8 to realize uniform distribution of the airflow. After being guided, the exhaust gas enters the active carbon adsorption box 7, and the air holes 702 and the spiral drainage groove 703 in the box body 701 increase the contact area between the exhaust gas and the honeycomb active carbon. The pollutants in the exhaust gas are adsorbed by the active carbon, and the purified gas is discharged from the top of the adsorption tower 2.

[0051] When the rotary adsorption disc 6 brings the activated carbon adsorption box 7 into the regeneration zone, the petal-shaped guide plate 8 on the outer wall of the main rotating shaft 4 rotates synchronously, driving the circular arc top post 901 to rotate. The semicircular protrusions 902 on the circular arc top post 901 contact the hemispherical protrusions on the bottom of the top post 904, pushing the top post 904 to move upward along the slide in the dust collecting hopper 903. The rubber top head on the top of the top post 904 contacts the bottom of the activated carbon adsorption box 7 and causes multiple vibrations through the multiple semicircular protrusions 902. At the same time, the arc-shaped slot of the purge gas tank 10 sprays high-pressure gas into the two adsorption boxes in the regeneration zone, blowing the adsorbed organic matter into the dust collecting hopper 903. The reset of the top post 904 is achieved by the connecting disc 905 and the reset spring 906, ensuring that it returns to the initial position after each vibration.

[0052] The activated carbon adsorption box 7 is installed through the dovetail groove 603 and the U-shaped chuck 604, and the snap spring 605 provides elastic pre-tightening force to ensure that the module does not directly detach from the dovetail groove 603 during rotation and vibration. The bottom sealing washer 704 realizes dynamic sealing by utilizing the gas pressure difference inside and outside the adsorption tower 2, preventing waste gas leakage. The entire device realizes the cycle operation of adsorption and regeneration through the continuous operation of the motor 3. The dust collecting hopper 903 is detachable and can be cleaned regularly to collect organic matter.

[0053] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application should be included in the protection scope of the present application.

Claims

1. A waste gas purification device for watermelon ketone preparation, comprising a support frame (1), characterized in that: An adsorption tower (2) is fixedly connected to the inner side of the support (1). A motor (3) is installed at the bottom of the adsorption tower (2). A main shaft (4) is fixedly connected to the output end of the motor (3). A transmission mechanism (5) is provided at the top of the main shaft (4). A rotating adsorption disk (6) is provided on the inner wall of the adsorption tower (2). Multiple activated carbon adsorption boxes (7) for adsorbing the waste gas generated during the preparation of watermelon ketone are detachably connected to the top of the rotating adsorption disk (6). A petal-shaped guide plate (8) is fixedly connected to the outer wall of the main shaft (4). A regeneration mechanism (9) is provided at the top of the petal-shaped guide plate (8). A purge gas box (10) is provided on the outside of the adsorption tower (2). The regeneration mechanism (9) includes an arc-shaped top post (901) fixedly connected to the top of the petal-shaped guide plate (8). The top of the arc-shaped top post (901) is provided with a plurality of semi-circular protrusions (902). The adsorption tower (2) is detachably connected to a dust collection hopper (903). The dust collection hopper (903) is slidably connected to a top column (904). The bottom of the top column (904) contacts the semi-circular protrusions (902). A connecting plate (905) is provided on the outside of the top column (904). A reset spring (906) is provided between the connecting plate (905) and the bottom of the dust collection hopper (903). The activated carbon adsorption box (7) includes a box body (701), the outer side of which is detachably connected to the inside of the dovetail groove (603), and the bottom of the box body (701) is in contact with the top of the top column (904), the outer side of the box body (701) is in contact with the inner side of the U-shaped chuck (604), and the inside of the box body (701) is provided with multiple ventilation holes (702), the inner side of the ventilation holes (702) is provided with multiple spiral drainage grooves (703), and a sealing gasket (704) is provided on the outer side of the bottom of the box body (701). The petal-shaped guide plate (8) has multiple guide grooves. The shape of the guide grooves is adapted to the shape of the activated carbon adsorption box (7), and the diameter of the guide grooves gradually decreases from the bottom to the top.

2. The waste gas purification device for watermelon ketone preparation according to claim 1, characterized in that: The rotating adsorption disk (6) includes a tapered roller bearing (601). The outer side of the tapered roller bearing (601) is fixedly connected to the inner side of the adsorption tower (2). The inner side of the tapered roller bearing (601) is rotatably connected to an installation disk (602). The installation disk (602) has multiple dovetail grooves (603) inside. A U-shaped chuck (604) is provided in the middle of the dovetail groove (603).

3. The waste gas purification device for watermelon ketone preparation according to claim 1, characterized in that: The transmission mechanism (5) includes a drive wheel (501), the bottom of which is fixedly connected to the top of the main rotating shaft (4). A support arm (502) is fixedly connected to the inner wall of the adsorption tower (2). A driven wheel (503) is rotatably connected to the other end of the support arm (502). The drive wheel (501) and the driven wheel (503) mesh with each other. A dial (504) is fixedly connected to the top of the driven wheel (503). A cylindrical pin (505) is fixedly connected to the outer side of the top of the dial (504). A concave arc column (506) is fixedly connected to the center of the top of the dial (504), and the arc surface of the concave arc column (506) faces the cylindrical pin (505).

4. The waste gas purification device for watermelon ketone preparation according to claim 3, characterized in that: The transmission mechanism (5) also includes a grooved wheel (507), the top of which is fixedly connected to the bottom of the mounting plate (602). Multiple locking arc surfaces are provided on the outer side of the grooved wheel (507), and radial grooves are provided between the multiple locking arc surfaces. The locking arc surfaces are in contact with the outer side of the arc concave surface.

5. The waste gas purification device for watermelon ketone preparation according to claim 1, characterized in that: The purge air box (10) is equipped with a blower inside. The bottom of the purge air box (10) has an arc-shaped groove. The shape of the arc-shaped groove is adapted to the shape of the activated carbon adsorption box (7). The bottom air outlet of the purge air box (10) is directly opposite two of the activated carbon adsorption boxes (7).

6. The waste gas purification device for watermelon ketone preparation according to claim 1, characterized in that: The top of the top post (904) is provided with a rubber top head, and the bottom of the top post (904) is provided with a hemispherical protrusion, and the outside of the hemispherical protrusion is provided with a lubricating layer.

7. The waste gas purification device for watermelon ketone preparation according to claim 2, characterized in that: The U-shaped chuck (604) and the dovetail groove (603) work together to fix the activated carbon adsorption box (7), and multiple U-shaped chucks (604) are connected by snap rings (605).

8. The waste gas purification device for watermelon ketone preparation according to claim 1, characterized in that: The shape of the sealing gasket (704) is adapted to the bottom shape of the dovetail groove (603).

9. The waste gas purification device for watermelon ketone preparation according to claim 4, characterized in that: The shape of the cylindrical pin (505) is adapted to the shape of the radial groove.

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