Rectifying tower capable of preventing plate surface pollution

Abstract

The invention discloses a rectifying tower capable of preventing plate surface pollution, and relates to the technical field of rectifying towers, the rectifying tower comprises a tower body, the front side of the tower body is movably connected with a front opening door, a tower plate is arranged in the tower body, the rectifying tower also comprises a dynamic antifouling mechanism and a synchronous conversion mechanism, and the dynamic antifouling mechanism and the synchronous conversion mechanism are both arranged in the tower body. By arranging the dynamic anti-fouling mechanism and utilizing the transverse reciprocating motion of the tower plate in the tower body, the tower plate can be effectively prevented from being blocked, excessively polluted and loosened, deposits on the surface of the tower plate are dispersed, the phenomenon that normal operation of the tower body is influenced due to excessive accumulation of the deposits is avoided, equipment abrasion and corrosion caused by long-term accumulation are reduced, and the service life of the tower body is prolonged. Meanwhile, the transverse reciprocating movement of the tower plates is also beneficial to improving the hydrodynamic characteristics in the tower body, so that the distribution of gas or liquid in the tower body is more uniform, and the mass transfer efficiency and the heat transfer efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of distillation towers, in particular to a distillation tower capable of preventing plate surface pollution. Background Art

[0002] In a distillation tower, the main function of the tray is to bring two fluids into close contact and exchange mass between the two phases, so as to achieve the purpose of separating the components of a liquid mixture or a gas mixture. The reboiler at the bottom of the tower heats the liquid in the bottom of the tower to vaporize it, and the rising steam passes through the holes on the tray and contacts the liquid on the tray to transfer mass and heat.

[0003] However, during the operation of existing distillation towers, since the materials processed in the distillation towers are often corrosive, volatile or contain impurities, and the position of the tower plates is relatively fixed, these substances will come into contact with the tower plates during processing and adhere to the surface of the tower plates, forming a dirt layer that is difficult to clean, which will cause the tower plates to be blocked and affect the normal operation of the tower body. This will not only reduce the mass and heat transfer efficiency, but also cause problems such as abnormal pressure and temperature fluctuations in the tower, and even cause equipment shutdown in severe cases.

[0004] In view of this, the present invention proposes a distillation tower capable of preventing plate surface contamination to compensate for and improve the deficiencies of the prior art. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a distillation tower capable of preventing plate surface contamination, so as to solve the corresponding technical problems raised in the above background technology.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a distillation tower capable of preventing plate surface contamination, comprising a tower body, a front-opening door movably connected to the front side of the tower body, a tower plate arranged inside the tower body, and also comprising: a dynamic anti-fouling mechanism and a synchronous conversion mechanism, and the dynamic anti-fouling mechanism and the synchronous conversion mechanism are both arranged inside the tower body;

[0007] The dynamic anti-fouling mechanism is used to loosen the deposits on the surface of the tower plate;

[0008] The synchronous conversion mechanism is used to loosen the deposits on the surface of the tower plate and synchronously drive the tower to perform further rotational movement on the basis of the lateral reciprocating movement.

[0009] Preferably, the dynamic anti-fouling mechanism includes annular sleeves equidistantly fixedly connected to the inner ring wall of the tower body from top to bottom, linkage rods are symmetrically penetrated and rotatably connected between the annular sleeves, a drive motor is symmetrically fixedly connected to the top of the upper annular sleeve, and the output end of the drive motor is fixedly connected to the linkage rod.

[0010] Preferably, straight slots are symmetrically provided on both sides of the annular sleeve, a sliding rod is vertically penetrated through the straight slot and slidably connected, a driven wheel is fixedly connected to the bottom of the sliding rod, and a convex driving wheel is fixedly connected to the outer surface of the linkage rod at equal distances from top to bottom, and the convex driving wheel is arranged close to the driven wheel.

[0011] Preferably, an annular movable groove is provided inside the annular sleeve plate, a return spring is fixedly connected between the slide rod and the annular movable groove, a movable carrier is fixedly connected between the slide rods, and the movable carrier is laterally slidably connected in the annular movable groove.

[0012] Preferably, an annular rotating groove is provided inside the movable carrier, a rotating carrier is rotatably connected in the annular rotating groove, and the tower plates are fixedly connected to the rotating carrier in an annular shape and equidistantly.

[0013] Preferably, the synchronous conversion mechanism includes a rotating shaft fixedly connected to the rotating carrier coaxially, and the rotating shaft is rotatably connected to the movable carrier, and a gear is fixedly connected to the bottom of the rotating shaft.

[0014] Preferably, a double-headed fixing plate is fixedly connected to the bottom of the annular sleeve, and the double-headed fixing plate is arranged below the gear, an L-shaped toothed plate is fixedly connected to the middle of the double-headed fixing plate, and the L-shaped toothed plate is meshingly connected to the gear.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) By setting up a dynamic anti-fouling mechanism and utilizing the lateral reciprocating movement of the tower plate inside the tower body, the clogging and excessive contamination of the tower plate can be effectively prevented, and the deposits on the surface of the tower plate can be loosened and dispersed to avoid excessive accumulation of these substances, thereby affecting the normal operation of the tower body, reducing equipment wear and corrosion caused by long-term accumulation, thereby extending the service life of the tower body and its internal components. At the same time, the lateral reciprocating movement of the tower plate also helps to improve the fluid dynamics characteristics in the tower body, making the distribution of gas or liquid in the tower body more uniform, thereby improving the mass transfer and heat transfer efficiency;

[0017] (2) Through the rotation of the rotating carrier, the tower plate also rotates synchronously inside the tower body. This rotation action helps to further break and loosen the deposits formed on the surface of the tower plate, keep the tower plate clean and operate efficiently, and by rotating the tower plate, the gas-liquid contact and exchange inside the tower body can be more effectively promoted. This dynamic operation helps to increase the operating efficiency and performance of the tower plate. Especially in processes involving chemical absorption, distillation or extraction, the rotating tower plate can make more full use of the tower space and improve the mass transfer and heat transfer efficiency. In addition, the rotating tower plate can also improve the fluid dynamics characteristics inside the tower body and reduce the formation of dead zones and vortices. This optimization can promote more uniform fluid distribution and more efficient mass transfer process, thereby improving the performance and efficiency of the entire tower body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the tower body shown in the present invention;

[0020] Figure 3 It is a schematic diagram of the structure of the annular sleeve connection shown in the present invention;

[0021] Figure 4 The present invention shows Figure 3 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a structural schematic diagram of the connection of the mobile carrier shown in the present invention;

[0023] Figure 6 The present invention shows Figure 5 The enlarged structural diagram at B in the middle;

[0024] Figure 7 It is a schematic diagram of the gear connection structure shown in the present invention;

[0025] Figure 8 The present invention shows Figure 7 Enlarged structural diagram at point C in the middle.

[0026] The numbers in the figure are:

[0027] 1. Tower body; 2. Front door; 3. Tower plate;

[0028] 4. Dynamic anti-fouling mechanism; 401. Annular sleeve; 402. Annular movable groove; 403. Straight notch; 404. Sliding rod; 405. Return spring; 406. Moving carrier; 407. Annular rotating groove; 408. Rotating carrier; 409. Driving motor; 410. Linkage rod; 411. Convex driving wheel; 412. Driven wheel;

[0029] 5. Synchronous conversion mechanism; 501. Rotating shaft; 502. Gear; 503. Double-headed fixing plate; 504. L-shaped tooth plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiments of the present invention:

[0032] Please refer to Figures 1 to 8 As shown, a distillation tower capable of preventing plate surface contamination comprises a tower body 1, a front door 2 is movably connected to the front side of the tower body 1, a tower plate 3 is arranged inside the tower body 1, and also comprises: a dynamic anti-fouling mechanism 4 and a synchronous conversion mechanism 5, and the dynamic anti-fouling mechanism 4 and the synchronous conversion mechanism 5 are both arranged inside the tower body 1;

[0033] The dynamic anti-fouling mechanism 4 is used to loosen the deposits on the surface of the tower plate 3;

[0034] The synchronous conversion mechanism 5 is used to loosen the deposits on the surface of the tower plate 3 and synchronously drive the tower plate 3 to further rotate on the basis of the lateral reciprocating movement;

[0035] The dynamic anti-fouling mechanism 4 includes an annular sleeve 401 equidistantly fixedly connected to the inner ring wall of the tower body 1 from top to bottom, a linkage rod 410 is symmetrically penetrated and rotatably connected between the annular sleeves 401, a driving motor 409 is symmetrically fixedly connected to the top of the upper annular sleeve 401, and the output end of the driving motor 409 is fixedly connected to the linkage rod 410;

[0036] The annular sleeve 401 is symmetrically provided with straight slots 403 on both sides, and a slide bar 404 is vertically penetrated and slidably connected in the straight slot 403, and a driven wheel 412 is fixedly connected at the bottom of the slide bar 404, and a convex driving wheel 411 is fixedly connected to the outer surface of the linkage rod 410 at equal distances from top to bottom, and the convex driving wheel 411 is arranged close to the driven wheel 412;

[0037] An annular moving groove 402 is provided inside the annular sleeve 401, a return spring 405 is fixedly connected between the slide rod 404 and the annular moving groove 402, a moving carrier 406 is fixedly connected between the slide rods 404, and the moving carrier 406 is laterally slidably connected in the annular moving groove 402;

[0038] An annular rotating groove 407 is provided inside the movable carrier 406, and a rotating carrier 408 is rotatably connected in the annular rotating groove 407, and the tower plate 3 is fixedly connected to the rotating carrier 408 in an annular shape and equidistantly;

[0039] Please refer to Figure 3 , Figure 4 as well as Figure 6 , better: a convex driving wheel 411 and a driven wheel 412 are arranged at the lower sides of each annular sleeve plate 401, and the protruding parts of the left convex driving wheel 411 and the right convex driving wheel 411 are in the same direction, that is, the left convex driving wheel 411 contacts the outer surface of the driven wheel 412, and the right convex driving wheel 411 does not contact the outer surface of the driven wheel 412.

[0040] The effects achieved by this embodiment are as follows: compared with the prior art, by setting up the dynamic anti-fouling mechanism 4 and utilizing the lateral reciprocating movement of the tower plate 3 inside the tower body 1, the blockage and excessive pollution of the tower plate 3 can be effectively prevented, and the deposits on the surface of the tower plate 3 can be loosened and dispersed to avoid excessive accumulation of these substances, thereby affecting the normal operation of the tower body 1, reducing equipment wear and corrosion caused by long-term accumulation, thereby extending the service life of the tower body 1 and its internal components. At the same time, the lateral reciprocating movement of the tower plate 3 also helps to improve the fluid dynamics characteristics in the tower body 1, so that the distribution of gas or liquid in the tower body 1 is more uniform, thereby improving the mass transfer and heat transfer efficiency.

[0041] Further examples:

[0042] Please refer to Figures 1 to 8 As shown, the synchronous conversion mechanism 5 includes a rotating shaft 501 fixedly connected to the rotating carrier 408 coaxially, and the rotating shaft 501 is rotatably connected to the movable carrier 406, and a gear 502 is fixedly connected to the bottom of the rotating shaft 501;

[0043] A double-headed fixing plate 503 is fixedly connected to the bottom of the annular sleeve 401 , and the double-headed fixing plate 503 is arranged below the gear 502 . An L-shaped toothed plate 504 is fixedly connected to the middle of the double-headed fixing plate 503 , and the L-shaped toothed plate 504 is meshed with the gear 502 .

[0044] The effects achieved by this embodiment are as follows: compared with the prior art, through the rotation of the rotating carrier 408, the tower plate 3 also rotates synchronously inside the tower body 1. This rotation action helps to further break and loosen the deposits formed on the surface of the tower plate 3, keep the tower plate 3 clean and operate efficiently, and by rotating the tower plate 3, the gas-liquid contact and exchange inside the tower body 1 can be more effectively promoted. This dynamic operation helps to increase the operating efficiency and performance of the tower plate 3, especially in processes involving chemical absorption, distillation or extraction. The rotating tower plate 3 can make more full use of the space of the tower body 1 and improve the mass transfer and heat transfer efficiency. In addition, the rotating tower plate 3 can also improve the fluid dynamics characteristics inside the tower body 1 and reduce the formation of dead zones and vortices. This optimization can promote more uniform fluid distribution and more efficient mass transfer process, thereby improving the performance and efficiency of the entire tower body 1.

[0045] The complete usage steps and working principle of the above embodiment are as follows:

[0046] The following is the working process of the dynamic anti-fouling mechanism 4 for loosening the deposits on the surface of the tower plate 3:

[0047] It should be noted in advance that if Figure 3 , Figure 4 as well as Figure 6 As shown, a convex driving wheel 411 and a driven wheel 412 are arranged below both sides of each annular sleeve plate 401, and the protruding parts of the left convex driving wheel 411 and the right convex driving wheel 411 are in the same direction, that is, the left convex driving wheel 411 contacts the outer surface of the driven wheel 412, and the right convex driving wheel 411 does not contact the outer surface of the driven wheel 412;

[0048] When using, Figure 2 and Figure 3 As shown, since the annular sleeve 401 is fixedly arranged on the inner ring wall of the tower body 1 at equal intervals from top to bottom, and the top of the annular sleeve 401 located at the upper end is symmetrically fixedly arranged with a driving motor 409, and a linkage rod 410 is symmetrically penetrated and rotatably arranged between the multiple annular sleeves 401, and the top of the linkage rod 410 is fixedly connected to the output end of the driving motor 409, through the synchronous start-up operation of the driving motor 409, the linkage rod 410 connected to its output end can be driven to rotate synchronously between the multiple annular sleeves 401, and because the outer surface of the linkage rod 410 is fixedly arranged with convex driving wheels 411 at equal intervals from top to bottom, when the linkage rod 410 is driven to rotate, the convex driving wheel 411 synchronously rotates under the annular sleeve 401 with the linkage rod 410 as the axis, and cooperates with Figure 5 and Figure 6As shown, straight slots 403 are symmetrically provided on both sides of the annular sleeve 401, and an annular movable groove 402 is provided inside the annular sleeve 401, and the straight slots 403 and the annular movable grooves 402 are connected to each other, and a slide bar 404 is slidably provided in the straight slots 403, and a driven wheel 412 is fixedly provided at the bottom of the slide bar 404, and the driven wheel 412 is arranged close to the convex driving wheel 411. When the linkage rod 410 rotates to drive the convex driving wheel 411 to rotate, the protruding portion of the convex driving wheel 411 will contact the surface of the driven wheel 412, and during the rotation of the convex driving wheel 411, the setting of the protruding portion can apply an outward thrust to the driven wheel 412 (i.e., push the driven wheel 412 in a direction away from the convex driving wheel 411), as shown in FIG. Figure 6 As shown in the figure, a return spring 405 is fixedly arranged between the slide bar 404 and the annular movable groove 402. Through the elastic force of the return spring 405, when the convex driving wheel 411 pushes the driven wheel 412 to move, the slide bar 404 connected to the driven wheel 412 can be moved outward, and at the same time, the return spring 405 on this side is stretched. When the convex driving wheel 411 continues to rotate, the protruding part on the convex driving wheel 411 loses contact with the outer surface of the driven wheel 412, and the driven wheel 412 is stretched. When the thrust disappears, under the elastic force of the return spring 405, the stretched return spring 405 drives the slide bar 404 to retract, so that the slide bar 404 returns to its initial position, thereby realizing the return movement of the driven wheel 412, so that the convex driving wheel 411 pushes the driven wheel 412 in the next circle, and thus a repetition is formed to realize the intermittent push of the driven wheel 412, and under the cooperation of the return spring 405, the lateral reciprocating movement of the driven wheel 412 can be realized, such as Figure 5As shown, a movable carrier 406 is fixedly arranged between the left and right slide bars 404, and the movable carrier 406 is arranged to slide horizontally in the annular movable groove 402. Therefore, when the driven wheel 412 moves back and forth, the slide bar 404 synchronously follows and drives the movable carrier 406 to move horizontally back and forth synchronously in the annular movable groove 402. In addition, because an annular rotating groove 407 is opened inside the movable carrier 406, and a rotating carrier 408 is rotatably arranged in the annular rotating groove 407, and the tower plate 3 is fixedly arranged on the rotating carrier 408 in an annular shape and equidistantly, when the movable carrier 406 moves horizontally back and forth left and right, the rotating carrier 40 The positions of the tower plates 8 and 3 also change synchronously, and they move back and forth horizontally inside the tower body 1. The lateral reciprocating movement of the tower plates 3 can effectively prevent the clogging and excessive pollution of the tower plates 3, loosen and disperse the deposits on the surface of the tower plates 3, avoid excessive accumulation of these substances, and thus affect the normal operation of the tower body 1, reduce equipment wear and corrosion caused by long-term accumulation, thereby extending the service life of the tower body 1 and its internal components. At the same time, the lateral reciprocating movement of the tower plates 3 also helps to improve the fluid dynamics characteristics in the tower body 1, making the distribution of gas or liquid in the tower body 1 more uniform, thereby improving the mass transfer and heat transfer efficiency;

[0049] Please refer to the above working process Figures 1 to 8 .

[0050] The following is the working process of the synchronous conversion mechanism 5 for loosening the deposits on the surface of the tray 3 and synchronously driving the tray 3 to further rotate on the basis of the lateral reciprocating movement:

[0051] In the foregoing, the dynamic anti-fouling mechanism 4 is provided to make the mobile carrier 406 reciprocate laterally in the annular moving groove 402 provided inside the annular sleeve plate 401. Since the mobile carrier 406 is provided with an annular rotating groove 407, and the rotating carrier 408 is rotatably provided inside the annular rotating groove 407, as the mobile carrier 406 moves laterally, driven by the lateral movement, the rotating carrier 408 provided inside the mobile carrier 406 can be driven to move laterally synchronously with the lateral movement of the mobile carrier 406. At the same time, since the rotating shaft 501 is fixedly provided coaxially on the rotating carrier 408, and the rotating shaft 501 and the mobile carrier 406 are rotatably connected, a gear 502 is fixedly provided at the bottom of the rotating shaft 501, as shown in FIG. Figure 3 , Figure 7 as well as Figure 8As shown, a double-headed fixed plate 503 is fixedly provided at the bottom of the annular sleeve 401, and an L-shaped toothed plate 504 is fixedly provided in the middle of the double-headed fixed plate 503, and the L-shaped toothed plate 504 is meshed and connected with the gear 502. When the mobile carrier 406 moves laterally, as the mobile carrier 406 moves laterally, the rotating carrier 408 arranged inside the mobile carrier 406 and the rotating shaft 501 arranged at its axis will synchronously move laterally above the double-headed fixed plate 503. At this time, since the gear 502 is fixedly provided at the bottom of the rotating shaft 501, as the rotating shaft 501 moves laterally, the gear 502 will also move laterally synchronously, and at this time the gear 50 2 will be released from the L-shaped toothed plate 504, and the meshing connection between the teeth of the L-shaped toothed plate 504 and the gear 502 can drive the gear 502 to rotate between the rotating carrier 408 and the double-headed fixed plate 503. Because the gear 502 is fixedly connected to the rotating carrier 408 through the rotating shaft 501, when the gear 502 rotates, the rotating carrier 408 can be driven to rotate synchronously in the annular rotating groove 407 by utilizing the connection of the rotating shaft 501. At this time, the rotating carrier 408 is affected by the lateral movement of the annular sleeve plate 401 and cooperates with the restriction of the annular rotating groove 407 on the rotating carrier 408, so that the rotating carrier 408 can synchronously follow the annular sleeve plate 401 to move horizontally In this process, the rotating carrier 408 is affected by the meshing action of the L-shaped tooth plate 504 and the gear 502, and at the same time as it moves horizontally, it synchronously rotates in the annular rotating groove 407, so that the rotating carrier 408 synchronously rotates in the annular rotating groove 407 opened in the moving carrier 406 while changing its horizontal position. Because the tower plate 3 is arranged on the rotating carrier 408, when the rotating carrier 408 rotates, the tower plate 3 can be driven to rotate synchronously with the inside of the tower body 1. Through the rotation of the rotating carrier 408, the tower plate 3 also rotates synchronously in the tower body 1. This rotation action helps to further Break and loosen the deposits formed on the surface of the tray 3, keep the tray 3 clean and operate efficiently, and by rotating the tray 3, the gas-liquid contact and exchange inside the tower body 1 can be more effectively promoted. This dynamic operation helps to increase the operating efficiency and performance of the tray 3. Especially in processes involving chemical absorption, distillation or extraction, the rotating tray 3 can make more full use of the space of the tower body 1 and improve the mass transfer and heat transfer efficiency. In addition, the rotating tray 3 can also improve the fluid dynamics characteristics inside the tower body 1 and reduce the formation of dead zones and eddies. This optimization can promote more uniform fluid distribution and more efficient mass transfer process, thereby improving the performance and efficiency of the entire tower body 1;

[0052] Please refer to the above working process Figures 1 to 8 .

[0053] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0054] 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 distillation tower capable of preventing plate surface contamination, comprising a tower body (1), wherein a front door (2) is movably connected to the front side of the tower body (1), and a tower plate (3) is arranged inside the tower body (1), characterized in that: It also includes: a dynamic anti-fouling mechanism (4) and a synchronous conversion mechanism (5), and the dynamic anti-fouling mechanism (4) and the synchronous conversion mechanism (5) are both arranged inside the tower body (1); The dynamic anti-fouling mechanism (4) is used to loosen deposits on the surface of the tower plate (3); The synchronous conversion mechanism (5) is used to loosen the deposits on the surface of the tower plate (3) and synchronously drive the tower plate (3) to perform further rotational movement on the basis of the lateral reciprocating movement.

2. A distillation tower capable of preventing plate surface contamination according to claim 1, characterized in that: The dynamic anti-fouling mechanism (4) comprises an annular sleeve plate (401) fixedly connected to the inner ring wall of the tower body (1) at equal distances from top to bottom, a linkage rod (410) symmetrically penetrates and is rotatably connected between the annular sleeve plates (401), a driving motor (409) is symmetrically fixedly connected to the top of the upper annular sleeve plate (401), and the output end of the driving motor (409) is fixedly connected to the linkage rod (410).

3. A distillation tower capable of preventing plate surface contamination according to claim 2, characterized in that: The annular sleeve (401) is symmetrically provided with straight slots (403) on both sides, a slide bar (404) is vertically penetrated in the straight slot (403) and is slidably connected, a driven wheel (412) is fixedly connected to the bottom of the slide bar (404), and a convex driving wheel (411) is fixedly connected to the outer surface of the linkage rod (410) at equal intervals from top to bottom, and the convex driving wheel (411) is arranged close to the driven wheel (412).

4. A distillation tower capable of preventing plate surface contamination according to claim 3, characterized in that: An annular movable groove (402) is provided inside the annular sleeve plate (401), a return spring (405) is fixedly connected between the slide rod (404) and the annular movable groove (402), a movable carrier (406) is fixedly connected between the slide rods (404), and the movable carrier (406) is laterally slidably connected in the annular movable groove (402).

5. A distillation tower capable of preventing plate surface contamination according to claim 4, characterized in that: An annular rotating groove (407) is provided inside the movable carrier (406), a rotating carrier (408) is rotatably connected inside the annular rotating groove (407), and the tower plate (3) is fixedly connected to the rotating carrier (408) in an annular shape and at equal distances.

6. A distillation tower capable of preventing plate surface contamination according to claim 4, characterized in that: The synchronous conversion mechanism (5) comprises a rotating shaft (501) fixedly connected to the rotating carrier (408) coaxially, and the rotating shaft (501) is rotatably connected to the movable carrier (406), and a gear (502) is fixedly connected to the bottom of the rotating shaft (501).

7. A distillation tower capable of preventing plate surface contamination according to claim 6, characterized in that: A double-headed fixing plate (503) is fixedly connected to the bottom of the annular sleeve (401), and the double-headed fixing plate (503) is arranged below the gear (502). An L-shaped toothed plate (504) is fixedly connected to the middle of the double-headed fixing plate (503), and the L-shaped toothed plate (504) is meshingly connected to the gear (502).

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