Plate tower and cleaning equipment thereof

Abstract

The invention relates to the field of distillation chemical instruments, in particular to a plate tower and cleaning equipment thereof, the plate tower cleaning equipment comprises a cylindrical supporting seat, an annular storage groove is formed in the middle of the supporting seat in the circumferential direction, a filling air bag is arranged in the storage groove, and the filling air bag is arranged in the supporting seat. The side face of the filling air bag is fixedly connected with an inflation pipe communicated with the filling air bag, a foam conveying pipe penetrates through the middle of the inflation pipe and is fixedly connected with the supporting base, and a foam spraying groove with an upward return opening is formed in the supporting base. Therefore, the tower plates on all layers in the plate type tower and the tower covers on the tower plates can be well cleaned.

Description

Technical Field

[0001] The present invention relates to the field of distillation chemical equipment, in particular to a plate tower and cleaning equipment thereof. Background Art

[0002] Ethyl methyl carbonate is a very important chemical raw material. In the process of producing ethyl methyl carbonate, it is usually synthesized through the esterification reaction of alcohol and acid under the intervention of catalyst. Through heating and the action of catalyst, ethanol and acetic acid react to produce ethyl methyl carbonate and water. In the actual production process, distillation is often used to increase the concentration of ethyl methyl carbonate.

[0003] In the actual distillation process, plate towers are often used as a type of equipment. They have the characteristics of strong applicability and high processing capacity. The main structure of the plate tower includes a shell and tower plates, wherein a plurality of tower plates are distributed in the shell, which divide the interior of the shell into a plurality of cavities, wherein a plurality of bubble towers are installed on the tower plates.

[0004] In the process of treating the cavity, the existing technology often adopts the method of using high-pressure water flow to carry detergent to clean the inside of the cavity. However, in the plate tower, since the tower plates divide the inside of the shell into multiple independent areas, the high-pressure water flow can only clean one layer when cleaning the plate tower, which is very troublesome. At the same time, since the bubble tower is small and the internal space is small, the traditional high-pressure water flow flushing method often makes it difficult to clean the inside of the bubble tower well. Summary of the Invention

[0005] The present invention provides a plate tower, which can solve the problem in the prior art that the plate tower is difficult to be cleaned by cleaning equipment.

[0006] A plate tower,

[0007] include:

[0008] A shell having multiple layers of trays installed therein, wherein a plurality of bubble caps are fixedly installed in the middle of the upper end of each tray, and the bubble caps are communicated with the lower end of the tray;

[0009] A downcomer is fixedly mounted on one end of the tray near the shell and serves as a liquid channel connecting the upper and lower trays. A notch is provided on the tray at a position corresponding to the downcomer, and the downcomers of two adjacent trays are staggered.

[0010] An overflow weir, the overflow weir being fixedly mounted on the notched end of the tower plate;

[0011] an air outlet, the air outlet being provided at the upper end of the shell and communicating with the interior of the shell;

[0012] A discharge hole is provided at the lower end of the shell and communicates with the interior of the shell; an air inlet and a feed hole are also provided on the side of the shell;

[0013] A plurality of cleaning holes are provided on the side of the shell from top to bottom, and each cleaning hole is provided between the upper and lower tower plates.

[0014] A further solution is that the height of the overflow weir is 3-5 mm.

[0015] In addition, the present invention also provides a plate tower cleaning device;

[0016] include:

[0017] The support seat is cylindrical, and a circular receiving groove is circumferentially opened in the middle position of the support seat. A filling air bag is arranged in the receiving groove. An inflation tube connected to the filling air bag is fixedly connected to the side of the filling air bag. A foam delivery tube passes through the middle position of the inflation tube. The foam delivery tube is fixedly connected to the support seat, and a foam ejection groove with an upward return port is opened inside the support seat.

[0018] A further solution is that a support column is provided in the middle position inside the support seat, and a closed slide groove is provided on the side wall of the support seat, the opening of the closed slide groove is smaller at the end away from the support column, and the opening of the closed slide groove is larger at the end close to the support column, and there are multiple closed slide grooves evenly distributed along the circumference of the support seat, and a closing slider that fits the closing slide groove is slidably connected in the closed slide groove, and a closing spring is provided between the closing slider and the support column, and the two ends of the closing spring are respectively fixedly mounted on the support column and the closing slider.

[0019] A further solution is that a metal pull rope is embedded in the side wall of the filling airbag, and a plurality of the metal pull ropes are evenly distributed along the circumference of the support column.

[0020] A further solution is that a plurality of nozzles are fixedly installed on the upper end of one side of the filling airbag, a water spray baffle is provided inside the support seat, the water spray baffle separates a water spray chamber at the lower end of the foam spraying groove, a water pipe communicating with the water spray chamber is fixedly connected to the support column, the support column and the nozzle are connected by a water outlet pipe, and the water outlet pipe is communicated with the water spray chamber.

[0021] A further solution is that the water spray baffle is slidably connected to the support column in the vertical direction, the water spray baffle is a double layer, and the upper water spray baffle and the lower water spray baffle are fixedly connected, a barrier cavity is formed between the two water spray baffles, and the lower water spray baffle is stepped, the two layers of water spray baffles close to one end of the water pipe are smaller, and the two layers of water spray baffles away from one end of the water pipe are larger, a return spring is fixedly connected between the upper water spray baffle and the side wall of the foam ejection groove, and a foam output pipe is also fixedly connected to the support column, the foam output pipe is communicated with the barrier cavity, and the foam output pipe is connected to the nozzle.

[0022] A further solution is that the nozzle includes a base and a spray part, the base is provided with a water inlet cavity and is fixedly connected to the filling airbag, the water inlet cavity is connected to the water outlet pipe, the spray part is fixedly installed at the upper end of the base, and a water spray trough is provided in the spray part.

[0023] A further solution is that the water spray trough is inclined and evenly distributed along the circumference of the spray part of the nozzle, so that the water flow of the water spray trough is sprayed obliquely on the wall of the downcomer. The advantage of this is that it can significantly increase the area covered by the water flow cleaning, thereby improving the efficiency of cleaning the downcomer.

[0024] A further solution is that foam flow channels are opened in the base and the spraying part, the foam flow channel in the base is communicated with the foam output pipe, and the foam flow channel in the spraying part is communicated with the water spraying trough through a mixing trough.

[0025] Beneficial effects:

[0026] 1. The present invention delivers gas to the filling airbag through the inflation tube. As the filling airbag gradually expands, it will eventually contact the side wall of the shell, blocking the upper and lower parts of the shell. The foam delivery tube is connected to the external foam generator. The foam generator will pass the foam containing detergent into the foam ejection groove through the foam delivery tube. Finally, the foam is ejected from the foam ejection groove and gradually accumulates at the upper end of the filling airbag, and finally passes through the tower cover, so that the interior of the plate tower shell and all parts of the tower plate can be effectively cleaned.

[0027] 2. The present invention increases the pressure of the conveying gas in the filling airbag, so that the upper end of the filling airbag is in close contact with the lower end of the downcomer. At the same time, the pressure of the gas in the airbag on the closing slider is also increased, thereby pushing the closing slider. At the same time, the closing spring is compressed. At this time, the high-pressure gas will enter the foam ejection groove through the gap between the closing slider and the closing chute. At this time, the high-pressure gas will drive the foam containing the detergent to quickly flush the tower plate and the tower cover, thereby effectively improving the cleaning efficiency.

[0028] 3. In the process of injecting water into the water spray chamber through the water supply pipe of the present invention, the water flow will first apply pressure to the water spray baffle below, and then the water spray baffle will move upward, and the return spring will be compressed. At the same time, the water spray chamber will be connected with the water outlet pipe, so that the water flow can enter the water outlet pipe from the water spray chamber, and the water spray baffle will be pushed to the position corresponding to the barrier chamber and the foam delivery pipe. At this time, the foam carrying the detergent will enter the barrier chamber and enter the foam output pipe from the barrier chamber. Finally, the foam carrying the detergent will enter the nozzle and be sprayed onto the wall of the downcomer along with the water flow, thereby improving the cleaning ability of the downcomer.

[0029] 4. In the present invention, when the foam enters the water spray trough 521 through the mixing trough 522, the water flow in the water spray trough 521 will carry the foam with it. At the same time, the above method can make the water flow and the detergent in the foam produce a more stable mixing ratio, thereby improving the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the structure of the plate tower in the present invention;

[0031] Figure 2 Schematic diagram of the internal structure of the plate tower in the present invention;

[0032] Figure 3 For the present invention Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0033] Figure 4 It is a structural schematic diagram of the plate tower cleaning equipment of the present invention;

[0034] Figure 5 For the present invention Figure 4 A schematic diagram of the partially enlarged structure at point B in the middle;

[0035] Figure 6 Schematic diagram of the internal structure of the support base in the present invention;

[0036] Figure 7 A schematic diagram of a two-point cross-section of the filled airbag of the present invention;

[0037] FIG8 is a schematic diagram of a partially enlarged structure of point C in FIG7 of the present invention; FIG9 is a schematic diagram of the structure of the nozzle of the present invention.

[0038] Description of reference numerals:

[0039] 1. Shell; 11. Plate; 111. Bubble cap; 12. Downcomer; 13. Overflow weir; 14. Air outlet; 15. Discharge hole; 16. Air inlet; 17. Feed hole; 18. Cleaning hole; 2. Support seat; 21. Receiving trough; 22. Foam spraying trough; 221. Water spraying chamber; 23. Support column; 231. Water delivery pipe; 232. Water outlet pipe; 233. Foam output pipe; 24. Closing chute; 25. Closing slider; 26. Closing spring; 27. Water spraying baffle; 271. Blocking chamber; 28. Return spring; 3. Filling airbag; 31. Inflating tube; 32. Metal pull rope; 4. Foam delivery pipe; 5. Nozzle; 51. Base; 511. Water inlet chamber; 52. Spraying part; 521. Water spraying trough; 522. Mixing trough; 53. Foam flow channel. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0041] like Figure 1 、 Figure 2 and Figure 3 As shown, the present invention provides a plate tower,

[0042] include:

[0043] A housing 1 having multiple layers of trays 11 installed therein, wherein a plurality of bubble caps 111 are fixedly installed in the middle of the upper end of each tray 11, and the bubble caps 111 are communicated with the lower end of the tray 11;

[0044] Downcomers 12 are fixedly mounted on one end of the tray 11 near the shell 1 and serve as liquid passages connecting the upper and lower trays 11. Notches are provided on the trays 11 at positions corresponding to the downcomers 12, and the downcomers 12 of two adjacent trays 11 are staggered.

[0045] An overflow weir 13, wherein the overflow weir 13 is fixedly mounted on the notch end of the tray 11;

[0046] an air outlet 14, the air outlet 14 being provided at the upper end of the housing 1 and communicating with the interior of the housing 1;

[0047] A discharge hole 15 is provided at the lower end of the housing 1 and communicates with the interior of the housing 1; an air inlet 16 and a feed hole 17 are also provided on the side of the housing 1;

[0048] A plurality of cleaning holes 18 are provided on the side of the shell 1 from top to bottom, and each cleaning hole 18 is provided between the upper and lower trays 11 .

[0049] It should be noted that during the operation of the plate tower, a mixed liquid containing methyl ethyl carbonate is added to the shell 1 of the plate tower from the feed port, and the mixed liquid will flow through the downcomer 12 and descend step by step. The plate tower will be connected to the reboiler and heated in the reboiler. At this time, the volatile liquid in the mixed liquid will evaporate into gas and move upward along the inside of the shell 1 of the plate tower. In the process of passing through the tower plate 11, it will be fully mixed with the mixed liquid through the bubble cap 111, and the overflow weir 13 is to maintain a certain thickness of the liquid phase on the tower plate 11, and finally the gas phase is discharged from the gas outlet 14, and a higher concentration of methyl ethyl carbonate is obtained from the discharge hole 15.

[0050] During the process of cleaning the interior of the plate tower, a cleaning device can be placed onto the tray 11 of each layer of the plate tower through the hole, so that each layer of the plate tower can be effectively cleaned.

[0051] The height of the overflow weir is 3-5 mm. The purpose of this is to deposit a certain thickness of mixed liquid on the tower plate so that the gas phase and liquid phase can be mixed to a certain extent without hindering the flow of gas from bottom to top.

[0052] like Figure 2 、 Figure 6 and Figure 7 As shown, the present invention also provides a plate tower cleaning device,

[0053] include:

[0054] The support seat 2 is cylindrical, and a circular receiving groove 21 is circumferentially opened in the middle position of the support seat 2. A filling airbag 3 is arranged in the receiving groove 21. The side of the filling airbag 3 is fixedly connected to an inflation tube 31 connected to the filling airbag 3. A foam delivery tube 4 passes through the middle position of the inflation tube 31. The foam delivery tube 4 is fixedly connected to the support seat 2. A foam ejection groove 22 with a return port facing upward is opened inside the support seat 2.

[0055] It should be noted that, in the process of cleaning the plate tower, the support base 2 is placed horizontally onto the tower plate 11 through the cleaning hole 18, and then gas is transported to the filling air bag 3 through the inflation tube 31. As the filling air bag 3 gradually expands, it will eventually contact the side wall of the shell 1, blocking the upper and lower parts of the shell 1, and connecting the foam delivery pipe 4 to the external foam generator. The foam generator will pass the foam containing detergent through the foam delivery pipe 4 into the foam ejection groove 22, and finally it will be ejected from the foam ejection groove 22 and gradually accumulated at the upper end of the filling air bag 3, and finally pass through the tower cover, so that the interior of the plate tower shell 1 and all parts of the tower plate 11 can be effectively cleaned.

[0056] like Figure 6 As shown, a support column 23 is provided in the middle position inside the support seat 2, and a closed slide groove 24 is provided on the side wall of the support seat 2. The opening of the closed slide groove 24 at the end away from the support column 23 is smaller, and the opening of the closed slide groove 24 at the end close to the support column 23 is larger. There are multiple closed slide grooves 24 evenly distributed along the circumference of the support seat 2, and a closing slider 25 that fits the closing slide groove 24 is slidably connected in the closed slide groove 24. A closing spring 26 is provided between the closing slider 25 and the support column 23, and the two ends of the closing spring 26 are respectively fixedly mounted on the support column 23 and the closing slider 25.

[0057] It should be noted that by increasing the pressure of the conveying gas in the filling airbag 3, the upper end of the filling airbag 3 is in close contact with the lower end of the downcomer 12. At the same time, the pressure of the gas in the airbag on the closing slider 25 will also increase, thereby pushing the closing slider 25. At the same time, the closing spring 26 will be compressed. At this time, the high-pressure gas will enter the foam ejection groove 22 through the gap between the closing slider 25 and the closing slide 24. At this time, the high-pressure gas will drive the foam containing the detergent to quickly flush the tower plate 11 and the tower cover, thereby effectively improving the cleaning efficiency.

[0058] like Figure 7 and Figure 8 As shown, a metal pull rope 32 is embedded in the side wall of the filling airbag 3 , and a plurality of the metal pull ropes 32 are evenly distributed along the circumference of the support column 23 .

[0059] It should be noted that the above technical means can effectively improve the strength of the filling airbag 3, thereby increasing the service life of the filling airbag 3.

[0060] like Figure 4 、 Figure 5 、 Figure 6 and Figure 9As shown, a plurality of nozzles 5 are fixedly mounted on the upper end of one side of the filling airbag 3, a water spray baffle 27 is provided inside the support seat 2, and the water spray baffle 27 separates a water spray chamber 221 at the lower end of the foam ejection groove 22, and a water pipe 231 communicating with the water spray chamber 221 is fixedly connected to the support column 23, and the support column 23 and the nozzle 5 are connected by a water outlet pipe 232, and the water outlet pipe 232 is communicated with the water spray chamber 221.

[0061] It should be noted that the space in the downcomer 12 is large, and the downcomer 12 can be cleaned more quickly and effectively by spraying. Water is transported to the water spray chamber 221 through the water supply pipe 231, and then the water enters the water outlet pipe 232 from the water spray chamber 221, and then enters the nozzle 5 from the water outlet pipe 232, and the side wall of the downcomer 12 is sprayed and cleaned through the nozzle 5.

[0062] like Figure 4 、 Figure 5 、 Figure 6 and Figure 9 As shown, the water spray baffle 27 is slidably connected to the support column 23 in the vertical direction. The water spray baffle 27 is a double layer, and the upper water spray baffle 27 and the lower water spray baffle 27 are fixedly connected. A barrier cavity 271 is formed between the two water spray baffles 27, and the lower water spray baffle 27 is stepped. The interval between the two layers of water spray baffles 27 close to one end of the water supply pipe 231 is smaller, and the interval between the two layers of water spray baffles 27 away from one end of the water supply pipe 231 is larger. A return spring 28 is fixedly connected between the upper water spray baffle 27 and the side wall of the foam ejection groove 22. A foam output pipe 233 is also fixedly connected to the support column 23. The foam output pipe 233 is communicated with the barrier cavity 271, and the foam output pipe 233 is connected to the nozzle 5.

[0063] It should be noted that in the process of injecting water into the water spray chamber 221 through the water supply pipe 231, the water flow will first apply pressure to the water spray baffle 27 below, and then the water spray baffle 27 will move upward, and the return spring 28 will be compressed. At the same time, the water spray chamber 221 will be connected to the water outlet pipe 232, so that the water flow can enter the water outlet pipe 232 from the water spray chamber 221, and at the same time, the water spray baffle 27 will be pushed to the position corresponding to the blocking chamber 271 and the foam delivery pipe 4. At this time, the foam carrying the detergent will enter the blocking chamber 271 and enter the foam output pipe 233 from the blocking chamber 271. Finally, the foam carrying the detergent will enter the nozzle 5 and be sprayed onto the wall of the downcomer 12 along with the water flow, thereby improving the cleaning ability of the downcomer 12.

[0064] like Figure 4 、 Figure 5 、 Figure 6and Figure 9 As shown, the nozzle 5 includes a base 51 and a spraying portion 52. The base 51 is provided with a water inlet cavity 511 and is fixedly connected to the filling airbag 3. The water inlet cavity 511 is connected to the water outlet pipe 232. The spraying portion 52 is fixedly installed at the upper end of the base 51. A water spraying trough 521 is provided in the spraying portion 52.

[0065] It should be noted that when the water flows out from the nozzle 5, the water flows first into the water inlet chamber 511, and then enters the water spraying trough 521 through the water inlet chamber 511, and then is sprayed out through the water spraying trough 521, thereby cleaning the pipe wall of the downcomer 12.

[0066] like Figure 4 、 Figure 5 、 Figure 6 and Figure 9 As shown, the water spraying grooves 521 are inclined, and the water spraying grooves 521 are evenly distributed along the circumference of the spraying portion 52 of the nozzle 5.

[0067] It should be noted that, through the above technical solution, the water flow of the water spray trough 521 is sprayed obliquely onto the wall of the downcomer 12. This has the advantage of significantly increasing the area covered by the water flow cleaning, thereby improving the efficiency of cleaning the downcomer 12.

[0068] like Figure 4 、 Figure 5 、 Figure 6 and Figure 9 As shown, a foam flow channel 53 is provided in the base 51 and the injection portion 52 . The foam flow channel 53 in the base 51 is communicated with the foam output pipe 233 , and the foam flow channel 53 in the injection portion 52 is communicated with the water spray trough 521 through a mixing trough 522 .

[0069] It should be noted that when the foam enters the water spray trough 521 through the mixing trough 522, the water flow in the water spray trough 521 will carry the foam with it. At the same time, the above method can produce a more stable mixing ratio between the water flow and the detergent in the foam.

[0070] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., which indicate orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation and a specific orientation structure and operation. Therefore, they cannot be understood as limitations on the present invention. In addition, "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0071] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0072] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A plate tower, characterized in that: include: A shell (1), wherein multiple layers of trays (11) are installed at intervals in the shell (1), and a plurality of bubble caps (111) are fixedly installed in the middle position of the upper end of each tray (11), and the bubble caps (111) are communicated with the lower end of the tray (11); A downcomer (12), the downcomer (12) being fixedly mounted on one end of the tower plate (11) close to the shell (1) and serving as a liquid passage connecting the upper and lower tower plates (11). The tower plate (11) is provided with a notch at a position corresponding to the downcomer (12), and the downcomers (12) of two upper and lower adjacent tower plates (11) are staggered. an overflow weir (13), wherein the overflow weir (13) is fixedly mounted on the notched end of the tower plate (11); an air outlet (14), the air outlet (14) being provided at the upper end of the housing (1) and communicating with the interior of the housing (1); A discharge hole (15), the discharge hole (15) is provided at the lower end of the shell (1) and communicates with the interior of the shell (1); an air inlet (16) and a feed hole (17) are also provided on the side of the shell (1); A plurality of cleaning holes (18) are provided on the side of the shell (1) from top to bottom, and each cleaning hole (18) is provided between the upper and lower tower plates (11).

2. A plate tower according to claim 1, characterized in that The height of the overflow weir is 3-5 mm.

3. A plate tower cleaning device, characterized in that: The plate tower cleaning device is applicable to the plate tower in claim 1; The invention comprises a support seat (2), wherein the support seat (2) is cylindrical, and a circular receiving groove (21) is circumferentially provided at the middle position of the support seat (2), and a filling air bag (3) is provided in the receiving groove (21), and a side of the filling air bag (3) is fixedly connected to an inflation tube (31) connected to the filling air bag (3), and a foam delivery tube (4) passes through the middle position of the inflation tube (31), and the foam delivery tube (4) is fixedly connected to the support seat (2), and a foam ejection groove (22) with a return port facing upward is provided inside the support seat (2).

4. A plate tower cleaning device according to claim 3, characterized in that: A support column (23) is provided at the inner middle position of the support seat (2), and a closed slide groove (24) is provided on the side wall of the support seat (2), the opening of the closed slide groove (24) at one end away from the support column (23) is smaller, and the opening of the closed slide groove (24) at one end close to the support column (23) is larger, and a plurality of closed slide grooves (24) are evenly distributed along the circumference of the support seat (2), and a closed slider (25) that fits with the closed slide groove (24) is slidably connected in the closed slide groove (24), and a closing spring (26) is provided between the closing slider (25) and the support column (23), and the two ends of the closing spring (26) are fixedly mounted on the support column (23) and the closing slider (25) respectively.

5. A plate tower cleaning device according to claim 4, characterized in that: A metal pull rope (32) is embedded in the side wall of the filling airbag (3), and a plurality of the metal pull ropes (32) are evenly distributed along the circumference of the support column (23).

6. A plate tower cleaning device according to claim 5, characterized in that: A plurality of nozzles (5) are fixedly mounted on the upper end of one side of the filling airbag (3); a water spray baffle (27) is provided inside the support seat (2); the water spray baffle (27) separates a water spray chamber (221) at the lower end of the foam spraying groove (22); a water pipe (231) communicating with the water spray chamber (221) is fixedly connected to the support column (23); the support column (23) and the nozzle (5) are connected via a water outlet pipe (232); and the water outlet pipe (232) is communicated with the water spray chamber (221).

7. A plate tower cleaning device according to claim 6, characterized in that: The water spray baffle (27) is connected to the support column (23) in a sliding manner in the vertical direction. The water spray baffle (27) is double-layered, and the upper water spray baffle (27) and the lower water spray baffle (27) are fixedly connected. A barrier cavity (271) is formed between the two water spray baffles (27). The lower water spray baffle (27) is stepped. The interval between the two water spray baffles (27) near one end of the water delivery pipe (231) is smaller, and the water spray baffle (27) at a distance is smaller. The distance between the two layers of water spray baffles (27) at one end of the water delivery pipe (231) is relatively large. A return spring (28) is fixedly connected between the water spray baffle (27) located on the upper layer and the side wall of the foam spraying groove (22). A foam output pipe (233) is also fixedly connected to the support column (23). The foam output pipe (233) is communicated with the barrier cavity (271) and is connected to the nozzle (5).

8. A plate tower cleaning device according to claim 7, characterized in that: The nozzle (5) comprises a base (51) and a spraying portion (52); the base (51) is provided with a water inlet cavity (511) and is fixedly connected to the filling air bag (3); the water inlet cavity (511) is communicated with the water outlet pipe (232); the spraying portion (52) is fixedly mounted on the upper end of the base (51); and a water spraying trough (521) is provided in the spraying portion (52).

9. A plate tower cleaning device according to claim 8, characterized in that: The water spraying grooves (521) are inclined, and the water spraying grooves (521) are evenly distributed along the circumference of the spraying portion (52) of the nozzle (5).

10. The plate tower cleaning equipment according to claim 9, characterized in that: A foam flow channel (53) is provided in the base (51) and the ejection portion (52); the foam flow channel (53) in the base (51) is communicated with the foam output pipe (233); and the foam flow channel (53) in the ejection portion (52) is communicated with the water spraying trough (521) via a mixing trough (522).

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