Water bath type washing spray tower for coking waste gas treatment

Abstract

The invention discloses a water bath type washing spray tower for coking waste gas treatment, and relates to the technical field of coking waste gas treatment.The water bath type washing spray tower comprises a spray tower body, a wire mesh demister, a cleaning device, a spray device, a filler layer, a gas inlet pipe and an overflow pipe are sequentially arranged in the spray tower body from top to bottom, and one end of the gas inlet pipe penetrates through the side wall of the spray tower body to the other side; the inner bottom of the spraying tower body is filled with washing liquid, waste gas is directly introduced to the lower portion of the washing liquid, the waste gas can make full contact and react with the washing liquid, then the waste gas overflows from the washing liquid to make reverse contact with liquid sprayed out of the spraying device, and the waste gas makes contact with the liquid sprayed out of the spraying device through the filler layer; the contact time of the washing liquid and the waste gas is further prolonged, so that the treatment effect on the waste gas is improved, finally, water mist and particles which do not react completely in the waste gas are intercepted through the wire mesh demister, blockage of follow-up pipelines and equipment is avoided, and normal operation of the follow-up equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of coking waste gas treatment, and in particular to a water bath type washing spray tower for coking waste gas treatment. Background Art

[0002] Coking waste gas is a complex waste gas generated during the production process of coking plants. Its main components include volatile organic compounds (VOCs), sulfides, nitrogen oxides, and dust. These waste gases need to be treated before discharge, otherwise they will cause serious harm to the environment and human health.

[0003] Coking waste gas (i.e., coking waste gas) is generally treated by a washing purification process, specifically a washing process in which spray water contacts the coking waste gas in reverse, and the spray water contacts the coking waste gas in the filler. However, when the above process is used to treat the waste gas, the contact time between the coking waste gas and the washing liquid is short and the contact effect is poor, so that the washing liquid cannot fully absorb the harmful substances that need to be treated in the coking waste gas, such as some organic matter and inorganic matter containing naphthalene and ammonium salts, which can easily cause blockage of the collection pipes and equipment, making the subsequent treatment equipment unable to operate for a long period of time. Summary of the Invention

[0004] The purpose of the present invention is to provide a water bath type washing spray tower for treating coking waste gas, which solves the technical problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A water bath type washing spray tower for coking waste gas treatment comprises a spray tower body, and an air outlet is provided on the top of the spray tower body. The spray tower body is provided with a wire mesh demister, a cleaning device for flushing the wire mesh demister, a spray device for spraying the waste gas, a packing layer, an air inlet pipe for the waste gas to enter the spray tower body and an overflow pipe for the liquid inside the spray tower body to flow out. One end of the air inlet pipe passes through the side wall of the spray tower body and extends to the outside of the spray tower body. The inner bottom of the spray tower body is filled with washing liquid, and the overflow pipe is used to discharge the washing liquid that exceeds a preset depth. The other end of the air inlet pipe extends below the liquid level of the washing liquid. The end of the air inlet pipe extending below the liquid level of the washing liquid is provided with a bubbling structure, and bubbles are generated when the waste gas passes through the bubbling structure.

[0006] As a preferred solution of the present invention, the bubbling structure includes a plurality of serrations, and the plurality of serrations are evenly distributed at the end of the air inlet pipe around the center of the air inlet pipe.

[0007] As a preferred solution of the present invention, an annular plate is threadedly sleeved on the end of the air inlet pipe, and a plurality of the serrations are evenly distributed on the bottom of the annular plate.

[0008] As a preferred solution of the present invention, the internal rotation of the spray tower body is provided with a movable structure, the bottom of the movable structure is provided with an extrusion structure for driving the movable structure to move up and down, and the movable structure is used to squeeze the exhaust gas discharged from the bottom of the intake pipe during the up and down movement, and the peripheral side of the movable structure is engaged with an annular internal gear for stirring the washing liquid, and the annular internal gear is rotatably connected to the inner wall of the spray tower body.

[0009] As a preferred solution of the present invention, the movable structure includes a connecting shaft that is sealed and rotatably connected to the bottom of the spray tower body, and the bottom of the connecting shaft passes through the bottom of the spray tower body and is connected to a driving device, the top of the connecting shaft is slidingly sleeved with an annular external gear that meshes with the annular internal gear, and the radius of the root circle of the annular external gear is larger than the radius of the air intake pipe, the top of the connecting shaft is connected to a spring, the bottom of the annular external gear is provided with a slide groove, and the top of the connecting shaft is slidably inserted in the slide groove, and the spring is connected to the inner bottom of the slide groove.

[0010] As a preferred solution of the present invention, a plurality of conical protrusions are provided on the top of the annular external gear, and the plurality of conical protrusions are evenly distributed around the center of the annular external gear, and the plurality of serrations form a ring around the intake pipe, and the plurality of conical protrusions are all located on the inner side of the ring.

[0011] As a preferred solution of the present invention, the annular external gear includes an outer gear ring, a column and multiple connecting plates. The column is concentrically arranged with the outer gear ring through the multiple connecting plates, and the sliding groove is opened at the bottom of the column.

[0012] As a preferred solution of the present invention, a plurality of arc-shaped guide plates are evenly arranged on the top of the outer gear ring, and the distance between the inner arc surfaces on the plurality of arc-shaped guide plates and the arc-shaped guide plates away from the inner arc surfaces decreases downward in the vertical direction.

[0013] As a preferred solution of the present invention, the extrusion structure includes a top rod that is sealed and slidably arranged at the bottom of the spray tower body, and the top of the top rod is slidably connected to the bottom of the column, the bottom of the top rod passes through the bottom of the spray tower body, and is connected to a semi-circular plate in a semi-cylindrical shape, and the bottom of the spray tower body is provided with a rotating device through a bracket, and the rotating device is connected to an extrusion strip.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention allows the waste gas to directly pass into the bottom of the washing liquid so that the waste gas can fully contact and react with the washing liquid. The waste gas then overflows from the washing liquid and contacts the liquid sprayed by the spray device in reverse, and contacts the liquid sprayed by the spray device through the packing layer, further increasing the contact time between the washing liquid and the waste gas, thereby improving the treatment effect of the waste gas. Finally, the wire mesh demister is used to intercept water mist and unreacted particulate matter in the waste gas, avoiding blockage of subsequent pipelines and equipment and ensuring the normal operation of subsequent equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0016] Figure 1 The present invention provides a side cross-sectional structural schematic diagram of a water bath type washing spray tower for treating coking waste gas; Figure 2 The present invention provides a schematic diagram of the overall structure of a water bath type washing spray tower for treating coking waste gas; Figure 3 The present invention provides Figure 1 A schematic diagram of the structure of part A shown in FIG; Figure 4 The present invention provides a partial cross-sectional structural view of a water bath type washing spray tower for treating coking waste gas.

[0017] The numbers in the figure represent the following: 1. Spray tower; 2. Wire mesh demister; 3. Cleaning device; 4. Spray device; 5. Packing layer; 6. Packing layer; 8. Overflow pipe; 9. Bubble structure; 10. Movable structure; 11. Extrusion structure; 12. Ring internal gear; 901, sawtooth; 902, annular plate; 101, connecting shaft; 102, annular outer gear; 103, spring; 104, slide groove; 105, conical protrusion; 106, outer gear ring; 107, cylinder; 108, connecting plate; 109, arc-shaped guide plate; 111, ejector rod; 112, semicircular plate; 113, rotating device; 114, extrusion strip. DETAILED DESCRIPTION

[0018] 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] like Figures 1 to 4 As shown, the present invention provides a water bath type washing spray tower for coking waste gas treatment, comprising a spray tower body 1, and an air outlet is provided at the top of the spray tower body 1, and a wire mesh demister 2, a cleaning device 3 for flushing the wire mesh demister 2, a spray device 4 for spraying the waste gas, a packing layer 5, an air inlet pipe 6 for the waste gas to enter the spray tower body 1 and an overflow pipe 8 for the liquid inside the spray tower body 1 to flow out are provided in sequence from top to bottom. One end of the air inlet pipe 6 passes through the side wall of the spray tower body 1 and extends to the outside of the spray tower body 1. The inner bottom of the spray tower body 1 is filled with washing liquid, and the overflow pipe 8 is used to discharge the washing liquid that exceeds a preset depth. The other end of the air inlet pipe 6 extends below the liquid level of the washing liquid, and the end of the air inlet pipe 6 extending below the liquid level of the washing liquid is provided with a bubbling structure 9, and bubbles are generated when the waste gas passes through the bubbling structure 9.

[0021] The bubbling structure 9 includes a plurality of serrations 901 , and the plurality of serrations 901 are evenly distributed around the center of the air inlet pipe 6 at the end of the air inlet pipe 6 .

[0022] When the present application is in use, the waste gas (i.e., coking waste gas) is introduced into the washing liquid (a liquid used to produce a chemical reaction with the waste gas to treat the waste gas) below the liquid surface through the air inlet pipe 6, so that the waste gas is fully in contact with the washing liquid. Under the subsequent squeezing of the waste gas, the waste gas flows out of the washing liquid and enters the spray tower body 1. Then the waste gas moves upward, and at the same time, the spray device 4 sprays liquid downward (the same as the washing liquid filled at the bottom of the spray tower body 1, that is, the sprayed liquid is also washing liquid), so that the waste gas is in reverse contact with the liquid sprayed by the spray device 4, and the waste gas will also contact the liquid at the spray point of the spray device 4 when passing through the packing layer 5, so that the waste gas can contact the washing liquid at the bottom of the spray tower body 1 and the liquid sprayed by the spray device 4 in turn, thereby increasing the contact time of the waste gas with the washing liquid (including the liquid sprayed by the spray device 4), so that the waste gas is in full contact with the washing liquid (including the liquid sprayed by the spray device 4), thereby improving the treatment effect of the waste gas.

[0023] When the treated exhaust gas passes through the wire mesh demister 2, the water mist and particulate matter in the exhaust gas are retained on the wire mesh demister 2, avoiding blockage of the equipment for subsequent treatment of the exhaust gas and the pipeline for transporting the exhaust gas, thereby ensuring the normal operation of subsequent equipment.

[0024] By setting up the bubbling structure 9, when the exhaust gas passes through the edge of the intake pipe 6 into the washing liquid and passes through multiple serrations 901, bubbles appear when the exhaust gas contacts the washing liquid, thereby improving the contact effect between the exhaust gas and the washing liquid, and then improving the treatment effect of the exhaust gas.

[0025] When the depth of the washing liquid at the bottom of the spray tower body 1 exceeds a set depth, the excess washing liquid flows out to the outside of the spray tower body 1 through the overflow pipe 8 .

[0026] The cleaning device 3 is used to automatically flush the wire mesh demister 2 .

[0027] In this embodiment, the spray tower body 1 is further provided with a liquid inlet pipe (not shown in the figure) for filling the interior of the spray tower body 1 with washing liquid.

[0028] In this embodiment, the wire mesh demister 2, the cleaning device 3, the spraying device 4 and the packing layer 5 are all existing technologies, and the technical principles will not be elaborated on here.

[0029] An annular plate 902 is threadedly sleeved on the end of the air inlet pipe 6 , and a plurality of serrations 901 are evenly distributed on the bottom of the annular plate 902 .

[0030] By rotating the annular plate 902, the distance between the saw teeth 901 and the end of the air inlet pipe 6 changes, so that the depth of the saw teeth 901 below the liquid surface of the washing liquid can be adjusted more conveniently. The depth of the saw teeth 901 can be adjusted according to the situation inside the spray tower body 1, thereby improving the convenience and practicality of use.

[0031] A movable structure 10 is provided for rotation inside the spray tower body 1, and an extrusion structure 11 is provided at the bottom of the movable structure 10 for driving the movable structure 10 to move up and down. The movable structure 10 is used to squeeze the exhaust gas discharged from the bottom of the air intake pipe 6 during the up and down movement. The peripheral side of the movable structure 10 is engaged with an annular internal gear 12 for stirring the washing liquid, and the annular internal gear 12 is rotatably connected to the inner wall of the spray tower body 1.

[0032] Driven by the extrusion structure 11, the movable structure 10 moves up and down in the vertical direction, thereby squeezing the exhaust gas discharged through the bottom of the intake pipe 6, so that the exhaust gas can increase its flow rate when the movable structure 10 moves upward, and more exhaust gas passes through the serrations 901 to generate bubbles, further improving the contact effect between the exhaust gas and the washing liquid, thereby further improving the treatment effect of the exhaust gas.

[0033] The annular internal gear 12 is driven to rotate by the movable structure 10. Since the annular internal gear 12 has gear teeth, the annular internal gear 12 can stir the washing liquid during the rotation process. At the same time, the rotation of the movable structure 12 itself can also stir the washing liquid, so that the washing liquid inside the spray tower body 1 can fully contact with the exhaust gas, avoiding the washing liquid that is far away from the bottom of the intake pipe 6 from being difficult to contact with the exhaust gas.

[0034] The movable structure 10 includes a connecting shaft 101 which is sealed and rotatably connected to the bottom of the spray tower body 1, and the bottom of the connecting shaft 101 passes through the bottom of the spray tower body 1 to the other side and is connected to a driving device. The top of the connecting shaft 101 is slidably sleeved with an annular external gear 102 which meshes with the annular internal gear 12, and the radius of the root circle of the annular external gear 102 is greater than the radius of the intake pipe 6. The top of the connecting shaft 101 is connected to a spring 103, and the bottom of the annular external gear 102 is provided with a slide groove 104, and the top of the connecting shaft 101 is slidably inserted in the slide groove 104, and the spring 103 is connected to the inner bottom of the slide groove 104.

[0035] The movable structure 10 drives the connecting shaft 101 to rotate through a driving device such as a motor. Since the connecting shaft 101 is slidably inserted in the slide groove 104, that is, the connecting shaft 101 slides along the slide groove 104 without rotating, the connecting shaft 101 drives the annular outer gear 102 to rotate, and then drives the annular inner gear 12 to rotate. The rotation of the annular outer gear 102 and the annular inner gear 12 coordinates to stir the washing liquid, so that the washing liquid inside the spray tower body 1 can be fully used, avoiding the washing liquid far away from the bottom of the intake pipe 6 from coming into contact with the exhaust gas.

[0036] When the extrusion structure 11 squeezes the movable structure 10, the annular outer gear 102 moves upward and causes the spring 103 to be stretched. The annular outer gear 102 squeezes the exhaust gas discharged from the bottom of the intake pipe 6, causing the exhaust gas to accelerate and concentrate through the serrations 901, thereby improving the foaming effect of the washing liquid and thereby improving the treatment effect of the exhaust gas. The connecting shaft 101 slides along the slide groove 104, avoiding interference with the connection relationship between the connecting shaft 101 and the annular outer gear 102.

[0037] A plurality of conical protrusions 105 are provided on the top of the annular outer gear 102 , and the plurality of conical protrusions 105 are evenly distributed around the center of the annular outer gear 102 , and the plurality of serrations 901 form a ring around the intake pipe 6 , and the plurality of conical protrusions 105 are all located on the inner side of the ring.

[0038] That is, the multiple conical protrusions 105 are arranged in a ring shape, so that part of the exhaust gas discharged from the intake pipe 6 will be divided by the multiple conical protrusions 105, further improving the foaming effect of the washing liquid.

[0039] The annular external gear 102 includes an outer gear ring 106 , a column 107 and a plurality of connecting plates 108 . The column 107 is concentrically arranged with the outer gear ring 106 via the plurality of connecting plates 108 , and the sliding groove 104 is opened at the bottom of the column 107 .

[0040] A larger gap is created between the outer gear ring 106 and the cylinder 107 to reduce the space occupied by the annular outer gear 102 at the bottom of the intake pipe 6 , thereby facilitating contact between the exhaust gas and the scrubbing liquid.

[0041] When the annular outer gear 102 rotates, the plurality of connecting plates 108 rotate synchronously, thereby stirring the washing liquid, so that the washing liquid can be used more effectively and fully.

[0042] Furthermore, multiple connecting plates 108 can be arranged in an inclined shape so that when the multiple connecting plates 108 rotate, they guide the washing liquid under the annular outer gear 102 to move upward to the annular outer gear 102, similar to the rotation of a fan, so that the washing liquid is fully in contact with the exhaust gas, and the washing liquid flows in the direction of the intake pipe 6, so as to improve the use effect of the washing liquid.

[0043] A plurality of arc-shaped guide plates 109 are evenly arranged on the top of the outer gear ring 106 , and the distances between the inner arc surfaces of the plurality of arc-shaped guide plates 109 and the arc-shaped guide plates 109 away from the inner arc surfaces decrease downward along the vertical direction.

[0044] When the outer gear 106 rotates, the multiple arc guide plates 109 rotate synchronously. Through the inner arc surface of the arc guide plate 109, the washing liquid flows toward the intake pipe 6 under the guidance of the multiple arc guide plates 109, so that the washing liquid is fully in contact with the exhaust gas.

[0045] The extrusion structure 11 includes a top rod 111 that is sealed and slidably arranged at the bottom of the spray tower body 1, and the top of the top rod 111 is slidably connected to the bottom of the column 107. The bottom of the top rod 111 passes through the bottom of the spray tower body 1 and is connected to a semi-cylindrical semi-circular plate 112. The bottom of the spray tower body 1 is provided with a rotating device 113 through a bracket, and the rotating device 113 is connected to an extrusion bar 114.

[0046] The rotating device 113 drives the extrusion bar 114 to rotate, and the extrusion bar 114 rotates around a horizontal straight line, so that the extrusion bar 114 repeatedly squeezes the semicircular surface of the semicircular plate 112 upward at the same interval, so that the semicircular plate 112 drives the push rod 111 to move upward, and then pushes the bottom of the column 107 to make the column 107 move upward, and the spring 103 is stretched.

[0047] When the extrusion strip 114 is out of contact with the semicircular plate 112, the column 107 moves downward under the elastic force of the spring 103, and drives the push rod 111 to move downward and reset. The push rod 111 presses the column 107 upward to squeeze the exhaust gas discharged from the intake pipe 6, so that the exhaust gas is accelerated to pass through the serrations 901, so that the exhaust gas and the washing liquid are fully in contact, thereby improving the treatment effect of the exhaust gas.

[0048] When the column 107 rotates, the push rod 107 slides along the bottom of the column 107 to avoid interference with the rotation of the column 107.

[0049] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and do not impose any form of limitation on the implementation methods of the technology of the present invention. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0050] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can also make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A water bath type washing spray tower for treating coking waste gas, comprising a spray tower body (1), wherein the top of the spray tower body (1) is provided with an air outlet, characterized in that: The spray tower body (1) is provided with a wire mesh demister (2), a cleaning device (3) for flushing the wire mesh demister (2), a spray device (4) for spraying waste gas, a packing layer (5), an air inlet pipe (6) for waste gas to enter the spray tower body (1), and an overflow pipe (8) for liquid inside the spray tower body (1) to flow out, from top to bottom. One end of the air inlet pipe (6) passes through the side wall of the spray tower body (1) and extends to the outside of the spray tower body (1). The inner bottom of the spray tower body (1) is filled with washing liquid, and the overflow pipe (8) is used to discharge washing liquid exceeding a preset depth. The other end of the air inlet pipe (6) extends below the liquid surface of the washing liquid. The end of the air inlet pipe (6) extending below the liquid surface of the washing liquid is provided with a bubbling structure (9), and bubbles are generated when the waste gas passes through the bubbling structure (9).

2. The water bath type washing spray tower for coking waste gas treatment according to claim 1, characterized in that: The bubbling structure (9) comprises a plurality of saw teeth (901), and the plurality of saw teeth (901) are evenly distributed at the end of the air intake pipe (6) around the center of the air intake pipe (6).

3. The water bath type washing spray tower for coking waste gas treatment according to claim 2, characterized in that: An annular plate (902) is threadedly sleeved on the end of the air inlet pipe (6), and a plurality of saw teeth (901) are evenly distributed on the bottom of the annular plate (902).

4. The water bath type washing spray tower for coking waste gas treatment according to claim 1, characterized in that: The spray tower body (1) is internally rotatably provided with a movable structure (10), the bottom of the movable structure (10) is provided with an extrusion structure (11) for driving the movable structure (10) to move up and down, and the movable structure (10) is used to squeeze the exhaust gas discharged from the bottom of the intake pipe (6) during the up and down movement, and the peripheral side of the movable structure (10) is meshed with an annular internal gear (12) for stirring the washing liquid, and the annular internal gear (12) is rotatably connected to the inner wall of the spray tower body (1).

5. The water bath type washing spray tower for coking waste gas treatment according to claim 4, characterized in that: The movable structure (10) includes a connecting shaft (101) that is sealed and rotatably connected to the bottom of the spray tower body (1), and the bottom of the connecting shaft (101) passes through the bottom of the spray tower body (1) and is connected to a driving device. The top of the connecting shaft (101) is slidably sleeved with an annular outer gear (102) that meshes with an annular inner gear (12), and the radius of the tooth root circle of the annular outer gear (102) is greater than the radius of the air intake pipe (6). The top of the connecting shaft (101) is connected to a spring (103), and the bottom of the annular outer gear (102) is provided with a slide groove (104), and the top of the connecting shaft (101) is slidably inserted in the slide groove (104), and the spring (103) is connected to the inner bottom of the slide groove (104).

6. The water bath type washing spray tower for coking waste gas treatment according to claim 5, characterized in that: A plurality of conical protrusions (105) are provided on the top of the annular external gear (102), and the plurality of conical protrusions (105) are evenly distributed around the center of the annular external gear (102), and the plurality of saw teeth (901) form a ring around the intake pipe (6), and the plurality of conical protrusions (105) are all located on the inner side of the ring.

7. The water bath type washing spray tower for coking waste gas treatment according to claim 5, characterized in that: The annular outer gear (102) comprises an outer gear ring (106), a column (107) and a plurality of connecting plates (108); the column (107) is concentrically arranged with the outer gear ring (106) via the plurality of connecting plates (108), and the slide groove (104) is opened at the bottom of the column (107).

8. The water bath type washing spray tower for coking waste gas treatment according to claim 7, characterized in that: A plurality of arc-shaped guide plates (109) are evenly arranged on the top of the outer gear ring (106), and the spacing between the inner arc surfaces on the plurality of arc-shaped guide plates (109) and the arc-shaped guide plates (109) that are away from the inner arc surfaces decreases downward in the vertical direction.

9. The water bath type washing spray tower for coking waste gas treatment according to claim 7, characterized in that: The extrusion structure (11) comprises a top rod (111) sealingly and slidingly arranged at the bottom of the spray tower body (1), and the top of the top rod (111) is slidably connected to the bottom of the column (107), the bottom of the top rod (111) passes through the bottom of the spray tower body (1) and is connected to a semi-cylindrical semi-circular plate (112), and the bottom of the spray tower body (1) is provided with a rotating device (113) through a bracket, and the rotating device (113) is connected to an extrusion strip (114).

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