Spraying desulfurization mechanism and ship tail gas purification equipment comprising same

Abstract

The invention discloses a spraying desulfurization mechanism and ship tail gas purification equipment comprising the same, and relates to the technical field of purification equipment.The equipment comprises a transmission cylinder, the transmission cylinder is located above a desulfurization tower, the transmission cylinder penetrates into the desulfurization tower, the transmission cylinder is rotationally connected with the desulfurization tower, and the transmission cylinder is located above the desulfurization tower; a plurality of groups of spray headers are mounted on the outer wall of the transmission cylinder in the circumferential direction at equal intervals, an inner cavity of the transmission cylinder is communicated with inner cavities of the plurality of groups of spray headers, and the plurality of groups of spray headers are all located in the desulfurization tower. Through the spraying desulfurization mechanism, impurities in tail gas can be filtered, the filtered tail gas is subjected to spraying purification, and meanwhile, impurities adhered to the inner wall of the desulfurization tower and impurities generated by filtering are cleaned, so that the adverse effect of the impurities on the purification efficiency of the tail gas is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of purification equipment, in particular to a spray desulfurization mechanism and ship exhaust purification equipment containing the mechanism. Background Art

[0002] Ship exhaust is the waste gas produced by the combustion of fuel in the ship's internal combustion engine. It contains a variety of harmful substances such as nitrogen oxides, sulfur oxides, particulate matter, etc., which will pose a threat to human health and the ecological environment. Therefore, it is necessary to purify the ship's exhaust through purification equipment to prevent the ship's exhaust from polluting the surrounding environment. Existing ship exhaust purification equipment usually adopts desulfurization towers or scrubbers to desulfurize and purify the harmful substances in the ship's exhaust by spray desulfurization to reduce their harm to the environment and human body.

[0003] During use, existing desulfurization towers or scrubbers will desulfurize and purify the ship's exhaust gas in an open-cycle desulfurization or closed-cycle desulfurization manner, depending on the navigation area of ​​the ship. However, during use, the ship's exhaust gas contains impurities formed by sulfur oxides, nitrogen oxides, particulate matter and other incompletely burned fuel components. When these impurities adhere and accumulate on the inner wall of the desulfurization tower or scrubber, the efficiency of the ship's exhaust gas purification will be greatly reduced. Based on this, a spray desulfurization mechanism and a ship exhaust gas purification equipment containing the mechanism are now provided to eliminate the disadvantages of the existing devices. Summary of the Invention

[0004] The object of the present invention is to provide a spray desulfurization mechanism and a ship exhaust gas purification device containing the mechanism to solve the problems in the background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A spray desulfurization mechanism includes a transmission cylinder, which is located above a desulfurization tower. The transmission cylinder extends into the interior of the desulfurization tower and is rotatably connected to the desulfurization tower. A plurality of groups of spray heads are equidistantly installed on the outer wall of the transmission cylinder. The inner cavity of the transmission cylinder and the inner cavities of the plurality of groups of spray heads are interconnected, and the plurality of groups of spray heads are all located inside the desulfurization tower.

[0006] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions: In an optional solution: the spray desulfurization mechanism further includes: A filter assembly provided on the transmission cylinder; The filter assembly includes: A filter screen cylinder is rotatably sleeved on the outer wall of the transmission cylinder, wherein the outer wall of the filter screen cylinder is fixedly connected with a plurality of material guide scrapers at equal intervals in the circumferential direction, and the plurality of material guide scrapers are in contact with the inner wall of the desulfurization tower; The transmission cylinder is provided with a feeding assembly; A transmission assembly is provided on the transmission cylinder.

[0007] In an optional solution, the feed assembly includes: A first infusion tube is arranged above the transmission cylinder, and the bottom end of the first infusion tube is fixedly connected to a connecting ring, the outer wall of the connecting ring is integrally formed with a limiting ring, and the transmission cylinder is rotatably sleeved on the outer walls of the connecting ring and the limiting ring.

[0008] In an optional solution, the transmission assembly includes: A first bevel gear is provided on the outside of the transmission cylinder. The first bevel gear is located inside the desulfurization tower. The outer wall of the first bevel gear is symmetrically meshed with two bevel gear rings. One of the bevel gear rings is fixed to the outer wall of the transmission cylinder. The other bevel gear ring is rotatably sleeved on the outer wall of the transmission cylinder. The other bevel gear ring is fixedly connected to the filter cylinder. The first bevel gear is provided with a first driving assembly.

[0009] In an optional solution, the first driving component includes: A first transmission rod is fixedly connected to the side of the first bevel gear away from the transmission cylinder, the first transmission rod is rotatably connected to the desulfurization tower, a drive motor is provided on the side of the first transmission rod away from the first bevel gear, and the drive motor is installed on one side outer wall of the desulfurization tower.

[0010] A ship exhaust purification device includes the above-mentioned spray desulfurization mechanism: further comprising a desulfurization tower, wherein an air intake pipe and an exhaust pipe are symmetrically mounted on the outer wall of the desulfurization tower; a second liquid discharge pipe is mounted at the bottom end of the desulfurization tower; the inner cavities of the air intake pipe, the exhaust pipe, and the second liquid discharge pipe are all interconnected with the inner cavity of the desulfurization tower; electric valves are mounted at the junctions of the desulfurization tower with the air intake pipe, the exhaust pipe, and the second liquid discharge pipe; the electric valves are electrically connected to an external controller via a wire; and a switching mechanism for switching between an open cycle and a closed cycle is provided on the desulfurization tower; The switching mechanism includes: Two fixed frames are symmetrically fixedly connected to the outer wall of the desulfurization tower. The two fixed frames are respectively located at the upper and lower ends of the desulfurization tower. The two fixed frames are respectively fixedly connected to the first liquid infusion pipe and the second liquid discharge pipe. The interior of the two fixed frames is rotatably connected to a switching disk. The interior of the switching disk is provided with a liquid guide groove, and the inner wall of the liquid guide groove is L-shaped. The two fixed frames are respectively provided with an infusion assembly for transporting liquid; The desulfurization tower is provided with a second driving assembly for driving the switching disk to rotate.

[0011] In an optional solution, the infusion assembly includes: Two second infusion tubes are symmetrically fixedly connected to the outer wall of one fixed frame, and two first drainage tubes are symmetrically fixedly connected to the outer wall of the other fixed frame. One of the second infusion tubes and one of the first drainage tubes are both connected to the inner cavity of the liquid guide groove.

[0012] In an optional solution, the second drive assembly includes: A double-headed motor is installed on the outer wall of one end of the desulfurization tower through a fixed seat, and two second transmission rods are symmetrically provided at one end of the desulfurization tower. The two second transmission rods are fixedly connected to the two output ends of the double-headed motor respectively, and the two second transmission rods are fixedly connected to the second bevel gear at one end away from the double-headed motor. The outer wall of the second bevel gear is meshed with the third bevel gear. The third bevel gear is located at one end of the fixed frame, and the third bevel gear is fixedly connected to the switching disk.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can filter impurities in the tail gas through the spray desulfurization mechanism, and spray the filtered tail gas for purification. At the same time, the impurities adhering to the inner wall of the desulfurization tower and the impurities generated by the filtration are cleaned, so as to avoid the adverse effects of impurities on the purification efficiency of the tail gas.

[0014] 2. The present invention can, through a switching mechanism, desulfurize and purify the tail gas by open-cycle desulfurization or closed-cycle desulfurization, using seawater or alkaline agents as spray liquids, depending on the navigation area of ​​the ship. The waste liquid can be discharged into the ocean, or the waste liquid can be recycled or temporarily stored in a sewage tank after treatment, thereby completing the desulfurization and purification operation of the tail gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Figure 2 Schematic diagram of the switching mechanism structure of the present invention.

[0017] Figure 3 This is a schematic diagram of the internal structure of the desulfurization tower of the present invention.

[0018] Figure 4 It is a schematic diagram of the internal structure of the filter cylinder of the present invention.

[0019] Figure 5 It is a schematic diagram of the internal structure of the transmission cylinder of the present invention.

[0020] Figure 6 For the present invention Figure 2 Schematic diagram of the locally enlarged structure at point A in the figure.

[0021] Figure 7The application relates to a Figure 3 The partial enlarged structural schematic view at B in the application.

[0022] The figure mark annotation: 1, desulfurization tower; 201, first bevel gear; 202, first transmission rod; 203, driving motor; 204, first infusion tube; 205, connecting ring; 206, bevel gear ring; 207, limiting ring; 208, transmission cylinder; 209, spraying head; 2010, material guide scraper; 2011, filter screen cylinder; 301, second infusion tube; 302, first liquid discharge pipe; 303, liquid guide groove; 304, second transmission rod; 305, double-head motor; 306, second bevel gear; 307, third bevel gear; 308, fixed frame; 309, switching disc; 4, air inlet pipe; 5, air outlet pipe; 6, second liquid discharge pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below in combination with the drawings and examples.

[0024] In one embodiment, as Figure 1-Figure 7 shown in the figure, a ship exhaust gas purification device comprises a transmission cylinder 208, the transmission cylinder 208 is located above a desulfurization tower 1, the transmission cylinder 208 penetrates into the inside of the desulfurization tower 1, the transmission cylinder 208 is rotationally connected with the desulfurization tower 1, a plurality of groups of spraying heads 209 are installed on the outer wall of the transmission cylinder 208 at equal intervals in the circumferential direction, the inner cavity of the transmission cylinder 208 and the inner cavities of the plurality of groups of spraying heads 209 are mutually penetrated, and the plurality of groups of spraying heads 209 are all located inside the desulfurization tower 1; The device further comprises the desulfurization tower 1, the outer wall of the desulfurization tower 1 is symmetrically provided with an air inlet pipe 4 and an air outlet pipe 5, the bottom end of the desulfurization tower 1 is provided with a second liquid discharge pipe 6, the inner cavities of the air inlet pipe 4, the air outlet pipe 5 and the second liquid discharge pipe 6 are mutually penetrated with the inner cavity of the desulfurization tower 1, electric valves are installed at the positions where the desulfurization tower 1 is connected with the air inlet pipe 4, the air outlet pipe 5 and the second liquid discharge pipe 6, the electric valves are electrically connected with external controllers through wires, and the desulfurization tower 1 is provided with a switching mechanism for switching between open circulation and closed circulation; The switching mechanism comprises two fixed frames 308 which are fixedly connected on the outer wall of the desulfurization tower 1 in a symmetrical manner, the two fixed frames 308 are respectively located at the upper and lower ends of the desulfurization tower 1, the two fixed frames 308 are fixedly connected with a first infusion tube 204 and a second liquid discharge pipe 6 respectively, a switching disc 309 is rotationally connected in the inside of each of the two fixed frames 308, a liquid guide groove 303 is formed in the inside of the switching disc 309, the inner wall of the liquid guide groove 303 is in L shape, two sealing rings which are in contact with the inner walls of the fixed frames 308 are symmetrically arranged on the outer wall of the switching disc 309, a liquid infusion port is formed at the position of each of the two fixed frames 308 which is located at the port of the first infusion tube 204 and the second liquid discharge pipe 6, the inner cavities of the liquid guide groove 303, the first infusion tube 204 and the second liquid discharge pipe 6 are mutually penetrated with the inner cavity of the liquid infusion port. The two fixed frames 308 are respectively provided with an infusion assembly for transporting liquid; The desulfurization tower 1 is provided with a second driving assembly for driving the switching disk 309 to rotate; The infusion assembly includes: two second infusion tubes 301 symmetrically fixedly connected to the outer wall of one fixed frame 308; two first drainage tubes 302 symmetrically fixedly connected to the outer wall of another fixed frame 308; one second infusion tube 301 and one first drainage tube 302 are mutually connected to the inner cavity of the liquid guide groove 303; In this embodiment, it is important to note that the open-cycle desulfurization method involves directly extracting seawater (natural alkaline) as a spray liquid to contact the exhaust gas, neutralizing the sulfur dioxide, and then discharging it into the ocean. The closed-cycle desulfurization method involves using fresh water or brackish water with an alkaline agent such as NaOH added as a spray liquid. The waste liquid is then treated and recycled or temporarily stored in a sewage tank. When in use, the electric valve at the port of the air inlet pipe 4 is activated by an external controller to open, and the ship's exhaust gas can be discharged into the inner cavity of the desulfurization tower 1 through the air inlet pipe 4. At this time, the impurities in the exhaust gas are filtered by the spray desulfurization mechanism, and then the filtered exhaust gas is sprayed and purified. At the same time, the impurities adhering to the inner wall of the desulfurization tower 1 are cleaned to avoid the impurities from adversely affecting the purification efficiency of the exhaust gas. When the exhaust gas is purified to qualified gas, the purified gas and the waste liquid generated by desulfurization can be discharged through the exhaust pipe 5 and the second drain pipe 6 respectively, thereby performing a desulfurization purification operation on the ship's exhaust gas; During this process, depending on the navigation area of ​​the ship, when using open-cycle desulfurization or closed-cycle desulfurization for desulfurization purification, the switching mechanism can respectively use seawater or alkaline reagent as a spray liquid to spray the exhaust gas in the inner cavity of the desulfurization tower 1. After the exhaust gas is purified, the second liquid discharge pipe 6 cooperates with the switching mechanism to discharge the waste liquid into the ocean, or the waste liquid can be recycled after treatment or temporarily stored in the sewage tank, thereby completing the desulfurization purification operation of the exhaust gas; In one embodiment, Figure 1-Figure 7 As shown, the spray desulfurization mechanism further includes: a filter assembly provided on the transmission cylinder 208; The filter assembly includes: a filter screen cylinder 2011 rotatably sleeved on the outer wall of the transmission cylinder 208, a plurality of material guide scrapers 2010 equidistantly fixedly connected to the outer wall of the filter screen cylinder 2011, and the plurality of material guide scrapers 2010 are in contact with the inner wall of the desulfurization tower 1; A feeding assembly is provided on the transmission cylinder 208; The transmission cylinder 208 is provided with a transmission assembly; The feeding assembly comprises a first liquid conveying pipe 204 arranged above the transmission cylinder 208, the bottom end of the first liquid conveying pipe 204 is fixedly connected with a connecting ring 205, the outer wall of the connecting ring 205 is integrally formed with a limiting ring 207, the transmission cylinder 208 is rotationally sleeved on the outer wall of the connecting ring 205 and the limiting ring 207, through the cooperation of the filtering assembly and the feeding assembly, the impurities in the tail gas can be filtered, and through the conveying of the spraying liquid by the feeding assembly, the spraying liquid can be used to spray and purify the filtered tail gas. In one embodiment, as shown in Figure 3-Figure 7 The transmission assembly comprises a first bevel gear 201 arranged outside the transmission cylinder 208, the first bevel gear 201 is located inside the desulfurization tower 1, the outer wall of the first bevel gear 201 is symmetrically meshed with two bevel gear rings 206, one bevel gear ring 206 is fixed on the outer wall of the transmission cylinder 208, and the other bevel gear ring 206 is rotationally sleeved on the outer wall of the transmission cylinder 208, and the other bevel gear ring 206 is fixedly connected with the filter screen cylinder 2011. A first driving assembly is arranged on the first bevel gear 201. The first driving assembly comprises a first transmission rod 202 fixedly connected to the side of the first bevel gear 201 away from the transmission cylinder 208, the first transmission rod 202 is rotationally connected with the desulfurization tower 1, a driving motor 203 is arranged on the side of the first transmission rod 202 away from the first bevel gear 201, and the driving motor 203 is installed on the outer wall of one side of the desulfurization tower 1, through the cooperation of the transmission assembly and the first driving assembly, the transmission cylinder 208 and the filter screen cylinder 2011 can be driven to rotate in opposite directions, so that the impurities on the outer wall of the guide scraping plate 2010 and the filter screen cylinder 2011 can be sprayed and washed, so as to avoid the blockage of the mesh of the filter screen cylinder 2011 by the impurities during the purification of the tail gas. In one embodiment, as shown in Figure 2-Figure 6 The second driving assembly comprises a double-head motor 305 installed on the outer wall of one end of the desulfurization tower 1 through a fixed seat, two second transmission rods 304 are symmetrically arranged at one end of the desulfurization tower 1, the two second transmission rods 304 are fixedly connected with the two output ends of the double-head motor 305 respectively, the ends of the two second transmission rods 304 away from the double-head motor 305 are fixedly connected with second bevel gears 306, the outer wall of the second bevel gear 306 is meshed with a third bevel gear 307, the third bevel gear 307 is located at one end of a fixed frame 308, the third bevel gear 307 is fixedly connected with a switching disc 309, the outer wall of the two second transmission rods 304 is rotationally sleeved with a fixed sleeve frame, and the fixed sleeve frame is fixedly connected with the desulfurization tower 1, through the meshing connection of the second bevel gear 306 and the third bevel gear 307, the switching discs 309 inside the two fixed frames 308 can be synchronously rotated, so that the open circulation and the closed circulation can be conveniently switched.

[0025] The above embodiment discloses a ship exhaust gas purification device, wherein, in use, the driving motor 203 is started to drive the first transmission rod 202 to rotate, at this time, the first bevel gear 201 is driven by the first transmission rod 202 to rotate through meshing to drive the two bevel gear rings 206 to rotate respectively, in this process, the filter screen cylinder 2011 is driven by one of the bevel gear rings 206 to drive the plurality of material guide scrapers 2010 to rotate, so that the impurities in the exhaust gas can be filtered when purifying the exhaust gas, and the impurities adhered to the inner wall of the desulfurization tower 1 can be cleaned by the material guide scraper 2010, so that the impurities do not adversely affect the purification efficiency of the exhaust gas; At this time, the transmission cylinder 208 is driven by the other bevel gear ring 206 to rotate along the outer wall of the connecting ring 205 and the limiting ring 207, and the plurality of spray heads 209 are driven by the transmission cylinder 208 to move, at this time, the reverse rotation of the two bevel gear rings 206 can make the transmission cylinder 208 and the filter screen cylinder 2011 rotate in the opposite direction, so that the impurities on the outer wall of the material guide scraper 2010 and the filter screen cylinder 2011 can be sprayed and washed by the spray head 209, and the impurities can be prevented from blocking the mesh of the filter screen cylinder 2011 during the purification of the exhaust gas; When purifying the exhaust gas, the electric valve at the port of the inlet pipe 4 is opened by the external controller, and the ship exhaust gas can be discharged into the inner cavity of the desulfurization tower 1 through the inlet pipe 4, at this time, the impurities in the exhaust gas are filtered by the rotating filter screen cylinder 2011, and the filtered exhaust gas is sprayed and purified by the spray head 209, when the exhaust gas is purified to qualified gas, the electric valves at the ports of the exhaust pipe 5 and the second liquid discharge pipe 6 are opened by the external controller, so that the purified gas and the waste liquid generated by desulfurization can be discharged through the exhaust pipe 5 and the second liquid discharge pipe 6 respectively, thereby realizing the desulfurization and purification operation of the ship exhaust gas; In this process, according to the sailing area of the ship, if the open cycle desulfurization method is used for desulfurization and purification, the extracted seawater is sent into the inside of a fixed frame 308 through a second liquid conveying pipe 301, and is guided to the inner cavity of the transmission cylinder 208 through the liquid guide groove 303, the first liquid conveying pipe 204 and the connecting ring 205, and the seawater is sprayed as spray liquid to the exhaust gas in the inner cavity of the desulfurization tower 1 through the plurality of spray heads 209, after the purification of the exhaust gas is completed, the waste liquid is sent into the inside of another fixed frame 308 through the second liquid discharge pipe 6, and is discharged into the sea through the liquid guide groove 303 and a first liquid discharge pipe 302, thereby completing the desulfurization and purification operation of the exhaust gas; If closed-loop desulfurization is used for desulfurization purification, the double-headed motor 305 is started to drive the two second transmission rods 304 to rotate synchronously along the inner wall of the fixed sleeve frame. At the same time, the second bevel gear 306, driven by the second transmission rod 304, drives the third bevel gear 307 to rotate through engagement. At this time, the switching disk 309, driven by the third bevel gear 307, rotates along the inner wall of the fixed frame 308, so that the ports of the two liquid guide grooves 303 can be aligned with the ports of the other second liquid infusion pipe 301 and the first liquid discharge pipe 302 respectively, so as to realize automatic switching of the desulfurization mode. Afterwards, the alkaline agent is used as a spray liquid through the other second liquid infusion pipe 301 to spray the exhaust gas in the inner cavity of the desulfurization tower 1. After completing the purification of the exhaust gas, the waste liquid is treated and recycled or temporarily stored in the sewage tank through the other first liquid discharge pipe 302, thereby completing the desulfurization purification operation of the exhaust gas.

[0026] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A spray desulfurization mechanism, characterized in that: The invention comprises a transmission cylinder (208), wherein the transmission cylinder (208) is located above the desulfurization tower (1), the transmission cylinder (208) penetrates into the interior of the desulfurization tower (1), the transmission cylinder (208) is rotatably connected to the desulfurization tower (1), a plurality of groups of spray heads (209) are equidistantly installed on the outer wall of the transmission cylinder (208), the inner cavity of the transmission cylinder (208) and the inner cavities of the plurality of groups of spray heads (209) are mutually connected, and the plurality of groups of spray heads (209) are all located inside the desulfurization tower (1).

2. A spray desulfurization mechanism according to claim 1, characterized in that: Also included are: a filter assembly disposed on the transmission cylinder (208); The filter assembly comprises: a filter screen cylinder (2011) rotatably sleeved on the outer wall of a transmission cylinder (208); a plurality of material guide scrapers (2010) are fixedly connected to the outer wall of the filter screen cylinder (2011) at equal intervals in the circumferential direction; and the plurality of material guide scrapers (2010) are in contact with the inner wall of the desulfurization tower (1); A feeding assembly is provided on the transmission cylinder (208); A transmission assembly is provided on the transmission cylinder (208).

3. A spray desulfurization mechanism according to claim 2, characterized in that: The feeding assembly comprises: a first infusion tube (204) arranged above a transmission cylinder (208); a connecting ring (205) is fixedly connected to the bottom end of the first infusion tube (204); a limiting ring (207) is integrally formed on the outer wall of the connecting ring (205); and the transmission cylinder (208) is rotatably sleeved on the outer walls of the connecting ring (205) and the limiting ring (207).

4. A spray desulfurization mechanism according to claim 2, characterized in that: The transmission assembly comprises: a first bevel gear (201) arranged on the outside of a transmission cylinder (208), the first bevel gear (201) being located inside the desulfurization tower (1), the outer wall of the first bevel gear (201) being symmetrically meshed with two bevel gear rings (206), one of the bevel gear rings (206) being fixed on the outer wall of the transmission cylinder (208), the other bevel gear ring (206) being rotatably sleeved on the outer wall of the transmission cylinder (208), and the other bevel gear ring (206) being fixedly connected to the filter cylinder (211); A first driving assembly is provided on the first bevel gear (201).

5. A spray desulfurization mechanism according to claim 4, characterized in that: The first drive assembly comprises: a first transmission rod (202) fixedly connected to a side of the first bevel gear (201) away from the transmission cylinder (208); the first transmission rod (202) is rotationally connected to the desulfurization tower (1); a drive motor (203) is provided on a side of the first transmission rod (202) away from the first bevel gear (201); and the drive motor (203) is mounted on an outer wall of one side of the desulfurization tower (1).

6. A ship exhaust purification device comprises the spray desulfurization mechanism according to any one of claims 1 to 5, and further comprises a desulfurization tower (1), wherein an air intake pipe (4) and an exhaust pipe (5) are symmetrically mounted on the outer wall of the desulfurization tower (1), a second liquid discharge pipe (6) is mounted at the bottom end of the desulfurization tower (1), and the inner cavities of the air intake pipe (4), the exhaust pipe (5) and the second liquid discharge pipe (6) are all interconnected with the inner cavity of the desulfurization tower (1), characterized in that: The desulfurization tower (1) is provided with a switching mechanism for switching between open circulation and closed circulation; The switching mechanism comprises: two fixed frames (308) symmetrically fixedly connected to the outer wall of the desulfurization tower (1), the two fixed frames (308) being respectively located at the upper and lower ends of the desulfurization tower (1), the two fixed frames (308) being respectively fixedly connected to the first liquid infusion pipe (204) and the second liquid discharge pipe (6), the interiors of the two fixed frames (308) being rotatably connected to a switching disk (309), the interior of the switching disk (309) being provided with a liquid guide groove (303), the inner wall of the liquid guide groove (303) being L-shaped; The two fixed frames (308) are respectively provided with an infusion assembly for transporting liquid; The desulfurization tower (1) is provided with a second drive assembly for driving the switching disk (309) to rotate.

7. A ship exhaust purification device according to claim 6, characterized in that: The infusion assembly comprises: two second infusion tubes (301) symmetrically fixedly connected to the outer wall of a fixed frame (308); two first drainage tubes (302) symmetrically fixedly connected to the outer wall of another fixed frame (308); and one of the second infusion tubes (301) and one of the first drainage tubes (302) are mutually connected to the inner cavity of the liquid guide groove (303).

8. The ship exhaust gas purification equipment according to claim 6, characterized in that: The second drive assembly includes: a double-headed motor (305) mounted on the outer wall of one end of the desulfurization tower (1) through a fixed seat; two second transmission rods (304) are symmetrically provided at one end of the desulfurization tower (1); the two second transmission rods (304) are respectively fixedly connected to the two output ends of the double-headed motor (305); the ends of the two second transmission rods (304) away from the double-headed motor (305) are fixedly connected to the second bevel gear (306); the outer wall of the second bevel gear (306) is meshed with the third bevel gear (307); the third bevel gear (307) is located at one end of the fixed frame (308), and the third bevel gear (307) is fixedly connected to the switching disk (309).

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