Water-sealing air bag plugging type blowdown device of circular cooler

Abstract

The invention belongs to the technical field of blowdown devices, particularly relates to a circular cooler water seal air bag plugging type blowdown device, and aims to solve the problems that in the prior art, in the actual operation period, a ball valve or a rubber pipe valve is used for controlling opening, closing and sealing of a blowdown pipeline in a traditional method, sinter dust easily falls into a water tank and accumulates at the bottom of the tank to form sludge, and the pollution is caused. In order to solve the problems of frequent failure, leakage and the like of a ball valve or a rubber tube valve due to the fact that the ball valve or the rubber tube valve is arranged on the annular cooler, the following scheme is provided: the device comprises an annular cooler sealing water tank, a blow-off pipe and a blow-off water channel, the blow-off pipe is arranged below the annular cooler sealing water tank, the bottom side of the annular cooler sealing water tank is fixedly connected with the top side of the blow-off pipe, and the blow-off water channel is arranged below the blow-off pipe; according to the blow-off device, in the actual operation process, the traditional method that a ball valve or a rubber pipe valve is adopted to control the blow-off pipe to be connected, disconnected and sealed is avoided, and therefore the phenomena of frequent faults, leakage and the like are avoided.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of sewage discharge devices, in particular to a water sealing air bag plugging type sewage discharge device of a circular cooler. BACKGROUND

[0002] In the metallurgical field, the circular cooler is a core equipment of the sintering and pelletizing process, and the sealing device is an important component thereof. The water sealing technology is widely applied due to the advantages of good sealing effect and low air leakage rate. The water sealing device is mainly composed of a plug plate and a water tank. The sewage discharge of the water tank is mainly achieved by discharging the wastewater through a sewage discharge pipe. The opening and closing and sealing of the sewage discharge pipe are mainly controlled by a ball valve or a rubber tube valve.

[0003] The water sealing self-circulation sedimentation type mud cleaning device of a circular cooler for ironmaking sintering, which belongs to the technical field of dredging and sewage discharge equipment, is disclosed in the publication No. CN120120888A. The device comprises a circular cooler trolley, an upper sealing water tank arranged outside the trolley fence of the circular cooler trolley, a static sealing plate arranged in the upper sealing water tank, a dust hood fixedly connected to the upper part of the circular cooler trolley, a plurality of vertical steel support frames evenly distributed along the circumference of the outer part of the circular cooler trolley, two steel cross beams arranged on the steel support frames, and a water sealing self-circulation sedimentation mud cleaning device fixedly assembled on the two steel cross beams. The water sealing self-circulation sedimentation mud cleaning device is located at the upper part of the dust hood and is connected to the upper sealing water tank. The technical solution of the present application solves the problems of the existing fixed mud cleaning device, such as the need for shutdown for mud cleaning, long cleaning interval, and excessive accumulation of sludge. The mud cleaning device arranged in the water tank is prone to scraping and jamming failures, resulting in falling off and shutdown failures.

[0004] In the prior art, during actual operation, the traditional method uses a ball valve or a rubber tube valve to control the opening and closing and sealing of the sewage discharge pipeline. Sintering dust is easy to fall into the water tank and accumulate into sludge at the bottom of the tank, causing frequent failures and leakage of the ball valve or the rubber tube valve. SUMMARY

[0005] The purpose of the present application is to solve the problems of the prior art, such as the use of a ball valve or a rubber tube valve to control the opening and closing and sealing of the sewage discharge pipeline during actual operation, the easy falling of sintering dust into the water tank, the accumulation of sludge at the bottom of the tank, and the frequent failures and leakage of the ball valve or the rubber tube valve. A water sealing air bag plugging type sewage discharge device of a circular cooler is provided.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: A water sealing air bag plugging type sewage discharge device of a circular cooler comprises: The ring cooling machine sealing water tank, the blow-off pipe and the blow-off water channel, the blow-off pipe is located below the ring cooling machine sealing water tank, the bottom side of the ring cooling machine sealing water tank is fixedly connected with the top side of the blow-off pipe, and the blow-off water channel is located below the blow-off pipe. The dredging maintenance door is arranged on the blow-off pipe, the end of the blow-off pipe is provided with a flange, and the end of the blow-off pipe extends to above the blow-off water channel. The blow-off mechanism is arranged at the bottom of the ring cooling machine sealing water tank. The splash-proof flow guide mechanism is arranged at the bottom of the ring cooling machine sealing water tank and is used for guiding or preventing splashing of the sewage. The self-cleaning filtering mechanism is arranged in the blow-off pipe and is used for cleaning or filtering the inside of the blow-off pipe. The automatic backflushing mechanism is arranged in the inside of the blowdown pipe and is used for flushing the inside of the blowdown pipe; the blowdown mechanism comprises an end cover which is fixedly installed at one side of the end of the blowdown pipe, a hinge ear one which is arranged at one side of the end of the blowdown pipe, two hinge ear ones which are fixedly installed at the lower end of the end cover, a hinge ear two which is fixedly installed at the upper end of the hinge ear one, a same rotating shaft which is rotatably installed between the two hinge ear ones, a hinge ear three which is fixedly installed at the outside of the rotating shaft, an end cover body which is fixedly installed at the other end of the hinge ear three, an air valve which is arranged in the inside of the end cover body, an air valve outlet which is arranged in the inside of the air valve, a nut which is threadedly connected on the air valve outlet, a handle which is arranged at one end of the end cover body, a buckle reverse hook which is fixedly installed at the other end of the end cover body, a pin shaft which is fixedly installed at the other end of the end cover, the hinge ear three and the hinge ear one are hingedly connected through the pin shaft, a D-shaped buckle which is rotatably installed at the outside of the pin shaft, a plugging air bag which is arranged in the inside of the end cover, the air valve of the plugging air bag passes through the air valve outlet, the nut is fixedly connected with the air valve to clamp the end cover body, so that the plugging air bag is fixed on the end cover and can freely rotate with the end cover; the splash-proof flow guide mechanism comprises a plurality of through holes one which are arranged in the inside of the end cover body, a sliding groove which is arranged in the inside of the end cover body, a flow guide plate which is rotatably installed in the inside of the sliding groove, a plurality of through holes two which are arranged in the inside of the flow guide plate, a driving motor one which is arranged in the inside of the sliding groove, a rotating rod which is fixedly installed at the output shaft of the driving motor one, the rotating rod is rotatably connected with the sliding groove at the outside, a gear one which is fixedly installed at the outside of the rotating rod, a circular gear rack one which is fixedly installed in the inside of the flow guide plate, the circular gear rack one is slidably connected with the sliding groove at the outside, and the circular gear rack one and the gear one are meshed with each other; the self-cleaning filtering mechanism comprises a filter screen which is slidably installed in the inside of the blowdown pipe, a connecting plate which is fixedly installed at the outside of the filter screen, an adjusting box which is fixedly installed at the outside of the blowdown pipe, a cavity which is arranged in the inside of the adjusting box, a partition plate which is fixedly installed in the inside of the cavity, a rotating rod which is fixedly installed at one end of the filter screen, helical stainless steel blades which are fixedly installed at the outside of the rotating rod, the connecting plate is slidably connected with the blowdown pipe and the cavity at the outside, a circular gear rack two which is fixedly installed at the outside of the connecting plate, a driving motor two which is fixedly installed at one end of the partition plate, a rotating shaft which is fixedly installed at the output shaft of the driving motor two, the rotating shaft is rotatably connected with the cavity at the outside, a gear two which is fixedly installed at the outside of the rotating shaft, the gear two and the circular gear rack two are meshed with each other, and the circular gear rack two is slidably connected with the cavity at the outside; the automatic backflushing mechanism comprises an air pump which is arranged in the inside of the cavity, an air pipe which is fixedly installed at the output shaft of the air pump, and a nozzle which is fixedly installed at one end of the air pipe.

[0007] In the application, the water sealing air bag plugging type blowdown device of the circular cooler has the following beneficial effects: Due to the setting of the integrated sealing air bag and D-shaped buckle blowdown mechanism, the traditional ball valve and rubber tube valve control mode is replaced, with the help of the double sealing of air bag inflation and end cover extrusion force, not only the leakage and blockage failure rate caused by sinter sludge is greatly reduced, and the rotatable fixed design of air bag and end cover; Due to the setting of the anti-splashing flow guide mechanism, the wastewater can be accurately guided into the blowdown channel during blowdown, completely avoiding the problem of dust-containing wastewater splashing and polluting the equipment and ground; Due to the setting of the motor-assisted self-cleaning filter mechanism, it can intercept more than 90% of large particle sinter impurities to avoid scratching the sealing air bag, and realize self-scraping by self-rotation of the filter screen; Due to the setting of the automatic backflushing mechanism with linkage pressure difference monitoring, the filter screen can be automatically cleaned by air injection when it is blocked, without manual disassembly and washing.

[0008] The present application avoids the traditional method of using ball valves or rubber tube valves to control the on-off and sealing of blowdown pipes, thereby solving the frequent failures and leakage problems. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 A structure diagram of the main body of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 2 A structure diagram of the end cover of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 3 A structure diagram of the end cover body inside a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 4 A structure diagram of the flow guide plate of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 5 A structure diagram of the inside of the blowdown pipe of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 6 A structure diagram of the filter screen of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 7 A structure diagram of the Figure 3 enlarged structure diagram of part B of a water-sealed air bag sealing type blowdown device for a circular cooler is provided. Figure 8 A structure diagram of the Figure 5 enlarged structure diagram of part C of a water-sealed air bag sealing type blowdown device for a circular cooler is provided.

[0010] Reference signs: 1, ring cooling machine sealing water tank; 2, blowdown pipe; 3, dredging maintenance door; 4, hinge ear one; 5, hinge ear two; 6, D-shaped buckle; 7, flange; 8, end cover; 8.1, end cover body; 8.2, hinge ear three; 8.3, air valve outlet; 8.4, handle; 8.5, buckle reverse hook; 9, pin shaft; 10, plugging air bag; 11, blowdown water channel; 12, nut; 13, air valve; 14, through hole one; 15, sliding groove; 16, driving motor one; 17, rotating rod; 18, gear one; 19, circular rack one; 20, guide plate; 21, adjusting box; 22, filter screen; 23, connecting plate; 24, rotating rod; 25, helical stainless steel blade; 26, driving motor two; 27, rotating shaft; 28, gear two; 29, circular rack two; 30, partition plate; 31, air pump; 32, air pipe; 33, nozzle. DETAILED DESCRIPTION

[0011] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all.

[0012] Embodiment one Reference Figures 1-8 A ring cooling machine water sealing air bag plugging blowdown device, comprising: The ring cooling machine sealing water tank 1, the blowdown pipe 2 and the blowdown water channel 11, the ring cooling machine sealing water tank 1 is made of stainless steel 304 material, or is made of carbon steel base material and lined with an epoxy resin anticorrosive layer; the blowdown pipe 2 is made of stainless steel 316 material and is resistant to sintering wastewater corrosion, the blowdown pipe 2 is located below the ring cooling machine sealing water tank 1, the bottom side of the ring cooling machine sealing water tank 1 is fixedly connected with the top side of the blowdown pipe 2, and the blowdown water channel 11 is located below the blowdown pipe 2; further comprising: The dredging maintenance door 3 is arranged on the blowdown pipe 2, the dredging maintenance door 3 is made of stainless steel 304 material, a fluorine rubber sealing rubber ring is arranged on the abutting surface of the dredging maintenance door 3 and the blowdown pipe 2, a flange 7 is arranged at the end of the blowdown pipe 2, and the end of the blowdown pipe 2 extends to above the blowdown water channel 11; The blowdown mechanism is arranged at the bottom of the ring cooling machine sealing water tank 1; The splash-proof guide mechanism is arranged at the bottom of the ring cooling machine sealing water tank 1 and is used for guiding or preventing splashing of the wastewater; The self-cleaning filtering mechanism is arranged in the blowdown pipe 2 and is used for cleaning or filtering the inside of the blowdown pipe 2; The automatic backflushing mechanism is arranged in the blowdown pipe 2 and is used for flushing the inside of the blowdown pipe 2.

[0013] In this embodiment, the pollution discharge mechanism includes an end cover 8 fixedly installed at one side of the end of the pollution discharge pipe 2, a hinge ear one 4 is arranged at one side of the end of the pollution discharge pipe 2, two hinge ear ones 4 are fixedly installed at the lower end of the end cover 8, a hinge ear two 5 is fixedly installed at the upper end of the hinge ear one 4, and a same rotating shaft is rotatably installed between the two hinge ear ones 4.

[0014] In this embodiment, the rotating shaft is externally fixedly installed with a hinge ear three 8.2, the other end of the hinge ear three 8.2 is fixedly installed with an end cover body 8.1, the inside of the end cover body 8.1 is provided with an air valve 13, the inside of the air valve 13 is provided with an air valve outlet 8.3, the air valve outlet 8.3 is threadedly connected with a nut 12, one end of the end cover body 8.1 is provided with a handle 8.4, and the handle 8.4 is made of high-strength corrosion-resistant alloy material. This material not only ensures the firmness and durability of the handle 8.4 during use, but also effectively resists corrosion caused by sewage and other harsh environments, thereby prolonging the service life of the handle 8.4.

[0015] In this embodiment, the other end of the end cover body 8.1 is fixedly installed with a buckle reverse hook 8.5, the other end of the end cover 8 is fixedly installed with a pin shaft 9, the pin shaft 9 is made of high-strength stainless steel, which has excellent corrosion resistance and mechanical strength, can maintain stable performance in harsh working environments, ensures the long-term use effect of the pin shaft 9, the hinge ear three 8.2 and the hinge ear one 4 are hingedly connected through the pin shaft 9, the outside of the pin shaft 9 is rotatably installed with a D-shaped buckle 6, the D-shaped buckle 6 is made of high-strength stainless steel, which has excellent corrosion resistance and mechanical strength, can maintain stable performance in harsh working environments, is not easy to deform and damage, ensures the long-term reliable use of the D-shaped buckle 6, the inside of the end cover 8 is provided with a plugging air bag 10, the plugging air bag 10 is made of high-elasticity and wear-resistant synthetic rubber, which not only has good sealing performance and can effectively prevent sewage leakage, but also can maintain stable elasticity during frequent opening and closing, is not easy to age and crack, and ensures the long-term reliable work of the plugging air bag 10, the air valve 13 of the plugging air bag 10 passes through the air valve outlet 8.3, the nut 12 is fixedly connected with the air valve 13 to clamp the end cover body 8.1, so that the plugging air bag 10 is fixed on the end cover 8 and can freely rotate with the end cover 8.

[0016] In this embodiment, the splash-proof flow guide mechanism includes a plurality of through holes one 14 arranged in the inside of the end cover body 8.1, the inside of the end cover body 8.1 is provided with a sliding groove 15, the inside of the sliding groove 15 is rotatably installed with a flow guide plate 20, the flow guide plate 20 is made of wear-resistant engineering plastic or stainless steel 304, the inside of the flow guide plate 20 is provided with a plurality of through holes two, the inside of the sliding groove 15 is provided with a driving motor one 16, and the shell of the driving motor one 16 is made of cast aluminum.

[0017] In this embodiment, the output shaft of the driving motor 16 is fixedly installed with a rotating rod 17, the outer part of the rotating rod 17 is rotatably connected with the sliding groove 15, the outer part of the rotating rod 17 is fixedly installed with a gear 18, the inner part of the guide plate 20 is fixedly installed with a circular rack 19, the outer part of the circular rack 19 is slidably connected with the sliding groove 15, the circular rack 19 and the gear 18 are meshed with each other, When the driving motor 16 is started, the output shaft drives the rotating rod 17 to rotate, the gear 18 on the rotating rod 17 rotates, the circular rack 19 is meshed with the gear 18, the rotation of the gear 18 drives the circular rack 19 to slide in the sliding groove 15, and further drives the guide plate 20 to rotate in the sliding groove 15, the rotation angle of the guide plate 20 can be accurately controlled by controlling the forward and reverse rotation of the driving motor 16, so as to flexibly adjust the flow direction of the sewage, the setting of the plurality of through holes 14 and the through hole 2 can make the sewage more smooth when passing through the end cover body 8.1, reduce the water flow resistance, at the same time, the rotation of the guide plate 20 can be adjusted according to the actual working condition to adapt to different sewage discharge requirements and improve the sewage discharge efficiency.

[0018] In this embodiment, the self-cleaning filtering mechanism includes a filter screen 22 slidably installed in the sewage pipe 2, the filter screen 22 is made of stainless steel 316, the aperture is 5-8mm, the outer part of the filter screen 22 is fixedly installed with a connecting plate 23, the outer part of the sewage pipe 2 is fixedly installed with an adjusting box 21, the inner part of the adjusting box 21 is provided with a cavity, the inner part of the cavity is fixedly installed with a partition plate 30, one end of the filter screen 22 is fixedly installed with a rotating rod 24, the outer part of the rotating rod 24 is fixedly installed with a spiral stainless steel blade 25, the material of the spiral stainless steel blade 25 is high-strength stainless steel, which has good corrosion resistance and wear resistance, and can be stably operated for a long time in harsh working environment without deformation or damage.

[0019] In this embodiment, the outer part of the connecting plate 23 is slidably connected with the sewage pipe 2 and the cavity of the adjusting box 21, the outer part of the connecting plate 23 is fixedly installed with a circular rack 29, one end of the partition plate 30 is fixedly installed with a driving motor 26, the output shaft of the driving motor 26 is fixedly installed with a rotating shaft 27, the outer part of the rotating shaft 27 is rotatably connected with the cavity.

[0020] In this embodiment, the outer part of the rotating shaft 27 is fixedly installed with a gear 28, the gear 28 and the circular rack 29 are meshed with each other, the outer part of the circular rack 29 is slidably connected with the cavity.

[0021] In this embodiment, the automatic backflush mechanism comprises a gas pump 31 arranged inside the cavity. The shell of the gas pump 31 is made of engineering plastic material. The output shaft of the gas pump 31 is fixedly provided with a gas pipe 32 made of polytetrafluoroethylene material, which is resistant to high pressure and corrosion. One end of the gas pipe 32 is fixedly provided with a nozzle 33 made of stainless steel 304. The nozzle 33 is conical in shape, which can make the airflow more concentrated and improve the backflush effect. The gas pump 31 is electrically connected to an external power source through wires.

[0022] In the application, when the sealing bag 10 is placed in the sewage pipe 2 in the un-inflated state, the end cap 8 is closed with the pipe end flange 7, and the D-shaped buckle 6 is buckled on the buckle reverse hook 8.5 of the end cap body 8.1 by rotating the shaft, at this time, the inflation device inflates the sealing bag 10 through the air valve 13, as the sealing bag 10 continuously expands, it is tightly attached to the inner wall of the sewage pipe 2 and has a certain expansion force, at the same time, it also has extrusion force on the end cap 8, so that the D-shaped buckle 6 is tightly engaged with the buckle reverse hook 8.5, thereby sealing the sewage pipe 2; when the sewage needs to be opened, the air in the sealing bag 10 is first exhausted through the air valve 13, after the D-shaped buckle 6 and the buckle reverse hook 8.5 are relaxed, the D-shaped buckle 6 is turned out of the buckle reverse hook 8.5, the end cap 8 is opened, and the sewage operation is carried out; when the filter screen 22 needs to be cleaned, the driving motor 26 is started, the output shaft drives the rotating shaft 27 to rotate, the rotating shaft 27 drives the gear 28 to rotate, the gear 28 drives the circular rack 29 to rotate, the circular rack 29 drives the connecting plate 23 to rotate, the connecting plate 23 drives the filter screen 22 to slide into the inside of the sewage pipe, when the water flow enters the sewage pipe 2, it impacts the spiral stainless steel blade 25 connected to the filter screen 22, drives the rotating rod 24 and the filter screen 22 to rotate, the self-scraping structure on the surface of the filter screen 22 synchronously scrapes off the attached impurities, at the same time, intercepts large particle sintered ore dust, realizes water flow driven self-cleaning or impurity interception, when splash prevention is needed, the driving motor 16 is started, the output shaft drives the rotating rod 17 to rotate, the rotating rod 17 drives the gear 18 to rotate, the gear 18 drives the circular rack 19 to rotate, the circular rack 19 drives the deflector 20 to rotate, so that the deflector 20 is turned out of the end cap sliding groove 15 and expanded, and is adjusted to an angle matched with the sewage channel 11; after the wastewater is filtered by the self-cleaning filter screen 22, it is guided into the sewage channel through the expanded deflector 20, so as to avoid wastewater splashing and polluting the environment, when the water flow velocity decreases due to the accumulation of impurities on the surface of the filter screen 22, the air pump 31 in the adjusting box 21 is started, compressed air is delivered to the nozzle 33 through the air pipe 32, the nozzle 33 sprays air to the surface of the filter screen 22 to backflush, blows off the attached impurities, and the impurities are discharged with the wastewater; after backflushing, the air pump 31 is automatically closed, after the sewage is completed, the splash prevention deflector mechanism needs to be stored, the driving motor 16 is reversed, the output shaft drives the deflector 20 to rotate back to the original position, the end cap 8 is closed with the sewage pipe end flange 7, the D-shaped buckle 6 is buckled on the buckle reverse hook 8.5, the sealing bag 10 is inflated through the air valve 13, after the air bag expands, it is tightly attached to the inner wall of the sewage pipe, at the same time, it also has extrusion force on the end cap, so that the D-shaped buckle and the buckle reverse hook are tightly engaged, thereby sealing the sewage pipe.

[0023] Example two The difference between the embodiment and the embodiment one is that a flow rate sensor is arranged in the inner portion of the end cover 8, the flow rate sensor can monitor the flow rate of the wastewater through the sewage pipe in real time, when the flow rate is detected to drop to a preset threshold range, a signal is sent to the driving motor 16, after the driving motor 16 receives the signal, the air pump 31 in the adjusting box 21 is started, and the backflush cleaning process of the filter screen 22 is triggered, so that the wastewater can smoothly pass through the self-cleaning filter screen, and the normal operation of the whole sewage device is maintained.

[0024] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A water-sealed airbag-type sewage discharge device for an annular cooler, characterized in that: include: The ring cooler includes a sealing water tank (1), a drain pipe (2), and a sewage discharge channel (11). The drain pipe (2) is located below the sealing water tank (1), and the bottom side of the sealing water tank (1) is fixedly connected to the top side of the drain pipe (2). The sewage discharge channel (11) is located below the drain pipe (2). The system also includes: A dredging and maintenance door (3) is installed on the sewage pipe (2), and a flange (7) is installed at the end of the sewage pipe (2). The end of the sewage pipe (2) extends to the top of the sewage ditch (11). The sewage discharge mechanism is located at the bottom of the sealing water tank (1) of the annular cooler; A splash-proof and flow-guiding mechanism is set at the bottom of the sealing water tank (1) of the annular cooler, and is used to guide or prevent sewage from splashing. The self-cleaning filter mechanism is installed inside the drain pipe (2) and is used to clean or filter the inside of the drain pipe (2); An automatic backflushing mechanism is installed inside the drain pipe (2) to flush the inside of the drain pipe (2).

2. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 1, characterized in that: The sewage discharge mechanism includes an end cap (8) fixedly installed on one side of the end of the sewage pipe (2). A hinge lug 1 (4) is provided on one side of the end of the sewage pipe (2). Two hinge lugs 1 (4) are fixedly installed at the lower end of the end cap (8). A hinge lug 2 (5) is fixedly installed at the upper end of the hinge lugs 1 (4). The two hinge lugs 1 (4) are rotatably installed on the same shaft.

3. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 2, characterized in that: The shaft is fixedly mounted with a hinge lug 3 (8.2) on the outside. The other end of the hinge lug 3 (8.2) is fixedly mounted with an end cover body (8.1). The end cover body (8.1) is provided with a valve (13). The valve (13) is provided with a valve outlet (8.3). A nut (12) is threaded onto the valve outlet (8.3). One end of the end cover body (8.1) is provided with a handle (8.4).

4. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 3, characterized in that: The other end of the end cap body (8.1) is fixedly installed with a buckle hook (8.5), and the other end of the end cap (8) is fixedly installed with a pin (9). The hinge ear three (8.2) and hinge ear one (4) are hinged together by the pin (9). The pin (9) is rotatably installed with a D-shaped buckle (6). The end cap (8) is provided with a sealing airbag (10). The valve (13) of the sealing airbag (10) passes through the valve outlet (8.3). The nut (12) is fixedly connected to the valve (13) to clamp the end cap body (8.1), so that the sealing airbag (10) is fixed on the end cap (8) and can rotate freely with the end cap (8).

5. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 3, characterized in that: The splash-proof and flow-guiding mechanism includes multiple through holes (14) inside the end cap body (8.1), a sliding groove (15) is provided inside the end cap body (8.1), a flow guide plate (20) is rotatably installed inside the sliding groove (15), multiple through holes (20) are provided inside the flow guide plate (20), and a drive motor (16) is provided inside the sliding groove (15).

6. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 5, characterized in that: The output shaft of the drive motor (16) is fixedly mounted with a rotating rod (17). The outside of the rotating rod (17) is rotatably connected to the sliding groove (15). The outside of the rotating rod (17) is fixedly mounted with a gear (18). The inside of the guide plate (20) is fixedly mounted with a circular rack (19). The outside of the circular rack (19) is slidably connected to the sliding groove (15). The circular rack (19) and the gear (18) mesh with each other.

7. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 1, characterized in that: The self-cleaning filter mechanism includes a filter screen (22) that is slidably installed inside the drain pipe (2). A connecting plate (23) is fixedly installed on the outside of the filter screen (22). An adjusting box (21) is fixedly installed on the outside of the drain pipe (2). A cavity is provided inside the adjusting box (21). A partition plate (30) is fixedly installed inside the cavity. A rotating rod (24) is fixedly installed at one end of the filter screen (22). A spiral stainless steel blade (25) is fixedly installed on the outside of the rotating rod (24).

8. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 7, characterized in that: The outside of the connecting plate (23) is slidably connected to the cavity of the drain pipe (2) and the regulating box (21). A circular rack (29) is fixedly installed on the outside of the connecting plate (23). A drive motor (26) is fixedly installed at one end of the partition (30). A rotating shaft (27) is fixedly installed on the output shaft of the drive motor (26). The outside of the rotating shaft (27) is rotatably connected to the cavity.

9. The annular cooler water-sealed airbag plugging sewage discharge device according to claim 7, characterized in that: Gear 2 (28) is fixedly installed on the outside of the rotating shaft (27). Gear 2 (28) meshes with circular rack 2 (29). The outside of circular rack 2 (29) is slidably connected to the cavity.

10. A water-sealed airbag-type sewage discharge device for an annular cooler according to claim 7, characterized in that: The automatic backflush mechanism includes an air pump (31) disposed inside the cavity, an air pipe (32) is fixedly installed on the output shaft of the air pump (31), and a nozzle (33) is fixedly installed on one end of the air pipe (32).

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