Anti-overflow upper water tank of circular cooler

Abstract

The utility model provides an anti-overflow circular cooler upper water tank which comprises an annular trolley, a smoke hood arranged on the annular trolley and a water tank arranged on the side wall of the annular trolley, and further comprises a sealing piece, an electric valve and a pressure detector, the sealing piece comprises a cover plate and an insertion plate, the cover plate is fixedly connected to the smoke hood and covers the upper water tank, and the insertion plate is fixedly connected to the smoke hood and covers the upper water tank. The inserting plate is fixedly connected to the lower portion of the cover plate, the inserting plate extends downwards and divides the interior of the upper water tank into a first cavity and a second cavity, the first cavity is close to the annular trolley, the electric valve is installed on the cover plate, and the pressure detector is arranged on the smoke hood and electrically connected with the electric valve. The electric signal is transmitted to the electric valve through the pressure detector, the electric valve responds to the electric signal transmitted by the pressure detector and opens the electric valve, so that the first cavity is communicated with the outside atmosphere, the pressure at the first cavity is recovered to be within a set value, and water in the upper water tank is prevented from being pressed out or sucked into the trolley.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering ring coolers, in particular to an upper water tank of a ring cooler which is anti-overflow. Background Art

[0002] The upper water trough is typically installed in a circular configuration on the side of the trolley's sidewall, rotating in a circular motion with the trolley's sidewall. A heat-insulating layer is provided between the water trough and the sidewall. A seal is installed on the side of the fixed hood. The seal cover is connected to the hood, and the seal insert is inserted into the sealing medium (water) within the water trough, dividing the sealing medium (water) into an inner and outer side. The inner water surface contacts the hot flue gas inside the hood, while the outer water surface contacts the atmosphere, thus forming a watertight seal. The water level in the upper water trough is affected by the pressure of the hot flue gas inside the hood. When the pressure inside the hood is positive, the outer water surface rises and the inner water surface falls. When the pressure inside the hood is negative, the outer water surface falls and the inner water surface rises. A blower blows cooling air through the material carried on the trolley, exchanging heat and forming hot flue gas inside the hood. After passing through the material layer, the hot flue gas is generally at a slightly positive pressure (approximately 0 to 500 Pa). The hood and upper water trough are designed to prevent the escape of hot flue gas, allowing for flue gas utilization and emission reduction. Depending on the installation location and pressure of the upper water tank, the sealing height of the upper water tank is generally no more than 400mm. Along the direction of operation of the annular cooler, the temperature of the hot flue gas in the hood decreases gradually from approximately 500°C to approximately 100°C. If the water level in the water tank is low, the upper water tank is directly exposed to the hot flue gas, resulting in severely uneven heating of the water tank. Thermal stress can easily cause the tank to warp, deform, crack, and eventually fail. This phenomenon is called dry-burning of the upper water tank. Therefore, the upper water tank is generally required to operate at a relatively high water level. To prevent water shortages, liquid level detection and automatic water replenishment devices are often installed. To ensure the normal operation of the upper water tank, and considering the low pressure inside the hood, the water level rise or fall height is set to within 50mm, which can accommodate pressure fluctuations of ±500Pa. The pressure at different points in the annular cooler hood varies depending on the utilization of the hot flue gas. Existing hot flue gas extraction methods are generally divided into two types: powered and unpowered. Powered air extraction generally uses a fan to remove the hot flue gas of the required temperature in the smoke hood; unpowered air extraction generally uses an air extraction pipe set at a certain height, and uses the pulling force of the pipe to draw the hot flue gas of the required temperature in the smoke hood. The part of the smoke hood corresponding to the air extraction position is at a slightly negative pressure (-500~0Pa), and the hot flue gas at the position not directly extracted moves along the circumference of the smoke hood toward the air extraction point. The part of the smoke hood away from the air extraction position is at a slightly positive pressure (0~500Pa). Dust removal points are generally set at the feeding and unloading hoods of the annular cooler, and the dust removal fan extracts the flue gas in the hood, that is, the hood is generally at a slightly negative pressure (-500~0Pa). The hot flue gas extraction point and dust removal point must be connected to the corresponding pipe network system. When the system air volume is unevenly distributed, the pressure value in the smoke hood will increase, and the micro-pressure state (within ±500Pa) cannot be maintained. When positive pressure is excessive, the upper water trough overflows or even sprays water; when negative pressure is excessive, the upper water trough draws water inward. When the trough sprays water outward, the water level drops rapidly, easily leading to significant water loss. When the trough draws water inward, water can overflow through the insulation layer between the trough and the sidewall or flow into the sintered ore inside the sidewall, damaging the insulation and reducing sinter quality. Water overflow can also affect the surrounding environment of the ring cooler.In order to avoid dry burning of the upper water tank, the existing technology is to set a vent tube and an electric valve on the upper part of the smoke hood. When the valves on each section of the air intake pipeline are closed and the positive pressure in the hood is too large, the valve is opened for venting. When the negative pressure is too large, it is generally necessary to adjust the pipe network system. The adjustment of the pipe network system generally reduces the air volume of the pipeline corresponding to the air intake position and reduces the flow rate, but it will also cause insufficient air intake. Insufficient air intake will affect the utilization effect of the flue gas. Secondly, it reduces the fluidity of the flue gas in the hood, causing pressure in the smoke hood far away from the air intake position, causing water overflow. At the dust removal air intake position, the dust removal air volume is reduced, affecting the dust removal effect.

[0003] In summary, there is an urgent need for an anti-overflow water tank for an annular cooler to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide an anti-overflow upper water tank for an annular cooler, aiming to solve the problem that the pressure in the fume hood is adjusted by the relief valve on the fume hood in the prior art. This adjustment method takes a certain amount of time to react and cannot quickly adjust the local pressure of the upper water tank, resulting in water overflowing from the upper water tank or water being sucked into the annular cooler. The specific technical solution is as follows:

[0005] A water-overflow-proof upper water tank of an annular cooler comprises an annular trolley, a smoke hood and an upper water tank. The smoke hood covers the upper part of the annular trolley. Two upper water tanks are arranged, and the two upper water tanks are arranged on the inner and outer sides of the annular trolley respectively. The invention also includes a sealing member, an electric valve and a pressure detector. The sealing member includes a cover plate and an insert plate. The cover plate is fixedly connected to the smoke hood and covers the upper water tank. The insert plate is fixedly connected to the lower part of the cover plate and extends downwardly to be inserted into the upper water tank. The insert plate extends downward and separates a first chamber and a second chamber in the upper water tank. The bottom of the first chamber is communicated with the bottom of the second chamber. The first chamber is located on a side close to the annular trolley and is communicated with the interior of the smoke hood. The second chamber is located on a side away from the annular trolley and is communicated with the outside.

[0006] The electric valve is mounted on the cover plate, and the lower end of the electric valve is communicated with the first chamber, and the upper end of the electric valve is communicated with the outside;

[0007] The pressure detector is arranged on the smoke hood and extends into the smoke hood. The pressure detector is electrically connected to the electric valve. The pressure detector is used to transmit an electrical signal, and the electric valve is used to receive the electrical signal emitted by the pressure detector and respond.

[0008] Preferably, the electric valve includes a valve body, a valve plate and a rotary drive member, the valve body is arranged on the cover plate, the lower end of the valve body is connected to the first chamber, the valve plate is rotatably connected to the upper end of the valve body, and the valve plate can open or cover the upper end of the valve body by rotation, the rotary drive member is arranged on the valve body, and the output end of the rotary drive member is connected to the valve plate.

[0009] Preferably, a plurality of electric valves are arranged, and the plurality of electric valves are arranged at intervals along the circumference of the annular trolley. A plurality of pressure detectors are also arranged, and the pressure detectors are arranged in one-to-one correspondence with the electric valves.

[0010] Preferably, it also includes two heat insulation pieces, which are arranged one-to-one corresponding to the two upper water tanks. The two heat insulation pieces are respectively arranged on the inner and outer side walls of the annular trolley, and the heat insulation pieces are located between the annular trolley and the upper water tank.

[0011] Furthermore, it also includes an air intake pipe, which is arranged on the top of the smoke hood and is connected to the inside of the smoke hood, and an air inlet is arranged at the lower part of the annular trolley.

[0012] Preferably, a plurality of air intake pipes are arranged, and the plurality of air intake pipes are arranged at intervals along the smoke hood in a ring shape.

[0013] Furthermore, it also includes a thermometer, which is detachably connected to the air intake pipe and arranged at one end of the air intake pipe close to the smoke hood. A plurality of thermometers are arranged, and the thermometers are arranged in a one-to-one correspondence with the air intake pipes.

[0014] Preferably, the plug plate is fixedly connected to the cover plate by welding, and the cover plate is fixedly connected to the smoke hood by welding.

[0015] Preferably, it further comprises a reinforcing rib, wherein a first end of the reinforcing rib is fixedly connected to the smoke hood, and a second end of the reinforcing rib is fixedly connected to the cover plate.

[0016] The application of the technical solution of the utility model has the following beneficial effects:

[0017] When the system pressure is unevenly distributed, it is easy to cause the pressure in various places inside the smoke hood to fluctuate up and down. When the pressure in the smoke hood drops to the set low value or the pressure in the smoke hood rises to the set high value, the pressure detector transmits an electrical signal to the electric valve. The electric valve responds to the electrical signal sent by the pressure detector and opens the electric valve to connect the first chamber with the outside world, so that the pressure in the first chamber is restored to within the set value, thereby preventing the water in the upper water tank from being pressed out or sucked onto the trolley.

[0018] On the other hand, dust often easily enters the space between the sealing plate and the inner wall of the upper water tank to form sludge, which is difficult to completely scrape off with the conventional scraper at the bottom of the plate. By cutting off the power to the electric valve and manually opening the valve, the sludge between the plate and the inner wall of the upper water tank can be easily cleaned.

[0019] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. Figure 1-Figure 3 , the utility model is further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of an anti-overflow ring cooler water tank of the utility model of the present application;

[0022] Figure 2 This is a schematic diagram of the internal structure of a water tank and a sealing member of an anti-overflow ring cooler of the utility model of the present application;

[0023] Figure 3 This is a schematic diagram of the overall structure of an anti-overflow electric valve on the water tank of a ring cooler of the utility model of the present application.

[0024] Among them, 1. Annular trolley; 2. Smoke hood; 3. Upper water tank; 31. First chamber; 32. Second chamber; 4. Sealing part; 41. Cover plate; 42. Insert plate; 5. Electric valve; 51. Valve body; 52. Valve plate; 53. Rotary drive part; 6. Pressure detector; 7. Heat insulation part; 8. Air extraction pipe; 9. Thermometer; 10. Reinforcement rib. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the following provides a more comprehensive description of the present invention and presents preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] Example:

[0028] Research has found that by increasing the number of branches of the air intake pipe 8 above the fume hood 2, multiple branches are evenly arranged above the fume hood 2, thereby balancing the pressure at various locations inside the fume hood 2. However, in actual production, in addition to changes in sintering conditions, the structure of the fume hood 2, the setting of the air intake position, and the flow direction of the flue gas will also affect the imbalance of the hot flue gas pressure inside the fume hood 2. Only using the pressure balance adjustment of the air intake pipe 8 cannot solve the pressure value changes caused by local airflow changes at the sealing position of the fume hood 2. Therefore, changes in the water level difference of the water sealing surface always exist.

[0029] See also Figure 1-Figure 3 The present embodiment provides an anti-overflow ring cooler upper water tank, including a ring trolley 1, a smoke hood 2 and an upper water tank 3. The smoke hood 2 covers the upper part of the ring trolley 1. Two upper water tanks 3 are arranged, and the two upper water tanks 3 are arranged on the inner and outer sides of the ring trolley 1 respectively. It also includes a seal 4, an electric valve 5 and a pressure detector 6. The seal 4 includes a cover plate 41 and an insert plate 42. The cover plate 41 is fixedly connected to the smoke hood 2 and covers the upper water tank 3. The insert plate 42 is fixedly connected to the lower part of the cover plate 41 and extends downward to be inserted into the upper water tank 3. The insert plate 42 extends downward and separates a first chamber 31 and a second chamber 32 in the upper water tank 3. The bottom of the first chamber 31 It is connected to the bottom of the second chamber 32, the first chamber 31 is located on the side close to the annular trolley 1, and the first chamber 31 is connected to the inside of the smoke hood 2, the second chamber 32 is located on the side away from the annular trolley 1, and the second chamber 32 is connected to the outside atmosphere; the electric valve 5 is installed on the cover plate 41, and the lower end of the electric valve 5 is connected to the first chamber 31, and the upper end of the electric valve 5 is connected to the outside atmosphere; the pressure detector 6 is arranged on the smoke hood 2, and the pressure detector 6 extends into the smoke hood 2, the pressure detector 6 is electrically connected to the electric valve 5, the pressure detector 6 is used to transmit electrical signals, and the electric valve 5 is used to receive the electrical signals emitted by the pressure detector 6 and respond.

[0030] Specifically, the smoke hood 2 and the seal 4 are both annular, and a certain gap is maintained between the cover plate 41 of the seal 4 and the upper water tank 3, so that the first chamber 31 is connected with the inside of the smoke hood 2, and the second chamber 32 is connected with the outside atmosphere. In addition, through the arrangement of the gap, the trolley can rotate relative to the smoke hood 2, so that the sintering material on the trolley can move and cool with the trolley.

[0031] It is understandable that when the system pressure is unevenly distributed, it is easy to cause the pressure in various places in the smoke hood 2 to fluctuate up and down. When the pressure in the smoke hood 2 drops to a set low value or the pressure in the smoke hood 2 rises to a set high value, the pressure detector 6 transmits an electrical signal to the electric valve 5. The electric valve 5 responds to the electrical signal sent by the pressure detector 6 and opens the electric valve 5 to connect the first chamber 31 with the outside atmosphere, thereby restoring the pressure in the first chamber 31 to within the set value, thereby preventing the water in the upper water tank 3 from being pressed out or being sucked into the trolley. Of course, it should be noted that in some preferred embodiments, the pressure detector 6 can also be arranged on the cover plate 41, extending from the cover plate 41 into the first chamber 31, directly detecting the pressure in the first chamber 31, and transmitting an electrical signal to the electric valve 5.

[0032] It should be noted that the pressure detector 6 is electrically connected to the electric valve 5 through a wire. When the pressure detected by the pressure detector 6 is lower than the set low value or exceeds the set high value, the pressure detector 6 transmits an electrical signal to the electric valve 5 through the wire, and the electric valve 5 responds after receiving the electrical signal.

[0033] Preferably, the electric valve 5 includes a valve body 51, a valve plate 52 and a rotary drive member 53. The valve body 51 is arranged on the cover plate 41, the lower end of the valve body 51 is connected to the first chamber 31, the valve plate 52 is rotatably connected to the upper end of the valve body 51, and the valve plate 52 can open or cover the upper end of the valve body 51 by rotation. The rotary drive member 53 is arranged on the valve body 51, and the output end of the rotary drive member 53 is connected to the valve plate 52.

[0034] It is understood that when the pressure in the hood 2 is at the set value, the valve plate 52 covers the upper end of the valve body 51. At this time, the electric valve 5 is in a closed state, that is, the electric valve 5 does not play a regulating role. When the pressure in the hood 2 exceeds the set value, that is, the pressure in the hood 2 is too low or too high, the rotary drive member 53 drives the valve plate 52 to rotate relative to the valve body 51, causing the electric valve 5 to open, so that the first chamber 31 is connected to the outside atmosphere, thereby allowing the outside atmosphere to enter the first chamber 31, or allowing the gas in the first chamber 31 to be discharged through the electric valve 5 to achieve pressure regulation in the first chamber 31 and prevent water from overflowing from the first chamber 31 and the second chamber 32. It should be noted that in this embodiment, the rotary drive member 53 is a motor. In other embodiments of the present application, the rotary drive member 53 can also be a hydraulic motor, a starter motor, or other components or structures that can output rotational power.

[0035] Preferably, a plurality of electric valves 5 are arranged, and the plurality of electric valves 5 are arranged at intervals along the circumference of the annular trolley 1 . A plurality of pressure detectors 6 are also arranged, and the pressure detectors 6 are arranged in one-to-one correspondence with the electric valves 5 .

[0036] It can be understood that by arranging multiple pressure regulators along the circumference of the annular trolley 1, the pressure of each section of the upper water tank 3 on the side wall of the annular trolley 1 is adjusted, so that the pressure of each section of the upper water tank 3 can be adjusted.

[0037] Preferably, it also includes a heat insulation member 7, two heat insulation members 7 are arranged, and the two heat insulation members 7 are arranged one-to-one corresponding to the two upper water tanks 3. The two heat insulation members 7 are respectively arranged on the inner and outer side walls of the annular trolley 1, and the heat insulation member 7 is located between the annular trolley 1 and the upper water tank 3.

[0038] As can be understood, the heat insulating member 7 is an annular member that surrounds and fits snugly around the sidewall of the annular trolley 1. The annular trolley 1 is separated from the upper water tank 3 by the heat insulating member 7, minimizing the heat loss from the sintered ore on the annular trolley 1 by transferring it to the upper water tank 3, thereby allowing the heat of the sintered ore on the trolley to be recovered as much as possible through hot air. Furthermore, the heat insulating member 7 prevents the heat from the sintered ore on the trolley from being transferred to the upper water tank 3, thereby boiling the water therein and affecting the sealing function of the upper water tank 3.

[0039] Furthermore, it also includes an air intake pipe 8, which is arranged on the top of the smoke hood 2 and is connected to the inside of the smoke hood 2. An air inlet is arranged at the lower part of the annular trolley 1.

[0040] It can be understood that the hot air in the smoke hood 2 is taken away through the air extraction pipe 8 and connected to other gas-consuming equipment through the air extraction pipe 8, so that the hot air in the smoke hood 2 is comprehensively utilized, and the heat energy in the sintered ore on the trolley is recovered and reused, thereby improving energy utilization and reducing pollution.

[0041] Preferably, a plurality of air intake pipes 8 are arranged, and the plurality of air intake pipes 8 are arranged at intervals along the fume hood 2 in a circular manner.

[0042] It can be understood that by evenly arranging multiple air intake pipes 8 above the smoke hood 2, the pressure at various locations inside the smoke hood 2 can be adjusted, the pressure difference at various locations inside the smoke hood 2 can be reduced, and the pressure fluctuation in the smoke hood 2 can be slowed down, so that the electric valve 5 can work as little as possible. Because when the electric valve 5 is working, smoke may flow out of the electric valve 5 and enter the outside atmosphere, causing pollution to the outside atmosphere. By arranging multiple air intake pipes 8, the pollution can be reduced as much as possible.

[0043] Furthermore, it also includes a thermometer 9, which is detachably connected to the air intake pipe 8 and arranged at one end of the air intake pipe 8 close to the smoke hood 2. A plurality of thermometers 9 are arranged, and the thermometers 9 are arranged one-to-one corresponding to the air intake pipes 8.

[0044] As can be understood, the temperature in the gas extraction pipe 8 is monitored by temperature monitoring. Different gas extraction pipes 8 are connected to different gas-consuming devices, thereby extracting gases of different temperatures from the fume hood 2 through different gas extraction pipes 8. The gas extraction pipe 8 is located near the front end of the sintered ore cooling process, i.e., just after the sintered ore leaves the furnace, where the temperature is high, and the extracted gas temperature is also high. When the gas extraction pipe 8 is located near the rear end of the sintered ore cooling process, where the sintered ore has been substantially cooled, the extracted gas temperature is low. Gases of different temperatures are extracted through different gas extraction pipes 8 and applied in different situations, thereby fully utilizing the hot gas.

[0045] Preferably, the inserting plate 42 is fixedly connected to the cover plate 41 by welding, and the cover plate 41 is fixedly connected to the smoke hood 2 by welding.

[0046] It is understood that welding the insert plate 42 to the cover plate 41 provides a more secure fixation between the insert plate 42 and the cover plate 41, enhancing overall rigidity. Welding the cover plate 41 to the smoke hood 2 provides a more secure fixation of the cover plate 41 to the smoke hood 2, improving overall stability. Of course, the insert plate 42 can also be fixed to the cover plate 41 by other connection methods, such as riveting or bolting, and the cover plate 41 and the smoke hood 2 can also be fixed by riveting or bolting.

[0047] Preferably, a reinforcing rib 10 is further included, wherein a first end of the reinforcing rib 10 is fixedly connected to the smoke hood 2 , and a second end of the reinforcing rib 10 is fixedly connected to the cover plate 41 .

[0048] It can be understood that the arrangement of the reinforcing ribs 10 improves the stability of the cover plate 41 and the smoke hood 2, makes the connection between the cover plate 41 and the smoke hood 2 more secure, and enhances the overall rigidity of the smoke hood 2 and the cover plate 41, so that the cover plate 41 and the smoke hood 2 have a stronger ability to resist deformation.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An anti-overflow ring cooler upper water tank, a ring trolley (1), a smoke hood (2) and an upper water tank (3), wherein the smoke hood (2) covers the upper part of the ring trolley (1), two upper water tanks (3) are arranged, and the two upper water tanks (3) are respectively arranged on the inner and outer sides of the ring trolley (1), characterized in that: It also includes a sealing member (4), an electric valve (5) and a pressure detector (6), wherein the sealing member (4) includes a cover plate (41) and an insert plate (42), wherein the cover plate (41) is fixedly connected to the smoke hood (2) and covers the upper water tank (3), wherein the insert plate (42) is fixedly connected to the lower part of the cover plate (41) and extends downward to be inserted into the upper water tank (3), wherein the insert plate (42) extends downward and separates a first chamber (31) and a second chamber (32) in the upper water tank (3), wherein the bottom of the first chamber (31) is communicated with the bottom of the second chamber (32), wherein the first chamber (31) is located on a side close to the annular trolley (1) and is communicated with the interior of the smoke hood (2), and wherein the second chamber (32) is located on a side away from the annular trolley (1) and is communicated with the outside world; The electric valve (5) is mounted on the cover plate (41), and the lower end of the electric valve (5) is in communication with the first chamber (31), and the upper end of the electric valve (5) is in communication with the outside world; The pressure detector (6) is arranged on the smoke hood (2), and the pressure detector (6) extends into the smoke hood (2). The pressure detector (6) is electrically connected to the electric valve (5).

2. The anti-overflow upper water tank of the ring cooler according to claim 1, characterized in that: The electric valve (5) includes a valve body (51), a valve plate (52) and a rotary drive member (53), wherein the valve body (51) is arranged on the cover plate (41), the lower end of the valve body (51) is communicated with the first chamber (31), the valve plate (52) is rotatably connected to the upper end of the valve body (51), and the valve plate (52) can open or cover the upper end of the valve body (51) by rotating, and the rotary drive member (53) is arranged on the valve body (51), and the output end of the rotary drive member (53) is connected to the valve plate (52).

3. The anti-overflow upper water tank of the ring cooler according to claim 2, characterized in that: The electric valves (5) are arranged in plurality, and the electric valves (5) are arranged at intervals along the circumference of the annular trolley (1). The pressure detectors (6) are also arranged in plurality, and the pressure detectors (6) are arranged in one-to-one correspondence with the electric valves (5).

4. The anti-overflow upper water tank of an annular cooler according to any one of claims 1 to 3, characterized in that: It also includes a heat insulating member (7), two of which are arranged. The two heat insulating members (7) are arranged in a one-to-one correspondence with the two upper water tanks (3). The two heat insulating members (7) are respectively arranged on the inner and outer side walls of the annular trolley (1), and the heat insulating member (7) is located between the annular trolley (1) and the upper water tanks (3).

5. The anti-overflow upper water tank of the ring cooler according to any one of claims 1 to 3, characterized in that: It also includes an air intake pipe (8), which is arranged on the top of the smoke hood (2) and is connected to the inside of the smoke hood (2). An air inlet is arranged at the lower part of the annular trolley (1).

6. The anti-overflow upper water tank of the ring cooler according to claim 5, characterized in that: A plurality of the air intake pipes (8) are arranged, and the plurality of air intake pipes (8) are arranged at intervals along the smoke hood (2) in a ring shape.

7. The anti-overflow upper water tank of the ring cooler according to claim 6, characterized in that: The invention also includes a thermometer (9), which is detachably connected to the air intake pipe (8) and arranged at one end of the air intake pipe (8) close to the smoke hood (2). A plurality of thermometers (9) are arranged, and the thermometers (9) are arranged in a one-to-one correspondence with the air intake pipes (8).

8. The anti-overflow upper water tank of an annular cooler according to any one of claims 1 to 3, characterized in that: The inserting plate (42) is fixedly connected to the cover plate (41) by welding, and the cover plate (41) is fixedly connected to the smoke hood (2) by welding.

9. The anti-overflow upper water tank of an annular cooler according to any one of claims 1 to 3, characterized in that: It also includes a reinforcing rib (10), wherein a first end of the reinforcing rib (10) is fixedly connected to the smoke hood (2), and a second end of the reinforcing rib (10) is fixedly connected to the cover plate (41).

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