Upper seal assembly and ring cooler

Abstract

This invention discloses an upper sealing assembly and an annular cooler, relating to the field of annular cooler technology. Its main purpose is to avoid sealing deformation and leakage problems caused by the water tank's inability to hold enough water due to the movement of the trolley sideboard. The main technical solution of this invention is as follows: The upper sealing assembly is used in an annular cooler, which includes a sealing cover, a trolley sideboard, and a rotating frame. The sealing cover is disposed above the trolley sideboard, and the trolley sideboard is fixed relative to the rotating frame. The upper sealing assembly includes a water tank and an insert plate. The water tank is disposed on the side wall of the sealing cover, and the insert plate is fixed relative to the trolley sideboard, with at least a portion of the insert plate inserted into the water tank.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ring coolers, and particularly relates to an upper sealing assembly and a ring cooler. BACKGROUND

[0002] At present, the sintered ore cooling of domestic sintering plants mostly adopts ring coolers, and the water sealing form of ring coolers is gradually becoming a trend. In the sealing system of the mainstream ring cooler at present, the upper sealing and the lower sealing are included. The implementation mode of the upper sealing is that a water tank is arranged on the moving trolley fence, a plug plate is arranged on the sealing cover, and the plug plate is inserted into the water in the water tank to achieve the purpose of sealing the flue gas.

[0003] However, in actual application, since the water tank moves with the trolley fence, too much water cannot be stored, and in the running process, the sealing is prone to deformation, thereby causing leakage. Meanwhile, the weight of the water tank together with the water is a non-ignorable load for the rotating body, so that the driving power of the whole equipment is increased. SUMMARY

[0004] Therefore, the embodiments of the present application provide an upper sealing assembly and a ring cooler, and the main purpose is to avoid the problems of sealing deformation and leakage caused by too much water being unable to be stored due to the movement of the water tank with the trolley fence.

[0005] In order to achieve the above-mentioned purpose, the present application mainly provides the following technical solutions:

[0006] The first aspect of the present application provides an upper sealing assembly for a ring cooler, the ring cooler comprising a sealing cover, a trolley fence and a rotating frame, the sealing cover being arranged above the trolley fence, the trolley fence being fixed relative to the rotating frame, the upper sealing assembly comprising a water tank and a plug plate, the water tank being arranged on the side wall of the sealing cover, the plug plate being fixed relative to the trolley fence, and at least part of the plug plate being inserted into the water tank.

[0007] Optionally, the plug plate is a multi-section bending structure to form a gas flow path in a zigzag state.

[0008] Optionally, the plug plate comprises a first section, a second section, a third section and a fourth section, the first section being connected with the trolley fence, the first section extending in a direction away from the trolley fence in the radial direction of the ring cooler, the second section being connected with the first section, the second section extending in a direction close to the sealing cover in the axial direction of the ring cooler, the third section being connected with the second section, the third section extending in a direction close to the sealing cover in the radial direction of the ring cooler, the fourth section being connected with the third section, the fourth section extending in a direction close to the trolley fence in the axial direction of the ring cooler, and the fourth section being used for being inserted into the water tank.

[0009] Optionally, a first baffle and a second baffle are sequentially arranged along the flow direction within the airflow path, with the extension direction of the first baffle being opposite to that of the second baffle to form a labyrinth seal.

[0010] Optionally, the labyrinth seal further includes a third baffle, which is disposed at the inlet of the airflow path and extends in the same direction as the second baffle.

[0011] Optionally, the labyrinth seal further includes a fourth baffle, which is disposed downstream of the second baffle along the flow direction and is perpendicular to the flow direction.

[0012] Optionally, a dust collection trough is provided on the first section, and a dust discharge manhole is provided at the bottom of the dust collection trough.

[0013] Optionally, the cross-sectional area of ​​the dust collection trough gradually decreases in the downward direction.

[0014] Optionally, the insert plate further includes a fifth section, one end of which is connected to the first section and the other end of which is connected to the second section. The fifth section is inclined and is used to guide dust particles in the airflow into the dust settling trough.

[0015] A second aspect of the present invention provides an annular cooler, including the upper sealing assembly described in any one of the preceding claims.

[0016] By employing the above technical solution, the present invention has at least the following beneficial effects:

[0017] Embodiments of the present invention provide an upper sealing assembly and an annular cooler. The upper sealing assembly, by fixing the insert plate relatively to the trolley sideboard and partially inserting it into a water tank located on the side wall of the sealing cover, avoids the sealing deformation and leakage problems caused by the water tank's inability to hold too much water in traditional sealing methods where the trolley sideboard moves with it. This significantly improves the sealing performance of the annular cooler and effectively prevents flue gas leakage. Simultaneously, placing the water tank on the relatively fixed sealing cover reduces the load on moving parts such as the rotating frame and trolley sideboard, lowering the overall equipment's driving power, reducing energy consumption, and improving the equipment's operating efficiency and economy. Furthermore, by setting a labyrinth seal in the airflow path formed by the upper sealing assembly, the airflow direction of the dust-containing airflow can be continuously changed as it flows through the labyrinth seal, making the trajectory of dust particles more complex. In practical applications, dust particles are more likely to collide with the baffles forming the labyrinth seal under inertia, thereby losing kinetic energy and settling down. This reduces the dust content when the airflow enters the water tank, significantly reducing the amount of sludge in the tank, decreasing the amount of sludge removal work, and extending the sludge removal cycle. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an annular cooler according to an optional embodiment of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of the structure of a dust collection tank according to an optional embodiment of the present invention.

[0021] The reference numerals in the attached figures are as follows:

[0022] 1. Sealing cover; 2. Trolley sideboard; 3. Rotary frame; 4. Water tank; 5. Insert plate; 51. First section; 52. Second section; 53. Third section; 54. Fourth section; 55. Fifth section; 6. First baffle; 7. Second baffle; 8. Third baffle; 9. Fourth baffle; 10. Dust collection trough; 11. Dust discharge manhole. Detailed Implementation

[0023] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0027] See Figures 1 to 3 As shown, an embodiment of the first aspect of the present invention provides an upper sealing assembly, and an embodiment of the second aspect of the present invention provides an annular cooler.

[0028] The upper sealing component is used in the ring cooler, which can be a blower-type ring cooler, an exhaust-type ring cooler, etc., and the present invention does not limit it.

[0029] Specifically, the annular cooler includes, but is not limited to, a feeding device, a rotating device, a drive device, a discharge device, and a sealing device. These devices work together to ensure the annular cooler operates efficiently and stably. It should be noted that the feeding device consists of a feeding hopper and a conveying mechanism, which can precisely control the feeding speed and flow rate to ensure uniform material distribution on the trolley. The rotating device consists of a trolley and a rotating frame 3. The trolley carries the material to be cooled and moves in a circular motion driven by the rotating frame 3. The drive device is connected to the rotating device, providing strong power and precisely controlling the rotation speed to adapt to different material cooling rhythms under different production needs. The discharge device includes a discharge scraper and a discharge hopper. The discharge scraper scrapes the cooled material off the trolley, and the scraped material flows in the discharge hopper, allowing the cooled material to be discharged from the annular cooler promptly and smoothly. The sealing device consists of an upper sealing assembly and a lower sealing assembly. The upper sealing assembly is located at the junction of the sealing cover 1 and the trolley side panel 2. It prevents gas and dust inside the annular cooler from leaking into the external environment, while also preventing outside air from entering the annular cooler, providing a solid and reliable sealing guarantee for the efficient operation of the annular cooler. The lower sealing assembly is located at the junction of the trolley and other components, which can maintain the pressure balance inside the equipment, thereby improving cooling efficiency and energy utilization.

[0030] In the embodiments provided by this invention, see Figure 2 As shown, the upper sealing assembly includes a water tank 4 and an insert plate 5. The water tank 4 is disposed on the side wall of the sealing cover 1, and the insert plate 5 is fixed relative to the trolley side panel 2, and at least part of the insert plate 5 is inserted into the water tank 4.

[0031] By fixing the insert plate 5 relatively to the trolley side plate 2 and partially inserting it into the water tank 4 set on the side wall of the sealing cover 1, the sealing deformation and leakage problems caused by the water tank 4, which moves with the trolley side plate 2 in the traditional sealing method, are avoided. This greatly improves the sealing performance of the annular cooler and effectively prevents flue gas leakage. At the same time, setting the water tank 4 on the relatively fixed sealing cover 1 reduces the load on moving parts such as the rotating frame 3 and the trolley side plate 2, reduces the driving power of the entire equipment, reduces energy consumption, and improves the operating efficiency and economy of the equipment.

[0032] The trolley sideboards 2 are arranged around the rotating frame 3 and move as the rotating frame 3 rotates to achieve continuous material cooling and other processes. The sealing cover 1 is located above the trolley sideboards 2 and is used to seal and protect the internal structure of the ring cooler, preventing external impurities from entering the ring cooler and also helping to maintain a stable working environment inside the ring cooler.

[0033] The water tank 4 is mounted on the side wall of the sealing cover 1. Understandably, in practical applications, the sealing cover 1 remains stationary. Positioning the water tank 4 on the side wall of the sealing cover 1 keeps it relatively fixed, preventing it from moving with moving parts such as the trolley side panel 2. This increases the height of the water tank 4, thus maximizing its water capacity and better preventing gas and dust leakage from the annular cooler. It also more effectively prevents external air from entering the annular cooler. Furthermore, since the water tank 4 no longer moves with moving parts, its stability is greatly improved. This not only reduces the risk of seal failure due to water tank 4 movement but also minimizes the impact on the overall equipment structure. During operation, the movement of the water tank 4 will not generate additional vibration or noise, creating favorable conditions for the smooth operation of the annular cooler.

[0034] The insert plate 5 is located at the upper edge of the trolley sideboard 2, and at least a portion of the insert plate 5 is inserted into the water tank 4. Understandably, in practical applications, when the trolley sideboard 2 moves, the insert plate 5 also moves accordingly. The portion of the insert plate 5 inserted into the water tank 4 forms a dynamic sealing structure with the water tank 4, thereby preventing gas and dust inside the annular cooler from leaking to the external environment, while simultaneously preventing external air from entering the annular cooler, thus improving the sealing performance of the annular cooler.

[0035] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2 As shown, the insert plate 5 has a multi-segment bent structure to form a tortuous airflow path.

[0036] By designing the insert plate 5 as a multi-segmented bend structure, the airflow cannot flow in a straight line when passing through the upper sealing assembly. Instead, it is forced to continuously change direction along the bends of the insert plate 5. On the one hand, the tortuous airflow path increases the resistance to airflow, making it more difficult for the airflow to pass through the upper sealing assembly, thereby enhancing the sealing effect. On the other hand, the multi-segmented bend structure of the insert plate 5 also ensures that even if a small amount of airflow attempts to pass through the upper sealing assembly, its speed will be greatly reduced due to the tortuous airflow path, reducing the impact and damage of the airflow on the upper sealing assembly, and further ensuring the sealing performance of the annular cooler.

[0037] In some specific embodiments, the insert plate 5 is shaped like a wave with continuous arc-shaped bends, which causes the airflow to change direction continuously as it passes through, and the airflow is smoother due to the arc-shaped surface, reducing the generation of local eddies.

[0038] In other specific examples, the insert 5 is composed of multiple flat plate segments of different heights, forming a stepped structure between adjacent plate segments. This causes the airflow to rise or fall step by step when passing through the stepped insert 5, thereby changing the flow direction to achieve the best sealing effect and balance of airflow resistance.

[0039] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2 As shown, the insert plate 5 includes a first section 51, a second section 52, a third section 53, and a fourth section 54. The first section 51 is connected to the trolley side plate 2 and extends radially away from the trolley side plate 2 of the annular cooler. The second section 52 is connected to the first section 51 and extends axially towards the sealing cover 1 of the annular cooler. The third section 53 is connected to the second section 52 and extends radially towards the sealing cover 1 of the annular cooler. The fourth section 54 is connected to the third section 53 and extends axially towards the trolley side plate 2 of the annular cooler. The fourth section 54 is used to insert into the water tank 4.

[0040] By setting the first section 51, the second section 52, the third section 53, and the fourth section 54, multiple barriers can be applied to the airflow and dust. As the airflow passes through the connection points of each section of the baffle plate 5, its direction changes continuously, increasing the resistance to airflow. This makes it more difficult for the gas and dust inside the annular cooler to leak into the external environment, while also preventing outside air from entering the annular cooler.

[0041] The first section 51 is the joint between the insert plate 5 and the trolley sideboard 2. The first section 51 is connected to the trolley sideboard 2 and is used to fix the insert plate 5.

[0042] Specifically, the first segment 51 extends from the center of the annular cooler towards the edge, enabling the insert plate 5 to expand outward from the trolley side panel 2, providing initial support and guidance for the subsequent segmented structure.

[0043] The second segment 52 is connected to the first segment 51, which ensures the continuity and integrity of the insert plate 5 structure.

[0044] Specifically, the second segment 52 extends toward the sealing cover 1 in a direction parallel to the rotation axis of the ring cooler, so that the insert plate 5 begins to move closer to the sealing cover 1, in preparation for subsequent sealing and engagement with the sealing cover 1.

[0045] The third segment 53 is connected to the second segment 52, which can maintain the continuity of the insert plate 5 structure.

[0046] Specifically, the third segment 53 extends from the outer edge of the ring cooler toward the center, allowing the insert plate 5 to approach the sealing cover 1 and further adjust the position and angle of the insert plate 5 to better meet the sealing requirements of the sealing cover 1.

[0047] The fourth segment 54 is connected to the third segment 53, forming an overall structure that enables insertion and removal.

[0048] Specifically, the fourth segment 54 extends in a direction parallel to the rotation axis of the annular cooler toward the trolley side panel 2, so that the fourth segment 54 can eventually be inserted into the water tank 4 to achieve a sealed fit between the insert plate 5 and the water tank 4.

[0049] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2 As shown, a first baffle 6 and a second baffle 7 are sequentially arranged along the flow direction in the airflow path. The extension direction of the first baffle 6 is opposite to that of the second baffle 7 to form a labyrinth seal.

[0050] By setting up the first baffle 6 and the second baffle 7, the airflow must change direction multiple times as it passes through, forming a maze-like structure that provides multiple layers of obstruction, increasing the flow resistance. Even if a small amount of gas manages to pass through the first baffle 6, it will be blocked again when it encounters the second baffle 7, reducing the risk of leakage from the upper sealing assembly. Simultaneously, when dust-laden airflow flows through the maze seal, the constantly changing airflow direction makes the trajectory of dust particles more complex. Dust particles are more likely to collide with the baffles due to inertia, losing kinetic energy and settling down. This reduces the dust content when the airflow enters the water tank 4, significantly reducing the amount of sludge in the tank, decreasing the amount of sludge removal work, and extending the sludge removal cycle.

[0051] Among them, see Figure 2As shown, the airflow path is the channel formed by the insert plate 5, the trolley side panel 2, the sealing cover 1, and the water tank 4 on the sealing cover 1. When the annular cooler is running, the gas inside the annular cooler may attempt to leak into the external environment, or the outside air may want to enter the annular cooler, and these airflows will flow in this channel.

[0052] When the airflow moves in the airflow path, it will first encounter the first baffle 6 and then the second baffle 7.

[0053] Specifically, the extension direction of the first baffle 6 is opposite to that of the second baffle 7. For example, if the first baffle 6 is inclined upwards, then the second baffle 7 may be inclined downwards. This opposite extension direction forces the airflow to make a significant change in direction when passing through the first baffle 6 and the second baffle 7, thereby increasing the flow resistance and achieving a good sealing effect.

[0054] In this embodiment, the first baffle 6 is disposed on the first segment 51, and the first baffle 6 extends axially toward the water tank 4; the second baffle 7 is disposed at the bottom of the water tank 4, and the second baffle 7 extends axially toward the first segment 51.

[0055] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2 As shown, the labyrinth seal also includes a third baffle 8, which is located at the inlet of the airflow path and extends in the same direction as the second baffle 7.

[0056] By setting up a third baffle 8, a first line of defense is formed at the inlet of the airflow path. Working together with the first baffle 6 and the second baffle 7, it further increases the flow resistance. When the airflow enters the airflow path, it first encounters the third baffle 8, where its flow direction is initially changed. It then passes through the first baffle 6 and the second baffle 7 in sequence, requiring a change of direction at each baffle. This multiple obstruction significantly increases the difficulty of gas leakage, thereby significantly improving sealing performance. Furthermore, it is understandable that without the third baffle 8, the airflow might enter the airflow path with a large impact force, causing significant pressure on the subsequent baffles and sealing structure. The third baffle 8 buffers the impact force of the airflow, allowing it to be more evenly distributed throughout the labyrinth sealing structure, reducing the risk of seal failure due to excessive local pressure. Simultaneously, when dust-containing airflow enters the airflow path, the third baffle 8 can cause some dust to begin settling at the inlet of the airflow path. Because the airflow velocity decreases when it encounters the third baffle 8, dust particles are more likely to collide with the baffle and settle due to inertia. This reduces the amount of dust entering the labyrinth seal, lowering the risk of dust wear and blockage of the seal structure, while also helping to keep the working environment around the annular cooler clean.

[0057] In this embodiment, the inlet of the airflow path is the starting point of the channel. In this embodiment, the inlet of the airflow path is the end of the airflow path that connects to the interior of the annular cooler.

[0058] Specifically, a third baffle 8 is provided at the inlet of the airflow path. The third baffle 8 extends in the same direction as the second baffle 7, that is, the extension direction of the third baffle 8 is opposite to the extension direction of the first baffle 6. In practical applications, when the airflow enters the airflow path, it is first blocked by the third baffle 8 and its direction is changed. Then, the airflow continues to flow in the airflow path, passing through the first baffle 6 and the second baffle 7 in sequence.

[0059] In this embodiment, the third baffle 8 is disposed at the bottom of the sealing cover 1, and the third baffle 8 extends axially toward the trolley side panel 2 of the annular cooler.

[0060] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2 As shown, the labyrinth seal also includes a fourth baffle 9, which is disposed downstream of the second baffle 7 along the flow direction and is perpendicular to the flow direction.

[0061] The fourth baffle 9 adds another obstacle to the airflow path. After passing through the third baffle 8, the first baffle 6, and the second baffle 7, the original flow direction has been changed multiple times, and the speed has decreased. At this point, the fourth baffle 9, perpendicular to the flow direction, can more effectively block the continued flow of air, greatly increasing the difficulty of airflow passage, thereby further improving the sealing performance and reducing the possibility of gas leakage. At the same time, after the airflow is blocked and its direction is changed by multiple baffles, the kinetic energy of the dust particles it carries gradually decreases. When the airflow encounters the vertical fourth baffle 9, the airflow speed drops sharply, making it easier for dust particles to settle under the influence of gravity.

[0062] The flow direction refers to the direction of airflow within the labyrinth seal.

[0063] Among them, see Figure 2 As shown, the fourth baffle 9 is perpendicular to the flow direction, so when the airflow encounters the fourth baffle 9, due to its perpendicular direction, the airflow cannot continue to flow directly in the original direction and must change direction, thereby increasing the flow resistance of the airflow and improving the sealing performance of the labyrinth seal.

[0064] Specifically, in this embodiment, the fourth baffle 9 is disposed at the bottom of the water tank 4, and the fourth baffle 9 extends from the center of the annular cooler towards the edge.

[0065] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2As shown, a dust collection trough 10 is provided on the first section 51, and a dust discharge manhole 11 is provided at the bottom of the dust collection trough 10.

[0066] By setting up the dust settling trough 10, settled dust particles can be collected, preventing subsequent airflow from stirring up the settled dust particles. This reduces the dust content when the airflow enters the water tank 4, significantly reducing the amount of sludge in the water tank 4, decreasing the amount of sludge removal work, and extending the sludge removal cycle. The dust discharge manhole 11 provides a convenient channel for cleaning dust. When a certain amount of dust accumulates in the dust settling trough 10, it can be cleaned through the dust discharge manhole 11. Understandably, operators can use tools or manually remove the dust from the dust discharge manhole 11 to keep the dust settling trough 10 clean and ensure its continued effective dust collection function.

[0067] The dust settling trough 10 is disposed on the first section 51. The dust settling trough 10 has a certain depth and width to accommodate a certain amount of dust. The dust settling trough 10 can be rectangular, trapezoidal, etc., and the present invention does not limit it.

[0068] Specifically, the edge of the dust collection trough 10 is higher than the bottom of the trough to prevent dust from easily overflowing under the action of airflow.

[0069] The dust discharge hand hole 11 is located at the bottom of the dust settling tank 10. The dust discharge hand hole 11 is a relatively small opening, large enough to allow the operator's hand or small tools to pass through, and the present invention does not limit this size.

[0070] Specifically, after the annular cooler has been running for a period of time, the operator can open the dust discharge manhole 11 and use tools such as a small shovel and broom to clean the dust in the dust collection trough 10 into a suitable container for centralized disposal. This keeps the dust collection trough 10 clean and ensures that it continues to effectively collect dust.

[0071] In the above embodiments, see Figure 3 As shown, the cross-sectional area of ​​the dust collection trough 10 gradually decreases in the downward direction.

[0072] Specifically, as the downward cross-sectional area of ​​the dust settling trough 10 gradually decreases, the flow space within it also gradually narrows. This causes the airflow velocity to increase, and according to Bernoulli's principle, increased airflow velocity leads to decreased pressure. This pressure difference causes dust particles to settle to the bottom of the dust settling trough 10 more quickly, improving dust collection efficiency. Simultaneously, the narrower bottom space makes it less likely that settled dust will be stirred up again. Even with airflow fluctuations, the limited space reduces the disturbance to the dust, thus decreasing the likelihood of dust re-entering the airflow and ensuring the stability of dust collection.

[0073] In some possible implementations of the present invention disclosed herein, see [link to relevant documentation]. Figure 2As shown, the insert plate 5 also includes a fifth section 55. One end of the fifth section 55 is connected to the first section 51, and the other end is connected to the second section 52. The fifth section 55 is inclined and is used to guide dust particles in the airflow into the dust settling trough 10.

[0074] The tilt of the fifth segment 55 provides a specific flow direction for dust particles. When the airflow carrying dust passes through the baffle 5, the fifth segment 55 guides the dust towards the dust settling trough 10. Compared to the case without the fifth segment 55, dust is more likely to fall accurately into the dust settling trough 10 instead of drifting randomly in the surrounding space, thereby improving dust collection efficiency.

[0075] Specifically, the fifth section 55 can be tilted at a certain angle relative to either the horizontal or vertical direction, causing the airflow to change direction and speed as it passes through. This change helps dust particles separate from the airflow and slide down the fifth section 55 into the dust settling trough 10 under the influence of gravity.

[0076] It will be readily understood by those skilled in the art that the aforementioned advantageous methods can be freely combined and superimposed without conflict.

[0077] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above are merely preferred embodiments of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. An upper sealing assembly for an annular cooler, the annular cooler comprising a sealing cover (1), a trolley sideboard (2), and a rotating frame (3), the sealing cover (1) being disposed above the trolley sideboard (2), the trolley sideboard (2) being fixed relative to the rotating frame (3), characterized in that, Includes a water tank (4) and a insert plate (5), the water tank (4) being disposed on the side wall of the sealing cover (1), the insert plate (5) being fixed relative to the trolley sideboard (2), and at least part of the insert plate (5) being inserted into the water tank (4); The insert plate (5) has a multi-segment bent structure to form a tortuous airflow path; The insert plate (5) includes a first section (51), a second section (52), a third section (53), and a fourth section (54). The first section (51) is connected to the trolley sideboard (2) and is disposed on the side wall of the trolley sideboard (2). The first section (51) extends radially away from the trolley sideboard (2) of the annular cooler. The second section (52) is connected to the first section (51) and extends axially towards the sealing cover (1) of the annular cooler. The third section (53) is connected to the second section (52) and extends radially towards the sealing cover (1) of the annular cooler. The fourth section (54) is connected to the third section (53) and extends axially towards the trolley sideboard (2) of the annular cooler. The fourth section (54) is used to insert into the water tank (4). The first section (51) is provided with a dust collection trough (10), and the bottom of the dust collection trough (10) is provided with a dust discharge hand hole (11). The insert plate (5) also includes a fifth section (55), one end of which is connected to the first section (51) and the other end is connected to the second section (52). The fifth section (55) is inclined and is used to guide dust particles in the airflow into the dust collection trough (10).

2. The upper sealing assembly according to claim 1, characterized in that, A first baffle (6) and a second baffle (7) are sequentially arranged along the flow direction in the airflow path. The extension direction of the first baffle (6) is opposite to that of the second baffle (7) to form a labyrinth seal.

3. The upper sealing assembly according to claim 2, characterized in that, The labyrinth seal also includes a third baffle (8), which is disposed at the inlet of the airflow path and extends in the same direction as the second baffle (7).

4. The upper sealing assembly according to claim 2, characterized in that, The labyrinth seal further includes a fourth baffle (9), which is disposed downstream of the second baffle (7) along the flow direction and is perpendicular to the flow direction.

5. The upper sealing assembly according to claim 1, characterized in that, The cross-sectional area of ​​the dust collection trough (10) gradually decreases in the downward direction.

6. An annular cooler, characterized in that, Includes the upper sealing assembly as described in any one of claims 1-5.

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