Sealing assembly cooling mechanism of rotary drying machine

Abstract

The utility model relates to the technical field of cooling, in particular to a sealing assembly cooling mechanism of a rotary drying machine, which comprises cooling ring pipe assemblies arranged at two ends of the rotary drying machine, each cooling ring pipe assembly comprises a ring pipe, a spacer ring is arranged in each ring pipe, each ring pipe is divided into two independent cavities by the spacer ring, and the two independent cavities are communicated with each other. A plurality of cooling water branch pipes are annularly and uniformly arrayed on the circular ring pipe in the range of the cooling water cavity at intervals, the end parts of the cooling water branch pipes are connected to cooling water nozzles, a plurality of high-pressure gas branch pipes are annularly and uniformly arrayed on the circular ring pipe in the range of the high-pressure gas cavity at intervals, and high-pressure gas nozzles are arranged at the end parts of the high-pressure gas branch pipes. Compressed air and cooling water can be sprayed at the same time to conduct contact cooling on the sealing assembly of the rotary drying machine, the cooling effect of the sealing assembly is good, the situation that the sealing assembly is abraded and damaged due to overheating can be reduced, and the using stability of the rotary drying machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling, in particular to a cooling mechanism for a sealing assembly of a rotary dryer. Background Art

[0002] A rotary dryer is an industrial drying device, which consists of a rotating cylindrical body, a supporting device and a suitable sealing assembly, and is usually used in industries such as chemistry, building materials, and metallurgy. In a rotary dryer, materials come into contact with hot air streams (which may be hot air or combustion gases) inside the cylindrical body, thereby achieving drying.

[0003] The sealing of a rotary dryer is one of the key technologies. Its function is to prevent the leakage of hot air streams and materials, and at the same time prevent the air in the atmosphere from entering. This can improve the drying efficiency, reduce energy consumption, and avoid environmental pollution. The cooling of the sealing assembly is to prevent the sealing part from aging, wearing or being damaged due to high temperature, extend the service life of the equipment, and maintain a good sealing effect.

[0004] In the modern chemical industry, rotary dryers are widely used because of their large production capacity and compliance with energy conservation, emission reduction and environmental protection requirements. With the rapid development of these industries, the requirements for the size and performance of rotary dryers have also increased. In particular, after the diameter of the central discharge pipe increases, the diameter of its sealing surface increases accordingly, and the frictional linear velocity rises. Therefore, the existing discharge sealing assembly is prone to wear due to overheating, resulting in material leakage. Summary of the Utility Model

[0005] The utility model provides a cooling mechanism for a sealing assembly of a rotary dryer to solve the above technical deficiencies. It can use compressed air and cooling water to impact on the sealing assembly for contact cooling, so as to avoid performance degradation such as wear caused by overheating, and make the performance of the rotary dryer more stable.

[0006] The utility model discloses a cooling mechanism for a sealing component of a rotary dryer, which includes cooling ring pipe assemblies arranged at both ends of the rotary dryer. The cooling ring pipe assembly includes a circular ring pipe, and a partition ring is arranged inside the circular ring pipe. The partition ring divides the annular pipe into two independent cavities, one of which is a high-pressure gas cavity and the other is a cooling water cavity. A high-pressure gas main pipe is arranged on the circular ring pipe within the range of the high-pressure gas cavity, and the high-pressure gas main pipe is communicated with the high-pressure gas cavity. A cooling water main pipe is arranged on the circular ring pipe within the range of the cooling water cavity, and the cooling water main pipe is communicated with the cooling water cavity. A number of cooling water branch pipes are arranged on the circular ring pipe within the range of the cooling water cavity in a uniformly spaced annular array, and the cooling water branch pipes are communicated with the cooling water cavity. The ends of the cooling water branch pipes are connected to cooling water nozzles. A number of high-pressure gas branch pipes are arranged on the circular ring pipe within the range of the high-pressure gas cavity in a uniformly spaced annular array, and the ends of the high-pressure gas branch pipes are provided with high-pressure gas nozzles. The cooling water nozzles are evenly spaced within a circle, and the high-pressure gas nozzles are evenly spaced within the same circle. The high-pressure gas nozzles and the cooling water nozzles both face the sealing component on the same side of the rotary dryer.

[0007] The number of the high-pressure gas nozzles and the cooling water nozzles on the same circular ring pipe is the same, and the cooling water nozzles and the high-pressure gas nozzles are arranged alternately in the circumferential direction. The distance between any cooling water nozzle and the adjacent high-pressure gas nozzles on both sides is the same, and the distance between any high-pressure gas nozzle and the adjacent cooling water nozzles on both sides is the same.

[0008] The centers of the circles where the cooling water nozzles are located and the centers of the circles where the high-pressure gas nozzles are located are both on the central axis of the cylindrical body of the rotary dryer, and the diameter of the circle where the cooling water nozzles are located is smaller than the diameter of the circle where the high-pressure gas nozzles are located.

[0009] The cooling mechanism for the sealing component of the rotary dryer obtained by the utility model can simultaneously spray compressed air and cooling water to conduct contact cooling on the sealing component of the rotary dryer. The cooling effect of the sealing component is good, which can reduce the situation of wear and damage of the sealing component caused by overheating, and improve the use stability of the rotary dryer. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the utility model;

[0011] Figure 2 is a schematic structural diagram of the cooling ring pipe assembly on the side with a larger diameter of the rotary dryer;

[0012] Figure 3 is a schematic structural diagram of the cooling ring pipe assembly on the side with a smaller diameter of the rotary dryer;

[0013] Figure 4 is Figure 2 a partial side structural diagram of the shown cooling ring pipe assembly. Detailed implementation manners

[0014] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features, and their effects of the present utility model as follows.

[0015] Embodiment 1:

[0016] As Figure 1 shown, the present utility model discloses a cooling mechanism for a sealing assembly of a rotary dryer, including cooling ring pipe assemblies 2 provided at both ends of the rotary dryer 1. Among them, the cooling ring pipe assembly 2 on the side with a larger diameter of the rotary dryer 1 is: the inner cooling ring pipe assembly 2, as Figure 2 、 Figure 4 shown; the cooling ring pipe assembly 2 on the side with a smaller diameter of the rotary dryer 1 is: the outer cooling ring pipe assembly 2, as Figure 3 shown; the cooling ring pipe assembly 2 includes a circular ring pipe 3, and a partition ring 4 is arranged inside the circular ring pipe 3. The partition ring 4 divides the annular pipe into two independent cavities, one of which is a high-pressure gas cavity 7, and the other is a cooling water cavity 8. A high-pressure gas main pipe 5 is arranged on the circular ring pipe 3 within the range of the high-pressure gas cavity 7, and the high-pressure gas main pipe 5 is communicated with the high-pressure gas cavity 7. A cooling water main pipe 6 is arranged on the circular ring pipe 3 within the range of the cooling water cavity 8, and the cooling water main pipe 6 is communicated with the cooling water cavity 8. A plurality of cooling water branch pipes 10 are arranged on the circular ring pipe 3 within the range of the cooling water cavity 8 in a circumferentially spaced and evenly arrayed manner, and the cooling water branch pipes 10 are communicated with the cooling water cavity 8. The ends of the cooling water branch pipes 10 are connected to cooling water nozzles 11. A plurality of high-pressure gas branch pipes 9 are arranged on the circular ring pipe 3 within the range of the high-pressure gas cavity 7 in a circumferentially spaced and evenly arrayed manner, and the ends of the high-pressure gas branch pipes 9 are provided with high-pressure gas nozzles 12. The cooling water nozzles 11 are evenly spaced within a circumference, and the high-pressure gas nozzles 12 are evenly spaced within the same circumference. The high-pressure gas nozzles 12 and the cooling water nozzles 11 both face the sealing assembly on the same side of the rotary dryer 1.

[0017] In actual work, connect the high-pressure gas main pipe 5 of the cooling ring pipe assembly 2 to a high-pressure gas source. The high-pressure gas source supplies compressed air to the high-pressure gas main pipe 5. The compressed air then enters the high-pressure gas chamber 7 and is ejected from the high-pressure gas nozzles 12 on the high-pressure gas branch pipes 9. Connect the cooling water main pipe 6 of the cooling ring pipe assembly 2 to a cooling water source. The cooling water source can transport the cooling water to the cooling water main pipe 6 through a water pump. The cooling water then enters the cooling water chamber 8 and is ejected from the cooling water nozzles 11 on the cooling water branch pipes 10. The ejected cooling water and compressed air act on the sealing assembly of the rotary dryer 1, come into contact with the sealing assembly, and cool the sealing assembly. Since the compressed air and the cooling water directly contact the sealing assembly, the cooling effect on the sealing assembly is good. At the same time, the cooling ring pipe assembly 2 is fixed to the rotary dryer 1. Therefore, when the sealing assembly rotates with the cylindrical body of the rotary dryer 1, the cooling water and the compressed air can be ejected to the entire circumferential range of the sealing assembly, so the cooling effect of each part of the sealing assembly remains balanced and stable.

[0018] Eight cooling water nozzles 11 and eight high-pressure gas nozzles 12 are provided on each cooling ring pipe assembly 2.

[0019] The number of the high-pressure gas nozzles 12 and the cooling water nozzles 11 on the same circular pipe 3 is the same, and the cooling water nozzles 11 and the high-pressure gas nozzles 12 are alternately arranged in the circumferential direction. The distance between any cooling water nozzle 11 and the adjacent high-pressure gas nozzles 12 on both sides is the same, and the distance between any high-pressure gas nozzle 12 and the adjacent cooling water nozzles 11 on both sides is the same.

[0020] The high-pressure gas nozzles 12 and the cooling water nozzles 11 are alternately arranged at intervals in the circumferential direction. In actual work, when the sealing assembly rotates, after the cooling water nozzles 11 eject the cooling water onto the sealing assembly, the high-pressure gas nozzles 12 eject the compressed air onto the sealing assembly with cooling water on its surface. In this process, part of the heat can be carried away when the cooling water contacts the sealing assembly, and part of the heat can be carried away when the compressed air contacts the sealing assembly. At the same time, the compressed air can quickly evaporate the moisture on the sealing assembly, and part of the heat can also be carried away in this process. Therefore, by using the combined action of the compressed air and the cooling water on the rotating sealing assembly, the sealing assembly can be effectively cooled and its stable performance can be maintained.

[0021] The center of the circle where the cooling water nozzles 11 are located and the center of the circle where the high-pressure gas nozzles 12 are located are both on the central axis of the cylindrical body of the rotary dryer 1, and the diameter of the circle where the cooling water nozzles 11 are located is smaller than the diameter of the circle where the high-pressure gas nozzles 12 are located.

[0022] With the cooling water nozzles 11 located on the inner layer and the high-pressure gas nozzles 12 located on the outer layer, splashing of the cooling water outward can be reduced during operation, and the use effect is better.

[0023] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0024] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0025] In the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0026] The above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Although the present utility model has been disclosed above with the preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A sealing assembly cooling mechanism for a rotary dryer, characterized in that: The invention comprises a cooling ring pipe assembly arranged at both ends of a rotary dryer, wherein the cooling ring pipe assembly comprises a circular ring pipe, a spacer ring is arranged inside the circular ring pipe, the spacer ring divides the circular pipe into two independent cavities, one of which is a high-pressure air cavity and the other is a cooling water cavity, a high-pressure gas main pipe is arranged on the circular ring pipe within the range of the high-pressure air cavity, the high-pressure gas main pipe is communicated with the high-pressure air cavity, a cooling water main pipe is arranged on the circular ring pipe within the range of the cooling water cavity, the cooling water main pipe is communicated with the cooling water cavity, a plurality of cooling water branch pipes are arranged in a circular array with uniform intervals on the circular ring pipe within the range of the cooling water cavity, the cooling water branch pipes are communicated with the cooling water cavity, the ends of the cooling water branch pipes are connected to cooling water nozzles, a plurality of high-pressure air branch pipes are arranged in a circular array with uniform intervals on the circular ring pipe within the range of the high-pressure air cavity, a high-pressure air nozzle is arranged at the end of the high-pressure air branch pipe, the cooling water nozzles are evenly spaced in a circle, the high-pressure air nozzles are evenly spaced in the same circle, and the high-pressure air nozzles and the cooling water nozzles are both facing the sealing assembly on the same side of the rotary dryer.

2. The sealing assembly cooling mechanism of a rotary dryer according to claim 1, characterized in that: The number of the high-pressure air nozzles and cooling water nozzles on the same circular tube is the same, and the cooling water nozzles and the high-pressure air nozzles are alternately arranged in the circumferential direction. The spacing between any cooling water nozzle and the high-pressure air nozzles on both adjacent sides is the same, and the spacing between any high-pressure air nozzle and the cooling water nozzles on both adjacent sides is the same.

3. The sealing assembly cooling mechanism of a rotary dryer according to claim 2, characterized in that: The centers of the circles where the cooling water nozzles are located and the circles where the high-pressure air nozzles are located are both located on the central axis of the cylindrical body of the rotary dryer, and the diameter of the circle where the cooling water nozzles are located is smaller than the diameter of the circle where the high-pressure air nozzles are located.

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