A composite structure barrel cooling machine cylinder

Abstract

The utility model discloses a kind of composite structure drum cooling machine barrel, including the circular barrel with feed inlet and discharge outlet being equipped at both ends, the outer wall of barrel is equipped with jacket space, and heat exchange water flow is circulated in jacket space;Barrel interior includes the front heat exchange section of being arranged in front section and the rear heat exchange section of being arranged in rear section;The front heat exchange section includes the front material-moving screw of being arranged in the front section in barrel and the central cylinder located in the rear side of front material-moving screw, central cylinder is coaxially arranged with barrel, and multiple peripheral steel pipes are evenly arranged in annular space between central cylinder and barrel;The rear heat exchange section includes the rear section material-moving sheet of being arranged in rear section in barrel.The utility model can have high efficiency heat exchange, uniform discharge, slow down the impact force of flow slag, prevent barrel deformation, prolong the service life of barrel.

Description

Technical Field

[0001] This utility model relates to a composite structure drum cooler body, belonging to the technical field of drum cooler. Background Technology

[0002] In the field of industrial cooling equipment, three major technical routes have been developed for the waste heat recovery and safe transportation of high-temperature materials (such as metallurgical slag and chemical fly ash): multi-tube coolers, membrane coolers, and drum coolers. Among them, drum coolers are widely used in the processing of solid particulate materials due to their advantages such as continuous operation and strong adaptability.

[0003] However, the traditional cooler cylinder structure has the following common defects: First, the cylinder relies on external wall spray cooling water for indirect heat exchange, resulting in a low heat transfer coefficient and a waste heat recovery rate of less than 30%. Second, the uneven material distribution in traditional multi-tube coolers causes heat exchange dead zones, and slag flow directly impacts the outlet, threatening equipment safety. For high-temperature materials (such as blast furnace slag), traditional equipment lacks an active anti-slag flow structure, and the material is prone to axial flow, resulting in a large axial temperature gradient, causing the cylinder to bend and deform. In addition, the material temperature at the discharge end is high, requiring frequent shutdowns to protect the downstream equipment and the safety of surrounding maintenance personnel.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] This utility model addresses the shortcomings of the prior art by providing a composite structure drum cooler body that can simultaneously achieve efficient heat exchange, uniform material discharge, reduce the impact of slag flow, prevent drum deformation, and extend the service life of the drum.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: A composite structure drum cooler cylinder includes a circular cylinder with an inlet and an outlet at both ends, and a jacketed space is provided on the outer wall of the cylinder, through which hot water flows. The interior of the cylinder includes a front heat exchange section located at the front and a rear heat exchange section located at the rear. The front heat exchange section includes a front feeding auger located in the front section of the cylinder and a central cylinder located behind the front feeding auger. The central cylinder is coaxially arranged with the cylinder and multiple peripheral steel pipes are evenly distributed in the annular space between the central cylinder and the cylinder. The rear heat exchange section includes a rear material feeding plate disposed in the rear section of the cylinder.

[0007] Furthermore, each of the surrounding steel pipes is equipped with a guide blade.

[0008] Furthermore, the rear-section material-lifting blades are arranged in a spiral pattern inside the cylinder, and one side of the rear-section material-lifting blades is provided with lifting blades, the cross-section of which is L-shaped.

[0009] Furthermore, one end of the lifting blade is welded to the side of the rear material-pushing plate, and the lifting blade is perpendicular to the side of the rear material-pushing plate.

[0010] Furthermore, the rear end of the cylinder is provided with a rear annular water tank, the front end of the cylinder is provided with a front annular water tank, and the rear heat exchange section of the cylinder is provided with multiple pipe rows. The rear annular water tank, the front annular water tank and the pipe rows are connected by pipes.

[0011] Furthermore, the pipe bank is a loop-shaped pipe formed by multiple branch pipes, the pipe bank is arranged along the axial direction of the cylinder, and multiple pipe banks are evenly arranged circumferentially inside the cylinder.

[0012] Furthermore, a water flow sleeve is provided at the center of the rear annular water tank. The water flow sleeve is connected to the jacket space of the cylinder through a pipe. The jacket space is connected to the front annular water tank. Multiple outer pipes are axially arranged on the outer side of the cylinder. The front end of the outer pipe is connected to the front annular water tank, and the rear end of the outer pipe is connected to the pipe bank.

[0013] Furthermore, the pipe bank and the outer pipe are arranged in a one-to-one correspondence, and the rear end of the outer pipe is connected to the end of the pipe bank near the rear end of the annular water tank.

[0014] Furthermore, the water flow sleeve includes an inner cylinder and an annular outer cylinder outside the inner cylinder. The inner cylinder of the water flow sleeve is connected to the jacket space, and the outer cylinder of the water flow sleeve is connected to the rear annular water tank through a return water pipe.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following advantages: High-temperature materials undergo initial heat exchange with cooling water in the front heat exchange section and the jacket space. Guide vanes are installed in multiple peripheral steel pipes to effectively intercept uncooled material, preventing slag from impacting downstream equipment and materials. A second heat exchange occurs in the rear heat exchange section with cooling water in the pipe bank and the jacket space, further improving the heat exchange efficiency.

[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the internal structure of this utility model; Figure 2 yes Figure 1 Sectional view at the center CC; Figure 3 yes Figure 1 Sectional view at the middle DD; Figure 4 This is a schematic diagram of water circulation in this utility model.

[0018] In the picture, 1-Front feeding auger, 2-Central cylinder, 3-Peripheral steel pipe, 4-Guide blade, 5-Rear feeding blade, 6-Lifting blade, 7-Pipe bank, 8-Outer pipe, 9-Rear annular water tank, 10-Water flow sleeve, 11-Front annular water tank, 12-Jacket space, 13-Return water pipe. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0020] like Figure 1-3 As shown, this utility model provides a composite structure drum cooler cylinder, including a circular cylinder with a feed inlet and a discharge outlet at both ends, and a jacket space 12 on the outer wall of the cylinder, in which hot water flows. The interior of the cylinder includes a front heat exchange section located at the front and a rear heat exchange section located at the rear. Figure 1 The right end of the middle cylinder is the front end.

[0021] The front heat exchange section includes a front feeding screw 1 located in the front section of the cylinder and a central cylinder 2 located behind the front feeding screw 1. The central cylinder 2 is coaxially arranged with the cylinder body, and multiple peripheral steel pipes 3 are evenly distributed in the annular space between the central cylinder 2 and the cylinder body. The rear heat exchange section includes a rear material feeding plate 5 disposed in the rear section of the cylinder.

[0022] High-temperature material enters the cylinder through the front feeding auger 1 at the front end of the cylinder. The cylinder rotates around its axis. Under the action of centrifugal force, most of the high-temperature material passes through the peripheral steel pipes 3 evenly, while some of the high-temperature material passes through the central cylinder 2. The peripheral steel pipes 3 are closer to the jacket space 12 of the cylinder, which enhances the heat exchange during the initial cooling stage. In addition, multiple peripheral steel pipes 3 are evenly arranged around the central cylinder 2, which plays a role in uniformly distributing the material.

[0023] Furthermore, each of the peripheral steel pipes 3 is equipped with a guide blade 4. The guide blade 4 effectively intercepts uncooled material, preventing slag from impacting downstream equipment and materials.

[0024] The rear section of the material-lifting blade 5 is arranged in a spiral pattern inside the cylinder. A lifting blade 6 is provided on one side of the rear section of the material-lifting blade 5, and the cross-section of the lifting blade 6 is L-shaped.

[0025] One end of the lifting blade 6 is welded to the side of the rear material-pushing plate 5, and the lifting blade 6 is perpendicular to the side of the rear material-pushing plate 5. When the material enters the rear heat exchange section, the rotating cylinder throws the material up, forming a material curtain of a certain thickness under the action of the lifting blade. During the rotation of the cylinder, heat exchange occurs continuously, and the material is evenly dispersed by centrifugal force, thus enhancing the heat exchange effect.

[0026] like Figure 4 The rear end of the cylinder is provided with a rear annular water tank 9, the front end of the cylinder is provided with a front annular water tank 11, and the rear heat exchange section of the cylinder is provided with multiple pipe rows 7. The rear annular water tank 9, the front annular water tank 11 and the pipe rows 7 are connected by pipes.

[0027] The pipe array 7 is a loop-shaped pipe formed by multiple branch pipes. The pipe array 7 is arranged along the axial direction of the cylinder, and multiple pipe arrays 7 are evenly arranged circumferentially inside the cylinder.

[0028] A water flow sleeve 10 is provided at the center of the rear annular water tank 9. The water flow sleeve 10 is connected to the jacket space 12 of the cylinder through a pipe. The jacket space 12 is connected to the front annular water tank 11. Multiple outer pipes 8 are provided axially on the outer side of the cylinder. The front end of the outer pipe 8 is connected to the front annular water tank 11, and the rear end of the outer pipe 8 is connected to the pipe row 7.

[0029] The pipe array 7 and the outer pipe 8 are arranged in a one-to-one correspondence, and the rear end of the outer pipe 8 is connected to the end of the pipe array 7 near the rear end of the annular water tank 9.

[0030] The water flow sleeve 10 includes an inner cylinder and an annular outer cylinder outside the inner cylinder. The inner cylinder of the water flow sleeve 10 is connected to the jacket space 12, and the outer cylinder of the water flow sleeve 10 is connected to the rear annular water tank 9 through the return water pipe 13.

[0031] Cooling water flows from the inner cylinder of the water flow sleeve 10 into the jacket space 12, then from the jacket space 12 into the front annular water tank 11, and then through the outer pipe 8 into the pipe bank 7. Finally, the water flows from the pipe bank 7 into the rear annular water tank 9 and out from the outer cylinder of the water flow sleeve 10. The cooling water flows counter-currently in the inner cylinder (opposite to the material flow direction), achieving efficient heat transfer through forced convection heat exchange between the pipe bank 7 and the jacket space 12.

[0032] The high-temperature material undergoes its first heat exchange with the cooling water in the front heat exchange section and the jacket space 12. Guide vanes 4 are installed in multiple peripheral steel pipes 3, effectively intercepting uncooled material and preventing slag from impacting downstream equipment and materials. In the rear heat exchange section, it undergoes a second heat exchange with the cooling water in the pipe bank 7 and the jacket space 12, further improving the heat exchange efficiency.

[0033] The above description provides examples of the preferred embodiments of this utility model. Any aspects not detailed herein are common knowledge to those skilled in the art. The scope of protection of this utility model is determined by the claims. Any equivalent modifications based on the technical teachings of this utility model are also within the scope of protection of this utility model.

Claims

1. A composite structure drum cooler cylinder, characterized in that: It includes a circular cylinder with an inlet and an outlet at both ends, and a jacketed space (12) is provided on the outer wall of the cylinder, through which hot water flows; The interior of the cylinder includes a front heat exchange section located at the front and a rear heat exchange section located at the rear. The front heat exchange section includes a front feeding screw (1) located in the front section of the cylinder and a central cylinder (2) located behind the front feeding screw (1). The central cylinder (2) is coaxially arranged with the cylinder body, and multiple peripheral steel pipes (3) are evenly distributed in the annular space between the central cylinder (2) and the cylinder body. The rear heat exchange section includes a rear material feeding plate (5) disposed in the rear section of the cylinder.

2. The composite structure drum cooler cylinder as described in claim 1, characterized in that: Each of the peripheral steel pipes (3) is equipped with a guide blade (4).

3. The composite structure drum cooler cylinder as described in claim 1, characterized in that: The rear section of the material-lifting blade (5) is arranged in a spiral pattern inside the cylinder. A lifting blade (6) is provided on one side of the rear section of the material-lifting blade (5), and the cross-section of the lifting blade (6) is L-shaped.

4. The composite structure drum cooler cylinder as described in claim 3, characterized in that: One end of the lifting blade (6) is welded to the side of the rear material-pushing plate (5), and the lifting blade (6) is perpendicular to the side of the rear material-pushing plate (5).

5. The composite structure drum cooler cylinder as described in claim 1, characterized in that: The rear end of the cylinder is provided with a rear annular water tank (9), the front end of the cylinder is provided with a front annular water tank (11), and the rear heat exchange section of the cylinder is provided with multiple pipe rows (7). The rear annular water tank (9), the front annular water tank (11) and the pipe rows (7) are connected by pipes.

6. The composite structure drum cooler cylinder as described in claim 5, characterized in that: The pipe array (7) is a loop-shaped pipe formed by multiple branch pipes. The pipe array (7) is arranged along the axial direction of the cylinder, and multiple pipe arrays (7) are evenly arranged circumferentially inside the cylinder.

7. The composite structure drum cooler cylinder as described in claim 6, characterized in that: A water flow sleeve (10) is provided at the center of the rear annular water tank (9). The water flow sleeve (10) is connected to the jacket space (12) of the cylinder through a pipe. The jacket space (12) is connected to the front annular water tank (11). Multiple outer pipes (8) are provided axially on the outer side of the cylinder. The front end of the outer pipe (8) is connected to the front annular water tank (11), and the rear end of the outer pipe (8) is connected to the pipe row (7).

8. The composite structure drum cooler cylinder as described in claim 7, characterized in that: The pipe bank (7) and the outer pipe (8) are arranged in a one-to-one correspondence, and the rear end of the outer pipe (8) is connected to the end of the pipe bank (7) near the rear end of the annular water tank (9).

9. The composite structure drum cooler cylinder as described in claim 8, characterized in that: The water flow sleeve (10) includes an inner cylinder and an annular outer cylinder outside the inner cylinder. The inner cylinder of the water flow sleeve (10) is connected to the jacket space (12), and the outer cylinder of the water flow sleeve (10) is connected to the rear annular water tank (9) through the return water pipe (13).

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