Multi-stage cooling device of roller slag cooler

Abstract

The utility model relates to the technical field of cooling devices of roller slag coolers, in particular to a multi-stage cooling device of a roller slag cooler, which comprises an outer roller, an inner roller is mounted on the inner wall of the outer roller, a left roller cover is mounted on the left side of the outer roller, and a right roller cover is mounted on the right side of the outer roller. A discharging opening is formed in the lower end of the right roller cover, an air cooling connector is installed on the surface of the left roller cover and communicates with a gap between the outer roller and the inner roller, a cooling assembly is installed in the right roller cover, and the cooling assembly comprises a rotating connector. According to the utility model, the cooling assembly is arranged, so that the pipelines for conveying the cooling medium are distributed in a multi-stage manner, and the cooling medium can be quickly discharged after the circulation path of the cooling medium is a circle, so that the problems that the circulation path of the cooling medium is repeated, the cooling effect of the cooling medium in the rear area is reduced, and the cooling of the equipment is unbalanced are solved; and the cooling effect and the balance of the cooling device are further improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cooling devices for drum slag coolers, and in particular to multi-stage cooling devices for drum slag coolers. Background Technology

[0002] The drum slag cooler is an important piece of equipment used in industries such as thermal power generation and metallurgy to cool high-temperature slag. It plays a key role in improving energy efficiency and ensuring the stable operation of production systems. The drum slag cooler can effectively reduce the temperature of slag, recover waste heat from the slag for preheating air or heating water, improve energy utilization, reduce damage to downstream equipment caused by high-temperature slag, extend equipment service life, and help related industries save energy, reduce emissions, and promote green production.

[0003] Existing technologies, such as the utility model patent with publication number CN216924388U, disclose a cooling circulation device for a drum slag cooler. This patent uses a base with a cooling outer cylinder fixedly connected to it. An inner drum is set inside the cooling outer cylinder, and cooling water channels are fixedly connected inside the cooling outer cylinder. The cooling water channels are spiral-shaped and spirally wrap around the outside of the inner drum. A first end cover and a second end cover are fixedly installed at both ends of the cooling outer cylinder. Both the first end cover and the second end cover are annular structures. The two ends of the inner drum extend out of the outer sides of the first end cover and the second end cover, respectively. This invention solves the problem that the cooling water chamber of existing drum slag coolers is generally composed of one or more chambers. However, the heat convection in each chamber affects each other and cannot form a progressive cooling effect. That is, the temperature difference between the inlet and outlet of the cooling water chamber is not large, resulting in poor cooling effect.

[0004] In the process of cooling the slag generated during production using a drum slag cooler, existing cooling devices, such as those described above, employ a spiral pipe for transporting the cooling medium. During operation, the cooling medium flows through the spiral pipe in a progressive manner. As the cooling medium continues to flow backward in the pipe, it continuously absorbs heat transferred from the front, and its own temperature gradually increases. When the cooling medium reaches the rear of the pipe, its temperature has already risen significantly, reducing the temperature difference between it and the equipment, resulting in a substantial decrease in cooling capacity and causing an uneven overall cooling effect of the cooling device. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the existing technology where the cooling medium continuously flows backward in the pipeline, constantly absorbing heat transferred from the front, and its own temperature gradually increases. When the cooling medium flows to the rear of the pipeline, its temperature has risen significantly, the temperature difference between it and the equipment decreases, the cooling capacity drops sharply, and the overall cooling effect of the cooling device is uneven. The invention proposes a multi-stage cooling device for a drum slag cooler.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a multi-stage cooling device for a drum slag cooler, including an outer drum, an inner drum installed on the inner wall of the outer drum, a left drum cover installed on the left side of the outer drum, a right drum cover installed on the right side of the outer drum, a discharge port at the lower end of the right drum cover, an air-cooling connector installed on the surface of the left drum cover, the air-cooling connector communicating with the gap between the outer drum and the inner drum, a cooling assembly installed inside the right drum cover, the cooling assembly including a rotary joint, the rotary joint being fixedly connected to the inner wall of the right drum cover, a water inlet pipe being fixedly connected to the output end of the rotary joint, a cooling pipe being fixedly connected to the output end of the water inlet pipe, a water outlet pipe being fixedly connected to the output end of the cooling pipe, the output end of the water outlet pipe being fixedly connected to the rotary joint, and heat dissipation fins being fixedly connected to the surface of the cooling pipe, the heat dissipation fins contacting the outer circumference of the inner drum.

[0007] Preferably, the inlet pipe and the outlet pipe are both threaded with sealing plugs at the ends near the left cylinder cover. The sealing plugs can seal the ends of the inlet pipe and the outlet pipe to ensure that the cooling medium always flows in the pipes.

[0008] Preferably, the water inlet pipe is connected to the water inlet of the rotary joint, the surface of the water inlet pipe is covered with heat insulation cotton, and the water inlet pipe is located in the gap between the outer roller and the inner roller. The water source pumped by the rotary joint can be injected into multiple cooling pipes through the water inlet pipe, thereby ensuring the continuous flow of cooling medium in the cooling pipes.

[0009] Preferably, the cooling pipe is in contact with the outer circumference of the inner roller, the water outlet pipe is connected to the water outlet of the rotary joint, and the water outlet pipe is located in the gap between the outer roller and the inner roller. Through the cooperation of the cooling pipe and the heat dissipation fins, the heat on the surface of the inner roller can be stably carried away under the action of the cooling medium.

[0010] Preferably, the surface of the water inlet end of the rotary joint is provided with an auxiliary component, which includes a connecting flange. The connecting flange is installed on the upper surface of the rotary joint, and a filter screen is fixedly connected to the inner wall of the connecting flange. A collection chamber is fixedly connected to the outer circumference of the connecting flange, and a sealing cover is installed on the upper surface of the collection chamber. A sealing ring is fixedly connected to the inner wall of the sealing cover, and a circular hole is opened on the surface of the sealing cover. A fastening bolt is inserted into the inner wall of the circular hole on the sealing cover. A threaded hole is opened on the surface of the collection chamber, and the fastening bolt is threadedly connected to the inner wall of the threaded hole. The filter screen can filter the cooling medium passing through the connecting flange to a certain extent, thereby reducing the problem of impurities in the cooling medium entering the cooling pipe and causing blockage of the cooling pipe.

[0011] Preferably, the connecting flange is connected to the water inlet of the rotary joint, the filter screen is installed at an angle, and the bottom end of the filter screen is flush with the lower inner wall of the collection chamber. The collection chamber can collect the impurities filtered by the filter screen, thereby reducing the accumulation of impurities on the surface of the filter screen and preventing interference with the flow effect of the filter screen.

[0012] Preferably, the sealing ring is in contact with the inner wall of the collection chamber, which can increase the sealing effect between the sealing cover and the collection chamber and improve the sealing performance of the collection chamber.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, by setting up cooling components, the pipelines for conveying the cooling medium are distributed in multiple stages, ensuring that the cooling medium is quickly discharged after one loop, reducing the repetition of the cooling medium's circulation path, which would reduce the cooling effect of the cooling medium in the rear area and cause uneven cooling of the equipment, and further improving the cooling effect and uniformity of the cooling device.

[0015] 2. In this utility model, by setting auxiliary components, the equipment can filter some of the impurities contained in the cooling medium during operation, so as to avoid the problem of impurities entering the cooling components and causing pipe blockage, and further improve the stability of the equipment in operation. Attached Figure Description

[0016] Figure 1 This utility model presents a three-dimensional structural diagram of a multi-stage cooling device for a drum slag cooler;

[0017] Figure 2 This utility model provides a side view of the multi-stage cooling device for a drum slag cooler.

[0018] Figure 3 This utility model provides a schematic diagram of the internal structure of a multi-stage cooling device for a drum slag cooler;

[0019] Figure 4 This utility model presents a partial structural schematic diagram of a multi-stage cooling device for a drum slag cooler;

[0020] Figure 5 This utility model provides a schematic diagram of the cooling component structure of a multi-stage cooling device for a drum slag cooler;

[0021] Figure 6 This utility model presents a schematic diagram of the auxiliary components of a multi-stage cooling device for a drum slag cooler.

[0022] Legend:

[0023] 1. Outer roller; 2. Inner roller; 3. Left cylinder cover; 4. Right cylinder cover; 5. Air-cooled connector; 6. Cooling assembly; 61. Rotary joint; 62. Water inlet pipe; 63. Cooling pipe; 64. Water outlet pipe; 65. Heat dissipation fins; 66. Sealing plug; 7. Auxiliary assembly; 71. Connecting flange; 72. Filter screen; 73. Collection chamber; 74. Sealing cover; 75. Sealing ring; 76. Fastening bolt. Detailed Implementation

[0024] Please see Figures 1-6 This utility model provides a technical solution: a multi-stage cooling device for a drum slag cooler, including an outer drum 1, an inner drum 2 installed on the inner wall of the outer drum 1, a left drum cover 3 installed on the left side of the outer drum 1, a right drum cover 4 installed on the right side of the outer drum 1, a discharge port opened at the lower end of the right drum cover 4, an air-cooling connector 5 installed on the surface of the left drum cover 3, the air-cooling connector 5 being connected to the gap between the outer drum 1 and the inner drum 2, a cooling component 6 installed inside the right drum cover 4, and an auxiliary component 7 provided on the surface of the water inlet end of the rotary connector 61.

[0025] The specific settings and functions of its cooling component 6 and auxiliary component 7 will be discussed below.

[0026] In this embodiment: the cooling assembly 6 includes a rotary joint 61, which is fixedly connected to the inner wall of the right cylinder cover 4. The output end of the rotary joint 61 is fixedly connected to a water inlet pipe 62, the output end of the water inlet pipe 62 is fixedly connected to a cooling pipe 63, the output end of the cooling pipe 63 is fixedly connected to a water outlet pipe 64, the output end of the water outlet pipe 64 is fixedly connected to the rotary joint 61, and the surface of the cooling pipe 63 is fixedly connected to a heat dissipation fin 65, which is in contact with the outer circumference of the inner roller 2.

[0027] Specifically, both the inlet pipe 62 and the outlet pipe 64 are threaded with sealing plugs 66 at the ends near the left cylinder cover 3. The sealing plugs 66 can seal the ends of the inlet pipe 62 and the outlet pipe 64 to ensure that the cooling medium always flows in the pipes.

[0028] Specifically, the water inlet pipe 62 is connected to the water inlet of the rotary joint 61, the surface of the water inlet pipe 62 is covered with heat insulation cotton, and the water inlet pipe 62 is located in the gap between the outer roller 1 and the inner roller 2.

[0029] In this embodiment, the water pumped by the rotary joint 61 can be injected into multiple cooling pipes 63 through the water inlet pipe 62, thereby ensuring the continuous flow of cooling medium in the cooling pipes 63.

[0030] Specifically, the cooling pipe 63 is in contact with the outer circumference of the inner roller 2, and the water outlet pipe 64 is connected to the water outlet of the rotary joint 61. The water outlet pipe 64 is located in the gap between the outer roller 1 and the inner roller 2. Through the cooperation of the cooling pipe 63 and the heat dissipation fins 65, the heat on the surface of the inner roller 2 can be stably carried away under the action of the cooling medium.

[0031] In this embodiment: the auxiliary component 7 includes a connecting flange 71, which is installed on the upper surface of the rotary joint 61. A filter screen 72 is fixedly connected to the inner wall of the connecting flange 71, and a collection chamber 73 is fixedly connected to the outer circumference of the connecting flange 71. A sealing cover 74 is installed on the upper surface of the collection chamber 73, and a sealing ring 75 is fixedly connected to the inner wall of the sealing cover 74. A circular hole is opened on the surface of the sealing cover 74, and a fastening bolt 76 is inserted into the inner wall of the circular hole. A threaded hole is opened on the surface of the collection chamber 73, and the fastening bolt 76 is threadedly connected to the inner wall of the threaded hole.

[0032] In this embodiment, the cooling medium passing through the connecting flange 71 can be filtered to a certain extent by the filter screen 72, thereby reducing the problem of impurities in the cooling medium entering the cooling pipe 63 and causing blockage of the cooling pipe 63.

[0033] Specifically, the connecting flange 71 is connected to the water inlet of the rotary joint 61, the filter screen 72 is installed at an angle, and the bottom end of the filter screen 72 is flush with the lower inner wall of the collection chamber 73. The collection chamber 73 can collect the impurities filtered by the filter screen 72, thereby reducing the accumulation of impurities on the surface of the filter screen 72 and preventing interference with the flow effect of the filter screen 72.

[0034] Specifically, the sealing ring 75 is in contact with the inner wall of the collection chamber 73.

[0035] In this embodiment, the sealing effect between the sealing cover 74 and the collection chamber 73 can be increased by the sealing ring 75, thereby improving the sealing performance of the collection chamber 73.

[0036] Working principle: Before using the equipment, install the bracket for fixing the cylinder at the designated work position. After the bracket is installed, install the outer cylinder onto the bracket and install the drive mechanism at the middle position on the surface of the outer cylinder. After completing the above assembly operation, install the feeding structure on the material port of the left cylinder cover 3, and at the same time install the output pipe of the air-cooling mechanism on the air-cooling connector 5. Then install the pumping mechanism and the drain pipe on the outlet of the connecting flange 71 and the rotary joint 61 respectively. After the overall assembly is completed, the drive mechanism drives the outer drum 1 to rotate. With the cooperation of the inner drum 2, the outer drum 1 conveys slag to the discharge port. At the same time, the air-cooling mechanism and the pumping mechanism work synchronously, and cooperate with the cooling component 6 and the auxiliary component 7 to cool down the slag discharged into the inner drum 2. The cooled slag is discharged through the discharge port.

[0037] When the pumping mechanism is working, it pumps the cooling medium into the inlet of the rotating structure. The rotary joint 61 sends the cooling medium into the inlet pipe 62, and the inlet pipe 62 sends the cooling medium into the cooling pipe 63. Then, the cooling pipe 63, together with the flowing cooling medium, the heat dissipation fins 65 and the cold air delivered by the air-cooling mechanism, cools the slag in the inner drum 2. After entering the cooling pipe 63, the cooling medium is discharged into the outlet pipe 64 through the outlet cup of the cooling pipe 63. The outlet pipe 64, together with the outlet of the rotary joint 61, discharges the cooling medium with heat. By setting the cooling component 6, the pipeline for conveying the cooling medium is distributed in multiple stages, ensuring that the cooling medium is quickly discharged after one revolution. This reduces the repetition of the cooling medium's circulation path, which would reduce the cooling effect of the cooling medium in the rear area and cause uneven cooling of the equipment. This further improves the cooling effect and uniformity of the cooling device.

[0038] Additionally, when the cooling medium passes through the connecting flange 71, the filter screen 72 located inside the connecting flange 71 filters the cooling medium. The filtered impurities flow into the collection chamber 73 through the inclined filter screen 72 and the flushing effect of the cooling medium. The collection chamber 73 collects the impurities that enter it. When the user needs to clean the impurities, the fastening bolts 76 are rotated counterclockwise. After all the fastening bolts 76 are removed, the sealing cover 74 can be opened to clean the impurities in the collection chamber 73. By setting the auxiliary component 7, the equipment can filter some of the impurities contained in the cooling medium during operation, avoiding the problem of impurities entering the cooling component 6 and causing pipe blockage, and further improving the stability of the equipment during operation.

Claims

1. A multi-stage cooling device for a drum slag cooler, comprising an outer drum (1), characterized in that: The inner wall of the outer roller (1) is fitted with an inner roller (2), a left cylinder cover (3) is fitted on the left side of the outer roller (1), and a right cylinder cover (4) is fitted on the right side of the outer roller (1). The lower end of the right cylinder cover (4) is provided with a discharge port. A cooling connector (5) is fitted on the surface of the left cylinder cover (3). The cooling connector (5) is connected to the gap between the outer roller (1) and the inner roller (2). A cooling assembly (6) is fitted inside the right cylinder cover (4). The cooling assembly (6) includes a rotary joint (61), which is fixedly connected to the inner wall of the right cylinder cover (4). The output end of the rotary joint (61) is fixedly connected to a water inlet pipe (62), the output end of the water inlet pipe (62) is fixedly connected to a cooling pipe (63), the output end of the cooling pipe (63) is fixedly connected to a water outlet pipe (64), the output end of the water outlet pipe (64) is fixedly connected to the rotary joint (61), the surface of the cooling pipe (63) is fixedly connected to a heat dissipation fin (65), the heat dissipation fin (65) is in contact with the outer circumference of the inner roller (2), and the ends of the water inlet pipe (62) and the water outlet pipe (64) near the left cylinder cover (3) are both threaded with a sealing plug (66).

2. The multi-stage cooling device for the drum slag cooler according to claim 1, characterized in that: The water inlet pipe (62) is connected to the water inlet of the rotary joint (61). The surface of the water inlet pipe (62) is covered with heat insulation cotton. The water inlet pipe (62) is located in the gap between the outer roller (1) and the inner roller (2).

3. The multi-stage cooling device for the drum slag cooler according to claim 1, characterized in that: The cooling pipe (63) is in contact with the outer circumference of the inner roller (2), the water outlet pipe (64) is connected to the water outlet of the rotary joint (61), and the water outlet pipe (64) is located in the gap between the outer roller (1) and the inner roller (2).

4. The multi-stage cooling device for the drum slag cooler according to claim 1, characterized in that: An auxiliary component (7) is provided on the surface of the water inlet end of the rotary joint (61). The auxiliary component (7) includes a connecting flange (71). The connecting flange (71) is installed on the upper surface of the rotary joint (61). A filter screen (72) is fixedly connected to the inner wall of the connecting flange (71). A collection chamber (73) is fixedly connected to the outer circumference of the connecting flange (71). A sealing cover (74) is installed on the upper surface of the collection chamber (73). A sealing ring (75) is fixedly connected to the inner wall of the sealing cover (74). A circular hole is opened on the surface of the sealing cover (74). A fastening bolt (76) is inserted into the inner wall of the circular hole of the sealing cover (74). A threaded hole is opened on the surface of the collection chamber (73). The fastening bolt (76) is threadedly connected to the inner wall of the threaded hole.

5. The multi-stage cooling device for the drum slag cooler according to claim 4, characterized in that: The connecting flange (71) is connected to the inlet of the rotary joint (61), the filter screen (72) is installed at an angle, and the bottom end of the filter screen (72) is flush with the lower inner wall of the collection chamber (73).

6. The multi-stage cooling device for the drum slag cooler according to claim 4, characterized in that: The sealing ring (75) is in contact with the inner wall of the collection chamber (73).

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