Rotary drum slag cooler with multi-layer drum structure

Abstract

The utility model discloses a drum slag cooler with a multi-layer drum structure. The slag cooler comprises a drum body assembly, a conveying mechanism and a cooling assembly, the barrel assembly comprises N layers of barrels which are arranged layer by layer from inside to outside, a conveying channel is formed between every two adjacent barrels, the end, away from the feeding port, of the (2j-1) th barrel and the end, away from the discharging port, of the (2j) th barrel are each provided with a conveying port, the conveying port of the (2j-1) th barrel and the closed end of the (2j) th barrel are oppositely arranged, and a feeding gap is formed between the conveying port of the (2j-1) th barrel and the closed end of the (2j) th barrel. The conveying port of the 2j barrel and the closed end of the (2j + 1) barrel are oppositely arranged and form a feeding gap, so that the adjacent conveying channels are sequentially communicated end to end to form a roundabout flowing channel, N is larger than or equal to 2, and N is larger than j and larger than or equal to 1; the conveying mechanism is used for conveying materials to move in the roundabout conveying channel; the cooling assembly is arranged on the barrel and can be communicated with the cooling medium. According to the utility model, a new solution is provided for waste heat utilization of high-temperature slag, and the comprehensive utilization efficiency of energy is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of equipment for utilizing waste heat from bottom ash in circulating fluidized bed boilers, and more specifically, to a multi-layer cylindrical drum ash cooler. Background Technology

[0002] The temperature of the slag discharged from the bottom of the furnace in a circulating fluidized bed boiler is between 850℃ and 950℃. Direct discharge or entry into the slag removal system would endanger personal safety and also hinder the safe operation of the slag removal system and equipment. Initially, my country commonly used imported water-air combined slag coolers installed in boiler plants, which, as the name suggests, combined water and air cooling. These coolers were prone to clogging and poor slag discharge, severely restricting the normal operation of the unit. Many circulating fluidized bed boilers put into operation in my country in recent years used water-air combined slag coolers, which, after being modified with drum slag coolers, are now operating well and have eliminated the need for energy-intensive cooling fans.

[0003] There are many types of slag coolers used in power plants today. In addition to combined air-water slag coolers, there are also drum slag coolers commonly used in circulating fluidized bed boilers. The drum slag cooler originally evolved from the "water-cooled auger," which has a hollow shaft with helical blades inside a closed shell. Cooling water flows through the shaft and blades. The hot slag discharged from the boiler drives the rotation of the helical blades through the hollow shaft, propelling the ash and slag. During the propulsion process, the heat released by the hot slag is transferred to the water, thereby achieving the purpose of cooling the ash and slag.

[0004] However, existing drum slag coolers use water-cooled surface heat exchangers, which result in a low heat transfer coefficient and a large cooler volume. Therefore, a new technical solution is needed to address these problems. Utility Model Content

[0005] One objective of this utility model application is to provide a new technical solution for a multi-layer cylindrical drum slag cooler.

[0006] According to a first aspect of this utility model application, a multi-layer cylindrical drum slag cooler is provided; the multi-layer cylindrical drum slag cooler includes a cylinder assembly, a conveying mechanism, and a cooling assembly; the cylinder assembly includes N layers of cylinders arranged layer by layer from the inside to the outside, with a conveying channel formed between adjacent cylinders; the first cylinder from the inside to the outside has a feed inlet, the Nth cylinder has a discharge outlet, and the end of the 2j-1th cylinder opposite to the feed inlet and the end of the 2jth cylinder opposite to the discharge outlet both have conveying ports, the... The conveying ports of the 2j-1 cylinders are arranged opposite to the closed end of the 2j cylinder and form a feeding gap. The conveying ports of the 2j cylinders are arranged opposite to the closed end of the 2j+1 cylinders and form a feeding gap, so that the adjacent conveying channels are connected end to end to form a meandering flow channel, wherein N≥2 and N>j≥1. The conveying mechanism is used to convey materials to move within the meandering conveying channel. The cooling component is disposed in the cylinder and is in communication with the cooling medium.

[0007] Optionally, the conveying mechanism consists of blades disposed on the cylinder, with the blades of adjacent layers of the cylinder rotating in opposite directions. The conveying mechanism also includes a drive device for driving the cylinder to rotate.

[0008] Optionally, the N cylinders are of a split structure, and the driving device drives the N cylinders respectively through M driving components, where M = N; or, the N cylinders are fixedly connected, and the driving device drives the N cylinders to rotate through one of the driving components.

[0009] Optionally, the conveying mechanism further includes lifting plates disposed on the cylinder.

[0010] Optionally, the cylinder is provided with a vibrating element and a detection element, and the detection element is signal-connected to the vibrating element.

[0011] Optionally, the feed inlet is provided with a baffle to control the feed speed of the feed inlet, and the baffle is rotated or moved by the detection element.

[0012] Optionally, the cooling assembly includes a cooling channel arranged in the cylinder, the cooling channel being arranged along the circumferential direction of the cylinder, and the cooling channel having an inlet and an outlet.

[0013] Optionally, the multi-layer cylindrical drum slag cooler further includes a housing, which is fitted onto the conveying mechanism. The housing has a first opening and a second opening, the first opening corresponding to the position of the feed inlet and the second opening corresponding to the position of the discharge outlet.

[0014] Optionally, the housing includes a first housing and a second housing, which are detachably connected.

[0015] In this embodiment of the utility model application, multiple cylinders are nested layer by layer to form a conveying channel between adjacent cylinders, and the multiple conveying channels are connected end to end to form a flow channel for conveying the material to be cooled. This extends the flow path of the material to be cooled within the cylinder assembly, increases the contact time between the material to be cooled within the conveying channel and the cooling components on the cylinder, and effectively improves the cooling effect of the material in the drum slag cooler. The conveying mechanism not only assists in conveying the material from the inlet to the outlet, but also effectively reduces the possibility of material accumulation and blockage within the conveying channel. By setting the cooling components, the material can fully contact the cooling components during its movement within the conveying channel, thereby improving the cooling efficiency.

[0016] Other features and advantages of this utility model application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of the drum slag cooler in the embodiments of this utility model application;

[0019] Figure 2 This is a structural schematic diagram of the multiple output parts in the embodiment of this utility model application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Cylinder assembly; 11-Cylinder; 12-Conveying channel; 13-Blade; 14-Transfer inlet; 15-Feeding gap;

[0022] 2-Inlet;

[0023] 3-Discharge port;

[0024] 4-Outer shell; 41-First opening; 42-Second opening. Detailed Implementation

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application or its application or use.

[0027] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, they should be considered part of the specification.

[0028] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] According to one embodiment of this utility model application, a multi-layer cylindrical drum slag cooler is provided. The multi-layer cylindrical drum slag cooler includes a cylinder assembly 1, a conveying mechanism, and a cooling assembly. The cylinder assembly 1 includes N layers of cylinders 11 arranged sequentially from the inside out. A conveying channel 12 is formed between adjacent cylinders 11. The first cylinder 11 from the inside out has a feed inlet 2, the Nth cylinder 11 has a discharge outlet 3, and both the end of the (2j-1)th cylinder 11 opposite to the feed inlet 2 and the end of the (2j-1)th cylinder 11 opposite to the discharge outlet 3 have conveying ports 14. The conveying port 14 of the second j-th cylinder 11 is arranged opposite to the closed end of the second j-th cylinder 11 and forms a feeding gap 15. The conveying port 14 of the second j-th cylinder 11 is arranged opposite to the closed end of the second j+1-th cylinder 11 and forms a feeding gap 15, so that the adjacent conveying channels 12 are connected end to end in sequence to form a meandering flow channel, wherein N≥2, N>j≥1; the conveying mechanism is used to convey materials to move within the meandering conveying channel 12; the cooling component is arranged on the cylinder 11 and the cooling component can be in communication with the cooling medium.

[0031] like Figures 1 to 2 As shown, this drum slag cooler is used to cool high-temperature materials such as ash and slag. The material to be cooled is fed into the conveying mechanism through the feed inlet 2. During the output process of the conveying mechanism, the material to be cooled is cooled, so that the temperature of the material discharged from the conveying mechanism is reduced, so that it can be processed later.

[0032] Of course, the conveying mechanism in the embodiments of this utility model application is not limited to the above structure, and those skilled in the art can make settings according to actual needs.

[0033] like Figures 1 to 2As shown, the cylinder 11 is cylindrical. Multiple cylinders 11 are nested from the inside out, forming a conveying channel 12 between adjacent cylinders 11 for the flow of the material to be cooled. By setting multiple cylinders 11 nested together, the flow path of the material to be cooled within the conveying mechanism is extended, allowing sufficient time for the material to be cooled within the conveying mechanism.

[0034] Multiple cylinders 11 are nested layer by layer, with their diameters gradually increasing from the inside to the outside, and conveying channels 12 are formed between adjacent cylinders 11. The innermost cylinder 11 is the first cylinder 11, and the outermost cylinder 11 is the Nth cylinder 11. The first cylinder 11 has a feed inlet 2, through which the material to be cooled is fed into the conveying mechanism. The material to be cooled starts flowing from the innermost first cylinder 11 and flows through multiple cylinders 11 in sequence, and is discharged from the conveying mechanism through the discharge outlet 3 of the outermost Nth cylinder 11. The material to be cooled is cooled during the flow process.

[0035] N represents the number of cylinders 11. 2j indicates that the number of cylinders 11 is even, for example, the second cylinder 11 in a layered cylinder assembly 1. 2j-1 and 2j+1 indicate that the number of cylinders 11 is odd, for example, the first cylinder 11 and the third cylinder 11 in a layered cylinder assembly 1.

[0036] For example, such as Figures 1 to 2 As shown, there are three cylinders 11. From the inside out, the cylinders 11 are the first cylinder layer (2j-1), the second cylinder layer (2j), and the third cylinder layer (2j+1). The feed inlet 2 and the discharge outlet 3 are respectively located at opposite ends of the cylinders 11. The first cylinder layer has a feed inlet 2 at one end, and the third cylinder layer has a discharge outlet 3 at the end away from the feed inlet 2.

[0037] Both the end of the 2j-1 cylinder 11 facing away from the feed inlet 2 and the end of the 2j cylinder 11 facing away from the discharge outlet 3 are provided with a conveying port 14. That is, the side of the first cylinder layer away from the feed inlet 2 has a conveying port 14, and the side of the second cylinder layer away from the discharge outlet 3 has a conveying port 14. By setting the conveying ports 14, materials can enter the conveying channel 12 formed between the outer wall of the first cylinder layer and the second cylinder layer from the first cylinder layer, and materials can enter the conveying channel 12 formed between the outer wall of the second cylinder layer and the third cylinder layer through the conveying ports 14 of the second cylinder layer.

[0038] The conveying port 14 of the 2j-1th cylinder 11 is positioned opposite to the closed end of the 2jth cylinder 11, forming a feeding gap 15. That is, for example, a feeding gap 15 is formed between the conveying port 14 of the first cylinder layer and the closed end of the second cylinder layer, so that the material to be cooled is conveyed to the second cylinder layer through the feeding gap 15, so that the material to be cooled can flow along the conveying channel 12 and be discharged from the second cylinder layer.

[0039] The conveying port 14 of the 2jth cylinder 11 is positioned opposite to the closed end of the 2j+1th cylinder 11, forming a feeding gap 15. That is, for example, a feeding gap 15 is formed between the conveying port 14 of the second cylinder layer and the closed end of the third cylinder layer, so that the material to be cooled is conveyed to the third cylinder layer through the feeding gap 15, so that the material to be cooled can flow along the conveying channel 12 and be discharged from the cylinder assembly 1.

[0040] like Figures 1 to 2 As shown, by sequentially connecting the feed inlet 2, the feeding gap 15 of the 2j-1, the transfer port 14 of the 2j-1, the feeding gap 15 of the 2j, the transfer port 14 of the 2j, the feeding gap 15 of the 2j+1, and the discharge port 3 to form a meandering flow channel, the material to be cooled enters the flow channel through the feed inlet 2 and is cooled during the flow process. Finally, the cooled material is discharged through the discharge port 3, thus completing the cooling of the material at high temperature.

[0041] N represents the number of cylinders (11), and the number of cylinders (11) must be at least two. 2j indicates that the number of cylinders (11) is even, and 2j-1 and 2j+1 indicate that the number of cylinders (11) is odd. Figures 1 to 2 As shown, 2j-1 is the first cylindrical layer, 2j is the second cylindrical layer, 2j+1 is the third cylindrical layer, and so on.

[0042] When the number of cylinders 11 is odd, for example, when the number of cylinders 11 is five, the inlet 2 and the outlet 3 are located on opposite sides of the cylinder assembly 1. When the number of cylinders 11 is even, for example, when the number of cylinders 11 is eight, the inlet 2 and the outlet 3 are located on the same side of the cylinder assembly 1.

[0043] Of course, the number of cylinders 11 in the embodiments of this utility model application is not limited to the above-mentioned number, and those skilled in the art can set it according to actual needs. For example, the number of cylinders 11 can also be six, seven, etc.

[0044] The conveying mechanism can be a push rod, or a component such as a spiral blade 13 that assists in the movement of materials within the conveying channel 12.

[0045] The cooling component is installed on the cylinder 11. The cooling component enables the material to be cooled to cool faster as it flows in the conveying channel 12, thereby improving the cooling efficiency.

[0046] The cooling components can be heat sinks or cooling pipes connected to the cooling medium, etc., installed on the cylinder 11.

[0047] In this embodiment of the utility model application, multiple cylinders 11 are nested layer by layer to form a conveying channel 12 between adjacent cylinders 11, and the multiple conveying channels 12 are connected end to end to form a flow channel for conveying the material to be cooled. This extends the flow path of the material to be cooled in the cylinder assembly 1, increases the contact time between the material to be cooled in the conveying channel 12 and the cooling components on the cylinder 11, and effectively improves the cooling effect of the material in the drum slag cooler. The conveying mechanism not only assists in conveying the material from the inlet 2 to the outlet 3, but also effectively reduces the possibility of material accumulation and blockage in the conveying channel 12. By setting the cooling components, the material can fully contact the cooling components during the movement in the conveying channel 12, thereby improving the cooling efficiency.

[0048] In one example, the conveying mechanism is a blade 13 disposed on the cylinder 11, and the blades 13 of adjacent layers of the cylinder 11 rotate in opposite directions. The conveying mechanism also includes a drive device for driving the cylinder 11 to rotate.

[0049] like Figures 1 to 2 As shown, multiple cylinders 11 are nested layer by layer, and there is a conveying channel 12 between adjacent cylinders 11. Blades 13 are installed in the conveying channel 12, which not only guide the material during the conveying process, allowing the material to move from the inlet 2 to the outlet 3, but also stir and mix the material during the conveying process, so that the material is fully mixed during the conveying process and effectively improves the cooling efficiency of the material.

[0050] The blades 13 on adjacent cylinders 11 rotate in opposite directions; that is, the blades 13 in adjacent conveying channels 12 rotate in opposite directions. For example... Figures 1 to 2 As shown, multiple cylinders 11 are nested layer by layer, with adjacent conveying channels 12 connected end to end, forming a meandering flow channel. The material to be cooled moves from the inlet 2 to the outlet 3 along the meandering flow channel. When the material moves to the connection point of the adjacent conveying channel 12, i.e., the conveying port 14 and the feeding gap 15, it will enter the outer conveying channel adjacent to the conveying channel 12 under the action of gravity, thereby changing the flow direction and flowing along the meandering flow channel. By setting blades 13 with opposite rotation directions in the adjacent conveying channels 12, the material is assisted to flow along the conveying direction of the conveying channel 12. By setting blades 13, not only can the material conveying be guided to prevent the material from slowing down and causing blockages at the connection point of the adjacent conveying channels 12, but the material can also be stirred and mixed by the blades 13 when moving in the conveying channel 12, so that the material can be fully mixed and in contact with the cooling components, thereby improving the cooling speed of the material.

[0051] The conveying mechanism also includes a drive unit. The drive unit drives the cylinder 11 to rotate, and the blades 13 are fixedly mounted on the cylinder 11. During the rotation of the cylinder 11, the blades 13 push the material to move within the conveying channel 12, so as to push the material to the discharge port 3 while mixing it.

[0052] Alternatively, the blade 13 is disposed inside the cylinder 11. When the cylinder 11 is fixed, the blade 13 is driven to rotate by a drive device. The blade 13 enables the material to move from the feed port 2 to the discharge port 3 along the conveying channel 12 inside the cylinder 11.

[0053] Of course, the conveying mechanism in the embodiments of this utility model application is not limited to the above structure, and those skilled in the art can set it according to actual needs. For example, the conveying mechanism can also be a push rod, which is set in the feeding gap 15. The push rod pushes the material along the conveying direction of the feeding gap 15, so that the material can move to the discharge port 3.

[0054] In one example, the N cylinders are of a split structure, and the driving device drives the N cylinders 11 respectively through M driving components, where M = N; or, the N cylinders 11 are fixedly connected, and the N cylinders 11 are driven to rotate by one driving component.

[0055] In the embodiments of this utility model application, the driving device is a rotary driving device that drives the cylinder 11 to rotate, such as a rotary motor.

[0056] When the cylinder assembly 1 is an integral structure, that is, when the N cylinders 11 nested in layers are fixedly connected to form an integral unit, the drive device can drive one of the cylinders 11 to rotate, thereby driving the N cylinders 11 nested in layers to rotate synchronously, so that the material to be cooled moves in the conveying channel 12 of the cylinder assembly 1.

[0057] When the N cylinders 11 of the cylinder assembly 1 are nested layer by layer but not fixedly connected, the M driving components of the driving device can be connected to the cylinders 11 respectively. By driving the M driving components simultaneously, the N cylinders 11 can rotate synchronously, so that the material can move in the conveying channel 12 of the cylinder assembly 1.

[0058] In the above, M represents the number of driving components, and N represents the number of cylinders. When N cylinders are connected as a single unit, a driving component connected to one of the cylinders can drive all N cylinders to rotate synchronously. When N cylinders are nested layer by layer but not fixedly connected, each cylinder can rotate independently. In this case, each cylinder needs to be connected to a driving component, i.e., N cylinders are connected to M driving components, with the number of cylinders matching the number of driving components, N = M. The driving device can make the N cylinders rotate synchronously by driving M driving components.

[0059] In one example, the conveying mechanism further includes a lifting plate disposed on the cylinder 11.

[0060] like Figures 1 to 2 As shown, the cylinder 11 is a horizontal cylindrical structure, with multiple lifting plates evenly distributed along the circumference of the cylinder 11. When the material moves to the conveying port 14 at the junction of adjacent conveying channels 12, it needs to change its flow direction to flow along a meandering flow channel. By arranging multiple lifting plates in the circumference of the cylinder 11, it can not only assist the material to be cooled to flow along the conveying direction of the conveying channel 12, playing a guiding and unblocking role, and preventing the material from slowing down and causing blockages at the junction of adjacent conveying channels 12, but also fully mix the material to be cooled in the feeding gap 15 through the lifting plates, so that the material to be cooled can fully contact the cooling components and improve the cooling speed.

[0061] It should be noted that the aforementioned lifting plates can be rectangular plates, with one side connected to the inner wall of the cylinder. The side of the rectangular plate away from the inner wall of the cylinder has a bent portion. This bent portion allows the material to move close to the inner wall of the cylinder during its movement within the conveying channel, ensuring sufficient contact between the material and the cooling components on the cylinder, thus improving the cooling efficiency. Multiple lifting plates are evenly distributed along the circumferential direction of the cylinder. This utility model application does not limit the specific structure of the aforementioned lifting plates; any structural type that meets the usage requirements is acceptable.

[0062] In one example, the cylinder 11 is provided with a vibrating element and a detection element, and the detection element is signal-connected to the vibrating element.

[0063] In this embodiment of the utility model application, a vibrating element and a detection element are installed inside the cylinder 11. The detection element can be a temperature detector or a flow detector, etc. The detection element detects the material temperature and / or flow rate at the outlet. When the detection value obtained by the detection element is equal to or greater than a set value, the signal is fed back to the vibrating element, which then activates to clear the material in the conveying channel 12.

[0064] For example, when the amount of material to be cooled in the cylinder assembly 1 increases, causing blockage in the conveying channel 12, the detection element detects that the material temperature at the outlet 3 is equal to or greater than the set value. The vibrating component can be activated to make the material in the conveying channel 12 vibrate and mix, clearing the blockage and facilitating the discharge of the material. This reduces the need to open the cylinder assembly 1 for unblocking, maintenance, and other operations, improves cooling efficiency, and reduces operational difficulty.

[0065] In one example, the feed inlet 2 is provided with a baffle to control the feeding speed of the feed inlet 2, and the baffle is controlled to rotate or move by the detection element.

[0066] In this embodiment of the utility model application, a baffle is provided at the feed inlet 2, which can be used to adjust the feeding speed of the feed inlet 2. The baffle is rotated or moved by a detection element to adjust the feeding speed and prevent the blockage from becoming more serious.

[0067] For example, when the detection element is a temperature detection element, the temperature detection element is set at the discharge port 3 of the cylinder assembly 1. The temperature of the discharged material is detected by the temperature detection element. When the detected temperature is equal to or greater than the set value, the flow rate of the feed port 2 needs to be reduced, or the flow rate and velocity of the cooling medium of the cooling assembly need to be increased, so as to improve the cooling efficiency of the material.

[0068] Of course, the detection element in the embodiments of this utility model application is not limited to the above functions, and those skilled in the art can set it according to actual needs. For example, the detection element can also be a flow detector, which detects the material flow rate at the outlet 3 to adjust the opening of the baffle and achieve effective cooling of the material.

[0069] In one example, the cooling assembly includes a cooling channel disposed in the cylinder 11 along the circumferential direction of the cylinder 11, and the cooling channel has a liquid inlet and a liquid outlet.

[0070] In this embodiment of the utility model application, the cooling component is a cooling channel arranged in the cylinder 11. The cooling channel is arranged along the circumferential direction of the cylinder 11. For example, the cylinder 11 has a cylindrical structure, and the cooling channel is arranged in a surrounding structure in the cylinder 11. The flow direction of the cooling medium in the cooling channel is the same as the conveying direction of the material in the conveying channel 12, so as to prolong the contact time between the material to be cooled and the cooling medium in the cooling channel and improve the cooling efficiency.

[0071] The cooling channel has an inlet and an outlet. Cooling medium is injected through the inlet, allowing it to flow within the cooling channel and then discharged through the outlet, thus cooling and circulating the cooling medium.

[0072] In one example, the multi-layer cylindrical drum slag cooler further includes a housing 4, which is fitted onto the conveying mechanism. The housing 4 has a first opening 41 and a second opening 42, the first opening 41 corresponding to the position of the feed inlet 2, and the second opening 42 corresponding to the position of the discharge outlet 3.

[0073] like Figures 1 to 2 The conveying mechanism is fitted with an outer shell 4. The outer shell 4 is a horizontal cylindrical structure. By fitting the outer shell 4 onto the outside of the conveying mechanism, damage to people, objects, and / or other equipment during the rotation of the conveying unit can be prevented, thus providing a certain degree of protection.

[0074] The first opening 41 and the second opening 42 are made on the outer casing 4 to facilitate the feeding and output of the material to be cooled.

[0075] Of course, the outer casing 4 in the embodiments of this utility model application is not limited to the above structure, and those skilled in the art can make it according to actual needs. For example, the outer casing 4 can also be a cuboid structure. By setting the outer casing 4 to a cuboid structure, it is easier to place the drum slag cooler, improve the stability of the drum slag cooler, and prevent the drum slag cooler from shaking during use, which could cause damage to the equipment.

[0076] In one example, the housing 4 includes a first housing and a second housing, which are detachably connected.

[0077] In this embodiment of the utility model application, the outer shell 4 includes a first shell and a second shell, which can be detachably connected by means of screws, snap-fits, interference fits, etc. By making the first shell and the second shell detachably connected, it is convenient to inspect, maintain, and replace parts of components such as the conveying mechanism and cooling components.

[0078] According to another embodiment of this utility model application, a heat exchange method for a multi-layer cylindrical drum slag cooler is provided. The multi-layer cylindrical drum slag cooler described above is used. The heat exchange method forms a flow channel that is progressively interconnected in the radial direction of the cylinder 11 by sequentially nesting N layers of cylinder 11. The conveying mechanism conveys the material from the inlet 2 to the outlet 3 in the progressively interconnected flow channel, and the cooling components on the cylinder 11 cool the material during the movement.

[0079] like Figures 1 to 2 As shown, the material to be cooled is fed into the innermost cylinder 11 through the feed inlet 2. The material to be cooled is moved by the conveying mechanism along the feeding gap 15 of the cylinder 11 to the transfer port 14 at the end of the cylinder 11 away from the feed inlet 2, and enters the feeding gap 15 of the second cylinder 11. The material to be cooled in the second cylinder 11 is moved by the conveying mechanism along the feeding gap 15 of the cylinder 11 to the transfer port 14 of the second cylinder 11, and enters the feeding gap 15 of the third cylinder 11. The above steps are repeated until the material to be cooled enters the feeding gap 15 of the nth cylinder 11. The material is then pushed by the conveying mechanism to the discharge port 3 to be discharged.

[0080] As the material to be cooled moves within the flow channel, the cooling channels arranged on the cylinder 11 are connected to the cooling medium. The cooling medium flows along the cooling channels, causing the material to be cooled as it passes through the feeding gap 15 to come into contact with the cooling channels, thereby cooling the material and effectively increasing the cooling rate.

[0081] In one example, the cylinder 11 rotates, and based on the rotation of the cylinder 11, the spiral blades 13 on the cylinder 11 push the material through the meandering flow channel, and the material moves from the inlet 2 to the outlet 3.

[0082] In this embodiment of the utility model application, the cylinder 11 can be driven to rotate by a drive device or other equipment. The multi-layer cylinder 11 can be fixedly connected as one piece, or multiple cylinders 11 can be connected to the drive device respectively. By driving multiple cylinders 11 to rotate synchronously by the drive device, the blades 13 on the cylinder 11 can push the material from the feed port 2 to the discharge port 3. In addition, the blades 13 can also play a role in stirring the material, so that the material is fully mixed and the cooling speed is effectively accelerated.

[0083] While specific embodiments of this utility model application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this utility model application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this utility model application. The scope of this utility model application is defined by the appended claims.

Claims

1. A multi-layer cylindrical drum slag cooler, characterized in that, include: A cylindrical assembly (1) comprises N layers of cylindrical bodies (11) arranged layer by layer from the inside out. A conveying channel (12) is formed between adjacent cylindrical bodies (11). The first cylindrical body (11) from the inside out is provided with a feed inlet (2), the Nth cylindrical body (11) is provided with a discharge outlet (3), and the end of the 2j-1th cylindrical body (11) away from the feed inlet (2) and the end of the 2jth cylindrical body (11) away from the discharge outlet (3) are both provided with a conveying device. The material inlet (14) of the 2j-1th cylinder (11) is arranged opposite to the closed end of the 2jth cylinder (11) and forms a feeding gap (15). The material inlet (14) of the 2jth cylinder (11) is arranged opposite to the closed end of the 2j+1th cylinder (11) and forms a feeding gap (15), so that the adjacent conveying channels (12) are connected end to end in sequence to form a meandering flow channel, wherein N≥2, N>j≥1; A conveying mechanism for conveying materials to move within the meandering conveying channel (12); A cooling assembly is disposed in the cylinder (11), and the cooling assembly is in communication with the cooling medium.

2. The multi-layer cylindrical drum slag cooler according to claim 1, characterized in that, The conveying mechanism is a blade (13) disposed on the cylinder (11), and the blades (13) of adjacent layers of the cylinder (11) rotate in opposite directions. The conveying mechanism also includes a drive device for driving the cylinder (11) to rotate.

3. The multi-layer cylindrical drum slag cooler according to claim 2, characterized in that, The N cylinders are of a split structure, and the driving device drives the N cylinders (11) respectively through M driving components, where M = N; or, N cylinders (11) are fixedly connected, and the driving device drives the N cylinders (11) to rotate through a driving component.

4. The multi-layer cylindrical drum slag cooler according to claim 2, characterized in that, The conveying mechanism also includes a lifting plate disposed on the cylinder (11).

5. The multi-layer cylindrical drum slag cooler according to claim 2, characterized in that, The cylinder (11) is equipped with a vibrating element and a detection element, and the detection element is signal-connected to the vibrating element.

6. The multi-layer cylindrical drum slag cooler according to claim 5, characterized in that, The feed inlet (2) is equipped with a baffle to control the feed speed of the feed inlet (2), and the baffle is controlled to rotate or move by the detection element.

7. The multi-layer cylindrical drum slag cooler according to claim 1, characterized in that, The cooling assembly includes a cooling channel arranged in the cylinder (11) along the circumferential direction of the cylinder (11), and the cooling channel has an inlet and an outlet.

8. The multi-layer cylindrical drum slag cooler according to claim 1, characterized in that, It also includes a housing (4), which is fitted onto the conveying mechanism. The housing (4) has a first opening (41) and a second opening (42). The first opening (41) corresponds to the position of the feed inlet (2), and the second opening (42) corresponds to the position of the discharge outlet (3).

9. The multi-layer cylindrical drum slag cooler according to claim 8, characterized in that, The outer casing (4) includes a first casing and a second casing, which are detachably connected.

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