Device for solving hardening of ash cakes on inner wall of drying cylinder

Abstract

The utility model relates to a device for solving hardening of ash cakes on the inner wall of a drying cylinder, which comprises a plurality of groups of disturbance components mounted on the cylinder wall, the plurality of groups of disturbance components are annularly and uniformly arranged along the inner wall of the drying cylinder, each group of disturbance component is linearly arranged along the axial direction of the drying cylinder, and an included angle is formed between each group of disturbance component and the axis of the drying cylinder, so that the disturbance range of the ash cakes on the cylinder wall is enlarged; each group of disturbance assembly comprises a fixing unit and a chain group, a plurality of fixing units are arranged on the cylinder wall at intervals, the chain group is fixedly connected with the cylinder wall through the fixing units, the chain group is composed of broken-line-shaped chains formed by continuously bending up and down instead of a single vertical chain, each upper bending part of the chain group is connected with the cylinder wall through one fixing unit, and each lower bending part of the chain group is connected with the cylinder wall through one fixing unit. And the chain group is detachably connected with the fixing unit, so that the chain is convenient to replace. According to the utility model, the disturbing and scattering effect on ash cakes can be improved, the ash cakes are prevented from adhering to the cylinder wall, and meanwhile, the chain can be conveniently disassembled, assembled and replaced.

Description

Technical Field

[0001] This utility model relates to the field of drying equipment technology, and in particular to a device for solving the problem of ash cake caking on the inner wall of a drying cylinder. Background Technology

[0002] In the recycling process of waste aluminum ash, the slurry produced by mixing waste aluminum ash and water is pumped out by a vacuum belt conveyor to produce ash cake with a moisture content of about 25-32%. This ash cake needs to be dried in a drying drum, which is a rotary kiln.

[0003] Currently, damp ash cakes are prone to accumulating on the back plate after entering the drying drum. Large accumulations cause the drum wall to harden, resulting in extensive hardening in the first ten meters of the drying drum. This prevents newly entered ash cakes from being dried and transported, causing them to flow out from the overflow outlet. Alternatively, undried wet lumps may enter the finished ash silo, causing pipe blockage.

[0004] Based on this, our company removed the overhead plate at the discharge port of the drying drum and welded multiple stainless steel chains made of small metal rings, evenly arranged along the drum wall, to that location. Figure 1 As shown. In this way, when the filter cake is conveyed to the drying cylinder by the vacuum belt conveyor, the filter cake falls onto the chain. As the drying cylinder rotates, the chain will throw the filter cake away, avoiding contact between the filter cake and the cylinder wall, which would cause it to clump together.

[0005] Existing technologies also utilize the irregular movement of chains to prevent materials from caking. For example, patent publication number CN221464193U discloses a drying device for sticky materials, in which the chain swings irregularly inside the drying cylinder, striking the material and the inner wall of the drying cylinder to prevent the material from sticking to the inner wall of the drying cylinder.

[0006] In practical applications, the chain's ability to effectively disturb the ash cakes on the cylinder wall needs improvement. Furthermore, each chain is welded during installation, resulting in a small welded area between the chain end and the cylinder wall. Over time, the impact of the chain's own weight and the ash cakes can easily cause weld cracking and chain detachment. Additionally, after prolonged use, the chain itself may break, requiring cutting at the welded area, removing the original chain, and re-welding a new one – a rather cumbersome process. Summary of the Invention

[0007] To address the limited disturbance effect of a single chain and the difficulty in disassembling and replacing the chain, this invention provides a device for resolving the caking of ash cakes on the inner wall of a drying drum. Multiple chains are evenly distributed around the drum wall in a circumferential direction, and the chains are arranged obliquely along the axial direction of the drying drum to increase the contact range with the drum wall, thereby improving the disturbance effect on the ash cakes. At the same time, the chains can be detached from the drum wall for easy chain replacement.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A device for solving the problem of ash cake caking on the inner wall of a drying cylinder includes multiple sets of disturbance components installed on the cylinder wall. The multiple sets of disturbance components are evenly arranged circumferentially along the inner wall of the drying cylinder. Each set of disturbance components is arranged in a straight line along the axial direction of the drying cylinder and has an angle with the axis of the drying cylinder, thereby increasing the disturbance range of ash cake on the cylinder wall.

[0010] Each set of disturbance components includes a fixing unit and a chain assembly. Multiple fixing units are spaced apart on the cylinder wall. The chain assembly is connected and fixed to the cylinder wall through the fixing units. The chain assembly is composed of a zigzag chain formed by continuous bending up and down, rather than a single vertical chain. Each upper bend of the chain assembly is connected to the cylinder wall through a fixing unit. The chain assembly and the fixing units are detachably connected to facilitate the replacement of the chain.

[0011] Furthermore, the disturbance components are arranged at the discharge port of the drying cylinder to facilitate direct disturbance of the ash cake entering the drying cylinder and prevent it from adhering to the cylinder wall. The axial length of each disturbance component is 1-2 meters, which facilitates disturbance of the ash cake within a certain range.

[0012] Furthermore, each of the fixed units includes a fixed seat, a zigzag hook for hooking the chain assembly, a lifting plate, and lifting bolts. The fixed seat is a seat with a lifting groove, the lifting groove extending upward from the fixed seat, and the fixed seat is welded and fixed to the cylinder wall, with the cylinder wall enclosing the lifting groove.

[0013] Furthermore, the mountain-shaped hook is slidably mounted on the fixed base, with the lower end of the mountain-shaped hook located below the fixed base and inserted into it, which facilitates limiting the rotation of the mountain-shaped hook. The lower end of the mountain-shaped hook hooks the chain assembly, and the upper end of the mountain-shaped hook extends into the lifting groove and is connected to the lifting plate, which facilitates the mountain-shaped hook and the lifting plate to slide up and down together.

[0014] Two lifting bolts are symmetrically arranged on the fixed base. The head of the lifting bolt is located below the fixed base for easy operation and turning of the lifting bolt. The tail of the lifting bolt extends upward into the lifting groove and abuts against the lifting plate for easy support of the lifting plate.

[0015] Furthermore, positioning holes are provided on both sides of the fixed base, and the lower ends of the mountain-shaped hooks are respectively inserted into the positioning holes. A large compression spring is provided on the mountain-shaped hook between the lifting plate and the bottom of the lifting groove to cause the mountain-shaped hook to move upward.

[0016] Each of the lifting bolts is inserted into the lifting plate at its tail end. The tail end of the lifting bolt is provided with a top ring. A small compression spring is provided on the lifting bolt between the top ring and the bottom of the lifting groove to prevent the lifting bolt from loosening.

[0017] Furthermore, the chain assembly includes multiple chains, with one chain hooked between two adjacent mountain-shaped hooks, and the chain between two adjacent mountain-shaped hooks is bent into a "V" shape.

[0018] The beneficial effects of this utility model through the above technical solution are:

[0019] This utility model features a reasonable structural design. Multiple sets of disturbance components are evenly arranged circumferentially on the inner wall of the drying cylinder, with each set of disturbance components inclined along the axial direction of the drying cylinder, thereby increasing the contact area between the disturbance components and the drying cylinder. Utilizing the disturbance components as an isolation zone between the cylinder wall and the ash cake, the ash cake can be disturbed and impacted over a wider area, achieving ash cake breakage and preventing the ash cake from adhering to the cylinder wall and forming a hard crust.

[0020] The chain assembly of this invention is installed on the cylinder wall through multiple fixing units. These fixing units are welded to the cylinder wall and feature a special structural design, allowing for detachable connection between the fixing units and the chain assembly. This facilitates easy disassembly and replacement of the chain, and makes maintenance of the entire chain assembly convenient. When the ash cake enters the drying cylinder, it first contacts the chain. As the drying cylinder rotates, the chain causes the ash cake to be thrown out, preventing the ash cake from caking onto the cylinder wall. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the chains arranged inside the drying drum; only a portion of the chains are shown in the diagram.

[0022] Figure 2 This is a schematic diagram of the arrangement of multiple disturbance components of a device for solving the problem of ash cake caking on the inner wall of a drying drum according to this utility model. The arrows in the diagram indicate the conveying direction of the ash cake inside the drying drum.

[0023] Figure 3 This is a front view of the installation of a set of disturbance components for a device that solves the problem of ash cake caking on the inner wall of a drying drum, according to this utility model.

[0024] Figure 4 This utility model relates to a device for solving the problem of ash cake caking on the inner wall of a drying drum. Figure 3 Side view of the installation of the disturbance component in direction A.

[0025] Figure 5 This utility model relates to a device for solving the problem of ash cake caking on the inner wall of a drying drum. Figure 4 Bottom view of fixed unit in direction B.

[0026] Figure 6 This utility model relates to a device for solving the problem of ash cake caking on the inner wall of a drying drum. Figure 5 Sectional view of a fixed element in the CC direction.

[0027] Figure 7 This utility model relates to a device for solving the problem of ash cake caking on the inner wall of a drying drum. Figure 5 Sectional view of the fixed element in the DD direction.

[0028] The attached diagram is labeled as follows: 1. Cylinder wall, 2. Chain, 3. Disturbance assembly, 31. Fixing unit, 32. Chain group, 4. Fixing seat, 41. Lifting groove, 5. Mountain-shaped hook, 51. Main rod section, 52. Hook section, 6. Lifting plate, 7. Lifting bolt, 8. Weld, 9. Rib plate, 10. Positioning hole, 11. Large compression spring, 12. Top ring, 13. Small compression spring. Detailed Implementation

[0029] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0030] like Figures 2-7 As shown, an apparatus for solving the problem of ash cake caking on the inner wall of a drying cylinder includes multiple sets of disturbance components 3 installed on the cylinder wall 1. The multiple sets of disturbance components 3 are evenly arranged circumferentially along the inner wall of the drying cylinder. The disturbance components 3 are arranged at the discharge port of the drying cylinder. The ash cake entering the drying cylinder first contacts the disturbance components 3. The rotating multiple sets of disturbance components 3 are used to scatter the ash cake, thereby preventing the ash cake from caking with the cylinder wall 1.

[0031] Unlike the conventional single chain 2 arranged radially along the drying cylinder, each set of disturbance components 3 is arranged in a straight line along the axial direction of the drying cylinder, and at an angle to the axis of the drying cylinder. The axial length of each set of disturbance components 3 is 1-2 meters. This increases the contact range between the disturbance components 3 and the cylinder wall 1, which can better drive the ash cake on the cylinder wall 1 to be scattered.

[0032] In this embodiment, each set of disturbance components 3 includes a fixing unit 31 and a chain group 32. Multiple fixing units 31 are spaced apart on the cylinder wall 1. Here, a set of disturbance components 3 includes three fixing units 31. The three fixing units 31 are arranged along the axial direction of the drying cylinder. The chain group 32 is connected and fixed to the cylinder wall 1 through the fixing units 31, thereby realizing the installation of the chain group 32.

[0033] Each fixed unit 31 includes a fixed seat 4, a zigzag hook 5 for hooking the chain assembly 32, a lifting plate 6, and lifting bolts 7. The fixed seat 4 is a circular seat with a lifting groove 41. The fixed seat 4 is welded to the cylinder wall 1. A bevel is pre-processed around one end face of the fixed seat 4. After welding, a weld 8 is formed between the bevel and the cylinder wall 1 to ensure that the fixed seat 4 is securely installed on the cylinder wall 1. At the same time, multiple ribs 9 are evenly distributed around the fixed seat 4 and between the fixed seat 4 and the cylinder wall 1 to strengthen it and prevent the fixed seat 4 from falling off.

[0034] The lifting groove 41 is a rectangular groove located on the upper part of the fixed seat 4. The lifting groove 41 does not penetrate the fixed seat 4 downwards, but extends upwards out of the fixed seat 4. After the fixed seat 4 is welded to the cylinder wall 1, the cylinder wall 1 closes the lifting groove 41.

[0035] The mountain-shaped hook 5 is slidably mounted on the fixed base 4 and can rotate relative to the fixed base 4. The mountain-shaped hook 5 includes a main rod section 51 and hook sections 52 symmetrically arranged on both sides of the lower end of the main rod section 51. The main rod section 51 is cylindrical, and the hook sections 52 are bent into a "U" shape.

[0036] The lower end of the mountain-shaped hook 5 is located below the fixed base 4, that is, the hook segment 52 is located below the fixed base 4 and is inserted into the fixed base 4. Specifically, the fixed base 4 has circular positioning holes 10 on both sides. The lower ends of the mountain-shaped hook 5 are inserted into the positioning holes 10 on both sides, that is, each hook segment 52 is inserted into one positioning hole 10, so that the entire mountain-shaped hook 5 can no longer rotate.

[0037] The upper end of the mountain-shaped hook 5 extends into the lifting groove 41 and is connected to the lifting plate 6. Specifically, the main rod section 51 passes through the center of the fixed base 4 and enters the lifting groove 41. The upper end of the main rod section 51 is threadedly connected to the lifting plate 6, which facilitates the connection between the mountain-shaped hook 5 and the lifting plate 6. The lifting plate 6 is a rectangular plate. When the mountain-shaped hook 5 slides up and down, the hook section 52 will disengage from or insert into the positioning hole 10. At the same time, the mountain-shaped hook 5 will drive the lifting plate 6 to move up and down within the lifting groove 41.

[0038] A large compression spring 11 is sleeved on the U-shaped hook 5 between the bottom of the lifting plate 6 and the lifting groove 41, and the large compression spring 11 is sleeved on the outside of the main rod section 51. Under the action of the large compression spring 11, the lifting plate 6 is pushed upward, which also causes the U-shaped hook 5 to move upward, and then the hook section 52 is inserted into the positioning hole 10. When the U-shaped hook 5 is pulled downward by manual force, the large compression spring 11 is compressed, and the hook section 52 can be disengaged from the positioning hole 10.

[0039] Since the mountain-shaped hook 5 can slide up and down, two lifting bolts 7 are symmetrically arranged on the fixing base 4 to fix the mountain-shaped hook 5. The lifting bolts 7 are threaded to the fixing base 4. The head of the lifting bolt 7 is located below the fixing base 4, and the head of the lifting bolt 7 is hexagonal prism-shaped to facilitate the turning of the lifting bolt 7.

[0040] The tail of the lifting bolt 7 extends upward into the lifting groove 41 and abuts against the lifting plate 6. Specifically, the tail of each lifting bolt 7 is inserted into the lifting plate 6, and the lifting bolt 7 can rotate relative to the lifting plate 6. When the lifting bolt 7 is tightened, the lifting bolt 7 moves upward, causing the lifting plate 6 to press tightly against the cylinder wall 1, thus fixing the lifting plate 6. At this time, the two sides of the mountain-shaped hook 5 are inserted into the positioning holes 10, and the mountain-shaped hook 5 is also fixed.

[0041] To prevent the lifting bolt 7 from loosening, a top ring 12 is provided at the tail of the lifting bolt 7. The top ring 12 is a circular ring. After the tail of the lifting bolt 7 extends into the lifting groove 41, the top ring 12 is welded and fixed to the tail of the lifting bolt 7. A small compression spring 13 is sleeved on the lifting bolt 7 between the top ring 12 and the bottom of the lifting groove 41. The small compression spring 13 is installed before the top ring 12 is welded and plays a role in preventing the lifting bolt 7 from loosening. The force generated by the small compression spring 13 can restrict the lifting bolt 7 from sliding along the threaded seat 4, thereby ensuring that the lifting bolt 7 will not easily loosen. Based on the application environment of the drying cylinder, both the small compression spring 13 and the large compression spring 11 are heat-resistant compression springs to maintain good elasticity and mechanical properties.

[0042] The chain assembly 32 is composed of a zigzag chain 2 formed by continuous vertical bends. During installation, each upper bend of the chain assembly 32 is connected to the cylinder wall 1 via a fixing unit 31. The chain assembly 32 and the fixing unit 31 are detachably connected, meaning that the lower end of the mountain-shaped hook 5 hooks onto the chain assembly 32. Compared to the conventional method of directly welding and fixing the chain 2, the detachable connection makes the maintenance of the chain 2 more convenient, and the chain 2 can be easily replaced.

[0043] In this embodiment, the chain assembly 32 includes multiple chains 2. Since there are three fixed units 31 within a set of disturbance components 3, there are two chains 2. One chain 2 is arranged between each pair of fixed units 31, and each chain 2 is composed of several chain links connected together. Specifically, one chain 2 is hooked between two adjacent mountain-shaped hooks 5, and the end of the chain 2 is connected to the hook segment 52. The chain 2 between two adjacent mountain-shaped hooks 5 is bent into a "V" shape, and the two chains 2 are arranged in a "W" shape.

[0044] Based on this, a chain 2 is installed on each of the three fixed units 31 located at both ends. In this way, there are four chains 2 in a set of disturbance components 3, with the chain 2 at the end being shorter and the chain 2 in the "V" shape being longer.

[0045] During installation, the following steps are taken: First, the mountain-shaped hook 5 is slidably connected to the fixed base 4. Then, the lifting bolt 7 is installed to the fixed base 4. After installing the small compression spring 13 and the top ring 12 on the lifting bolt 7, the large compression spring 11 and the lifting plate 6 are finally installed. The lifting plate 6 is then threadedly connected and fixed to the mountain-shaped hook 5, thus forming a fixed unit 31. In the initial state, the lifting bolt 7 in the fixed unit 31 is not tightened, so the lifting bolt 7 does not abut against the lifting plate 6, and the lifting plate 6 and the mountain-shaped hook 5 can slide up and down together.

[0046] Workers carry several fixed units 31 and chains 2 into the drying drum, which is under maintenance. They select three fixed units 31 and four chains 2 to install a set of disturbance units. The three fixed units 31 are arranged in a straight line at an angle and then welded to the drum wall 1. Ribs 9 can be used for reinforcement during welding.

[0047] After the fixing unit 31 is welded, manually pull down the zigzag hook 5 to put the chain 2 onto the hook section 52. Then, loosen the zigzag hook 5 and tighten the lifting bolt 7 to move the zigzag hook 5 upward and fix it. Then, the hook section 52 is inserted into the positioning hole 10, which can prevent the chain 2 from falling off the hook section 52. Note that a longer chain 2 is placed between two adjacent zigzag hooks 5, and a shorter chain 2 is placed on the zigzag hook 5 at the end.

[0048] Multiple sets of disturbance units are evenly arranged circumferentially at the feed inlet of the drying drum as described above. During normal operation, the drying drum rotates continuously: the ash cake enters at the feed inlet of the drying drum and falls directly onto the rotating disturbance component 3. Through the irregular swinging of multiple chains 2 in the chain group 32, the ash cake is scattered and struck, thereby preventing the ash cake from adhering to the drum wall 1, preventing caking, and improving the drying effect of the ash cake.

[0049] If chain 2 breaks after prolonged operation and needs to be replaced, simply loosen the lifting bolt 7 so that it is no longer in contact with the lifting plate 6; manually pull down the mountain-shaped hook 5 to remove the broken chain 2 from the hook section 52, and then install the new chain 2.

[0050] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. A device for solving the problem of ash cake caking on the inner wall of a drying drum, characterized in that, It includes multiple sets of disturbance components (3) installed on the cylinder wall (1). The multiple sets of disturbance components (3) are evenly arranged circumferentially along the inner wall of the drying cylinder. Each set of disturbance components (3) is arranged in a straight line along the axis of the drying cylinder and has an angle with the axis of the drying cylinder. Each set of disturbance components (3) includes a fixing unit (31) and a chain group (32). Multiple fixing units (31) are spaced apart on the cylinder wall (1). The chain group (32) is connected and fixed to the cylinder wall (1) through the fixing unit (31). The chain group (32) is composed of a zigzag chain (2) formed by continuous bending up and down. Each upper bend of the chain group (32) is connected to the cylinder wall (1) through a fixing unit (31). The chain group (32) and the fixing unit (31) are detachably connected.

2. The device for solving the problem of ash cake caking on the inner wall of a drying cylinder according to claim 1, characterized in that, The disturbance component (3) is arranged at the discharge port of the drying cylinder, and the axial length of each disturbance component (3) is 1-2 meters.

3. The device for solving the problem of ash cake caking on the inner wall of a drying cylinder according to claim 1, characterized in that, Each of the fixed units (31) includes a fixed seat (4), a mountain-shaped hook (5) for hooking the chain assembly (32), a lifting plate (6) and a lifting bolt (7). The fixed seat (4) is a seat with a lifting groove (41). The lifting groove (41) extends upward from the fixed seat (4). The fixed seat (4) is welded and fixed to the cylinder wall (1). The cylinder wall (1) closes the lifting groove (41).

4. The device for solving the problem of ash cake caking on the inner wall of a drying cylinder according to claim 3, characterized in that, The mountain-shaped hook (5) is slidably mounted on the fixed seat (4). The lower end of the mountain-shaped hook (5) is located below the fixed seat (4) and is inserted into the fixed seat (4). The lower end of the mountain-shaped hook (5) hooks the chain assembly (32). The upper end of the mountain-shaped hook (5) extends into the lifting groove (41) and is connected to the lifting plate (6). Two lifting bolts (7) are symmetrically arranged on the fixed seat (4). The head of the lifting bolt (7) is placed below the fixed seat (4), and the tail of the lifting bolt (7) extends upward into the lifting groove (41) and abuts against the lifting plate (6).

5. The device for solving the problem of ash cake caking on the inner wall of a drying cylinder according to claim 4, characterized in that, The fixed base (4) has positioning holes (10) on both sides. The lower ends of the mountain-shaped hook (5) are inserted into the positioning holes (10) respectively. A large compression spring (11) is provided on the mountain-shaped hook (5) between the bottom of the lifting plate (6) and the lifting groove (41). Each of the lifting bolts (7) is inserted into the lifting plate (6) at its tail. A top ring (12) is provided at the tail of the lifting bolt (7). A small compression spring (13) is provided on the lifting bolt (7) between the top ring (12) and the bottom of the lifting groove (41).

6. The apparatus for solving the problem of ash cake caking on the inner wall of a drying drum according to claim 4, characterized in that, The chain assembly (32) includes multiple chains (2), with one chain (2) hooked between two adjacent mountain-shaped hooks (5), and the chain (2) between two adjacent mountain-shaped hooks (5) is bent into a "V" shape.

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