Supporting wheel of sulfating roasting rotary kiln

Abstract

According to the supporting riding wheel of the sulfating roasting rotary kiln, a riding wheel device, a kiln barrel hub ring and a protection partition are arranged, a riding wheel mechanism is divided into an upper part and a lower part, an upper support and a lower base can move horizontally relatively, a gap between the riding wheel and a kiln barrel can be adjusted conveniently during installation, and the requirements of different installation positions are met; meanwhile, the hub ring is formed by machining a Q245R steel plate, wraps and is welded at the rolling ring connected with the cylinder body, and is used for being matched with the riding wheel; the protection partition is formed by welding Q235B steel and is used for isolating flames and avoiding direct contact with the riding wheel mechanism; the riding wheel device can effectively reduce the twisting stress of the long kiln barrel and share the bearing of the riding wheels at the kiln head and the kiln tail, reduce the deformation of the barrel, reduce the breakage risk of the barrel, and improve the operation efficiency and the production stability of the rotary kiln.

Description

Technical Field

[0001] This utility model belongs to the technical field of rotary kiln equipment, and specifically relates to a support roller for a sulfation roasting rotary kiln. Background Technology

[0002] In the copper smelting industry, rotary kilns are key equipment for processing anode slime. During operation, due to the excessive length and weight of the kiln shell, coupled with the high temperature, heavy load, and continuous operation, the kiln shell is prone to slight bending and misalignment. This leads to significant bending and thermal stress on the kiln shell, resulting in frequent kiln shell fractures, severely impacting production efficiency and safety, and increasing production costs. A copper smelting company owns two sulfation roasting rotary kilns. After weighing and sampling the anode slime, it is mixed with concentrated sulfuric acid and water in a slurry tank at a certain ratio. The slurry is then fed into the rotary kiln by a screw feeder for roasting and selenium distillation. Under roasting conditions, copper, silver, lead, and other minerals in the anode slime undergo sulfate conversion, forming roasted sand which is discharged from the kiln tail. Due to the high-temperature operating environment and the long and heavy kiln shell, the rotary kiln has repeatedly experienced cracks and even fractures in the kiln shell during production. This results in significant production and maintenance costs for kiln shell repair and replacement. The kiln body overhaul and replacement resulted in a 3-ton reduction in daily anode mud feeding, causing a production loss of approximately 100,000 yuan. The cost of replacing and repairing the kiln body equipment was approximately 300,000 yuan.

[0003] The utility model disclosed in announcement number CN221992381U is a kiln tail smoke chamber support plate. Its key technical features include a base plate and a support plate body fixed to one side of the top of the base plate. A groove is provided at the connection between the base plate and the support plate body. The upper surface of the support plate body includes a protrusion at the end of the support plate body and two reinforcing ribs in the middle of the support plate body. The reinforcing ribs are perpendicular to the base plate, with one end connected to the protrusion and the other end extending to the edge of the groove away from the base plate. Two supporting ribs are provided on the lower surface of the support plate body, with the supporting ribs opposite to the reinforcing ribs. This design strengthens the middle part of the support plate, making the connection between the middle part of the support plate and the castable refractory more secure and less prone to breakage. However, the position of the support plate is fixed, and it is cast in one piece using heat-resistant steel, so its position cannot be adjusted.

[0004] Utility model announcement CN221992381U discloses a kiln tail smoke chamber support plate. Key technical features include a support roller device positioned between the furnace tube and the support roller. This support roller device comprises a base, an elastic support, and a support roller bracket. The support roller bracket is L-shaped and includes a base plate and a vertical plate. The base plate is connected to the base via the elastic support. The base is fixed to the outer periphery of the furnace tube, and the vertical plate is mounted on the side of the support roller. The rotary kiln includes a support roller and a support roller support device. The support roller support devices are respectively positioned on both sides of the support roller, with each side's support roller support devices arranged in a circular array around the center of the furnace tube and the support roller on the circular surface of the support roller's side. However, the auxiliary support roller is connected to the support roller via a sprocket, and its position and the gap between the support rollers cannot be adjusted. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by providing a support roller for a sulfation roasting rotary kiln, which improves the structural stability of the rotary kiln and allows for adjustable gaps between the support roller and the kiln body.

[0006] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0007] A support roller for a sulfation roasting rotary kiln includes a hub ring fixedly sleeved on the kiln shell, a support roller mechanism located below the hub ring, and thermal insulation partitions arranged axially on both sides of the support roller mechanism, wherein the thermal insulation partitions are fixed to the hub ring.

[0008] The roller support mechanism includes a lower base and two upper supports that are symmetrically and movably mounted on the lower base. Rollers are rotatably mounted on the inner side of the upper supports, and the axial direction of the rollers is parallel to the axial direction of the connecting cylinder.

[0009] The lower base has a rectangular hole, and the upper support has a bolt hole. The lower base and the upper support are fixed together by the provided bolts.

[0010] The upper support includes a support plate and two side plates fixed on the support plate, with rollers rotatably arranged between the two side plates, and threaded holes opened on the support plate.

[0011] Both upper supports can slide back and forth along the rectangular hole on the lower base.

[0012] The hub is made of Q245R steel and is welded onto the kiln shell.

[0013] The thermal insulation partition is welded from Q235B steel plate.

[0014] A rotating shaft is fixed between the two side plates of the upper support, and a bushing is rotatably mounted on the rotating shaft. The support roller is mounted on the bushing and rotates around the bushing.

[0015] The roller support mechanism is made of stainless steel.

[0016] The rotating shaft and bushing are made of 310s stainless steel, and the support roller is made of 601 stainless steel.

[0017] Both the upper and lower supports are made of 310s stainless steel.

[0018] The beneficial effects of this utility model are:

[0019] (1) The supporting rollers of the sulfation roasting rotary kiln are divided into upper and lower parts by setting up a supporting roller device, a kiln shell hub ring and a protective partition. The upper support and the lower base can be moved relative to each other, which facilitates the adjustment of the gap between the supporting rollers and the kiln shell during installation and meets the requirements of different installation positions. At the same time, the hub ring is made of Q245R steel plate and is wrapped and welded to the roller ring connected to the shell for use with the supporting rollers. The protective partition is made of Q235B steel and is used to isolate the flame and avoid direct contact with the supporting roller mechanism. This supporting roller device can effectively reduce the torsional stress of the long kiln shell and share the load of the kiln head and kiln tail supporting rollers, reduce the deformation of the shell, reduce the risk of shell breakage, and improve the operating efficiency and production stability of the rotary kiln.

[0020] (2) The support roller bracket is bolted to the base. The bracket can be moved along the rectangular hole of the base, which makes it easy to adjust the gap between the support roller and the kiln body during installation.

[0021] (3) Improve the structural stability of the rotary kiln, making the rotary kiln operate more stably under high temperature conditions, thereby improving production efficiency and production cycle, and reducing equipment failure rate and production cost.

[0022] (4) The rotating shaft, bushing, bracket and base of the support roller mechanism are made of 310s stainless steel with a maximum temperature resistance of 1200℃. The support roller is made of 601 stainless steel with a maximum temperature resistance of 1260℃, which meets the temperature conditions of the calcining rotary kiln.

[0023] (5) The hub ring used for reinforcing the kiln shell is made of Q245R steel plate, which has high temperature resistance, corrosion resistance, plasticity and welding performance.

[0024] (6) The sulfuric acid roasting rotary kiln needs to be heated by natural gas during operation. The flame temperature can reach up to 1000℃. The heat insulation partition effectively isolates the flame and ensures a good operating environment for the support rollers. Attached Figure Description

[0025] Figure 1 This is a perspective view of the installation of this utility model;

[0026] Figure 2 This is the main installation view of this utility model;

[0027] Figure 3 This is a 3D diagram of the roller support mechanism;

[0028] Figure 4 This is the front view of the roller mechanism;

[0029] Figure 5 yes Figure 4 Sectional view along axis AA;

[0030] Figure 6 This is a structural diagram of the support roller;

[0031] Figure 7 yes Figure 6 CC-direction sectional view. Detailed Implementation

[0032] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0033] Please see Figure 1 It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention's implementation.

[0034] This utility model provides a support roller for a sulfation roasting rotary kiln, such as... Figures 1 to 7 As shown.

[0035] A support roller for a sulfation roasting rotary kiln includes a hub ring 7 fixedly sleeved on the kiln shell, a support roller mechanism located below the hub ring 7, and heat-insulating partitions 8 arranged axially on both sides of the support roller mechanism, with the heat-insulating partitions 8 fixed to the hub ring 7; the support roller mechanism includes a lower base 5 and two upper supports 3 symmetrically and movably arranged on the lower base 5, with a support roller 2 rotatably arranged inside the upper supports 3, and the axial direction of the support roller 2 being parallel to the axial direction of the kiln shell.

[0036] The lower base 5 has a rectangular hole, and the upper support 3 has a bolt hole. The lower base 5 and the upper support 3 are fixed together by the provided bolts 6.

[0037] The upper support 3 includes a support plate and two side plates fixed on the support plate, and the rollers 2 are rotatably arranged between the two side plates, while the threaded holes are opened on the support plate; the positions of the two upper supports 3 on the lower base 5 can be slid back and forth along the rectangular holes, and are fixed and connected by bolts 6.

[0038] In this embodiment, the hub ring 7 is made of Q245R steel and is welded and fitted onto the kiln shell; the thermal insulation partition 8 is made of Q235B steel plate and is fixedly placed on both sides of the support roller to isolate the flame.

[0039] A rotating shaft 1 is fixed between the two side plates of the upper support 3, and a bushing 4 is rotatably mounted on the rotating shaft 1. The support roller 2 is sleeved on the bushing 4 and rotates around the bushing 4. The support roller mechanism is made of stainless steel. Preferably, the rotating shaft 1 and bushing 4 are made of 310s stainless steel, and the support roller 2 is made of 601 stainless steel. The upper support 3 and the lower base 5 are also made of 310s stainless steel.

[0040] The supporting roller device of this sulfation roasting rotary kiln, through the setting of a supporting roller device, kiln shell hub ring, and protective partition, uses specific materials and structures for the supporting roller mechanism, which is divided into upper and lower parts. The upper part consists of supporting rollers, rotating shafts, bushings, and upper supports. The supporting rollers are made of 601 stainless steel, while the shaft, bushings, and upper supports are made of 310s stainless steel. The rotating shaft is fixedly welded to the upper support, and the supporting rollers are wrapped around the bushings and can slide relative to each other. The lower base is made of 310s steel plate. The upper and lower parts are connected by bolts, and the upper support... The lower base can slide relative to the support rollers, facilitating adjustment of the gap between the support rollers and the kiln shell during installation. The hub ring is made of Q245R steel plate and is welded to the roller ring connecting the shell, for use with the support rollers. The protective partition is welded from Q235B steel to isolate the flame and prevent direct contact with the support roller mechanism. This support roller device can effectively reduce the torsional stress of the long kiln shell and distribute the load of the support rollers at the kiln head and kiln tail, reduce shell deformation, lower the risk of shell breakage, and improve the operating efficiency and production stability of the rotary kiln.

[0041] If this patent uses terms such as "first" and "second" to define components, those skilled in the art should know that the use of "first" and "second" is merely for the convenience of describing this utility model and simplifying the description, and the above terms have no special meaning.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

Claims

1. A support roller for a sulfation roasting rotary kiln, characterized in that: It includes a hub ring fixedly fitted onto the kiln shell, a support roller mechanism located below the hub ring, and thermal insulation partitions arranged axially on both sides of the support roller mechanism, with the thermal insulation partitions fixed to the hub ring; The roller support mechanism includes a lower base and two upper supports that are symmetrically and movably mounted on the lower base. Rollers are rotatably mounted on the inner side of the upper supports, and the axial direction of the rollers is parallel to the axial direction of the connecting cylinder. The lower base has a rectangular hole, and the upper support has a bolt hole. The lower base and the upper support are fixed together by the provided bolts.

2. The support roller of a sulfation roasting rotary kiln according to claim 1, characterized in that: The upper support includes a support plate and two side plates fixed on the support plate, with rollers rotatably arranged between the two side plates, and threaded holes opened on the support plate. Both upper supports can slide back and forth along the rectangular hole on the lower base.

3. The support roller of a sulfation roasting rotary kiln according to claim 1, characterized in that: The hub is made of Q245R steel and is welded onto the kiln shell.

4. The support roller of a sulfation roasting rotary kiln according to claim 1, characterized in that: The thermal insulation partition is welded from Q235B steel plate.

5. The support roller of a sulfation roasting rotary kiln according to claim 2, characterized in that: A rotating shaft is fixed between the two side plates of the upper support, and a bushing is rotatably mounted on the rotating shaft. The support roller is mounted on the bushing and rotates around the bushing.

6. A support roller for a sulfation roasting rotary kiln according to any one of claims 1 to 5, characterized in that: The roller support mechanism is made of stainless steel.

7. The support roller of a sulfation roasting rotary kiln according to claim 5, characterized in that: The rotating shaft and bushing are made of 310s stainless steel, and the support roller is made of 601 stainless steel.

8. The support roller of a sulfation roasting rotary kiln according to claim 6, characterized in that: Both the upper and lower supports are made of 310s stainless steel.

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