A replaceable composite lining plate for sulfur catalyst mixing mill

Abstract

The utility model discloses a kind of sulphur sulphur catalyst mixing mill replaceable composite lining, belong to mixing mill accessory technical field, including mixing mill cylinder body, and the multiple lining body of being set to mixing mill cylinder body inside, the lining body is detachably set to the inside of mixing mill cylinder body by fixed mechanism, the fixed mechanism includes the inverted T shape fixed plate of being set to mixing mill cylinder body inside, T-shaped plugboard, first plug-in component for the insertion between adjacent lining, and second plug-in component for the insertion of fixed plate and T-shaped plugboard, the utility model is through the multilayer composite structure design of supporting base layer, buffer layer, wear-resistant reinforcing layer and corrosion-resistant surface layer, in combination with the different material and process of each layer, lining body has high strength, high wear resistance, corrosion resistance and buffering performance, significantly improve the comprehensive performance and service life of lining body, beneficial to improve the practicability of device.

Description

Technical Field

[0001] This utility model relates to the technical field of mixing mill accessories, and more specifically to a replaceable composite liner for a sulfur-producing catalyst mixing mill. Background Technology

[0002] In the production of sulfur catalysts, the mixing mill is one of the commonly used pieces of equipment, mainly used in the petrochemical, fertilizer, and environmental protection industries to prepare high-efficiency sulfur catalysts. Its core function is to uniformly mix and refine raw materials such as sulfur, metal oxides, and activated carbon, thereby improving the reactivity and efficiency of the catalyst. Its working principle includes mixing and grinding, thermal control, and catalyst enhancement to ensure that the catalyst can perform optimally under high temperature and high pressure environments. The internal lining of the mixing mill plays a crucial role in protecting the mill body and assisting in the mixing of materials.

[0003] However, the existing mixing mills mostly have single-material liners, which have poor wear and corrosion resistance when facing highly corrosive materials and high-impact mixing operations in the production of sulfur catalysts. This results in short liner lifespan and frequent replacements, which not only increases costs but also affects production continuity. In addition, the existing liners are complicated to install and disassemble, and are inconvenient to maintain, which reduces the efficiency of the equipment. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of existing mixing mills where the internal liners are mostly made of a single material, resulting in poor wear resistance and corrosion resistance, leading to short service life and frequent replacements that not only increase costs but also affect production continuity. Furthermore, the existing liners are complex to install and disassemble, inconvenient to maintain, and reduce the efficiency of the equipment. The present invention provides a replaceable composite liner for sulfur catalyst mixing mills.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A replaceable composite liner for a sulfur-producing catalyst mixing mill includes a mill cylinder and multiple liner bodies disposed inside the mill cylinder. The liner bodies are detachably disposed inside the mill cylinder via a fixing mechanism. The fixing mechanism includes an inverted T-shaped fixing plate, a T-shaped insert plate, a first insertion assembly for interlocking adjacent liner bodies, and a second insertion assembly for interlocking the fixing plate and the T-shaped insert plate. The mill cylinder and the inverted T-shaped fixing plate are fixedly connected by a first fixing bolt. The liner bodies and the T-shaped insert plates are integrally formed, and the liner bodies and the T-shaped fixing plates are connected by a second fixing bolt.

[0007] As a further description of the above technical solution, the first plug-in assembly includes a first T-shaped plug fixedly connected to one side of the liner body, and a first T-shaped slot adapted to the first T-shaped plug on the other side of the liner body.

[0008] As a further description of the above technical solution, the second plug-in assembly includes a second T-shaped plug fixedly connected to the T-shaped plug plate, and a second T-shaped slot adapted to the second T-shaped plug on the inverted T-shaped fixing plate.

[0009] As a further description of the above technical solution, the liner body includes a supporting base layer, a buffer layer is provided on the inner side of the supporting base layer, a wear-resistant reinforcing layer is provided on the inner side of the buffer layer, and a corrosion-resistant surface layer is provided on the inner side of the wear-resistant reinforcing layer.

[0010] As a further description of the above technical solution, the supporting base layer is a high-strength steel plate with a thickness of 8-12mm, and the buffer layer is made of elastic rubber with a thickness of 4-6mm.

[0011] As a further description of the above technical solution, the wear-resistant reinforcing layer is made of tungsten carbide coating with a thickness of 2-3 mm, and the corrosion-resistant surface layer is made of polytetrafluoroethylene with a thickness of 1-2 mm.

[0012] As a further description of the above technical solution, the inner wall of the liner body is provided with a number of stirring protrusions, which are triangular prisms with a height of 5-10mm.

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

[0014] 1. This utility model, through a multi-layer composite structure design consisting of a supporting base layer, a buffer layer, a wear-resistant reinforcing layer, and a corrosion-resistant surface layer, combined with different materials and processes for each layer, enables the liner body to possess high strength, high wear resistance, corrosion resistance, and buffering performance, significantly improving the overall performance and service life of the liner body. It can adapt to the harsh working environment in the sulfur catalyst production process and is conducive to improving the practicality of the device.

[0015] 2. This utility model uses an inverted T-shaped fixing plate and a T-shaped insert plate, which are interlocked to facilitate the quick and easy initial fixing of the liner body. Then, the liner body is tightened by the second fixing bolt, which makes it easy to firmly install the liner body on the inner wall of the mixing mill cylinder. Disassembly is also convenient, reducing the difficulty of installation and disassembly and saving manpower and time costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a replaceable composite liner for a sulfur catalyst mixing mill.

[0017] Figure 2 This is a schematic diagram of the structure of the liner and inverted T-shaped fixing plate after the removal of the liner of a replaceable composite liner for a sulfur catalyst mixing mill.

[0018] Figure 3 It shows Figure 2 Enlarged view of point A in the middle.

[0019] Figure 4 This is a schematic cross-sectional view of the main body of a replaceable composite liner for a sulfur catalyst mixing mill.

[0020] Reference numerals in the attached drawings: 1. Mixing mill cylinder; 2. Liner body; 21. Support base layer; 22. Buffer layer; 23. Wear-resistant reinforcing layer; 24. Corrosion-resistant surface layer; 3. Inverted T-shaped fixing plate; 4. T-shaped insert plate; 5. First fixing bolt; 6. Mixing protrusion; 7. First T-shaped insert block; 8. First T-shaped slot; 9. Second T-shaped insert block; 10. Second T-shaped slot; 11. Second fixing bolt. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0022] This utility model provides a replaceable composite liner for a sulfur-producing catalyst mixing mill. Please refer to [reference needed]. Figures 1-4 As shown, the device includes a mixing mill cylinder 1 and multiple liner body 2 disposed inside the mixing mill cylinder 1. The liner body 2 is detachably disposed inside the mixing mill cylinder 1 by a fixing mechanism. The fixing mechanism includes an inverted T-shaped fixing plate 3, a T-shaped insert plate 4, a first insertion assembly for interlocking adjacent liner body 2, and a second insertion assembly for interlocking the fixing plate 3 and the T-shaped insert plate 4. The mixing mill cylinder 1 and the inverted T-shaped fixing plate 3 are fixedly connected by a first fixing bolt 5. The liner body 2 and the T-shaped insert plate 4 are integrally formed. The liner body 2 and the T-shaped fixing plate 3 are connected by a second fixing bolt 11.

[0023] In this embodiment, the liner body 2, supported by a high-strength steel plate base 21, provides stable structural support for the liner body 2, ensuring that it can withstand the impact of materials and the vibration generated by the operation of the mixing mill. The buffer layer 22 is made of elastic rubber, which has good flexibility and elastic recovery ability. It can undergo elastic deformation when subjected to external impact, thereby buffering and dispersing the impact force and protecting the liner body 22 and the equipment. The tungsten carbide coating of the wear-resistant reinforcement layer 23, with its extremely high hardness, effectively resists wear during the friction between the material and the surface of the liner body 2, reducing the thickness loss of the liner body 2 due to friction. The polytetrafluoroethylene material of the corrosion-resistant surface layer 24 has excellent chemical stability, which can isolate the direct contact between highly corrosive materials and the support base 21, buffer layer 22 and wear-resistant reinforcement layer 23, preventing the liner body 2 from being corroded, thereby extending the service life of the liner body 2.

[0024] The inverted T-shaped fixing plate 3 is adapted to the T-shaped insert plate 4. The second T-shaped inserts 9 on both sides of the T-shaped insert plate 4 are aligned with the second T-shaped slots 10 opened between the two inverted T-shaped fixing plates 3 and inserted, so as to facilitate quick insertion and positioning of the liner body 2. Then, through the mounting holes opened on the liner body 21, the second fixing bolts 11 are used to firmly install the liner body 2 on the inner wall of the mixing mill 1, which facilitates the quick installation and disassembly of the liner body 2. At the same time, it enhances the connection between the liner body 2 and the inner wall of the mixing mill cylinder 1, making operation convenient and easy to maintain and replace.

[0025] Furthermore, the first insertion assembly includes a first T-shaped plug 7 fixedly connected to one side of the liner body 2, and a first T-shaped slot 8 adapted to the first T-shaped plug 7 on the other side of the liner body 2. The second insertion assembly includes a second T-shaped plug 9 fixedly connected to the T-shaped plug plate 4, and a second T-shaped slot 10 adapted to the second T-shaped plug 9 on the inverted T-shaped fixing plate 3.

[0026] During installation, the T-shaped insert plate 4 is adapted to the inverted T-shaped fixing plate 3. The second T-shaped insert 9 cooperates with the second T-shaped slot 10 to facilitate quick insertion of the T-shaped insert plate 4 into the inverted T-shaped fixing plate 3. The first T-shaped insert 7 cooperates with the first T-shaped slot 8 to facilitate quick splicing of the liner body 2. The second T-shaped insert 9 of the T-shaped insert plate 4 is aligned with the second T-shaped slot 10 and inserted, and the first T-shaped slot 8 is aligned with the first T-shaped insert 7 and inserted, thus facilitating quick splicing of the liner body 2. After the liner body 2 is initially inserted and positioned, the liner 2 is locked by the second fixing bolt 11, making it firmly installed on the inner wall of the mixing mill 1. During disassembly, only the second fixing bolt 11 needs to be removed to unlock it, and then the entire liner body 2 and the T-shaped insert plate 4 can be pushed out from between the adjacent inverted T-shaped fixing plates 3. The operation is convenient and easy to use.

[0027] Furthermore, the liner body 2 includes a supporting base layer 21, a buffer layer 22 is provided on the inner side of the supporting base layer 21, a wear-resistant reinforcing layer 23 is provided on the inner side of the buffer layer 22, and a corrosion-resistant surface layer 24 is provided on the inner side of the wear-resistant reinforcing layer 23.

[0028] The supporting base layer 21 is made of high-strength steel plate, specifically Q345 high-strength steel plate, which has excellent comprehensive mechanical properties. It provides sufficient strength support for the liner body 2, ensuring the stability of the liner body 2 within the mixing mill. Its thickness is 8-12mm. The buffer layer 22 is made of elastic rubber, possessing good flexibility and elastic recovery capabilities. It can elastically deform when subjected to external impact, thereby buffering and dispersing the impact force. During the operation of the mixing mill, the stirring and collision of materials will frequently generate impact forces on the liner. The elastic rubber buffer layer 22 can effectively alleviate these impact forces on other structural layers of the liner and the mixing mill body. To protect the liner body 22 and equipment, the wear-resistant reinforcing layer 23 is made of tungsten carbide coating, which is uniformly coated on the surface of the supporting base layer through a thermal spraying process. The coating thickness is 2-3mm. Tungsten carbide has extremely high hardness and wear resistance, which can effectively resist the wear of the liner body 2 by materials during the mixing and rolling process, and extend the service life of the liner body 2. The corrosion-resistant surface layer 24 is made of polytetrafluoroethylene, which is tightly bonded to the wear-resistant reinforcing layer through molding. Its thickness is 1-2mm. Polytetrafluoroethylene has excellent chemical stability and can effectively resist the erosion of highly corrosive materials during the production of sulfur catalyst, protecting the supporting base layer and the wear-resistant reinforcing layer from corrosion.

[0029] Furthermore, the inner wall of the liner body 2 is provided with several stirring protrusions 6. The stirring protrusions 6 are triangular prisms with a height of 5-10mm. When the mixing mill is running, the irregularly distributed triangular prism-shaped stirring protrusions 6 on the inner wall of the liner body 2 rotate and come into contact with and interact with the material. The unique triangular prism shape of the stirring protrusions 6 allows them to apply pushing and squeezing forces to the material from multiple angles during rotation, changing the trajectory of the material and causing it to roll, shift, and rub against each other, breaking the original accumulation state of the material, thereby achieving uniform mixing of the material, effectively improving the mixing efficiency and uniformity of the material, and improving the production quality of sulfur-making catalysts.

[0030] The working principle of this utility model is as follows: During installation, the T-shaped insert plate 4 is adapted to the inverted T-shaped fixing plate 3. The second T-shaped insert 9 cooperates with the second T-shaped slot 10, making it easy and quick to insert the T-shaped insert plate 4 into the inverted T-shaped fixing plate 3. The first T-shaped insert 7 cooperates with the first T-shaped slot 8, making it easy to quickly assemble the liner body 2. The second T-shaped insert 9 of the T-shaped insert plate 4 is aligned with the second T-shaped slot 10 and inserted, and the first T-shaped slot 8 is aligned with the first T-shaped insert 7 and inserted, thus facilitating the quick assembly of the liner body 2. After the liner body 2 is initially inserted and positioned, the liner 2 is locked by the second fixing bolt 11, making it firmly installed on the inner wall of the mixing mill 1. During disassembly, only the second fixing bolt 11 needs to be removed to unlock it, and then the entire liner body 2 and the T-shaped insert plate 4 can be pushed out from between the adjacent inverted T-shaped fixing plates 3. The operation is convenient and easy to use.

[0031] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A replaceable composite liner for a sulfur-producing catalyst mixing mill, characterized in that: The device includes a grinding mill cylinder (1) and multiple liner bodies (2) disposed inside the grinding mill cylinder (1). The liner bodies (2) are detachably disposed inside the grinding mill cylinder (1) by a fixing mechanism. The fixing mechanism includes an inverted T-shaped fixing plate (3), a T-shaped insert plate (4), a first insertion component for interlocking adjacent liner bodies (2), and a second insertion component for interlocking the fixing plate (3) and the T-shaped insert plate (4). The grinding mill cylinder (1) and the inverted T-shaped fixing plate (3) are fixedly connected by a first fixing bolt (5). The liner bodies (2) and the T-shaped insert plate (4) are integrally formed. The liner bodies (2) and the T-shaped fixing plate (3) are connected by a second fixing bolt (11).

2. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 1, characterized in that: The first plug-in assembly includes a first T-shaped plug (7) fixedly connected to one side of the liner body (2), and a first T-shaped slot (8) adapted to the first T-shaped plug (7) on the other side of the liner body (2).

3. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 1, characterized in that: The second plug-in assembly includes a second T-shaped plug (9) fixedly connected to a T-shaped plug plate (4), and a second T-shaped slot (10) adapted to the second T-shaped plug (9) on an inverted T-shaped fixing plate (3).

4. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 1, characterized in that: The liner body (2) includes a supporting base layer (21), a buffer layer (22) is provided on the inner side of the supporting base layer (21), a wear-resistant reinforcing layer (23) is provided on the inner side of the buffer layer (22), and a corrosion-resistant surface layer (24) is provided on the inner side of the wear-resistant reinforcing layer (23).

5. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 4, characterized in that: The supporting base layer (21) is a high-strength steel plate with a thickness of 8-12mm, and the buffer layer (22) is made of elastic rubber with a thickness of 4-6mm.

6. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 4, characterized in that: The wear-resistant reinforcing layer (23) is made of tungsten carbide coating with a thickness of 2-3 mm, and the corrosion-resistant surface layer (24) is made of polytetrafluoroethylene with a thickness of 1-2 mm.

7. The replaceable composite liner for a sulfur-producing catalyst mixing mill according to claim 1, characterized in that: The inner wall of the liner body (2) is provided with a number of stirring protrusions (6), which are triangular prisms with a height of 5-10mm.

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