Cement kiln body matching fastening device and layout method

Abstract

The application discloses a cement kiln body matched fastening device and a laying method, and relates to the technical field of kiln body fastening. The cement kiln body matched fastening device and the laying method have the advantages that the device can prevent loosening, is sealed, adopts multiple fastening, is self-locked, and is safe and reliable.

Description

Technical Field

[0001] This invention relates to the field of kiln body fastening technology, and in particular to a cement kiln body fastening device and its installation method. Background Technology

[0002] With the rapid development of technology and the continuous progress of society, the application of cement is becoming increasingly widespread. The cement kiln is the core equipment in cement production, mainly used for calcining cement clinker. The cement kiln is the main equipment in both dry and wet process cement clinker production lines. Cement raw materials undergo dehydration, drying, preheating, decomposition, calcination, and cooling stages within the kiln, reacting at a high temperature of approximately 1450℃ to ultimately form cement clinker.

[0003] Cement kiln bodies are typically assembled from multiple kiln sections. Due to the enormous size of cement rotary kilns, it is impossible to manufacture, transport, and install a single-piece kiln body. Therefore, the kiln is manufactured in sections, rolled and welded into several segments at the factory, and then assembled and welded on-site to form a complete kiln body. Each segment has a reasonable length within the constraints of installation and transportation.

[0004] Modern cement rotary kilns are assembled on-site from multiple sections, a standard engineering practice that facilitates manufacturing, transportation, installation, and maintenance. The kiln body itself is a steel cylinder, lined with various refractory materials to withstand high temperatures and chemical corrosion. The refractory materials used vary depending on the working environment of different parts of the kiln.

[0005] In the existing technology, the cement rotary kiln body can be fastened by using flanges and bolts at the ends of the rotary kiln body. However, this design is prone to loosening when the kiln body is rotating, resulting in an unstable fastening between the kiln bodies. This not only affects the normal operation of the cement rotary kiln body, but also poses a significant safety hazard. Summary of the Invention

[0006] To solve the above technical problems, the present invention is implemented through the following technical solution:

[0007] A fastening device for cement kiln bodies.

[0008] The matching fastening device consists of a pre-tightening mechanism and an anti-loosening mechanism;

[0009] The pre-tightening mechanism is used to connect and fix the steel cement kiln cylinder. The end of the cement kiln body at the connection position is equipped with a matching flange for docking. The pre-tightening mechanism is installed at the end flange of the cement kiln body at the connection position.

[0010] The anti-loosening mechanism is used to perform secondary fastening on the steel cement kiln cylinder and prevents loosening through self-locking. The anti-loosening mechanism is installed on the outside of the cement kiln body.

[0011] The anti-loosening mechanism includes a pre-embedded blind hole and an inverted T-shaped support. The pre-embedded blind hole is located on the side of the cement kiln body surface. The inverted T-shaped support is detachably fixed to the surface of the cement kiln body near the pre-embedded blind hole by anchor bolts. A strip-shaped opening is provided in the middle of the surface of the inverted T-shaped support. A limiting connector is slidably installed on the surface of the inverted T-shaped support through the strip-shaped opening. A circular hole is provided on the side of the surface of the limiting connector. A hexagonal head locking screw is installed inside the circular hole and passes through the center of the circular hole. A bent connecting piece is detachably fixed to the side of the surface of the inverted T-shaped support. A hexagonal sleeve is fixedly connected to the end of the bent connecting piece away from the inverted T-shaped support.

[0012] By tightening the hexagonal locking screw and supporting it with the inverted T-shaped support, the limiting connector moves towards the flange near the cement kiln body connection position. The flat end of the limiting connector fits against the flange surface at the cement kiln body connection position, and the limiting connector performs a limiting action, thus providing a secondary tightening of the cement kiln body connection. At the same time, the hexagonal sleeve, supported by the bent connecting piece, moves towards the end of the hexagonal bolt for subsequent self-locking.

[0013] Furthermore, the pre-embedded blind holes are evenly distributed on the sides of the cement kiln body surface, and the inverted T-shaped support is installed vertically and evenly distributed along the circumference of the cement kiln cylinder.

[0014] Relying on the linkage structure of the inverted T-shaped support base, limiting connector, hexagonal head locking screw and hexagonal sleeve, the hexagonal sleeve is fitted onto the end of the hexagonal bolt, limiting and locking the end of the hexagonal bolt to prevent the hexagonal bolt from unraveling. In conjunction with the pre-embedded fixing structure of the pre-embedded blind hole built-in anchor bolt, mechanical self-locking and anti-loosening are achieved. This solves the problem that traditional single bolt fastening methods are prone to bolt loosening, flange misalignment and increased cylinder connection gap under the harsh working conditions of cement kiln high temperature, heavy load and continuous vibration. It effectively avoids abnormal noise in kiln operation, cylinder misalignment and equipment shaking and other faults, greatly improves the overall stability and safety of cement kiln operation and extends the continuous operation cycle of equipment.

[0015] Furthermore, the limiting connector passes through the center of the slot, the surface of the limiting connector is in contact with the inner side of the slot, and the hexagonal head locking screw is installed horizontally.

[0016] Furthermore, the pre-tightening mechanism includes a first sealing gasket and a second sealing gasket. Both the first and second sealing gaskets are installed at the end face of the cement kiln body connection position. A flexible ring is fixedly connected to the edge of the surface of the first sealing gasket. Both the surface of the first and second sealing gaskets have connecting holes. An annular groove is formed on the outer side of the second sealing gasket near the flexible ring. Auxiliary components are installed on the surface of the first and second sealing gaskets near the port position of the cement kiln body connection position. A hexagonal bolt is installed between the first and second sealing gaskets. The hexagonal sleeve is fitted onto the hexagonal heads at both ends of the hexagonal bolt. The first and second sealing gaskets are installed at the end flange of the cement kiln body connection position, and together with the hexagonal bolt, the initial connection and pre-tightening of the end face of the steel cylinder flange of the cement kiln is completed, realizing the precise splicing and positioning of the cylinder. The double sealing gasket composed of the first and second sealing gaskets, together with the flexible ring and the annular groove, are precisely nested and fitted together to form multiple seals, ensuring uniform sealing without dead corners and preventing leakage.

[0017] Furthermore, the first sealing ring and the second sealing ring are installed at the same height, and the connecting holes are evenly distributed on the surface of the first sealing ring and the surface of the second sealing ring.

[0018] Furthermore, the outer side of the flexible ring is fitted with the inner side of the annular groove, the flexible ring and the first sealing gasket are concentric circles, and the annular groove and the second sealing gasket are concentric circles.

[0019] Furthermore, the auxiliary component includes a limiting cylinder, which is fixedly installed on the surface of the first sealing gasket ring and near the connection hole. A sealing ring is fixedly connected to the inner side of the limiting cylinder, and a circular wear-resistant pad is fixedly connected to the inner ring of the sealing ring. The hexagonal bolt passes through the center of the connection hole and the center of the circular wear-resistant pad. A metal reinforcing ring is fixedly connected to the center of the sealing ring. By inserting the limiting cylinder into the flange hole at the connection position of the cement kiln body, the first and second sealing gasket rings can be positioned to prevent them from shifting. At the same time, the combined structure of the limiting cylinder, sealing ring, and circular wear-resistant pad provides local sealing protection for the bolt connection position of the hexagonal bolt, fills the gap between the hexagonal bolt and the limiting cylinder, and forms an integral sealing system to prevent leakage from the hexagonal bolt. The metal reinforcing ring inside the sealing ring increases the strength of the sealing ring itself, and the circular wear-resistant pad provides wear protection for the sealing ring, extending its service life.

[0020] Furthermore, the limiting cylinders are evenly distributed along the circumference of the first sealing gasket ring, and the axis of the limiting cylinders coincides with the axis of the connecting hole. The limiting cylinders are inserted into the flange holes at the cement kiln body connection position and are fitted onto the ends of the hexagonal bolts through hexagonal sleeves. In conjunction with the limiting connector and the limiting locking structure of the hexagonal head locking screw, combined with the fixed support of the pre-embedded anchor bolts, a purely mechanical rigid self-locking anti-loosening structure is formed. It does not rely on elastic gaskets, adhesive layers, or other easily aging anti-loosening media. Under the long-term high-temperature operation and high-frequency vibration conditions of the cement kiln, the anti-loosening structure will not fail. The anti-loosening performance is durable and stable, fundamentally solving the industry problem of poor adaptability of traditional fastening structures and repeated repairs due to loosening in the later stages, and greatly improving the stability and service life of cement kiln equipment.

[0021] A method for fastening and assembling cement kiln bodies includes the following steps:

[0022] Step 1: Drill holes in the surface of the flange to create flange holes, and weld the ends of the steel cylindrical body to complete the flange, thus obtaining the cement kiln cylinder.

[0023] Step 2: Make a pre-embedded blind hole on the outer circular surface of the cement kiln cylinder obtained in Step 1, near the flange, and pre-embed foundation connectors in the pre-embedded blind hole;

[0024] Step 3: Install the pre-tightening mechanism through the flange hole at the flange position at the end of the cement kiln shell, and use the pre-tightening mechanism to splice and install the cement kiln shell;

[0025] Step 4: Based on Step 3, an anti-loosening mechanism is installed on the surface of the cement kiln shell using the pre-embedded foundation connectors to further fix and lock the spliced ​​cement kiln shells.

[0026] By pre-drilling blind holes and grouting the pre-embedded anchor bolts, the base of the anti-loosening mechanism is stably embedded. Then, the pre-tightening mechanism is assembled and the anti-loosening mechanism is locked in the second stage. There is no need to open holes on site. The construction process is standardized and easy to implement on site. Moreover, the use of detachable bolt connection eliminates the need for welding to fix the subsequent fastening structure. This not only reduces the difficulty of on-site construction and shortens the construction cycle, but also facilitates the later equipment inspection, parts replacement and device maintenance.

[0027] Step 5: Compare with the construction drawings and inspect the connection between the pre-tightening mechanism and the cement kiln shell. Also inspect the connection between the anti-loosening mechanism and the cement kiln shell. After construction, the assembly status of the pre-tightening mechanism and the anti-loosening mechanism can be independently inspected and inspected to facilitate timely identification of assembly hazards, ensure construction quality, and guarantee the reliability of cement kiln shell fastening from the source of construction, thus adapting to the installation and modification construction needs of industrial-scale cement kiln equipment.

[0028] Furthermore, the pre-embedded foundation connector is an anchor bolt. The end of the anchor bolt away from the external thread is inserted into the interior of the pre-embedded blind hole, and the center line of the anchor bolt coincides with the center axis of the pre-embedded blind hole. Grout is injected into the pre-embedded blind hole so that the grout fills the interior of the pre-embedded blind hole, and the end of the anchor bolt is in full contact with the grout. After the grout has completely solidified, the anchor bolt is pre-embedded and fixed.

[0029] The beneficial effects of the technical solution provided by this invention include:

[0030] 1. By pre-drilling blind holes and grouting the pre-embedded anchor bolts, the base of the anti-loosening mechanism is stably embedded. Then, the pre-tightening mechanism is assembled and the anti-loosening mechanism is locked in the second stage. There is no need to open holes on site. The construction process is standardized and easy to implement on site. Moreover, the use of detachable bolt connection eliminates the need for welding to fix the subsequent fastening structure. This not only reduces the difficulty of on-site construction and shortens the construction cycle, but also facilitates the later equipment inspection, parts replacement and device maintenance.

[0031] Second, after construction, the assembly status of the pre-tightening mechanism and the anti-loosening mechanism can be independently inspected and accepted, which facilitates timely identification of assembly hazards, ensures construction quality, guarantees the reliability of cement kiln body fastening from the source of construction, and adapts to the installation and renovation construction needs of industrial-scale cement kiln equipment.

[0032] Third, the first and second sealing gaskets are installed at the end flange of the cement kiln body connection position, and the initial connection and pre-tightening of the steel cylindrical flange end face of the cement kiln is completed with hexagonal bolts to achieve precise splicing and positioning of the cylinder. The double sealing gaskets composed of the first and second sealing gaskets are precisely nested and fitted together with the flexible ring and the annular groove to form multiple seals, ensuring uniform sealing without dead corners and preventing leakage.

[0033] Fourth, by inserting the limiting cylinder into the flange hole at the connection position of the cement kiln body, the first and second sealing gaskets can be positioned to prevent them from shifting. At the same time, the combination structure of the limiting cylinder, sealing ring and circular wear-resistant pad provides local sealing protection for the bolt connection position of the hexagonal bolt, fills the gap between the hexagonal bolt and the limiting cylinder, and forms an integral sealing system.

[0034] 5. By tightening the hexagonal head locking screw and supporting the inverted T-shaped support, the limiting connector moves towards the flange near the cement kiln body connection position. The flat end of the limiting connector fits against the flange surface at the cement kiln body connection position, and the limiting connector performs a limiting action, thus providing a secondary tightening of the cement kiln body connection. At the same time, the hexagonal sleeve, supported by the bent connecting piece, moves towards the end of the hexagonal bolt for subsequent self-locking.

[0035] VI. Relying on the linkage structure of the inverted T-shaped support base, limiting connector, hexagonal head locking screw and hexagonal sleeve, the hexagonal sleeve is fitted onto the end of the hexagonal bolt, limiting and locking the end of the hexagonal bolt to prevent the hexagonal bolt from unraveling. In conjunction with the pre-embedded fixing structure of the pre-embedded blind hole built-in anchor bolt, mechanical self-locking and anti-loosening are achieved. This solves the problem that traditional single bolt fastening methods are prone to bolt loosening, flange misalignment and increased cylinder connection gap under the harsh working conditions of high temperature, heavy load and continuous vibration in cement kilns. It effectively avoids abnormal noise in kiln operation, cylinder misalignment and equipment shaking and other faults, greatly improves the overall stability and safety of cement kiln operation and extends the continuous operation cycle of equipment. Attached Figure Description

[0036] Figure 1 A block diagram illustrating a method for fastening and arranging cement kiln bodies according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure of a cement kiln body fastening device provided in an embodiment of the present invention;

[0038] Figure 3 This is a bottom view schematic diagram of a cement kiln body fastening device provided in an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the connection structure between the anti-loosening mechanism and the cement kiln body provided in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the overall structure of the anti-loosening mechanism provided in an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the connection structure between the limiting connector and the inverted T-shaped support base provided in an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of the connection structure between the pre-tightening mechanism and the cement kiln cylinder provided in an embodiment of the present invention;

[0043] Figure 8 This is a schematic diagram of the connection structure between the auxiliary component and the sealing gasket ring provided in an embodiment of the present invention;

[0044] Figure 9 This is a schematic diagram of the internal structure of the auxiliary component and the first sealing ring cross-section provided in an embodiment of the present invention;

[0045] Figure 10 Provided for embodiments of the present invention Figure 9 Enlarged view of a portion of point A in the middle.

[0046] In the diagram: 1. Pre-tightening mechanism; 2. Anti-loosening mechanism; 11. First sealing gasket ring; 12. Second sealing gasket ring; 13. Flexible ring; 14. Connecting hole; 15. Annular groove; 16. Auxiliary component; 17. Hex bolt; 161. Limiting sleeve; 162. Sealing ring; 163. Circular wear-resistant pad; 164. Metal reinforcing ring; 21. Embedded blind hole; 22. Inverted T-shaped support seat; 23. Strip opening; 24. Limiting connector; 25. Round hole; 26. Hexagonal head locking screw; 27. Bent connecting piece; 28. Hexagonal sleeve. Detailed Implementation

[0047] Example 1, see Figures 1-6 A technical solution is provided:

[0048] A fastening device for cement kiln bodies.

[0049] The fastening device consists of a pre-tightening mechanism 1 and an anti-loosening mechanism 2;

[0050] The pre-tightening mechanism 1 is used to connect and fix the steel cement kiln cylinder. The end of the cement kiln body connection position is equipped with a matching flange. The pre-tightening mechanism 1 is installed at the end flange of the cement kiln body connection position.

[0051] The anti-loosening mechanism 2 is used to perform secondary fastening on the steel cement kiln cylinder and prevents loosening through self-locking. The anti-loosening mechanism 2 is installed on the outside of the cement kiln body.

[0052] The anti-loosening mechanism 2 includes a pre-embedded blind hole 21 and an inverted T-shaped support 22. The pre-embedded blind hole 21 is opened on the side of the surface of the cement kiln body. The inverted T-shaped support 22 is detachably fixed to the surface of the cement kiln body and close to the pre-embedded blind hole 21 by anchor bolts. A strip-shaped opening 23 is opened in the middle of the surface of the inverted T-shaped support 22. A limiting connector 24 is slidably installed on the surface of the inverted T-shaped support 22 through the strip-shaped opening 23. A round hole 25 is opened on the side of the surface of the limiting connector 24. A hexagonal head locking screw 26 is installed inside the round hole 25. The hexagonal head locking screw 26 passes through the center of the round hole 25. A bent connecting piece 27 is detachably fixed to the side of the surface of the inverted T-shaped support 22. A hexagonal sleeve 28 is fixedly connected to the end of the bent connecting piece 27 away from the inverted T-shaped support 22.

[0053] By tightening the hexagonal head locking screw 26 and supporting it with the inverted T-shaped support seat 22, the limiting connector 24 moves towards the flange near the cement kiln body connection position. The flat surface at the end of the limiting connector 24 fits against the flange surface at the cement kiln body connection position, and the limiting connector 24 limits the connection, thus achieving secondary tightening of the cement kiln body connection. At the same time, the hexagonal sleeve 28, supported by the bent connecting piece 27, moves towards the end of the hexagonal bolt 17 for subsequent self-locking.

[0054] Pre-embedded blind holes 21 are evenly distributed on the sides of the cement kiln body surface, and inverted T-shaped support seats 22 are installed vertically and evenly distributed along the circumference of the cement kiln cylinder.

[0055] The limiting connector 24 passes through the center of the slot 23, and the surface of the limiting connector 24 fits against the inner side of the slot 23. The hexagonal head locking screw 26 is installed horizontally.

[0056] Example 2, based on Example 1, see [link / reference] Figures 1 to 10 A technical solution is provided:

[0057] The pre-tightening mechanism 1 includes a first sealing gasket 11 and a second sealing gasket 12. Both the first sealing gasket 11 and the second sealing gasket 12 are installed at the end face of the cement kiln body connection position. A flexible ring 13 is fixedly connected to the edge of the surface of the first sealing gasket 11. Connection holes 14 are formed on the surfaces of both the first sealing gasket 11 and the second sealing gasket 12. An annular groove 15 is formed on the outer side of the second sealing gasket 12 near the flexible ring 13. Auxiliary components 16 are installed on the surfaces of both the first sealing gasket 11 and the second sealing gasket 12 near the port position of the cement kiln body connection position. Hexagonal bolts 17 are installed between the sealing gaskets 12. Hexagonal sleeves 28 are fitted onto the hexagonal heads at both ends of the outer side of the hexagonal bolts 17. The first sealing gasket 11 and the second sealing gasket 12 are installed at the end flange of the cement kiln body connection position. The hexagonal bolts 17 are used to complete the initial pre-tightening of the flange end face of the steel cylinder body of the cement kiln, so as to achieve precise splicing and positioning of the cylinder body. The double sealing gaskets composed of the first sealing gasket 11 and the second sealing gasket 12 are used together with the flexible ring 13 and the annular groove 15 to form a multiple seal, ensuring uniform sealing without dead corners and preventing leakage.

[0058] The first sealing ring 11 and the second sealing ring 12 are installed at the same height, and the connecting holes 14 are evenly distributed on the surface of the first sealing ring 11 and the surface of the second sealing ring 12.

[0059] The outer side of the flexible ring 13 fits against the inner side of the annular groove 15. The flexible ring 13 and the first sealing gasket ring 11 are concentric circles, and the annular groove 15 and the second sealing gasket ring 12 are concentric circles.

[0060] Auxiliary component 16 includes a limiting cylinder 161, which is fixedly installed on the surface of the first sealing gasket 11 near the connecting hole 14. A sealing ring 162 is fixedly connected to the inner side of the limiting cylinder 161, and a circular wear-resistant pad 163 is fixedly connected to the inner ring of the sealing ring 162. A hexagonal bolt 17 passes through the center of the connecting hole 14 and the center of the circular wear-resistant pad 163. A metal reinforcing ring 164 is fixedly connected to the center of the sealing ring 162. By inserting the limiting cylinder 161 into the flange hole at the cement kiln body connection position, the first sealing gasket 11 and the second sealing gasket 12 can be positioned. The positioning system prevents the first sealing ring 11 and the second sealing ring 12 from shifting. At the same time, the combined structure of the limiting cylinder 161, the sealing ring 162, and the circular wear-resistant pad 163 provides local sealing protection for the bolt connection position of the hexagonal bolt 17, fills the gap between the hexagonal bolt 17 and the limiting cylinder 161, and forms an integral sealing system to prevent leakage from the hexagonal bolt 17. In addition, the sealing ring 162 has a metal reinforcing ring 164 inside, which can increase the strength of the sealing ring 162 itself, and the circular wear-resistant pad 163 provides wear-resistant protection for the sealing ring 162, extending the service life of the sealing ring 162.

[0061] The limiting cylinders 161 are evenly distributed along the circumference of the first sealing gasket ring 11. The axis of the limiting cylinders 161 coincides with the axis of the connecting hole 14. The limiting cylinders 161 are inserted into the flange hole at the cement kiln body connection position.

[0062] Example 3, based on Examples 1 and 2, see below. Figures 1 to 10 A technical solution is provided:

[0063] A method for fastening and assembling cement kiln bodies includes the following steps:

[0064] Step 1: Drill holes in the surface of the flange to create flange holes, and weld the ends of the steel cylindrical body to complete the flange, thus obtaining the cement kiln cylinder.

[0065] Step 2: Open a pre-embedded blind hole 21 on the outer circular surface of the cement kiln cylinder obtained in Step 1, near the flange, and pre-embed foundation connectors in the pre-embedded blind hole 21.

[0066] Step 3: Install the pre-tightening mechanism 1 through the flange hole at the flange position at the end of the cement kiln shell, and use the pre-tightening mechanism 1 to splice and install the cement kiln shell;

[0067] Step 4: Based on Step 3, an anti-loosening mechanism 2 is installed on the surface of the cement kiln shell using the pre-embedded foundation connectors to fix and lock the cement kiln shells that are spliced ​​together.

[0068] Step 5: Check and accept the connection between the pre-tightening mechanism 1 and the cement kiln shell according to the construction drawings, and check and accept the connection between the anti-loosening mechanism 2 and the cement kiln shell.

[0069] The pre-embedded foundation connector is an anchor bolt. The end of the anchor bolt away from the external thread is inserted into the pre-embedded blind hole 21, and the center line of the anchor bolt coincides with the center axis of the pre-embedded blind hole 21. Grout is injected into the pre-embedded blind hole 21 so that the grout fills the interior of the pre-embedded blind hole 21. The end of the anchor bolt is in full contact with the grout. Wait for the grout to solidify completely and then pre-embed and fix the anchor bolt.

[0070] When in use, the flange hole is drilled on the surface of the flange and the end of the steel cylinder is welded to obtain the cement kiln shell. A pre-embedded blind hole 21 is opened on the outer circular surface of the cement kiln shell obtained in step one and close to the flange. The foundation connector is pre-embedded in the pre-embedded blind hole 21.

[0071] The end of the anchor bolt away from the external thread is inserted into the pre-embedded blind hole 21, and the center line of the anchor bolt coincides with the center axis of the pre-embedded blind hole 21. Grout is injected into the pre-embedded blind hole 21 so that the grout fills the interior of the pre-embedded blind hole 21. The end of the anchor bolt is in full contact with the grout. Wait for the grout to solidify completely and then pre-embed and fix the anchor bolt.

[0072] Pre-tightening mechanism 1 is installed at the flange position at the end of the cement kiln shell through the flange hole, and the cement kiln shell is spliced ​​and installed through pre-tightening mechanism 1.

[0073] By pre-drilling blind holes 21 and grouting the pre-embedded anchor bolts, the base of the anti-loosening mechanism is stably pre-embedded. Then, the pre-tightening mechanism 1 is assembled and the anti-loosening mechanism 2 is locked in a second time. There is no need to go to the site to drill holes. The construction process is standardized and it is easy to implement on site.

[0074] The first sealing gasket 11 and the second sealing gasket 12 are installed at the end flange of the cement kiln body connection position, and the initial connection and pre-tightening of the end face of the steel cylinder flange of the cement kiln is completed with the help of hexagonal bolts 17, so as to achieve precise splicing and positioning of the cylinder. The double sealing gasket composed of the first sealing gasket 11 and the second sealing gasket 12, together with the flexible ring 13 and the annular groove 15, are precisely nested and fitted together to form multiple seals, ensuring uniform sealing without dead corners and preventing leakage.

[0075] Furthermore, based on step three, an anti-loosening mechanism 2 is installed on the surface of the cement kiln shell using the pre-embedded foundation connectors to further fix and lock the spliced ​​cement kiln shells.

[0076] By tightening the hexagonal head locking screw 26 and supporting it with the inverted T-shaped support seat 22, the limiting connector 24 moves towards the flange near the cement kiln body connection position. The flat surface at the end of the limiting connector 24 fits against the flange surface at the cement kiln body connection position, and the limiting connector 24 limits the connection, thus achieving secondary tightening of the cement kiln body connection. At the same time, the hexagonal sleeve 28, supported by the bent connecting piece 27, moves towards the end of the hexagonal bolt 17 for subsequent self-locking.

[0077] Simultaneously, by inserting the limiting cylinder 161 into the flange hole at the cement kiln body connection position, the first sealing ring 11 and the second sealing ring 12 can be positioned to prevent the first sealing ring 11 and the second sealing ring 12 from shifting. At the same time, the combined structure of the limiting cylinder 161, the sealing ring 162 and the circular wear-resistant pad 163 provides local sealing protection for the bolt connection position of the hexagonal bolt 17, fills the gap between the hexagonal bolt 17 and the limiting cylinder 161, and forms an integral sealing system to prevent leakage from the hexagonal bolt 17. In addition, the sealing ring 162 has a metal reinforcing ring 164 inside, which can increase the strength of the sealing ring 162 itself, and the circular wear-resistant pad 163 provides wear-resistant protection for the sealing ring 162, extending the service life of the sealing ring 162.

[0078] According to the construction drawings, inspect and accept the connection between the pre-tightening mechanism 1 and the cement kiln shell, and inspect and accept the connection between the anti-loosening mechanism 2 and the cement kiln shell. At the same time, after construction, the assembly status of the pre-tightening mechanism 1 and the anti-loosening mechanism 2 can be independently inspected and accepted, which facilitates timely identification of assembly hazards, ensures construction quality, and guarantees the reliability of cement kiln shell fastening from the source of construction, adapting to the installation and modification construction needs of industrial-scale cement kiln equipment.

[0079] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. The scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A fastening device for a cement kiln body, characterized in that, The matching fastening device consists of a pre-tightening mechanism (1) and an anti-loosening mechanism (2); The pre-tightening mechanism (1) is used to connect and fix the steel cement kiln cylinder. The end of the cement kiln body connection position is equipped with a matching flange for docking. The pre-tightening mechanism (1) is installed at the end flange of the cement kiln body connection position. The anti-loosening mechanism (2) is used to tighten the steel cement kiln cylinder body for a second time and to prevent loosening through self-locking. The anti-loosening mechanism (2) is installed on the outside of the cement kiln body. The anti-loosening mechanism (2) includes a pre-embedded blind hole (21) and an inverted T-shaped support (22). The pre-embedded blind hole (21) is opened on the side of the surface of the cement kiln body. The inverted T-shaped support (22) is detachably fixed to the surface of the cement kiln body and close to the pre-embedded blind hole (21) by anchor bolts. A strip-shaped opening (23) is opened in the middle of the surface of the inverted T-shaped support (22). A limit connector is slidably installed on the surface of the inverted T-shaped support (22) through the strip-shaped opening (23). (24) A circular hole (25) is provided on the side of the surface of the limiting connector (24). A hexagonal head locking screw (26) is installed inside the circular hole (25). The hexagonal head locking screw (26) passes through the center of the circular hole (25). A bent connecting piece (27) is detachably fixed on the side of the surface of the inverted T-shaped support (22). A hexagonal sleeve (28) is fixedly connected to the end of the bent connecting piece (27) away from the inverted T-shaped support (22).

2. The cement kiln body fastening device according to claim 1, characterized in that: The pre-embedded blind holes (21) are evenly distributed on the side of the cement kiln body surface, and the inverted T-shaped support (22) is installed vertically and evenly distributed along the circumference of the cement kiln cylinder.

3. The cement kiln body fastening device according to claim 1, characterized in that: The limiting connector (24) passes through the center of the slot (23), the surface of the limiting connector (24) is in contact with the inner side of the slot (23), and the hexagonal head locking screw (26) is installed horizontally.

4. The cement kiln body fastening device according to claim 1, characterized in that: The pre-tightening mechanism (1) includes a first sealing gasket (11) and a second sealing gasket (12). The first sealing gasket (11) and the second sealing gasket (12) are both installed at the end face of the cement kiln body connection position. A flexible ring (13) is fixedly connected to the edge of the surface of the first sealing gasket (11). A connection hole (14) is opened on the surface of the first sealing gasket (11) and the surface of the second sealing gasket (12). An annular groove (15) is opened on the outer side of the second sealing gasket (12) and near the flexible ring (13). An auxiliary component (16) is installed on the surface of the first sealing gasket (11) and the surface of the second sealing gasket (12) and near the port position of the cement kiln body connection position. A hexagonal bolt (17) is installed between the first sealing gasket (11) and the second sealing gasket (12). The hexagonal sleeve (28) is sleeved on the hexagonal head at both ends of the hexagonal bolt (17).

5. A cement kiln body fastening device according to claim 4, characterized in that: The first sealing ring (11) and the second sealing ring (12) are installed at the same height, and the connecting holes (14) are evenly distributed on the surface of the first sealing ring (11) and the surface of the second sealing ring (12).

6. A cement kiln body fastening device according to claim 4, characterized in that: The outer side of the flexible ring (13) is fitted with the inner side of the annular groove (15). The flexible ring (13) and the first sealing gasket (11) are concentric circles, and the annular groove (15) and the second sealing gasket (12) are concentric circles.

7. A cement kiln body fastening device according to claim 4, characterized in that: The auxiliary component (16) includes a limiting cylinder (161), which is fixedly installed on the surface of the first sealing gasket ring (11) and close to the connecting hole (14). A sealing ring (162) is fixedly connected to the inner side of the limiting cylinder (161), and a circular wear-resistant pad (163) is fixedly connected to the inner ring of the sealing ring (162). The hexagonal bolt (17) passes through the center of the connecting hole (14) and the center of the circular wear-resistant pad (163). A metal reinforcing ring (164) is fixedly connected to the center of the sealing ring (162).

8. A cement kiln body fastening device according to claim 7, characterized in that: The limiting cylinder (161) is evenly distributed along the circumference of the first sealing gasket ring (11), and the axis of the limiting cylinder (161) coincides with the axis of the connecting hole (14).

9. A method for fastening and assembling a cement kiln body, implemented based on a cement kiln body fastening device as described in any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Drill holes in the surface of the flange to create flange holes, and weld the ends of the steel cylindrical body to complete the flange, thus obtaining the cement kiln cylinder. Step 2: Open a pre-embedded blind hole (21) on the outer circular surface of the cement kiln cylinder obtained in Step 1 and near the flange, and pre-embed foundation connectors in the pre-embedded blind hole (21); Step 3: Install the pre-tightening mechanism (1) through the flange hole at the flange position at the end of the cement kiln shell, and splice and install the cement kiln shell through the pre-tightening mechanism (1); Step 4: Based on Step 3, an anti-loosening mechanism (2) is installed on the surface of the cement kiln shell using the pre-embedded foundation connectors to fix and lock the cement kiln shells that are spliced ​​together again. Step 5: Check and accept the connection of the pre-tightening mechanism (1) to the cement kiln body according to the construction drawings, and check and accept the connection of the anti-loosening mechanism (2) to the cement kiln body.

10. A method for fastening and arranging cement kiln body components according to claim 9, characterized in that: The pre-embedded foundation connector is an anchor bolt. The end of the anchor bolt away from the external thread is inserted into the interior of the pre-embedded blind hole (21), and the center line of the anchor bolt coincides with the center axis of the pre-embedded blind hole (21). Grout is injected into the pre-embedded blind hole (21) so that the grout fills the interior of the pre-embedded blind hole (21). The end of the anchor bolt is in full contact with the grout. Wait for the grout to solidify completely and pre-embed the anchor bolt.

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