Thickened inner cylinder of a cement preheater

Abstract

The application relates to the technical field of cement production devices, and discloses a thickened inner cylinder of a cement preheater, which comprises a reinforcing plate and a cylinder body, the reinforcing plate is arranged in the cylinder body, and the reinforcing plate is spliced by multiple thickened plates. The thickened inner cylinder of the cement preheater can realize tool-free quick installation of the reinforcing plate through the sleeve, the stabilizing rod, the clamping block and the clamping groove, the connecting spring ensures the stability of the clamping force, the high-temperature vibration environment is adapted, the installation time is shortened, the shock resistance is improved, the loosening risk of traditional welding and bolts is avoided, the corrugated concave-convex plate is arranged, the corrugated structure increases the surface area of the reinforcing plate, the castable is embedded in the corrugated gap, the mechanical bite strength is improved, the outer high-temperature-resistant alloy is designed, direct contact with high temperature and corrosive medium is realized, the anti-oxidation, sulfur and alkali corrosion resistance is provided, the inner carbon steel is designed, the structural strength can be ensured, and the cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of cement production equipment, specifically a thickened cement preheater inner cylinder. Background Technology

[0002] The production of cement generates a large amount of heat. In order to save energy and improve production efficiency, a preheater is installed at the kiln tail of the cement kiln. The high-temperature exhaust gas from the kiln can be used to preheat the cement raw materials, which can effectively improve the efficiency of cement processing.

[0003] An existing patent (publication number: CN222598520U) discloses a thickened cement preheater inner cylinder, belonging to the technical field of cement production equipment. It includes a reinforcing plate and castable refractory, the castable refractory being used to completely cover the reinforcing plate; the reinforcing plate is composed of several thickened plates and ordinary plates spliced ​​together; the thickness of the thickened plate is greater than the thickness of the ordinary plate. This utility model's inner cylinder includes a reinforcing plate, which is assembled from thickened plates and ordinary plates, ensuring the strength of the upper part of the inner cylinder and moderately increasing the overall weight of the inner cylinder; in addition to splicing recesses and splicing protrusions, the side of the reinforcing plate is also provided with fastening components for further fixing the reinforcing plate and increasing its overall strength.

[0004] Although the device in the aforementioned comparative document solves the problem that the spot welding between individual plates causes stress at the weld points due to thermal expansion and contraction of the heat-resistant steel under long-term high temperature, alkaline vapor, sulfur vapor, and high-speed scouring of powder, resulting in weld point damage, the device uses bolts to fix the reinforcing plate to the cylinder. The bolts need to be tightened manually, which is time-consuming and labor-intensive. In order to solve the above problems, a thickened inner cylinder of the cement preheater is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a thickened cement preheater inner cylinder with a snap-lock structure, which eliminates the need for additional tools for tightening and shortens installation time. This solves the problem of time-consuming and labor-intensive operation when using bolts to fix the reinforcing plate to the cylinder.

[0006] To achieve the above objectives, this application provides the following technical solution: a thickened cement preheater inner cylinder, comprising a reinforcing plate and a cylinder body, wherein the reinforcing plate is located inside the cylinder body and is composed of multiple thickened plates spliced ​​together;

[0007] The thickened plate has a through hole inside, and multiple sleeves are provided on the inner side of the cylinder. A stabilizing rod is inserted through the sleeve and the through hole. L-shaped movable grooves are provided on opposite sides inside the sleeves. A connecting spring is fixedly connected to the inner side of the L-shaped movable groove. A toggle block is fixedly connected to one end of the connecting spring. A through hole is provided on the side of the L-shaped movable groove. The toggle block is slidably connected in the through hole. A connecting plate is fixedly connected to the side of the toggle block. A locking block is fixedly connected to the side of the connecting plate. The locking block is locked in a locking groove. A corrugated convex and concave plate is fixedly connected to the back of the thickened plate.

[0008] The above solution, through the use of sleeves, stabilizing rods, locking blocks, and locking slots, enables tool-free and rapid installation of the reinforcing plate. The connecting spring ensures stable clamping force, adapts to high-temperature and vibration environments, shortens installation time, improves seismic resistance, and avoids the loosening risks associated with traditional welding and bolts. By setting corrugated convex and concave plates, the corrugated structure increases the surface area of ​​the reinforcing plate, allowing the castable refractory to embed into the corrugated gaps, thus improving mechanical interlocking strength. The outer layer of high-temperature resistant alloy is designed to directly contact high-temperature and corrosive media, providing resistance to oxidation, sulfur, and alkali corrosion. The inner layer of carbon steel ensures structural strength while reducing costs. The combination of the outer high-performance alloy and the inner economical material balances durability and economy.

[0009] Furthermore, a guide pipe is provided inside the thickened plate, and a first connecting pipe and a second connecting pipe are provided on the top of the thickened plate.

[0010] The above solution utilizes a flow guide pipe embedded in the thickened plate to circulate the cooling medium, thereby reducing the risk of localized overheating.

[0011] Furthermore, the first connecting pipe input end is fixedly connected to the guide pipe output end, the second connecting pipe output end is fixedly connected to the guide pipe input end, and a connecting horizontal pipe is fixedly connected between the first connecting pipe output end on the top of one thickened plate and the second connecting pipe input end on the top of another thickened plate.

[0012] The above scheme, through the cooperation of the first connecting pipe, the second connecting pipe and the connecting horizontal pipe, can connect the guide pipes of multiple thickened plates in series to form a closed-loop cooling system and dissipate heat evenly.

[0013] Furthermore, a return pipe is fixedly connected to the output end of the first connecting pipe at the top of one of the thickened plates, and an inlet pipe is fixedly connected to the input end of the second connecting pipe at the top of the other thickened plate.

[0014] The above solution allows for connection to an external cooling system via a return pipe and an inlet pipe, enabling media input and output.

[0015] Furthermore, a guide plate is fixedly connected to the side of the thickened plate, and the guide plate is located at the splicing point of the two thickened plates.

[0016] The above solution, by setting a guide plate at the splicing seam, can guide airflow or materials to flow along a specific path, which can reduce direct erosion at the joint.

[0017] Furthermore, the thickened plate has multiple convex and concave splicing parts on both sides, and the concave splicing part on one side of the thickened plate is adapted to the convex splicing part of the adjacent plate.

[0018] The above solution, which combines the mortise and tenon joints of the convex and concave splicing parts, ensures splicing accuracy, increases the friction of the contact surface, prevents misalignment, and simplifies the installation process through modular design.

[0019] Furthermore, a high-temperature resistant elastic gasket is provided at the joint of the two thickened plates.

[0020] The above solution uses high-temperature resistant elastic gaskets to fill the joint gaps, which can seal and prevent leakage. At the same time, the elastic material can compensate for differences in thermal deformation and avoid stress concentration.

[0021] Furthermore, a connecting piece is provided on the side of the joint between the two thickened plates, and the connecting piece is connected to the two thickened plates by connecting bolts.

[0022] The above solution connects the connecting plate to the two thickened plates using connecting bolts, forming a double fixation with the convex-concave splice, improving vibration resistance and facilitating local replacement and maintenance.

[0023] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0024] This thickened cement preheater inner cylinder, through the installation of sleeves, stabilizing rods, locking blocks, and locking slots, enables tool-free and rapid installation of reinforcing plates. Connecting springs ensure stable clamping force, adapting to high-temperature and vibration environments, shortening installation time, improving seismic resistance, and avoiding the loosening risks associated with traditional welding and bolting. The corrugated concave-convex plates increase the surface area of ​​the reinforcing plates, allowing the castable refractory to embed into the corrugated gaps, thus enhancing mechanical interlocking strength. The outer layer, made of high-temperature resistant alloy, directly contacts high-temperature and corrosive media, providing resistance to oxidation, sulfur, and alkali corrosion. The inner carbon steel layer ensures structural strength while reducing costs. The combination of the high-performance outer alloy and the economical inner material balances durability and economy. Attached Figure Description

[0025] Figure 1 This is a frontal three-dimensional structural diagram of this application;

[0026] Figure 2This is a side-view perspective three-dimensional structural diagram of this application;

[0027] Figure 3 This is a schematic diagram of the structure in the side cross-section of this application;

[0028] Figure 4 This is a schematic diagram of the high-temperature resistant elastic gasket in this application;

[0029] Figure 5 for Figure 3 Enlarged structural diagram at point A in the middle.

[0030] In the picture:

[0031] 1. Reinforcing plate; 101. Thickened plate; 102. Protruding splice; 103. Guide plate; 104. Corrugated concave-convex plate; 105. First connecting pipe; 106. Second connecting pipe; 107. Guide pipe; 108. Through hole; 109. Recessed splice;

[0032] 2. Cylinder body; 201. Sleeve; 202. L-shaped movable groove; 203. Through hole; 204. Connecting spring; 205. Actuating block; 206. Connecting plate; 207. Locking block;

[0033] 3. Stabilizing rod; 301. Slot;

[0034] 4. High-temperature resistant elastic gasket;

[0035] 5. Connecting piece;

[0036] 6. Connect the horizontal tubes;

[0037] 7. Liquid inlet pipe;

[0038] 8. Return pipe. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Please see Figure 1 In this embodiment, a thickened cement preheater inner cylinder includes a reinforcing plate 1 and a cylinder 2. The reinforcing plate 1 is located inside the cylinder 2 and is composed of multiple thickened plates 101 spliced ​​together.

[0041] The thickened plate 101 has a through hole 108 inside. Multiple sleeves 201 are provided on the inner side of the cylinder 2. A stabilizing rod 3 passes through the sleeves 201 and the through hole 108. L-shaped movable grooves 202 are provided on opposite sides inside the sleeves 201. A connecting spring 204 is fixedly connected to the inner side of the L-shaped movable groove 202. A toggle block 205 is fixedly connected to one end of the connecting spring 204. A through hole 203 is provided on the side of the L-shaped movable groove 202. The toggle block 205 is slidably connected to the through hole 203. A connecting plate 206 is fixedly connected to the side of the toggle block 205. A locking block 207 is fixedly connected to the side of the connecting plate 206. The locking block 207 is engaged in a slot 301. A corrugated convex-concave plate 104 is fixedly connected to the back of the thickened plate 101. The thickened plate 101 adopts a double-layer composite design. The outer layer of plate 101 is made of high-temperature resistant alloy, while the inner layer of the thickened plate 101 is made of carbon steel. By setting up sleeve 201, stabilizing rod 3, locking block 207 and locking groove 301, tool-free quick installation of the reinforcing plate 1 can be achieved. The connecting spring 204 ensures stable clamping force, adapts to high-temperature vibration environment, shortens installation time, improves seismic resistance, and avoids the loosening risk of traditional welding and bolts. By setting up corrugated convex and concave plates 104, the corrugated structure increases the surface area of ​​the reinforcing plate 1, allowing the castable to be embedded in the corrugated gaps, improving mechanical interlocking strength. Through the design of the outer high-temperature resistant alloy, it directly contacts high temperature and corrosive media, providing resistance to oxidation, sulfur and alkali corrosion. Through the design of the inner carbon steel, structural strength can be guaranteed and costs can be reduced. The combination of high-performance alloy on the outer layer and economical material on the inner layer balances durability and economy.

[0042] Please see Figure 1 , Figure 4 and Figure 5 The thickened plate 101 has a guide pipe 107 inside, and a first connecting pipe 105 and a second connecting pipe 106 are provided on the top of the thickened plate 101. The guide pipe 107 built into the thickened plate 101 can be used to circulate cooling medium, reducing the risk of localized overheating. The input end of the first connecting pipe 105 is fixedly connected to the output end of the guide pipe 107, and the output end of the second connecting pipe 106 is fixedly connected to the input end of the guide pipe 107. The output end of the first connecting pipe 105 on the top of one thickened plate 101 is connected to the output end of the second connecting pipe 106 on the top of another thickened plate 101. A connecting horizontal pipe 6 is fixedly connected between the input terminals 06. By setting the first connecting pipe 105, the second connecting pipe 106 and the connecting horizontal pipe 6, the guide pipes 107 of multiple thickened plates 101 can be connected in series to form a closed-loop cooling system for uniform heat dissipation. The output terminal of the first connecting pipe 105 at the top of one thickened plate 101 is fixedly connected to a return pipe 8, and the input terminal of the second connecting pipe 106 at the top of another thickened plate 101 is fixedly connected to an inlet pipe 7. Through the return pipe 8 and the inlet pipe 7, an external cooling system can be connected to realize the input and output of the medium.

[0043] Please see Figure 3 and Figure 4 A guide plate 103 is fixedly connected to the side of the thickened plate 101. The guide plate 103 is located at the joint of two thickened plates 101. By setting the guide plate 103 at the joint, airflow or material can be guided to flow along a specific path, which can reduce direct erosion at the joint. Both sides of the thickened plate 101 are provided with multiple convex splicing parts 102 and concave splicing parts 109. The concave splicing part 109 on the side of one thickened plate 101 is adapted to the convex splicing part 102 of the adjacent plate. The convex splicing part 102 and the concave splicing part 109 are mortised and tenoned together to ensure splicing accuracy, increase the friction of the contact surface, and prevent... To prevent misalignment, the modular design simplifies the installation process. High-temperature resistant elastic gaskets 4 are provided at the joint of the two thickened plates 101. These gaskets fill the joint gaps and provide a seal to prevent leakage. The elastic material also compensates for differences in thermal deformation and avoids stress concentration. Connecting pieces 5 are provided on the sides of the joint of the two thickened plates 101. The connecting pieces 5 are connected to the two thickened plates 101 by connecting bolts. Connecting the connecting pieces 5 to the two thickened plates 101 by connecting bolts can form a double fixation with the convex and concave joint 109, improving vibration resistance and facilitating partial replacement and maintenance.

[0044] In this embodiment, by setting the sleeve 201, the stabilizing rod 3, the locking block 207 and the locking groove 301, the reinforcing plate 1 can be installed quickly without tools. The connecting spring 204 ensures stable clamping force, adapts to high temperature and vibration environment, shortens installation time, improves seismic resistance, and avoids the loosening risk of traditional welding and bolts. By setting the corrugated concave-convex plate 104, the corrugated structure increases the surface area of ​​the reinforcing plate 1, allowing the castable to be embedded in the corrugated gaps, improving mechanical interlocking strength. Through the design of the outer high temperature resistant alloy, it can directly contact high temperature and corrosive media, providing resistance to oxidation, sulfur and alkali corrosion. Through the design of the inner carbon steel, the structural strength can be guaranteed and the cost can be reduced. The combination of the outer high performance alloy and the inner economic material takes into account both durability and economy.

[0045] The working principle of the above embodiment is as follows: When in use, the concave splicing part 109 is adapted to the convex splicing part 102 of the adjacent plate, so that multiple thickened plates 101 can be spliced ​​together to form a reinforcing plate 1. At the same time, when splicing, a high-temperature resistant elastic gasket 4 can be placed at the splicing point of two thickened plates 101. At the same time, the connection between the two thickened plates 101 can be further strengthened by the connecting piece 5 and the connecting bolt.

[0046] When it is necessary to connect the thickened plate 101 to the cylinder 2, people pull the actuating block 205, and then insert the threading rod into the threading hole 108 and the sleeve 201. After the threading is completed, the actuating block 205 is released. Under the action of the connecting spring 204, the locking block 207 can be locked in the locking groove 301, thereby fixing the threading rod in the sleeve 201. The fixing is then complete.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0048] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thickened inner cylinder for a cement preheater, comprising a reinforcing plate (1) and a cylinder body (2), characterized in that: The reinforcing plate (1) is located inside the cylinder (2), and the reinforcing plate (1) is spliced ​​together from multiple thickened plates (101); The thickened plate (101) has a through hole (108) inside. The inner side of the cylinder (2) is provided with a plurality of sleeves (201). A stabilizing rod (3) is inserted through the sleeve (201) and the through hole (108). L-shaped movable grooves (202) are provided on opposite sides inside the sleeve (201). A connecting spring (204) is fixedly connected to the inner side of the L-shaped movable groove (202). A lever is fixedly connected to one end of the connecting spring (204). Block (205), the L-shaped movable groove (202) has a through hole (203) on its side, the actuating block (205) is slidably connected in the through hole (203), the actuating block (205) is fixedly connected to the side of the actuating block (205) and a connecting plate (206) is fixedly connected to the side of the connecting plate (206), the side of the locking block (207) is locked in the locking groove (301), and the back of the thickening plate (101) is fixedly connected to a corrugated convex and concave plate (104).

2. The thickened inner cylinder of a cement preheater according to claim 1, characterized in that: The thickened plate (101) is provided with a guide pipe (107) inside, and a first connecting pipe (105) and a second connecting pipe (106) are provided on the top of the thickened plate (101).

3. The thickened inner cylinder of a cement preheater according to claim 2, characterized in that: The first connecting pipe (105) input end is fixedly connected to the output end of the guide pipe (107), the second connecting pipe (106) output end is fixedly connected to the input end of the guide pipe (107), and a connecting horizontal pipe (6) is fixedly connected between the output end of the first connecting pipe (105) on the top of one of the thickened plates (101) and the input end of the second connecting pipe (106) on the top of the other thickened plate (101).

4. The thickened inner cylinder of a cement preheater according to claim 3, characterized in that: A return pipe (8) is fixedly connected to the output end of the first connecting pipe (105) on the top of one of the thickening plates (101), and an inlet pipe (7) is fixedly connected to the input end of the second connecting pipe (106) on the top of the other thickening plate (101).

5. The thickened inner cylinder of a cement preheater according to claim 1, characterized in that: A guide plate (103) is fixedly connected to the side of the thickened plate (101), and the guide plate (103) is located at the splice of the two thickened plates (101).

6. The thickened inner cylinder of a cement preheater according to claim 1, characterized in that: The thickened plate (101) has multiple convex splicing parts (102) and concave splicing parts (109) on both sides, and the concave splicing part (109) on one side of the thickened plate (101) is adapted to the convex splicing part (102) of the adjacent plate.

7. The thickened inner cylinder of a cement preheater according to claim 1, characterized in that: A high-temperature resistant elastic gasket (4) is provided at the joint of the two thickened plates (101).

8. The thickened inner cylinder of a cement preheater according to claim 1, characterized in that: A connecting piece (5) is provided on the side of the joint of the two thickened plates (101), and the connecting piece (5) is connected to the two thickened plates (101) by connecting bolts.

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