Kiln head sealing structure of rotary kiln

Abstract

The utility model relates to the technical field of rotary kilns, and discloses a kiln head sealing structure of a rotary kiln, which comprises a main body mechanism and a fixing mechanism. According to the kiln head sealing structure of the rotary kiln, through installation of the main body mechanism, when the kiln head of the rotary kiln is sealed, the kiln head sealing cover is firstly installed on the kiln head of the rotary kiln, the outer wall of the kiln head can extrude the elastic sealing gasket during installation, and the elastic sealing gasket is driven by the telescopic spring to contract; after installation in place, the telescopic spring drives the elastic sealing washer to reset, the elastic sealing washer is firmly extruded on the outer wall of the kiln head, gaps can be avoided, the sealing effect is improved, the service life of the elastic sealing washer is prolonged through the arrangement of the high-temperature-resistant coating layer, and the nut can be unscrewed when the elastic sealing washer is damaged and needs to be replaced. And then the connecting bolt is taken out from the kiln head sealing cover, so that the sealing piece is replaced, the replacement efficiency is improved, and the practicability of the kiln head sealing structure of the rotary kiln is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary kilns, in particular to a kiln head sealing structure of a rotary kiln. Background Technique

[0002] A rotary kiln consists of processes such as gas flow, fuel combustion, heat transfer, and material movement. The rotary kiln enables the fuel to burn fully, and the heat generated by fuel combustion can be effectively transferred to the material. After the material receives heat, a series of physical and chemical changes occur, and finally, finished clinker is formed. Metallurgical and chemical kilns are mainly used in the metallurgical industry for magnetization roasting of lean iron ore in steel plants; oxidation roasting of chromium and nickel iron ores; roasting of high-metallurgy ores in refractory material plants and roasting of clinker and aluminum hydroxide in aluminum plants; roasting of minerals such as chromite sand and chromite powder in chemical plants; and lime kilns are used for roasting active lime and light-burned dolomite used in steel plants and ferroalloy plants.

[0003] The existing patent document CN214747159U proposes a kiln head and kiln tail sealing structure for a rotary kiln, including a kiln body. An opening is provided at one end of the kiln body, a slot is provided outside the kiln body at the end of the opening, a first U-shaped block and a second U-shaped block are respectively fixedly connected to both sides of the kiln body where the slot is located. A connecting plate is provided between the first U-shaped block and the second U-shaped block, a threaded rod is provided in the middle of the connecting plate, and a sealing cover is provided at one end of the threaded rod close to the kiln body. The utility model has the following advantages: By installing the sealing cover on the connecting plate, the connecting plate is first limited and then the sealing cover is sealed, improving the extrusion on the sealing cover and avoiding the effect of uneven extrusion; The trapezoidal blocks arranged on both sides of the kiln body can pry the sealing cover when the sealing cover is difficult to open due to excessive extrusion, facilitating the opening of the sealing cover.

[0004] However, due to the prior art of the patent technology with the publication number CN214747159U, the sealing effect at the rotary kiln head is not very good during use, and there may be gaps generated, affecting the use effect. Content of the Utility Model

[0005] Technical Problem to be Solved: The purpose of the utility model is to provide a kiln head sealing structure for a rotary kiln to solve the problem that the sealing effect at the rotary kiln head is not very good in the above-mentioned background technique, and there may be gaps generated, affecting the use effect.

[0006] Technical Solution: To achieve the above purpose, the utility model provides the following technical solution: A kiln head sealing structure for a rotary kiln, including a main body mechanism and a fixing mechanism. The fixing mechanism is located at the outer end of the main body mechanism. The main body mechanism includes a rotary kiln head, a kiln head sealing cover, and an installation hole. The kiln head sealing cover is movably installed at the outer end of the rotary kiln head, and the installation hole is fixedly arranged at the outer end of the kiln head sealing cover.

[0007] Preferably, the main body mechanism further includes a connecting bolt, a nut and a sealing assembly. The connecting bolt is movably connected inside the mounting hole, the nut is movably connected to the outer end of the connecting bolt, and the sealing assembly is fixedly installed at the lower end of the connecting bolt. When sealing the head of the rotary kiln, first install the kiln head sealing cover on the head of the rotary kiln. During installation, the outer wall of the kiln head will squeeze the elastic sealing washer, causing the telescopic spring to drive the elastic sealing washer to contract. After installation in place, the telescopic spring drives the elastic sealing washer to reset, firmly squeezing the elastic sealing washer against the outer wall of the kiln head, which can avoid the generation of gaps and improve the sealing effect. The setting of the high-temperature resistant coating layer improves the service life of the elastic sealing washer. When the elastic sealing washer is damaged and needs to be replaced, the nut can be unscrewed, and then the connecting bolt can be taken out from the kiln head sealing cover, thereby replacing the seal, improving the replacement efficiency.

[0008] Preferably, the sealing assembly includes a telescopic spring, an elastic sealing washer and a high-temperature resistant coating layer. The telescopic spring is fixedly installed at the lower end of the connecting bolt. There are two sets of sealing assemblies, which are arranged up and down inside the kiln head sealing cover and can firmly seal the outer wall of the kiln head. The telescopic spring has good reset ability and can drive the elastic sealing washer to contract and reset.

[0009] Preferably, the elastic sealing washer is fixedly installed at the lower end of the telescopic spring, and the high-temperature resistant coating layer is fixedly arranged at the lower end of the elastic sealing washer. The elastic sealing washer can tightly fit the outer wall of the kiln head, thereby improving the sealing performance. The high-temperature resistant coating layer can improve the high-temperature resistance of the elastic sealing washer and extend the service life of the elastic sealing washer.

[0010] Preferably, the fixing mechanism includes a fixing screw block, a fixing piece, a threaded hole, a fixing bolt and a handwheel. The fixing screw block is fixedly installed at the outer end of the head of the rotary kiln.

[0011] Preferably, the fixing piece is fixedly installed at the outer end of the kiln head sealing cover, and the threaded hole is fixedly arranged at the left end of the fixing piece.

[0012] Preferably, the fixing bolt is movably installed inside the threaded hole, and the handwheel is fixedly installed at the left end of the fixing bolt. When fixing the kiln head sealing cover, align the fixing piece and the fixing screw block, then insert the bolt into the threaded hole and turn the handwheel to tighten it, which can firmly fix the kiln head sealing cover on the head of the rotary kiln.

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

[0014] 1. The kiln head sealing structure of this rotary kiln realizes the following functions through the installation of the main mechanism. When sealing the kiln head of the rotary kiln, first install the kiln head sealing cover on the kiln head of the rotary kiln. During installation, the outer wall of the kiln head will squeeze the elastic sealing gasket, causing the telescopic spring to drive the elastic sealing gasket to contract. After installation in place, the telescopic spring drives the elastic sealing gasket to reset, firmly squeezing the elastic sealing gasket against the outer wall of the kiln head, which can avoid the generation of gaps and improve the sealing effect. The setting of the high-temperature resistant coating layer extends the service life of the elastic sealing gasket. When the elastic sealing gasket needs to be replaced due to damage, the nut can be unscrewed, and then the connecting bolt can be taken out from the kiln head sealing cover, thereby replacing the sealing component, improving the replacement efficiency, and enhancing the practicality of the kiln head sealing structure of the rotary kiln;

[0015] 2. The kiln head sealing structure of this rotary kiln realizes the following functions through the installation of the fixing mechanism. When fixing the kiln head sealing cover, align the fixing piece and the fixing screw block, then insert the fixing bolt into the threaded hole, and turn the handwheel to tighten it, which can firmly fix the kiln head sealing cover on the kiln head of the rotary kiln, improving the stability of the kiln head sealing structure of the rotary kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is an exploded structural schematic diagram of the present utility model;

[0018] Figure 3 is an exploded structural schematic diagram of the main mechanism of the present utility model;

[0019] Figure 4 is a sectional structural schematic diagram of the present utility model.

[0020] In the figure: 1. Main mechanism; 101. Rotary kiln head; 102. Kiln head sealing cover; 103. Installation hole; 104. Connecting bolt; 105. Nut; 106. Sealing component; 1061. Telescopic spring; 1062. Elastic sealing gasket; 1063. High-temperature resistant coating layer; 2. Fixing mechanism; 201. Fixing screw block; 202. Fixing piece; 203. Threaded hole; 204. Fixing bolt; 205. Handwheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer toFigures 1-4 , the present utility model provides a technical solution: a kiln head sealing structure of a rotary kiln, including a main body mechanism 1 and a fixing mechanism 2. The fixing mechanism 2 is located at the outer end of the main body mechanism 1. The main body mechanism 1 includes a rotary kiln head 101, a kiln head sealing cover 102 and a mounting hole 103. The kiln head sealing cover 102 is movably installed at the outer end of the rotary kiln head 101, and the mounting hole 103 is fixedly arranged at the outer end of the kiln head sealing cover 102.

[0023] The main body mechanism 1 further includes a connecting bolt 104, a nut 105 and a sealing assembly 106. The connecting bolt 104 is movably connected inside the mounting hole 103, the nut 105 is movably connected to the outer end of the connecting bolt 104, and the sealing assembly 106 is fixedly installed at the lower end of the connecting bolt 104. The sealing assembly 106 includes a telescopic spring 1061, an elastic sealing washer 1062 and a high-temperature resistant coating layer 1063. The telescopic spring 1061 is fixedly installed at the lower end of the connecting bolt 104, the elastic sealing washer 1062 is fixedly installed at the lower end of the telescopic spring 1061, and the high-temperature resistant coating layer 1063 is fixedly arranged at the lower end of the elastic sealing washer 1062. When sealing the rotary kiln head 101, first install the kiln head sealing cover 102 on the rotary kiln head 101. During installation, the outer wall of the kiln head will squeeze the elastic sealing washer 1062, causing the telescopic spring 1061 to drive the elastic sealing washer 1062 to contract. After installation in place, the telescopic spring 1061 drives the elastic sealing washer 1062 to reset, firmly squeezing the elastic sealing washer 1062 against the outer wall of the kiln head, which can avoid the generation of gaps and improve the sealing effect. The setting of the high-temperature resistant coating layer 1063 extends the service life of the elastic sealing washer 1062. When the elastic sealing washer 1062 is damaged and needs to be replaced, the nut 105 can be unscrewed, and then the connecting bolt 104 can be taken out from the kiln head sealing cover 102 to replace the seal.

[0024] The fixing mechanism 2 includes a fixing screw block 201, a fixing piece 202, a threaded hole 203, a fixing bolt 204 and a handwheel 205. The fixing screw block 201 is fixedly installed at the outer end of the rotary kiln head 101, the fixing piece 202 is fixedly installed at the outer end of the kiln head sealing cover 102, the threaded hole 203 is fixedly arranged at the left end of the fixing piece 202, the fixing bolt 204 is movably installed inside the threaded hole 203, and the handwheel 205 is fixedly installed at the left end of the fixing bolt 204. When fixing the kiln head sealing cover 102, align the fixing piece 202 and the fixing screw block 201, then insert the fixing bolt 204 into the threaded hole 203 and rotate the handwheel 205 to tighten it, which can firmly fix the kiln head sealing cover 102 on the rotary kiln head 101.

[0025] Working principle: During installation, the outer wall of the kiln head will squeeze the elastic sealing washer 1062, causing the telescopic spring 1061 to drive the elastic sealing washer 1062 to contract. After the installation is in place, the telescopic spring 1061 drives the elastic sealing washer 1062 to reset, firmly squeezing the elastic sealing washer 1062 against the outer wall of the kiln head, which can avoid the generation of gaps and improve the sealing effect. The setting of the high-temperature resistant coating layer 1063 extends the service life of the elastic sealing washer 1062. When fixing the kiln head sealing cover 102, align the fixing piece 202 and the fixing screw block 201, then insert the fixing bolt 204 into the threaded hole 203 and turn the handwheel 205 to tighten it, so as to firmly fix the kiln head sealing cover 102 on the kiln head 101 of the rotary kiln. When the elastic sealing washer 1062 is damaged and needs to be replaced, the nut 105 can be unscrewed, and then the connecting bolt 104 can be taken out from the kiln head sealing cover 102, thereby replacing the seal.

[0026] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than a limitation on the protection scope of the present invention. Any simple modification or equivalent replacement made by those of ordinary skill in the art to the technical solution of the present invention shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A kiln head sealing structure of a rotary kiln, comprising a main body mechanism (1) and a fixing mechanism (2), characterized in that: The fixing mechanism (2) is located at the outer end of the main mechanism (1); the main mechanism (1) comprises a rotary kiln head (101), a kiln head sealing cover (102) and a mounting hole (103); the kiln head sealing cover (102) is movably mounted on the outer end of the rotary kiln head (101); and the mounting hole (103) is fixedly arranged on the outer end of the kiln head sealing cover (102); The main body mechanism (1) further comprises a connecting bolt (104), a nut (105) and a sealing assembly (106); the connecting bolt (104) is movably connected to the inside of the mounting hole (103); the nut (105) is movably connected to the outer end of the connecting bolt (104); and the sealing assembly (106) is fixedly mounted on the lower end of the connecting bolt (104).

2. The kiln head sealing structure of the rotary kiln according to claim 1, characterized in that: The sealing assembly (106) comprises a telescopic spring (1061), an elastic sealing gasket (1062) and a high temperature resistant coating layer (1063); the telescopic spring (1061) is fixedly mounted on the lower end of the connecting bolt (104).

3. The kiln head sealing structure of the rotary kiln according to claim 2, characterized in that: The elastic sealing gasket (1062) is fixedly mounted on the lower end of the telescopic spring (1061), and the high temperature resistant coating layer (1063) is fixedly arranged on the lower end of the elastic sealing gasket (1062).

4. The kiln head sealing structure of the rotary kiln according to claim 3, characterized in that: The fixing mechanism (2) comprises a fixing screw block (201), a fixing plate (202), a threaded hole (203), a fixing bolt (204) and a hand wheel (205); the fixing screw block (201) is fixedly mounted on the outer end of the rotary kiln head (101).

5. The kiln head sealing structure of the rotary kiln according to claim 4, characterized in that: The fixing plate (202) is fixedly mounted on the outer end of the kiln head sealing cover (102), and the threaded hole (203) is fixedly arranged at the left end of the fixing plate (202).

6. The kiln head sealing structure of the rotary kiln according to claim 5, characterized in that: The fixing bolt (204) is movably mounted inside the threaded hole (203), and the hand wheel (205) is fixedly mounted on the left end of the fixing bolt (204).

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