Anti-coking structure of inner wall of rotary kiln

Abstract

This utility model discloses an anti-coking structure for the inner wall of a rotary kiln, including a scraping assembly installed on one side of the kiln cylinder. The scraping assembly includes a fixed crossbeam, which has a U-shaped structure when viewed from above; hydraulic rods fixed at both ends of the crossbeam; and connecting rods fixed at the output ends of the hydraulic rods, with the connecting rods facing the kiln cylinder. By setting a fixed crossbeam, hydraulic rods, connecting rods, and other structures on the outside of the kiln cylinder, the scraper can be fixedly connected. When the kiln cylinder rotates, the fixed scraper can scrape the inner wall of the kiln cylinder, thereby cleaning off the coking layer. The advantage of this design is that, for the scraping assembly, only the scraper is located on the inside of the kiln cylinder, while all other components are located on the outside, making them less susceptible to damage from high temperatures. Furthermore, the kiln cylinder does not need to be stopped to cool down when the scraping assembly is in use, improving cleaning efficiency and avoiding economic losses caused by frequent start-ups and shutdowns of the kiln cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of rotary kiln technology, specifically relating to an anti-coking structure for the inner wall of a rotary kiln incineration. Background Technology

[0002] A rotary kiln is a cylindrical rotating device widely used in industrial production. Its working principle is to enable materials to undergo physical and chemical changes within the kiln through the rotation of the cylinder and the effect of the internal temperature field. It is one of the core equipment in metallurgy, building materials, chemical industry, environmental protection and other fields. During the combustion process of materials in a rotary kiln, the problem of molten material adhering and solidifying to form a coke layer may occur.

[0003] There are difficulties in treating coking layers. The temperature inside the rotary kiln is very high. If the various cleaning mechanisms are placed inside the rotary kiln, these structures are easily damaged by the high temperature. If they are placed outside the rotary kiln, cleaning is not efficient if the rotary kiln stops working and cools down. Moreover, frequent start-ups and shutdowns of the rotary kiln will cause economic losses. Therefore, a new anti-coking structure needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to provide a structure for preventing coking on the inner wall of a rotary kiln incinerator, in order to solve the problems mentioned in the background art, such as the cleaning mechanism being easily damaged by high temperature and the low cleaning efficiency, which can cause significant economic losses when dealing with coking layers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a structure for preventing coking on the inner wall of a rotary kiln incinerator, comprising a scraping assembly installed on one side of the kiln cylinder, the scraping assembly including...

[0006] A fixed crossbeam, which has a U-shaped structure when viewed from above;

[0007] Hydraulic rods fixed at both ends of the cross frame and connecting rods fixed at the output ends of the hydraulic rods, the connecting rods facing the kiln shell;

[0008] A scraper is installed through the inside of the kiln cylinder, and both ends of the scraper are fixedly connected to connecting rods on both sides.

[0009] Preferably, there is a gap between the scraper and the inner wall of the kiln cylinder, and the scraper is inclined.

[0010] Preferably, the scraping assembly further includes a connecting line A, which is connected to the hydraulic rod, and the two connecting lines A on both sides are connected in parallel.

[0011] Preferably, a pressure detection assembly is provided between the cross frame and the connecting rods on both sides. The pressure detection assembly includes a heat insulation plate fixed inside the cross frame, which blocks the space between the kiln cylinder and the hydraulic rod.

[0012] Preferably, the pressure detection assembly further includes a fixing plate fixed to one side of the heat insulation plate and a pressure detector connected to the surface of the fixing plate, with the detection end of the pressure detector facing the connecting rod.

[0013] Preferably, a rubber sleeve is provided between one end of the pressure detector and the fixing plate, and there is a gap between the detection end of the pressure detector and the connecting rod.

[0014] Preferably, the pressure detection component further includes a connecting line B, which is connected to the pressure detector.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] By installing fixed crossbars, hydraulic rods, connecting rods, and other structures on the outside of the kiln, the scraper can be fixedly connected. When the kiln rotates, the fixed scraper can scrape the inner wall of the kiln, thereby cleaning off the coking layer. The advantage of this design is that, for the scraping assembly, only the scraper is located inside the kiln, while all other components are located on the outside, making them less susceptible to damage from high temperatures. Furthermore, the kiln does not need to be stopped to cool down when the scraping assembly is in use, improving cleaning efficiency and avoiding economic losses caused by frequent kiln start-ups and shutdowns. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Enlarged view of area A in the middle;

[0019] Figure 3 This utility model Figure 1 Top view of area A in the middle;

[0020] In the diagram: 100, kiln cylinder; 200, scraper assembly; 201, crossbeam; 202, hydraulic rod; 203, scraper blade; 204, connecting rod; 205, connecting line A; 300, pressure detection assembly; 301, heat insulation plate; 302, fixing plate; 303, pressure detector; 304, connecting line B. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example

[0023] Please see Figures 1 to 3 This embodiment provides a technical solution: a structure for preventing coking on the inner wall of a rotary kiln incinerator, including a scraping assembly 200 installed on one side of the kiln cylinder 100. The scraping assembly 200 includes...

[0024] The fixed cross frame 201 has a U-shaped structure when viewed from above. The cross frame 201 is fixedly connected to the external support and does not contact the kiln cylinder 100. This way, the kiln cylinder 100 will not interfere with the cross frame 201 when it rotates.

[0025] Hydraulic rods 202 are fixed at both ends of the crossbar 201, and connecting rods 204 are fixed at the output ends of the hydraulic rods 202. The connecting rods 204 face the kiln 100 and pass through the scraper 203 set inside the kiln 100. The two ends of the scraper 203 are fixedly connected to the connecting rods 204 on both sides. When the kiln 100 rotates, the scraper 203 can scrape the inner wall of the kiln 100 to clean the coking layer. The scraper 203 is made of high-strength, high-temperature resistant nickel-based alloy and has good high-temperature resistance. For the scraping assembly 200, except for the high-temperature resistant, purely mechanical scraper 203, all other accessories are located outside the kiln 100 to reduce the adverse effects of high temperature on the scraping assembly 200.

[0026] In this embodiment, preferably, there is a gap between the scraper 203 and the inner wall of the kiln 100. The scraper 203 is inclined. Under normal conditions, because there is a gap between the scraper 203 and the inner wall of the kiln 100, the kiln 100 does not directly scrape the scraper 203 when it rotates. When scraping is required, the hydraulic rod 202 drives the scraper 203 to move, so that the scraper 203 comes into contact with the inner wall of the kiln 100. At this time, when the kiln 100 rotates, it will scrape the scraper 203, thereby cleaning the coking layer. The purpose of this design is to select the scraping time and scrape only when needed, so as to avoid the scraper 203 always being in contact with the inner wall of the kiln 100 and causing serious wear.

[0027] In this embodiment, preferably, the scraping assembly 200 further includes a connecting line A205, which is connected to the hydraulic rod 202. The connecting lines A205 on both sides are connected in parallel, so that the two hydraulic rods 202 can be started and stopped synchronously.

[0028] In this embodiment, preferably, a pressure detection component 300 is provided between the cross frame 201 and the connecting rods 204 on both sides. The pressure detection component 300 includes a heat insulation plate 301 fixed inside the cross frame 201. The heat insulation plate 301 blocks the space between the kiln cylinder 100 and the hydraulic rod 202, and the heat insulation plate 301 can block and weaken the heat.

[0029] In this embodiment, preferably, the pressure detection component 300 further includes a fixing plate 302 fixed to one side of the heat insulation plate 301 and a pressure detector 303 connected to the surface of the fixing plate 302. The detection end of the pressure detector 303 faces the connecting rod 204. When the hydraulic rod 202 drives the connecting rod 204 to move, it will squeeze the pressure detector 303, thereby detecting the extrusion pressure. This design controls the extrusion pressure between the scraper 203 and the kiln cylinder 100, avoiding excessive or insufficient extrusion pressure.

[0030] In this embodiment, preferably, a rubber sleeve is provided between one end of the pressure detector 303 and the fixing plate 302, and there is a gap between the detection end of the pressure detector 303 and the connecting rod 204. This gap is the same as the gap between the scraper 203 and the kiln cylinder 100. When the scraper 203 contacts the inner wall of the kiln cylinder 100, the pressure detector 303 contacts the connecting rod 204 simultaneously, thereby ensuring the accuracy of pressure detection.

[0031] In this embodiment, preferably, the pressure detection component 300 further includes a connecting line B304, which is connected to the pressure detector 303 to transmit the pressure detection signal.

[0032] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln incineration inner wall anti-coking structure, comprising a scraping assembly (200) installed on one side of a kiln cylinder (100), characterized in that: The scraping assembly (200) includes A fixed crossbeam (201) is provided, which has a U-shaped structure when viewed from above; Hydraulic rods (202) fixed at both ends of the cross frame (201) and connecting rods (204) fixed at the output end of the hydraulic rods (202), the connecting rods (204) facing the kiln cylinder (100); A scraper (203) is installed through the inside of the kiln cylinder (100), and the two ends of the scraper (203) are fixedly connected to the connecting rods (204) on both sides respectively.

2. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 1, characterized in that: There is a gap between the scraper (203) and the inner wall of the kiln cylinder (100), and the scraper (203) is inclined.

3. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 2, characterized in that: The scraping assembly (200) also includes a connecting line A (205), which is connected to the hydraulic rod (202), and the connecting lines A (205) on both sides are connected in parallel.

4. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 3, characterized in that: A pressure detection assembly (300) is provided between the cross frame (201) and the connecting rods (204) on both sides. The pressure detection assembly (300) includes a heat insulation plate (301) fixed inside the cross frame (201). The heat insulation plate (301) blocks the space between the kiln cylinder (100) and the hydraulic rod (202).

5. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 4, characterized in that: The pressure detection assembly (300) also includes a fixing plate (302) fixed to one side of the heat insulation plate (301) and a pressure detector (303) connected to the surface of the fixing plate (302), with the detection end of the pressure detector (303) facing the connecting rod (204).

6. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 5, characterized in that: A rubber sleeve is provided between one end of the pressure detector (303) and the fixing plate (302), and there is a gap between the detection end of the pressure detector (303) and the connecting rod (204).

7. The anti-coking structure for the inner wall of a rotary kiln incinerator according to claim 6, characterized in that: The pressure detection assembly (300) also includes a connecting line B (304) which is connected to the pressure detector (303).

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