Rotary kiln burner positioning device

Abstract

The utility model discloses a rotary kiln burner positioning device which comprises a cross-shaped frame body, the frame body comprises two telescopic rods, and each telescopic rod comprises a base rod located in the middle, screw rods fixed to the two ends of the base rod and telescopic cylinders connected to the screw rods in a threaded mode. The middle parts of the two base rods are connected with each other; a supporting foot part used for being pressed on the inner wall of the rotary kiln is arranged at the end, away from the base rod, of the telescopic cylinder. And a scale is arranged on the base rod and is used for indicating the screw joint position of the telescopic cylinder on the screw rod. By the adoption of the technical scheme, the rotary kiln burner positioning device is accurate in positioning, the four supporting leg parts are evenly pressed on the inner wall of a rotary kiln by adjusting the telescopic rods, it is guaranteed that the center of the frame body is located on the axis of the rotary kiln, and accurate axial positioning is achieved; a laser pen is used for irradiating the center position of the frame body, accurate visual feedback is provided, and accurate angle adjustment of the combustor is ensured.

Description

Technical Field

[0001] The utility model relates to a positioning device for a rotary kiln burner, belonging to the technical field of cement production. Background Art

[0002] The rotary kiln burner of a cement kiln is a crucial device in the cement production process. It is responsible for providing the mixing and combustion of fuel and air to generate sufficient heat for firing cement clinker. The main functions of the rotary kiln burner are fuel supply and air supply. The rotary kiln burner evenly sprays fuel (such as pulverized coal, natural gas, heavy oil, etc.) into the kiln and provides sufficient air (primary air, secondary air, etc.) to ensure the complete combustion of the fuel. For example, a pulverized coal oxy-fuel burner for a cement rotary kiln disclosed in Chinese patent document CN 211977552 U. The axial positioning of the rotary kiln burner is crucial for ensuring the stability and efficiency of the combustion process. Axial positioning refers to the positioning of the burner in the axial direction of the rotary kiln axis. Accurate axial positioning can ensure the uniform distribution of the flame in the kiln, thereby improving the combustion efficiency and the quality of the clinker. Usually, the inlet of the rotary kiln is selected as the reference point, and by adjusting the mounting bracket of the burner, the nozzle of the burner is aligned with the center line of the rotary kiln. In the past, the axial positioning method of the rotary kiln burner was to insert a laser pen through the central oil gun channel of the burner, and the positioning was carried out through the spot landing point of the laser in the smoke chamber. However, this method cannot ensure that the laser spot falls on the center line of the rotary kiln. The axial position of the burner nozzle is incorrect, the flame deviates from the center, affecting the heat distribution in the kiln and the uniform firing of the clinker. The uneven heat distribution may further cause local overheating or overcooling of the kiln body, increasing the thermal stress and shortening the service life of the kiln body. The flame deviation will cause excessive wear or erosion of the refractory bricks in some areas, increasing the maintenance frequency and cost. Summary of the Utility Model

[0003] Therefore, the purpose of the utility model is to provide a positioning device for a rotary kiln burner that can make the landing point of the laser spot of the laser pen be located on the center line of the rotary kiln.

[0004] To achieve the above purpose, a positioning device for a rotary kiln burner of the utility model includes a cross-shaped frame body. The frame body includes two telescopic rods. Each telescopic rod includes a base rod in the middle, screws fixed at both ends of the base rod, and a telescopic cylinder screwed on the screws; the middle parts of the two base rods are connected to each other; at the end of the telescopic cylinder far from the base rod, there is a supporting foot for pressing against the inner wall of the rotary kiln; on the base rod, there is a scale for indicating the screwing position of the telescopic cylinder on the screw.

[0005] The telescopic cylinder includes a cylinder body and an adjusting nut fixed to the end of the cylinder body. The screw rod is screwed to the adjusting nut and inserted into the cylinder body.

[0006] A mounting nut is fixed to one end of the screw rod close to the base rod, and the mounting nut is fixed to the end of the base rod.

[0007] The middle parts of the two base rods are hinged to each other through a rotating shaft.

[0008] The rotary kiln burner positioning device further includes a laser pen and a laser pen mounting seat; the laser pen mounting seat is cylindrical and is used to be inserted into the central ignition channel of the burner, and the laser pen is inserted into the laser pen mounting seat.

[0009] With the above technical solution, when the rotary kiln burner positioning device of the present utility model is in use, the telescopic cylinders at both ends of the two telescopic rods are adjusted to make the four supporting feet abut against the inner wall of the rotary kiln, so that the distance from the central position of the frame body to the inner wall of the rotary kiln is equal. At this time, the central position of the frame body is located on the axis of the rotary kiln. Then, the angle of the central ignition channel of the burner is adjusted so that the emitted laser of the laser pen irradiates on the central position of the frame body. At this time, the axial positioning of the burner is completed. Compared with the prior art, the rotary kiln burner positioning device of the present utility model has the following beneficial effects:

[0010] 1. Precise positioning. By adjusting the telescopic rod, the four supporting feet are evenly pressed against the inner wall of the rotary kiln, ensuring that the central position of the frame body is located on the axis of the rotary kiln, realizing precise axial positioning; using the laser pen to irradiate the central position of the frame body provides precise visual feedback to ensure that the angle adjustment of the burner is accurate.

[0011] 2. The cross-shaped frame body design provides a stable support structure, ensuring that the positioning device is stable and does not shift during operation; four-point support, and the four supporting feet at both ends of the telescopic rod are evenly distributed, and can be firmly pressed against the inner wall of the rotary kiln, enhancing the stability and reliability of the device.

[0012] 3. Flexible adjustment. The telescopic rod is composed of a base rod, a screw rod and a telescopic cylinder, and the length can be flexibly adjusted to adapt to rotary kilns of different specifications and sizes; the scale on the base rod indicates the screwing position of the telescopic cylinder, which is convenient for precise adjustment to ensure that the distance from the supporting feet to the inner wall of the kiln is equal.

[0013] 4. Simple installation. The two base rods are hinged through a rotating shaft, and the angle of the frame body can be flexibly adjusted to adapt to different installation requirements; the laser pen mounting seat is designed to be cylindrical, which is convenient for quickly inserting into the central ignition channel of the burner, simplifying the installation and debugging process.

[0014] 5. Through rapid and precise positioning, the installation and commissioning time of the burner is reduced, and the production efficiency is improved; precise positioning reduces the wear and faults during the operation of the burner, and reduces the maintenance cost and frequency. Description of the Drawings

[0015] Figure 1 It is a schematic structural view of the frame body in the present utility model.

[0016] Figure 2 It is an exploded schematic view of the telescopic rod.

[0017] Figure 3 It is a schematic view of the usage state of the present utility model. Detailed Embodiment

[0018] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0019] As Figures 1-3 shown, a rotary kiln burner positioning device of the present utility model includes a cross-shaped frame body, a laser pen 1 and a laser pen mounting seat 2. The laser pen mounting seat 2 is cylindrical and is used to be inserted into the central ignition channel of the burner 3 to provide support for the laser pen 1, and the laser pen 1 is inserted into the laser pen mounting seat 2.

[0020] The frame body includes two telescopic rods 4. Each telescopic rod 4 includes a base rod 41 in the middle, screw rods 42 fixed at both ends of the base rod 41, a telescopic cylinder 43 screwed on the screw rods 42, and a scale 44 fixed on the base rod 41. The middle parts of the two base rods 41 are hinged to each other through a rotating shaft. At the end of the telescopic cylinder 43 away from the base rod 41, there is a supporting foot part 431a for pressing on the inner wall of the rotary kiln. The telescopic cylinder 43 includes a cylinder body 431 and an adjusting nut 432 welded and fixed at the end of the cylinder body 431. The screw rod 42 is screwed on the adjusting nut 432 and inserted into the cylinder body 431. At the end of the screw rod 42 close to the base rod 41, an installation nut 411 is fixed. The screw rod 42 and the installation nut 411 can be welded and fixed, or can be adhesively fixed through thread glue. The installation nut 411 is welded and fixed at the end of the base rod 41. The scale 44 is fixed on the base rod 41 and extends towards both ends, and is used to indicate the screwing position of the telescopic cylinder 43 on the screw rod 42.

[0021] When positioning, the frame is opened in the kiln to make the two telescopic rods 4 perpendicular to each other. The telescopic cylinders 43 at both ends of the telescopic rods 4 are adjusted so that the four supporting feet 431a are respectively abutted against the first ring of refractory bricks behind the refractory iron casting at the kiln mouth, and the center of the frame is equidistant from the upper, lower, left, and right kiln bricks. At this time, the center position of the frame is located on the axis of the rotary kiln. Then, the angle of the central ignition channel of the burner is adjusted so that the emitted laser of the laser pen 1 irradiates on the center position of the frame. At this time, the axial positioning of the burner is completed, and the zero position can be recorded on the angle scale of the burner.

[0022] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or variations derived therefrom are still within the protection scope of the creation of the present utility model.

Claims

1. A rotary kiln burner positioning device, characterized in that: The invention comprises a cross-shaped frame body, wherein the frame body comprises two telescopic rods, each of the telescopic rods comprises a base rod located in the middle, screw rods fixed at both ends of the base rod and a telescopic cylinder screwed on the screw rod; the middle parts of the two base rods are connected to each other; a supporting foot part for pressing against the inner wall of the rotary kiln is arranged at one end of the telescopic cylinder away from the base rod; a ruler is arranged on the base rod, and the ruler is used to indicate the screwed position of the telescopic cylinder on the screw rod.

2. The rotary kiln burner positioning device according to claim 1, characterized in that: The telescopic cylinder comprises a cylinder body and an adjusting nut fixed to the end of the cylinder body, and the screw rod is threadedly connected to the adjusting nut and inserted into the cylinder body.

3. The rotary kiln burner positioning device according to claim 2, characterized in that: A mounting nut is fixed on one end of the screw rod close to the base rod, and the mounting nut is fixed to the end of the base rod.

4. The rotary kiln burner positioning device according to any one of claims 1 to 3, characterized in that: The middle parts of the two base rods are hinged to each other through a rotating shaft.

5. The rotary kiln burner positioning device according to any one of claims 1 to 3, characterized in that: The rotary kiln burner positioning device also includes a laser pen and a laser pen mounting seat; the laser pen mounting seat is cylindrical and is used to be inserted into the central ignition channel of the burner, and the laser pen is inserted into the laser pen mounting seat.

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