Automatic dust cleaning structure of cement rotary kiln burner

Abstract

The utility model relates to an automatic dust cleaning structure of cement rotary kiln burner, including cement rotary kiln burner structure, is provided with air cannon automatic dust cleaning pipe fitting structure at the top of cement rotary kiln burner structure, air cannon automatic dust cleaning pipe fitting structure includes the dust cleaning main pipe set between the cylinder structure and anchor fastener at the top of cement rotary kiln burner structure, the dust cleaning spray head body structure of uniform distribution setting on the dust cleaning main pipe upper portion and the air cannon gas transmission pipeline connected in the dust cleaning main pipe rear end and the air cannon gas transmission pipeline connection air cannon generating device. This structure can clean the top dust in time in operation, reduces the dust of burner center line subsidence under the adverse environment of burner, improves the clinker section burning quality and reduces the damage of burner protection layer caused by artificial cleaning, guarantees the normal operation of burner, ensures the stable production of kiln section burning system, improves the production economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of cement rotary kilns, and in particular to an automatic ash removal structure for cement rotary kiln burners. Background Technology

[0002] In addition to the pulverized coal combustion in the kiln tail preheater for material preheating and decomposition, the most important aspect of the cement rotary kiln combustion system is the pulverized coal injection into the rotary kiln by the kiln head burner. The performance of the burner directly affects the sintering quality of the clinker. However, during online operation, the burner is often affected by "flying sand" and ventilation within the kiln, resulting in ash accumulation on the top of the burner. This causes the center line of the burner head to sink, affecting combustion efficiency. Currently, the conventional method for cleaning the burner head is to use a steel pipe through the cleaning hole to clean and tamp the burner. This method easily damages the protective layer of the burner, accelerates the burning of the burner end face, affects the performance, and may even lead to kiln shutdown due to burner issues, thus causing process accidents and economic losses. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic ash removal structure for a cement rotary kiln burner. The main solution is to clean the ash accumulated on the top of the burner without damaging the protective layer. This ensures that the burner does not sink due to ash accumulation during operation, thus preventing the clinker calcination quality and burner steel structure damage. This improves the economic efficiency of clinker production and reduces accidents and economic losses caused by kiln shutdowns.

[0004] The technical solution adopted by this utility model to solve its technical problem is: an automatic ash removal structure for a cement rotary kiln burner, including a cement rotary kiln burner structure, and an air cannon automatic ash removal pipe structure provided on the top of the cement rotary kiln burner structure. The air cannon automatic ash removal pipe structure includes an ash removal main pipe provided between the cylindrical structure and the anchor at the top of the cement rotary kiln burner structure, an ash removal nozzle body structure evenly distributed on the upper part of the ash removal main pipe, an air cannon gas transmission pipe connected to the rear end of the ash removal main pipe, and an air cannon generating device connected to the air cannon gas transmission pipe.

[0005] The dust removal main pipe includes a pre-embedded main pipe body with a front plug end and a rear connecting end, and the dust removal nozzle body structure includes a connector seat set in the pre-embedded main pipe body and a three-way air outlet set on the upper part of the connector seat.

[0006] The air cannon generating device includes an air cannon mounting frame, an air cannon assembly housed in the air cannon mounting frame, branch output pipes located at the outer end of the air cannon, an airflow control valve body connected to each branch output pipe, and an output pipe connected to the airflow control valve body. The output pipes are connected to the air cannon gas transmission pipes, and a diffusion pressurization chamber is provided between the output pipes and the air cannon gas transmission pipes.

[0007] The main dust removal pipe is equipped with a pre-embedded stable connection section on its exterior.

[0008] The beneficial effects of this utility model are: the structure can clean the top ash in time during operation, reduce the sinking of the burner center line caused by ash accumulation in the harsh environment of the burner, improve the quality of clinker calcination, reduce the damage to the burner protective layer caused by manual cleaning, ensure the normal operation of the burner, ensure the stable production of the kiln calcination system, and improve the economic benefits of production.

[0009] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the dust removal main pipe of this utility model.

[0011] Figure 2 for Figure 1 A schematic diagram of the structure of the central dust removal nozzle.

[0012] Figure 3 This is a schematic diagram of the structure of this utility model.

[0013] Figure 4 A schematic diagram showing the construction of the dust removal main pipe of this utility model with a pre-embedded stable connection section.

[0014] In the diagram: 1. Air cannon gas transmission pipeline, 2. Front plug end, 3. Rear connection end, 4. Embedded main body, 5. Connector seat, 6. Three-way air outlet, 7. Air cannon mounting frame, 8. Air cannon assembly, 9. Branch output pipeline, 10. Airflow control valve body, 11. Output pipeline, 12. Embedded stable connection section, 13. Cylinder structure, 14. Anchor, 15. Diffusion pressurization chamber. Detailed Implementation

[0015] The terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" used in the application text to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example 1, as Figure 1-3 As shown, an automatic ash removal structure for a cement rotary kiln burner includes a cement rotary kiln burner structure and an air cannon automatic ash removal pipe structure installed on the top of the cement rotary kiln burner structure. The air cannon automatic ash removal pipe structure includes an ash removal main pipe installed between a cylindrical structure 13 and an anchor 14 at the top of the cement rotary kiln burner structure, an ash removal nozzle body structure evenly distributed on the upper part of the ash removal main pipe, an air cannon gas transmission pipe 1 connected to the rear end of the ash removal main pipe, and an air cannon generating device connected to the air cannon gas transmission pipe.

[0018] The cleaning main pipe includes a pre-embedded main pipe body 4 with a front plug end 2 and a rear connecting end 3. The cleaning nozzle body structure includes a connector seat 5 set in the pre-embedded main pipe body and a three-way air outlet 6 set on the upper part of the connector seat.

[0019] The air cannon generating device includes an air cannon mounting frame 7, an air cannon assembly 8 disposed in the air cannon mounting frame, a branch output pipe 9 disposed at the outer end of the air cannon, an airflow control valve body 10 connected to each branch output pipe, and an output pipe 11 connected to the airflow control valve body. The output pipe is connected to the air cannon gas transmission pipe; and a diffusion pressurization chamber 15 is provided between the output pipe and the air cannon gas transmission pipe.

[0020] First, a pre-embedded main body 4 of a heat-resistant round steel pipe with an inner diameter of φ16mm is welded to the burner end face. A small heat-resistant joint seat 5 with an inner diameter of 12mm is welded with holes made in the pre-embedded main body 4 within a range of 0-2m. The holes are respectively placed on the vertical center line of the heat-resistant steel pipe and at 30° to the vertical center line. The holes are staggered and the three-way air outlet 6 is spaced about 150mm apart. The total height of the pre-embedded main body 4 is equal to the thickness of the burner protective layer. An air cannon generator is installed on the air supply side of the burner and connected to the air cannon gas transmission pipeline. After the above construction is completed, refractory anchors 13 are welded and the protective layer is poured. When ash accumulates on the top of the burner during the operation of the rotary kiln, it is promptly removed and cleaned with air cannons to ensure the normal operation of the burner and the stable production of the kiln section firing system.

[0021] Example 2, as Figure 4As shown, a pre-embedded stable connection section 12 is provided on the outside of the main dust removal pipe.

[0022] This structure can promptly clean the top ash during operation, reducing the risk of burner centerline sinking caused by ash accumulation in the harsh environment of the burner, improving the quality of clinker calcination, reducing damage to the burner protective layer caused by manual cleaning, ensuring normal operation of the burner, ensuring stable production of the kiln calcination system, and improving production economic efficiency.

[0023] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

[0024] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

Claims

1. An automatic ash removal structure for a cement rotary kiln burner, comprising a cement rotary kiln burner structure, characterized in that: An automatic air cannon cleaning pipe structure is installed on the top of the cement rotary kiln burner structure. The automatic air cannon cleaning pipe structure includes a cleaning main pipe installed between the cylindrical structure and the anchor at the top of the cement rotary kiln burner structure, a cleaning nozzle body structure evenly distributed on the upper part of the cleaning main pipe, an air cannon gas transmission pipe connected to the rear end of the cleaning main pipe, and an air cannon generating device connected to the air cannon gas transmission pipe.

2. The automatic ash removal structure for the cement rotary kiln burner as described in claim 1, characterized in that: The dust removal main pipe includes a pre-embedded main pipe body with a front plug end and a rear connecting end, and the dust removal nozzle body structure includes a connector seat set in the pre-embedded main pipe body and a three-way air outlet set on the upper part of the connector seat.

3. The automatic ash removal structure for the cement rotary kiln burner as described in claim 1, characterized in that: The air cannon generating device includes an air cannon mounting frame, an air cannon assembly housed in the air cannon mounting frame, branch output pipes located at the outer end of the air cannon, an airflow control valve body connected to each branch output pipe, and an output pipe connected to the airflow control valve body. The output pipes are connected to the air cannon gas transmission pipes, and a diffusion pressurization chamber is provided between the output pipes and the air cannon gas transmission pipes.

4. The automatic ash removal structure for the cement rotary kiln burner as described in claim 1, characterized in that: The main dust removal pipe is equipped with a pre-embedded stable connection section on its exterior.

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