Settling chamber for tertiary air pipe

Abstract

The utility model provides a settling chamber for a tertiary air duct, and relates to the technical field of cement production equipment, the settling chamber comprises the tertiary air duct connected with a cement kiln head cover and a C5 blanking pipe connected with a C5-stage cyclone cylinder of a preheater, the settling chamber is arranged below the tertiary air duct, the upper part of the settling chamber is communicated with the tertiary air duct, the lower part of the settling chamber is provided with a discharge port, and the discharge port is communicated with the C5-stage cyclone cylinder of the preheater. After the cement kiln head cover tertiary air pipe is used, materials entering the tertiary air pipe from the cement kiln head cover fall into the settling chamber under the action of gravity, pass through the air locking valve and then fall into the C5 discharging pipe, effective recycling and reutilization of the materials are achieved, and the cement kiln head cover tertiary air pipe is convenient to use. Compared with the prior art, the process state change caused by the fact that the ventilation area is affected by material accumulation of the flat section of the tertiary air pipe can be avoided, and meanwhile the scalding risk caused by material cleaning of post personnel is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cement production equipment, and in particular to a settling chamber for a tertiary air duct. Background Art

[0002] The tertiary air duct is an important component in the cement kiln system. It is mainly used to transport the tertiary air extracted from the kiln head hood to the decomposition furnace and other parts, providing oxygen for fuel combustion to promote the full combustion of the fuel and the decomposition reaction of the raw material.

[0003] However, the flat section where the tertiary air duct connects to the kiln head hood is prone to material accumulation. The accumulated material becomes hard and difficult to clean, and affects the ventilation area. The staff on duty are prone to burns when cleaning the accumulated material here, posing a safety risk. Summary of the Invention

[0004] The purpose of the embodiments of the present application is to provide a settling chamber for a tertiary air duct, which can avoid the technical problem of material accumulation in the flat section of the tertiary air duct affecting the ventilation area and causing changes in the process state, while reducing the risk of scalding caused by material cleaning for on-site personnel.

[0005] An embodiment of the present application provides a settling chamber for a tertiary air duct, comprising a tertiary air duct connected to a kiln head hood of a cement kiln and a C5 discharge pipe connected to a C5-stage cyclone of a preheater. A settling chamber is provided below the tertiary air duct, the upper portion of the settling chamber is communicated with the tertiary air duct, a discharge port is provided at the lower portion of the settling chamber, the discharge port is connected to the C5 discharge pipe, an air lock valve is provided on the settling chamber at the discharge port, and an anti-wear component is provided in the settling chamber.

[0006] Furthermore, the anti-wear assembly includes a wear-resistant plate and a plurality of supporting connectors. The wear-resistant plate is fixed in the sedimentation chamber through the plurality of supporting connectors. The wear-resistant plate is adapted to the inner wall of the sedimentation chamber to form an inner lining.

[0007] Furthermore, heat insulation cotton is filled between the wear-resistant plate and the inner wall of the sedimentation chamber.

[0008] Furthermore, the air lock valve is a double-flap air lock valve.

[0009] Furthermore, it also includes a scraper assembly, which is used to scrape the material adhered to the wear-resistant plate.

[0010] Furthermore, the scraper assembly includes a mounting frame, a scraper motor, a scraper shaft, a connecting rod and a scraper plate. The scraper motor is fixed to the tertiary air duct through the mounting frame. The scraper shaft is rotatably set in the sedimentation chamber. The upper end of the scraper shaft extends to the outside of the tertiary air duct and is connected to the output shaft of the scraper motor. The scraper plate is located in the sedimentation chamber. The scraper plate is fixed to the scraper shaft through the connecting rod. The side of the scraper plate away from the connecting rod abuts against the wear-resistant plate.

[0011] Furthermore, the number of the scraper plates is two, and the two scraper plates are symmetrically arranged.

[0012] Furthermore, a sealing ring is provided at the connection between the rotating shaft and the tertiary air duct.

[0013] Beneficial effects of the utility model:

[0014] The utility model is provided with a settling chamber below the tertiary air duct, the upper part of the settling chamber is communicated with the tertiary air duct, the discharge port of the settling chamber is connected with the C5 discharge pipe, and an air lock valve is provided on the settling chamber at the discharge port. The material entering the tertiary air duct from the kiln head cover of the cement kiln falls into the settling chamber under the action of gravity, and falls into the C5 discharge pipe after passing through the air lock valve, thereby realizing effective recovery and reuse of the material. Compared with the existing technology, it can avoid the process state change caused by the accumulation of material in the flat section of the tertiary air duct affecting the ventilation area, and at the same time reduce the risk of scalding caused by staff cleaning the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic diagram of the structure of some embodiments of the present application;

[0017] Figure 2 are cross-sectional views of some embodiments of the present application;

[0018] The reference numerals are:

[0019] 1. Tertiary air duct; 2. C5 discharge pipe; 3. Sedimentation chamber; 31. Discharge port; 4. Air lock valve; 5. Anti-wear component; 51. Wear-resistant plate; 52. Support connector; 6. Insulation cotton; 7. Scraper component; 71. Mounting frame; 72. Scraper motor; 73. Scraper shaft; 74. Connecting rod; 75. Scraper plate; 8. Sealing ring. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0025] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances. Specific embodiment:

[0027] like Figure 1 and Figure 2 As shown, the present application provides a settling chamber for a tertiary air duct, comprising a tertiary air duct 1 connected to the kiln head cover of the cement kiln and a C5 discharge pipe 2 connected to the C5 level cyclone of the preheater, wherein the C5 discharge pipe 2 is an important component of the preheater system in the cement production process, which is located below the C5 level cyclone of the preheater and is used to transport the preheated raw material to the rotary kiln. A settling chamber 3 is provided below the tertiary air duct 1, and the upper part of the settling chamber 3 is connected to the tertiary air duct 1. In this embodiment, the distance between the settling chamber 3 and the kiln head cover of the cement kiln is 0.5 m, a discharge port 31 is provided at the lower part of the sedimentation chamber 3, and the discharge port 31 is connected to the C5 discharge pipe 2. A wind lock valve 4 is provided at the discharge port 31 on the sedimentation chamber 3, and an anti-wear component 5 is provided in the sedimentation chamber 3. The material entering the tertiary air duct 1 from the kiln head cover of the cement kiln falls into the sedimentation chamber 3 under the action of gravity, and falls into the C5 discharge pipe 2 after passing through the wind lock valve 4, thereby realizing effective recovery and reuse of the material. Compared with the existing technology, it can avoid the process state change caused by the accumulation of material in the flat section of the tertiary air duct 1 affecting the ventilation area, and at the same time reduce the risk of scalding caused by cleaning materials for on-site personnel.

[0028] like Figure 2 As shown, the anti-wear component 5 includes a wear-resistant plate 51 and a plurality of supporting connectors 52. The wear-resistant plate 51 is fixed in the sedimentation chamber 3 through the plurality of supporting connectors 52. The wear-resistant plate 51 is adapted to the inner wall of the sedimentation chamber 3 to form an inner lining. Through the setting of the anti-wear component 5, the flow and impact of the material in the sedimentation chamber 3 are prevented from causing wear to the inner wall, thereby extending the service life of the sedimentation chamber 3.

[0029] like Figure 2 As shown, heat insulating cotton 6 is filled between the wear-resistant plate 51 and the inner wall of the sedimentation chamber 3. The provision of the heat insulating cotton 6 prevents workers from accidentally touching the sedimentation chamber 3 and getting burned.

[0030] like Figure 1 and Figure 2 As shown, the air lock valve 4 is a double-flap air lock valve 4, which prevents the air flow from backflowing at the discharge port 31 and ensures the stability and reliability of the discharge. In this embodiment, the air lock valve 4 is a double-layer heavy hammer flap air lock valve 4, which is the existing technology and will not be described here.

[0031] like Figure 1 and Figure 2 As shown, the sedimentation chamber 3 also includes a scraper assembly 7, which is used to scrape the material adhering to the wear-resistant plate 51 to prevent the material from adhering to the wear-resistant plate 51 in the sedimentation chamber 3 and causing material accumulation, thereby affecting the flow and sedimentation effect of the material.

[0032] like Figure 1 and Figure 2As shown, the scraper assembly 7 includes a mounting frame 71, a scraper motor 72, a scraper shaft 73, a connecting rod 74 and a scraper plate 75. The scraper motor 72 is fixed on the tertiary air duct 1 through the mounting frame 71, and the scraper shaft 73 is rotatably set in the sedimentation chamber 3. The upper end of the scraper shaft 73 extends to the outside of the tertiary air duct 1 and is connected to the output shaft of the scraper motor 72. The scraper plate 75 is located in the sedimentation chamber 3. The scraper plate 75 is fixed on the scraper shaft 73 through the connecting rod 74. The side of the scraper plate 75 away from the connecting rod 74 abuts against the wear-resistant plate 51. The scraper shaft 73 driven by the scraper motor 72 drives the connecting rod 74 to rotate, and then drives the scraper plate 75 to rotate, and the material adhering to the wear-resistant plate 51 is scraped off by the scraper plate 75.

[0033] like Figure 2 As shown, two scraping plates 75 are provided, and the two scraping plates 75 are symmetrically arranged to improve scraping efficiency.

[0034] like Figure 2 As shown, a sealing ring 8 is provided at the connection between the rotating shaft and the tertiary air duct 1 to prevent air leakage and prevent material leakage from causing dust and polluting the environment.

[0035] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A settling chamber for a tertiary air duct, characterized by: It includes a tertiary air duct connected to the kiln head cover of the cement kiln and a C5 discharge pipe connected to the C5 cyclone of the preheater. A sedimentation chamber is provided below the tertiary air duct. The upper part of the sedimentation chamber is connected to the tertiary air duct. The lower part of the sedimentation chamber is provided with a discharge port, which is connected to the C5 discharge pipe. A lock valve is provided on the sedimentation chamber at the discharge port, and an anti-wear component is provided in the sedimentation chamber.

2. A settling chamber for a tertiary air duct according to claim 1, characterized in that: The anti-wear assembly includes a wear-resistant plate and a plurality of supporting connectors. The wear-resistant plate is fixed in the sedimentation chamber through the plurality of supporting connectors. The wear-resistant plate is adapted to the inner wall of the sedimentation chamber to form an inner lining.

3. A settling chamber for a tertiary air duct according to claim 2, characterized in that: The space between the wear-resistant plate and the inner wall of the sedimentation chamber is filled with heat insulation cotton.

4. A settling chamber for a tertiary air duct according to claim 3, characterized in that: The air lock valve is a double-flap air lock valve.

5. A settling chamber for a tertiary air duct according to claim 4, characterized in that: It also includes a scraper assembly, which is used to scrape the material adhered to the wear-resistant plate.

6. A settling chamber for a tertiary air duct according to claim 5, characterized in that: The scraper assembly includes a mounting frame, a scraper motor, a scraper shaft, a connecting rod and a scraper plate. The scraper motor is fixed to the tertiary air duct through the mounting frame. The scraper shaft is rotatably set in the sedimentation chamber. The upper end of the scraper shaft extends to the outside of the tertiary air duct and is connected to the output shaft of the scraper motor. The scraper plate is located in the sedimentation chamber. The scraper plate is fixed to the scraper shaft through the connecting rod. The side of the scraper plate away from the connecting rod abuts against the wear-resistant plate.

7. A settling chamber for a tertiary air duct according to claim 6, characterized in that: The number of the scraping plates is two and the two scraping plates are symmetrically arranged.

8. The settling chamber for a tertiary air duct according to claim 6, characterized in that: A sealing ring is provided at the connection between the rotating shaft and the tertiary air duct.

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