Smoke chamber protection movable steel frame structure in preheater of rotary cement kiln

Abstract

The utility model relates to a smoke chamber protection movable steel frame structure in a preheater of a rotary cement kiln, which comprises a decomposing furnace structure and a smoke chamber structure in the preheater of the rotary cement kiln, and one or more groups of protection movable mounting steel frame body structures are arranged between the decomposing furnace structure and the smoke chamber structure. The protective movable installation steel frame body structure comprises a hollow outer cover body matched with the decomposition furnace structure and the smoke chamber structure in the vertical shape, and opposite butt joint installation hole sets are formed in a pair of vertical faces arranged in the outer cover body. A supporting piece group is arranged between the opposite butt joint mounting hole groups; and an access door body is arranged in the outer cover body. According to the structure, a smoke chamber safety protection frame is a combined steel frame; and the frame is erected outside the smoke chamber, so that the safety problem of erecting a first layer of safety protection frame when a frame worker enters the smoke chamber is solved, and meanwhile, normal production is not influenced. The steel structure is reasonable in structure, simple to erect, labor-saving, economical and practical, and the strength of the steel structure meets the safety protection requirement of the smoke chamber.

Description

Technical Field

[0001] The utility model relates to the field of cement rotary kilns, in particular to a smoke chamber protection movable steel frame structure in a cement rotary kiln preheater. Background Technique

[0002] The preheater system of a cement rotary kiln mainly consists of cyclones, a decomposition furnace, a smoke chamber and connecting pipes. There is a layer of refractory material protection layer inside these devices, which will be damaged to varying degrees after a period of production. If the equipment shell is not repaired without stopping the kiln, it will be burned out or worn through.

[0003] The smoke chamber is located in the lower layer of the preheater, connected to the decomposition furnace above and the rotary kiln below. After the materials are pre-decomposed through the decomposition furnace and cyclones, they enter the kiln through the smoke chamber to be burned into clinker. The materials move from top to bottom, and the high-temperature gas in the kiln moves from bottom to top and converges in the smoke chamber, so the refractory materials inside it are extremely easy to be damaged. When repairing the refractory materials in the smoke chamber and the kiln tail, in order to prevent the refractory materials or crusts on the top and around of the decomposition furnace from falling off and causing harm to the construction workers below, we will set up a double-layer protective frame above the smoke chamber to protect the safety of the construction workers.

[0004] The decomposition furnace is a circular cylindrical device with a top diameter of 7.2 meters and an area of about 40 square meters. The weight of the top castable is about 20 tons, and the height drop is 35 - 38 meters. If the top castable or crust of the decomposition furnace falls off during the repair of the smoke chamber, the construction workers will be in danger of life. Now it has reached a consensus in the industry to set up a double-layer safety protective frame with building steel pipes above the smoke chamber. The height between the first layer and the second layer is 40 - 50 centimeters. Such a safety protective frame is set up from the bottom of the smoke chamber upwards. Then the problem comes. When setting up the first layer of the protective frame, the steelworkers have no safety protection. How to ensure the safety of the steelworkers and set up the first layer of the safety protective frame is the problem to be solved by the utility model. Content of the Utility Model

[0005] The purpose of the utility model is to provide a smoke chamber protection movable steel frame structure in a cement rotary kiln preheater to solve the problem of how to ensure the safety of steelworkers when setting up the first layer of the protective frame.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a smoke chamber protection movable steel frame structure in a cement rotary kiln preheater, including a decomposition furnace structure and a smoke chamber structure in the cement rotary kiln preheater. One group or more groups of protective movable installation steel frame body structures are arranged between the decomposition furnace structure and the smoke chamber structure. The protective movable installation steel frame body structure includes a hollow outer cover body that matches the upper and lower outer shapes of the decomposition furnace structure and the smoke chamber structure, a pair of opposite docking installation hole groups are arranged in a pair of vertical surfaces inside the outer cover body, a support member group is arranged between the opposite docking installation hole groups, and a maintenance door body is arranged in the outer cover body.

[0007] A filler body and an internal strengthening structure are provided in the outer cover body described above.

[0008] The support member group includes support channel steels penetrating each pair of butt joint mounting hole groups and a positioning structure arranged outside the support channel steels. The positioning structure includes positioning flange sleeves arranged outside each butt joint mounting hole group. Locking bolt mounting holes are arranged at the upper parts of the positioning flange sleeves. Positioning mounting bolt holes are arranged at the ends of the support channel steels. The positioning mounting bolt holes are connected to internal butt joint screw holes arranged inside the positioning flange sleeves through locking bolts.

[0009] An upper mounting edge seat for connecting to the bottom of the upper-layer outer cover body is provided at the top of the outer cover body described above.

[0010] Beneficial effects: This structure is a combined steel frame for the safety protection rack in the smoke chamber; the rack is erected from the outside of the smoke chamber, solving the safety problem of the steel erectors entering the smoke chamber to erect the first-layer safety protection rack, and at the same time not affecting normal production. This steel structure is reasonable, the strength meets the requirements of the safety protection of the smoke chamber, the erection is simple, labor is saved, and it is economical and practical.

[0011] The present invention will be described in more detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an installation state diagram of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the present invention.

[0014] Figure 3 It is Figure 2 a three-dimensional diagram of

[0015] Figure 4 It is Figure 3 a state diagram without the support channel steel installed.

[0016] Figure 5 It is a connection state diagram of the support channel steel.

[0017] Figure 6 It is a filling state diagram of the internal strengthening structure of the present invention.

[0018] Figure 7 It is a use state diagram of the present invention.

[0019] Figure 8 It is a schematic structural diagram of another embodiment of the present invention.

[0020] In the figure: 1. Outer casing, 2. Docking installation hole group, 3. Inspection door, 4. Filling body, 5. Support channel steel, 6. Positioning flange sleeve, 7. Locking bolt installation hole, 8. Positioning installation bolt hole, 9. Locking bolt, 10. Inner docking screw hole, 11. Upper installation edge seat, 12. Built-in support frame body, 13. Calciner structure, 14. Smoke chamber structure, 15. Sealing door body. Specific implementation manner

[0021] In the application text, the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0023] Example 1, as Figure 1-7 shown, the smoke chamber protection movable steel frame structure in the cement rotary kiln preheater includes the calciner structure and the smoke chamber structure in the cement rotary kiln preheater. Between the calciner structure 13 and the smoke chamber structure 14, one or more groups of protection movable installation steel frame body structures are provided. The protection movable installation steel frame body structure includes a hollow outer casing 1 that matches the upper and lower outer shapes of the calciner structure and the smoke chamber structure, a pair of opposite docking installation hole groups 2 are arranged in a pair of vertical surfaces inside the outer casing, a support member group is arranged between the opposite docking installation hole groups, and an inspection door body 3 is arranged in the outer casing. A sealing door body 15 is also provided outside the inspection door body 3.

[0024] A filling body 4 and an internal strengthening structure are arranged in the outer casing. The internal strengthening structure includes a built-in support frame body 12 in the outer casing 1.

[0025] The described support member group includes the support channel steel 5 passing through each pair of butt joint mounting hole groups and the positioning structure arranged outside the support channel steel. The positioning structure includes the positioning flange sleeve 6 arranged outside each butt joint mounting hole group. There is a locking bolt mounting hole 7 arranged at the upper part of the positioning flange sleeve. There is a positioning mounting bolt hole 8 arranged at the end of the support channel steel. The positioning mounting bolt hole is connected to the internal butt joint screw hole 10 arranged in the positioning flange sleeve through the locking bolt 9.

[0026] Embodiment 2, as Figure 8 shown, on the basis of Embodiment 1, for firm connection, the top of the outer cover body is provided with an upper mounting edge seat 11 connected to the bottom of the upper-layer outer cover body.

[0027] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary engineering and technical personnel in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

[0028] Parts not involved in the present invention are the same as or can be implemented by using the prior art.

Claims

1. The smoke chamber protection movable steel frame structure in the preheater of a cement rotary kiln, including the calciner structure and the smoke chamber structure in the preheater of the cement rotary kiln, is characterized in that: A set or multiple sets of protective movable installation steel frame structures are provided between the precalciner structure and the smoke chamber structure. The protective movable installation steel frame structure includes an outer cover body that is hollow and matches the outer shapes of the lower end of the precalciner structure and the upper end of the smoke chamber structure, a pair of opposite docking installation hole groups are provided in a pair of vertical surfaces inside the outer cover body, a support member group is arranged between the opposite docking installation hole groups, and a maintenance door body is provided in the outer cover body.

2. The smoke chamber protection movable steel frame structure in the cement rotary kiln preheater according to claim 1, characterized in that: A filling body and an internal strengthening structure are provided in the outer cover body.

3. The smoke chamber protection movable steel frame structure in the cement rotary kiln preheater according to claim 1, characterized in that: The support member group includes support channel steels passing through each pair of docking installation hole groups and a positioning structure arranged outside the support channel steels. The positioning structure includes positioning flange sleeves arranged outside each docking installation hole group, locking bolt installation holes are arranged at the upper part of the positioning flange sleeves, positioning installation bolt holes are arranged at the ends of the support channel steels, and the positioning installation bolt holes are connected to internal docking screw holes arranged inside the positioning flange sleeves through locking bolts.

4. The smoke chamber protection movable steel frame structure in the cement rotary kiln preheater according to claim 1, characterized in that: An upper installation edge seat for connecting to the bottom of the upper-layer outer cover body is provided at the top of the outer cover body.

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