Hearth protection brick plate for double-hearth lime kiln

Abstract

The utility model provides a hearth brick protecting plate for a double-hearth lime kiln, which comprises a plurality of arc-shaped plates, the arc-shaped plates are uniformly laid at intervals along the inner wall of a hearth, the arc-shaped plates are welded and connected with a kiln shell steel structure at the top of the hearth, an expansion gap is reserved between every two adjacent arc-shaped plates, and a connecting cover plate is arranged at the position of each expansion gap. According to the utility model, by arranging the sectional brick protecting plates, the problems of construction conflict and unsoldering caused by thermal expansion of the brick protecting plates are avoided, and the construction efficiency can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of double-chamber lime shaft kilns, in particular to a furnace brick guard plate for a double-chamber lime kiln. Background Art

[0002] Due to its energy-saving, environmental protection and compact structure, double-chamber lime shaft kiln has been widely promoted and applied in quicklime production.

[0003] When the double-chamber lime kiln is producing quicklime normally, the limestone blocks will collide with the top refractory bricks, the gas ring castables and the refractory wool, thus damaging their structure. The brick guard is a ring-shaped steel structure used to protect the top refractory bricks and other refractory materials. Without the brick guard structure, the top layer of refractory wool will be directly in contact with the airflow and materials, thus being damaged. Limestone will be stuffed into the gap, resulting in the vertical expansion space of the refractory bricks being occupied. The gas ring castables will also be smashed by limestone blocks, causing the high-temperature airflow to directly contact the insulation layer and the furnace shell. In addition, the stone can easily smash the corners of the top refractory bricks, resulting in damage to the working layer.

[0004] However, the existing circular furnace brick plate structure is a full-circle structure. On the one hand, for the convenience of construction, the steel structure has been welded in advance before masonry, and the steel plate needs to be separated during masonry, which will affect the construction progress and cause conflicts. On the other hand, the working environment of the brick plate is about 700℃, and the problem of brick plate desoldering due to thermal expansion is not considered. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a furnace brick guard plate for a double-chamber lime kiln in view of the above-mentioned existing problems.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a furnace brick guard plate for a double-chamber lime kiln, characterized in that it includes a plurality of arc-shaped plates, the plurality of arc-shaped plates are evenly laid along the inner wall of the furnace, the plurality of arc-shaped plates are welded to the kiln shell steel structure at the top of the furnace, and an expansion joint is left between two adjacent arc-shaped plates.

[0007] According to the above scheme, a connecting cover plate is provided at the position corresponding to the expansion joint, and the connecting cover plate is an L-shaped right-angle bent plate, which fits with the inner wall and top surface of the arc plate on both sides of the expansion joint.

[0008] According to the above solution, the number of the arc-shaped plates is 4-8.

[0009] According to the above solution, the width of the expansion joint is 45-55 mm.

[0010] According to the above solution, the width of the connecting cover plate is 1.5-2 times the width of the expansion joint.

[0011] According to the above solution, the connecting cover plate is only connected to one of the arc-shaped plates on both sides of the expansion joint by welding.

[0012] The beneficial effects of the utility model are as follows: providing a furnace brick guard plate for a double-chamber lime kiln, adopting a multi-section assembly method, leaving an expansion joint between two adjacent arc-shaped plates to prevent the brick guard plate from expanding and becoming unwelded due to heat during operation; at the same time, a connecting cover plate is used to cover the expansion joint to ensure that the working surface of the brick guard plate is intact and does not affect the function of the expansion joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of the installation of an embodiment of the utility model.

[0015] Figure 2 The present invention is a schematic structural diagram of a brick guard plate according to an embodiment of the present invention.

[0016] Figure 3 for Figure 2 A partial enlarged view of .

[0017] Among them: 1-arc plate, 2-kiln shell steel structure, 3-expansion joint, 4-connecting cover plate. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] 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 which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0020] 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, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0024] The features and performance of the present application are further described in detail below in conjunction with the embodiments.

[0025] like Figure 1-Figure 3 As shown, the furnace brick guard plate for a double-chamber lime kiln includes a plurality of arc plates 1, which are evenly laid along the inner wall of the furnace, and are welded to a kiln shell steel structure 2 on the top of the furnace, and an expansion joint 3 is left between two adjacent arc plates.

[0026] A connecting cover plate 4 is provided at the position corresponding to the expansion joint. The connecting cover plate is an L-shaped right-angle bent plate, which fits the inner wall and top surface of the arc plates on both sides of the expansion joint. The connecting cover plate is only welded to one of the arc plates on both sides of the expansion joint. The brick guard plate is installed on the steel structure of the kiln shell in sections to avoid the brick guard plate from being desoldered and deformed due to thermal expansion. The connecting cover plate is installed on the brick guard plate and is only welded to one section of the brick guard plate, so that the brick guard plate is complete and the basic function of the expansion joint remains unchanged.

[0027] The number of curved plates can be 4-8, and each curved plate is welded to the kiln shell steel structure in turn. The distance between each curved plate on the circumference is reserved according to the designed expansion joint width. During construction, it can be divided into masonry sections to avoid construction conflicts and delays in construction progress.

[0028] The width of the expansion joint is 45-55mm, and the width of the connecting cover is 1.5-2 times the width of the expansion joint. The width of the expansion joint needs to be calculated based on the linear expansion coefficient of the corresponding material.

[0029] The brick guard plate is a masonry component and its installation should be divided into masonry sections. It can only be installed after the refractory wool filling is completed and the refractory materials are accepted.

Claims

1. A furnace brick guard plate for a double-chamber lime kiln, characterized in that: The invention comprises a plurality of arc plates which are evenly laid along the inner wall of the furnace and connected to the kiln shell steel structure on the top of the furnace by welding, and an expansion joint is left between two adjacent arc plates.

2. The furnace brick guard plate for a double-chamber lime kiln according to claim 1, characterized in that: A connecting cover plate is provided at a position corresponding to the expansion joint. The connecting cover plate is an L-shaped right-angle bent plate, which fits with the inner wall and top surface of the arc plate on both sides of the expansion joint.

3. The furnace brick guard plate for a double-chamber lime kiln according to claim 2, characterized in that: The number of the arc-shaped plates is 4-8.

4. The furnace brick guard plate for a double-chamber lime kiln according to claim 2, characterized in that: The width of the expansion joint is 45-55 mm.

5. The furnace brick guard plate for a double-chamber lime kiln according to claim 2, characterized in that: The width of the connecting cover plate is 1.5-2 times the width of the expansion joint.

6. The furnace brick guard plate for a double-chamber lime kiln according to claim 2 or 5, characterized in that: The connecting cover plate is only connected to one of the arc-shaped plates on both sides of the expansion joint by welding.

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