Magnesite-carbon brick fastened

Abstract

The utility model provides a fastening installation's magnesium -carbon brick, including brick body and tab, the side surface of left and right sides of brick body is separately determined the cooperation and inserts the slot, the tab is fixed on the end face of the upper end of brick body, the end face on the lower end of brick body is equipped with the recess, the recess is matched with tab. The utility model discloses through the cooperation of left and right side inserts the slot and realizes the transverse fastening of the same layer brick body, avoids the displacement in layer brick body, realizes the longitudinal mechanical occlusion of adjacent two layers of bricks through the cooperation of upper and lower end tab and recess, solves the problem that traditional interlayer only relies on gravity and mud bonding easy loosening, ensures that brick body long -time fastening installation, prolongs the service life of high temperature cellar furnace.

Description

Technical Field

[0001] This utility model relates to the field of magnesia-carbon brick technology, and in particular to a magnesia-carbon brick for fastening installation. Background Technology

[0002] In high-temperature industries such as metallurgy and chemical engineering, magnesia-carbon bricks, with their excellent high-temperature resistance, erosion resistance, and thermal shock stability, have become a key refractory material for lining various high-temperature kilns. To ensure the structural stability and service life of the kiln lining, the tightness of the magnesia-carbon brick installation is crucial. Currently, existing technologies for securing magnesia-carbon bricks primarily focus on the connection and fixation between bricks within the same layer. This typically involves using tenons and grooves on the sides of the bricks to engage, or filling the layers with refractory mortar during construction to achieve interlocking and securing. However, the current method relies mainly on the weight of adjacent brick layers and the bonding force of the interlayer refractory mortar for relative fixation. Under high-temperature conditions, with frequent heating and cooling of the kiln, the stress generated by thermal expansion and contraction can easily lead to gaps between layers, causing the bricks to loosen and shift. In severe cases, this can even cause the lining structure to collapse, significantly shortening the kiln's service life and increasing production and maintenance costs. Summary of the Invention

[0003] To address the above problems, this utility model provides a magnesia-carbon brick for secure installation.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A fastening installation of a magnesia-carbon brick includes a brick body and a protrusion. The left and right sides of the brick body are respectively provided with matching inserts and slots. The protrusion is fixed to the upper end face of the brick body, and the lower end face of the brick body is provided with a groove that matches the protrusion.

[0005] Preferably, the protrusion is disposed near the rear side of the brick body, the protrusion is disposed along the thickness direction of the brick body, the rear side of the protrusion is flush with the rear side of the brick body, the cross-section of the protrusion is a right trapezoid, and the inclined surface of the protrusion is connected to the rounded end face of the upper end of the brick body.

[0006] Preferably, the insert is positioned near the upper end of the brick body, the insert is a strip-shaped block, and the side of the insert away from the brick body is an arc-shaped surface.

[0007] Preferably, the brick body is further provided with strip-shaped locking blocks and corresponding locking slots, and the locking blocks and locking slots are respectively disposed on the left and right sides of the brick body.

[0008] Preferably, the card block is disposed below the insert block, the upper end of the card block is connected to the lower surface of the insert block, the upper end of the card slot is connected to the slot, and the card block and the insert block are perpendicular to each other.

[0009] Preferably, the card block and the card slot are disposed opposite to each other on the left and right sides of the brick body.

[0010] Preferably, the sides of the card block away from the brick body are chamfered.

[0011] Preferably, the brick body and the protrusion are integrally connected.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves lateral fastening of the same layer of bricks by the cooperation of the left and right side inserts and slots, avoiding displacement of bricks within the layer; and achieves longitudinal mechanical interlocking of adjacent layers of bricks by the cooperation of the upper and lower end protrusions and grooves, solving the problem of easy loosening of traditional interlayer bonding by gravity and mortar alone, ensuring that the bricks are firmly installed for a long time and extending the service life of the high-temperature kiln. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a magnesia-carbon brick for fastening installation according to the present invention. Figure 2 This is a front view of a magnesia-carbon brick for fastening installation according to this utility model; Figure 3 This is a cross-sectional view (AA) of a magnesia-carbon brick for fastening installation according to this utility model. Detailed Implementation

[0014] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0015] Please refer to the reference. Figure 1 , Figure 2 , Figure 3 This utility model discloses a fastening installation method for magnesia-carbon bricks, comprising a brick body 100 and protrusions 200. The left and right sides of the brick body 100 are respectively provided with mating inserts 110 and slots 120. The mating of the inserts 110 and slots 120 achieves lateral fastening of the same layer of bricks, preventing displacement of bricks within the layer. The protrusions 200 are fixed to the upper end face of the brick body 100, and the lower end face of the brick body 100 is provided with a groove 130 that matches the protrusions 200. During installation, the mating of the upper and lower protrusions 200 and the grooves 130 achieves longitudinal mechanical interlocking between adjacent layers of bricks, solving the problem of easy loosening caused by traditional interlayer bonding relying solely on gravity and mortar.

[0016] The protrusion 200 is positioned near the rear side of the brick body 100, and its rear side is flush with the rear side of the brick body 100 to prevent damage from impacts during installation or use due to protrusion from the brick edge. The cross-section of the protrusion 200 is a right-angled trapezoid, with the bottom of the protrusion 200 being the long side of the right-angled trapezoid. The length of the long side of the right-angled trapezoid is less than the width of the brick body 100. The protrusion 200 is positioned along the thickness direction of the brick body 100, and its front-to-back length is the same as the thickness of the brick body 100, ensuring aesthetics. When installed in a blast furnace, the blast furnace is flat inside and out. It facilitates interlayer fastening installation. The right-angled trapezoidal cross-section design ensures directional engagement between the protrusion and the groove, preventing interlayer misalignment. The inclined surface of the protrusion 200 connects to the rounded end face of the upper end of the brick body 100. This reduces stress concentration, preventing cracking at the root of the protrusion 200 due to thermal expansion and contraction at high temperatures, and improving structural durability. The brick body 100 is made of magnesia-carbon brick, which has excellent high temperature resistance and erosion resistance. When installed in a blast furnace, the rear side of the brick body 100 faces the outside of the blast furnace, avoiding the inside of the blast furnace. High temperature or molten steel erosion can cause the protrusions to wear down and prevent continuous interlocking, thus improving the durability of the blast furnace.

[0017] The insert 110 is positioned near the upper end of the brick body. The insert 110 is a strip-shaped block, ensuring high connection strength between the insert 110 and the brick body 100 and preventing it from falling off. The insert 110 is positioned along the width direction of the brick body 100, and its length is the same as the width of the brick body 100, ensuring a stable connection within the layer. The strip-shaped structure enhances the stability of the lateral connection. The side of the insert 110 away from the brick body is an arc-shaped surface 111. This arc-shaped surface design reduces mechanical wear when the insert is inserted into the slot.

[0018] The brick body 100 is also provided with a strip-shaped locking block 140 and a corresponding locking groove 150, which are respectively located on the left and right sides of the brick body 100. The secondary connection of the locking block 140 and locking groove 150, based on the insertion block 110 and slot 120, forms a double lateral fastening structure. This solves the problem of loosening that may occur under long-term high-temperature conditions with a single insertion block connection, further improving the integrity and shear resistance of the brick body within the layer. If the force on the brick body in the front-to-back direction exceeds the bearing capacity of the protrusion 200, the protrusion 200 may fall off and become damaged, unable to engage, leading to loosening between layers.

[0019] The locking block 140 is positioned below the insert block 110, with its upper end connected to the lower surface of the insert block 110. The upper end of the locking groove 150 connects to the slot 120. The locking block 140 and the insert block 110 are perpendicular to each other. The connection between the insert block 110 and the locking block 140 ensures the strength of the brick body and improves its load-bearing capacity. Its vertical positioning provides both horizontal and vertical limiting capabilities within the layer, resisting multi-dimensional external force impacts and ensuring a secure installation of bricks between and within layers, preventing loosening.

[0020] The locking blocks 140 and the locking slots 150 are disposed opposite to each other on the left and right sides of the brick body 100. This ensures that the locking blocks 140 and locking slots 150 of adjacent bricks can be precisely matched, realizing bidirectional interlocking of bricks within the layer and avoiding connection failure due to misalignment.

[0021] The sides of the locking block 140 away from the brick body 100 are chamfered. This reduces the frictional resistance when the locking block 140 is inserted into the slot 150, making installation and alignment easier; at the same time, it avoids stress concentration at the edge of the locking block 140 due to its sharp structure under force or thermal expansion, preventing edge chipping of the locking block 140 or cracking of the slot, and improving the durability of the connection structure.

[0022] The brick body 100 and the protrusion 200 are integrally connected. This eliminates the connection interface between the brick body 100 and the protrusion 200, avoiding the problem of weak interface strength caused by separate connection, ensuring that the protrusion 200 will not break due to connection failure, and improving the reliability of the longitudinal connection and the overall strength of the brick body.

[0023] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. It must be noted that the disclosed embodiments do not limit the scope of this utility model. Conversely, any modifications and refinements made without departing from the spirit and scope of this utility model are within the scope of patent protection of this utility model.

Claims

1. A magnesia-carbon brick for fastening installation, characterized in that: The device includes a brick body and a protrusion. The left and right sides of the brick body are respectively provided with matching inserts and slots. The protrusion is fixed to the upper end face of the brick body, and a groove is provided on the lower end face of the brick body, the groove matching the protrusion. The protrusion is located near the rear side of the brick body, along the thickness direction of the brick body, and its rear side is flush with the rear side of the brick body. The cross-section of the protrusion is a right-angled trapezoid, and the inclined surface of the protrusion connects to the rounded corner of the upper end face of the brick body. The brick body also has a strip-shaped locking block and a corresponding locking groove, respectively located on the left and right sides of the brick body. The locking block is located below the insert, its upper end connecting to the lower surface of the insert, and the upper end of the locking groove connecting to the slot. The locking block and the insert are perpendicular to each other.

2. The magnesia-carbon brick with fastening installation as described in claim 1, characterized in that: The insert is positioned near the upper end of the brick body, and the insert is a strip-shaped block with an arc-shaped side away from the brick body.

3. The magnesia-carbon brick with fastening installation as described in claim 1, characterized in that: The card block and the card slot are disposed opposite to each other on the left and right sides of the brick body.

4. The magnesia-carbon brick with fastening installation as described in claim 1, characterized in that: The sides of the card block away from the brick body are chamfered.

5. The magnesia-carbon brick with fastening installation as described in claim 1, characterized in that: The brick body and the protrusion are integrally connected.

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