Refractory sintering kiln

Abstract

The utility model relates to sintering furnace technical field especially relates to a kind of refractory sintering furnace, including kiln body, the furnace chamber is equipped in the kiln body interior, the furnace chamber side wall is equipped with heat preservation layer, the heat preservation layer is composed of multiple heat preservation templates, the heat preservation template is installed on the furnace chamber inner wall by detachable installation component, the outer layer of the heat preservation template is wrapped with outer layer protection plate, the heat preservation template side edge is wrapped with elastic refractory buffer strip, the elastic refractory buffer strip on two adjacent the heat preservation templates is closely contacted, the furnace chamber inner wall is fixedly installed with the sealing strip of U type, the sealing strip is installed in heat preservation layer directly above. The utility model designs several heat preservation templates for heat preservation layer, and elastic refractory buffer strip is equipped between adjacent heat preservation templates, the stress that the elastic refractory buffer strip can absorb heat preservation template under high temperature due to thermal expansion and contraction, avoid adjacent heat preservation template to cause to fall off by mutual extrusion or pulling.

Description

Technical Field

[0001] This utility model relates to the field of sintering kiln technology, and in particular to a refractory sintering kiln. Background Technology

[0002] As the core equipment in the refractory material production process, the performance of the refractory sintering kiln plays a decisive role in product quality and production cost. Among the many performance indicators, thermal insulation performance occupies a key position. It not only directly affects the core quality parameters such as temperature uniformity and crystallinity of refractory materials during high-temperature sintering, but is also closely related to energy consumption in the production process.

[0003] The insulation layer of existing kilns is mostly installed on the inner wall of the kiln by integral casting or adhesive bonding. During the high-temperature sintering process, the insulation layer will generate a large stress due to thermal expansion and contraction. The integral structure cannot release the stress, which easily leads to the insulation layer falling off. The fallen insulation material not only affects the temperature uniformity inside the kiln, but may also lead to a decrease in the stability of the sintering temperature, thereby affecting the sintering quality of the refractory material. Utility Model Content

[0004] The purpose of this utility model is to solve the following shortcomings in the existing technology: during the high-temperature sintering process, the insulation layer will generate large stress due to thermal expansion and contraction, and the integral structure cannot release the stress, which easily leads to the phenomenon of insulation layer falling off. The fallen insulation material not only affects the temperature uniformity inside the kiln, but may also lead to a decrease in the stability of the sintering temperature, thereby affecting the sintering quality of the refractory material. Therefore, a refractory material sintering kiln is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A refractory sintering kiln includes a kiln body, a furnace chamber inside the kiln body, and a heat insulation layer installed on the side wall of the furnace chamber. The heat insulation layer is composed of multiple heat insulation templates, which are installed on the inner wall of the furnace chamber by a detachable mounting assembly.

[0007] The outer layer of the insulation template is wrapped with an outer protective plate, and the sides of the insulation template are wrapped with elastic fire-resistant buffer strips. The elastic fire-resistant buffer strips on two adjacent insulation templates are in close contact. A U-shaped sealing strip is fixedly installed on the inner wall of the furnace chamber, and the sealing strip is installed directly above the insulation layer.

[0008] Preferably, the installation assembly includes an installation block, a positioning insert, and a connecting bolt. The installation block is fixedly installed on the inner wall of the furnace chamber. The installation block has a positioning slot. The positioning insert is inserted into the positioning slot. The insulation template is integrally formed with the positioning insert. An insertion hole is formed through the insulation template and the positioning insert. The inner wall of the positioning slot has a threaded groove that matches the connecting bolt. One end of the connecting bolt passes through the insertion hole and is threaded into the threaded groove.

[0009] Preferably, the positioning plug has movable holes on both sides that communicate with the insertion hole, and the inner walls on both sides of the positioning slot have positioning grooves. A positioning pin is installed in each of the two movable holes through an elastic component. One end of the positioning pin is inserted into the positioning groove. The cross-section of the positioning pin is a right trapezoid, and the inclined end of the positioning pin abuts against the side of the connecting bolt.

[0010] Preferably, the elastic component includes a spring rod horizontally fixedly mounted on a positioning pin, and one end of the spring rod is fixedly connected to the inner wall of the moving hole via a connecting block.

[0011] Preferably, a placement plate is installed in the furnace chamber via a rotating assembly, and the placement plate is located in the center of the furnace chamber.

[0012] Preferably, the upper end of the kiln body is provided with a rotating hole that communicates with the furnace chamber. The rotating assembly includes a rotating shaft that is vertically rotatably installed in the rotating hole and a drive motor that is fixedly installed on the upper end of the kiln body. One end of the output shaft of the drive motor is fixedly connected to one end of the rotating shaft, and the lower end of the rotating shaft is fixedly connected to the center position of the placement plate.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The insulation layer is designed as several insulation templates, and an elastic fire-resistant buffer strip is provided between adjacent insulation templates. The elastic fire-resistant buffer strip can absorb the stress generated by thermal expansion and contraction of the insulation templates at high temperature, and prevent adjacent insulation templates from being squeezed or pulled to each other and falling off.

[0015] 2. The insulation layer is designed as several insulation templates, which are fixed in the furnace chamber by a detachable connection structure. When a certain insulation template is damaged, only that insulation template needs to be removed and replaced, without replacing the entire insulation layer, which greatly reduces maintenance costs and material waste. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a refractory sintering kiln proposed in this utility model;

[0017] Figure 2 A three-dimensional structural diagram of the insulation layer, rotating components, and placement plate;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the thermal insulation template;

[0019] Figure 4 A schematic diagram of the three-dimensional cross-sectional structure of the insulation template and installation components;

[0020] Figure 5 for Figure 4 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Kiln body, 2. Furnace chamber, 3. Drive motor, 4. Insulation template, 5. Elastic refractory buffer strip, 6. Sealing strip, 7. Mounting block, 8. Positioning insert, 9. Connecting bolt, 10. Positioning pin, 11. Spring rod, 12. Placement plate, 13. Rotating shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1 A refractory sintering kiln includes a kiln body 1, a furnace chamber 2 inside the kiln body 1, an insulation layer installed on the side wall of the furnace chamber 2, the insulation layer being composed of multiple insulation templates 4, the insulation templates 4 being installed on the inner wall of the furnace chamber 2 via detachable installation components, the outer layer of the insulation templates 4 being wrapped with an outer protective plate, the sides of the insulation templates 4 being wrapped with elastic refractory buffer strips 5, the elastic refractory buffer strips 5 on two adjacent insulation templates 4 being in close contact, and a U-shaped sealing strip 6 being fixedly installed on the inner wall of the furnace chamber 2, the sealing strip 6 being installed directly above the insulation layer.

[0024] Reference Figure 3 The insulation template 4 is made of lightweight high-alumina refractory bricks and ceramic fiber cotton. The lightweight high-alumina refractory bricks have good high temperature resistance and insulation performance, and the ceramic fiber cotton can further improve the insulation effect. The outer protective plate is made of heat-resistant steel, which can withstand the high temperature environment inside the kiln and protect the internal refractory insulation layer, reducing the damage to the refractory insulation layer caused by external factors. The elastic refractory buffer strip 5 is made of aluminum silicate fiber and refractory adhesive. Aluminum silicate fiber has excellent high temperature resistance and elasticity, and the refractory adhesive can ensure the structural stability of the buffer strip. The buffer strip can effectively absorb the stress generated by the insulation template 4 during thermal expansion and contraction, and avoid damage or detachment caused by mutual squeezing or pulling between insulation units.

[0025] Reference Figure 4The installation components include an installation block 7, a positioning insert 8, and a connecting bolt 9. The installation block 7 is fixedly installed on the inner wall of the furnace chamber 2. The installation block 7 has a positioning slot, and the positioning insert 8 is inserted into the positioning slot. The insulation template 4 and the positioning insert 8 are integrally formed. An insertion hole is provided between the insulation template 4 and the positioning insert 8. The inner wall of the positioning slot has a threaded groove that matches the connecting bolt 9. One end of the connecting bolt 9 passes through the insertion hole and is threaded into the threaded groove.

[0026] During installation, the positioning block 8 on the insulation template 4 is inserted into the positioning slot, and then the connecting bolt 9 is inserted into the insertion hole and threaded into the threaded groove. The insulation template 4 is fixed in the furnace chamber 2 through the detachable connection structure. When a certain insulation template 4 is damaged, only the insulation template 4 needs to be disassembled and replaced. There is no need to replace the entire insulation layer, which greatly reduces maintenance costs and material waste.

[0027] Reference Figure 5 The positioning plug 8 has movable holes on both sides that communicate with the insertion hole. The inner walls of both sides of the positioning slot have positioning grooves. The two movable holes are equipped with positioning pins 10 through elastic components. One end of the positioning pin 10 is inserted into the positioning groove. The cross-section of the positioning pin 10 is a right trapezoid. The inclined end of the positioning pin 10 abuts against the side of the connecting bolt 9. The elastic component includes a spring rod 11 that is horizontally fixed on the positioning pin 10. One end of the spring rod 11 is fixedly connected to the inner wall of the movable hole through a connecting block.

[0028] When the positioning block 8 is installed in the positioning slot, one end of the positioning pin 10 is aligned with the positioning slot. When the connecting bolt 9 is inserted into the socket, one end of the connecting bolt 9 abuts against the inclined surfaces of the two positioning pins 10. Under the action of the inclined surfaces, the two positioning pins 10 can be moved towards the positioning slot and inserted into the positioning slot. Under the action of the positioning pins 10, the stability of the installation of the mounting block 7 and the positioning block 8 can be further improved.

[0029] Reference Figure 2 A placement plate 12 is installed in the furnace chamber 2 via a rotating assembly. The placement plate 12 is located in the center of the furnace chamber 2. A rotating hole communicating with the furnace chamber 2 is opened at the upper end of the kiln body 1. The rotating assembly includes a rotating shaft 13 that is vertically rotatably installed in the rotating hole and a drive motor 3 that is fixedly installed at the upper end of the kiln body 1. One end of the output shaft of the drive motor 3 is fixedly connected to one end of the rotating shaft 13, and the lower end of the rotating shaft 13 is fixedly connected to the center position of the placement plate 12.

[0030] When using the sintering kiln, the objects to be fired are placed on the placement tray 12, and then the drive motor 3 is started to drive the rotating shaft 13 to rotate, thereby causing the placement tray 12 to rotate in the furnace chamber 2, so that the objects can be fired evenly.

[0031] In this invention, the elastic fire-resistant buffer strip 5 is made by mixing and pressing aluminum silicate fiber with fire-resistant adhesive. Aluminum silicate fiber has excellent high temperature resistance and elasticity, and fire-resistant adhesive can ensure the structural stability of the buffer strip. The buffer strip can effectively absorb the stress generated by the thermal insulation template 4 during thermal expansion and contraction, and avoid damage or detachment caused by mutual squeezing or pulling between thermal insulation units.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A refractory sintering kiln, comprising a kiln body (1), characterized in that, The kiln body (1) has a furnace chamber (2) inside. The side wall of the furnace chamber (2) is equipped with a heat insulation layer. The heat insulation layer is composed of multiple heat insulation templates (4). The heat insulation templates (4) are installed on the inner wall of the furnace chamber (2) by a detachable installation component. The outer layer of the insulation template (4) is wrapped with an outer protective plate. The side of the insulation template (4) is wrapped with an elastic fire-resistant buffer strip (5). The elastic fire-resistant buffer strips (5) on two adjacent insulation templates (4) are in close contact. A U-shaped sealing strip (6) is fixedly installed on the inner wall of the furnace chamber (2). The sealing strip (6) is installed directly above the insulation layer.

2. The refractory sintering kiln according to claim 1, characterized in that, The installation assembly includes an installation block (7), a positioning insert (8), and a connecting bolt (9). The installation block (7) is fixedly installed on the inner wall of the furnace chamber (2). The installation block (7) has a positioning slot. The positioning insert (8) is inserted into the positioning slot. The insulation template (4) and the positioning insert (8) are integrally formed. An insertion hole is provided between the insulation template (4) and the positioning insert (8). The inner wall of the positioning slot has a threaded groove that matches the connecting bolt (9). One end of the connecting bolt (9) passes through the insertion hole and is threaded into the threaded groove.

3. A refractory sintering kiln according to claim 2, characterized in that, The positioning plug (8) has movable holes on both sides that are connected to the insertion hole. The inner walls of both sides of the positioning slot have positioning grooves. The two movable holes are fitted with positioning pins (10) by elastic components. One end of the positioning pin (10) is inserted into the positioning groove. The cross-section of the positioning pin (10) is a right trapezoid. The inclined end of the positioning pin (10) abuts against the side of the connecting bolt (9).

4. A refractory sintering kiln according to claim 3, characterized in that, The elastic component includes a spring rod (11) that is horizontally fixed on a positioning pin (10), and one end of the spring rod (11) is fixedly connected to the inner wall of the moving hole through a connecting block.

5. A refractory sintering kiln according to claim 1, characterized in that, A placement plate (12) is installed in the furnace chamber (2) via a rotating assembly, and the placement plate (12) is located in the center of the furnace chamber (2).

6. A refractory sintering kiln according to claim 5, characterized in that, The upper end of the kiln body (1) is provided with a rotating hole that communicates with the furnace chamber (2). The rotating component includes a rotating shaft (13) that is vertically rotatably installed in the rotating hole and a drive motor (3) that is fixedly installed on the upper end of the kiln body (1). One end of the output shaft of the drive motor (3) is fixedly connected to one end of the rotating shaft (13), and the lower end of the rotating shaft (13) is fixedly connected to the center position of the placement plate (12).

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