Vertical sintering furnace for zirconia ceramic processing

Abstract

The utility model discloses a vertical sintering furnace for zirconia ceramic processing, which relates to the technical field of sintering furnace equipment and comprises a furnace body and a furnace door, a furnace car is movably arranged in the furnace body, the furnace door, the furnace car and the furnace body are mutually independent, a vertical sintering chamber is arranged in the furnace body, the furnace door is movably arranged on the furnace body, and the furnace car is arranged in the vertical sintering chamber. A moving track is arranged below the furnace body along the moving direction of the furnace door and the furnace car; a plurality of silicon molybdenum rods used for heating in the sintering chamber are suspended on the periphery in the vertical sintering chamber, so that sintering of vertical products is facilitated, and meanwhile, the independent furnace door facilitates observation of the state of the sintered products in the sintering chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnace equipment, in particular to a vertical sintering furnace for processing zirconia ceramics. Background Art

[0002] In the field of ceramic material processing, zirconia ceramics are widely used in many high-tech fields such as aerospace, medical devices, and electronic devices due to their excellent properties such as high hardness, high strength, high wear resistance, and corrosion resistance. However, the preparation process of zirconia ceramics is complex, and the sintering link is particularly crucial, which directly affects the performance and quality of the final product.

[0003] Traditional zirconia ceramic sintering furnaces mostly adopt a horizontal structure, which has many limitations in the sintering process. Firstly, the horizontal structure restricts the shape and size of the sintered products. Especially for vertical or large-sized products, it is difficult for horizontal sintering furnaces to meet their sintering requirements. Secondly, during the heating process of horizontal sintering furnaces, due to uneven heat distribution, it is easy to cause temperature gradients in the sintered products, thereby affecting the uniformity and consistency of the products. In addition, when observing the state of sintered products in traditional sintering furnaces, it is often necessary to stop the machine and open the furnace door, which not only reduces production efficiency but also may have an adverse impact on sintered products due to sudden temperature changes.

[0004] With the continuous progress of industrial technology and the diversification of product requirements, the market has put forward higher requirements for sintering furnace equipment, especially in terms of processing special-shaped products, improving sintering efficiency, reducing energy consumption, and enhancing operation convenience. Therefore, it is particularly important to develop a new type of sintering furnace that can efficiently and uniformly sinter vertical products, while facilitating the observation of the internal state during the sintering process and reducing heat loss. Summary of the Utility Model

[0005] In order to solve the above problems, the utility model proposes a vertical sintering furnace for processing zirconia ceramics. By adopting innovative technologies such as a vertical structure, an independent furnace door design, and suspended heating elements, it aims to solve the problems existing in traditional sintering furnaces when processing vertical products, improve sintering efficiency and product quality, reduce energy consumption, and enhance the convenience and flexibility of operation.

[0006] The utility model is realized through the following technical solutions:

[0007] A vertical sintering furnace for processing zirconia ceramics includes a furnace body and a furnace door. A furnace car is movably arranged in the furnace body. The furnace door, furnace car, and furnace body are independent of each other. A vertical sintering chamber is arranged in the furnace body. The furnace door is movably arranged on the furnace body. A moving track is arranged below the furnace body along the moving direction of the furnace door and furnace car. A plurality of silicon molybdenum rods are suspended around the inner circumference of the vertical sintering chamber.

[0008] To further optimize the present utility model, the following technical solutions can be preferably selected:

[0009] Preferably, the furnace body includes an outer shell, and a furnace top and vertical walls are arranged inside the outer shell. There are 3 vertical walls which are spliced with each other and enclose a semi-closed furnace chamber with the furnace top. The vertical walls include a composite lining, and the composite lining includes a heat-insulating cotton layer, a waste fiber board layer, and an alumina hollow ball brick layer arranged in sequence from outside to inside. By arranging a composite lining including a heat-insulating cotton layer, a waste fiber board layer, and an alumina hollow ball brick layer inside the outer shell, the heat preservation and heat insulation effects of the furnace body are effectively improved. This multi-layer structure design can reduce heat loss, improve energy utilization efficiency, and at the same time reduce the influence of the external environment on the sintering process, ensuring the stability and uniformity of the sintering temperature.

[0010] Preferably, the inner wall of the furnace top is arched. The arched design of the furnace top not only enhances the structural stability of the furnace body, but also is conducive to the uniform distribution and reflection of heat, further improving the sintering efficiency.

[0011] Preferably, the furnace top is composed of multiple arc-shaped furnace top bricks spliced with each other. A splicing convex part is arranged on one side of the arc-shaped furnace top brick, and a splicing groove part is arranged on the other side of the arc-shaped furnace top brick. The arc-shaped furnace top brick is a formed brick made of waste fiber granulation powder. The furnace top is composed of multiple arc-shaped furnace top bricks spliced with each other and uses the formed brick material made of waste fiber granulation powder, which not only realizes the recycling of resources but also reduces the production cost. The setting of the splicing convex part and the groove part makes the connection between the furnace top bricks tighter, reducing the possibility of heat leakage.

[0012] Preferably, a plurality of sealing protrusions are arranged on both sides of the furnace car, and sealing grooves matched with the sealing protrusions are opened on the side wall of the furnace body. The sealing protrusions and the sealing grooves form an S-shaped bending sealing area. The sealing protrusions arranged on both sides of the furnace car cooperate with the sealing grooves on the side wall of the furnace body to form an S-shaped bending sealing area, effectively preventing the leakage of harmful gases and the intrusion of external impurities during the sintering process. This design improves the sealing performance of the sintering chamber, ensuring the purity of the sintering environment and the quality of the products.

[0013] Preferably, a moving base is arranged at the bottom of the furnace door. Moving wheels matched with a moving track are arranged at the bottom of the moving base. A back plate is arranged at a position corresponding to the outside of the furnace door on the moving base. An inclined pull support is arranged between the back plate and the moving base. The moving base and the moving wheels arranged at the bottom of the furnace door make the opening and closing of the furnace door easier and more convenient. At the same time, the design of the inclined pull support enhances the stability of the furnace door, preventing the furnace door from shaking and tilting during the moving process. This design improves the operation safety and reduces the labor intensity of the operators.

[0014] Preferably, the suspension area of the silicon molybdenum rod is divided into upper, middle, and lower suspension areas inside the furnace body. The suspension position of the upper suspension area is set at the top inside the furnace body, and the suspension positions of the middle and lower suspension areas are set on the side walls of the furnace body. This layout enables heat to be transferred more evenly to all corners of the sintering chamber, improving the uniformity and efficiency of sintering. At the same time, according to the requirements of specific sintered products, the number and position of the silicon molybdenum rods can be flexibly adjusted to meet different sintering process requirements.

[0015] The vertical sintering furnace of this utility model has remarkable beneficial effects in terms of design and function, which are mainly reflected in the following aspects:

[0016] (1) High-efficiency heating and uniform sintering: By suspending multiple silicon molybdenum rods around the inner perimeter of the vertical sintering chamber for heating, this layout ensures the temperature uniformity inside the sintering chamber, which is beneficial for uniform heating of all parts of the vertical products, thereby improving the sintering efficiency and product quality. As a heating element, the silicon molybdenum rod has advantages such as good high-temperature stability and strong oxidation resistance, and is suitable for the sintering requirements of various materials.

[0017] (2) Flexibility and convenience: The independent design of the furnace door, furnace car, and furnace body makes the opening and closing of the furnace door more flexible, facilitating the operator to quickly enter and exit the sintering chamber for product placement, removal, or observation. At the same time, the moving track set under the furnace body enables the furnace car to move smoothly along the specified direction, further enhancing the convenience and safety of operation.

[0018] (3) Convenient observation and monitoring: The independent furnace door design not only facilitates operation but also enables the operator to easily observe the product state inside the sintering chamber without frequently opening the furnace door, reducing the risk of heat loss and external contamination. This is of great significance for real-time monitoring of the sintering process, adjusting process parameters, and timely discovering and solving problems.

[0019] (4) Compact structure and high space utilization rate: The structure design of the vertical sintering furnace is compact, making full use of the vertical space. Compared with traditional horizontal sintering furnaces, it can process more or larger products under the same floor area, improving production efficiency and space utilization rate.

[0020] (5) Easy maintenance: Since components such as the furnace door and furnace car can be independently disassembled and installed, the daily maintenance, cleaning, and replacement of heating elements and other work of the equipment become simpler and faster, reducing maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the vertical sintering furnace;

[0022] Figure 2 is the front view of the vertical sintering furnace;

[0023] Figure 3 It is a schematic diagram of the internal structure of a vertical sintering furnace;

[0024] Figure 4 is Figure 1 an enlarged schematic diagram of the structure at position A in

[0025] Figure 5 is Figure 1 an enlarged schematic diagram of the structure at position B in

[0026] Wherein: 1 - furnace body; 2 - furnace door; 3 - furnace car; 4 - vertical sintering chamber; 5 - moving track; 6 - moving base; 7 - moving wheel; 8 - back plate; 9 - diagonal bracing; 10 - arc furnace roof brick; 11 - splicing convex part; 12 - splicing groove part; 13 - outer shell; 14 - composite lining; 15 - sealing convex; 16 - sealing groove; 17 - bent sealing area; 18 - silicon molybdenum rod. Specific embodiments

[0027] In the description of the present invention, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", and "connected" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1

[0030] Such as Figure 1-5Shown: A vertical sintering furnace for zirconia ceramic processing, including a furnace body 1 and a furnace door 2. A furnace car 3 is movably installed inside the furnace body. The furnace door, furnace car, and furnace body are independent of each other. A vertical sintering chamber 4 is installed inside the furnace body. The furnace door is movably installed on the furnace body. A moving track 5 is installed below the furnace body along the moving direction of the furnace door and furnace car; among them, the inner wall of the furnace top is arched. The furnace top adopts an arched design, which not only enhances the structural stability of the furnace body, but also is conducive to the uniform distribution and reflection of heat, further improving the sintering efficiency; the furnace top is composed of multiple arc-shaped furnace top bricks spliced together. One side of the arc-shaped furnace top brick 10 is installed with a splicing convex part 11, and the other side of the arc-shaped furnace top brick is installed with a splicing groove part 12. The arc-shaped furnace top brick is a formed brick made of waste fiber granulated powder; the furnace top is composed of multiple arc-shaped furnace top bricks spliced together and made of waste fiber granulated powder formed brick material, which not only realizes the recycling of resources, but also reduces the production cost. The installation of the splicing convex part and groove part makes the connection between the furnace top bricks closer, reducing the possibility of heat leakage.

[0031] Among them, a plurality of silicon molybdenum rods 18 are suspended around the inner circumference of the vertical sintering chamber; among them, the suspension areas of the silicon molybdenum rods are divided into upper, middle, and lower suspension areas inside the furnace body. The suspension positions in the upper suspension area are installed at the top inside the furnace body, and the suspension positions in the middle and lower suspension areas are installed on the side walls of the furnace body; this layout method enables heat to be transferred more evenly to all corners of the sintering chamber, improving the uniformity and efficiency of sintering. At the same time, according to the requirements of specific sintered products, the number and position of the silicon molybdenum rods can be flexibly adjusted to meet different sintering process requirements.

[0032] The furnace body includes an outer shell 13. Inside the outer shell, a furnace top and vertical walls are installed. There are 3 vertical walls, and after being spliced together, they enclose a semi-closed furnace chamber with the furnace top. The vertical wall includes a composite lining. The composite lining 14 includes a heat-insulating cotton layer, a waste fiber board layer, and an alumina hollow ball brick layer installed in sequence from the outside to the inside; by installing a composite lining including a heat-insulating cotton layer, a waste fiber board layer, and an alumina hollow ball brick layer inside the outer shell, the heat preservation and heat insulation effects of the furnace body are effectively improved. This multi-layer structure design can reduce heat loss, improve energy utilization efficiency, and at the same time reduce the influence of the external environment on the sintering process, ensuring the stability and uniformity of the sintering temperature.

[0033] A plurality of sealing protrusions 15 are installed on both sides of the furnace car, and sealing grooves 16 matching the sealing protrusions are opened on the side walls of the furnace body. The sealing protrusions and sealing grooves form an S-shaped bending sealing area 17; the sealing protrusions installed on both sides of the furnace car cooperate with the sealing grooves on the side walls of the furnace body to form an S-shaped bending sealing area, effectively preventing the leakage of harmful gases and the intrusion of external impurities during the sintering process. This design improves the sealing performance of the sintering chamber, ensuring the purity of the sintering environment and the quality of the products.

[0034] A moving base 6 is installed at the bottom of the furnace door. Moving wheels 7 that cooperate with the moving track are installed at the bottom of the moving base. A back plate 8 is installed at a position corresponding to the outer side of the furnace door on the moving base. A diagonal bracing 9 is installed between the back plate and the moving base. The moving base and moving wheels installed at the bottom of the furnace door make the opening and closing of the furnace door easier and more convenient. At the same time, the design of the diagonal bracing enhances the stability of the furnace door and prevents the furnace door from shaking and tilting during movement. This design improves the safety of operation and reduces the labor intensity of the operators.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vertical sintering furnace for processing zirconia ceramics, comprising a furnace body and a furnace door, characterized in that: A furnace trolley is movably arranged in the furnace body, the furnace door, the furnace trolley and the furnace body are independent of each other, a vertical sintering chamber is arranged in the furnace body, the furnace door is movably arranged on the furnace body, and a movable track is arranged below the furnace body along the moving direction of the furnace door and the furnace trolley; a plurality of silicon-molybdenum rods are suspended around the vertical sintering chamber.

2. A vertical sintering furnace for processing zirconia ceramics according to claim 1, characterized in that: The furnace body includes an outer shell, a furnace top and a vertical wall are arranged in the outer shell, there are three vertical walls which are spliced ​​together to form a semi-closed furnace with the furnace top, and the vertical wall includes a composite lining, which includes a thermal insulation cotton layer, a waste fiberboard layer, and an alumina hollow ball brick layer arranged in sequence from the outside to the inside.

3. A vertical sintering furnace for processing zirconia ceramics according to claim 2, characterized in that: The inner wall of the furnace top is arched.

4. A vertical sintering furnace for processing zirconia ceramics according to claim 3, characterized in that: The furnace roof is formed by splicing a plurality of arc-shaped furnace roof bricks which are spliced ​​to each other. A splicing protrusion is arranged on one side of the arc-shaped furnace roof brick, and a splicing groove is arranged on the other side of the arc-shaped furnace roof brick. The arc-shaped furnace roof brick is formed by waste fiber granulation powder.

5. The vertical sintering furnace for processing zirconia ceramics according to claim 1, characterized in that: A plurality of sealing protrusions are arranged on both sides of the furnace car, and a sealing groove cooperating with the sealing protrusions is opened on the side wall of the furnace body, and the sealing protrusions and the sealing groove form an S-shaped bending sealing area.

6. A vertical sintering furnace for processing zirconia ceramics according to claim 1, characterized in that: A movable base is arranged at the bottom of the furnace door, a movable wheel cooperating with a movable track is arranged at the bottom of the movable base, a back plate is arranged on the movable base at a position corresponding to the outer side of the furnace door, and an oblique support is arranged between the back plate and the movable base.

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