Heat preservation furnace top structure of sintering furnace
By abolishing the arch beam design of the sintering kiln for atmosphere protection, using a fire barrier and a wire shelf plate to form a heating chamber, and building a mullite brick insulation layer on the top, the problem of high heat energy consumption on the furnace roof is solved and the energy saving and insulation effect is improved.
Patent Information
- Application Number
- CN202422200413.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the furnace roof structure of the existing atmosphere-protected sintering kiln, the arch beam occupies a large space, resulting in high heat energy consumption. The furnace roof design needs to be optimized to save heat energy.
The arch beam design is cancelled, and a heated cavity is surrounded by a fire barrier and a wire shelves are stacked on the top of the heating cavity to form a compact insulation structure to reduce heat energy diffusion.
By abolishing the arch beam, heat energy consumption is reduced, thermal insulation effect is improved, chip loss and collapse problems of the arch beam are avoided, and energy-saving effects are achieved.
Smart Images
Figure CN223165930U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of sintering kilns. Background Art
[0002] The atmosphere protection sintering furnace is a sintering equipment in the production process of magnetic materials. The sintered products are placed directly or indirectly on the high temperature resistant and wear resistant push plate. The push system moves the products placed on the push plate according to the process requirements of the products.
[0003] The sintering process of the product is completed in the furnace. It is a continuous heating sintering equipment. According to the process requirements of the sintered products, the required temperature zones and power are arranged to form the thermal part of the equipment to meet the product's demand for heat.
[0004] The roof structure of existing atmosphere-protected sintering furnaces primarily consists of an arch, arch beams, and a wire shelf. The arches are positioned relative to each other, with the arch beams supporting the arches and the wire shelf supporting the bottom of the arch. Silicon-molybdenum rods used for heating are placed on the wire shelf to heat the furnace. The arch beam is a key component of the roof structure. Existing arch beams are supported from both sides toward the center by several inclined sleeper bricks. This structure requires a large amount of space, resulting in a larger heating area for the entire furnace roof, which undoubtedly increases heat energy consumption. Reducing the heating area in the furnace roof can help save heating energy in the sintering furnace. Summary of the invention
[0005] The technical problem to be solved by the utility model is to provide a furnace roof structure of a sintering furnace in view of the above-mentioned prior art, cancel the design of the arch beam, save the insulation space, and thus save the heat energy consumption of the entire sintering furnace.
[0006] The technical solution adopted by the present invention to solve the above problems is: an insulation furnace roof structure of a sintering kiln, including a dome and a wire shelf, the two domes are arranged relative to each other, the wire shelf is arranged between the two domes, and the heating element is arranged on the wire shelf, which is characterized in that it also includes a fire baffle, the fire baffle is arranged between the two domes and above the wire shelf, the fire baffle, the wire shelf and the dome form a heating chamber, and the top of the heating chamber is stacked with an insulation layer.
[0007] As an implementation structure, the wire shelf is horizontally arranged at the lower end of the arch, and the arches on both sides have bottom steps. The two sides of the wire shelf are respectively supported on the bottom steps of the arches on both sides.
[0008] As an implementation structure, the fire baffle is horizontally arranged in the middle of the arch, and the arches on both sides have middle steps. The two sides of the fire baffle are respectively supported on the middle steps of the arches on both sides.
[0009] As an implementation structure, the heat insulation layer covers the space above the heating chamber and between the two side vaults, and the top of the heat insulation layer is flush with the vaults. In the furnace top structure, the top of the heating chamber is entirely lined with a heat insulation layer, which can improve the top heat insulation performance, inhibit the overflow of heat energy, and enhance the heat insulation effect.
[0010] As an implementation structure, the heating element is a silicon molybdenum rod, and several of the silicon molybdenum rods are arranged at intervals on the wire supporting plate.
[0011] As an implementation structure, the heat insulation layer is a masonry structure made of mullite bricks. Mullite bricks are a type of lightweight refractory brick and can play an ideal heat insulation role as the heat insulation layer.
[0012] Compared with the prior art, the advantages of the present utility model are as follows: The furnace top structure of this application cancels the arch beam structure in the traditional sintering kiln furnace top structure. On the one hand, it avoids the problems of easy chipping, collapse, and sinking of the arch beam under long-term high-temperature conditions. On the other hand, after canceling the arch beam, it is replaced by a fire baffle and the masonry heat insulation layer above the fire baffle. The fire baffle and the wire supporting plate can enclose a heating chamber with a smaller space, and the heat insulation layer can reduce the upward diffusion of heat energy, thus achieving the effect of saving heat energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a cross-sectional view of the furnace top structure in the embodiment of the present utility model;
[0014] In the figure, 1 is the vault, 2 is the middle step, 3 is the fire baffle, 4 is the heat insulation layer, 5 is the silicon molybdenum rod, 6 is the wire supporting plate, 7 is the bottom step, and Q is the heating chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0015] The present utility model will be further described in detail below with reference to the accompanying drawings. The embodiments are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. The text description in this embodiment corresponds to the accompanying drawings, and the description of directions is also based on the accompanying drawings, and should not be construed as limiting the protection scope of the present utility model.
[0016] Such as Figure 1As shown in the figure, the thermal insulation furnace roof structure of the sintering furnace in this embodiment specifically refers to the furnace roof heating structure spanning above the furnace feeding channel. A number of furnace roof heating structures are arranged at intervals in sequence along the pusher plate feeding direction in the furnace cavity of the furnace. For the convenience of description, the pusher plate feeding direction in the furnace cavity of the furnace is defined as the front-back direction. Each furnace roof heating structure includes two arch roofs 1, a fire baffle 3, a thermal insulation layer 4, silicon molybdenum rods 5, and a wire supporting plate 6. The two arch roofs 1 are arranged at intervals front and back. The fire baffle 3 and the wire supporting plate 6 are both arranged between the two arch roofs 1. The fire baffle 3 is located above the wire supporting plate 6. The fire baffle 3, the wire supporting plate 6, and the arch roofs 1 on both sides together enclose a heating chamber Q. The energized and heat-generating silicon molybdenum rods 5 are placed on the wire supporting plate 6 as heating elements. Refractory bricks (TJM30 mullite bricks) are stacked above the fire baffle 3 as the thermal insulation layer 4. The thermal insulation layer fills the space above the fire baffle and between the two side arch roofs, and the top is flush with the two side arch roofs, improving the thermal insulation effect and preventing heat energy from spreading.
[0017] The wire supporting plate 6 and the fire baffle 3 are both horizontally arranged. The wire supporting plate 6 is supported at the bottom of the arch roof 1. The fire baffle 3 is located at a position tending downward in the middle of the arch roof 1. The two side arch roofs 1 have a bottom step 7 for supporting the wire supporting plate 6 and a middle step 2 for supporting the fire baffle 3.
[0018] The above-mentioned furnace roof structure of the furnace cancels the traditional arch beam structure, which helps to reduce the heating space, further prevents heat energy from spreading, improves the thermal insulation effect, and achieves the effect of energy saving.
[0019] In addition to the above embodiments, the present invention also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present invention.
Claims
1. A heat-insulating furnace roof structure for a sintering kiln, comprising an arch roof and a wire supporting plate. The two arch roofs are arranged at intervals opposite to each other. The wire supporting plate is arranged between the two arch roofs, and a heating element is arranged on the wire supporting plate. It is characterized in that: It further includes a fire baffle which is arranged between the two vaults and above the wire supporting plate. The fire baffle, the wire supporting plate and the vaults enclose a heating chamber, and a heat preservation layer is piled up upward at the top of the heating chamber.
2. The thermal insulation furnace top structure of the sintering kiln furnace according to claim 1, characterized in that: The wire supporting plate is horizontally arranged at the lower end of the vault. The two side vaults have bottom steps, and the two sides of the wire supporting plate are respectively supported on the bottom steps of the two side vaults correspondingly.
3. The thermal insulation furnace roof structure of the sintering kiln furnace according to claim 1, characterized in that: The fire baffle is horizontally arranged at the middle position of the vault. The two side vaults have middle steps, and the two sides of the fire baffle are respectively supported on the middle steps of the two side vaults correspondingly.
4. The thermal insulation furnace top structure of the sintering kiln furnace according to claim 1, characterized in that: The heat preservation layer covers the space above the heating chamber and between the two side vaults, and the top of the heat preservation layer is flush with the vaults.
5. The heat-insulating furnace top structure of the sintering kiln furnace according to claim 1, characterized in that: The heating element is a silicon molybdenum rod, and a plurality of the silicon molybdenum rods are arranged on the wire supporting plate at intervals.
6. The thermal insulation furnace top structure of the sintering kiln furnace according to claim 1, characterized in that: The heat preservation layer is a masonry structure made of mullite bricks.