A sintering heating structure of a kiln

Abstract

The utility model relates to a sintering heating structure of kiln belongs to the kiln field. Including the temperature -rising area and high temperature area of front and back series, the furnace top of temperature -rising area is provided with the air outlet, the air outlet is connected with the furnace chamber through the airflow channel, the opposite setting air inlet is provided above the air outlet, sets up the fan on the pipeline of air inlet, its characterized in that: the high temperature area is provided with the natural air outlet, the natural air outlet is located in the high temperature area one side of the junction position of temperature -rising area and high temperature area, the natural air outlet is connected with the furnace chamber through the airflow channel, makes the furnace atmosphere of the high temperature area close to the junction position natural introduction natural air outlet, thereby produces the air curtain in the high temperature area of junction position. Avoid the atmosphere from the high temperature area to the junction position another side temperature -rising area back flow, influence temperature -rising area's atmosphere control, the high temperature area adopts the natural air outlet, and the atmosphere flow is small, has reduced the fluctuation of high temperature area atmosphere.

Description

Technical Field

[0001] This utility model belongs to the field of sintering kilns. Background Technology

[0002] A pusher-plate kiln is a high-efficiency industrial device. Its working principle is based on a combination of heating and pusher-plate movement, and it can be used for heating and sintering magnetic materials. It uses pushers to complete the sample heating and sintering process. The sample on the pusher plate is gradually heated and rises with the movement of the pusher plate, and automatically descends after a set time and temperature, thus completing the sintering process. This movement method ensures that the sample is heated evenly and avoids uneven heating caused by insufficient heating time and temperature, thereby improving product quality and production efficiency. To match the heating requirements, the kiln is divided into heating zones, high-temperature zones, and cooling zones. Different sintering processes correspond to different temperature zones, and the oxygen content requirements within the kiln also vary. For example, the heating zone has a higher oxygen content requirement than the adjacent high-temperature zone. The furnace cavity in the heating zone needs to be designed with atmosphere circulation, and the heating zone is also the glue removal zone, requiring evacuation. In actual operation, at the junction of the heating zone and the high temperature zone, the degassing effect of the heating zone will create a pressure difference on both sides of the junction, causing the airflow in the high temperature zone to flow back to the heating zone at the junction, affecting the atmosphere in the heating zone and making it difficult to control the oxygen content in the heating zone on the side of the junction. Summary of the Invention

[0003] The purpose of this invention is to provide a sintering heating structure for a kiln, specifically involving the structure of the heating zone and the high-temperature zone, to solve the problem of the atmosphere in the high-temperature zone flowing back into the heating zone at the interface, affecting the oxygen content control of the heating zone.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows: a sintering heating structure for a kiln, including a heating zone and a high-temperature zone connected in series, wherein an exhaust port is provided on the top of the heating zone, the exhaust port is connected to the furnace cavity through an airflow channel, an intake port is provided opposite to the exhaust port, and a fan is provided on the pipe where the intake port is located. The high-temperature zone is provided with a natural exhaust port, which is located on the side of the high-temperature zone at the junction of the heating zone and the high-temperature zone. The natural exhaust port is connected to the furnace cavity through an airflow channel, so that the furnace atmosphere in the high-temperature zone near the junction is naturally introduced into the natural exhaust port, thereby generating an air curtain in the high-temperature zone at the junction.

[0005] Preferably, the airflow channel connected to the natural air intake is a vertical slit, thereby forming an air curtain to prevent the atmosphere in the high-temperature zone from crossing the boundary and affecting the atmosphere in the heating zone.

[0006] Compared with the prior art, the advantages of this utility model are as follows: This application sets a natural air extraction port on the high-temperature zone side at the junction of the heating zone and the high-temperature zone. The natural air extraction port forms a natural airflow in the high-temperature zone at the junction, thereby preventing the atmosphere from flowing back from the high-temperature zone to the heating zone on the other side of the junction, which would affect the atmosphere control of the heating zone at that location. The use of a natural air extraction port results in a small atmosphere flow rate, reducing the fluctuation of the atmosphere in the high-temperature zone. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the sintering heating structure in an embodiment of this utility model;

[0008] In the diagram, 1 is the heating zone, 2 is the high-temperature zone, 3 is the exhaust port, 4 is the intake port, 5 is the fan, 6 is the natural exhaust port, and 7 is the vertical slit. Detailed Implementation

[0009] The present invention will be further described in detail below with reference to the accompanying drawings. The embodiments described are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The textual descriptions in this embodiment correspond to the accompanying drawings, and the descriptions involving orientation are also based on the descriptions in the accompanying drawings, and should not be construed as limiting the scope of protection of the present invention.

[0010] like Figure 1 As shown, the kiln sintering heating structure in this embodiment involves a heating zone 1 and a high-temperature zone 2 connected in series. An exhaust port 3 is provided at the top of the heating zone 1, and the exhaust port 3 connects to the furnace cavity of the heating zone through an airflow channel. An intake port 4 is provided opposite to the exhaust port 3, and a fan 5 is installed on the pipe where the intake port 4 is located. Under the action of the fan 5, the atmosphere in the furnace cavity of the heating zone 1 is discharged through the intake and exhaust ports, coordinating with the airflow circulation in the heating zone. A natural exhaust port 6 is provided in the high-temperature zone 2. The natural exhaust port 6 is located on the high-temperature zone 2 side at the boundary between the heating zone 1 and the high-temperature zone 2. The natural exhaust port 6 connects to the furnace cavity. Under the action of internal and external air pressure, the atmosphere in the high-temperature zone is naturally introduced into the natural exhaust port 6, thereby generating an air curtain in the high-temperature zone at the boundary, preventing the atmosphere in this area from flowing to the heating zone on the other side of the boundary, and reducing interference with the oxygen content of the atmosphere in the heating zone.

[0011] In this embodiment, the airflow channel connected to the natural air extraction port 6 is a vertical slit 7, thereby forming an air curtain, which helps to reduce the backflow of atmosphere from the high temperature zone at the interface to the heating zone, and helps to regulate the atmosphere in the heating zone at the interface.

[0012] In addition to the above embodiments, this utility model also includes other implementation methods. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of this utility model.

Claims

1. A sintering heating structure for a kiln, comprising a heating zone and a high-temperature zone connected in series, wherein an exhaust port is provided on the top of the heating zone, the exhaust port is connected to the furnace cavity through an airflow channel, and an intake port is provided opposite to the exhaust port above the exhaust port, and a fan is provided on the pipeline where the intake port is located, characterized in that: The high-temperature zone is equipped with a natural air extraction port, which is located on the high-temperature zone side at the junction of the heating zone and the high-temperature zone. The natural air extraction port is connected to the furnace cavity through an airflow channel, so that the furnace atmosphere in the high-temperature zone near the junction is naturally introduced into the natural air extraction port, thereby generating an air curtain in the high-temperature zone at the junction.

2. The sintering heating structure of a kiln according to claim 1, characterized in that: The airflow channel connected to the natural air intake is a vertical slit.

Images