A hot air duct

Abstract

The utility model provides a kind of hot even current air pipe, its blown hot air is more uniform, and product size is adjustable, can adapt to the requirement of different drying box. The application includes air inlet pipe, air inlet pipe is fixed on main air pipe, the bottom of main air pipe is equipped with several air outlet pipes, the bottom of air outlet pipe is equipped with air outlet, the cross-sectional area of main air pipe is gradually reduced from air inlet to end portion. In the application, the cross-sectional area of main air pipe is gradually reduced from air inlet to end portion, can make the uniform distribution of wind distribution in main air pipe, also more uniform, be blown out, be beneficial to the uniform drying of leather. In addition, main air pipe is composed of multiple air pipe assemblies, and the number and length of air outlet pipe can also be adjusted as needed.

Description

Technical Field

[0001] This utility model relates to heating air ducts, and in particular to a heating air duct used in leather production. Background Technology

[0002] In leather production, drying equipment is used to dry the leather. Generally, the leather is placed in a drying chamber, and hot air is generated by a hot air blower. This hot air is then blown onto the leather surface by a hot air distributor to achieve the drying process, as described in utility model patent CN 217733158 U, entitled "A Water-Based Bio-based Leather Preparation and Drying Device." However, during use, the following problems have been found with the hot air distributor design: 1. Uneven airflow leads to uneven drying, affecting leather quality; 2. The distributor configuration is fixed, making it unsuitable for different drying devices, and the structure is complex. Utility Model Content

[0003] This utility model proposes a heat uniform airflow duct that blows out relatively uniform hot air and whose product size is adjustable.

[0004] The technical solution of this utility model is implemented as follows: A heat equalization air duct includes an air inlet pipe, which is fixed on a main air duct. The bottom of the main air duct is provided with several air outlet pipes, and the bottom of the air outlet pipes is provided with air outlets. The cross-sectional area of ​​the main air duct gradually decreases from the air inlet to the end.

[0005] The cross-sectional area of ​​the air outlet duct gradually decreases from the air inlet to the end.

[0006] There are several air outlets on the air duct, and these outlets are intermittently distributed.

[0007] The main air duct is composed of several air duct assemblies. The side wall of the connector at the bottom of the air duct assembly is provided with a side air outlet, and the air outlet is connected to the side air outlet.

[0008] The main air duct is also equipped with an air outlet at its bottom.

[0009] The air outlet duct is equipped with a heating element.

[0010] In this application, the cross-sectional area of ​​the main air duct gradually decreases from the air inlet to the end, which enables more uniform air distribution within the main air duct and more even airflow, which is beneficial for the uniform drying of leather. In addition, the main air duct is composed of multiple duct sections, and its length can be adjusted as needed, as can the number and length of the outlet air ducts. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A three-dimensional schematic diagram of this utility model.

[0013] Figure 2 This is a cross-sectional view of this application.

[0014] Figure 3 This is a bottom view of this application.

[0015] Figure 4 This is a schematic diagram of a duct assembly.

[0016] Figure 5 This is a view of the air outlet duct.

[0017] Figure 6 This is a magnified view of a portion of the air outlet duct.

[0018] The components include: air inlet duct 1, main air duct 2, side air outlet 2-1, connector 2-2, air duct assembly 2-3, air outlet duct 3, heating pipe 4, and air outlet 5. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-6 As shown, a heat equalization air duct includes an air inlet duct 1, which is fixed to a main air duct 2. The bottom of the main air duct 2 is provided with several air outlet ducts 3, and the bottom of each air outlet duct 3 is provided with an air outlet 5. The cross-sectional area of ​​the main air duct 2 gradually decreases from the air inlet to both ends. Preferably, the cross-sectional area of ​​the air outlet ducts 3 gradually decreases from the air inlet to the end.

[0021] In this application: the air inlet duct is connected to the fan. Hot air heated by natural gas enters through the air inlet duct 1, passes through the main air duct 2, enters the air outlet duct 3, and is then blown out from the air outlet 5 at the bottom of the air outlet duct 3. The reason why the cross-sectional area of ​​the main air duct 2 gradually decreases is for the following advantages: when the air blows towards both ends of the main air duct 2, the air will encounter a certain resistance, making the air more evenly distributed within the main air duct 2, preventing the airflow from being strong at both ends and weak in the middle. The same principle applies to the design of the air outlet duct 3, which has a gradually decreasing cross-sectional area from the air inlet to the end.

[0022] The air outlet 5 on the air outlet pipe is a number of outlets, and the multiple outlets 5 are distributed intermittently, which can increase the strength of the surface where the outlets are located.

[0023] Preferably, the main air duct 2 is composed of several duct assemblies 2-3, and the side wall of the connector 2-2 at the bottom of the duct assembly 2-3 is provided with a side air outlet 2-1, and the air outlet duct 3 is connected to the side air outlet 2-1. This arrangement allows for adjustment of the length of the main air duct 2 to meet the needs of different ovens, etc.

[0024] The bottom of the main air duct 2 is also provided with an air outlet 5.

[0025] Preferably, this application includes a heating pipe 4 inside the air outlet pipe 3, with both ends of the heating pipe 4 fixed to the ends of the air outlet pipe. In this application, when the heating pipe 4 is added, the air entering through the air inlet pipe 1 can be heated by the heating pipe before being blown onto the leather. Of course, without the heating pipe, the air inlet pipe can be directly supplied with hot air heated by natural gas.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat equalization air duct, comprising an air inlet duct (1), the air inlet duct (1) being fixed on a main air duct (2), characterized in that: The bottom of the main air duct (2) is provided with several air outlet ducts (3), and the bottom of the air outlet duct (3) is provided with an air outlet (5). The cross-sectional area of ​​the main air duct (2) gradually decreases from the air inlet to the end.

2. The heat equalization duct according to claim 1, characterized in that: The cross-sectional area of ​​the air outlet pipe (3) gradually decreases from the air inlet to the end.

3. The heat equalization duct according to claim 1, characterized in that: There are several air outlets (5) on the air outlet pipe (3), and the multiple air outlets (5) are intermittently distributed.

4. The heat equalization duct according to claim 1, characterized in that: The main air duct (2) is composed of several sections of air duct assembly (2-3). The side wall of the connector (2-2) at the bottom of the air duct assembly (2-3) is provided with a side air outlet (2-1), and the air outlet (3) is connected to the side air outlet (2-1).

5. The heat equalization duct according to claim 4, characterized in that: The bottom of the main air duct (2) is also provided with an air outlet (5).

6. The heat equalization duct according to any one of claims 1 to 5, characterized in that: The air outlet pipe (3) is equipped with a heating pipe (4).

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