A blowing device for a dryer

Abstract

The utility model discloses a kind of blowing devices for drying machine, belong to drying equipment accessory technical field, and it includes blowing pipe, the blowing pipe outside is fixedly connected with multiple air outlet cavities along axial direction, blowing pipe is cylindrical, air outlet cavity is trapezoidal, air outlet cavity is divided into big mouth end and small mouth end, big mouth end is towards material end, the small mouth end of air outlet cavity is fixedly connected with blowing pipe outside, trapezoidal air outlet can increase blowing area, improve cleaning efficiency, air outlet cavity inside is provided with flow equalizing plate, can promote the utilization of airflow, multiple air outlet grooves are set on flow equalizing plate, air outlet groove is strip-shaped, the long side of air outlet groove is parallel to the long side of air outlet cavity, air outlet groove between middle section is large in interval, air outlet groove interval gradually decreases close to two sides of air outlet cavity, can disperse the wind concentrated in middle to two sides, so that air outlet is more uniform, the device solves the problem of current drying machine blowing device cleaning efficiency low.

Description

Technical Field

[0001] This utility model belongs to the technical field of drying equipment accessories, specifically relating to a purging device for a dryer. Background Technology

[0002] In continuous production processes, high-speed airflow is often used to blow the surface of sheet, strip, or plate materials to achieve drying, remove surface dust, or achieve uniform cooling. The uniformity and energy efficiency of the blowing effect are directly related to the consistency of product quality, production energy consumption, and operating costs.

[0003] However, existing purge pipes mostly use circular or rectangular purge nozzles. The airflow outlet cross-section of these nozzles is a regular shape with a fixed size, and the airflow diffuses in a columnar or narrow strip shape after being ejected, resulting in limited purge coverage. In actual production, achieving comprehensive purging often requires increasing the number of purging cycles, which increases the energy consumption cost of the equipment. Therefore, this phenomenon has become a problem that urgently needs to be solved by those in the field. Utility Model Content

[0004] The purpose of this invention is to provide a purging device for a dryer to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a purging device for a dryer, including a purging pipe, wherein multiple air outlet chambers are fixedly connected to the outside of the purging pipe along the axial direction. The purging pipe is cylindrical, and the air outlet chambers are trapezoidal. The air outlet chambers are divided into a large end and a small end. The large end faces the material end, and the small end of the air outlet chamber is fixedly connected to the outside of the purging pipe. The trapezoidal large end can increase the purging area and improve the cleaning efficiency.

[0006] The present invention further explains that the air outlet cavity is provided with a flow equalization plate, which can improve the utilization rate of airflow. The flow equalization plate is provided with multiple air outlet slots, which are elongated and the long side of the air outlet slots is parallel to the long side of the air outlet cavity.

[0007] This invention further explains that the air outlet slots in the middle section are spaced far apart, while the air outlet slots on both sides of the air outlet cavity are spaced far apart, which can disperse the concentrated air in the middle to both sides, making the air outlet more uniform.

[0008] This utility model further illustrates that two reinforcing ribs are provided at the connection between the air outlet cavity and the purge pipe to enhance the structural strength of the air outlet cavity.

[0009] The present invention further explains that the edges and corners of the large opening end of the air outlet cavity are rounded to prevent vortices from being generated when the airflow is ejected, thereby reducing airflow loss.

[0010] This invention further explains that the purge tube has a hollow structure, and the gas connected inside the purge tube is nitrogen.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: By setting a rectangular air outlet cavity, this utility model can increase the blowing area and improve the cleaning efficiency; by setting a non-uniformly distributed air distribution plate for the air outlet groove, it can reduce the high-speed airflow in the middle and increase the low-speed airflow on both sides, so that the overall blowing speed is uniform and the airflow utilization rate is improved. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is the utility model Figure 1 Enlarged view of point A in the middle; In the diagram: 1. Purge pipe; 2. Air outlet cavity; 3. Flow equalization plate; 4. Air outlet slot; 5. Reinforcing rib; 6. Rounded corners. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-2 The present invention provides a technical solution: a blowing device for a dryer, including a blowing pipe 1, and multiple air outlet chambers 2 fixedly connected to the outside of the blowing pipe 1 along the axial direction. The blowing pipe 1 is cylindrical, and the air outlet chambers 2 are trapezoidal. The air outlet chambers 2 are divided into a large end and a small end. The large end faces the material end, and the small end of the air outlet chamber 2 is fixedly connected to the outside of the blowing pipe 1. The trapezoidal large end can increase the blowing area and improve the cleaning efficiency. The air outlet cavity 2 is equipped with a flow equalization plate 3, which can improve the utilization rate of airflow. Multiple air outlet slots 4 are opened on the flow equalization plate 3. The air outlet slots 4 are long and narrow, and the long side of the air outlet slots 4 is parallel to the long side of the air outlet cavity 2. The air outlet slots 4 in the middle section are spaced far apart, while the air outlet slots 4 on both sides near the air outlet cavity 2 are spaced far apart. This can disperse the concentrated air in the middle to both sides, making the air outlet more uniform. Two reinforcing ribs 5 are provided at the connection between the air outlet cavity 2 and the purge pipe 1 to enhance the structural strength of the air outlet cavity 2; The edges and corners of the large opening of the air outlet cavity 2 are rounded 6 to prevent vortices from being generated when the airflow is ejected and to reduce airflow loss. The purge tube 1 has a hollow structure, and the gas connected inside the purge tube 1 is nitrogen.

[0015] Working principle: Nitrogen gas is introduced into the purge pipe 1, and the airflow enters the outlet chamber 2. Since the small end of the rectangular outlet chamber 2 is connected to the purge pipe 1, the airflow area gradually increases. The flow velocity is high in the middle section and low at both ends. When the airflow reaches the flow equalization plate 3, the airflow flows to the small-spaced outlet slots 4 on both sides due to the large spacing in the middle of the flow equalization plate 3. This increases the flow velocity on both sides and reduces the flow velocity in the middle. As a result, the airflow is evenly blown out from the large end of the outlet chamber 2, ultimately increasing the purge area, ensuring uniform purge velocity, and improving airflow utilization.

[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0017] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A purging device for a dryer, comprising a purging pipe (1), characterized in that: The purge pipe (1) is fixedly connected to a plurality of air outlet chambers (2) along the axial direction. The purge pipe (1) is cylindrical and the air outlet chambers (2) are trapezoidal. The air outlet chambers (2) are divided into a large end and a small end. The large end faces the material end and the small end of the air outlet chambers (2) is fixedly connected to the outside of the purge pipe (1).

2. The purging device for a dryer according to claim 1, characterized in that: The air outlet cavity (2) is provided with a flow equalization plate (3), and the flow equalization plate (3) is provided with multiple air outlet slots (4). The air outlet slots (4) are elongated, and the long side of the air outlet slots (4) is parallel to the long side of the air outlet cavity (2).

3. The purging device for a dryer according to claim 2, characterized in that: The air outlet slots (4) in the middle section are spaced far apart, while the air outlet slots (4) near the air outlet cavity (2) are spaced far apart.

4. A purging device for a dryer according to claim 3, characterized in that: Two reinforcing ribs (5) are provided at the connection between the air outlet cavity (2) and the purge pipe (1).

5. A purging device for a dryer according to claim 4, characterized in that: The edges and corners of the large opening of the air outlet cavity (2) are all rounded (6).

6. A purging device for a dryer according to claim 5, characterized in that: The purge tube (1) has a hollow structure, and the gas connected inside the purge tube (1) is nitrogen.

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