Pressure spraying air inlet device

Abstract

The utility model relates to the technical field of spray drying, in particular to a pressure spray air inlet device. The drying device comprises a drying cylinder, an annular air inlet pipe is arranged above the drying cylinder, the annular air inlet pipe is connected into the drying cylinder through a plurality of air inlet branch pipes, an air inlet header pipe is connected to the annular air inlet pipe, and the air inlet header pipe is connected to external air supply equipment; according to the device, the air inlet header pipe, the annular air inlet pipe and the air inlet branch pipes are used for replacing an original multi-layer pore plate mode, uniform air inlet of pressure spraying is completed in a simpler and more convenient mode, the structure is simple, the manufacturing cost is low, meanwhile, the air inlet resistance is smaller than that of the pore plates, the fan power requirement is low, analog calculation and debugging are not needed, and use is convenient; the flow guide plates are used, the stability of the flowing direction of airflow is further enhanced, vortex is prevented, the gas circulation rate is increased, and therefore the drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spray drying, in particular to a pressure spray air inlet device. Background Art

[0002] In conventional pressure spray drying equipment, hot air needs to pass through two layers of air distribution plates after passing through the air inlet pipe, and then dry the material.

[0003] However, since the hot air needs to pass through two layers of orifice plates, and in some specific cases, the number of orifice plates needs to be increased as needed to achieve the purpose of uniform air flow, the airflow needs to overcome greater resistance, and the required fan pressure head and power will also be greatly increased; at the same time, the opening rate of the orifice plate needs to be simulated and calculated, and the early design is difficult. In actual use, there will be certain errors in the flow of airflow and simulation calculations, and debugging is also required. In addition, the orifice plate is difficult to manufacture and install, and the cost is high. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure spray air inlet device with a reasonable design to solve the defects and shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: it includes a drying cylinder, a ring-shaped air inlet pipe is arranged above the drying cylinder, the ring-shaped air inlet pipe is connected to the drying cylinder through a plurality of air inlet branches, the ring-shaped air inlet pipe is connected to an air inlet main pipe, and the air inlet main pipe is connected to an external air supply device.

[0006] Preferably, the plurality of air inlet branch pipes are evenly arranged along the circumference below the annular air inlet pipe.

[0007] Preferably, a plurality of guide plates are provided in the air inlet branch pipe.

[0008] Preferably, a plurality of guide plates are cross-arranged in the air inlet branch pipe, and the arrangement direction of the guide plates is aligned with the axial centerline direction of the air inlet branch pipe.

[0009] Preferably,

[0010] After adopting the above structure, the beneficial effects of the utility model are:

[0011] 1. This device uses an air inlet main pipe, an annular air inlet pipe and an air inlet branch pipe to replace the original several layers of orifice plates, so as to achieve uniform air intake of pressure spray in a simpler way. It has a simple structure and low manufacturing cost. At the same time, the air inlet resistance is smaller than that of the orifice plate, the fan power requirement is low, and no simulation calculation and debugging are required, so it is easy to use.

[0012] 2. This device uses a guide plate to further enhance the stability of the airflow direction, prevent the generation of vortices, increase the gas circulation rate, and thus improve the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0014] Figure 2 It is a structural sectional view of the utility model.

[0015] Description of reference numerals:

[0016] 1. Drying cylinder; 2. Annular air inlet pipe; 3. Main air inlet pipe; 4. Branch air inlet pipe; 5. Guide plate. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 2 As shown, it comprises a drying cylinder 1, an annular air inlet pipe 2 is arranged above the drying cylinder 1, the annular air inlet pipe 2 is connected to the drying cylinder 1 through a plurality of air inlet branch pipes 4, the plurality of air inlet branch pipes 4 are evenly arranged along the circumference below the annular air inlet pipe 2, the annular air inlet pipe 2 is connected to an air inlet main pipe 3, and the air inlet main pipe 3 is connected to an external air supply device;

[0019] A plurality of guide plates 5 are arranged in the air inlet branch pipe 4 . The guide plates 5 are cross-arranged in the air inlet branch pipe 4 , and the arrangement direction of the guide plates 5 is aligned with the axis direction of the air inlet branch pipe 4 .

[0020] The working principle of this utility model:

[0021] The gas is input into the air inlet main pipe 3 from the air supply equipment, and then enters into several air inlet branch pipes 4 after passing through the annular air inlet pipe 2, and the guide plate 5 guides the gas in the air inlet branch pipe 4, so that multiple air flows can flow downward along the direction of the air inlet branch pipe 4 respectively, so that the air flows of several air inlet branch pipes 4 can flow downward evenly after entering the drying cylinder 1, thereby reducing the generation of vortexes and improving the efficiency of air intake and drying.

[0022] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or within the equivalent forms of such scope and boundaries.

Claims

1. A pressure spray air inlet device, comprising a drying cylinder (1), characterized in that: An annular air inlet pipe (2) is provided above the drying cylinder (1); the annular air inlet pipe (2) is connected to the drying cylinder (1) via a plurality of air inlet branch pipes (4); an air inlet main pipe (3) is connected to the annular air inlet pipe (2); and the air inlet main pipe (3) is connected to an external air supply device.

2. A pressure spray air inlet device according to claim 1, characterized in that: The plurality of air inlet branch pipes (4) are evenly arranged along the circumference below the annular air inlet pipe (2).

3. A pressure spray air inlet device according to claim 2, characterized in that: A plurality of guide plates (5) are arranged in the air inlet branch pipe (4).

4. A pressure spray air inlet device according to claim 3, characterized in that: A plurality of guide plates (5) are cross-arranged in the air inlet branch pipe (4), and the arrangement direction of the guide plates (5) is aligned with the axial centerline direction of the air inlet branch pipe (4).

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