Coal-based auxiliary material adding nozzle

Abstract

The utility model discloses a coal -based auxiliary material is added and uses nozzle belongs to coal -based auxiliary material is added and uses nozzle technical field, solves the problem of the nozzle blockage due to the agglomerate accumulation in the coal -based auxiliary material addition, this coal -based auxiliary material is added and uses nozzle, including nozzle cavity, the inner wall of nozzle cavity is installed with fixed link, and the fixed link is installed with fan blade subassembly on, fan blade subassembly is located at the positive center of nozzle cavity, fan blade subassembly includes fixed shaft, and the fixed shaft is fixed in the positive center of nozzle cavity through fixed link, and the impeller is movably connected on the fixed shaft, and the periphery of impeller is surrounded with a plurality of blade fan blades in array, in the utility model, the coal -based auxiliary material belongs to the liquid of higher viscosity, and when spraying, it needs higher pressure, and the high -pressure coal -based auxiliary material liquid flows through the nozzle cavity and gives the blade fan blade enough kinetic energy, drives the blade fan blade to rotate, and the blade fan blade rotates and breaks the agglomerated particulate matter, effectively prevents the agglomerated particulate from accumulating in the nozzle outlet, avoids the nozzle blockage.

Description

Technical Field

[0001] This utility model relates to the technical field of nozzles for adding coal-based auxiliary materials, and in particular to a nozzle for adding coal-based auxiliary materials. Background Technology

[0002] In iron ore pellet production, binders need to be added to the iron concentrate. Bentonite is the main binder used in China, but it has drawbacks such as high proportion requirements, large residues, and reduced pellet grade. To solve this problem, Academician Jiang Tao's team at Central South University developed a coal-based additive as a pellet binder, which can perfectly replace bentonite.

[0003] The coal-based additive is a colloidal aqueous solution that needs to be evenly sprayed onto the surface of the iron concentrate using an atomizing nozzle. Initially, Baima pelletizing used ordinary nozzles for atomizing and adding the coal-based additive, but this resulted in easy nozzle clogging. Upon examination of the clogging material, it was found that the clogging consisted of tiny particles from the coal-based additive or solidified lumps from the pipeline. These particles were relatively loose and easily crushed, but their aggregation at the nozzle outlet caused blockage.

[0004] The common way to solve the nozzle clogging problem in the existing technology is to use nozzles with larger orifice diameters. However, the atomization effect is worse when the orifice diameter is increased, and the uniform distribution cannot be achieved. Moreover, the nozzle will still become clogged as the working time increases.

[0005] Therefore, this invention designs a nozzle for adding coal-based auxiliary materials that can prevent clogging, based on the properties of coal-based auxiliary materials. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a nozzle for adding coal-based auxiliary materials, which solves the problem of nozzle clogging caused by agglomerates during the addition of coal-based auxiliary materials.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A nozzle for dispensing coal-based auxiliary materials includes a nozzle cavity, a fixing rod installed on the inner wall of the nozzle cavity, and a fan blade assembly installed on the fixing rod; the fan blade assembly is located at the center of the nozzle cavity.

[0008] In this solution, the coal-based auxiliary material is a high-viscosity liquid, which requires high pressure during spraying. When the high-pressure coal-based auxiliary material liquid flows through the nozzle cavity, it provides sufficient kinetic energy to the fan blade assembly, causing the fan blade assembly to rotate. While the fan blade assembly rotates, it breaks up the agglomerated particles, effectively preventing the agglomerated particles from accumulating at the nozzle outlet and avoiding nozzle blockage.

[0009] Furthermore, the fan blade assembly includes a fixed shaft, which is fixed to the center of the nozzle cavity by a fixing rod; an impeller is movably connected to the fixed shaft, and several blade fan blades are arranged in an array around the impeller.

[0010] In this design, the impeller sleeve is mounted on a fixed shaft and can rotate freely. When the high-pressure liquid of the coal-based auxiliary material flows through the nozzle cavity, the liquid drives the blades and impeller to rotate.

[0011] Furthermore, the blades of the blade fan are bent in the direction in which the liquid enters the nozzle cavity; the matrix composed of several blade fan blades has a conical structure, and the tip of the conical structure faces the direction in which the liquid advances in the nozzle cavity.

[0012] In this design, when the coal-based auxiliary liquid flows through the nozzle cavity, it can fully scour several blades, thereby driving the blades to rotate.

[0013] Furthermore, the blade fan blades are installed at a 40-60° angle to the cross-section of the impeller.

[0014] In this design, when the high-pressure liquid flows through the nozzle cavity, it impacts the blade fan at a 50-30° angle, causing the blade fan to rotate. Furthermore, if the installation angle of the blade fan is too small or too large, it will hinder the flow of liquid within the nozzle cavity; therefore, an installation angle of 40-60° is selected.

[0015] Furthermore, four fixing rods are provided, which are evenly distributed in a ring; one end of each fixing rod is fixed to the inner wall of the nozzle cavity, and the other end of each fixing rod is connected to a fixing shaft.

[0016] In this design, four fixing rods are distributed circumferentially, which can provide a uniform fixing force around the fixing shaft to maintain the dynamic balance of the blade fan during rotation.

[0017] Furthermore, the edges of the blade fan are edged.

[0018] In this design, the sharp edges facilitate the breaking up of agglomerates in the fluid.

[0019] The beneficial effects of this utility model are: In the coal-based auxiliary material mixing nozzle provided by this utility model, when the high-pressure coal-based auxiliary material liquid flows through the nozzle cavity, the liquid impacts the blade fan blade at a 50-30° angle, causing the blade fan blade to rotate. The greater the liquid pressure, the faster the fan blade rotates. Since coal-based auxiliary materials are high-viscosity liquids, high pressure is required for spraying. The high-pressure coal-based auxiliary material liquid provides sufficient kinetic energy to the blade fan blade, and the sharp edges of the blade fan blade break up agglomerated particles, effectively preventing agglomerated particles from accumulating and clogging the nozzle at the nozzle outlet. By cleverly utilizing the liquid's kinetic energy to convert it into the mechanical energy of the rotating blade fan blade, and then using the rotating blade fan blade to break up agglomerated particles in the liquid, the problem of easy clogging of ordinary nozzles during coal-based auxiliary material mixing is successfully solved. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of a nozzle for adding coal-based auxiliary materials according to this utility model; Figure 2 This is a side view of a nozzle for adding coal-based auxiliary materials according to this utility model.

[0021] Figure label: 1. Nozzle cavity; 2. Blade fan blade; 3. Impeller; 4. Fixed shaft; 5. Fixed rod; Detailed Implementation The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0022] like Figure 1 and Figure 2 As shown, this embodiment provides a nozzle for adding coal-based auxiliary materials. This nozzle has bladed fan blades 2 installed inside the nozzle cavity 1. The rotating bladed fan blades 2 break up agglomerates, thereby solving the problem of agglomerates accumulating and clogging the nozzle in coal-based auxiliary materials. Specifically, it includes: Nozzle cavity 1, fixing rod 5, and fan blade assembly; A fixing rod 5 is installed on the inner wall of the nozzle cavity 1, and a fan blade assembly is mounted on the fixing rod 5; the fan blade assembly is located at the center of the nozzle cavity 1. The coal-based auxiliary material is a high-viscosity liquid, requiring high pressure during injection. The high-pressure coal-based auxiliary material liquid flowing through the nozzle cavity 1 provides sufficient kinetic energy to the fan blade assembly, causing it to rotate. Simultaneously, the rotating fan blade assembly breaks up agglomerated particles, effectively preventing the accumulation of agglomerated particles at the nozzle outlet and effectively avoiding nozzle clogging.

[0023] The fan blade assembly includes a fixed shaft 4, an impeller 3, and blade fan blades 2. The fixed shaft 4 is fixed to the center of the nozzle cavity 1 by a fixing rod 5. The impeller 3 is movably connected to the fixed shaft 4, and several blade fan blades 2 are arranged in an array around the impeller 3. The impeller 3 is mounted on the fixed shaft 4 and can rotate freely. When the high-pressure liquid of the coal-based auxiliary material flows through the nozzle cavity 1, the liquid drives the blade fan blades 2 and the impeller 3 to rotate.

[0024] The blades 2 are curved in the direction in which the liquid enters the nozzle cavity 1; the matrix of several blades 2 forms a conical structure, with the tip of the cone facing the direction of liquid movement in the nozzle cavity 1. This design allows the coal-based auxiliary liquid to effectively scour the blades 2 as it flows through the nozzle cavity 1, thereby driving the blades 2 to rotate.

[0025] The blade fan blade 2 and impeller 3 are installed at a cross-section of 40-60°. When the high-pressure liquid flows through the nozzle cavity 1, the liquid impacts the blade fan blade 2 at a 50-30° angle, causing the blade fan blade 2 to rotate. In addition, if the installation angle of the blade fan blade 2 is too small or too large, it will hinder the flow of liquid in the nozzle cavity 1, so an installation angle of 40-60° is selected.

[0026] Four fixing rods 5 are provided, and the four fixing rods 5 are evenly distributed in a ring. One end of the four fixing rods 5 is fixed to the inner wall of the nozzle cavity 1, and the other end of the four fixing rods 5 is connected to the fixing shaft 4. The four fixing rods 5 are distributed in a ring, which can provide a uniform fixing force to the fixing shaft 4 to maintain the dynamic balance of the blade fan blade 2 during rotation.

[0027] The blade fan blade 2 has a sharp edge, which makes it easy to break up agglomerates in the fluid.

[0028] The working principle of this embodiment is as follows: In this embodiment, the nozzle for dispensing coal-based auxiliary materials uses a 50-30° angled impact on the blade blades 2 as the high-pressure coal-based auxiliary material flows through the nozzle cavity 1. This causes the blades 2 to rotate, and the higher the liquid pressure, the faster the blades rotate. Since coal-based auxiliary materials are high-viscosity liquids, they require high pressure during application. The high-pressure coal-based auxiliary material provides sufficient kinetic energy to the blade blades 2, and the sharp edges of the blades 2 break up any agglomerated particles, effectively preventing the accumulation of agglomerated particles at the nozzle outlet and clogging the nozzle.

[0029] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A nozzle for adding coal-based auxiliary materials, characterized in that: It includes a nozzle cavity (1), on the inner wall of the nozzle cavity (1) is a fixing rod (5), and a fan blade assembly is installed on the fixing rod (5); the fan blade assembly is located at the center of the nozzle cavity (1).

2. The nozzle for adding coal-based auxiliary materials according to claim 1, characterized in that: The fan blade assembly includes a fixed shaft (4), which is fixed to the center of the nozzle cavity (1) by a fixing rod (5); an impeller (3) is movably connected to the fixed shaft (4), and a number of blade fan blades (2) are arranged around the impeller (3).

3. The nozzle for adding coal-based auxiliary materials according to claim 2, characterized in that: The blade (2) is bent in the direction of liquid entering the nozzle cavity (1); the matrix composed of several blades (2) is conical, and the tip of the conical structure is directed towards the direction of liquid advancement in the nozzle cavity (1).

4. The nozzle for adding coal-based auxiliary materials according to claim 3, characterized in that: The blade fan (2) is installed at a cross-section of 40-60° with the impeller (3).

5. The nozzle for adding coal-based auxiliary materials according to claim 2, characterized in that: The fixing rod (5) is provided in four parts, and the four fixing rods (5) are evenly distributed in a ring; one end of the four fixing rods (5) is fixed to the inner wall of the nozzle cavity (1), and the other end of the four fixing rods (5) is connected to the fixing shaft (4).

6. The nozzle for adding coal-based auxiliary materials according to any one of claims 2 to 5, characterized in that: The blade fan (2) has an edge edge.

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