Simple and efficient replaceable oxygen-enriched mixing device for fan

Abstract

The utility model discloses a simple and efficient replaceable oxygen -enriched mixing device for fan. The utility model discloses a mixing device main body cylinder, air inlet channel sets up in the lower part of the cylinder for introducing air, oxygen inlet channel sets up in the circumference of the cylinder and is close to the lower part for introducing oxygen, internal oxygen diffusion structure sets up in the inside of the cylinder and is located the oxygen inlet channel end for the oxygen primary dispersion, central mixing structure sets up in the middle part of the cylinder for the air and oxygen mixture, the air -out connecting mouth sets up in the lower part of the cylinder for the mixed gas output to the fan air inlet. The utility model can make the air that pumps into the combustion kiln become the oxygen -enriched gas to provide the oxygen -enriched combustion condition for the combustion industry by the quick small -range modification fan for the combustion industry.

Description

Technical Field

[0001] This utility model relates to the field of oxygen-enriched combustion technology, specifically to a simple, efficient, and replaceable oxygen-enriched mixing device for fans. Background Technology

[0002] As industrial combustion processes are high-energy-consuming and high-polluting industries, energy conservation and emission reduction have become core tasks in current transformation projects. Research shows that replacing air with oxygen-enriched gas with a high oxygen content in combustion furnaces enhances fuel combustion, significantly increases heat output leading to higher efficiency in subsequent heat recovery processes, and increases the oxygen content in the combustion gases, resulting in more complete combustion and greatly reducing incomplete combustion and oxidative pollutants, thus achieving energy conservation and emission reduction. Oxygen-enriched combustion significantly improves the energy conservation and emission reduction capabilities of the combustion industry. Utility Model Content

[0003] The purpose of this invention is to provide a simple, efficient, and replaceable oxygen-enriched mixing device for fans, so as to better adapt to the oxygen-enriched combustion process.

[0004] This utility model includes:

[0005] The main body of the mixer;

[0006] An air intake channel is provided at the lower part of the cylinder body for introducing air;

[0007] An oxygen intake channel is located around the circumference of the cylinder and near the bottom, for introducing oxygen.

[0008] An internal oxygen dispersion structure is provided inside the cylinder and located at the end of the oxygen inlet channel to initially disperse oxygen.

[0009] A central mixing structure is located in the middle of the cylinder and is used to mix air and oxygen;

[0010] An air outlet is located at the lower part of the cylinder and is used to output the mixed gas to the fan intake port;

[0011] The internal oxygen dispersion structure includes two perforated plates for graded dispersion of oxygen; the central mixing structure is a cylindrical structure with holes at the top to promote gas mixing; and the air outlet is replaceable to accommodate different fan inlet sizes.

[0012] Furthermore, the internal oxygen diffusion structure includes upper and lower hollow annular perforated plates and sidewall annular plates. The upper perforated plate has through holes with a diameter of 20 mm and a spacing of 30 mm, and the lower perforated plate has a hole diameter of 10 mm, a spacing of 15 mm, and a hole density that is twice that of the upper layer.

[0013] Furthermore, the central mixing structure is a hollow cylinder with no holes at the bottom and through holes of 20 mm in diameter and 30 mm in spacing evenly distributed at the top.

[0014] Furthermore, the air outlet is a process pipe section with the same diameter as the fan air intake channel. An oxygen concentration sampling tube is provided on its outer wall 50 mm from the lower edge, and several triangular support ribs are arranged along the circumference on the side of the pipe section.

[0015] Furthermore, the oxygen concentration sampling tube is a stainless steel tube with a diameter of 12 mm and a wall thickness of 2 mm, with an instrument switch valve at the end and three supporting ribs at 120° intervals at the base.

[0016] Furthermore, the oxygen intake channel is connected to the internal oxygen diffusion structure through a barrel-shaped oxygen airflow distribution structure. The barrel-shaped oxygen airflow distribution structure is a cylindrical cavity that expands outward by 80 mm within a range of 350 mm from the bottom edge of the cylinder, and its top is provided with a 30° chamfer to form an airflow acceleration channel.

[0017] Furthermore, an annular sound-absorbing gap is formed between the inner wall of the cylinder and the internal oxygen diffusion structure. The gap is filled with polyester fiber sound-absorbing cotton wrapped with non-woven fabric and sealed by a 2 mm thick annular perforated plate. The perforated plate has through holes with a diameter of 40 mm and a spacing of 50 mm.

[0018] Furthermore, the oxygen intake channel includes a detachable stainless steel straight pipe, flange, elbow and tee forming an oxygen connection channel, which is connected to the barrel-shaped oxygen flow distribution structure through the flange.

[0019] Furthermore, the air outlet and the fan intake are connected by a flange or a rigid connection, and the entire connection can be replaced to accommodate fan intakes of different diameters.

[0020] Furthermore, the cylinder, orifice plate, and oxygen connection channel are all made of stainless steel.

[0021] The beneficial effects of this utility model are:

[0022] This invention relates to a mixing device used in the combustion industry. It allows for rapid, small-scale modification of blowers to convert the air pumped into the combustion furnace into oxygen-enriched gas, providing oxygen-enriched combustion conditions. This mixing device can also be used as the air intake structure of a blower. It can continue operating without reverting to the modified structure, regardless of whether oxygen-enriched or non-oxygen-enriched processes are used, thus achieving flexible switching between combustion conditions. This invention is compact, lightweight, and easy to install. It can be easily operated manually in any space that meets minimum installation requirements, significantly reducing the impact of equipment modifications on operating conditions and the economic losses caused by downtime. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external and internal cross-sectional structure of this utility model.

[0024] Figure 2 This is a side view of the present invention.

[0025] Figure 3a This is a schematic diagram of a replaceable filter structure for the air intake.

[0026] Figure 3b for Figure 3a Top view.

[0027] Figure 4a This is a schematic diagram of the internal oxygen diffusion structure.

[0028] Figure 4b for Figure 4a Top view.

[0029] Figure 5 This is a schematic diagram of the noise reduction structure.

[0030] Figure 6a This is a schematic diagram of a barrel-shaped oxygen flow distribution structure.

[0031] Figure 6b for Figure 6a Top view.

[0032] Figure 7 This is a schematic diagram showing the connection and installation of this utility model with a fan. Detailed Implementation

[0033] The present invention will be further explained below with reference to the embodiments and accompanying drawings. The following embodiments are only used to illustrate the present invention, but are not intended to limit the scope of implementation of the present invention.

[0034] like Figure 1 , Figure 2 As shown in the embodiment of this application, a simple, efficient, and replaceable oxygen-enriched mixing device for a fan includes an air outlet connection port 1, a replaceable filter structure for the air intake port 2, an internal oxygen dispersion structure 3, a silencing structure 4, a central mixing structure 5, a barrel-shaped oxygen airflow distribution structure 6, a gas purity sampling tube 7, and an oxygen connection channel 8. The outer wall of the device is composed of the oxygen connection channel, the barrel-shaped oxygen airflow distribution structure connected thereto, and an outer cylinder. The bottom of the device has an open air intake port, which integrates a replaceable filter structure and a modular silencing plate. The lower part of the inner cylinder wall of the device and the annular outlet of the barrel-shaped oxygen airflow distribution structure have an internal oxygen dispersion structure. A central mixing structure is set in the center. The inner cylinder wall of the device has a silencing structure with a non-circularly filled sound-absorbing cotton component. The lower part of the central mixing structure is connected to the air outlet pipe through the air outlet connection port, which is connected to the air intake port of an external fan. A sampling and detection port is set on the air outlet connection port.

[0035] In a preferred embodiment, the air outlet 1 is a process pipe with the same size as the air intake channel of the fan. It can be replaced according to different fan intake channel diameters. The bottom can be connected to the fan intake channel by a flange or other rigid connection. A gas purity sampling pipe 7 is set at 50mm from the lower edge of the pipe wall of the air outlet 1 for subsequent analysis sampling. Several triangular support ribs are arranged on the side of the pipe in a circular pattern.

[0036] In a preferred example, such as Figure 3a and Figure 3b As shown, the replaceable filter structure 2 of the air intake consists of a perforated plate, filter cotton, supporting ribs, and fastening bolts 2-2. From top to bottom, it comprises a perforated plate 2-3, filter cotton 2-4, supporting ring plate, and supporting rib 2-1. The supporting rib is welded to the bottom supporting ring plate of the bottom cylindrical device to form a supporting frame. A replaceable polyurethane filter cotton with a filtration accuracy of 15ppi and a thickness of 30mm, cut according to the circumferential installation dimensions, is placed on it. The filter cotton is pressed and fixed by the perforated plate under the influence of gravity. The perforated plate has evenly distributed holes with a diameter of 20mm and a spacing of 30mm between each pair of holes.

[0037] In a preferred example, such as Figure 4a and Figure 4b As shown, the internal oxygen dispersion structure 3 is a permeable dispersion structure composed of upper and lower hollow annular perforated plates and sidewall annular plates. Oxygen enters from both sides and exits from the upper and lower hollow annular perforated plates. The upper perforated plate has evenly distributed holes with a diameter of 20 mm and a spacing of 30 mm between each hole. Figure 4b In the perforated area 3-1 shown, the lower perforated plate has twice the perforation density and half the perforation diameter compared to the upper perforated plate, with each hole having a diameter of 10mm and a spacing of 15mm between each other.

[0038] In a preferred example, such as Figure 5 As shown, the silencing structure 4 is designed to fit the inner wall 4-3 of the main cylinder of the mixer, with a lower gap of 50mm and an upper trapezoidal deformation (the bottom edge of the trapezoidal deformation is 100mm). The outer layer of the gap is separated from the internal space of the mixer by a 2mm thick annular perforated plate 4-2. The perforated plate has evenly distributed holes with a diameter of 40mm and a spacing of 50mm between each pair. The gap is filled with polyester fiber silencing cotton 4-1 wrapped with non-woven fabric.

[0039] In a preferred example, the central mixing structure 5 is a hollow cylinder. The lower part of the cylinder is divided at a distance of 100mm from the internal oxygen dispersing structure 3 in the overall arrangement. The upper part of the interface has holes with a diameter of 20mm and a spacing of 30mm between each other, which are evenly distributed on the perforated plate. The lower part of the interface is a cylinder without holes.

[0040] In a preferred example, such as Figure 6a and Figure 6b As shown, the barrel-shaped oxygen airflow uniform distribution structure 6 is a cylindrical structure that expands outward by 80mm within a range of 350mm from the bottom edge upward on the lower part of the outer wall of the main body of this mixer. The top of this cavity is connected to the air inlet of the internal oxygen diffusion structure 3, and the top cavity is a triangular top structure with an angle of 30°, so as to achieve a more uniform diffusion of airflow before accelerating its entry into the interior.

[0041] In a preferred example, the gas purity sampling tube 7 is a 12×2mm stainless steel sampling tube (12mm in diameter and 2mm in wall thickness), equipped with an instrument switch valve at the end, and a circumferentially distributed support rib structure at a spacing of 120° at the root.

[0042] In a preferred example, the oxygen connection channel 8 is a pipe fitting consisting of a stainless steel straight pipe, flange, elbow, and tee, which is connected to the mixer via a flange and can be freely adjusted for installation according to on-site conditions.

[0043] like Figure 7 As shown, the workflow of this utility model is divided into an oxygen channel and an air channel. The oxygen flow direction, in the order of inlet and outlet, is as follows: oxygen is connected to the oxygen connection channel 8 via an external oxygen supply pipe, flows into the barrel-shaped oxygen distribution structure 6 from the oxygen connection channel 8, diffuses, and then enters the internal oxygen dispersion structure 3 in a circumferential inlet manner. It disperses into the interior through the upper and lower perforated plates and is then drawn into the central mixing structure 5 by a fan. The air flow direction is as follows: the mixer draws air from the outside through the replaceable filter structure 2 at the air intake, passes through the filter structure 2, and then through the upper and lower perforated plates of the internal oxygen dispersion structure 3 to complete the initial gas mixing before entering the cylinder. It is then drawn into the central mixing structure 5 by a fan. The two airflows, air and oxygen, complete a secondary gas mixing in the central mixing structure 5. After mixing, the mixture is pumped into the fan intake port through the air outlet connection port 1. The gas purity sampling tube 7 continuously extracts the mixed gas during the process and sends it to the oxygen concentration analyzer for concentration measurement.

[0044] This invention appropriately increases the oxygen content in the combustion gas during combustion, which greatly improves the incomplete combustion environment. After increasing the combustion heat, it can reduce fuel consumption as much as possible, thus saving fuel. Moreover, under high temperature and complete combustion, the quality of the combustion products is greatly improved compared with the incomplete combustion products before the oxygen enrichment modification. Furthermore, the content of oxidizing gases in the combustion exhaust gas is reduced, and a large amount of fully combusted gases are enriched, which facilitates low-consumption treatment of subsequent exhaust gas processes, thereby achieving the effect of energy saving and emission reduction.

[0045] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A simple, efficient, and replaceable oxygen-enriching mixing device for fans, characterized in that, include: The main body of the mixer; An air intake channel is provided at the lower part of the cylinder body for introducing air; An oxygen intake channel is located around the circumference of the cylinder and near the bottom, for introducing oxygen. An internal oxygen dispersion structure is located inside the cylinder at the end of the oxygen inlet channel, and is used for the initial dispersion of oxygen. A central mixing structure is located in the middle of the cylinder and is used to mix air and oxygen; An air outlet is located at the lower part of the cylinder and is used to output the mixed gas to the fan intake port; The internal oxygen dispersion structure includes two perforated plates for graded dispersion of oxygen; the central mixing structure is a cylindrical structure with holes at the top to promote gas mixing; and the air outlet is replaceable to accommodate different fan inlet sizes.

2. The oxygen-enriched mixing device according to claim 1, characterized in that, The internal oxygen diffusion structure includes two layers of hollow annular perforated plates and sidewall annular plates. The upper perforated plate has through holes with a diameter of 20 mm and a spacing of 30 mm. The lower perforated plate has holes with a diameter of 10 mm, a spacing of 15 mm, and a hole density that is twice that of the upper layer.

3. The oxygen-enriched mixing device according to claim 1 or 2, characterized in that, The central mixing structure is a hollow cylinder with no holes at the bottom and through holes of 20 mm in diameter and 30 mm in spacing evenly distributed at the top.

4. The oxygen-enriched mixing device according to claim 1, characterized in that, The air outlet is a process pipe section with the same diameter as the fan air inlet channel. An oxygen concentration sampling tube is provided on its outer wall 50 mm from the lower edge, and several triangular support ribs are arranged along the circumference on the side of the pipe section.

5. The oxygen-enriched mixing device according to claim 4, characterized in that, The oxygen concentration sampling tube is a stainless steel tube with a diameter of 12 mm and a wall thickness of 2 mm. It is equipped with an instrument switch valve at the end and three support ribs are set at 120° intervals at the base.

6. The oxygen-enriched mixing device according to claim 1, characterized in that, The oxygen intake channel is connected to the internal oxygen diffusion structure through a barrel-shaped oxygen airflow uniform distribution structure. The barrel-shaped oxygen airflow uniform distribution structure is a cylindrical cavity that expands outward by 80 mm within a range of 350 mm from the bottom edge of the cylinder, and its top is provided with a 30° chamfer to form an airflow acceleration channel.

7. The oxygen-enriched mixing device according to claim 1 or 6, characterized in that, An annular sound-absorbing gap is formed between the inner wall of the cylinder and the internal oxygen diffusion structure. The gap is filled with polyester fiber sound-absorbing cotton wrapped with non-woven fabric and sealed by a 2 mm thick annular perforated plate. The perforated plate has through holes with a diameter of 40 mm and a spacing of 50 mm.

8. The oxygen-enriched mixing device according to claim 1, characterized in that, The oxygen intake channel includes a detachable stainless steel straight pipe, flange, elbow and tee, which is connected to the barrel-shaped oxygen flow distribution structure through the flange.

9. The oxygen-enriched mixing device according to claim 1, characterized in that, The air outlet and the fan intake are connected by a flange or rigid connection, and can be replaced as a whole to adapt to fan intakes of different diameters.

10. The oxygen-enriched mixing device according to claim 8, characterized in that, The cylinder, orifice plate, and oxygen connection channel are all made of stainless steel.

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