Air heating device

Abstract

The utility model discloses air heating device, include: heating cavity, the heating cavity inside is equipped with the accommodation chamber, and both ends are open end, and both ends are along the port from big to small and present the funnel shape, and the funnel shape open end is equipped with air inlet pipeline and air supply pipeline respectively, the heating cavity accommodation chamber is equipped with the fixed base, and the fixed base outer surface is spirally wound with heating wire. The application provides a kind of heating device with simple structure, can evaporate pipeline water vapor efficiently, prevent dewing and sludge generation from source.

Description

Technical Field

[0001] This utility model relates to the field of air heating technology, and more specifically to an air heating device. Background Technology

[0002] In existing exhaust gas treatment systems, water-soluble gases need to be washed. During this process, the negative pressure in the plant's pipelines draws humid air into the pipelines, along with dust from the equipment. The moisture and dust combine in the pipelines to produce sludge, causing severe blockages. Furthermore, the sludge is corrosive, damaging the pipelines and significantly shortening their lifespan, increasing maintenance costs and frequency.

[0003] Therefore, there is an urgent need to design a heating device with a simple structure that can efficiently evaporate water vapor from pipelines, so as to prevent condensation and sludge formation from the source. Utility Model Content

[0004] This invention provides an air heating device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides an air heating device, comprising: a heating chamber, wherein the heating chamber has a receiving chamber inside, both ends are open, and the two ends are funnel-shaped from large to small along the port, and the funnel-shaped open ends are respectively provided with an air inlet pipe and an air delivery pipe; the receiving chamber of the heating chamber is provided with a fixed seat, and a heating wire is spirally wound on the outer surface of the fixed seat.

[0006] Preferably, the air supply pipe is connected to a one-way air inlet valve.

[0007] Preferably, the fixing base is a hollow cylindrical shape and is made of aluminum oxide.

[0008] Preferably, the fixing seat has a spiral groove along its outer surface, and the heating wire is fixed in the groove.

[0009] Preferably, the heating wire is electrically heated to a temperature of 100-250°C; the heating wire has a spiral structure, which extends the total length of the heating wire within a limited space and improves the heat exchange efficiency.

[0010] Preferably, the heating chamber has a spindle shape with varying widths from the air inlet pipe to the air outlet pipe. This is to allow air to enter quickly, increase the residence time, and ensure that the air is fully heated in the heating chamber.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. Anti-clogging: High-temperature gas evaporates water vapor, preventing moisture from combining with dust and eliminating sludge formation;

[0013] 2. Corrosion prevention: Eliminating condensation can delay pipeline corrosion and extend service life;

[0014] 3. Energy-saving and efficient: The variable diameter cavity design improves heating efficiency, and the temperature is adjustable to adapt to different working conditions.

[0015] This application utilizes high-temperature air to evaporate water vapor inside plant pipelines, effectively preventing condensation and fundamentally eliminating sludge formation. After using this device, pipeline blockages are significantly reduced, pipeline lifespan is extended, maintenance cycles are greatly increased, and maintenance costs are lowered. Attached Figure Description

[0016] 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 embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 The attached figure is a structural schematic diagram of this utility model.

[0018] Figure 2 The attached figure is a schematic diagram of the internal structure of this utility model.

[0019] Reference numerals: 1. Heating chamber; 2. Air inlet pipe; 3. Air delivery pipe; 4. Mounting base; 5. Heating wire. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, various embodiments of this patent will be described below with reference to text and accompanying drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details in the specification should not be used to limit this patent. That is, in some embodiments of this patent, these practical details are not essential. Furthermore, for ease of understanding, some conventional structures and components will be illustrated in the drawings in a simple schematic manner.

[0021] In the description of this patent, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 patent and simplifying the description, 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 patent.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this patent, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] In this patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this patent.

[0025] Because a large amount of moisture and dust are generated during the exhaust gas treatment process, the moist dust will be drawn into the plant pipeline by the negative pressure of the plant, which will cause blockage of the plant pipeline. This application uses electric heating wire to heat the air. The heater has a structure that gradually increases in size. When the air enters the heater, the residence time in the heater will be extended, and the air will be fully heated before entering the equipment to neutralize the moist air.

[0026] Please see the appendix Figure 1-2 The air heating device disclosed in this utility model includes: a heating chamber 1, wherein the two ends of the heating chamber 1 are funnel-shaped open ends that gradually narrow, and the whole is a spindle-shaped cavity. An air inlet pipe 2 and an air delivery pipe 3 are respectively connected to the narrow ends on both sides. The middle section inside the cavity is a larger diameter receiving chamber. The fixing base 4 is a hollow alumina cylinder, coaxially fixed in the center of the receiving chamber. The outer surface is provided with a spiral groove. The heating wire 5 is spirally and tightly wound in the groove. The heating wire 5 is connected to a power source.

[0027] During operation, the air intake pipe 2 guides air into the heating chamber 1. As the diameter of the chamber gradually increases, the air velocity decreases, allowing the air to fully contact and absorb heat from the spiral heating wire 5 within the chamber. After heating, the air flows out through the air supply pipe 3. The funnel-shaped structure increases the residence time of the air within the chamber, ensuring that it is heated to the target temperature.

[0028] To further optimize the above technical solution, the air supply pipe 3 is connected to a one-way air inlet valve.

[0029] The one-way inlet valve controls the unidirectional flow of high-temperature gas, ensuring that the gas can only be delivered towards the equipment's exhaust port. High-temperature air enters the exhaust gas pipe by pushing the one-way inlet valve open through the gas supply pipe 3; when the heating device stops working, the valve automatically closes to prevent moisture in the pipe from flowing back into the heating chamber 1 and to avoid damage to the heating wire due to moisture.

[0030] To further optimize the above technical solution, the fixing base 4 is a hollow cylindrical shape and is made of aluminum oxide.

[0031] The fixing base 4 is preferably made of alumina ceramic. Alumina ceramic is resistant to high temperature, has good insulation, and can withstand long-term heating at 250°C. Its hollow structure reduces weight and heat conduction loss, ensuring that the heat from the heating wire 5 is concentrated in the air for heating.

[0032] To further optimize the above technical solution, the fixing base 4 is provided with a spiral groove along its outer surface, and the heating wire 5 is fixed in the groove.

[0033] The spiral groove defines the position of the heating wire 5, preventing it from loosening due to vibration and ensuring its stable operation; the heating wire 5 is spirally distributed, extending the heating length within a limited space, increasing the heat exchange area per unit volume by 40%, and improving heating uniformity.

[0034] To further optimize the above technical solution, the heating wire 5 is electrically heated to a temperature of 100-250°C; the heating wire 5 has a spiral structure, which extends the total length of the heating wire within a limited space and improves the heat exchange efficiency.

[0035] The heating wire 5 can also be connected to a thermostat. The temperature of the heating wire 5 can be controlled by adjusting the voltage through the thermostat, so that the temperature of the heating wire 5 is between 100-250℃. The spiral structure makes the heating wire 5 form a continuous heating surface outside the fixed base 4, so that the air can make full contact with the heating wire 5 when it flows through. The thermostat automatically adjusts the temperature according to the data of the pipeline humidity sensor. For example, when the humidity is high, it will rise to 200℃ to ensure that the water vapor evaporates completely.

[0036] To further optimize the above technical solution, the heating chamber 1 is shaped into a spindle shape, with varying widths from the air inlet pipe 2 to the air delivery pipe 3. This is to allow air to enter quickly, increase the residence time, and allow the air to be fully heated in the heating chamber 1.

[0037] When air enters the intake pipe 2, its flow rate is high, quickly filling the heating chamber 1. After entering the heating chamber 1, the equipment diameter expands, the flow rate decreases, and the residence time increases. As it flows towards the delivery pipe 3, its diameter decreases, and the high-temperature air is quickly discharged through the one-way intake valve. This design allows air to enter the heating chamber 1 quickly and increases its residence time within it, ensuring that the air is fully heated. After passing through the one-way intake valve and being delivered to the equipment's exhaust port, the high-temperature air evaporates water vapor in the pipes, preventing condensation and sludge formation.

[0038] The air heating device evaporates water vapor from high-temperature gas, preventing moisture from combining with dust and eliminating sludge formation; eliminating condensation can delay pipe corrosion and extend service life; the variable diameter cavity design improves heating efficiency, and the temperature can be adjusted to adapt to different working conditions.

[0039] This application utilizes high-temperature air to evaporate water vapor inside plant pipelines, effectively preventing condensation and fundamentally eliminating sludge formation. After using this device, pipeline blockages are significantly reduced, pipeline lifespan is extended, maintenance cycles are greatly increased, and maintenance costs are lowered.

[0040] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air heating device, characterized in that, include: Heating chamber (1) is provided inside the heating chamber (1), with open ends at both ends. The two ends are funnel-shaped from large to small along the port. The funnel-shaped open ends are respectively provided with air inlet pipe (2) and air delivery pipe (3). The heating chamber (1) is provided with a fixed seat (4), and a heating wire (5) is spirally wound on the outer surface of the fixed seat (4).

2. The air heating device according to claim 1, characterized in that, The gas supply pipe (3) is connected to a one-way air inlet valve.

3. The air heating device according to claim 1, characterized in that, The fixing base (4) is a hollow cylindrical shape and is made of aluminum oxide.

4. The air heating device according to claim 1, characterized in that, The fixing seat (4) has a spiral groove along its outer surface, and the heating wire (5) is fixed in the groove.

5. The air heating device according to claim 1, characterized in that, The heating wire (5) is electrically heated to a temperature of 100-250°C. The heating wire (5) has a spiral structure, which extends the total length of the heating wire within a limited space and improves the heat exchange efficiency.

6. The air heating device according to claim 1, characterized in that, The heating chamber (1) has a spindle shape with varying widths from the air inlet pipe (2) to the air delivery pipe (3). The purpose is to allow air to enter quickly, increase the residence time, and allow the air to be fully heated in the heating chamber (1).

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