Fire cylinder type direct heating furnace

Abstract

The utility model discloses a fire cylinder type direct heating furnace in the field of heating furnaces, which comprises a base, a combustion component connected to the top of the base, a heat exchange component connected to the top of the base, and a filter component connected to the top of the base. According to the device, the spiral pipe structure is adopted, flames generated by combustion can be located in the spiral pipe, the heat exchange efficiency of a heat exchange agent and the spiral pipe is improved, and the problem that external high temperature cannot be utilized is solved.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and in particular to a fire tube type direct heating furnace. Background Technology

[0002] Heating water, imported crude oil, or oil-water mixtures all require heating. Existing heating furnaces using indirect heating methods require heating coils inside the furnace, resulting in bulky equipment and increased costs. In certain situations, a more economical direct heating method, namely a fire-tube direct heating furnace, can be used.

[0003] Chinese Patent CN215337060U discloses a fire-tube type direct heating furnace, including a heating furnace and a combustion chamber. The combustion chamber is fixedly installed on one side of the heating furnace, and a chimney is fixedly installed above the combustion chamber. A flue is provided inside the heating furnace, with one end of the flue penetrating the surface of the heating furnace and fixedly connected to the combustion chamber, and the other end of the flue penetrating the surface of the heating furnace and communicating with the chimney. An mounting block is fixedly installed on the inner top surface of the heating furnace. In this invention, by setting up a drive motor, a bidirectional lead screw, threaded blocks, mounting blocks, a sliding groove, a slider, a connecting ring, and scrapers, the output end of the drive motor drives the bidirectional lead screw to rotate. Under the limiting action of the sliding groove, the two threaded blocks move closer or further apart, thereby causing multiple scrapers on the surfaces of the two rings to move left and right, which can scrape away dirt from the inner wall of the heating furnace, reducing the workload of workers when cleaning dirt and improving their work efficiency.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the above solutions use a combustion chamber for fuel combustion and then exchange heat through a flue. In the actual use of the above devices, since the main combustion process of the fuel is located in the combustion chamber, the temperature of the combustion chamber shell is high. However, this part of the heat cannot be utilized in the above devices, thereby reducing the fuel heat exchange efficiency. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] The purpose of this invention is to address the technical problems existing in the background art. This invention proposes a fire tube type direct heating furnace. This invention can effectively improve the fuel heat exchange conversion efficiency. The spiral tube structure of this device allows the flame generated by combustion to be inside the spiral tube, thereby increasing the heat exchange efficiency between the heat exchanger and the spiral tube and avoiding the problem of external high temperature not being usable.

[0007] This utility model proposes a fire tube type direct heating furnace, including a base, a combustion component connected to the top of the base, a heat exchange component connected to the top of the base, and a filter component connected to the top of the base.

[0008] By adopting the above technical solution, this solution can increase the contact area between the heat exchanger and the high-temperature components inside the device through the structure of the heat exchange component, thereby ensuring that the heat generated during the fuel combustion process is utilized by the heat exchanger as much as possible.

[0009] Preferably, the combustion component includes a combustion shell connected to the base, a combustion cover plate connected to the side of the combustion shell, a fuel pipe connected through the side of the combustion shell, an air inlet pipe connected through the side of the combustion shell, a nozzle connected through the fuel pipe, the nozzle being disposed inside the combustion shell, and an electric igniter connected to the side of the inner wall of the combustion shell, the electric igniter facing the nozzle.

[0010] By adopting the above technical solution, this solution can ensure the stability of the fuel combustion process of this device through the combination of electric igniter and nozzle.

[0011] Preferably, the heat exchange component includes a heat exchange housing connected to the base, a heat exchange cover plate connected to the top of the heat exchange housing, a circulation pipe connected to the outer end face of the heat exchange housing, and a docking ring connected to the end of the circulation pipe away from the heat exchange housing.

[0012] By adopting the above technical solution, this solution facilitates heat exchange between external equipment and this device through the combination of docking ring and circulation pipe, thereby ensuring the circulation of heat exchange medium.

[0013] Preferably, the combustion cover plate is connected to a spiral tube that penetrates the side of the heat exchange shell and is located inside the heat exchange shell. One end of the spiral tube away from the combustion cover plate is connected to a connector, and the other end of the connector is connected to an inverted U-shaped tube.

[0014] By adopting the above technical solution, this solution can prevent liquid inside the filter housing from entering the pipe through the inverted U-shaped tube structure, thereby preventing liquid backflow. At the same time, it ensures that the gas is discharged below the liquid level, thus guaranteeing the filtration effect of the liquid on the flue gas.

[0015] Preferably, the filter component includes a filter housing connected to the base, a sealing cover plate connected to the top of the filter housing, an inverted U-shaped tube extending into the bottom of the filter housing, an exhaust fan connected to the top of the sealing cover plate, a sealing pipe provided at the air inlet end of the exhaust fan, and the other end of the sealing pipe penetrating the sealing cover plate.

[0016] By adopting the above technical solution, this solution can ensure stable air pressure in the device through the combination of a sealing cover and an exhaust fan.

[0017] Preferably, the heat exchange housing contains a circulating heat exchange agent, the filter housing contains a liquid, the height of the sealing tube is above the liquid level, the height of the outlet end of the inverted U-shaped tube is below the liquid level, and the height of the highest point of the inverted U-shaped tube is higher than the liquid level.

[0018] By adopting the above technical solution, this solution can reduce environmental pollution during flue gas emission through liquid.

[0019] In summary, this utility model has at least one of the following beneficial effects:

[0020] This device uses a filter housing structure to filter the flue gas generated after combustion through the liquid inside, thereby retaining dust particles in the flue gas inside the filter housing, thus reducing the pollution emissions of this device. At the same time, the structure of the circulation pipe facilitates heat exchange between external equipment and this device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Fig. 1 This is a front view of an embodiment of a fire-tube type direct heating furnace according to the present invention;

[0023] Fig. 2 This is a schematic diagram of the spiral tube in an embodiment of the present invention;

[0024] Fig. 3 This is a schematic diagram of the nozzle structure in an embodiment of the present invention;

[0025] Reference numerals: 1. Base; 2. Combustion component; 201. Combustion shell; 202. Air inlet pipe; 203. Fuel pipe; 204. Combustion cover plate; 205. Nozzle; 206. Electric igniter; 3. Heat exchange component; 301. Heat exchange shell; 302. Circulation pipe; 303. Heat exchange cover plate; 304. Spiral tube; 305. Connector; 306. Inverted U-shaped tube; 4. Filter component; 401. Filter shell; 402. Sealing cover plate; 403. Exhaust fan. Detailed Implementation

[0026] The following is in conjunction with the appendix Figs. 1-3 The present invention will be described in further detail below.

[0027] Example 1

[0028] like Figs. 1-3 As shown in the figure, in order to solve the existing problems, this utility model discloses a fire tube type direct heating furnace, including a base 1, a combustion component 2 connected to the top of the base 1, a heat exchange component 3 connected to the top of the base 1, and a filter component 4 connected to the top of the base 1.

[0029] The combustion component 2 includes a combustion shell 201 connected to the base 1. A combustion cover plate 204 is connected to the side of the combustion shell 201. A fuel pipe 203 is connected through the side of the combustion shell 201. An air inlet pipe 202 is connected through the side of the combustion shell 201. A nozzle 205 is connected through the fuel pipe 203. The nozzle 205 is located inside the combustion shell 201. An electric igniter 206 is connected to the side of the inner wall of the combustion shell 201. The electric igniter 206 faces the nozzle 205.

[0030] The heat exchange component 3 includes a heat exchange housing 301 connected to the base 1. A heat exchange cover plate 303 is connected to the top of the heat exchange housing 301. A circulation pipe 302 is connected to the outer end face of the heat exchange housing 301. A docking ring is connected to one end of the circulation pipe 302 away from the heat exchange housing 301.

[0031] The combustion cover plate 204 is connected to a spiral tube 304, which penetrates the side of the heat exchange shell 301 and is located inside the heat exchange shell 301. One end of the spiral tube 304 away from the combustion cover plate 204 is connected to a connector 305, and the other end of the connector 305 is connected to an inverted U-shaped tube 306.

[0032] The specific working principle is as follows: This device can improve the contact area and efficiency between the flame combustion part and the heat exchange structure. Compared with the traditional device, this device directly sets the combustion part inside the heat exchange shell 301, so that the heat generated by the flame inside the spiral tube 304 directly contacts the heat exchange agent inside the heat exchange shell 301, thereby achieving the effect of heat transfer and ensuring that all high-temperature components of this device are in contact with the heat exchange agent.

[0033] When this device is in use, the structure of the air inlet pipe 202 enables the entry of combustion air. At this time, the exhaust fan 403 is turned on, and the exhaust fan 403 generates negative pressure inside the filter housing 401, thereby achieving a one-way gas flow route from the air inlet pipe 202 to the combustion housing 201, and then through the spiral pipe 304 and the connector 305, and finally into the filter housing 401 through the inverted U-shaped pipe 306. At this time, fuel is supplied to the combustion housing 201 through the fuel pipe 203, thereby achieving the heat exchange effect of this device.

[0034] The nozzle 205 is ignited by the electric igniter 206, which generates a flame at the nozzle 205. Due to the one-way gas flow, the flame enters the spiral tube 304 under the influence of the air flow, thereby increasing the temperature of the spiral tube 304. At this time, the heat exchange agent inside the heat exchange shell 301 comes into contact with the spiral tube 304, thus achieving a heat exchange effect. The structure of the spiral tube 304 can increase the heat exchange area.

[0035] After combustion, the flue gas enters the filter housing 401 through the connector 305 and the inverted U-shaped tube 306. At this time, the filter housing 401 contains liquid. The inverted U-shaped tube 306 discharges the flue gas at the bottom of the filter housing 401, so that the flue gas comes into contact with the liquid. The dust in the flue gas is dissolved by the liquid, and then the air after combustion is discharged.

[0036] Example 2

[0037] like Figs. 1-3As shown, in order to solve the existing problems in this embodiment, based on the same concept as the above embodiment one, the fire tube type direct heating furnace further includes: the filter component 4 includes a filter housing 401 connected to the base 1, a sealing cover plate 402 connected to the top of the filter housing 401, the inverted U-shaped tube 306 extending into the bottom of the filter housing 401, an exhaust fan 403 connected to the top of the sealing cover plate 402, a sealing pipe provided at the air inlet end of the exhaust fan 403, the other end of the sealing pipe penetrating the sealing cover plate 402, a circulating heat exchanger inside the heat exchange housing 301, a liquid inside the filter housing 401, the height of the sealing pipe being above the liquid level, the height of the air outlet end of the inverted U-shaped tube 306 being below the liquid level, and the height of the highest point of the inverted U-shaped tube 306 being higher than the liquid level.

[0038] The specific working principle is as follows: This device can effectively improve the stability and utilization of fuel heat exchange efficiency. Through the operation of the exhaust fan 403, this device can achieve a unidirectional airflow inside the inverted U-shaped tube 306 and the spiral tube 304, thereby ensuring that external air only enters the combustion shell 201 from the side of the air inlet pipe 202, and after combustion, the flue gas is drawn out by the exhaust fan 403, ensuring that the air does not flow back and ensuring the stability of the heat exchange process of this device.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A direct heating furnace of the fire tube type, comprising a base (1), characterized in that, A combustion component (2) is connected to the top of the base (1), a heat exchange component (3) is connected to the top of the base (1), and a filter component (4) is connected to the top of the base (1); the combustion component (2) includes a combustion shell (201) connected to the base (1), a combustion cover plate (204) is connected to the side of the combustion shell (201), a fuel pipe (203) is connected through the side of the combustion shell (201), an air intake pipe (202) is connected through the side of the combustion shell (201), and a nozzle (205) is connected through the fuel pipe (203). 205) is set inside the combustion shell (201), and an electric igniter (206) is connected to the inner wall side of the combustion shell (201), with the electric igniter (206) facing the nozzle (205); the heat exchange component (3) includes a heat exchange shell (301) connected to the base (1), a heat exchange cover plate (303) connected to the top of the heat exchange shell (301), a circulation pipe (302) connected to the outer end face of the heat exchange shell (301), and a docking ring connected to the end of the circulation pipe (302) away from the heat exchange shell (301).

2. The direct heating furnace of the fire tube type according to claim 1, characterized in that, The combustion cover plate (204) is connected to a spiral tube (304) that penetrates the side of the heat exchange shell (301). The spiral tube (304) is located inside the heat exchange shell (301). One end of the spiral tube (304) away from the combustion cover plate (204) is connected to a connector (305), and the other end of the connector (305) is connected to an inverted U-shaped tube (306).

3. A direct-heating furnace of the fire-tube type according to claim 2, characterized in that, The filter component (4) includes a filter housing (401) connected to the base (1), a sealing cover plate (402) connected to the top of the filter housing (401), an inverted U-shaped tube (306) extending into the bottom of the filter housing (401), an exhaust fan (403) connected to the top of the sealing cover plate (402), a sealing pipe provided at the air inlet end of the exhaust fan (403), and the other end of the sealing pipe penetrating the sealing cover plate (402).

4. A direct heating furnace of the fire tube type according to claim 3, characterized in that, The heat exchange housing (301) contains a circulating heat exchange medium, the filter housing (401) contains a liquid, the height of the sealing tube is above the liquid level, the height of the outlet end of the inverted U-shaped tube (306) is below the liquid level, and the height of the highest point of the inverted U-shaped tube (306) is higher than the liquid level.

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