A diesel heating stove for hot melt coating

Abstract

The present invention discloses a diesel heating stove for hot-melt coating. The stove base body is closed at the bottom and is cylindrical. An air supply pipe is provided on the side wall of the stove base body. A burner cylinder is arranged inside the stove base body. A vertical oil passage hole is opened on the burner cylinder. Through the provided oil passage hole, the diesel is preheated to more than 200 °C before entering the burner cylinder for combustion. The preheated diesel is fully atomized through the atomization holes, and the air supply air flow forms a cyclone air flow inside the burner cylinder through the air inlet holes. The high-speed rotation of the cyclone air flow enables the atomized diesel to be fully mixed with air for combustion. The preheated diesel can be burned more quickly and fully to a higher temperature, and the combustion temperature can exceed 800 °C. It realizes the rapid heating of the hot-melt coating on site, meets the heating time and heating quantity requirements for the construction marking of the hot-melt coating. At the same time, the full high-temperature combustion of diesel greatly reduces air pollution emissions.

Description

Technical Field

[0001] The present invention relates to the technical field of road marking construction, and in particular to a diesel heating stove for hot-melt paint. Background Art

[0002] With the rapid development of highway construction in China, there are more and more line-drawing constructions of road markings. At present, hot-melt marking paint is still commonly used. The hot-melt paint needs to be melted on-site before use. At the construction site, a diesel stove is usually used to heat the hot-melt paint. Due to the high ignition point of diesel, the existing diesel stove directly flows diesel into the stove plate and blows air at the same time. While mixing and burning, the combustion flame is relatively long, resulting in incomplete combustion of diesel and low combustion efficiency. The heating temperature can generally only reach about 500 °C, which cannot fully meet the needs of on-site construction and marking of hot-melt paint.

[0003] The main problems existing in the existing diesel stove are as follows: After normal-temperature diesel directly flows into the stove plate, it is compressed by the air in the stove plate and then mixed with air and burned, resulting in low combustion value of diesel, low combustion efficiency, and the heating temperature generally reaching about 500 °C, which cannot fully meet the heating requirement of hot-melt paint construction, low construction efficiency, and at the same time, the air pollution caused by incomplete combustion of diesel is relatively large. Summary of the Invention

[0004] In order to overcome the technical problems in the background art, the present invention provides a diesel heating stove for hot-melt paint.

[0005] The technical solution adopted by the present invention to solve its technical problems is: A diesel heating stove for hot-melt paint, including a stove base body with a closed bottom in a cylindrical shape. An air supply pipe is provided on the side wall of the stove base body. A burner cylinder is provided in the stove base body. An annular fixing plate is connected to the upper end of the burner cylinder with a closed bottom. A vertical oil passage hole is opened on the burner cylinder. The oil passage hole is a blind hole extending to the bottom of the burner cylinder. The oil passage holes are arranged in a ring shape evenly along the burner cylinder. The top end of the oil passage hole is threadedly connected with an oil hole bolt for maintenance, and the bottom end is provided with an inner oil outlet hole horizontally communicating with the inner side of the burner cylinder;

[0006] An annular oil cavity communicating with all the oil passage holes is arranged in the annular fixing plate. An oil inlet pipe communicating with the annular oil cavity is arranged on the outer side part of the annular fixing plate;

[0007] A horizontal air inlet hole is opened on the barrel wall of the burner cylinder. The burner cylinder is placed in the stove base body through the annular fixing plate. A gap is provided between the burner cylinder and the stove base body to form an air chamber. A fire concentrating plate is further provided above the burner cylinder.

[0008] Furthermore, the air inlet holes on the barrel wall of the burner barrel are arranged in inclined rows. The air inlet holes are inclined and arranged in rows. The intake air of the air supply pipe enters the compressed air chamber formed by the distance between the burner barrel and the furnace base body, and forms a high-speed air flow after being accelerated through the air inlet holes. The inclined and row-wise arrangement of the air inlet holes enables the high-speed air flow to enter the burner barrel to form a cyclone air flow. The high-speed rotation of the cyclone air flow enables the atomized diesel oil and air to be fully mixed and burned, and can quickly reach a relatively high combustion temperature.

[0009] Furthermore, the air inlet holes on the barrel wall of the burner barrel are arranged in 45-degree inclined rows. The high-speed air flow enters the burner barrel to form a faster and more stable cyclone air flow, which is conducive to the full mixing and combustion of diesel oil and air.

[0010] Furthermore, the inner oil outlet holes at the bottom inside the burner barrel have the same height and are arranged in a ring shape, so as to realize the uniform spraying of diesel oil at the bottom inside the burner barrel. Through the cyclone air flow, high-efficiency cyclone combustion is formed, greatly improving the combustion efficiency.

[0011] Furthermore, atomizing holes are provided on the bottom barrel wall of the burner barrel. The atomizing holes have the same height as the inner oil outlet holes and are arranged in a staggered manner. The atomizing holes at the same height uniformly atomize the diesel oil sprayed out of the inner oil outlet holes. The atomized diesel oil is uniformly mixed with air inside the burner barrel, which can greatly improve the combustion efficiency and combustion temperature.

[0012] Furthermore, the aperture of the inner oil outlet hole is 3 mm, the aperture of the atomizing hole is 3 mm, and the center distance between adjacent atomizing holes and air inlet holes is 11 mm, so as to realize an appropriate intake air volume and air pressure of atomizing air. The atomizing holes can uniformly atomize the diesel oil sprayed out of the inner oil outlet holes. The aperture of the air inlet hole is 4 mm, so as to realize an appropriate intake air volume and air pressure of combustion air inside the burner barrel, form high-efficiency cyclone combustion and maintain an appropriate oxygen saturation degree, greatly improving the combustion efficiency and combustion temperature.

[0013] Furthermore, the center of the inner oil outlet hole is 10 mm away from the bottom surface of the burner barrel, so as to realize an appropriate oil supply volume, improve the combustion efficiency and combustion temperature. The inner oil outlet hole is 10 mm away from the bottom surface of the burner barrel, which is conducive to diesel ignition and can avoid blockage of the inner oil outlet hole.

[0014] Furthermore, the burner barrel and the furnace base body are arranged in concentric circles, and the gap between them forms an air chamber, where the gap between their barrel walls is 45 mm and the bottom gap is 20 - 30 mm.

[0015] The gap between the burner cylinder and the furnace base forms a relatively enclosed air chamber. Air is pressurized and compressed in the air chamber to form uniform compressed air outside the burner cylinder. The compressed air forms a strong cyclone airflow inside the burner cylinder through the diagonal air inlet holes. At the same time, the diesel oil ejected from the inner oil outlet hole is fully atomized through the atomization holes. The atomized diesel oil burns fully in the cyclone airflow inside the burner cylinder, and the combustion temperature can exceed 800 degrees. If the gap is too large or too small, it will cause excessive or insufficient compressed air in the air chamber, which has a great impact on the calorific value of diesel oil, directly resulting in a reduction in the atomization rate of fuel oil, insufficient oxygen saturation during combustion, poor combustion efficiency of the burner cylinder, and failure to reach a high combustion temperature.

[0016] Furthermore, the fire concentrating plate is provided with evenly arranged fire concentrating holes, and two handles are symmetrically arranged on the annular fixing plate. The evenly arranged fire concentrating holes make the combustion flames distributed evenly, avoiding overly long flames, facilitating the uniform heating of the hot melt coating in the container, improving the combustion efficiency and combustion temperature at the same time. The handles are used for the installation and disassembly of the burner cylinder.

[0017] Furthermore, the furnace base, the burner cylinder, and the fire concentrating plate are made of Q235 steel. Q235 steel has a moderate carbon content and good comprehensive performance. Its strength, plasticity, welding and other processing properties are balanced, which is beneficial to the drilling, welding, processing and manufacturing of the stove.

[0018] After the stove of the present invention is ignited, the diesel oil is preheated through the oil passage holes in the burner cylinder via the annular oil cavity, and the preheating temperature is raised to more than 200 °C. The diesel oil has reached a relatively high ignition point before mixing with air, and burns more fully after mixing with a relatively high air compression ratio; when the flame burns outwards, it passes through the fire concentrating plate outside the furnace head, further improving the combustion quality, making it more sufficient and more uniform. Through sufficient and uniform combustion, it is actually detected on-site with a high-temperature thermometer gun that the combustion temperature can exceed 800 °C.

[0019] Implementation process: The air supply pipe is connected to a fan, the fuel inlet pipe is inserted with diesel oil, and the diesel oil flows into the burner cylinder through the inner oil outlet hole. The fan is started after ignition. During the ignition and combustion process, the temperature of the burner cylinder itself is gradually heated, and at the same time, the diesel oil flowing through the annular oil cavity and the oil passage holes is heated, so that the temperature of the diesel oil exceeds 200 °C before entering the burner cylinder for combustion, making the diesel oil reach a relatively high ignition point temperature before mixing with air.

[0020] The gap between the burner cylinder and the furnace base forms a relatively enclosed air chamber. The air entering from the air supply pipe enters the air chamber for pressurized compression. Uniform compressed air is formed outside the burner cylinder. The compressed air forms a strong cyclone airflow inside the burner cylinder through the inclined air inlet holes. At the same time, the compressed air pressurizes and supplies air to the inside of the burner cylinder from the bottom through the atomization holes arranged staggeredly with the inner oil outlet holes, quickly and uniformly atomizing the diesel oil sprayed out from the inner oil outlet holes. The pre-heated diesel oil is fully atomized through the atomization holes. The atomized diesel oil burns fully in the cyclone airflow inside the burner cylinder. The high-speed airflow is accelerated through the air inlet holes to form a strong and stable cyclone airflow inside the burner cylinder. The high-speed rotation of the cyclone airflow enables the atomized diesel oil to be fully mixed and burned with the air, quickly reaching a relatively high combustion temperature, and the combustion temperature can exceed 800 °C.

[0021] The fire concentrating plate is provided with uniformly arranged fire concentrating holes, making the combustion flames evenly distributed, avoiding overly long flames, facilitating the uniform heating of the hot-melt coating in the container, and at the same time improving the combustion efficiency and combustion temperature.

[0022] The heating furnace can generate a high temperature above 800 °C, which can quickly heat the hot-melt coating on-site, meet the heating time and heating quantity requirements for the construction and marking of the hot-melt coating, and greatly improve the construction efficiency of the hot-melt coating.

[0023] The beneficial effects of the present invention are as follows: Through the provided oil passage holes, the diesel oil is pre-heated to exceed 200 °C before entering the burner cylinder for combustion. The pre-heated diesel oil has reached a relatively high ignition point before mixing with the air. The gap between the burner cylinder and the furnace base forms a relatively enclosed air chamber. The air is pressurized and compressed in the air chamber, and uniform compressed air is formed outside the burner cylinder. The compressed air forms a strong cyclone airflow inside the burner cylinder through the inclined air inlet holes. At the same time, the diesel oil sprayed out from the inner oil outlet holes is fully atomized through the atomization holes. The air intake of the air supply pipe enters the air chamber formed by the gap between the burner cylinder and the furnace base, and is accelerated through the air inlet holes to form a high-speed airflow entering the burner cylinder, maintaining an appropriate oxygen saturation degree inside the burner cylinder. The high-speed airflow enters the burner cylinder to form a strong cyclone airflow. The high-speed rotation of the cyclone airflow enables the atomized diesel oil to be fully mixed and burned with the air, quickly reaching a relatively high combustion temperature, and the combustion temperature can exceed 800 °C. Thus, it realizes the rapid heating of the hot-melt coating on-site, meets the heating time and heating quantity requirements for the construction and marking of the hot-melt coating, improves the construction efficiency of the hot-melt coating line, and at the same time, the present invention realizes the high-temperature full combustion of diesel oil, greatly reducing air pollution emissions and having a good environmental protection effect. Description of the Drawings

[0024] Figure 1 is the structural schematic diagram of the present invention;

[0025] Figure 2 is the assembly schematic diagram of the present invention;

[0026] Figure 3 is the structural schematic diagram of the burner cylinder of the present invention;

[0027] Figure 4 is Figure 3 the partial enlarged view of

[0028] Components and numbers in the figure:

[0029] 1 - furnace base; 11 - air supply pipe; 2 - burner cylinder; 21 - oil passage hole; 22 - annular oil chamber; 23 - oil inlet pipe; 24 - oil hole bolt; 25 - inner oil outlet hole; 26 - air inlet hole; 27 - atomization hole; 3 - annular fixing plate; 31 - handle; 4 - flame concentrating plate; 41 - flame concentrating hole. Specific embodiments

[0030] The following embodiments are used to illustrate a hot melt coating diesel heating stove of the present invention, which can realize the full mixing and combustion of diesel and air, with more sufficient combustion and higher combustion temperature, but are not used to limit the protection scope of the present invention.

[0031] As Figures 1 to 4 shown, a hot melt coating diesel heating stove includes a furnace base 1 with a closed bottom in a cylindrical shape. The side wall of the furnace base 1 is provided with an air supply pipe 11. A burner cylinder 2 is arranged inside the furnace base 1. The upper end of the burner cylinder 2 with a closed bottom is connected with an annular fixing plate 3. A vertical oil passage hole 21 is opened on the burner cylinder 2. The oil passage hole 21 is a blind hole extending to the bottom of the burner cylinder 2. The oil passage holes 21 are uniformly arranged in a ring along the burner cylinder 2. The top end of the oil passage hole 21 is threadedly connected with an oil hole bolt 24 for maintenance, and the bottom end is provided with an inner oil outlet hole 25 horizontally communicating with the inner side of the burner cylinder 2;

[0032] An annular oil chamber 22 communicating with all the oil passage holes 21 is arranged inside the annular fixing plate 3. An oil inlet pipe 23 communicating with the annular oil chamber 22 is arranged on the outer side of the annular fixing plate 3;

[0033] A horizontal air inlet hole 26 is opened on the barrel wall of the burner cylinder 2. The burner cylinder 2 is placed inside the furnace base 1 through the annular fixing plate 3. A gap is provided between the burner cylinder 2 and the furnace base 1 to form an air chamber. A flame concentrating plate 4 is also arranged above the burner cylinder 2.

[0034] Among them, as Figure 3As shown, the air inlet holes 26 on the barrel wall of the burner barrel 2 are arranged in diagonal rows. The air inlet holes 26 are arranged in an inclined and rowed manner. The intake air of the air supply pipe 11 enters the compressed air chamber formed by the distance between the burner barrel 2 and the furnace base 1. After accelerating through the air inlet holes 26, a high-speed air flow is formed. The diagonal row arrangement of the air inlet holes 26 enables the high-speed air flow to enter the burner barrel 2 to form a cyclone air flow. The high-speed rotation of the cyclone air flow enables the atomized diesel oil and air to be fully mixed and burned, and a relatively high combustion temperature can be quickly reached.

[0035] Preferably, the air inlet holes 26 on the barrel wall of the burner barrel 2 are arranged in diagonal rows at an angle of 45 degrees. The high-speed air flow enters the burner barrel 2 to form a faster and more stable cyclone air flow, which is conducive to the full mixing and combustion of diesel oil and air.

[0036] Preferably, the inner oil outlet holes 25 at the inner bottom of the burner barrel 2 are of the same height and are arranged in a circular pattern, so as to realize the uniform spraying of diesel oil at the inner bottom of the burner barrel 2. Through the cyclone air flow, high-efficiency cyclone combustion is formed, greatly improving the combustion efficiency.

[0037] Preferably, atomizing holes 27 are provided on the bottom barrel wall of the burner barrel 2. The atomizing holes 27 are of the same height as the inner oil outlet holes 25 and are arranged in a staggered pattern. The atomizing holes 27 at the same height uniformly atomize the diesel oil sprayed out of the inner oil outlet holes 25. The atomized diesel oil is uniformly mixed with air in the burner barrel 2, which can greatly improve the combustion efficiency and combustion temperature.

[0038] Preferably, the aperture of the inner oil outlet hole 25 is 3 mm, and the aperture of the atomizing hole 27 is 3 mm. The center distance between adjacent atomizing holes 27 and air inlet holes 26 is 11 mm, so as to realize an appropriate intake air volume and air pressure of atomizing air. The atomizing holes 27 can uniformly atomize the diesel oil sprayed out of the inner oil outlet holes 25. The aperture of the air inlet hole 26 is 4 mm, so as to realize an appropriate intake air volume and air pressure of combustion air in the burner barrel 2, form high-efficiency cyclone combustion and maintain an appropriate oxygen saturation degree, greatly improving the combustion efficiency and combustion temperature.

[0039] Preferably, the center of the inner oil outlet hole 25 is 10 mm away from the bottom surface of the burner barrel 2, so as to realize an appropriate oil intake, improve the combustion efficiency and combustion temperature. The inner oil outlet hole 25 is 10 mm away from the bottom surface of the burner barrel 2, which is conducive to diesel ignition and can avoid blockage of the inner oil outlet hole 25.

[0040] Preferably, the burner cylinder body 2 and the furnace base body 1 are concentrically arranged, and the gap between the two forms an air chamber. The gap between the two cylinder walls is 45 mm, and the bottom gap is 20 - 30 mm. The gap between the two forms a relatively closed compressed air chamber, forming uniform compressed air outside the burner cylinder body 2. The compressed air forms a strong cyclone airflow inside the burner cylinder body 2 through the obliquely arranged air inlet holes 26. At the same time, the diesel oil ejected from the inner oil outlet hole 25 is fully atomized through the atomization holes 27. After atomization, the diesel oil burns sufficiently in the cyclone airflow, and the combustion temperature can exceed 800 degrees. If the gap is too large or too small, it will cause excessive or insufficient compressed air in the air chamber, which has a great impact on the calorific value, directly reducing the atomization rate of the fuel oil, insufficient oxygen saturation during combustion, resulting in poor combustion efficiency of the burner cylinder body 2 and unable to reach a high combustion temperature.

[0041] Preferably, the fire concentrating plate 4 is provided with uniformly arranged fire concentrating holes 41, and two handles 31 are symmetrically arranged on the annular fixing plate 3. The uniformly arranged fire concentrating holes 41 make the combustion flames evenly distributed, avoiding too long flames, which is beneficial to evenly heating the hot melt coating in the container, and at the same time improving the combustion efficiency and combustion temperature. The handles 31 are used for the installation and disassembly of the burner cylinder body 2.

[0042] Preferably, the furnace base body 1, the burner cylinder body 2, and the fire concentrating plate 4 are made of Q235 steel. Q235 steel has a moderate carbon content and good comprehensive performance. Its strength, plasticity, welding and other processing properties are balanced, which is beneficial to the drilling, welding processing and manufacturing of the stove.

[0043] Implementation process: The air supply pipe 11 is connected to a blower, diesel oil is fed into the fuel inlet pipe 23, and the diesel oil flows into the burner cylinder body 2 through the inner oil outlet hole 25. After ignition, the blower starts. During the ignition and combustion process, the temperature of the burner cylinder body 2 itself is gradually heated, and at the same time, the diesel oil flowing through the annular oil cavity 22 and the oil passage hole 21 is heated, so that the temperature of the diesel oil exceeds 200 °C before entering the burner cylinder body 2 for combustion, making the diesel oil reach a relatively high ignition temperature before mixing with air.

[0044] The gap between the burner cylinder 2 and the furnace base 1 forms a relatively enclosed air chamber. The air entering from the air supply pipe 11 enters the air chamber and is pressurized and compressed. Uniform compressed air is formed outside the burner cylinder 2. The compressed air forms a strong cyclone airflow inside the burner cylinder 2 through the inclined air inlet holes 26. At the same time, the compressed air pressurizes and supplies air into the burner cylinder 2 from the bottom through the atomization holes 27 arranged staggeredly with the inner oil outlet holes 25, quickly and uniformly atomizing the diesel oil ejected from the inner oil outlet holes 25. The pre-heated diesel oil is fully atomized through the atomization holes 27. The atomized diesel oil burns fully in the cyclone airflow inside the burner cylinder 2. The high-speed airflow is accelerated through the air inlet holes 26 to form a strong and stable cyclone airflow inside the burner cylinder 2. The high-speed rotation of the cyclone airflow enables the atomized diesel oil to be fully mixed with the air for combustion, quickly reaching a relatively high combustion temperature, and the combustion temperature can exceed 800 °C.

[0045] The fire concentrating plate 4 is provided with uniformly arranged fire concentrating holes 41, making the distribution of the combustion flames uniform, avoiding overly long flames, facilitating the uniform heating of the hot-melt coating in the container, and at the same time improving the combustion efficiency and combustion temperature.

[0046] The heating furnace can generate a high temperature above 800 °C, quickly heating the hot-melt coating on-site, meeting the heating time and heating quantity requirements for the construction scribing of the hot-melt coating, and greatly improving the construction efficiency of the hot-melt coating.

[0047] In this specification, the present invention has been described with reference to its specific embodiments. However, it is obvious that various modifications can still be made without departing from the scope of the present invention. Therefore, the specification should be considered illustrative rather than restrictive.

Claims

1. A diesel heating stove for hot-melt coating, comprising a furnace base body (1) with a closed bottom in a cylindrical shape. An air supply pipe (11) is provided on the side wall of the furnace base body (1). Characterized in that, A combustion cylinder body (2) is arranged inside the furnace base body (1). An annular fixing plate (3) is connected to the upper end of the burner cylinder body (2) with a closed bottom. Vertical oil holes (21) are opened on the combustion cylinder body (2). The oil holes (21) are blind holes extending to the bottom of the burner cylinder body (2). The oil holes (21) are evenly arranged in a ring along the burner cylinder body (2). The top end of the oil hole (21) is threadedly connected with an oil hole bolt (24) for maintenance, and the bottom end is provided with an inner oil outlet hole (25) horizontally communicating with the inner side of the burner cylinder body (2). An annular oil chamber (22) communicating with all the oil holes (21) is arranged inside the annular fixing plate (3). An oil inlet pipe (23) communicating with the annular oil chamber (22) is arranged on the outer side part of the annular fixing plate (3). Horizontal air inlet holes (26) are opened on the wall of the burner cylinder body (2). The burner cylinder body (2) is placed inside the furnace base body (1) through the annular fixing plate (3). A gap is provided between the burner cylinder body (2) and the furnace base body (1) to form an air chamber. A fire concentrating plate (4) is further arranged above the burner cylinder body (2). The air inlet holes (26) on the wall of the burner cylinder body (2) are arranged in an inclined and divided row. Atomizing holes (27) are arranged on the bottom wall of the burner cylinder body (2). The atomizing holes (27) have the same height as the inner oil outlet holes (25) and are arranged in a staggered manner.

2. A diesel heating stove for hot-melt coating according to claim 1, Characterized in that, The air inlet holes (26) on the wall of the burner cylinder body (2) are arranged in an inclined row at 45 degrees.

3. A diesel heating stove for hot-melt coating according to claim 1, Characterized in that, The inner oil outlet holes (25) at the inner bottom of the burner cylinder body (2) have the same height and are arranged in a ring.

4. A diesel heating stove for hot-melt coating according to claim 1, Characterized in that, The aperture of the inner oil outlet hole (25) is 3 mm, the aperture of the atomizing hole (27) is 3 mm, the aperture of the air inlet hole (26) is 4 mm, and the center distance between adjacent atomizing holes (27) and air inlet holes (26) is 11 mm.

5. A diesel heating stove for hot-melt coating according to claim 4, Characterized in that, The center of the inner oil outlet hole (25) is 10 mm away from the bottom surface of the burner cylinder body (2).

6. A diesel heating stove for hot-melt coating according to claim 1, Characterized in that, The burner cylinder body (2) and the furnace base body (1) are concentrically arranged. The gap between the two forms an air chamber, and the gap between the two side walls is 45 mm, and the bottom gap is 20 - 30 mm.

7. A diesel heating stove for hot-melt coating according to claim 1, Characterized in that, The fire concentrating plate (4) is provided with evenly arranged fire concentrating holes (41). Two lifting handles (31) are symmetrically arranged on the annular fixing plate (3).

8. A diesel heating stove for hot-melt coating according to claim 1, It is characterized in that the furnace base body (1), the combustion cylinder body (2), and the fire concentrating plate (4) are made of Q235 steel material.

Images