Hot blast stove

Abstract

The utility model discloses a hot blast stove which comprises a hot blast stove body, a hearth is arranged in the middle of the interior of the hot blast stove body, an upper fixed heat transfer pipe and a lower fixed heat transfer pipe are arranged on the upper portion and the lower portion of the inner wall of the hearth respectively, and an oxygen conveying pipe is arranged on one side of the upper fixed heat transfer pipe. A smoke outlet pipe is arranged in the middle of the rear end of the interior of the hearth, heat conducting fins are arranged outside the hearth, a supporting plate is arranged at the bottom of the hearth, an ash bin is arranged below the supporting plate, and an access cover is arranged at the top of the hot blast stove body. The upper fixed heat transfer pipe and the lower fixed heat transfer pipe are arranged at the upper position and the lower position in the hearth respectively, the two ends of each fixed heat transfer pipe are of the opening structures, the internal heat conduction speed can be increased through the structures, heat in the hearth is guided out towards the two sides in different directions through the upper fixed heat transfer pipe and the lower fixed heat transfer pipe, and the heat conduction efficiency is improved. Therefore, heat conveying time is shortened, and working efficiency of the hot-blast stove is improved.

Description

Technical Field

[0001] This utility model relates to the field of hot blast stoves, specifically a hot blast stove. Background Technology

[0002] Hot blast stoves have become a replacement for electric heat sources and traditional steam power sources in many industries. There are many types and series of hot blast stoves. They are classified into manual and machine-fired types according to the coal feeding method, coal, oil and gas stoves according to the fuel type, high temperature stoves and medium temperature stoves according to the output air temperature, indirect and direct types according to the conveying method, and combined and separate types according to the heat exchanger arrangement. Large stoves are equipped with coal pulverizers.

[0003] Existing technologies still have certain shortcomings in the use of hot blast stoves. The internal structure of traditional hot blast stoves is relatively complex, which increases the maintenance workload for maintenance workers. In addition, the inner wall of the furnace is relatively thick, which increases the heat transfer time and the heat conduction speed is slow. Utility Model Content

[0004] The purpose of this utility model is to provide a hot air furnace to solve the problems mentioned in the background art, such as the complex internal structure of traditional hot air furnaces, which increases the maintenance workload of maintenance workers, and the thick inner wall of the furnace, which increases the heat transfer time and slows down the heat conduction speed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hot air furnace, comprising a hot air furnace body, a furnace chamber located in the middle of the interior of the hot air furnace body, an upper fixed heat transfer pipe and a lower fixed heat transfer pipe respectively located on the upper and lower sides of the inner wall of the furnace chamber, an oxygen delivery pipe located on one side of the upper fixed heat transfer pipe, a smoke outlet pipe located in the middle of the rear end of the interior of the furnace chamber, heat-conducting fins located on the exterior of the furnace chamber, a support plate located at the bottom of the furnace chamber, an ash hopper located below the support plate, a maintenance cover located at the top of the hot air furnace body, a first hot air outlet and a second hot air outlet located on both sides of the rear end of the top of the hot air furnace body, a furnace opening located in the middle of the front end of the hot air furnace body, a furnace cover located inside the furnace opening, a base located at the bottom of the hot air furnace body, a caster wheel located in the middle of the lower part of the base, a fan located in the middle of one side of the hot air furnace body, and an oxygen inlet located above the other side of the hot air furnace body.

[0006] In a further embodiment, both ends of the upper fixed heat transfer tube and the lower fixed heat transfer tube are designed to be open, and both the upper fixed heat transfer tube and the lower fixed heat transfer tube are connected to the furnace by welding.

[0007] In a further embodiment, the surface of the oxygen delivery pipe is provided with a plurality of oxygen outlet holes, and one end of the oxygen delivery pipe is connected to the oxygen inlet by welding.

[0008] In a further embodiment, the furnace opening and the furnace chamber are fixedly connected by a connecting pipe, and the cross-section of the connecting pipe is set to a square structure.

[0009] In a further embodiment, a handle is provided on one side of the front end of the furnace cover, and the handle is U-shaped.

[0010] In a further embodiment, the oxygen inlet is provided with a sealing plug inside, and the sealing plug is fixedly connected to the oxygen inlet by threads.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. In this utility model, an upper fixed heat transfer pipe and a lower fixed heat transfer pipe are respectively installed at the upper and lower positions inside the furnace. The two ends of the fixed heat transfer pipe are designed as open structures. This structure can improve the internal heat conduction speed. The heat in the furnace is discharged to both sides in different directions by the upper and lower fixed heat transfer pipes, thereby accelerating the heat transfer time and improving the working efficiency of the hot blast stove. Oxygen delivery pipes are provided on both sides of the upper fixed heat transfer pipe. The oxygen delivery pipes can increase the uniformity of oxygen delivery in the furnace, so that the fuel inside can be fully burned and save fuel. The internal structure of the hot blast stove is relatively simple. An inspection cover is provided on the top of the hot blast stove. The inspection cover makes it easier for maintenance workers to carry out internal maintenance operations and reduces the maintenance workload. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal structure of a hot air furnace according to the present invention;

[0014] Figure 2 This is a side view of the furnace chamber of this utility model;

[0015] Figure 3 This is a schematic diagram of the bottom structure of the furnace chamber of this utility model;

[0016] Figure 4 This is a side view of the oxygen delivery pipe of this utility model;

[0017] Figure 5 This is a front view of a hot air furnace according to the present invention;

[0018] Figure 6 This is a right-side view of a hot air furnace according to the present invention;

[0019] Figure 7 This is a left-side view of a hot air furnace according to the present invention.

[0020] In the diagram: 1. Hot air furnace body; 2. Inspection cover; 3. Furnace opening; 4. Furnace cover; 5. Handle; 6. Connecting pipe; 7. Ash hopper; 8. Base; 9. Casters; 10. Furnace chamber; 11. Oxygen delivery pipe; 12. Upper fixed heat transfer pipe; 13. Smoke outlet pipe; 14. Heat-conducting fins; 15. First hot air outlet; 16. Lower fixed heat transfer pipe; 17. Oxygen outlet; 18. Oxygen inlet; 19. Sealing plug; 20. Second hot air outlet; 21. Fan; 22. Support plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-7 This utility model provides an embodiment of a hot air furnace, comprising a hot air furnace body 1, a furnace chamber 10 located in the middle of the interior of the hot air furnace body 1, an upper fixed heat transfer pipe 12 and a lower fixed heat transfer pipe 16 respectively located on the upper and lower sides of the inner wall of the furnace chamber 10, an oxygen delivery pipe 11 located on one side of the upper fixed heat transfer pipe 12, a smoke outlet pipe 13 located in the middle of the rear end of the interior of the furnace chamber 10, heat-conducting plates 14 located on the exterior of the furnace chamber 10, a support plate 22 located at the bottom of the furnace chamber 10, an ash hopper 7 located below the support plate 22, an inspection cover 2 located at the top of the hot air furnace body 1, a first hot air outlet 15 and a second hot air outlet 20 located on both sides of the rear end of the top of the hot air furnace body 1, a furnace opening 3 located in the middle of the front end of the hot air furnace body 1, a furnace cover 4 located inside the furnace opening 3, a base 8 located at the bottom of the hot air furnace body 1, and a middle section below the base 8. A caster wheel 9 is provided at the intermediate position. A fan 21 is provided at the middle position of one side of the hot air furnace body 1. An oxygen inlet 18 is provided at the top of the other side of the hot air furnace body 1. Fuel is filled through the furnace chamber 10. The upper fixed heat transfer pipe 12 and the lower fixed heat transfer pipe 16 are used to transport the heat in the furnace chamber 10 from the upper and lower positions to both sides respectively. Oxygen is transported into the furnace chamber 10 through the oxygen delivery pipe 11. The flue gas generated by the fuel is discharged through the flue pipe 13. The heat conduction plate 14 is used to accelerate the heat export speed. The support plate 22 is used to increase the firmness of the furnace chamber 10 installation. The furnace cover 4 is used to open or close the furnace opening 3. The base 8 is used to increase the stability of the bottom of the hot air furnace body 1. The fan 21 is used to increase the internal airflow so that the heat is discharged from the first hot air outlet 15 and the second hot air outlet 20.

[0023] Both ends of the upper fixed heat transfer tube 12 and the lower fixed heat transfer tube 16 are designed with open structures, and the upper fixed heat transfer tube 12 and the lower fixed heat transfer tube 16 are connected to the furnace 10 by welding. The open structures of the upper fixed heat transfer tube 12 and the lower fixed heat transfer tube 16 facilitate the discharge of heat.

[0024] The surface of the oxygen delivery pipe 11 is provided with multiple oxygen outlet holes 17, and one end of the oxygen delivery pipe 11 is connected to the oxygen inlet 18 by welding. The oxygen outlet holes 17 facilitate the addition of oxygen into the furnace 10. The oxygen inlet 18 is provided with a sealing plug 19 inside, and the sealing plug 19 is fixedly connected to the oxygen inlet 18 by threads. The sealing plug 19 is used to open or seal the oxygen inlet 18.

[0025] The furnace opening 3 and the furnace chamber 10 are fixedly connected by a connecting pipe 6, and the cross-section of the connecting pipe 6 is set as a square structure. The connecting pipe 6 is used to connect the furnace opening 3 and the furnace chamber 10 into one piece, which is more secure. A handle 5 is provided on one side of the front end of the furnace cover 4, and the handle 5 is set as a U-shaped structure. The U-shaped handle 5 is easier to hold and operate.

[0026] Working principle: When in use, the ignited fuel is filled into the furnace chamber 10 through the furnace opening 3, the furnace cover 4 is closed, and the heat generated by combustion is conducted from both ends to the inner wall of the hot air furnace body 1 through the upper fixed heat transfer pipe 12 and the lower fixed heat transfer pipe 16. The heat conduction plate 14 accelerates the heat conduction speed, and the blower 21 accelerates the internal airflow. The heat is discharged from the first hot air outlet 15 and the second hot air outlet 20 to heat the oil in the waste oil-containing iron drum and waste oil-containing filter element. If the internal fuel combustion is not good, the sealing plug 19 is removed, the oxygen inlet 18 is opened, and the external oxygen enters the oxygen delivery pipe 11 through the oxygen inlet 18 and is delivered to the furnace chamber 10 through the oxygen outlet 17 to ensure that the fuel is fully combusted.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A hot blast stove comprising a hot blast stove body (1), characterized in that: The middle position of the inside of the hot blast furnace body (1) is provided with a hearth (10), the inner wall of the hearth (10) is provided with an upper fixed heat transfer pipe (12) and a lower fixed heat transfer pipe (16) at the upper and lower positions respectively, one side of the upper fixed heat transfer pipe (12) is provided with an oxygen delivery pipe (11), the middle position of the rear end of the inside of the hearth (10) is provided with a smoke outlet pipe (13), the outside of the hearth (10) is provided with a heat conducting sheet (14), the bottom of the hearth (10) is provided with a support plate (22), the lower side of the support plate (22) is provided with an ash bin (7), the top of the hot blast furnace body (1) is provided with an inspection cover (2), the top of the hot blast furnace body (1) is provided with a first hot air outlet (15) and a second hot air outlet (20) on the two sides of the rear end respectively, the middle position of the front end of the hot blast furnace body (1) is provided with a furnace mouth (3), the inside of the furnace mouth (3) is provided with a furnace cover (4), the bottom of the hot blast furnace body (1) is provided with a base (8), the middle position of the lower side of the base (8) is provided with a universal wheel (9), the middle position of one side of the hot blast furnace body (1) is provided with a fan (21), the upper side of the other side of the hot blast furnace body (1) is provided with an oxygen inlet (18).

2. A hot blast stove according to claim 1, characterized in that: Both ends of the upper fixed heat transfer pipe (12) and the lower fixed heat transfer pipe (16) are provided with an open structure, and the upper fixed heat transfer pipe (12) and the lower fixed heat transfer pipe (16) are connected with the hearth (10) by welding.

3. A hot blast stove as claimed in claim 1, wherein: The surface of the oxygen delivery pipe (11) is provided with a plurality of oxygen outlet holes (17), and one end of the oxygen delivery pipe (11) is connected with the oxygen inlet (18) by welding.

4. A hot blast stove as claimed in claim 1, wherein: The furnace mouth (3) is fixedly connected with the hearth (10) through a connecting pipe (6), and the cross section of the connecting pipe (6) is provided with a square structure.

5. A hot blast stove as claimed in claim 1, wherein: The front end of one side of the furnace cover (4) is provided with a handle (5), and the handle (5) is provided with a U-shaped structure.

6. A hot blast stove as claimed in claim 1, wherein: The inside of the oxygen inlet (18) is provided with a sealing plug (19), and the sealing plug (19) is fixedly connected with the oxygen inlet (18) by threads.

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