Combustion furnace cover with preheating function

Abstract

The utility model relates to the technical field of combustion furnace covers, and discloses a combustion furnace cover with a preheating function, which comprises a furnace cover, and a purification device is arranged above the furnace cover. According to the combustion furnace cover with the preheating function, by arranging a heat exchange gas pipe, heat exchange fins, a connecting pipe and a gas outlet pipe, when a combustion furnace is used, waste gas is exhausted through the gas outlet pipe, gas in the heat exchange gas pipe is heated through heat in the waste gas, and the gas is guided into the top of the heat exchange gas pipe; low-pressure cold air of gas entering the combustion furnace is changed into high-pressure and high-temperature gas, and heat in waste gas is recycled, so that the utilization rate of energy is increased, and the combustion efficiency of comburent in the combustion furnace is improved; by arranging the purification box, the gas guide pipe, the L-shaped plate and the filter screen, waste gas in the combustion furnace is guided into the purification box and penetrates through the filter screen, dust in the waste gas is filtered out by the filter screen, the waste gas penetrates through the gas guide pipe and enters the purification liquid, harmful gas is absorbed and filtered by the purification liquid, and emission of the waste gas is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion furnace covers, in particular to a combustion furnace cover with a preheating function. Background Art

[0002] This furnace is most suitable for the combustion of steel samples. It can also burn other samples (such as hematite, ferrosilicon, ferromanganese, slag, coke, ore, coal, glass, rubber, etc.) with the addition of certain additives. This electric arc furnace is used in conjunction with a carbon-sulfur joint analyzer. Various analysis methods such as conductivity method, non-aqueous titration method, gas volume method, iodine titration method, acid-base titration method, etc. are used to quantitatively analyze the carbon and sulfur content of the sample. The fuel and air mix poorly, the combustion speed is slow, and the efficiency is not high.

[0003] However, there are still the following disadvantages: In the prior art, a fan is generally used to directly introduce air into the combustion furnace to assist the combustion of the combustion material, but the air temperature is relatively low, and the low temperature of the air will affect the combustion of the combustion material and the utilization of the flame heat energy. Therefore, we propose a combustion furnace cover with a preheating function to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to provide a combustion furnace cover with a preheating function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a combustion furnace cover with a preheating function, comprising a furnace cover, a purification device is arranged above the furnace cover, and the purification device comprises a heating part;

[0006] The heating part includes a heat exchange air pipe and an air outlet pipe, the top surface of the furnace cover is provided with an air outlet hole, the air outlet pipe is sleeved on the outer surface of the bottom end of the heat exchange air pipe, the top surface of the air outlet pipe is provided with a first bolt, the first thread on the outer surface of the bottom end of the first bolt penetrates the outer surface of the air outlet pipe and the top surface of the furnace cover and extends to the inside of the furnace cover, the air inlet pipe of the heat exchange air pipe is provided at the top, and the air outlet pipe of the heat exchange air pipe is provided on the right side;

[0007] A filter portion is provided above the furnace cover;

[0008] The filter unit includes a purification box, an air guide pipe and an L-shaped plate. The outer surface of the right end of the air guide pipe is fixedly penetrated through the inner wall of the L-shaped plate and is connected with the right side of the L-shaped plate.

[0009] A further improvement is that the heating part also includes heat exchange fins and connecting pipes, and a second bolt is arranged above the heat exchange air pipe. The outer surface of the bottom end of the second bolt is threadedly penetrated through the top surface of the heat exchange air pipe and the air outlet pipe in sequence and extends to the inside of the air outlet pipe. By setting up the heat exchange air pipe, the heat in the combustion exhaust gas is used to heat the gas introduced into the combustion furnace, thereby improving the utilization rate of energy.

[0010] A further improvement is that the bottom end of the heat exchange air pipe extends to the inside of the air outlet hole on the furnace cover, the heat exchange fins are fixedly sleeved on the outer surface of the bottom end of the heat exchange air pipe, the right end face of the connecting pipe is fixedly connected with the left end face of the air outlet pipe, and the left end face of the connecting pipe is fixedly connected with the right end face of the purification box. By arranging the heat exchange fins, the heat exchange efficiency is improved.

[0011] A further improvement is that the filter part also includes a drawer, a magnetic plate, a connecting plate, a filter, a sliding rod and a brush, the inner wall of the purification box is fixedly connected to the inner wall of the L-shaped plate, and a purification liquid is provided on the inner side of the L-shaped plate. By setting up a purification box, an L-shaped plate and a connecting pipe, the purification liquid on the inner side of the L-shaped plate is used to absorb harmful gases in the exhaust gas.

[0012] A further improvement is that the outer surface of the filter is fixedly connected to the inner wall of the air duct, the right end face of the filter is flush with the right end face of the L-shaped plate, and the filter is used to filter impurities in the exhaust gas.

[0013] A further improvement is that the outer surface of the right end of the drawer slides through the left end surface of the purification box and extends into the interior of the purification box, the right end surface of the magnetic plate is fixedly connected to the left end surface of the drawer, and the right end surface of the magnetic plate and the left end surface of the purification box attract each other. By setting up the magnetic plate and the drawer, the right end surface of the magnetic plate and the left end surface of the purification box attract each other, and the drawer is positioned to facilitate dust collection.

[0014] A further improvement is that the top surface of the brush is fixedly connected to the bottom surface of the sliding rod, the outer surface of the top end of the sliding rod slides through the inner wall of the purification box and extends to the top of the purification box, the top surface of the sliding rod is fixedly connected to the bottom surface of the connecting plate, and by setting a connecting plate, a sliding rod and a brush, the connecting plate is pushed and pulled up and down, driving the sliding rod and the brush to move up and down, so that the brush cleans the right end surface of the filter, and the dust on the filter falls into the inside of the drawer.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the furnace cover of the combustion furnace with preheating function is provided with a heat exchange air pipe, a heat exchange fin, a connecting pipe and an air outlet pipe. When the combustion furnace is in use, the exhaust gas is discharged through the air outlet pipe, and the heat in the exhaust gas heats the gas inside the heat exchange air pipe. The gas is introduced into the top of the heat exchange air pipe, and the air outlet pipe of the heat exchange air pipe is connected with the air inlet pipe of the combustion furnace, so that the gas entering the combustion furnace is changed from low-pressure cold air to high-pressure and high-temperature gas. By reusing the heat in the exhaust gas, the utilization rate of energy is improved, and the combustion of the materials inside the combustion furnace is improved. The combustion efficiency is improved; by setting a purification box, an air duct, an L-shaped plate and a filter, the exhaust gas inside the combustion furnace is introduced into the purification box, the exhaust gas passes through the filter, the dust in the waste is filtered out by the filter, the exhaust gas passes through the air duct and enters the purification liquid, the harmful gas is absorbed and filtered by the purification liquid, and the emission of exhaust gas is reduced; by setting a drawer, a magnetic plate, a connecting plate, a sliding rod and a brush, the connecting plate is pulled and pulled to drive the sliding rod and the brush to move up and down, so that the brush cleans and scrapes the right end surface of the filter, so that the dust falls into the drawer, and the magnetic plate is pulled to the left to pull the drawer out to clean the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a sectional view of the three-dimensional structure of the utility model;

[0018] Figure 3 for Figure 2 A magnified view of the structure at center;

[0019] Figure 4 for Figure 2 A magnified view of the structure at B in the middle;

[0020] Figure 5 for Figure 2 Enlarged view of the structure at point C in the middle.

[0021] In the figure: 1 furnace cover, 3 purification device, 31 filtering part, 32 heating part, 311 purification box, 312 air guide pipe, 313 L-type plate, 314 drawer, 315 magnetic plate, 316 connecting plate, 317 filter screen, 318 sliding rod, 319 brush, 321 heat exchange air pipe, 322 heat exchange fin, 323 connecting pipe, 324 air outlet pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5 , the utility model provides a technical solution: a combustion furnace cover with a preheating function, comprising a furnace cover 1, a purification device 3 is arranged above the furnace cover 1, and the purification device 3 includes a heating part 32;

[0024] The heating part 32 includes a heat exchange air pipe 321 and an air outlet pipe 324. An air outlet hole is opened on the top surface of the furnace cover 1. The air outlet pipe 324 is sleeved on the outer surface of the bottom end of the heat exchange air pipe 321. A first bolt is arranged on the top surface of the air outlet pipe 324. The first thread on the outer surface of the bottom end of the first bolt penetrates the outer surface of the air outlet pipe 324 and the top surface of the furnace cover 1 and extends to the inside of the furnace cover 1. The air inlet pipe of the heat exchange air pipe 321 is arranged on the top, and the air outlet pipe of the heat exchange air pipe 321 is arranged on the right side. The heating part 32 also includes heat exchange fins 322 and a connecting pipe 323.

[0025] A second bolt is arranged above the heat exchange air pipe 321, and the outer surface of the bottom end of the second bolt is threadedly penetrated through the top surface of the heat exchange air pipe 321 and the air outlet pipe 324 in sequence and extends to the inside of the air outlet pipe 324, and the bottom end of the heat exchange air pipe 321 extends to the inside of the air outlet hole on the furnace cover 1, and the heat exchange fin 322 is fixedly sleeved on the outer surface of the bottom end of the heat exchange air pipe 321;

[0026] The right end face of the connecting pipe 323 is fixedly connected with the left end face of the outlet pipe 324, and the left end face of the connecting pipe 323 is fixedly connected with the right end face of the purification box 311. By setting the heat exchange air pipe 321, the heat exchange fins 322, the connecting pipe 323 and the outlet pipe 324, when the combustion furnace is in use, the exhaust gas is discharged through the outlet pipe 324, and the heat in the exhaust gas heats the gas inside the heat exchange air pipe 321. The gas is introduced into the top of the heat exchange air pipe 321, and the outlet pipe of the heat exchange air pipe 321 is connected to the inlet pipe of the combustion furnace, so that the gas entering the combustion furnace is changed from low-pressure cold air to high-pressure and high-temperature gas. By reusing the heat in the exhaust gas, the utilization rate of energy is improved, and the combustion efficiency of the combustion materials inside the combustion furnace is improved;

[0027] A filter part 31 is provided above the furnace cover 1;

[0028] The filter unit 31 includes a purification box 311, an air guide tube 312 and an L-shaped plate 313. The outer surface of the right end of the air guide tube 312 is fixedly passed through the inner wall of the L-shaped plate 313 and is connected to the right side of the L-shaped plate 313. The filter unit 31 also includes a drawer 314, a magnetic plate 315, a connecting plate 316, a filter screen 317, a sliding rod 318 and a brush 319.

[0029] The inner wall of the purification box 311 is fixedly connected to the inner wall of the L-shaped plate 313, and the inner side of the L-shaped plate 313 is provided with purification liquid. The outer surface of the filter screen 317 is fixedly connected to the inner wall of the air duct 312, and the right end surface of the filter screen 317 is flush with the right end surface of the L-shaped plate 313. The outer surface of the right end of the drawer 314 slides through the left end surface of the purification box 311 and extends to the inside of the purification box 311.

[0030] The right end surface of the magnetic plate 315 is fixedly connected to the left end surface of the drawer 314, and the right end surface of the magnetic plate 315 and the left end surface of the purification box 311 attract each other. By setting the purification box 311, the air guide pipe 312, the L-shaped plate 313 and the filter 317, the exhaust gas inside the combustion furnace is introduced into the purification box 311, the exhaust gas passes through the filter 317, the dust in the waste is filtered out by the filter 317, the exhaust gas passes through the air guide pipe 312, and enters the purification liquid, the harmful gas is absorbed and filtered by the purification liquid, and the emission of exhaust gas is reduced;

[0031] The top surface of the brush 319 is fixedly connected to the bottom surface of the slide bar 318, and the outer surface of the top end of the slide bar 318 slides through the inner wall of the purification box 311 and extends to the top of the purification box 311. The top surface of the slide bar 318 is fixedly connected to the bottom surface of the connecting plate 316. By arranging the drawer 314, the magnetic plate 315, the connecting plate 316, the slide bar 318 and the brush 319, the connecting plate 316 is pulled and pulled to drive the slide bar 318 and the brush 319 to move up and down, so that the brush 319 cleans and scrapes the right end surface of the filter 317, so that dust falls into the inside of the drawer 314, and the magnetic plate 315 is pulled to the left to pull the drawer 314 out to clean the dust.

[0032] When in use, gas is introduced into the top of the heat exchange air pipe 321, and the air outlet pipe of the heat exchange air pipe 321 is connected to the air inlet pipe of the combustion furnace. When the gas inside the combustion furnace flows through the outer surface of the heat exchange air pipe 321, the heat in the exhaust gas heats the gas inside the heat exchange air pipe 321, and the exhaust gas passes through the connecting pipe 323 and enters the purification box 311. After the exhaust gas passes through the filter 317, it is introduced into the purification liquid on the inner side of the L-shaped plate 313 by the air guide pipe 312, and the connecting plate 316 is pushed and pulled up and down. The connecting plate 316 drives the sliding rod 318 to move up and down, and the sliding rod 318 drives the brush 319 to move up and down, so that the brush 319 scrapes the right end surface of the filter 317 to make the dust fall into the drawer 314.

[0033] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combustion furnace cover with a preheating function, comprising a furnace cover (1), characterized in that: A purification device (3) is arranged above the furnace cover (1), and the purification device (3) comprises a heating part (32); The heating part (32) comprises a heat exchange air pipe (321) and an air outlet pipe (324); an air outlet hole is opened on the top surface of the furnace cover (1); the air outlet pipe (324) is sleeved on the outer surface of the bottom end of the heat exchange air pipe (321); a first bolt is arranged on the top surface of the air outlet pipe (324); a first thread on the outer surface of the bottom end of the first bolt penetrates the outer surface of the air outlet pipe (324) and the top surface of the furnace cover (1) and extends to the inside of the furnace cover (1); the air inlet pipe of the heat exchange air pipe (321) is arranged on the top, and the air outlet pipe of the heat exchange air pipe (321) is arranged on the right side; A filter portion (31) is provided above the furnace cover (1); The filter unit (31) comprises a purification box (311), an air guide tube (312) and an L-shaped plate (313); the outer surface of the right end of the air guide tube (312) is fixedly passed through the inner wall of the L-shaped plate (313) and is arranged to be in communication with the right side of the L-shaped plate (313).

2. The combustion furnace cover with preheating function according to claim 1, characterized in that: The heating portion (32) further comprises a heat exchange fin (322) and a connecting pipe (323); a second bolt is arranged above the heat exchange air pipe (321); an outer surface of the bottom end of the second bolt is threadedly threadedly penetrates the top surface of the heat exchange air pipe (321) and the air outlet pipe (324) in sequence and extends to the interior of the air outlet pipe (324).

3. The combustion furnace cover with preheating function according to claim 2, characterized in that: The bottom end of the heat exchange air pipe (321) extends to the inside of the air outlet hole on the furnace cover (1); the heat exchange fin (322) is fixedly sleeved on the outer surface of the bottom end of the heat exchange air pipe (321); the right end face of the connecting pipe (323) is fixedly connected to the left end face of the air outlet pipe (324); and the left end face of the connecting pipe (323) is fixedly connected to the right end face of the purification box (311).

4. The combustion furnace cover with preheating function according to claim 1, characterized in that: The filtering part (31) further comprises a drawer (314), a magnetic plate (315), a connecting plate (316), a filter screen (317), a sliding rod (318) and a brush (319); the inner wall of the purification box (311) is fixedly connected to the inner wall of the L-shaped plate (313); and a purification liquid is arranged on the inner side of the L-shaped plate (313).

5. The combustion furnace cover with preheating function according to claim 4, characterized in that: The outer surface of the filter screen (317) is fixedly connected to the inner wall of the air guide pipe (312), and the right end surface of the filter screen (317) is flush with the right end surface of the L-shaped plate (313).

6. The combustion furnace cover with preheating function according to claim 4, characterized in that: The outer surface of the right end of the drawer (314) slides through the left end surface of the purification box (311) and extends into the interior of the purification box (311), and the right end surface of the magnetic plate (315) is fixedly connected to the left end surface of the drawer (314), and the right end surface of the magnetic plate (315) and the left end surface of the purification box (311) attract each other.

7. The combustion furnace cover with preheating function according to claim 4, characterized in that: The top surface of the brush (319) is fixedly connected to the bottom surface of the slide rod (318); the outer surface of the top end of the slide rod (318) slides through the inner wall of the purification box (311) and extends to the top of the purification box (311); the top surface of the slide rod (318) is fixedly connected to the bottom surface of the connecting plate (316).

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