Combustion device of glass kiln

Abstract

The invention discloses a combustion device of a glass kiln, which comprises a combustion gun, the combustion gun comprises an outer cylinder and a gun barrel, and the gun barrel is detachably connected with the outer cylinder; a fuel gas inlet pipe is arranged on the rear side of the outer cylinder, an air inlet pipe is arranged on the lower side of the outer cylinder, and a mixing mechanism is further arranged in the outer cylinder and communicated with the air inlet pipe and the fuel gas inlet pipe. According to the burning gun, the outer barrel and the gun barrel which are split are arranged, when the burning gun is used, the gun barrel part is damaged firstly, only the gun barrel part needs to be replaced at the moment, replacement of the whole burning gun is avoided, and the use loss of the burning gun is reduced; and through the mixing mechanism, fuel gas and air are fully mixed in the outer barrel, combustion is more sufficient, after mixing is sufficient, the risk of flameout in the adjustment process is reduced, and adjustment of the combustion gun is facilitated.

Description

Technical Field

[0001] The invention relates to a combustion device, in particular to a combustion device on a glass furnace. Background Art

[0002] As a melting device that must be used in the glass manufacturing industry, a glass kiln is usually equipped with multiple burners on the side walls of the glass kiln. The flames emitted by the burners are used to heat the inside of the glass kiln, thereby realizing functions such as glass liquid transfer, homogenization, and preforming in the glass kiln. In the prior art, the burners simultaneously spray gas and oxygen, which are mixed and burned. However, since the gas is not fully burned, a large amount of carbon deposits are generated at the muzzle of the burner, which affects the normal operation of the burner, resulting in poor glass processing quality, increased on-site workload, and high operating costs. At the same time, since the gun head of the existing spray gun is easily damaged, the burner needs to be replaced frequently, which increases the cost of use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a combustion device for a glass kiln to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the present invention to solve its technical problem is: a combustion device for a glass kiln, including a burner gun, the burner gun includes an outer tube and a gun barrel, and the gun barrel is detachably connected to the outer tube; a gas inlet pipe is provided on the rear side of the outer tube, an air inlet pipe is provided on the lower side of the outer tube, and a mixing mechanism is also provided in the outer tube, and the mixing mechanism is connected to the air inlet pipe and the gas inlet pipe.

[0005] The beneficial effects of the present invention are as follows: the present invention provides a split outer cylinder and a gun barrel. When in use, the gun barrel portion is often damaged first. In this case, only the gun barrel portion needs to be replaced, thus avoiding replacement of the entire burner and reducing the use loss of the burner. Moreover, through the mixing mechanism, the gas and air are fully mixed in the outer cylinder, and the combustion is more complete. After the mixing is complete, the risk of flameout during adjustment is reduced, and the adjustment of the burner is convenient.

[0006] As a further improvement of the above technical solution, the mixing mechanism includes a core tube, the core tube is sleeved on the outer periphery of the gas inlet pipe, and the outer periphery of the core tube is provided with air holes. By arranging the core tube on the outer periphery of the gas inlet pipe, after the gas comes out, it first passes through the air holes of the core tube and enters the mixing chamber, so that the distribution of the gas is more uniform.

[0007] As a further improvement of the above technical solution, there are multiple air holes, and the arrangement density of the air holes near the rear side of the core tube is greater than the arrangement density of the air holes near the front side of the core tube. The outlet of the gas inlet pipe is roughly located in the middle of the core tube. By setting the arrangement of the air holes of the core tube, the gas can be distributed more evenly in the mixing chamber.

[0008] As a further improvement of the above technical solution, the mixing mechanism further includes an outer tube, the outer tube is sleeved on the outer side of the core tube, the length of the outer tube is greater than the length of the core tube, the rear side of the outer tube is provided with a first air inlet hole, the front side of the outer tube is provided with a second air inlet hole, the first air inlet hole is close to the core tube, and the aperture of the second air inlet hole is greater than the aperture of the first air inlet hole. Through the outer tube, the air enters the mixing chamber more evenly.

[0009] As a further improvement of the above technical solution, the second air inlet hole is relatively inclined, and an air guide tube is sleeved on the second air inlet hole.

[0010] As a further improvement of the above technical solution, a gas separation mechanism is provided on the outlet of the gas inlet pipe, and the gas separation mechanism includes a cone head, and the outer diameter of the front end of the cone head is larger than the outer diameter of the rear end.

[0011] As a further improvement of the above technical solution, the gas distribution mechanism also includes an air guide plate, and there are multiple air guide plates, and the multiple air guide plates are evenly distributed on the periphery of the outlet of the fuel gas intake pipe.

[0012] As a further improvement of the above technical solution, the front end of the gun barrel is provided with an elbow, through which the combustion position of the kiln can be adjusted.

[0013] As a further improvement of the above technical solution, a flange is provided at the front end of the outer tube, a connecting plate is provided at the rear side of the gun barrel, a plurality of through holes distributed at equal intervals are provided on the connecting plate and the flange, and the flange and the connecting plate are connected by bolts.

[0014] As a further improvement of the above technical solution, it also includes an air supply mechanism, the air supply mechanism includes an air outlet pipe and an air volume adjustment unit, the air outlet pipe is connected to the air inlet pipe. The air volume adjustment unit can be used to conveniently adjust the burner gun to meet the temperature control requirements of the kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0016] Figure 1 is an overall schematic diagram of the combustion device of the present invention; Figure 2 It is a three-dimensional schematic diagram of the burning gun of the present invention; Figure 3 It is a cross-sectional view of a burner of the present invention; Figure 4 It is an exploded view of the burner of the present invention.

[0017] Reference numerals: Burning gun 10, gun body 100, mixing chamber 101, gas inlet pipe 102, air inlet pipe 103, outer tube 110, rear part 111, front part 112, flange 113, gun barrel 120, connecting plate 121, elbow 122, mixing mechanism 200, core tube 300, air vent 310, outer tube 400, first air inlet hole 410, second air inlet hole 420, air guide tube 430, gas distribution mechanism 500, cone head 510, air guide sheet 520, air supply mechanism 20 DETAILED DESCRIPTION The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. The preferred embodiments of the present invention are shown in the drawings. The purpose of the drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0019] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0020] In the description of the present invention, unless otherwise clearly defined, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and the technical personnel in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution. At the same time, the various technical features in the invention can be combined interchangeably without conflicting with each other.

[0021] At present, the combustion medium used by glass manufacturing enterprises to melt glass generally adopts heavy oil, coal tar, water-coal slurry, coal gas, natural gas, etc. Due to the high calorific value of heavy oil combustion, most glass enterprises use heavy oil as the main fuel for melting glass. However, in recent years, with the continuous rise in international oil prices and the serious pollution caused by the combustion of heavy oil, enterprises have switched to burning relatively cheap coal tar. However, the output of coal tar has dropped sharply, the price has also been rising, and it has also caused certain environmental pollution. With the continuous rise in fuel prices, the cost of glass production lines has continued to rise, forcing industrial and mining enterprises to develop a new fuel or diversified fuel to replace traditional fuels. For this reason, those skilled in the art have found that using natural gas and petroleum coke powder as a mixed combustion medium can meet the production process requirements for melting glass liquid, can be used as an emerging energy to replace traditional energy, and natural gas is a clean primary energy source, which can also play an environmental protection role.

[0022] However, the existing natural gas burners in glass furnaces have simple structures and single combustion media. Natural gas cannot be completely burned during the combustion process, the burner has a short service life, and the burner is often burned out. At the same time, since replacing the burner is a high-temperature operation, frequent replacement brings great safety hazards to production personnel. To this end, the present invention provides an improved combustion device, which facilitates the replacement of the burner by making the gun head part detachable and independent, and optimizes the mixing of natural gas and air in the burner, so that the natural gas can be mixed with the air more evenly during combustion, thereby making the combustion more complete and thorough.

[0023] Specifically, refer to Figure 1 to Figure 4The combustion device of the glass kiln mainly includes a burning gun 10 and an air supply mechanism 20. The burning gun 10 includes a gun body 100, and the gun body includes an outer tube 110 and a gun barrel 120. The rear part 111 of the outer tube 110 is cylindrical, and the front part 112 of the outer tube 110 is conical. The outer diameter of the front part 112 is small at the front and large at the back. The rear part 111 encloses a mixing chamber 101; the gun barrel 120 is a straight tube, and the gun barrel 120 is connected to the front part by bolts. In order to make the connection between the gun barrel 120 and the outer tube 110 more reliable, a flange 113 is provided at the front end of the outer tube 110, and a connecting plate 121 is provided at the rear side of the gun barrel 120. The connecting plate 121 and the flange 113 are both provided with a number of through holes distributed at equal intervals, and the flange 113 and the connecting plate 121 are connected by bolts. The flange 113 can be fixed to the front part 112 of the outer cylinder 110 by welding, and similarly, the connecting plate 121 can also be fixed to the rear end of the gun barrel 120 by welding. Then the connecting plate 121 and the flange 113 are fixed together by bolts. Compared with the prior art, the gun body 100 is usually made into one body. The present invention splits the gun body 100 into the outer cylinder 110 and the gun barrel 120. When in use, the length of the gun barrel 120 is lengthened, so that the gun barrel 120 can be deeply inserted into the kiln, and the outer cylinder 110 is located outside the kiln as a whole. Since the use environment of the outer cylinder 110 is better than that of the gun barrel 120, the service life of the outer cylinder will be longer. When the gun barrel 120 is damaged, it is only necessary to remove the gun barrel 120 from the flange 113 and then replace it with a new one. Since the diameter of the gun barrel 120 is relatively small and the manufacture is simple, the cost of replacement is very low. At the same time, the gun barrel 120 and the outer cylinder 110 are connected by the flange, which is convenient for replacement.

[0024] In addition, as a further preferred embodiment, a high temperature resistant sealing gasket is provided between the flange 113 and the connecting plate 121 , and the sealing gasket can ensure that the mixed gas on the outer tube 110 of the gun body 100 can be fully transported to the outlet of the gun barrel 120 .

[0025] In traditional burners, after natural gas and air enter the burner, they are simply allowed to mix naturally in the cavity. However, due to the different properties of the two gases and the short residence time in the cavity, the natural gas and air are not mixed evenly. When the gas is sent into the kiln and ignited, part of the natural gas is not fully burned due to lack of air, resulting in energy waste. Moreover, due to the uneven mixing of natural gas and air, when the temperature of the kiln needs to be precisely controlled, it cannot be systematically and accurately controlled by controlling the flow rate of natural gas, which increases the difficulty of regulation and reduces the accuracy of kiln temperature control.

[0026] To this end, the combustion device of the present invention also provides a mixing mechanism 200 in the mixing chamber 101, through which the natural gas and air can be fully mixed, so that the natural gas can be fully burned, thereby improving the energy utilization rate of the kiln and facilitating the precise temperature control of the kiln.

[0027] For details, see Figure 3 , Figure 4 The mixing mechanism 200 includes a core tube 300 and an outer tube 400 from the inside to the outside. The core tube 300 is sleeved on the outer periphery of the gas intake pipe 102, and the outer tube 400 is sleeved outside the core tube 300.

[0028] See also Figure 1 , Figure 2 At the center of the rear end of the outer tube 110, the gas inlet pipe 102 is deeply arranged. The gas inlet pipe 102, the core tube 300, the outer tube 400 and the outer tube 110 are basically concentrically arranged. An air inlet pipe 103 is arranged at the lower side of the outer tube 110. The air inlet pipe 103 and the gas inlet pipe 102 are both connected to the mixing chamber 101. Natural gas enters the mixing chamber 101 through the gas inlet pipe 102, and air enters the mixing chamber 101 through the air inlet pipe 103. Under the action of the mixing mechanism 200, the two gases are fully mixed, and then transported forward to the gun barrel 120 after mixing, and finally enter the kiln for combustion.

[0029] See also Figure 3 As a further preferred embodiment, the gas intake pipe 102 penetrates to a depth of about 1 / 4 of the length of the rear portion 112 of the outer tube 110, that is, the outlet position of the gas intake pipe 102 is approximately located at a position of 1 / 4 of the length of the rear portion 112 of the outer tube 110, and correspondingly, the outlet position of the air intake pipe 103 is also substantially opposite to the outlet position of the gas intake pipe 102; the length of the core tube 300 is about 1 / 2 of the length of the rear portion 112 of the outer tube 110, and the length of the outer tube 400 is about 9 / 10 of the length of the rear portion 112 of the outer tube 110. It can be understood that, during installation, the core tube 300 and the outer tube 400 are both against the rear cover of the outer tube 110.

[0030] In this way, after the natural gas comes out from the gas inlet pipe 102, it is first dispersed under the action of the core tube 300, and after the air enters the mixing chamber 101, it is dispersed through the outer tube 400, and then the dispersed natural gas and air are fully mixed in the mixing chamber 101.

[0031] As a further preferred embodiment, the outer circumference of the core tube 300 is provided with air holes 310. There are a plurality of air holes 310, and the arrangement density of the air holes 310 near the rear side of the core tube 300 is greater than the arrangement density of the air holes 310 near the front side of the core tube 300. Figure 3 , Figure 4 , the air holes 310 are arranged in a ring shape on the outer circumference of the core tube 300, that is, there are multiple circles of air holes 310 distributed on the outer circumference of the core tube 300. Specifically, with the outlet of the gas inlet pipe 102 as the boundary, the aperture of the air holes at the rear end of the core tube 300 is larger than the aperture of the air holes at the front end, and the hole spacing of the air holes at the rear end is smaller than the hole spacing of the air holes at the front end. Since the natural gas is sent out from the gas inlet pipe 102 along the front-to-back direction, and the gas after coming out will pass through the air holes 310, the arrangement density of the air holes 310 is made different from the front to the back, so that the front is smaller and the back is larger, so that the natural gas is easier to pass through the air holes at the rear, but relatively more difficult at the front, so that the natural gas can pass through the core tube 300 more evenly.

[0032] As a further preferred embodiment, see Figure 4 The outer tube 400 is provided with a first air inlet hole 410 at the rear side, and a second air inlet hole 420 is provided at the front side of the outer tube 400, and the aperture of the second air inlet hole 420 is larger than the aperture of the first air inlet hole 410. The second air inlet hole 420 is relatively inclined, and an air guide tube 430 is sleeved on the second air inlet hole 420. The first air inlet holes 410 are basically all located at the periphery of the orthographic projection of the core tube 300, while most of the second air inlet holes 420 are located at the front end of the core tube 300. In addition, as a further preferred embodiment, the air inlet pipe 103 deviates from the center of the outer tube 110, so that after the air enters the mixing chamber 101, a spiral air duct is formed in the mixing chamber 101, so as to be better mixed with the natural gas. Since the air flows in a spiral manner on the inner wall of the outer tube 110 and the second air inlet 420 is relatively inclined, the air can more easily pass through the air guide tube 430 and enter the inner part of the outer tube 400 to merge, interact and mix with the natural gas dispersed by the core tube 300.

[0033] As a further preferred embodiment, a gas separation mechanism 500 is provided at the outlet of the gas intake pipe 102, and the gas separation mechanism 500 includes a cone head 510, and the outer diameter of the front end of the cone head 510 is larger than the outer diameter of the rear end. The gas separation mechanism 500 also includes an air guide plate 520, and there are multiple air guide plates 520, and the multiple air guide plates 520 are evenly distributed on the periphery of the outlet of the gas intake pipe. The air guide plates 520 are arranged on the periphery of the gas intake pipe 102 in a spirally inclined manner. By adding the gas separation mechanism 500, after the natural gas comes out of the outlet, it first hits the cone head 510, and then is dispersed, and then passes through multiple air guide plates 520, so that the mixing of air and natural gas is more uniform.

[0034] See also Figure 1 , Figure 2 As a further preferred embodiment, the front end of the gun barrel 120 is provided with an elbow 122. Through the elbow 122, the combustion position of the kiln can be adjusted. Since the gun barrel 120 itself is detachably mounted on the outer cylinder 110, when the injection angle of the burner needs to be adjusted, the installation angle of the gun barrel 120 can be adjusted. For example, the flange 113 and the connecting plate 121 are connected by 8 bolts. When the angle of the burner needs to be adjusted, it is only necessary to adjust the matching of the connecting plate 121 and the flange 113. Each adjustment of a bolt can adjust 45°. Of course, the more bolts there are between the flange 113 and the connecting plate 121, the wider the angle range of the burner can be adjusted; or an arc-shaped connecting hole is set on the connecting plate 121, and the injection angle of the burner can also be adjusted by selecting the installation position of the connecting plate 121.

[0035] As a further preferred embodiment, it further includes an air supply mechanism 20, the air supply mechanism 20 includes an air outlet pipe and an air volume adjustment unit, the air outlet pipe is connected to the air inlet pipe. The air volume adjustment unit can be used to conveniently adjust the burner gun to meet the temperature control requirements of the kiln. The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A combustion device for a glass furnace, comprising a burning gun, characterized in that: The burner gun includes an outer tube and a gun barrel, and the gun barrel is detachably connected to the outer tube; a gas inlet pipe is provided on the rear side of the outer tube, and an air inlet pipe is provided on the lower side of the outer tube. A mixing mechanism is also provided in the outer tube, and the mixing mechanism is connected to the air inlet pipe and the gas inlet pipe.

2. The combustion device of the glass furnace according to claim 1, characterized in that: The mixing mechanism comprises a core tube, the core tube is sleeved on the outer circumference of the fuel gas inlet pipe, and air holes are arranged on the outer circumference of the core tube.

3. The combustion device of the glass furnace according to claim 2, characterized in that: There are a plurality of ventilation holes, and the arrangement density of the ventilation holes near the rear side of the core tube is greater than the arrangement density of the ventilation holes near the front side of the core tube.

4. The combustion device of the glass furnace according to claim 2, characterized in that: The mixing mechanism also includes an outer tube, which is sleeved on the outside of the core tube. The length of the outer tube is greater than the length of the core tube. A first air inlet hole is provided on the rear side of the outer tube, and a second air inlet hole is provided on the front side of the outer tube. The first air inlet hole is close to the core tube, and the aperture of the second air inlet hole is greater than the aperture of the first air inlet hole.

5. The combustion device of the glass furnace according to claim 4, characterized in that: The second air inlet hole is relatively inclined and is covered with an air guide pipe.

6. The combustion device of the glass furnace according to claim 1, characterized in that: A gas distribution mechanism is provided on the outlet of the gas inlet pipe. The gas distribution mechanism comprises a cone head. The outer diameter of the front end of the cone head is greater than the outer diameter of the rear end.

7. The combustion device of the glass furnace according to claim 6, characterized in that: The gas distribution mechanism also includes a gas guide plate, and there are multiple gas guide plates, and the multiple gas guide plates are evenly distributed on the periphery of the outlet of the fuel gas intake pipe.

8. The combustion device of the glass furnace according to claim 1, characterized in that: The front end of the gun barrel is provided with an elbow.

9. The combustion device of the glass furnace according to claim 8, characterized in that: A flange is provided at the front end of the outer tube, a connecting plate is provided at the rear side of the gun barrel, a plurality of through holes distributed at equal intervals are provided on the connecting plate and the flange, and the flange and the connecting plate are connected by bolts.

10. The combustion device of the glass furnace according to claim 1, characterized in that: It also includes an air supply mechanism, which includes an air outlet pipe and an air volume adjustment unit, and the air outlet pipe is connected to the air inlet pipe.

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