A low-pressure, long-range, energy-saving burner for industrial kilns

Abstract

The invention belongs to the technical field of industrial kilns, specifically a low-pressure, long-range, energy-saving burner for industrial kilns, which includes: an end cover, an outer shell, a small gas pipe, a combustion-supporting middle pipe, a combustion-supporting air outer sleeve, an air vane, an electrode and a premixing layer. A gas inlet is provided at the top of the end cover, and an outer shell is installed on one side of the end cover. A combustion-supporting air inlet is provided at the top of the outer shell, and a small gas pipe is connected to the bottom of the gas inlet. The low-pressure, long-range, energy-saving burner for industrial kilns is energy-saving and has a long spray gun range. It improves the problem of cross-sectional temperature difference and carbon deposition by increasing the combustion-supporting air. The combustion-supporting air has a small pressure and is fully burned, which can reduce the amount of cold air entering the kiln, thereby reducing gas energy consumption. The positive pressure of the kiln is small, which can reduce the smoke exhaust fan, avoid the loss of heat caused by the stratification of the airflow in the negative pressure section, and make full use of the heat. The air vane fixes the gas pipe and the premixing pipe at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of industrial kilns, and in particular to a low-pressure, long-range, industrial kiln energy-saving burner. Background Art

[0002] Burner is the common name for the combustion device used in industrial fuel furnaces. It can be understood as the abbreviation of "fire nozzle". It usually refers to the main body of the combustion device, which has fuel inlet, air inlet and spray hole, and plays the role of distributing fuel and combustion air and spraying them in a certain way for combustion. The ratio of combustion air and gas in the old spray gun is unreasonable, the energy consumption is large, the combustion is not complete, the range is short, and the general burner combustion requires very high pressure to solve the problems of carbon deposition and dirt, and the temperature difference of the kiln section caused by the burner. Summary of the invention

[0003] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0004] In view of the above problems and / or problems existing in existing energy-saving burners, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a low-pressure, long-range energy-saving burner for industrial kilns, which is energy-saving and has a long spray gun range, and improves the problem of cross-sectional temperature difference and carbon deposition and dirtiness by increasing the combustion-supporting air; the combustion-supporting air has a small pressure and complete combustion, which can reduce the amount of cold air entering the kiln, thereby reducing gas energy consumption; the kiln has a small positive pressure, which can reduce the smoke exhaust fan, avoid heat loss caused by air flow stratification in the negative pressure section, and make full use of the heat; the air vane fixes the gas pipe and the premixing pipe at the same time.

[0006] To solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0007] A low-pressure long-range industrial furnace energy-saving burner, comprising: an end cover, an outer shell, a small gas tube, a combustion-supporting middle tube, a combustion-supporting air outer sleeve, an air blade, an electrode and a premixing layer, a gas inlet is provided at the top of the end cover, a shell is installed on one side of the end cover, a combustion-supporting air inlet is provided at the top of the shell, a small gas tube is connected to the bottom end of the gas inlet, a plurality of first ventilation holes are provided at one end of the small gas tube, a combustion-supporting middle tube is connected to the outside of the gas inlet, a plurality of first ventilation holes are provided at one end of the combustion-supporting middle tube Two ventilation holes, the combustion-supporting middle tube is located outside the small gas tube, a combustion-supporting air outer sleeve is installed on the inner side of one end of the outer shell, the small gas tube and one end of the combustion-supporting middle tube are installed with air vanes, the top and bottom ends of the air vanes are provided with electrode holes, and the air vanes are provided with combustion-supporting air outlets, premixing holes and gas outlets in annular shapes equidistantly from the outside to the inside, electrodes are installed on the top and bottom ends of the end cover, one end of the two electrodes is respectively connected to two electrode holes, and a premixing layer is formed between the small gas tube and the combustion-supporting middle tube.

[0008] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, a gas pressure and flow detection valve is installed on the gas inlet, and an air pressure and flow detection valve is installed on the combustion-supporting air inlet.

[0009] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, an observation window is installed at one end of the end cover, and the observation window is made of heat-resistant transparent material.

[0010] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, a plurality of cooling holes are equidistantly provided on the combustion-supporting air jacket.

[0011] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, the spiral teeth opened on the outer side of the air blade are inclined, and the gas outlet is provided with an oblique angle.

[0012] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, the combustion-supporting air outer sleeve is made of high-temperature resistant stainless steel material.

[0013] As a preferred solution of the low-pressure long-range industrial furnace energy-saving burner described in the present invention, fixing holes are provided at four corners of one side wall of the shell, and internal threads are provided in the four fixing holes.

[0014] Compared with the prior art: when the combustion-supporting middle pipe and the small gas pipe are connected, the gas enters through the gas inlet, and a first ventilation hole is provided at the middle and upper end of the gas main pipe. The first ventilation hole and the combustion-supporting middle pipe are premixed. After the combustion-supporting middle pipe and the gas are premixed, they are transported to the air vane by the combustion-supporting air. Under the rotation of the combustion-supporting air outlet, the premixing hole and the gas outlet on the air vane, the gas, the premixed gas and the combustion-supporting gas are mixed and burned, and the spray gun burns more fully, thereby increasing the range of the spray gun. The low-pressure and long-range industrial kiln energy-saving burner is energy-saving and has a long spray gun range. The problem of cross-sectional temperature difference and carbon deposition and dirt is solved by increasing the combustion-supporting air; the combustion-supporting air has a small pressure and burns fully, which can reduce the amount of cold air entering the kiln, thereby reducing gas energy consumption; the kiln has a small positive pressure, which can reduce the smoke exhaust fan, avoid heat loss caused by airflow stratification in the negative pressure section, and make full use of the heat; the air vane fixes the gas pipe and the premixing pipe at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 is a cross-sectional view of the present invention;

[0018] Figure 3 is an internal view of the present invention;

[0019] Figure 4 A top view of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the wind blade of the present invention.

[0021] In the figure: 100 end cover, 110 gas inlet, 120 gas pressure and flow detection valve, 130 observation window, 200 shell, 210 combustion-supporting air inlet, 211 air pressure and flow detection valve, 220 fixing hole, 300 small gas pipe, 310 first ventilation hole, 400 combustion-supporting middle pipe, 410 second ventilation hole, 500 combustion-supporting air outer sleeve, 510 cooling hole, 600 air vane, 610 electrode hole, 620 combustion-supporting air outlet, 630 premixing hole, 640 gas outlet, 650 rotary gear, 700 electrode, 800 premixing layer. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional space dimensions of length, width and depth should be included.

[0025] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] The present invention provides a low-pressure, long-range industrial kiln energy-saving burner, which is energy-saving and has a long spray gun range. It improves the problem of cross-section temperature difference and carbon deposition by increasing the combustion-supporting air; the combustion-supporting air pressure is small and the combustion is sufficient, which can reduce the amount of cold air entering the kiln, thereby reducing gas energy consumption; the kiln positive pressure is small, which can reduce the smoke exhaust fan, avoid the loss of heat caused by the stratification of the air flow in the negative pressure section, and make full use of the heat; the air blade 600 fixes the gas pipe and the premixing pipe at the same time, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , including: an end cover 100, a shell 200, a small gas pipe 300, a combustion-supporting middle pipe 400, a combustion-supporting air outer sleeve 500, an air blade 600, an electrode 700 and a premixing layer 800;

[0027] Please refer again Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5A gas inlet 110 is provided at the top of the end cover 100, a shell 200 is installed on one side of the end cover 100, a combustion-supporting air inlet 210 is provided at the top of the shell 200, a small gas tube 300 is connected to the bottom end of the gas inlet 110, one end of the small gas tube 300 is provided with eight first ventilation holes, a combustion-supporting middle tube 400 is connected to the outside of the gas inlet 110, one end of the combustion-supporting middle tube 400 is provided with eight second ventilation holes, the combustion-supporting middle tube 400 is located on the outside of the small gas tube 300, a combustion-supporting air outer sleeve 500 is installed on the inner side of one end of the shell 200, an air vane 600 is installed at one end of the small gas tube 300 and the combustion-supporting middle tube 400, and the top and bottom ends of the air vane 600 are both provided with There is an electrode hole 610, and the air blade 600 is provided with a combustion-supporting air outlet, a premixing hole 630 and a gas outlet 640 in an equidistant circular pattern from the outside to the inside. Electrodes 700 are installed at the top and bottom of the end cover 100, and one end of the two electrodes 700 is respectively connected to two electrode holes 610. A premixing layer 800 is formed between the small gas tube 300 and the combustion-supporting middle tube 400. Specifically, a gas inlet 110 is provided at the top of the end cover 100, and one side of the end cover 100 is threadedly connected to the outer shell 200 by bolts. A combustion-supporting air inlet 210 is provided at the top of the outer shell 200, and the bottom end of the gas inlet 110 is threadedly connected to the small gas tube 300, and one end of the small gas tube 300 is provided with eight first ventilation holes. The outer side of the gas inlet 110 is threadedly connected to a combustion-supporting middle tube 400, and one end of the combustion-supporting middle tube 400 is provided with eight second ventilation holes. The combustion-supporting middle tube 400 is located on the outside of the small gas tube 300, and one end of the outer shell 200 is threadedly provided with a combustion-supporting air outer sleeve 500. The small gas tube 300 and one end of the combustion-supporting middle tube 400 are threaded with air vanes 600, and the top and bottom ends of the air vanes 600 are provided with electrode holes 610. The air vanes 600 are provided with combustion-supporting air outlets, premixing holes 630 and gas outlets 640 in an equidistant manner from the outside to the inside. The top and bottom ends of the end cover 100 are threadedly connected to electrodes 700, and one end of the two electrodes 700 is respectively penetrated and connected with two electrode holes 610. 100 is used to fix the small gas tube 300, the combustion-supporting middle tube 400 and the outer shell 200, a premixed layer 800 is formed between the small gas tube 300 and the combustion-supporting middle tube 400, the outer shell 200 is used to protect and fix the inner pipeline, the gas inlet 110 is used to introduce the gas, the combustion-supporting air inlet 210 is used to introduce the combustion-supporting air, the small gas tube 300 is used to provide a channel for the gas to flow, the first ventilation hole and the second ventilation hole are used to provide a ventilation function, the combustion-supporting middle tube 400 is used to provide a channel for the combustion-supporting air to flow, the combustion-supporting air outer sleeve 500 is used to concentrate and restrain the flame appearing in the burner to form a strong, high-speed blue-white flame that is ejected straight forward, and the wind blade 600 is used to rotate the gas, premixed gas and combustion-supporting gas to achieve a better combustion effect.The combustion-supporting air outlet 620, the premixing hole 630 and the gas outlet 640 are used to respectively guide out the combustion-supporting air, the premixed gas and the gas; the electrode 700 is used to automatically detect and control the working state of the device; the premixing layer 800 is used to provide a premixing space;

[0028] Please refer again Figure 1 and Figure 4 A gas pressure and flow detection valve 120 is installed on the gas inlet 110, and a wind pressure and flow detection valve 211 is installed on the combustion-supporting air inlet 210. Specifically, the gas inlet 110 is embedded with a gas pressure and flow detection valve 120, and the combustion-supporting air inlet 210 is embedded with a wind pressure and flow detection valve 211. The gas pressure and flow detection valve 120 is used to detect and control the flow of gas, and the wind pressure and flow detection valve 211 is used to detect and control the flow of combustion-supporting air.

[0029] Please refer again Figure 1 and Figure 4 An observation window 130 is installed at one end of the end cover 100, and the observation window 130 is made of a heat-resistant transparent material. Specifically, one end of the end cover 100 is embedded and connected with the observation window 130, and the observation window 130 is made of a heat-resistant transparent material. The observation window 130 is used to facilitate the observation of the combustion situation inside the device.

[0030] Please refer again Figure 1 and Figure 4 The combustion-supporting air jacket 500 is provided with six cooling holes 510 at equal intervals, and the cooling holes 510 are used to provide a cooling function.

[0031] Please refer again Figure 2 and Figure 5 In order to allow the air vane 600 to rotate the gas, premixed gas and supporting gas, the rotating teeth 650 provided on the outer side of the air vane 600 are inclined, and the gas outlet 640 is provided with an oblique angle.

[0032] Please refer again Figure 1 , Figure 2 , Figure 3 and Figure 4 In order to make the combustion-supporting air outer sleeve 500 more durable, the combustion-supporting air outer sleeve 500 is made of high-temperature resistant stainless steel material.

[0033] Please refer again Figure 2 A fixing hole 220 is formed at four corners of a side wall of the housing 200 . Internal threads are provided in the four fixing holes 220 . The fixing holes 220 are used to facilitate fixing the housing 200 .

[0034] During specific use, when the combustion-supporting middle tube 400 and the small gas tube 300 are connected, the gas enters through the gas inlet 110, and a first ventilation hole 310 is provided at the upper end of the gas main tube. The first ventilation hole 310 and the combustion-supporting middle tube 400 are pre-mixed. After the combustion-supporting middle tube 400 and the gas are pre-mixed, they are transported to the air vane 600 by the combustion-supporting wind. Under the rotation action of the combustion-supporting air outlet 620, the premixing hole 630 and the gas outlet 640 on the air vane 600, the gas, premixed gas and the combustion-supporting gas are mixed and burned, and the spray gun burns more fully, thereby increasing the range of the spray gun.

[0035] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced by equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A low-pressure, long-range, industrial furnace energy-saving burner, characterized in that: include: An end cover (100), an outer shell (200), a small gas tube (300), a combustion-supporting middle tube (400), a combustion-supporting air outer sleeve (500), an air blade (600), an electrode (700) and a premixing layer (800), wherein a gas inlet (110) is provided at the top of the end cover (100), a outer shell (200) is installed on one side of the end cover (100), a combustion-supporting air inlet (210) is provided at the top of the outer shell (200), a small gas tube (300) is connected to the bottom end of the gas inlet (110), a plurality of first ventilation holes are provided at one end of the small gas tube (300), a combustion-supporting middle tube (400) is connected to the outer side of the gas inlet (110), a plurality of second ventilation holes are provided at one end of the combustion-supporting middle tube (400), the combustion-supporting middle tube (400) is located at the outer side of the small gas tube (300), and a gas inlet (210) is provided at the inner side of one end of the outer shell (200). A combustion-supporting air outer sleeve (500) is provided, one end of the small gas tube (300) and the combustion-supporting middle tube (400) is provided with an air vane (600), the top and bottom ends of the air vane (600) are provided with electrode holes (610), the air vane (600) is provided with combustion-supporting air outlets, premixing holes (630) and gas outlets (640) in a circular manner equidistantly from the outside to the inside, and the top and bottom ends of the end cover (100) are provided with electrode holes (610). The two electrodes (700) are connected to two electrode holes (610) at one end thereof, a premixing layer (800) is formed between the small gas tube (300) and the combustion-supporting middle tube (400), a plurality of cooling holes (510) are equidistantly provided on the combustion-supporting air jacket (500), the spiral teeth (650) provided on the outer side of the air blade (600) are inclined, and the gas outlet (640) is provided with an oblique angle.

2. A low-pressure long-range industrial furnace energy-saving burner according to claim 1, characterized in that: A gas pressure and flow detection valve (120) is installed on the gas inlet (110), and an air pressure and flow detection valve (211) is installed on the combustion-supporting air inlet (210).

3. The low-pressure long-range industrial furnace energy-saving burner according to claim 1 is characterized in that: An observation window (130) is installed at one end of the end cover (100), and the observation window (130) is made of a heat-resistant transparent material.

4. The low-pressure long-range industrial furnace energy-saving burner according to claim 1 is characterized in that: The combustion-supporting air outer sleeve (500) is made of high-temperature resistant stainless steel material.

5. The low-pressure long-range industrial furnace energy-saving burner according to claim 1 is characterized in that: Fixing holes (220) are provided at four corners of a side wall of the housing (200), and internal threads are provided in the four fixing holes (220).

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