Fuel oil and air mixing structure special for combustor

Abstract

The utility model discloses a special fuel oil and air mixing structure for a burner, which relates to the field of burner accessories and comprises an air inlet bin, two ends of the air inlet bin are respectively connected with an air inlet and a transmission bin, the outer side of the transmission bin is connected with a mixing bin and an air outlet, and a motor is mounted in the transmission bin. The output end of the motor is connected with air inlet fan blades and diffusion fan blades, the air inlet fan blades are located in the air inlet bin, the diffusion fan blades are located in the mixing bin, an oil inlet pipe is installed on the outer side of the mixing bin and extends into the mixing bin to be aligned with the diffusion fan blades, and a fixing steel ring is installed on the inner wall of the mixing bin. By means of the sealing plate and the fixing steel ring, when the combustor is not used any more, the sealing plate is pulled by the return spring to be tightly attached to the fixing steel ring, and the edge of the sealing plate is sealed through the inclined sleeve, so that mixed fuel in the mixing bin cannot be discharged from the transmission bin, and fuel leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the field of burner accessories, in particular to a special fuel-air mixing structure for burners. Background Art

[0002] Burner is a general term for a device that sprays fuel and air in a certain way to mix and burn. Burners are divided into industrial burners, burners, civil burners, and special burners according to their types and application areas. Burners usually need to supply air and mix fuel with air.

[0003] The prior art, such as CN218864160U, discloses an annular atomizing fuel burner, comprising an annular shell and an oil pump, wherein an annular cavity is provided inside the annular shell, a mixing tube is fixed inside the annular cavity, the mixing tube is spiral-shaped, the cross section of the mixing tube is circular, a plurality of air inlet tubes are evenly fixed to the side wall of the mixing tube, and the number of the air inlet tubes is at least three;

[0004] The two ends of the mixing tube are respectively fixedly connected to the inlet pipe and the outlet pipe, the end of the annular shell is fixedly connected to the solenoid valve corresponding to the position of the inlet pipe, the oil pump is connected to one end of the first oil pipe, and the other end of the first oil pipe is connected to the solenoid valve.

[0005] Although the prior art can mix fuel and air in a sealed environment, the fuel is usually directly impacted and mixed by airflow during the mixing process. However, this mixing method needs to pass through a long pipe during the mixing process, which results in a larger mixing structure and affects installation. Secondly, when the mixing is stopped, the residual fuel in the mixing mechanism is prone to leakage. Utility Model Content

[0006] Based on this, the purpose of the utility model is to provide a fuel-air mixing structure dedicated to a burner, so as to solve the technical problem that the mixing structure is too large and the fuel is prone to leakage when the mixing is stopped.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel-air mixing structure dedicated to a burner, comprising an air intake bin, wherein the two ends of the air intake bin are respectively connected with an air intake port and a transmission bin, the outer side of the transmission bin is connected with a mixing bin and an air outlet, a motor is installed inside the transmission bin, the output end of the motor is connected with an air intake blade and a diffusion blade, the air intake blade is located inside the air intake bin, the diffusion blade is located inside the mixing bin, an oil inlet pipe is installed outside the mixing bin, the oil inlet pipe extends to the inside of the mixing bin and is aligned with the diffusion blade, a fixed steel ring is installed on the inner wall of the mixing bin, a sealing plate is connected to one side of the fixed steel ring, the sealing plate is sleeved on the outer side of the motor output end, and a plurality of return springs are connected between the fixed steel ring and the sealing plate.

[0008] By adopting the above technical solution, the motor can drive the air intake blades and the diffusion blades to inhale the outside air, and at the same time the diffusion blades can be used to break up the fuel, so that the air and fuel are fully mixed to improve the mixing effect.

[0009] The utility model is further configured that a plurality of groups of filter plates are installed inside the air inlet, and the aperture of each group of filter plates gradually decreases from the outside to the inside.

[0010] By adopting the above technical solution, the incoming air can be filtered through the filter plate.

[0011] The utility model is further configured that a fixing frame is provided on the outer wall of the motor, and the motor is fixedly connected to the transmission compartment via the fixing frame.

[0012] By adopting the above technical solution, the motor can be fixed by the fixing frame.

[0013] The utility model is further configured that an oblique sleeve is provided on the outer wall of the sealing plate, and a sealing sleeve matching the oblique sleeve is provided on the outer wall of the fixed steel ring.

[0014] By adopting the above technical solution, the sealing plate and the fixed steel ring can be conveniently sealed and connected.

[0015] The utility model is further configured such that the end of the diffusion blade is connected with a protruding rib, and the top of the protruding rib is inclined.

[0016] By adopting the above technical solution, the fuel can be fully crushed by the protruding ribs.

[0017] The utility model is further configured that fixing rings are installed at both ends of the air intake bin, and the air intake bin is fixedly connected to the air inlet and the transmission bin through the fixing rings.

[0018] By adopting the above technical solution, it is convenient to connect the air intake bin with each group of components.

[0019] The utility model is further configured that the inner wall of the air inlet is provided with a plurality of groups of engaging grooves, and the filter plate is fixedly connected to the air inlet via the engaging grooves.

[0020] By adopting the above technical solution, it is convenient to install the filter plate.

[0021] In summary, the utility model mainly has the following beneficial effects:

[0022] 1. The utility model uses a motor, an air intake fan blade and a diffuser fan blade. During the air intake process, the motor can synchronously drive the diffuser fan blade to rotate, the oil inlet pipe injects the fuel into the mixing chamber, and the diffuser fan blade breaks up the fuel, so that the fuel and the airflow can be fully mixed, thereby improving the mixing effect.

[0023] 2. The utility model provides a sealing plate and a fixed steel ring. When the burner is not in use, the return spring pulls the sealing plate and the fixed steel ring into close contact. The edge of the sealing plate is sealed by the inclined sleeve, so that the mixed fuel in the mixing chamber will not be discharged from the transmission chamber, thereby reducing fuel leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a schematic structural diagram of the cross section of the utility model;

[0026] Figure 3 It is a structural schematic diagram of the transmission mechanism of the utility model;

[0027] Figure 4 For this utility model Figure 3 A schematic diagram of the structure with a partial enlargement at the center;

[0028] Figure 5 It is a structural schematic diagram of the diffusion fan blade of the utility model.

[0029] In the figure: 1. air intake chamber; 2. air inlet; 3. transmission chamber; 4. mixing chamber; 5. oil inlet pipe; 6. air outlet; 7. air intake fan blades; 8. filter plate; 9. motor; 10. sealing plate; 1001. inclined sleeve; 11. diffusion fan blades; 1101. protruding ribs; 12. fixed steel ring; 1201. return spring. DETAILED DESCRIPTION

[0030] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0031] The following describes an embodiment of the utility model based on its overall structure.

[0032] A fuel-air mixing structure for a burner, such as Figures 1 to 5As shown, it includes an air intake bin 1, the two ends of the air intake bin 1 are respectively connected with an air inlet 2 and a transmission bin 3, the outer side of the transmission bin 3 is connected with a mixing bin 4 and an air outlet 6, a motor 9 is installed inside the transmission bin 3, the output end of the motor 9 is connected with an air intake blade 7 and a diffusion blade 11, the air intake blade 7 is located inside the air intake bin 1, and the motor 9 is started to suck the outside air into the air intake bin 1 through the air intake blade 7, the diffusion blade 11 is located inside the mixing bin 4, the end of the diffusion blade 11 is connected with a protruding rib 1101, the top of the protruding rib 1101 is inclined, and an oil inlet pipe 5 is installed on the outer side of the mixing bin 4, and the oil inlet pipe 5 extends to the mixing bin 4. The interior of the mixing chamber 4 is aligned with the diffusion blades 11, and the incoming fuel can be broken up by the diffusion blades 11 to mix it with the air. A fixed steel ring 12 is installed on the inner wall of the mixing chamber 4, and a sealing plate 10 is connected to one side of the fixed steel ring 12. The sealing plate 10 is sleeved on the outside of the output end of the motor 9. Multiple groups of return springs 1201 are connected between the fixed steel ring 12 and the sealing plate 10. An inclined sleeve 1001 is provided on the outer wall of the sealing plate 10, and a sealing sleeve matching the inclined sleeve 1001 is provided on the outer wall of the fixed steel ring 12. When the burner is not in use, the return spring 1201 can drive the sealing plate 10 and the fixed steel ring 12 to seal.

[0033] See also Figure 2 A plurality of filter plates 8 are installed inside the air inlet 2, and the aperture of each filter plate 8 gradually decreases from the outside to the inside. A plurality of snap-fit ​​grooves are provided on the inner wall of the air inlet 2. The filter plates 8 are fixedly connected to the air inlet 2 through the snap-fit ​​grooves, and can filter the incoming air.

[0034] See also Figure 2 A fixing frame is provided on the outer wall of the motor 9, and the motor 9 is fixedly connected to the transmission compartment 3 through the fixing frame, so that the motor 9 can be conveniently fixed.

[0035] See also Figure 1 and Figure 2 Fixed rings are installed at both ends of the air intake bin 1, and the air intake bin 1 is fixedly connected to the air inlet 2 and the transmission bin 3 through the fixed rings, so that the air intake bin 1 can be connected to other mechanisms.

[0036] When in use, the mixing structure is first installed in the burner, and connected to the external oil tank through the oil inlet pipe 5. When oil needs to be added, the motor 9 is first started. The motor 9 drives the air intake blades 7 and the diffusion blades 11 to rotate. The air intake blades 7 suck the external air from the air inlet 2 into the mixing structure, and filter and remove the air through multiple groups of filter plates 8. Then the airflow passes through the motor 9 and reaches the mixing chamber 4. The airflow pushes the sealing plate 10 to move, so that the inclined sleeve 1001 is separated from the fixed steel ring 12 to produce a gap. The airflow enters the mixing chamber 4 through the edge of the sealing plate 10, and then a sufficient amount of fuel is injected into the mixing chamber 4 through the oil inlet pipe 5. When the fuel enters the mixing chamber 4, the diffusion blades 11 impact and break the fuel through the protruding ribs 1101 at the end, so that the fuel and air are fully mixed to improve the mixing effect. The mixed fuel and air will be discharged into the burner through the air outlet 6 to improve the combustion effect.

[0037] When the burner no longer takes in air, the motor 9 is turned off, the air intake blades 7 and the diffusion blades 11 stop rotating, and the outside airflow cannot enter the mixing chamber 4. Under the action of the return spring 1201, the sealing plate 10 returns to its original position, so that the inclined sleeve 1001 fits tightly with the fixed steel ring 12, thereby sealing the mixing chamber 4, so that the fuel gas in the mixing chamber 4 will not be discharged from the transmission chamber 3, thereby improving the sealing effect of the fuel.

[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A fuel-air mixing structure for a burner, comprising an air inlet chamber (1), characterized in that: The two ends of the air inlet bin (1) are respectively connected to an air inlet (2) and a transmission bin (3); the outer side of the transmission bin (3) is connected to a mixing bin (4) and an air outlet (6); a motor (9) is installed inside the transmission bin (3); the output end of the motor (9) is connected to an air inlet blade (7) and a diffusion blade (11); the air inlet blade (7) is located inside the air inlet bin (1); the diffusion blade (11) is located inside the mixing bin (4); an oil inlet pipe (5) is installed outside the mixing bin (4); the oil inlet pipe (5) extends to the inside of the mixing bin (4) and is aligned with the diffusion blade (11); a fixed steel ring (12) is installed on the inner wall of the mixing bin (4); a sealing plate (10) is connected to one side of the fixed steel ring (12); the sealing plate (10) is sleeved on the outer side of the output end of the motor (9); and a plurality of return springs (1201) are connected between the fixed steel ring (12) and the sealing plate (10).

2. A fuel-air mixing structure for a burner according to claim 1, characterized in that: A plurality of groups of filter plates (8) are installed inside the air inlet (2), and the aperture of each group of filter plates (8) gradually decreases from the outside to the inside.

3. The burner-specific fuel-air mixing structure according to claim 1, characterized in that: The outer wall of the motor (9) is provided with a fixing frame, and the motor (9) is fixedly connected to the transmission compartment (3) via the fixing frame.

4. The burner-specific fuel-air mixing structure according to claim 1, characterized in that: An oblique sleeve (1001) is provided on the outer wall of the sealing plate (10), and a sealing sleeve matching the oblique sleeve (1001) is provided on the outer wall of the fixed steel ring (12).

5. The burner-specific fuel-air mixing structure according to claim 1, characterized in that: The end of the diffusion blade (11) is connected to a protruding rib (1101), and the top end of the protruding rib (1101) is arranged at an inclination.

6. The burner-specific fuel-air mixing structure according to claim 1, characterized in that: Fixed rings are installed at both ends of the air intake bin (1), and the air intake bin (1) is fixedly connected to the air intake port (2) and the transmission bin (3) via the fixed rings.

7. The burner-specific fuel-air mixing structure according to claim 2, characterized in that: The inner wall of the air inlet (2) is provided with a plurality of groups of snap-fit ​​grooves, and the filter plate (8) is fixedly connected to the air inlet (2) via the snap-fit ​​grooves.

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