Combustion-supporting ventilation structure of incinerator

Abstract

The utility model discloses a kind of combustion-supporting ventilation structures of incinerator, it is related to the field of blast nozzle of ventilation structure, including air pipe, the one end of air pipe is shaped with air inlet nozzle, the inside of air pipe is equipped with the flow guide mechanism extending to the inside of the blast nozzle, the outer periphery of air pipe is integrally formed with the guide pipe projecting outward, the inside of guide pipe is equipped with the anti-reverse mechanism extending to the outside of the guide pipe, the flow guide mechanism includes wind cone, the one end cone portion of the inner wall of the blast nozzle of the air pipe is located with the blast nozzle between the air pipe with flow guide groove, the flow guide groove gradually narrows from inside to outside. The utility model can increase the pressure and flow rate of flowing air before flowing into incinerator by setting flow guide mechanism and anti-reverse mechanism, ensure sufficient contact with the incinerated object, and the anti-reverse mechanism can effectively avoid the phenomenon of flame reverse flow along air pipe caused by the increase of pressure in incinerator.

Description

Technical Field

[0001] This utility model relates to the field of ventilation nozzles in ventilation structures, specifically a combustion-supporting ventilation structure for an incinerator. Background Technology

[0002] During the incineration process, ventilation is required inside the incinerator to ensure complete combustion.

[0003] In existing technology, after flowing air flows in the pipe for a long time, its flow rate gradually slows down. After entering the incinerator, its pressure and flow rate are both low. After entering the incinerator, it is not easy to make full contact with the burning material. Secondly, under such circumstances, once the pressure in the incinerator increases, it is very easy for the flame to flow backward along the air duct. Utility Model Content

[0004] The purpose of this utility model is to provide a combustion-supporting ventilation structure for an incinerator in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combustion-supporting ventilation structure for an incinerator, comprising a duct, one end of which is formed with an air inlet nozzle, a flow guiding mechanism extending into the air inlet nozzle is installed inside the duct, an outwardly protruding guide tube is integrally formed on the outer circumference of the duct, an anti-reverse mechanism extending into the outside of the guide tube is installed inside the guide tube, the flow guiding mechanism includes a guide cone, and a flow guiding groove is formed between the conical end of the guide cone located on the inner wall of the air inlet nozzle and the air inlet nozzle of the duct, the flow guiding groove gradually narrowing from the inside to the outside.

[0006] As a further embodiment of this utility model: the air guiding mechanism further includes an inner fixing ring fixedly installed on the inner wall of the straight pipe section of the air duct and an outer fixing ring fixedly installed on the outer wall of the straight pipe section of the air guide cone. The inner fixing ring and the outer fixing ring have air guiding cone surfaces formed on their windward end faces. The inner fixing ring and the outer fixing ring are fixedly installed with a fixing rod, and the cross-section of the fixing rod is triangular.

[0007] As a further embodiment of this utility model: the anti-reverse mechanism includes a sliding plate slidably installed on the outer periphery of the air guide cone, the outer periphery of the sliding plate being located in the inner cavity of the guide tube, and a ceramic sealing ring being installed at the contact position between the sliding plate and the inner wall of the guide tube.

[0008] As a further embodiment of this utility model: the anti-reverse mechanism further includes a guide post fixedly installed on one end face of the sliding plate, the end of the guide post away from the sliding plate extending through to the outside of the guide tube, a connecting plate fixedly installed at the end of the guide post outside the guide tube, a guide rod fixedly connected to the outside of the guide tube slidably installed on the upper inside of the connecting plate, and a limit plate detachably connected to the end of the guide rod away from the guide tube, and a spring sleeved with the guide rod abutting between the limit plate and the connecting plate.

[0009] As a further embodiment of this utility model: a screw hole is provided at the end of the guide rod away from the guide tube, and a through hole is provided inside the limiting plate that is aligned with the screw hole, and a bolt passes through the through hole and is threadedly connected to the screw hole.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting up a flow guiding mechanism and an anti-backflow mechanism, the pressure and velocity of the flowing air before it flows into the incinerator can be increased, ensuring full contact with the incinerated material. The anti-backflow mechanism can effectively prevent the flame from flowing backward along the air duct when the pressure inside the incinerator increases. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the structure of the fixing rod of this utility model.

[0012] In the diagram: 1. Air duct; 2. Guide tube; 3. Air guide cone; 4. Inner fixing ring; 5. Fixing rod; 6. Sliding plate; 7. Guide column; 8. Connecting plate; 9. Guide rod; 10. Spring; 11. Outer fixing ring. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1-3In this embodiment of the present invention, a combustion-supporting ventilation structure for an incinerator includes an air duct 1. One end of the air duct 1 is formed with an air inlet nozzle. A flow guiding mechanism extending into the air inlet nozzle is installed inside the air duct 1. An outwardly protruding guide pipe 2 is integrally formed on the outer circumference of the air duct 1. An anti-reverse mechanism extending into the outside of the guide pipe 2 is installed inside the guide pipe 2. The flow guiding mechanism includes a guide cone 3. One end of the guide cone 3 located on the inner wall of the air inlet nozzle of the air duct 1 has a flow guiding groove between it and the air inlet nozzle of the air duct 1. The flow guiding groove gradually narrows from the inside to the outside.

[0015] In this embodiment: the fan introduces air into the air duct 1. The flowing air flows through the air duct 1 and passes through the flow guiding mechanism before entering the incinerator. The flow guiding groove between the flow guiding mechanism and the air nozzle of the air duct 1 compresses the air again, reducing the cross area of ​​the air flow, increasing the air flow pressure, and increasing the wind speed when the air enters the incinerator, so as to make more sufficient contact with the combustible material. When the pressure inside the combustion furnace is too high, the pressure will push the anti-reverse mechanism to reset. The reset anti-reverse mechanism closes the air duct 1 to prevent backflow.

[0016] Please refer to this carefully. Figure 1 and Figure 2 The flow guiding mechanism also includes an inner fixing ring 4 fixedly installed on the inner wall of the straight pipe section of the air duct 1 and an outer fixing ring 11 fixedly installed on the outer wall of the straight pipe section of the air guide cone 3. The inner fixing ring 4 and the outer fixing ring 11 have flow guiding cone surfaces formed on their windward end faces. The inner fixing ring 4 and the outer fixing ring 11 are fixedly installed with fixing rods 5, and the cross-section of the fixing rods 5 is triangular.

[0017] In this embodiment: when the flowing air passes through the guide channel, the cross-section of the airflow gradually narrows to increase the pressure of the flowing air, thereby increasing the flow velocity of the air when it enters the incinerator. Furthermore, since both ends of the guide cone 3 are cone-shaped, and in conjunction with the guide cone surface and the fixed rod 5 with a triangular cross-section, the resistance to the flowing air can be reduced.

[0018] Please refer to this carefully. Figure 1 and Figure 2 The anti-reverse mechanism includes a sliding plate 6 slidably installed on the outer periphery of the air guide cone 3. The outer periphery of the sliding plate 6 is located in the inner cavity of the guide tube 2. A ceramic sealing ring is installed at the contact position between the sliding plate 6 and the inner wall of the guide tube 2. The anti-reverse mechanism also includes a guide post 7 fixedly installed on one end face of the sliding plate 6. The end of the guide post 7 away from the sliding plate 6 extends through to the outside of the guide tube 2. A connecting plate 8 is fixedly installed at the end of the guide post 7 located outside the guide tube 2. A guide rod 9 fixedly connected to the outside of the guide tube 2 is slidably installed on the upper part of the connecting plate 8. A limit plate is detachably connected to the end of the guide rod 9 away from the guide tube 2. A spring 10 that is sleeved with the guide rod 9 is abutted between the limit plate and the connecting plate 8.

[0019] In this embodiment: when the pressure inside the incinerator is too high and exceeds the pressure inside the air duct 1, the pressure inside the incinerator acts on the sliding plate 6. The sliding plate 6 slides along the outer wall of the air guide cone 3 and drives the guide column 7 to slide axially. The guide column 7 can then drive the connecting plate 8 to slide along the outer wall of the guide rod 9. At this time, the spring 10 returns to its original position until one end of the sliding plate 6 abuts against one end of the inner wall of the guide tube 2. At this time, the ceramic sealing ring abuts against one end of the inner wall of the guide tube 2 to prevent air from flowing in the opposite direction. When the sliding plate 6 is fully open, the limiting plate limits the connecting plate 8. At this time, the sliding plate 6 cannot contact the other end of the inner wall of the guide tube 2, thus avoiding excessive opening and causing it to close.

[0020] Please refer to this carefully. Figure 3 The guide rod 9 has a screw hole at one end away from the guide tube 2, and the limiting plate has a through hole that is aligned with the screw hole. The bolt passes through the through hole and is threadedly connected to the screw hole.

[0021] In this embodiment: after the spring 10 has been used for a long time, the limiting plate can be removed by unscrewing the bolts, and then the spring 10 can be removed and replaced to maintain the spring 10's reset capability. Also, since the spring 10 is located on the outside, it will not come into direct contact with hot air, thus avoiding the problem of overheating and performance degradation of the spring 10.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A combustion-supporting ventilation structure for an incinerator, comprising an air duct (1), wherein one end of the air duct (1) is formed with an air inlet, characterized in that, The air duct (1) is equipped with a flow guiding mechanism that extends into the air nozzle. The outer circumference of the air duct (1) is integrally formed with an outwardly protruding guide tube (2). The guide tube (2) is equipped with an anti-reverse mechanism that extends into the outside of the guide tube (2). The flow guiding mechanism includes a guide cone (3). The guide cone (3) has a flow guiding groove between its cone end located on the inner wall of the air nozzle of the air duct (1) and the air nozzle of the air duct (1). The flow guiding groove gradually narrows from the inside to the outside.

2. The combustion-supporting ventilation structure for an incinerator according to claim 1, characterized in that, The flow guiding mechanism also includes an inner fixing ring (4) fixedly installed on the inner wall of the straight pipe section of the air duct (1) and an outer fixing ring (11) fixedly installed on the outer wall of the straight pipe section of the air guide cone (3). The inner fixing ring (4) and the outer fixing ring (11) are formed with flow guiding cone surfaces. The inner fixing ring (4) and the outer fixing ring (11) are fixedly installed with fixing rods (5). The cross-section of the fixing rods (5) is triangular.

3. The combustion-supporting ventilation structure for an incinerator according to claim 2, characterized in that, The anti-reverse mechanism includes a sliding plate (6) slidably installed on the outer periphery of the air guide cone (3). The outer periphery of the sliding plate (6) is located in the inner cavity of the guide tube (2). A ceramic sealing ring is installed at the contact position between the sliding plate (6) and the inner wall of the guide tube (2).

4. The combustion-supporting ventilation structure for an incinerator according to claim 3, characterized in that, The anti-reverse mechanism also includes a guide post (7) fixedly installed on one end face of the sliding plate (6). The end of the guide post (7) away from the sliding plate (6) extends through to the outside of the guide tube (2). A connecting plate (8) is fixedly installed on the end of the guide post (7) located outside the guide tube (2). A guide rod (9) fixedly connected to the outside of the guide tube (2) is slidably installed on the upper inside of the connecting plate (8). A limit plate is detachably connected to the end of the guide rod (9) away from the guide tube (2). A spring (10) sleeved with the guide rod (9) is abutted between the limit plate and the connecting plate (8).

5. The combustion-supporting ventilation structure for an incinerator according to claim 4, characterized in that, The guide rod (9) has a screw hole at one end away from the guide tube (2), and the limiting plate has a through hole that is aligned with the screw hole. The bolt passes through the through hole and is threadedly connected to the screw hole.

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