A burner with an opening and closing isolation door

Abstract

A burner with an openable and closed isolating door comprises a burner shell and a burner inner core. An openable and closed isolating door sealing tube is provided at the outlet of the burner shell, an openable and closed isolating door is provided on the openable and closed isolating door sealing tube, and a flip mechanism is provided on the openable and closed isolating door; a central duct is provided at the rear of the burner shell, and an advance and retreat actuator is provided on the central duct; a purge air inlet pipe is provided below the openable and closed isolating door sealing tube, a purge air chamber is provided at the outlet of the purge air inlet pipe, and a purge hole is provided between the openable and closed isolating door sealing tube and the burner nozzle pipe. When the operation stops, the burner inner core automatically retreats to the inside of the burner wind shell under the action of the actuator, and the openable and closed isolating door built into the burner shell flips downward under the action of the actuator, covers the burner nozzle pipe and seals it, so that the burner is completely isolated from the furnace, and the burner inner core is not affected by the flame radiation heat in the furnace, and is not affected by the positive pressure fluctuation in the furnace, thereby extending the service life.

Description

Technical Field

[0001] The invention relates to a burner with an openable and closable insulating door, and is particularly suitable for a garbage incinerator whose inner core is not affected by high-temperature radiation from a furnace. Background Art

[0002] The burner used in the garbage incinerator needs to be purged and cooled by cooling air after the burner stops running, so as to protect the inner core of the burner from the high temperature radiation of the furnace and the ash from entering the burner due to the positive pressure fluctuation of the furnace, which may cause corrosion to the inner core of the burner. The use of cooling air often causes the furnace temperature to drop, which affects the incineration of garbage. In order to avoid cooling the furnace, the boiler operator is generally reluctant to use cooling air. Because the burner loses the protection of cooling air, its service life is greatly reduced. Summary of the invention

[0003] Technical problem: The purpose of the present invention is to overcome the shortcomings of the prior art and provide a burner with an openable and closeable isolation door which has a simple structure, is easy to operate and has good use effect.

[0004] Technical solution: A burner with an openable and closeable isolation door of the present invention comprises a burner shell, a burner nozzle pipe arranged at the front of the burner shell, a burner inner core is arranged in the burner shell, and a burner air inlet is arranged on one side of the burner shell, characterized in that: an openable and closeable isolation door sealing tube connected to the burner nozzle pipe is arranged at the outlet of the burner shell, one end of the inlet of the openable and closeable isolation door sealing tube is an inclined surface, an openable and closeable isolation door is arranged at one end of the inclined surface of the openable and closeable isolation door sealing tube, and a flip mechanism is arranged on the openable and closeable isolation door; a central conduit connecting the advance and retreat of the burner inner core is arranged at the rear of the burner shell, and the central conduit is on the same axial line as the openable and closeable isolation door sealing tube and the burner nozzle pipe, and the central conduit is on the same axial line as the openable and closeable isolation door sealing tube and the burner nozzle pipe. An actuator for controlling the advance and retreat of the central catheter is arranged above the cardiac catheter; the diameter of the sealing tube of the open and close type isolation door is smaller than the diameter of the burner nozzle tube; a cleaning air inlet tube connected to the air source is arranged below the sealing tube of the open and close type isolation door; a cleaning air chamber is arranged at the outlet of the cleaning air inlet tube; a plurality of cleaning holes communicating with the cleaning air chamber are arranged between the sealing tube of the open and close type isolation door and the burner nozzle tube; the cleaning air chamber is supplied with air through the cleaning air inlet tube; when the burner stops running, the inner core of the burner automatically retreats into the interior of the burner housing under the action of the advance and retreat actuator; after the inner core of the burner retreats into place, the built-in open and close type isolation door in the burner housing flips downward under the action of the flip mechanism to cover and seal the sealing tube of the open and close type isolation door.

[0005] The flipping mechanism includes a connecting rod, a flipping actuator, a flipping actuator mounting flange, a connecting rod connecting shaft, an open and close isolation door seal and an open and close isolation door flipping shaft. One end of the connecting rod is hinged on a boss in the middle of the open and close isolation door, and the other end of the connecting rod is hinged to the telescopic shaft of the flipping actuator via the connecting rod connecting shaft; one end of the open and close isolation door flipping shaft is hinged on the inner wall of the burner housing, and the other end of the open and close isolation door flipping shaft is connected to the open and close isolation door. The open and close isolation door seal is arranged on the contact surface between the open and close isolation door and the open and close isolation door sealing tube.

[0006] The advance and retreat actuator includes a bracket, a splint and a pneumatic cylinder or a hydraulic cylinder. One end of the bracket is arranged on the burner housing and is parallel to the central duct. The other end of the bracket is connected to the pneumatic cylinder or the hydraulic cylinder. The splint is fixed to the rear of the central duct. The top of the splint is vertically connected to the piston rod of the pneumatic cylinder or the hydraulic cylinder. The central duct is driven forward or backward as the piston rod of the pneumatic cylinder or the hydraulic cylinder is extended and retracted.

[0007] The diameter of the openable and closed isolating door sealing tube is 0.5 to 0.9 times the diameter of the burner nozzle tube 1 .

[0008] The angle between the inclined surface at one end of the sealing pipe inlet of the openable and closed isolation door and the vertical surface is 5 to 60 degrees.

[0009] The multiple cleaning holes are evenly distributed along the circumference of the burner nozzle pipe.

[0010] The plurality of cleaning holes are circular or waist-shaped holes, and the equivalent diameter of the holes is 10 to 20 mm.

[0011] The internal cleaning wind velocity of the multiple cleaning holes is 10 to 20 m / s.

[0012] The angle range of the open and close insulating door when flipped downward under the action of the flip mechanism is from 0° horizontally to 85° downwardly.

[0013] There is a clearance fit between the opening and closing type insulating door turning shaft and the opening and closing type insulating door.

[0014] Beneficial effect: Due to the adoption of the above technical scheme, the burner of the present invention can be completely isolated from the furnace, the inner core of the burner is not affected by the flame radiation heat in the furnace, and is not affected by the positive pressure fluctuation in the furnace, and the burner has a long service life. When the burner stops running, the inner core of the burner can automatically retreat to the inside of the burner wind shell under the action of the actuator. After the inner core of the burner retreats to its position, the open and close isolation door built into the burner shell flips downward under the action of the actuator, and the seal of the closed isolation door is squeezed, completely covering the burner nozzle pipe to achieve complete sealing. At this time, as needed, the cleaning air can be introduced through the cleaning air inlet pipe, and the cleaning air is ejected through the cleaning hole and sprayed into the furnace along the inner wall of the burner nozzle pipe to prevent ash accumulation in the burner nozzle pipe and cool the burner nozzle pipe. Since only the inner wall of the burner nozzle pipe is circumferentially ventilated, the required cleaning air volume is very small, less than 10% of the rated air volume of the burner, and basically will not affect the furnace temperature. Thereby, the protection of the burner is achieved without affecting the normal operation of the incinerator. It has a simple structure, convenient operation, good use effect, and has wide practicality in this technical field. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the openable and closeable insulating door of the present invention in a closed state.

[0016] Figure 2 It is a schematic diagram of the structure of the openable and closeable insulating door of the present invention in a closed state viewed from above.

[0017] Figure 3 It is a schematic diagram of the main structure of the open and close insulating door of the present invention in the open state.

[0018] In the figure: In the figure: 1. burner nozzle pipe, 2. burner shell, 3. open and close isolation door, 4. connecting rod, 5. flip actuator, 6. flip actuator mounting flange, 7. burner inner core, 8. center duct, 9. bracket, 10. splint, 11. pneumatic cylinder or hydraulic cylinder, 12. burner air inlet, 13. connecting rod connecting shaft, 14. open and close isolation door seal, 15. open and close isolation door sealing tube, 16. cleaning air inlet pipe, 17. cleaning air chamber, 18. cleaning hole, 19. open and close isolation door flip axis. DETAILED DESCRIPTION

[0019] An embodiment of the present invention is further described below in conjunction with the accompanying drawings:

[0020] like Figure 1As shown, the burner with an openable and closeable insulating door of the present invention comprises a burner housing 2, a burner nozzle pipe 1 arranged at the front of the burner housing 2, a burner inner core 7 is arranged in the burner housing 2, and a burner air inlet 12 is arranged on one side of the burner housing 2, and is characterized in that: an openable and closeable insulating door sealing tube 15 connected to the burner nozzle pipe 1 is arranged at the outlet of the burner housing 2, one end of the inlet of the openable and closeable insulating door sealing tube 15 is an inclined surface, and an openable and closeable insulating door 3 is arranged at one end of the inclined surface of the openable and closeable insulating door sealing tube 15, and the openable and closeable insulating door 3 is flipped downward at an angle of 0° horizontally to 85° downwardly under the action of the flipping mechanism. The open and close insulating door 3 is provided with a flip mechanism; the rear part of the burner housing 2 is provided with a central duct 8 connecting the advance and retreat of the burner inner core 7, the central duct 8 is on the same axial line as the open and close insulating door sealing tube 15 and the burner nozzle tube 1, and an actuator for controlling the advance and retreat of the central duct 8 is provided above the central duct 8; the diameter of the open and close insulating door sealing tube 15 is smaller than the diameter of the burner nozzle tube 1, a purge air inlet pipe 16 connected to the air source is provided below the open and close insulating door sealing tube 15, a purge air chamber 17 is provided at the outlet of the purge air inlet pipe 16, and a plurality of cleaning holes 18 communicating with the purge air chamber 17 are provided between the open and close insulating door sealing tube 15 and the burner nozzle tube 1, the plurality of cleaning holes 18 are evenly distributed along the circumference of the burner nozzle tube 1, the plurality of cleaning holes 18 are circular or waist-shaped holes, the equivalent diameter of the hole is 10-20 mm, and the internal purge air flow rate of the plurality of cleaning holes 18 is 10-20 m / s. The purge air chamber 17 supplies air through the purge air inlet pipe 16; when the burner stops running, the burner core 7 automatically retreats into the burner housing 2 under the action of the advance and retreat actuator. After the burner core 7 retreats to its position, the open and close isolation door 3 built into the burner housing 2 flips downward under the action of the flip mechanism, covering and sealing the open and close isolation door sealing tube 15. The diameter of the open and close isolation door sealing tube 15 is 0.5 to 0.9 times the diameter of the burner nozzle pipe 1. The angle between the inclined surface at one end of the inlet of the open and close isolation door sealing tube 15 and the vertical surface is 5 to 60 degrees.

[0021] The flip mechanism includes a connecting rod 4, a flip actuator 5, a flip actuator mounting flange 6, a connecting rod connecting shaft 13, an open and close insulation door seal 14 and an open and close insulation door flip shaft 19. One end of the connecting rod 4 is hinged on the boss in the middle of the open and close insulation door 3, and the other end of the connecting rod 4 is hinged with the telescopic shaft of the flip actuator 5 through the connecting rod connecting shaft 13. The flip actuator 5 is installed above the burner housing 2 through the flip actuator flange 6; one end of the open and close insulation door flip shaft 19 is hinged on the inner wall of the burner housing 2, and the other end of the open and close insulation door flip shaft 19 is connected to the open and close insulation door 3, and the open and close insulation door flip shaft 19 and the open and close insulation door 3 are clearance-matched. The open and close insulation door seal 14 is arranged on the contact surface between the open and close insulation door 3 and the open and close insulation door sealing tube 15. The advance and retreat actuator includes a bracket 9, a clamp 10 and a pneumatic cylinder or a hydraulic cylinder 11. One end of the bracket 9 is arranged on the burner housing 2 and is parallel to the central duct 8. The other end of the bracket 9 is connected to the pneumatic cylinder or the hydraulic cylinder 11. The clamp 10 is fixed to the rear of the central duct 8. The top of the clamp 10 is vertically connected to the piston rod of the pneumatic cylinder or the hydraulic cylinder 11, and the central duct 8 is driven forward or backward as the piston rod of the pneumatic cylinder or the hydraulic cylinder 11 is extended and retracted.

[0022] The burner nozzle pipe 1 is connected to the outside of the burner housing 2, the open and close isolation door sealing pipe 15 is connected to the inside of the burner housing 2, and the burner nozzle pipe 1 is coaxially connected to the open and close isolation door sealing pipe 15. Above the open and close isolation door sealing pipe 15 is the open and close isolation door 3 connected to the burner housing 2 through the open and close isolation door flip shaft 19. Above the open and close isolation door 3 is the flip actuator 5 connected through the connecting rod 4, and the actuator is connected to the top of the burner housing 2 through the mounting flange. The burner inner core 7 is arranged on the burner axis, and the burner inner core 7 is connected to the pneumatic cylinder or hydraulic cylinder through a clamping plate. The pneumatic cylinder or hydraulic cylinder is connected to the burner housing through a mounting bracket.

[0023] The diameter of the open and close type isolation door sealing tube is smaller than the diameter of the burner nozzle tube. A cleaning hole is arranged between the open and close type isolation door sealing tube and the burner nozzle tube. The cleaning hole is connected to the cleaning air chamber. The cleaning air chamber is supplied with air through the cleaning air inlet pipe.

[0024] When the burner stops running, the burner core 7 can automatically return to the inside of the burner housing 2 under the action of the pneumatic cylinder or the hydraulic cylinder. After the burner core 7 is returned, the open-closed isolation door 3 automatically turns downward along the turning axis of the open-closed isolation door 3 under the action of the turning mechanism until the open-closed isolation door 3 is completely fitted with the open-closed isolation door sealing tube 15. When the burner needs to be put into operation, the open-closed isolation door 3 automatically turns upward along the turning axis of the open-closed isolation door 3 to a horizontal position under the action of the turning mechanism, and the burner core 7 automatically advances to the burner nozzle pipe under the action of the pneumatic cylinder or the hydraulic cylinder and is in the operating position.

Claims

1. A burner with an openable and closable isolation door, comprising a burner housing, a burner nozzle pipe arranged at the front of the burner housing, a burner inner core arranged in the burner housing, and a burner air inlet arranged on one side of the burner housing, characterized in that: An openable and closed isolating door sealing tube connected to the burner nozzle pipe is provided at the outlet of the burner shell, one end of the inlet of the openable and closed isolating door sealing tube is an inclined surface, an openable and closed isolating door is provided at one end of the inclined surface of the openable and closed isolating door sealing tube, and a flip mechanism is provided on the openable and closed isolating door; a central conduit for connecting the advance and retreat of the burner inner core is provided at the rear of the burner shell, the central conduit is on the same axial line as the openable and closed isolating door sealing tube and the burner nozzle pipe, and an actuator for controlling the advance and retreat of the central conduit is provided above the central conduit; the diameter of the openable and closed isolating door sealing tube is smaller than that of the burner nozzle pipe The diameter of the open and close type isolation door sealing tube is provided below the open and close type isolation door sealing tube, a cleaning air inlet pipe connected to the air source is provided at the outlet of the cleaning air inlet pipe, a plurality of cleaning holes communicating with the cleaning air chamber are provided between the open and close type isolation door sealing tube and the burner nozzle tube, and the cleaning air chamber is supplied with air through the cleaning air inlet pipe; when the burner stops running, the burner inner core automatically retreats into the burner housing under the action of the advance and retreat actuator, and after the burner inner core retreats into place, the open and close type isolation door built into the burner housing is flipped downward under the action of the flip mechanism to cover and seal the open and close type isolation door sealing tube; The flip mechanism includes a connecting rod, a flip actuator, a flip actuator mounting flange, a connecting rod connecting shaft, an open and close insulation door seal and an open and close insulation door flip shaft, one end of the connecting rod is hinged on a boss in the middle of the open and close insulation door, and the other end of the connecting rod is hinged with the telescopic shaft of the flip actuator via the connecting rod connecting shaft; one end of the open and close insulation door flip shaft is hinged on the inner wall of the burner housing, and the other end of the open and close insulation door flip shaft is connected to the open and close insulation door, and the open and close insulation door seal is arranged on the contact surface between the open and close insulation door and the open and close insulation door sealing tube; The advance and retreat actuator includes a bracket, a splint and a pneumatic cylinder or a hydraulic cylinder. One end of the bracket is arranged on the burner housing and is parallel to the central duct. The other end of the bracket is connected to the pneumatic cylinder or the hydraulic cylinder. The splint is fixed to the rear of the central duct. The top of the splint is vertically connected to the piston rod of the pneumatic cylinder or the hydraulic cylinder. The central duct is driven forward or backward as the piston rod of the pneumatic cylinder or the hydraulic cylinder is extended and retracted.

2. A burner with an openable and closable isolation door according to claim 1, characterized in that: The diameter of the sealing tube of the openable and closed isolating door is 0.5 to 0.9 times the diameter of the burner nozzle tube.

3. A burner with an openable and closable isolation door according to claim 1, characterized in that: The angle between the inclined surface at one end of the sealing pipe inlet of the openable and closed isolation door and the vertical surface is 5-60 degrees.

4. A burner with an openable and closable isolation door according to claim 1, characterized in that: The multiple cleaning holes are evenly distributed along the circumference of the burner nozzle pipe.

5. A burner with an openable and closable isolation door according to claim 1 or 4, characterized in that: The plurality of cleaning holes are circular or waist-shaped holes, and the equivalent diameter of the cleaning holes is 10-20 mm.

6. A burner with an openable and closable isolation door according to claim 1 or 4, characterized in that: The internal cleaning air velocity of the multiple cleaning holes is 10~20m / s.

7. The burner with an openable and closable isolation door according to claim 1, characterized in that: The angle range of the open and close insulating door when flipped downward under the action of the flip mechanism is from 0° horizontally to 85° downwardly.

8. The burner with an openable and closable isolation door according to claim 1, characterized in that: There is a clearance fit between the opening and closing type insulating door turning shaft and the opening and closing type insulating door.

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