Feeding device of fluidized bed waste incineration boiler

Abstract

The utility model relates to the technical field of waste incineration boilers, in particular to a feeding device of a fluidized bed waste incineration boiler, which can avoid the problem that flame escapes towards a feeding port and ensure safe and stable operation of the boiler, and comprises a feeding pipeline connected with a waste conveying device through a non-metal expansion joint. The vertical blanking section and the inclined blanking section of the feeding pipeline are in arc transition, a reinforcing ring is arranged on the peripheral face of the feeding pipeline and connected with a hanging device, the upper portion and the lower portion of the feeding pipeline are each provided with a pipeline sealing air pipe, the tail end of the feeding pipeline is connected with a housing, and the housing is provided with a sealing air pipe. And a path of housing sealing air pipe is arranged on the housing.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage incineration boilers, in particular to a feeding device for a fluidized bed garbage incineration boiler. Background Art

[0002] With the acceleration of my country's urbanization process, the problem of garbage disposal has become increasingly prominent. The mainstream methods of garbage disposal are landfill and incineration. Compared with landfill, garbage incineration has the advantages of saving land resources, generating electricity with waste heat, and reducing environmental pollution. After the rapid development of garbage incineration boilers in recent years, circulating fluidized bed garbage incineration boilers have also become an important part of garbage disposal. Since the boiler fuel is garbage, according to the characteristics of garbage, if the feeding device of an ordinary coal-fired fluidized bed boiler is used, there will be problems such as the feed port diameter is too small, the rigidity and durability of the feed pipe are insufficient, and the flame generated by the positive pressure of the furnace escapes to the feed port. Summary of the invention

[0003] In order to solve the above-mentioned problems, the utility model provides a feeding device for a fluidized bed waste incineration boiler, which can avoid the problem of flames escaping to the feeding port and ensure the safe and stable operation of the boiler.

[0004] The technical solution is as follows: a fluidized bed waste incineration boiler feeding device, comprising a feeding pipe connected to a waste conveying device by a non-metallic expansion joint, characterized in that the vertical dropping section and the inclined dropping section of the feeding pipe are arc-shaped transitions, a reinforcement ring is provided on the outer peripheral surface of the feeding pipe, the reinforcement ring is connected to the hanging device, a pipe sealing air duct is respectively provided at the upper and lower parts of the feeding pipe, the end of the feeding pipe is connected to a cover shell, and a cover shell sealing air duct is provided on the cover shell.

[0005] It is further characterized in that an inspection door and a gate valve are provided on the feed pipeline;

[0006] The feed pipe is a rectangular tube;

[0007] The angle between the inclined blanking section of the feed pipe and the horizontal plane is 65-70°;

[0008] The pipeline sealing air duct and the housing sealing air duct both include a transverse main pipe, and the transverse main pipe is provided with air outlet pipes evenly spaced along the axial direction.

[0009] After the utility model is adopted, the vertical dropping section and the inclined dropping section with arc transition can ensure that the garbage can be smoothly put into the boiler, and the reinforcing ring is used to connect the hanging device to ensure the supporting strength of the feeding device, and the feeding sealing air is arranged on the feeding pipe and the cover shell, which can make feeding easier and can also effectively prevent the flame generated by the positive pressure of the furnace from escaping to the feeding port, thereby ensuring the safe and stable operation of the boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the front view of the structure of the utility model;

[0011] Figure 2 It is a side view of the structure of the utility model. DETAILED DESCRIPTION

[0012] See Figure 1 , Figure 2 As shown, a feeding device for a fluidized bed waste incineration boiler comprises a feeding pipe 2 connected to a waste conveying device 10 by a non-metallic expansion joint 1, the vertical drop section and the inclined drop section of the feeding pipe 2 are arc-shaped transitions, a reinforcing ring 6 is provided on the outer circumference of the feeding pipe 2, the reinforcing ring 6 is connected to a hanging device 5, a pipe sealing air duct 7 is provided at the upper and lower parts of the feeding pipe 2, the end of the feeding pipe 2 is connected to a cover 8, and a cover sealing air duct 9 is provided on the cover 8. 11 in the figure is a front wall water-cooled wall.

[0013] The feed pipeline is also provided with an inspection door 3 and a gate valve 4, which are convenient for later inspection and maintenance, and the gate valve 4 can be quickly isolated in an emergency.

[0014] The feed pipe 2 is a rectangular pipe, and the size of the rectangle can be set according to actual conditions to ensure that the pipe is unobstructed.

[0015] The inclined blanking section of the feed pipe has an angle of 65-70° with the horizontal plane and is made of corrosion-resistant, high-temperature-resistant and wear-resistant materials to ensure durability.

[0016] The pipeline sealing air duct 7 and the cover shell sealing air duct 9 both include a transverse main pipe, and the transverse main pipe is provided with air outlet ducts evenly spaced along the axial direction, so that the sealing air can be blown out evenly, achieving a better sealing effect.

Claims

1. A feeding device for a fluidized bed waste incineration boiler, comprising a feeding pipe connected to a waste conveying device by a non-metallic expansion joint, characterized in that: The vertical drop section and the inclined drop section of the feed pipe are in an arc-shaped transition. A reinforcement ring is provided on the outer peripheral surface of the feed pipe, and the reinforcement ring is connected to the hanging device. A pipe sealing air duct is respectively provided at the upper and lower parts of the feed pipe. The end of the feed pipe is connected to a cover shell, and a cover shell sealing air duct is provided on the cover shell.

2. A fluidized bed waste incineration boiler feeding device according to claim 1, characterized in that: The feed pipeline is provided with an inspection door and a gate valve.

3. The feeding device for a fluidized bed waste incineration boiler according to claim 1, characterized in that: The feed pipe is a rectangular pipe.

4. The feeding device for a fluidized bed waste incineration boiler according to claim 1, characterized in that: The angle between the inclined blanking section of the feed pipe and the horizontal plane is 65-70°.

5. The feeding device for a fluidized bed waste incineration boiler according to claim 1, characterized in that: The pipeline sealing air duct and the housing sealing air duct both include a transverse main pipe, and the transverse main pipe is provided with air outlet pipes evenly spaced along the axial direction.

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