Boiler ash conveying device for garbage treatment

Abstract

The utility model discloses a boiler ash conveying device for garbage disposal, which comprises a material conveying pipeline arranged below a slag outlet at the bottom of a boiler, a spiral conveying paddle is arranged in the material conveying pipeline, and a conveying motor is arranged at the side end of the material conveying pipeline; a spray head is arranged at a feeding hole of the conveying pipeline, the spray head is connected to the water tank through a water spray pipe, and a pump machine is arranged on the water spray pipe; a discharging pipeline is arranged at the discharging end of the bottom of the conveying pipeline, a sedimentation tank is connected to the discharging pipeline, a liquid level sensor is arranged in the sedimentation tank, and an electromagnetic valve is arranged at the feeding end of the sedimentation tank; the conveying device further comprises a PLC used for controlling ash conveying. The high-temperature ash generated by garbage incineration of the boiler is automatically conveyed and subjected to precipitation treatment, accumulation of the boiler ash is avoided, the combustion efficiency of the boiler is improved, meanwhile, heat in the high-temperature ash can be recycled in the conveying process, and the energy utilization rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage treatment, and more specifically to a boiler ash conveying device for garbage treatment. Background Art

[0002] At present, most garbage disposal uses boiler incineration to treat domestic garbage through high-temperature oxidation. During the boiler incineration process, the combustible waste in the domestic garbage is converted into harmless substances such as carbon dioxide and water, and the ash and slag after incineration is only less than 20% of the original volume of the domestic garbage, greatly reducing the amount of solid waste.

[0003] During the process of garbage incineration, a large amount of ash will be generated. If the ash at the bottom of the boiler is not handled in time, it is easy to block the bottom of the boiler, resulting in incomplete combustion of the boiler and affecting the normal operation of the garbage incineration boiler. In addition, the ash of the existing boiler is cleaned by manual shoveling. After the ash accumulates to a certain extent, the ash accumulated at the bottom of the boiler is manually controlled to be shoveled and transported to the slag truck. Due to the high temperature of the ash during the combustion process, a large amount of heat will be released into the air during the shoveling and transportation of the slag, affecting the surrounding environment, and it is also easy to cause burns to personnel, and it will also cause heat waste. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a boiler ash conveying device for garbage disposal, which can automatically convey the ash from boiler combustion, avoid the accumulation of boiler ash, improve the boiler combustion efficiency, and reuse the heat of the ash.

[0005] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0006] A boiler ash conveying device for garbage disposal comprises a conveying pipeline arranged below a slag outlet at the bottom of a boiler, a spiral conveying blade for conveying ash is arranged in the conveying pipeline, and a conveying motor for driving the spiral conveying blade to rotate is arranged at the side end of the conveying pipeline; a nozzle for spraying water to the ash is arranged at the feed inlet of the conveying pipeline, the nozzle is connected to a water tank through a water spraying pipe, and a pump for conveying water in the water tank into the nozzle is arranged on the water spraying pipe; a discharge pipeline is arranged at the discharge end at the bottom of the conveying pipeline, and a plurality of sedimentation tanks for conveying ash water in and out of the sedimentation are connected to the discharge pipeline, a liquid level sensor is arranged in the sedimentation tank, and a solenoid valve for controlling the feeding into the sedimentation tank is arranged at the feed end of the sedimentation tank; the conveying device also comprises a PLC controller for controlling the ash conveying, the output end of the liquid level sensor is connected to the input end of the PLC controller, and the output end of the PLC controller is respectively connected to the input ends of the conveying motor, the pump and the solenoid valve.

[0007] To further optimize the technical solution, a heat exchange tube is arranged on the feed pipeline for exchanging heat with high-temperature ash in the feed pipeline. The heat exchange tube is connected to a hot water tank through a circulation pipeline. A circulation pump is arranged on the circulation pipeline for circulating water between the hot water tank and the heat exchange tube. The input end of the circulation pump is connected to the output end of the PLC controller.

[0008] To further optimize the technical solution, the outer side of the heat exchange tube is provided with a heat insulating layer for heat insulation.

[0009] To further optimize the technical solution, a timer for measuring sedimentation time is provided on the sedimentation tank, and the input end of the timer is connected to the output end of the PLC controller.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0011] The utility model provides a boiler ash conveying device for garbage disposal, which automatically conveys high-temperature ash produced by incinerating garbage in the boiler and performs sedimentation treatment, thereby avoiding the accumulation of boiler ash and improving boiler combustion efficiency. At the same time, during the conveying process, the heat in the high-temperature ash can be recovered and reused, thereby improving the utilization rate of energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model.

[0013] Among them: 1. Boiler, 2. Feed pipeline, 3. Screw conveyor blades, 4. Conveying motor, 5. Heat exchange tube, 6. Circulation pipeline, 7. Circulation pump, 8. Hot water tank, 9. Thermal insulation layer, 10. Discharge pipeline, 11. Sedimentation tank, 12. Solenoid valve, 13. Timer, 14. Liquid level sensor, 15. Nozzle, 16 Water tank, 17. Pump. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] A boiler ash conveying device for garbage disposal, combined with Figure 1 As shown, it includes a feed pipe 2 and a PLC controller. The feed pipe 2 is arranged below the slag outlet at the bottom of the boiler 1, and is used to transport the ash generated when the boiler burns garbage. A spiral conveying blade 3 is arranged in the feed pipe 2, and a conveying motor 4 is arranged at the side end of the feed pipe 2 to drive the spiral conveying blade to rotate, drive the ash to be transported forward, thereby realizing the transportation of the ash; the PLC controller is used to control the ash transportation, and the output end of the PLC controller is connected to the input end of the conveying motor.

[0016] A nozzle 15 is provided at the feed inlet of the feed pipe 2 for spraying water onto the ash discharged from the boiler. The nozzle 15 is connected to a water tank 16 through a water spray pipe. A pump 17 is provided on the water spray pipe for delivering water in the water tank into the nozzle for spraying. The input end of the pump 17 is connected to the output end of the PLC controller.

[0017] A heat exchange pipe 5 is arranged around the feed pipeline 2 for exchanging heat with the high-temperature ash in the feed pipeline. The heat exchange pipe 5 is connected to a hot water tank 8 through a circulation pipe 6. A circulation pump 7 is arranged on the circulation pipe 6 for circulating the water in the hot water tank and the heat exchange pipe. The input end of the circulation pump is connected to the output end of the PLC controller. The water in the hot water tank exchanges heat with the water in the heat exchange pipe. The hot water exchanged in the hot water tank can be used for residents' water use, thereby saving the heat consumption of the ash.

[0018] The outer side of the heat exchange tube 5 is wrapped with a heat insulation layer 9 for heat insulation to prevent the heat of the high-temperature ash in the conveying pipeline from being dissipated and to prevent surrounding personnel from being scalded.

[0019] A discharge pipe 10 is provided at the discharge end at the bottom of the conveying pipe 2, and a plurality of sedimentation tanks 11 are connected to the discharge pipe 10 for settling the ash water transported therefrom. A liquid level sensor 14 is provided inside the sedimentation tank 11 for detecting the liquid level information in the sedimentation tank. A solenoid valve 12 is provided at the feed end of the sedimentation tank 11 for controlling the feed into the sedimentation tank. The output end of the liquid level sensor is connected to the input end of the PLC controller, and the output end of the PLC controller is connected to the input end of the solenoid valve. However, after the liquid level sensor detects that the sedimentation tank is full of ash water, the solenoid valve at the feed end of the sedimentation tank is closed, and the feed to the sedimentation tank is stopped. The sedimentation tank starts to settle the ash water and feeds the next sedimentation tank.

[0020] A timer 13 is provided on the sedimentation tank 11 for measuring sedimentation time, and an input end of the timer is connected to an output end of the PLC controller.

[0021] When the boiler incinerates garbage, a large amount of ash will be accumulated at the bottom of the boiler, enter the feed pipe, and form ash slurry through the nozzle spraying water. It is transported forward under the action of the rotating spiral conveying blades. The transported ash slurry enters the sedimentation tank for sedimentation. During the transportation process, the heat of the ash slurry is exchanged through the heat exchange pipe, and the heat in the high-temperature ash is reused to avoid heat waste and improve energy utilization.

Claims

1. A boiler ash conveying device for garbage disposal, characterized in that: The invention comprises a feed pipe (2) arranged below a slag outlet at the bottom of a boiler (1), wherein a spiral conveying blade (3) for conveying ash and slag is arranged in the feed pipe (2), and a conveying motor (4) for driving the spiral conveying blade to rotate is arranged at the side end of the feed pipe (2); a nozzle (15) for spraying water on the ash and slag is arranged at the feed inlet of the feed pipe (2), the nozzle (15) is connected to a water tank (16) through a water spraying pipe, and a pump (17) for conveying water in the water tank into the nozzle; the outlet at the bottom of the feed pipe (2) is provided with a pump (17) for conveying water in the water tank into the nozzle; A discharge pipe (10) is provided at the material end, and the discharge pipe (10) is connected to a plurality of sedimentation tanks (11) for conveying ash water in and out for sedimentation, a liquid level sensor (14) is provided in the sedimentation tank (11), and a solenoid valve (12) for controlling the feeding into the sedimentation tank is provided at the feed end of the sedimentation tank; the conveying device also includes a PLC controller for controlling the ash conveying, the output end of the liquid level sensor is connected to the input end of the PLC controller, and the output end of the PLC controller is respectively connected to the input ends of the conveying motor, the pump and the solenoid valve.

2. A boiler ash conveying device for garbage disposal according to claim 1, characterized in that: The feed pipe (2) is provided with a heat exchange tube (5) for exchanging heat with high-temperature ash in the feed pipe. The heat exchange tube (5) is connected to a hot water tank (8) via a circulation pipe (6). The circulation pipe (6) is provided with a circulation pump (7) for circulating water between the hot water tank and the heat exchange tube. The input end of the circulation pump is connected to the output end of the PLC controller.

3. A boiler ash conveying device for garbage disposal according to claim 2, characterized in that: The outer side of the heat exchange tube (5) is provided with a heat insulation layer (9) for heat insulation.

4. The boiler ash conveying device for garbage disposal according to claim 1, characterized in that: The sedimentation tank (11) is provided with a timer (13) for measuring sedimentation time, and the input end of the timer is connected to the output end of the PLC controller.

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