CN-224215362-U - Wet-type scraper blade slag dragging machine slag bin capable of preventing hardening

CN224215362UCN 224215362 UCN224215362 UCN 224215362UCN-224215362-U

Abstract

The utility model provides a wet scraper slag dragging machine slag bin capable of preventing hardening, and relates to the technical field of slag dragging machine slag bin equipment. Comprises a slag bin, a compressed air purging pipeline, a material level measuring point, a vibrator, a water filtering element and a water filtering pipe flowmeter. The slag bin is internally provided with high and low material level measuring points, the middle part and the bottom are provided with purging pipelines with pneumatic control valves, the bottom is provided with a water filtering element, and the bottom is also provided with a vibrator corresponding to the discharge opening. Through accurate judgement material level of material level measurement station, sweep pipeline dredge end sediment and prevent hardening, the flow meter monitors drainage state, and the vibrator helps unloading. The problems of bottom slag hardening, material level misjudgment and the like are solved, the running stability, reliability and efficiency of the slag bin are improved, the smooth production flow is ensured, and the method is suitable for slag bin hardening prevention and efficient running scenes of a wet scraper slag dragging machine.

Inventors

REN CHENWEI
LI CHAOFAN
WANG YUANJUN
WANG JUN
Ji ni
DU MENG

Assignees

湖北能源集团鄂州发电有限公司

Dates

Publication Date: 20260508
Application Date: 20250613

Claims (10)

1. The wet scraper slag dragging machine slag bin capable of preventing hardening is characterized by comprising a slag bin, a compressed air purging pipeline, a material level measuring point, a vibrator, a water filtering element and a water filtering pipe flowmeter; The slag bin is internally provided with a high material level measuring point and a low material level measuring point, and the installation height of the high material level measuring point is higher than that of the low material level measuring point; compressed air purging pipelines are arranged at the middle part and the bottom of the slag bin, and control pneumatic valves are respectively arranged on the purging pipelines; The bottom of the slag bin is provided with a water filtering element which is connected to a drainage system through a water filtering pipe, and a water flow measuring point is arranged on the water filtering pipe; The bottom of the slag bin is provided with a vibrator, and the vibrator is arranged corresponding to the discharge opening at the bottom of the slag bin.
2. The anti-hardening wet scraper slag dragging machine slag bin according to claim 1, wherein an ultrasonic level gauge is arranged at the top of the slag bin and is used for monitoring continuous change of the level in the slag bin in real time.
3. The wet scraper slag dragging machine slag bin capable of preventing hardening according to claim 1, wherein the high material level measuring point and the low material level measuring point are material level switches respectively used for assisting in judging the early warning height and the safety height of the material level in the slag bin.
4. A slashing preventing wet scraper slag conveyor slag bin according to claim 1, wherein the central compressed air purge conduit is circumferentially disposed along the side wall of the slag bin and the purge port is inclined at 30 ° -45 ° toward the center of the slag bin.
5. The anti-hardening wet scraper slag conveyor slag bin according to claim 1, wherein the bottom compressed air purging pipeline is positioned in a slag bin cone bucket section, and the horizontal distance between the purging port and the slag bin bottom discharge port is 0.5-1 m.
6. The anti-hardening wet scraper slag conveyor slag bin according to claim 1, wherein the compressed air purging pipeline is further provided with a manual isolating valve, and the manual isolating valve is positioned between the pneumatic valve and the air source.
7. The slag bin of the wet scraper slag conveyor capable of preventing hardening according to claim 1, wherein the water filtering element is a multi-layer metal filter screen, the pore diameter of the filter screen is 2-5mm, and a guide plate is arranged below the filter screen.
8. The anti-hardening wet scraper slag conveyor slag bin according to claim 1, wherein the water flow measuring point is an electromagnetic flowmeter and is used for monitoring the drainage flow in the water filtering pipe in real time and feeding back to the control system.
9. The slag bin of the wet scraper slag conveyor capable of preventing hardening according to claim 1, wherein the vibrator is a pneumatic vibrator and is fixed on the outer side of the bottom of the slag bin through a bracket, and the vibration frequency is 50-100 times/min.
10. The slag bin of the wet scraper slag conveyor capable of preventing hardening according to claim 1, wherein a slag discharging pneumatic valve is arranged at the bottom of the slag bin and is connected with an air storage tank for instruments, and the air storage tank provides opening and closing power.

Description

Wet-type scraper blade slag dragging machine slag bin capable of preventing hardening Technical Field The utility model relates to the technical field of auxiliary tools of electric equipment, in particular to a slag bin of a wet scraper slag dragging machine for preventing hardening. Background Taking most coal-fired power plants as an example, a wet mechanical slag removing mode is adopted in a slag bin operation mode of the existing wet type scraper slag remover, in the operation, slag at the bottom of the furnace falls into a water tank at the upper part of the slag remover from a hearth through a slag well, the slag is cooled, blasted and deposited at the bottom of the water tank, gradually rises along with the movement of a conveying scraper, and drips most cooling water to enter the slag bin, and slag in the slag bin is further dehydrated through a draining filter screen pipeline. The water content of the dehydrated slag is required to be lower than 25%, and the dehydrated slag is transported to comprehensive utilization users or ash fields by adopting special dump trucks at regular intervals. In the wet mechanical deslagging process of a coal-fired power plant, the existing slag bin system has the following core defects: The traditional ultrasonic material level meter is easily interfered by the hardening wall of the inner wall of the slag bin, the actual material level cannot be accurately reflected, operators are difficult to adjust the slag dragging frequency in time, the slag bin is in a high material level state for a long time, and the extrusion hardening of bottom slag is aggravated; the bottom slag plate is hard to be linked and dredged, namely quartz SiO 2 in the bottom slag expands after absorbing water, and forms a hardening layer which cannot be broken by conventional vibration and water flushing under the action of dead weight extrusion of a slag layer and crystallization of calcium carbonate, so that a slag bin discharge opening is blocked, and even a generator set is forced to limit load due to the abnormal slag bin; the water filtering efficiency is lack of real-time monitoring, the water filtering element cannot be timely perceived when being blocked, and the water content of the bottom slag is increased to further aggravate water absorption hardening, so that vicious circulation is formed. Disclosure of utility model Aiming at the defects existing in the prior art, the utility model provides a slag bin of a wet scraper slag dragging machine for preventing hardening, which solves the problems in the prior art, realizes accurate material level monitoring, effectively prevents bottom slag hardening, ensures the normal operation of a water filtering element and smooth unloading, and adopts the following technical scheme in order to realize the purposes: A wet scraper slag dragging machine slag bin capable of preventing hardening comprises a slag bin, a compressed air purging pipeline, a material level measuring point, a vibrator, a water filtering element and a water filtering pipe flowmeter; The slag bin is internally provided with a high material level measuring point and a low material level measuring point, and the installation height of the high material level measuring point is higher than that of the low material level measuring point; compressed air purging pipelines are arranged at the middle part and the bottom of the slag bin, and control pneumatic valves are respectively arranged on the purging pipelines; The bottom of the slag bin is provided with a water filtering element which is connected to a drainage system through a water filtering pipe, and a water flow measuring point is arranged on the water filtering pipe; The bottom of the slag bin is provided with a vibrator, and the vibrator is arranged corresponding to the discharge opening at the bottom of the slag bin. Furthermore, an ultrasonic level gauge is arranged at the top of the slag bin and is used for monitoring continuous change of the level in the slag bin in real time. Furthermore, the high material level measuring point and the low material level measuring point are material level switches and are respectively used for assisting in judging the early warning height and the safety height of the material level in the slag bin. Still further, the middle compressed air purge conduit is circumferentially disposed along the slag bin sidewall with the purge port inclined 30 ° -45 ° toward the slag bin center. Furthermore, the bottom compressed air purging pipeline is positioned at the slag bin cone bucket section, and the horizontal distance between the purging port and the slag bin bottom discharge port is 0.5-1 meter. Furthermore, the compressed air purging pipeline is also provided with a manual isolating valve, and the manual isolating valve is positioned between the pneumatic valve and the air source. Furthermore, the water filtering element is a multi-layer metal filter screen, the pore diameter of the filter sc