Cleaning device for automatically cleaning accumulated coal below coal conveying belt roller

Abstract

The utility model relates to a cleaning device for automatically cleaning accumulated coal below a roller of a coal conveying belt, which comprises a cleaning water pipe, a cleaning water inlet pipe, a cleaning water outlet pipe and a cleaning water outlet pipe, the cleaning water pipe is provided with a nozzle obliquely downwards below the belt, and the nozzle is used for flushing accumulated coal below the roller to the outer side. The utility model has the beneficial effects that the accumulated coal below the roller is flushed to the outer side far away from the belt through the nozzle, so that the accumulated coal on the rolling ground of the belt is effectively reduced, the hidden danger of fire caused by friction between the accumulated coal below the roller and the belt is eliminated, and the device has the characteristics of environmental pollution treatment, fire hidden danger elimination and no manual work.

Description

Technical Field

[0001] The utility model relates to the field of belt conveyors, in particular to a cleaning device for automatically cleaning the coal accumulation under the roller of a coal conveying belt. Background Art

[0002] The coal conveying device realizes coal conveying through the cooperation of a roller and a belt. Due to the large amount of coal received, unloaded and fed into the bin, coal frequently accumulates under the roller of the belt conveyor. After the belt starts, the accumulated coal under it is rolled up, which not only greatly deteriorates the sanitary environment and affects the environment, but also when the accumulated coal reaches a certain height, it will cause a fire due to friction with the belt, posing a fire hazard.

[0003] At present, the coal accumulation under the roller of the belt conveyor is cleaned by the cleaning personnel every day using a water pipe to flush or a shovel. Due to human inertia, it often happens that the coal accumulation under the roller is not cleaned in time. Therefore, there is an urgent need for a cleaning device that can automatically clean the coal accumulation under the roller of the coal conveying belt. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a cleaning device for automatically cleaning the coal accumulation under the roller of a coal conveying belt.

[0005] This cleaning device for automatically cleaning the coal accumulation under the roller of a coal conveying belt includes: a cleaning water pipe, one end of the cleaning water pipe is the cleaning water input end, and the other end extends under the belt. Both ends of the belt are wound around the roller; the cleaning water pipe is provided with nozzles obliquely downward under the belt, and the nozzles are used to wash the coal accumulation under the roller to the outside.

[0006] Preferably, the end of the cleaning water pipe extending under the belt is arranged under one side of the roller on the side for controlling the belt to be wound from above to below, and the projection of the orientation of the nozzle on the horizontal plane is opposite to the running direction of the lower belt.

[0007] Preferably, an electromagnetic valve is arranged on the cleaning water pipe for controlling the nozzle to spray water.

[0008] Preferably, the end of the cleaning water pipe extending under the belt is parallel to the axial direction of the roller, and several nozzles are connected to the cleaning water pipe at intervals.

[0009] Preferably, the electromagnetic valve and the roller are started synchronously.

[0010] The beneficial effects of the utility model are as follows:

[0011] 1) A device for automatically cleaning the coal accumulation under the roller of a coal conveying belt is designed, which is applicable to cleaning the coal accumulation under the roller during the coal loading process of all belt conveyors. The coal accumulation under the roller is washed to the outside away from the belt through the nozzles, effectively reducing the ground powder rolled up by the belt and eliminating the hidden danger of fire caused by the friction between the coal accumulation under the roller and the belt, and having the characteristics of treating environmental pollution, eliminating fire hazards and avoiding manual labor.

[0012] 2) The solenoid valve and the drum of the present utility model are designed to start synchronously. During the process of the belt conveyor unloading coal, the cleaning device under the drum is automatically started in connection, which can timely and effectively reduce the accumulated powder on the belt-rolled area, play a role in environmental governance, and at the same time eliminate the hidden danger of fire caused by the friction between the accumulated coal under the drum and the belt. Description of the Drawings

[0013] Figure 1 It is a schematic diagram of the cleaning device seen from the bottom looking up under the coal conveying belt drum.

[0014] Description of the reference numerals: belt 1, drum 2, cleaning water pipe 3, solenoid valve 4, nozzle 5. Detailed Embodiments

[0015] The following further describes the present utility model in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present utility model. It should be noted that for those of ordinary skill in the technical field, without departing from the principle of the present utility model, several modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0016] As an embodiment, as Figure 1 shown, for this cleaning device used for automatically cleaning the accumulated coal under the coal conveying belt drum, both ends of the belt 1 are wound around the drum 2. One drum 2 winds the belt 1 from above to below, and the other drum 2 winds the belt 1 from below to above.

[0017] The cleaning device includes: a cleaning water pipe 3. One end of the cleaning water pipe 3 is the cleaning water input end, and the other end extends to the lower side of the belt 1. The end of the cleaning water pipe 3 extending to the lower side of the belt 1 is axially parallel to the drum 2, and several nozzles 5 are connected to the cleaning water pipe 3 at intervals. As Figure 1 shown, among which Figure 1 is the cleaning device seen from the bottom looking up under the coal conveying belt drum.

[0018] The end of the cleaning water pipe 3 extending to the lower side of the belt 1 is arranged under one side drum 2 used to control the belt 1 to be wound from above to below, and the orientation of the nozzle 5 is obliquely downward. Specifically, the projection of the orientation of the nozzle 5 on the horizontal plane is opposite to the running direction of the lower belt 1, that is, the nozzle 5 flushes the accumulated coal under the drum 2 on the side where the coal is most likely to accumulate outwards, rather than towards the area where the belt 1 passes, completely avoiding the possibility of the accumulated coal being rolled up by the belt 1.

[0019] Furthermore, the end of the cleaning water pipe 3 extending to the lower side of the belt 1 is not arranged directly under the drum 2, but is offset a certain distance towards the inner side of the coal conveying belt device, so that the range of the oblique flushing can cover a certain range where the drum 2 is located, ensuring the flushing effect.

[0020] A solenoid valve 4 is provided on the cleaning water pipe 3 to control the opening and closing of the nozzle 5 for spraying water. Before the belt conveyor starts, the solenoid valve 4 is closed, and the coal accumulation cleaning device below the roller 2 is in a shutdown state. After the belt conveyor starts, the solenoid valve 4 is interlocked and opened, and the cleaning water is introduced into the cleaning device below the roller 2, and the cleaning device operates automatically.

[0021] In this embodiment, this cleaning device for automatically cleaning the coal accumulation below the coal conveying belt roller is used in the existing construction site. Specifically, the coal conveying system of a certain power plant with 2×660MW consists of a total of 13 belt conveyors from #0 to #7. The belt conveyor model is DTⅡ, the belt width is 1200mm, the rated output is 1200t / h, and it was installed and completed in July 2017. The control method is DCS control. When the two units are operating at full load, about 20,000 tons of coal are unloaded and fed into the silo every day. Due to the large amount of coal unloaded and fed into the silo, coal frequently accumulates below the belt conveyor roller. This cleaning device sprays cleaning water onto the ground through the nozzle 5, wets the pulverized coal and makes it fall to the ground, and is washed away together with the coal accumulation below the roller 2, effectively reducing the ground dust powder rolled up by the belt 1, eliminating the hidden danger of fire caused by the friction between the coal accumulation below the roller 2 and the belt 1, and reducing the cost of manual cleaning.

Claims

1. A cleaning device for automatically cleaning coal deposits under a coal conveyor belt roller, characterized in that: include: A cleaning water pipe, one end of which is the cleaning water input end, and the other end extends to under the belt, and both ends of the belt are wound on the drum; the cleaning water pipe is provided with a nozzle obliquely downward under the belt, and the nozzle is used to flush the accumulated coal under the drum to the outside.

2. The cleaning device for automatically cleaning the coal deposited under the coal conveyor belt roller according to claim 1 is characterized in that: The cleaning water pipe extends to one end below the belt and is arranged below one side of a roller for controlling the belt to roll from the top to the bottom. The projection of the nozzle direction on the horizontal plane is opposite to the running direction of the belt below.

3. The cleaning device for automatically cleaning the coal deposited under the coal conveyor belt roller according to claim 1 is characterized in that: A solenoid valve is provided on the cleaning water pipe to control the water spraying from the nozzle.

4. The cleaning device for automatically cleaning the coal deposited under the coal conveyor belt roller according to claim 1 is characterized in that: The cleaning water pipe extends to one end below the belt and is parallel to the axis of the roller. A plurality of nozzles are connected to the cleaning water pipe at intervals.

5. The cleaning device for automatically cleaning the coal deposited under the coal conveyor belt roller according to claim 3 is characterized in that: The solenoid valve and the drum start synchronously.

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