Device for cleaning accumulated coal on two sides of cleaning chain

Abstract

The utility model belongs to the technical field of cleaning chains, and particularly relates to a cleaning device for accumulated coal on two sides of a cleaning chain, which comprises a raw coal bunker, a belt weighing type coal feeder arranged at the lower end of the raw coal bunker, the cleaning chain arranged at the lower end of the belt weighing type coal feeder, a coal dropping pipe arranged at the right end of the cleaning chain, a hearth arranged at the right end of the coal dropping pipe, and a coal discharging pipe arranged at the right end of the hearth. Slag is arranged on the lower side of the sweeping chain, a scraper is arranged on an output chain of the sweeping chain, and an auxiliary mechanism is arranged on the scraper. According to the scheme, when the belt weighing type coal feeder is shut down and overhauled, the part which cannot be scraped below the sweeping chain is fully paved with the boiler slag, and under the action of the boiler slag, falling pulverized coal can be blocked, so that the pulverized coal can be fully scraped away by the sweeping chain and fed into a hearth; and the problem that coal powder on the lower side is prone to spontaneous combustion in the running and stopping period of the belt weighing type coal feeder is reduced and even completely eradicated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of cleaning chain, and specifically relates to coal cleaning device of both sides of cleaning chain. BACKGROUND

[0002] The belt weighing type coal feeder is an intelligent conveying equipment for detecting the weight of materials by weight meters, and is mainly used for accurately metering and controlling the feeding of coal and other materials. The belt weighing type coal feeder is widely applied to the coal, mine, building material, metallurgy and other industries, and is particularly suitable for the equipment and machines in the pulverizing system of the circulating fluidized bed boiler of the thermal power plant, and various scenes such as the coal port, raw material plant and chemical industry.

[0003] The coal feeder cleaning chain scraper modification structure is disclosed in the utility model patent with the patent authorization announcement No. CN210504482U, and is mainly used for cleaning the internal coal of the internal chain groove steel of the coal feeder. The coal feeder of the power plant is the weighing type belt coal feeder. The internal part of the coal feeder is provided with the cleaning transmission chain to remove the fly ash and the falling materials in the internal part of the cylinder. The cleaning chain body is composed of the transmission chain, the fixed groove steel, the high-molecular polyethylene scraper, the front and rear bearings and other components.

[0004] However, after the coal falls on the belt from the raw coal bunker during the operation of the coal feeder, the coal powder falls below the belt in the stage of being sent into the coal falling pipe and entering the hearth. Due to the long-time continuous operation, the falling coal powder is increasingly increased. However, when the cleaning chain scrapes the falling coal powder, the width of the cleaning chain is smaller than the width of the lower part of the coal feeder. If the width of the cleaning chain is too wide, the cleaning chain will be damaged due to the scraping of the side of the coal feeder. Therefore, the falling coal powder on both sides of the lower part of the coal feeder will exist for a long time due to the unclean cleaning of the cleaning chain, and the self-ignition accident is prone to occur during the operation and shutdown. SUMMARY

[0005] The utility model discloses coal cleaning device of both sides of cleaning chain, solve the falling coal powder on both sides of the lower part of the coal feeder due to the unclean cleaning of the cleaning chain will exist for a long time, and the self-ignition accident is prone to occur during the operation and shutdown.

[0006] In order to achieve the above-mentioned purpose, the utility model provides coal cleaning device of both sides of cleaning chain, including raw coal bunker, the lower end of raw coal bunker is provided with belt weighing type coal feeder, the lower end of belt weighing type coal feeder is provided with cleaning chain, the right end of cleaning chain is provided with coal falling pipe, the right end of coal falling pipe is provided with hearth, the downside of cleaning chain is provided with cinder, the output chain of cleaning chain is provided with scraper, the scraper is provided with auxiliary mechanism.

[0007] The utility model discloses a principle lies in: when the belt weighing type coal feeder is in the outage period, can be full of the slag under the cleaning chain scraping, under the action of slag, can block the coal powder falling, avoid the coal powder accumulation on the ground, make the slag be scraped by the cleaning chain hurt scraper, can drive the coal powder to move, to fully scrape away the fly ash and send into the hearth, reduce even stop the belt weighing type coal feeder operation, the problem of the coal powder easy production spontaneous combustion during the outage period under,

[0008] When the scraper moves, the flexible sheet can be moved, and under the action of the flexible sheet, the friction groove and the like, the cleaning effect of the scraper can be improved, under the action of the contact strip, the contact effect of the flexible sheet is ensured, the scraping efficiency of the flexible sheet is improved, and under the deformation action of the spring, the flexible sheet is always in contact with the slag, so that good scraping performance is ensured.

[0009] The utility model discloses the beneficial effect lies in: this scheme is full of boiler slag under the cleaning chain scraping place during the belt weighing type coal feeder outage, under the action of boiler slag, can block the coal powder falling, make the coal powder can be fully scraped by the cleaning chain and send into the hearth, reduce even stop the belt weighing type coal feeder operation, the problem of the coal powder easy production spontaneous combustion during the outage period under, through the setting of flexible sheet, friction groove, can improve the cleaning effect of scraper, under the action of contact strip, the contact effect of flexible sheet is ensured, the scraping efficiency of flexible sheet is improved, and under the deformation action of the spring, the flexible sheet is always in contact with the slag, so that good scraping performance is ensured.

[0010] Further, the belt weighing type coal feeder is provided with three, three belt weighing type coal feeders are evenly distributed on the raw coal bin, and the belt weighing type coal feeder can be used for conveying and weighing raw coal.

[0011] Further, the scraper is provided with a plurality of, and the plurality of scrapers are evenly distributed on the cleaning chain, and the scraper can be used for cleaning the fly ash.

[0012] Further, the auxiliary mechanism includes a flexible sheet, the inner wall of the scraper is slidably connected with the flexible sheet, the flexible sheet is in contact with the slag, the end face of the flexible sheet is welded with a spring, the other end of the spring is welded with the scraper, the oblique end of the flexible sheet is provided with a friction groove, and the left and right ends of the flexible sheet are fixedly connected with contact strips, the contact strips are in contact with the slag, and the surface of the scraper is provided with a sliding groove, and the flexible sheet, the spring and the like can be used for cleaning the slag, the fly ash and the like.

[0013] Further, the friction groove is provided with a plurality of, and the plurality of friction grooves are evenly distributed on the flexible sheet, and the friction groove can improve the contact friction effect of the inclined surface of the flexible sheet.

[0014] Further, the whole of the contact strip is in a cylindrical shape, the contact strip is made of elastic rubber material, through the setting of the contact strip, the slag can be stirred and cleaned, and the elastic rubber material has good deformation effect.

[0015] Further, the inner wall of the sliding groove is slidably connected with a sliding plate, and the sliding plate is fixedly connected with the telescopic piece, through the setting of the sliding groove and the sliding plate, the telescopic piece can be moved and guided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the coal cleaning device on both sides of the cleaning chain of the embodiment of the present application;

[0017] Figure 2 It is a schematic view of the coal cleaning device on both sides of the cleaning chain of the embodiment of the present application; Figure 1 It is an enlarged view of the slag;

[0018] Figure 3 It is an enlarged view of A of the coal cleaning device on both sides of the cleaning chain; Figure 2

[0019] The following will be further described in detail through specific embodiments:

[0020] The reference signs in the drawings of the specification include: raw coal bin 1, hearth 2, belt weighing type coal feeder 3, cleaning chain 4, coal falling pipe 5, slag 6, scraper 7, auxiliary mechanism 8, telescopic piece 81, spring 82, friction groove 83, contact strip 84, sliding groove 85, sliding plate 86. DETAILED DESCRIPTION

[0021] The embodiment is basically as shown in Figure 1 , Figure 2 , Figure 3 , the present embodiment provides a coal cleaning device on both sides of the cleaning chain, which comprises a raw coal bin 1, the lower end of the raw coal bin 1 is provided with a belt weighing type coal feeder 3, the lower end of the belt weighing type coal feeder 3 is provided with a cleaning chain 4, the right end of the cleaning chain 4 is provided with a coal falling pipe 5, the right end of the coal falling pipe 5 is provided with a hearth 2, the lower side of the cleaning chain 4 is provided with a slag 6, and the output chain of the cleaning chain 4 is provided with a scraper 7.

[0022] As shown in Figure 1 , Figure 2 ,the belt weighing type coal feeder 3 is provided with three, the three belt weighing type coal feeders 3 are evenly distributed on the raw coal bin 1, through the setting of the belt weighing type coal feeder 3, the raw coal can be transported and weighed, the scraper 7 is provided with a plurality of, the plurality of scrapers 7 are evenly distributed on the cleaning chain 4, through the setting of the scraper 7, the coal ash can be cleaned.

[0023] As shown in Figure 1 , Figure 2 , Figure 3As shown, the scraper 7 is provided with an auxiliary mechanism 8, the auxiliary mechanism 8 includes an expansion sheet 81, the inner wall of the scraper 7 is slidably connected with the expansion sheet 81, the end face of the expansion sheet 81 is welded with a spring 82, the other end of the spring 82 is welded with the scraper 7, the oblique end of the expansion sheet 81 is provided with a friction groove 83, the left and right ends of the expansion sheet 81 are both fixedly connected with a contact strip 84, the contact strip 84 is in contact with the slag 6, the surface of the scraper 7 is provided with a sliding groove 85, through the arrangement of the expansion sheet 81, the spring 82 and the like, the slag 6, the coal ash and the like can be cleaned.

[0024] As shown in Figure 1 , Figure 2 , Figure 3 As shown, the friction groove 83 is provided with a plurality of friction grooves 83, the plurality of friction grooves 83 are uniformly distributed on the expansion sheet 81, through the arrangement of the friction groove 83, the contact friction effect of the inclined surface of the expansion sheet 81 can be improved, the overall shape of the contact strip 84 is cylindrical, the contact strip 84 is made of elastic rubber material, through the arrangement of the contact strip 84, the slag 6 can be picked up and cleaned, and the elastic rubber material has good deformation effect, the inner wall of the sliding groove 85 is slidably connected with a sliding sheet 86, the sliding sheet 86 is fixedly connected with the expansion sheet 81, through the arrangement of the sliding groove 85, the sliding sheet 86 and the like, the expansion sheet 81 can be moved and guided.

[0025] The specific implementation process of the utility model is as follows: when the belt weighing type coal feeder 3 is in the period of shutdown and maintenance, the lower part of the cleaning chain 4 that cannot be scraped is filled with slag 6, under the action of the slag 6, the falling coal powder can be blocked, the coal powder is prevented from accumulating on the ground, when the scraped plate 7 that is damaged by the cleaning chain 4 is scraped, the coal powder can be moved to fully scrape away the coal ash and send it into the hearth 2, the problem that the lower coal powder is easy to self-ignite during the operation and shutdown of the belt weighing type coal feeder 3 is reduced or even eliminated.

[0026] When the scraper 7 moves, the expansion sheet 81 can be moved, under the action of the expansion sheet 81, the friction groove 83 and the like, the cleaning effect of the scraper 7 can be improved, under the action of the contact strip 84, the contact effect of the expansion sheet 81 is ensured, the scraping efficiency of the expansion sheet 81 is improved, and under the deformation action of the spring 82, the expansion sheet 81 is always in contact with the slag 6, so that the subsequent good scratching property is ensured.

[0027] The scheme can block the falling coal powder under the action of the slag 6, so that the coal powder can be fully scraped away by the cleaning chain 4 and sent into the furnace 2, reduce or even eliminate the problem of easy spontaneous combustion of the coal powder on the lower side during the operation and shutdown of the belt weighing type coal feeder 3, and improve the cleaning effect of the scraper 7 through the setting of the expansion sheet 81 and the friction groove 83, so as to ensure the contact effect of the expansion sheet 81, improve the scraping efficiency of the expansion sheet 81, and make the expansion sheet 81 always contact with the slag 6 under the deformation action of the spring 82, so as to ensure the subsequent good scraping property.

[0028] It should be pointed out in advance that in the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0029] The above-mentioned is only the embodiment of the present application, and the well-known specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be regarded as the protection scope of the present application, which will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A device for cleaning coal accumulated on both sides of a cleaning chain, comprising a raw coal bin, characterized in that: The lower end of the raw coal bunker is provided with a belt weighing type coal feeder, the lower end of the belt weighing type coal feeder is provided with a cleaning chain, the right end of the cleaning chain is provided with a coal falling pipe, the right end of the coal falling pipe is provided with a hearth, the lower side of the cleaning chain is provided with a slag, the output chain of the cleaning chain is provided with a scraper, and the scraper is provided with an auxiliary mechanism.

2. The coal cleaning device according to claim 1, characterized in that: The belt weighing type coal feeder is provided with three, and the three belt weighing type coal feeders are evenly distributed on the raw coal bunker.

3. The coal cleaning device of claim 1, wherein: The scraper is provided with multiple, and the multiple scrapers are evenly distributed on the cleaning chain.

4. The coal cleaning device of claim 1, wherein: The auxiliary mechanism comprises a telescopic sheet, the inner wall of the scraper is slidably connected with the telescopic sheet, the telescopic sheet is in contact with the slag, the end face of the telescopic sheet is welded with a spring, the other end of the spring is welded with the scraper, the oblique end of the telescopic sheet is provided with a friction groove, the left and right ends of the telescopic sheet are both fixedly connected with a contact strip, the contact strip is in contact with the slag, and the surface of the scraper is provided with a sliding groove.

5. The coal cleaning device of claim 4, wherein: The friction groove is provided with multiple, and the multiple friction grooves are evenly distributed on the telescopic sheet.

6. The coal cleaning device of claim 4, wherein: The contact strip is in a cylindrical shape, and the contact strip is made of elastic rubber material.

7. The coal cleaning device of claim 4, wherein: The inner wall of the sliding groove is slidably connected with a sliding sheet, and the sliding sheet is fixedly connected with the telescopic sheet.

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