CN213513936U

CN213513936U - Cleaning chain dust deposition prevention device for steel belt slag conveyor

Info

Publication number: CN213513936U
Application number: CN202022451968.XU
Authority: CN
Inventors: 李峰; 丁海涛; 刘晓杰; 姜兆日; 赵怀明
Original assignee: Huaneng Weihai Power Generation Co Ltd
Current assignee: Huaneng Weihai Power Generation Co Ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-06-22
Anticipated expiration: 2030-10-29

Abstract

The utility model relates to the technical field of ash conveying in power plants, in particular to an ash deposition prevention device for a cleaning chain of a steel belt slag conveyor, which is provided with a shell, a discharge port is arranged above the shell, a slag crusher is arranged under the discharge port, the steel belt of the steel belt slag conveyor is inclined towards the upper part and extends to the discharge port, the cleaning chain is arranged under the steel belt, a scraper blade is arranged on the cleaning chain, and the ash deposition prevention device is characterized in that a buffer slag hopper is arranged under the slag crusher, the slag crusher is connected with a feed inlet of the buffer slag hopper through a slag conveying pipe, an ash deposition conveying component is arranged between the feed inlet of the buffer slag hopper and the shell, the ash deposition conveying component comprises an ash conveying hopper and an ash conveying pipe, the ash conveying hopper is horn-shaped, the flared end of the horn-shaped ash conveying hopper is connected with an ash discharge port arranged on the shell below the cleaning chain, the flared end of the ash conveying hopper is connected, the chain ash removing device has the advantages of simple structure, good ash removing effect, simplicity in operation, difficulty in abrasion of the chain, difficulty in deviation of the chain and the like.

Description

Cleaning chain dust deposition prevention device for steel belt slag conveyor

Technical Field

The utility model belongs to the technical field of the defeated ash technique of power plant and specifically relates to a steel band defeated sediment machine of difficult wearing and tearing of simple structure, ash removal effect, easy operation, chain, the difficult off tracking of chain cleans chain and prevents deposition device.

Background

As is well known, the slag removal of the existing thermal power generating unit boiler generally adopts a dry slag removal system, and the main equipment comprises a steel belt slag conveyor, a slag crusher, a bucket elevator, slag bin slag discharge equipment and the like. Wherein, the inside of the steel belt slag conveyor is provided with a cleaning chain, and the scraper blade brings fine ash falling from the steel belt into the slag crusher. The problems of chain abrasion, deviation and the like caused by much accumulated dust often occur in the operation of the cleaning chain of the steel belt slag conveyor of each unit. The reason for the analysis is as follows:

1. the coal with high ash melting point is not easy to form slag blocks after being combusted, the ash falls down in an ash surface form, the ash falls into the cleaning chain from the bearing scale when returning from a slag conveying steel belt gap, and the ash amount is increased.

2. The phenomenon that the combination is not good exists in the operation of the scraper blade of the ascending section, especially, in the ash hole department under the head, the scraper blade is lifted up and produces the gap with the casing lower part under the effect of the tension, and a large amount of ash directly flows out from the scraper blade lower part. Over time, the original dust cannot be effectively taken away, and the more and more dust is accumulated, so that the chain scraper deviates and even dislocates.

Disclosure of Invention

The utility model aims at solving the deficiencies of the prior art, providing a steel band slag conveyor cleaning chain anti-dust device of simple structure, ash removal effect is good, easy operation, the difficult wearing and tearing of chain, the difficult off tracking of chain.

The utility model provides a technical scheme that its technical problem adopted is:

an ash deposition prevention device for a cleaning chain of a steel belt slag conveyor is provided with a shell, a discharge port is arranged above the shell, a slag crusher is arranged under the discharge port, the steel belt of the steel belt slag conveyor is arranged in the shell, the steel belt of the steel belt slag conveyor inclines towards the upper part to extend to the discharge port, a cleaning chain for cleaning the steel belt is arranged below the steel belt, and scraping plates which are parallel and vertically connected with the cleaning chain are arranged on the cleaning chain. The ash conveying pipe is connected with the feed inlet of the buffer slag hopper.

The ash outlet of the shell below the cleaning chain is arranged at a position 1.8-2.5 meters away from the discharge port of the shell, so that the ash removing effect is ensured.

The middle part of horn-shaped ash conveying bucket top is equipped with the brush cleaner that parallels with the scraper blade, the below of brush cleaner is connected with horn-shaped ash conveying bucket through branch, the upper end of brush cleaner extends on the scraper blade and coincides 10-15cm with the scraper blade, the brush cleaner cleans the scraper blade, guarantees the effect of dusting.

The shells inner wall of ash hole downside on be equipped with U type arch, U type arch and shells inner wall fixed connection, U type arch is established to elastic rubber arch, scraper blade and casing on be equipped with U type elasticity guard shield on the protruding scraper blade that corresponds the position of U type, U type elasticity guard shield contacts with shells inner wall's U type arch, through U type elasticity guard shield and the protruding contact of U type, makes 0 clearance between scraper blade and the casing, has avoided floating the ash and has fallen into the casing along the clearance between casing and the scraper blade.

The utility model discloses owing to adopt above-mentioned structure, have simple structure, the ash removal is effectual, easy operation, the difficult wearing and tearing of chain, the difficult off tracking of chain advantage.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a side view of the hopper of fig. 1.

Fig. 4 is a side view of the squeegee of fig. 2.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in the attached drawing, the cleaning chain ash deposition prevention device for the steel belt slag conveyor is provided with a shell 1, a discharge port 2 is arranged above the shell 1, a slag crusher 3 is arranged under the discharge port 2, a feed port of the slag crusher 3 is communicated with the discharge port 2 of the shell 1 through a pipeline, the steel belt slag conveyor is arranged in the shell 1, a steel belt 4 of the steel belt slag conveyor inclines upwards to extend to the discharge port 2, a cleaning chain 5 for cleaning the steel belt 4 is arranged below the steel belt 4, a scraping plate 6 which is parallel and vertically connected with the cleaning chain 5 is arranged on the cleaning chain 5, the cleaning chain ash deposition prevention device is characterized in that a buffer slag hopper 7 is arranged below the slag crusher 3, the slag crusher 3 is connected with the feed port of the buffer slag hopper 7 through a slag conveying pipe, an ash deposition conveying assembly is arranged between the feed port of the buffer slag hopper 7 and the shell 1, the ash deposition conveying assembly comprises an ash conveying hopper 8 and an, the flared end of the horn-shaped ash conveying hopper 8 is connected with an ash outlet 10 arranged on the shell 1 below the cleaning chain 5, the necked end of the horn-shaped ash conveying hopper 8 is connected with an ash conveying pipe 9, and the ash conveying pipe 9 is connected with a feed inlet of the buffering slag hopper 7.

Furthermore, an ash outlet 10 of the shell 1 below the cleaning chain 5 is arranged at a position 21.8-2.5 meters away from a discharge outlet of the shell 1, so that the ash removal effect is ensured.

Furthermore, the middle part above the horn-shaped ash conveying hopper 8 is provided with a cleaning brush 11 parallel to the scraping plate 6, the lower part of the cleaning brush 11 is connected with the horn-shaped ash conveying hopper 8 through a support rod 12, the upper end of the cleaning brush 11 extends onto the scraping plate 6 and is overlapped with the scraping plate 6 by 10-15cm, and the cleaning brush 11 cleans the scraping plate 6 to ensure the ash removal effect.

Further, ash hole 10 downside on the casing 1 inner wall on be equipped with protruding 13 of U type, protruding 13 and the casing 1 inner wall fixed connection of U type, the protruding 13 of U type is established to elastic rubber protrudingly, scraper blade 6 and casing 1 on be equipped with U type elastic shield 14 on the scraper blade 6 of the protruding 13 corresponding position of U type, U type elastic shield 14 contacts with the protruding 13 of U type of casing 1 inner wall, through U type elastic shield 14 and the protruding 13 contact of U type, make 0 clearance between scraper blade 6 and the casing 1, avoided floating the ash and fallen into in the casing 1 along the clearance between casing 1 and the scraper blade 6.

The utility model discloses when using, buffering sediment fill 7 is established to falling trapezium structure, raceway and ground become 45 degrees angles of inclination and be linked together with buffering sediment fill 7 lateral walls, will clean 5 deposition of chain and lead to buffering sediment fill 7, owing to set up ash hole 10 apart from ash hole 101.8-2.5 meters position in casing 1 below, scraper blade 6 leads to grey leading-in loudspeaker form ash conveying fill 8, carry to buffering sediment fill 7 in through ash conveying pipe 9 again, owing to be equipped with cleaning brush 11, cleaning brush 11 can clean the ash floating on scraper blade 6, and owing to be equipped with U type arch 13 on the casing 1 of ash hole 10 downside, be equipped with U type guard shield on the scraper blade 6, U type arch 13 and U type guard shield O clearance combine, avoided the ash floating to get into in the casing 1, further guaranteed the ash removal effect, the device has solved the chain that the ascending section ash deposition that often takes place in the operation of steel band slag conveying machine leads to the fact and has mostly worn and torn the wearing and tearing, Off tracking scheduling problem ensures slag removal system equipment safety and stability and moves, has improved on-the-spot civilized production level, the utility model discloses owing to adopt above-mentioned structure, have simple structure, the ash removal is effectual, easy operation, the difficult wearing and tearing of chain, the difficult off tracking of chain advantage.

Claims

1. An ash deposition prevention device for a cleaning chain of a steel belt slag conveyor is provided with a shell, a discharge port is arranged above the shell, a slag crusher is arranged under the discharge port, the steel belt of the steel belt slag conveyor is arranged in the shell, the steel belt of the steel belt slag conveyor inclines towards the upper part to extend to the discharge port, a cleaning chain for cleaning the steel belt is arranged below the steel belt, and scraping plates which are parallel and vertically connected with the cleaning chain are arranged on the cleaning chain. The ash conveying pipe is connected with the feed inlet of the buffer slag hopper.

2. The dust accumulation preventing device for the cleaning chain of the steel belt slag conveyor as claimed in claim 1, wherein the dust outlet of the shell below the cleaning chain is arranged 1.8-2.5 meters away from the discharge port of the shell.

3. The dust deposition preventing device for the cleaning chain of the steel belt slag conveyor as claimed in claim 1, wherein a cleaning brush parallel to the scraping plate is arranged in the middle of the upper part of the horn-shaped dust conveying hopper, the lower part of the cleaning brush is connected with the horn-shaped dust conveying hopper through a support rod, and the upper end of the cleaning brush extends onto the scraping plate and is overlapped with the scraping plate by 10-15 cm.

4. The steel belt slag conveyor cleaning chain dust accumulation prevention device as claimed in claim 1, wherein the inner wall of the casing at the lower side of the dust outlet is provided with a U-shaped protrusion, the U-shaped protrusion is fixedly connected with the inner wall of the casing, the U-shaped protrusion is an elastic rubber protrusion, the scraper at a position corresponding to the U-shaped protrusion on the casing and the scraper are provided with a U-shaped elastic shield, the U-shaped elastic shield is in contact with the U-shaped protrusion on the inner wall of the casing, and the U-shaped elastic shield is in contact with the U-shaped protrusion to enable a 0-gap between the scraper and the casing, so that floating dust is prevented from falling into the casing along the gap between the casing and the scraper.