Vibration trough for dry type deslagging of coal-fired power plant

Abstract

The utility model discloses a vibrating trough for dry-type deslagging of a coal-fired power plant, which relates to the technical field of dry-type deslagging and comprises a boiler ash hopper, and a large slag crushing device is arranged at an outlet of the boiler ash hopper. A cleaning mechanism is arranged at the output end of the large slag crushing device and used for preventing hard agglomerates generated after high-temperature slag is cooled from affecting the slag conveying effect, the cleaning mechanism comprises a scraper unit, the scraper unit is arranged below the large slag crushing device and comprises a trough shell, a sliding seat is slidably mounted in the trough shell, and the scraper unit is arranged below the large slag crushing device. A group of rotating shafts are rotationally mounted in the sliding seat; according to the reciprocating unit, the scraper unit is arranged, a first motor operates to drive a rotating shaft to rotate, the rotating shaft drives a rotating disc to rotate, and the rotating disc drives a scraper to rotate, so that the bottom of an inner cavity of the trough shell is scraped, hard agglomerates generated after high-temperature slag is cooled are cleaned, and the situation that the conveying effect of the slag is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of dry slag removal technology, specifically a vibrating trough for dry slag removal in coal-fired power plants. Background Technology

[0002] Vibrating troughs utilize the principle of mechanical vibration, generating periodic vibrations through a vibrating motor or exciter, causing the ash and slag in the trough to move forward along the trough body under the action of vibration.

[0003] According to the patent titled "A More Adaptable Three-Stage Dry Ash Removal Conveying System for Coal-Fired Power Plant Boilers" (Patent Publication No.: CN210425071U, Patent Publication Date: 2020-04-28), the horizontal section of the steel belt conveyor in the primary, secondary, and tertiary ash removal machines is the ash receiving end, and the inclined section is the ash discharge end. The ash receiving end of the primary ash removal machine is located at the outlet of the large ash pre-crushing device. A first transition ash hopper connected to the ash receiving end of the secondary ash removal machine is located at the ash discharge end of the primary ash removal machine. A second transition ash hopper connected to the ash receiving end of the secondary ash removal machine is located at the ash discharge end of the secondary ash removal machine. A third transition ash hopper connected to the upper inlet of the ash crusher is located at the ash discharge end of the tertiary ash removal machine. The ash storage bin is located below the ash crusher, and the ash unloading device of the ash bin is connected to the ash storage bin. The center of the lower ash discharge port of the boiler ash discharge hopper is relatively offset from the center of its upper ash inlet. It can significantly reduce the temperature of the slag reaching the crusher and can also adapt to various power plant boiler layouts.

[0004] Based on the aforementioned existing technology, the existing vibrating troughs for dry slag removal in coal-fired power plants still have the following problems: a static slag layer is easily formed at the bottom of the traditional vibrating trough, and hard sintered blocks are generated after the high-temperature slag cools down, which affects the slag conveying effect. Therefore, this utility model provides a vibrating trough for dry slag removal in coal-fired power plants. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a vibrating trough for dry slag removal in coal-fired power plants. It solves the following problems that still exist in existing vibrating troughs for dry slag removal in coal-fired power plants: a static slag layer easily forms at the bottom of traditional vibrating troughs, and hard sintered blocks are generated after the high-temperature slag cools down, which affects the slag conveying effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vibrating trough for dry slag removal in a coal-fired power plant, comprising a boiler ash hopper, wherein a large slag crushing device is provided at the outlet of the boiler ash hopper, and a cleaning mechanism is provided at the output end of the large slag crushing device to prevent hard sintered lumps generated after the high-temperature slag cools from affecting the slag conveying effect; the cleaning mechanism includes:

[0007] The scraper unit is located below the large slag crushing device. It includes a trough shell, a sliding seat is slidably installed inside the trough shell, a set of rotating shafts is rotatably installed inside the sliding seat, a turntable is fixedly installed at the bottom of the rotating shafts, and several scrapers are fixedly installed on the surface of the turntable, with the bottom of the scrapers contacting the bottom of the inner cavity of the trough shell.

[0008] The reciprocating unit is located on the front side of the trough housing and is used to drive the movement of the sliding seat.

[0009] Preferably, the front plate of the material trough housing has a sliding groove inside, and the rear plate of the material trough housing has a limiting groove inside. The sliding seat slides inside the limiting groove and the sliding groove. Several vibrators are fixedly installed at the bottom of the material trough housing, and a dry slag remover is fixedly installed at the output end of the material trough housing.

[0010] Preferably, a first motor is fixedly installed on the top of the sliding seat, and the output end of the first motor is fixedly connected to the upper end of the rotating shaft. A protective shell is fixedly installed on the top of the sliding seat to protect the first motor.

[0011] Preferably, the reciprocating unit includes a limiting post fixedly installed inside the slide groove, and the front end of the sliding seat slides on the surface of the limiting post.

[0012] Preferably, a fixing frame is fixedly installed on the front side of the material trough shell, and a main rotating wheel and a secondary rotating wheel are rotatably installed on the inner side of the fixing frame. A belt is fitted between the main rotating wheel and the secondary rotating wheel. A second motor is fixedly installed on the outer side of the fixing frame. The three-dimensional output end of the second motor passes through the fixing frame and is fixedly connected to the main rotating wheel. A fixing plate is fixedly installed on the surface of the belt, and a linkage column is fixedly installed on the inner side of the fixing plate.

[0013] Preferably, a linkage block is fixedly installed at the front end of the sliding seat, and a linkage groove is opened inside the linkage block, and the linkage column is located inside the linkage groove to adapt to sliding.

[0014] This utility model provides a vibrating feed trough for dry ash removal in coal-fired power plants. Compared with the prior art, it has the following advantages:

[0015] 1. The vibrating trough for dry slag removal in this coal-fired power plant is equipped with a scraper unit. The first motor drives the rotating shaft to rotate, which in turn drives the turntable to rotate. The turntable then drives the scraper to rotate, thereby scraping the bottom of the inner cavity of the trough shell to clean the hard sintered blocks produced after the high-temperature slag cools, thus avoiding affecting the slag conveying effect.

[0016] 2. The vibrating trough for dry slag removal in this coal-fired power plant is equipped with a reciprocating unit. The second motor drives the main rotor to rotate, and the main rotor drives the belt to rotate through the secondary rotor. The belt drives the fixed plate to rotate, and the fixed plate drives the linkage column to rotate synchronously. The linkage column slides inside the linkage groove to realize the reciprocating movement of the linkage block. The linkage block drives the sliding seat to reciprocate synchronously, so as to realize the reciprocating movement of the scraper unit to clean the bottom of the inner cavity of the trough shell. Attached Figure Description

[0017] Figure 1 This is a front sectional perspective view of the present invention.

[0018] Figure 2 This is a left-side perspective view of the cleaning mechanism of this utility model.

[0019] Figure 3 This is a three-dimensional cross-sectional view of the scraper unit of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional view of the reciprocating unit of this utility model.

[0021] In the diagram: 1-Boiler ash hopper, 2-Cleaning mechanism, 21-Scraper unit, 211-Feed trough shell, 212-Slide chute, 213-Limiting groove, 214-Sliding seat, 215-Rotating shaft, 216-Turntable, 217-Scraper, 218-First motor, 219-Protective shell, 22-Reciprocating unit, 221-Limiting column, 222-Main impeller, 223-Secondary impeller, 224-Belt, 225-Linkage block, 226-Linkage groove, 227-Fixing plate, 228-Linkage column, 229-Fixing frame, 2210-Second motor, 3-Large slag crushing device, 4-Dry slag remover, 5-Vibrator. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4 This utility model provides a technical solution:

[0024] A vibrating trough for dry slag removal in a coal-fired power plant includes a boiler ash hopper 1. A large slag crushing device 3 is installed at the outlet of the boiler ash hopper 1. A cleaning mechanism 2 is installed at the output end of the large slag crushing device 3 to prevent hard sintered lumps generated after the high-temperature slag cools from affecting the slag conveying effect. The cleaning mechanism 2 includes:

[0025] The scraper unit 21 is located below the large slag crushing device 3. It includes a trough shell 211, and a sliding seat 214 is slidably installed inside the trough shell 211. A set of rotating shafts 215 is rotatably installed inside the sliding seat 214. A turntable 216 is fixedly installed at the bottom end of the rotating shaft 215. Several scrapers 217 are fixedly installed on the surface of the turntable 216. The bottom of the scrapers 217 contacts the bottom of the inner cavity of the trough shell 211.

[0026] The reciprocating unit 22 is located on the front side of the trough housing 211 and is used to drive the movement of the sliding seat 214.

[0027] In this embodiment, a sliding groove 212 is provided inside the front plate of the material trough housing 211, and a limiting groove 213 is provided inside the rear plate of the material trough housing 211. The sliding seat 214 slides inside the limiting groove 213 and the sliding groove 212. Several vibrators 5 are fixedly installed at the bottom of the material trough housing 211, and a dry slag remover 4 is fixedly installed at the output end of the material trough housing 211.

[0028] The first motor 218, model KV3SF-8521F-WR, is electrically connected to an external power supply and is operated by a human control panel. The first motor 218 drives the rotating shaft 215 to rotate, the rotating shaft 215 drives the turntable 216 to rotate, and the turntable 216 drives the scraper 217 to rotate, thereby scraping the bottom of the inner cavity of the trough shell 211 to clean the hard sintered blocks produced after the high-temperature slag cools, so as to avoid affecting the slag conveying effect.

[0029] In this embodiment, a first motor 218 is fixedly installed on the top of the sliding seat 214, and the output end of the first motor 218 is fixedly connected to the upper end of the rotating shaft 215. A protective shell 219 is fixedly installed on the top of the sliding seat 214 to protect the first motor 218.

[0030] The first motor 218 is protected by the protective shell 219 fixedly installed on the top of the sliding seat 214.

[0031] In this embodiment, the reciprocating unit 22 includes a limiting post 221 fixedly installed inside the slide groove 212, and the front end of the sliding seat 214 slides on the surface of the limiting post 221.

[0032] The front end of the sliding seat 214 slides on the surface of the limiting post 221, thereby limiting the movement of the sliding seat 214.

[0033] In this embodiment, a fixing frame 229 is fixedly installed on the front side of the material trough shell 211, and a main rotating wheel 222 and a secondary rotating wheel 223 are rotatably installed on the inner side of the fixing frame 229. A belt 224 is fitted between the main rotating wheel 222 and the secondary rotating wheel 223. A second motor 2210 is fixedly installed on the outer side of the fixing frame 229. The three-dimensional output end of the second motor 2210 passes through the fixing frame 229 and is fixedly connected to the main rotating wheel 222. A fixing plate 227 is fixedly installed on the surface of the belt 224. A linkage column 228 is fixedly installed on the inner side of the fixing plate 227. A linkage block 225 is fixedly installed at the front end of the sliding seat 214. A linkage groove 226 is opened inside the linkage block 225. The linkage column 228 is located inside the linkage groove 226 and is adapted to slide.

[0034] The second motor 2210, model KV3SF-8521F-WR, is electrically connected to an external power supply and is operated by a human-controlled control panel. The second motor 2210 drives the main rotating wheel 222 to rotate. The main rotating wheel 222 drives the belt 224 to rotate through the secondary rotating wheel 223. The belt 224 drives the fixed plate 227 to rotate. The fixed plate 227 drives the linkage column 228 to rotate synchronously. The linkage column 228 slides inside the linkage groove 226 to realize the reciprocating movement of the linkage block 225. The linkage block 225 drives the sliding seat 214 to move synchronously, realizing the reciprocating movement of the scraper unit 21 to clean the bottom of the inner cavity of the trough housing 211.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] During operation, the high-temperature ash and slag from the boiler first enter the large slag crushing device 3 through the boiler ash and slag hopper 1, so that the ash and slag particles are crushed. The crushed ash and slag enter the cleaning mechanism 2 and are then transported to the dry slag remover 4.

[0037] During the conveying process of the cleaning mechanism 2, the vibrator 5 vibrates the material trough housing 211. At the same time, the second motor 2210 drives the main rotating wheel 222 to rotate. The main rotating wheel 222 drives the belt 224 to rotate through the secondary rotating wheel 223. The belt 224 drives the fixed plate 227 to rotate. The fixed plate 227 drives the linkage column 228 to rotate synchronously. The linkage column 228 slides inside the linkage groove 226 to realize the reciprocating movement of the linkage block 225. The linkage block 225 drives the sliding seat 214 to reciprocate synchronously.

[0038] When the sliding seat 214 moves, the first motor 218 runs and drives the rotating shaft 215 to rotate. The rotating shaft 215 drives the turntable 216 to rotate, and the turntable 216 drives the scraper 217 to rotate, thereby scraping the bottom of the inner cavity of the trough shell 211 and cleaning the hard sintered blocks produced after the high-temperature slag is cooled.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibrating trough for dry slag removal in a coal-fired power plant, comprising a boiler ash hopper (1), wherein the outlet of the boiler ash hopper (1) is provided with a large slag crushing device (3), characterized in that: The output end of the large slag crushing device (3) is equipped with a cleaning mechanism (2) to prevent hard sintered blocks generated after the high-temperature slag cools from affecting the slag conveying effect. The cleaning mechanism (2) includes: The scraper unit (21) is located below the slag crushing device (3), including a trough shell (211), and a sliding seat (214) is slidably installed inside the trough shell (211), and a set of rotating shafts (215) is rotatably installed inside the sliding seat (214), and a turntable (216) is fixedly installed at the bottom end of the rotating shaft (215), and several scrapers (217) are fixedly installed on the surface of the turntable (216), and the bottom of the scrapers (217) contacts the bottom of the inner cavity of the trough shell (211); The reciprocating unit (22) is located on the front side of the trough housing (211) and is used to drive the movement of the sliding seat (214).

2. The vibrating trough for dry slag removal in a coal-fired power plant according to claim 1, characterized in that: The front plate of the material trough housing (211) is provided with a sliding groove (212), and the inner side of the rear plate of the material trough housing (211) is provided with a limiting groove (213). The sliding seat (214) slides inside the limiting groove (213) and the sliding groove (212). Several vibrators (5) are fixedly installed at the bottom of the material trough housing (211), and a dry slag remover (4) is fixedly installed at the output end of the material trough housing (211).

3. The vibrating trough for dry slag removal in a coal-fired power plant according to claim 1, characterized in that: The top of the sliding seat (214) is fixedly mounted with a first motor (218), and the output end of the first motor (218) is fixedly connected to the upper end of the rotating shaft (215). The top of the sliding seat (214) is fixedly mounted with a protective shell (219) to protect the first motor (218).

4. A vibrating trough for dry slag removal in a coal-fired power plant according to claim 2, characterized in that: The reciprocating unit (22) includes a limiting post (221) fixedly installed inside the slide groove (212), and the front end of the sliding seat (214) slides on the surface of the limiting post (221).

5. A vibrating trough for dry slag removal in a coal-fired power plant according to claim 1, characterized in that: A fixing frame (229) is fixedly installed on the front side of the material trough shell (211), and a main rotating wheel (222) and a secondary rotating wheel (223) are rotatably installed on the inner side of the fixing frame (229). A belt (224) is fitted between the main rotating wheel (222) and the secondary rotating wheel (223). A second motor (2210) is fixedly installed on the outer side of the fixing frame (229), and the three-dimensional output end of the second motor (2210) passes through the fixing frame (229) and is fixedly connected to the main rotating wheel (222). A fixing plate (227) is fixedly installed on the surface of the belt (224), and a linkage column (228) is fixedly installed on the inner side of the fixing plate (227).

6. A vibrating trough for dry slag removal in a coal-fired power plant according to claim 5, characterized in that: The sliding seat (214) has a linkage block (225) fixedly installed at its front end, and the linkage block (225) has a linkage groove (226) inside, and the linkage column (228) is located inside the linkage groove (226) to adapt to sliding.

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