Sweeping mechanism of coal feeder

Abstract

The utility model discloses a coal feeder cleaning mechanism which comprises a supporting frame, the supporting frame is installed on the lower portion of a belt of a coal feeder, an installation frame is installed above the supporting frame, driving chain wheels are installed on the two sides of the two ends above the installation frame, one driving chain wheel is connected with a driving motor, and a driving chain is installed on the driving chain wheel. A plurality of scraper frames are installed on the driving chain at equal intervals, a coal scraping plate is installed above the scraper frames in a sliding mode, a spring array is arranged between the coal scraping plate and the scraper frames, a downward pressing frame is fixedly installed at the upper end of the installation frame, and a plurality of downward pressing rollers are rotatably installed on the downward pressing frame. The lower pressing roller is arranged above the coal scraping plate, so that the coal scraping plate can conveniently scrape wet coal adhered to the belt of the coal feeder, meanwhile, the spring array is arranged below the coal scraping plate, so that the coal scraping plate keeps an upward force, and the coal scraping plate is in contact with the belt of the coal feeder after the coal scraping plate is abraded.

Description

Technical Field

[0001] This utility model belongs to the technical field of coal feeders and relates to a coal feeder cleaning mechanism. Background Technology

[0002] In the production activities of thermal power plants, coal is usually supplied to the boiler via belt feeders. Since the coal supplied by the feeders is usually wet coal with high viscosity, the portion near the belt may stick to the belt, causing blockage of the feeder, overloading the drive unit, and causing it to stop working.

[0003] Therefore, in actual production, scrapers are usually installed at the end of the feeder belt or at the bottom of the feeder to scrape off the wet coal adhering to the bottom of the feeder. However, during the scraping process, because the belt is a flexible structure, some of the firmly attached wet coal cannot be scraped off. Moreover, after a long period of use, the scrapers wear out, making it impossible to scrape them off effectively. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a coal feeder cleaning mechanism, which effectively solves the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A coal feeder cleaning mechanism includes:

[0007] Support frame, which is installed under the coal feeder belt;

[0008] Mounting bracket, which is mounted above the support frame;

[0009] The drive sprockets are installed on both sides of the upper end of the mounting frame, and one of the drive sprockets is connected to a drive motor.

[0010] Two drive chains are mounted on the drive sprocket;

[0011] A scraper frame, with both ends of the scraper frame fixedly installed on the drive chain, and multiple scraper frames installed at equal intervals on the drive chain;

[0012] A coal scraper, which is slidably mounted on the scraper frame, and a spring array is provided between the coal scraper and the scraper frame;

[0013] A lower pressure bracket, which is fixedly installed on the mounting bracket;

[0014] A plurality of lower pressure rollers are rotatably mounted on the lower pressure frame, the lower pressure rollers are located above the coal scraper, and the coal feeder belt is located between the lower pressure rollers and the coal scraper.

[0015] Optionally, the scraper frame includes a mounting box, in which a plurality of sliding columns are slidably mounted. The sliding columns pass through the mounting box and are fixedly connected to the scraper plate. The spring array is mounted in the mounting box and fixedly connected to the sliding columns.

[0016] Optionally, a plurality of threaded rods are fixedly installed at the bottom of the mounting frame, the threaded rods slidably passing through the support frame, and fastening nuts are provided on both sides of the support frame for the threaded rods.

[0017] Optionally, a circular mounting position is provided at the center of the support frame and the mounting frame, and a jack is provided in the mounting position.

[0018] Optionally, an extension frame is installed at the end of the mounting frame away from the end of the feeder belt. A bristle roller is rotatably mounted on the upper end of the extension frame. A pulley is fixedly mounted on one end of the bristle roller, and the pulley is connected to the drive sprocket via a belt.

[0019] Optionally, the extension frame is rotatably mounted on the mounting frame, and a lifting spring is installed between the extension frame and the mounting frame.

[0020] Optionally, the extension frame is rotatably mounted with two fixed columns, each fixed column having a U-shaped groove at one end facing the other, and a rotating column is engaged between the two U-shaped grooves. The brush is mounted on the rotating column, the fixed columns are bolted to the rotating column, and the pulley is mounted on the fixed column.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting a lower pressure roller above the scraper plate, the feeder belt is positioned between the lower pressure roller and the scraper plate. When the feeder belt is running, the scraper plate scrapes off the wet coal adhering to the feeder belt, and the lower pressure roller forms downward pressure, reducing the possibility that the feeder belt will be subjected to upward force during scraping and cannot be effectively scraped. At the same time, a spring array is set below the scraper plate to keep the scraper plate in an upward force, so that the scraper plate will contact the feeder belt after wear occurs.

[0023] 2. By setting up the mounting box and sliding column, the force on the scraper in the belt running direction is increased, and the mounting box forms a seal on the spring array, reducing the possibility of scraped coal dust scattering in the spring array and affecting its operation;

[0024] 3. By setting up an extension frame and a brush roller, after scraping, the brush roller further removes fine particles from the conveyor belt, reducing the adhesion points of wet coal in the next batch. Attached Figure Description

[0025] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the drive sprocket portion according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the mounting box portion of an embodiment of the present utility model;

[0028] Figure 4 This is a structural schematic diagram of the fixed column portion of an embodiment of this utility model.

[0029] Reference numerals: 1. Support frame; 2. Mounting frame; 21. Threaded rod; 22. Fastening nut; 23. Jack; 31. Drive sprocket; 32. Drive chain; 33. Scraper frame; 331. Mounting box; 332. Sliding column; 34. Coal scraper; 341. Spring array; 41. Lower pressure frame; 42. Lower pressure roller; 6. Extension frame; 61. Brush; 62. Pulley; 63. Lifting spring; 64. Fixed column; 641. U-shaped groove; 65. Rotating column. Detailed Implementation

[0030] 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.

[0031] Please see Figures 1-3 This is a coal feeder cleaning mechanism disclosed in an embodiment of the present utility model. Please refer to [link / reference]. Figure 1 It includes a support frame 1, which is installed under the coal feeder belt, and a mounting frame 2 is installed above the support frame 1. Please refer to [link / reference]. Figure 1 and Figure 2 Both ends of the mounting bracket 2 are equipped with drive sprockets 31, one of which is connected to a drive motor. A drive chain 32 is mounted on the drive sprocket 31. Please refer to [link / reference]. Figure 3 Multiple scraper frames 33 are equidistantly mounted on the drive chain 32. Both ends of the scraper frames 33 are fixedly mounted to the drive chain 32. A coal scraper plate 34 is slidably mounted above the scraper frames 33. A spring array 341 is provided between the coal scraper plate 34 and the scraper frame 33. (See also...) Figure 1 The upper end of the mounting frame 2 is fixedly mounted with a lower pressure frame 41. Multiple lower pressure rollers 42 are rotatably mounted on the lower pressure frame 41. The lower pressure rollers 42 are located above the coal scraper plate 34, and the coal feeder belt is located between the lower pressure rollers 42 and the coal scraper plate 34.

[0032] In this way, by setting a lower pressure roller 42 above the scraper plate 34, the feeder belt is positioned between the lower pressure roller 42 and the scraper plate 34. When the feeder belt is running, the scraper plate 34 scrapes off the wet coal adhering to the feeder belt, and the lower pressure roller 42 forms a downward pressure, reducing the possibility that the feeder belt will be subjected to upward force during scraping and cannot be effectively scraped. At the same time, a spring array 341 is set below the scraper plate 34 to keep the scraper plate 34 under an upward force, so that the scraper plate 34 contacts the feeder belt after wear occurs.

[0033] In some feasible embodiments, the support frame 1 and the mounting frame 2 are rectangular frames. The support frame 1 is fixedly installed on the lower part of the coal feeder belt. Both sides of the mounting frame 2 are equipped with a chain mechanism consisting of a drive sprocket 31 and a drive chain 32. The scraper frame 33 is fixed at both ends to the links of the drive chain 32 by bolts. The coal scraper 34 is plate-shaped and is slidably connected to the scraper frame 33. The spring array 341 includes multiple springs, and the two ends of the springs are fixedly connected to the coal scraper 34 and the scraper frame 33.

[0034] Rectangular plates are fixedly connected to both sides of the mounting bracket 2. Multiple U-shaped grooves are opened at the upper end of the rectangular plates. The two ends of the lower pressure roller 42 are placed in the U-shaped grooves. A fixing plate is bolted to the outside of the rectangular plate. Multiple U-shaped grooves are set on the fixing plate. The U-shaped grooves on the fixing plate lock the lower pressure roller 42 for fixation.

[0035] As a specific embodiment of the coal feeder cleaning mechanism provided in the application, the scraper frame 33 includes a mounting box 331, in which a plurality of sliding columns 332 are slidably installed. The sliding columns 332 penetrate the mounting box 331 and are fixedly connected to the coal scraper 34. The spring array 341 is installed in the mounting box 331 and is fixedly connected to the sliding columns 332.

[0036] Overall, by setting up the mounting box 331 and the sliding column 332, the force on the scraper in the belt running direction is increased, and the mounting box 331 forms a seal on the spring array 341, reducing the possibility of scraped coal dust scattering in the spring array 341 and affecting its operation.

[0037] In some feasible ways, the mounting box 331 is rectangular, with a bolt-connected top cover at the upper end of the mounting box 331. The top cover has multiple round holes, and the sliding column 332 can be slidably installed in the round holes. A U-shaped frame is provided at the upper end of the sliding column 332, and the U-shaped frame is fixed to the coal scraper plate 34 by bolts.

[0038] As another specific embodiment of the coal feeder cleaning mechanism provided in the application, please refer to Figure 1 Multiple threaded rods 21 are fixedly installed at the bottom of the mounting bracket 2. The threaded rods 21 can slide through the support frame 1. Fastening nuts 22 are provided on both sides of the support frame 1 for the threaded rods 21.

[0039] Depending on the specific application scenario, by setting the threaded rod 21 and the fastening nut 22, the mounting bracket 2 can be raised and lowered, which makes it easy to adjust the installation height according to the wear of the coal scraper plate 34.

[0040] Furthermore, a circular mounting position is provided at the center of the support frame 1 and the mounting frame 2, and a jack 23 is provided in the mounting position.

[0041] It should be understood that by setting up jack 23, it is convenient to raise and lower the mounting frame 2.

[0042] As one specific implementation of the coal feeder cleaning mechanism provided in the application, please refer to Figure 1 An extension frame 6 is installed at the end of the mounting frame 2 away from the end of the coal feeder belt. A brush 61 is rotatably mounted on the upper end of the extension frame 6. A pulley 62 is fixedly mounted at one end of the brush 61. The pulley 62 is connected to the drive sprocket 31 via a belt.

[0043] It should be understood that by setting up the extension frame 6 and the brush 61, after scraping, the brush further removes the fine particles from the conveyor belt, reducing the adhesion points of the wet coal in the next application.

[0044] Furthermore, the extension frame 6 is rotatably mounted on the mounting frame 2, and a lifting spring 63 is installed between the extension frame 6 and the mounting frame 2.

[0045] It should be understood that by setting up the lifting spring 63, the brush 61 maintains pressure on the belt.

[0046] For further details, please refer to Figure 4 The extension frame 6 is rotatably mounted with two fixed posts 64. The opposite ends of the two fixed posts 64 are provided with U-shaped grooves 641. A rotating post 65 is snapped between the two U-shaped grooves 641. A brush 61 is mounted on the rotating post 65. The fixed posts 64 and the rotating post 65 are bolted together. A pulley 62 is mounted on the fixed post 64.

[0047] It should be understood that by setting the U-shaped groove 641 and the rotating column 65, the replacement and disassembly of the brush roller 61 part is facilitated.

[0048] In some feasible embodiments, the extension frame 6 includes two rectangular plates mounted on both sides of the mounting frame 2, a lifting spring 63 with both ends hinged between the mounting frame 2 and the extension frame 6, a fixing post 64 rotatably mounted on the extension frame 6, and a rotating post 65 with both ends set in a rectangular block that is inserted into a U-shaped groove 641, the U-shaped groove 641 and the rectangular block having threaded through holes.

[0049] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cleaning mechanism for a coal feeder, characterised in that, The utility model relates to a coal scraping device for coal feeder, including: Support frame (1) is installed to the lower part of coal feeder belt; Mounting frame (2) is installed above the support frame (1); Driving sprocket (31) is installed on both sides of the both ends of mounting frame (2) above, one of driving sprocket (31) is connected with driving motor; Driving chain (32) is installed in driving sprocket (31); Scraper frame (33) is fixedly installed on both ends of driving chain (32), and a plurality of scraper frames (33) are equidistantly installed on driving chain (32); Coal scraping plate (34) is slidably installed on scraper frame (33), and spring array (341) is arranged between coal scraping plate (34) and scraper frame (33); Lower pressing frame (41) is fixedly installed on mounting frame (2); Lower pressing roller (42) is rotatably installed on lower pressing frame (41), and lower pressing roller (42) is located above coal scraping plate (34), and coal feeder belt is located between lower pressing roller (42) and coal scraping plate (34).

2. A cleaning mechanism for a coal feeder as claimed in claim 1, wherein: The scraper frame (33) includes a mounting box (331), a plurality of sliding columns (332) are slidably installed in the mounting box (331), the sliding columns (332) penetrate the mounting box (331) and are fixedly connected with the coal scraping plate (34), and the spring array (341) is installed in the mounting box (331) and is fixedly connected with the sliding columns (332).

3. A cleaning mechanism for a coal feeder as claimed in claim 1, wherein: A plurality of threaded rods (21) are fixedly installed at the bottom of the mounting frame (2), the threaded rods (21) slidably penetrate the support frame (1), and fastening nuts (22) are arranged at both sides of the support frame (1).

4. A cleaning mechanism for a coal feeder as claimed in claim 3, wherein: A circular mounting position is arranged at the center of the support frame (1) and the mounting frame (2), and a jack (23) is arranged in the mounting position.

5. A cleaning mechanism for a coal feeder as claimed in claim 1, wherein: An extension frame (6) is installed at one end of the mounting frame (2) away from the end of the coal feeder belt, a hair roller brush (61) is rotatably installed at the upper end of the extension frame (6), a pulley (62) is fixedly installed at one end of the hair roller brush (61), and the pulley (62) is connected with the driving sprocket (31) through a belt.

6. A cleaning mechanism for a coal feeder as claimed in claim 5 wherein: The extension frame (6) is rotatably installed on the mounting frame (2), and a lifting spring (63) is installed between the extension frame (6) and the mounting frame (2).

7. A cleaning mechanism for a coal feeder as claimed in claim 5 wherein: Two fixed columns (64) are rotatably installed on the extension frame (6), U-shaped grooves (641) are arranged at opposite ends of the two fixed columns (64), a rotating column (65) is clamped and installed between the two U-shaped grooves (641), the hair roller brush (61) is installed on the rotating column (65), the fixed column (64) and the rotating column (65) are bolted, and the pulley (62) is installed on the fixed column (64).

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