Improved structure of dust discharging scraper of dust remover

Abstract

The utility model discloses an improved structure of a dust discharging scraper of a dust remover, which comprises two L-shaped scrapers fixed on a chain in a back-to-back manner, and the two L-shaped scrapers are respectively a first scraper and a second scraper; the vertical surface of the first scraping plate and the vertical surface of the second scraping plate are fixedly connected through bolts after being clung to each other; the bottom surface of the first scraping plate and the bottom surface of the second scraping plate are respectively fixed with a connecting plate of the chain; the scraper comprises a chain, a driving chain wheel and a driven chain wheel, a tensioning device is arranged on the chain, and the tensioning device comprises a tensioning wheel, a rotating frame, a support and a tensioning force adjusting device. The tensioning force adjusting device comprises a vertical rod, an adjusting hole and a positioning bolt. The vertical rod is slidably connected with the support. The scraper has the beneficial effects that the L-shaped scraper is connected with the chain through bolts, so that the connecting strength of the scraper and the chain is improved, and maintenance and replacement are facilitated; and the tensioning wheel with the adjustable height is arranged, so that the tensioning wheel can be tightly attached to the chain, and the chain is prevented from falling off.

Description

Technical Field

[0001] This utility model belongs to the technical field of steelmaking equipment, and specifically relates to an improved structure of a dust collector ash unloading scraper. Background Technology

[0002] In steel plants, the dust collector ash discharge system is a crucial component, especially for critical dust collectors with large dust emission points and high dust control requirements. The high volume of ash leads to frequent use of the ash discharge system, resulting in significant wear and tear and a substantial impact on its lifespan. If the ash discharge system malfunctions or its discharge capacity is limited, it cannot complete its intended ash discharge tasks, easily causing ash accumulation and even ash agglomeration in the ash hopper, hindering normal ash discharge. The ash hopper then bears a heavy load, potentially leading to collapse and the dust collector malfunctioning. A typical dust collector ash discharge system consists of an ash hopper gate valve, a discharge valve, a scraper conveyor / screw conveyor, a bucket elevator, and an ash silo. The scraper blades of the scraper conveyor are prone to deformation during use, and because they are welded to the chain, replacement is difficult. This needs to be addressed. Currently, our company's chain tensioning device is fixed, which fails to properly tighten the chain when it extends, leading to occasional chain sags due to delayed maintenance, affecting ash conveying efficiency.

[0003] Among existing patents, application number 201210140324.6, entitled "Scraper Machine," discloses a machine including a tail frame and a tail wheel. The tail frame has an opening slot, through which the tail wheel is mounted and can move linearly a certain distance. This scraper machine also includes a linear drive fixedly mounted on the tail frame and a pusher seat, one end of which is fixedly connected to the linear drive, and the body of which is fixedly connected to the tail wheel. This application requires a very complex linear drive and pusher seat for tensioning the chain, resulting in relatively high costs.

[0004] Another application, number 202411223422.5, discloses a scraper machine. The scraper is fixedly mounted on a transmission chain by an installation assembly. The scraper installation assembly includes an L-shaped installation plate fixed at intervals on the transmission chain. The L-shaped installation plate has a first installation through hole, and the scraper is L-shaped. The scraper also has a second installation through hole, and the first and second installation through holes are the same size. The same installation screw is fixedly inserted through the first and second installation through holes, and a fixing nut is screwed onto the installation screw. The scraper in this application is fixed on only one side, which makes it easy to be damaged. Utility Model Content

[0005] The purpose of this invention is to provide an improved structure for a dust collector scraper unloading machine. The improvement is achieved by modifying the scraper's structure and fixing method, thereby increasing the scraper's strength and making it easier to replace when damaged. The tensioning device can also prevent problems such as chain slippage.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] An improved structure for a dust collector ash unloading scraper conveyor includes a chain and two L-shaped scrapers fixed back-to-back on the chain. The two L-shaped scrapers are a first scraper and a second scraper, respectively. The vertical surfaces of the first scraper and the second scraper are pressed together and fixedly connected by bolts. The bottom surfaces of the first scraper and the second scraper are respectively fixed to the connecting plate of the chain.

[0008] Furthermore, it also includes a driving sprocket and a driven sprocket, which are connected by a chain drive.

[0009] Furthermore, the chain is equipped with a tensioning device located below the chain.

[0010] Furthermore, the tensioning device includes a first tensioning device near the drive sprocket and a second tensioning device near the driven sprocket, and the first tensioning device and the second tensioning device have the same structure.

[0011] Furthermore, the first tensioning device includes a tensioning wheel that abuts against the chain, a rotating frame that is rotatably connected to the tensioning wheel, a bracket for mounting the rotating frame, and a tension force adjusting device installed between the bracket and the rotating frame.

[0012] Furthermore, the tension adjustment device includes a vertical rod mounted on the rotating frame, an adjustment hole provided on the vertical rod, and a positioning bolt passing through the adjustment hole to fix the vertical rod to the bracket.

[0013] Furthermore, the upright is slidably connected to the bracket.

[0014] Compared with the prior art, the significant beneficial effects achieved by this utility model are as follows:

[0015] Two L-shaped scrapers are used, designated as the first scraper and the second scraper. The vertical surfaces of the first and second scrapers are attached together and fixed with bolts. The bottom surfaces of the first and second scrapers are fixed to the connecting plate of the chain. This replaces the original method of welding a single plate to the chain, increasing the strength of the scraper. The back-to-back fixing of the first and second scrapers further enhances the scraper's strength. The method of fixing the two scrapers to the chain with bolts and nuts makes it easy to replace the scrapers if they are damaged.

[0016] With the two tensioning devices in place, when the chain is loose, the positioning bolts can be removed, the upright can be raised along the bracket, and then the positioning bolts can be passed through the adjustment holes to fix the upright. This increases the wrap angle between the chain and the sprocket, preventing the chain from falling off. Attached Figure Description

[0017] AppendixFigure 1 This is a schematic diagram of the structure of this application;

[0018] Appendix Figure 2 This is a schematic diagram showing the connection between the first scraper and the second scraper.

[0019] Appendix Figure 3 This is a schematic diagram of the tensioning device.

[0020] Appendix Figure 4 This is a schematic diagram of the tensioner installation.

[0021] Appendix Figure 5 This is a schematic diagram showing the positions of the chain, scraper, and tensioner.

[0022] In the attached diagram,

[0023] 1-Drive sprocket, 2-Passive sprocket, 3-Chain, 31-First scraper, 32-Second scraper, 33-Bolt, 4-Tensioner, 5-Rotating frame, 51-Upright pole, 52-Adjusting hole, 53-Bracket, 54-Bearing, 55-Snap ring, 6-Material cavity. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0025] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0026] Example 1

[0027] like Figure 1 , 2 As shown in Figure 3,

[0028] An improved structure for a dust collector ash unloading scraper conveyor includes a chain 3 and two L-shaped scrapers fixed back-to-back on the chain 3. The two L-shaped scrapers are a first scraper 31 and a second scraper 32. The vertical surfaces of the first scraper 31 and the second scraper 32 are fixedly connected by bolts 33 after being pressed together. The bottom surfaces of the first scraper 31 and the second scraper 32 are respectively fixed to the connecting plate of the chain 3.

[0029] The detailed structure is as follows: Figure 3 After the first scraper 31 and the second scraper 32 are pressed tightly together back to back, they are fixed together by bolts and nuts arranged in a triangular shape. In this way, the two scrapers are firmly connected and not easy to loosen.

[0030] like Figure 2 As shown, the bottom surfaces of the L-shaped first scraper 31 and the second scraper 32 are fixed to the connecting plate of the chain 3 by bolts and nuts. This facilitates replacement of the scraper after it is damaged by removing the bolts, making maintenance easier. Currently, we use scrapers with a thickness of 5mm. After six months of use, they rarely deform or break. Before the improvement, the scrapers typically lasted two to three months. Obviously, the structural change has extended their service life.

[0031] When the scraper on chain 3 is deformed or damaged, loosen the bolts, remove the old scraper, and install the new scraper.

[0032] Example 2

[0033] The structure of this embodiment is largely the same as that of Embodiment 1.

[0034] The difference is that,

[0035] During the use of the scraper conveyor, it was found that because the scraper conveyor is relatively long, the chain 3 also needs to be very long. As the chain 3 sags under its own weight and also stretches after a period of use, the wrap angle with the two sprockets is too small, causing the chain to fall off frequently.

[0036] like Figure 4 As shown, it also includes a driving sprocket 1 and a driven sprocket 2, which are connected by a chain 3.

[0037] The chain 3 is equipped with a tensioning device, which is located below the chain 3.

[0038] The tensioning device includes a first tensioning device near the drive sprocket 1 and a second tensioning device near the passive sprocket 2, and the first tensioning device and the second tensioning device have the same structure.

[0039] The detailed structure is as follows: the first tensioning device includes a tensioning wheel 4 that abuts against the chain 3, a rotating frame 5 that is rotatably connected to the tensioning wheel 4, a bracket 53 for mounting the rotating frame 5, and a tension force adjusting device installed between the bracket 53 and the rotating frame 5.

[0040] The tension adjustment device includes a vertical rod 51 mounted on the rotating frame 5, an adjustment hole 52 provided on the vertical rod 51, and a positioning bolt that passes through the adjustment hole 52 to fix the vertical rod 51 to the bracket 53.

[0041] The upright 51 is slidably connected to the bracket 53.

[0042] The rotating frame 5 is equipped with a bearing 54, and the center of the tension wheel 4 is equipped with a rotating shaft. The rotating shaft 4 is equipped with a retaining spring 55 to prevent the tension wheel 4 from moving axially. The rotating shaft is installed in the inner ring of the bearing 54.

[0043] When the chain 3 becomes longer after a period of use, loosen the positioning bolts, push the upright 51 upwards so that the wrap angle between the chain 3 and the sprocket is large enough, insert the positioning bolts into the positioning holes 52 of the upright 51, and fix the upright 51 to the bracket 53. There are several positioning holes 52 from top to bottom, so that the upright 51 can be fixed by using the nearest positioning hole 52.

[0044] Example 3

[0045] The structure of this embodiment is largely the same as that of embodiment 2.

[0046] The difference is that,

[0047] like Figure 5 As shown, the scraper conveyor has a long strip-shaped material chamber 6 for conveying ash. There are two chains 3, which are arranged opposite each other. The scraper is fixed to the connecting plate on the opposite side of the two chains 3, and the width of the scraper is smaller than the width of the inner connecting plate of the two sets of chains 3 to avoid interference with the tension wheel 4.

Claims

1. An improved structure for a dust collector scraper conveyor, the scraper conveyor including a chain (3), characterized in that: It includes two L-shaped scrapers fixed to the chain (3) from opposite sides, namely the first scraper (31) and the second scraper (32); the vertical surfaces of the first scraper (31) and the second scraper (32) are fixedly connected by bolts (33) after being pressed together; the bottom surfaces of the first scraper (31) and the second scraper (32) are fixed to the connecting plate of the chain (3) by bolts and nuts.

2. The improved structure of the dust collector ash unloading scraper according to claim 1, characterized in that: It also includes a drive sprocket (1) and a driven sprocket (2), which are connected by a chain (3).

3. The improved structure of the dust collector ash unloading scraper according to claim 2, characterized in that: The chain (3) is provided with a tensioning device, which is located below the chain (3).

4. The improved structure of the dust collector ash unloading scraper according to claim 3, characterized in that: The tensioning device includes a first tensioning device near the drive sprocket (1) and a second tensioning device near the passive sprocket (2), and the first tensioning device and the second tensioning device have the same structure.

5. The improved structure of the dust collector ash unloading scraper according to claim 4, characterized in that: The first tensioning device includes a tensioning wheel (4) that abuts against the chain (3), a rotating frame (5) that is rotatably connected to the tensioning wheel (4), a bracket (53) for mounting the rotating frame (5), and a tension force adjusting device installed between the bracket (53) and the rotating frame (5).

6. The improved structure of the dust collector ash unloading scraper according to claim 5, characterized in that: The tension adjustment device includes a vertical rod (51) mounted on the rotating frame (5), an adjustment hole (52) provided on the vertical rod (51), and a positioning bolt that passes through the adjustment hole (52) to fix the vertical rod (51) to the bracket (53).

7. The improved structure of the dust collector ash unloading scraper according to claim 6, characterized in that: The upright (51) is slidably connected to the bracket (53).

Images