A scraper unblocking device

Abstract

This utility model provides a scraper unblocking device, comprising: an upper cylinder, the lower end of which is fixedly connected to an upper sealing cover, the lower end of which is fixedly connected to the upper side of a sealing cover via the upper sealing cover, the lower end of the sealing cover being fixedly connected to a lower sealing cover, and the lower sealing cover being fixedly connected to the upper end of a lower cylinder. A bearing is installed inside the sealing cover, and a rotating body is rotatably installed inside the bearing. A fixed seat is provided on the inner wall of the rotating body. Compared with the prior art, this utility model has the following beneficial effects: by setting up the entire scraper unblocking device, the problem of frequent coal blockage within two meters above the outlet gate of the boiler raw coal bunker is effectively solved. By setting up a scraper, a pinion, a transmission gear, a rotating body, and a bearing, the transmission gear will drive the scraper to rotate at a relatively slow speed, thereby having a stronger scraping force to scrape away the blocked coal and preventing fine coal from adhering to the inner walls of the upper and lower cylinders after becoming damp.

Description

Technical Field

[0001] This utility model belongs to the field of coal bunker unblocking technology, and specifically relates to a scraper unblocking device. Background Technology

[0002] Coal blockage frequently occurs within two meters above the outlet gate of the boiler's raw coal bunker. This is mainly due to abundant rainwater, the presence of coal slurry in the fuel, and the high moisture and viscosity of the coal, all contributing to frequent blockages. Additionally, the lower part of the coal bunker has a conical structure, where the flow cross-sectional area gradually decreases along the coal flow direction, leading to increased compression pressure and friction between the fuel and the bunker walls, while the gravitational component of the coal flowing along the walls remains constant. Therefore, as the coal flows, the equivalent flow force within the conical coal hopper decreases. Coal bunker blockage is primarily caused by the caking and adhesion of fine coal powder to the walls, typically starting at the narrowest point of the bunker outlet and gradually progressing upwards. Therefore, we aim to design a novel scraper-type unblocking device to address this problem. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a scraper unclogging device to solve the problems mentioned in the background art.

[0004] This utility model is achieved through the following technical solution: a scraper unblocking device, comprising: an upper cylinder, the lower end of which is fixedly connected to an upper sealing cover, the lower end of which is fixedly connected to the upper side of a sealing cover via the upper sealing cover, the lower end of the sealing cover being fixedly connected to a lower sealing cover, the lower sealing cover being fixedly connected to the upper end of a lower cylinder, a bearing being installed inside the sealing cover, a rotating body being rotatably installed inside the bearing, a fixed seat being provided on the inner wall of the rotating body, and a scraper being installed on the inner wall of the rotating body via the fixed seat, the scraper being matched with the inclination of the inner walls of the upper and lower cylinders. In actual use, the entire device has multiple working modes, including an intelligent anti-blocking mode: based on the comparison between the given value and the actual value of the coal feed, it automatically starts unblocking when the deviation is 10%, effectively preventing coal shortage events, while also saving energy and avoiding unnecessary periodic rotation that would waste electricity.

[0005] Anti-blocking mode: The time interval (such as 4h, 6h, 8h, etc.) can be freely set by the time controller, and the equipment will automatically run the set number of revolutions, usually 2 revolutions. The time interval is generally obtained from experience based on the coal quality. This mode can effectively prevent coal blockage and ensure that the coal flow is not interrupted.

[0006] Unblocking mode: The unblocking device automatically starts to unblock when it receives a coal cut-off signal from the coal feeder, until the coal cut-off signal disappears;

[0007] Local manual mode: Enables local manual control of equipment start and stop, and can also be used for daily inspection;

[0008] DCS remote control: Enables remote control of equipment start and stop from the central control room. The control equipment used in the above modes can all be existing products on the market, with the aim of realizing the above multiple usage modes.

[0009] In a preferred embodiment, a speed reducer is installed on the upper right side of the sealing cover via an upper sealing cover, and the speed reducer is connected to the drive motor shaft. The lower end of the speed reducer is connected to a pinion key via a rotating shaft. The pinion is located inside the right side of the sealing cover. An extended oil nozzle is provided on the right side of the upper sealing cover for injecting lubricating oil.

[0010] In a preferred embodiment, an upper sealing element is fixed between the upper sealing cover and the outer bearing shell to achieve sealing, and a lower sealing element is fixed between the lower sealing cover and the outer bearing shell.

[0011] In a preferred embodiment, the outer wall of the lower cylinder is provided with a second support lug for fixing the lower sealing cap, and the outer wall of the upper cylinder is provided with a first support lug for fixing the upper sealing cap. The upper sealing cap and the lower sealing cap are fixed by multiple columns and locking bolts, wherein the columns are used to support the upper sealing cap and the lower sealing cap, and the locking bolts are used to lock and fix them.

[0012] In a preferred embodiment, an upper packing is provided between the upper side of the rotating body and the upper side of the bearing inner shell to achieve a seal between the upper side of the rotating body and the upper side of the bearing inner shell, and a lower packing is provided between the lower side of the rotating body and the lower side of the bearing inner shell to achieve a seal between the lower side of the rotating body and the lower side of the bearing inner shell.

[0013] In a preferred embodiment, a transmission gear is integrally provided at the lower end of the rotating body, and the transmission gear meshes with a pinion for transmission.

[0014] In a preferred embodiment, the integral structure consisting of the upper and lower cylinders has an inner diameter that gradually decreases from top to bottom, forming a funnel shape. The upper end of the scraper is flush with the top of the inner wall of the upper cylinder, and the lower end of the scraper is flush with the bottom of the inner wall of the lower cylinder. A gap is provided between the scraper and the inner walls of the upper and lower cylinders. In actual use, the gap between the scraper and the inner walls of the upper and lower cylinders is preferably 8-9mm, so that the scraper can rotate smoothly to remove debris without jamming, and also to prevent the problem of excessive residue after removal.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by setting the entire scraper unblocking device, the user can set an intelligent anti-blocking mode or an anti-blocking mode, or other modes, which can be set according to actual usage needs. By driving the scraper built into the inner wall of the upper and lower cylinders to rotate circumferentially, the silted coal is combed out, which effectively solves the problem of coal blockage that often occurs within two meters above the outlet gate of the boiler raw coal bunker.

[0016] By setting up a scraper, pinion, transmission gear, rotating body, and bearings, the transmission gear synchronously drives the rotating body to rotate, which in turn causes the scraper mounted on the rotating body to rotate accordingly. The pinion drives the transmission gear to move. The pinion has a smaller diameter than the transmission gear, which allows the transmission gear to drive the scraper to rotate at a relatively slower speed, thus having a stronger scraping force to remove the blocked coal and prevent fine coal from adhering to the inner walls of the upper and lower cylinders after it gets damp. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a scraper unclogging device according to the present invention.

[0019] Figure 2 This is a schematic diagram showing the connection between the transmission gear and the pinion in a scraper unclogging device according to this utility model.

[0020] In the diagram, 1-upper cylinder, 2-upper sealing gland, 3-reducer, 4-extended oil nozzle, 5-upper seal, 6-sealing cover, 7-pinion, 8-lower sealing gland, 9-lower cylinder, 10-scraper, 11-lower seal, 12-lower packing, 13-column, 14-bearing, 15-rotating body, 16-upper packing, 17-transmission gear, 18-drive motor. Detailed Implementation

[0021] 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.

[0022] As the first embodiment of this utility model:

[0023] Please see Figures 1 to 2 A scraper 10 unblocking device includes: an upper cylinder 1, the lower end of which is fixedly connected to an upper sealing cover 2, the lower end of which is fixedly connected to the upper side of a sealing cover 6 via the upper sealing cover 2, the lower end of the sealing cover 6 being fixedly connected to a lower sealing cover 8, the lower sealing cover 8 being fixedly connected to the upper end of a lower cylinder 9, a bearing 14 being installed inside the sealing cover 6, a rotating body 15 being rotatably installed inside the bearing 14, a fixed seat being provided on the inner wall of the rotating body 15, and a scraper 10 being installed on the inner wall of the rotating body 15 via the fixed seat. The scraper 10 is matched with the inclination of the inner walls of the upper cylinder 1 and the lower cylinder 9. In actual use, the entire device has multiple working modes, including an intelligent anti-blocking mode: based on the comparison between the given value and the actual value of the coal feed, it automatically starts to unblock when the deviation is 10%, effectively preventing coal shortage events, while also saving energy and avoiding unnecessary periodic rotation that would waste electricity.

[0024] Anti-blocking mode: The time interval (such as 4h, 6h, 8h, etc.) can be freely set by the time controller, and the equipment will automatically run the set number of revolutions, usually 2 revolutions. The time interval is generally obtained from experience based on the coal quality. This mode can effectively prevent coal blockage and ensure that the coal flow is not interrupted.

[0025] Unblocking mode: The unblocking device automatically starts to unblock when it receives a coal cut-off signal from the coal feeder, until the coal cut-off signal disappears;

[0026] Local manual mode: Enables local manual control of equipment start and stop, and can also be used for daily inspection;

[0027] DCS remote control: Enables remote control of equipment start and stop from the central control room. The control equipment used in the above modes can all be existing products on the market, with the aim of realizing the above multiple usage modes.

[0028] Specifically, by setting up the entire scraper 10 anti-blocking device, in actual use, its upper cylinder 1 is sealed and fixed to the lower end of the coal feeder outlet, while the lower end of the lower cylinder 9 is fixedly connected to the upper side of the electric slide gate. During normal operation, the user can set the intelligent anti-blocking mode or the anti-blocking mode, or other modes, which can be set according to the actual use requirements. By driving the scraper 10, which is built into the inner wall of the upper cylinder 1 and the lower cylinder 9 and can rotate circumferentially, the silted coal is combed, which effectively solves the problem of coal blockage that often occurs within two meters above the slide gate of the boiler raw coal bunker outlet.

[0029] As the first embodiment of this utility model:

[0030] Please see Figures 1 to 2A reducer 3 is installed on the upper right side of the sealing cover 6 via the upper sealing cover 2, and the reducer 3 is connected to the shaft of the drive motor 18. The lower end of the reducer 3 is connected to the pinion 7 via a rotating shaft. The pinion 7 is located inside the right side of the sealing cover 6. An extended oil nozzle 4 is provided on the right side of the upper sealing cover 2 for injecting lubricating oil.

[0031] An upper sealing element 5 is fixed between the upper sealing cover 2 and the outer shell of the bearing 14 to achieve sealing, and a lower sealing element 11 is fixed between the lower sealing cover 8 and the outer shell of the bearing 14.

[0032] The outer wall of the lower cylinder 9 is provided with a second support ear for fixing the lower sealing cover 8, and the outer wall of the upper cylinder 1 is provided with a first support ear for fixing the upper sealing cover 2. The upper sealing cover 2 and the lower sealing cover 8 are fixed by multiple columns 13 and locking bolts, wherein the columns 13 are used to support the upper sealing cover 2 and the lower sealing cover 8, and the locking bolts are used to lock and fix them.

[0033] An upper packing 16 is provided between the upper side of the rotating body 15 and the upper side of the inner shell of the bearing 14 to achieve a seal between the upper side of the rotating body 15 and the upper side of the inner shell of the bearing 14. A lower packing 12 is provided between the lower side of the rotating body 15 and the lower side of the inner shell of the bearing 14 to achieve a seal between the lower side of the rotating body 15 and the lower side of the inner shell of the bearing 14.

[0034] A transmission gear 17 is integrally provided at the lower end of the rotating body 15, and the transmission gear 17 meshes with the pinion 7 for transmission.

[0035] The integral structure composed of the upper cylinder 1 and the lower cylinder 9 has an inner diameter that gradually decreases from top to bottom, forming a funnel shape. The upper end of the scraper 10 is flush with the top of the inner wall of the upper cylinder 1, and the lower end of the scraper 10 is flush with the bottom of the inner wall of the lower cylinder 9. There is a gap between the scraper 10 and the inner walls of the upper cylinder 1 and the lower cylinder 9. In actual use, the gap between the scraper 10 and the inner walls of the upper cylinder 1 and the lower cylinder 9 is preferably 8-9mm, so that the scraper 10 can rotate smoothly to remove debris without jamming, and also prevent the problem of too much residue after removal.

[0036] Based on the first embodiment described above, further, by setting up a scraper 10, a pinion 7, a transmission gear 17, a rotating body 15, and a bearing 14, in actual use, if unclogging is required, the drive motor 18 is started to drive the reducer 3 to move, thereby driving the pinion 7 and the transmission gear 17 to rotate. Since the rotating body 15 is mounted inside the bearing 14, and a fixed seat is provided on the inner wall of the rotating body 15, the scraper 10 is mounted on the inner wall of the rotating body 15 through the fixed seat. The transmission gear 17 is integrally provided at the lower end of the rotating body 15, and the transmission gear 17 meshes with the pinion 7 for transmission. The transmission gear 17 synchronously drives the rotating body 15 to rotate, thereby causing the scraper 10 mounted on the rotating body 15 to rotate accordingly. The pinion 7 drives the transmission gear 17 to move. The diameter of the pinion 7 is smaller than that of the transmission gear 17 (see the attached instruction manual for details). Figure 2 This allows the transmission gear 17 to drive the scraper 10 to rotate at a relatively slow speed, thereby providing a stronger scraping force to remove the clogged coal and preventing fine coal from sticking to the inner walls of the upper cylinder 1 and the lower cylinder 9 after it gets damp.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A scraper unclogging device, comprising: The upper cylinder (1) is characterized in that the lower end of the upper cylinder (1) is fixedly connected to the upper sealing cover (2), the lower end of the upper cylinder (1) is fixedly connected to the upper side of the sealing cover (6) through the upper sealing cover (2), the lower end of the sealing cover (6) is fixedly connected to the lower sealing cover (8), the lower sealing cover (8) is fixedly connected to the upper end of the lower cylinder (9), a bearing (14) is installed inside the sealing cover (6), a rotating body (15) is rotatably installed inside the bearing (14), a fixed seat is provided on the inner wall of the rotating body (15), a scraper (10) is installed on the inner wall of the rotating body (15) through the fixed seat, and the scraper (10) is matched with the inclination of the inner wall of the upper cylinder (1) and the lower cylinder (9).

2. The scraper unclogging device as described in claim 1, characterized in that: A speed reducer (3) is installed on the upper right side of the sealing cover (6) via an upper sealing cover (2), and the speed reducer (3) is connected to the shaft of the drive motor (18). The lower end of the speed reducer (3) is connected to the pinion (7) via a rotating shaft. The pinion (7) is located inside the right side of the sealing cover (6). An extended oil nozzle (4) is provided on the right side of the upper sealing cover (2) for injecting lubricating oil.

3. The scraper unclogging device as described in claim 1, characterized in that: An upper sealing element (5) is fixed between the upper sealing cap (2) and the outer shell of the bearing (14) to achieve sealing, and a lower sealing element (11) is fixed between the lower sealing cap (8) and the outer shell of the bearing (14).

4. The scraper unclogging device as described in claim 3, characterized in that: The lower cylinder (9) has a second support ear on its outer wall for fixing the lower sealing cap (8), and the upper cylinder (1) has a first support ear on its outer wall for fixing the upper sealing cap (2). The upper sealing cap (2) and the lower sealing cap (8) are fixed by multiple columns (13) and locking bolts, wherein the columns (13) are used to support the upper sealing cap (2) and the lower sealing cap (8) and the locking bolts are used to lock and fix them.

5. The scraper unclogging device as described in claim 4, characterized in that: An upper packing (16) is provided between the upper side of the rotating body (15) and the upper side of the inner shell of the bearing (14) to achieve a seal between the upper side of the rotating body (15) and the upper side of the inner shell of the bearing (14). A lower packing (12) is provided between the lower side of the rotating body (15) and the lower side of the inner shell of the bearing (14) to achieve a seal between the lower side of the rotating body (15) and the lower side of the inner shell of the bearing (14).

6. The scraper unclogging device as described in claim 2, characterized in that: The lower end of the rotating body (15) is integrally provided with a transmission gear (17), which meshes with the pinion (7) for transmission.

7. The scraper unclogging device as described in claim 1, characterized in that: The integral structure formed by the upper cylinder (1) and the lower cylinder (9) has an inner diameter that gradually decreases from top to bottom, forming a funnel shape. The upper end of the scraper (10) is flush with the top of the inner wall of the upper cylinder (1), and the lower end of the scraper (10) is flush with the bottom of the inner wall of the lower cylinder (9). There is a gap between the scraper (10) and the inner wall of the upper cylinder (1) and the inner wall of the lower cylinder (9).

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