Rotary unblocking device for upper scraper and lower scraper of raw coal bunker
By designing a rotating scraper unblocking device for the upper and lower parts of the raw coal bunker, the device uses rotating scrapers to clean up adhering coal, solving the problems of time-consuming and labor-intensive traditional unblocking methods and the danger of working at heights, thus achieving efficient cleaning and stable operation of the equipment in the coal bunker.
Patent Information
- Application Number
- CN202520007284.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-01-03
AI Technical Summary
Traditional methods of clearing blockages are time-consuming and labor-intensive, pose dangers for working at heights, and cannot completely solve the problem of coal bunker blockages. In particular, the coal in the raw coal hopper and the coal drop pipe are prone to sticking and hardening, which can lead to abnormal equipment operation.
Design a rotary cleaning device for raw coal bunkers with upper and lower scrapers. The device utilizes the rotation of upper and lower scrapers against the bunker wall to clean the adhering coal through centrifugal force and scraping force. It includes an upper bunker component and a lower bunker component, each equipped with a motor-driven rotating body and scrapers to achieve all-round cleaning.
It effectively cleans coal adhering to the walls of the coal bunker, prevents blockages, reduces equipment malfunctions, improves feeding efficiency, and reduces the risks associated with manual cleaning.
Smart Images
Figure CN223560338U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a rotate and clear blocking device technical field, concretely is a kind of upper and lower scraper rotary cleaning blocking device of raw coal bunker. BACKGROUND
[0002] Raw coal bucket outlet generally adopts conical structure, and there is certain height vertical pipe section, coal flow rate becomes slow at this place, especially in standby stage of stopping coal feeder, fine powder in high water powder coal is extremely easy to stick wall, harden in this section, until completely blocked, cause coal pipe to be blocked, coal feeder is disconnected, thereby causing the unstable combustion of boiler, load fluctuation, if raw coal bucket, coal pipe is blocked seriously, multiple simultaneous blockage, it will cause generator set to be forced to reduce power, even appear unstable combustion of boiler needs to be a large number of oil, more serious will cause the boiler to be extinguished, unit unplanned shutdown of adverse event.
[0003] Some power plants use high-moisture coal, which is long-term accumulation in raw coal bucket, and will appear wall hanging, puffed coal, cause coal feeder to be disconnected, cause the unstable combustion of boiler and other abnormal conditions.
[0004] Traditional cleaning method is to open hole in upper part of coal bunker, manually poke coal, dredge, this work needs to invest a lot of human resources to clean up, and cannot completely solve the problem of coal blocking, and coal bunker blocking position is mostly 2m or more part, there is a lot of high-altitude operation, high risk coefficient, also time-consuming and wasteful, so that manual cleaning of coal bunker is inconvenient. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a kind of upper and lower scraper rotary cleaning blocking device of raw coal bunker, to solve the problem of manual cleaning of coal bunker, there is high-altitude operation, time-consuming and laborious.
[0006] To achieve the above object, the utility model provides the following technical scheme:
[0007] A kind of upper and lower scraper rotary cleaning blocking device of raw coal bunker, including upper bin assembly and lower bin assembly, flange is connected between the upper bin assembly and lower bin assembly, the upper bin assembly is the circular table type of upper opening big lower opening small, the lower bin assembly is cylindrical, the upper bin assembly inner wall is coaxially rotatably connected with upper scraper, the upper scraper is inclined state with the upper bin assembly inner wall, the lower bin assembly inner wall is coaxially rotatably connected with lower scraper, the lower scraper is vertical state with the lower bin assembly inner wall.
[0008] Preferably, the upper bin assembly includes upper bin top seat, upper bin base and first rotator, the upper end of the first rotator is coaxially rotatably connected with the lower end of upper bin top seat, the lower end of the first rotator is coaxially rotatably connected with the upper end of upper bin base, and the upper scraper is fixedly connected to the inner side surface of the first rotator.
[0009] Preferably, the outer wall of the upper bin top base and the outer wall of the upper bin base are fixedly connected with a first protective sleeve, the first protective sleeve is movably sleeved on the surface of the first rotary body to protect the first rotary body, the surface of the first protective sleeve is provided with a first motor, and the first motor is used to drive the first rotary body to rotate.
[0010] Preferably, the lower bin assembly comprises a lower bin top base, a lower bin base and a second rotary body, the upper end of the second rotary body is coaxially and rotatably connected with the lower end of the lower bin top base, the lower end of the second rotary body is coaxially and rotatably connected with the upper end of the lower bin base, and the lower scraper is fixedly connected to the inner side surface of the second rotary body.
[0011] Preferably, the outer wall of the lower bin top base and the outer wall of the lower bin base are fixedly connected with a second protective sleeve, the second protective sleeve is movably sleeved on the surface of the second rotary body to protect the second rotary body, the surface of the second rotary body is provided with a second motor, and the second motor is used to drive the second rotary body to rotate.
[0012] Compared with the prior art, the utility model has the advantages that:
[0013] 1. The utility model discloses a scraper rotary unblocking device, which is driven by an external speed reducer to rotate an internal scraper, so that wall-adhered accumulated coal is completely cleaned, which is beneficial to prevent the traditional coal bunker unblocking device from only being capable of removing the blockage at the coal falling pipe of the coal feeder inlet, and to solve the problem of coal bunker wall-adhered blockage and reduce the abnormal operation of equipment caused by coal blockage. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 It is a sectional view of the utility model as a whole.
[0015] Fig. 2 It is a sectional view of the upper bin assembly of the utility model.
[0016] Fig. 3 It is a sectional view of the lower bin assembly of the utility model.
[0017] In the drawing: 1, upper bin top base; 2, first protective sleeve; 3, upper bin base; 4, first rotary body; 5, first motor; 6, I-shaped ring; 7, upper scraper; 8, flange; 9, lower bin top base; 10, second protective sleeve; 11, lower bin base; 12, second rotary body; 13, second motor; 14, lower scraper. DETAILED DESCRIPTION
[0018] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments only are a part of embodiments of the utility model, and not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the range of protection of the utility model.
[0019] Please refer to Figs. 1 to 3 The utility model provides a technical scheme.
[0020] A kind of original coal bunker upper and lower scraper rotary unblocking device, including upper bin component and lower bin component, flange 8 is connected between upper bin component and lower bin component, upper bin component is the circular table type of upper opening big lower opening small, lower bin component is cylindrical, upper scraper 7 is coaxially rotationally connected in the inner wall of upper bin component, upper scraper 7 is in the inclined state of being attached to the inner wall of upper bin component, lower scraper 14 is coaxially rotationally connected in the inner wall of lower bin component, lower scraper 14 is in the vertical state of being attached to the inner wall of lower bin component, utilize flange 8 connection, greatly increase the unblocking height, ensure that the entire coal bunker easy to block position is all cleaned, the total unblocking height of upper and lower scraper unblocking device reaches 4000mm, effectively solve the problem of coal hopper blockage, reduce the abnormal operation of equipment caused by coal blockage.
[0021] Upper bin component is the circular table type of upper opening big lower opening small, this shape is conducive to the feeding of raw coal. When raw coal is transported into the bin, the larger upper opening can provide a wider feeding space, facilitating the release of raw coal, for example, when using a conveyor belt or a dump truck to feed raw coal into the bin, the larger opening can better receive raw coal, improving the feeding efficiency.
[0022] Upper scraper 7 is attached to the inner wall of upper bin component and rotates in an inclined state. This inclined design can utilize the centrifugal force and scraping force during rotation to effectively clean the raw coal attached to the inclined bin wall. When upper scraper 7 rotates, it can produce a scraping effect on raw coal at different positions due to its attachment to the bin wall, preventing raw coal from sticking and accumulating on the bin wall. For example, when raw coal contains a certain amount of moisture or has high viscosity, it is prone to adhere to the bin wall. The rotation of upper scraper 7 can scrape off these raw coals, ensuring the normal falling of raw coal.
[0023] The lower bin component is designed in a cylindrical shape, which ensures uniform stress distribution on the bin wall.
[0024] Lower scraper 14 rotates in a vertical state attached to the inner wall of lower bin component, which can effectively clean the raw coal on the inner wall of the cylindrical lower bin. During the falling process of raw coal, some raw coal may adhere to the vertical bin wall. The rotation of lower scraper 14 can comprehensively scrape the bin wall, preventing raw coal from accumulating on the bin wall and ensuring that the effective inner diameter of the lower bin is not blocked by raw coal, allowing raw coal to smoothly pass through the lower bin into subsequent equipment.
[0025] The upper bin assembly comprises an upper bin top base 1, an upper bin bottom base 3 and a first rotary body 4, the upper end of the first rotary body 4 is coaxially and rotatably connected with the lower end of the upper bin top base 1, the lower end of the first rotary body 4 is coaxially and rotatably connected with the upper end of the upper bin bottom base 3, an upper scraper 7 is fixedly connected with the inner side surface of the first rotary body 4, and the upper scraper 7 located at the inner side can be rotated by rotating the first rotary body 4 at the outer side.
[0026] The rotation of the first rotary body 4 at the outer side drives the rotation of the upper scraper 7 at the inner side, which ingeniously utilizes the mechanical transmission principle, simplifies the structural complexity of driving the rotation of the upper scraper 7, and simultaneously, the rotation movement characteristics of the first rotary body 4 make it difficult for raw coal to adhere, and the raw coal moves downward under the action of its own gravity and centrifugal force generated by rotation, which can guide the movement of the raw coal.
[0027] A first protective sleeve 2 is fixedly connected between the outer wall of the upper bin top base 1 and the outer wall of the upper bin bottom base 3, the first protective sleeve 2 is movably sleeved on the surface of the first rotary body 4 to protect the first rotary body 4, and a first motor 5 is installed on the surface of the first protective sleeve 2, the first motor 5 is used to drive the rotation of the first rotary body 4, which can be driven by the technology well known to those skilled in the art, for example, gear transmission technology, specifically, a gear ring is coaxially and fixedly connected with the surface of the first rotary body 4, the output end of the first motor 5 is coaxially and fixedly connected with a gear, the gear is meshingly connected with the gear ring, the first motor 5 is started to drive the rotation of the gear, the rotation of the gear drives the rotation of the gear ring, thereby driving the rotation of the first rotary body 4, and the first protective sleeve 2 provides a reliable protective barrier for the first rotary body 4 to prevent external environmental interference.
[0028] The lower bin assembly comprises a lower bin top base 9, a lower bin bottom base 11 and a second rotary body 12, the upper end of the second rotary body 12 is coaxially and rotatably connected with the lower end of the lower bin top base 9, the lower end of the second rotary body 12 is coaxially and rotatably connected with the upper end of the lower bin bottom base 11, a lower scraper 14 is fixedly connected with the inner side surface of the second rotary body 12, the lower scraper 14 located at the inner side can be rotated by rotating the second rotary body 12 at the outer side, and the rotation movement characteristics of the second rotary body 12 make it difficult for raw coal to adhere, and the raw coal moves downward under the action of its own gravity and centrifugal force generated by rotation, which can guide the downward movement of the raw coal.
[0029] A second protective sleeve 10 is fixedly connected between the outer wall of the lower bin top base 9 and the outer wall of the lower bin bottom base 11, the second protective sleeve 10 is movably sleeved on the surface of the second rotary body 12 to protect the second rotary body 12, and a second motor 13 is installed on the surface of the second rotary body 12, the second motor 13 is used to drive the rotation of the second rotary body 12, which can be driven by the technology well known to those skilled in the art, for example, gear transmission technology, which will not be described again.
[0030] The flange 8 is installed between the upper bin base 3 and the lower bin top 9, and communicates the upper bin base 3 and the lower bin top 9, and the upper and lower ends of the first rotary body 4 and the second rotary body 12 are fixedly connected with the I-shaped ring 6, and the lower end of the upper bin top 1, the upper end of the upper bin base 3, the lower end of the lower bin top 9 and the upper end of the lower bin base 11 are all matched with the annular groove for the rotation of the I-shaped ring 6.
[0031] The specific embodiment is that: the first motor 5 is started to drive the first rotary body 4 to rotate, so that the first rotary body 4 rotates coaxially between the upper bin top 1 and the upper bin base 3, and the upper scraper 7 fixedly connected to the inner side surface of the first rotary body 4 also rotates with the rotation of the first rotary body 4, and the upper scraper 7 is in an inclined state adhering to the inner wall of the upper bin assembly, so that the centrifugal force and the scraping force are used to clean the raw coal adhered to the inclined bin wall during the rotation, the second motor 13 is started to drive the second rotary body 12 to rotate coaxially between the lower bin top 9 and the lower bin base 11, and the lower scraper 14 fixedly connected to the inner side surface of the second rotary body 12 also starts to rotate, and the lower scraper 14 is in a vertical state adhering to the inner wall of the lower bin assembly, so that the raw coal adhered to the inner wall of the cylindrical lower bin is scraped during the rotation, and the rotation of the lower scraper 14 can prevent the raw coal from accumulating on the bin wall and ensure that the effective inner diameter of the lower bin is not blocked.
[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A kind of raw coal bin up and down doctor blade rotation unblocking device, including upper bin component and lower bin component, it is characterized by: The flange (8) is connected between the upper bin assembly and the lower bin assembly, the upper bin assembly is a circular truncated cone with large upper opening and small lower opening, the lower bin assembly is a cylinder, the upper scraper (7) is coaxially and rotatably connected to the inner wall of the upper bin assembly, the upper scraper (7) is in an inclined state adhering to the inner wall of the upper bin assembly, the lower scraper (14) is coaxially and rotatably connected to the inner wall of the lower bin assembly, and the lower scraper (14) is in a vertical state adhering to the inner wall of the lower bin assembly.
2. The upper and lower scraper rotary unblocking device for raw coal bunker according to claim 1, characterized in that, The upper bin assembly comprises an upper bin top seat (1), an upper bin bottom seat (3) and a first rotary body (4), the upper end of the first rotary body (4) is coaxially and rotatably connected to the lower end of the upper bin top seat (1), and the lower end of the first rotary body (4) is coaxially and rotatably connected to the upper end of the upper bin bottom seat (3), and the upper scraper (7) is fixedly connected to the inner side surface of the first rotary body (4).
3. The upper and lower scraper rotary unblocking device for raw coal bunker according to claim 2, characterized in that, The outer wall of the upper bin top seat (1) and the outer wall of the upper bin bottom seat (3) are fixedly connected with the first protective sleeve (2), the first protective sleeve (2) is movably sleeved on the surface of the first rotary body (4) to protect the first rotary body (4), and the surface of the first protective sleeve (2) is provided with the first motor (5), and the first motor (5) is used for driving the first rotary body (4) to rotate.
4. The upper and lower scraper rotary unblocking device for raw coal bunker according to claim 1, characterized in that, The lower bin assembly comprises a lower bin top seat (9), a lower bin bottom seat (11) and a second rotary body (12), the upper end of the second rotary body (12) is coaxially and rotatably connected to the lower end of the lower bin top seat (9), and the lower end of the second rotary body (12) is coaxially and rotatably connected to the upper end of the lower bin bottom seat (11), and the lower scraper (14) is fixedly connected to the inner side surface of the second rotary body (12).
5. The upper and lower scraper rotary unblocking device for raw coal bunker according to claim 4, characterized in that, The outer wall of the lower bin top seat (9) and the outer wall of the lower bin bottom seat (11) are fixedly connected with the second protective sleeve (10), the second protective sleeve (10) is movably sleeved on the surface of the second rotary body (12) to protect the second rotary body (12), and the surface of the second rotary body (12) is provided with the second motor (13), and the second motor (13) is used for driving the second rotary body (12) to rotate.