Waste stone powder storage bin capable of reducing flying dust
By designing the storage bin structure of the inverted conical bin body and inclined lowering plate, the problem of dust flying in waste stone powder is solved, and the effective landing of dust is achieved and dust rise is reduced.
Patent Information
- Application Number
- CN202421846871.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-31
AI Technical Summary
During the storage of waste stone powder, dust is prone to flying, causing dust to spray out and float again, and the existing technology is difficult to effectively solve this problem.
A storage bin structure including an inverted conical bin body, a bag dust collector, a through-hole, an inclined down plate and a guide plate is designed. The dust falls down through the bag dust collector and slides down along the inclined lowering plate and the conical inner wall of the silo. Through multiple collisions and guidance of the guide plate, the sliding speed is slowed down and dust rise is reduced.
It effectively reduces the drift and rise of dust during the falling process, realizes the uniform drop of dust and reduces the flying of dust.
Smart Images
Figure CN222907014U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a waste stone powder storage bin, and more specifically, to a waste stone powder storage bin that reduces dust flying. Background Art
[0002] At present, circulating fluidized bed boilers use waste stone powder injection into the furnace for desulfurization to reduce SO2 emissions in flue gas; the waste stone powder refers to a powder formed by grinding a mixture of various materials such as dolomite, quartzite, and coal gangue, and its calcium oxide content is about 30%.
[0003] When storing waste stone powder, it is usually transported to the storage bin by pneumatic conveying. Since the volume and mass of the waste stone powder are small, some of the powder will diffuse and float after passing through the pneumatic conveying pipeline into the storage bin. When a large amount of powder floats in the closed storage bin, dust spraying is likely to occur. In current production, a bag dust collector is installed on the storage bin to collect the floating powder. However, when the powder collected in the bag dust collector falls back into the storage bin after blowing, the powder usually falls freely, and some of the powder will still disperse again during this process. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a waste stone powder storage bin with a simple structure and slow dust falling to reduce dust flying in view of the above-mentioned deficiencies of the prior art.
[0005] The technical solution of the utility model is realized as follows: A waste stone powder storage bin that reduces dust flying includes a bin body with an inverted conical bottom. A cover plate is provided at the upper end of the bin body, and a bag dust collector is provided on the cover plate. A material passing through hole that cooperates with the bag dust collector is provided on the cover plate; an inclined blanking plate is provided in the bin body below the material passing through hole through a mounting cross beam, and the lower end of the blanking plate cooperates with the conical inner wall of the bin body.
[0006] In the above-mentioned waste stone powder storage bin that reduces dust flying, the width of the blanking plate below the material passing through hole is slightly larger than the size of the material passing through hole by 5 - 10 cm, and the projection of the blanking plate on the horizontal plane is trapezoidal and the width gradually increases from top to bottom.
[0007] In the above-mentioned waste stone powder storage bin that reduces dust flying, the blanking plate includes a straight line segment arranged obliquely, and the angle α between the straight line segment and the vertical plane is 30 - 45°; an arc segment that is tangent to the straight line segment is connected to the lower end of the straight line segment, and the lower end of the arc segment gradually becomes gentle.
[0008] In the above-mentioned waste rock powder storage bin for reducing dust flying, a feed channel is provided between the upper end of the feed plate and the feed through hole, and the width of the feed channel gradually increases from top to bottom; a number of downwardly inclined guide plates are evenly distributed vertically on the inner wall of the feed channel, and the angle β between the guide plate located at the uppermost end and the horizontal plane is 60-80°.
[0009] In the above-mentioned waste rock powder storage bin for reducing flying dust, an inspection port is provided on the cover plate, and a sealing cover is provided on the inspection port.
[0010] After the utility model adopts the above structure, when the powder falls from the bag dust collector, it slides down along the inclined feeding plate and the tapered inner wall of the bin in sequence, avoiding the free fall of the powder in the bin, and effectively reducing the powder from scattering during the falling process. In addition, the powder collides and turns at least twice on the way through the inclined feeding plate and the tapered inner wall of the bin, which can slow down the sliding speed and effectively reduce the powder from being lifted up due to the excessive sliding speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 It is a structural schematic diagram of the blanking plate of the utility model;
[0014] Figure 3 It is a partial structural schematic diagram of A of the utility model.
[0015] In the figure: 1. Bin body; 2. Cover plate; 3. Bag dust collector; 4. Feeding hole; 5. Mounting beam; 6. Unloading plate; 6a. Straight section; 6b. Arc section; 7. Feed channel; 8. Guide plate; 9. Inspection port; 10. Sealing cover. DETAILED DESCRIPTION
[0016] See also Figures 1-3 As shown, the utility model is a waste stone powder storage bin for reducing dust flying, including a bin body 1 with an inverted cone-shaped bottom, a cover plate 2 is provided at the upper end of the bin body 1, a bag dust collector 3 is provided on the cover plate 2, and a material passing through hole 4 matched with the bag dust collector 3 is provided on the cover plate 2; an inclined material discharge plate 6 is provided in the bin body 1 below the material passing through hole 4 through the installation of a crossbeam 5, and the lower end of the material discharge plate 6 is matched with the conical inner wall of the bin body 1. When the powder falls from the bag dust collector, it slides down along the inclined material discharge plate and the conical inner wall of the bin body in turn, avoiding the free fall of the powder in the bin body, which can effectively reduce the powder from floating during the falling process.
[0017] In addition, the powder material collides and turns at least twice on the way of passing through the inclined unloading plate and the conical inner wall of the bin body, which can slow down the sliding speed and effectively reduce the powder material from being lifted up due to the excessively fast sliding speed.
[0018] Anti-leakage baffles are provided on both sides of the unloading plate, and an anti-dust cover is provided on the upper end of the anti-leakage baffle. The unloading plate, the anti-leakage baffle and the anti-dust cover cooperate to form a semi-closed unloading channel, which can effectively prevent dust from being generated during the downward conveying process of the powder.
[0019] In this embodiment, the width of the unloading plate 6 below the material passing hole 4 is slightly larger than the size of the material passing hole 4 by 5-10 cm, and the projection of the unloading plate 6 on the horizontal plane is trapezoidal and the width gradually increases from top to bottom. After adopting this structure, the powder will gradually disperse to both sides during the process of sliding down the unloading plate, so that the powder can fall evenly into the bin.
[0020] In this embodiment, preferably, the unloading plate 6 includes an inclined straight segment 6a, and the angle α between the straight segment 6a and the vertical plane is 30-45°; the lower end of the straight segment 6a is connected to an arc segment 6b tangent to the straight segment 6a, and the lower end of the arc segment 6b is gradually flat. After adopting this structure, the powder falls on the straight segment with a larger inclination angle to accelerate to ensure that it can slide down smoothly on the unloading plate, avoiding the accumulation of powder on the upper end of the unloading plate. When the powder slides down along the gradually flat arc segment, it gradually slows down to avoid too fast speed when the powder leaves the unloading plate and collides with the conical inner wall of the bin body to generate a lot of dust.
[0021] In this embodiment, preferably, a feed channel 7 is provided between the upper end of the feed plate 6 and the feed through hole 4, and the width of the feed channel 7 gradually increases from top to bottom; a plurality of downwardly inclined guide plates 8 are evenly distributed vertically on the inner wall of the feed channel 7, and the angle β between the guide plate 8 at the uppermost end and the horizontal plane is 60-80°. By providing the feed channel, it is ensured that most of the powder can accurately fall onto the feed plate after passing through the feed through hole, and the powder can be prevented from diffusing during the falling process.
[0022] A number of guide plates are arranged in the feed channel to cooperate with each other to form a return cavity. When the powder falling on the unloading plate generates dust, it will collide with the guide plate and enter the guide cavity, and then return to the unloading plate to prevent the dust from flying out from above. At the same time, the angle β between the uppermost guide plate and the horizontal plane is 60-80°, which can ensure that the powder will not be ejected from the feed channel when it falls on the uppermost guide plate.
[0023] Several guide plates on the lower layer are designed to be arc-shaped, and their front ends are located on the same straight line. The upper layer of two adjacent guide plates covers the lower layer. When the powder below is lifted up too much and the lower guide plate cannot block it completely, the upper guide plate can further block it to ensure that the powder will not fly to the feed port at the upper end of the feed channel and leak out.
[0024] In this embodiment, a maintenance opening 9 is provided on the cover plate 2, and a sealing cover 10 is provided on the maintenance opening 9. By providing the maintenance opening, it is convenient to perform maintenance on the interior of the bin body. A corresponding quick-lock assembly is provided on the sealing cover, and its specific structure can adopt conventional techniques that are easily conceivable by those skilled in the art, and will not be elaborated here.
[0025] During operation, the powder floating in the bin body is collected by a bag dust collector. The bag dust collector releases the powder regularly or quantitatively. The powder falls into the feed channel through the material passing through-hole, and the powder slides down into the bottom of the bin body for storage under the guidance of the guide plate, the blanking plate, and the conical inner wall of the bin body in sequence.
[0026] The above-mentioned embodiments are the preferred embodiments of the present invention, which are only used to conveniently illustrate the present invention and do not impose any form of limitation on the present invention. Any person with ordinary knowledge in the technical field to which the present invention pertains, without departing from the technical features of the present invention, uses the technical content disclosed by the present invention to make local modifications or equivalent embodiments of decorations, and without departing from the technical feature content of the present invention, still belongs to the scope of the technical features of the present invention.
Claims
1. A waste rock powder storage bin for reducing dust, comprising a bin body (1) with an inverted cone-shaped bottom, a cover plate (2) being arranged at the upper end of the bin body (1), characterized in that: A bag dust collector (3) is provided on the cover plate (2), and a material passing through hole (4) matching with the bag dust collector (3) is provided on the cover plate (2); an inclined material discharge plate (6) is provided in the bin body (1) below the material passing through hole (4) by means of a mounting crossbeam (5), and the lower end of the material discharge plate (6) matches with the conical inner wall of the bin body (1).
2. A waste rock powder storage bin for reducing dust according to claim 1, characterized in that: The width of the material removal plate (6) below the material passing through hole (4) is slightly larger than the size of the material passing through hole (4) by 5-10 cm. The projection of the material removal plate (6) on the horizontal plane is trapezoidal and its width gradually increases from top to bottom.
3. A waste rock powder storage bin for reducing dust according to claim 1, characterized in that: The blanking plate (6) comprises an inclined straight line segment (6a), wherein the angle α between the straight line segment (6a) and the vertical plane is 30-45°; an arc segment (6b) tangent to the straight line segment (6a) is connected to the lower end of the straight line segment (6a), and the lower end of the arc segment (6b) gradually becomes flat.
4. A waste rock powder storage bin for reducing dust according to claim 1, characterized in that: A feed channel (7) is provided between the upper end of the feed plate (6) and the feed through hole (4), and the width of the feed channel (7) gradually increases from top to bottom; a plurality of downwardly inclined guide plates (8) are evenly distributed vertically on the inner wall of the feed channel (7), and the angle β between the guide plate (8) located at the uppermost end and the horizontal plane is 60-80°.
5. A waste rock powder storage bin for reducing dust according to claim 1, characterized in that: The cover plate (2) is provided with an inspection opening (9), and a sealing cover (10) is provided on the inspection opening (9).