Dust falling device applied to pebble coal cinder bin

Abstract

The invention provides a dust falling device applied to a pebble coal cinder bin. The dust falling device comprises a water spraying pipeline and nozzles. The water spraying pipeline is annular, a slag discharging opening of a slag discharging pipeline of the pebble coal slag bin is located on the inner side of the lower portion of the water spraying pipeline, and a preset distance is formed between the slag discharging opening and the water spraying pipeline; the multiple nozzles are arranged on the lower side of the water spraying pipeline at intervals in the circumferential direction of the water spraying pipeline. Water sprayed by all the nozzles surrounds the slag discharging opening to form water mist which is sprayed downwards, and the water mist is mixed with flying dust in the slag discharging process. The water mist spraying device has the technical effects that water mist can be uniformly sprayed to dust points, dust flying is effectively inhibited, and the dust flying problem in the slag discharging process can be directly solved from the source.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mill slag discharge, and in particular relates to a dust suppression device applied to a stone coal slag bin. Background Art

[0002] The medium-speed coal mill adopts a positive pressure cold primary air direct blowing pulverizing system. The coal mill slag discharge system adopts a pebble coal negative pressure pneumatic conveying system to discharge the pebble coal generated during the operation of the medium-speed coal mill. The pebble coal is discharged through the slag discharge door and falls into the pebble coal hopper, and then enters the conveying pipeline through the pneumatic feeder, and is transported into the pebble coal slag bin for separation. The dust-containing gas after separation enters the dust removal system for dust removal, and then is discharged into the atmosphere through the Roots blower, while the separated pebble coal waits in the pebble coal slag bin for unloading and transportation by car.

[0003] The separation principle in the stone coal slag bin is that the filtered stone coal remains in the stone coal slag bin, and the separated dust-containing gas is discharged into the atmosphere. However, during the separation process, the stone coal and the dust cannot be separated 100%, and the dust attached to the stone coal cannot be filtered. Therefore, dust will be generated during the slag unloading process. If people work at a work site with serious dust pollution for a long time, their lives and health will be seriously endangered, and dust falling on machine parts will accelerate the wear of rotating parts.

[0004] Therefore, there is an urgent need for a dust suppression device for use in a gravel slag bin to reduce dust pollution during the slag unloading process. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art and provide a new technical solution for a dust reduction device applied to a gravel and coal slag silo.

[0006] According to a first aspect of the present application, there is provided a dust suppression device applied to a gravel and coal slag bin, comprising a water spraying pipe and a nozzle;

[0007] The water spray pipe is annular, the slag discharge port of the slag discharge pipe of the stone coal slag bin is located at the lower inner side of the water spray pipe, and there is a preset distance between the slag discharge port and the water spray pipe;

[0008] A plurality of the nozzles are arranged at intervals along the circumference of the water spraying pipe on the lower side of the water spraying pipe; the water sprayed by each nozzle forms a water mist sprayed downward around the slag unloading port to mix with the dust generated during the slag unloading process.

[0009] Optionally, the vertical distance between the slag discharge port and the water spray pipe is 10 cm, and the horizontal distance between the slag discharge port and the water spray pipe is 20 cm.

[0010] Optionally, the dust suppression device applied to the gravel and coal slag bin further includes a water supply pipeline;

[0011] The water supply pipe is communicated with the water spray pipe to supply water to the water spray pipe.

[0012] Optionally, the water supply pipeline includes a first water supply port and a second water supply port;

[0013] The first water supply port and the second water supply port are respectively connected to the water spray pipe, and the first water supply port and the second water supply port are respectively located at two opposite sides of the water spray pipe.

[0014] Optionally, the central axis of the slag discharge port coincides with the central axis of the water spray pipe.

[0015] Optionally, the dust suppression device applied to the stone coal slag bin further includes a slag discharge door;

[0016] The slag discharge door is arranged on a side of the slag discharge pipe away from the slag discharge port.

[0017] Optionally, the dust suppression device applied to the stone and coal slag bin further includes a main pipe;

[0018] One end of the mother pipe is connected to the top of the pebble coal slag bin and is used for conveying pebble coal to the pebble coal slag bin.

[0019] Optionally, the dust suppression device applied to the stone coal slag bin also includes a plurality of coal mill slag boxes;

[0020] A plurality of coal mill slag boxes are all connected to the main pipe.

[0021] Optionally, the number of the coal mill slag boxes is five.

[0022] Optionally, the dust suppression device applied to the stone and coal slag bin further includes a first Roots blower and a second Roots blower;

[0023] The first Roots blower and the second Roots blower are respectively connected to the top of the stone and slag bin.

[0024] A technical effect of this application is:

[0025] In the embodiment of the present application, the dust suppression device applied to the stone coal slag bin has a reasonable structural design. During the slag unloading process, the water spray from each nozzle forms a water mist sprayed downward around the slag unloading port to mix with the dust in the slag unloading process, and the water mist can be evenly sprayed on the dust generating point, effectively suppressing the flying of dust, and directly solving the dust problem in the slag unloading process from the source. It has a more significant effect on dust control in thermal power plants, can more effectively suppress dust and improve the working environment, and has a lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a schematic structural diagram of a dust suppression device applied to a gravel and coal slag bin from a first perspective according to an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a dust suppression device applied to a gravel and coal slag bin from a second perspective according to an embodiment of the present invention;

[0028] Figure 3 The present invention is a schematic diagram of the overall structure of a dust suppression device applied to a gravel and coal slag silo according to an embodiment of the present invention.

[0029] In the figure: 1, water spray pipe; 2, nozzle; 300, stone coal slag bin; 3, slag discharge pipe; 31, slag discharge port; 4, water supply pipe; 41, first water supply port; 42, second water supply port; 5, slag discharge door; 6, main pipe; 7, coal mill slag box; 81, first Roots blower;

[0030] 811, first inlet; 82, second Roots blower; 821, second inlet; 9, air lock;

[0031] 10. Coal mill. DETAILED DESCRIPTION

[0032] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0033] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0034] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this application, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] According to one aspect of the present application, see Figures 1 to 3 , a dust suppression device applied to a gravel slag bin is provided, comprising a water spraying pipe 1 and a nozzle 2;

[0038] The water spray pipe 1 is annular, and the slag discharge port 31 of the slag discharge pipe 3 of the stone coal slag bin 300 is located at the lower inner side of the water spray pipe 1, and there is a preset distance between the slag discharge port 31 and the water spray pipe 1;

[0039] The plurality of nozzles 2 are arranged at intervals along the circumference of the water spraying pipe 1 on the lower side of the water spraying pipe 1 ; the water sprayed by each nozzle 2 forms a water mist sprayed downward around the slag discharge port 31 to mix with the dust generated during the slag discharge process.

[0040] In the embodiment of the present application, the dust suppression device applied to the stone coal slag bin has a reasonable structural design. During the slag unloading process, the water sprayed by each nozzle 2 forms a water mist sprayed downward around the slag unloading port 31 to mix with the dust in the slag unloading process, and the water mist can be evenly sprayed on the dust generating point, effectively suppressing the flying of dust, and directly solving the dust problem in the slag unloading process from the source. It has a more significant effect on dust control in thermal power plants, can more effectively suppress dust and improve the working environment, and has a lower cost.

[0041] Optionally, the vertical distance between the slag discharge port and the water spraying pipe is 10 cm, and the horizontal distance between the slag discharge port and the water spraying pipe is 20 cm. This allows the water spray from each nozzle 2 to form a downward spraying water mist around the slag discharge port 31, which can be well mixed with the dust in the slag discharge process, thereby better solving the dust problem.

[0042] Optionally, the dust suppression device applied to the gravel and coal slag bin further includes a water supply pipe 4;

[0043] The water supply pipe 4 is communicated with the water spray pipe 1 to supply water to the water spray pipe 1 .

[0044] In the above-mentioned embodiment, water can be stably supplied to the water spray pipe 1 through the water supply pipe 4 .

[0045] Optionally, the water supply pipeline 4 includes a first water supply port 41 and a second water supply port 42;

[0046] The first water supply port 41 and the second water supply port 42 are respectively connected to the water spraying pipe 1 , and the first water supply port 41 and the second water supply port 42 are respectively located at two opposite sides of the water spraying pipe 1 .

[0047] In the above embodiment, the first water supply port 41 and the second water supply port 42 can better ensure the stability of water spraying from the water spraying pipe 1, thereby ensuring that the water sprayed by each nozzle 2 can form a water mist spraying downward around the slag discharge port 31.

[0048] Optionally, the central axis of the slag discharge port 31 coincides with the central axis of the water spraying pipe 1. This enables the water mist to be fully mixed with the dust, thereby better solving the dust problem.

[0049] Optionally, the dust suppression device applied to the stone coal slag bin further includes a slag discharge door 5;

[0050] The slag discharge door 5 is provided on the side of the slag discharge pipe 3 away from the slag discharge port 31. The slag discharge door 5 can ensure the controllability of the slag discharge process.

[0051] Optionally, the dust suppression device applied to the stone and coal slag bin further includes a main pipe 6;

[0052] One end of the mother pipe 6 is connected to the top of the pebble coal slag bin 300 for conveying pebble coal to the pebble coal slag bin 300 .

[0053] In the above embodiment, the main pipe 6 can be used to transport the pebble coal from the coal mill slag box 7 to the pebble coal slag bin 300 .

[0054] Optionally, the dust suppression device applied to the stone coal slag bin further includes a plurality of coal mill slag boxes 7;

[0055] A plurality of coal mill slag boxes 7 are all connected to the main pipe 6 .

[0056] In the above embodiment, a plurality of coal mill slag boxes 7 are connected to the main pipe 6, and the pebble coal in the plurality of coal mill slag boxes 7 are gathered into a pebble coal slag bin 300, so as to facilitate the separation and transportation of the pebble coal.

[0057] Optionally, the present application has five coal mills 10, each of which corresponds to one coal mill slag box 7, that is, the number of coal mill slag boxes 7 is five. This makes the number of coal mill slag boxes 7 designed more reasonably.

[0058] Optionally, the dust suppression device applied to the stone and coal slag bin further includes a first Roots blower 81 and a second Roots blower 82;

[0059] The first Roots blower 81 and the second Roots blower 82 are respectively connected to the top of the stone and slag bin 300 .

[0060] In the above embodiment, the first Roots blower 81 and the second Roots blower 82 can separate the dust of the pebble coal in the pebble coal slag bin 300 .

[0061] Exemplarily, the dust reduction device applied to the gravel and coal slag bin also includes a first pipe and a second pipe, the first inlet 811 of the first Roots blower 81 is connected to the gravel and coal slag bin 300 through the first pipe, and the second inlet 821 of the second Roots blower 82 is connected to the gravel and coal slag bin 300 through the second pipe.

[0062] In a specific embodiment, a plurality of air locks 9 are provided on the gas-solid separation pipeline at the top of the pebble coal slag bin 300 to ensure the separation effect of gas dust and pebble coal in the pebble coal slag bin 300 .

[0063] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A dust suppression device applied to a stone slag silo, characterized in that: Includes water spray pipes and nozzles; The water spray pipe is annular, the slag discharge port of the slag discharge pipe of the stone coal slag bin is located at the lower inner side of the water spray pipe, and there is a preset distance between the slag discharge port and the water spray pipe; A plurality of the nozzles are arranged at intervals along the circumference of the water spraying pipe on the lower side of the water spraying pipe; the water sprayed by each nozzle forms a water mist sprayed downward around the slag unloading port to mix with the dust generated during the slag unloading process.

2. The dust suppression device for gravel and slag silo according to claim 1 is characterized in that: The vertical distance between the slag discharge port and the water spray pipe is 10 cm, and the horizontal distance between the slag discharge port and the water spray pipe is 20 cm.

3. The dust suppression device for use in a gravel and coal slag silo according to claim 1, characterized in that: It also includes water supply pipes; The water supply pipe is communicated with the water spray pipe to supply water to the water spray pipe.

4. The dust suppression device for use in a gravel and coal slag silo according to claim 3, characterized in that: The water supply pipeline includes a first water supply port and a second water supply port; The first water supply port and the second water supply port are respectively connected to the water spray pipe, and the first water supply port and the second water supply port are respectively located at two opposite sides of the water spray pipe.

5. The dust suppression device for use in a gravel and coal slag silo according to claim 1, characterized in that: The central axis of the slag discharge port coincides with the central axis of the water spraying pipe.

6. The dust suppression device for use in a gravel and coal slag silo according to claim 1, characterized in that: It also includes a slag discharge door; The slag discharge door is arranged on a side of the slag discharge pipe away from the slag discharge port.

7. The dust suppression device for use in a stone and coal slag silo according to claim 1, characterized in that: Also includes the mother tube; One end of the mother pipe is connected to the top of the pebble coal slag bin and is used for conveying pebble coal to the pebble coal slag bin.

8. The dust suppression device for use in a stone and coal slag silo according to claim 7, characterized in that: Also included are multiple coal mill slag boxes; A plurality of coal mill slag boxes are all connected to the main pipe.

9. The dust suppression device for use in a stone and coal slag silo according to claim 8, characterized in that: The number of the coal mill slag boxes is five.

10. The dust suppression device for use in a gravel and coal slag silo according to claim 1, characterized in that: Also includes a first Roots blower and a second Roots blower; The first Roots blower and the second Roots blower are respectively connected to the top of the stone and slag bin.

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