Coal conveying and dust falling device for thermal power generation

Abstract

The utility model relates to the technical field of coal mine dust removal equipment, and particularly discloses a coal conveying and dust falling device for thermal power generation, which comprises a U-shaped frame with a channel area, and the U-shaped frame comprises a top surrounding part positioned above the channel area, and a first side surrounding part and a second side surrounding part positioned on the left side and the right side of the channel area; the atomizing mechanism is arranged on the top surrounding part, and the atomizing mechanism is configured to selectively spray atomized liquid into the channel area; the air supply mechanism is arranged on the first side surrounding part, and the air supply mechanism is constructed to selectively convey air flow into the channel area; according to the device, the dust removal mechanism, the air supply mechanism and the atomization mechanism are arranged, the effective dust removal effect is achieved, meanwhile, the air supply mechanism can blow coal dust raised on the surface of coal to a suspended state through wind power and fuse the coal dust with water mist, large dust particles are formed and transferred to the dust removal mechanism under the action of the wind power, and the dust removal mechanism further collects the coal dust; in this way, coal dust on the surface of coal is actively removed, and therefore the better dust removal effect is achieved.

Description

Technical Field

[0001] This application relates to the field of coal mine dust removal equipment technology, and in particular to a coal transportation dust reduction device for thermal power generation. Background Technology

[0002] In thermal power generation, coal transportation is a crucial link in ensuring the stable operation of the power generation system. Currently, most thermal power plants use conveyor belts to transport coal from the coal storage yard to the boiler combustion system. However,

[0003] This transportation method has obvious dust problems in practical applications. In order to reduce dust, related technologies usually set up water spraying devices at one or more locations near the conveyor belt to suppress dust. If the water spraying volume is large, it will affect the subsequent coal combustion efficiency and increase the water consumption. If the water spraying volume is small, the water will easily evaporate, causing the coal dust on the surface to cause dust again. Utility Model Content

[0004] This application aims to propose a dust suppression device for coal conveying in thermal power plants, in order to solve the dust problem in related technologies when coal is transported by conveyor belt in thermal power plants.

[0005] To achieve the above objectives, this application provides a coal conveying dust suppression device for thermal power generation, comprising:

[0006] A U-shaped frame having a passage area, the U-shaped frame including a top enclosure above the passage area, and a first side enclosure and a second side enclosure located on the left and right sides of the passage area;

[0007] An atomizing mechanism is disposed in the top enclosure, and the atomizing mechanism is configured to selectively spray atomizing liquid into the channel area;

[0008] An air supply mechanism is disposed on the first side enclosure, and the air supply mechanism is configured to selectively deliver airflow into the channel area;

[0009] A dust removal mechanism is disposed on the second side enclosure, the dust removal mechanism being at least partially located within the radiation area of ​​the airflow, and the dust removal mechanism being configured to remove dust from the airflow.

[0010] In some embodiments, the atomizing mechanism includes an atomizing delivery pipe disposed on the top portion and an atomizing nozzle connected to the atomizing delivery pipe, wherein the atomizing nozzle is located within the channel area.

[0011] In some embodiments, a plurality of atomizing nozzles are spaced apart on the top portion near the channel area, and each atomizing nozzle is connected to the atomizing delivery pipe.

[0012] In some embodiments, the air supply mechanism includes:

[0013] A partition panel is provided on the first side enclosure, and multiple partition panels are arranged to form an air duct that communicates with the passage area;

[0014] An air supply duct is connected to the enclosure panel, wherein the air outlet of the air supply duct is located inside the air duct.

[0015] In some embodiments, the air supply mechanism further includes a hood disposed within the air duct and connected to the air outlet of the air supply pipe, the hood facing the channel area.

[0016] In some embodiments, the second side enclosure is provided with an air outlet communicating with the channel area, and the dust removal mechanism is disposed at the air outlet.

[0017] In some embodiments, the dust removal mechanism includes a box body disposed below the air outlet and having a top opening, side plates spaced apart on both sides of the box body, a screen connected to the side plates and covering the air outlet, and a brush assembly disposed at the air outlet for scraping the screen.

[0018] In some embodiments, the housing, the side panel, the screen, and the brush assembly are disposed on the side of the second side enclosure opposite to the channel area.

[0019] In some embodiments, the brush assembly includes a drive motor disposed on the first side portion, a lead screw tractor connected to the drive motor, a ball nut sleeved on the lead screw, and a brush plate disposed on the ball nut, wherein the brush portion of the brush plate faces the screen.

[0020] In some embodiments, the projected profile of the screen along the vertical direction at least partially covers the opening profile of the box.

[0021] Compared with the prior art, the technical solutions provided by the above embodiments of this application have at least the following beneficial effects:

[0022] The dust suppression device of this application comprises a U-shaped frame, an atomizing mechanism, an air supply mechanism, and a dust removal mechanism. The U-shaped frame has a top enclosure and two side enclosures, forming a channel area. The top enclosure is equipped with an atomizing mechanism, while the side enclosures of the U-shaped frame are respectively equipped with an air supply mechanism and a dust removal mechanism. The channel area is used for conveyor belts to transport coal. During the coal transport process, the atomizing nozzles of the atomizing mechanism spray the channel area, thereby suppressing coal dust and, in conjunction with the air supply mechanism, achieving more efficient dust removal. Specifically, the air supply mechanism uses wind power to blow coal dust that has not yet been lifted from the coal surface into a suspended state, where it merges with water mist to form larger dust particles, which are then transferred to the dust removal mechanism by the wind. The dust removal mechanism further collects the coal dust, thus further removing coal dust from the coal surface and achieving a better dust removal effect.

[0023] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the dust suppression device applied according to the embodiments of this application;

[0026] Figure 2 This is a first-view structural schematic diagram of the dust suppression device according to an embodiment of this application;

[0027] Figure 3 This is a structural schematic diagram of the dust suppression device according to an embodiment of this application from a second perspective;

[0028] Figure 4 This is a third-view structural schematic diagram of the dust suppression device according to an embodiment of this application;

[0029] Figure 5 It is based on Figure 2 A magnified view of part A in the diagram.

[0030] Figure label:

[0031] 100. U-shaped frame;

[0032] 110. Top section; 120. First side section; 130. Second side section;

[0033] 140. Support leg; 141. Casters;

[0034] 200. Atomizing mechanism; 210. Atomizing delivery pipe; 220. Atomizing nozzle;

[0035] 300. Air supply mechanism; 310. Enclosure panel; 320. Air hood; 330. Air supply duct;

[0036] 400. Dust removal mechanism; 410. Box body; 420. Side plate; 430. Filter screen; 440. Scraper assembly; 441. Drive motor; 442. Lead screw; 443. Ball nut; 444. Brush plate;

[0037] X, first direction; Z, second direction. Detailed Implementation

[0038] The embodiments of this application are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application.

[0039] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. "Multiple" means at least two, that is, two or more; "multiple" means at least two, that is, two or more.

[0040] In this application, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments.

[0043] Please see Figures 1 to 3 This embodiment provides a coal conveying dust suppression device 10 for thermal power generation. The dust suppression device 10 is used in thermal power plants for dust suppression via conveyor belts transporting coal. The dust suppression device 10 includes a U-shaped frame 100 with a channel area, an atomizing mechanism 200, an air supply mechanism 300, and a dust removal mechanism 400. The U-shaped frame 100 includes a top enclosure 110 above the channel area and first side enclosures 120 and second side enclosures 130 on the left and right sides of the channel area. The atomizing mechanism 200 is disposed in the top enclosure 110 and is configured to selectively spray atomized liquid into the channel area. The air supply mechanism 300 is disposed in the first side enclosure 120 and is configured to selectively supply airflow into the channel area. The dust removal mechanism 400 is disposed in the second side enclosure 130 and is at least partially located within the radiation area of ​​the airflow. The dust removal mechanism 400 is configured to remove dust from the airflow.

[0044] In some embodiments, the passage area is used to avoid the conveyor belt transporting coal, so that the U-shaped frame 100 semi-encloses the coal on the conveyor belt. When the coal on the conveyor belt is transported through the passage area, the atomizing mechanism 200 located in the top enclosure 110 can reduce dust on the coal surface, and the air supply mechanism 300 located in the first side enclosure 120 can supply airflow to the coal surface, so that more coal dust on the coal surface floats and merges with water mist and is blown into the dust removal mechanism 400. The dust removal mechanism 400 further collects the coal dust, thereby achieving effective dust reduction. At the same time, it can also further treat and remove coal powder on the coal surface. Compared with the prior art, which only sprays water to the coal to raise dust without actually treating the coal surface, it achieves a better dust removal effect.

[0045] The structure and working principle of the above-mentioned U-shaped frame 100, atomizing mechanism 200, air supply mechanism 300 and dust removal mechanism 400 will be further described below with reference to several embodiments.

[0046] like Figure 2As shown, for ease of description, the direction in which the conveyor belt passes through the U-shaped frame 100 is defined as the first direction X, and the height direction of the U-shaped frame 100 is defined as the second direction Z. It should be noted that the first direction X and the second direction Z are only used to describe the structure of the dust suppression device 10 and do not limit the structure of the dust suppression device 10. The top enclosure 110 and the first side enclosure 120 and the second side enclosure 130 located on the left and right sides of the channel area can be an integral design. The first side enclosure 120 and the second side enclosure 130 of the U-shaped frame 100 can be arranged in parallel and spaced apart. Support legs 140 and casters 141 can be provided at the bottom of the first side enclosure 120 and the second side enclosure 130. Multiple support legs 140 can be arranged at intervals along the first direction X. Each support leg 140 is provided with a caster 141 at its bottom. The arrangement of support legs 140 and casters 141 facilitates the transfer of the dust suppression device 10.

[0047] Optionally, the support leg 140 can be configured as a height-adjustable structure, for example, by being configured as a telescopic rod structure, so as to be suitable for conveyor belts of different heights.

[0048] In some embodiments, combined with Figure 3 The atomizing mechanism 200 of the top enclosure 110 may include an atomizing delivery pipe 210 disposed on the top enclosure 110 and an atomizing nozzle 330 connected to the atomizing delivery pipe 210. The atomizing nozzle 330 is located in the channel area. One end of the atomizing delivery pipe 210 may be connected to an additionally disposed water pump (not shown in the figure), and the other end of the atomizing delivery pipe 210 may pass through the top enclosure 110 and connect to the atomizing nozzle 330 in the channel area. The water pump and the atomizing nozzle 330 may be obtained from the prior art as needed. Their specific structure and functional implementation principle will not be described in detail here.

[0049] Optionally, the atomizing nozzle 330 sprays along the second direction Z. The atomizing nozzle 330 can be set in groups of three along the first direction X, thus increasing the spray area and achieving a better dust suppression effect. Of course, other array configurations are also possible, and there are no restrictions here. The specific configuration can be selected according to actual needs.

[0050] Please see Figure 4 The first side enclosure 120 is provided with an opening communicating with the passage area. The air supply mechanism 300 is provided at the opening. The air supply mechanism 300 includes a enclosure plate 310, an air supply pipe 330 and a fan hood 320. The enclosure plate 310 is provided on the surface of the first side enclosure 120 away from the passage area, and multiple enclosure plates 310 are arranged to form an air duct communicating with the passage area. The air supply pipe 330 is connected to the enclosure plate 310. The air outlet end of the air supply pipe 330 is located in the air duct. The fan hood 320 is provided in the air duct and connected to the air outlet end of the air supply pipe 330. The fan hood 320 faces the passage area.

[0051] It should be noted that the hood 320 can be set in a trumpet shape, or other shapes. The arrangement of the enclosure 310 and the hood 320 can make the airflow output by the air supply pipe 330 more concentrated, thus making better use of coal dust removal. The enclosure 310, the air supply pipe 330 and the hood 320 are set on the surface of the first side enclosure 120 away from the passage area, which can avoid occupying the passage area.

[0052] It should also be noted that the other end of the air supply pipe 330 is connected to an air pump device (not shown in the figure). The air pump device is used to provide pressurized airflow. Of course, the size of the airflow needs to be compatible with the water mist sprayed by the atomizing nozzle 220. Specifically, the water mist sprayed by the atomizing nozzle 220 should be able to mix with the suspended coal dust before being blown into the dust removal mechanism 400, rather than being directly blown to the second side enclosure 130 on one side by the airflow. This can be achieved by adjusting the water pressure of the atomizing mechanism 200 and / or adjusting the airflow rate of the air supply mechanism 300.

[0053] Please see Figure 5 The second side enclosure 130 is provided with an air outlet communicating with the channel area. The dust removal mechanism 400 is provided at the air outlet. The dust removal mechanism 400 includes a box 410 provided below the air outlet and having a top opening, side plates 420 spaced apart on both sides of the box 410, a screen 430 connected to the side plates 420 and covering the air outlet, and a brush assembly 440 provided at the air outlet for scraping the screen 430.

[0054] In some embodiments, the box body 410, side plate 420, screen 430 and brush assembly 440 are disposed on the side of the second side enclosure 130 away from the channel area. The brush assembly 440 includes a drive motor 441 disposed on the first side enclosure 120, a lead screw 442 that is hygienically connected to the drive motor 441, a ball nut 443 sleeved on the lead screw 442 and a brush plate 444 disposed on the ball nut 443, wherein the brush portion of the brush plate 444 faces the screen 430.

[0055] With this setup, the screen 430 can effectively intercept coal dust particles that are mixed with water mist. Furthermore, the brush plate 444 scrapes the coal dust on the screen 430, causing the moistened coal dust particles to fall into the box 410, thereby achieving coal dust collection.

[0056] Optionally, the brush plate 444 can be configured to be distributed along the first direction X in the length direction. The two ends of the brush plate 444 can extend along the first direction X to both sides of the screen 430. The two side plates 420 are spaced apart and connected to the second side enclosure and the top of the box body 410 respectively. The screen 430 covers the area between the two side plates 420, thereby covering the air outlet. The projection outline of the screen 430 in the vertical direction at least partially covers the opening outline of the box body 410, so that more coal powder particles scraped by the brush plate 444 on the screen 430 fall into the box body 410.

[0057] Of course, it should be noted that the drive motor 441, lead screw 442, and ball nut 443 can be obtained from existing technologies, and their specific structure and functional implementation principle will not be elaborated here.

[0058] In the above embodiment, the dust suppression device 10 comprises a U-shaped frame 100, an atomizing mechanism 200, an air supply mechanism 300, and a dust removal mechanism 400. The U-shaped frame 100 has a top portion and two side portions forming a channel area. The top portion is equipped with the atomizing mechanism. The side portions of the U-shaped frame 100 are respectively equipped with the air supply mechanism 300 and the dust removal mechanism 400. The channel area is used for conveyor belts to transport coal. During the coal transport process, the atomizing nozzles 220 of the atomizing mechanism 200 spray dust onto the channel area. Spraying serves two purposes: firstly, it suppresses coal dust; secondly, it works in conjunction with the air supply mechanism 300 to achieve more efficient dust removal. Specifically, the air supply mechanism 300 uses wind power to blow coal dust that has not yet been lifted from the coal surface into a suspended state, where it mixes with the water mist to form larger dust particles. These particles are then transferred to the dust removal mechanism 400 by the wind, where the dust removal mechanism 400 further collects the coal dust. This process effectively removes coal dust from the coal surface, preventing the water mist from evaporating and causing the surface dust to be re-raised, thus achieving a better dust removal effect.

[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0061] Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The reference to "embodiment" herein means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily indicate the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0062] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A coal dusting device for use in thermal power generation, characterized by comprising: include: A U-shaped frame having a passage area, the U-shaped frame including a top enclosure above the passage area, and a first side enclosure and a second side enclosure located on the left and right sides of the passage area; An atomizing mechanism is disposed in the top enclosure, and the atomizing mechanism is configured to selectively spray atomizing liquid into the channel area; An air supply mechanism is disposed on the first side enclosure, and the air supply mechanism is configured to selectively deliver airflow into the channel area; A dust removal mechanism is disposed on the second side enclosure, the dust removal mechanism being at least partially located within the radiation area of ​​the airflow, and the dust removal mechanism being configured to remove dust from the airflow.

2. The coal dusting device for thermal power generation according to claim 1, characterized by The atomizing mechanism includes an atomizing delivery pipe disposed on the top circumference and an atomizing nozzle connected to the atomizing delivery pipe, wherein the atomizing nozzle is located within the channel area.

3. The coal dusting device for thermal power generation according to claim 2, characterized by Multiple atomizing nozzles are spaced apart on the top portion near the channel area, and each atomizing nozzle is connected to the atomizing delivery pipe.

4. The coal dusting device for thermal power plants according to claim 1, characterized in that, The air supply mechanism includes: A partition panel is provided on the first side enclosure, and multiple partition panels are arranged to form an air duct that communicates with the passage area; An air supply duct is connected to the enclosure panel, wherein the air outlet of the air supply duct is located inside the air duct.

5. The coal dusting device for thermal power plants according to claim 4, characterized by The air supply mechanism also includes a hood disposed in the air duct and connected to the air outlet of the air supply pipe, the hood facing the channel area.

6. The dust suppression device for coal transportation in thermal power generation according to claim 1, characterized in that, The second side enclosure is provided with an air outlet that communicates with the channel area, and the dust removal mechanism is located at the air outlet.

7. The coal dusting device for thermal power plants according to claim 6, characterized by The dust removal mechanism includes a box body disposed below the air outlet and having a top opening, side plates spaced apart on both sides of the box body, a screen connected to the side plates and covering the air outlet, and a brush assembly disposed at the air outlet for scraping the screen.

8. The coal dusting device for thermal power plants according to claim 7, characterized in that, The box body, the side plate, the screen, and the brush assembly are disposed on the side of the second side enclosure away from the channel area.

9. The dust suppression device for coal transportation in thermal power generation according to claim 7 or 8, characterized in that, The brush assembly includes a drive motor disposed on the first side panel, a lead screw connected to the drive motor, a ball nut sleeved on the lead screw, and a brush plate disposed on the ball nut, wherein the brush portion of the brush plate faces the screen.

10. The coal dusting device for thermal power generation according to claim 9, characterized by The projection outline of the screen along the vertical direction at least partially covers the opening outline of the box.

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