Coal blending device for coal-fired power plant

Abstract

The utility model provides a kind of coal blending device of coal-fired power plant, it is related to the technical field of coal blending equipment.The coal blending device of coal-fired power plant includes coal blending pipeline, cover, cleaning flow guide component and conveyer belt;The coal blending pipeline is equipped with feed pipe and discharge pipe;Conveyer belt is set in coal blending pipeline;Feed pipe is located above conveyer belt, and discharge pipe is located below conveyer belt;Cover is detachably installed in both ends of coal blending pipeline;Cleaning flow guide component includes deflector, spring and fixed base;Deflector includes arc section and straight plate part;Arc section is fixedly connected with discharge pipe in one end, and it is fixedly connected with the inner wall of coal blending pipeline, and its other end is fixedly connected with straight plate part;Fixed base is fixedly connected with the inner wall of coal blending pipeline;Straight plate part is equipped with brush.The coal blending device of coal-fired power plant solves the technical problem that coal powder is easily accumulated in the coal blending pipeline below conveyer belt in the coal blending device of existing coal-fired power plant, and it needs to be cleaned frequently.

Description

Technical Field

[0001] This utility model relates to the technical field of coal blending equipment, and in particular to a coal blending device for a coal-fired power plant. Background Technology

[0002] Large coal-fired power plants need to purchase different types of coal with high and low calorific values ​​in order to reduce power generation costs, and then blend them as needed.

[0003] Existing coal-fired power plant coal blending systems include two primary coal bunkers, a secondary coal bunker, and a blending channel. The secondary coal bunker is located between the two primary coal bunkers. The primary coal bunker has a primary unloading pipe connected to the blending channel. The secondary coal bunker has a secondary unloading pipe and a third unloading pipe, both of which are connected to the blending channel. The blending channel contains two conveyor belts and three discharge pipes, which connect to corresponding numbers of coal feeders. In actual blending processes, coal dust easily adheres to the conveyor belts within the blending channel. During rotation, coal dust tends to accumulate in the blending channel below the conveyor belts, requiring frequent cleaning.

[0004] In the process of implementing this embodiment, the inventors discovered at least the following problems:

[0005] In existing coal-fired power plants, coal dust tends to accumulate in the coal blending pipes below the conveyor belt, requiring frequent cleaning. Utility Model Content

[0006] The purpose of this utility model is to provide a coal blending device for coal-fired power plants, which solves the technical problem that coal dust easily accumulates in the coal blending pipes below the conveyor belt in existing coal-fired power plant coal blending devices, requiring frequent cleaning.

[0007] Utility model solution:

[0008] This utility model provides a coal blending device for a coal-fired power plant, including a coal blending pipeline, a cover, a cleaning and guiding assembly, and a conveyor belt. The coal blending pipeline has an inlet pipe and an outlet pipe. The conveyor belt is disposed inside the coal blending pipeline. The inlet pipe is located above the conveyor belt, and the outlet pipe is located below the conveyor belt. The cover is detachably installed at both ends of the coal blending pipeline. The cleaning and guiding assembly includes a guide plate, a spring, and a fixing seat. The guide plate includes an arc-shaped portion and a straight plate portion. One end of the arc-shaped portion is fixedly connected to the outlet pipe and to the inner wall of the coal blending pipeline, and the other end is fixedly connected to the straight plate portion. The fixing seat is fixedly connected to the inner wall of the coal blending pipeline. One end of the spring is fixedly connected to the bottom of the straight plate portion, and the other end is fixedly connected to the fixing seat. The straight plate portion is provided with a brush.

[0009] Furthermore, the coal blending pipeline is provided with an entrance; the coal blending pipeline is equipped with a switch door, which is located at the entrance.

[0010] Furthermore, the coal distribution pipeline is equipped with a door frame, which is located inside the doorway, and the door is equipped with a first handle.

[0011] Furthermore, the cover is provided with a flow-blocking part, which is located inside the coal distribution pipeline.

[0012] Furthermore, the cover is provided with a second handle.

[0013] Beneficial effects:

[0014] This invention provides a coal blending device for a coal-fired power plant. During the operation of the conveyor belt, the bottom of the conveyor belt contacts a brush. Due to the gap between the straight plate section and the coal blending pipe, the straight plate section is movable. Supported by springs and through the dynamic contact between the conveyor belt and the brush, the brush vibrates and cleans the coal dust from the bottom of the conveyor belt, causing the coal dust to slide from the curved section into the discharge pipe. This prevents coal dust from accumulating in the coal blending pipe below the conveyor belt. Therefore, this coal blending device for a coal-fired power plant eliminates the need for frequent cleaning of the coal dust in the coal blending pipe below the conveyor belt. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the coal blending device for a coal-fired power plant provided in this embodiment;

[0017] Figure 2 This is a cross-sectional view of the coal blending device of a coal-fired power plant provided in this embodiment;

[0018] Figure 3 This is a structural schematic diagram of the coal blending device of a coal-fired power plant provided in this embodiment.

[0019] Figure 4 This is a schematic diagram of the coal blending device of a coal-fired power plant provided in this embodiment.

[0020] icon:

[0021] 100 - Coal blending pipe; 110 - Feed pipe; 120 - Discharge pipe; 130 - Doorway; 140 - Door opening / closing; 150 - Door frame; 160 - First handle;

[0022] 200 - Cover; 210 - Flow-blocking part; 220 - Second handle;

[0023] 300 - Cleaning guide assembly; 310 - Guide plate; 311 - Arc-shaped part; 312 - Straight plate part; 320 - Spring; 330 - Mounting base; 340 - Brush;

[0024] 400 - Conveyor belt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] Furthermore, terms such as "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0031] This embodiment provides a coal blending device for a coal-fired power plant. Please refer to... Figure 1-4 As shown, the system includes a coal blending pipe 100, a cover 200, a cleaning and guiding assembly 300, and a conveyor belt 400. The coal blending pipe 100 is equipped with an inlet pipe 110 and an outlet pipe 120. The conveyor belt 400 is disposed within the coal blending pipe 100. The inlet pipe 110 is located above the conveyor belt 400, and the outlet pipe 120 is located below the conveyor belt 400. The cover 200 is detachably installed at both ends of the coal blending pipe 100. The cleaning and guiding assembly 300 includes a guide plate 310 and a spring 32. 0 and fixed seat 330; the guide plate 310 includes an arc-shaped part 311 and a straight plate part 312; one end of the arc-shaped part 311 is fixedly connected to the discharge pipe 120 and to the inner wall of the coal distribution pipe 100, and the other end is fixedly connected to the straight plate part 312; the fixed seat 330 is fixedly connected to the inner wall of the coal distribution pipe 100, one end of the spring 320 is fixedly connected to the bottom of the straight plate part 312, and the other end is fixedly connected to the fixed seat 332; the straight plate part 312 is provided with a brush 340.

[0032] Specifically, the coal blending pipe 100 is used to connect to several coal bunkers and several coal feeders, thereby facilitating the blending of high-calorific-value coal and low-calorific-value coal. The feed pipe 110 is connected to the coal bunker, and the discharge pipe 120 is connected to the coal feeder. The cover 200 is used to seal the coal blending pipe 100 and is bolted to the coal blending pipe 100. The cleaning and guiding assembly 300 is used to clean the coal dust below the conveyor belt 400, and it is provided with four sets. The guide plate 310 is used to limit the flow direction of coal and prevent coal dust from entering the coal blending pipe 100 below the conveyor belt 400. The arc-shaped part 311 is fixedly connected to the coal blending pipe 100 and the discharge pipe 120, so that the guide plate 310 has a certain rigidity. The straight plate part 312 does not contact the inner wall of the coal blending pipe 100, so that the straight plate part 312 can move. The fixing seat 330 is used to provide a horizontal connecting surface for the spring 320. The spring 320 provides elastic support for the straight plate. The brush 340 is used to clean the coal dust at the bottom of the conveyor belt 400. During the operation of the conveyor belt 400, the bottom of the conveyor belt 400 contacts the brush 340. Because there is a gap between the straight plate part 312 and the coal distribution pipe 100, the straight plate part 312 can move. Under the support of the spring 320 and the dynamic contact between the conveyor belt 400 and the brush 340, the brush 340 will vibrate to clean the coal powder at the bottom of the conveyor belt 400 and make the coal powder slide from the arc part 311 into the discharge pipe 120, so that the coal powder is not easy to accumulate in the coal distribution pipe 100 below the conveyor belt 400.

[0033] In this embodiment, the coal distribution pipeline 100 is provided with a doorway 130; the coal distribution pipeline 100 is equipped with a switch door 140, which is located at the doorway 130.

[0034] Specifically, the door 130 and the switch door 140 are located in the middle of the coal distribution pipeline 100. The switch door 140 is designed to facilitate the clearing of blockages in the middle of the coal distribution pipeline 100, whereas the existing coal distribution pipeline 100 is not equipped with a switch door 140 in the middle.

[0035] In this embodiment, the coal distribution pipeline 100 is provided with a door frame 150, which is located inside the doorway 130, and the door 140 is provided with a first handle 160.

[0036] Specifically, the door frame 150 abuts against the switch door 140, enhancing the sealing at the door 130 of the coal distribution pipeline 100. The first handle 160 facilitates the operation of the switch door 140 by the operator. Normally, one end of the switch door 140 is hinged to the coal distribution pipeline 100, and the other end is fixed to the coal distribution pipeline 100 by bolts.

[0037] In this embodiment, the cover 200 is provided with a flow-blocking part 210, which is disposed inside the coal distribution pipeline 100.

[0038] Specifically, the flow obstruction section 210 is designed to prevent coal from accumulating at both ends of the coal distribution pipe 100.

[0039] In this embodiment, the cover 200 is provided with a second handle 220.

[0040] Specifically, the second handle 220 is designed to facilitate the installation and removal of the cover 200.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coal blending device for a coal-fired power plant, characterized in that, It includes a coal distribution pipeline (100), a cover (200), a cleaning and diversion assembly (300), and a conveyor belt (400); The coal distribution pipeline (100) is equipped with an inlet pipe (110) and an outlet pipe (120); The conveyor belt (400) is installed inside the coal distribution pipeline (100); The feed pipe (110) is located above the conveyor belt (400), and the discharge pipe (120) is located below the conveyor belt (400); The cover (200) is detachably installed at both ends of the coal distribution pipe (100); The cleaning guide assembly (300) includes a guide plate (310), a spring (320), and a fixing seat (330); The guide plate (310) includes an arc-shaped portion (311) and a straight portion (312); One end of the arc-shaped part (311) is fixedly connected to the discharge pipe (120) and is fixedly connected to the inner wall of the coal distribution pipe (100), and the other end is fixedly connected to the straight plate part (312); The fixed seat (330) is fixedly connected to the inner wall of the coal distribution pipe (100), one end of the spring (320) is fixedly connected to the bottom of the straight plate (312), and the other end is fixedly connected to the fixed seat (330); The straight plate section (312) is equipped with a brush (340).

2. The coal blending device for a coal-fired power plant according to claim 1, characterized in that, The coal distribution pipeline (100) is equipped with a doorway (130); The coal distribution pipeline (100) is equipped with a switch door (140), which is located at the doorway (130).

3. A coal blending device for a coal-fired power plant according to claim 2, characterized in that, The coal distribution pipeline (100) is provided with a door frame (150), which is located inside the doorway (130), and the door opening and closing door (140) is provided with a first handle (160).

4. A coal blending device for a coal-fired power plant according to claim 3, characterized in that, The cover (200) is provided with a flow-blocking part (210), which is located inside the coal distribution pipeline (100).

5. A coal blending device for a coal-fired power plant according to claim 4, characterized in that, The cover (200) is provided with a second handle (220).

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