Power plant coal conveying system capable of reducing coal dust pollution

Abstract

The power plant coal conveying system capable of reducing the coal dust pollution comprises a coal conveying table, a conveying belt is movably installed on the coal conveying table, an installation frame is fixedly arranged on the surface of the coal conveying table, meanwhile, a reciprocating lead screw is movably installed on the installation frame, and a driving motor is fixedly connected to the surface of the right side wall of the installation frame in a screwed mode. An output shaft of the driving motor is fixedly connected with the reciprocating lead screw, the reciprocating lead screw is movably provided with a coal dust absorption assembly, the coal dust absorption assembly comprises a negative pressure box, the top of the negative pressure box is fixedly provided with a connecting cylinder, and meanwhile the connecting cylinder is communicated with an external negative pressure pump suction pipe through a flange. According to the power plant coal conveying system capable of reducing coal dust pollution, when pulverized coal is conveyed through the conveying belt on the coal conveying table, medium dust floating on the surface of the pulverized coal can be adsorbed through the coal dust absorption assembly, and the situation that the pulverized coal floats in air and is sucked into a human body, and harm is caused to body health is avoided.

Description

Technical Field

[0001] The utility model relates to the field of coal conveying equipment in power plants, and particularly to a coal conveying system in a power plant for reducing coal dust pollution. Background Art

[0002] There are several important reasons for using conveyor belts in power plant coal conveying:

[0003] 1. High-efficiency continuous conveying:

[0004] The conveyor belt can achieve continuous and uninterrupted conveying of coal, greatly improving the coal conveying efficiency compared with other intermittent conveying methods; for example, in a large thermal power plant, a large amount of coal needs to be consumed every day. If batch transportation is adopted, it is not only time-consuming and laborious, but also difficult to meet the power generation demand; while the conveyor belt can continuously and stably convey coal from the coal storage yard to in front of the boiler.

[0005] 2. Large conveying capacity:

[0006] The design of the conveyor belt can carry a large amount of coal and can meet the large-scale coal consumption demand of the power plant; taking a medium-sized power plant as an example, hundreds of tons or even thousands of tons of coal may need to be conveyed per hour, and the width and strong load-bearing capacity of the conveyor belt can easily handle such a conveying volume.

[0007] 3. Reduction of labor cost:

[0008] Using the conveyor belt can reduce the workload of manual handling and loading / unloading of coal, reducing the labor cost; imagine if coal is manually shoveled and transported to the designated location, it will consume a large amount of manpower and time.

[0009] The coal dust pollution caused by coal conveying with a conveyor belt in a power plant will cause a large amount of coal dust to float into the air, resulting in an increase in the concentration of PM2.5 and PM10 in local areas and affecting the air quality of the surrounding area; for example, the surrounding residents may feel short of breath, especially for people with respiratory diseases such as asthma patients, their conditions may worsen. Content of the Utility Model

[0010] The purpose of the utility model is to provide a coal conveying system in a power plant for reducing coal dust pollution to solve the defects mentioned in the above background art.

[0011] To achieve the above object, a coal conveying system for a power plant that reduces coal dust pollution is provided, including a coal conveying platform. A conveyor belt is movably installed on the coal conveying platform, and a mounting frame is fixedly provided on the surface of the coal conveying platform. At the same time, a reciprocating lead screw is movably installed on the mounting frame, and a driving motor is fixedly screwed on the surface of the right side wall of the mounting frame. The output shaft of the driving motor is fixedly connected to the reciprocating lead screw, and a coal dust absorption component is movably installed on the reciprocating lead screw. The coal dust absorption component includes a negative pressure box, and a connecting cylinder is fixedly installed on the top of the negative pressure box. At the same time, the connecting cylinder is communicated with the suction pipe of an external negative pressure pump through a flange. And a connecting seat is fixedly installed at the bottom of the negative pressure box, a fixing piece is screwed and installed inside the connecting seat, and a filter screen is fixedly provided on the fixing piece.

[0012] Preferably, a driving seat is fixedly installed on the front surface of the negative pressure box, and a guiding seat is fixedly installed on the back surface of the negative pressure box. At the same time, a mounting hole is opened inside the driving seat. The negative pressure box covers the surface of the conveyor belt, and the width of the negative pressure box is greater than the width of the conveyor belt. At the same time, the negative pressure box makes a reciprocating horizontal movement on the surface of the conveyor belt through the driving motor and the reciprocating lead screw.

[0013] Preferably, the size of the mounting hole is adapted to that of the reciprocating lead screw, and the reciprocating lead screw is installed inside the mounting hole.

[0014] Preferably, two guiding holes are opened inside the guiding seat, and guiding rods are inserted into both of the two guiding holes. At the same time, the ends of the guiding rods are fixedly installed on the surface of the side wall of the mounting frame.

[0015] Preferably, a connecting groove is opened inside the connecting seat, and the size of the connecting groove is adapted to that of the fixing piece. At the same time, the fixing piece is inserted into the connecting groove and is screwed and fixed by four fixing bolts.

[0016] Preferably, a plurality of equidistantly arranged mesh holes are uniformly opened on the surface of the filter screen, and the mesh holes are of regular hexagon structure.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. When pulverized coal is conveyed through the conveyor belt on the coal conveying platform, the coal dust floating on its surface can be adsorbed by the coal dust absorption component, avoiding the situation that the pulverized coal floats in the air and is inhaled into the human body, causing harm to physical health.

[0019] 2. The negative pressure box on the coal dust absorption component makes a reciprocating horizontal movement on the surface of the conveyor belt through the driving motor and the reciprocating lead screw. A negative pressure is formed inside the negative pressure box, which can adsorb the pulverized coal floating in the air. At the same time, the adsorption area of the pulverized coal is increased, and the adsorption effect on the pulverized coal in the air is improved. Description of the Drawings

[0020] Figure 1Front view schematic diagram of the structure of the present utility model;

[0021] Figure 2 Schematic diagram of the structure of the coal dust absorption component of the structure of the present utility model;

[0022] Figure 3 Structure of the present utility model Figure 1 Top view;

[0023] Figure 4 Structure of the present utility model Figure 1 Side view.

[0024] Reference numerals in the figure: 1, coal conveying platform; 2, conveyor belt; 3, mounting frame; 4, guide rod; 5, reciprocating lead screw; 6, drive motor; 7, coal dust absorption component; 71, connecting cylinder; 72, negative pressure box; 73, drive seat; 74, mounting hole; 75, connecting seat; 76, connecting groove; 77, fixing piece; 78, fixing bolt; 79, filter screen; 791, mesh holes; 80, guide seat; 81, guide hole. Detailed implementation manner

[0025] Please refer to Figures 1-4 , the present utility model provides a coal conveying system for a power plant that reduces coal dust pollution, including a coal conveying platform 1, on which a conveyor belt 2 is movably installed, and a mounting frame 3 is fixedly arranged on the surface of the coal conveying platform 1. At the same time, a reciprocating lead screw 5 is movably installed on the mounting frame 3, and a drive motor 6 is fixedly screwed on the right side wall surface of the mounting frame 3. The output shaft of the drive motor 6 is fixedly connected to the reciprocating lead screw 5, and a coal dust absorption component 7 is movably installed on the reciprocating lead screw 5. The coal dust absorption component 7 includes a negative pressure box 72, and a connecting cylinder 71 is fixedly installed on the top of the negative pressure box 72. At the same time, the connecting cylinder 71 is communicated with the suction pipe of an external negative pressure pump through a flange. And a connecting seat 75 is fixedly installed at the bottom of the negative pressure box 72, a fixing piece 77 is screwed and installed inside the connecting seat 75, and a filter screen 79 is fixedly arranged on the fixing piece 77.

[0026] Working principle: When the pulverized coal is conveyed through the conveyor belt 2 on the coal conveying platform 1, the floating coal dust on its surface can be adsorbed by the coal dust absorption component 7, avoiding the situation that the pulverized coal floats in the air and is inhaled into the human body, causing harm to physical health;

[0027] The negative pressure box 72 on the coal dust absorption component 7 reciprocates horizontally on the surface of the conveyor belt 2 through the drive motor 6 and the reciprocating lead screw 5. A negative pressure is formed inside the negative pressure box 72, which can adsorb the pulverized coal floating in the air. At the same time, the adsorption area of the pulverized coal is increased, and the adsorption effect of the pulverized coal in the air is improved.

[0028] As a preferred embodiment, a drive seat 73 is fixedly installed on the front surface of the negative pressure box 72, and a guide seat 80 is fixedly installed on the back surface of the negative pressure box 72. At the same time, an installation hole 74 is formed inside the drive seat 73. The negative pressure box 72 covers the surface of the conveyor belt 2, and the width of the negative pressure box 72 is greater than the width of the conveyor belt 2. At the same time, the negative pressure box 72 performs reciprocating lateral movement on the surface of the conveyor belt 2 through the drive motor 6 and the reciprocating lead screw 5.

[0029] The installation hole 74 is adapted to the size of the reciprocating lead screw 5, and the reciprocating lead screw 5 is installed inside the installation hole 74.

[0030] As Figures 1-4 shown: The reciprocating lead screw 5 is driven to rotate by the drive motor 6. The reciprocating lead screw 5 is screwed inside the installation hole 74 to drive the negative pressure box 72 to perform reciprocating lateral movement on the surface of the conveyor belt 2, completing the efficient adsorption work on the pulverized coal on the surface of the conveyor belt 2.

[0031] As a preferred embodiment, two sets of guide holes 81 are formed inside the guide seat 80, and guide rods 4 are inserted into both sets of guide holes 81. At the same time, the ends of the guide rods 4 are fixedly installed on the side wall surface of the mounting frame 3.

[0032] A connection groove 76 is formed inside the connection seat 75, and the connection groove 76 is adapted to the size of the fixing piece 77. At the same time, the fixing piece 77 is inserted into the connection groove 76 and is screwed and fixed by four fixing bolts 78.

[0033] As Figures 1-4 shown: A plurality of sets of equally spaced mesh holes 791 are evenly formed on the surface of the filter screen 79, and the mesh holes 791 are in a regular hexagon structure.

[0034] When the negative pressure box 72 adsorbs the pulverized coal, a filter screen 79 is arranged at the bottom of the negative pressure box 72. The arrangement of the filter screen 79 can filter large-size sundries in the air. The large-size sundries include plastic bags, leaves, etc.

Claims

1. A power plant coal conveying system for reducing coal dust pollution, comprising a coal conveying platform (1), characterized in that: A conveyor belt (2) is movably mounted on the coal conveying platform (1), and a mounting frame (3) is fixedly arranged on the surface of the coal conveying platform (1), and a reciprocating screw (5) is movably mounted on the mounting frame (3), and a driving motor (6) is screwed and fixed to the right wall surface of the mounting frame (3), the output shaft of the driving motor (6) is fixedly connected to the reciprocating screw (5), and a coal dust absorption component (7) is movably mounted on the reciprocating screw (5), the coal dust absorption component (7) comprises a negative pressure box (72), and a connecting tube (71) is fixedly mounted on the top of the negative pressure box (72), and the connecting tube (71) is connected to an external negative pressure pump suction pipe through a flange, and a connecting seat (75) is fixedly mounted on the bottom of the negative pressure box (72), a fixing plate (77) is screwed and mounted inside the connecting seat (75), and a filter screen (79) is fixedly arranged on the fixing plate (77).

2. A power plant coal transportation system for reducing coal dust pollution according to claim 1, characterized in that: The front side of the negative pressure box (72) is fixedly mounted with a driving seat (73), and the back side of the negative pressure box (72) is fixedly mounted with a guide seat (80), and a mounting hole (74) is provided inside the driving seat (73). The negative pressure box (72) covers the surface of the conveyor belt (2), and the width of the negative pressure box (72) is greater than the width of the conveyor belt (2). The negative pressure box (72) performs reciprocating lateral motion on the surface of the conveyor belt (2) through a driving motor (6) and a reciprocating screw (5).

3. A power plant coal transportation system for reducing coal dust pollution according to claim 2, characterized in that: The mounting hole (74) is adapted to the size of the reciprocating screw (5), and the reciprocating screw (5) is mounted inside the mounting hole (74).

4. A power plant coal transportation system for reducing coal dust pollution according to claim 2, characterized in that: Two groups of guide holes (81) are provided inside the guide seat (80), and guide rods (4) are inserted into the insides of the two groups of guide holes (81), while the ends of the guide rods (4) are fixedly mounted on the side wall surface of the mounting frame (3).

5. A power plant coal transportation system for reducing coal dust pollution according to claim 1, characterized in that: The connection seat (75) has a connection groove (76) formed inside thereof, and the connection groove (76) is adapted to the size of the fixing plate (77). The fixing plate (77) is inserted into the connection groove (76) and is screwed and fixed by four sets of fixing bolts (78).

6. A power plant coal transportation system for reducing coal dust pollution according to claim 1, characterized in that: The surface of the filter screen (79) is evenly provided with a plurality of groups of mesh holes (791) arranged at equal intervals, and the mesh holes (791) are in a regular hexagonal structure.

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