Environment-friendly coal slime blending machine for power plant

Abstract

The application provides an environment-friendly power plant coal slime blending machine, and belongs to the technical field of coal blending. The environment-friendly power plant coal slime blending machine comprises a plurality of side-by-side arranged hoppers. The bottom of each hopper is provided with a discharge pipe. The bottom of each discharge pipe is provided with a chute. The inside of each chute is provided with a weighing table. A weight sensor is arranged between each weighing table and chute. In the above scheme, the chute, weighing table and weight sensor are arranged. The material is weighed through the cooperation of the weighing table and weight sensor to control the weight of different types of fuel and ensure the blending effect.

Description

Technical Field

[0001] This application relates to the field of coal blending technology, and in particular to an environmentally friendly coal slime blending machine for power plants. Background Technology

[0002] In thermal power generation, coal is the core fuel. The coal resources available on the market include domestic coal, imported coal, low-calorific-value coal, and high-sulfur coal. The quality of different types of coal varies greatly, which leads to unstable combustion, equipment wear and tear, and difficulty in controlling pollutants. By using a blending machine to mix different types of coal, biomass, and sludge, fuel with a calorific value close to that of the boiler is produced, thereby achieving the system goal of "mixed fuel" that is economically optimal, technically feasible, and environmentally compliant. The existing blending machines deal with materials with different characteristics. Lump coal is easy to get stuck, fine coal has good flowability, and high-moisture coal is easy to stick to the wall and arch. When the coal feed rate fluctuates greatly, the accuracy decreases and there is a problem of difficulty in controlling the weight of different types of fuel, which affects the blending effect. Therefore, this application provides an environmentally friendly coal slime blending machine for power plants to meet the requirements. Utility Model Content

[0003] In view of this, the purpose of this application is to provide an environmentally friendly coal slime blending machine for power plants, so as to control the weight of different types of fuel.

[0004] To solve the above-mentioned technical problems, this application provides the following technical solution: An environmentally friendly coal slime blending machine for power plants includes multiple silos arranged side by side. The bottom of each silo is provided with a discharge pipe, and the bottom of the discharge pipe is provided with a chute. The inside of the chute is provided with a weighing platform, and a weight sensor is provided between the weighing platform and the chute. A hydraulic rod is provided on the rear side of the chute, and a push plate is fixedly installed at the other end of the hydraulic rod. The chute is connected to a housing on the outside. A spiral conveying shaft is provided at the bottom of the housing. A motor is provided at one end of the housing. A discharge chute is provided at the other end of the housing. An extrusion member is provided at the end of the spiral conveying shaft. The extrusion member is located inside the discharge chute.

[0005] Preferably, a slide gate valve is provided in the middle of the discharge pipe, and an electric push rod is provided on the outside of the discharge pipe, with the other end of the electric push rod connected to the valve plate of the slide gate valve.

[0006] Preferably, the chute includes a top opening and a side opening, the top opening of the chute is directly opposite the bottom opening of the discharge pipe, and the side opening of the chute is connected to the housing.

[0007] Preferably, the weighing platform includes a vertical part and a horizontal part, the bottom edge of the vertical part of the weighing platform is arranged parallel to the bottom surface of the chute, and the width of the horizontal part of the weighing platform is the same as the inner cavity width of the chute.

[0008] Preferably, the width of the push plate is the same as the width of the weighing platform, and the upper surface of the push plate is flush with the upper surface of the chute.

[0009] Preferably, there are four weight sensors, which are respectively located at the four bottom corners of the weighing platform.

[0010] Preferably, a bracket is connected to the top end of the housing, a connecting rod is passed through the inside of the bracket, a spring is provided at the top of the bracket, a crossbar is fixedly connected to the top of the connecting rod, and the crossbar is connected to the top of the discharge chute.

[0011] Preferably, the hopper is provided with support feet at all four corners, and the bottom of the hopper is funnel-shaped.

[0012] Preferably, the extrusion element is a cam.

[0013] Preferably, the top edge of the spiral conveyor shaft is flush with the bottom edge of the pusher plate.

[0014] Compared with the prior art, this application has at least the following advantages:

[0015] In the above scheme, by setting up chutes, weighing platforms and weight sensors, the materials are weighed through the cooperation of the weighing platform and weight sensors, so as to control the weight of different types of fuels and ensure the blending effect.

[0016] In the above scheme, by setting up a screw conveyor shaft, an extruder and a discharge chute, the coal moves to the discharge chute position during the rotation of the screw conveyor shaft and is squeezed by the reciprocating motion of the extruder, and is further agitated and mixed evenly, achieving a good blending effect. Attached Figure Description

[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0018] Figure 1 This is a schematic diagram of the overall structure in this application; Figure 2 This is a schematic diagram of the discharge pipe structure in this application; Figure 3 This is a schematic diagram of the weighing platform structure in this application; Figure 4 This is a schematic diagram of the chute structure in this application; Figure 5 This is a schematic diagram of the shell structure in this application; Figure 6 This is a schematic diagram of the spiral conveyor shaft structure in this application; Figure 7 This is a schematic diagram of the discharge trough structure in this application.

[0019] [Figure Labels] 1. Hopper, 101. Discharge pipe, 1011. Slide valve, 1012. Electric push rod, 102. Support leg, 2. Chute, 201. Weighing platform, 202. Weight sensor, 203. Hydraulic rod, 204. Push plate, 3. Housing, 301. Screw conveyor shaft, 302. Motor, 303. Discharge chute, 304. Extrusion part, 4. Bracket, 401. Connecting rod, 402. Spring, 403. Detailed Implementation

[0020] like Figures 1-6 An environmentally friendly coal slime blending machine for power plants is provided in the embodiments of this application. It includes multiple silos 1 arranged side by side. A discharge pipe 101 is provided at the bottom of the silo 1. A chute 2 is provided at the bottom of the discharge pipe 101. A weighing platform 201 is provided inside the chute 2. A weight sensor 202 is provided between the weighing platform 201 and the chute 2. A hydraulic rod 203 is provided at the rear side of the chute 2. A push plate 204 is fixedly installed at the other end of the hydraulic rod 203. The outer side of the chute 2 is connected to the housing 3. The bottom of the housing 3 is provided with a screw conveyor shaft 301. The end of the housing 3 is provided with a motor 302. The other end of the housing 3 is provided with a discharge chute 303. The end of the screw conveyor shaft 301 is provided with an extrusion member 304. The extrusion member 304 is located inside the discharge chute 303. Different types of fuel can be stored in multiple silos 1. The fuel in the silos 1 is released into the chute 2 and falls onto the weighing platform 201. It is weighed by the weight sensor 202 to control the weight of different types of fuel. The hydraulic rod 203 pushes the push plate 204 to move towards the opening of the chute 2, which can squeeze the material on the weighing platform 201 into the shell 3. The motor 302 drives the screw conveyor shaft 301 to rotate, and the screw conveyor shaft 301 pushes the material to move inside the shell 3. At the same time, the screw conveyor shaft 301 also has the effect of stirring and mixing, which can mix different types of fuel, make them evenly distributed, and reduce the difference in the produced coal. During the rotation of the screw conveyor shaft 301, the coal moves to the discharge trough 303 and is squeezed by the reciprocating motion of the extruder 304, which further agitates and mixes it evenly, achieving a good blending effect.

[0021] In this embodiment, as Figures 2-7As shown, a slide gate valve 1011 is provided in the middle of the discharge pipe 101, and an electric push rod 1012 is provided on the outside of the discharge pipe 101. The other end of the electric push rod 1012 is connected to the valve plate of the slide gate valve 1011. The electric push rod 1012 is controlled by an external controller, thereby adjusting the opening of the slide valve 1011. When the weighing platform 201 obtains material close to the required weight, the opening of the slide valve 1011 decreases until the required weight is reached or it closes, thereby achieving the effect of precise control.

[0022] The chute 2 includes a top opening and a side opening. The top opening of the chute 2 is directly opposite the bottom opening of the discharge pipe 101, and the side opening of the chute 2 is connected to the housing 3. The chute 2 can effectively receive materials from the discharge pipe 101 and reduce material splashing into the outside environment, thus reducing pollution.

[0023] The weighing platform 201 includes a vertical part and a horizontal part. The bottom edge of the vertical part of the weighing platform 201 is parallel to the bottom surface of the chute 2, and the width of the horizontal part of the weighing platform 201 is the same as the width of the inner cavity of the chute 2. The horizontal part of the weighing platform 201 is used to carry the material, so as to facilitate weighing. When the pusher plate 204 pushes the material on the weighing platform 201 to move, the vertical part of the weighing platform 201 can prevent the material from moving into the chute 2, so as to prevent the material from accumulating near the weight sensor 202 and affecting its detection accuracy, thus achieving a good guiding and shielding effect.

[0024] The width of the push plate 204 is the same as the width of the weighing platform 201, and the upper surface of the push plate 204 is flush with the upper surface of the chute 2. This ensures that the push plate 204 can neatly push out the material on the weighing platform 201, while preventing the material from sticking to the side wall of the chute 2, thus making the control of the material usage more precise.

[0025] There are four weight sensors 202, which are respectively located at the four corners of the bottom of the weighing platform 201; By rationally distributing four weight sensors 202 at the four corners of the bottom of the weighing platform 201, the weighing platform 201 is kept in a horizontal state. The core advantage of the four-corner distribution method is that it can effectively handle off-center loading, that is, when the object is not placed in the exact center of the weighing platform 201, an accurate weight reading can still be obtained.

[0026] A bracket 4 is connected to the top end of the housing 3. A connecting rod 401 is inserted inside the bracket 4. A spring 402 is installed on the top of the bracket 4. A crossbar 403 is fixedly connected to the top of the connecting rod 401. The crossbar 403 is connected to the top of the discharge chute 303. The screw conveyor shaft 301 drives the extruder 304 to rotate. During the rotation of the extruder 304, the connecting rod 401 is intermittently squeezed, causing the crossbar 403 to move the discharge trough 303 upward. By throwing the material in the discharge trough 303 upward, the material is dispersed and mixed evenly, ensuring a good mixing effect.

[0027] The four corners of the hopper 1 are equipped with support feet 102, and the bottom of the hopper 1 is funnel-shaped; It facilitates the discharge of materials from hopper 1 and is less prone to clogging.

[0028] Extrusion part 304 is a cam; The material in the discharge trough 303 is stirred by the extruder 304 to make it dispersed and mixed evenly.

[0029] The top edge of the screw conveyor shaft 301 is flush with the bottom edge of the push plate 204; The material falling into the push plate 204 can be quickly agitated by the screw conveyor shaft 301, thus adjusting the production rhythm of the clamping block.

Claims

1. An environmentally friendly coal slime blending machine for power plants, characterized in that, The device includes multiple hoppers (1) arranged side by side. The bottom of each hopper (1) is provided with a discharge pipe (101). The bottom of the discharge pipe (101) is provided with a chute (2). The inside of the chute (2) is provided with a weighing platform (201). A weight sensor (202) is provided between the weighing platform (201) and the chute (2). A hydraulic rod (203) is provided on the rear side of the chute (2). A push plate (204) is fixedly installed at the other end of the hydraulic rod (203). The outer side of the chute (2) is connected to a housing (3), and a spiral conveying shaft (301) is provided at the bottom of the inner side of the housing (3). A motor (302) is provided at the end of the housing (3), and a discharge chute (303) is provided at the other end of the housing (3). An extrusion member (304) is provided at the end of the spiral conveying shaft (301), and the extrusion member (304) is located inside the discharge chute (303).

2. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: A slide gate valve (1011) is provided in the middle of the discharge pipe (101), and an electric push rod (1012) is provided on the outside of the discharge pipe (101). The other end of the electric push rod (1012) is connected to the valve plate of the slide gate valve (1011).

3. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The chute (2) includes a top opening and a side opening. The top opening of the chute (2) is directly opposite the bottom opening of the discharge pipe (101), and the side opening of the chute (2) is connected to the shell (3).

4. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The weighing platform (201) includes a vertical part and a horizontal part. The bottom edge of the vertical part of the weighing platform (201) is parallel to the bottom surface of the chute (2). The width of the horizontal part of the weighing platform (201) is the same as the width of the inner cavity of the chute (2).

5. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The width of the push plate (204) is the same as the width of the weighing platform (201), and the upper surface of the push plate (204) is flush with the upper surface of the chute (2).

6. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The number of weight sensors (202) is 4, and the 4 weight sensors (202) are respectively set at the four bottom corners of the weighing platform (201).

7. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The top end of the housing (3) is connected to a bracket (4), a connecting rod (401) is inserted inside the bracket (4), a spring (402) is provided on the top of the bracket (4), a crossbar (403) is fixedly connected to the top of the connecting rod (401), and the crossbar (403) is connected to the top of the discharge trough (303).

8. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The hopper (1) is provided with support feet (102) at all four corners, and the bottom of the hopper (1) is funnel-shaped.

9. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The extrusion part (304) is a cam.

10. The environmentally friendly power plant coal slime blending machine according to claim 1, characterized in that: The top edge of the spiral conveyor shaft (301) is flush with the bottom edge of the push plate (204).

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