Adjustable ceramic air supply device for pneumatic conveying of pulverized coal

Abstract

The adjustable ceramic air supply device comprises a pulverized coal pipe, the pulverized coal pipe is sleeved with and fixedly provided with an annular piece, the pulverized coal pipe is sleeved with and communicated with a discharging pipe, the discharging pipe and the annular piece are connected through a plurality of fastening bolts, and the upper end of the discharging pipe is communicated with and fixedly provided with an air inlet pipe. An annular sliding groove is formed in the pulverized coal pipe, a movable part is arranged in the discharging pipe, and one end of the movable part extends into the annular sliding groove and is arranged in the annular sliding groove in a sliding mode. According to the adjustable ceramic air supply device for pneumatic conveying of pulverized coal, air flow is discharged through a gap between the movable part and the discharging pipe and is mixed with pulverized coal in the pulverized coal pipe, and a generated material column can be damaged; the long-distance stable conveying effect is achieved, the device is used in the pneumatic conveying process of the pulverized coal, the high-concentration pulverized coal discharged from the injection tank is diluted, solid and gas are fully and evenly mixed, the pulverized coal and the gas form a stable concentrated-phase solid-gas two-phase flow, long-distance, high-concentration and large-injection-quantity conveying of the pulverized coal is facilitated, and the device is key equipment for long-distance concentrated-phase conveying of the pulverized coal.

Description

Technical Field

[0001] The invention relates to the technical field related to air replenishers, and in particular to an adjustable ceramic air replenisher for pneumatic conveying of coal powder. Background Art

[0002] A pulverized coal pipeline is a pipeline system specifically designed to transport pulverized coal. It is usually made of steel pipes or other corrosion-resistant and high-temperature-resistant materials. The design of these pipelines takes into account the physical characteristics and transportation requirements of pulverized coal to ensure that pulverized coal can be transported efficiently and safely from one place to another.

[0003] When the coal powder is too fine, the surface tension between the particles increases, making it easy for the coal powder to aggregate and difficult to disperse, resulting in poor fluidity. At the same time, when the moisture content of the coal powder is reduced to below 1%, its surface softness becomes worse, the friction between the particles increases, and the fluidity is significantly reduced. In addition, overly dry coal powder is also prone to agglomeration due to static electricity, further affecting fluidity.

[0004] Therefore, when the existing coal powder conveying pipeline is conveying coal powder, the coal powder has poor fluidity. The poor fluidity of coal powder will cause its flow speed in the conveying pipeline to slow down, and may even cause blockage. This will not only reduce the conveying efficiency and increase the conveying time, but may also affect the stability and continuity of the entire production process. In order to overcome the resistance caused by the poor fluidity of coal powder, the conveying system may need to consume more energy to push the coal powder forward. This will not only increase energy consumption costs, but may also have a negative impact on the life of the conveying equipment. The poor fluidity of coal powder may also cause increased wear of the conveying equipment. Since the coal powder does not flow smoothly in the pipeline, it may cause more friction and collision with the inner wall of the pipeline, thereby accelerating the wear and aging of the equipment. For this reason, we propose an adjustable ceramic air replenisher for pneumatic conveying of coal powder. Summary of the invention

[0005] In order to solve the defects of the prior art, the present invention provides an adjustable ceramic air replenisher for pneumatic conveying of coal powder.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention discloses an adjustable ceramic air replenisher for pneumatic conveying of coal powder, comprising a coal powder pipe, on which an annular sheet is sleeved and fixedly installed, and on the outer side of the coal powder pipe, a discharge pipe is sleeved and connected to the annular sheet, the discharge pipe is connected to the annular sheet by a plurality of fastening bolts, and an air inlet pipe is connected and fixedly installed at the upper end of the discharge pipe.

[0008] The pulverized coal pipe is provided with an annular slide groove, and a movable part is arranged in the discharge pipe. One end of the movable part extends into the annular slide groove and is slidably arranged in the annular slide groove. A plurality of guide grooves distributed in a circular array are provided on one side of the movable part. Magnets are fixedly installed in the guide grooves. A plurality of guide rods distributed in a circular array are fixedly installed in the annular slide groove. One ends of the guide rods are respectively inserted into the guide grooves. Springs are sleeved on the guide rods. Two ends of the springs are respectively fixedly connected to the guide groove and the movable part. An electromagnet is fixedly installed on one end of the guide rod located in the guide groove.

[0009] As a preferred technical solution of the present invention, flanges are fixedly installed on the upper end of the air inlet pipe, the outer end of the coal powder pipe and the end of the discharge pipe.

[0010] As a preferred technical solution of the present invention, a first flow guide slope is provided in the pulverized coal pipe.

[0011] As a preferred technical solution of the present invention, a second flow guide slope is provided at one end of the movable member.

[0012] As a preferred technical solution of the present invention, a support bar is fixedly installed in the pulverized coal pipe, a rotating shaft is rotatably installed on the support bar, a bracket is fixedly installed on the end of the rotating shaft, and a plurality of brush plates distributed in a circular array are fixedly connected to the outer end of the bracket.

[0013] As a preferred technical solution of the present invention, the surface of the brush plate is provided with bristles that are in contact with the inner wall of the coal powder pipe.

[0014] As a preferred technical solution of the present invention, one side of the support bar is configured to be in a pointed cone shape.

[0015] As a preferred technical solution of the present invention, a driving mechanism is provided on the pulverized coal pipe, and the driving mechanism is connected to the rotating shaft and is used to drive the plurality of brush plates to rotate around the rotating shaft.

[0016] As a preferred technical solution of the present invention, the driving mechanism includes a transmission shaft, which is rotatably mounted on the pulverized coal pipe, a meshing bevel gear is mounted on the lower end of the transmission shaft and the rotating shaft, a driven wheel is fixedly mounted on the upper end of the transmission shaft, a motor is fixedly mounted outside the pulverized coal pipe, a driving wheel is fixedly mounted on the output shaft end of the motor, and the driving wheel is meshed with the driven wheel.

[0017] As a preferred technical solution of the present invention, a protective cover is fixedly installed outside the pulverized coal pipe, and the protective cover covers the outside of the motor.

[0018] The beneficial effects of the present invention are:

[0019] 1. This kind of adjustable ceramic air replenisher used for pneumatic conveying of coal powder, the airflow is discharged from the gap between the movable part and the discharge pipe and mixed with the coal powder in the coal powder pipe, which can destroy the generated material column and achieve a long-distance stable conveying effect. The device is used in the process of pneumatic conveying of coal powder to dilute the high-concentration coal powder coming out of the blowing tank, so that the solid and gas are fully and evenly mixed, and the coal powder and gas form a stable dense phase solid-gas two-phase flow. It has good guidance and can make the coal powder more fluid, which is conducive to the long-distance, high-concentration and large-volume conveying of coal powder. It is a key equipment for long-distance dense phase conveying of coal powder.

[0020] 2. This kind of adjustable ceramic air replenisher for coal powder pneumatic conveying, by energizing the electromagnet, the electromagnet exerts a repulsive force on the magnet, the magnet and the movable part move synchronously, the movable part moves a distance toward the discharge pipe, the gap between the movable part and the discharge pipe changes, and the air intake of the airflow mixed with coal powder can be adjusted. By controlling the current of the electromagnet, the distance between the movable part and the discharge pipe can be controlled, and the air intake of the airflow can be adjusted accordingly. The device adjusts the air intake volume and flow rate by changing the gap of the air replenishment airway, thereby adjusting the coal injection amount to meet production needs.

[0021] 3. This type of adjustable ceramic air replenisher for pneumatic conveying of coal powder drives the brush plate to rotate around the rotating shaft through the motor and cleans the coal powder attached to the inner wall of the coal powder pipe. Cleaning the coal powder attached to the inner wall of the coal powder pipe can significantly reduce the resistance of the pipeline and make the flow of coal powder in the pipeline smoother. This can not only increase the conveying speed of coal powder, but also reduce the energy consumption during the conveying process, thereby improving the efficiency of the entire conveying system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0023] In the attached picture:

[0024] Figure 1 It is a structural schematic diagram of an adjustable ceramic air replenisher for pneumatic conveying of coal powder according to the present invention;

[0025] Figure 2 It is a cross-sectional view of an adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to the present invention;

[0026] Figure 3 It is an enlarged cross-sectional view of a part of the structure of an adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to the present invention;

[0027] Figure 4 It is an enlarged structural schematic diagram of the movable parts of an adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to the present invention;

[0028] Figure 5 The invention discloses an adjustable ceramic air replenisher for pneumatic conveying of coal powder. Figure 3 A is an enlarged schematic diagram.

[0029] In the figure: pulverized coal pipe 1, annular sheet 2, discharge pipe 3, fastening bolt 4, air intake pipe 5, annular slide 6, movable part 7, guide groove 8, magnet 9, guide rod 10, spring 11, electromagnet 12, first guide slope 13, second guide slope 14, support bar 15, rotating shaft 16, bracket 17, brush plate 18, transmission shaft 19, bevel gear 20, driven wheel 21, motor 22, driving wheel 23, protective cover 24. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an adjustable ceramic air replenisher for pneumatic conveying of pulverized coal of the present invention comprises a pulverized coal pipe 1, an annular sheet 2 is sleeved and fixedly installed on the pulverized coal pipe 1, a discharge pipe 3 is sleeved and connected to the outer surface of the pulverized coal pipe 1, the discharge pipe 3 is connected to the annular sheet 2 by a plurality of fastening bolts 4, and an air inlet pipe 5 is connected and fixedly installed on the upper end of the discharge pipe 3. An annular chute 6 is provided in the pulverized coal pipe 1, a movable part 7 is provided in the discharge pipe 3, one end of the movable part 7 extends into the annular chute 6 and is slidably arranged in the annular chute 6, a plurality of guide grooves 8 distributed in a circumferential array are provided on one side of the movable part 7, magnets 9 are fixedly installed in the guide grooves 8, a plurality of guide rods 10 distributed in a circumferential array are fixedly installed in the annular chute 6, one end of the guide rods 10 is respectively inserted into the guide grooves 8, a spring 11 is sleeved on the guide rods 10, the two ends of the spring 11 are respectively fixedly connected in the guide groove 8 and on the movable part 7, and an electromagnet 12 is fixedly installed at one end of the guide rod 10 located in the guide groove 8. By energizing the electromagnet 12, the electromagnet 12 applies a repulsive force to the magnet 9, the magnet 9 and the movable part 7 move synchronously, the movable part 7 moves a distance toward the discharge pipe 3, the gap between the movable part 7 and the discharge pipe 3 changes, and the intake amount of the airflow mixed with the coal powder can be adjusted. By controlling the current of the electromagnet 12, the distance between the movable part 7 and the discharge pipe 3 can be controlled, and the intake amount of the airflow can be adjusted accordingly. The device adjusts the air supply volume and flow rate by changing the gap of the air supply airway, thereby adjusting the coal injection amount to meet production needs.

[0032] Flanges are fixedly mounted on the upper end of the air inlet pipe 5, the outer end of the pulverized coal pipe 1 and the end of the discharge pipe 3. A first guide slope 13 is provided in the pulverized coal pipe 1. A second guide slope 14 is provided at one end of the movable member 7. The first guide slope 13 and the second guide slope 14 guide the pulverized coal to make the flow of the pulverized coal smoother.

[0033] Among them, a support bar 15 is fixedly installed inside the pulverized coal pipe 1, and a rotating shaft 16 is rotatably installed on the support bar 15. A bracket 17 is fixedly installed at the end of the rotating shaft 16, and a plurality of brush plates 18 distributed in a circumferential array are fixedly connected to the outer end of the bracket 17. The surface of the brush plate 18 is provided with bristles that contact the inner wall of the pulverized coal pipe 1. One side of the support bar 15 is set in a pointed cone shape. A driving mechanism is provided on the pulverized coal pipe 1, and the driving mechanism is connected to the rotating shaft 16 and is used to drive the plurality of brush plates 18 to rotate around the rotating shaft 16. The driving mechanism includes a transmission shaft 19, which is rotatably installed on the pulverized coal pipe 1, and a meshing bevel gear 20 is installed on the lower end of the transmission shaft 19 and the rotating shaft 16, and a driven wheel 21 is fixedly installed on the upper end of the transmission shaft 19, and a motor 22 is fixedly installed outside the pulverized coal pipe 1, and a driving wheel 23 is fixedly installed on the output shaft end of the motor 22, and the driving wheel 23 meshes with the driven wheel 21. A protective cover 24 is fixedly installed outside the pulverized coal pipe 1 , and the protective cover 24 covers the outside of the motor 22 .

[0034] Working principle: The pulverized coal pipe 1 is installed on the pulverized coal main pipe at the outlet of the injection tank, and air is introduced into the air inlet pipe 5. The airflow is discharged from the gap between the movable part 7 and the discharge pipe 3 and mixed with the pulverized coal in the pulverized coal pipe 1, which can destroy the generated material column and achieve a long-distance stable transportation effect. The device is used in the process of pneumatic conveying of pulverized coal to dilute the high-concentration pulverized coal coming out of the injection tank, so that the solid and gas are fully and evenly mixed, and the pulverized coal and gas form a stable dense phase solid-gas two-phase flow. It has good guidance and can make the pulverized coal more fluid, which is conducive to the long-distance, high-concentration and large-volume transportation of pulverized coal. It is a key equipment for long-distance dense phase transportation of pulverized coal.

[0035] By energizing the electromagnet 12, the electromagnet 12 applies a repulsive force to the magnet 9, the magnet 9 and the movable part 7 move synchronously, the movable part 7 moves a distance toward the discharge pipe 3, the gap between the movable part 7 and the discharge pipe 3 changes, and the intake amount of the airflow mixed with the coal powder can be adjusted. By controlling the current of the electromagnet 12, the distance between the movable part 7 and the discharge pipe 3 can be controlled, and the intake amount of the airflow can be adjusted accordingly. The device adjusts the air supply volume and flow rate by changing the gap of the air supply airway, thereby adjusting the coal injection amount to meet production needs.

[0036] The motor 22 drives the driving wheel 23 to rotate, the driving wheel 23 drives the driven wheel 21 to rotate, the transmission shaft 19 rotates and drives the rotating shaft 16 to rotate through the two bevel gears 20, so that the brush plate 18 can rotate around the rotating shaft 16 and clean the coal powder attached to the inner wall of the coal powder pipe 1. Cleaning the coal powder attached to the inner wall of the coal powder pipe can significantly reduce the resistance of the pipeline and make the coal powder flow in the pipeline smoother. This can not only increase the conveying speed of the coal powder, but also reduce the energy consumption during the conveying process, thereby improving the efficiency of the entire conveying system.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adjustable ceramic air replenisher for pneumatic conveying of pulverized coal, comprising a pulverized coal pipe (1), characterized in that: An annular sheet (2) is sleeved and fixedly mounted on the pulverized coal pipe (1), a discharge pipe (3) is sleeved and connected to the pulverized coal pipe (1), the discharge pipe (3) and the annular sheet (2) are connected via a plurality of fastening bolts (4), and an air intake pipe (5) is connected and fixedly mounted on the upper end of the discharge pipe (3); The pulverized coal pipe (1) is provided with an annular slide groove (6), a movable part (7) is provided in the discharge pipe (3), one end of the movable part (7) extends into the annular slide groove (6) and is slidably arranged in the annular slide groove (6), and a plurality of guide grooves (8) distributed in a circumferential array are provided on one side of the movable part (7).

2. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 1, characterized in that: A magnet (9) is fixedly installed in each of the guide grooves (8); a plurality of guide rods (10) distributed in a circumferential array are fixedly installed in each of the annular slide grooves (6); one end of each of the guide rods (10) is inserted into each of the guide grooves (8); a spring (11) is sleeved on each of the guide rods (10); both ends of each of the springs (11) are fixedly connected to each of the guide grooves (8) and the movable member (7); an electromagnet (12) is fixedly installed at one end of each of the guide rods (10) located in the guide groove (8); and flanges are fixedly installed at the upper end of the air inlet pipe (5), the outer end of the pulverized coal pipe (1) and the end of the discharge pipe (3).

3. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 1, characterized in that: A first flow guiding inclined surface (13) is arranged in the pulverized coal pipe (1).

4. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 1, characterized in that: A second flow guiding inclined surface (14) is provided at one end of the movable member (7).

5. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 4, characterized in that: A support bar (15) is fixedly installed inside the pulverized coal pipe (1), a rotating shaft (16) is rotatably installed on the support bar (15), a bracket (17) is fixedly installed at the end of the rotating shaft (16), and a plurality of brush plates (18) distributed in a circumferential array are fixedly connected to the outer end of the bracket (17).

6. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 5, characterized in that: The surface of the brush plate (18) is provided with brush bristles that are in contact with the inner wall of the coal powder pipe (1).

7. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 6, characterized in that: One side of the support bar (15) is configured to be in a pointed cone shape.

8. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 7, characterized in that: The pulverized coal pipe (1) is provided with a driving mechanism, which is connected to the rotating shaft (16) and is used to drive a plurality of brush plates (18) to rotate around the rotating shaft (16).

9. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 8, characterized in that: The driving mechanism comprises a transmission shaft (19), the transmission shaft (19) being rotatably mounted on the pulverized coal pipe (1), a bevel gear (20) being mounted on the lower end of the transmission shaft (19) and meshing with the rotating shaft (16), a driven wheel (21) being fixedly mounted on the upper end of the transmission shaft (19), a motor (22) being fixedly mounted outside the pulverized coal pipe (1), a driving wheel (23) being fixedly mounted on the output shaft end of the motor (22), and the driving wheel (23) being meshing with the driven wheel (21).

10. The adjustable ceramic air replenisher for pneumatic conveying of pulverized coal according to claim 9, characterized in that: A protective cover (24) is fixedly mounted outside the pulverized coal pipe (1), and the protective cover (24) covers the outside of the motor (22).

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