Method and assembly for preventing coal blockage through high-frequency vibration

Abstract

The invention provides a mechanical coal blocking prevention assembly, and relates to the technical field of coal blocking prevention, the mechanical coal blocking prevention assembly comprises a coal conveying pipe, the upper end of the coal conveying pipe is connected with coal discharge equipment, the outer pipe wall of the coal conveying pipe is provided with an air cylinder through a fixing block, the piston column end of the air cylinder is connected with a material pushing column, and the inner side wall of the coal conveying pipe is welded with a fixing frame; a high-frequency resonance type vibration exciter is installed on the upper end face of the fixing frame, a base is arranged at the upper end of the high-frequency resonance type vibration exciter in a supporting mode, a large coal dredging conical column is fixed to the upper surface of the base, and a small coal dredging conical column is supported at the side end of the base through a supporting rib plate. The problems that in the grinding and anti-blocking process of a grinding base in the prior art, continuous coal accumulation, slow discharging and dust concentration rising are likely to be caused are solved.

Description

Technical Field

[0001] This invention relates to the field of coal anti-blocking technology, specifically to a mechanical coal anti-blocking method and the working components used in this method. Background Technology

[0002] Mechanical anti-clogging coal conveying components are mainly used to solve the clogging problem in coal conveying systems. Their core structure includes a cleaning device, a vibration component, and a dynamic adjustment mechanism. They are suitable for coal conveying processes in industries such as coal mines, ports, thermal power plants, coal storage yards, coal washing plants, and coal-fired industrial boilers. A search revealed existing technology (Announcement No.: CN202420044156.9) for an anti-clogging coal drop pipe. The document describes how "first, the pipe is manually installed to the predetermined working position. Then, the first grinding block and the inner connecting cylinder can be rotated by an external power supply. Subsequently, coal blocks can be added to the inside of the pipe, allowing the coal blocks to contact the inner grinding block and the outer surface of the first grinding block." As the first grinding block rotates and friction occurs between the inner grinding block and the first grinding block, larger coal blocks can be effectively ground into smaller coal blocks and transported downwards. Simultaneously, the rotation of the inner connecting cylinder causes the first receiving block to rotate synchronously, which in turn causes the first connecting block and the first fixing block to rotate synchronously. At the same time, the first fixing block strikes the hollow tube connected to the bottom surface of the inner guide ring, causing the powdery coal blocks adhering to the inner wall of the inner grinding block to gradually fall off, thereby effectively increasing the anti-clogging effect. However, in the prior art, the grinding and anti-clogging process of the grinding block can easily lead to problems such as continuous coal accumulation, slow feeding, and increased dust concentration. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a mechanical anti-clogging coal method and its components are provided to solve the problems of continuous coal accumulation, slow feeding, and increased dust concentration that easily occur during the grinding and anti-clogging process of the grinding base in existing technologies.

[0004] To achieve the above objectives, a method for preventing coal blockage using high-frequency vibration is provided. This method utilizes a large coal-draining cone, a small coal-draining cone, a base, and a high-frequency resonant vibrator to form a built-in high-frequency resonant mechanism. The high-frequency resonant vibrator drives the large and small coal-draining cones to vibrate at high frequency and low amplitude. This high-frequency shear force weakens and disrupts the cohesion between particles, loosening the bonds between coal materials and allowing them to naturally collapse and flow. This facilitates faster coal dredging and flow, preventing the transmission of external vibration energy to deeper material layers that are difficult to reach, and reducing fatigue damage to the steel structure of the coal conveying pipe. A cylinder pushes a pusher column to extend at an angle, mechanically pushing the blocked coal material from the upper part of the blockage, assisting the high-frequency, low-amplitude vibration of the coal-draining cones in clearing the blockage and improving the anti-blocking effect of the mechanical anti-blocking coal assembly.

[0005] When the coal discharge equipment discharges coal into the coal conveying pipe, the falling coal first flows to the push column, and the falling coal is monitored by the radar level gauge. When a blockage occurs, the cylinder pushes the pusher column to tilt and push out, applying a thrust to the blocked coal, causing it to continue falling to the large and small coal-sparing cones. At this time, the high-frequency resonant vibrator starts, driving the large and small coal-sparing cones to vibrate at high frequency and low amplitude. This high-frequency shear force weakens and destroys the cohesion between particles, loosening the bonds between the coal particles and causing them to collapse and flow out naturally, thus preventing blockages during coal conveying through the coal pipeline. A mechanical anti-clogging coal assembly includes: a coal conveying pipe, with a coal discharge device connected to the upper end of the coal conveying pipe; a cylinder mounted on the outer wall of the coal conveying pipe via a fixing block; a pusher column connected to the piston column end of the cylinder; a fixing frame welded to the inner wall of the coal conveying pipe; a high-frequency resonant vibrator mounted on the upper surface of the fixing frame; a base supported on the upper end of the high-frequency resonant vibrator; a large coal-draining cone column fixed on the upper surface of the base; and a small coal-draining cone column supported on the side end of the base via supporting ribs.

[0006] Furthermore, four sets of fixing blocks are welded around the outer wall of the coal conveying pipe, and cylinders are installed on the surface of each fixing block. Flanges are provided at both the upper and lower ends of the coal conveying pipe.

[0007] Furthermore, a pressure sensor is embedded in the end of the pusher column, and the pusher column is inserted at an angle into the inner wall of the fixed block and the coal conveying pipe.

[0008] Furthermore, an arc-shaped baffle is fixed to the inner wall of the coal conveying pipe; and the arc-shaped baffle covers the upper surface of the pusher column.

[0009] Furthermore, a radar level gauge is installed on the inner wall of the coal conveying pipe, and the radar level gauge is electrically connected to a controller.

[0010] Furthermore, a controller is provided at the front end of the coal conveying pipe, and the controller is electrically connected to a high-frequency resonant vibrator.

[0011] Furthermore, the small coal slugging cones are arranged in a ring array at the outer end of the large coal slugging cones, and the base has a side array of supporting ribs welded on it.

[0012] Furthermore, the upper surface of the fixed frame is fixed to the high-frequency resonant exciter via vibration isolation pads, and a through-line groove is provided on the inner side of the fixed frame. Beneficial effects

[0013] The mechanical anti-clogging coal assembly of this invention utilizes a large coal-draining cone, a small coal-draining cone, a base, and a high-frequency resonant vibrator to form a built-in high-frequency resonant mechanism. The high-frequency resonant vibrator drives the large and small coal-draining cones to vibrate at high frequency and low amplitude. This high-frequency, low-amplitude shear force weakens and disrupts the cohesive force between particles, loosening the bonds between coal materials and allowing for natural collapse and flow. This facilitates faster coal dredging and flow, preventing the transmission of external vibration wave energy to areas difficult to reach, and reducing fatigue damage to the steel structure of the coal conveying pipe. A cylinder pushes a pusher column to extend at an angle, mechanically pushing the blocked coal material in the upper part of the structure, assisting the high-frequency, low-amplitude vibration of the coal-draining cones in dredging, thus improving the anti-clogging effect of the mechanical anti-clogging coal assembly. Attached Figure Description

[0014] Figure 1 This is a front view of the mechanical anti-coal-blocking assembly according to an embodiment of the present invention.

[0015] Figure 2 This is a front view cross-sectional structural diagram of the mechanical anti-clogging coal assembly according to an embodiment of the present invention.

[0016] Figure 3 This is a top view of the high-frequency resonant mechanism according to an embodiment of the present invention.

[0017] Figure 4 This is a front view cross-sectional structural diagram of the high-frequency resonant mechanism according to an embodiment of the present invention.

[0018] In the diagram: 1. Coal conveying pipe; 11. Fixing block; 12. Controller; 13. Flange; 14. Arc-shaped baffle; 2. Coal discharge equipment; 3. Radar level gauge; 4. Pushing column; 41. Cylinder; 42. Pressure sensor; 5. Large coal slugging cone; 51. Small coal slugging cone; 52. Base; 53. High-frequency resonant vibrator; 54. Support rib; 55. Fixing frame; 56. Vibration isolation pad. Detailed Implementation

[0019] This invention provides a method for preventing coal blockage using high-frequency vibration. The high-frequency resonant mechanism loosens the coal body. It mainly uses a large coal-loosening cone, a small coal-loosening cone, a base, and a high-frequency resonant vibrator to form a built-in high-frequency resonant mechanism. During operation, the high-frequency resonant vibrator drives the large and small coal-loosening cones to vibrate at high frequency and low amplitude.

[0020] This high-frequency, low-amplitude shear force weakens and destroys the cohesive force between particles, making the coal material loose and allowing it to collapse and flow naturally. This facilitates faster coal material flow and avoids the transmission of external vibration wave energy to the deep parts of the material that are difficult to reach, thus reducing fatigue damage to the steel structure of the coal conveying pipe. The cylinder pushes the pusher column to extend at an angle, mechanically pushing the coal material that is blocked in the upper part, and assists the high-frequency, low-amplitude vibration of the coal unblocking cone column to unblock the coal, thereby improving the anti-blocking effect of the mechanical anti-blocking coal assembly.

[0021] When the coal discharge equipment discharges coal into the coal conveying pipe, the falling coal first flows to the push column, and the falling coal is monitored by the radar level gauge. When a blockage occurs, the cylinder pushes the pusher column to tilt and push out, applying a thrust to the blocked coal, causing it to continue falling to the large and small coal-sparing cones. At this time, the high-frequency resonant vibrator starts, driving the large and small coal-sparing cones to vibrate at high frequency and low amplitude. This high-frequency shear force weakens and destroys the cohesion between particles, loosening the bonds between the coal particles and causing them to collapse and flow out naturally, thus preventing blockages during coal conveying through the coal pipeline. The mechanical components shown include: A mechanical anti-blocking coal assembly includes: a coal conveying pipe 1, a coal discharge device 2 connected to the upper end of the coal conveying pipe 1, a cylinder 41 installed on the outer wall of the coal conveying pipe 1 through a fixing block 11, a pusher column 4 connected to the piston column end of the cylinder 41, a fixing frame 55 welded to the inner wall of the coal conveying pipe 1, a high-frequency resonant vibrator 53 installed on the upper surface of the fixing frame 55, a base 52 supported on the upper end of the high-frequency resonant vibrator 53, a large coal sloughing cone column 5 fixed on the upper surface of the base 52, and a small coal sloughing cone column 51 supported on the side end of the base 52 through a supporting rib plate 54.

[0022] In this embodiment, four sets of fixing blocks 11 are welded to the circumference of the outer wall of the coal conveying pipe 1. Cylinders 41 are mounted on the surface of each fixing block 11. Flanges 13 are provided at both the upper and lower ends of the coal conveying pipe 1. A pressure sensor 42 is embedded in the end of a pusher column 4, which is inserted at an angle into the fixing blocks 11 and the inner wall of the coal conveying pipe 1. An arc-shaped baffle 14 is fixed to the inner wall of the coal conveying pipe 1, covering the upper surface of the pusher column 4. A radar level gauge 3 is installed on the inner wall of the coal conveying pipe 1, and the radar level gauge 3 is electrically connected to a controller 12. A controller 12 is provided at the front end of the coal conveying pipe 1, and the controller 12 is electrically connected to a high-frequency resonant vibrator 53.

[0023] In a preferred embodiment, cylinder 41 pushes the pusher column 4 out at an angle, causing the pushed column 4 to exert a pushing force on the coal material blocking the upper part of the coal conveying pipe 1, allowing the coal material to continue falling to the large and small coal slack cones 5 and 51. Pressure sensor 42 senses whether the pusher column 4 has pushed the coal material, and pressure sensor 42 is dustproof, allowing it to operate under coal dust conditions. Radar level gauge 3 senses the falling coal material in the coal conveying pipe 1 to determine the degree of blockage, thereby promptly initiating anti-blockage and unblocking measures to prevent the blockage from worsening. Controller 12 can receive remote control signals to operate the electrical equipment of the anti-blockage coal assembly.

[0024] In this embodiment, the small coal slugging cones 51 are arranged in a ring array at the outer end of the large coal slugging cone 5, and the base 52 has supporting ribs 54 welded to its side in a ring array. The upper surface of the fixing frame 55 is fixed to the high-frequency resonant exciter 53 by vibration isolation pads 56, and a through groove is provided on the inner side of the fixing frame 55.

[0025] As a preferred implementation, the large coal slugging cone 5 and the small coal slugging cone 51 generate high-frequency, low-amplitude vibrations under the drive of the high-frequency resonant vibrator 53. This high-frequency, low-amplitude shear force weakens and destroys the cohesive force between particles, making the coal material loose and allowing it to collapse and flow out naturally. Since it is a micro-amplitude vibration, rather than an impact or throwing-type slugging, it will not violently raise coal dust, significantly reducing dust generation from the source and improving the working environment.

[0026] The mechanical anti-clogging coal assembly of this invention can effectively solve the problems of continuous coal accumulation, slow feeding, and increased dust concentration in the prior art. It facilitates faster coal unblocking and flow, avoids the transmission of external vibration wave energy to the deep parts of the material that are difficult to reach, and reduces fatigue damage to the steel structure of the coal conveying pipe. It also assists the high-frequency, low-amplitude vibration of the coal unblocking cone column to unblock the coal, thereby improving the anti-clogging effect of the mechanical anti-clogging coal assembly. It is applicable to mechanical anti-clogging coal assemblies.

Claims

1. A method for preventing coal blockage using high-frequency vibration, characterized in that: An internal high-frequency resonant mechanism is constructed using a large coal slugging cone, a small coal slugging cone, a base, and a high-frequency resonant vibrator. The high-frequency resonant vibrator drives the large and small coal slugging cones to vibrate at high frequency and low amplitude. This high-frequency shear force weakens and destroys the cohesion between particles, loosening the bonds between coal materials and allowing them to collapse and flow naturally. This facilitates faster coal slugging and flow, avoids the transmission of external vibration wave energy to the deep parts of the material that are difficult to reach, and reduces fatigue damage to the steel structure of the coal conveying pipe. A cylinder pushes the pusher column to extend at an angle, mechanically pushing the coal material that is blocked in the upper part, assisting the high-frequency, low-amplitude vibration of the coal slugging cone to slug the coal, and improving the anti-blocking effect of the mechanical anti-blocking coal assembly.

2. The method for preventing coal blockage using high-frequency vibration according to claim 1, characterized in that: When the coal discharge equipment discharges coal into the coal conveying pipe, the falling coal first flows to the push column, and the falling coal is monitored by the radar level gauge. When a blockage occurs, the cylinder pushes the pusher column to tilt and push out, applying a pushing force to the blocked coal, causing the coal to continue falling to the large and small coal slugging cones. At this time, the high-frequency resonant vibrator starts, driving the large and small coal slugging cones to vibrate at high frequency and low amplitude. This high-frequency shearing force weakens and destroys the cohesion between particles, making the connection between the coal loose and allowing it to collapse and flow out naturally, thus preventing blockages when transporting coal through the coal conveying pipe.

3. A coal blocking assembly used in the method of claim 1 or 2, comprising: A coal conveying pipe (1) is connected to a coal discharge device (2) at its upper end. The coal conveying pipe (1) is characterized in that: a cylinder (41) is installed on the outer wall of the coal conveying pipe (1) through a fixing block (11), and a pusher column (4) is connected to the piston column end of the cylinder (41). A fixing frame (55) is welded to the coal conveying pipe (1). A high-frequency resonant vibrator (53) is installed on the fixing frame (55). The high-frequency resonant vibrator (53) supports a base (52). The base (52) fixes a large coal sloughing cone column (5). The base (52) supports a small coal sloughing cone column (51) through a supporting rib plate (54).

4. A mechanical anti-coal-blocking assembly according to claim 3, characterized in that, The outer wall of the coal conveying pipe (1) is welded with four sets of fixing blocks (11) distributed around the perimeter. The fixing blocks (11) are connected to the cylinder (41). The pusher column (4) is equipped with a pressure sensor (42). The pusher column (4) is inserted into the fixing blocks (11) and the inner wall of the coal conveying pipe (1). The coal conveying pipe (1) is fixed with an arc-shaped baffle (14). The arc-shaped baffle (14) is located on the pusher column (4).

5. A mechanical anti-coal-blocking assembly according to claim 4, characterized in that, The coal conveying pipe (1) is equipped with a radar level gauge (3), which is electrically connected to a controller (12); the coal conveying pipe (1) is equipped with a controller (12), which is electrically connected to a high-frequency resonant exciter (53).

6. A mechanical anti-coal-blocking assembly according to claim 5, characterized in that, The small coal sludge cones (51) are arranged in a ring array at the outer end of the large coal sludge cones (5). The base (52) has a side array of supporting ribs (54) welded on it. The fixing frame (55) is fixed to the high-frequency resonant vibrator (53) by vibration isolation pads (56). The fixing frame (55) has a through-line groove.

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