Crushed coal blanking deceleration buffer type coal falling pipe

Abstract

The utility model relates to the technical field of coal dropping pipes, and particularly discloses a crushed coal dropping deceleration buffer type coal dropping pipe which comprises a first pipe body and a second pipe body, the second pipe body comprises a first pipe section, a second pipe section and a third pipe section, and the two sides of the second pipe section are connected with the first pipe section and the third pipe section respectively; the first pipe section and the third pipe section are of a hard pipe structure, the second pipe section is of a flexible pipe structure, and the second pipe body is further provided with a reciprocating driver for controlling the third pipe section to move. By arranging the first pipe body with the straight pipe structure and the second pipe body with the bent pipe structure, the buffer in the first pipe body is used for buffering and decelerating coal, and the reciprocating driver is used for controlling the second pipe body to wriggle, so that the coal is pushed to run while the falling speed of the coal is reduced, and the coal is prevented from being blocked in the pipeline.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of coal dropping pipes, in particular to a crushed coal dropping deceleration and buffering type coal dropping pipe. Background Art

[0002] Coal drop pipes are a general term for pipelines used to transport coal in industries such as coal, ports, thermal power plants, coal transfer stations, coal washeries, and coal-fired industrial boilers. Currently, most of the coal drop pipes used for bulk material transportation in industrial sites like power plants, ports, steel mills, and mines are linear structures with square cross-sections. Problems that arise during bulk material transportation not only shorten their service life, increase the difficulty of repair and maintenance, reduce bulk material transportation efficiency, and affect the health of maintenance personnel.

[0003] The coal drop pipe needs to reduce the coal speed when transporting coal to prevent the coal with excessive discharge kinetic energy from hitting and damaging the conveyor belt. However, the moisture content of the coal varies due to the influence of the external environment. When the coal contains high moisture or high viscosity and the transportation speed is slow, it may cause coal blockage in the coal bunker, resulting in coal shortage in the coal feeder and pulverizer, and further causing fluctuations in boiler output. Utility Model Content

[0004] The purpose of the utility model is to provide a coal dropping pipe with a deceleration and buffering function for dropping crushed coal, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A coal drop pipe with deceleration and buffering function for dropping crushed coal comprises a first pipe body and a second pipe body, wherein the second pipe body comprises a first pipe section, a second pipe section and a third pipe section, and the two sides of the second pipe section are respectively connected to the first pipe section and the third pipe section; the first pipe section and the third pipe section are hard pipe structures, and the second pipe section is a flexible pipe structure; the second pipe body is also provided with a reciprocating drive for controlling the movement of the third pipe section, and the reciprocating drive drives the third pipe section to move toward or away from the first pipe section during the movement of the coal, drives the second pipe section to contract or stretch, and causes the second pipe section to creep.

[0007] As a further solution of the present invention: the first tube body is a straight tube structure, and the second tube body is a curved tube structure.

[0008] As a further solution of the present invention: a mounting plate is provided on the first pipe section, the reciprocating drive is mounted on the mounting plate, the reciprocating drive is connected to the telescopic rod through a connecting pipe, the telescopic rod includes a sleeve and an arc rod slidably mounted inside the sleeve, one end of the arc rod is connected to the third pipe section through a connecting rod, and a hydraulic chamber is formed between the other end of the arc rod and the sleeve.

[0009] As a further solution of the present invention: a corrugated structure is provided in the inner wall of the second pipe section.

[0010] As a further solution of the present invention: the connecting rod is hinged to the outer wall of the third pipe section, and the end of the connecting rod is rotatably connected to the arc rod; an arc-shaped slide groove is opened inside the sleeve, and a slider is slidably installed inside the arc-shaped slide groove, and the slider is connected to the arc rod, and the slider is connected to one end of the arc-shaped slide groove through a reset spring.

[0011] As a further solution of the present invention: the reciprocating drive includes a housing, a piston and a driver, a cavity is provided inside the housing, the piston is slidably installed inside the cavity, an oil filling space is formed between the piston and one side of the cavity, a liquid inlet and a liquid discharge port are provided on the housing, the liquid inlet and the liquid discharge port are connected to the oil filling space, and the liquid discharge port is connected to the sleeve of the telescopic rod through a connecting pipe, and the liquid inlet is connected to the oil cylinder; the output end of the driver is connected to the piston.

[0012] As a further solution of the present invention: the first tube body includes a tube wall and a buffer arranged on the inner side of the tube wall, the buffer includes a buffer plate, an impact plate and a connecting piece, the buffer plate is fixedly connected to the impact plate, and the buffer plate and the impact plate are in a broken line shape after being connected; the connection between the buffer plate and the impact plate is rotatably installed on the tube wall through a rotating shaft, the impact plate is connected to the tube wall through a connecting piece, the connecting piece is an elastic structure, and the buffer plate is connected to the tube wall through at least one buffer spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention sets a first tube body with a straight tube structure and a second tube body with a curved tube structure, uses a buffer inside the first tube body to buffer and slow down the coal, and uses a reciprocating drive to control the peristalsis of the second tube body, thereby reducing the falling speed of the coal while promoting the movement of the coal, avoiding blockage of the coal inside the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the coal dropping pipe with deceleration and buffering function for crushed coal dropping.

[0015] Figure 2 This is the right side view of the coal drop pipe with deceleration and buffering function for crushed coal falling.

[0016] Figure 3 This is a schematic diagram of the structure of the first pipe body in the coal crushing and falling deceleration and buffering type coal dropping pipe.

[0017] Figure 4 This is a front view of the first pipe body in the coal crushing and falling deceleration and buffering type coal dropping pipe.

[0018] Figure 5This is a schematic diagram of the structure of the second pipe body in the coal crushing and falling deceleration and buffering type coal dropping pipe.

[0019] Figure 6 This is a schematic diagram of the structure of the reciprocating drive in the coal dropping deceleration and buffering type coal dropping pipe.

[0020] In the figure: 10-first tube body, 11-tube wall, 12-buffer plate, 13-impact plate, 14-connecting piece, 15-buffer spring, 16-pointer, 20-second tube body, 21-first tube section, 22-second tube section, 23-third tube section, 24-telescopic rod, 241-slider, 242-return spring, 243-arc rod, 25-connecting rod, 26-reciprocating drive, 261-piston, 262-drive, 263-liquid inlet, 264-liquid outlet, 265-connecting pipe, 27-oil cylinder. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-6 In an embodiment of the present invention, a coal dropping deceleration and buffering type coal dropping pipe is provided, comprising a first pipe body 10 and a second pipe body 20. The first pipe body 10 may be provided with a plurality of first pipe bodies 10, and the plurality of first pipe bodies 10 may be detachably connected. The first pipe body 10 at the bottom is connected to the second pipe body 20. In the embodiment of the present application, the first pipe body 10 is a straight pipe structure, and the second pipe body 20 is a curved pipe structure. After the coal enters from the first pipe body 10 at the upper part, it falls along the plurality of first pipe bodies 10 to the second pipe body 20 and is finally discharged from the second pipe body 20. The connection between the second pipe body 20 and the first pipe body 10 is vertically arranged, and the discharge side of the second pipe body 20 is horizontally arranged. The curved pipe structure of the second pipe body 20 is relied on to decelerate and buffer the coal, so that the movement speed of the coal after discharge is reduced.

[0023] Furthermore, in the embodiment of the present application, the second pipe body 20 includes a first pipe segment 21, a second pipe segment 22, and a third pipe segment 23. The two sides of the second pipe segment 22 are connected to the first pipe segment 21 and the third pipe segment 23 respectively. The first pipe segment 21, the second pipe segment 22, and the third pipe segment 23 have the same bending curvature, thereby forming a second pipe body 20 with a curved pipe structure. The coal inside the second pipe body 20 rubs against the inner wall of the second pipe segment 22 at the bending part of the second pipe body 20 (the second pipe segment 22), thereby greatly reducing the movement speed of the coal. The first pipe section 21 and the third pipe section 23 are hard pipe structures, and the second pipe section 22 is a flexible pipe structure. The second pipe body 20 is also provided with a reciprocating drive 26 for controlling the movement of the third pipe section 23. The reciprocating drive 26 drives the third pipe section 23 toward or away from the first pipe section 21 during the movement of the coal, drives the second pipe section 22 to contract or stretch, and causes the second pipe section 22 to peristalsis, thereby reducing the movement speed of the coal inside the second pipe body 20 while promoting the movement of the coal, thereby preventing the coal from being blocked inside the second pipe body 20.

[0024] In the embodiment of the present application, a mounting plate is provided on the first pipe section 21, and the reciprocating drive 26 is mounted on the mounting plate. The reciprocating drive 26 is connected to the telescopic rod 24 through a connecting pipe 265. The telescopic rod 24 includes a sleeve and an arc-shaped rod 243 slidably mounted inside the sleeve. One end of the arc-shaped rod 243 is connected to the third pipe section 23 through the connecting rod 25. A hydraulic chamber is formed between the other end of the arc-shaped rod 243 and the sleeve. When the reciprocating drive 26 injects hydraulic oil into the hydraulic chamber through the connecting pipe 265, the hydraulic oil pushes the arc-shaped rod 243 to extend out of the sleeve and slide, and the volume of the hydraulic chamber increases. When the reciprocating drive 26 extracts hydraulic oil into the hydraulic chamber through the connecting pipe 265, the volume of the hydraulic chamber decreases, and the arc-shaped rod 243 extends into the sleeve and slides. The reciprocating drive 26 controls the reciprocating sliding of the arc-shaped rod 243, so that the distance between the third pipe section 23 and the first pipe section 21 is intermittently increased and decreased, thereby causing the second pipe section 22 to continuously stretch and contract.

[0025] Furthermore, in an embodiment of the present application, a corrugated structure is provided in the inner wall of the second pipe section 22. The second pipe section 22 contacts the coal through the corrugated structure during the stretching and contraction process, so that the coal reduces its movement speed under the squeezing action of the corrugated structure. In addition, the corrugated structure can also push the coal to move, promote the discharge of the coal, and avoid coal blockage.

[0026] In the embodiment of the present application, the connecting rod 25 is hinged to the outer wall of the third pipe section 23, and the end of the connecting rod 25 is rotatably connected to the arc rod 243; an arc-shaped slide groove is opened inside the sleeve, and a slider 241 is slidably installed inside the arc-shaped slide groove, and the slider 241 is connected to the arc rod 243, and the slider 241 is connected to one end of the arc-shaped slide groove through a reset spring 242. When the reciprocating drive 26 draws hydraulic oil into the hydraulic chamber through the connecting pipe 265, the volume of the hydraulic chamber decreases, and the arc rod 243 is retracted into the sleeve under the drive of the reset spring 242.

[0027] In the embodiments of this application, Figure 6 As shown, the reciprocating driver 26 includes a shell, a piston 261 and a driver 262. A cavity is provided inside the shell, and the piston 261 is slidably installed inside the cavity. The piston 261 and one side of the cavity form an oil filling space. A liquid inlet 263 and a liquid discharge port 264 are provided on the shell. The liquid inlet 263 and the liquid discharge port 264 are connected to the oil filling space, and the liquid discharge port 264 is connected to the sleeve of the telescopic rod 24 through a connecting pipe 265. The liquid inlet 263 is connected to the oil cylinder 27; the driver 262 is a cylinder, and the output end of the cylinder is connected to the piston 261.

[0028] See also Figure 3 In the embodiment of the present application, the first tube body 10 includes a tube wall 11 and a buffer arranged on the inner side of the tube wall 11, the buffer including a buffer plate 12, an impact plate 13 and a connecting piece 14, the buffer plate 12 is fixedly connected to the impact plate 13, the buffer plate 12 and the impact plate 13 are connected in a broken line shape, and the angle between the buffer plate 12 and the impact plate 13 is 120-160 degrees; the connection between the buffer plate 12 and the impact plate 13 is rotatably mounted on the tube wall 11 through a rotating shaft, the impact plate 13 is connected to the tube wall 11 through a connecting piece 14, and the connecting piece 14 is The buffer plate 12 is an elastic structure, and is connected to the tube wall 11 by at least one buffer spring 15. After the coal inside the first tube body 10 falls, it collides with the buffer plate 12. The buffer plate 12 buffers and slows down the coal and rotates around the rotating shaft, so that the buffer plate 12 drives the impact plate 13 to move toward the center of the first tube body 10, and uses the impact plate 13 to beat the coal, thereby promoting the rapid falling of the coal. In addition, after the buffer plate 12 collides with the coal, the buffer spring 15 vibrates and drives the buffer plate 12 and the impact plate 13 to reciprocate, further buffering and decelerating the falling of the coal.

[0029] Furthermore, in the embodiments of the present application, Figure 3 and Figure 4As shown, a pointer 16 is installed on the outside of the tube wall 11 of the first tube body 10, and the pointer 16 is fixedly connected to the rotating shaft. The pointer 16 is used to indicate the rotation angle of the buffer plate 12. When the coal inside the first tube body 10 is blocked at the position of the buffer plate 12, the pointer 16 is offset compared to the initial horizontal position. The staff can judge whether the first tube body 10 is blocked by observing the deflection of the pointer 16, so as to clean the blocked first tube body 10 and ensure that the coal feeding path is unobstructed.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0031] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A coal drop pipe with a deceleration and buffering function for dropping crushed coal, comprising a first pipe body (10) and a second pipe body (20), characterized in that: The second pipe body (20) comprises a first pipe section (21), a second pipe section (22) and a third pipe section (23); the two sides of the second pipe section (22) are respectively connected to the first pipe section (21) and the third pipe section (23); the first pipe section (21) and the third pipe section (23) are hard pipe structures, and the second pipe section (22) is a flexible pipe structure. The second pipe body (20) is also provided with a reciprocating driver (26) for controlling the movement of the third pipe section (23); the reciprocating driver (26) drives the third pipe section (23) to move toward or away from the first pipe section (21) during the movement of the coal material, and the third pipe section (23) drives the second pipe section (22) to contract or stretch, so that the second pipe section (22) generates creeping motion.

2. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 1 is characterized in that: The first tube body (10) is a straight tube structure, and the second tube body (20) is a curved tube structure.

3. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 1, characterized in that: The first pipe section (21) is provided with a mounting plate, the reciprocating driver (26) is mounted on the mounting plate, the reciprocating driver (26) is connected to the telescopic rod (24) via a connecting pipe (265), the telescopic rod (24) comprises a sleeve and an arc-shaped rod (243) slidably mounted inside the sleeve, one end of the arc-shaped rod (243) is connected to the third pipe section (23) via a connecting rod (25), and a hydraulic chamber is formed between the other end of the arc-shaped rod (243) and the sleeve.

4. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 3 is characterized in that: A corrugated structure is provided in the inner wall of the second pipe section (22).

5. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 4 is characterized in that: The connecting rod (25) is hinged to the outer wall of the third pipe section (23), and the end of the connecting rod (25) is rotatably connected to the arc rod (243); an arc-shaped sliding groove is provided inside the sleeve, and a slider (241) is slidably installed inside the arc-shaped sliding groove, and the slider (241) is connected to the arc rod (243), and the slider (241) is connected to one end of the arc-shaped sliding groove through a reset spring (242).

6. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 5, characterized in that: The reciprocating driver (26) comprises a housing, a piston (261) and a driver (262). A cavity is provided inside the housing, the piston (261) is slidably mounted inside the cavity, an oil injection space is formed between the piston (261) and one side of the cavity, a liquid inlet (263) and a liquid discharge port (264) are provided on the housing, the liquid inlet (263) and the liquid discharge port (264) are in communication with the oil injection space, and the liquid discharge port (264) is in communication with the sleeve of the telescopic rod (24) through a connecting pipe (265), the liquid inlet (263) is connected to the oil cylinder (27); the output end of the driver (262) is connected to the piston (261).

7. The crushed coal falling deceleration and buffering type coal dropping pipe according to claim 1, characterized in that: The first tube body (10) includes a tube wall (11) and a buffer arranged on the inner side of the tube wall (11), the buffer including a buffer plate (12), an impact plate (13) and a connecting piece (14), the buffer plate (12) and the impact plate (13) are fixedly connected, and the buffer plate (12) and the impact plate (13) are in a broken line shape after being connected; the connection between the buffer plate (12) and the impact plate (13) is rotatably mounted on the tube wall (11) via a rotating shaft, the impact plate (13) is connected to the tube wall (11) via a connecting piece (14), the connecting piece (14) is an elastic structure, and the buffer plate (12) is connected to the tube wall (11) via at least one buffer spring (15).

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