Anti-blocking device for coal dropping pipe of coal conveying system

Abstract

The utility model provides an anti-blocking device for a coal dropping pipe of a coal conveying system, and relates to the technical field of anti-blocking devices. The device comprises a high-pressure gas pump and a dredging gun, a gas outlet channel of the high-pressure gas pump is connected with the dredging gun; the dredging gun comprises a gun body, a cutting assembly connected to the gun body and an air nozzle connected to the gun body, and the air nozzle communicates with the air outlet channel. In the using process of the anti-blocking device, high-pressure gas in the dredging gun is matched with the cutting assembly to dredge a blocked place, high-pressure gas flow is safe and efficient, the cutting assembly can cut tightly-attached coal blocks, cleaning is convenient, the overall structure is simple, the working efficiency is high, and the anti-blocking device is suitable for popularization and application. Blockages deposited in the coal drop pipe can be cleaned in time, and smooth production is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-blocking devices, and in particular to an anti-blocking device for a coal drop pipe of a coal conveying system. Background Art

[0002] The coal drop pipe is a general term for coal transportation pipelines in industries such as coal, ports, thermal power, coal transfer stations, coal washing plants, and coal-fired industrial boilers. When used, coal will enter the coal drop pipe through the coal bunker. Ordinary coal drop pipes mostly use steel plate welding structures, which are generally made into square or round pipes. Some use straight pipe designs, and some use curved pipe designs. In general, inclined pipes plus vertical pipe designs are mostly used. During the production process, the amount of coal transported is generally large, and dozens of tons of coal pass through the coal drop pipe every hour. The viscosity and humidity of the coal also determine its adhesion and deposition in the coal drop pipe. Therefore, due to the large coal flow and more adhesion, coal arches are prone to occur, causing occlusion and affecting production. Therefore, ensuring that coal can flow in the coal drop pipe in a timely manner without blockage is the key to ensuring the stable operation of the coal drop pipe.

[0003] The existing technology mostly adopts changing the shape of the coal drop pipe or adding a coal drop pipe to solve the problem that the coal drop pipe is prone to blockage and affects production efficiency. However, in actual production, simply changing the appearance still cannot completely solve the blockage problem, because even if the square cross-section coal drop pipe is changed to a curved coal drop pipe (making its cross-section circular), blockage will still occur. This is because there is still a dead zone for material flow in the curved coal drop pipe, and a large flow of coal will still cause blockage. Moreover, the curved coal drop pipe is mostly a single pipe diameter. Once blocked, it will be stopped for inspection, resulting in large production losses and difficult maintenance. Simply adding a coal drop pipe still cannot fundamentally solve the problem of coal drop pipe blockage. Utility Model Content

[0004] The purpose of the utility model is to provide a device for preventing blockage of a coal drop pipe in a coal conveying system. By adding an anti-blockage device to the coal drop pipe, the device has a simple structure, is easy to install, can adapt to coal drop pipes of various shapes, and is used to clear blockages accumulated in the coal drop pipe, thereby ensuring smooth production.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] The present application provides a device for preventing blockage of a coal drop pipe in a coal transportation system, which includes a high-pressure gas pump and a unclogging gun; the air outlet of the high-pressure gas pump is connected to the unclogging gun; the unclogging gun includes a gun body, a cutting assembly connected to the gun body and an air nozzle connected to the gun body, and the air nozzle is connected to the air outlet.

[0007] According to an optional embodiment, the gun body includes a hollow gun body and a solid gun head which are integrally connected, the air nozzle is arranged in the hollow gun body, and a plurality of air outlet holes are circumferentially opened on the hollow gun body near the location of the air nozzle.

[0008] According to an optional embodiment, the solid gun tip is in a conical shape, and the apex angle of the cone is ≤60°.

[0009] According to an optional embodiment, the cutting assembly is circumferentially connected to the gun body.

[0010] According to an optional embodiment, the cutting assembly includes a folding frame and a scraper; the folding frame is slidably connected to the hollow gun body, and the scraper is evenly distributed on the folding frame in the circumferential direction; the folding frame includes a fixed umbrella shaft, a sliding support shaft and a support bone hinged on the sliding support shaft; the fixed umbrella shaft and the sliding support shaft are alternately arranged on the hollow gun body, the sliding support shaft is slidably connected to the hollow gun body, and the sliding support shaft slides along the longitudinal axis direction of the hollow gun body; one end of the scraper is hinged to the support bone, and the other end of the scraper is connected to the fixed umbrella shaft; the closer the sliding support shaft is to the fixed umbrella shaft, the larger the angle between the scraper and the hollow gun body is, and a limiting block is provided at the connection between the fixed umbrella shaft and the scraper, and the angle does not exceed 90°.

[0011] According to an optional embodiment, the hollow gun body is also circumferentially provided with an external thread and a hollow tube body adapted to the external thread, the inner diameter of the hollow tube body is larger than the inner diameter of the hollow gun body, and the inner diameter of the hollow tube body is the same as the inner diameter of the sliding support shaft; when the inner thread of the hollow tube body completely overlaps with the external thread, the angle between the scraper and the hollow gun body is the largest.

[0012] According to an optional embodiment, the gun body is a telescopic structure.

[0013] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0014] Since the coal powder raw materials are widely available, of many varieties, with high moisture and high viscosity, it is very easy to form coal arches at the outlet of the coal storage bin and the interface of the straight and inclined pipes of the coal drop pipe. The anti-blocking device for the coal drop pipe of the coal conveying system in this application can deliver high-pressure airflow to the dredging gun through a high-pressure gas pump, and the high-pressure gas in the dredging gun and the cutting assembly cooperate to clear the blocked area. The high-pressure airflow is safe and efficient, and the cutting assembly can cut the tightly adhered coal blockage for easy cleaning. The overall structure is simple, the work efficiency is high, and the blockage accumulated in the coal drop pipe can be cleaned in time to ensure the smooth progress of production. The utility model has a reasonable design, a simple structure, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a device for preventing a coal drop pipe from blocking a coal conveying system provided by an embodiment of the utility model;

[0017] Figure 2 A schematic structural diagram of a dredging gun with a limit block added in a device for preventing blockage of a coal drop pipe in a coal conveying system provided in an embodiment of the utility model.

[0018] Icons: 2-high pressure gas pump, 3-unclogging gun, 21-air outlet, 31-gun body, 32-cutting assembly, 33-air nozzle, 311-hollow gun body, 312-solid gun head, 313-air outlet, 314-first sleeve, 315-second sleeve, 321-scraper, 322-fixed umbrella shaft, 323-sliding support shaft, 324-support bone, 325-limiting block, 326-hollow tube body, 327-external thread. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0022] In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when used. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Example 1

[0025] This embodiment provides a device for preventing the coal pipe from being blocked in a coal conveying system. Figure 1 As shown, a high-pressure gas pump 2 and a dredging gun 3; the air outlet 21 of the high-pressure gas pump 2 is connected to the dredging gun 3; the dredging gun 3 includes a gun body 31, a cutting assembly 32 connected to the gun body 31, and an air nozzle 33 connected to the gun body 31, and the air nozzle 33 is connected to the air outlet 21. The gun body 31 is composed of a hollow gun body 311 and a solid gun head 312, and the air nozzle 33 is installed in the hollow gun body 311. In order to realize the high-pressure gas ejection near the solid gun head 312, the air outlet hole 313 reserved for the air nozzle 33 is circumferentially opened at a position 1-3 cm below the connection between the solid gun head 312 and the hollow gun body 311. In order to facilitate the dredging gun 3 to reach the blockage site smoothly, the solid gun head 312 is designed to be conical, and the angle of the cone tip is ≤60°. The air nozzle 33 is arranged inside the hollow gun body 311.

[0026] The cutting assembly 32 connected to the unclogging gun 3 is circumferentially connected to the gun body 31 , while avoiding the air outlet 313 , and is arranged below the air outlet 313 , wherein the cutting assembly 32 is composed of a folding frame and a scraper 321 .

[0027] The folding skeleton includes, from top to bottom, a fixed umbrella shaft 322, a support bone 324 and a sliding support shaft 323. The fixed umbrella shaft 322 is passed through the hollow gun body 311 and fixedly connected thereto, and is used to hinge the scraper 321. The two ends of the support bone 324 are respectively connected to the scraper 321 and the sliding support shaft 323, and are used to adjust the angle of the scraper 321. The angle between the scraper 321 and the hollow gun body 311 (with the support bone 324 as the hypotenuse) is between 0° and 90°. The sliding support shaft 323 is arranged below the fixed umbrella shaft 322 and is slidably connected to the hollow gun body 311. The angle between the scraper 321 and the hollow gun body 311 is changed by the reciprocating motion of the sliding support shaft 323 on the hollow gun body 311.

[0028] In addition, in order to facilitate the adjustment of the position of the sliding support shaft 323 on the hollow gun body 311, the hollow gun body 311 is also designed with an external thread 327 and a hollow tube 326 matched with the external thread 327, which is arranged below the sliding support shaft 323. The inner diameter of the hollow tube 326 is larger than the outer diameter of the gun body 31, and the inner diameter of the hollow tube 326 is the same as the inner diameter of the sliding support shaft 323; when the inner thread of the hollow tube 326 completely overlaps with the external thread 327, the angle between the scraper 321 and the gun body 31 is the largest. Figure 2 As shown, when the hollow tube 326 is twisted downward, the angle between the scraper 321 and the gun body 31 becomes smaller. At the same time, in order to ensure the stability of the angle of the scraper 321, a limit block 325 is provided above the connection between the fixed umbrella shaft 322 and the scraper 321. The limit block 325 is perpendicular to the gun body 31 and is used to ensure that the angle of the scraper 321 does not exceed 90°.

[0029] Finally, the main body of the gun body 31 is designed as a telescopic structure, which is composed of a hollow gun body 311 and a first sleeve 314 and a second sleeve 315 compositely sleeved on the hollow gun body 311. The purpose of length extension and storage is achieved by adjusting and stretching the hollow gun body 311 and the first sleeve 314 and the second sleeve 315, which is convenient to use.

[0030] It should be noted that, as a preferred implementation, the working principle and use process of a coal conveying system coal drop pipe anti-blocking device provided in this embodiment are as follows:

[0031] First, the blockage is preliminarily cleared in the retracted state (the scraper 321 is not perpendicular to the gun body 31), and at the same time, the airflow of the high-pressure gas pump 2 is adjusted, and the stretching length of the first sleeve 314 and the second sleeve 315 are adjusted to clear the large blockages at the target coal blockage. Subsequently, when cleaning the coal blocks adhering to the wall of the coal drop pipe, the hollow tube body 326 is rotated to lock it with the hollow gun body 311 through a threaded structure, so that the scraper 321 is vertical, and the scraper 321 is used to cut and scrape the adhered coal blocks, and the angle of the clearing gun 3 is adjusted, and the coal slag is blown with the high-pressure airflow at the air outlet 313 until it is cleaned.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. 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. A device for preventing the coal pipe from blocking in a coal conveying system, characterized in that: Includes high-pressure gas pump and unclogging gun; The air outlet of the high-pressure gas pump is connected to the dredging gun; The unclogging gun comprises a gun body, a cutting assembly connected to the gun body, and an air nozzle connected to the gun body, wherein the air nozzle is communicated with the air outlet.

2. The device for preventing the coal drop pipe from blocking the coal conveying system according to claim 1, characterized in that: The gun body comprises a hollow gun body and a solid gun head which are integrally connected. The air nozzle is arranged inside the hollow gun body. The hollow gun body near the location of the air nozzle is provided with a plurality of air outlet holes along the circumferential direction.

3. The device for preventing the coal drop pipe from blocking the coal transportation system according to claim 2, characterized in that: The solid gun head is in a conical shape, and the angle of the cone apex is ≤60°.

4. The device for preventing the coal drop pipe from blocking the coal conveying system according to claim 2, characterized in that: The cutting assembly is circumferentially connected to the surface of the gun body.

5. The device for preventing the coal drop pipe from blocking the coal transportation system according to claim 4, characterized in that: The cutting assembly includes a folding frame and a scraper; The folding frame is partially connected to the hollow gun body in a sliding manner, and the scrapers are circumferentially distributed on the folding frame; The folding frame comprises a fixed umbrella shaft, a sliding support shaft and a support bone hinged on the sliding support shaft; The fixed umbrella shaft and the sliding support shaft are arranged in the hollow gun body at intervals, the sliding support shaft is slidably connected to the gun body, and the sliding support shaft slides along the longitudinal axis direction of the hollow gun body; One end of the scraper is hinged to the support frame, and the other end of the scraper is hinged to the fixed umbrella shaft; A limiting block is arranged at the connection between the fixed umbrella shaft and the scraper, and the angle of the scraper does not exceed 90°.

6. The device for preventing the coal drop pipe from blocking the coal transportation system according to claim 5, characterized in that: The hollow gun body is also circumferentially provided with an external thread and a hollow tube body adapted to the external thread, the inner diameter of the hollow tube body is larger than the outer diameter of the gun body, and the inner diameter of the hollow tube body is equal to the inner diameter of the sliding support shaft; When the internal thread of the hollow tube body completely overlaps with the external thread, the angle between the scraper and the hollow gun body is the largest.

7. The device for preventing the coal drop pipe from blocking the coal conveying system according to any one of claims 1 to 6, characterized in that: The gun body is a telescopic structure.

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