A buffer device for a coal chute

Abstract

A buffer device for a coal chute includes a coal hopper, a descending section, and a guide shroud. The coal hopper is located below the main conveyor belt, with its opening corresponding to the downstream end of the main conveyor belt. The guide shroud extends vertically and is located above the sub-conveyor belt. The descending section is a rectangular tube that extends downwards at an angle. The upstream end of the descending section is connected to the discharge port of the coal hopper, and the downstream end is connected to the inlet of the guide shroud. A buffer plate is installed in the descending section, with a width adapted to the width of the descending section. One end of the buffer plate is hinged to the lower inner wall of the descending section, and the other end of the buffer plate is suspended and supported on the lower inner wall of the descending section, with its extension line extending to the inner wall of the guide shroud. This utility model has a simple structure and low modification cost, and can effectively solve the problem of the falling coal blocks impacting the conveyor belt below laterally, eliminating the risk of belt deviation.

Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance, and in particular to a buffer device for a coal chute. Background Technology

[0002] Chemical plants use belt conveyors to transport fuel coal in their power plants. The safe and orderly operation of these belt conveyors directly affects the high-quality and efficient production activities of the power plant.

[0003] A belt conveyor system typically includes a main conveyor belt and multiple sub-conveyor belts. The main conveyor belt supplies coal to the sub-conveyor belts via a coal chute. The coal chute helps prevent excessive dust generation during the coal flow. A coal chute generally includes components such as a coal hopper, a descending section, and a flow guide.

[0004] Due to the positional relationship between the main conveyor belt and the sub-conveyor belt, the descending section of many coal drop pipes extends downward at an angle. When the coal blocks slide down under the action of gravity, they slide down along the lower side wall of the descending section and fall out through the guide shroud, causing a lateral impact force on the sub-conveyor belt below. This results in severe deviation of the sub-conveyor belt, causing one-sided wear of the belt and damage to the frame, leading to frequent equipment maintenance.

[0005] Therefore, how to avoid the lateral impact of coal chunks falling from the coal chute on the conveyor belt at low cost is a problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a buffer device for a coal drop pipe. This device has a simple structure, low modification cost, and can effectively solve the problem of falling coal blocks impacting the conveyor belt below laterally, thus eliminating the risk of belt misalignment.

[0007] The technical solution of this utility model is: a buffer device for a coal chute, including a coal hopper, a descending section, and a guide hood. The coal hopper is located below the main conveyor belt, and the hopper opening corresponds to the downstream end of the main conveyor belt. The guide hood extends vertically and is located above the sub-conveyor belt. The descending section is a rectangular tube that extends downward at an inclination. The upstream end of the descending section is connected to the discharge port of the coal hopper, and the downstream end is connected to the inlet of the guide hood. A buffer plate is provided in the descending section. The width of the buffer plate is adapted to the width of the descending section. One end of the buffer plate is hinged to the lower inner wall of the descending section, and the other end of the buffer plate is suspended and supported on the lower inner wall of the descending section, with its extension line extending to the inner wall of the guide hood.

[0008] A manhole is provided on the upper side wall of the descending section, and is shielded by a hinged cover plate.

[0009] The upper end of the cover plate is hinged to the upper outer wall of the descending section. The cover plate adheres to the upper outer wall of the descending section by gravity, thus protecting the manhole.

[0010] An adjusting bolt is threaded onto the lower side wall of the descending section, and the extended end of the adjusting bolt is located in the descending section, providing support to the other end of the buffer plate.

[0011] The number of adjusting bolts is multiple, corresponding to the lower area of ​​the buffer plate.

[0012] The buffer plate is hinged to the lower inner wall of the descending section by a hinge, and the hinge is located between the buffer plate and the lower inner wall of the descending section.

[0013] The above technical solution has the following beneficial effects:

[0014] 1. The buffer device of the coal chute includes a coal hopper, a descending section, and a guide hood. The coal hopper is located below the main conveyor belt, with its opening corresponding to the downstream end of the main conveyor belt, and is used to receive coal blocks transferred by the main conveyor belt. The guide hood extends vertically and is located above the sub-conveyor belt, providing coal blocks to the sub-conveyor belt. The descending section is a rectangular tube that extends downwards at an angle. The upstream end of the descending section is connected to the discharge port of the coal hopper, and the downstream end is connected to the inlet of the guide hood. The descending section serves to connect the coal hopper and the guide hood, and adapts to the positional relationship between the main conveyor belt and the sub-conveyor belt to meet actual needs. A buffer plate is installed in the descending section, the width of which is adapted to the width of the descending section. One end of the buffer plate is hinged to the lower inner wall of the descending section, while the other end is suspended and supported on the lower inner wall of the descending section. That is, the other end of the buffer plate is a free end, limited by the lower inner wall of the descending section. Because the width of the buffer plate is adapted to the width of the descending section, after the coal blocks discharged from the coal hopper enter the descending section, they are buffered, decelerated, and guided by the buffer plate, causing the coal blocks to transfer downwards in a parabolic trajectory along the extension direction of the buffer plate. The extension line of the buffer plate extends to the inner wall of the guide hood. During the downward transfer of the coal blocks after being guided by the buffer plate, they impact the inner wall of the guide hood, causing the horizontal component velocity of the coal blocks to return to zero. Under the action of gravity, they fall vertically downwards onto the sub-conveyor belt and are transported to the designated position. This effectively avoids the lateral impact force of the coal blocks on the sub-conveyor belt, ensuring the normal operation of the sub-conveyor belt for a long time.

[0015] 2. A manhole is provided on the upper side wall of the descending section, and is protected by a hinged cover plate. The manhole facilitates the installation and maintenance of the buffer plate, and also allows for easy cleaning of the blocked section in case of coal pipe blockage, while preventing dust from escaping. The upper end of the cover plate is hinged to the upper outer wall of the descending section. The cover plate adheres to the upper outer wall of the descending section by gravity, thus protecting the manhole. This structure is simple, easy to maintain, and provides stable protection.

[0016] 3. An adjusting bolt is threaded onto the lower side wall of the descending section. The extended end of the adjusting bolt is located in the descending section and provides support to the other end of the buffer plate. The tilt angle of the buffer plate can be adjusted by controlling the extension length of the adjusting bolt to meet the actual needs of the enterprise.

[0017] 4. The buffer plate is hinged to the lower inner wall of the descending section, and the hinge is located between the buffer plate and the lower inner wall of the descending section. This hinge structure is simple and easy to maintain. The hinge is protected by the buffer plate to prevent coal blocks from directly hitting the hinge and to ensure the service life of the hinge.

[0018] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details. Attached Figure Description

[0019] Figure 1 This is a connection diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the descending section of this utility model.

[0021] In the attached diagram, 1 is the coal hopper, 2 is the descending section, 3 is the flow guide, 4 is the buffer plate, 5 is the manhole, 6 is the cover plate, and 7 is the adjusting bolt. Detailed Implementation

[0022] See Figure 1 and Figure 2 This is a specific embodiment of a buffer device for a coal chute. The buffer device includes a coal hopper 1, a descending section 2, and a guide shroud 3. The coal hopper 1 is located below the main conveyor belt, with its opening corresponding to the downstream end of the main conveyor belt. The guide shroud 3 extends vertically and is located above the sub-conveyor belt. Both the coal hopper and the guide shroud are conventional equipment. To reduce noise, the guide shroud can be made of rubber. The descending section 2 is a rectangular tube that extends downwards at an angle. Obviously, the descending section needs to be fixed by a bracket, and a conventional installation method can be used. The upstream end of the descending section 2 is connected to the discharge port of the coal hopper 1, and the downstream end is connected to the inlet of the guide shroud 3, using a conventional connection structure. A buffer plate 4 is provided in the descending section 2. The width of the buffer plate 4 is adapted to the width of the descending section 2. One end of the buffer plate 4 is hinged to the lower inner wall of the descending section 2, and the other end of the buffer plate 4 is suspended and supported on the lower inner wall of the descending section 2. Specifically, the upper end of the buffer plate is hinged to the lower inner wall of the descending section 2 by one or more hinges, and the hinges are located between the buffer plate 4 and the lower inner wall of the descending section 2. An adjusting bolt 7 is threaded on the lower wall of the descending section 2. The extension end of the adjusting bolt 7 is located in the descending section 2, providing support for the lower end of the buffer plate 4, so that the middle section of the buffer plate is suspended, forming a buffer area. To ensure stability, there are multiple adjusting bolts 7, corresponding to the lower area of ​​the buffer plate 4. The lower extension line of the buffer plate extends to the inner wall of the guide shroud 3.

[0023] To facilitate the installation and maintenance of the buffer plate, a manhole 5 is provided on the upper side wall of the descending section 2, and is shielded by a hinged cover plate 6. Specifically, the upper end of the cover plate 6 is hinged to the upper outer wall of the descending section 2, and the cover plate 6 adheres to the upper outer wall of the descending section 2 by gravity, thus shielding the manhole 5.

[0024] The working principle of this utility model is as follows: the coal blocks transported by the main conveyor belt are discharged into the descending section through the coal drop hopper and impact the buffer plate. The buffer plate buffers and decelerates the coal blocks and guides them downward along the extension direction of the buffer plate. During the downward transfer, the coal blocks impact the inner wall of the guide shroud in a parabolic motion. The horizontal component velocity of the coal blocks returns to zero, and under the action of gravity, they fall vertically downward onto the sub-conveyor belt and are transported to the designated position. The coal blocks falling onto the sub-conveyor belt will not generate lateral impact force, which can effectively prevent belt deviation and ensure the service life of the sub-conveyor belt.

Claims

1. A buffer device for a coal chute, comprising a coal hopper (1), a descending section (2), and a guide shroud (3), wherein the coal hopper (1) is located below the main conveyor belt and the hopper opening corresponds to the downstream end of the main conveyor belt, the guide shroud (3) extends vertically and is located above the sub-conveyor belt, the descending section (2) is a rectangular tube and extends downward at an inclination, the upstream end of the descending section (2) is connected to the discharge port of the coal hopper (1), and the downstream end is connected to the inlet of the guide shroud (3), characterized in that: A buffer plate (4) is provided in the descending section (2). The width of the buffer plate (4) is adapted to the width of the descending section (2). One end of the buffer plate (4) is hinged to the lower inner wall of the descending section (2), and the other end of the buffer plate (4) is suspended and supported on the lower inner wall of the descending section (2), and the extension line extends to the inner wall of the guide shield (3).

2. The buffer device for the coal chute according to claim 1, characterized in that: A manhole (5) is provided on the upper side wall of the descending section (2), and is shielded by a hinged cover plate (6).

3. A chuting device according to claim 2, wherein: The upper end of the cover plate (6) is hinged to the upper outer wall of the descending section (2) by a hinge. The cover plate (6) adheres to the upper outer wall of the descending section (2) by gravity, thus protecting the manhole (5).

4. The chuting apparatus of claim 1, wherein: An adjusting bolt (7) is threaded onto the lower side wall of the descending section (2). The extended end of the adjusting bolt (7) is located in the descending section (2) and provides support to the other end of the buffer plate (4).

5. A chuting device according to claim 4, wherein: The number of adjusting bolts (7) is multiple, corresponding to the lower area of ​​the buffer plate (4).

6. The chuting apparatus of claim 1, wherein: The buffer plate (4) is hinged to the lower inner wall of the descending section (2) by a hinge, and the hinge is located between the buffer plate (4) and the lower inner wall of the descending section (2).

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