Adjusting device for blanking opening of coal blanking pipe

Abstract

The utility model belongs to the technical field of coal drop pipe adjustment, and particularly relates to a coal drop pipe blanking port adjusting device. Comprising a vertically-arranged coal drop pipe body, the left side wall and the right side wall of the coal drop pipe body are each provided with an internally-externally-communicated mounting groove, two adjusting plates distributed left and right are arranged in the coal drop pipe body, the two adjusting plates are hinged to the interiors of the mounting grooves and swing up and down, and connecting plates are fixed to the hinged ends of the adjusting plates; the movable end of the connecting plate penetrates out of the mounting groove to be located on the outer side of the coal drop pipe body, and a hydraulic push rod for pushing the connecting plate to swing is arranged between the movable end of the connecting plate and the outer side wall of the coal drop pipe body. The hydraulic push rod is arranged outside the coal drop pipe body, opening and closing of the adjusting plate are controlled through the connecting plate, and the problem that the service life of the hydraulic push rod is shortened due to the fact that the hydraulic push rod is affected by coal dust is solved while adjustment of the blanking opening of the coal drop pipe body is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal drop pipe adjustment, in particular to a coal drop pipe drop opening adjustment device. Background Art

[0002] The coal transportation system of a power plant is an indispensable part of the thermal power generation process. As a key component, the coal drop pipe has the main function of transporting coal from one place to another. The purpose of adjusting the coal drop point of the coal drop pipe is to ensure that the coal can accurately fall into the lower-level transportation equipment to avoid coal waste and scattering. By accurately controlling the coal drop point, the phenomenon of coal scattering during transportation can be reduced, ensuring the continuity and stability of coal transportation.

[0003] In the prior art, the hydraulic push rod is usually located inside the coal drop pipe and is used to push the adjustment plate to swing to control the opening size of the coal drop pipe. However, since the hydraulic push rod is exposed to the coal dust environment for a long time, the coal dust is easily accumulated on the hydraulic push rod, and it is not convenient to maintain, which easily shortens its service life. Utility Model Content

[0004] The utility model aims to provide a device for adjusting a coal drop pipe drop opening, which can avoid the problem that the hydraulic push rod is affected by coal dust and thus shortens its service life to a certain extent.

[0005] The coal drop pipe drop opening adjustment device comprises a vertically arranged coal drop pipe body, and the left and right side walls of the coal drop pipe body are provided with mounting grooves that communicate with the inside and outside. Two adjustment plates distributed left and right are arranged in the coal drop pipe body, and the two adjustment plates are hinged in the mounting grooves and swing up and down. The hinged ends of the adjustment plates are fixed with connecting plates, and the movable ends of the connecting plates pass through the mounting grooves and are located on the outside of the coal drop pipe body. A hydraulic push rod that pushes the connecting plate to swing is arranged between the movable end of the connecting plate and the outer wall of the coal drop pipe body.

[0006] Furthermore, one end of the hydraulic push rod is hinged to the movable end of the connecting plate, and the other end thereof is hinged to the outer side wall of the coal dropping pipe body.

[0007] Furthermore, the hydraulic push rod is located below the connecting plate.

[0008] Furthermore, a rotating roller which can roll freely and is used to seal the mounting groove is arranged in the mounting groove, the hinged end of the adjustment plate is fixed on the rotating roller, and the fixed end of the connecting plate is fixed on the rotating roller.

[0009] Furthermore, the rotating roller is rotatably connected in the mounting groove via a rotating shaft.

[0010] Furthermore, a vertical slide groove is opened on the front and rear inner walls of the coal drop pipe body corresponding to each adjustment plate, and a scraper independent of it is provided on the upper surface of the adjustment plate. Rotating columns are fixed at the front and rear ends of the scraper. The two rotating columns are respectively located in the slide groove and slide up and down with it.

[0011] Furthermore, a protrusion is fixed on the movable end of the upper surface of the adjustment plate, and the convex surface of the protrusion is an arc-shaped structure.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model arranges the hydraulic push rod outside the coal dropping pipe body and controls the opening and closing of the adjustment plate through the connecting plate, thereby completing the adjustment of the drop opening of the coal dropping pipe body and avoiding the problem of shortening the service life of the hydraulic push rod due to the influence of coal dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A right view structural diagram of ;

[0016] Figure 3 It is a three-dimensional structural diagram of the utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the coal drop pipe body after sectioning;

[0018] The names of the components in the figure are: 1. Coal drop pipe body 2. Scraper 3. Rotating roller 4. Connecting plate 5. Adjusting plate 6. Hydraulic push rod 7. Bump 8. Rotating shaft. DETAILED DESCRIPTION

[0019] The present invention is further described below through specific embodiments in conjunction with the accompanying drawings, but the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0020] Example

[0021] The coal drop pipe drop opening regulating device described in this embodiment is as follows: Figure 1 and Figure 4As shown, it comprises a vertically arranged coal dropping pipe body 1, the cross section of the coal dropping pipe body 1 is a square structure, the left and right side walls of the coal dropping pipe body 1 are provided with mounting grooves communicating with each other inside and outside, two adjusting plates 5 distributed left and right are arranged in the coal dropping pipe body 1, the two adjusting plates 5 are hinged in the mounting groove and swing up and down, the hinged ends of the adjusting plates 5 are fixed with connecting plates 4, the movable ends of the connecting plates 4 pass through the mounting groove and are located outside the coal dropping pipe body 1; a rotating roller 3 which can roll freely and is used to block the mounting groove is arranged in the mounting groove, and the adjusting plate 4 is fixed to the hinged ends of the adjusting plates 5, and the movable ends of the connecting plates 4 pass through the mounting groove and are located outside the coal dropping pipe body 1; a rotating roller 3 which can roll freely and is used to block the mounting groove is arranged in the mounting groove, and the adjusting plate 4 is fixed to the hinged ends of the adjusting plates 5. The hinged end of the plate 5 is fixed on the rotating roller 3, and the fixed end of the connecting plate 4 is fixed on the rotating roller 3; the rotating roller 3 is rotatably connected in the installation groove through the rotating shaft 8; during production and installation, the corresponding installation groove is provided with installation holes on the front and rear inner walls of the coal drop pipe body 1, and the rotating shaft 8 is independently installed in the shaft hole of the rotating roller 3, and the two ends of the rotating shaft 8 are respectively installed in the installation holes, so that the rotation of the rotating roller 3 can be realized. Since the adjustment plate 5 and the connecting plate 4 are both fixed on the rotating roller 3, when the rotating roller 3 rotates, the connecting plate 4 and the adjustment plate 5 swing at the same time. In addition, the main purpose of the rotating roller 3 is to block the installation groove to prevent the coal inside it from being discharged from the installation groove, so during production, the outer wall of the rotating roller 3 fits with the groove wall of the installation groove, so that the coal inside the coal drop pipe body 1 cannot run out from the installation groove; at the same time, when the rotating roller 3 rotates, the adjusting plate 5 swings to complete the adjustment work of adjusting the internal material drop opening of the coal drop pipe body 1. The structure between the rotating roller 3 and the adjusting plate 5 is simple, which reduces the possibility of coal accumulation.

[0022] like Figures 1 to 3 As shown, a hydraulic push rod 6 is provided between the movable end of the connecting plate 4 and the outer side wall of the coal dropping pipe body 1 to push the connecting plate 4 to swing; one end of the hydraulic push rod 6 is hinged to the movable end of the connecting plate 4, and the other end is hinged to the outer side wall of the coal dropping pipe body 1; the hydraulic push rod 6 is located below the connecting plate 4; the angle between the adjusting plate 5 and the connecting plate 4 is preferably between 90 degrees and 120 degrees, which can improve the impact resistance of the adjusting plate 5 to a certain extent. When in use, when the swinging ends of the two adjusting plates 5 are close to each other, the hydraulic push rod 6 is in a contracted state, and when the hydraulic push rod 6 is extended, the connecting plate 4 swings upward, the rotating roller 3 rotates, the adjusting plate 5 swings downward, the distance between the swinging ends of the two adjusting plates 5 becomes larger, and the drop opening of the coal dropping pipe body 1 increases. The hydraulic push rod 6 is installed on the outside of the coal dropping pipe body 1 and below the connecting plate 4, which is lower to the ground, making it convenient for the staff to maintain and install.

[0023] The hydraulic push rod 6 is an existing product, including a hydraulic cylinder and a push rod and other components. When installed, a first connecting ring is fixed to the bottom of the hydraulic cylinder, and a second connecting ring is fixed to the movable end of the push rod. The first connecting ring is hinged to the outer wall of the coal drop pipe body 1 through a first hinge seat, and the second connecting ring is hinged to the movable end of the lower surface of the connecting plate 4 through a second hinge seat. When in use, when the hydraulic push rod 6 is contracted, the connecting plate 4 swings downward, the rotating roller 3 rotates, the adjusting plate 5 swings upward, and the distance between the swinging ends of the two adjusting plates 5 becomes smaller, and the drop opening of the coal drop pipe body 1 is reduced.

[0024] like Figure 1 and Figure 4 As shown, a vertical chute is provided on the front and rear inner walls of the coal drop pipe body 1 corresponding to each adjusting plate 5, and a scraper 2 independent of it is provided on the upper surface of the adjusting plate 5, and a rotating column is fixed at both ends of the scraper 2, and the two rotating columns are respectively located in the chute and slide with it up and down; rollers are independently mounted on the rotating column, and the rollers are located in the chute, and the rollers can reduce friction to a certain extent when the rotating column slides up and down along the chute; the scraper 2 has a certain weight, and when in use, the working surface of the scraper 2 naturally fits the upper surface of the adjusting plate 5 by its own weight; the working surface of the scraper 2 is inclined at a certain angle to the swing end of the adjusting plate 5. When in use, when the adjusting plate 5 swings downward, the inclination of its upper surface increases, and the scraper 2 scrapes on the adjusting plate 5 under the action of its own gravity, and the rotating column naturally falls down along the chute to scrape out the coal left on the upper surface of the adjusting plate 5. A protrusion 7 is fixed to the movable end of the upper surface of the adjusting plate 5. The convex surface of the protrusion 7 is an arc-shaped structure. The protrusion 7 is located in the middle of the upper surface of the adjusting plate 5. When in use, coal is easily accumulated between the angle between the scraper 2 and the upper surface of the adjusting plate 5. The scraper 2 slides along the upper surface of the adjusting plate 5. When encountering the protrusion 7, the convex surface of the protrusion 7 lifts the scraper 2, so that a certain gap is formed between the scraper 2 and the adjusting plate 5, and the accumulated coal leaks out from the gap.

[0025] In actual use, the hydraulic push rod 6 is located outside the coal drop pipe body 1. By controlling the hydraulic push rod 6 to retract, the connecting plate 4 swings up and down, thereby adjusting the swing of the adjustment plate 5 to adjust the size of the drop opening of the coal drop pipe body 1. The advantages of this embodiment are: the hydraulic push rod 6 is arranged outside the coal drop pipe body 1, and is no longer directly exposed to the coal dust environment inside the coal drop pipe body 1, and its service life will be significantly extended, reducing the frequency of maintenance and replacement; the extension of the service life of the hydraulic push rod 6 will also reduce the related maintenance costs, including maintenance costs, replacement costs of parts, and production losses caused by downtime; the hydraulic push rod 6 is located outside the coal drop pipe body 1, and maintenance personnel can more easily access and perform necessary maintenance operations, reducing the difficulty and complexity of maintenance.

Claims

1. A device for adjusting a coal drop opening of a coal drop pipe, comprising a vertically arranged coal drop pipe body (1), characterized in that: The left and right side walls of the coal drop pipe body (1) are provided with mounting grooves that communicate with each other inside and outside. Two adjustment plates (5) distributed on the left and right are arranged in the coal drop pipe body (1). The two adjustment plates (5) are hinged in the mounting grooves and swing up and down. The hinged ends of the adjustment plates (5) are fixed with connecting plates (4). The movable ends of the connecting plates (4) extend out of the mounting grooves and are located outside the coal drop pipe body (1). A hydraulic push rod (6) is arranged between the movable ends of the connecting plates (4) and the outer wall of the coal drop pipe body (1) to push the connecting plates (4) to swing.

2. The device for adjusting the coal drop opening of a drop pipe according to claim 1, characterized in that: One end of the hydraulic push rod (6) is hinged to the movable end of the connecting plate (4), and the other end is hinged to the outer side wall of the coal drop pipe body (1).

3. The device for adjusting the coal drop opening of a drop pipe according to claim 2, characterized in that: The hydraulic push rod (6) is located below the connecting plate (4).

4. The device for adjusting the coal drop opening of a coal drop pipe according to claim 1, characterized in that: A freely rolling rotating roller (3) for sealing the mounting groove is arranged in the mounting groove, the hinged end of the adjustment plate (5) is fixed on the rotating roller (3), and the fixed end of the connecting plate (4) is fixed on the rotating roller (3).

5. The device for adjusting the coal drop opening of a drop pipe according to claim 4, characterized in that: The rotating roller (3) is rotatably connected in the installation groove via a rotating shaft (8).

6. The device for adjusting the coal drop opening of a coal drop pipe according to claim 1, characterized in that: Corresponding to each adjusting plate (5), a vertical slide groove is opened on the front and rear inner walls of the coal drop pipe body (1), and a scraper (2) independent of it is arranged on the upper surface of the adjusting plate (5). Rotating columns are fixed at the front and rear ends of the scraper (2), and the two rotating columns are respectively located in the slide groove and slide with it up and down.

7. The device for adjusting the coal drop opening of a coal drop pipe according to claim 5, characterized in that: A convex block (7) is fixed to the movable end of the upper surface of the adjustment plate (5), and the convex surface of the convex block (7) is in an arc-shaped structure.

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