Stable fan for coal-fired boiler of power station

Abstract

The utility model discloses a stable fan for a coal-fired boiler of a power station, which comprises a fan body and a base, the bottom of the fan body is fixedly connected with a mounting piece, and the mounting piece is arranged in the middle of the top end of the base; threaded rods are rotationally connected to the inner walls of the two sides of the base through first bearings, the two ends of each threaded rod are both sleeved with displacement pieces in a threaded mode, a mounting plate is fixedly connected to the top ends of the displacement pieces, a plurality of locking rods are fixedly connected to the top of the mounting plate, and a plurality of locking grooves are formed in the two sides of each mounting piece. The multiple locking rods are connected with the multiple locking grooves in an inserted mode correspondingly. The input end of the fan body is fixedly connected with a shell, an air inlet is formed in the shell, a filter screen is clamped to the side, close to the fan body, of the shell, and a motor is installed on the side, away from the fan body, of the shell. According to the fan, dust accumulated and blocked on the surface of the filter screen of the fan can be dredged, air conveying is prevented from being affected, and the fan body is convenient to disassemble and assemble and convenient to maintain and repair.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a stable fan used for a coal-fired boiler in a power station. Background Art

[0002] Coal-fired boilers in power plants are used to convert the chemical energy of coal and other fuels into thermal energy, which is then converted into electrical energy through steam generators. Fans are required to provide oxygen required for fuel combustion in coal-fired boilers in power plants, but existing fans for coal-fired boilers in power plants have the following disadvantages:

[0003] (1) Existing fans are often equipped with filters to prevent dust and particulate matter from entering coal-fired boilers. After working for a long time, dust on the surface of the filter is easily accumulated and clogged, affecting the air delivery and making cleaning inconvenient;

[0004] (2) The fans used in coal-fired boilers in existing power plants are often fixed to the installation site using fasteners. Disassembly and assembly take a long time, which is not conducive to removing the fans for maintenance and overhaul. Utility Model Content

[0005] The utility model aims to overcome the above-mentioned deficiencies in the prior art and to provide a stable fan for a coal-fired boiler in a power station with a reasonable structural design.

[0006] The technical solution adopted by the utility model to solve the above-mentioned problem is: a stable fan for a coal-fired boiler in a power station, comprising a fan body and a base, characterized in that: a mounting piece is fixedly connected to the bottom of the fan body, and the mounting piece is placed in the middle of the top of the base; threaded rods are rotatably connected to the inner walls on both sides of the base through a bearing, displacement pieces are threadedly sleeved at both ends of the threaded rods, a mounting plate is fixedly connected to the top of the displacement piece, a plurality of locking rods are fixedly connected to the top of the mounting plate, a plurality of locking grooves are provided on both sides of the mounting piece, and the plurality of locking rods are respectively plugged into the plurality of locking grooves; a shell is fixedly connected to the input end of the fan body, an air inlet is provided on the shell, a filter screen is clamped on a side of the shell close to the fan body, a motor is installed on a side of the shell away from the fan body, the output end of the motor is fixedly connected to a rotating shaft through the side wall of the shell, a brush is fixedly connected to one end of the rotating shaft, and a bearing 2 is sleeved at the connection between the output end of the motor and the shell.

[0007] Furthermore, a maintenance plate is installed at the bottom end of the shell.

[0008] Furthermore, both left and right sides of the top of the base are fixedly connected with limit bars, and the limit bars are arranged on the outside of the mounting piece.

[0009] Furthermore, displacement openings are provided at both the front and rear ends of the top of the base, and the mounting plate is located in the displacement openings.

[0010] Furthermore, the threads on both sides of the surface of the threaded rod are in opposite directions, and one end of the threaded rod passes through the side wall of the base and is fixedly connected to a knob.

[0011] Furthermore, the bottom ends of the two displacement members are fixedly connected with guide blocks, the inner wall of the bottom end of the base is fixedly connected with a guide rail, and the two guide blocks are slidably connected to the guide rail.

[0012] Furthermore, a lug is fixedly connected to the bottom of the base.

[0013] Compared with the prior art, the utility model has the following advantages and effects:

[0014] 1. By setting a shell at the output end of the fan body, the filter inside it can filter and block the dust and particles in the air. After working for a long time, the motor can be started to drive the brush at one end of the rotating shaft to rotate, clean the surface of the filter, and clear the accumulated and blocked dust to avoid affecting the air delivery. After the maintenance plate is removed, the dust and particles in the shell can be cleaned.

[0015] 2. By turning the knob to drive the threaded rod to rotate, the displacement parts on both sides move horizontally in opposite directions, thereby driving the locking rod on the top of the mounting plate to move, so that the locking rod disengages from or engages in the locking groove of the mounting part, and the fan body can be disassembled and assembled, which is convenient and quick, and facilitates the maintenance and repair of the fan body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side cross-sectional view of the base in the utility model;

[0018] Figure 3 It is a partial rear perspective view of the utility model;

[0019] Figure 4 It is a cross-sectional view of the shell in the utility model.

[0020] In the figure: fan body 1, base 2, mounting part 3, threaded rod 4, bearing 1 5, knob 6, displacement part 7, guide block 8, guide rail 9, mounting plate 10, locking rod 11, locking groove 12, displacement opening 13, limit strip 14, lug 15, housing 16, air inlet 17, filter 18, motor 19, rotating shaft 20, brush 21, bearing 2 22, maintenance plate 23. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0022] See also Figures 1 to 4 A stable fan for a coal-fired boiler in a power station comprises a fan body 1 and a base 2. The bottom of the fan body 1 is fixedly connected with a mounting member 3, and the mounting member 3 is placed in the middle of the top of the base 2; the inner walls on both sides of the base 2 are rotatably connected with threaded rods 4 through bearings 5, and displacement members 7 are threadedly sleeved at both ends of the threaded rods 4, and a mounting plate 10 is fixedly connected to the top of the displacement member 7, and a plurality of locking rods 11 are fixedly connected to the top of the mounting plate 10, and a plurality of locking grooves 12 are provided on both sides of the mounting member 3, and the plurality of locking rods 11 are respectively plugged into the plurality of locking grooves 12; a shell 16 is fixedly connected to the input end of the fan body 1, and an air inlet 17 is provided on the shell 16, a filter screen 18 is clamped on the side of the shell 16 close to the fan body 1, and a motor 19 is installed on the side of the shell 16 away from the fan body 1.

[0023] When in use, the fan body 1 can transport the oxygen required for fuel combustion in the coal-fired boiler of the power station with the help of a pipeline. The shell 16 arranged at the output end of the fan body 1 and the filter 18 inside it can filter and block dust and particulate matter in the air to prevent them from being transported into the boiler. The fan body 1 can be disassembled and assembled conveniently and quickly, which is conducive to the maintenance and repair of the fan body 1.

[0024] The output end of the motor 19 passes through the side wall of the housing 16 and is fixedly connected to a rotating shaft 20. A bearing 22 is sleeved at the connection between the output end of the motor 19 and the housing 16 to improve the rotation stability. A brush 21 is fixedly connected to one end of the rotating shaft 20 to play a role in dredging. An air inlet 17 is provided on the front of the housing 16 for inputting air. A maintenance plate 23 is installed at the bottom of the housing 16 by bolts and can be disassembled. After the maintenance plate 23 is removed, dust and particles in the housing 16 can be cleaned.

[0025] When in use, after the fan body 1 is started, external air is introduced from the air inlet 17. After the fan body 1 has worked for a long time, the motor 19 can be started to drive the brush 21 at one end of the rotating shaft 20 to rotate, clean the surface of the filter 18, and clear the accumulated and blocked dust to avoid affecting the air delivery. The maintenance plate 23 can be removed to discharge the dust and particulate matter in the shell 16.

[0026] The left and right sides of the top of the base 2 are fixedly connected with limit strips 14, and the limit strips 14 are arranged on the outside of the mounting member 3. The limit strips 14 can play a positioning role when the fan body 1 is installed on the base 2. Displacement openings 13 are opened at the front and rear ends of the top of the base 2 to provide movement space, and the mounting plate 10 is located in the displacement opening 13. The threads on both sides of the surface of the threaded rod 4 are in opposite directions, and one end of the threaded rod 4 passes through the side wall of the base 2 and is fixedly connected with a knob 6 for easy rotation. The bottom ends of the two displacement members 7 are fixedly connected with guide blocks 8, and the inner wall of the bottom end of the base 2 is fixedly connected with a guide rail 9 to play a guiding role. The two guide blocks 8 are slidably connected to the guide rail 9. The bottom of the base 2 is fixedly connected with a lug 15 to play a mounting role.

[0027] When in use, fasteners are used to fix the base 2 at the fan installation location at the lug 15, and the threaded rod 4 is driven to rotate by turning the knob 6. Since the two sides of the surface of the threaded rod 4 have opposite thread directions, and under the guidance of the guide block 8 and the guide rail 9, the displacement members 7 on both sides can move horizontally in opposite directions, thereby driving the mounting plate 10 to move at the displacement opening 13, so that the locking rod 11 on the top is disengaged from the locking groove 12 of the mounting member 3, and the fan body 1 can be removed.

[0028] During specific use, the fan body 1 can transport oxygen for fuel combustion in the coal-fired boiler of the power station with the help of a pipeline. By setting a shell 16 at the output end of the fan body 1, the filter 18 inside it can filter and block dust and particulate matter in the air. After working for a long time, the motor 19 can be started to drive the brush 21 at one end of the rotating shaft 20 to rotate, clean the surface of the filter 18, and clear the accumulated and blocked dust to avoid affecting the air transportation. The threaded rod 4 is driven to rotate by turning the knob 6. Since the two sides of the surface of the threaded rod 4 have opposite thread directions, and under the guidance of the guide block 8 and the guide rail 9, the displacement members 7 on both sides can move horizontally in opposite directions, thereby driving the locking rod 11 on the top of the mounting plate 10 to move, so that the locking rod 11 is disengaged from or engaged in the locking groove 12 of the mounting member 3, and the fan body 1 can be disassembled and assembled, which is convenient and fast, and is conducive to the maintenance and repair of the fan body 1.

[0029] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0030] In addition, it should be noted that the above content described in this specification is only an example of the structure of the utility model. All equivalent changes made based on the structure, features and principles described in the utility model patent are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications, supplements or replace the specific embodiments described in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.

Claims

1. A stable fan for a coal-fired boiler in a power station, comprising a fan body (1) and a base (2), characterized in that: The bottom of the fan body (1) is fixedly connected to a mounting member (3), and the mounting member (3) is placed in the middle of the top of the base (2); the inner walls on both sides of the base (2) are rotatably connected to threaded rods (4) through bearings (5), and displacement members (7) are threadedly sleeved at both ends of the threaded rods (4), and the top of the displacement member (7) is fixedly connected to a mounting plate (10), and the top of the mounting plate (10) is fixedly connected to a plurality of locking rods (11), and a plurality of locking grooves (12) are provided on both sides of the mounting member (3), and the plurality of locking rods (11) are respectively connected to the plurality of locking grooves (12). ) plug-in; the input end of the fan body (1) is fixedly connected to a housing (16), an air inlet (17) is provided on the housing (16), a filter (18) is clamped on a side of the housing (16) close to the fan body (1), a motor (19) is installed on a side of the housing (16) away from the fan body (1), the output end of the motor (19) passes through the side wall of the housing (16) and is fixedly connected to a rotating shaft (20), one end of the rotating shaft (20) is fixedly connected to a brush (21), and a second bearing (22) is sleeved at the connection between the output end of the motor (19) and the housing (16).

2. The stable type fan for coal-fired boiler in power station according to claim 1, characterized in that: A maintenance plate (23) is installed at the bottom end of the housing (16).

3. The stable type fan for coal-fired boiler in power station according to claim 1, characterized in that: The left and right sides of the top of the base (2) are both fixedly connected to limit strips (14), and the limit strips (14) are arranged on the outside of the mounting member (3).

4. The stable type fan for coal-fired boiler of power station according to claim 1, characterized in that: Displacement openings (13) are provided at both the front and rear ends of the top of the base (2), and the mounting plate (10) is located in the displacement opening (13).

5. The stable type fan for coal-fired boiler in power station according to claim 1, characterized in that: The threads on both sides of the surface of the threaded rod (4) are in opposite directions, and one end of the threaded rod (4) passes through the side wall of the base (2) and is fixedly connected to a knob (6).

6. The stable type fan for coal-fired boiler in power station according to claim 1, characterized in that: The bottom ends of the two displacement members (7) are fixedly connected to guide blocks (8), the inner wall of the bottom end of the base (2) is fixedly connected to a guide rail (9), and the two guide blocks (8) are slidably connected to the guide rail (9).

7. The stable type fan for coal-fired boiler in power station according to claim 1, characterized in that: A lug (15) is fixedly connected to the bottom of the base (2).

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