Automatic unblocking structure of fuel screening and crushing system of thermal power plant

Abstract

The utility model discloses an automatic unblocking structure of a thermal power plant fuel screening and crushing system, which comprises a purging bin body, a screening and crushing screen plate is arranged in the purging bin body, an automatic unblocking mechanism is further arranged on the purging bin body, and the automatic unblocking mechanism comprises a rack, a lifting frame, a protective cover, a telescopic air inlet pipe, a purging pipe and a purging nozzle. The machine frame is detachably installed on the outer side wall of the purging bin body through an installation base, the lifting frame is installed on one side of the machine frame in a lifting mode through a lifting assembly, the protective cover is rotatably installed on the lower side of the lifting frame through an adjusting assembly, a penetrating opening for the protective cover to move is formed in the purging bin body, and a sealing ring is fixedly connected to the penetrating opening. According to the automatic unblocking structure of the thermal power plant fuel screening and crushing system, the rack, the lifting frame, the protective cover, the telescopic air inlet pipe, the purging pipe, the purging nozzle and the like are matched with the screening and crushing net plate for automatic cleaning, meanwhile, the interior of the purging nozzle is conveniently cleaned, and therefore the influence of blocking on the follow-up purging efficiency is conveniently reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of clearing blockage structures, in particular to an automatic clearing blockage structure for a fuel screening and crushing system of a thermal power plant. Background Art

[0002] A thermal power plant is a plant that uses combustibles (such as coal) as fuel to produce electricity. When the fuel is burned, it heats water to generate steam, converting the chemical energy of the fuel into thermal energy. The steam pressure drives the turbine to rotate, converting the thermal energy into mechanical energy. The turbine then drives the generator to rotate, converting the mechanical energy into electrical energy. In the fuel screening and crushing system of a thermal power plant, in order to prevent the coal crusher from clogging, the coal needs to be screened, and in order to reduce the clogging of the coal screening machine, the screen plate needs to be cleaned manually, but the manual cleaning efficiency is low and the screening range is not comprehensive.

[0003] In order to improve the automatic cleaning efficiency of the sieve plate, after searching, the utility model with patent publication number CN219648098U discloses an automatic clearing device for the fuel screening and crushing system of a thermal power plant. By arranging an installation panel on the upper panel of the coal screening machine shell, a purge bin connected to a purge nozzle is installed on the installation panel, and compressed air is passed into the purge bin, so that the compressed air blown out by the purge nozzle generates a flushing force on the sieve plate to effectively remove the coal accumulated in the sieve holes. Although it is convenient for automatic cleaning of the sieve plate, the purge nozzle is easily clogged with coal ash after a long period of purge work, which is not convenient for cleaning, thereby easily reducing the subsequent purge efficiency, and further affecting the final cleaning effect of the sieve plate in the fuel screening and crushing system of the thermal power plant. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides an automatic clearing structure for a fuel screening system of a thermal power plant to solve the problem in the background art that it is inconvenient to clean the inside of a purge nozzle, which easily reduces the subsequent purge efficiency.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic clearing structure of a fuel screening system of a thermal power plant, comprising a purge bin, a screening screen is installed in the purge bin, an automatic clearing mechanism is also installed on the purge bin, and the automatic clearing mechanism comprises a frame, a lifting frame, a protective cover, a telescopic air inlet pipe, a purge pipe and a purge nozzle;

[0008] The frame is detachably mounted on the outer side wall of the purge bin body through a mounting seat;

[0009] The lifting frame is lifted and installed on one side of the frame through a lifting assembly;

[0010] The protective cover is rotatably mounted on the lower side of the lifting frame through an adjustment assembly, and a through opening for the protective cover to move is provided on the purge bin body;

[0011] The telescopic air inlet pipe is connected through one side of the protective cover;

[0012] The purge pipe is connected to the telescopic air inlet pipe, and the purge pipe is arranged in the protective cover;

[0013] The purging nozzles are arranged in plurality, and the plurality of purging nozzles are connected to the purging pipe via a plurality of threaded pipes with staggered threads.

[0014] Preferably, the lifting assembly comprises:

[0015] An electric push rod, the electric push rod is installed on the frame;

[0016] A lifting plate, the lifting plate is fixedly connected to the output end of the electric push rod;

[0017] A lifting rod, wherein two lifting rods are provided, and both of the two lifting rods are fixedly connected between the lifting plate and the lifting frame.

[0018] Furthermore, the adjustment component includes:

[0019] A bidirectional motor, wherein the bidirectional motor is mounted on the lifting frame via a mounting frame;

[0020] An adjusting rod, wherein two adjusting rods are provided, and both adjusting rods are fixedly connected to the output end of the bidirectional motor, and the adjusting rods are rotatably connected to the lifting frame through the adjusting rods;

[0021] The adjusting plate is provided in two pieces, and the two adjusting plates are fixedly connected between the two adjusting rods and the protective cover.

[0022] As a further solution of the present application, the mounting seat includes:

[0023] A mounting plate, the mounting plate being fixedly connected to the bottom end of the frame;

[0024] Mounting screws, wherein two mounting screws are provided, and the two mounting screws are symmetrically threadedly connected between the mounting plate and the purge bin body.

[0025] Based on the above scheme, two positioning blocks are symmetrically connected to the lifting frame, and the positioning blocks are provided with adjustment grooves for rotating the adjusting rod. A positioning plate is fixedly connected to one side of the adjusting rod, and the positioning blocks are provided with positioning grooves for rotating the positioning plate.

[0026] It should also be noted that a plurality of connecting plates are fixedly connected to the inner wall of the protective cover, and a plurality of connecting plates are provided with connecting ports for installing the purge pipe.

[0027] (III) Beneficial effects

[0028] Compared with the prior art, the utility model provides an automatic clearing structure for the fuel screening and crushing system of a thermal power plant, which has the following beneficial effects:

[0029] 1. In the utility model, the cooperation between the purge bin and the screening screen is convenient for screening the fuel in the thermal power plant. At the same time, the mounting seat is convenient for mounting the frame on the purge bin, so that multiple purge nozzles can be mounted through the lifting frame, lifting assembly, protective cover, adjustment assembly and purge pipe;

[0030] 2. In the utility model, the lifting frame is conveniently moved on one side of the frame through the lifting assembly, so that the purge pipe can be moved through the adjustment assembly and the protective cover, thereby facilitating the adjustment of the use position of the purge nozzle, and then the purge nozzle can be moved to a suitable cleaning position;

[0031] 3. In the utility model, the purge pipe can be rotated at the lower side of the protective cover by adjusting the assembly, so that the multiple purge nozzles can be rotated by multiple threaded tubes, thereby facilitating the adjustment of the purge angle and cleaning angle of the purge nozzles;

[0032] 4. In the utility model, the threaded groove facilitates the installation and removal of the threaded pipe on the purge pipe, so as to facilitate the installation and removal of the purge nozzle, thereby facilitating the removal and cleaning of the purge nozzle;

[0033] 5. Therefore, compared with the prior art, the automatic clearing structure of the fuel screening system of the thermal power plant is not convenient for cleaning the inside of the purge nozzle, which easily reduces the subsequent purge efficiency. It is convenient for automatic cleaning through the coordinated screening screen plates of the frame, lifting frame, protective cover, telescopic air inlet pipe, purge pipe and purge nozzle, and at the same time it is convenient to clean the inside of the purge nozzle, thereby reducing the impact of blockage on the subsequent purge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall three-dimensional structure of this application;

[0035] Figure 2 This is a schematic diagram of the exploded structure of the purge bin, protective cover and lifting frame of this application;

[0036] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover, purge nozzle and threaded pipe in this application;

[0037] Figure 4 This is a schematic diagram of the exploded three-dimensional structure of the protective cover, positioning block and positioning plate of the present application.

[0038] In the figure: 1. Purge bin body; 2. Rack; 3. Lifting frame; 4. Protective cover; 5. Telescopic air inlet pipe; 6. Purge pipe; 7. Purge nozzle; 8. Threaded pipe; 9. Electric push rod; 10. Lifting plate; 11. Lifting rod; 12. Bidirectional motor; 13. Adjusting rod; 14. Adjusting plate; 15. Mounting plate; 16. Mounting screws; 17. Positioning block; 18. Positioning plate; 19. Connecting plate. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] See also Figures 1 to 4 , an automatic clearing structure of a fuel screening system of a thermal power plant, comprising a purge bin body 1, a screening mesh plate installed in the purge bin body 1, which is convenient for screening the fuel of the thermal power plant, and an automatic clearing mechanism is also installed on the purge bin body 1, the automatic clearing mechanism comprises a frame 2, a lifting frame 3, a protective cover 4, a telescopic air inlet pipe 5, a purge pipe 6 and a purge nozzle 7, the frame 2 is detachably mounted on the outer wall of the purge bin body 1 through a mounting seat, the lifting frame 3 is lifted and installed on one side of the frame 2 through a lifting assembly, the protective cover 4 is rotatably installed on the lower side of the lifting frame 3 through an adjusting assembly, and a through opening for the protective cover 4 to move is opened on the purge bin body 1, and a sealing ring is fixedly connected at the through opening to facilitate sealing the gap between the protective cover 4 and the purge bin body 1, the telescopic air inlet pipe 5 is connected through one side of the protective cover 4, and the purge pipe 6 is connected to the telescopic air inlet pipe 5, The telescopic air inlet pipe 5 can be expanded or contracted with the movement of the purge pipe 6, and the purge pipe 6 is arranged in the protective cover 4. A plurality of connecting plates 19 are fixedly connected to the inner wall of the protective cover 4. The plurality of connecting plates 19 are provided with connecting ports for installing the purge pipe 6. Through the cooperation of the plurality of connecting plates 19 and the plurality of connecting ports, it is convenient for the protective cover 4 to drive the purge pipe 6 to move stably. The purge nozzles 7 are arranged in plurality. The plurality of purge nozzles 7 are connected to the purge pipe 6 through a plurality of staggered threads of the threaded pipes 8. The purge pipe 6 is provided with a plurality of threaded grooves matching the threaded pipes 8, which is convenient for installing and disassembling the threaded pipes 8 on the purge pipe 6, so as to install and disassemble the purge nozzles 7, thereby facilitating the disassembly and cleaning of the purge nozzles 7. At the same time, through the staggered arrangement of the plurality of purge nozzles 7, it is convenient to carry out all-round purge and cleaning of the screening mesh.

[0041] See also Figures 1 to 4 The lifting assembly includes an electric push rod 9, a lifting plate 10 and a lifting rod 11. The electric push rod 9 is installed on the frame 2. The lifting plate 10 is fixedly connected to the output end of the electric push rod 9. There are two lifting rods 11, and both of the two lifting rods 11 are fixedly connected between the lifting plate 10 and the lifting frame 3.

[0042] By pushing the lifting plate 10 through the electric push rod 9, the lifting plate 10 can push the lifting frame 3 through the two lifting rods 11, so that it is convenient to move the protective cover 4 at the through-hole through the bidirectional motor 12, the adjusting rod 13 and the adjusting plate 14, and then the use height and cleaning height of the purge nozzle 7 can be adjusted.

[0043] See also Figures 1 to 4 , the adjustment component includes a bidirectional motor 12, an adjustment rod 13 and an adjustment plate 14, the bidirectional motor 12 is installed on the lifting frame 3 through a mounting frame, the bidirectional motor 12 is set to automatically perform forward and reverse movements, two adjustment rods 13 are set, the two adjustment rods 13 are fixedly connected to the output end of the bidirectional motor 12, the two adjustment rods 13 have the same rotation direction, and the adjustment rod 13 is connected to the lifting frame 3 through rotation, and the lifting frame 3 is symmetrically connected with two positioning blocks 17, the positioning block 17 is provided with an adjustment groove for the adjustment rod 13 to rotate, and a positioning plate 18 is fixedly connected to one side of the adjustment rod 13, and a positioning groove for the positioning plate 18 to rotate is provided on the positioning block 17. Through the cooperation of the positioning plate 18 and the positioning groove, the stability of the adjustment rod 13 rotating in the adjustment groove can be increased, thereby facilitating the increase of the stability of the adjustment rod 13 rotating through the lifting frame 3, and the adjustment plate 14 is set to two, and the two adjustment plates 14 are fixedly connected between the two adjustment rods 13 and the protective cover 4;

[0044] By rotating the two adjusting rods 13 through the bidirectional motor 12, the two adjusting rods 13 can drive the protective cover 4 to rotate through the two adjusting plates 14, so that the protective cover 4 can drive the purge pipe 6 to rotate through multiple connecting plates 19, thereby facilitating the adjustment of the purge angle and cleaning angle of the purge nozzle 7.

[0045] See also Figures 1 to 4 The mounting base includes a mounting plate 15 and mounting screws 16. The mounting plate 15 is fixedly connected to the bottom end of the frame 2. The mounting screws 16 are provided in two numbers. The two mounting screws 16 are symmetrically threadedly connected between the mounting plate 15 and the purge bin body 1.

[0046] The two mounting screws 16 facilitate installation and removal of the mounting plate 15 on the purge bin body 1 , so as to facilitate installation and removal of the frame 2 .

[0047] In summary, the automatic clearing structure of the fuel screening system of the thermal power plant can purge and clean the screening mesh plate through multiple purge nozzles 7. When it is necessary to clean multiple purge nozzles 7, the lifting plate 10 is pulled by the electric push rod 9, so that the lifting plate 10 pulls the lifting frame 3 through two lifting rods 11, so that the protective cover 4 is pulled out of the purge bin body 1 through the two-way motor 12, two adjusting rods 13 and two adjusting plates 14, so as to facilitate the adjustment of the cleaning height of the purge pipe 6 and the purge nozzle 7. When the purge nozzle 7 moves to a suitable cleaning height, the two adjusting rods 13 are rotated by the two-way motor 12, so that the two adjusting rods 13 drive the protective cover 4 to rotate through the two adjusting plates 14, so that the protective cover 4 rotates the purge pipe 6 through multiple connecting plates 19, so that the cleaning angle of the purge nozzle 7 can be adjusted, and then the threaded pipe 8 is rotated on the purge pipe 6, and the threaded pipe 8 and the purge nozzle 7 on the purge pipe 6 can be disassembled.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic clearing structure for a fuel screening system of a thermal power plant, comprising a purge bin (1), characterized in that: The purge bin body (1) is provided with an automatic clearing mechanism, and the automatic clearing mechanism comprises: A frame (2), the frame (2) being detachably mounted on the outer side wall of the purge bin body (1) via a mounting seat; a lifting frame (3), the lifting frame (3) being lifted and installed on one side of the frame (2) by means of a lifting assembly; a protective cover (4), the protective cover (4) being rotatably installed on the lower side of the lifting frame (3) by means of an adjustment assembly, and a through opening for the protective cover (4) to move is provided on the purge bin body (1); A telescopic air inlet pipe (5), the telescopic air inlet pipe (5) penetrating and connected to one side of the protective cover (4); a purge pipe (6), the purge pipe (6) being connected to the telescopic air inlet pipe (5), and the purge pipe (6) being arranged in the protective cover (4); A purge nozzle (7), wherein the purge nozzle (7) is arranged in plurality, and the plurality of purge nozzles (7) are staggeredly threadedly connected to the purge pipe (6) via a plurality of threaded pipes (8).

2. The automatic clearing structure of the fuel screening system of a thermal power plant according to claim 1 is characterized in that: The lifting assembly comprises: An electric push rod (9), wherein the electric push rod (9) is mounted on the frame (2); A lifting plate (10), wherein the lifting plate (10) is fixedly connected to the output end of the electric push rod (9); A lifting rod (11), wherein two lifting rods (11) are provided, and both of the two lifting rods (11) are fixedly connected between the lifting plate (10) and the lifting frame (3).

3. The automatic clearing structure of the fuel screening and crushing system of a thermal power plant according to claim 2 is characterized in that: The adjustment component comprises: a bidirectional motor (12), the bidirectional motor (12) being mounted on the lifting frame (3) via a mounting frame; An adjusting rod (13), wherein two adjusting rods (13) are provided, and both adjusting rods (13) are fixedly connected to the output end of the bidirectional motor (12), and the adjusting rod (13) is rotatably connected to the lifting frame (3); An adjustment plate (14), wherein two adjustment plates (14) are provided, and the two adjustment plates (14) are fixedly connected between the two adjustment rods (13) and the protective cover (4).

4. The automatic clearing structure of the fuel screening system of a thermal power plant according to claim 3 is characterized in that: The mounting seat comprises: A mounting plate (15), the mounting plate (15) being fixedly connected to the bottom end of the frame (2); The mounting screws (16) are arranged in two numbers, and the two mounting screws (16) are symmetrically threadedly connected between the mounting plate (15) and the purge bin body (1).

5. The automatic clearing structure of the fuel screening system of a thermal power plant according to claim 4 is characterized in that: The lifting frame (3) is symmetrically connected to two positioning blocks (17), each of which is provided with an adjustment slot for the adjustment rod (13) to rotate, and a positioning plate (18) is fixedly connected to one side of the adjustment rod (13), and each of which is provided with a positioning slot for the adjustment plate (18) to rotate.

6. The automatic clearing structure of the fuel screening and crushing system of a thermal power plant according to claim 5 is characterized in that: A plurality of connecting plates (19) are fixedly connected to the inner side wall of the protective cover (4), and each of the plurality of connecting plates (19) is provided with a connecting port for installing the purge pipe (6).

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