Environment-friendly slag discharging structure of thermal power plant boiler

Abstract

The utility model discloses a thermal power plant boiler environment-friendly slag discharge structure which comprises a boiler, the inner wall of the boiler is fixedly connected with a hot water plate, the left side of the hot water plate is communicated with a water conveying pipe, the left side of the water conveying pipe penetrates to the left side of the boiler, and the left side and the right side of the inner wall of the boiler are both fixedly connected with combustors. The first motor is started, the output end of the first motor drives the scraping plate to move back and forth in a reciprocating mode, slag adhering to the bottom of the boiler is brushed off through the scraping plate, then the second motor and the water pump are started, the output end of the second motor drives the spiral conveying rod to rotate, and the spiral conveying rod drives the slag to move from the front side. Water is sprayed out of the water spraying box through the water pump, the furnace slag is wetted, then the wetted furnace slag is discharged away from the slag discharging pipe through the spiral conveying rod, the furnace slag can be cleaned at the moment, and therefore the effect of the environment-friendly furnace slag discharging structure is achieved.

Description

Technical Field

[0001] This utility model relates to the field of thermal power plant boiler technology, specifically to an environmentally friendly slag discharge structure for thermal power plant boilers. Background Technology

[0002] Boilers are key equipment in thermal power plants, used to convert the chemical energy of fuel into thermal energy, which in turn heats feedwater to produce steam, providing power for power generation. In a thermal power plant, the working principle of a boiler is to convert the chemical energy of fuel into the thermal energy of flames and flue gas through combustion, and then into the thermal energy of water and steam through heat transfer. In this process, the boiler undergoes two basic processes: the combustion of fuel and the heat absorption of steam and water. In addition, thermal power plant boilers are diverse in type and structure, and can be classified according to factors such as fuel type, combustion method, boiler capacity, and steam parameters. Different types of boilers also differ in structure and characteristics, but all aim to meet the power generation needs of thermal power plants.

[0003] In the process of generating electricity in a thermal power plant, boilers are used to heat water to produce high-pressure steam. However, existing boilers do not have an environmentally friendly slag discharge structure. Currently, thermal power plant boilers mostly burn coal powder for heating. After the coal powder is burned, a large amount of fine dust residue is produced. When cleaning the slag, the dust residue is scattered into the air, causing air pollution.

[0004] Therefore, it is necessary to redesign and modify the boilers of thermal power plants to enable them to have an environmentally friendly slag discharge structure. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide an environmentally friendly slag discharge structure for thermal power plant boilers. This structure has the advantages of an environmentally friendly slag discharge structure and solves the problem that boilers currently lack such a structure. Currently, thermal power plant boilers mostly use coal powder for heating, which produces a large amount of fine dust residue after combustion. When cleaning the slag, this dust residue is scattered into the air, causing air pollution.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly slag discharge structure for a thermal power plant boiler, comprising a boiler, a hot water plate fixedly connected to the inner wall of the boiler, a water supply pipe connected to the left side of the hot water plate, the left side of the water supply pipe extending to the left side of the boiler, burners fixedly connected to both the left and right sides of the inner wall of the boiler, a pulverized coal conveying pipe connected to the outer side of the burners, the outer side of the pulverized coal conveying pipe extending to the surface of the boiler, a motor fixedly connected to the rear side of the boiler, the output end of the motor extending to the rear side of the inner wall of the boiler and fixedly connected to a reciprocating screw, the front side of the reciprocating screw being movably connected to the front side of the inner wall of the boiler via a bearing, and a sliding connection for the reciprocating screw to cooperate with the boiler. The scraper used has a second motor fixedly connected to the rear side of the boiler and at the bottom of the first motor. The output end of the second motor extends through the rear side of the inner wall of the boiler and is fixedly connected to a spiral conveying rod. The front side of the spiral conveying rod extends through the front side of the boiler. A slag discharge pipe is sleeved on the surface of the spiral conveying rod and located at the front side of the boiler. The rear side of the slag discharge pipe communicates with the front side of the boiler. A placement box is fixedly connected to the front side of the boiler. A water inlet pipe is connected to the top of the placement box. A water pump that works with the water inlet pipe is fixedly connected to the bottom of the inner wall of the placement box. The output end of the water pump extends through the front side of the placement box and is connected to a connecting pipe. A water spray box is connected to the bottom of the connecting pipe. The bottom of the water spray box communicates with the top of the slag discharge pipe.

[0007] As a preferred embodiment of this utility model, a protective shell is fitted onto the surface of the connecting pipe, and the rear side of the protective shell is fixedly connected to the front side of the boiler.

[0008] As a preferred embodiment of this utility model, a protective shell second is fitted onto the surface of the motor first, and the front side of the protective shell second is fixedly connected to the rear side of the boiler.

[0009] As a preferred embodiment of this invention, the top of the protective shell is provided with heat dissipation holes, which are elongated in shape.

[0010] As a preferred embodiment of this invention, four impurity filters are fixedly connected to the inner wall of the placement box and to the top of the water pump.

[0011] As a preferred embodiment of this invention, the bottom of the boiler is fixedly connected with a support leg, and the support leg is H-shaped.

[0012] As a preferred embodiment of this invention, the bottom of the support leg is fixedly connected with an anti-slip block, the anti-slip block being made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model first starts motor one, the output end of motor one drives the scraper to move back and forth, and the scraper brushes off the slag adhering to the bottom of the boiler. Next, motor two and water pump are started. The output end of motor two drives the screw conveyor to rotate, and the screw conveyor moves the front side of the slag. When the slag moves into the slag discharge pipe, the water pump sprays water from the spray box to wet the slag. Then the wetted slag is discharged from the slag discharge pipe through the screw conveyor. At this time, the slag can be cleaned, so as to achieve the effect of an environmentally friendly slag discharge structure.

[0015] 2. By providing a protective shell, this utility model can protect the connecting pipe from damage caused by collisions during use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional view of the boiler structure of this utility model;

[0017] Figure 2 This is a left sectional view of the boiler structure of this utility model;

[0018] Figure 3 This is a front sectional view of the boiler structure of this utility model;

[0019] Figure 4 This is a rear view of the boiler structure of this utility model.

[0020] In the diagram: 1. Boiler; 2. Hot water plate; 3. Water supply pipe; 4. Burner; 5. Pulverized coal conveying pipe; 6. Motor 1; 7. Reciprocating screw; 8. Scraper; 9. Motor 2; 10. Screw conveyor; 11. Slag discharge pipe; 12. Placement box; 13. Water inlet pipe; 14. Water pump; 15. Connecting pipe; 16. Spray box; 17. Protective shell 1; 18. Protective shell 2; 19. Heat dissipation hole; 20. Impurity filter screen; 21. Support leg; 22. Anti-slip block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4As shown, this utility model provides an environmentally friendly slag discharge structure for a thermal power plant boiler, including a boiler 1. A hot water plate 2 is fixedly connected to the inner wall of the boiler 1. The hot water plate 2 is a hollow U-shaped plate structure. A water supply pipe 3 is connected to the left side of the hot water plate 2, and the left side of the water supply pipe 3 extends to the left side of the boiler 1. Burners 4 are fixedly connected to both the left and right sides of the inner wall of the boiler 1. A pulverized coal conveying pipe 5 is connected to the outer side of the burners 4, and the outer side of the pulverized coal conveying pipe 5 extends to the surface of the boiler 1. A motor 6 is fixedly connected to the rear side of the boiler 1. The output end of the motor 6 extends to the rear side of the inner wall of the boiler 1 and is fixedly connected to a reciprocating screw 7. The front side of the reciprocating screw 7 is movably connected to the front side of the inner wall of the boiler 1 through a bearing. A scraper 8 that works with the boiler 1 is slidably connected to the surface of the reciprocating screw 7. A second motor 9 is fixedly connected to the rear side of the boiler 1 and at the bottom of the first motor 6. The output end of the second motor 9 passes through the rear side of the inner wall of the boiler 1 and is fixedly connected to a screw conveyor 10. The front side of the screw conveyor 10 passes through the front side of the boiler 1. A slag discharge pipe 11 is sleeved on the surface of the screw conveyor 10 and at the front side of the boiler 1. The rear side of the slag discharge pipe 11 is connected to the front side of the boiler 1. A placement box 12 is fixedly connected to the front side of the boiler 1. A water inlet pipe 13 is connected to the top of the placement box 12. A water pump 14, which works with the water inlet pipe 13, is fixedly connected to the bottom of the inner wall of the placement box 12. The output end of the water pump 14 passes through the front side of the placement box 12 and is connected to a connecting pipe 15. A water spray box 16 is connected to the bottom of the connecting pipe 15. The bottom of the water spray box 16 is connected to the top of the slag discharge pipe 11.

[0023] refer to Figure 1 A protective shell 17 is fitted onto the surface of the connecting pipe 15, and the rear side of the protective shell 17 is fixedly connected to the front side of the boiler 1.

[0024] As a technical optimization of this utility model, by setting a protective shell 17, the connecting pipe 15 can be protected and prevented from being damaged by collision during use.

[0025] refer to Figure 4 The surface of motor 16 is fitted with a protective shell 2 18, and the front side of the protective shell 2 18 is fixedly connected to the rear side of boiler 1.

[0026] As a technical optimization of this utility model, by setting a protective shell 2 18, the motor 6 can be protected, making the motor 6 less prone to damage.

[0027] refer to Figure 4 The top of the protective shell has a heat dissipation hole 19, which is elongated in shape.

[0028] As a technical optimization of this utility model, by setting heat dissipation holes 19, the motor 6 can be cooled, preventing the motor 6 from being damaged due to overheating.

[0029] refer to Figure 2 An impurity filter screen 20 is fixedly connected to the inner wall of the placement box 12 and located on top of the water pump 14. There are four impurity filter screens 20.

[0030] As a technical optimization of this utility model, by setting an impurity filter screen 20, impurities in the water can be filtered to prevent them from entering the water pump 14.

[0031] refer to Figure 1 Boiler 1 is fixedly connected to a support leg 21, which is H-shaped.

[0032] As a technical optimization of this utility model, by setting the support leg 21, the boiler 1 can be supported, making the boiler 1 more stable.

[0033] refer to Figure 1 The bottom of the support leg 21 is fixedly connected to an anti-slip block 22, which is made of rubber.

[0034] As a technical optimization of this utility model, by setting the anti-slip block 22, the friction between the outrigger 21 and the ground can be increased, preventing the outrigger 21 from slipping during use.

[0035] The working principle and usage process of this utility model are as follows: First, start motor 6. The output of motor 6 drives the reciprocating screw 7 to rotate, causing the scraper 8 to move back and forth. The scraper 8 brushes off the slag adhering to the bottom of the boiler 1, allowing the slag to fall onto the screw conveyor 10. Next, start motor 9 and water pump 14. The output of motor 9 drives the screw conveyor 10 to rotate, causing the screw conveyor 10 to move the front of the slag. When the slag moves into the slag discharge pipe 11, the input of water pump 14 absorbs water through the inlet pipe 13, allowing the water to be discharged from the output of water pump 14. The water is then sprayed onto the slag through the connecting pipe 15 and the spray box 16, wetting the slag. The wetted slag is then discharged from the slag discharge pipe 11 through the screw conveyor 10, thus cleaning the slag and achieving the effect of an environmentally friendly slag discharge structure.

[0036] In summary, the environmentally friendly slag discharge structure of this thermal power plant boiler, through the installation of boiler 1, hot water plate 2, water supply pipe 3, burner 4, pulverized coal conveying pipe 5, motor 1 6, reciprocating screw 7, scraper 8, motor 2 9, screw conveyor 10, slag discharge pipe 11, placement box 12, water inlet pipe 13, water pump 14, connecting pipe 15, and spray water box 16, solves the problem of boilers lacking an environmentally friendly slag discharge structure. Currently, thermal power plant boilers mostly burn coal pulverized coal for heating. After the coal pulverized coal is burned, a large amount of fine dust residue is produced. When cleaning the slag, the dust residue is scattered into the air, causing air pollution.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An environmentally friendly slag discharge structure for a boiler of a thermal power plant, comprising a boiler (1), characterized in that: The inner wall of the boiler (1) is fixedly connected with a hot water plate (2), a water delivery pipe (3) is communicated with the left side of the hot water plate (2), the left side of the water delivery pipe (3) penetrates to the left side of the boiler (1), the left side and the right side of the inner wall of the boiler (1) are fixedly connected with burners (4), the outer side of the burner (4) is communicated with a pulverized coal delivery pipe (5), the outer side of the pulverized coal delivery pipe (5) penetrates to the surface of the boiler (1), the rear side of the boiler (1) is fixedly connected with a motor one (6), the output end of the motor one (6) penetrates to the rear side of the inner wall of the boiler (1) and is fixedly connected with a reciprocating lead screw (7), the front side of the reciprocating lead screw (7) is movably connected with the front side of the inner wall of the boiler (1) through a bearing, the surface of the reciprocating lead screw (7) is slidably connected with a scraper (8) used in cooperation with the boiler (1), the rear side of the boiler (1) and located at the bottom of the motor one (6) is fixedly connected with a motor two (9), the output end of the motor two (9) penetrates to the rear side of the inner wall of the boiler (1) and is fixedly connected with a spiral conveying rod (10), the front side of the spiral conveying rod (10) penetrates to the front side of the boiler (1), the surface of the spiral conveying rod (10) and located at the front side of the boiler (1) is sleeved with a slag discharge pipe (11), the rear side of the slag discharge pipe (11) is communicated with the front side of the boiler (1), the front side of the boiler (1) is fixedly connected with a placing box (12), the top of the placing box (12) is communicated with a water inlet pipe (13), the bottom of the inner wall of the placing box (12) is fixedly connected with a water pump (14) used in cooperation with the water inlet pipe (13), the output end of the water pump (14) penetrates to the front side of the placing box (12) and is communicated with a connecting pipe (15), the bottom of the connecting pipe (15) is communicated with a water spraying box (16), the bottom of the water spraying box (16) and the top of the slag discharge pipe (11) are communicated with each other.

2. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 1, characterized in that: The surface of the connecting pipe (15) is sleeved with a protective shell one (17), the rear side of the protective shell one (17) is fixedly connected with the front side of the boiler (1).

3. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 1, characterized in that: The surface of the motor one (6) is sleeved with a protective shell two (18), the front side of the protective shell two (18) is fixedly connected with the rear side of the boiler (1).

4. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 3, characterized in that: The top of the protective shell is provided with a heat dissipation hole (19), and the heat dissipation hole (19) is in the shape of a long strip.

5. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 1, characterized in that: The inner wall of the placing box (12) and located at the top of the water pump (14) is fixedly connected with an impurity filter screen (20), and the number of the impurity filter screen (20) is four.

6. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 1, characterized in that: The bottom of the boiler (1) is fixedly connected with a supporting leg (21), and the supporting leg (21) is in the shape of H.

7. The environmentally friendly slag discharge structure of a boiler of a thermal power plant according to claim 6, characterized in that: The bottom of the supporting leg (21) is fixedly connected with an anti-skid block (22), and the material of the anti-skid block (22) is rubber.

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