CN222560014U

CN222560014U - Circulating fluidized bed boiler feeding device

Info

Publication number: CN222560014U
Application number: CN202420365650.5U
Authority: CN
Inventors: 李国锋; 李国良; 程蕾
Original assignee: Weifang Shide Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Weifang Shide Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2024-02-28
Filing date: 2024-02-28
Publication date: 2025-03-04
Anticipated expiration: 2034-02-28

Abstract

The utility model relates to the technical field of boilers, and discloses a circulating fluidized bed boiler feeding device, which comprises a box body, a feeding port is arranged at the front end of the box body, and discharge cavities are arranged at both sides of the rear end of the box body, and a plurality of discharge ports are arranged on the discharge cavity, and a movable cavity is arranged between the discharge cavities on both sides, and a second hammer body is arranged in the movable cavity for limited sliding, a sliding sleeve is arranged at the top of the front end of the box body, and a first hammer body is arranged in the sliding sleeve for vertical limited sliding. The circulating fluidized bed boiler feeding device, after coal is poured into the feeding port, is crushed once under the chiseling of the first hammer body, and is crushed twice under the cooperation of the first hammer body and the second hammer body, and when the second hammer body is retracted and operated, the coal is discharged from the discharge cavities on both sides of the box body, thereby realizing a feeding device with the function of uniformly crushing coal blocks.

Description

Circulating fluidized bed boiler feeding device

Technical Field

The utility model relates to the technical field of boilers, in particular to a circulating fluidized bed boiler feeding device.

Background

The circulating fluidized bed boiler is a high-efficiency, energy-saving and environment-friendly coal-fired boiler, and the main structure of the boiler comprises a combustion chamber and a circulating furnace. In the combustion chamber, fuel (mainly coal) is mixed with air and burned to produce high temperature flue gas. The high-temperature flue gas then enters a circulating furnace, and in the circulating furnace, solid particles in the flue gas are separated out through a series of separators and a returning system and are circulated back to the combustion chamber, so that the circulating combustion of fuel is realized.

However, since the coal is in a block structure, the coal may not be fully combusted due to uneven combustion surface during the combustion of the coal, and harmful gas of carbon monoxide is generated.

For example, the feeding device of the circulating fluidized bed boiler disclosed in China patent application No. CN202321582616.5 comprises a feeding shell, a hopper, a crushing roller, a conveying auger, a grinding belt and a driving mechanism, wherein the feeding device can sequentially crush and grind coal materials and then convey the crushed coal materials into a hearth for combustion, so that the conveyed coal materials are finer, the treatment effect of the conveyed coal materials is better, and the specification discloses that the circulating fluidized bed boiler adopts fluidized combustion and is a clean coal combustion technology with the highest industrialization degree. A circulating fluidized bed boiler system is generally composed of a fluidized bed combustion chamber (furnace), a circulating ash separator, a fly ash returning device, a tail heating surface, auxiliary equipment and the like. And the front end of the hearth is also provided with a feeding device for feeding coal into the hearth. Since the coal is fed in a large block structure, it is generally required to crush the coal. However, the conventional feeding device generally only pulverizes the coal once, and the pulverizing effect is poor, so that the coal is not fully combusted after entering the hearth, and the defects of the prior art can be demonstrated by the above patent.

We have therefore improved on this by proposing a circulating fluidized bed boiler feed apparatus.

Disclosure of utility model

The present utility model has been made in view of the above-mentioned problems occurring in the prior art.

Therefore, the utility model aims to provide a circulating fluidized bed boiler feeding device, which solves the problem that the existing massive coal feeding can cause insufficient combustion.

In order to achieve the above object, the present utility model provides the following technical solutions:

The utility model provides a circulating fluidized bed boiler feeder, includes the box, the front end of box is provided with the feed inlet, the rear end both sides of box are provided with the ejection of compact chamber respectively, be provided with a plurality of discharge gates on the ejection of compact chamber, be provided with movable chamber between the ejection of compact chamber of both sides, the spacing slip in movable chamber is provided with the second and beats the body, the front end top of box is provided with the slip cover shell, the vertical spacing slip in the slip cover shell is provided with first hammer, first hammer is used for beating the lump material intermittent type nature in the feed inlet vertically, the second is beaten the body and is used for cooperating first hammer level hammering, second is beaten the body straight line and is slided for the intercommunication mouth of ejection of compact chamber and feed inlet is plugged or opened, be provided with drive assembly on the box, drive assembly is used for controlling the motion that first hammer and second beaten the body.

As a preferable scheme of the circulating fluidized bed boiler feeding device, the upper end face of the second hammer body is provided with a plurality of second racks in linear equidistant mode, a first movable window is formed above the box body, the second racks are limited to move in the first movable window, and the second racks are respectively communicated with a boiler feeding port.

As a preferable scheme of the circulating fluidized bed boiler feeding device, the two sides of the sliding casing are respectively provided with the second movable windows, the two sides of the first hammer body are respectively provided with the first transmission shafts which are vertically and linearly distributed, and the first transmission shafts are limited to move in the corresponding second movable windows.

As a preferable scheme of the circulating fluidized bed boiler feeding device, the driving assembly comprises a first transmission shaft, a motor is arranged on the box body and used for driving the first transmission shaft to rotate, a first toothed roller is coaxially arranged on the first transmission shaft, and the first toothed roller is used for being meshed with a second rack.

As a preferable scheme of the circulating fluidized bed boiler feeding device, one side of the sliding sleeve is provided with a second transmission shaft, the other side of the sliding sleeve is provided with a third transmission shaft, the second transmission shaft and the third transmission shaft are respectively coaxially provided with a second toothed roller, the second toothed rollers are used for being meshed and matched with the corresponding first transmission shafts, and the second toothed rollers on the two sides are used for simultaneously driving the first hammer body to vertically move downwards or simultaneously driving the first hammer body to vertically move upwards.

As a preferable scheme of the circulating fluidized bed boiler feeding device, the two side walls of the sliding casing are respectively and movably provided with a fourth transmission shaft, the second transmission shaft is in transmission connection with the fourth transmission shaft through a synchronous belt, the end parts of the fourth transmission shaft and the third transmission shaft are respectively and coaxially provided with gears, the gears of the fourth transmission shaft are in meshed fit with the gears of the third transmission shaft, the end parts of the third transmission shaft are in transmission connection with the end parts of the first transmission shaft through the synchronous belt, and tooth-shaped structures are arranged at the inner sides of the synchronous belt.

As an optimal scheme of the circulating fluidized bed boiler feeding device, when the first hammer body vertically falls into the feeding hole, the second hammer body just contacts with the side wall of the first hammer body.

In the technical scheme, the utility model has the technical effects and advantages that:

1. according to the feeding device, after the coal is poured from the feeding hole, the first crushing is performed under the chiseling of the first hammer body, the second crushing is performed under the cooperation of the first hammer body and the second hammer body, and when the second hammer body is retracted and operated, the coal is fed from the discharging cavities at two sides of the box body, so that the feeding device with the uniform crushing function of the coal is realized.

2. According to the utility model, the two sides of the box body are provided with the discharging cavities, each discharging cavity is provided with a plurality of discharging holes, and when the discharging holes are communicated with the boiler, the boiler can be fed more uniformly, so that the sufficiency of coal combustion is further realized.

3. According to the utility model, the control of the vertical movement of the first hammer body and the control of the horizontal movement of the second hammer body can be realized through one motor, the crushing of the coal and the guiding-out of the coal can be realized, and the practicability of the coal feeding device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic view of the overall structure of a circulating fluidized bed boiler feeding device of the present utility model.

FIG. 2 is a schematic structural view of a circulating fluidized bed boiler feeding apparatus of the present utility model.

FIG. 3 is a schematic structural view of a circulating fluidized bed boiler feeding apparatus of the present utility model.

FIG. 4 is a schematic structural view of a circulating fluidized bed boiler feeding apparatus of the present utility model.

Reference numerals illustrate:

1. A case; 11, a feed inlet, 12, a discharge cavity, 13, a discharge port, 14, a movable cavity, 15, a sliding casing, 16, a first movable window, 17, a second movable window, 2, a first hammer body, 21, a first rack, 3, a second hammer body, 31, a second rack, 4, a driving component, 41, a first transmission shaft, 42, a first toothed roller, 43, a motor, 44, a second transmission shaft, 45, a third transmission shaft, 46, a second toothed roller, 47 and a fourth transmission shaft.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.

The embodiment of the utility model discloses a circulating fluidized bed boiler feeding device.

The utility model provides a circulating fluidized bed boiler feeding device as shown in fig. 1-4, which comprises a box body 1, wherein the front end of the box body 1 is provided with a feeding port 11, two sides of the rear end of the box body 1 are respectively provided with a discharging cavity 12, a plurality of discharging ports 13 are arranged on the discharging cavities 12, a movable cavity 14 is arranged between the discharging cavities 12 on two sides, a second hammer body 3 is arranged in the movable cavity 14 in a limiting sliding manner, the top of the front end of the box body 1 is provided with a sliding sleeve shell 15, a first hammer body 2 is arranged in the sliding sleeve 15 in a vertical limiting sliding manner, the first hammer body 2 is used for horizontally hammering lump materials in the feeding port 11, the second hammer body 3 is used for being matched with the first hammer body 2, the second hammer body 3 slides linearly and is used for blocking or opening a communication port between the discharging cavities 12 and the feeding port 11, a driving assembly 4 is arranged on the box body 1, the driving assembly 4 is used for controlling the movement of the first hammer body 2 and the second hammer body 3, when the first hammer body 2 falls into the feeding port 11 vertically, the second hammer body 3 and the first hammer body 2 are in a tilting support are arranged to be in contact with the bottom of the box body 1, so that the coal can be just tilted to be fed into the box body from the bottom of the feeding port 1.

During installation, the box body 1 is obliquely installed, so that coal can be obliquely discharged from the box body 1 to the discharging cavity 12, lump coal is poured from the feeding hole 11, the first hammer body 2 is vertically hammered to crush the quick coal, part of the coal moves to the rear end in the upward movement process of the first hammer body 2 and passes through the chiseling area of the first hammer body 2, when the first hammer body 2 continues to move downwards, the second hammer body 3 moves linearly to the feeding hole 11 to push part of the quick coal back to the feeding hole 11, after the first hammer body 2 completely falls down, the second hammer body 3 is propped against the box body 1, so that secondary chiseling is performed on the coal, insufficient chiseling is avoided, along with the upward movement of the first hammer body 2, the second hammer body 3 is retracted, the crushed coal is obliquely discharged into the discharging cavities 12 on two sides and falls into a boiler from the discharging hole 13.

In order to ensure the stability of the movement of the first hammer 2 and the second hammer 3, as shown in fig. 1-4, a plurality of second racks 31 are linearly and equidistantly arranged on the upper end surface of the second hammer 3, a first movable window 16 is arranged above the box 1, the second racks 31 are limited to move in the first movable window 16, second movable windows 17 are respectively arranged on two sides of the sliding sleeve 15, first transmission shafts 41 which are vertically and linearly distributed are respectively arranged on two sides of the first hammer 2, the first transmission shafts 41 are limited to move in the corresponding second movable windows 17, the driving assembly 4 comprises first transmission shafts 41, a motor 43 is arranged on the box 1, the motor 43 is used for driving the first transmission shafts 41 to rotate, a first toothed roller 42 is coaxially arranged on the first transmission shafts 41, the first toothed roller 42 is used for meshed with the second racks 31, and a toothed meshing structure is arranged on two sides of the first hammer 2, so that the stable vertical movement of the first hammer 2 is ensured, and a toothed meshing structure is arranged above the second hammer 3, so that the stable horizontal movement of the second hammer 3 is ensured.

In order to better operate the driving assembly 4, as shown in fig. 1-4, one side of the sliding casing 15 is provided with a second driving shaft 44, the other side is provided with a third driving shaft 45, the second driving shaft 44 and the third driving shaft 45 are respectively coaxially provided with a second toothed roller 46, the second toothed rollers 46 are used for being meshed and matched with the corresponding first driving shaft 41, the second toothed rollers 46 on two sides are used for simultaneously driving the first hammer body 2 to vertically move downwards or simultaneously driving the first hammer body 2 to vertically move upwards, two side walls of the sliding casing 15 are respectively movably provided with a fourth driving shaft 47, the second driving shaft 44 is connected with the fourth driving shaft 47 through a synchronous belt, the ends of the fourth driving shaft 47 and the third driving shaft 45 are respectively coaxially provided with gears, the gears of the fourth driving shaft 47 are meshed and matched with the gears of the third driving shaft 45, the end part of the third transmission shaft 45 is in transmission connection with the end part of the first transmission shaft 41 through a synchronous belt, the first transmission shaft 41 is driven to transmit through the motor 43, so that the third transmission shaft 45 is driven, the transmission directions of the first transmission shaft 41 and the third transmission shaft 45 are the same, the third transmission shaft 45 is meshed with the fourth transmission shaft 47, the rotation directions of the third transmission shaft 45 and the fourth transmission shaft 47 are opposite, the transmission directions of the fourth transmission shaft 47 and the second transmission shaft 44 are the same, the effect that one motor 43 drives the first transmission shaft 41, the second transmission shaft 44, the third transmission shaft 45 and the fourth transmission shaft 47 simultaneously is achieved, the whole feeding process of the first hammer body 2 and the second hammer body 3 can be controlled by one motor 43 through setting the moving distance of the first hammer body 2 and the second hammer body 3, and the energy conservation of the feeding device is achieved.

While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides a circulating fluidized bed boiler feeder, its characterized in that, including box (1), the front end of box (1) is provided with feed inlet (11), the rear end both sides of box (1) are provided with ejection of compact chamber (12) respectively, be provided with a plurality of discharge gates (13) on ejection of compact chamber (12), be provided with movable chamber (14) between ejection of compact chamber (12) of both sides, spacing slip is provided with second hammer (3) in movable chamber (14), the front end top of box (1) is provided with slip cover shell (15), vertical spacing slip is provided with first hammer (2) in slip cover shell (15), first hammer (2) are used for blocking up intermittent type nature vertical hammer in feed inlet (11), second hammer (3) are used for cooperating first hammer (2) level, second hammer (3) slide in a straight line for blocking or opening the intercommunication mouth of ejection of compact chamber (12) and feed inlet (11), be provided with first hammer (4) and second hammer (4) on box (1) drive assembly, drive assembly (4) are used for blocking up first hammer (2).

2. The circulating fluidized bed boiler feeding device according to claim 1, wherein a plurality of second racks (31) are linearly equidistantly arranged on the upper end face of the second hammer body (3), a first movable window (16) is formed above the box body (1), and the second racks (31) are limited to move in the first movable window (16).

3. The circulating fluidized bed boiler feeding device according to claim 2, wherein the two sides of the sliding casing (15) are respectively provided with a second movable window (17), the two sides of the first hammer body (2) are respectively provided with a first transmission shaft (41) which is vertically and linearly distributed, and the first transmission shafts (41) are limited to move in the corresponding second movable windows (17).

4. A circulating fluidized bed boiler feeding device according to claim 3, wherein the driving assembly (4) comprises a first transmission shaft (41), a motor (43) is mounted on the box body (1), the motor (43) is used for driving the first transmission shaft (41) to rotate, a first toothed roller (42) is coaxially mounted on the first transmission shaft (41), and the first toothed roller (42) is used for being meshed with the second rack (31).

5. The circulating fluidized bed boiler feeding device according to claim 4, wherein a second transmission shaft (44) is arranged on one side of the sliding casing (15), a third transmission shaft (45) is arranged on the other side of the sliding casing, second toothed rollers (46) are coaxially arranged on the second transmission shaft (44) and the third transmission shaft (45) respectively, the second toothed rollers (46) are used for being meshed with corresponding first transmission shafts (41), and the second toothed rollers (46) on two sides are used for simultaneously driving the first hammer body (2) to vertically move downwards or simultaneously driving the first hammer body (2) to vertically move upwards.

6. The circulating fluidized bed boiler feeding device according to claim 5, wherein a fourth transmission shaft (47) is movably mounted on two side walls of the sliding casing (15), the second transmission shaft (44) and the fourth transmission shaft (47) are in transmission connection through a synchronous belt, gears are coaxially mounted on end parts of the fourth transmission shaft (47) and the third transmission shaft (45) respectively, the gears of the fourth transmission shaft (47) are meshed with the gears of the third transmission shaft (45), and the end part of the third transmission shaft (45) is in transmission connection with the end part of the first transmission shaft (41) through the synchronous belt.

7. The circulating fluidized bed boiler feeding device according to claim 6, wherein the second hammer body (3) is just contacted with the side wall of the first hammer body (2) when the first hammer body (2) vertically falls into the feed port (11).