Boiler deslagging and dedusting device for power plant

Abstract

The utility model discloses a boiler deslagging and dedusting device for a power plant, which comprises a conveyor belt and a deslagging port, the deslagging port is arranged above the position of the conveyor belt, a storage box is arranged in the conveying direction of the conveyor belt, a baffle is rotatably connected to the storage box, the baffle is positioned above the position of the conveyor belt, and the deslagging port is arranged above the position of the conveyor belt. The storage box is fixedly connected with an air suction pipeline, the air suction pipeline is connected with external air extraction equipment, a sealing cover is arranged outside the conveying belt in a surrounding mode, and the slag discharging opening is communicated with the storage box through the sealing cover; according to the device, residues discharged by the boiler can be rapidly treated, fly ash generated by carrying can be effectively isolated and collected, the fly ash is prevented from being diffused to the external environment, the working environment is improved, meanwhile, waste heat of the residues can be recycled, the problem that heat exchange cannot be effectively conducted on the internal residues due to residue accumulation is solved, and the device is suitable for popularization and application. And the heat loss is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler slag discharge and dust removal for power plants, in particular to a boiler slag discharge and dust removal device for power plants. Background Art

[0002] Power plant boilers are core equipment for coal-fired, gas-fired, or biomass-fired power generation. Their primary function is to generate high-temperature, high-pressure steam by burning fuel to drive the steam turbine for power generation. Coal-fired boilers produce a large amount of ash during operation. Boiler slag removal directly affects the power plant's operating efficiency, environmental performance, and equipment life. Therefore, efficient, low-pollution slag removal and dust removal technology is crucial. However, existing power plant boiler slag removal and dust removal technologies still have certain shortcomings:

[0003] In the existing boiler slag removal process used in power plants, most of the fly ash produced by boiler slag cannot be effectively isolated and collected, causing it to spread into the external environment, affecting the working environment. At the same time, the slag still has a certain amount of waste heat that can be utilized. The problem of slag accumulation causing the internal slag to be unable to effectively exchange heat needs to be solved to reduce heat loss.

[0004] Therefore, it is necessary to design a boiler slag removal and dust removal device for power plants. Utility Model Content

[0005] The purpose of this utility model is to provide a boiler slag dust removal device for power plants, which is used to solve the problem that in the existing boiler slag dust removal process for power plants, most of the residues discharged from the boiler cannot be effectively isolated and collected to carry out fly ash, which will diffuse into the external environment and affect the working environment. At the same time, there is still a certain amount of waste heat in the residue that can be utilized, and it is necessary to solve the problem that the internal residue cannot effectively exchange heat due to the accumulation of residue to reduce heat loss.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a boiler slag discharge and dust removal device for a power plant, comprising a conveyor belt and a slag discharge port, wherein the slag discharge port is arranged above the position of the conveyor belt, and a storage box is arranged in the transmission direction of the conveyor belt. The slag discharge port discharges the boiler slag onto the conveyor belt, and the conveyor belt transports the slag to the storage box;

[0007] The storage box is rotatably connected to a baffle, which is located above the conveyor belt. The storage box is fixedly connected to an air intake pipe, which is connected to an external air extraction device. When the residue reaches the baffle, it can push the baffle away and fall smoothly into the storage box. When there is no residue to be transported, the baffle naturally falls back to block the fly ash in the storage box. At the same time, when the residue falls into the storage box and raises fly ash, the fly ash is sucked out through the air intake pipe by using an industrial induced draft fan as an external air extraction device.

[0008] A closed cover is provided around the outside of the conveyor belt, and the slag discharge port and the storage box are connected through the closed cover, and the closed cover reduces the diffusion of fly ash to the external environment.

[0009] As a further technical solution of the present invention, an air duct is fixedly connected to the closed cover, an air outlet is provided between the closed cover and the conveyor belt, and the air duct passes through the closed cover and is fixedly connected to the air outlet;

[0010] The air duct is connected to the air outlet, and the air duct is connected to an external air supply device, using a high-pressure centrifugal fan as the external air supply device to supply air to the closed cover through the air duct and the air outlet;

[0011] The air duct and the air outlet are arranged near the storage box. The air direction output by the air outlet is opposite to the transmission direction of the conveyor belt. The air supplied by the air outlet cools the residue on the conveyor belt, and the waste heat released by the residue is carried by the wind.

[0012] As a further technical solution of the present invention, a recovery pipe is fixedly connected to the closed cover, and the recovery pipe is communicated with the closed cover;

[0013] The recovery pipe is arranged near the slag discharge port, and the recovery pipe is connected to an external exhaust device. A filtering device is provided in the recovery pipe. The hot air with waste heat is sucked away through the recovery pipe by an industrial induced draft fan as an external exhaust device, and discharged into the furnace for heat recovery. A filter plate is used as a filtering device to block the fly ash carried in the hot air, so that it falls on the conveyor belt and is finally transported along with the residue.

[0014] As a further technical solution of the utility model, it also includes an auxiliary mechanism provided on the closed cover, the auxiliary mechanism including a mounting frame, a motor, a rotating shaft, a connecting plate and a stirring drum;

[0015] The mounting frame and the connecting plate are respectively fixedly connected to both sides of the closed cover, and the mounting frame is fixedly connected to a motor, and the motor drives a rotating shaft, and the rotating shaft passes through the closed cover and is rotatably connected to the connecting plate, and the rotating shaft can be driven to rotate by the motor;

[0016] A stirring drum is fixedly connected to the rotating shaft, and the stirring drum is located between the conveyor belt and the closed cover. The rotation of the rotating shaft synchronously drives the stirring drum to rotate. The rotation of the stirring drum disperses the residue accumulated too high on the conveyor belt, preventing the internal residue from being unable to contact the wind, so that it can fully exchange heat with the transported wind.

[0017] As a further technical solution of the present invention, the stirring drum includes a fixing ring, a connecting piece, a mounting ring and a stirring crossbar;

[0018] The fixing rings are arranged on the rotating shaft in two groups, two groups of mounting rings are arranged on the outer side of the rotating shaft, and a connecting piece is fixedly connected between the fixing rings and the mounting rings;

[0019] A plurality of stirring cross bars are fixedly connected between the mounting rings.

[0020] As a further technical solution of the present invention, a sealing ring is provided between the rotating shaft and the closing cover. The rotating shaft and the sealing ring are in rotational cooperation, and the sealing ring is used to reduce the leakage of hot air.

[0021] As a further technical solution of the present invention, a slag cleaning port is provided on the storage box, and the residue in the storage box is cleaned by opening the slag cleaning port.

[0022] The utility model provides a boiler slag removal and dust removal device for power plants, which has the following advantages:

[0023] The residue is transported to the storage box by a conveyor belt. When the residue reaches the baffle, it can push the baffle open and fall smoothly into the storage box. When there is no residue to be transported, the baffle will naturally fall back to block the fly ash in the storage box. At the same time, when the residue falls into the storage box and raises fly ash, the industrial induced draft fan is used as an external exhaust device to suck the fly ash out through the suction pipe. During the transportation of the residue, the closed cover reduces the spread of fly ash to the external environment.

[0024] A high-pressure centrifugal fan is used as an external air supply device to supply air to the closed cover through the air supply duct and air outlet to cool the residue on the conveyor belt. The waste heat released by the residue is carried by the wind. The hot air with waste heat is sucked away through the recovery pipe by an industrial induced draft fan as an external exhaust device and discharged into the furnace for heat recovery. A filter plate is used as a filtering device to block the fly ash carried in the hot air, causing it to fall onto the conveyor belt and eventually be transported along with the residue.

[0025] The motor can drive the rotating shaft to rotate, and the rotation of the rotating shaft can synchronously drive the stirring drum to rotate. The rotation of the stirring drum can disperse the residue accumulated too high on the conveyor belt, so as to prevent the internal residue from being unable to contact the wind and enable it to fully exchange heat with the conveying wind.

[0026] It can quickly process the residue discharged from the boiler and effectively isolate and collect the fly ash it carries to prevent it from spreading to the external environment, thereby improving the working environment. At the same time, it can recycle the waste heat of the residue and avoid the problem of internal residue being unable to effectively exchange heat due to residue accumulation, thereby reducing heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is an exploded diagram of part of the structure of the present invention;

[0030] Figure 3 for Figure 2 A magnified view of the local structure of area A.

[0031] In the figure: 1. Conveyor belt; 2. Slag discharge port;

[0032] 3. Storage box; 31. Baffle; 32. Intake pipe;

[0033] 4. Enclosure cover; 41. Air duct; 42. Air outlet; 43. Recovery duct; 44. Auxiliary mechanism; 441. Mounting frame; 442. Motor; 443. Rotating shaft; 444. Connecting plate; 445. Mixing drum; 4451. Fixing ring; 4452. Connecting piece; 4453. Mounting ring; 4454. Mixing crossbar;

[0034] 5. Sealing ring; 6. Slag cleaning port. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] Please see the attached Figure 1 -Attached Figure 3 The utility model provides an embodiment: a boiler slag discharge and dust removal device for a power plant, comprising a conveyor belt 1 and a slag discharge port 2, the slag discharge port 2 being arranged above the position of the conveyor belt 1, a storage box 3 being arranged in the transmission direction of the conveyor belt 1, the slag discharge port 2 discharges the boiler slag onto the conveyor belt 1, and the conveyor belt 1 transports the slag to the storage box 3, the storage box 3 is provided with a slag cleaning port 6, and the slag in the storage box 3 is cleaned by opening the slag cleaning port 6;

[0038] A baffle 31 is rotatably connected to the storage box 3. The baffle 31 is located above the conveyor belt 1. An air suction pipe 32 is fixedly connected to the storage box 3. The air suction pipe 32 is connected to an external air extraction device. When the residue reaches the baffle 31, it can push the baffle 31 away and fall smoothly into the storage box 3. When there is no residue to be transported, the baffle 31 naturally falls back to block the fly ash in the storage box 3. At the same time, when the residue falls into the storage box 3 and raises fly ash, the industrial induced draft fan is used as an external air extraction device to suck the fly ash out through the air suction pipe 32.

[0039] A closed cover 4 is provided around the outer periphery of the conveyor belt 1. The slag discharge port 2 and the storage box 3 are connected through the closed cover 4. The closed cover 4 reduces the diffusion of fly ash to the external environment. An air duct 41 is fixedly connected to the closed cover 4. An air outlet 42 is provided between the closed cover 4 and the conveyor belt 1. The air duct 41 passes through the closed cover 4 and is fixedly connected to the air outlet 42. The air duct 41 is connected to the air outlet 42. The air duct 41 is connected to an external air supply device. A high-pressure centrifugal fan is used as the external air supply device. Air is supplied to the closed cover 4 through the air duct 41 and the air outlet 42. The air duct 41 and the air outlet 42 are arranged near the storage box 3. The wind direction output by the air outlet 42 is opposite to the transmission direction of the conveyor belt 1 The air outlet 42 supplies air to cool the residue on the conveyor belt 1, and the waste heat released by the residue is carried by the wind; a recovery pipe 43 is fixedly connected to the closed cover 4, and the recovery pipe 43 is connected to the closed cover 4. The recovery pipe 43 is arranged near the slag discharge port 2, and the recovery pipe 43 is connected to the external exhaust equipment. A filtering device is provided in the recovery pipe 43, and the hot air with waste heat is sucked away through the recovery pipe 43 by the industrial induced draft fan as the external exhaust equipment, and discharged into the furnace for heat recovery and utilization, and a filter plate is used as a filtering device to block the fly ash carried in the hot air, so that it falls on the conveyor belt 1 and is finally transported with the residue; a dust removal device is provided between the intake pipe 32 and the external exhaust equipment.

[0040] The auxiliary mechanism 44 is also included in the closed cover 4. The auxiliary mechanism 44 includes a mounting frame 441, a motor 442, a rotating shaft 443, a connecting plate 444 and a stirring roller 445. The mounting frame 441 and the connecting plate 444 are respectively fixedly connected to both sides of the closed cover 4. The mounting frame 441 is fixedly connected to the motor 442. The motor 442 drives the rotating shaft 443. The rotating shaft 443 passes through the closed cover 4 and is rotatably connected to the connecting plate 444. The rotating shaft 443 can be driven to rotate by the motor 442. The stirring roller 445 is fixedly connected to the rotating shaft 443. The stirring roller 445 is located between the conveyor belt 1 and the closed cover 4. The rotation of the rotating shaft 443 synchronously drives the stirring roller 445 to rotate. The rotation of 445 disperses the residue that is accumulated too high on the conveyor belt 1, preventing the internal residue from being unable to contact the wind, so that it can fully exchange heat with the transported wind. The stirring drum 445 includes a fixed ring 4451, a connecting piece 4452, a mounting ring 4453 and a stirring cross bar 4454. The fixed ring 4451 is arranged in two groups on the rotating shaft 443, and two groups of mounting rings 4453 are arranged on the outside of the rotating shaft 443. A connecting piece 4452 is fixedly connected between the fixed ring 4451 and the mounting ring 4453, and several stirring cross bars 4454 are fixedly connected between the mounting rings 4453. A sealing ring 5 is provided between the rotating shaft 443 and the closing cover 4. The rotating shaft 443 and the sealing ring 5 are in rotational cooperation. The sealing ring 5 is used to reduce the leakage of hot air.

[0041] Specifically, when in use, the slag discharge port 2 first discharges the boiler residue onto the conveyor belt 1, and the conveyor belt 1 transports the residue to the storage box 3. When the residue reaches the baffle 31, it can push the baffle 31 open and smoothly fall into the storage box 3. When there is no residue to be transported, the baffle 31 naturally falls back to block the fly ash in the storage box 3. At the same time, when the residue falls into the storage box 3 and raises fly ash, the industrial induced draft fan is used as an external exhaust device to suck the fly ash out through the suction pipe 32. In the process of residue transportation, the closed cover 4 reduces the spread of fly ash to the external environment.

[0042] A high-pressure centrifugal fan is used as an external air supply device to supply air to the closed cover 4 through the air supply duct 41 and the air outlet 42 to cool the residue on the conveyor belt 1. The waste heat released by the residue is carried by the wind. The hot air with waste heat is sucked away through the recovery duct 43 by an industrial induced draft fan as an external exhaust device and discharged into the furnace for heat recovery. A filter plate is used as a filtering device to block the fly ash carried in the hot air, causing it to fall onto the conveyor belt 1 and eventually be transported along with the residue.

[0043] The motor 442 can drive the rotating shaft 443 to rotate, and the rotation of the rotating shaft 443 can synchronously drive the stirring drum 445 to rotate. The rotation of the stirring drum 445 can disperse the residue accumulated too high on the conveyor belt 1, so as to prevent the residue inside from being unable to contact the wind, so that it can fully exchange heat with the conveying wind.

[0044] It can quickly process the residue discharged from the boiler and effectively isolate and collect the fly ash it carries to prevent it from spreading to the external environment, thereby improving the working environment. At the same time, it can recycle the waste heat of the residue and avoid the problem of internal residue being unable to effectively exchange heat due to residue accumulation, thereby reducing heat loss.

[0045] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A boiler slag discharge and dust removal device for a power plant, comprising a conveyor belt (1) and a slag discharge port (2), characterized in that: The slag discharge port (2) is arranged above the position of the conveyor belt (1), and a storage box (3) is arranged in the transmission direction of the conveyor belt (1); The storage box (3) is rotatably connected to a baffle (31), the baffle (31) is located above the position of the conveyor belt (1), and the storage box (3) is fixedly connected to an air suction pipe (32), the air suction pipe (32) is connected to an external air extraction device; A closed cover (4) is provided around the outside of the conveyor belt (1), and the slag discharge port (2) and the storage box (3) are connected via the closed cover (4).

2. The boiler slag removal and dust removal device for a power plant according to claim 1, characterized in that: An air delivery duct (41) is fixedly connected to the enclosed cover (4), an air outlet (42) is provided between the enclosed cover (4) and the conveyor belt (1), and the air delivery duct (41) passes through the enclosed cover (4) and is fixedly connected to the air outlet (42); The air delivery duct (41) is connected to the air outlet (42), and the air delivery duct (41) is connected to an external air delivery device; The air delivery duct (41) and the air outlet (42) are arranged close to the storage box (3), and the air output direction of the air outlet (42) is opposite to the transmission direction of the conveyor belt (1).

3. The boiler slag removal and dust removal device for a power plant according to claim 1, characterized in that: A dust removal device is provided between the air suction pipe (32) and the external air extraction equipment.

4. The boiler slag removal and dust removal device for a power plant according to claim 1, characterized in that: A recovery pipe (43) is fixedly connected to the sealing cover (4), and the recovery pipe (43) is in communication with the sealing cover (4); The recovery pipe (43) is arranged near the slag discharge port (2), the recovery pipe (43) is connected to an external air extraction device, and a filtering device is provided in the recovery pipe (43).

5. The boiler slag removal and dust removal device for a power plant according to claim 1, characterized in that: Also included is an auxiliary mechanism (44) disposed on the closure cover (4), the auxiliary mechanism (44) comprising a mounting frame (441), a motor (442), a rotating shaft (443), a connecting plate (444), and a stirring roller (445); The mounting frame (441) and the connecting plate (444) are respectively fixedly connected to both sides of the closed cover (4); a motor (442) is fixedly connected to the mounting frame (441); the motor (442) drives a rotating shaft (443); the rotating shaft (443) passes through the closed cover (4) and is rotatably connected to the connecting plate (444); A stirring roller (445) is fixedly connected to the rotating shaft (443), and the stirring roller (445) is located between the conveyor belt (1) and the closing cover (4).

6. The boiler slag removal and dust removal device for a power plant according to claim 5, characterized in that: The stirring roller (445) comprises a fixing ring (4451), a connecting piece (4452), a mounting ring (4453) and a stirring crossbar (4454); The fixing rings (4451) are arranged on the rotating shaft (443) in two groups, two groups of mounting rings (4453) are arranged outside the rotating shaft (443), and a connecting piece (4452) is fixedly connected between the fixing rings (4451) and the mounting rings (4453); A plurality of stirring cross bars (4454) are fixedly connected between the mounting rings (4453).

7. The boiler slag removal and dust removal device for a power plant according to claim 5, characterized in that: A sealing ring (5) is provided between the rotating shaft (443) and the sealing cover (4), and the rotating shaft (443) and the sealing ring (5) are in rotational engagement.

8. The boiler slag removal and dust removal device for a power plant according to claim 1, characterized in that: The storage box (3) is provided with a slag removal port (6).

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