Circulating fluidized bed boiler exhaust device with dust purification function

Abstract

The utility model relates to a circulating fluidized bed boiler discharging device with dust purification function, including circulating fluidized bed boiler body, the circulating fluidized bed boiler body top is connected with the discharge pipe, the discharge pipe surface symmetry fixedly established with a set of support plate, a set of support plate surface symmetry is equipped with a set of electric push rod, a set of electric push rod movable end symmetry is connected with a set of limit support, the utility model discloses through the effective driving of electric push rod limit support moves up and down to drive the movable plate inside limit support to move up and down, and further drive the movable plate of limit support and a plurality of brush tufts to move up and down, reciprocating brush is convenient to the filter screen surface of impurity filter frame and is swept, reduces the possibility of jamming, and the dust and impurities that sweep down fall in the collection area formed between impurity filter frame and the fence plate, and on the basis of removing movable plate, the movable plate is pulled up, can effectively drive impurity filter frame whole removal discharge pipe inside, is convenient to the dust and impurities in collection area cleaning.

Description

Technical Field

[0001] This utility model relates to the field of circulating fluidized bed boiler technology, and in particular to a circulating fluidized bed boiler emission device with dust purification function. Background Technology

[0002] Circulating fluidized bed boilers represent the most industrialized clean coal combustion technology. They employ fluidized combustion and primarily consist of a combustion chamber and a circulating furnace. However, during combustion, circulating fluidized bed boilers generate a large amount of flue gas and dust, and the flue gas also contains residual odors and impurities. Direct emission of these gases can lead to environmental pollution.

[0003] Patent CN222256527U discloses an ultra-low emission circulating fluidized bed boiler, specifically relating to the field of circulating fluidized bed boiler technology. The boiler includes a furnace body with a support plate at the top and a treatment component on top of the support plate. The treatment component includes a treatment box located on top of the support plate, with a connecting pipe running through the bottom of the treatment box to the furnace body. An exhaust pipe is located at the top of the treatment box. Inside the treatment box are two placement frames, each topped with a frame. One frame contains a first filter plate, and the other contains an activated carbon adsorption plate. This invention treats the flue gas before emission, reducing environmental pollution and achieving low emissions.

[0004] However, the aforementioned ultra-low emission circulating fluidized bed boiler still has the following shortcomings:

[0005] Although the above-mentioned device can filter impurities inside the flue gas through the first filter plate, due to the upward movement of the flue gas, some of the impurities filtered out by the first filter plate will fall into the furnace body due to their own weight. This will affect the heat transfer efficiency and increase the ventilation resistance. In view of this, we propose a circulating fluidized bed boiler emission device with dust purification function. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a circulating fluidized bed boiler emission device with dust purification function. This solves the technical problem that although the current device can filter impurities inside the flue gas through the first filter plate, due to the upward movement of the flue gas, some of the impurities filtered by the first filter plate will fall into the furnace body due to their own weight, which will subsequently affect the heat transfer efficiency and increase the ventilation resistance.

[0007] To achieve the purpose of this utility model, the technical solution adopted by this utility model is as follows: a circulating fluidized bed boiler emission device with dust purification function is designed, including a circulating fluidized bed boiler body, an emission pipe connected to the top of the circulating fluidized bed boiler body, a set of support plates symmetrically fixed on the surface of the emission pipe, a set of electric push rods symmetrically arranged on the surface of the set of support plates, a set of limiting frames symmetrically connected to the movable end of the set of electric push rods, a set of auxiliary mechanisms symmetrically arranged on the surface of the limiting frames, a filtration mechanism arranged between the set of limiting frames, an activated carbon adsorption filter plate arranged on one side of the filtration mechanism, and the activated carbon adsorption filter plate being clamped inside the emission pipe.

[0008] Preferably, the auxiliary mechanism includes a cylindrical frame, which is fixed to the surface of the limiting frame. A T-shaped locking rod passes through the inside of the cylindrical frame. A pull ring is fixed to the outer end face of the T-shaped locking rod. A limiting ring plate is fixedly sleeved on the outside of the T-shaped locking rod. A spring is provided on one side of the limiting ring plate.

[0009] Preferably, the end of the T-shaped lever passes through the side of the limiting frame, and the T-shaped lever forms an elastic structure through the limiting ring plate, spring and cylinder.

[0010] Preferably, the filtration mechanism includes a movable plate that is engaged between a set of limiting frames. A set of connecting rods is symmetrically fixed at the bottom of the movable plate. A brush plate is fixedly connected to the bottom of the connecting rods. Several brush clusters are evenly distributed on one side of the brush plate. An impurity filter frame is provided outside the brush plate and the several brush clusters. A baffle plate is fixed on the surface of the impurity filter frame.

[0011] Preferably, the movable plate has a slot on its inner side that matches the inner end of the T-shaped lever. The movable plate is fixedly connected to the brush plate via a connecting rod. Several brush clusters on one side of the brush plate are in contact with the surface of the filter screen in the impurity filter rack.

[0012] Preferably, the brush plate and several brush clusters can be matched and engaged with the inner side of the top of the impurity filter frame, and the impurity filter frame and the baffle plate form a collection area.

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

[0014] 1. This utility model effectively drives the limiting frame to move up and down through an electric push rod, thereby driving the movable plate inside the limiting frame to move up and down, and in turn driving the brush plate and several brush clusters to move up and down, which facilitates the reciprocating brushing of the filter screen surface in the impurity filter frame, reducing the possibility of clogging. The dust and impurities swept off fall into the collection area formed between the impurity filter frame and the baffle plate. Subsequently, after removing the movable plate, pulling up the movable plate can effectively move the entire impurity filter frame out of the discharge pipe, making it easy to clean the dust and impurities in the collection area.

[0015] 2. In this utility model, by fastening a set of pull rings outward, the inner end of the T-shaped clamp is concealed inside the limiting frame. Then, the movable plate is placed between the limiting frames, and the pull rings are released. Due to the spring's rebound force, the inner end of the T-shaped clamp pops out and effectively engages with the inner side of the movable plate, thus quickly limiting the movable plate. When removing the movable plate later, simply fasten a set of pull rings outward again, which is quite convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the discharge pipe of this utility model;

[0018] Figure 3 This is a schematic diagram of the top cross-sectional structure of the impurity filter frame of this utility model;

[0019] Figure 4 This is a partial structural diagram of the present invention.

[0020] Figure 5 For the present utility model Figure 4 A partially enlarged structural diagram;

[0021] In the diagram: 1. Circulating fluidized bed boiler body; 2. Discharge pipe; 3. Support plate; 4. Electric push rod; 5. Limiting frame; 6. Auxiliary mechanism; 7. Filtration mechanism; 8. Activated carbon adsorption filter plate;

[0022] 601. Tube frame; 602. T-shaped locking rod; 603. Pull ring; 604. Limiting ring plate; 605. Spring;

[0023] 701. Movable plate; 702. Connecting rod; 703. Brush plate; 704. Brush cluster; 705. Impurity filter frame; 706. Enclosure plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0025] For circulating fluidized bed boiler emission devices with dust purification function, see [link / reference]. Figures 1 to 5 The system includes a circulating fluidized bed boiler body 1, a discharge pipe 2 connected to the top of the circulating fluidized bed boiler body 1, a set of support plates 3 symmetrically fixed on the surface of the discharge pipe 2, a set of electric push rods 4 symmetrically arranged on the surface of the set of support plates 3, a set of limiting frames 5 symmetrically connected to the movable end of the set of electric push rods 4, a set of auxiliary mechanisms 6 symmetrically arranged on the surface of the limiting frames 5, a filter mechanism 7 arranged between the set of limiting frames 5, an activated carbon adsorption filter plate 8 arranged on one side of the filter mechanism 7, and the activated carbon adsorption filter plate 8 being clamped inside the discharge pipe 2.

[0026] It is worth noting that the auxiliary mechanism 6 includes a cylindrical frame 601, which is fixed to the surface of the limiting frame 5. A T-shaped locking rod 602 passes through the inside of the cylindrical frame 601. A pull ring 603 is fixed to the outer end face of the T-shaped locking rod 602. A limiting ring plate 604 is fixedly sleeved on the outside of the T-shaped locking rod 602. A spring 605 is provided on one side of the limiting ring plate 604. The end of the T-shaped locking rod 602 passes through the side of the limiting frame 5. The T-shaped locking rod 602 and the cylindrical frame 601 form an elastic structure through the limiting ring plate 604 and the spring 605. In this invention, a set of pull rings 603 are fastened and pushed outward to conceal the inner end of the T-shaped locking rod 602 within the limiting frame 5. Then, the movable plate 701 is placed between the limiting frames 5, and the pull rings 603 are released. Due to the rebound force of the spring 605, the inner end of the T-shaped locking rod 602 pops out and effectively engages with the inner side of the movable plate 701, thereby quickly limiting the movable plate 701. When removing the movable plate 701, the pull rings 603 are fastened again and pushed outward, which is quite convenient.

[0027] It is worth noting that the filtration mechanism 7 includes a movable plate 701, which is engaged between a set of limiting frames 5. A set of connecting rods 702 are symmetrically fixed at the bottom of the movable plate 701. A brush plate 703 is fixedly connected to the bottom of the connecting rods 702. Several brush clusters 704 are evenly distributed on one side of the brush plate 703. An impurity filter frame 705 is provided outside the brush plate 703 and the several brush clusters 704. The movable plate 701 has a slot on its inner side that matches the inner end of the T-shaped locking rod 602. The movable plate 701 is fixedly connected to the brush plate 703 through the connecting rods 702. Several brush clusters 704 on one side of the brush plate 703 are in contact with the filter screen surface in the impurity filter frame 705. A baffle plate 706 is fixedly provided on the surface of the impurity filter frame 705. Furthermore, the brush plate 703 and the several brush clusters 704 can be matched and engaged on the inner top of the impurity filter frame 705. A collection area is formed between the impurity filter frame 705 and the baffle plate 706. This utility model effectively drives the limiting frame 5 to move up and down through the electric push rod 4, thereby driving the movable plate 701 inside the limiting frame 5 to move up and down, and in turn driving the brush plate 703 and several brush clusters 704 to move up and down, which facilitates the reciprocating sweeping of the filter screen surface in the impurity filter frame 705, reducing the possibility of clogging. The dust and impurities swept off fall into the collection area formed between the impurity filter frame 705 and the baffle plate 706. Subsequently, after removing the movable plate 701, pulling the movable plate 701 up can effectively move the impurity filter frame 705 out of the inside of the discharge pipe 2, which facilitates the cleaning of dust and impurities in the collection area.

[0028] Working principle: During operation, the flue gas generated by the circulating fluidized bed boiler body 1 is discharged through the discharge pipe 2. The flue gas first passes through the impurity filter frame 705. The filter screen in the impurity filter frame 705 intercepts dust and impurities. Simultaneously, the electric push rod 4 drives the limiting frame 5 to move up and down, thereby driving the movable plate 701 inside the limiting frame 5 to move up and down, which in turn drives the brush plate 703 and several brush clusters 704 to move up and down, facilitating reciprocating brushing of the filter screen surface in the impurity filter frame 705, reducing the possibility of clogging. The dust and impurities swept off fall onto the filter screen. Within the collection area formed between the impurity filter frame 705 and the baffle plate 706, the flue gas after impurity filtration passes through the activated carbon adsorption filter plate 8. The activated carbon adsorption filter plate 8 purifies the odor in the flue gas, reducing the pollution of the flue gas to the environment. Subsequently, a set of pull rings 603 are fastened and pushed outward, causing the inner end of the T-shaped lever 602 to be concealed inside the limiting frame 5, making it convenient to disassemble the movable plate 701. Then, the movable plate 701 is pulled up, which can move the impurity filter frame 705 out of the inside of the discharge pipe 2, making it convenient to clean the dust and impurities in the collection area.

Claims

1. A circulating fluidized bed boiler emission device with dust purification function, comprising a circulating fluidized bed boiler body (1), characterized in that, The top of the circulating fluidized bed boiler body (1) is connected to a discharge pipe (2). A set of support plates (3) are symmetrically fixed on the surface of the discharge pipe (2). A set of electric push rods (4) are symmetrically arranged on the surface of the set of support plates (3). A set of limiting frames (5) are symmetrically connected to the movable end of the set of electric push rods (4). A set of auxiliary mechanisms (6) are symmetrically arranged on the surface of the limiting frames (5). A filter mechanism (7) is arranged between the set of limiting frames (5). An activated carbon adsorption filter plate (8) is arranged on one side of the filter mechanism (7). The activated carbon adsorption filter plate (8) is clamped inside the discharge pipe (2).

2. The circulating fluidized bed boiler emission device with dust purification function as described in claim 1, characterized in that, The auxiliary mechanism (6) includes a cylindrical frame (601), which is fixed on the surface of the limiting frame (5). A T-shaped locking rod (602) runs through the inside of the cylindrical frame (601). A pull ring (603) is fixed on the outer end face of the T-shaped locking rod (602). A limiting ring plate (604) is fixedly sleeved on the outside of the T-shaped locking rod (602). A spring (605) is provided on one side of the limiting ring plate (604).

3. The circulating fluidized bed boiler emission device with dust purification function as described in claim 2, characterized in that, The end of the T-shaped lever (602) passes through the side of the limiting frame (5), and the T-shaped lever (602) forms an elastic structure with the cylinder frame (601) through the limiting ring plate (604), the spring (605).

4. The circulating fluidized bed boiler emission device with dust purification function as described in claim 2, characterized in that, The filtration mechanism (7) includes a movable plate (701), which is engaged between a set of limiting frames (5). A set of connecting rods (702) are symmetrically fixed at the bottom of the movable plate (701). A brush plate (703) is fixedly connected to the bottom of the connecting rods (702). Several brush clusters (704) are evenly distributed on one side of the brush plate (703). An impurity filter frame (705) is provided outside the brush plate (703) and the several brush clusters (704). A baffle plate (706) is fixedly provided on the surface of the impurity filter frame (705).

5. The circulating fluidized bed boiler emission device with dust purification function as described in claim 4, characterized in that, The movable plate (701) has a slot on its inner side that matches the inner end of the T-shaped lever (602). The movable plate (701) is fixedly connected to the brush plate (703) through the connecting rod (702). Several brush clusters (704) on one side of the brush plate (703) are in contact with the filter screen surface in the impurity filter frame (705).

6. The circulating fluidized bed boiler emission device with dust purification function as described in claim 4, characterized in that, The brush plate (703) and several brush clusters (704) can be matched and locked onto the inner side of the top of the impurity filter frame (705), and the impurity filter frame (705) and the baffle plate (706) form a collection area.

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