Circulating fluidized bed bed material addition mechanism

Abstract

The utility model discloses a circulating fluidized bed bed material adding mechanism belongs to fluidized bed gasification furnace technical field, including the shell, the inside bottom wall fixed connection of shell has a plurality of connecting pieces, the inside common sliding connection of every connecting piece has the ventilation board, the inside wall fixed connection of shell has the connecting plate, the outer surface inlay of connecting plate has a group of first bearing, every first bearing's inner ring all fixed connection has the cleaning tray, through the feed mechanism and send the bed material to the ventilation board, the vibration motor drives the ventilation board and carries out the vibration, and the vibration of ventilation board makes the bed material move, and through the first motor drives second gear, first gear and the cleaning tray rotation, and makes the brush on the cleaning tray clean the bed material, through the negative pressure mechanism and inhale the fine particle that sweeps from the bed material in the negative pressure mechanism, thereby has reduced the quantity of the fine particle that enters in the circulating fluidized bed, makes the fluidization more uniform, has reduced the situation of the blockage return material ware.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed gasifiers, specifically a circulating fluidized bed material addition mechanism. Background Technology

[0002] A circulating fluidized bed, also known as a fluidized bed furnace, is a device that heats the bed material and forms a bed layer through airflow. Material particles are fed into the bed and fluidized under conditions where the air velocity is greater than the free settling velocity of the particles, giving the particles certain apparent characteristics of a fluid. Before cold start-up, the circulating fluidized bed needs to be laid on an air distribution plate with bed material. The bed material is mainly used to establish the initial material circulation and support the fluidized bed structure, and is usually composed of inert materials such as quartz sand, ceramsite, or bottom slag.

[0003] Currently, when using shovels or feeders to feed bed material into a circulating fluidized bed, some small particles such as dust are fed into the interior along with the bed material. This causes fine particles to be easily carried to the dilute phase region by the airflow of the circulating fluidized bed, resulting in uneven fluidization. Furthermore, the accumulation of fine particles in the return feeder may cause blockage, further affecting the stability of material circulation. Therefore, those skilled in the art have provided a circulating fluidized bed material adding mechanism to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a circulating fluidized bed material addition mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A circulating fluidized bed material feeding mechanism includes a housing. Multiple connectors are fixedly connected to the inner bottom wall of the housing. A ventilation plate is slidably connected to the interior of each connector. A connecting plate is fixedly connected to the inner side wall of the housing. A set of first bearings is embedded in the outer surface of the connecting plate. A cleaning disc is fixedly connected to the inner ring of each first bearing. A first gear is fixedly connected to the outer surface of each cleaning disc. Each first gear meshes with an adjacent first gear. A first motor is fixedly connected to the inner bottom wall of the housing. A second gear is fixedly connected to the output end of the first motor and meshes with one of the first gears. A rotary joint is fixedly connected to the upper surface of each cleaning disc. A negative pressure mechanism is fixedly connected to the upper surface of the housing. A feeding mechanism is fixedly connected to the outer surface of the housing. A conveying mechanism is fixedly connected to the inner bottom wall of the housing. A vibration motor is fixedly connected to the outer surface of the ventilation plate.

[0006] As a further embodiment of this utility model: the negative pressure mechanism includes a negative pressure box, and a set of plastic partitions are fixedly connected to the upper surface of the outer shell.

[0007] As a further improvement of this utility model: a dustproof cloth is fixedly connected inside the negative pressure box, and a negative pressure fan is installed inside the negative pressure box.

[0008] As a further embodiment of this utility model: the feeding mechanism includes a feeding bin, and the interior of the feeding bin and the interior of the outer shell are slidably connected to a moving plate.

[0009] As a further embodiment of this utility model: the feeding mechanism includes a feeding tube, and two second bearings are embedded inside the feeding tube.

[0010] As a further embodiment of this utility model: the inner rings of the two second bearings are fixedly connected to a helical blade, and the inner bottom wall of the outer shell is fixedly connected to a second motor, the output end of the second motor being connected to the outer surface of the helical blade.

[0011] As a further improvement of this utility model, a feed funnel is fixedly connected to the outer surface of the feeding pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are: The circulating fluidized bed material feeding mechanism feeds the bed material onto the ventilation plate via a feeding mechanism. A vibration motor drives the ventilation plate to vibrate, causing the bed material to move. A first motor drives a second gear, a first gear, and a cleaning disc to rotate, causing the brushes on the cleaning disc to clean the bed material. A negative pressure mechanism sucks the fine particles swept off the bed material into the negative pressure mechanism, thereby reducing the number of fine particles entering the circulating fluidized bed, making the fluidization more uniform, and reducing the possibility of clogging the return feeder. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of a circulating fluidized bed material adding mechanism; Figure 2 A cross-sectional view of a circulating fluidized bed material feeding mechanism from a positive angle. Figure 3 A schematic diagram of the cross-sectional structure from a rear view in a circulating fluidized bed material adding mechanism; Figure 4 This is a top-view cross-sectional structural diagram of a circulating fluidized bed material adding mechanism.

[0014] In the diagram: 1. Outer shell; 2. Connector; 3. Ventilation plate; 4. Connecting plate; 5. First bearing; 6. Cleaning disc; 7. First gear; 8. First motor; 9. Second gear; 10. Rotary joint; 11. Negative pressure mechanism; 1101. Negative pressure box; 1102. Dustproof cloth; 1103. Negative pressure fan; 1104. Plastic partition; 12. Feeding mechanism; 1201. Feeding hopper; 1202. Moving plate; 13. Feeding mechanism; 1301. Feeding pipe; 1302. Second bearing; 1303. Spiral blade; 1304. Second motor; 1305. Feeding funnel; 14. Vibrating motor. Detailed Implementation

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Please see Figures 1-4In this embodiment of the present invention, a circulating fluidized bed material adding mechanism includes a housing 1. Multiple connecting members 2 are fixedly connected to the inner bottom wall of the housing 1. A ventilation plate 3 is slidably connected inside each connecting member 2. A connecting plate 4 is fixedly connected to the inner side wall of the housing 1. A set of first bearings 5 ​​are embedded in the outer surface of the connecting plate 4. A cleaning disc 6 is fixedly connected to the inner ring of each first bearing 5. A first gear 7 is fixedly connected to the outer surface of each cleaning disc 6. Each first gear 7 meshes with an adjacent first gear 7. A first motor 8 is fixedly connected to the inner bottom wall of the housing 1. A second gear 9 is fixedly connected to the output end of the first motor 8. The second gear 9 meshes with one of the first gears 7. A rotary joint 10 is fixedly connected to the upper surface of each cleaning disc 6. Each rotary joint 10 is connected to the outer surface of the housing 1. A negative... The pressure mechanism 11, the outer surface of the outer shell 1 is fixedly connected to the feeding mechanism 12, the inner bottom wall of the outer shell 1 is fixedly connected to the feeding mechanism 13, the outer surface of the ventilation plate 3 is fixedly connected to the vibration motor 14, the diameter of the holes on the ventilation plate 3 is smaller than the diameter of the bed material, and the outer surface of each cleaning disc 6 is connected to brush bristles. The feeding mechanism 12 feeds the bed material of appropriate size into the ventilation plate 3. The vibration motor 14 drives the ventilation plate 3 to vibrate and moves the bed material. The first motor 8 drives the second gear 9 to rotate, and the second gear 9 drives the first gear 7 and the cleaning disc 6 to rotate, so that the brush bristles on the cleaning disc 6 clean the bed material. The cleaned fine particles are sucked into the negative pressure mechanism 11 through the negative pressure mechanism 11, thereby reducing the number of fine particles entering the circulating fluidized bed and making the fluidization more uniform. Finally, the feeding mechanism 13 feeds the cleaned bed material into the circulating fluidized bed.

[0018] The negative pressure mechanism 11 includes a negative pressure box 1101. A set of plastic partitions 1104 are fixedly connected to the upper surface of the outer shell 1. A dustproof cloth 1102 is fixedly connected inside the negative pressure box 1101. A negative pressure fan 1103 is installed inside the negative pressure box 1101. The feeding mechanism 12 includes a feeding bin 1201. A moving plate 1202 is slidably connected to the inside of the feeding bin 1201 and the inside of the outer shell 1. Negative pressure is generated by the rotation of the blades of the negative pressure fan 1103, thereby sucking fine particles into the negative pressure box 1101 and blocking them with the dustproof cloth 1102. By setting the plastic partitions 1104, backflow of fine particles can be prevented.

[0019] The feeding mechanism 13 includes a feeding pipe 1301, inside which are embedded two second bearings 1302. The inner rings of the two second bearings 1302 are fixedly connected to a spiral blade 1303. A second motor 1304 is fixedly connected to the inner bottom wall of the outer shell 1. The output end of the second motor 1304 is connected to the outer surface of the spiral blade 1303. A feed funnel 1305 is fixedly connected to the outer surface of the feeding pipe 1301. The cleaned bed material is collected into the feeding pipe 1301 through the feed funnel 1305. The spiral blade 1303 is driven to rotate by the second motor 1304, so that the spiral blade 1303 sends the cleaned bed material into the circulating fluidized bed.

[0020] The working principle of this utility model is as follows: When using this device, one end of the feeding pipe 1301 is moved into the circulating fluidized bed, and the bed material with suitable particle size after screening is poured into the feed hopper 1201. The vibration motor 14 is turned on to drive the ventilation plate 3 to vibrate. The moving plate 1202 is moved to make the bed material flow to the ventilation plate 3. The first motor 8 is turned on to drive the second gear 9 to rotate. The second gear 9 drives the first gear 7 and the cleaning disc 6 to rotate, so that the bristles on the cleaning disc 6 clean the bed material. The negative pressure fan 1103 is turned on to suck the dust swept off the bed material into the negative pressure box 1101. The cleaned bed material flows to the feed funnel 1305. The second motor 1304 is turned on to drive the spiral blade 1303 to rotate, and the aggregate is sent to the other end of the feeding pipe 1301 and enters the circulating fluidized bed.

[0021] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A circulating fluidized bed material feeding mechanism, comprising a housing (1), characterized in that, The inner bottom wall of the outer shell (1) is fixedly connected to multiple connectors (2), and each connector (2) is slidably connected to a ventilation plate (3). The inner side wall of the outer shell (1) is fixedly connected to a connecting plate (4), and a set of first bearings (5) is inlaid on the outer surface of the connecting plate (4). Each first bearing (5) has a cleaning disc (6) fixedly connected to its inner ring, and each cleaning disc (6) has a first gear (7) fixedly connected to its outer surface. Each first gear (7) meshes with the adjacent first gear (7). The inner bottom wall of the outer shell (1) A first motor (8) is fixedly connected, and a second gear (9) is fixedly connected to the output end of the first motor (8). The second gear (9) meshes with one of the first gears (7). A rotary joint (10) is fixedly connected to the upper surface of each of the cleaning discs (6). A negative pressure mechanism (11) is fixedly connected to the upper surface of the outer shell (1). A feeding mechanism (12) is fixedly connected to the outer surface of the outer shell (1). A feeding mechanism (13) is fixedly connected to the inner bottom wall of the outer shell (1). A vibration motor (14) is fixedly connected to the outer surface of the ventilation plate (3).

2. The circulating fluidized bed material adding mechanism according to claim 1, characterized in that, The negative pressure mechanism (11) includes a negative pressure box (1101), and a set of plastic diaphragms (1104) are fixedly connected to the upper surface of the outer shell (1).

3. The circulating fluidized bed material adding mechanism according to claim 2, characterized in that, The negative pressure box (1101) is fixedly connected to a dustproof cloth (1102), and a negative pressure fan (1103) is installed inside the negative pressure box (1101).

4. The circulating fluidized bed material adding mechanism according to claim 1, characterized in that, The feeding mechanism (12) includes a feeding bin (1201), and a moving plate (1202) is slidably connected to the inside of the feeding bin (1201) and the inside of the outer shell (1).

5. The circulating fluidized bed material adding mechanism according to claim 1, characterized in that, The feeding mechanism (13) includes a feeding tube (1301), and two second bearings (1302) are embedded inside the feeding tube (1301).

6. The circulating fluidized bed material adding mechanism according to claim 5, characterized in that, The inner rings of the two second bearings (1302) are fixedly connected to a helical blade (1303), and the inner bottom wall of the outer shell (1) is fixedly connected to a second motor (1304). The output end of the second motor (1304) is connected to the outer surface of the helical blade (1303).

7. The circulating fluidized bed material adding mechanism according to claim 5, characterized in that, The outer surface of the feeding pipe (1301) is fixedly connected to the feeding funnel (1305).

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