Unloading device for fly ash warehouse of power plant

Abstract

The invention relates to the technical field of coal ash warehouse unloading, and discloses a power plant coal ash warehouse unloading device which comprises an ash storage warehouse, the top face of the ash storage warehouse communicates with and is fixedly provided with a feeding pipe, the inner bottom face of the ash storage warehouse is provided with a plurality of unloading bins, and the plurality of unloading bins equally divide the space of the inner bottom face of the ash storage warehouse. A material vibrating assembly used for assisting in discharging is arranged in the ash storage warehouse, the material vibrating assembly comprises two fixing frames fixed in the ash storage warehouse, a plurality of sliding grooves are formed in the bottom faces of the fixing frames, and a plurality of vibrating rods are arranged in the sliding grooves in a sliding mode. A plurality of vibration rods are arranged in the ash storage warehouse, the vibration rods are inserted into the coal ash layer and correspond to the discharging bin in position, and during discharging, through vibration of the vibration rods, airflow released by the bottoms of the vibration rods is blown into a coal seam, so that the bottom coal seam is diffused and scattered, and the fluidity of coal ash is improved; and the discharging speed of the coal ash is effectively increased.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash silo unloading, in particular to a fly ash silo unloading device for a power plant. Background Art

[0002] At present, fly ash is widely used in the industrial field. Cement, bricks, concrete and other building materials as well as the power generation industry all require a large amount of fly ash. After a long period of storage, the fly ash has a "self-compacting" phenomenon, which leads to closer contact between the fly ashes and poor fluidity. In severe cases, it may even form "caking" and the discharge port will lock itself, affecting the unloading of fly ash. In order to ensure the stable unloading of fly ash, a fly ash storage unloading device is required.

[0003] An existing fly ash storage and unloading system (Announcement No.: CN109455536B) has at least the following disadvantages: the device increases the fluidity of the fly ash by arranging an elastic bottom plate and a metal hose at the bottom of the coal bin during unloading by driving the elastic bottom plate to vibrate and blowing air through the metal hose. However, since the elastic bottom plate is located at the very bottom of the coal seam and is directly subjected to the pressure of the upper layer of fly ash, the load pressure of the elastic bottom plate is large, and the vibration is greatly constrained, resulting in poor vibration effect on the fly ash. Moreover, only the fly ash at the bottom layer can be vibrated, and the upper layer of fly ash will be gradually weakened, which cannot effectively solve the self-compaction problem of the fly ash. For this reason, the present invention is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a fly ash storage unloading device for a power plant.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fly ash bin unloading device for a power plant comprises an ash storage bin, wherein the top surface of the ash storage bin is connected to and fixed with a feed pipe, a plurality of unloading bins are provided on the inner bottom surface of the ash storage bin, and the plurality of unloading bins evenly divide the space on the inner bottom surface of the ash storage bin, a vibration assembly for assisting unloading is provided inside the ash storage bin, and the vibration assembly comprises two fixed frames fixed inside the ash storage bin, a plurality of sliding grooves are provided on the bottom surface of the fixed frames, a plurality of vibration rods are slidingly provided inside the sliding grooves, springs are fixed between both sides of the vibration rods and both sides of the inner part of the sliding grooves, an air distribution pipe is fixed inside the vibration rod, and the bottom end of the air distribution pipe extends to the bottom opening of the vibration rod.

[0007] As a further solution of the present invention, among the several vibration rods, a vibration motor is fixed between every two adjacent vibration rods, two first Roots blowers are fixed on one side of the ash storage bin, the air outlet of the first Roots blower is connected to the main through pipe, and the air distribution pipe is connected and fixed to the outer wall of the main through pipe.

[0008] As a further solution of the present invention, a fine mesh is fixed to the bottom opening of the vibration rod.

[0009] As a further solution of the present invention, two discharge pipes are provided below the ash storage bin, a discharger is fixed between the bottom of the discharge bin and the outer wall of the discharge pipe, and a second Roots blower is installed at one end of the discharge pipe.

[0010] As a further solution of the present invention, a bucket elevator is provided on one side of the ash storage bin, a discharge pipe is connected to the feed end of the bucket elevator, a bulk bin is provided on one side of the bucket elevator, and a support frame is fixed to the outer wall of the bulk bin.

[0011] As a further solution of the present invention, the discharge end of the bucket elevator is connected to an inclined pipe, the inclined pipe is connected to the feed end of the top surface of the bulk storage, and a dry ash bulker is installed on the bottom surface of the bulk storage.

[0012] As a further solution of the present invention, a first bag dust collector is installed on the top surface of the ash storage bin, and a first air inlet pipe is connected and fixed between the air inlet of the first bag dust collector and the top surface of the ash storage bin, and the ash discharge hopper of the first bag dust collector is also connected and fixed to the top surface of the ash storage bin. A second bag dust collector is provided on the other side of the bucket elevator, and a second air inlet pipe is connected and fixed between the air inlet of the second bag dust collector and the feed end of the bucket elevator, and the ash discharge hopper of the second bag dust collector is also connected and fixed to the feed end of the bucket elevator. A third bag dust collector is fixed on the top surface of the bulk bin, and a third air inlet pipe is connected and fixed between the air inlet of the third bag dust collector and the top surface of the bulk bin, and the ash discharge hopper of the third bag dust collector is also connected and fixed to the top surface of the bulk bin.

[0013] As a further solution of the present invention, an umbrella cover is fixed to the top surface of the fixing frame, and a protective compartment is fixed to the outer wall of the vibration motor.

[0014] As a further solution of the present invention, two support rods are fixed inside the sliding groove, two support holes are opened on one side of the vibration rod, the support rods and the support holes are slidingly arranged inside, and the spring is movably sleeved on the outer wall of the support rod.

[0015] As a further solution of the present invention, support rollers are fixed to the inner top surface and bottom surface of the support hole, and the two support rollers are respectively in contact with the top surface and bottom surface of the support rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] A number of vibration rods are set inside the ash storage bin, so that the vibration rods are inserted into the coal ash layer, and the position of the vibration rods corresponds to the unloading bin. During unloading, the vibration of the vibration rods and the release of air flow from the bottom of the vibration rods into the coal seam cause the bottom coal seam to diffuse and disperse, thereby increasing the fluidity of the coal ash and effectively accelerating the unloading speed of the coal ash.

[0018] By inserting the vibration rod into the coal ash, the vibration rod can effectively vibrate the upper, middle and lower layers of the coal seam, increase the overall fluidity of the coal seam, and effectively reduce the pressure of the coal ash on the vibration rod, reduce the restraint on the vibration rod, and increase the vibration effect.

[0019] By evenly distributing several conical unloading bins on the bottom of the ash storage bin, the coal ash at the bottom of the ash storage bin is introduced into several unloading bins respectively, effectively balancing the pressure of the coal ash at the bottom of the ash storage bin, and preventing the pressure of all the coal ash above the single conical lower bin from gathering and causing agglomeration, which increases the difficulty of unloading. A separate unloader is provided at the bottom of each unloading bin, so that several unloading bins can unload at the same time, effectively speeding up the unloading speed of the ash storage bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure of a fly ash storage unloading device for a power plant proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the ash storage bin of a power plant fly ash bin unloading device proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixed frame of a fly ash storage unloading device for a power plant proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the three-dimensional cross-sectional structure of the fixed frame of a fly ash bin unloading device for a power plant proposed by the present invention.

[0024] Figure 5 for Figure 4 A is an enlarged schematic diagram of the local three-dimensional structure of the middle part;

[0025] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the discharge pipe of a fly ash storage discharge device for a power plant proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the bulk storage of a power plant fly ash storage unloading device proposed by the present invention.

[0027] In the figure: 1. ash storage bin; 101. feed pipe; 102. discharge bin; 2. fixing frame; 201. sliding groove; 202. vibration rod; 203. spring; 204. air distribution pipe; 205. vibration motor; 206. first Roots blower; 207. main through-pipe; 208. fine mesh; 3. discharge pipe; 301. discharger; 302. second Roots blower; 303. bucket elevator; 304. bulk bin; 305. support frame; 306. inclined pipe; 307. dry ash bulk loader; 4. first bag-type dust collector; 401. first air inlet pipe; 402. second bag-type dust collector; 403. second air inlet pipe; 404. third bag-type dust collector; 405. third air inlet pipe; 5. umbrella cover; 501. protective bin; 6. support rod; 601. support hole; 602. support roller. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0029] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] like Figure 1-Figure 5As shown, a fly ash bin unloading device for a power plant includes an ash storage bin 1, the top surface of the ash storage bin 1 is connected to and fixed with a feed pipe 101, the inner bottom surface of the ash storage bin 1 is provided with a plurality of unloading bins 102, and the space of the inner bottom surface of the ash storage bin 1 is evenly divided; the interior of the ash storage bin 1 is provided with a vibration assembly for assisting unloading, and the vibration assembly includes two fixed frames 2 fixed inside the ash storage bin 1, the bottom surface of the fixed frame 2 is provided with a plurality of sliding grooves 201, and the interior of the sliding groove 201 is provided with a plurality of vibration rods 202 for sliding, and springs 203 are fixed between both sides of the vibration rod 202 and the inner sides of the sliding groove 201, and an air distribution pipe 204 is fixed inside the vibration rod 202, and the bottom end of the air distribution pipe 204 extends to the bottom opening of the vibration rod 202.

[0032] like Figure 2-Figure 5 As shown, in this embodiment, among the several vibration rods 202, a vibration motor 205 is fixed between every two adjacent vibration rods 202, and two first Roots blowers 206 are fixed on one side of the ash storage bin 1. The air outlet of the first Roots blower 206 is connected to the main through-pipe 207, and the air distribution pipe 204 is connected and fixed to the outer wall of the main through-pipe 207. By evenly arranging several conical unloading bins 102 on the bottom surface of the ash storage bin 1, the coal ash at the bottom of the ash storage bin 1 is respectively introduced into several unloading bins 102, which effectively balances the pressure of the coal ash at the bottom of the ash storage bin 1, and prevents the pressure of all the coal ash above the single conical lower bin from accumulating to cause agglomeration and increase the difficulty of unloading. The bin 102 can unload materials at the same time, which effectively speeds up the unloading speed of the ash storage bin 1. When unloading, the first Roots blower 206 is started to input airflow to the main pipe 207, so that the airflow enters the air distribution pipe 204 and is discharged from the bottom end of the vibration rod 202 to blow to the bottom layer of the coal ash. At the same time, the vibration motor 205 is started to drive the vibration rod 202 to vibrate rapidly back and forth. During this process, the vibration rod 202 slides and vibrates repeatedly inside the sliding groove 201. The vibration rod 202 also continuously compresses the spring 203. The spring 203 continuously releases elastic potential energy to make the vibration rod 202 vibrate more violently, so that the coal ash in the unloading bin 102 is vibrated and loosened, and the airflow assists in blowing away the coal ash to ensure the fluidity of the coal ash.

[0033] like Figure 2-Figure 5 As shown, in this embodiment, a fine mesh 208 is fixed at the bottom opening of the vibration rod 202. The fine mesh 208 can prevent coal ash from entering the interior of the vibration rod 202 through the bottom opening of the vibration rod 202.

[0034] like Figure 4-Figure 7As shown, in this embodiment, two unloading pipes 3 are provided below the ash storage bin 1, and a discharger 301 is fixed between the bottom surface of the unloading bin 102 and the outer wall of the unloading pipe 3. A second Roots blower 302 is installed at one end of the unloading pipe 3. By opening the discharger 301, the coal ash can be discharged from the inside of the unloading bin 102 into the unloading pipe 3 in a controllable manner. The second Roots blower 302 can introduce airflow into the inside of the unloading pipe 3 and push the coal ash out of the unloading pipe 3.

[0035] like Figure 4-Figure 7 As shown, in this embodiment, a bucket elevator 303 is provided on one side of the ash storage bin 1, and a discharge pipe 3 is connected to the feed end of the bucket elevator 303. A bulk bin 304 is provided on one side of the bucket elevator 303, and a support frame 305 is fixed to the outer wall of the bulk bin 304. After the coal ash enters the interior of the bucket elevator 303 through the discharge pipe 3, the bucket elevator 303 continuously lifts the coal ash and transports it to a higher place.

[0036] like Figure 4-Figure 7 As shown, in this embodiment, the discharge end of the bucket elevator 303 is connected to an inclined tube 306, the inclined tube 306 is connected to the feed end of the top surface of the bulk storage 304, and a dry ash bulker 307 is installed on the bottom surface of the bulk storage 304. When the bucket elevator 303 continuously lifts the coal ash to the inclined tube 306, the coal ash enters the interior of the bulk storage 304 along the inclined tube 306 under the action of gravity and waits for loading.

[0037] like Figure 4-Figure 7 As shown, in this embodiment, a first bag dust collector 4 is installed on the top surface of the ash storage bin 1, and a first air inlet pipe 401 is fixedly connected between the air inlet of the first bag dust collector 4 and the top surface of the ash storage bin 1, and the ash hopper of the first bag dust collector 4 is also fixedly connected to the top surface of the ash storage bin 1. A second bag dust collector 402 is provided on the other side of the bucket elevator 303, and a second air inlet pipe 403 is fixedly connected between the air inlet of the second bag dust collector 402 and the feeding end of the bucket elevator 303, and the ash hopper of the second bag dust collector 402 is also fixedly connected to the feeding end of the bucket elevator 303. The bulk bin 30 4 is fixed to the top surface of the third bag dust collector 404, the air inlet of the third bag dust collector 404 is connected to the top surface of the bulk silo 304 and a third air inlet pipe 405 is fixed thereto, and the ash discharge hopper of the third bag dust collector 404 is also connected and fixed to the top surface of the bulk silo 304. The dust raised by the coal ash entering the ash storage silo 1, the bucket elevator 303 and the bulk silo 304 can be respectively suppressed by the first bag dust collector 4, the second bag dust collector 402 and the third bag dust collector 404, and at the same time recovered and discharged into the ash storage silo 1, the bucket elevator 303 and the bulk silo 304.

[0038] like Figure 4-Figure 7As shown, in this embodiment, an umbrella cover 5 is fixed to the top surface of the fixing frame 2, and a protective bin 501 is fixed to the outer wall of the vibration motor 205. The umbrella cover 5 can prevent the coal ash from accumulating on the top surface of the fixing frame 2 when it is discharged into the ash storage bin 1, and the protective bin 501 can protect the vibration motor 205 to prevent the vibration motor 205 from being damaged by the coal ash.

[0039] like Figure 4-Figure 7 As shown, in this embodiment, two support rods 6 are fixed inside the sliding groove 201, and two support holes 601 are opened on one side of the vibration rod 202. The support rods 6 and the support holes 601 are slidingly arranged inside, and the spring 203 is movably sleeved on the outer wall of the support rod 6. By setting the support rod 6, the spring 203 can be supported to prevent the spring 203 from lateral deformation.

[0040] like Figure 4-Figure 7 As shown, in this embodiment, support rollers 602 are fixed to the inner top and bottom surfaces of the support hole 601, and the two support rollers 602 are respectively abutted against the top and bottom surfaces of the support rod 6. By setting the support rollers 602 to abut against the outer wall of the support rod 6, the vibration rod 202 plays a role of sliding support when vibrating, thereby preventing the vibration rod 202 from being worn.

[0041] From the above description, it can be seen that the above embodiment of the present invention achieves the following technical effects: in use, when it is necessary to unload the fly ash, the first Roots blower 206 is started to input air flow to the main passage 207, so that the air flow enters the air distribution pipe 204 and is discharged from the bottom end of the vibration rod 202 to blow to the bottom layer of the fly ash. In this process, the vibration motor 205 is started to drive the vibration rod 202 to vibrate rapidly back and forth. In this process, the vibration rod 202 slides and vibrates repeatedly inside the sliding groove 201, and the support roller 602 rolls on the outer wall of the support rod 6, thereby continuously compressing the spring 203. The spring 203 continuously releases elastic potential energy to make the vibration rod 202 vibrate more violently, so that the unloading The coal ash in the silo 102 is vibrated and loosened, and the airflow assists in blowing away the coal ash to ensure the fluidity of the coal ash. At this time, the discharger 301 is opened to discharge the coal ash into the interior of the discharge pipe 3. At this time, the second Roots blower 302 is started to generate an airflow to blow the discharged coal ash, so that the coal ash is discharged from the discharge pipe 3 into the bucket elevator 303 under the push of the airflow. The bucket elevator 303 is started to continuously lift the coal ash to the inclined pipe 306. Under the action of gravity, the coal ash slides along the inclined pipe 306 into the interior of the bulk warehouse 304, and then the filling truck drives to the bottom of the bulk warehouse 304, and then the dry ash bulker 307 is started to descend to the feed inlet of the filling truck, and then the dry ash bulker 307 is started to start loading.

[0042] The basic principles, main features and advantages of the present invention are shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A fly ash storage unloading device for a power plant, comprising an ash storage bin (1), characterized in that: The top surface of the ash storage bin (1) is connected to and fixed with a feed pipe (101), the inner bottom surface of the ash storage bin (1) is provided with a plurality of discharge bins (102), and the plurality of discharge bins (102) evenly divide the space of the inner bottom surface of the ash storage bin (1), and the interior of the ash storage bin (1) is provided with a vibration assembly for assisting in unloading, and the vibration assembly includes two fixed frames (2) fixed inside the ash storage bin (1), the bottom surface of the fixed frames (2) is provided with a plurality of sliding grooves (201), and the interior of the sliding grooves (201) is provided with a plurality of vibration rods (202) for sliding, and springs (203) are fixed between both sides of the vibration rods (202) and both sides of the interior of the sliding grooves (201), and an air distribution pipe (204) is fixed inside the vibration rod (202), and the bottom end of the air distribution pipe (204) extends to the bottom opening of the vibration rod (202).

2. A fly ash storage unloading device for a power plant according to claim 1, characterized in that: Among the plurality of vibration rods (202), a vibration motor (205) is fixed between each two adjacent vibration rods (202), two first Roots blowers (206) are fixed on one side of the ash storage bin (1), the air outlets of the first Roots blowers (206) are connected to a main through-pipe (207), and the air distribution pipe (204) is connected and fixed to the outer wall of the main through-pipe (207).

3. A fly ash storage unloading device for a power plant according to claim 2, characterized in that: A fine mesh (208) is fixed at the bottom opening of the vibration rod (202).

4. A fly ash storage unloading device for a power plant according to claim 3, characterized in that: Two discharge pipes (3) are provided below the ash storage bin (1), a discharger (301) is fixed between the bottom surface of the discharge bin (102) and the outer wall of the discharge pipe (3), and a second Roots blower (302) is installed at one end of the discharge pipe (3).

5. A fly ash storage unloading device for a power plant according to claim 4, characterized in that: A bucket elevator (303) is provided on one side of the ash storage bin (1), a discharge pipe (3) is connected to the feed end of the bucket elevator (303), a bulk bin (304) is provided on one side of the bucket elevator (303), and a support frame (305) is fixed to the outer wall of the bulk bin (304).

6. A fly ash storage unloading device for a power plant according to claim 5, characterized in that: The discharge end of the bucket elevator (303) is connected to an inclined pipe (306), which is connected to the feed end of the top surface of the bulk storage (304), and a dry ash bulker (307) is installed on the bottom surface of the bulk storage (304).

7. A fly ash storage unloading device for a power plant according to claim 6, characterized in that: A first bag dust collector (4) is installed on the top surface of the ash storage bin (1), and a first air inlet pipe (401) is fixedly connected between the air inlet of the first bag dust collector (4) and the top surface of the ash storage bin (1). The ash discharge hopper of the first bag dust collector (4) is also fixedly connected to the top surface of the ash storage bin (1). A second bag dust collector (402) is provided on the other side of the bucket elevator (303), and the air inlet of the second bag dust collector (402) is connected to the feeding end of the bucket elevator (303). A second air inlet pipe (403) is fixed thereto, and the dust discharge hopper of the second bag dust collector (402) is also connected and fixed to the feed end of the bucket elevator (303). A third bag dust collector (404) is fixed to the top surface of the bulk silo (304). The air inlet of the third bag dust collector (404) is connected to the top surface of the bulk silo (304) and a third air inlet pipe (405) is fixed thereto. The dust discharge hopper of the third bag dust collector (404) is also connected and fixed to the top surface of the bulk silo (304).

8. The fly ash storage unloading device for a power plant according to claim 7, characterized in that: An umbrella cover (5) is fixed to the top surface of the fixing frame (2), and a protective compartment (501) is fixed to the outer wall of the vibration motor (205).

9. A fly ash storage unloading device for a power plant according to claim 8, characterized in that: Two support rods (6) are fixed inside the sliding groove (201), and two support holes (601) are opened on one side of the vibration rod (202). The support rods (6) and the support holes (601) are slidably arranged inside, and the spring (203) is movably sleeved on the outer wall of the support rod (6).

10. A fly ash storage unloading device for a power plant according to claim 9, characterized in that: Support rollers (602) are fixed to the inner top surface and bottom surface of the support hole (601), and the two support rollers (602) are respectively in contact with the top surface and bottom surface of the support rod (6).

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