Ash discharging and suppressing device for waste ash bin

Abstract

The utility model discloses an ash discharge and dust suppression device for a waste ash bin. The ash discharge and dust suppression device comprises an ash discharge sealing box and an ash discharge funnel, the top of the ash discharging sealing box is connected with an ash discharging funnel; the funnel is connected with an outlet flange of the waste ash bin; an air suction opening in the top of the ash discharging sealing box is connected with the top of the waste ash bin through a sealing box air suction pipe, and a dust removal assembly is further arranged on the top of the waste ash bin. Flying dust in the sealing box can be prevented from overflowing, meanwhile, the flying dust in the box is filtered into clean air through the bin top dust remover and then discharged, and flying dust pollution is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a waste ash bin ash unloading and dust suppression device. Background Art

[0002] The production processes of many factories generate large amounts of dust. This dust is drawn into the dust collector through dust removal ducts and filtered, ultimately settling in the ash hopper at the bottom of the dust collector. The ash in the hopper is then pneumatically conveyed to the waste ash silo. A silo top dust collector is located on top of the silo, with a gate valve and a star-shaped discharger at the bottom. Compressed air pushes the waste ash into the silo, creating a positive pressure inside. Due to the pressure differential between the inside and outside of the silo, the air inside is first filtered through the filter cartridges in the silo top dust collector before being discharged through the silo's outlet. When the waste ash in the silo reaches a certain volume, the star-shaped discharger opens and begins unloading. Typically, ton bags are placed on wooden pallets to collect the ash. To prevent dust pollution, a rolled belt seal is used between the ton bag opening and the ash discharge port. Once the ton bag is full, it is removed by forklift.

[0003] The advantage is that the rolled strip can play a certain sealing role and can realize the ash unloading process normally.

[0004] The disadvantage is that during the ash unloading process, the rolled strip cannot be completely sealed, and dust will overflow from the connection between the ton bag and the ash unloading port, polluting the surrounding environment. At the same time, manual cleaning is required regularly, which does not meet national environmental protection requirements. Utility Model Content

[0005] In view of the above problems, the purpose of the present invention is to provide a waste ash bin unloading and dust suppression device that effectively reduces dust pollution.

[0006] The technical solution for realizing the present utility model is as follows

[0007] The waste ash bin ash unloading and dust suppression device includes the ash unloading sealing box and the ash unloading funnel; the top of the ash unloading sealing box is connected to the ash unloading funnel, and the funnel is connected to the waste ash bin outlet flange; the air suction port on the top of the ash unloading sealing box and the top of the waste ash bin are connected through the sealing box suction duct, and a dust removal component is also provided on the top of the waste ash bin.

[0008] The dust removal assembly includes a dust collector installed on the waste ash bin and a fan added at the top outlet of the dust collector.

[0009] The ash unloading sealed box is provided with a sealed box door on the ash unloading side, and a sealing strip is provided between the sealed box door and the ash unloading sealed box.

[0010] There are four hooks at the four corners inside the dust unloading sealing box.

[0011] The straight pipe section of the ash unloading sealing box is equipped with a sealing box level meter via an internal thread joint.

[0012] The ash discharge sealing box is provided with a proximity switch on the ash discharge side.

[0013] A pneumatic butterfly valve is provided at the connection between the air suction duct of the sealing box and the waste ash bin.

[0014] The angle between the air suction duct of the sealed box and the interface of the waste ash bin is 135°.

[0015] Compared with the existing technology, the beneficial effect of the utility model is that the patented structure can ensure that the dust in the sealed box does not overflow, and at the same time, the dust in the box is filtered into clean air through the dust collector on the top of the silo before being discharged, effectively reducing dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] In the accompanying drawings, 1 is an ash unloading sealed box, 2 is an ash unloading funnel, 3 is an air suction duct for the sealed box, 4 is a dust removal assembly, 5 is a dust collector, 6 is a fan, 7 is a sealed box door, 8 is a ton bag, 9 is a hook, 10 is a straight pipe section, 11 is a level meter for the sealed box, 12 is a proximity switch, 13 is a pneumatic butterfly valve, 15 is a star-shaped discharger, and 16 is a waste ash bin. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described 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.

[0019] See also Figure 1 The schematic diagram of the structure of the present application is shown, and the dust suppression device for unloading ash from the waste ash bin includes the ash unloading sealed box 1 and the ash unloading funnel 2; the top of the ash unloading sealed box is fixedly connected to the ash unloading funnel, the funnel and the box body are fully welded, the funnel is connected to the waste ash bin outlet flange, and the waste ash enters the ash unloading sealed box from the funnel; the air suction port on the top of the ash unloading sealed box is connected to the top of the waste ash bin through the sealed box suction duct 3, and a dust removal component 4 is also provided on the top of the waste ash bin. When workers go to unload ash, they need to open the sealed box door. At this time, the dust in the sealed box may overflow. In order to solve this problem, it is necessary to maintain a negative pressure in the sealed box so that the air outside the box flows from the outside to the inside, so that the dust cannot overflow and ensure the cleanliness of the outside. The dust removal component of the waste ash bin 16 is connected through the sealed box suction duct to ensure that the discharged dust can be filtered into clean air before being discharged to avoid environmental pollution.

[0020] The dust removal assembly includes a dust collector 5 installed on the waste ash bin and a fan 6 added at the top outlet of the dust collector. The top outlet flange of the bin top dust collector and the fan inlet flange are made in a matching manner.

[0021] The ash unloading sealed box is provided with a sealed box door 7 on the ash unloading side, and a sealing strip is arranged between the sealed box door and the ash unloading sealed box to enhance the sealing effect; wherein the ash unloading sealed box is made of thin steel plates welded together and is durable.

[0022] Four hooks 9 are welded at the four corners of the ash unloading sealing box to hook the four corners of the ton bag 8.

[0023] The straight pipe section 10 of the sealed ash unloading box is equipped with a sealed box level meter 11 via a female threaded joint. An opening is made at the straight pipe and a female threaded joint is welded to the straight pipe. The level meter is then threadedly connected to the joint. When the waste ash reaches the level meter, the level meter gives an alarm signal, notifying the worker that the ton bag is full and closing the star-shaped discharger below the waste ash bin to stop unloading the ash bin.

[0024] The dust discharge sealing box is provided with a proximity switch 12 on the dust discharge side for detecting whether the box door is in an open state or a closed state, and turning off the fan when the box door is in a closed state.

[0025] A pneumatic butterfly valve 13 is installed at the connection between the sealed box's suction duct and the waste ash bin. When the waste ash bin is feeding, compressed air from the pneumatic conveying pipe pushes the waste ash into the bin, creating positive pressure inside the bin. Since the bin and sealed box are connected by an air duct, the sealed box is at normal pressure. Dust from the bin can flow through the air duct into the sealed box, causing dust accumulation inside the box. To prevent this from happening, a pneumatic butterfly valve is installed at the connection between the sealed box's suction duct and the waste ash bin. The pneumatic butterfly valve is flange-connected to the sealed box's suction duct. When the ash bin is unloading ash, the pneumatic butterfly valve is in the normally open state, so that the dust in the sealed box can be smoothly sucked into the ash bin, and then filtered by the dust collector on the top of the silo and discharged from the fan outlet; when the ash bin is entering ash, the pneumatic butterfly valve is closed, so that the air in the bin cannot flow into the sealed box. At this time, the ash bin is under positive pressure, and the excess air in the bin will be filtered by the dust collector on the top of the silo and naturally discharged through the fan volute. After the pressure in the waste ash bin is unloaded, the pneumatic butterfly valve returns to normal opening.

[0026] The angle a between the air intake duct of the sealing box and the interface of the waste ash bin is 135 degrees. This prevents waste ash from accumulating in the air duct in front of the butterfly valve, thus avoiding affecting the sealing performance when the valve is closed.

[0027] Here's how it works:

[0028] When the sealed box level meter detects that the ash unloading sealed box is full, it will alarm and close the star-shaped discharger 15, while turning on the fan. When the waste ash bin is unloading, no compressed air enters the pneumatic conveying pipe. The waste ash bin will maintain a negative pressure due to the fan. The air duct between the ash unloading sealed box and the waste ash bin is interconnected, which will also be under negative pressure. After the worker arrives and opens the sealed box door, air will flow into the sealed box from outside, thereby preventing dust from overflowing. The dust in the box enters the waste ash bin through the suction duct, is filtered by the dust collector on the waste ash bin roof, and is discharged from the fan outlet. After the worker finishes unloading, installs the empty ton bag, closes the sealed box door, triggers the proximity switch, and stops the fan.

Claims

1. The dust suppression device for waste ash bin unloading is characterized by: It includes an ash unloading sealed box and an ash unloading funnel; the top of the ash unloading sealed box is connected to the ash unloading funnel, and the funnel is connected to the outlet flange of the waste ash bin; the air suction port on the top of the ash unloading sealed box and the top of the waste ash bin are connected through a sealed box suction duct, and a dust removal component is also provided on the top of the waste ash bin.

2. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: The dust removal assembly includes a dust collector installed on the waste ash bin and a fan added at the top outlet of the dust collector.

3. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: The ash unloading sealed box is provided with a sealed box door on the ash unloading side, and a sealing strip is provided between the sealed box door and the ash unloading sealed box.

4. The waste ash bin dust suppression device according to claim 1, characterized in that: There are four hooks at the four corners inside the dust unloading sealing box.

5. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: The straight pipe section of the ash unloading sealing box is equipped with a sealing box level meter via an internal thread joint.

6. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: The ash discharge sealing box is provided with a proximity switch on the ash discharge side.

7. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: A pneumatic butterfly valve is provided at the connection between the air suction duct of the sealing box and the waste ash bin.

8. The waste ash bin ash unloading and dust suppression device according to claim 1, characterized in that: The angle between the air suction duct of the sealed box and the interface of the waste ash bin is 135°.

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