Dust collecting device for feed opening of wet ash discharging stirrer of ash silo

Abstract

The utility model relates to the technical field of dust collection devices, in particular to a dust collection device for a feed opening of a wet ash discharging stirrer of an ash silo, which is convenient for realizing a dust suppression effect, reducing the pollution of a working environment, improving the operation safety and improving the environmental protection effect. Comprising a dust collection cover shell and a wet ash discharging opening, the wet ash discharging opening is formed in the top end of the dust collection cover shell in a communicating mode, the dust collection cover shell is installed below an ash silo discharging opening, and the top end of the wet ash discharging opening is communicated with the ash silo discharging opening; the top end of the connecting ring is connected with the outer side wall of the bottom end of the dust collecting cover shell, the top end of the dust blocking soft curtain is connected with the outer side wall of the connecting ring, the input end of the collecting device communicates with the upper portion of the dust collecting cover shell, and the output end of the collecting device communicates with external electric dust removing equipment; the collecting device is used for collecting generated tiny flying dust, and a fixing device is arranged on the dust collecting cover shell and used for fixing the dust collecting cover shell to the outer side wall of an ash silo.

Description

Technical Field

[0001] This utility model relates to the technical field of dust collection devices, and in particular to a dust collection device for the discharge port of a wet unloading ash mixer in an ash silo. Background Technology

[0002] The discharge port of the twin-shaft mixer (wet ash unloading device) in the ash silo of a thermal power plant generates a lot of dust during operation, causing serious environmental pollution. The bag filter dust collectors used in ordinary times cannot be used for dust collection in wet ash unloading in the ash silo due to dust caking.

[0003] Currently, the existing technology authorization announcement number CN210064534U discloses a wet ash unloading and dust suppression device for ash silos, which includes an ash hopper, an ash conveying pipe, a feeder, a mixer, a high-pressure water tank, a water conveying pipe, a spray pipe, and several spray heads.

[0004] However, it was found during the use of the device that it was not very effective at collecting fine dust, which increased the pollution of the working environment by fine dust and reduced the environmental protection effect. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a dust collection device at the discharge port of a wet unloading ash mixer in an ash silo, which facilitates dust suppression, reduces pollution in the working environment, improves operational safety, and enhances environmental protection.

[0006] This utility model discloses a dust collection device for the discharge port of a wet ash mixer in an ash silo. It includes a dust collection hood housing and a wet ash discharge port. The wet ash discharge port is connected to the top of the dust collection hood housing, which is installed below the ash silo discharge port. The top of the wet ash discharge port is connected to the ash silo discharge port. It also includes a fixing device, a connecting ring, a dust-blocking curtain, and a collecting device. The top of the connecting ring is connected to the outer wall of the bottom of the dust collection hood housing, and the top of the dust-blocking curtain is connected to the outer wall of the connecting ring. The input end of the collecting device is connected to the upper part of the dust collection hood housing, and the output end is connected to an external electrostatic precipitator. The collecting device is used to collect the generated dust. The dust collection system uses a fixing device on the dust collection hood shell to secure it to the outer wall of the ash silo. The ash silo discharges material downwards through the wet ash discharge port, allowing the material to be discharged into the lower carriage. Larger pieces of wet ash pass directly into the carriage through the dust collection hood shell and the dust-blocking curtain. An external electrostatic precipitator draws air into the collection device, causing the collection device to draw air into the dust collection hood shell. This process transports some of the fine dust particles through the collection device to the external electrostatic precipitator, achieving dust suppression, reducing work environment pollution, improving operational safety, and enhancing environmental protection.

[0007] Preferably, the collection device includes multiple sets of first conveying pipes, second conveying pipes, and an electrostatic precipitator inlet pipe. The input ends of the multiple sets of first conveying pipes are all connected to the upper part of the outer wall of the dust collection hood shell, and the output ends of the multiple sets of first conveying pipes are all connected to the second conveying pipes. The output end of the second conveying pipes is connected to the electrostatic precipitator inlet pipe, which is connected to an external electrostatic precipitator. The external electrostatic precipitator draws air into the electrostatic precipitator inlet pipe, causing the electrostatic precipitator inlet pipe to draw air into the dust collection hood shell through the second conveying pipe and the multiple sets of first conveying pipes. After a negative pressure is generated inside the dust collection hood shell, the fine dust particles are transported to the electrostatic precipitator, reducing the diffusion of dust.

[0008] Preferably, it also includes multiple sets of isolation valves, which are connected and arranged between multiple sets of first delivery pipes and second delivery pipes; by controlling the opening and closing of multiple sets of isolation valves, the convenience of isolation control between the second delivery pipe and multiple sets of first delivery pipes is improved.

[0009] Preferably, it also includes a powder flow meter, which is connected and installed on the second conveying pipe; by installing the powder flow meter, the convenience of detecting absorbed dust is improved.

[0010] Preferably, the fixing device includes a fixing base and a connector. The fixing base is installed on the outer wall of the ash silo, the top end of the connector is connected to the fixing base, and the bottom end of the connector is connected to the dust collection hood shell; thus improving the convenience of installing and positioning the dust collection hood shell.

[0011] Preferably, the dust collection hood shell is made of stainless steel to improve its corrosion resistance.

[0012] Preferably, the dust-blocking soft curtain is adjustable up and down according to the height of the carriage; this improves the ease of dust collection operations for carriages of different heights.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the ash silo discharges material downward through the wet ash discharge port, thereby discharging the material into the lower carriage. Larger wet ash directly enters the carriage through the dust collection hood shell and the dust-blocking soft curtain. The external electrostatic precipitator sucks air into the collection device, causing the collection device to suck air into the dust collection hood shell, thereby transporting some of the fine dust through the collection device to the external electrostatic precipitator, achieving dust suppression, reducing pollution in the working environment, improving operational safety, and enhancing environmental protection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view schematic diagram of the connection between the dust collection hood shell and the wet ash discharge port, etc.

[0016] Figure 3 This is a side view of the structure connecting the dust collection hood housing and the first conveying pipe, etc.

[0017] Figure 4 This is a top view schematic diagram of the connection structure between the first and second conveying pipes.

[0018] The following are labeled in the attached diagram: 1. Dust collection hood housing; 2. Wet ash discharge port; 3. Connecting ring; 4. Dust-blocking soft curtain; 5. Collection device; 6. First conveying pipe; 7. Second conveying pipe; 8. Electrostatic precipitator inlet pipe; 9. Isolation valve; 10. Powder flow meter; 11. Fixed base; 12. Connecting parts. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] like Figures 1 to 4 As shown, this utility model discloses a dust collection device for the discharge port of a wet ash mixer in an ash silo. It includes a dust collection hood housing 1 and a wet ash discharge port 2. The wet ash discharge port 2 is connected to the top of the dust collection hood housing 1, which is installed below the ash silo discharge port. The top of the wet ash discharge port 2 is connected to the ash silo discharge port. It also includes a fixing device, a connecting ring 3, a dust-blocking soft curtain 4, and a collecting device 5. The top of the connecting ring 3 is connected to the outer wall of the bottom of the dust collection hood housing 1, and the top of the dust-blocking soft curtain 4 is connected to the outer wall of the connecting ring 3. The input end of the collecting device 5 is connected to the upper part of the dust collection hood housing 1, and the output end of the collecting device 5 is connected to an external electrostatic precipitator. The collecting device 5 is used to collect the generated fine dust. A fixing device is provided on the dust collection hood housing 1 to fix the dust collection hood housing 1 to the outer wall of the ash silo.

[0022] like Figure 1 and Figure 2 As shown, the collection device 5 includes multiple sets of first conveying pipes 6, second conveying pipes 7, and electrostatic precipitator inlet pipes 8. The input ends of the multiple sets of first conveying pipes 6 are all connected to the upper part of the outer wall of the dust collection hood housing 1. The output ends of the multiple sets of first conveying pipes 6 are all connected to the second conveying pipes 7. The output end of the second conveying pipes 7 is connected to the electrostatic precipitator inlet pipe 8. The electrostatic precipitator inlet pipe 8 is connected to an external electrostatic precipitator.

[0023] In this embodiment, the ash silo discharges material downward through the wet ash discharge port 2, thereby discharging the material into the lower carriage. Larger wet ash particles directly enter the carriage through the dust collection hood shell 1 and the dust-blocking soft curtain 4. The external electrostatic precipitator sucks air into the collection device 5, causing the collection device 5 to suck air into the dust collection hood shell 1. This allows some of the fine dust particles to be transported through the collection device 5 to the external electrostatic precipitator, achieving dust suppression, reducing pollution in the working environment, improving operational safety, and enhancing environmental protection.

[0024] Example 2

[0025] Based on Example 1, such as Figure 2 As shown, the dust collection device at the discharge port of the wet unloading ash mixer of the ash silo of this utility model also includes multiple sets of isolation valves 9, which are connected and arranged between multiple sets of first conveying pipes 6 and second conveying pipes 7.

[0026] like Figure 2 As shown, it also includes a powder flow meter 10, which is connected to the second conveying pipe 7.

[0027] like Figure 1 As shown, the fixing device includes a fixing base 11 and a connector 12. The fixing base 11 is installed on the outer wall of the ash silo, the top end of the connector 12 is connected to the fixing base 11, and the bottom end of the connector 12 is connected to the dust collection hood housing 1.

[0028] like Figure 1 As shown, the material of the dust collection hood housing 1 is stainless steel;

[0029] like Figure 1 As shown, the dust-blocking soft curtain 4 can be adjusted up and down according to the height of the carriage;

[0030] In this embodiment, the external electrostatic precipitator draws air into the electrostatic precipitator inlet pipe 8, which then draws air into the dust collection hood housing 1 through the second conveying pipe 7 and multiple sets of first conveying pipes 6. After a negative pressure is generated inside the dust collection hood housing 1, the fine dust particles are transported to the electrostatic precipitator, reducing the spread of dust. By controlling the opening and closing of multiple sets of isolation valves 9, the convenience of isolation control between the second conveying pipe 7 and the multiple sets of first conveying pipes 6 is improved.

[0031] This utility model discloses a dust collection device for the discharge port of a wet ash mixer in an ash silo. During operation, the ash silo discharges material downward through the wet ash discharge port 2, thereby discharging the material into the lower carriage. Larger wet ash particles directly enter the carriage through the dust collection hood shell 1 and the dust-blocking soft curtain 4. The external electrostatic precipitator sucks air into the collection device 5, causing the collection device 5 to suck air into the dust collection hood shell 1, thereby transporting some fine dust particles through the collection device 5 to the external electrostatic precipitator.

[0032] The powder flow meter 10 of the dust collection device at the discharge port of the wet unloading ash mixer of the ash silo of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without the need for technical personnel in this field to make any creative efforts.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An ash storage wet unloading ash mixer discharge port dust collection device, comprising a dust collection cover shell (1) and a wet ash discharge port (2), the wet ash discharge port (2) is communicated and arranged at the top end of the dust collection cover shell (1), the dust collection cover shell (1) is installed below the ash storage discharge port, and the top end of the wet ash discharge port (2) is communicated with the ash storage discharge port; characterized in that, The dust collection hood shell (1) is provided with a fixing device, a connecting ring (3), a dustproof soft curtain (4) and a collecting device (5). The top end of the connecting ring (3) is connected with the outer side wall of the bottom end of the dust collection hood shell (1), the top end of the dustproof soft curtain (4) is connected with the outer side wall of the connecting ring (3), the input end of the collecting device (5) is in communication with the upper part of the dust collection hood shell (1), the output end of the collecting device (5) is in communication with an external electric dust removal equipment, the collecting device (5) is used for collecting the generated tiny flying dust, the dust collection hood shell (1) is provided with the fixing device, and the fixing device is used for fixing the dust collection hood shell (1) on the outer side wall of the ash storage.

2. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 1, characterized in that, The collecting device (5) comprises a plurality of groups of first conveying pipes (6), second conveying pipes (7) and electric dust removal inlet pipes (8). The input ends of the plurality of groups of first conveying pipes (6) are in communication with the upper part of the outer side wall of the dust collection hood shell (1), the output ends of the plurality of groups of first conveying pipes (6) are in communication with the second conveying pipes (7), the output ends of the second conveying pipes (7) are in communication with the electric dust removal inlet pipes (8), and the electric dust removal inlet pipes (8) are in communication with the external electric dust removal equipment.

3. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 2, characterized in that, The dust collection hood shell (1) is provided with a fixing device, a connecting ring (3), a dustproof soft curtain (4) and a collecting device (5). The top end of the connecting ring (3) is connected with the outer side wall of the bottom end of the dust collection hood shell (1), the top end of the dustproof soft curtain (4) is connected with the outer side wall of the connecting ring (3), the input end of the collecting device (5) is in communication with the upper part of the dust collection hood shell (1), the output end of the collecting device (5) is in communication with an external electric dust removal equipment, the collecting device (5) is used for collecting the generated tiny flying dust, the dust collection hood shell (1) is provided with the fixing device, and the fixing device is used for fixing the dust collection hood shell (1) on the outer side wall of the ash storage.

4. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 2, characterized in that, The collecting device (5) comprises a plurality of groups of first conveying pipes (6), second conveying pipes (7) and electric dust removal inlet pipes (8). The input ends of the plurality of groups of first conveying pipes (6) are in communication with the upper part of the outer side wall of the dust collection hood shell (1), the output ends of the plurality of groups of first conveying pipes (6) are in communication with the second conveying pipes (7), the output ends of the second conveying pipes (7) are in communication with the electric dust removal inlet pipes (8), and the electric dust removal inlet pipes (8) are in communication with the external electric dust removal equipment.

5. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 1, characterized in that, The dust collection hood shell (1) is provided with a fixing device, a connecting ring (3), a dustproof soft curtain (4) and a collecting device (5). The top end of the connecting ring (3) is connected with the outer side wall of the bottom end of the dust collection hood shell (1), the top end of the dustproof soft curtain (4) is connected with the outer side wall of the connecting ring (3), the input end of the collecting device (5) is in communication with the upper part of the dust collection hood shell (1), the output end of the collecting device (5) is in communication with an external electric dust removal equipment, the collecting device (5) is used for collecting the generated tiny flying dust, the dust collection hood shell (1) is provided with the fixing device, and the fixing device is used for fixing the dust collection hood shell (1) on the outer side wall of the ash storage.

6. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 1, characterized in that, The collecting device (5) comprises a plurality of groups of first conveying pipes (6), second conveying pipes (7) and electric dust removal inlet pipes (8). The input ends of the plurality of groups of first conveying pipes (6) are in communication with the upper part of the outer side wall of the dust collection hood shell (1), the output ends of the plurality of groups of first conveying pipes (6) are in communication with the second conveying pipes (7), the 7. A dust collector for the discharge opening of a wet ash unloading agitator of an ash silo according to claim 1, characterized in that, ​

Images