Power plant fly ash negative pressure sorting device

Abstract

The utility model relates to the technical field of pulverized coal screening, and discloses a power plant pulverized coal ash negative pressure sorting device which comprises a base, a fine ash silo is fixedly connected to the left side of the surface of the base, a coarse ash silo is fixedly connected to one side of the fine ash silo, and a raw ash silo is fixedly connected to one side of the coarse ash silo. The top of the coarse ash silo is fixedly connected with a coarse ash screening assembly, and the coarse ash screening assembly comprises a first discharging pipe, a first discharging valve, a coarse powder collecting cone, a powder selecting chamber and a coal ash sorting machine. According to the negative-pressure separation device for the fly ash of the power plant, due to the arrangement of a wear-resistant material, when the negative-pressure separation device is used, a novel manganese plate and a high-aluminum ceramic layer both have good wear resistance, a communicating pipe and a coarse powder collecting cone are easy-to-wear parts of a separation machine, and the wear resistance of the coarse powder collecting cone and the communicating pipe is improved through the novel manganese plate and the high-aluminum ceramic layer; therefore, the performance of the device is improved, and the service life of the device is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverized coal screening, in particular to a negative pressure separation device for fly ash in a power plant. Background Art

[0002] Fly ash, a byproduct of coal-fired power plants, has long been a focus of environmental and industrial attention for its treatment and resource utilization. Fly ash contains a large number of fine particles with significantly varying physical and chemical properties. Proper sorting not only increases its utility but also effectively reduces environmental pollution. Negative pressure separation technology, as an efficient and environmentally friendly fly ash separation method, has garnered widespread attention and application in recent years.

[0003] At present, some devices are not compact enough, and dust will leak out during use; and the existing devices lack certain filtering components when emitting gas, and the emitted gas will contain some dust, which will cause certain pollution to the external environment.

[0004] Therefore, it is necessary to invent a power plant fly ash negative pressure sorting device to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The technical problem solved by the utility model is to provide a power plant fly ash negative pressure sorting device that is highly practical, can be easily operated, and has a relatively simple structure. It solves the problems raised in the above-mentioned background technology that the structure is not compact enough and dust ash will leak out during use; and the existing device lacks certain filtering components when emitting gas, and the emitted gas will contain some dust, which will cause certain pollution to the external environment.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a power plant fly ash negative pressure sorting device, including a base, a fine ash bin is fixedly connected to the left side of the surface of the base, a coarse ash bin is fixedly connected to one side of the fine ash bin, an original ash bin is fixedly connected to one side of the coarse ash bin, a coarse ash screening assembly is fixedly connected to the top of the coarse ash bin, the coarse ash screening assembly includes a first discharge pipe, a first discharge valve, a coarse powder collecting cone, a powder selection chamber and a fly ash separator, a connecting pipe is fixedly connected to one side of the connecting pipe, a fine ash screening assembly is fixedly connected to the fine ash separator, and the fine ash The screening assembly includes a fine powder bag dust collector, a motor box, a servo motor, an auger rod, a second discharge pipe and a second discharge valve. One side of the fine powder bag dust collector is fixedly connected to an air suction pipe, one end of the air suction pipe is fixedly connected to a centrifugal fan, the top of the centrifugal fan is fixedly connected to an air outlet pipe, the outside of the air outlet pipe is fixedly connected to a filter assembly, the filter assembly includes a filter box, two groups of filter frames and two groups of activated carbon filter layers, the interior of the coarse powder collecting cone is fixedly connected to a connecting plate, the connecting pipe and the connecting plate are fixedly connected to a wear-resistant assembly, and the wear-resistant assembly includes a new manganese plate and a high-aluminum ceramic layer.

[0009] As a further solution of the present invention, the first discharge pipe is fixedly connected to the top of the coarse ash bin, the outside of the first discharge pipe is fixedly connected to a first discharge valve, one end of the first discharge pipe is fixedly connected to a coarse powder collecting cone, the top of the coarse powder collecting cone is fixedly connected to a powder selection chamber, the top of the powder selection chamber is fixedly connected to a fly ash separator, and the first discharge valve is used to control the screening speed.

[0010] As a further solution of the present invention, the fine powder bag dust collector is fixedly connected to one side of the connecting pipe, the bottom of the fine powder bag dust collector is fixedly connected to a motor box, the inside of the motor box is fixedly connected to a servo motor, one end of the servo motor is splined to an auger rod, the bottom of the fine powder bag dust collector is fixedly connected to a second discharge pipe, the outer side of the second discharge pipe is fixedly connected to a second discharge valve, and the auger rod is used to transport fine ash.

[0011] As a further solution of the present invention, the filter box is fixedly connected to the outside of the air outlet pipe, and two groups of filter frames are slidably connected inside the filter box. The insides of the two groups of filter frames are fixedly connected with activated carbon filter layers, and the activated carbon filter layers are used for filtering.

[0012] As a further solution of the present invention, a step is fixedly connected to one side of the base, and movable baffles are provided on the surfaces of the fine ash bin, the coarse ash bin and the raw ash bin to prevent ash from leaking out.

[0013] As a further solution of the present invention, an air inlet regulating pipe is fixedly connected to one side of the fly ash separator, and an air inlet regulating valve is fixedly connected to the outer side of the air inlet regulating pipe, and the air inlet regulating valve is used to adjust the air inlet efficiency.

[0014] As a further solution of the present invention, two groups of connecting pipes are fixedly connected to one side of the air inlet regulating pipe, the outer sides of the two groups of connecting pipes are fixedly connected to switching valves, and one end of the two groups of connecting pipes is fixedly connected to a delivery pipeline, and the switching valve is used for switching.

[0015] As a further solution of the present invention, the new manganese plate is fixedly connected to the inner wall of the connecting plate, and the high-aluminum ceramic layer is fixedly connected to the inside of the connecting pipe.

[0016] (3) Beneficial effects

[0017] The utility model provides a negative pressure separation device for fly ash from a power plant, which has the following beneficial effects:

[0018] 1. The fly ash negative pressure separation device of the power plant is equipped with wear-resistant materials. When in use, the new manganese plate and high-aluminum ceramic layer have good wear resistance. The connecting pipe and coarse powder collecting cone are both easily worn parts of the separator. The new manganese plate and high-aluminum ceramic layer improve the wear resistance of the coarse powder collecting cone and the connecting pipe, reduce the wear rate of the two, thereby improving the performance of the device and effectively extending its service life.

[0019] 2. The fly ash negative pressure separation device of the power plant is equipped with a coarse ash screening component and a fine ash screening component. When in use, the centrifugal fan is started, and the raw ash is transported to the fly ash separator through the conveying pipeline by the positive pressure airflow generated by the centrifugal fan for separation. Under the action of high-speed airflow, most of the coarse and heavy particles in the material are thrown to the inner wall of the powder separation chamber by the inertial centrifugal force. After the collision, they lose kinetic energy and slide down along the wall, falling into the coarse powder collection cone and evenly discharged into the coarse ash bin through the first discharge valve; the fine particles are continued to be carried to the upper part by the negative pressure mixed gas. , it enters the fine powder bag dust collector with the negative pressure air flow, starts the servo motor, and the servo motor drives the auger to push the dust into the second discharge pipe, and then into the fine ash bin. The system is in a negative pressure state and there is no dust leakage. The fine powder is collected by using a bag dust collector, which will not cause environmental pollution and has high efficiency in collecting fine powder. It solves the problems of low fine ash collection efficiency and increased wear of fan impellers in the original old fly ash sorting system, reduces power consumption, has low system resistance, smooth process layout, compact structure, high system reliability and low investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2This is a schematic diagram of the structure of the coarse ash screening component of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the fine ash screening component of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the filter assembly of the utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the wear-resistant component of the utility model.

[0025] In the figure: 1. Base; 2. Fine ash bin; 3. Coarse ash bin; 4. Raw ash bin; 5. Coarse ash screening assembly; 501. First discharge pipe; 502. First discharge valve; 503. Coarse powder collecting cone; 504. Powder selection chamber; 505. Fly ash separator; 6. Connecting pipe; 7. Fine ash screening assembly; 701. Fine powder bag filter; 702. Motor box; 703. Servo motor; 704. Auger rod; 705. Second discharge pipe; 706. Second Discharge valve; 8. Suction pipe; 9. Centrifugal fan; 10. Air outlet pipe; 11. Filter assembly; 1101. Filter box; 1102. Filter frame; 1103. Activated carbon filter layer; 12. Step; 13. Movable baffle; 14. Air inlet regulating pipe; 15. Air inlet regulating valve; 16. Connecting pipe; 17. Switching valve; 18. Conveying pipeline; 19. Connecting plate; 20. Wear-resistant assembly; 2001. New manganese plate; 2002. High-aluminum ceramic layer. DETAILED DESCRIPTION

[0026] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 4The utility model provides a technical solution: a negative pressure separation device for fly ash in a power plant, comprising a base 1, a fine ash bin 2 is fixedly connected to the left side of the surface of the base 1, a coarse ash bin 3 is fixedly connected to one side of the fine ash bin 2, a raw ash bin 4 is fixedly connected to one side of the coarse ash bin 3, a coarse ash screening component 5 is fixedly connected to the top of the coarse ash bin 3, the raw ash is screened by the setting of the coarse ash screening component 5, the coarse ash screening component 5 comprises a first discharge pipe 501, a first discharge valve 502, a coarse powder collecting cone 503, a powder selection chamber 504 and a fly ash separator 505, one side of the fly ash separator 505 is fixedly connected to a connecting pipe 6, one side of the connecting pipe 6 is fixedly connected to a fine ash screening component 7, the coarse ash after screening is screened again by the setting of the fine ash screening component 7, the fine ash screening component 7 comprises a fine powder cloth Bag dust collector 701, motor box 702, servo motor 703, auger rod 704, second discharge pipe 705 and second discharge valve 706, one side of the fine powder bag dust collector 701 is fixedly connected to the suction pipe 8, one end of the suction pipe 8 is fixedly connected to the centrifugal fan 9, the top of the centrifugal fan 9 is fixedly connected to the outlet pipe 10, the outside of the outlet pipe 10 is fixedly connected to the filter assembly 11, through the setting of the filter assembly 11, the exhausted gas is filtered, the filter assembly 11 includes a filter box 1101, two groups of filter frames 1102 and two groups of activated carbon filter layers 1103, the interior of the coarse powder collecting cone 503 is fixedly connected to the connecting plate 19, the connecting pipe 6 and the interior of the connecting plate 19 are fixedly connected to the wear-resistant assembly 20, the wear-resistant assembly 20 includes a new manganese plate 2001 and a high-aluminum ceramic layer 2002;

[0028] See also Figure 2 The first discharge pipe 501 is fixedly connected to the top of the coarse ash bin 3. The outer side of the first discharge pipe 501 is fixedly connected to the first discharge valve 502. One end of the first discharge pipe 501 is fixedly connected to a coarse powder collecting cone 503. The top of the coarse powder collecting cone 503 is fixedly connected to a powder selection chamber 504. The top of the powder selection chamber 504 is fixedly connected to a fly ash separator 505. The first discharge valve 502 is used to control the screening speed.

[0029] See also Figure 3 , the fine powder bag dust collector 701 is fixedly connected to one side of the connecting pipe 6, the bottom of the fine powder bag dust collector 701 is fixedly connected to the motor box 702, the inside of the motor box 702 is fixedly connected to the servo motor 703, one end of the servo motor 703 is splined to the auger rod 704, the bottom of the fine powder bag dust collector 701 is fixedly connected to the second discharge pipe 705, the outer side of the second discharge pipe 705 is fixedly connected to the second discharge valve 706, and the auger rod 704 is used to transport fine ash;

[0030] See also Figure 4The filter box 1101 is fixedly connected to the outside of the air outlet pipe 10, and two sets of filter frames 1102 are slidably connected inside the filter box 1101. The insides of the two sets of filter frames 1102 are fixedly connected with activated carbon filter layers 1103, and the activated carbon filter layers 1103 are used for filtering;

[0031] See also Figure 1 , a step 12 is fixedly connected to one side of the base 1, and a movable baffle 13 is provided on the surface of the fine ash bin 2, the coarse ash bin 3 and the raw ash bin 4, and the movable baffle 13 is used to prevent ash from leaking;

[0032] See also Figure 2 , one side of the fly ash separator 505 is fixedly connected to an air inlet regulating pipe 14, and the outer side of the air inlet regulating pipe 14 is fixedly connected to an air inlet regulating valve 15, and the air inlet regulating valve 15 is used to adjust the air inlet efficiency;

[0033] See also Figure 1 Two sets of connecting pipes 16 are fixedly connected to one side of the air inlet regulating pipe 14, and the outer sides of the two sets of connecting pipes 16 are fixedly connected to the switching valve 17. One end of the two sets of connecting pipes 16 is fixedly connected to the delivery pipeline 18, and the switching valve 17 is used for switching.

[0034] See also Figure 5 The new manganese plate 2001 is fixedly connected to the inner wall of the connecting plate 19, and the high-aluminum ceramic layer 2002 is fixedly connected to the inside of the connecting pipe 6.

[0035] In the present invention, the working steps of the device are as follows:

[0036] Step 1: During use, the new manganese plate 2001 and the high-aluminum ceramic layer 2002 both have good wear resistance. The connecting pipe 6 and the coarse powder collecting cone 503 are both easily worn parts of the separator. The new manganese plate 2001 and the high-aluminum ceramic layer 2002 improve the wear resistance of the coarse powder collecting cone 503 and the connecting pipe 6, reduce the wear rate of the two, thereby improving the performance of the device and effectively extending its service life;

[0037] The second step: when in use, start the centrifugal fan 9, and the raw ash is transported to the fly ash separator 505 for sorting by the positive pressure airflow generated by the centrifugal fan 9 through the conveying pipe 18. Under the action of the high-speed airflow, most of the coarse and heavy particles in the material are thrown onto the inner wall of the powder selection chamber 504 by the inertial centrifugal force. After the collision, they lose kinetic energy and slide down along the wall, falling into the coarse powder collecting cone 503 and evenly discharged into the coarse ash bin 3 through the first discharge valve 502; the fine particle material is continued to be carried to the upper part by the negative pressure mixed gas, and enters the fine powder bag dust collector with the negative pressure airflow. In the device 701, the servo motor 703 is started, and the servo motor 703 drives the auger rod 704 to push the dust into the second discharge pipe 705, and then into the fine ash bin 2. The system is in a negative pressure state and no dust leaks out. The fine powder is collected by a bag dust collector, which will not cause environmental pollution and has high efficiency in collecting fine powder. It solves the problems of low fine ash collection efficiency and increased wear of the fan impeller in the original old fly ash sorting system, reduces power consumption, has low system resistance, smooth process layout, compact structure, high system reliability and low investment cost. It should be noted that the equipment structure and drawings of the present utility model mainly describe the principle of the present utility model. In terms of the technology of this design principle, the settings of the power mechanism, power supply system and control system of the device are not fully described clearly. On the premise that those skilled in the art understand the principle of the above-mentioned utility model, they can clearly know the details of its power mechanism, power supply system and control system. The control method of the application document is automatic control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art.

[0038] The standard parts used can be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the components known to technical personnel in this field, their structures and principles can be known to these technical personnel through technical manuals or through conventional experimental methods.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A negative pressure separation device for fly ash in a power plant, comprising a base (1), characterized in that: A fine ash bin (2) is fixedly connected to the left side of the surface of the base (1), a coarse ash bin (3) is fixedly connected to one side of the fine ash bin (2), a raw ash bin (4) is fixedly connected to one side of the coarse ash bin (3), a coarse ash screening assembly (5) is fixedly connected to the top of the coarse ash bin (3), the coarse ash screening assembly (5) comprises a first discharge pipe (501), a first discharge valve (502), a coarse powder collecting cone (503), a powder selection chamber (504) and a fly ash separator (505), a connecting pipe (6) is fixedly connected to one side of the connecting pipe (6), a fine ash screening assembly (7) is fixedly connected to one side of the fine ash screening assembly (7), the fine ash screening assembly (7) comprises a fine powder bag dust collector (701), a motor box (702), a servo motor (703), an auger rod (704), A second discharge pipe (705) and a second discharge valve (706) are provided. One side of the fine powder bag dust collector (701) is fixedly connected to an air suction pipe (8). One end of the air suction pipe (8) is fixedly connected to a centrifugal fan (9). The top of the centrifugal fan (9) is fixedly connected to an air outlet pipe (10). The outer side of the air outlet pipe (10) is fixedly connected to a filter assembly (11). The filter assembly (11) includes a filter box (1101), two groups of filter frames (1102) and two groups of activated carbon filter layers (1103). The interior of the coarse powder collecting cone (503) is fixedly connected to a connecting plate (19). The interiors of the connecting pipe (6) and the connecting plate (19) are fixedly connected to a wear-resistant assembly (20). The wear-resistant assembly (20) includes a new manganese plate (2001) and a high-aluminum ceramic layer (2002).

2. The negative pressure separation device for fly ash from a power plant according to claim 1, characterized in that: The first discharge pipe (501) is fixedly connected to the top of the coarse ash bin (3), the outer side of the first discharge pipe (501) is fixedly connected to a first discharge valve (502), one end of the first discharge pipe (501) is fixedly connected to a coarse powder collecting cone (503), the top of the coarse powder collecting cone (503) is fixedly connected to a powder selection chamber (504), and the top of the powder selection chamber (504) is fixedly connected to a fly ash separator (505).

3. The negative pressure separation device for fly ash from a power plant according to claim 1, characterized in that: The fine powder bag dust collector (701) is fixedly connected to one side of the connecting pipe (6); the bottom of the fine powder bag dust collector (701) is fixedly connected to a motor box (702); the interior of the motor box (702) is fixedly connected to a servo motor (703); one end of the servo motor (703) is spline-connected to an auger rod (704); the bottom of the fine powder bag dust collector (701) is fixedly connected to a second discharge pipe (705); and the outer side of the second discharge pipe (705) is fixedly connected to a second discharge valve (706).

4. The negative pressure separation device for fly ash from a power plant according to claim 1, characterized in that: The filter box (1101) is fixedly connected to the outside of the air outlet pipe (10), and two groups of filter frames (1102) are slidably connected inside the filter box (1101), and the insides of the two groups of filter frames (1102) are fixedly connected to activated carbon filter layers (1103).

5. The negative pressure separation device for fly ash from a power plant according to claim 1, characterized in that: A step (12) is fixedly connected to one side of the base (1), and movable baffles (13) are provided on the surfaces of the fine ash bin (2), the coarse ash bin (3), and the raw ash bin (4).

6. The negative pressure separation device for fly ash from a power plant according to claim 2, characterized in that: An air inlet regulating pipe (14) is fixedly connected to one side of the fly ash separator (505), and an air inlet regulating valve (15) is fixedly connected to the outside of the air inlet regulating pipe (14).

7. The negative pressure separation device for fly ash from a power plant according to claim 6, characterized in that: Two groups of connecting pipes (16) are fixedly connected to one side of the air inlet regulating pipe (14), the outer sides of the two groups of connecting pipes (16) are fixedly connected to switching valves (17), and one end of the two groups of connecting pipes (16) is fixedly connected to a delivery pipeline (18).

8. The negative pressure separation device for fly ash from a power plant according to claim 1, characterized in that: The novel manganese plate (2001) is fixedly connected to the inner wall of the connecting plate (19), and the high-aluminum ceramic layer (2002) is fixedly connected to the interior of the connecting pipe (6).

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