A dust removal device for thermal power generation

Abstract

The utility model relates to a thermal power generation technology field, concretely relates to a dust collector for thermal power generation. Including the box, the box inside rotation is provided with the pivot, pivot one end is provided with the step motor for driving pivot rotation, the step motor fixed mounting is on the outside wall of box, pivot circumference side wall is fixedly connected with a plurality of guide frames in annular array, the guide frame inside sliding is provided with the outer frame, the outer frame inside fixed is provided with the filter screen. The utility model, after the water flow of the spray head sprays and settles the dust in the flue gas, uses the filter screen to filter the residual dust in the flue gas, in this process, the step motor drives a plurality of filter screens to rotate, rotates the filter screen with dust adhered to the surface to the below of the spray head, makes the water flow of the spray head to wash the dust on the filter screen, simultaneously makes the filter screen after washing to replace the work of filtering dust, to this end guarantees that the filter screen can long -term efficiently filters the residual dust in the flue gas.

Description

TECHNICAL FIELD

[0001] The utility model relates to thermal power generation technical field, concretely relates to a dust collector for thermal power generation. BACKGROUND

[0002] Thermal power generation needs to use the boiler, and the boiler is a kind of energy conversion equipment, and the energy input to the boiler has chemical energy in fuel, electric energy, the boiler exports steam, high-temperature water or organic heat carrier with certain heat energy, and the boiler includes pot and furnace two major parts, and most of the boilers are the way of burning coal at present, and coal-fired flue gas contains a large amount of dust, sulfide and nitrogen oxides, which is the main pollution source causing environmental pollution, with the enhancement of people's environmental protection consciousness, the purification standard of flue gas emission is rapidly improved, especially strict flue gas emission standard is formulated for coal-fired power generation boiler, so the discharged waste gas needs to be purified.

[0003] The utility model with publication number CN220582461U provides a dust collector for thermal power generation boiler, by making the slide bar repeatedly impact filter screen, makes filter screen vibrate, thereby the dust on filter screen is shaken off, and the water drop sprayed by spray head falls into the bottom of processing box inner chamber, and the filter screen is cleaned, effectively prevent filter screen from being blocked.

[0004] However, in the above-mentioned patent, the filter screen is close to the water flow sprayed by the spray head, and the water flow is easy to splash on the filter screen, resulting in high humidity of the dust attached to the filter screen. The adhesion of high humidity dust on the filter screen is stronger, so that the effect of the filter screen vibrating to shake off the dust is poor. The water flow sprayed by the spray head cannot directly flush the filter screen, so that the mesh of the filter screen is still easy to be blocked by dust. In view of this, we propose a dust collector for thermal power generation. SUMMARY

[0005] The utility model aims at providing a dust collector for thermal power generation to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides a dust collector for thermal power generation, including the box, the box inside rotation is provided with the pivot, pivot one end is provided for driving pivot rotation's step motor, step motor fixed mounting is in the outside wall of the box, pivot circumference side wall annular array fixedly connected with a plurality of guide frame, the guide frame inside slide is provided with the outer frame, the outer frame inside fixedly provided with the filter screen, the top surface and the bottom surface between the box inside fixedly connected with the baffle, the middle section of baffle is provided with semicircle board, when the outer frame rotates to the inside of semicircle board, the lateral wall of outer frame and semicircle board slide contact, the opposite sides of the box are fixedly connected with the smoke inlet pipe and the air pump respectively, the baffle and filter screen are arranged between the smoke inlet pipe and the air pump, the air pump is located in the one side fixed setting of the box and is provided with the communicating pipe, the other end of communicating pipe and semicircle board are communicated, and the side away from the air pump of baffle is provided with the spray assembly, and the spray assembly is arranged above the filter screen.

[0007] As a further improvement of the technical solution, the two sides of the guide frame are in sliding contact with the inner wall of the box, and the semicircle plate and the shaft are coaxially arranged.

[0008] As a further improvement of the technical solution, the spray assembly comprises a tee pipe fixedly arranged on the top surface of the box, the upper end of the tee pipe penetrates through the upper side wall of the box and extends out, and the other two ends of the tee pipe are fixedly connected with a flow divider box, a plurality of spray heads are fixedly connected in transverse array on the bottom of the flow divider box, and when the shaft drives the plurality of filter screens to rotate, the plurality of filter screens pass below a group of spray heads close to the baffle in circulation.

[0009] As a further improvement of the technical solution, a plurality of springs are fixedly connected in transverse array between the end of the outer frame close to the shaft and the inner wall of the guide frame, two arc-shaped strips are fixedly connected symmetrically on the inner wall of the box, and a plurality of round head blocks are fixedly connected in array on the inner arc surface of the arc-shaped strips, and when the shaft drives the outer frame to rotate, the end of the outer frame away from the shaft sequentially contacts the round heads of the plurality of round head blocks.

[0010] As a further improvement of the technical solution, the connection between the communicating pipe and the baffle is located on the upper half of the semicircle plate, a purification cavity is formed between the two outer frames and the inner wall of the semicircle plate, and the communicating pipe and the purification cavity are connected.

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] 1. The dust removal device for thermal power generation, after the water flow of the spray head is used to settle dust in flue gas, the residual dust in the flue gas is filtered by the filter screen, in the process, the stepping motor drives a plurality of filter screens to rotate, the filter screen with dust attached to the surface is rotated to the lower side of the spray head, the water flow of the spray head is used to clean the dust on the filter screen, and the cleaned filter screen is used to replace the dust filtering work, so that the filter screen can long-term and high-efficiently filter the residual dust in the flue gas.

[0013] 2. The dust removal device for thermal power generation, when the stepping motor drives a plurality of outer frames and filter screens to rotate, the outer frame is in contact with the round head of a plurality of round head blocks in turn, so that the filter screen reciprocating vibrates while rotating, the difficulty of removing the dust on the surface of the filter screen by the water flow is reduced, and the cleaning effect of the water flow on the filter screen is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the overall structure of the utility model;

[0015] Figure 2 It is a sectional view of the overall structure of the utility model;

[0016] Figure 3 It is a schematic view of the structure of the guide frame of the utility model;

[0017] Figure 4 It is a schematic view of the structure of the spray assembly of the utility model;

[0018] Figure 5 It is a sectional view of the guide frame of the utility model.

[0019] The meanings of various reference numerals in the drawing are as follows:

[0020] 1, box; 11, smoke inlet pipe; 12, arc-shaped strip; 13, round head block;

[0021] 2, rotating shaft; 21, guide frame; 22, outer frame; 23, filter screen; 24, spring; 25, stepping motor;

[0022] 3, partition; 31, semicircular plate;

[0023] 4, air pump; 41, communication pipe;

[0024] 5, spray assembly; 51, three-way pipe; 52, shunt box; 53, spray head. DETAILED DESCRIPTION

[0025] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. Embodiments

[0026] Please refer to Figures 1-2 The present embodiment aims to provide a dust removal device for thermal power generation, which comprises a box body 1, a partition plate 3 fixedly connected between the top surface and the bottom surface inside the box body 1, a semicircular plate 31 arranged at the middle section of the partition plate 3, an inlet smoke pipe 11 and an air pump 4 fixedly connected to the opposite sides of the box body 1, wherein one end of the inlet smoke pipe 11 located outside the box body 1 is in communication with a boiler exhaust pipe, and one side of the air pump 4 located inside the box body 1 is fixedly provided with a communication pipe 41, and the other end of the communication pipe 41 is in communication with the semicircular plate 31. After the air pump 4 is started, the air inside the box body 1 is extracted through the communication pipe 41, so that the flue gas discharged from the boiler exhaust pipe is supplemented into the inside of the box body 1 through the inlet smoke pipe 11, so that the flue gas flows through the inside of the box body 1. In order to carry out dust removal treatment on the flue gas inside the box body 1, a spraying assembly 5 is arranged on the side of the partition plate 3 away from the air pump 4, which sprays water flow into the flowing flue gas, and the dust in the flue gas is settled by the water flow. The bottom of the box body 1 is fixedly provided with a drain pipe, and the water accumulated on the bottom surface inside the box body 1 after settling the dust is discharged out of the box body 1 through the drain pipe. The structure of the spraying assembly 5 is refined below, and the spraying assembly 5 comprises a three-way pipe 51 fixedly arranged on the top surface inside the box body 1, the upper end of the three-way pipe 51 penetrates through the upper side wall of the box body 1 and extends out, one end of the three-way pipe 51 extending out of the box body 1 is in communication with a water pump, and the other two ends of the three-way pipe 51 are both fixedly connected with a shunt box 52, the bottom of the shunt box 52 is fixedly connected with a plurality of spray heads 53 arranged in an array in the transverse direction, when the water pump pumps water into the inside of the three-way pipe 51, the water is sprayed downward to form a water flow through the plurality of spray heads 53, and the water flow and the flue gas are mixed to settle the dust, so as to carry out dust removal treatment on the flue gas and improve the cleanliness of the flue gas discharged out of the box body 1. Figure 4

[0027] ​After the water flow settles most of the dust in the flue gas, in order to further remove the dust in the flue gas, the rotating shaft 2 is arranged inside the box 1, the rotating shaft 2 is fixedly connected with a plurality of guide frames 21 arranged in an annular array on the circumferential side wall, the two sides of the guide frame 21 are in sliding contact with the inner wall of the box 1, the semicircular plate 31 is coaxially arranged with the rotating shaft 2, the guide frame 21 is slidably arranged with an outer frame 22, the outer frame 22 slides towards or away from the rotating shaft 2, the outer frame 22 is fixedly arranged with a filter screen 23 inside, when the outer frame 22 rotates to the inside of the semicircular plate 31, the side wall of the outer frame 22 is in sliding contact with the semicircular plate 31, the baffle 3 and the filter screen 23 are arranged between the smoke inlet pipe 11 and the air pump 4, the connection between the connecting pipe 41 and the baffle 3 is located on the upper half of the semicircular plate 31, and the inner wall of the semicircular plate 31 between the two outer frames 22 forms a purification cavity, the connecting pipe 41 and the inside of the purification cavity are connected, the air pump 4 is started to draw out the air inside the purification cavity through the connecting pipe 41, so that the flue gas entering the box 1 is supplemented to the inside of the purification cavity after passing through the mesh of the filter screen 23, and the filter screen 23 filters out the residual dust in the flue gas in the process, thereby improving the dust removal effect of the device on the flue gas.

[0028] When the filter screen 23 filters out the dust in the flue gas, the filtered dust will adhere to the filter screen 23, and when the dust accumulates on the filter screen 23, the dust will easily block the mesh of the filter screen 23, causing the efficiency of the filter screen 23 to filter the flue gas to decrease. In order to solve this problem, a stepping motor 25 for driving the rotating shaft 2 to rotate is arranged at one end of the rotating shaft 2, and the stepping motor 25 is fixedly installed on the outer side wall of the box 1, and the spraying assembly 5 is arranged above the filter screen 23. When the rotating shaft 2 drives a plurality of filter screens 23 to rotate, the plurality of filter screens 23 pass under a group of nozzles 53 close to the baffle 3 in a cycle. The stepping motor 25 drives the rotating shaft 2 to rotate after being started, and the rotating shaft 2 drives a plurality of guide frames 21, outer frames 22 and filter screens 23 to rotate synchronously. When the filter screen 23 with dust adhering to the surface rotates to the lower side of the nozzle 53, the water flow sprayed by the nozzle 53 washes the dust on the filter screen 23 away, thereby avoiding the mesh of the filter screen 23 from being blocked by the dust. During the process of the stepping motor 25 driving a plurality of outer frames 22 to rotate, there is always at least one purification cavity formed between the inner wall of the semicircular plate 31 and two outer frames 22. The air pump 4 draws out the air inside the purification cavity through the connecting pipe 41 after being started, and the flue gas entering the inside of the purification cavity must pass through the mesh of the filter screen 23, thereby playing the role of the filter screen 23 in filtering the dust in the flue gas.

[0029] When the water flow sprayed by the nozzle 53 washes the surface of the filter screen 23, in order to improve the effect of the water flow in washing the dust on the surface of the filter screen 23, with reference to Figure 5 A plurality of springs 24 are fixedly connected in a transverse array between the end of the outer frame 22 close to the rotating shaft 2 and the inner wall of the guide frame 21, and with reference to Figure 3Two arc-shaped strips 12 are symmetrically and fixedly connected to the inner wall of the box body 1, and the two arc-shaped strips 12 are coaxially arranged with the rotating shaft 2, the inner arc surface of the arc-shaped strip 12 is fixedly connected with a plurality of round head blocks 13, when the rotating shaft 2 drives the outer frame 22 to rotate, the end of the outer frame 22 away from the rotating shaft 2 is in turn contacted with the round head of the plurality of round head blocks 13, when the outer frame 22 contacts the round head block 13, the round head block 13 pushes the outer frame 22 and the filter screen 23 to be close to the rotating shaft 2, so that the spring 24 is elastically contracted, when the outer frame 22 is separated from the round head block 13, the spring 24 is rebounded to push the outer frame 22 and the filter screen 23 to move to reset, therefore, when the outer frame 22 is in turn contacted with the round head of the plurality of round head blocks 13, the filter screen 23 is pushed to be close to the rotating shaft 2 by the round head block 13, after the filter screen 23 and the round head block 13 are separated, the filter screen 23 is pushed away from the rotating shaft 2 by the spring 24, so as to make the filter screen 23 move to be close to and away from the rotating shaft 2 in the process of rotation, so as to form the reciprocating vibration effect, when the filter screen 23 reciprocates, the dust on the surface of the filter screen 23 is shaken off, the difficulty of the water flow to wash off the dust on the surface of the filter screen 23 is reduced, the cleaning effect of the water flow on the filter screen 23 is improved, and it is guaranteed that the filter screen 23 can long-term and efficiently filter the residual dust in the flue gas.

[0030] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by the person skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and range of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A dust removal device for thermal power generation, comprising a box (1), characterized in that: The box (1) is internally rotatably provided with a rotating shaft (2), one end of the rotating shaft (2) is provided with a stepping motor (25) for driving the rotating shaft (2) to rotate, the stepping motor (25) is fixedly installed on the outer side wall of the box (1), a plurality of guide frames (21) are fixedly connected in annular array on the circumferential side wall of the rotating shaft (2), the guide frame (21) is internally slidably provided with an outer frame (22), the outer frame (22) is internally fixedly provided with a filter screen (23), the inner top surface and the inner bottom surface of the box (1) are fixedly connected with a partition plate (3), the middle section of the partition plate (3) is provided with a semicircular plate (31), when the outer frame (22) is rotated into the semicircular plate (31), the side wall of the outer frame (22) is in sliding contact with the semicircular plate (31), the opposite sides of the box (1) are respectively fixedly connected with a smoke inlet pipe (11) and an air pump (4), the partition plate (3) and the filter screen (23) are arranged between the smoke inlet pipe (11) and the air pump (4), the air pump (4) is fixedly provided with a communication pipe (41) on one side in the box (1), the other end of the communication pipe (41) is communicated with the semicircular plate (31), the side of the partition plate (3) away from the air pump (4) is provided with a spraying assembly (5), and the spraying assembly (5) is arranged above the filter screen (23).

2. The dust collector for thermal power generation according to claim 1, characterized by: The two sides of the guide frame (21) are in sliding contact with the inner wall of the box (1), and the semicircular plate (31) and the rotating shaft (2) are coaxially arranged.

3. The dust collector for thermal power generation according to claim 1, characterized by: The spraying assembly (5) comprises a three-way pipe (51) fixedly arranged on the inner top surface of the box (1), the upper end of the three-way pipe (51) penetrates through the upper side wall of the box (1) and extends out, and the other two ends of the three-way pipe (51) are fixedly connected with a shunt box (52), the bottom of the shunt box (52) is fixedly connected with a plurality of spray heads (53) in transverse array, when the rotating shaft (2) drives the plurality of filter screens (23) to rotate, the plurality of filter screens (23) circulate from below a group of spray heads (53) close to the partition plate (3).

4. The dust collector for thermal power generation according to claim 1, characterized by: A plurality of springs (24) are fixedly connected in transverse array between the end of the outer frame (22) close to the rotating shaft (2) and the inner wall of the guide frame (21), two arc-shaped strips (12) are fixedly connected on the inner wall of the box (1) in symmetry, a plurality of round head blocks (13) are fixedly connected in array on the inner arc surface of the arc-shaped strip (12), when the rotating shaft (2) drives the outer frame (22) to rotate, the end of the outer frame (22) away from the rotating shaft (2) sequentially contacts the round heads of the plurality of round head blocks (13).

5. The dust collector for thermal power generation according to claim 1, characterized in that: The connection between the communication pipe (41) and the partition plate (3) is located on the upper half of the semicircular plate (31), a purification cavity is surrounded between the two outer frames (22) and the inner wall of the semicircular plate (31), and the inside of the communication pipe (41) and the purification cavity are communicated.

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