Drum-type pulsating dust raising device suitable for vertical flue of boiler

Abstract

The invention relates to the technical field of flue dust removal, in particular to a drum-type pulsating dust raising device suitable for a vertical flue of a boiler, which comprises a rotary dust removal mechanism, a dust removal mechanism, a dust removal mechanism and a dust removal mechanism, the driving part is used for driving the rotary ash removal mechanism to rotate; the air inflation mechanism is used for pumping air into the air channel and discharging the air from the exhaust port, after the air inflation mechanism pumps the air into the air channel, the air is blown out from the exhaust port, the blowing-out direction of the exhaust port is changed in cooperation with rotation of the rotating body, then accumulated dust is blown, the dust is discharged along with flue gas, and the air inflation mechanism can adopt an intermittent air supply mode; the internal dust can be better scattered and more uniformly distributed by changing the blowing pressure of the exhaust port, the dust can be pushed by the rotation of the rotating body, the dust is prevented from being deposited and accumulated, and the cleaning time of aligning the exhaust port to each area of the flue can be adjusted by adjusting the rotating speed of the rotating body.

Description

Technical Field

[0001] The present invention relates to the technical field of flue dust removal, in particular to a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler. Background Art

[0002] At the vertical flue of the boiler, due to the existence of corners, after long-term use, ash accumulation will occur at the corners, resulting in a reduction in the channel area of the flue, an increase in the gas flow rate, an increase in the mass of the ash accumulation area, and an easy occurrence of collapse.

[0003] Although the dust-raising device can loosen and blow away the ash accumulation in the flue through the pulsating action of the air flow, due to the large amount of soot contained in the flue gas and the possible complex structure inside the flue, it is difficult to completely remove the ash accumulation in some areas, ultimately affecting the normal operation of the equipment.

[0004] Therefore, a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler is proposed. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that it is difficult to remove the ash accumulation at the corners by means of pulsating dust raising.

[0006] The above technical problem is solved by the following technical solutions: The present invention provides a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler, including

[0007] A rotary ash cleaning mechanism, which includes a rotating body, and a gas passage and an exhaust port are provided inside the rotating body;

[0008] A driving member for driving the rotary ash cleaning mechanism to rotate;

[0009] An air inflation mechanism for pumping gas into the gas passage and discharging it from the exhaust port.

[0010] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: Brushes are provided on the rotating body.

[0011] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: The brush is a flexible pipe, and one end of the flexible pipe is connected to the exhaust port.

[0012] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: Scrapers are provided on the rotating body.

[0013] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: A plurality of scrapers and a plurality of brushes are evenly provided on the rotating body;

[0014] A number of the scraper plates and a number of the brushes are distributed in a staggered manner.

[0015] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: a large pulley is provided on the rotating body;

[0016] The driving member includes a driving motor, a small pulley provided at the output end of the driving motor, and a transmission belt provided on the small pulley;

[0017] The transmission belt is connected to the large pulley.

[0018] In a preferred embodiment of the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler according to the present invention: a rotary shaft seal is provided at one end of the rotating body, and an air delivery pipe is connected to the rotating body through the rotary shaft seal;

[0019] One end of the air delivery pipe is connected to the air inflation end of the air inflation mechanism.

[0020] Based on the above technical problems, the present invention also proposes a pulsating dust-raising control method, which is applied to the drum-type pulsating dust-raising device applicable to the vertical flue of a boiler, and includes,

[0021] Detect the current ash accumulation condition in the boiler flue;

[0022] Adjust the output of the driving member according to the ash accumulation condition in the boiler flue;

[0023] Adjust the air pressure and gas volume of the gas source provided by the air inflation mechanism according to the ash accumulation condition in the boiler flue.

[0024] In a preferred embodiment of the pulsating dust-raising control method according to the present invention: judge the ash accumulation state in the boiler flue according to the load of the driving member;

[0025] If the load of the driving member rises, the ash accumulation amount increases;

[0026] If the load of the driving member decreases, the ash accumulation amount decreases;

[0027] When the ash accumulation amount in the boiler flue rises, increase the output of the driving member and increase the air pressure and gas volume of the air inflation mechanism;

[0028] When the ash accumulation amount in the boiler flue decreases, reduce the output of the driving member and reduce the air pressure and gas volume of the air inflation mechanism.

[0029] In a preferred embodiment of the pulsating dust-raising control method according to the present invention: the air inflation mechanism supplies gas in an intermittent manner.

[0030] The beneficial effects of the present invention are as follows: After the inflation mechanism pumps gas into the gas passage and blows it out from the exhaust port, in cooperation with the rotation of the rotating body, the blowing direction of the exhaust port is changed, thereby blowing the accumulated dust and discharging it along with the flue gas. The inflation mechanism can adopt an intermittent gas supply method. By changing the pressure when blowing air from the exhaust port, the dust inside can be better dispersed and distributed more evenly. The rotation of the rotating body can also push the dust to avoid sedimentation and accumulation of the dust. By adjusting the rotation speed of the rotating body, the cleaning time for the exhaust port to align with each area of the flue can be adjusted. Brief Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention.

[0032] Figure 1 Shows the overall structural schematic diagram of a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler.

[0033] Figure 2 Shows the front view of a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler.

[0034] Figure 3 Shows the internal structural schematic diagram of the rotary dust cleaning mechanism of a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler.

[0035] Figure 4 Shows the structural schematic diagram of the rotating body of a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler.

[0036] Figure 5 Shows the sectional structural schematic diagram of the rotating body of a drum-type pulsating dust-raising device applicable to the vertical flue of a boiler.

[0037] In the figure:

[0038] 1, rotary dust cleaning mechanism; 11, rotating body; 111, gas passage; 112, exhaust port; 113, scraper; 114, brush; 12, large pulley; 13, rotary shaft seal; 14, gas pipeline;

[0039] 2, driving member; 21, driving motor; 22, small pulley; 23, transmission belt;

[0040] 3, inflation mechanism. Detailed Embodiments

[0041] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the drawings.

[0042] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention, but these terms may vary according to the intention of a person of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in this case, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as a general description based on the meaning of the terms and the present invention.

[0043] Reference Figures 1 to 5 The present embodiment provides a drum-type pulsating dust removal device suitable for a vertical flue of a boiler, including a rotary dust cleaning mechanism 1, which includes a rotating body 11, and a gas channel 111 and an exhaust port 112 are provided in the rotating body 11; a driving member 2, which is used to drive the rotary dust cleaning mechanism 1 to rotate; and an inflation mechanism 3, which is used to pump gas into the gas channel 111 and discharge it from the exhaust port 112.

[0044] A plurality of exhaust ports 112 are evenly arranged on the rotating body 11 .

[0045] When in use, the inflation mechanism 3 pumps gas into the gas channel 111 and blows it out from the exhaust port 112. In conjunction with the rotation of the rotating body 11, the blowing direction of the exhaust port 112 is changed, and the accumulated dust is blown out with the smoke. The inflation mechanism 3 can adopt an intermittent air supply method, and by changing the pressure when blowing air from the exhaust port 112, the internal dust can be better broken up and distributed more evenly. The rotation of the rotating body 11 can also push the dust to avoid dust precipitation and accumulation. By adjusting the rotation speed of the rotating body 11, the cleaning time of the exhaust port 112 to each area of ​​the flue can be adjusted.

[0046] Reference Figures 2 to 5 As an optional embodiment: a brush 114 is provided on the rotating body 11.

[0047] The brush 114 is a hose, one end of which is connected to the exhaust port 112 .

[0048] When the rotating body 11 rotates, the brush 114 can brush the dust accumulated in the flue, making it convenient to blow away the dust.

[0049] It should be noted that since the brush 114 is a flexible hose and is connected to the exhaust port 112, the gas provided by the inflation mechanism 3 will be transported and discharged through the flexible hose. Due to its own weight, the flexible hose will bend when arranged on the outer wall of the rotating body 11. During the rotation process, due to the different output forces provided by the driving member 2, the rotation speed of the flexible hose is different, and the centrifugal force is different. Therefore, the working radius of the flexible hose will change. When the dust accumulation is relatively serious, the driving member 2 rotates at a high speed, which can increase the working area of the flexible hose and the force for washing the dust. Moreover, since the gas is ejected through the flexible hose, the dust after being shaken off can be dispersed, facilitating the raising of the accumulated dust and enabling it to be discharged along with the flue gas. When the dust accumulation is excessive, by increasing the gas output and the air pressure, the flexible hose can be straightened, improving its hardness and working radius, thereby facilitating the cleaning of the dust with strong adhesion and further enhancing the dust raising effect.

[0050] Referring to Figures 2 to 5 , as an alternative embodiment: a scraper 113 is provided on the rotating body 11. When the rotating body 11 rotates, the scraper 113 can raise the accumulated dust and at the same time increase the gas flow rate inside, facilitating the discharge of the dust.

[0051] Referring to Figures 2 to 5 , as an alternative embodiment: a plurality of scrapers 113 and a plurality of brushes 114 are evenly provided on the rotating body 11; the plurality of scrapers 113 and the plurality of brushes 114 are all arranged in a staggered manner. The staggered arrangement can enable the gas to pass through the scraper 113 more easily, making the blowing more uniform, facilitating the flow of dust particles, and at the same time reducing the resistance when the rotating body 11 rotates.

[0052] Referring to Figures 2 to 5 , as an alternative embodiment: a large pulley 12 is provided on the rotating body 11; the driving member 2 includes a driving motor 21, a small pulley 22 provided at the output end of the driving motor 21, and a transmission belt 23 provided on the small pulley 22; the transmission belt 23 is connected to the large pulley 12.

[0053] The rotation of the small pulley 22 is caused by the operation of the driving motor 21, and then the large pulley 12 is driven to rotate through the transmission belt 23, enabling the rotating body 11 to rotate and work.

[0054] It should be noted that when the driving motor 21 is working, if the dust accumulation around the rotary dust cleaning mechanism 1 is less, the force required for rotation decreases, so the current of the driving motor 21 will be lower. If the dust accumulated in the flue is excessive, the current required when the driving motor 21 is working increases. The dust accumulation state inside the flue can be judged by this method, and the device can be controlled to perform dust cleaning operations based on this.

[0055] Referring to Figures 2 to 5, as an alternative embodiment: One end of the rotating body 11 is provided with a rotary shaft seal 13, and the rotating body 11 is connected to an air delivery pipe 14 through the rotary shaft seal 13; One end of the air delivery pipe 14 is connected to the inflation end of the inflation mechanism 3.

[0056] The provision of the rotary shaft seal 13 enables the air delivery pipe 14 and the rotating body 11 to rotate, and does not affect the gas supply. The inflation mechanism 3 can be an air pump.

[0057] During use, an intermittent air supply method can be adopted to make the hose in a straightened or flaccid state. By switching between the straightened state and the flaccid state, the dust cleaning effect can be further improved, and the dust cleaning and soot blowing parts can be changed, increasing the working area.

[0058] This embodiment provides a pulsating dust control method, which is applied to a drum-type pulsating dust device suitable for the vertical flue of a boiler, including,

[0059] Detect the current ash accumulation condition in the boiler flue;

[0060] Adjust the output of the driving member 2 according to the ash accumulation condition in the boiler flue;

[0061] Adjust the air pressure and gas volume of the gas source provided by the inflation mechanism 3 according to the ash accumulation condition in the boiler flue.

[0062] As an alternative embodiment: Judge the ash accumulation state in the boiler flue according to the load of the driving member 2;

[0063] If the load of the driving member 2 rises, the ash accumulation amount increases;

[0064] If the load of the driving member 2 decreases, the ash accumulation amount decreases;

[0065] If the ash accumulation amount in the boiler flue rises, then increase the output of the driving member 2 and increase the air pressure and gas volume of the inflation mechanism 3;

[0066] If the ash accumulation amount in the boiler flue decreases, then reduce the output of the driving member 2 and reduce the air pressure and gas volume of the inflation mechanism 3.

[0067] As an alternative embodiment: The inflation mechanism 3 supplies gas in an intermittent manner.

[0068] Finally, it should be pointed out that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A drum-type pulsating dust removal device suitable for a vertical flue of a boiler, characterized in that: include, A rotary dust cleaning mechanism (1) comprises a rotating body (11), wherein a gas passage (111) and an exhaust port (112) are provided in the rotating body (11); A driving member (2) for driving the rotary dust cleaning mechanism (1) to rotate; The gas charging mechanism (3) is used to pump gas into the gas channel (111) and discharge the gas from the gas outlet (112).

2. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 1 is characterized in that: The rotating body (11) is provided with a brush (114).

3. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 2 is characterized in that: The brush (114) is a hose, one end of which is connected to the exhaust port (112).

4. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 2 or 3, characterized in that: The rotating body (11) is provided with a scraper (113).

5. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 4 is characterized in that: A plurality of scrapers (113) and a plurality of brushes (114) are evenly arranged on the rotating body (11); The plurality of scrapers (113) and the plurality of brushes (114) are distributed in a staggered manner.

6. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 1, 2, 3 or 5, characterized in that: The rotating body (11) is provided with a large pulley (12); The driving member (2) comprises a driving motor (21), a small belt pulley (22) arranged at the output end of the driving motor (21), and a transmission belt (23) arranged on the small belt pulley (22); The transmission belt (23) is connected to the large pulley (12).

7. The drum-type pulsating dust removal device applicable to the vertical flue of a boiler according to claim 1, 2, 3 or 5, characterized in that: A rotary shaft seal (13) is provided at one end of the rotating body (11), and the rotating body (11) is connected to an air delivery pipe (14) via the rotary shaft seal (13); One end of the air delivery pipe (14) is connected to the inflation end of the inflation mechanism (3).

8. A pulsating dust control method, applied to the drum-type pulsating dust device for a vertical flue of a boiler as claimed in any one of claims 1 to 7, characterized in that: include, Detect the current boiler flue ash accumulation condition; adjusting the output of the driving member (2) according to the ash accumulation condition of the boiler flue; The gas pressure and gas volume of the gas source provided by the charging mechanism (3) are adjusted according to the ash accumulation condition of the boiler flue.

9. The pulsating dust control method according to claim 8, characterized in that: Determining the ash accumulation state of the boiler flue according to the load of the driving member (2); If the load of the driving member (2) increases, the amount of dust accumulation increases; If the load on the driving member (2) is reduced, the amount of dust accumulation will decrease; If the amount of ash deposited in the boiler flue increases, the output of the driving member (2) is increased, and the air pressure and gas volume of the charging mechanism (3) are increased; If the amount of ash deposited in the boiler flue decreases, the output of the driving member (2) is reduced, and the air pressure and gas volume of the charging mechanism (3) are reduced.

10. The pulsating dust control method according to claim 9, characterized in that: The inflation mechanism (3) adopts intermittent operation to supply air.

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