Dust collector structure and use method based on positive and negative pressure integrated pneumatic ash conveying system

Abstract

The present invention discloses a dust collector structure and a method of using a positive and negative pressure integrated pneumatic ash conveying system, comprising a base arranged in a boiler tube bank, two first support plates sliding along the length direction of the base arranged above the base, and a cleaning roller for contacting the inner wall of the boiler tube bank arranged between the two first support plates. The motor drives the screw to rotate, and the rotation limit of the horizontal plate and the sliding of the slider in the slide groove drive the first support plate to follow the movement, so that the cleaning roller contacts the inner wall of the boiler tube bank, thereby removing the ash stains attached to the tube bank, and after the cleaning roller is cleaned, the belt drives the first absorbent cotton to rotate, and absorbs the ash stains and moisture on the outer wall of the cleaning roller. After absorption, the scraper scrapes the moisture and ash stains on the first absorbent cotton to the second absorbent cotton, and the cleaning roller can effectively remove the ash stains in the tube bank, ensuring the subsequent smoke exhaust efficiency of the tube bank.

Description

Technical Field

[0001] The present invention specifically relates to a dust collector structure and a use method based on a positive and negative pressure integrated pneumatic ash conveying system. Background Art

[0002] The ash and slag emitted by the boilers of coal-fired power plants have been developed and utilized as a resource. Therefore, the dry ash of the boiler flue gas dust collector is generally removed by pneumatic ash removal. As the capacity of the single generator set continues to increase and the transportation distance increases, the existing pneumatic ash removal system is difficult to meet the requirements of economy, practicality, reliability and energy saving. The main problems are as follows: the ash removal pipeline adopts the commonly used pneumatic ash removal, which cannot completely remove the dust attached to the ash removal pipeline. The long-term accumulation will block the dust removal pipeline and affect the boiler emission. Summary of the invention

[0003] The purpose of the present invention is to provide a dust collector structure and a use method based on a positive and negative pressure integrated pneumatic ash conveying system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a dust collector structure based on a positive and negative pressure integrated pneumatic ash conveying system, comprising a base arranged in a boiler tube row, two first support plates sliding along the length direction of the base are arranged above the base, a cleaning roller for contacting with the inner wall of the boiler tube row is arranged between the two first support plates, a power component for driving the cleaning roller to move axially is arranged at one end of the base, and a recovery component for scraping off ash stains on the outside of the cleaning roller is arranged at the other end of the base.

[0005] Preferably, the power assembly includes a vertical plate installed on the upper surface of the base, a supporting plate is provided on the outer side of the vertical plate, a motor is installed on the supporting plate, the power output end of the motor passes through the vertical plate and is connected to a screw rod, the end of the screw rod away from the motor is connected to a support block, and the support block is installed on the base.

[0006] Preferably, two fixed blocks are provided on the upper surface of the base, a slide groove is opened in the fixed block, a slider is axially slid in the slide groove, the slider is provided in plurality, the first support plate is installed on the outside of the slider, and a groove is opened in the first support plate, a cross plate fixed on the screw rod is inserted into the groove.

[0007] Preferably, a rotating shaft for driving the cleaning roller to rotate is installed on the opposite surfaces of the two first support plates.

[0008] Preferably, the recovery component includes a positioning block installed in the slide groove, the positioning blocks are set to four, and the outer sides of the four positioning blocks are respectively connected to a second support plate and a third support plate that are symmetrical in pairs, a fixed pulley is arranged between the two second support plates, and a belt is arranged on the outer side of the pulley.

[0009] Preferably, a first absorbent cotton is disposed on the outer side of the belt, which is in contact with the cleaning roller and can absorb dust stains attached to the surface of the cleaning roller.

[0010] Preferably, a shell is arranged between the two third support plates, a second absorbent cotton is arranged in the shell, and a scraper abutting against the first absorbent cotton is arranged on a side of the shell close to the first absorbent cotton.

[0011] Preferably, an air pump is provided on the upper surface of the shell, a push rod is connected to the power output end of the air pump, the push rod extends into the shell and is connected to a pressure plate, and the pressure plate abuts against the second absorbent cotton. Preferably, a water outlet pipe is connected to the outside of the shell, and the end of the water outlet pipe away from the shell is connected to a water collection box.

[0012] The method for using the dust collector structure based on the positive and negative pressure integrated pneumatic ash conveying system includes the following steps:

[0013] Step A, when the boiler is finished working, use the instrument to install the base in the boiler tube bank, start the motor, and the motor power output end drives the screw to rotate, and as the screw rotates, the cross plate rotates;

[0014] Step B, the horizontal plate is rotationally limited by the two first support plates, and the slider slides in the slide groove, thereby driving the two first support plates to move, so that the cleaning roller abuts against the inner wall of the boiler tube bank, and the ash stains attached to the tube bank are cleaned;

[0015] Step C, when the cleaning roller finishes cleaning, the slider is slid to the side of the positioning block, and the cleaning roller is brought into contact with the first absorbent cotton, the pulley is rotated, and the belt is driven to rotate, so that the first absorbent cotton rotates successively to absorb the water stains and dust stains attached to the cleaning roller;

[0016] Step D, as the belt rotates, the outer wall of the first absorbent cotton abuts against the scraper, so that the water stains and ash stains fall onto the second absorbent cotton through the scraper, and the air pump is started. The power output end of the air pump drives the push rod to push, driving the pressing plate to squeeze the second absorbent cotton, so that the water therein is squeezed out;

[0017] Step E: Finally, the water squeezed out of the second absorbent quilt in the shell flows into the water collecting box through the water outlet pipe.

[0018] The technical effects and advantages of the present invention: The dust collector structure and use method based on the positive and negative pressure integrated pneumatic ash conveying system of the present invention drives the screw to rotate through a motor, and the rotation limit of the cross plate and the sliding of the slider in the slide groove drive the first support plate to follow the movement, so that the cleaning roller contacts the inner wall of the boiler tube row, thereby removing the ash stains attached to the tube row, and after the cleaning roller is cleaned, the first absorbent cotton is driven by a belt to rotate to absorb the ash stains and moisture on the outer wall of the cleaning roller. After absorption, the moisture and ash stains on the first absorbent cotton are scraped off to the second absorbent cotton through a scraper, and the ash stains in the tube row can be effectively removed by the cleaning roller to ensure the subsequent smoke exhaust efficiency of the tube row. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the cleaning roller of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the water collecting box of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the water outlet pipe of the present invention;

[0023] Figure 5 It is a schematic structural diagram of the second water-absorbent cotton of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the scraper of the present invention.

[0025] In the figure: 1. base; 2. fixing block; 3. slide; 4. motor; 5. bearing plate; 6. vertical plate; 7. screw; 8. cleaning roller; 9. slider; 10. first absorbent cotton; 11. horizontal plate; 12. first support plate; 13. rotating shaft; 14. second support plate; 15. belt; 16. pulley; 17. water outlet pipe; 18. water collecting box; 19. support block; 20. third support plate; 21. hydraulic pump; 22. housing; 23. second absorbent cotton; 24. push rod; 25. pressure plate; 26. scraper. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] In order to facilitate the removal of ash stains in the boiler tube row, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, it includes a base 1 arranged in the tube bank of the boiler. The base 1 can be installed in the tube bank of the boiler by fixing bolts, and the installation method is simple. Two first support plates 12 are arranged above the base 1 to slide along the length direction of the base 1. The first support plates 12 are connected to the slider 9. As the slider 9 slides, the two first support plates 12 can be driven to move. A cleaning roller 8 for contacting with the inner wall of the boiler tube bank is arranged between the two first support plates 12. As the first support plate 12 moves, the cleaning roller 8 can be driven to follow the movement, so that the cleaning roller 8 is in contact with the inside of the tube bank, and the dust stains attached to the cleaning roller 8 are removed. Before cleaning the inside of the tube bank, it is necessary to spray enough detergent on the surface of the cleaning roller 8. A power component for driving the cleaning roller 8 to move axially is arranged at one end of the base 1. The screw 7 is driven to rotate by the motor 4. The first support plate 12 is driven to follow the movement of the rotation limit of the cross plate 11 and the sliding of the slider 9 in the slide groove 3. The other end of the base 1 is provided with a recovery component for scraping off the dust stains on the outer side of the cleaning roller 8. The first absorbent cotton 10 is driven to rotate by the belt 15 to absorb the dust stains and moisture on the outer wall of the cleaning roller 8. After absorption, the moisture and dust stains on the first absorbent cotton 10 are scraped off to the second absorbent cotton 23 by the scraper 26, so that the cleaning agent sprayed on the cleaning roller 8 can be recovered to avoid dripping into the pipeline.

[0028] In order to ensure the cleanliness of the cleaning roller 8, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the power assembly includes a vertical plate 6 installed on the upper surface of the base 1, and the screw 7 is supported by the vertical plate 6 to improve the stability of the screw 7. A bearing plate 5 is arranged on the outer side of the vertical plate 6, and a motor 4 is installed on the bearing plate 5. The motor 4 is a prior art and is not described here. The power output end of the motor 4 passes through the vertical plate 6 and is connected to the screw 7. The end of the screw 7 away from the motor 4 is connected to a support block 19, and the support block 19 is installed on the base 1. The side of the support block 19 close to the screw 7 is provided with a bearing seat adapted to the screw 7, so as to facilitate the rotation of the screw 7. Two fixed blocks 2 are arranged on the upper surface of the base 1, and a slide groove 3 is opened in the fixed block 2. A slider 9 is axially slid in the slide groove 3. As the screw 7 rotates, the cross plate 11 is driven to rotate, but the cross plate 11 is rotationally limited by the two second support plates 14, and the slider 9 follows the slide in the slide groove 3, so that the two first support plates 12 slide. The slider 9 is provided in plurality, the first support plate 12 is installed on the outside of the slider 9, and a groove is provided in the first support plate 12, a transverse plate 11 fixed on the screw rod 7 is inserted into the groove, the groove facilitates the installation of the transverse plate 11, and the transverse plate 11 is rotationally limited.

[0029] Furthermore, the two first support plates 12 are provided with a rotating shaft 13 for driving the cleaning roller 8 to rotate on the opposite surfaces thereof, and the cleaning roller 8 is driven to rotate by the rotating shaft 13. The recycling assembly includes a positioning block installed in the slide groove 3, and the positioning block is provided in four pieces, and the positioning blocks respectively fix the second support plate 14 and the third support plate 20, thereby ensuring the stability of the second support plate 14 and the third support plate 20. The outer sides of the four positioning blocks are respectively connected with the second support plate 14 and the third support plate 20 which are symmetrical in pairs, and a fixed pulley is provided between the two second support plates 14, and a belt 15 is provided on the outer side of the pulley 16, and a first absorbent cotton 10 which abuts against the cleaning roller 8 and can absorb the dust stains attached to the surface of the cleaning roller 8 is provided on the outer side of the belt 15, and as the pulley 16 drives the belt 15 to rotate so that the first absorbent cotton 10 follows the rotation, the first absorbent cotton 10 can absorb the dust stains and turbid cleaning liquid attached to the cleaning roller 8, thereby ensuring the cleaning efficiency of the cleaning roller 8. A shell 22 is arranged between the two third support plates 20, and a second absorbent cotton 23 is arranged in the shell 22. A scraper 26 abutting against the first absorbent cotton 10 is arranged on the side of the shell 22 close to the first absorbent cotton 10. As the first absorbent cotton 10 rotates, the scraper 26 can scrape off the dust stains on the first absorbent cotton 10 and make them fall onto the second absorbent cotton 23 in the shell 22. An air pump 21 is provided on the upper surface of the shell 22, and a push rod 24 is connected to the power output end of the air pump 21. The push rod 24 extends into the shell 22 and is connected to a pressure plate 25. The pressure plate 25 abuts against the second absorbent cotton 23. An outlet pipe 17 is connected to the outside of the shell 22, and an end of the outlet pipe 17 away from the shell 22 is connected to a water collecting box 18. As the push rod 24 drives the pressure plate 25 to press the second absorbent cotton 23, the waste liquid absorbed in the second absorbent cotton 23 is squeezed and discharged from the outlet pipe 17 to the water collecting box 18.

[0030] The method for using the dust collector structure based on the positive and negative pressure integrated pneumatic ash conveying system includes the following steps:

[0031] Step A, when the boiler is finished working, the base 1 is installed in the boiler tube bank using an instrument, and the motor 4 is started. The power output end of the motor 4 drives the screw 7 to rotate, and as the screw 7 rotates, the horizontal plate 11 rotates accordingly;

[0032] Step B: The horizontal plate 11 is rotationally limited by the two first support plates 12, and the slider 9 slides in the slide groove 3, thereby driving the two first support plates 12 to move, so that the cleaning roller 8 abuts against the inner wall of the boiler tube bank to clean the ash stains attached to the tube bank;

[0033] Step C, when the cleaning roller 8 finishes cleaning, the slider 9 is slid to the side of the positioning block, and the cleaning roller 8 is brought into contact with the first absorbent cotton 10, and the pulley 16 is rotated to drive the belt 15 to rotate, so that the first absorbent cotton 10 rotates successively to absorb the water stains and dust stains attached to the cleaning roller 8;

[0034] Step D: As the belt 15 rotates, the outer wall of the first absorbent cotton 10 abuts against the scraper 26, so that the water stains and ash stains fall onto the second absorbent cotton 23 through the scraper 26, and the air pump 21 is started. The power output end of the air pump 21 drives the push rod 24 to push, driving the pressing plate 25 to squeeze the second absorbent cotton 23, so that the water therein is squeezed out;

[0035] Step E: Finally, the water squeezed out of the second absorbent cotton 23 in the housing 22 flows into the water collecting box 18 through the water outlet pipe 17 .

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. The dust collector structure based on the positive and negative pressure integrated pneumatic ash conveying system is characterized by: The invention comprises a base (1) arranged in a boiler tube bank, two first support plates (12) sliding along the length direction of the base (1) are arranged above the base (1), a cleaning roller (8) for contacting the inner wall of the boiler tube bank is arranged between the two first support plates (12), a power component for driving the cleaning roller (8) to move axially is arranged at one end of the base (1), a recovery component for scraping off dust stains on the outer side of the cleaning roller (8) is arranged at the other end of the base (1), the power component comprises a vertical plate (6) mounted on the upper surface of the base (1), a bearing plate (5) is arranged on the outer side of the vertical plate (6), and a motor (4) is installed on the bearing plate (5). ), the power output end of the motor (4) passes through the vertical plate (6) and is connected to a screw rod (7), the end of the screw rod (7) away from the motor (4) is connected to a support block (19), the support block (19) is mounted on the base (1), the upper surface of the base (1) is provided with two fixed blocks (2), a slide groove (3) is provided in the fixed block (2), a slider (9) is axially slidable in the slide groove (3), the slider (9) is provided in a plurality, the first support plate (12) is installed on the outside of the slider (9), and a groove is provided in the first support plate (12), a horizontal plate (11) fixed on the screw rod (7) is inserted in the groove, the two first The opposite surfaces of the support plates (12) are both provided with rotating shafts (13) for driving the cleaning roller (8) to rotate. The recycling component comprises positioning blocks installed in the slide groove (3). The positioning blocks are provided in four numbers, and the outer sides of the four positioning blocks are respectively connected to second supporting plates (14) and third supporting plates (20) which are symmetrical in pairs. A pulley is provided between the two second supporting plates (14). A belt (15) is provided on the outer side of the pulley (16). A first absorbent cotton (10) which abuts against the cleaning roller (8) and can absorb dust stains attached to the surface of the cleaning roller (8) is provided on the outer side of the belt (15). A second absorbent cotton (10) which abuts against the cleaning roller (8) and can absorb dust stains attached to the surface of the cleaning roller (8) is provided between the two third supporting plates (20). A shell (22) is provided, a second absorbent cotton (23) is arranged in the shell (22), and a scraper (26) abutting against the first absorbent cotton (10) is provided on the side of the shell (22) close to the first absorbent cotton (10), an air pump (21) is provided on the upper surface of the shell (22), a push rod (24) is connected to the power output end of the air pump (21), the push rod (24) extends into the shell (22) and is connected to a pressure plate (25), the pressure plate (25) abuts against the second absorbent cotton (23), the outer side of the shell (22) is connected to a water outlet pipe (17), and the end of the water outlet pipe (17) away from the shell (22) is connected to a water collecting box (18).

2. The method for using the dust collector structure based on the positive and negative pressure integrated pneumatic ash conveying system according to claim 1 is characterized in that: The following steps are included: Step (A), when the boiler is finished working, the base (1) is installed in the boiler tube bank using an instrument, and the motor (4) is started. The power output end of the motor (4) drives the screw (7) to rotate, and as the screw (7) rotates, the horizontal plate (11) rotates accordingly; Step (B), the horizontal plate (11) is rotationally limited by the two first support plates (12), and the slider (9) slides in the slide groove (3), thereby driving the two first support plates (12) to move, so that the cleaning roller (8) abuts against the inner wall of the boiler tube bank, and the ash stains attached to the tube bank are cleaned; Step (C), when the cleaning roller (8) has finished cleaning, the slider (9) is slid to the side of the positioning block, and the cleaning roller (8) is brought into contact with the first absorbent cotton (10), and the pulley (16) is rotated to drive the belt (15) to rotate, so that the first absorbent cotton (10) rotates successively to absorb the water stains and dust stains attached to the cleaning roller (8); Step (D), as the belt (15) rotates, the outer wall of the first absorbent cotton (10) abuts against the scraper (26), so that the water stains and ash stains fall onto the second absorbent cotton (23) through the scraper (26), and the air pump (21) is started. The power output end of the air pump (21) drives the push rod (24) to push, driving the pressure plate (25) to squeeze the second absorbent cotton (23), so that the water therein is squeezed out; Step (E), finally, the water squeezed out of the second absorbent cotton (23) in the housing (22) flows into the water collection box (18) through the water outlet pipe (17).

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