Automatic cleaning device for desulfurization and denitrification system

Abstract

The utility model relates to the technical field of purification spray towers, and specifically to an automatic cleaning device for a desulfurization and denitrification system, comprising a detergent barrel, at least one dispensing pipe and at least one group of cleaning units, each dispensing pipe corresponding to each group of cleaning units one by one, at least one group of spray components is arranged in the purification tower, a group of cleaning units is arranged below the spray components, the cleaning units comprise a cleaning component and a moving component, both sides of the moving component are respectively mounted on both sides of the inner wall of the purification tower, the cleaning component moves up and down along a lead screw mechanism on the moving component through a nut mechanism; the detergent barrel is fixedly arranged at the lower end of the interior of the purification tower, the detergent barrel is connected to the lower end of the dispensing pipe, the upper end of the dispensing pipe is connected to the interior of the cleaning component, the cleaning component comprises a nozzle, and the nozzle is connected to the interior of the cleaning component; the utility model reduces manual participation, cleans the purification tower, and can improve the working efficiency of the purification tower.

Description

Technical Field

[0001] The utility model relates to the technical field of purification spray towers, in particular to an automatic cleaning device for a desulfurization and denitration system. Background Art

[0002] Flue gas desulfurization and denitrification technology is a boiler flue gas purification technology applied to the generation of multiple nitrogen oxides and sulfur oxides. Therefore, the desulfurization and denitrification system is connected to the boiler flue gas discharge point. Generally, the desulfurization and denitrification system includes a purification tower. A spray device is arranged inside the purification tower to spray a specific liquid to react with the flue gas to remove nitrogen oxides and sulfur oxides, so that the flue gas meets the discharge standard. However, after the purification tower is used for a long time, dust and dirt are easily accumulated on the inner wall of the purification tower, which can easily affect the rise of the flue gas, such as the adhesion of sulfides or the gas carrying liquid, etc., which reduces the efficiency and quality of flue gas treatment. Therefore, regular cleaning is required to ensure the normal operation of the equipment.

[0003] The existing technology requires regular shutdown and manual cleaning according to the actual operating conditions, which poses a great safety hazard. In addition, frequent inspections and heavy equipment maintenance work seriously affect the working efficiency of the purification tower. Utility Model Content

[0004] The main purpose of the utility model is to provide an automatic cleaning device for a desulfurization and denitrification system, which can effectively solve the above-mentioned problems.

[0005] The utility model provides the following technical solutions:

[0006] A desulfurization and denitrification system automatic cleaning device is installed inside a purification tower and cleans dust attached to the inner wall of the purification tower, comprising a detergent barrel, at least one dispensing pipe and at least one group of cleaning units, each dispensing pipe corresponds to each group of cleaning units one by one, at least one group of spray components is arranged in the purification tower, a group of cleaning units is arranged below the spray components, each group of cleaning units comprises a cleaning component and a moving component, and both sides of the moving component are respectively installed on both sides of the inner wall of the purification tower; the cleaning component comprises an annular lifting frame and a nozzle, both ends of the annular lifting frame are respectively connected with both sides of the moving component, the annular lifting frame moves up and down along the screw mechanism of the moving component through a nut mechanism, the nozzle is installed on the annular lifting frame, and the nozzle is connected to the inside of the annular lifting frame; the detergent barrel is fixedly arranged at the lower end of the interior of the purification tower, the detergent barrel is connected to the lower end of the dispensing pipe, and the upper end of the dispensing pipe is connected to the inside of the annular lifting frame.

[0007] In an optional embodiment, the cleaning assembly also includes a brush and a connecting tube; a accommodating chamber is arranged inside the annular lifting frame, a connecting tube is fixedly arranged at the lower end of the accommodating chamber, and the connecting tube is connected to the upper end of the liquid dispensing tube; a plurality of brushes are arranged at fixed intervals on the outer wall of the annular lifting frame, and the other end of the brush is in contact with the inner wall of the purification tower.

[0008] In an optional embodiment, a plurality of the nozzles are arranged, and the plurality of nozzles are evenly spaced along the circumference of the annular lifting frame. The nozzles are connected to the receiving chamber in the annular lifting frame, and an angle is formed between the nozzles and the annular lifting frame, and the angle is between 0° and 90°.

[0009] In an optional embodiment, the moving assembly includes a screw and a guide column, the screw is arranged on one side of the purification tower, the guide column is arranged on the other side of the purification tower, a protective tube is arranged outside the screw, and a moving groove is opened on the connecting sleeve.

[0010] In an optional embodiment, a connecting sleeve one is fixedly provided on the outer wall of one side of the annular lifting frame, and a connecting sleeve two is provided on the outer wall of the other side, a connecting sleeve three is provided inside the connecting sleeve two, the connecting sleeve two is plugged into and slidably connected to the protective tube, the connecting sleeve three passes through the movable groove and is threadedly connected to the screw rod through the nut block, and the connecting sleeve one is slidably connected to the guide column.

[0011] In an optional embodiment, at least one liquid outlet is provided on the upper surface of the detergent barrel, and the liquid outlet is connected to the liquid dispensing tube in a one-to-one correspondence.

[0012] In an optional embodiment, the spray assembly includes a liquid storage tank and a liquid separation rack, the liquid storage tank is fixedly arranged inside the purification tower through the liquid separation rack, the liquid storage tank includes only at least one group of annular boxes, the liquid separation rack is fixedly connected to the upper surface of the annular box, the liquid separation rack is connected to the inside of the annular box, the middle part of the liquid separation rack is connected to the external infusion equipment through the liquid inlet pipe, and the end of the liquid separation rack is connected to the inner wall of the purification tower.

[0013] In an optional embodiment, the spray assembly further includes a spray head, and a plurality of spray heads are fixedly disposed on the lower surface of the liquid storage tank, and the plurality of spray heads are all connected to the interior of the liquid storage tank.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides an automatic cleaning device for a desulfurization and denitrification system, which drives a nozzle to move through a liftable annular lifting frame, and after the cleaning agent in the annular lifting frame is sprayed through the nozzle, it contacts with the dust on the inner wall of the purification tower to wash away most of the dust, and at the same time drives the brush to move along the inner wall of the purification tower to clean the stubborn dust residues; the device can set a corresponding number of cleaning units according to the structure and number of groups of the spray assembly in the purification tower, and the multiple cleaning units are connected to the cleaning agent barrel arranged at the lower end of the purification tower through a liquid distribution pipe, without manual participation, reducing safety hazards, can clean the dust and dirt on the inner wall of the purification tower, and can also effectively reduce the number of shutdowns, and can improve the working efficiency of the purification tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the connection and section structure of an automatic cleaning device for a desulfurization and denitrification system according to an embodiment of the utility model;

[0018] Figure 2 This is a cross-sectional view of a connection of an automatic cleaning device for a desulfurization and denitration system according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure of the cleaning component of the embodiment of the utility model;

[0020] Figure 4 This is a cross-sectional view of the cleaning assembly connection of an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure of the spray assembly of an embodiment of the utility model.

[0022] Reference numerals:

[0023] 1. Purification tower; 11. Smoke inlet; 12. Liquid discharge port; 2. Spray assembly; 21. Liquid inlet pipe; 22. Liquid storage tank; 23. Spray head; 24. Liquid separation rack; 3. Cleaning assembly; 31. Annular lifting rack; 311. Connecting sleeve one; 312. Connecting sleeve two; 313. Boss; 314. Connecting sleeve three; 32. Spray head; 33. Brush; 34. Connecting pipe; 4. Moving assembly; 41. Upper mounting plate; 42. Lower mounting plate; 43. Screw rod; 44. Guide column; 45. Lifting motor; 46. Protective tube; 5. Detergent barrel; 51. Liquid outlet; 6. Liquid separation pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific implementation examples Figure 1-5As shown, an automatic cleaning device for a desulfurization and denitrification system is installed inside a purification tower 1 and cleans dust attached to the inner wall of the purification tower 1, comprising a detergent barrel 5, at least one dispensing pipe 6 and at least one group of cleaning units, each dispensing pipe 6 corresponds one-to-one to each group of cleaning units, at least one group of spray components 2 is arranged in the purification tower 1, a group of cleaning units is arranged below each group of spray components 2, each group of cleaning units comprises a cleaning component 3 and a moving component 4, both sides of the moving component 4 are respectively installed on both sides of the inner wall of the purification tower 1, the cleaning component 3 moves up and down along the screw mechanism of the moving component 4 through a nut mechanism to clean the inner wall of the purification tower 1; the detergent barrel 5 is fixedly arranged at the lower end of the interior of the purification tower 1, at least one liquid outlet 51 is arranged on the upper surface of the detergent barrel 5, the liquid outlet 51 is connected one-to-one with the dispensing pipe 6, and the other end of the dispensing pipe 6 is connected to the interior of the cleaning component 3.

[0026] A flue gas inlet 11 is provided at one end of the lower part of the purification tower 1, and a drain port 12 is provided at the other end. The flue gas inlet 11 is connected to the boiler to introduce boiler flue gas containing sulfur and nitrate into the interior of the purification tower 1. An on-off valve is provided on the drain port 12 to discharge the liquid accumulated in the purification tower 1; the spray assembly 2 is fixedly arranged inside the purification tower 1. In this embodiment, two groups of spray assemblies 2 are taken as an example. The two groups of spray assemblies 2 are arranged up and down along the purification tower 1. The two groups of spray assemblies 2 divide the interior of the purification tower 1 into two sections of space to be cleaned, and a group of cleaning units are installed in each section of the space to be cleaned.

[0027] The liquid outlet 51 is connected to the lower end of the liquid dispensing tube 6, and a circulation pump is arranged between the liquid outlet 51 and the liquid dispensing tube 6 to facilitate the passage of the cleaning agent into the cleaning component 3; the upper end of one of the liquid dispensing tubes 6 is connected to the cleaning component 3 in the cleaning unit located below, and the other liquid dispensing tube 6 passes through the spray component 2 located at the lower part of the purification tower 1 and is connected to the cleaning component 3 in the cleaning unit located above.

[0028] The spray assembly 2 includes a liquid inlet pipe 21, a liquid storage tank 22, a spray head 23 and a liquid separation rack 24; the liquid storage tank 22 is arranged inside the purification tower 1 through the liquid separation rack 24, and the liquid storage tank 22 includes at least one group of annular boxes, and the liquid separation rack 24 is fixedly connected to the upper surface of the annular box. The liquid separation rack 24 is connected to the inside of the annular box, and the middle part of the liquid separation rack 24 is connected to the external infusion equipment through the liquid inlet pipe 21, and the end of the liquid separation rack 24 is connected to the inner wall of the purification tower 1.

[0029] In this embodiment, the liquid storage tank 22 includes a plurality of groups of annular boxes arranged concentrically at intervals, and a gap is formed between two adjacent groups of annular boxes. The liquid distribution pipe 6 can pass through the gap to communicate with the cleaning component 3 above the spray component 2; a liquid distribution frame 24 is fixedly arranged on the upper surface of the plurality of groups of annular boxes, and the liquid distribution frame 24 includes two liquid distribution boxes arranged vertically and crosswise. After the liquid distribution box extends radially, the ends of the two ends of the liquid distribution box are connected to the inner wall of the purification tower 1, and the interior of the liquid distribution box is respectively communicated with the interior of the plurality of groups of annular boxes. A liquid inlet pipe 21 is arranged in the middle of the liquid distribution frame 24, and the other end of the liquid inlet pipe 21 passes through the purification tower 1 and is communicated with the external infusion equipment, so that a specific liquid is passed into the liquid distribution frame 24 through the liquid inlet pipe 21, and then respectively passed into the liquid storage tank 22; a plurality of spray heads 23 are fixedly arranged on the lower surface of each annular box on the liquid storage tank 22, and the plurality of spray heads 23 are all communicated with the interior of the liquid storage tank 22 to spray the specific liquid into the purification tower 1.

[0030] The moving assembly 4 includes an upper mounting plate 41, a lower mounting plate 42, a screw 43, a guide column 44, a lifting motor 45 and a protective tube 46; two upper mounting plates 41 and two lower mounting plates 42 are provided, and the two upper mounting plates 41 and the two lower mounting plates 42 are respectively fixedly arranged on both sides of the inner wall of the purification tower 1, and the upper mounting plate 41 and the lower mounting plate 42 are arranged up and down; the screw 43 is arranged on one side of the interior of the purification tower 1, and the guide column 44 is arranged on the other side of the interior of the purification tower 1, the upper end of the screw 43 passes through the upper mounting plate 41, and is rotatably connected to the upper mounting plate 41, and the lower end of the screw 43 passes through the lower mounting plate 42, and is rotatably connected to the lower mounting plate 42, and the two ends of the guide column 44 are respectively fixedly connected to the upper mounting plate 41 and the lower mounting plate 42; the lifting motor 45 is arranged at the lower end of the screw rod 43, and the output shaft of the lifting motor 45 is fixedly connected to the screw rod 43; the protective cylinder 46 is sleeved outside the screw rod 43, and is used to protect the screw rod 43 to prevent dust and dirt from falling on the screw rod 43 during the operation of the purification tower 1, thereby affecting the normal use of the screw rod 43. The upper and lower ends of the protective cylinder 46 are respectively fixedly connected to the lower surface of the upper mounting plate 41 and the upper surface of the lower mounting plate 42, and a movable groove is provided on one side of the protective cylinder 46.

[0031] The cleaning assembly 3 includes an annular lifting frame 31, a brush 33 and a connecting pipe 34; a receiving chamber is arranged inside the annular lifting frame 31 for receiving the cleaning agent input from the cleaning agent barrel 5; the outer side of the annular lifting frame 31 extends downward to form a mounting wall; a boss 313 is fixedly arranged at the lower end of the mounting wall; a connecting pipe 34 is fixedly arranged on the boss 313; the upper end of the connecting pipe 34 is communicated with the receiving chamber of the annular lifting frame 31; the lower end of the connecting pipe 34 passes through the boss 313 and is connected to the upper end of the liquid dispensing tube 6; a connecting sleeve 1 311 is fixedly arranged on the outer wall of one side of the annular lifting frame 31; a connecting sleeve 2 312 is arranged on the outer wall of the other side; the protective tube 46 is connected to the connecting sleeve The second sleeve 312 is plugged in and slidably connected, a connecting sleeve three 314 is arranged in the connecting sleeve two 312, the connecting sleeve three 314 passes through the movable groove on the protective sleeve 46 and extends into the interior of the protective sleeve 46, and the connecting sleeve three 314 is sleeved on the screw rod 43 and is threadedly connected to the screw rod 43 through the nut block; the connecting sleeve one 311 is sleeved on the guide column 44, and the connecting sleeve one 311 is slidably connected to the guide column 44; a plurality of brushes 33 are arranged, and a plurality of brushes 33 are fixedly arranged on the outer side wall of the annular lifting frame 31, and a plurality of brushes 33 are spaced between the connecting sleeve one 311 and the connecting sleeve two 312, and the other end of the brush 33 contacts the inner wall of the purification tower 1.

[0032] The cleaning assembly 3 also includes a nozzle 32, and a plurality of nozzles 32 are provided. The plurality of nozzles 32 are fixedly arranged on the upper surface of the annular lifting frame 31, and the plurality of nozzles 32 are evenly spaced along the circumference of the annular lifting frame 31. A connecting pipe is provided at the lower end of the nozzle 32, and the nozzle 32 and the accommodating cavity of the annular lifting frame 31 are connected through the connecting pipe. The nozzle 32 and the annular lifting frame 31 are arranged at an angle, and the angle is between 0°-90°, so that the nozzle 32 can spray the cleaning agent onto the inner wall of the purification tower 1 to flush the dust and dirt attached to the inner wall of the purification tower 1.

[0033] The use process and working principle of this device:

[0034] The automatic cleaning device is installed in the purification tower 1. After the purification tower 1 has been working for a period of time, if there is too much dust attached to the inner wall of the purification tower 1, the detergent in the detergent barrel 5 is pumped into the accommodating cavity of the annular lifting frame 31 through the liquid distribution pipe 6, and sprayed onto the inner wall of the purification tower 1 through multiple nozzles 32. The detergent merges with the dust on the inner wall of the purification tower 1, so that most of the dust on the inner wall of the purification tower 1 slides down with the detergent liquid. At the same time, the lifting motor 45 is started, and the output shaft of the lifting motor 45 drives the screw rod 43 to rotate, driving the annular lifting frame 31 to rise or fall along the screw rod 43, and the end of the brush 33 in contact with the inner wall of the purification tower 1 rises or falls, so as to remove the stubborn dust remaining on the inner wall of the purification tower 1, so that it falls into the dust and detergent mixture at the lower end of the purification tower 1 and is discharged through the drain port 12.

[0035] The utility model provides an automatic cleaning device for a desulfurization and denitrification system, which drives a nozzle to move through a liftable annular lifting frame, and after the cleaning agent in the annular lifting frame is sprayed through the nozzle, it contacts with the dust on the inner wall of the purification tower to wash away most of the dust, and at the same time drives the brush to move along the inner wall of the purification tower to clean the stubborn dust residues; the device can set a corresponding number of cleaning units according to the structure and number of groups of the spray assembly in the purification tower, and the multiple cleaning units are connected to the cleaning agent barrel arranged at the lower end of the purification tower through a liquid distribution pipe, without manual participation, reducing safety hazards, can clean the dust and dirt on the inner wall of the purification tower, and can also effectively reduce the number of shutdowns, and can improve the working efficiency of the purification tower.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic cleaning device for a desulfurization and denitrification system, installed inside a purification tower (1) and cleaning dust attached to the inner wall of the purification tower (1), characterized in that: The cleaning tower (1) comprises a detergent barrel (5), at least one dispensing pipe (6) and at least one group of cleaning units, each dispensing pipe (6) corresponding to each group of cleaning units one by one, at least one group of spraying components (2) being arranged in the cleaning tower (1), a group of cleaning units being arranged below the spraying components (2), each group of cleaning units comprising a cleaning component (3) and a moving component (4), the two sides of the moving component (4) being respectively mounted on the two sides of the inner wall of the cleaning tower (1); the cleaning component (3) comprising an annular lifting frame (31) and a spray head (32), the annular lifting frame (31) and a spray head (32) The two ends of the annular lifting frame (31) are respectively connected to the two sides of the moving assembly (4); the annular lifting frame (31) moves up and down along the lead screw mechanism of the moving assembly (4) through a nut mechanism; the spray head (32) is mounted on the annular lifting frame (31), and the spray head (32) is connected to the inside of the annular lifting frame (31); the detergent barrel (5) is fixedly arranged at the lower end of the interior of the purification tower (1); the detergent barrel (5) is connected to the lower end of the liquid dispensing pipe (6), and the upper end of the liquid dispensing pipe (6) is connected to the inside of the annular lifting frame (31).

2. The automatic cleaning device for a desulfurization and denitrification system according to claim 1 is characterized in that: The cleaning assembly (3) further comprises a brush (33) and a connecting pipe (34); a receiving chamber is arranged inside the annular lifting frame (31), a connecting pipe (34) is fixedly arranged at the lower end of the receiving chamber, and the connecting pipe (34) is connected to the upper end of the liquid dispensing pipe (6); a plurality of brushes (33) are arranged at fixed intervals on the outer wall of the annular lifting frame (31), and the other end of the brushes (33) is in contact with the inner wall of the purification tower (1).

3. The automatic cleaning device for a desulfurization and denitrification system according to claim 2 is characterized in that: A plurality of the nozzles (32) are arranged, and the plurality of nozzles (32) are evenly spaced and arranged along the circumference of the annular lifting frame (31); the nozzles (32) are connected to the receiving chamber in the annular lifting frame (31); the nozzles (32) and the annular lifting frame (31) are arranged at an angle, and the angle is between 0° and 90°.

4. The automatic cleaning device for a desulfurization and denitrification system according to claim 1 is characterized in that: The moving assembly (4) comprises a screw rod (43) and a guide column (44), wherein the screw rod (43) is arranged on one side of the interior of the purification tower (1), and the guide column (44) is arranged on the other side of the interior of the purification tower (1), a protective tube (46) is arranged outside the screw rod (43), and a moving groove is provided on the connecting sleeve three (314).

5. The automatic cleaning device for a desulfurization and denitrification system according to claim 4 is characterized in that: A connecting sleeve 1 (311) is fixedly arranged on the outer wall of one side of the annular lifting frame (31), and a connecting sleeve 2 (312) is arranged on the outer wall of the other side. A connecting sleeve 3 (314) is arranged inside the connecting sleeve 2 (312). The connecting sleeve 2 (312) is plugged into and slidably connected with the protective tube (46). The connecting sleeve 3 (314) passes through the movable groove and is threadedly connected with the screw rod (43) through a nut block. The connecting sleeve 1 (311) is slidably connected with the guide column (44).

6. The automatic cleaning device for a desulfurization and denitrification system according to claim 1, characterized in that: At least one liquid outlet (51) is provided on the upper surface of the detergent barrel (5), and the liquid outlet (51) is connected to the liquid dispensing tube (6) in a one-to-one correspondence.

7. The automatic cleaning device for a desulfurization and denitrification system according to claim 1 is characterized in that: The spray assembly (2) comprises a liquid storage box (22) and a liquid separation frame (24). The liquid storage box (22) is fixedly arranged inside the purification tower (1) via the liquid separation frame (24). The liquid storage box (22) comprises at least one group of annular boxes. The liquid separation frame (24) is fixedly connected to the upper surface of the annular box. The liquid separation frame (24) is connected to the inside of the annular box. The middle part of the liquid separation frame (24) is connected to an external infusion device via a liquid inlet pipe (21). The end of the liquid separation frame (24) is connected to the inner wall of the purification tower (1).

8. The automatic cleaning device for a desulfurization and denitrification system according to claim 7, characterized in that: The spray assembly (2) further comprises a spray head (23); a plurality of spray heads (23) are fixedly arranged on the lower surface of the liquid storage tank (22); and the plurality of spray heads (23) are all in communication with the interior of the liquid storage tank (22).

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