Rotary flushing device for wet desulphurization demister

Abstract

The invention discloses a rotary flushing device for a wet desulphurization demister, and relates to the technical field of demister cleaning, the rotary flushing device comprises a tower body, a demister main body, a cross-shaped square tube and a plurality of groups of spray heads located at the bottom of the cross-shaped square tube, and the tower body is internally provided with a rotary flushing mechanism; according to the demister disclosed by the invention, through the designed rotary flushing mechanism, during use, multiple groups of spraying heads on a cross-shaped square pipe can be rotated to flush the surface of the demister main body below, so that the cross-shaped square pipe rotates stably, and meanwhile, the upper surface of the demister main body can be cleaned through rotation of a cleaning brush below; according to the demister, the washing effect on fog drops and liquid drops containing corrosive components on the upper surface of the demister body is improved, in the rotating process, the multiple sets of spraying heads can swing to wash the demister body below, the washing coverage range of the demister body is widened, and the washing effect is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of demister cleaning, in particular to a rotary flushing device for a wet desulfurization demister. Background Art

[0002] As a highly efficient waste gas treatment equipment, the wet desulfurization tower plays an important role in the waste gas treatment of coal-fired boilers, chemical, metallurgical, electric power and other industries. It achieves efficient desulfurization by spraying liquid to react chemically with pollutants such as sulfur dioxide in the waste gas. A demister is installed in the wet desulfurization tower. The main function of the demister is to remove droplets and liquid droplets in the flue gas to prevent these particles from corroding and clogging the equipment. The droplets and liquid droplets contain corrosive components. The corrosive components adhere to the surface of the demister and will corrode it. Regular spraying and flushing can effectively prevent this corrosion and extend the service life of the demister.

[0003] In the Chinese patent application number 201010153855.X, an automatic rotary flushing device for wet flue gas desulfurization demister is disclosed. The surface of the demister is flushed through the water spray holes on the rotating spray pipe to reduce the corrosion of the mist droplets and corrosive components in the liquid to the demister. However, during the above-mentioned rotary flushing process, the spray pipe only relies on the water pressure to drive its self-rotation. When the water pressure cannot reach the force to drive the spray pipe to rotate, it is easy to stop rotating, affecting the flushing effect of the demister. Moreover, during the flushing process, the spray pipe located on the spray pipe sprays water in a downward direction. The coverage area of ​​the spray to the sprayer during the rotary spraying process is limited, further reducing the flushing effect of the demister. For this reason, we propose a rotary flushing device for wet flue gas desulfurization demister. Summary of the invention

[0004] The object of the present invention is to provide a rotary flushing device for a wet desulfurization demister to solve the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a rotary flushing device for a wet desulfurization demister, comprising a tower body, a demister body, a cross-shaped square tube and a plurality of spray heads located at the bottom of the cross-shaped square tube, wherein a rotary flushing mechanism is arranged inside the tower body, and the rotary flushing mechanism comprises:

[0006] The rotating assembly is arranged inside the tower body and is used to drive the cross-shaped square tube to rotate;

[0007] A swing assembly is arranged at the bottom of the rotating assembly and is used to drive the sprinkler head to swing;

[0008] The swing assembly comprises a cross-shaped bar and a triangular block, wherein the cross-shaped bar is used to fix the spray head, and an outer column is fixedly arranged at the end of the cross-shaped bar.

[0009] A connecting hose is fixedly arranged between the top of the spray head and the cross-shaped square tube, a plurality of groups of limiting vertical plates are fixedly arranged at the bottom of the cross-shaped square tube, a plurality of groups of springs are also fixedly arranged between the spray head and the cross-shaped square tube, and an L-shaped rod is fixedly arranged on the triangular block.

[0010] The rotating assembly comprises a top bearing and a tube body mounted on the inner wall of the tower body, an outer gear ring is fixedly arranged on the inner wall of the top bearing, and an inclined rod is fixedly arranged between the end of the cross-shaped square tube and the outer gear ring;

[0011] A double-headed motor is fixedly arranged on the inner wall of the tower body, and an upper gear is fixedly arranged on the top of the double-headed motor.

[0012] A connecting ring frame is arranged outside the tube body, and an end of the connecting ring frame is fixedly connected to the inner wall of the outer gear ring;

[0013] The tube body is fixed on the top of the cross-shaped square tube, and a bearing frame is also arranged outside the tube body;

[0014] A rotating joint is arranged on the top of the tube body, and a water inlet pipe is arranged on the top of the rotating joint;

[0015] An oblique nozzle is fixedly arranged on the surface of the cross-shaped square tube, and a connecting pipe is fixedly arranged on the oblique nozzle.

[0016] The rotating assembly also includes a cleaning piece, which includes a cleaning brush. Connecting columns are fixedly arranged on the tops of both ends of the cleaning brush. Two groups of arc plates are fixedly arranged on the cross-shaped square tube.

[0017] A cleaning assembly is arranged at the bottom of the demister body, and the cleaning assembly comprises an inner gear ring, a strip brush is fixedly arranged at the top of the inner wall of the inner gear ring, a vertical rod is fixedly arranged at the bottom of the double-headed motor, and a lower gear is fixedly arranged at the bottom of the vertical rod.

[0018] Two groups of support rings are sleeved and fixed on the outside of the inner gear ring, and two groups of arc grooves are opened on the inner wall of the tower body, and the support rings are located inside the arc grooves.

[0019] The demister body is provided with an auxiliary flushing member, which includes a plurality of bottom pipes, a plurality of hollow plates are fixedly provided on the top of the bottom pipes, and a plurality of nozzles are fixedly provided on both sides of the hollow plates;

[0020] A vertical pipe is fixedly arranged at the bottom of the water inlet pipe, a valve is arranged on the vertical pipe, a horizontal pipe is fixedly arranged at the bottom of the vertical pipe, and the end of the horizontal pipe extends to the inside of the tower body.

[0021] A tower top is fixedly arranged on the top of the tower body, and the demister body is fixed inside the tower body.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention is designed with a rotating flushing mechanism. During use, the multiple groups of spray heads on the cross-shaped square tube can be rotated to flush the surface of the defogger body below, making the cross-shaped square tube rotate stably. At the same time, the cleaning brush below can be rotated to clean the upper surface of the defogger body, thereby increasing the flushing effect of the droplets and liquid droplets containing corrosive components on the upper surface of the defogger body. In addition, during the rotation process, the multiple groups of spray heads can be swung to flush the defogger body below, thereby increasing the flushing coverage of the defogger body and further increasing the flushing effect.

[0024] (2) The present invention has a cleaning component designed so that when the cross-shaped square tube rotates and flushes, it can drive the strip brush below to rotate and clean the lower surface of the demister body, thereby removing the corrosive components attached to the lower surface, and cooperating with the water flushing sprayed from the upper spray head to increase the cleanliness of the flushing of the demister body.

[0025] (3) The auxiliary flushing parts designed in the present invention can transport water to the hollow plate through the transverse pipe when the water sprayed from the spray head is difficult to spray directly onto the inner surface of the demister body during the flushing process, and spray water through the nozzle to the part of the demister body that is difficult to flush directly, thereby improving the flushing performance of the demister body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the cross-sectional structure of the tower body of the present invention;

[0027] Figure 2 It is a schematic diagram of the main structure of the demister of the present invention;

[0028] Figure 3 It is a schematic diagram of the structure of the demister body of the present invention when viewed from above;

[0029] Figure 4 It is a schematic diagram of the connection structure of the water inlet pipe and the vertical pipe of the present invention;

[0030] Figure 5 It is a schematic diagram of the strip brush structure of the present invention;

[0031] Figure 6 It is a schematic diagram of the cleaning brush of the present invention when viewed from above;

[0032] Figure 7 This is a bottom view of the cross-shaped square tube structure of the present invention;

[0033] Figure 8 It is a schematic diagram of the connection structure of the arc plate and the cross-shaped square tube of the present invention;

[0034] Fig. 9 It is a left-side structural schematic diagram of the hollow slab of the present invention;

[0035] Fig.10 It is a schematic diagram of the hollow and bottom tube structure of the present invention when viewed from above;

[0036] Fig.11 It is a schematic diagram of the connection structure between the bottom pipe and the hollow plate of the present invention;

[0037] Fig.12 It is a schematic diagram of the tower body and tower top structure of the present invention;

[0038] In the figure: 100, tower top; 101, cross-shaped square tube; 102, demister body; 103, tower body; 104, spray head; 200, bearing frame; 201, top bearing; 202, water inlet pipe; 203, pipe body; 204, rotary joint; 206, outer gear ring; 207, double-head motor; 208, connecting ring frame; 209, outer column; 210, triangular block; 211, cleaning brush; 212, arc plate; 213, 3. Connecting hose; 214. Cross bar; 215. Upper gear; 216. Connecting column; 217. Limiting vertical plate; 218. Oblique nozzle; 219. Spring; 220. Arc groove; 300. Support ring; 302. Inner gear ring; 306. Vertical rod; 307. Lower gear; 308. Strip brush; 400. Hollow plate; 401. Horizontal pipe; 402. Vertical pipe; 403. Nozzle; 404. Bottom pipe; 405. Valve. DETAILED DESCRIPTION

[0039] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The present invention provides a technical solution: a rotary flushing device for a wet desulfurization demister, comprising a tower body 103, a demister body 102, a cross-shaped square tube 101 and a plurality of spray heads 104 located at the bottom of the cross-shaped square tube 101, the spray heads 104 spray the surface of the demister body 102 downward for flushing, a rotary flushing mechanism is arranged inside the tower body 103, and the rotary flushing mechanism comprises a rotating component and a swinging component;

[0042] The swing assembly includes a cross bar 214 and a triangular block 210. An outer column 209 is fixedly provided at the end of the cross bar 214. The outer column 209 can contact the triangular block 210. The three outer corners of the triangular block 210 are rounded to facilitate the outer column 209 to pass through the triangular block 210.

[0043] A connecting hose 213 is fixedly provided between the top of the spray head 104 and the cross-shaped square tube 101. The connecting hose 213 can ensure that the spray head 104 always maintains connection with the cross-shaped square tube 101 when swinging. A plurality of sets of limiting vertical plates 217 are fixedly provided at the bottom of the cross-shaped square tube 101. The cross-shaped bar 214 is located between the two sets of limiting vertical plates 217. A plurality of sets of springs 219 are also fixedly provided between the spray head 104 and the cross-shaped square tube 101. When the outer column 209 on the cross-shaped bar 214 hits the triangular block 210 and is lifted up, the spring 219 close to the lifted outer column 209 is stretched. When the outer column 209 is separated from the triangular block 210, the spring 219 is reset, so as to facilitate the swinging of the cross-shaped bar 214 and the spray head 104. An L-shaped rod is fixedly provided on the triangular block 210.

[0044] Embodiment 2

[0045] Based on Example 1, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig.12 The rotating assembly includes a top bearing 201 and a tube body 203 installed on the inner wall of the tower body 103. The top bearing 201 can facilitate the rotation of the cross-shaped square tube 101. An outer gear ring 206 is fixedly arranged on the inner wall of the top bearing 201. An inclined rod is fixedly arranged between the end of the cross-shaped square tube 101 and the outer gear ring 206. A double-headed motor 207 is fixedly arranged on the inner wall of the tower body 103. The double-headed motor 207 can drive the upper gear 215 and the lower gear 307 to rotate. An upper gear 215 is fixedly arranged on the top of the double-headed motor 207, and the upper gear 215 is meshed with the outer gear ring 206.

[0046] A connecting ring frame 208 is disposed outside the tube body 203, and the end of the connecting ring frame 208 is fixedly connected to the inner wall of the outer gear ring 206. The tube body 203 is fixed on the top of the cross-shaped square tube 101. A bearing frame 200 is also disposed outside the tube body 203. The bearing frame 200 can support the tube body 203, and the end of the bearing frame 200 is fixedly connected to the inner wall of the tower body 103.

[0047] A rotating joint 204 is provided at the top of the tube body 203. Through the rotating joint 204, the fixed water inlet pipe 202 and the rotating tube body 203 can maintain stable water transportation. The water inlet pipe 202 is provided at the top of the rotating joint 204, and the end of the water inlet pipe 202 extends to the outside of the tower body 103. An inclined nozzle 218 is fixedly provided on the surface of the cross-shaped square tube 101. Through the inclined nozzle 218, the inclined nozzle 218 can also be driven to rotate during the rotation and flushing process to spray water on the inner wall of the tower body 103. The water splashes onto the outer gear ring 206 and the upper gear 215, and the retired soldiers attached to the outer gear ring 206 and the upper gear 215 are flushed to prevent foreign objects from causing wear to the outer gear ring 206 and the upper gear 215. A connecting pipe is fixedly provided on the inclined nozzle 218, and the end of the connecting pipe extends to the inside of the cross-shaped square tube 101.

[0048] The rotating component also includes a cleaning piece, which includes a cleaning brush 211. The rotating cleaning brush 211 can clean the surface of the defogger body 102. The bottom of the cleaning brush 211 contacts the upper surface of the defogger body 102. Connecting columns 216 are fixedly provided on the top of both ends of the cleaning brush 211. Two groups of arc plates 212 are fixedly provided on the cross-shaped square tube 101, and the top of the connecting column 216 is fixedly connected to the arc plate 212.

[0049] The rotating flushing mechanism designed in the present invention can rotate the multiple groups of spray heads 104 on the cross-shaped square tube 101 to flush the surface of the defogger body 102 below, making the cross-shaped square tube 101 rotate stably, and at the same time, the cleaning brush 211 below can be rotated to clean the upper surface of the defogger body 102, thereby increasing the flushing effect of the droplets and liquid droplets containing corrosive components on the upper surface of the defogger body 102, and during the rotation process, the multiple groups of spray heads 104 can be swung to flush the defogger body 102 below, thereby increasing the flushing coverage of the defogger body 102 and further increasing the flushing effect.

[0050] During use, a water pipe for conveying water is connected to the end of the water inlet pipe 202, and then water is conveyed to the spray head 104 through the rotary joint 204, the pipe body 203, the cross-shaped square pipe 101 and the connecting hose 213, and then the surface of the demister body 102 below is washed. During the washing process, the double-headed motor 207 is turned on to drive the upper gear 215 on the top to rotate, and the upper gear 215 drives the outer gear ring 206 to rotate. The connecting ring frame 208 and the inclined rod located outside the outer gear ring 206 can drive the cross-shaped square pipe 101 and the cross-shaped bar 214 below and the spray head 104 to rotate for rotational washing, and at the same time, the arc plate 212, the connecting column 216 and the cleaning brush 211 below can be driven to rotate to clean the upper surface of the demister body 102. While cleaning, the water sprayed from the upper spray head 104 can wash away the corrosive droplets and liquid droplets on the upper surface of the demister body 102.

[0051] During the rotary flushing process, the four groups of outer columns 209 at the ends of the cross-shaped bar 214 will be driven to rotate, and then the outer columns 209 will hit the triangular block 210 on the L-shaped rod. At this time, the outer columns 209 that touch the triangular block 210 are pushed upward by the triangular block 210, driving the cross-shaped bar 214 to tilt, and then the cross-shaped bar 214 will tilt toward the triangular block 210, thereby driving multiple groups of spray heads 104 to tilt. Then, when the outer columns 209 that touch the triangular block 210 are separated from the triangular block 210, they move downward and reset. At this time, the inclined cross-shaped bar 214 and the inclined spray head 104 are reset to the original position. This is repeated to complete the swinging of the spray head 104. The water sprayed by the swinging spray head 104 can cover a larger surface area of ​​the demister body 102, thereby increasing the flushing effect.

[0052] Embodiment 3

[0053] Based on Example 2, please refer to Figure 1-Figure 6 A cleaning assembly is provided at the bottom of the defogger body 102, and the cleaning assembly includes an inner gear ring 302, and a strip brush 308 is fixedly provided on the top of the inner wall of the inner gear ring 302, a vertical rod 306 is fixedly provided at the bottom of the double-headed motor 207, and a lower gear 307 is fixedly provided at the bottom of the vertical rod 306, and the lower gear 307 is meshed with the inner gear ring 302, and two groups of support rings 300 are fixedly provided on the outer sleeve of the inner gear ring 302, and two groups of arc grooves 220 are opened on the inner wall of the tower body 103. When the inner gear ring 302 rotates, it will also drive the two groups of external support rings 300 to rotate in the arc groove 220 on the inner wall of the tower body 103, and the support ring 300 is located inside the arc groove 220.

[0054] The present invention has a cleaning component designed so that when the cross-shaped square tube 101 is rotating and flushing, it can drive the strip brush 308 below to rotate and clean the lower surface of the demister body 102, thereby removing the corrosive components attached to the lower surface, and cooperating with the water flushing sprayed by the upper spray head 104 to increase the cleanliness of the flushing of the demister body 102.

[0055] When the working end of the double-headed motor 207 rotates, it will also drive the vertical rod 306 to rotate, which in turn can drive the lower gear 307 to rotate, and then drive the inner ring gear 302 to rotate, and the inner ring gear 302 drives the strip brush 308 to rotate, and then the rotating strip brush 308 can clean the lower surface of the defogger body 102, and by brushing with the water sprayed from the spray head 104, the cleanliness of the defogger body 102 is increased.

[0056] Embodiment 4

[0057] Based on Example 3, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 Auxiliary flushing parts are arranged on the demister body 102, and the auxiliary flushing parts include multiple groups of bottom pipes 404. Multiple groups of hollow plates 400 are fixedly arranged on the top of the bottom pipes 404. Multiple groups of nozzles 403 are fixedly arranged on both sides of the hollow plates 400. The nozzles 403 spray water to the bent part inside the demister body 102 for flushing. A vertical pipe 402 is fixedly arranged at the bottom of the water inlet pipe 202, and a valve 405 is arranged on the vertical pipe 402. A horizontal pipe 401 is fixedly arranged at the bottom of the vertical pipe 402, and the end of the horizontal pipe 401 extends to the inside of the tower body 103, and the horizontal pipe 401 is connected to the bottom pipe 404.

[0058] The present invention adopts a designed auxiliary flushing part. When the water sprayed from the spray head 104 is difficult to spray directly onto the inner surface of the demister body 102 during the flushing process, water is transported to the hollow plate 400 through the cross pipe 401, and water is sprayed to the part of the demister body 102 that is difficult to flush directly through the nozzle 403, thereby improving the flushing performance of the demister body 102.

[0059] During use, since the interior of the demister body 102 is in a bent state, it is difficult to directly flush the internal surface of the demister body 102 through the spray head 104. At this time, the valve 405 is opened, and then the water is transported to the multiple groups of bottom pipes 404 through the vertical pipe 402 and the horizontal pipe 401. The water is then diverted and transported to the hollow plate 400 through the bottom pipe 404. Then the hollow plate 400 transports the water to the multiple groups of nozzles 403. The nozzles 403 spray water outward to flush the internal surface of the demister body 102, thereby increasing the flushing performance of the demister body 102.

[0060] In this embodiment, a tower top 100 is fixedly disposed on the top of the tower body 103 , and the demister body 102 is fixed inside the tower body 103 .

[0061] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A rotary flushing device for a wet desulfurization demister, comprising a tower body (103), a demister body (102), a cross-shaped square tube (101), and a plurality of groups of spray heads (104) located at the bottom of the cross-shaped square tube (101), characterized in that: A rotating flushing mechanism is provided inside the tower body (103), and the rotating flushing mechanism comprises: A rotating assembly is arranged inside the tower body (103) and is used to drive the cross-shaped square tube (101) to rotate; A swing assembly, disposed at the bottom of the rotating assembly, for driving the spray head (104) to swing; The swing assembly comprises a cross-shaped bar (214) and a triangular block (210); the cross-shaped bar (214) is used to fix the spray head (104); and an outer column (209) is fixedly provided at the end of the cross-shaped bar (214).

2. The rotary flushing device for a wet desulfurization demister according to claim 1, characterized in that: A connecting hose (213) is fixedly arranged between the top of the spray head (104) and the cross-shaped square tube (101), a plurality of groups of position-limiting vertical plates (217) are fixedly arranged at the bottom of the cross-shaped square tube (101), a plurality of groups of springs (219) are also fixedly arranged between the spray head (104) and the cross-shaped square tube (101), and an L-shaped rod is fixedly arranged on the triangular block (210).

3. The rotary flushing device for a wet desulfurization demister according to claim 1, characterized in that: The rotating assembly comprises a top bearing (201) and a tube body (203) mounted on the inner wall of the tower body (103); an outer toothed ring (206) is fixedly arranged on the inner wall of the top bearing (201); and an inclined rod is fixedly arranged between the end of the cross-shaped square tube (101) and the outer toothed ring (206); A double-headed motor (207) is fixedly disposed on the inner wall of the tower body (103), and an upper gear (215) is fixedly disposed on the top of the double-headed motor (207).

4. The rotary flushing device for a wet desulfurization demister according to claim 3 is characterized in that: A connecting ring frame (208) is provided outside the tube body (203), and an end of the connecting ring frame (208) is fixedly connected to the inner wall of the outer gear ring (206); The tube body (203) is fixed on the top of the cross-shaped square tube (101), and a bearing frame (200) is also arranged outside the tube body (203).

5. The rotary flushing device for a wet desulfurization demister according to claim 1, characterized in that: A rotating joint (204) is provided at the top of the tube body (203), and a water inlet pipe (202) is provided at the top of the rotating joint (204); An oblique nozzle (218) is fixedly arranged on the surface of the cross-shaped square tube (101), and a connecting pipe is fixedly arranged on the oblique nozzle (218).

6. The rotary flushing device for a wet desulfurization demister according to claim 1, characterized in that: The rotating assembly further comprises a cleaning piece, which comprises a cleaning brush (211). Connecting columns (216) are fixedly arranged at the tops of both ends of the cleaning brush (211). Two groups of arc-shaped plates (212) are fixedly arranged on the cross-shaped square tube (101).

7. The rotary flushing device for a wet desulfurization mist eliminator according to claim 3, characterized in that: A cleaning assembly is arranged at the bottom of the demister body (102), and the cleaning assembly comprises an inner gear ring (302), a strip brush (308) is fixedly arranged at the top of the inner wall of the inner gear ring (302), a vertical rod (306) is fixedly arranged at the bottom of the double-headed motor (207), and a lower gear (307) is fixedly arranged at the bottom of the vertical rod (306).

8. The rotary flushing device for a wet desulfurization mist eliminator according to claim 7, characterized in that: Two groups of support rings (300) are sleeved and fixed on the outside of the inner gear ring (302), and two groups of arc-shaped grooves (220) are opened on the inner wall of the tower body (103), and the support rings (300) are located inside the arc-shaped grooves (220).

9. The rotary flushing device for a wet desulfurization demister according to claim 1, characterized in that: An auxiliary flushing component is provided on the demister body (102), and the auxiliary flushing component includes a plurality of bottom pipes (404), a plurality of hollow plates (400) are fixedly provided on the top of the bottom pipes (404), and a plurality of nozzles (403) are fixedly provided on both sides of the hollow plates (400); A vertical pipe (402) is fixedly arranged at the bottom of the water inlet pipe (202), a valve (405) is arranged on the vertical pipe (402), a horizontal pipe (401) is fixedly arranged at the bottom of the vertical pipe (402), and an end of the horizontal pipe (401) extends to the inside of the tower body (103).

10. The rotary flushing device for a wet desulfurization mist eliminator according to claim 1, characterized in that: A tower top (100) is fixedly arranged on the top of the tower body (103), and the demister body (102) is fixed inside the tower body (103).

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