Wet type electrostatic dust collection device for incineration flue gas treatment

Abstract

A wet-type electrostatic dust collection device for incineration flue gas treatment comprises a tank body, a plurality of supporting legs are fixedly installed on the tank body, an air inlet pipe is installed on the lower side of the tank body in a communicated mode, an air outlet pipe is installed on the top side of the tank body in a communicated mode, the bottom of the tank body is in an inverted cone shape and is provided with a sewage draining exit, and a plurality of grounded anode pipes are fixedly installed in the tank body. The water outlet pipe is simple in structure and ingenious in conception, when the water outlet pipe does not need to be washed, the inverted-cone-shaped block and the inner wall of the water outlet pipe can be tightly attached together, so that dust particles cannot be attached to the water outlet position, the influence of the dust particles on the water outlet position is reduced, and water can be sprayed out by forming a gap between the inverted-cone-shaped block and the water outlet pipe during washing; in addition, the water wheel drives the water outlet pipe on the box body to revolve, so that the lower ends of all the anode pipes can be flushed, a large number of nozzles are not needed, the manufacturing cost is low, actual requirements can be met, and the device is suitable for popularization.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal devices, specifically a wet electrostatic dust removal device for treating incineration flue gas. Background Technology

[0002] An electrostatic precipitator is an industrial device that relies on electrostatic force to collect dust. Its operation includes the following process: (1) A high voltage from a high-voltage power supply is applied to the corona wire, causing corona discharge and forming an electric field; (2) Dust in the flue gas flowing through the electric field is charged by ions generated by the corona discharge; (3) The charged dust is collected onto the anode tube under the action of the electric field; (4) The dust collected on the anode tube detaches from the electrode plate. Existing wet electrostatic precipitators use a flowing water film to remove dust. For wet electrostatic precipitators, the exhaust gas inlet is usually located on the lower side of the precipitator shell. Because the dust concentration is higher when the exhaust gas passes through the lower side of the anode tube, the dust collected on the lower side of the anode tube... The dust is more abundant, but the spray pipe set above the anode tube has low rinsing efficiency for the lower side of the anode tube, resulting in some dust still adsorbing on the lower side of the anode tube. Patent CN208161838U, "A Wet Electrostatic Precipitator", discloses a wet electrostatic precipitator that can rinse the lower end of the anode tube. However, the nozzle located at the bottom of the device will first come into contact with the incoming flue gas, making it easy for a large number of particles to adhere around the nozzle outlet. Over time, the outlet narrows, affecting the water output, and may even completely block the nozzle, resulting in a reduction in cleaning effect. Therefore, we designed a wet electrostatic precipitator that is not prone to nozzle clogging. Utility Model Content

[0003] This invention provides a wet electrostatic precipitator for treating incineration flue gas, which addresses the deficiencies in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment, including tank body, several support legs are fixedly installed on tank body, the lower side of tank body is connected and is installed into gas pipe, top side is connected and is installed into gas pipe, tank body bottom is inverted cone, and is equipped with blowdown, several anode tubes of ground are fixedly installed in tank body, cathode line is respectively equipped in anode tube, cathode line is connected high voltage direct current outside, the top of tank body is equipped with spraying mechanism, the lower side of anode tube is equipped with the flushing mechanism that it washes, flushing mechanism includes water delivery pipe, water delivery pipe is arranged below anode tube, vertical pipe is connected and is installed on water delivery pipe, rotating tube is rotatably installed in vertical pipe by sealing bearing, water wheel is equipped in water delivery pipe, water wheel is fixedly connected with rotating tube, rotating tube is connected and is installed box, one end of several water outlet pipes is connected in box, the other end of water outlet pipe is equipped with the inverted cone block that sticks, inverted cone block is fixedly installed vertical rod respectively on, piston plate is airtight and is slidably installed in box, vertical rod is fixedly connected with piston plate respectively, several through slots are formed on piston plate, piston column is fixedly installed in box corresponding to through slot, piston column is inserted into corresponding through slot, piston plate is elastically connected with box by several springs.

[0006] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment as described above, and the spraying mechanism includes water supply pipe, water supply pipe is connected and is installed on water supply pipe frame, several nozzles are connected and are installed on water supply pipe frame.

[0007] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment as described above, and several sliding holes are formed on the piston plate, the sliding hole is slidably equipped with guide rod, and the guide rod is fixedly installed on the box.

[0008] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment as described above, and the recess is formed on the periphery of the piston plate, and the rubber ring is installed in the recess.

[0009] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment as described above, and the rotating shaft is fixedly installed on the water wheel, the rotating shaft extends to the outside of the box, and is rotatably connected with the reserved hole on the box by sealing bearing, the scraper is fixedly installed on the rotating shaft, and the scraper is slidably contacted with the bottom of the tank.

[0010] The utility model provides a kind of wet electrostatic precipitation device for incineration flue gas treatment as described above, and the both ends of the piston plate and the both ends of the inner wall of the box are arc-shaped.

[0011] The utility model has the advantages that: the utility model is simple in structure, and ingenious in design, when not needing to flush, inverted cone block and the inner wall of water outlet pipe can be closely attached together, so that dust particles cannot be attached at water outlet, thereby reducing the influence of dust particles on water outlet, when flushing, the gap between inverted cone block and water outlet pipe is generated, i.e. water can be sprayed out, in addition, the water outlet pipe on the box is driven to revolve by water wheel, i.e. the flushing of the lower end of all anode tubes can be realized, without using a large number of nozzles, the manufacturing cost is low, the actual demand can be met, and the utility model is suitable for promotion. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0013] Figure 1 is a structural schematic diagram of the present application; Figure 2 is Figure 1 A view of Figure 3 is a schematic diagram of the flushing mechanism; Figure 4 is Figure 3 B view of Figure 5 is a schematic diagram of the box body; Figure 6 is a schematic diagram of the water supply pipe rack.

[0014] Reference signs: 1, tank body, 2, air inlet pipe, 3, air outlet pipe, 4, sewage outlet, 5, anode pipe, 6, cathode wire, 7, support leg, 8, water delivery pipe, 9, vertical pipe, 10, rotating pipe, 11, water wheel, 12, box body, 13, water outlet pipe, 14, inverted cone block, 15, vertical rod, 16, piston plate, 17, transparent groove, 18, piston column, 19, spring, 20, water supply pipe, 21, water supply pipe rack, 22, nozzle, 30, sliding hole, 31, guide rod, 40, rubber ring, 50, rotating shaft, 51, scraper, 70, baffle. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] A wet-type electrostatic precipitation device for incineration flue gas treatment, like Figure 1 , 2, 3, 4, 5, 6, including the tank body 1, a plurality of support legs 7 are fixedly installed on the tank body 1, the lower side of the tank body 1 is communicatedly installed with the air inlet pipe 2, the top side is communicatedly installed with the air outlet pipe 3, the bottom of the tank body 1 is inverted conical and is provided with a blowdown port 4, a plurality of grounded anode pipes 5 are fixedly installed in the tank body 1, adjacent anode pipes 5 are fixedly connected, the two ends of the column surrounded by the anode pipes 5 are fixedly installed with annular baffles 70 respectively to ensure that there is no gap between the anode pipes 5 and the inner wall of the tank body 1, the outer periphery of the baffle 70 is fixedly connected with the inner wall of the tank body 1, the inner periphery of the baffle 70 is fixedly connected with the anode pipe 5, cathode wires 6 are respectively arranged in the anode pipes 5, the cathode wires 6 are connected with high-voltage direct current, the cathode wires 6, the anode pipes 5 and the installation mode are all prior art and will not be described in detail, a spraying mechanism is arranged at the top in the tank body 1, a flushing mechanism for flushing the anode pipes 5 is arranged below the anode pipes 5, the flushing mechanism comprises a water delivery pipe 8, the water delivery pipe 8 is arranged below the anode pipes 5, a vertical pipe 9 is communicatedly installed on the water delivery pipe 8, a rotating pipe 10 is rotatably installed in the vertical pipe 9 through a sealing bearing, a water wheel 11 is arranged in the water delivery pipe 8, the water wheel 11 is fixedly connected with the rotating pipe 10, the water wheel 11 is fixedly connected with the rotating pipe 10 through a plurality of short rods, the water wheel 11, the rotating pipe 10 and the tank body 1 are coaxially arranged, a box body 12 is communicatedly installed on the rotating pipe 10, one end of a plurality of water outlet pipes 13 is communicatedly connected with the box body 12, the other end of the water outlet pipe 13 is provided with an inverted conical block 14 which is attached, the inner wall of the top end of the water outlet pipe 13 is also inverted conical, vertical rods 15 are respectively fixedly installed on the inverted conical block 14, a piston plate 16 is airtightly and slidably installed in the box body 12, the vertical rods 15 are respectively fixedly connected with the piston plate 16, a plurality of through grooves 17 are formed in the piston plate 16, piston columns 18 are fixedly installed in the box body 12 corresponding to the through grooves 17, the piston columns 18 are inserted into the corresponding through grooves 17, the piston plate 16 is elastically connected with the box body 12 through a plurality of springs 19, the springs 19 are respectively sleeved on the piston columns 18, one end of the spring 19 is fixedly connected with the inner wall of the box body 12, the other end of the spring 19 is fixedly connected with the piston plate 16.When the lower end of the anode tube 5 needs to be flushed, the water source is connected into the water delivery pipe 8, the water enters the box body 12 through the rotating pipe 10, the water pushes the piston plate 16 to move upward, the spring 19 is stretched, the piston plate 16 drives the inverted cone block 14 to move upward through the vertical rod 15, and the inverted cone block 16 is separated from the water outlet pipe 10. When the water pushes the piston plate 16, the through slot 17 is completely separated from the piston column 18, the water flows to the upper side of the piston plate 16 through the through slot 17, and finally enters the water outlet pipe 13 and is sprayed from the gap between the inverted cone block 14 and the water outlet pipe 13. The side wall of the inverted cone can guide the direction of the water spray, so that the sprayed water is easy to spray on the inner wall of the anode tube 5. With the delivery of the water source, the water wheel 11 rotates, the water wheel drives the rotating pipe 10 to rotate, thereby driving the box body 12 and the water outlet pipe 13 to revolve, and all the anode tubes 5 are flushed. Only one water outlet pipe 13 is needed to complete the flushing of the anode tube 5. When flushing is not needed, the water supply is turned off, and the piston plate 16 is reset under the action of the spring 19, the piston column 18 is inserted into the through slot 17 again, the piston plate 16 drives the inverted cone block 14 to reset through the vertical rod 15, and the inverted cone block 14 is recombined with the inner wall of the water outlet pipe 13, so that the dust particles are not attached to the water outlet. When the flue gas is de-dusted, the flue gas enters the tank body 1 through the air inlet pipe 2, and then enters the anode tube 5. The negative charge generated by the cathode wire 6 combines with the dust particles, and moves under the attraction of the anode tube 5. Then the dust particles are attached to the inner wall of the anode tube 5. The liquid sprayed by the spraying mechanism forms a liquid film on the inner wall of the anode tube 5, and the dust particles are washed away. The purified gas flows to the top of the tank body 1 and is discharged from the air outlet pipe 3. The waste liquid generated by flushing is discharged from the bottom of the drain 4 for subsequent treatment.

[0017] Specifically, as shown in the figure, the spraying mechanism of the embodiment comprises a water supply pipe 20, a water supply pipe frame 21 is connected and installed on the water supply pipe 20, and a plurality of nozzles 22 are connected and installed on the water supply pipe frame 21. Water is supplied to the water supply pipe 20, and the water is sprayed out of the nozzles 22 after passing through the water supply pipe frame 21. The water forms a liquid film on the inner wall of the anode tube 5, and the liquid film washes away the particles attached to the anode tube 5.

[0018] Specifically, as shown in the figure, a plurality of sliding holes 30 are formed in the piston plate 16, and a guide rod 31 is slidably arranged in the sliding hole 30. The guide rod 31 is fixedly installed on the box body 12, and the two ends of the guide rod 31 are fixedly connected to the inner wall of the box body 12. When the piston plate 16 is moved by the water, the guide rod 31 plays a guiding role, so that the piston plate 16 moves more stably, and the piston plate 16 is easy to reset after being separated from the through slot 18.

[0019] Further, as shown in the figure, a groove is formed in the outer periphery of the piston plate 16, and a rubber ring 40 is installed in the groove. The rubber ring 40 can ensure the sealing between the piston plate 16 and the inner wall of the box body 12.

[0020] Further, as shown in the figure, the water wheel 11 is fixedly installed with a rotating shaft 50, the rotating shaft 50 is fixedly connected with the inner periphery of the water wheel 11 through a plurality of connecting rods, the rotating shaft 50 is coaxially arranged with the water wheel, the rotating shaft 50 extends out of the box body 12 and is rotatably connected with a reserved hole on the box body 12 through a sealing bearing, the scraper 51 is fixedly installed on the rotating shaft 50, the scraper 51 is fixedly connected with the rotating shaft 50 through a connecting rod, and the scraper 51 is in sliding contact with the bottom of the tank body 1. When the water drives the water wheel 11 to rotate, the water wheel 11 drives the rotating shaft 50 to rotate, thereby driving the scraper 51 to revolve, thereby scraping off the particles on the inverted cone of the tank body 1, and avoiding the particles from adhering to the inner wall of the tank body 1.

[0021] Further, as shown in the figure, the two ends of the piston plate 16 and the two ends of the inner wall of the box body 12 are arc-shaped. The two ends of the piston plate 16 and the two ends of the inner wall of the box body 12 are arc-shaped, and the sealing performance is better.

[0022] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A wet electrostatic precipitator for treating incineration flue gas, comprising a tank (1), several support legs (7) fixedly installed on the tank (1), an air inlet pipe (2) connected to the lower side of the tank (1), an air outlet pipe (3) connected to the top side of the tank (1), the bottom of the tank (1) being inverted conical and having a drain outlet (4), several grounded anode tubes (5) fixedly installed inside the tank (1), each anode tube (5) having a cathode wire (6) connected to a high-voltage direct current, a spraying mechanism at the top of the tank (1), and a rinsing mechanism for rinsing the anode tubes (5) below the anode tubes (5), characterized in that: The flushing mechanism comprises a water delivery pipe (8) arranged below the anode pipe (5), a vertical pipe (9) is connected to the water delivery pipe (8), a rotating pipe (10) is rotatably arranged in the vertical pipe (9) through a sealing bearing, a water wheel (11) is arranged in the water delivery pipe (8) and fixedly connected to the rotating pipe (10), a box body (12) is connected to the rotating pipe (10), one end of a plurality of water outlet pipes (13) is connected to the box body (12), the other end of the water outlet pipes (13) is provided with a matched inverted conical block (14), the inverted conical block (14) is fixedly provided with a vertical rod (15), a piston plate (16) is airtightly and slidably arranged in the box body (12), the vertical rod (15) is fixedly connected to the piston plate (16), a plurality of through grooves (17) are formed in the piston plate (16), a piston column (18) is fixedly arranged in the box body (12) corresponding to the through grooves (17), the piston column (18) is inserted into the corresponding through groove (17), and the piston plate (16) is elastically connected to the box body (12) through a plurality of springs (19).

2. A wet-type electrostatic precipitator for incineration flue gas treatment according to claim 1, characterized in that: The spraying mechanism comprises a water supply pipe (20), and a water supply pipe frame (21) is connected to the water supply pipe (20), and a plurality of nozzles (22) are connected to the water supply pipe frame (21).

3. A wet electrostatic precipitator for incineration flue gas treatment according to claim 1, characterized in that: A plurality of sliding holes (30) are formed in the piston plate (16), and a guide rod (31) is slidably arranged in the sliding hole (30) and fixedly arranged on the box body (12).

4. A wet electrostatic precipitator for treating incineration flue gas according to claim 3, characterized in that: A groove is formed in the outer periphery of the piston plate (16), and a rubber ring (40) is arranged in the groove.

5. A wet electrostatic precipitator for treating incineration flue gas according to claim 1, characterized by: A rotating shaft (50) is fixedly arranged on the water wheel (11) and extends out of the box body (12) and is rotatably connected to a reserved hole in the box body (12) through a sealing bearing, a scraper (51) is fixedly arranged on the rotating shaft (50) and slidably contacts the bottom of the tank body (1).

6. A wet-type electrostatic precipitator for incineration flue gas treatment according to claim 1, characterized in that: Both ends of the piston plate (16) and both ends of the inner wall of the box body (12) are arc-shaped.

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