Waste gas and wastewater treatment device and method for domestic waste incineration power plant

Abstract

The invention discloses a waste gas and wastewater treatment device and method for a domestic waste incineration power plant, which relates to the technical field of waste gas treatment, and includes a cylinder, and also includes an air inlet pipe fixedly installed on the side of the cylinder and connected to the inside of the cylinder, and an air outlet pipe is fixedly connected to the top of the cylinder. The advantages are: the invention adopts mobile jet backwashing, and adjusts the jet pressure during the backwashing process, so that the backwashing cleaning efficiency of the filter cloth is improved, and at the same time, the filter cloth can be vibrated and knocked during the backwashing process to accelerate the falling of ash on the filter cloth. In addition, electrostatic adsorption is used to adsorb the ash generated by backwashing, reduce the flying of ash, and is conducive to improving the filtering and treatment efficiency of the waste gas.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas treatment, and in particular to a waste gas and wastewater treatment device and method for a domestic waste incineration power plant. Background Art

[0002] Domestic waste is a commonly used fuel for thermal power generation. It can not only be processed, but also the heat from incineration can be used to generate electricity. Since a large amount of harmful waste gas will be generated during the incineration process, the waste gas needs to be purified before it is discharged. Since there are more ash in the waste gas during incineration, filtering equipment is needed to filter the waste gas before purification to remove most of the ash in the waste gas.

[0003] The commonly used filtering equipment is a bag dust collector, which sends dust-containing exhaust gas into a box through an air inlet pipe. There are several bags for dust removal in the box. The air inlet flow rate of the bags closer to the air inlet pipe is relatively large, and the impact they receive is more severe, which makes the bags prone to damage. However, the air inlet volume of the bags farther from the air inlet pipe is smaller, and the filtration efficiency is low.

[0004] Therefore, announcement number CN110075626A discloses a bag dust collector, which includes a box body and a plurality of bags arranged in the box body, a partition plate fixedly connected to the inner wall of the box body, an air inlet pipe arranged on one side of the box body, a fan fixedly connected to the air inlet pipe, two first branch pipes fixedly connected to the air inlet pipe, a first connecting pipe fixedly connected to the first branch pipe, two second branch pipes fixedly connected to both sides of the first connecting pipe and a second connecting pipe fixedly connected to the second branch pipe. The box body is divided into four chambers by three partition plates, the air inlet pipe sends the dust-containing exhaust gas into the first branch pipes on both sides respectively, the two first branch pipes evenly send the exhaust gas to the second branch pipes on both sides of the first branch pipe, and the four second branch pipes send the exhaust gas into the four chambers respectively, so that the air intake of the bags in the four chambers is more uniform.

[0005] By arranging a partition plate, an air inlet pipe, a first diversion pipe, a first connecting pipe, a second diversion pipe and a second connecting pipe, the partition plate divides the box into four chambers, the air inlet pipe sends the dust-containing exhaust gas into the first diversion pipes on both sides respectively, the two first diversion pipes evenly send the exhaust gas to the second diversion pipes on both sides of the first diversion pipe, and the four second diversion pipes send the exhaust gas into the four chambers respectively, so that the air intake volume of the cloth bags in the four chambers is more uniform; by arranging a fixing plate and a support rod, the cloth bags can be propped open, so that the exhaust gas can better pass through the cloth bags and then be sent out from the cloth bags, preventing the two side walls of the cloth bags from adhering together under the action of wind and affecting the filtration of the exhaust gas.

[0006] However, when the above-mentioned bag dust collector is used in practice, the dust adhering to the bags needs to be cleaned by jet backwashing equipment. When the jet backwashing is used to blow air to clean the dust on the bags, the high air pressure of the jet will cause dust to fly inside the bag dust collector, affecting the circulation of exhaust gas and reducing the exhaust gas treatment efficiency. At the same time, the single-point jet backwashing has low flushing efficiency, which will also affect the exhaust gas treatment.

[0007] Therefore, a new type of waste gas and wastewater treatment device and method for domestic waste incineration power plants can be used to solve the shortcomings of the prior art. Summary of the invention

[0008] The purpose of the present invention is to solve the problems existing in the prior art and to propose a waste gas and wastewater treatment device and method for a domestic waste incineration power plant.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] The waste gas and wastewater treatment device for a domestic waste incineration power plant comprises a cylinder, and also comprises an air inlet pipe fixedly installed on the side of the cylinder and connected to the inside of the cylinder, and an air outlet pipe fixedly connected to the top of the cylinder;

[0011] The filter part is installed inside the cylinder and is used to filter the ash in the flowing exhaust gas inside the cylinder. The filter part includes a filter cloth, and the filter cloth is cylindrical. The exhaust gas flows from the outside of the filter cloth to the inside, and the ash adheres to the outside of the filter cloth.

[0012] A backwashing unit is installed on the cylinder body and is used to backwash and clean the filter cloth. The backwashing unit is located inside the filter cloth and includes an air jet component, a rotating component and a vibrating component.

[0013] The cleaning part is installed inside the cylinder and is used to limit and collect the ash dropped by backwashing to prevent the ash from flying inside the cylinder. It can perform continuous ventilation and filtering operations without stopping and waiting. The cleaning part includes an ash discharge component and an ash suction component.

[0014] Preferably, an air intake pump is fixedly mounted on one end of the air intake pipe away from the cylinder, and the air intake pipe is designed to be inclined, forming a certain angle with the cylinder, and the angle is not less than fifteen degrees.

[0015] Preferably, a wire mesh cover is fixedly mounted on the inner side wall of the cylinder through a frame, the filter cloth is placed and fixed inside the wire mesh cover, and a supporting mesh cover is arranged inside the filter cloth to support the filter cloth.

[0016] Preferably, the jet assembly includes an electric push rod fixedly mounted on the top of the cylinder, a jet nozzle fixedly mounted on the telescopic end of the electric push rod, a gas cylinder fixedly mounted on the outside of the cylinder, a gas distribution control valve fixedly mounted on the gas cylinder, a first air guide pipe fixedly connected to the gas distribution control valve, an annular gas tank fixedly mounted on the top of the cylinder, the telescopic end of the electric push rod passes through the middle of the gas tank, the first air guide pipe is connected to the gas tank, and the gas tank and the jet nozzle are connected via a plurality of telescopic tubes.

[0017] Preferably, the rotating assembly includes a first fixed frame fixedly mounted on the bottom of the air nozzle, a second fixed frame fixedly mounted on the bottom of the first fixed frame, a plurality of first rotating shafts rotatably mounted between the first fixed frame and the second fixed frame, a guide plate fixedly mounted on each of the first rotating shafts, a diverter plate matched with the guide plate fixedly mounted inside the first fixed frame, a fixing ring fixedly mounted on the air nozzle, a motor fixedly mounted on the fixing ring, and an adjustment mechanism installed between the motor driving end and the plurality of first rotating shafts.

[0018] Preferably, the adjustment mechanism includes a rotating ring rotatably mounted on the first fixed frame, a plurality of second rotating shafts rotatably mounted on the rotating ring, each of the second rotating shafts is rotatably mounted with a connecting block via a connecting rod, each of the connecting rods is rotatably connected to the corresponding second rotating shaft, each of the connecting blocks is fixedly connected to the corresponding first rotating shaft, a gear ring is fixedly mounted on the rotating ring, and a gear meshing with the gear ring is fixedly mounted on the motor driving end.

[0019] Preferably, the vibration assembly comprises a third fixing frame rotatably mounted on the bottom of the second fixing frame, a plurality of guide plates are fixedly mounted on the third fixing frame, a rotating rod is rotatably mounted on the rotating ring, a screw is fixedly mounted on the rotating rod, and an incomplete toothed ring meshing with the gear is fixedly mounted on the rotating rod, a nut is threadedly rotatably mounted on the screw rod, a disc is fixedly mounted on the nut, a wind shield ring matched with the guide plate is fixedly mounted on the disc, and the wind shield ring is sleeved on the third fixing frame;

[0020] A plurality of shafts are rotatably mounted at the bottom of the third fixed frame, a spring coil is fixedly mounted between each of the shafts and the third fixed frame, a rotating rod is fixedly mounted on each of the shafts, a sliding groove is provided on the rotating rod, a sliding rod is slidably mounted in the sliding groove, a plurality of tension springs are fixedly mounted between the sliding rod and the rotating rod, and an impact plate matched with the filter cloth is fixedly mounted on each of the sliding rods.

[0021] Preferably, the ash discharge assembly comprises an ash discharge cylinder fixedly mounted at the bottom of the cylinder body, the bottom of the ash discharge cylinder is fixedly connected to an air suction pump, and the bottom of the air suction pump is fixedly connected to an ash discharge cylinder.

[0022] Preferably, the dust collection assembly includes an electrostatic adsorption cylinder fixedly installed inside the cylinder body, an air guide ring fixedly installed on the top of the electrostatic adsorption cylinder, the air guide ring is connected to the air distribution control valve through a second air guide pipe, an annular hole is opened at the bottom of the air guide ring, a guide plate matching the inner wall of the electrostatic adsorption cylinder is fixedly installed in the annular hole, and the guide plate passes through the electrostatic adsorption cylinder and extends into the interior of the electrostatic adsorption cylinder.

[0023] The present invention also provides a method for treating waste gas and wastewater in a domestic waste incineration power plant, comprising the waste gas and wastewater treatment device for a domestic waste incineration power plant, and further comprising the following steps:

[0024] S1. First, the exhaust gas is introduced into the cylinder through the air inlet pipe. Part of the ashes sink under the action of gravity, and part floats up. The floating exhaust gas will be filtered through the filter cloth and then discharged from the exhaust pipe;

[0025] S2. While filtering, the jet assembly sprays air from the inside to the outside of the filter cloth. The jet assembly also moves up and down inside the filter cloth to perform multi-point targeted backwashing. Then, the ash-absorbing assembly absorbs the splashed ash. At the same time, the rotation of the rotating assembly drives the vibration assembly to operate, impact and vibrate the filter cloth, making it easier for the ash on the filter cloth to fall off.

[0026] S3, after the ash on the filter cloth is cleaned, the ash is blown into the ash discharge assembly through the ash suction assembly, and then discharged from the cylinder through the ash discharge assembly.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] 1. When the device is treating incineration waste gas, an electric push rod is set to drive the air nozzle to move up and down inside the filter cloth, so as to intermittently jet clean the various parts of the filter cloth, effectively improving the cleaning efficiency of the filter cloth. At the same time, the electrostatic adsorption cylinder is used to adsorb the backwashing ash to prevent the ash from flying. In addition, the guide plate and the air guide ring are used to remove the ash adhering to the inner wall of the electrostatic adsorption cylinder.

[0029] 2. When the device is treating incineration waste gas, rotating gas can be ejected through the rotating guide plate to produce a certain scraping effect, scraping the inner wall of the filter cloth, and breaking the ashes stuck in the filter holes of the filter cloth. In addition, the angle of the guide plate can be changed to change the pressure of the gas ejected between the guide plates, and targeted jet cleaning can be performed according to the adhesion strength of the ashes at different positions of the filter cloth, so that the filter cloth can be cleaned more thoroughly.

[0030] 3. When the device is treating incineration waste gas, the rotating component and the vibrating component can impact the filter cloth or the wire mesh cover, causing the wire mesh cover or the filter cloth to vibrate, and the kinetic energy of the vibration can be used to shake off the ashes adhering to the filter cloth, further improving the efficiency of removing fox metal on the filter cloth, making the filter cloth cleaning more thorough.

[0031] In summary, the present invention adopts mobile jet backwashing, and adjusts the jet pressure during the backwashing process, so that the backwashing cleaning efficiency of the filter cloth is improved. At the same time, the filter cloth can be vibrated and knocked during the backwashing process to accelerate the falling of ash on the filter cloth. In addition, electrostatic adsorption is used to adsorb the ash generated by backwashing to reduce the flying of ash, which is beneficial to improving the filtering treatment efficiency of exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 This is a schematic diagram of the structure of the waste gas and wastewater treatment device for a domestic waste incineration power plant proposed by the present invention;

[0034] Figure 2 for Figure 1 A schematic detailed view of the plan structure along one of the angles;

[0035] Figure 3 for Figure 2 Detailed schematic diagram of the three-dimensional structure along the AA section;

[0036] Figure 4 for Figure 3 An enlarged structural schematic detail diagram of the middle ash discharge assembly;

[0037] Figure 5 for Figure 3 A detailed diagram of the enlarged structure of the middle gas cylinder, gas outlet pipe, gas distribution control valve and electrostatic suction cylinder;

[0038] Figure 6 for Figure 5 A schematic detailed view of the plan structure along one of the angles;

[0039] Figure 7 for Figure 6 Detailed schematic diagram of the structure along the BB section;

[0040] Figure 8 for Figure 7 Detailed schematic diagram of the structure after removing the static adsorption cylinder, wire mesh cover and filter cloth;

[0041] Fig. 9 for Figure 8 An enlarged schematic diagram of the structure after removing the gas cylinder, the gas distribution control valve, the first gas guide pipe and the electric push rod;

[0042] Fig.10 for Fig. 9 The enlarged structural schematic detailed diagram after removing the air nozzle, air tank and telescopic tube;

[0043] Fig.11 for Fig.10 A detailed schematic diagram of the structure after removing the fixing ring, wind shielding ring, screw rod and guide plate;

[0044] Fig.12 for Fig.11 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0045] Fig.13 for Fig.11 A detailed schematic diagram of the structure after removing the motor, gear ring, gear and rotating ring;

[0046] Fig.14 for Fig.13 A schematic detailed diagram of the planar structure of the middle splitter plate along one of the angles;

[0047] Fig.15 for Fig.10 A schematic detailed diagram of the enlarged structure of the vibration component;

[0048] Fig.16 for Fig.15 Detailed schematic diagram of the structure after being rotated to a certain angle;

[0049] Fig.17 for Fig.16 A detailed structural diagram after the middle rotating rod is rotated to a certain angle;

[0050] Fig.18 for Fig.17 A schematic detailed view of the plan structure along one of the angles;

[0051] Fig.19 for Fig.18 Detailed schematic diagram of the three-dimensional structure along the CC section.

[0052] In the figure: 1 cylinder, 2 air intake pump, 3 air intake pipe, 4 ash discharge assembly, 5 gas cylinder, 6 air outlet pipe, 7 electric push rod, 8 gas distribution control valve, 9 electrostatic adsorption cylinder, 10 wire mesh cover, 11 air guide ring, 12 gas tank, 13 first air guide pipe, 14 second air guide pipe, 15 filter cloth, 16 air nozzle, 17 telescopic pipe, 18 air injection assembly, 19 vibration assembly, 20 fixed ring, 21 motor, 22 rotating ring, 23 first fixed Frame, 24 first rotating shaft, 25 second rotating shaft, 26 guide plate, 27 second fixed frame, 28 wind shield ring, 29 rotating rod, 30 gear ring, 31 gear, 32 connecting block, 33 diverter plate, 34 guide plate, 35 incomplete gear ring, 36 rotating rod, 37 screw rod, 38 nut, 39 shaft rod, 40 spring coil, 41 impact plate, 42 sliding rod, 43 tension spring, 44 suction pump, 45 ash discharge cylinder, 46 ash discharge cylinder. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0054] Example 1: Reference Figure 1-Figure 3 , Figure 5-Figure 7 The waste gas and wastewater treatment device for a domestic waste incineration power plant includes a cylinder 1, an air inlet pipe 3 fixedly installed on the side of the cylinder 1 and connected to the inside of the cylinder 1, and an air outlet pipe 6 fixedly connected to the top of the cylinder 1.

[0055] An intake pump 2 is fixedly installed at one end of the intake pipe 3 away from the cylinder 1. The intake pipe 3 is designed to be inclined, and there is a certain angle between it and the cylinder 1, which is not less than fifteen degrees. The exhaust gas is introduced into the cylinder 1 at a certain pressure through the intake pump 2. Since there is a certain angle between the intake pipe 3 and the cylinder 1, and the outlet of the intake pipe 3 is inclined upward and in contact with the inner wall of the cylinder 1, the exhaust gas in the intake pipe 3 will spirally rise along the inner wall of the cylinder 1 after entering the cylinder 1, so that the exhaust gas generates a certain centrifugal force, which has the effect of preliminarily cleaning the ash in the exhaust gas.

[0056] A pump is fixedly installed at the end of the exhaust pipe 6 to extract the filtered exhaust gas from the cylinder 1. In this way, in conjunction with the air intake pump 2, the exhaust gas can have a certain flow rate in the cylinder 1 and ensure that the exhaust gas flow in the cylinder 1 is stable.

[0057] A wire mesh cover 10 is fixedly installed on the inner side wall of the cylinder 1 through a frame, and the filter cloth 15 is placed and fixed inside the wire mesh cover 10. A supporting mesh cover is arranged inside the filter cloth 15 to support the filter cloth 15. The function of the wire mesh cover 10 is to support the outside of the filter cloth 15. Together with the supporting mesh cover, the filter cloth 15 can maintain a cylindrical shape to avoid deformation of the filter cloth 15 due to excessive air flow, thereby affecting the ventilation efficiency.

[0058] The filter part is installed inside the cylinder 1 and is used to filter the ash in the flowing exhaust gas inside the cylinder 1. The filter part includes a filter cloth 15, and the filter cloth 15 is cylindrical. The exhaust gas flows from the outside of the filter cloth 15 to the inside, and the ash adheres to the outside of the filter cloth 15.

[0059] The exhaust gas introduced from the air inlet pipe 3 will flow from the outside of the filter cloth 15 to the inner wall of the filter cloth 15, and the ash in the exhaust gas will be intercepted by the filter cloth 15. The exhaust gas entering the filter cloth 15 is filtered exhaust gas, which can be discharged from the exhaust pipe 6 through the pump. At this time, only the exhaust gas with ash is filtered, not the purified exhaust gas. Therefore, the exhausted exhaust gas still needs to be purified. Before the exhaust gas enters the cylinder 1, the exhaust gas needs to be cooled to avoid the high temperature of the exhaust gas affecting the filter cloth 15.

[0060] Embodiment 2: This embodiment is different from the embodiment 1 in that: Figure 1-Figure 3 , Figure 5-Figure 19 The backwashing part is installed on the cylinder 1 and is used for backwashing and cleaning the filter cloth 15. The backwashing part is located inside the filter cloth 15 and includes an injection assembly 18, a rotating assembly and a vibration assembly 19.

[0061] The jet assembly 18 includes an electric push rod 7 fixedly installed on the top of the cylinder 1, and a jet nozzle 16 is fixedly installed on the telescopic end of the electric push rod 7. A gas cylinder 5 is fixedly installed on the outside of the cylinder 1, and a gas distribution control valve 8 is fixedly installed on the gas cylinder 5. The gas distribution control valve 8 is fixedly connected to a first air guide pipe 13, and an annular gas tank 12 is fixedly installed on the top of the cylinder 1. The telescopic end of the electric push rod 7 passes through the middle of the gas tank 12, the first air guide pipe 13 is connected to the gas tank 12, and the gas tank 12 and the jet nozzle 16 are connected through multiple telescopic tubes 17.

[0062] During backwashing, the gas cylinder 5 will introduce the gas from the first air duct 13 into the gas tank 12 through the gas distribution control valve 8, and then introduce the gas into the air nozzle 16 through the gas tank 12, and then spray it out through the air nozzle 16. The electric push rod 7 will drive the air nozzle 16 to move up and down inside the filter cloth 15 to perform a multi-point jet cleaning operation.

[0063] The rotating assembly includes a first fixed frame 23 fixedly mounted on the bottom of the air nozzle 16, a second fixed frame 27 fixedly mounted on the bottom of the first fixed frame 23, a plurality of first rotating shafts 24 rotatably mounted between the first fixed frame 23 and the second fixed frame 27, a guide plate 26 fixedly mounted on each first rotating shaft 24, a diverter plate 33 matched with the guide plate 26 fixedly mounted inside the first fixed frame 23 (the diverter plate 33 adopts a conical design, when the gas is sprayed on the diverter plate 33, part of the gas will flow along the surface of the diverter plate 33 under the action of resistance, while part of the gas will diffuse to the surroundings under the action of impact force), a fixing ring 20 fixedly mounted on the air nozzle 16, a motor 21 fixedly mounted on the fixing ring 20, and an adjustment mechanism installed between the driving end of the motor 21 and the plurality of first rotating shafts 24.

[0064] The gas ejected from the air nozzle 16 will enter the first fixed frame 23, and then be diverted by the diverter plate 33 inside the first fixed frame 23, so that part of the gas is diffused to the surroundings, and the diffused gas will be ejected through the guide plate 26. Since the angle of the guide plate 26 can be changed, the angle of the guide plate 26 can be adjusted during use to change the pressure of the gas ejection and the degree of rotation of the gas ejection, so as to remove ashes with different degrees of adhesion.

[0065] The adjusting mechanism includes a rotating ring 22 rotatably mounted on a first fixed frame 23, a plurality of second rotating shafts 25 are rotatably mounted on the rotating ring 22, a connecting block 32 is rotatably mounted on each second rotating shaft 25 via a connecting rod, each connecting rod is rotatably connected to the corresponding second rotating shaft 25, each connecting block 32 is fixedly connected to the corresponding first rotating shaft 24, a gear ring 30 is fixedly mounted on the rotating ring 22, and a gear 31 meshing with the gear ring 30 is fixedly mounted on the driving end of the motor 21.

[0066] The driving end of the motor 21 rotates to drive the gear 31 to rotate, thereby driving the rotating ring 22 to rotate through the gear ring 30. The rotation of the rotating ring 22 drives the second rotating shaft 25 to move along with the rotating ring 22, thereby changing the distance between the first rotating shaft 24 and the second rotating shaft 25. The supervision between the connecting rod and the connecting block 32 will also change, which will drive the connecting block 32 to rotate around the first rotating shaft 24, thereby driving the first rotating shaft 24 to rotate. The rotation of the first rotating shaft 24 drives the guide plate 26 to rotate, thereby changing the angle of the guide plate 26.

[0067] Changing the angle of the guide plate 26 can eject rotating gas, which produces a certain scraping effect, scrapes the inner wall of the filter cloth 15, and breaks the ashes stuck in the filter holes of the filter cloth 15. In addition, the angle of the guide plate 26 can be changed to change the pressure of the gas ejected between the guide plates 26, and targeted jet cleaning is performed according to the adhesion strength of the ashes at different positions of the filter cloth 15, so that the filter cloth 15 can be cleaned more thoroughly.

[0068] Meanwhile, during the backwashing process, the motor 21 is kept rotating back and forth, and air blowing backwashing with different pressures can be performed, so that a pulse effect can be formed, which is beneficial to the removal of ash on the filter cloth 15.

[0069] The vibration assembly 19 includes a third fixed frame rotatably mounted at the bottom of the second fixed frame 27, a plurality of guide plates 34 are fixedly mounted on the third fixed frame, a rotating rod 36 is rotatably mounted on the rotating ring 22 (although the rotating rod 36 will rotate with the rotating ring 22, the spacing between the rotating rod 36 and the driving end of the motor 21 will change, at this time, the meshing of the gear 31 and the incomplete gear ring 35 can be ensured by designing the tooth depth of the gear 31 and the incomplete gear ring 35, and since the rotation amplitude of the guide plate 26 is not large, the meshing of the gear 31 and the incomplete gear ring 35 can be ensured by setting the tooth depth), a screw rod 37 is fixedly mounted on the rotating rod 36, and an incomplete gear ring 35 meshing with the gear 31 is fixedly mounted on the rotating rod 36, a nut 38 is threadedly rotatably mounted on the screw rod 37, a disc is fixedly mounted on the nut 38, a wind shield ring 28 matching with the guide plate 34 is fixedly mounted on the disc, and the wind shield ring 28 is sleeved on the third fixed frame;

[0070] The gas flowing along the diverter plate 33 will enter the second fixed frame 27, then enter the third fixed frame through the second fixed frame 27, and be ejected from the guide plate 34 on the third fixed frame. Since the guide plate 34 is designed to be inclined, the impact force of the gas ejection will generate a resisting force on the guide plate 34, causing the guide plate 34 to rotate, thereby driving the third fixed frame to rotate.

[0071] As the motor 21 rotates back and forth, the rotating rod 36 is driven to rotate, and the rotating rod 36 drives the screw rod 37 to rotate, thereby driving the nut 38 to move back and forth on the screw rod 37, thereby driving the wind shield ring 28 to move up and down. The up and down movement of the wind shield ring 28 will block the gas ejected between the guide plates 34 to varying degrees, which will cause the rotation speed of the third fixed frame to change.

[0072] A plurality of shafts 39 are rotatably mounted at the bottom of the third fixed frame, a spring coil 40 is fixedly mounted between each shaft 39 and the third fixed frame, a rotating rod 29 is fixedly mounted on each shaft 39, a sliding groove is provided on the rotating rod 29, a sliding rod 42 is slidably mounted in the sliding groove, a plurality of tension springs 43 are fixedly mounted between the sliding rod 42 and the rotating rod 29, and an impact plate 41 matched with the filter cloth 15 is fixedly mounted on each sliding rod 42.

[0073] The change in the rotation speed of the third fixed frame means that the centrifugal force on the rotating rod 29 changes during rotation. Although there is a reset effect of the spring coil 40, the centrifugal force generated by the rotation is greater than the reset elastic force of the spring coil 40, so the rotating rod 29 is always in a straight state during rotation. At this time, the impact plate 41 will move to the side away from the rotating rod 29 under the action of centrifugal force, driving the sliding rod 42 to slide in the slide groove. With the use of the tension spring 43, the change in centrifugal force can change the displacement of the impact plate 41, thereby intermittently and differently impacting the filter cloth 15, causing the filter cloth 15 to vibrate and accelerate the falling of ash on the filter cloth 15.

[0074] Embodiment 3: This embodiment is different from the technical solution of Embodiment 2 in that: Figure 1-Figure 3 , Figure 4 , Figure 7 The cleaning part is installed inside the cylinder 1 and is used to limit and collect the ash dropped by backwashing to prevent the ash from flying inside the cylinder 1. It can perform continuous ventilation and filtering operations. The cleaning part includes an ash discharge component 4 and an ash suction component.

[0075] The dust suction assembly includes an electrostatic adsorption cylinder 9 fixedly installed inside the cylinder body 1, an air guide ring 11 is fixedly installed on the top of the electrostatic adsorption cylinder 9, the air guide ring 11 is connected to the air distribution control valve 8 through a second air guide pipe 14, an annular hole is opened at the bottom of the air guide ring 11, a guide plate matching the inner wall of the electrostatic adsorption cylinder 9 is fixedly installed in the annular hole, and the guide plate passes through the electrostatic adsorption cylinder 9 and extends into the interior of the electrostatic adsorption cylinder 9.

[0076] As the ashes on the filter cloth 15 fall, the ashes will fly between the electrostatic adsorption tube 9 and the filter cloth 15. At this time, the static electricity on the electrostatic adsorption tube 9 will adsorb the ashes, reducing the probability of the ashes flying. At the same time, the gas in the gas cylinder 5 will enter the air guide ring 11 through the second air guide pipe 14, and then enter the electrostatic adsorption tube 9 through the guide plate at the bottom of the air guide ring 11. The guide plate adopts an inclined design, and the air outlet is at a certain angle to the inner wall of the electrostatic adsorption tube 9 (the angle does not exceed ten degrees, so that the gas can flow along the inner wall of the electrostatic adsorption tube 9 without causing a large rebound). The gas flowing along the inner wall of the electrostatic adsorption tube 9 will blow off the ashes adsorbed on the inner wall of the electrostatic adsorption tube 9, thereby cleaning the electrostatic adsorption tube 9.

[0077] The ash discharge assembly 4 includes an ash discharge cylinder 46 fixedly installed at the bottom of the cylinder 1, and the bottom of the ash discharge cylinder 46 is fixedly connected to an air suction pump 44, and the bottom of the air suction pump 44 is fixedly connected to an ash discharge cylinder 45. The ash falling from the inner wall of the electrostatic adsorption cylinder 9 will fall into the ash discharge cylinder 46, and then the ash will be discharged from the ash discharge cylinder 45 through the air suction pump 44. The air suction pump 44 is turned off during ventilation and filtration, and is turned on during backwashing.

[0078] The specific operation steps of this device are as follows:

[0079] First, the exhaust gas is introduced into the cylinder 1 through the air inlet pipe 3. Part of the ashes sink under the action of gravity, and part of them float up. The floating exhaust gas will be filtered by the filter cloth 15 and then discharged from the exhaust pipe 6.

[0080] While filtering, the jet assembly 18 sprays air from the inside to the outside of the filter cloth 15, and the jet assembly 18 also moves up and down inside the filter cloth 15 to perform multi-point targeted backwashing, and then the ash absorption assembly absorbs the splashed ash. At the same time, the rotation of the rotating assembly drives the vibration assembly 19 to operate, impact and vibrate the filter cloth 15, so that the ash on the filter cloth 15 is easier to fall off;

[0081] After the ash on the filter cloth 15 is cleaned, the ash is blown into the ash discharge assembly 4 through the ash suction assembly, and then discharged from the cylinder 1 through the ash discharge assembly 4.

[0082] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A waste gas and wastewater treatment device for a domestic waste incineration power plant, comprising a cylinder, characterized in that: It also includes an air inlet pipe fixedly installed on the side of the cylinder and connected to the inside of the cylinder, and an air outlet pipe fixedly connected to the top of the cylinder; The filter part is installed inside the cylinder. The filter part includes filter cloth. The filter cloth is cylindrical. The exhaust gas flows from the outside of the filter cloth to the inside. The ash adheres to the outside of the filter cloth. The backwashing part is installed on the cylinder, the backwashing part is located inside the filter cloth, and the backwashing part includes an air jet component, a rotating component and a vibrating component; The jet assembly includes an electric push rod fixedly mounted on the top of the cylinder, a jet nozzle fixedly mounted on the telescopic end of the electric push rod, a gas cylinder fixedly mounted on the outside of the cylinder, a gas distribution control valve fixedly mounted on the gas cylinder, a first gas guide pipe fixedly connected to the gas distribution control valve, an annular gas delivery tank fixedly mounted on the top of the cylinder, the telescopic end of the electric push rod passes through the middle of the gas delivery tank, the first gas guide pipe is connected to the gas delivery tank, and the gas delivery tank and the jet nozzle are connected through a plurality of telescopic pipes; The rotating assembly includes a first fixing frame fixedly mounted on the bottom of the air nozzle, a second fixing frame fixedly mounted on the bottom of the first fixing frame, a plurality of first rotating shafts rotatably mounted between the first fixing frame and the second fixing frame, a guide plate fixedly mounted on each first rotating shaft, a splitter plate matched with the guide plate fixedly mounted inside the first fixing frame, a fixing ring fixedly mounted on the air nozzle, a motor fixedly mounted on the fixing ring, and an adjusting mechanism mounted between the motor driving end and the plurality of first rotating shafts; The adjustment mechanism comprises a rotating ring rotatably mounted on the first fixed frame, a plurality of second rotating shafts are rotatably mounted on the rotating ring, a connecting block is rotatably mounted on each second rotating shaft through a connecting rod, each connecting rod is rotatably connected to the corresponding second rotating shaft, each connecting block is fixedly connected to the corresponding first rotating shaft, a gear ring is fixedly mounted on the rotating ring, and a gear meshing with the gear ring is fixedly mounted on the motor driving end; The vibration assembly includes a third fixing frame rotatably mounted on the bottom of the second fixing frame, a plurality of guide plates are fixedly mounted on the third fixing frame, a rotating rod is rotatably mounted on the rotating ring, a screw is fixedly mounted on the rotating rod, and an incomplete toothed ring meshing with the gear is fixedly mounted on the rotating rod, a nut is threadedly rotatably mounted on the screw rod, a disc is fixedly mounted on the nut, a wind shield ring matched with the guide plate is fixedly mounted on the disc, and the wind shield ring is sleeved on the third fixing frame; A plurality of shafts are rotatably mounted at the bottom of the third fixed frame, a spring coil is fixedly mounted between each shaft and the third fixed frame, a rotating rod is fixedly mounted on each shaft, a sliding groove is provided on the rotating rod, a sliding rod is slidably mounted in the sliding groove, a plurality of tension springs are fixedly mounted between the sliding rod and the rotating rod, and an impact plate matched with the filter cloth is fixedly mounted on each sliding rod; The cleaning part is installed inside the cylinder, and the cleaning part includes an ash discharge component and an ash suction component.

2. The waste gas and wastewater treatment device for a domestic waste incineration power plant according to claim 1, characterized in that: An air intake pump is fixedly installed at one end of the air intake pipe away from the cylinder body. The air intake pipe is designed to be inclined and has a certain angle with the cylinder body, which is not less than fifteen degrees.

3. The waste gas and wastewater treatment device for a domestic waste incineration power plant according to claim 1, characterized in that: A wire mesh cover is fixedly installed on the inner side wall of the cylinder through a frame, the filter cloth is placed and fixed inside the wire mesh cover, and a supporting mesh cover is arranged inside the filter cloth to support the filter cloth.

4. The waste gas and wastewater treatment device for a domestic waste incineration power plant according to claim 1, characterized in that: The ash discharge assembly comprises an ash discharge cylinder fixedly installed at the bottom of the cylinder body, the bottom of the ash discharge cylinder is fixedly connected with an air suction pump, and the bottom of the air suction pump is fixedly connected with an ash outlet cylinder.

5. The waste gas and wastewater treatment device for a domestic waste incineration power plant according to claim 1, characterized in that: The dust collection assembly includes an electrostatic adsorption cylinder fixedly installed inside the cylinder body, an air guide ring fixedly installed on the top of the electrostatic adsorption cylinder, the air guide ring is connected to the air distribution control valve through a second air guide pipe, an annular hole is opened at the bottom of the air guide ring, a guide plate matching the inner wall of the electrostatic adsorption cylinder is fixedly installed in the annular hole, and the guide plate passes through the electrostatic adsorption cylinder and extends into the interior of the electrostatic adsorption cylinder.

6. A method for treating waste gas and wastewater in a domestic waste incineration power plant, used in a waste gas and wastewater treatment device for a domestic waste incineration power plant as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1. First, the exhaust gas is introduced into the cylinder through the air inlet pipe. Part of the ashes sink under the action of gravity, and part floats up. The floating exhaust gas will be filtered through the filter cloth and then discharged from the exhaust pipe; S2. While filtering, the jet assembly sprays air from the inside to the outside of the filter cloth. The jet assembly also moves up and down inside the filter cloth to perform multi-point targeted backwashing. Then, the ash-absorbing assembly absorbs the splashed ash. At the same time, the rotation of the rotating assembly drives the vibration assembly to operate, impact and vibrate the filter cloth, making it easier for the ash on the filter cloth to fall off. S3, after the ash on the filter cloth is cleaned, the ash is blown into the ash discharge assembly through the ash suction assembly, and then discharged from the cylinder through the ash discharge assembly.

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