A water-washed fly ash waste gas treatment device with multi-stage separation function

Abstract

The invention discloses a water-washed fly ash waste gas treatment device with a multi-stage separation function, which relates to the technical field of treatment devices. The treatment device comprises a fly ash conveying mechanism, a water washing mechanism, a filter press drying mechanism and a waste gas treatment mechanism. The fly ash conveying mechanism and the water washing mechanism are tightly connected, the fly ash conveying mechanism and the water washing mechanism are communicated, the water washing mechanism and the filter press drying mechanism are tightly connected, the water washing mechanism and the filter press drying mechanism are communicated, the waste gas treatment mechanism and the water washing mechanism are communicated, the waste gas treatment mechanism and the filter press drying mechanism are communicated, the waste gas treatment mechanism and the water washing mechanism are tightly connected, the fly ash conveying mechanism conveys the fly ash to the water washing mechanism for cleaning, the water washing mechanism is tightly connected and communicated with the filter press drying mechanism, the cleaned fly ash directly enters the filter press drying mechanism for dehydration and drying, and the waste gas treatment mechanism can collect and treat the waste gas generated during the cleaning and drying process.

Description

Technical Field

[0001] The invention relates to the technical field of treatment devices, in particular to a water-washed fly ash waste gas treatment device with a multi-stage separation function. Background Art

[0002] Over the past few decades, fly ash treatment technology has undergone significant development. Traditional fly ash treatment methods mainly focus on physical and chemical treatment technologies. With the advancement of technology, researchers have begun to explore more environmentally friendly and efficient comprehensive treatment solutions. In recent years, with the increasing requirements for environmental protection and sustainable development, the market demand for fly ash treatment technology has also increased, promoting the continuous innovation of related equipment and technologies. Looking to the future, it is expected that more new materials and new technologies will be applied to the field of fly ash treatment, especially the introduction of intelligent and automated technologies, which will greatly improve the treatment efficiency and economy.

[0003] At present, the fly ash treatment technologies mainly include the following: first, physical treatment technology, such as heat treatment and mechanical separation, which removes moisture and some harmful components in fly ash by physical methods; second, chemical treatment technology, which uses acid-base neutralization, oxidation-reduction and other reactions to convert heavy metals and organic pollutants in fly ash into safer forms; third, biological treatment technology, which uses the degradation ability of microorganisms to treat organic components in fly ash. Although these technologies have achieved results to a certain extent, they usually have limitations.

[0004] Although the existing technology has made progress in fly ash treatment, it still has significant shortcomings. First, traditional physical and chemical treatment methods are often unable to efficiently remove all heavy metals and harmful substances in fly ash, resulting in a certain degree of environmental risk after treatment. Secondly, most existing technologies use a single treatment process, lack of systematicness and comprehensiveness, low treatment efficiency, and cannot adapt to the treatment needs of different types of fly ash. In addition, the performance of traditional methods in resource recovery and secondary pollution is unsatisfactory, and it is difficult to achieve real environmental protection goals. Therefore, technical personnel in this field provide a water-washed fly ash waste gas treatment device with multi-stage separation function. Summary of the invention

[0005] The object of the present invention is to provide a water-washed fly ash waste gas treatment device with a multi-stage separation function to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The treatment device includes a fly ash conveying mechanism, a water washing mechanism, a filter press drying mechanism and a waste gas treatment mechanism. The fly ash conveying mechanism and the water washing mechanism are tightly connected, the fly ash conveying mechanism and the water washing mechanism are connected, the water washing mechanism and the filter press drying mechanism are tightly connected, the water washing mechanism and the filter press drying mechanism are connected, the waste gas treatment mechanism and the water washing mechanism are connected, the waste gas treatment mechanism and the filter press drying mechanism are connected, and the waste gas treatment mechanism and the water washing mechanism are tightly connected.

[0008] By adopting the above technical scheme, the treatment device is specifically composed of a fly ash conveying mechanism, a water washing mechanism, a filter press drying mechanism and a waste gas treatment mechanism. The fly ash conveying mechanism is tightly connected and communicated with the water washing mechanism to ensure that the fly ash can be smoothly transported to the water washing mechanism for cleaning treatment. The water washing mechanism is tightly connected and communicated with the filter press drying mechanism, and the cleaned fly ash directly enters the filter press drying mechanism for dehydration and drying treatment. The waste gas treatment mechanism is respectively connected with the water washing mechanism and the filter press drying mechanism, and is tightly connected with the water washing mechanism, so that the waste gas generated during the cleaning and drying process can be collected and treated in time. Through the coordinated work of these components, the device realizes efficient transportation, thorough cleaning, effective dehydration and drying of fly ash, and comprehensive treatment of waste gas, achieving the effect of multi-stage separation and environmental protection treatment.

[0009] Furthermore, the fly ash conveying mechanism includes a conveying box, a screw conveyor, a weighing platform, a negative pressure component, a weighing sensor, a conveying fan and a transmission component. The screw conveyor and the weighing platform are tightly connected, the weighing platform and the transmission component are transmission-connected, the transmission component and the exhaust gas treatment mechanism are transmission-connected, the transmission component and the water washing mechanism are transmission-connected, the negative pressure component and the conveying box are slidingly connected, the screw conveyor and the negative pressure component are tightly connected, the weighing sensor and the weighing platform are tightly connected, the conveying fan and the conveying box are tightly connected, the negative pressure component includes a negative pressure pump, a negative pressure pipeline, a filter valve, a one-way valve, a negative pressure box and a sliding block, the negative pressure pump and the sliding block are tightly connected, the negative pressure pump and the negative pressure pipeline are connected, the one-way valve and the negative pressure pipeline are connected, the filter valve and the negative pressure pipeline are connected, the filter valve and the negative pressure pipeline are connected, the filter valve and the negative pressure box are tightly connected, the filter valve and the negative pressure box are connected, the screw conveyor and the negative pressure box are tightly connected, and the screw conveyor is located in the negative pressure box.

[0010] By adopting the above technical scheme, the fly ash conveying mechanism specifically includes a conveying box, a screw conveyor, a weighing platform, a negative pressure component, a weighing sensor, a conveying fan and a transmission component. The screw conveyor is tightly connected to the weighing platform and is used to convey the fly ash out of the conveying box. A weighing sensor is installed on the weighing platform to monitor the weight of the fly ash in real time, and transmit the weight data to the exhaust gas treatment mechanism and the water washing mechanism through the transmission component to ensure the precise control of the subsequent treatment process. The transmission component plays a key role here. One end of it is connected to the weighing platform, and the other end is respectively connected to the exhaust gas treatment mechanism and the water washing mechanism. The specific transmission relationship is to achieve synchronous transmission through a gear set or chain transmission, so that each mechanism works together. The negative pressure component includes a negative pressure pump, a negative pressure pipeline, a filter valve, a one-way valve, a negative pressure box and a sliding block, wherein the negative pressure pump is tightly connected to the sliding block and is connected to the negative pressure box through a negative pressure pipeline. The screw conveyor is located in the negative pressure box and is tightly connected to it, and the negative pressure environment is used to prevent the fly ash from leaking during the transportation process. The filter valve and the one-way valve are installed on the negative pressure pipeline. The filter valve is used to filter the fly ash particles, and the one-way valve ensures the one-way flow of the airflow to avoid backflow. The sliding block is slidably connected to the conveying box, so that the negative pressure component can adjust its position as needed. The conveying fan is tightly connected to the conveying box to provide conveying power and promote the flow of fly ash. In the work process, the fly ash first enters the screw conveyor from the conveying box and is transported to the weighing platform under the action of the conveying fan. After the weighing sensor detects the weight of the fly ash, it transmits the signal to the exhaust gas treatment mechanism and the water washing mechanism through the transmission component to adjust their treatment parameters. Under the action of the negative pressure pump, the negative pressure component forms a negative pressure environment in the negative pressure box to prevent the leakage of fly ash. The filter valve and the one-way valve ensure the safety and environmental protection of the system. Through this design, the fly ash conveying mechanism realizes efficient and accurate fly ash transportation and provides a reliable prerequisite for subsequent treatment.

[0011] Furthermore, the transmission assembly includes a lower pressure rod, a first elastic part, a transmission box, a first transmission piston, a first transmission piston, a top connecting rod, a first sliding plate, a second elastic part, a first pressure sensor, an electromagnetic block, a magnetic block, a third elastic part and a second sliding plate. The lower pressure rod is slidingly connected to the transmission box, the lower pressure rod is tightly connected to the weighing platform, the lower pressure rod is tightly connected to the first transmission piston, the first transmission piston is slidingly connected to the transmission box, the second transmission piston is slidingly connected to the transmission box, the second transmission piston is transmission-connected to the top connecting rod, the top connecting rod is tightly connected to the first sliding plate, the first sliding plate and the second elastic part are tightly connected, the second elastic part is tightly connected to the first pressure sensor, the first pressure sensor and the water washing mechanism are tightly connected, the first pressure sensor and the electromagnetic block are electrically connected, the electromagnetic block and the magnetic block are magnetically repelled from each other, the third elastic part is tightly connected to the electromagnetic block, the magnetic block and the third elastic part are tightly connected, the magnetic block and the second sliding plate are transmission-connected, and the second sliding plate and the water washing mechanism are slidingly connected.

[0012] By adopting the above technical solution, the transmission assembly specifically includes a lower pressure rod, a first elastic member, a transmission box, a first transmission piston, a second transmission piston, a top connecting rod, a first sliding plate, a second elastic member, a first pressure sensor, an electromagnetic block, a magnetic block, a third elastic member and a second sliding plate. The lower pressure rod is slidably connected to the transmission box and is tightly connected to the weighing platform. When the weighing platform is subjected to the weight of fly ash, the lower pressure rod moves downward. The lower pressure rod is fixedly connected to the first transmission piston, which slides in the transmission box and transmits the movement of the lower pressure rod to the mechanism in the transmission box. The second transmission piston also slides in the transmission box and is transmission-connected to the top connecting rod through a specific transmission method such as a gear rack or a connecting rod mechanism, converting and transmitting the movement of the first transmission piston to the top connecting rod. The top connecting rod is tightly connected to the first sliding plate, and the first sliding plate is tightly connected to the second elastic member, which plays a role of buffering and returning. The second elastic member is tightly connected to the first pressure sensor. When the top connecting rod is subjected to transmission movement, the pressure sensor detects the pressure change. The first pressure sensor is tightly connected to the water washing mechanism and electrically connected to the electromagnetic block. When the pressure signal is detected, the electromagnetic block is activated. The electromagnetic block and the magnetic block repel each other with the same poles, and the repulsive force is transmitted through the third elastic member (fixedly connected between the electromagnetic block and the magnetic block) to push the magnetic block to move. The magnetic block is connected to the second sliding plate in a transmission manner, which can be achieved through a slide groove or a guide rod mechanism to transmit the movement of the magnetic block to the second sliding plate. The second sliding plate is slidably connected to the water washing mechanism, and finally adjusts the position of the components inside the water washing mechanism or starts the water flow to achieve water washing treatment of the fly ash. Through the above design, the transmission component converts the fly ash weight sensed by the weighing platform into mechanical and electrical signals, accurately controls the operation of the water washing mechanism, and improves the processing efficiency and effect.

[0013] Furthermore, the water washing mechanism includes a primary water washing component, a secondary water washing component, a flexible coupling component and a water washing box. The first pressure sensor and the water washing box are fastened together, the water washing box and the second sliding plate are slidably connected, the primary water washing component and the secondary water washing component are connected in communication, the primary water washing component and the flexible coupling component are transmission connected, and the flexible coupling assembly and the secondary water washing component are transmission connected.

[0014] By adopting the above technical scheme, the water washing mechanism specifically includes a primary water washing component, a secondary water washing component, a flexible coupling component and a water washing box. The first pressure sensor is tightly connected to the water washing box, and can monitor the pressure change in the water washing box in real time to ensure the safety and effectiveness of the water washing process. The water washing box is slidably connected to the second sliding plate, allowing the water washing box to be smoothly displaced and adjusted under the guidance of the second sliding plate to adapt to different water washing needs. The primary water washing component is connected to the secondary water washing component, and the fly ash first enters the primary water washing component for preliminary cleaning, and then enters the secondary water washing component through the connected channel for deep cleaning to ensure that the impurities in the fly ash are fully removed. The primary water washing component is transmission-connected to the secondary water washing component through a flexible coupling component. Specifically, the flexible coupling component includes a coupling and an elastic element, which can absorb vibration and displacement errors while transmitting power, ensuring the stability of power transmission. The flexible coupling component is also transmission-connected to the primary water washing component, and the power of the primary water washing component is transmitted to the flexible coupling component through a transmission device such as a gear or a chain, and then transmitted to the secondary water washing component by the flexible coupling component. This transmission relationship enables the first and second level water washing components to operate synchronously and coordinate the multi-level water washing process of fly ash. Through the above design, the water washing mechanism realizes efficient, multi-level water washing treatment of fly ash, improves the cleaning effect, and ensures the smooth progress of subsequent treatment procedures.

[0015] Furthermore, the filter pressing and drying mechanism includes a plate-frame filter press, a dryer and a belt conveyor, the dryer and the plate-frame filter press are tightly connected, the belt conveyor and the dryer are tightly connected, and the plate-frame filter press is connected to a water washing box.

[0016] By adopting the above technical scheme, the filter pressing and drying mechanism specifically includes a plate-frame filter press, a dryer and a belt conveyor. The plate-frame filter press is connected to the water washing box and can receive the cleaned fly ash slurry from the water washing box. The plate-frame filter press is tightly connected to the dryer, and the wet filter cake after the filter pressing directly enters the dryer without intermediate transfer, thereby reducing material loss and secondary pollution. The dryer is tightly connected to the belt conveyor, and the dried dry fly ash is conveyed to a designated location for collection or further treatment by the belt conveyor. In the specific implementation process, the cleaned fly ash slurry enters the plate-frame filter press from the water washing box. The plate-frame filter press uses the pressure between the filter plate and the filter frame to separate the solid fly ash from the water to form a filter cake with a low moisture content. The filter cake directly enters the dryer through the tight connection between the plate-frame filter press and the dryer. The dryer heats the filter cake to further reduce its moisture content and achieve a drying effect. Finally, the dried fly ash is conveyed out by the dryer through the tightly connected belt conveyor to realize continuous production. The working principle of this design is to efficiently dehydrate and dry the fly ash through a combination of mechanical filter pressing and thermal drying. The plate and frame filter press removes most of the moisture through pressure, while the dryer evaporates the remaining moisture using heat energy. The application of the belt conveyor enables the dried fly ash to be transported continuously and stably, avoiding the inefficiency and safety hazards of manual handling. Through the close cooperation of the above components, the filter pressing and drying mechanism achieves efficient dehydration and drying of fly ash, improves processing efficiency, reduces energy consumption and labor costs, and achieves the unity of environmental protection and economic benefits.

[0017] Furthermore, the waste gas treatment mechanism includes a pickling tower, an alkali washing tower, an activated carbon adsorption device, an induced draft fan and an exhaust duct. The pickling tower is connected to a plate and frame filter press, the pickling tower is connected to an alkali washing tower, the activated carbon adsorption device is connected to an alkali washing tower, the induced draft fan is connected to the activated carbon adsorption device, and the exhaust duct is connected to the induced draft fan.

[0018] By adopting the above technical scheme, the waste gas treatment mechanism specifically includes an acid washing tower, an alkali washing tower, an activated carbon adsorption device, an induced draft fan and an exhaust pipe. The acid washing tower is connected to the plate and frame filter press to receive the acid waste gas generated during the filtration process and perform preliminary neutralization treatment on it. The acid washing tower is connected to the alkali washing tower, and the acidic gas that is not completely neutralized continues to enter the alkali washing tower to react with the alkaline solution to further neutralize the residual acidic components. The alkali washing tower is connected to the activated carbon adsorption device, and the waste gas after neutralization treatment is transported to the activated carbon adsorption device, and the organic matter and odor in the gas are removed by the adsorption performance of the activated carbon. The induced draft fan is connected to the activated carbon adsorption device to provide power to inhale the waste gas from the front-end equipment and push it to the exhaust pipe. The exhaust pipe is connected to the induced draft fan, and finally the clean gas that has been treated in multiple stages is safely discharged into the atmosphere. In the work process, the waste gas is treated by the acid washing tower, the alkali washing tower and the activated carbon adsorption device in turn, and the harmful substances are gradually removed. The role of the induced draft fan ensures the smooth flow of gas between each treatment unit. Through this multi-stage waste gas treatment method, the waste gas generated in the production process can be efficiently purified to meet environmental emission standards and reduce pollution to the environment.

[0019] Furthermore, the first-level water washing component includes a stirring motor, a stirring rod, a stirring blade, a rotating motor, an extrusion spring and a second pressure sensor. The stirring motor and the stirring rod are transmission-connected, the stirring rod and the flexible coupling assembly are transmission-connected, the rotating motor and the stirring rod are fastened, the rotating motor and the stirring blade are transmission-connected, and the rotating motor and the second pressure sensor are electrically connected.

[0020] By adopting the above technical solution, the primary water washing component specifically includes a stirring motor, a stirring rod, a stirring blade, a rotating motor, an extrusion spring and a second pressure sensor. The stirring motor is connected to the stirring rod through a coupling, providing power to rotate the stirring rod to stir the fly ash and water in the water washing box. The stirring rod is connected to the flexible coupling assembly to transmit power to the secondary water washing component to ensure the coordinated operation of the two-stage water washing process. The rotating motor is tightly connected to the stirring rod to further enhance the rotational stability of the stirring rod. The rotating motor is connected to the stirring blade through a gear or chain to rotate the stirring blade in the water washing box, increase the turbulence of the water flow, and improve the contact efficiency between the fly ash and the water. The extrusion spring is installed at the end of the stirring rod or the stirring blade to play a role in buffering and pressure regulation. The second pressure sensor is electrically connected to the rotating motor. When the pressure in the water washing box is too high, the sensor detects the pressure change and feeds back to the rotating motor to automatically adjust the stirring speed or stop running to prevent the equipment from overloading. Through the above design, the first-stage water washing component achieves sufficient stirring and preliminary cleaning of the fly ash, improves the water washing efficiency, and provides a good foundation for subsequent treatment processes.

[0021] Furthermore, the secondary water washing component includes a vibrator, a displacement plate, an extrusion plate, an extrusion spring and an extrusion hydraulic cylinder. The vibrator and the displacement plate are fastened together, the extrusion hydraulic cylinder and the water washing box are fastened together, the extrusion hydraulic cylinder and the extrusion plate are transmission-connected, the displacement plate is provided with a transmission groove, the flexible coupling assembly and the transmission groove are transmission-connected, the extrusion plate and the displacement plate are slidingly connected, the extrusion plate and the extrusion spring are fastened together, and the extrusion spring and the displacement plate are fastened together.

[0022] By adopting the above technical solution, the secondary water washing assembly specifically includes a vibrator, a displacement plate, an extrusion plate, a displacement spring and an extrusion hydraulic cylinder. The vibrator is tightly connected to the displacement plate, and the displacement plate is vibrated by the action of the vibrator, thereby enhancing the stirring effect during the water washing process. The extrusion hydraulic cylinder is connected to the extrusion plate in a transmission manner, and the specific transmission relationship is: the piston rod of the extrusion hydraulic cylinder is fixedly connected to the extrusion plate, and when the hydraulic cylinder is extended and retracted, the extrusion plate is driven to slide on the displacement plate. A transmission groove is provided on the displacement plate, and the flexible coupling assembly is connected to the transmission groove in a transmission manner. The transmission mode is: the flexible coupling assembly is connected to the slider in the transmission groove through the coupling rod, and the power is transmitted from the primary water washing assembly to the secondary water washing assembly. The extrusion plate is slidably connected to the displacement plate, allowing the extrusion plate to move freely on the displacement plate. The extrusion plate is tightly connected to the displacement spring, and the other end of the displacement spring is tightly connected to the displacement plate to form an elastic reset structure. When the extrusion hydraulic cylinder pushes the extrusion plate to compress the fly ash, the displacement spring is compressed and stores elastic potential energy. When the hydraulic cylinder returns, the spring releases energy to assist the extrusion plate in resetting. Through the above design, the secondary water washing component vibrates and washes the fly ash under the action of the vibrator, and at the same time, the cooperation of the extrusion hydraulic cylinder and the displacement spring is utilized to realize the extrusion treatment of the fly ash, thereby further improving the cleaning effect and purification efficiency of the fly ash.

[0023] The flexible coupling assembly includes a coupling rod, a sliding rod, a first bevel gear, a rotating spring, a second bevel gear, a rotating block, a lifting hydraulic cylinder and a transmission cam. The coupling rod and the sliding rod are slidably connected, the first bevel gear and the coupling rod are rotatably connected, the stirring rod and the coupling rod are transmission-connected, the coupling rod and the first bevel gear are transmission-connected, the first bevel gear and the second bevel gear are transmission-connected, the second bevel gear and the rotating block are transmission-connected, the rotating block and the transmission cam are transmission-connected, the transmission cam and the first extrusion plate are transmission-connected, the transmission cam and the second extrusion plate are transmission-connected

[0024] Plate drive connection.

[0025] By adopting the above technical solution, the flexible coupling assembly specifically includes a coupling rod, a sliding rod, a first bevel gear, a rotating spring, a second bevel gear, a rotating block, a lifting hydraulic cylinder and a transmission cam. The coupling rod is slidably connected to the sliding rod, allowing the coupling rod to move axially inside the sliding rod to adapt to the small displacement and angular error during the operation of the equipment, and providing a flexible connection effect. The first bevel gear is rotatably connected to the coupling rod, and the coupling rod is tightly combined with the first bevel gear through a keyway or a spline to ensure that the rotation of the coupling rod can be transmitted to the first bevel gear. The stirring rod is transmission-connected to the coupling rod, and the specific transmission relationship is that the stirring rod is fixedly connected to the coupling rod through a coupling, and when the stirring motor drives the stirring rod to rotate, the coupling rod rotates synchronously. The rotation of the coupling rod drives the first bevel gear to rotate, and the first bevel gear and the second bevel gear are meshed for transmission, changing the direction of the rotational motion by 90 degrees. The second bevel gear is transmission-connected to the rotating block, and the rotating block is tightly connected to the second bevel gear through a bearing or a rotating shaft to ensure the smooth transmission of the rotational motion. The rotating block is connected to the transmission cam by transmission, specifically, the rotating block is fixed on the central axis of the transmission cam, and the transmission cam rotates synchronously with the rotation of the rotating block. The transmission cam is also connected to the first extrusion plate and the second extrusion plate by transmission. The rotational motion of the cam is converted into the reciprocating linear motion of the extrusion plate through the irregular curve on the cam surface. The lifting hydraulic cylinder is connected to the rotating block, which can control the up and down position of the rotating block and the transmission cam, and adjust the working stroke and strength of the extrusion plate. In the working process, the stirring motor drives the stirring rod to rotate, and the rotational motion is transmitted to the first bevel gear through the coupling rod, and then the power is transmitted to the rotating block through the meshing of the first bevel gear and the second bevel gear. The rotation of the rotating block drives the transmission cam to rotate. The special curve design of the cam enables the first extrusion plate and the second extrusion plate to perform extrusion actions alternately, and effectively extrude and loosen the material. The setting of the rotating spring provides torque compensation for the transmission system, absorbs vibration and impact during operation, and improves the stability of the transmission. Through the above design, the flexible coupling assembly realizes efficient power transmission from the stirring rod to the extrusion plate, makes full use of the mechanical transmission principle, converts the rotational motion into linear motion, and ensures the normal operation of the extrusion function of the secondary washing assembly. The reasonable configuration and tight connection of various parts improve the overall operating efficiency and stability of the equipment and achieve the purpose of enhancing the fly ash washing effect.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] Efficient fly ash transportation and monitoring: The fly ash transportation mechanism of the present invention realizes efficient transportation and weight monitoring of fly ash through the close connection of the conveying box, the screw conveyor and the weighing platform. The screw conveyor is located in the negative pressure box, and the negative pressure environment prevents the leakage of fly ash, ensuring the safety of the transportation process. The weighing sensor is tightly connected to the weighing platform to monitor the weight of the fly ash in real time, and transmits the signal to the water washing mechanism and the exhaust gas treatment mechanism through the transmission assembly to adjust the subsequent processing parameters. In this way, the transportation of fly ash is not only rapid and efficient, but also its weight can be accurately controlled during the transportation process, providing a reliable basis for subsequent processing.

[0028] Multi-stage water washing for efficient cleaning: The design of the water washing mechanism achieves multi-stage water washing treatment of fly ash through the close cooperation of the primary and secondary water washing components. The primary water washing component uses the strong stirring effect generated by the stirring motor and stirring blades to preliminarily remove impurities in the fly ash. The cleaned fly ash is transferred to the secondary water washing component through the flexible coupling component to further improve the cleaning efficiency. The secondary water washing component adopts a design combining a vibrator and an extrusion hydraulic cylinder to enhance the cleaning effect of the fly ash. Such a multi-stage water washing design ensures that impurities in the fly ash are fully removed, providing clean raw materials for subsequent dehydration and drying.

[0029] Efficient dehydration and drying: The filter press and drying mechanism forms an efficient dehydration and drying system through the combination of a plate and frame filter press and a dryer. The plate and frame filter press separates the cleaned wet fly ash from the water through pressure to form a filter cake with low moisture content, which is directly sent to the dryer for heat treatment. The dryer further reduces the moisture content of the fly ash in the process to ensure the dryness of the final product. This design not only reduces material loss and secondary pollution, but also improves the overall processing efficiency through the combination of efficient filter press and thermal drying.

[0030] Waste gas treatment: The waste gas treatment mechanism adopts a multi-stage treatment method, including an acid washing tower, an alkali washing tower and an activated carbon adsorption device, and realizes the step-by-step purification of the waste gas through precise connection relationships. The acid washing tower is connected to the filter press, and the acid waste gas is first neutralized. The incompletely neutralized waste gas enters the alkali washing tower for further treatment, and finally the organic matter and odor are removed by the activated carbon adsorption device. The induced draft fan ensures the smooth flow of waste gas between each treatment unit, and finally the treated clean gas is safely discharged. Through this multi-stage waste gas treatment method, the effect of efficient purification is achieved, ensuring compliance with environmental emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the fly ash conveying mechanism of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of the negative pressure assembly of the present invention;

[0034] Figure 4 It is a schematic diagram of the structure of the transmission assembly of the present invention;

[0035] Figure 5 It is a schematic diagram of the structure of the water washing mechanism of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the primary water washing component of the present invention;

[0037] Figure 7 It is a schematic diagram of the structure of the flexible coupling assembly of the present invention.

[0038] In the figure: 1. fly ash conveying mechanism; 11. conveying box; 12. screw conveyor; 13. weighing platform; 14. negative pressure assembly; 141. negative pressure pump; 142. negative pressure pipeline; 143. filter valve; 144. one-way valve; 145. negative pressure box; 146. sliding block; 15. weighing sensor; 16. conveying fan; 17. transmission assembly; 171. lower pressure rod; 172. first elastic member; 173. transmission box; 174. first transmission piston; 175. second transmission piston; 176. top connecting rod; 177. first sliding plate; 178. second elastic member; 179. first pressure sensor; 1710. electromagnetic block; 1711. magnetic block; 1712. third elastic member; 1713. second sliding plate; 2. water washing mechanism; 21. primary water washing assembly; 211. stirring motor; 212 , stirring rod; 213, stirring blade; 214, rotating motor; 215, extrusion spring; 216, second pressure sensor; 22, secondary water washing assembly; 221, vibrator; 222, displacement plate; 2221, transmission groove; 223, extrusion plate; 224, displacement spring; 225, extrusion hydraulic cylinder; 23, flexible coupling assembly; 231, coupling rod; 232, sliding rod; 233, first bevel gear; 234, rotating spring; 235, second bevel gear; 236, rotating block; 237, lifting hydraulic cylinder; 238, transmission cam; 24, water washing box; 3, filter pressing and drying mechanism; 31, plate and frame filter press; 32, drying machine; 33, belt conveyor; 4, waste gas treatment mechanism; 41, acid washing tower; 42, alkali washing tower; 43, activated carbon adsorption device; 44, induced draft fan; 45, exhaust duct. DETAILED DESCRIPTION

[0039] 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.

[0040] See also Figure 1 - Figure 7 As shown, the present invention provides a technical solution of a water-washed fly ash waste gas treatment device with a multi-stage separation function:

[0041] The treatment device includes a fly ash conveying mechanism 1, a water washing mechanism 2, a filter press drying mechanism 3 and a waste gas treatment mechanism 4. The fly ash conveying mechanism 1 and the water washing mechanism 2 are tightly connected, the fly ash conveying mechanism 1 and the water washing mechanism 2 are communicated, the water washing mechanism 2 and the filter press drying mechanism 3 are tightly connected, the water washing mechanism 2 and the filter press drying mechanism 3 are communicated, the waste gas treatment mechanism 4 and the water washing mechanism 2 are communicated, the waste gas treatment mechanism 4 and the filter press drying mechanism 3 are communicated, and the waste gas treatment mechanism 4 and the water washing mechanism 2 are tightly connected.

[0042] By adopting the above technical scheme, the treatment device is specifically composed of a fly ash conveying mechanism 1, a water washing mechanism 2, a filter press drying mechanism 3 and a waste gas treatment mechanism 4. The fly ash conveying mechanism 1 is tightly connected and communicated with the water washing mechanism 2 to ensure that the fly ash can be smoothly transported to the water washing mechanism 2 for cleaning. The water washing mechanism 2 is tightly connected and communicated with the filter press drying mechanism 3, and the cleaned fly ash directly enters the filter press drying mechanism 3 for dehydration and drying. The waste gas treatment mechanism 4 is respectively connected to the water washing mechanism 2 and the filter press drying mechanism 3, and is tightly connected to the water washing mechanism 2, so that the waste gas generated during the cleaning and drying process can be collected and treated in time. Through the coordinated work of these components, the device realizes efficient transportation, thorough cleaning, effective dehydration and drying of fly ash, and comprehensive treatment of waste gas, achieving the effect of multi-stage separation and environmental protection treatment.

[0043] Further, the fly ash conveying mechanism 1 includes a conveying box 11, a screw conveyor 12, a weighing platform 13, a negative pressure component 14, a weighing sensor 15, a conveying fan 16 and a transmission component 17, the screw conveyor 12 and the weighing platform 13 are fastened, the weighing platform 13 and the transmission component 17 are transmission-connected, the transmission component 17 and the exhaust gas treatment mechanism 4 are transmission-connected, the transmission component 17 and the washing mechanism 2 are transmission-connected, the negative pressure component 14 and the conveying box 11 are slidably connected, the screw conveyor 12 and the negative pressure component 14 are fastened, the weighing sensor 15 and the weighing platform 13 are fastened, the conveying fan 16 and The conveying box 11 is tightly connected, and the negative pressure assembly 14 includes a negative pressure pump 141, a negative pressure pipeline 142, a filter valve 143, a one-way valve 144, a negative pressure box 145 and a sliding block 146. The negative pressure pump 141 and the sliding block 146 are tightly connected, the negative pressure pump 141 and the negative pressure pipeline 142 are connected, the one-way valve 144 and the negative pressure pipeline 142 are connected, the filter valve 143 and the negative pressure pipeline 142 are connected, the filter valve 143 and the negative pressure box 145 are tightly connected, the filter valve 143 and the negative pressure box 145 are connected, the screw conveyor 12 and the negative pressure box 145 are tightly connected, and the screw conveyor 12 is located in the negative pressure box 145.

[0044] By adopting the above technical solution, the fly ash conveying mechanism 1 specifically includes a conveying box 11, a screw conveyor 12, a weighing platform 13, a negative pressure component 14, a weighing sensor 15, a conveying fan 16 and a transmission component 17. The screw conveyor 12 is tightly connected to the weighing platform 13, and is used to convey the fly ash out of the conveying box 11. A weighing sensor 15 is installed on the weighing platform 13 to monitor the weight of the fly ash in real time, and transmit the weight data to the exhaust gas treatment mechanism 4 and the water washing mechanism 2 through the transmission component 17 to ensure accurate control of the subsequent treatment process. The transmission component 17 plays a key role here. One end of the transmission component 17 is connected to the weighing platform 13, and the other end is respectively connected to the exhaust gas treatment mechanism 4 and the water washing mechanism 2. The specific transmission relationship is to achieve synchronous transmission through a gear set or chain transmission, so that each mechanism works in coordination. The negative pressure assembly 14 includes a negative pressure pump 141, a negative pressure pipeline 142, a filter valve 143, a one-way valve 144, a negative pressure box 145 and a sliding block 146, wherein the negative pressure pump 141 is tightly connected to the sliding block 146 and communicated with the negative pressure box 145 through the negative pressure pipeline 142. The screw conveyor 12 is located in the negative pressure box 145 and is tightly connected thereto, using the negative pressure environment to prevent the leakage of fly ash during transportation. The filter valve 143 and the one-way valve 144 are installed on the negative pressure pipeline 142, the filter valve 143 is used to filter the fly ash particles, and the one-way valve 144 ensures that the airflow flows in one direction to avoid backflow. The sliding block 146 is slidably connected to the conveying box 11, so that the negative pressure assembly 14 can adjust its position as needed. The conveying fan 16 is tightly connected to the conveying box 11 to provide conveying power and promote the flow of fly ash. In the working process, the fly ash first enters the screw conveyor 12 from the conveying box 11, and is transported to the weighing platform 13 under the action of the conveying fan 16. After the weighing sensor 15 detects the weight of the fly ash, it transmits the signal to the exhaust gas treatment mechanism 4 and the water washing mechanism 2 through the transmission component 17 to adjust their treatment parameters. Under the action of the negative pressure pump 141, the negative pressure component 14 forms a negative pressure environment in the negative pressure box 145 to prevent the fly ash from leaking out. The filter valve 143 and the one-way valve 144 ensure the safety and environmental protection of the system. Through this design, the fly ash conveying mechanism 1 realizes efficient and accurate fly ash transportation, and provides a reliable prerequisite for subsequent treatment.

[0045] Furthermore, the transmission assembly 17 includes a push rod 171, a first elastic member 172, a transmission box 173, a first transmission piston 174, a first transmission piston 174, a top rod 176, a first sliding plate 177, a second elastic member 178, a first pressure sensor 179, an electromagnetic block 1710, a magnetic block 1711, a third elastic member 1712 and a second sliding plate 1713, the push rod 171 and the transmission box 173 are slidably connected, the push rod 171 and the weighing platform 13 are fastened, the push rod 171 and the first transmission piston 174 are fastened, the first transmission piston 174 and the transmission box 173 are slidably connected, the second transmission piston 175 and the transmission box 173 are slidably connected, and the second transmission piston 175 is connected in transmission with the top connecting rod 176, the top connecting rod 176 is fastened to the first sliding plate 177, the first sliding plate 177 is fastened to the second elastic member 178, the second elastic member 178 is fastened to the first pressure sensor 179, the first pressure sensor 179 is fastened to the water washing mechanism 2, the first pressure sensor 179 is electrically connected to the electromagnetic block 1710, the electromagnetic block 1710 and the magnetic block 1711 are driven by magnetic pole repulsion, the third elastic member 1712 is fastened to the electromagnetic block 1710, the magnetic block 1711 and the third elastic member 1712 are fastened to the third sliding plate 1713, the second sliding plate 1713 is connected in sliding manner to the water washing mechanism 2.

[0046] By adopting the above technical solution, the transmission assembly 17 specifically includes a push rod 171, a first elastic member 172, a transmission box 173, a first transmission piston 174, a second transmission piston 175, a top rod 176, a first sliding plate 177, a second elastic member 178, a first pressure sensor 179, an electromagnetic block 1710, a magnetic block 1711, a third elastic member 1712 and a second sliding plate 1713. The push rod 171 is slidably connected to the transmission box 173 and is tightly connected to the weighing platform 13. When the weighing platform 13 is acted upon by the weight of the fly ash, the push rod 171 moves downward. The push rod 171 is fixedly connected to the first transmission piston 174, and the first transmission piston 174 slides in the transmission box 173 to transmit the movement of the push rod 171 to the mechanism in the transmission box 173. The second transmission piston 175 also slides in the transmission box 173, and is connected to the top connecting rod 176 through a specific transmission method such as a gear rack or a connecting rod mechanism, so as to convert and transmit the movement of the first transmission piston 174 to the top connecting rod 176. The top connecting rod 176 is tightly connected to the first sliding plate 177, and the first sliding plate 177 is tightly connected to the second elastic member 178, which plays a role of buffering and returning. The second elastic member 178 is tightly connected to the first pressure sensor 179. When the top connecting rod 176 is subjected to transmission movement, the pressure sensor detects the pressure change. The first pressure sensor 179 is tightly connected to the washing mechanism 2 and is electrically connected to the electromagnetic block 1710. When the pressure signal is detected, the electromagnetic block 1710 is activated. The electromagnetic block 1710 and the magnetic block 1711 have the same polarity repulsion, and the repulsive force is transmitted through the third elastic member 1712 (fixedly connected between the electromagnetic block 1710 and the magnetic block 1711), so as to push the magnetic block 1711 to move. The magnetic block 1711 is connected to the second sliding plate 1713 by transmission, which can be realized by a slide slot or a guide rod mechanism, so that the movement of the magnetic block 1711 is transmitted to the second sliding plate 1713. The second sliding plate 1713 is connected to the water washing mechanism 2 by sliding, and finally adjusts the position of the components inside the water washing mechanism 2 or starts the water flow to realize the water washing treatment of the fly ash. Through the above design, the transmission component 17 converts the fly ash weight felt by the weighing platform 13 into mechanical and electrical signals, accurately controls the operation of the water washing mechanism 2, and improves the treatment efficiency and effect.

[0047] Furthermore, the water washing mechanism 2 includes a primary water washing component 21, a secondary water washing component 22, a flexible coupling component 23 and a water washing box 24, the first pressure sensor 179 and the water washing box 24 are fastened together, the water washing box 24 and the second sliding plate 1713 are slidably connected, the primary water washing component 21 and the secondary water washing component 22 are connected in communication, the primary water washing component 21 and the flexible coupling component 23 are transmission-connected, and the flexible coupling component 23 and the secondary water washing component 22 are transmission-connected.

[0048] By adopting the above technical solution, the water washing mechanism 2 specifically includes a primary water washing component 21, a secondary water washing component 22, a flexible coupling component 23 and a water washing box 24. The first pressure sensor 179 is tightly connected to the water washing box 24, and can monitor the pressure change in the water washing box 24 in real time to ensure the safety and effectiveness of the water washing process. The water washing box 24 is slidably connected to the second sliding plate 1713, allowing the water washing box 24 to be smoothly displaced and adjusted under the guidance of the second sliding plate 1713 to adapt to different water washing needs. The primary water washing component 21 is connected to the secondary water washing component 22, and the fly ash first enters the primary water washing component 21 for preliminary cleaning, and then enters the secondary water washing component 22 through the connected channel for deep cleaning to ensure that the impurities in the fly ash are fully removed. The primary water washing component 21 is transmission-connected to the secondary water washing component 22 through the flexible coupling component 23. Specifically, the flexible coupling component 23 includes a coupling and an elastic element, which can absorb vibration and displacement errors while transmitting power to ensure the stability of power transmission. The flexible coupling assembly 23 is also connected to the primary water washing assembly 21 through transmission devices such as gears or chains to transmit the power of the primary water washing assembly 21 to the flexible coupling assembly 23, and then to the secondary water washing assembly 22 by the flexible coupling assembly 23. This transmission relationship enables the primary and secondary water washing assemblies 22 to operate synchronously and coordinate to complete the multi-stage water washing process of fly ash. Through the above design, the water washing mechanism 2 realizes efficient, multi-stage water washing treatment of fly ash, improves the cleaning effect, and ensures the smooth progress of subsequent treatment procedures.

[0049] Furthermore, the filter pressing and drying mechanism 3 includes a plate-frame filter press 31 , a dryer 32 and a belt conveyor 33 , the dryer 32 and the plate-frame filter press 31 are tightly connected, the belt conveyor 33 and the dryer 32 are tightly connected, and the plate-frame filter press 31 is connected to the washing box 24 .

[0050] By adopting the above technical solution, the filter pressing and drying mechanism 3 specifically includes a plate-frame filter press 31, a dryer 32 and a belt conveyor 33. The plate-frame filter press 31 is connected to the water washing box 24 and can receive the cleaned fly ash slurry from the water washing box 24. The plate-frame filter press 31 is tightly connected to the dryer 32, and the wet filter cake after the filter pressing directly enters the dryer 32 without intermediate transfer, thereby reducing material loss and secondary pollution. The dryer 32 is tightly connected to the belt conveyor 33, and the dried dry fly ash is conveyed to a designated location by the belt conveyor 33 for collection or further treatment. In the specific implementation process, the cleaned fly ash slurry enters the plate-frame filter press 31 from the water washing box 24. The plate-frame filter press 31 uses the pressure between the filter plate and the filter frame to separate the solid fly ash from the water to form a filter cake with a low water content. The filter cake directly enters the dryer 32 through the tight connection between the plate-frame filter press 31 and the dryer 32. The dryer 32 heats the filter cake to further reduce its moisture content and achieve a drying effect. Finally, the dried fly ash is transported out by the dryer 32 through a belt conveyor 33 that is tightly connected to the dryer 32 to achieve continuous production. The working principle of this design is to efficiently dehydrate and dry the fly ash through a combination of mechanical filter pressing and thermal drying. The plate and frame filter press 31 removes most of the moisture through pressure, while the dryer 32 uses thermal energy to evaporate the remaining moisture. The application of the belt conveyor 33 enables the dried fly ash to be transported continuously and stably, avoiding the inefficiency and safety hazards of manual handling. Through the close cooperation of the above-mentioned components, the filter pressing and drying mechanism 3 achieves efficient dehydration and drying of the fly ash, improves processing efficiency, reduces energy consumption and labor costs, and achieves the unity of environmental protection and economic benefits.

[0051] Furthermore, the waste gas treatment mechanism 4 includes a pickling tower 41, an alkali washing tower 42, an activated carbon adsorption device 43, an induced draft fan 44 and an exhaust duct 45. The pickling tower 41 is connected to the plate and frame filter press 31, the pickling tower 41 is connected to the alkali washing tower 42, the activated carbon adsorption device 43 is connected to the alkali washing tower 42, the induced draft fan 44 is connected to the activated carbon adsorption device 43, and the exhaust duct 45 is connected to the induced draft fan 44.

[0052] By adopting the above technical solution, the waste gas treatment mechanism 4 specifically includes an acid washing tower 41, an alkali washing tower 42, an activated carbon adsorption device 43, an induced draft fan 44 and an exhaust pipe 45. The acid washing tower 41 is connected to the plate and frame filter press 31, receives the acid waste gas generated during the filter pressing process, and performs preliminary neutralization treatment on it. The acid washing tower 41 is connected to the alkali washing tower 42, and the acid gas that is not completely neutralized continues to enter the alkali washing tower 42, reacts with the alkaline solution, and further neutralizes the residual acidic components. The alkali washing tower 42 is connected to the activated carbon adsorption device 43, and the waste gas after neutralization treatment is transported to the activated carbon adsorption device 43, and the organic matter and odor in the gas are removed by the adsorption performance of the activated carbon. The induced draft fan 44 is connected to the activated carbon adsorption device 43, providing power to suck the waste gas from the front-end equipment and push it to the exhaust pipe 45. The exhaust pipe 45 is connected to the induced draft fan 44, and finally the clean gas after multi-stage treatment is safely discharged into the atmosphere. In the working process, the waste gas is processed by the acid washing tower 41, the alkali washing tower 42 and the activated carbon adsorption device 43 in sequence to gradually remove harmful substances. The induced draft fan 44 ensures the smooth flow of gas between the processing units. Through this multi-stage waste gas treatment method, the waste gas generated in the production process can be efficiently purified to meet environmental emission standards and reduce pollution to the environment.

[0053] Furthermore, the first-level water washing component 21 includes a stirring motor 211, a stirring rod 212, a stirring blade 213, a rotating motor 214, an extrusion spring 215 and a second pressure sensor 216. The stirring motor 211 and the stirring rod 212 are transmission-connected, the stirring rod 212 and the flexible coupling component 23 are transmission-connected, the rotating motor 214 and the stirring rod 212 are fastened, the rotating motor 214 and the stirring blade 213 are transmission-connected, and the rotating motor 214 and the second pressure sensor 216 are electrically connected.

[0054] By adopting the above technical solution, the primary water washing assembly 21 specifically includes a stirring motor 211, a stirring rod 212, a stirring blade 213, a rotating motor 214, an extrusion spring 215 and a second pressure sensor 216. The stirring motor 211 is connected to the stirring rod 212 through a coupling, providing power to rotate the stirring rod 212 to stir the fly ash and water in the water washing box 24. The stirring rod 212 is connected to the flexible coupling assembly 23 to transmit power to the secondary water washing assembly 22 to ensure the coordinated operation of the two-stage water washing process. The rotating motor 214 is tightly connected to the stirring rod 212 to further enhance the rotational stability of the stirring rod 212. The rotating motor 214 is connected to the stirring blade 213 through a gear or chain to rotate the stirring blade 213 in the water washing box 24, increase the turbulence of the water flow, and improve the contact efficiency between the fly ash and the water. The extrusion spring 215 is installed at the end of the stirring rod 212 or the stirring blade 213 to play a role in buffering and pressure regulation. The second pressure sensor 216 is electrically connected to the rotating motor 214. When the pressure in the water washing box 24 is too high, the sensor detects the pressure change and feeds back to the rotating motor 214 to automatically adjust the stirring speed or stop the operation to prevent the equipment from overloading. Through the above design, the primary water washing component 21 achieves sufficient stirring and preliminary cleaning of the fly ash, improves the water washing efficiency, and provides a good foundation for the subsequent treatment process.

[0055] Furthermore, the secondary water washing component 22 includes a vibrator 221, a displacement plate 222, an extrusion plate 223, an extrusion spring 215 and an extrusion hydraulic cylinder 225. The vibrator 221 and the displacement plate 222 are fastened together, the extrusion hydraulic cylinder 225 and the water washing box 24 are fastened together, the extrusion hydraulic cylinder 225 and the extrusion plate 223 are transmission-connected, the displacement plate 222 is provided with a transmission groove 2221, the flexible coupling assembly 23 and the transmission groove 2221 are transmission-connected, the extrusion plate 223 and the displacement plate 222 are slidingly connected, the extrusion plate 223 and the extrusion spring 215 are fastened together, and the extrusion spring 215 and the displacement plate 222 are fastened together.

[0056] By adopting the above technical solution, the secondary water washing component 22 specifically includes a vibrator 221, a displacement plate 222, an extrusion plate 223, a displacement spring 224 and an extrusion hydraulic cylinder 225. The vibrator 221 is tightly connected to the displacement plate 222, and the displacement plate 222 is vibrated by the action of the vibrator 221, thereby enhancing the stirring effect during the water washing process. The extrusion hydraulic cylinder 225 is transmission-connected to the extrusion plate 223, and the specific transmission relationship is: the piston rod of the extrusion hydraulic cylinder 225 is fixedly connected to the extrusion plate 223, and when the hydraulic cylinder is extended and retracted, the extrusion plate 223 is driven to slide on the displacement plate 222. A transmission groove 2221 is provided on the displacement plate 222, and the flexible coupling assembly 23 is transmission-connected to the transmission groove 2221, and the transmission mode is: the flexible coupling assembly 23 is connected to the slider in the transmission groove 2221 through the coupling rod 231, and the power is transmitted from the primary water washing component 21 to the secondary water washing component 22. The extrusion plate 223 is slidably connected to the displacement plate 222, allowing the extrusion plate 223 to move freely on the displacement plate 222. The extrusion plate 223 is tightly connected to the displacement spring 224, and the other end of the displacement spring 224 is tightly connected to the displacement plate 222 to form an elastic reset structure. When the extrusion hydraulic cylinder 225 pushes the extrusion plate 223 to compress the fly ash, the displacement spring 224 is compressed to store elastic potential energy. When the hydraulic cylinder returns, the spring releases energy to assist the extrusion plate 223 in resetting. Through the above design, the secondary water washing component 22 vibrates and washes the fly ash under the action of the vibrator 221, and at the same time, the extrusion hydraulic cylinder 225 and the displacement spring 224 are used to cooperate to achieve the extrusion treatment of the fly ash, further improving the cleaning effect and purification efficiency of the fly ash.

[0057] The flexible coupling assembly 23 includes a coupling rod 231, a sliding rod 232, a first bevel tooth 233, a rotating spring 234, a second bevel tooth 235, a rotating block 236, a lifting hydraulic cylinder 237 and a transmission cam 238. The coupling rod 231 is slidably connected to the sliding rod 232, the first bevel tooth 233 is rotatably connected to the coupling rod 231, the stirring rod 212 is transmission-connected to the coupling rod 231, the coupling rod 231 is transmission-connected to the first bevel tooth 233, the first bevel tooth 233 and the second bevel tooth 235 are transmission-connected, the second bevel tooth 235 is transmission-connected to the rotating block 236, the rotating block 236 is transmission-connected to the transmission cam 238, and the transmission cam 238 is transmission-connected to the first extrusion plate.

[0058] Transmission connection: the transmission cam 238 is transmission connected to the second extrusion plate.

[0059] By adopting the above technical solution, the flexible coupling assembly 23 specifically includes a coupling rod 231, a sliding rod 232, a first bevel gear 233 wheel, a rotating spring 234, a second bevel gear 235 wheel, a rotating block 236, a lifting hydraulic cylinder 237 and a transmission cam 238. The coupling rod 231 is slidably connected to the sliding rod 232, allowing the coupling rod 231 to move axially in the sliding rod 232 to adapt to the slight displacement and angular error during the operation of the equipment, and provide a flexible connection effect. The first bevel gear 233 wheel is rotatably connected to the coupling rod 231, and the coupling rod 231 is tightly combined with the first bevel gear 233 wheel through a keyway or a spline to ensure that the rotation of the coupling rod 231 can be transmitted to the first bevel gear 233 wheel. The stirring rod 212 is transmission-connected to the coupling rod 231, and the specific transmission relationship is that the stirring rod 212 is fixedly connected to the coupling rod 231 through a coupling, and when the stirring motor 211 drives the stirring rod 212 to rotate, the coupling rod 231 rotates synchronously. The rotation of the coupling rod 231 drives the first bevel gear 233 wheel to rotate, and the first bevel gear 233 wheel meshes with the second bevel gear 235 wheel for transmission, changing the direction of the rotational motion by 90 degrees. The second bevel gear 235 wheel is connected to the rotating block 236 for transmission, and the rotating block 236 is tightly connected to the second bevel gear 235 wheel through a bearing or a rotating shaft to ensure the smooth transmission of the rotational motion. The rotating block 236 is connected to the transmission cam 238 for transmission, and specifically, the rotating block 236 is fixed on the central axis of the transmission cam 238. With the rotation of the rotating block 236, the transmission cam 238 also rotates synchronously. The transmission cam 238 is connected to the first extrusion plate and the second extrusion plate for transmission at the same time, and the rotational motion of the cam is converted into the reciprocating linear motion of the extrusion plate 223 through the irregular curve on the cam surface. The lifting hydraulic cylinder 237 is connected to the rotating block 236, and can control the up and down positions of the rotating block 236 and the transmission cam 238, and adjust the working stroke and strength of the extrusion plate 223. In the working process, the stirring motor 211 drives the stirring rod 212 to rotate, and the rotational motion is transmitted to the first bevel gear 233 wheel through the coupling rod 231, and then the power is transmitted to the rotating block 236 through the meshing of the first bevel gear 233 wheel and the second bevel gear 235 wheel. The rotation of the rotating block 236 drives the transmission cam 238 to rotate. The special curve design of the cam enables the first extrusion plate and the second extrusion plate to perform extrusion actions alternately, effectively extruding and loosening the material. The setting of the rotating spring 234 provides torque compensation for the transmission system, absorbs vibrations and shocks during operation, and improves the stability of the transmission. Through the above design, the flexible coupling assembly 23 realizes efficient power transmission from the stirring rod 212 to the extrusion plate 223, makes full use of the mechanical transmission principle, converts the rotational motion into linear motion, and ensures the normal operation of the extrusion function of the secondary water washing assembly 22. The reasonable configuration and tight connection of each part improve the overall operating efficiency and stability of the equipment, and achieves the purpose of enhancing the fly ash washing effect.

[0060] Working principle of the present invention: The fly ash conveying mechanism 1 realizes efficient conveying and weight monitoring of fly ash through the close connection of the conveying box 11, the screw conveyor 12 and the weighing platform 13. The screw conveyor 12 is located in the negative pressure box 145, and the negative pressure environment prevents the leakage of fly ash, ensuring the safety of the conveying process. The weighing sensor 15 is tightly connected to the weighing platform 13, monitors the weight of the fly ash in real time, and transmits the signal to the water washing mechanism 2 and the exhaust gas treatment mechanism 4 through the transmission component 17 to adjust the subsequent treatment parameters. In this way, the transportation of fly ash is not only fast and efficient, but also its weight can be accurately controlled during the transportation process, providing a reliable basis for subsequent treatment. The design of the water washing mechanism 2 realizes multi-stage water washing treatment of fly ash through the close cooperation of the primary and secondary water washing components 22. The primary water washing component 21 uses the strong stirring effect generated by the stirring motor 211 and the stirring blade 213 to preliminarily remove impurities in the fly ash. The cleaned fly ash is transmitted to the secondary water washing component 22 through the flexible coupling component 23, further improving the cleaning efficiency. The secondary water washing component 22 adopts a design combining a vibrator 221 and an extrusion hydraulic cylinder 225 to enhance the cleaning effect of the fly ash. Such a multi-stage water washing design ensures that the impurities in the fly ash are fully removed, providing clean raw materials for subsequent dehydration and drying. The filter pressing and drying mechanism 3 forms an efficient dehydration and drying system through the combination of a plate and frame filter press 31 and a dryer 32. The plate and frame filter press 31 separates the washed wet fly ash from the water by pressure to form a filter cake with a low moisture content, and directly sends it to the dryer 32 for heat treatment. The dryer 32 further reduces the moisture content of the fly ash in this process to ensure the dryness of the final product. Such a design not only reduces material loss and secondary pollution, but also improves the overall processing efficiency through the combination of efficient filter pressing and thermal drying. The waste gas treatment mechanism 4 adopts a multi-stage treatment method, including an acid washing tower 41, an alkali washing tower 42 and an activated carbon adsorption device 43, and realizes the step-by-step purification of the waste gas through a precise connection relationship. The acid washing tower 41 is connected to the filter press, and the acid waste gas is first neutralized. The waste gas that is not completely neutralized enters the alkali washing tower 42 for further treatment, and finally the organic matter and odor are removed by the activated carbon adsorption device 43. The induced draft fan 44 ensures the smooth flow of waste gas between various treatment units, and finally the treated clean gas is safely discharged. Through this multi-stage waste gas treatment method, the effect of efficient purification is achieved, ensuring compliance with environmental protection emission standards.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A water-washed fly ash waste gas treatment device with multi-stage separation function, characterized in that: The treatment device comprises a fly ash conveying mechanism (1), a water washing mechanism (2), a filter press drying mechanism (3) and a waste gas treatment mechanism (4); the fly ash conveying mechanism (1) and the water washing mechanism (2) are tightly connected, the fly ash conveying mechanism (1) and the water washing mechanism (2) are in communication, the water washing mechanism (2) and the filter press drying mechanism (3) are tightly connected, the water washing mechanism (2) and the filter press drying mechanism (3) are in communication, the waste gas treatment mechanism (4) and the water washing mechanism (2) are in communication, the waste gas treatment mechanism (4) and the filter press drying mechanism (3) are in communication, and the waste gas treatment mechanism (4) and the water washing mechanism (2) are tightly connected; The fly ash conveying mechanism (1) comprises a conveying box (11), a screw conveyor (12), a weighing platform (13), a negative pressure component (14), a weighing sensor (15), a conveying fan (16) and a transmission component (17); the screw conveyor (12) and the weighing platform (13) are tightly connected; the weighing platform (13) and the transmission component (17) are transmission-connected; the transmission component (17) and the exhaust gas treatment mechanism (4) are transmission-connected; the transmission component (17) and the water washing mechanism (2) are transmission-connected; the negative pressure component (14) and the conveying box (11) are slidably connected; the screw conveyor (12) and the negative pressure component (14) are tightly connected; the weighing sensor (15) and the weighing platform (13) are tightly connected; and the conveying fan (16) and the conveying box (11) are tightly connected; The transmission assembly (17) comprises a push rod (171), a first elastic member (172), a transmission box (173), a first transmission piston (174), a second transmission piston (175), a top connecting rod (176), a first sliding plate (177), a second elastic member (178), a first pressure sensor (179), an electromagnetic block (1710), a magnetic block (1711), a third elastic member (1712) and a second sliding plate (1713); the push rod (171) and the transmission box (173) are slidably connected; the push rod (171) and the weighing platform (13) are fixedly connected; the push rod (171) and the first transmission piston (174) are fixedly connected; the first transmission piston (174) and the transmission box (173) are slidably connected; the second transmission piston (175) and the transmission box (173) are slidably connected; the second transmission piston (176) and the transmission box (173) are fixedly connected; the second transmission piston (17 ... 5) is transmission-connected to a top connecting rod (176); the top connecting rod (176) is tightly connected to a first sliding plate (177); the first sliding plate (177) is tightly connected to a second elastic member (178); the second elastic member (178) is tightly connected to a first pressure sensor (179); the first pressure sensor (179) is tightly connected to a water washing mechanism (2); the first pressure sensor (179) is electrically connected to an electromagnetic block (1710); the electromagnetic block (1710) and a magnetic block (1711) are transmission-connected by magnetic pole repulsion; the third elastic member (1712) is tightly connected to the electromagnetic block (1710); the magnetic block (1711) and the third elastic member (1712) are tightly connected; the magnetic block (1711) and the second sliding plate (1713) are transmission-connected; and the second sliding plate (1713) and the water washing mechanism (2) are slidingly connected.

2. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 1, characterized in that: The negative pressure component (14) comprises a negative pressure pump (141), a negative pressure pipeline (142), a filter valve (143), a one-way valve (144), a negative pressure box (145) and a sliding block (146); the negative pressure pump (141) and the sliding block (146) are tightly connected; the negative pressure pump (141) and the negative pressure pipeline (142) are in communication; the one-way valve (144) and the negative pressure pipeline (142) are in communication; the filter valve (143) and the negative pressure box (145) are tightly connected; the filter valve (143) and the negative pressure box (145) are in communication; the screw conveyor (12) and the negative pressure box (145) are tightly connected; and the screw conveyor (12) is located in the negative pressure box (145).

3. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 2 is characterized in that: The water washing mechanism (2) comprises a primary water washing component (21), a secondary water washing component (22), a flexible coupling component (23) and a water washing box (24); the first pressure sensor (179) and the water washing box (24) are tightly connected; the water washing box (24) and the second sliding plate (1713) are slidably connected; the primary water washing component (21) and the secondary water washing component (22) are connected; the primary water washing component (21) and the flexible coupling component (23) are transmission-connected; and the flexible coupling component (23) and the secondary water washing component (22) are transmission-connected.

4. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 3 is characterized in that: The filter press and drying mechanism (3) comprises a plate-frame filter press (31), a dryer (32) and a belt conveyor (33); the dryer (32) and the plate-frame filter press (31) are tightly connected; the belt conveyor (33) and the dryer (32) are tightly connected; and the plate-frame filter press (31) and the water washing box (24) are in communication.

5. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 4, characterized in that: The waste gas treatment mechanism (4) comprises an acid washing tower (41), an alkali washing tower (42), an activated carbon adsorption device (43), an induced draft fan (44) and an exhaust pipe (45); the acid washing tower (41) is connected to a plate and frame filter press (31); the acid washing tower (41) is connected to an alkali washing tower (42); the activated carbon adsorption device (43) is connected to an alkali washing tower (42); the induced draft fan (44) is connected to the activated carbon adsorption device (43); and the exhaust pipe (45) is connected to the induced draft fan (44).

6. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 5, characterized in that: The primary water washing component (21) comprises a stirring motor (211), a stirring rod (212), a stirring blade (213), a rotating motor (214), a pressing spring (215) and a second pressure sensor (216); the stirring motor (211) and the stirring rod (212) are transmission-connected; the stirring rod (212) and the flexible coupling component (23) are transmission-connected; the rotating motor (214) and the stirring rod (212) are fixedly connected; the rotating motor (214) and the stirring blade (213) are transmission-connected; and the rotating motor (214) and the second pressure sensor (216) are electrically connected.

7. The device for treating waste gas from washed fly ash with multi-stage separation function according to claim 6, characterized in that: The secondary water washing assembly (22) comprises a vibrator (221), a displacement plate (222), an extrusion plate (223), a displacement spring (224) and an extrusion hydraulic cylinder (225); the vibrator (221) and the displacement plate (222) are tightly connected; the extrusion hydraulic cylinder (225) and the water washing box (24) are tightly connected; the extrusion hydraulic cylinder (225) and the extrusion plate (223) are transmission-connected; a transmission groove (2221) is provided on the displacement plate (222); the flexible coupling assembly (23) and the transmission groove (2221) are transmission-connected; the extrusion plate (223) and the displacement plate (222) are slidably connected; the extrusion plate (223) and the displacement spring (224) are tightly connected; and the displacement spring (224) and the displacement plate (222) are tightly connected.

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