131results about "Non-rotary device cleaning" patented technology

The present application relates to the field of asphalt mixing, especially to a drum-type asphalt mixing equipment flue gas waste heat recovery system. The drum-type asphalt mixing equipment flue gas waste heat recovery system comprises a flue gas pipeline, which is composed of a straight pipe part, a corrugated part and a connecting part, one corrugated part is fixedly connected to each end of the straight pipe part, and one connecting part is fixedly connected to the end of each of the two corrugated parts; a plurality of hollow rings are arranged, which are fixedly connected to the straight pipe part and are equidistantly distributed in the straight pipe part, and a solid ring is arranged between every two adjacent hollow rings; and an outer layer stepped heat exchange system is arranged on the plurality of hollow rings and the plurality of solid rings. The temperature of the hot water discharged from the infusion pipe is adjusted within a preset range, the recovered heat is distributed in steps, the demand for hot water of different temperatures in the actual use process is met through further adjustment, the adaptability and practicality are improved, and energy waste caused by cooling or heating after recovering heat is avoided.

This utility model discloses an evaporative air cooler for chemical production, relating to the field of air cooler technology. It includes an air cooler housing, a fan cover fixedly installed on the top of the housing, a fan assembly fixedly installed on the top of the fan cover, a material inlet fixedly installed on one side of the housing, an evaporator plate fixedly installed at the bottom of the housing's inner cavity, a water tank fixedly connected to one side of the evaporator plate, and a heat exchange tube bundle fixedly installed inside the evaporator plate. This utility model utilizes a telescopic shaft to move the filter plate and surface dirt towards the fixed plate during its telescopic movement until the transfer pipe reaches a predetermined position with the fixed plate. Then, a movable push rod extends and retracts, driving a cleaning brush to perform a reciprocating sweeping motion on the filter plate surface, achieving convenient dirt removal and enhancing the device's anti-clogging performance, thus facilitating normal operation of the equipment after filtration.

The utility model relates to the technical field of condenser overhauling, disclose a descaling device of power plant condenser, including rotating pipe and the mobile pipe that is connected with rotating pipe through swivel joint, the rear end of rotating pipe is installed with brush, and the outside of rotating pipe is close to the front end interlaced installation of brush with several nozzles, the outside of mobile pipe is installed with mobile subassembly, and the rear end of mobile pipe is close to the installation of motor no.

This utility model discloses a suspended air preheater, belonging to the technical field of air preheater technology. The suspended air preheater includes a body, ventilation ducts installed at the top and bottom of the body, a first air inlet and a second air inlet located on both sides of the ventilation ducts, a rotating shaft installed on the ventilation ducts, and a rotor installed on the inner side of the body and rotatably connected to the rotating shaft. The body has mounting grooves at the top and bottom corresponding to the rotor. A sealing assembly is detachably connected to the inner side of each mounting groove. This assembly utilizes an elastic metal sealing body located inside a metal frame, which is subjected to an inward clamping force from a fastening spring installed in an elastic cavity. This causes the first and second sealing lips to fit tightly against the outer wall of the rotor, reducing the gap between the body and the rotor, improving the sealing effect, and employing mechanical cleaning, thus ensuring ventilation while reducing energy consumption.

This utility model discloses a waste heat recovery device for an oxalyl chloride distillation column, relating to the field of waste heat recovery technology. The utility model includes a heat exchange tank; the heat exchange tank is frustoconical in shape, and a water storage tank is fixedly connected inside the heat exchange tank. The water storage tank and the heat exchange tank have the same inverted cone inclination angle. An annular slide rail is fixedly connected to the bottom surface of the heat exchange tank, and a turntable is rotatably connected to the surface of the heat exchange tank. Several sets of extension plates are symmetrically hinged to the bottom surface of the turntable. Several sliding rods are symmetrically slidably connected inside the extension plates. Stops are fixedly connected to the periphery of the sliding rods, and springs are provided between the stop blocks and the extension plates. Moving plates are fixedly connected between the sliding rods in the same group, and brush bristles are provided on the moving plates. In use, by pulling the handle back and forth, multiple sets of brush bristles can be driven to repeatedly scrape away impurities on the outer surface of the water storage tank, preventing impurities on the steam from contaminating the outer surface of the water storage tank during waste heat recovery, thus avoiding impact on waste heat recovery efficiency.

The application relates to a gradient flow temperature control heat exchange unit and relates to the technical field of heat exchange units, which comprises a machine box containing two chambers, a cooling mechanism, a cleaning mechanism and a guiding mechanism. Liquid refrigerant is allowed to exchange heat with air through a spiral pipe of the cooling mechanism. The rotating spiral pipe accelerates the circulation of the surrounding air and allows dust to uniformly adhere. Meanwhile, the cleaning mechanism cooperates with the rotating spiral pipe and a spiral sliding groove to allow a brush plate in the cleaning mechanism to pass through the spiral pipe for the whole process, so that the surface dust of the spiral pipe is cleaned. The guiding mechanism dynamically adjusts the direction of the gas entering the chamber by using a swing guide plate, so that the airflow can cover every corner in the chamber, air flows through both ends of the spiral pipe, the utilization rate of the heat exchange area of the spiral pipe is significantly improved, and through cooperation of the cleaning mechanism and the guiding mechanism, the airflow direction is inclined to the sliding direction during cleaning by using the guiding mechanism, so that dust is prevented from falling on the surface of the spiral pipe which has just been cleaned.

The utility model belongs to tail gas waste heat recovery technical field, concretely is a kind of spray drying tower tail gas waste heat recycling closed circuit circulating device, including jar body, the jar body top is equipped with jar cover, the middle part of jar cover top surface is installed into gas pipe, jar cover top surface one side installs into liquid pipe, jar cover top surface other side installs into gas pipe, jar body bottom surface middle part installs first liquid outlet pipe, jar body bottom surface one side installs second liquid outlet pipe, jar cover bottom surface inner wall installs connecting pipe.The utility model has the advantages that the utility model is in cooperation with the cooperation of connecting pipe and gas hole, can make high-temperature tail gas evenly distribute in jar body inside, to make high-temperature tail gas fully and evenly contact with spiral cooling pipe, to improve cooling effect, and simultaneously by setting cleaning component, can clean the surface of spiral cooling pipe, to clean the sundries or crystallization on the outer wall of spiral cooling pipe, to ensure cooling effect.

The application relates to a temperature-controllable air drying device, and belongs to the technical field of cold dryers. The temperature-controllable air drying device comprises an air compressor, a pretreatment mechanism, a heat exchange dehydration container arranged at an output end of the pretreatment mechanism and a refrigeration defrosting mechanism, the pretreatment mechanism comprises a pretreatment shell, a pretreatment pipeline arranged in the pretreatment shell, a first separator arranged at an output port of the pretreatment shell and a cooling tower for treating circulating water. The application has the effects of improving air drying efficiency and prolonging the service life of a pneumatic device.

This utility model discloses a descaling device for an evaporative cooler, specifically relating to the field of cooler technology. It includes a cooler body with a heat exchange tube inside. A spray device is fixedly connected to the inner wall of the cooler body. An annular scraper is movably connected to one side of the heat exchange tube, and a connecting frame is fixedly connected to one side of the annular scraper. A reciprocating screw is slidably connected to one end of the connecting frame, and a second motor is fixedly connected to one end of the reciprocating screw. A collecting device is fixedly connected to the lower right side of the cooler body, and a support plate is fixedly connected to the lower left side of the cooler body. This evaporative cooler descaling device, through its spatial freedom and dynamic control capabilities, achieves an upgrade from "rough cleaning" to "precise descaling," offering significant advantages in improving cleaning efficiency, protecting equipment, saving energy, and intelligent management, while avoiding the "blind spots" of traditional fixed spray systems.

An improved scraper includes vertical plates and rings. The upper and lower sides of the vertical plates are respectively fixed to the outer walls of the rings. A scraper structure is connected to the inner wall of each ring. The scraper structure includes a rod and a cylinder. The outer end of the rod is rotatably connected to the inner wall of the ring, and the outer wall of the rod is fixed to the inner wall of the cylinder. This ensures that the left scraper remains in contact with the outer wall of the square heat pipe. After the right scraper moves to the end of the square heat pipe, the vertical plates are pushed to the left. At this time, the vertical plates, together with the left rod and cylinder, move the left scraper to the left, keeping it in contact with the square heat pipe. The left scraper and the vertical plates are then subjected to force, which removes the scale layer from the outer wall of the square heat pipe, thus cleaning the surface of the square heat pipe. This scraper reduces the cost of cleaning heat exchange pipes, reduces labor, and improves the cleaning effect.

This utility model discloses a multi-point spray water circulation cooling tower, including a cooling assembly, which includes a cooling tower and a cooling water inlet pipe connected to the side of the cooling tower; and a multi-point spray assembly, which includes a water outlet head connected to the top of the cooling water inlet pipe, a threaded hole on the water outlet head, a water outlet pipe connected to the threaded hole, an external thread on the outer wall of the water outlet pipe, a water outlet hole on the outer wall of the water outlet pipe, a storage frame on the side of the water outlet pipe, an arc-shaped groove on the storage frame, and a through hole in the arc-shaped groove. This utility model, through the cooperation of the cooling assembly and the multi-point spray assembly, achieves uniform multi-point spraying of water through fixed-point water outlets and water flow guidance by the storage frame, while avoiding rotational damage and improving the stability of the multi-point spraying of the cooling tower.

The present application relates to heat exchange device technical field, and disclose a kind of energy-saving heat exchange device with self-cleaning function, including shell, heat exchange tube bundle, baffle, cleaning assembly and control piece;Cleaning assembly contains by motor driven positive and negative tooth screw rod and two pieces of cleaning plate of opening sleeve in heat exchange tube bundle, inside of opening is equipped with cleaning brush, can be realized on-line descaling by mechanical scraping brush;Control piece integrates multidimensional data acquisition module and three-level correction logic: flow field fluctuation off-target correction module introduces theoretical clean heat transfer coefficient to distinguish flow fluctuation and real fouling, mechanical load verification correction module is based on pre-inspection power consumption increment cross validation, energy efficiency balance ultimate correction module passes through net income evaluation to determine cleaning economy, adaptive execution drive module is dynamically adjusted motor speed according to scale layer condition;The present application realizes the accurate identification of fouling state and on-demand energy-saving cleaning, avoid frequent invalid action, guarantee heat exchange efficiency long-term stability.

The present application relates to the technical field of condenser cleaning, and discloses a rubber ball cleaning system for condenser rubber balls, which comprises a rubber ball storage cylinder, a base is fixedly installed on the inner bottom wall of the rubber ball storage cylinder, a supporting rod is fixedly connected inside the base, a rubber ball storage net is fixedly connected to one end of the supporting rod, a clamping groove is formed in the inner side of the rubber ball storage net, an adsorption layer is clamped inside the clamping groove, a cover plate is overlapped on the top of the rubber ball storage cylinder, a motor is fixedly installed at the center of the cover plate, and a transmission assembly is fixedly installed at the output end of the motor. The present application has the following advantages and effects: the rubber balls can be cleaned inside the rubber ball storage cylinder and the rubber ball storage net without being taken out, the cleaning of the rubber balls is completed, the rubber balls are prevented from being damaged during the cleaning process, the time for taking out and putting in the rubber balls is saved, and the cleaning efficiency of the rubber balls is improved.

The utility model discloses a low resistance heat exchanger spoiler subassembly, include: first connecting mouth, its characterized in that: the back fixed connection of first connecting mouth has the turbulence component, the inner wall fixed connection of turbulence component has the dust cleaning subassembly, the size of dust cleaning subassembly with the inner wall size of turbulence component is matched, the size distance of dust cleaning subassembly with the inner wall of turbulence component is matched, through turbulence component utilizes the streamline structure in itself to reduce flow separation, reduces the shape resistance, and itself adopts the structure of larger gap to form the discrete layout, allows fluid to restore pressure between turbulence unit, avoids sustained obstruction, and cooperate internal structure to keep the activity of spoiler body simultaneously, with large scale vortex mixing cold and hot fluid, with the minimum resistance cost to exchange the maximum heat gain, cooperate dust cleaning subassembly to carry out dust cleaning to the spoiler in the operation process, to prevent spoiler blockage in this way, further improve the turbulence effect of device.

This utility model belongs to the field of heat recovery technology, specifically a heat exchanger with waste heat recovery, including a shell; multiple connecting pipes are fixedly connected to the side walls and bottom of the shell; a processing box is installed inside the shell; multiple heat exchange membranes are fixedly connected inside the processing box; the multiple heat exchange membranes divide the interior of the processing box into an exhaust channel and a recovery channel; a first fixing rod is fixedly connected inside the shell; a moving pipe is slidably connected to the middle of the first fixing rod; a connecting frame is fixedly connected to the bottom of the moving pipe; multiple pairs of scrapers are fixedly connected to the bottom of the connecting frame; the multiple pairs of scrapers are slidably connected to the exhaust channel separated by the heat exchange membranes; through the above structure, impurities attached to the surface of the heat exchange membranes can be cleaned in a timely manner during the process of recovering heat energy from the exhaust gas, reducing the occurrence of heat exchange effect reduction caused by impurity adhesion, thereby improving the waste heat recovery effect.

The application relates to the technical field of liquefied natural gas storage tanks, and particularly discloses a device and a method for LNG tank reliquefaction and vaporization cold energy utilization, which comprises an outer shell, side shells and a first partition plate, the two side shells are fixedly provided with side plates at one ends away from each other, the top of the outer shell is fixedly provided with a top shell in communication with the side shells, the connection positions of the side shells, the outer shell and the top shell are designed in a sealing mode, and the inner wall of one end of the outer shell away from the first partition plate is fixedly provided with a second partition plate. The heat exchange mechanism is used to make the LNG flow close to the inner wall of the cylinder, so that the seawater can be heat-exchanged when flowing along the outer wall of the cylinder, the heat exchange efficiency is improved, and the power generation efficiency of the cold energy is improved. The second rod body generates centrifugal force on the LNG in the cylinder during rotation, so that the LNG can flow more closely to the inner wall of the cylinder, the heat exchange efficiency of the seawater and the LNG is improved, and the power generation efficiency and the cold energy reuse efficiency are further improved.

The application discloses a single-cooling type refrigerating device and a refrigerating method, and belongs to the refrigerating device field.The single-cooling type refrigerating device comprises a base, a support is fixedly connected to the edge of the top of the base, a compressor is fixedly connected to one side of the top of the base, the output end of the compressor is fixedly connected with a flow guide pipe, a fan frame is fixedly connected to the other side of the top of the base, and a heat dissipation fan is fixedly connected to the inside of one side of the fan frame.The rectangular frame can move back and forth in the inside of the sliding groove, the rectangular frame drives the sponge cleaning ring to slide on the outer surface of the linear pipe section of the condensing pipe through the sliding block and the rotating shaft, then the rectangular frame moves reversely to drive the sponge cleaning ring to return along the original path, the surface of the condensing pipe is wiped circularly and reciprocally, dust is prevented from forming a heat insulation layer on the surface of the condensing pipe, the thermal resistance is prevented from increasing greatly, the condensing effect is ensured, the refrigerating capacity is improved, local heat exchange failure is prevented, condensing pressure fluctuation is prevented, and the compressor is prevented from being damaged.

A cooling tower is disclosed comprising a chamber defined by a peripheral wall and a top wall, wherein the top wall defines an outlet of the cooling tower; a gas inlet formed in the peripheral wall for introducing a gas into the chamber; one or more nozzles configured to spray a liquid to be cooled into the chamber; a fluid outlet for allowing cooled liquid to exit the chamber; and one or more mist eliminators arranged within the chamber. The mist eliminators are arranged such that fluid moving from within the chamber to the outlet passes substantially radially inwardly through the one or more mist eliminators towards a centreline of the cooling tower before reaching the outlet. A method of cooling a liquid in a cooling tower and a method of cleaning a cooling tower are also disclosed.

The application relates to the field of energy storage refrigeration equipment, in particular to an energy storage refrigeration machine capable of high-efficiency heat dissipation, which comprises a machine box, air inlet plates and air outlet plates are arranged at two ends of the machine box, the air inlet plates and the air outlet plates are both composed of multiple fins, an air extractor is arranged at the air inlet plate, a dust removal assembly is additionally arranged in the machine box, the dust removal assembly is used for regularly treating dust on the fins, the dust removal assembly comprises a dust removal plate and two driving plates, the two driving plates are distributed at left and right ends of the air inlet plate, the driving plates are rotationally arranged on one side of the air inlet plate away from the air extractor, the dust removal plate is arranged in the air inlet plate, and the dust removal plate is arranged in a lifting mode in the vertical direction and in a sliding mode in the horizontal direction. The application can efficiently clean dust and sundries among fins of a heat dissipation module of the refrigeration machine, effectively guarantees the heat dissipation performance of the refrigeration machine as a whole, and enables the refrigeration machine to always maintain good heat dissipation effect in a long-time working state.

This application relates to the technical field of heat exchangers, and in particular to a preheater with automatic ash removal capabilities. The preheater includes a heat exchange box with an air inlet and an air outlet. A cleaning mechanism and multiple heat exchange tubes are disposed within the heat exchange box. The cleaning mechanism includes a cleaning plate that reciprocates intermittently within the heat exchange box. The cleaning plate has multiple cleaning holes that correspond to the heat exchange tubes, and each cleaning hole contains a cleaning component. This application utilizes the intermittent reciprocating motion of the cleaning plate in the cleaning mechanism to drive a flexible scraper to clean the ash accumulated on the outer wall of the heat exchange tubes. This prevents ash buildup from affecting heat exchange efficiency, ensuring the heat exchange effect of the preheater and reducing energy consumption. Simultaneously, the intermittent reciprocating motion allows for effective cleaning when ash accumulates to a certain level, avoiding energy waste and mechanical wear from continuous cleaning, thus achieving a balance between cleaning efficiency and component lifespan.

The application discloses a high-efficiency energy-saving tubular heat exchanger, which comprises a pipe body, a throttling assembly, a heat dissipation assembly and a cleaning assembly. One end of the pipe body is fixedly connected with a cooling pipe inlet, and the other end is fixedly connected with a cooling pipe outlet. Two fluid inlets are arranged on the axial outer wall of the pipe body, and two fluid outlets are arranged on the axial outer wall of the pipe body. The throttling assembly is used for controlling the outflow and inflow of water flow. The heat dissipation assembly is used for assisting the heat dissipation of the pipe body. The cleaning mechanism is used for cleaning the pipeline. Through the arrangement of the above components, the cooling demand under different working conditions can be effectively met, and the heat dissipation effect is improved.

The present invention concerns an apparatus for cleaning open draft boiler surfaces in a combustion or incineration plant in service, said apparatus comprising a cleaning head having a coupling for connecting a cleaning liquid hose to the cleaning head for feeding a cleaning liquid to a rotating nozzle head having a plurality of nozzles from which the cleaning liquid can be sprayed against boiler surfaces during rotation of the nozzle head, wherein the cleaning head is provided with at least one sensor for monitoring the cleaning operation.

This invention discloses an energy-saving flue gas condensation heat recovery device for gas-fired boilers, relating to the technical field of flue gas condensation heat recovery. It includes a main shell, internally divided into a flue gas condensation chamber and a condensate collection chamber by a baffle plate; a condensation heat exchange module, located within the flue gas condensation chamber, consisting of multiple heat exchange bends connected in parallel; and an external pipe located outside the main shell and connected to the heat exchange bends, through which boiler return water flows sequentially. It also includes a self-cleaning system for cleaning the outer wall of the heat exchange bends. The self-cleaning system achieves reciprocating motion along the surface of the heat exchange bends, employing a flexible design with high adhesion to the pipe wall, or a rigid scraper with a certain angle. As it moves along the pipe wall, it directly applies shearing force to the dirt layer, forcefully peeling the deposits from the substrate. A steering and limiting component ensures that the scraper remains tightly attached to the pipe wall during bending sections, achieving thorough cleaning without dead angles.

This invention provides an energy-saving heat recovery device for an aluminum rod hot shearing furnace, relating to the field of energy-saving heat recovery technology. The energy-saving heat recovery device for the aluminum rod hot shearing furnace includes: a base, a heat exchange box, and multiple fume extraction devices. The heat exchange box is fixedly installed on the top of the base, and the multiple fume extraction devices are all fixedly installed on the inner wall of the top of the heat exchange box. A gas collecting cylinder is fixedly installed on the top of the heat exchange box. A waste heat recovery treatment mechanism is provided inside the base. The waste heat recovery treatment mechanism further includes a pretreatment component and a heat exchange switching component. The pretreatment component is used to straighten and remove dust from the flue gas. The energy-saving heat recovery device for the aluminum rod hot shearing furnace provided by this invention has the advantages of uniform flue gas flow, balanced heat exchange on the heat exchange plate surface, reduced localized scabbing, switching between main and auxiliary heat exchange plates, and cleaning of the sludge layer on the surface of the heat exchange plates.

The utility model discloses a kind of wall-hanging stoves with cyclic self-cleaning function, it is related to self-cleaning wall-hanging stove technical field, including wall-hanging stove and the fixed plate of wall-hanging stove inside, fixed plate side is equipped with multiple rotary connecting blocks, every rotary connecting block side is equipped with two intercommunication limit pipes, rotary motor is located heat insulating plate side, drives power connecting rod rotation, and then make rotary connecting rod rotate, the rotation of rotary connecting rod will drive rotary sprocket rotation, rotary chain is sleeved on multiple rotary sprockets, the rotation of rotary sprocket drives rotary chain to circulate rotation in rotary connecting block inside, intercommunication fixed pipe, reset guide pipe, cleaning fixed block and constraint guide pipe, rotary chain is fixedly provided with cleaning disc, the inner wall of intercommunication fixed pipe and intercommunication limit pipe is cleaned, deposit in pipeline inner wall impurity, scale etc. Are scraped down, thereby reduce impurity and scale accumulation, improve thermal efficiency, can reduce maintenance cost simultaneously.

This utility model discloses a shell-and-tube heat exchanger and heat exchange system. The shell-and-tube heat exchanger includes an inner tube and an outer tube sleeved around the inner tube, with an annular channel between the inner and outer tubes. Multiple finned units are arranged on the outer wall of the inner tube within the annular channel. Each finned unit includes multiple corrugated fins arranged at equal intervals along the circumference of the inner tube, and the corrugated fins are arranged along the axial direction of the inner tube. The corrugated fins in every two adjacent finned units are arranged at uniform intervals along the circumference of the horizontal projection plane of the inner tube. The corrugated fins on the heat exchange tube of this utility model increase the heat transfer area, thereby increasing the effective heat transfer area of ​​the shell-and-tube heat exchanger and resulting in a large heat transfer load capacity.

To provide a soot blower unit, an exhaust gas after treatment device, an internal combustion engine, and a method for blowing off soot from a catalyst so as to avoid known defects, in particular, to provide certainty and durability in removing the soot from the catalyst.SOLUTION: The invention relates to a soot blower unit 20 for an exhaust gas after treatment device 10 for an internal combustion engine 1, the exhaust gas after treatment device 10, the internal combustion engine 1 and a method for blowing soot from a catalyst 30. The soot blower unit 20 comprises a supply line 21 for providing pressurised air and at least one injection device 22 with a soot blowing valve 23, in particular, a diaphragm valve, being fluidly connected or connectable to the supply line 21 for providing pressurised air. The soot blower unit 20 comprises a pipeline 24 for providing back-up sealing air, fluidly connected or connectable to the supply line 21 for providing pressurised air, upstream of the at least one injection device 22.SELECTED DRAWING: Figure 1

The application is suitable for the technical field of mounting structure, and provides a wall-type reheater soot blower mounting structure, which comprises a mounting assembly and an adjusting assembly, the mounting assembly comprises an inlet header and an outlet header, the bottom ends of the inlet header and the outlet header are both provided with a plurality of mounting rings two, the front ends of the mounting rings two are both provided with a slot on both sides, the top ends of the mounting rings two are both provided with a placing groove on both sides, the placing grooves are both communicated with a groove at one end of the inner side, the upper and lower ends of the groove are both communicated with a moving groove, the inner walls of the moving grooves are both provided with a rotating shaft, and the outer wall of the rotating shaft is fixedly connected with an adjusting plate. The device solves the problem of drilling holes when the soot blower is mounted on the wall-type reheater, achieves convenient installation, reduces damage to the inlet header and the outlet header, thereby prolongs the service life of the inlet header and the outlet header, and facilitates comprehensive cleaning of the ash on the wall-type reheater.

The application provides a drying equipment heat exchanger convenient to clean, and relates to the field of heat exchangers, which comprises a shell, a wet air inlet and a dry air outlet arranged on the shell, a heat exchange module movably arranged in the shell, the heat exchange module comprising a frame and a heat exchange tube bundle arranged in the frame, a flow guide structure arranged on the heat exchange tube bundle, the flow guide structure comprising a plurality of first flow guide plates and second flow guide plates alternately inclined along the air flow direction, a space between the first flow guide plates and the second flow guide plates forming a main channel, the first flow guide plates and the second flow guide plates being provided with notches for ash falling, and a collection structure detachably arranged at the bottom of the shell, the collection structure comprising a collection groove located directly below the flow guide structure and a flow guide surface arranged on the collection groove, the flow guide surface being inclined towards the inside of the collection groove. The application realizes the unification of efficient heat exchange, automatic ash cleaning, convenient maintenance and reliable operation, helps to reduce the system energy consumption, and guarantees the continuous and stable production of the drying process.

This utility model provides an economizer sealing device, relating to the field of economizer technology. The utility model includes an economizer body, which is supported by legs placed on the ground. An inlet and an outlet are respectively located at both ends of the economizer body. A sealing ring is fixedly connected to the inlet of the economizer body, allowing the inlet to connect to an external flue pipe. Several heat exchange tubes are installed inside the economizer body, each with a serpentine cross-section. An inlet and outlet water pipe are fixedly connected to both ends of the heat exchange tubes, and both are fixedly connected to the economizer body. A cleaning device is installed inside the economizer body to clean the surface of the heat exchange tubes. This utility model achieves the effect of cleaning the surface of the heat exchange tubes through the cleaning device, preventing dust accumulation on the surface and thus avoiding poor flue gas heat exchange.