67results about How to "Reduce the effect" patented technology

The invention belongs to the technical field of new materials, and particularly relates to a PEDOT electromagnetic shielding polymer film, a preparation method and application, a substrate coated with an oxidizing agent solution is subjected to a polymerization reaction in steam containing an EDOT monomer, then an oxidizing agent is removed, drying is performed, and the PEDOT electromagnetic shielding polymer film is obtained; the oxidant solution comprises ferric salt, an additive and water, and the additive is one or more of polyvinyl alcohol, polyvinylpyrrolidone, starch, polyethylene glycol and a polyoxypropylene polyoxyethylene copolymer; the PEDOT electromagnetic shielding polymer film provided by the invention has relatively high density and lower resistance, and can improve the electromagnetic shielding effect.

The invention discloses an IMU (Inertial Measurement Unit)-based backdoor attack method and an IMU-based backdoor attack system, which are used for developing an attack technology capable of triggering a preset behavior under a specific condition by taking magnetometer data in acquired data as a target of embedding a backdoor by focusing on the characteristics of IMU sensor data. According to the method, time-frequency representation of magnetometer data is obtained by applying wavelet transform to the magnetometer data, backdoor features are embedded into specific frequency components, the backdoor features are used as backdoor triggers to be injected into benign samples, and hidden efficient backdoor attacks related to the triggers and the samples are achieved. And meanwhile, the flexible backdoor trigger is adopted, and the attack effect of the backdoor attack technology is controlled, so that the backdoor concealment is further improved. The method has important theoretical and practical significance in the fields of attack and defense for the security problem of the IMU-based human body sensing technology.

The invention provides a preparation method of N-methylaniline, and relates to the technical field of synthesis of N-methylaniline. The fixed bed reactor is adopted, under the condition that the specific catalyst exists, aniline, carbon dioxide, carbon monoxide and hydrogen are mixed and react to prepare N-methylaniline, the final conversion rate of aniline can reach 98% or above, and the N-methylaniline product yield is high.

The utility model provides an explosion-proof wear-resistant tire, which relates to the tire field, and comprises a tread, a sidewall auxiliary reinforcing layer and a mute piece, the inner side of the tread is provided with a cap belt winding layer, a steel wire belt layer and an edge belt layer, the inner side of the edge belt layer is provided with a cord fabric layer and a lining layer, the inner side edge of the lining layer is connected with a tire bead assembly, and the tire bead assembly is connected with the tire sidewall auxiliary reinforcing layer. The tire side auxiliary reinforcing layer is arranged on the outer side of the cord fabric layer, an outer tire side is arranged on the outer side of the tire side auxiliary reinforcing layer, the tire side auxiliary reinforcing layer comprises polyurethane reinforcing layers on the outer side and a solid hard rubber layer between the polyurethane reinforcing layers, and the mute piece is bonded to the inner wall of the lining layer and comprises a sound absorption layer. And a heat insulation cavity is formed between the sound absorption layers. The anti-explosion wear-resistant tire solves the problems that an existing anti-explosion wear-resistant tire is large in weight, poor in supporting effect and not good in mute performance.

The invention discloses a boiler early warning system and method under a low-load working condition, and the system comprises a real-time monitoring and data collection system, a central monitoring system and a data processing platform, and the real-time monitoring and data collection system completes the detection of the operation state of a boiler through a sensor; the central monitoring system and the data processing platform are in signal connection with the real-time monitoring and data acquisition system; according to the boiler early warning system and method under the low-load working condition, by completing real-time monitoring and data collection, safe, stable and efficient operation of a boiler can be ensured, meanwhile, important decision support and early warning information can be provided for maintenance personnel, effective monitoring and early warning are conducted according to the operation working condition of the boiler, safety and redundancy design is additionally arranged, and the boiler early warning system and method are suitable for being popularized and applied. The stability and reliability of the system can be ensured; in combination with a data analysis and automatic control system for low-load working condition recognition, early recognition of the low-load working condition can be achieved, corresponding measures are taken to optimize operation of the boiler, and operation efficiency and safety are improved.

The invention discloses a hedgehog-like thorn three-dimensional fiber three-dimensional woven composite material and a preparation method thereof. The composite material comprises at least two resin layers, at least two woven fiber layers and at least one connecting fiber layer, the connecting fiber layer comprises a plurality of strip-shaped attaching fibers; the winding part of the strip-shaped attaching fiber is positioned between the one-way strip-shaped fiber and the one-way fiber; and the non-winding part of the strip-shaped attaching fiber is attached to the other non-winding part of the strip-shaped attaching fiber. The woven fiber layer and the resin layer are of a rigid structure, the connecting fiber layer is of a flexible structure, and the woven fiber layer and the connecting fiber layer cooperate with each other and have excellent performance in the aspects of force bearing, load resistance, bending resistance, specific strength, specific buckling strength and the like. In addition, the one-way ribbon fibers and the one-way fibers are interwoven to form a woven fiber layer; the strip-shaped attaching fibers are interwoven on the one-way fibers of the two woven fiber layers to form the connecting fiber layer, and the strip-shaped attaching fibers are attached to each other, so that the effects of toughening and delaying buckling are achieved.

The utility model provides a water anti-freezing device for an electric furnace electric appliance, which comprises a first water inlet pipe, a second water inlet pipe, two switch valves, a liquid level meter and steam equipment, and the first water inlet pipe is communicated with a water tank; the second water inlet pipe is communicated with an external water pipe; the two switch valves are arranged on the first water inlet pipe and the second water inlet pipe respectively, and one of the two switch valves is selected to be opened; the liquid level meter is arranged in the water tank, and the liquid level meter is in communication connection with the two switch valves; the steam equipment is located in the middle of the cooling water pipe and comprises a steam pipeline and a plurality of air outlets located in the top and the bottom of the steam pipeline, and the steam pipeline is parallel to the horizontal direction; when the reading of each liquid level meter is lower than a preset value, the switch valve on the second water inlet pipe is opened, and when the reading of each liquid level meter is equal to or larger than the preset value, the switch valve on the first water inlet pipe is opened.

The utility model discloses a portable rat open field experiment device, which comprises a middle block, two sides of the middle block are symmetrically hinged with a bottom plate, the top surface of the bottom plate at each side is provided with fences except for the hinged side, the front side and the rear side of the bottom plate are provided with main plates, the main plates are positioned in the fences, the bottom surface of each main plate is provided with a row of insertion blocks, and the insertion blocks are inserted into the middle block. According to the technical scheme, the whole device is detachable and foldable, after rat open field experiment operation is finished, the main plate, the side plates, the vertical bayonet sockets and the secondary plate can be detached, the bottom plates on the two sides of the middle block are folded, and the main plate, the side plates, the vertical bayonet sockets and the secondary plate can be detached, so that the rat open field experiment operation is completed. According to the open field experiment device, the two bottom plates are folded, a relatively closed space is formed between the top enclosures of the two bottom plates, the detached parts can be stored, the folded bottom plates can be connected through the connecting assemblies, finally, the effect of reducing the size of the open field experiment device can be achieved, and an operator can carry and move the device conveniently.

The radioactive source code identification system comprises a camera system, a signal line, a hard disk video recorder and a display, wherein the camera system is composed of a telescopic rod, a rear sealing end cover, a stainless steel shell, an optical zoom camera, an LED light supplement lamp and lead-containing anti-radiation glass; the lead-containing anti-radiation glass is arranged at the front end part of the stainless steel shell in a sealing manner; the camera is fixedly arranged in a sealing cavity in the stainless steel shell; by means of the structure, when the radioactive source under the source storage well is observed, the distance between the camera and the radioactive source can be adjusted, or the focal length of the camera can be adjusted through the hard disk video recorder, the LED light supplementing lamp can be turned on through the hard disk video recorder for illumination, the LED light supplementing lamp can be adjusted to the proper brightness, and therefore clearer radioactive source coded images can be obtained.

The invention provides a large-diameter long-distance jacking pipe crossing construction method for complex geology, which relates to the field of jacking pipe construction and comprises the following steps: conducting geological exploration, using a geological drill to drill holes under the surface, the depth of the holes being 20-30m, and the spacing between the holes being 1-10m; arranging control points in a starting well and a receiving well, the control points being arranged on a theoretical jacking axis to provide a reference for subsequent laser measurement, and setting up a laser theodolite to ensure that the height of the laser point matches the height of the pipeline axis, and the direction of the laser point coincides with the central axis of the pipeline; the invention has the beneficial effects of: when a large-diameter pipeline is crossed over a long distance, an auxiliary positioning pipe is used to support the pipeline below, so that the bending and deviation generated when the pipeline is crossed over a long distance in the soil body can be effectively reduced, and when a large-diameter jacking machine is performing jacking operation in the soil body, the auxiliary positioning pipe plays the role of an auxiliary guide for the large-diameter jacking machine, thereby achieving the effect of reducing the deviation.

The utility model relates to the technical field of hot rod temperature field simulation tests in extremely cold regions, in particular to a hot rod temperature field simulation test device applied to extremely cold regions, which is matched with a frozen soil layer simulation soil sample for use and comprises a test box for containing the frozen soil layer simulation soil sample and a plurality of hot rod units, the plurality of hot rod units are sequentially arranged along the length direction of the test box at intervals of one time, two times and four times of a fixed distance, and are used for testing the influence of the intervals of the hot rod units on the temperature field, so that the conditions of hot rod temperature fields with different intervals can be tested through the hot rod units arranged at different intervals, and the test efficiency is improved. Meanwhile, a conveying pipe and a wire sequentially penetrate through each hot rod unit from bottom to top, fluid in the conveying pipe can take away heat in soil layers with different depths, the effect brought by reducing the temperature of the soil layers is tested, and the wire is connected with sensors at different depths, so that the temperature of the soil layers with different depths is measured.

The application provides an analgesia system based on brain nerve oscillation regulation, relates to the technical field of pain regulation, and first establishes a brain signal standardization information base of healthy people; for each pain patient, the brain nerve signal index of the pain patient is compared with a standard normal range obtained from the brain signal standardization information base of healthy people to determine abnormal electroencephalogram nerve indexes of each pain patient; then, according to the pain specificity of each pain patient, the correlation between the behavior indexes and the abnormal electroencephalogram nerve indexes of the pain patient is analyzed to determine potential regulation target points; the regulation target points to be intervened and regulation modes are selected from the potential regulation target points; different regulation modes are selected according to actual requirements to regulate the pain of the pain patient; and then, the pain regulation effect is evaluated, so that the effect of relieving pain is achieved, the analgesia system has the characteristics of safety, economy and easy operation, and is expected to be applied to the treatment of clinical pain.

The present invention discloses a deep image retrieval method for small sample scenarios, especially when the available learning samples are relatively sparse, the present invention is used to obtain more semantic information from a small number of samples by combining contrastive learning, so as to improve the representation and encoding capabilities of the deep hash model. First, training samples are sampled from a database, and positive and negative sample copies are generated by random enhancement. Then, a hash deep network is used to generate continuous features to retain more semantic information, and finally a binary code is generated by mapping. At the same time, the binary code of the database sample is maintained using the similarity matrix between the training samples and between the training samples and the database. After the model converges at the end of the training phase, for external samples, a deep hash network can be used to calculate its binary code, and then the binary code of the database can be directly retrieved. Compared with the prior art, the present invention can improve the efficiency and accuracy of image retrieval, and is more robust when facing small sample scenarios.

The utility model discloses an aluminum alloy aging oven which comprises a bottom plate, an aging oven body fixedly installed on the bottom plate, two cooling water tanks fixedly connected to the bottom plate, temperature sensors installed in the cooling water tanks, first coolers fixedly installed on the cooling water tanks, and two water pumps fixedly installed on the aging oven body. A first conveying pipe is connected between the water pump and the cooling water tank, a second conveying pipe is connected between the water pump and the aging furnace body, a heat exchange pipe is connected into the aging furnace body and connected with the second conveying pipe, and a first electric valve is installed on the second conveying pipe. Hot water is cooled by controlling the first cooler, so that the cooling speed of the hot water is increased, and the problem that heat exchange cannot be carried out due to high temperature of the hot water when the aging oven body needs rapid heat exchange is avoided.

The utility model discloses a steel wastewater zero discharge crystallization salt separation device which comprises a dosing tank, a stirring mechanism for stirring and mixing chemicals and wastewater is arranged in the dosing tank, a crystallization tank is arranged on one side of the dosing tank, and a cleaning mechanism for cleaning the four walls of the crystallization tank is arranged in the crystallization tank. A moving mechanism for cleaning crystals out of the crystallization box is arranged outside the crystallization box, a connecting pipe is horizontally and fixedly connected to the top of the crystallization box, the other end of the connecting pipe is fixedly connected with a collecting box, the connecting pipe is communicated with the crystallization box and the collecting box, and a flushing mechanism for cleaning the interior of the crystallization box is arranged in the collecting box. According to the utility model, the inside of the crystallization box is cleaned, the situation that the crystallization and salt separation efficiency and effect are reduced due to the fact that a large amount of crystals are attached to the crystallization box due to long-time crystallization and salt separation operation is avoided, the crystallization and salt separation efficiency and effect are improved, and stirring and mixing of chemicals and steel wastewater are realized; and the steel wastewater can be better subjected to chemical adding treatment.

The invention belongs to the technical field of road building materials, and relates to an aerogel composite modified heat-resistant thermal-insulation asphalt material which comprises the following components in parts by mass: 8-15 parts of SiO2 aerogel powder; 1-4 parts of a carbon nanotube; 1-3 parts of hollow glass beads; 80 to 85 parts of asphalt; the SiO2 aerogel powder, the carbon nanotubes and the hollow glass beads form an aerogel composite modifier; in the aerogel composite modified heat-resistant thermal-insulation asphalt material, the doping amount of the aerogel composite modifier is 15%-20%. The invention further discloses a preparation method and application of the aerogel composite modifier, the aerogel composite modifier composed of the SiO2 aerogel powder, the carbon nanotubes and the hollow glass beads is used in the asphalt pavement, the durability of the pavement can be improved, and the tolerance of the pavement structure to extreme air temperature can also be improved.

The utility model relates to the technical field of chemical fabric production and manufacturing, in particular to anti-static chemical fabric which comprises a base fabric layer, an anti-static layer is arranged on the base fabric layer and comprises first anti-static fibers and first fixing strips, the multiple sets of first fixing strips are arranged on the base fabric layer in parallel, the first fixing strips are arranged in a wave shape, and the first anti-static fibers are arranged on the first fixing strips. The external connection layer is arranged on the outer side of the anti-static layer, and the external connection layer is made of the one-way moisture conduction material, so that the anti-static layer can be protected, and liquid can be prevented from permeating into the anti-static layer to make contact with the anti-static layer, so that the effect is prevented from being weakened.

The present invention discloses a sleeve grabbing and riveting integrated device, including a clamping system and a riveting system. The sleeve is clamped and transported to a riveted part in the riveting system by the clamping system; and then the sleeve is riveted to both ends of the riveted part by the riveting system. In the present application, the sleeve grabbing, transporting, positioning and riveting process with the riveted part do not require manual operation, and the degree of automation is high.

The invention provides a person information big data screening method and system based on person and certificate identification, and relates to the technical field of computers, and the method comprises the steps: firstly obtaining verification information of person and certificate identification equipment through a data collection interface; the person and certificate identification equipment is used for verifying and comparing a person and a certificate, and verification information comprises verification identification parameters; then on-site video data of the personnel information is called in the target video monitoring equipment based on the verification identification parameters; based on a BFS breadth-first algorithm, image retrieval of time and space dimensions is carried out on the field video data, and target personnel information matched with the verification information is determined; through the method, people and certificate identification and field personnel information screening and positioning are realized, the technical problems of high difficulty and high cost of personnel information screening and management are solved, unified service management for personnel information is realized, and the effects of reducing management difficulty and calculation cost are achieved.

The utility model relates to the technical field of injection molding, in particular to an efficient cooling water tank for injection molding, which comprises a water tank box, a backflow box is fixedly mounted at the bottom end of the water tank box, a first heat dissipation fin group is fixedly mounted in the backflow box, an end cover is fixedly mounted at the top end of the first heat dissipation fin group, and a cooling water tank is fixedly mounted at the bottom end of the first heat dissipation fin group. A support is installed at the bottom end of the backflow box, a semiconductor chilling plate is fixedly installed on the support, the cold end of the semiconductor chilling plate is attached to the first heat dissipation fin set, water pumps are evenly and fixedly installed on the backflow box, guide pipes are installed between the water pumps and the water tank box, and the water tank box is communicated with the end cover. According to the cooling device, the clean water can circularly dissipate heat and cool the part, hot water making contact with the part can make contact with the first heat dissipation fin set in the circulating process, the first heat dissipation fin set can cool water with the high temperature, the circulating clean water is kept at the low temperature, and the effect of improving the cooling speed is achieved.

The utility model relates to braided cable processing equipment, which relates to the technical field of cable processing, and comprises a processing table, the top of the processing table is provided with a cleaning mechanism, a braiding mechanism and a take-up mechanism, the cleaning mechanism, the braiding mechanism and the take-up mechanism are sequentially arranged along the length direction of the processing table, and the middle part of the braiding mechanism is provided with a centering pressing assembly; according to the utility model, the following problems can be solved: the cable is cleaned through the cleaning brush, and dust and impurities on the cable are prevented from causing a gap between a sheath layer and the cable and reducing the actual effect of the sheath layer; dust and impurities at the bottom of the cleaning shell are collected through cooperation of a dust scraping inclined plate and a collecting box, and the dust and impurities in the cleaning shell can be conveniently treated by an operator; according to the utility model, the rotating ring is rotated to enable the pressing rod to push the cable to center and tighten the cable, the cable can be prevented from vibrating in the braiding process, the cable is prevented from deviating and inclining in the braiding process to influence the braiding effect, and the braiding quality is improved.

The invention discloses an automatic plasma bag breaking machine and a using method thereof. The automatic plasma bag breaking machine comprises a machine base, an annular track table is arranged in the middle of the machine base in an upward protruding mode, an annular conveying assembly is installed in the circumferential direction of the annular track table, and clamping mechanisms are installed on the annular conveying assembly at intervals; the portion, located on the outer side of the circular track table, of the machine base is concavely provided with an annular groove, and a cutting station, a cutting detection station, a bag clamping roller mechanism and a waste bag recycling station are sequentially arranged along the annular groove. The annular groove comprises a collecting pool and a liquid collecting groove, and the width and the depth of the collecting pool are both larger than the corresponding size of the liquid collecting groove. The collecting pool is located below the cutting station, the cutting detection station and the bag clamping roller mechanism, penetrates through the machine base and is connected with a tank body groove; the plasma bag cutting device has the advantages that plasma bags can be automatically cut, liquid flows into the tank body groove through the collecting pool to be collected, empty broken bags are automatically collected, the yield is greatly increased, the quality is guaranteed, plasma pollution is effectively reduced or even avoided, and the labor cost is saved.

The utility model relates to a silicon wafer cooling device, which comprises a machine frame and is characterized by further comprising a conveying belt arranged on the machine frame. The silicon wafer box with an upper opening is arranged on the conveying belt; the quenching box is arranged on the rack, an air inlet is formed in the upper portion of the quenching box, and an air supply device is arranged at the air inlet; the quenching chamber is arranged in the quenching box, the conveying belt conveys the silicon wafer box to pass through the quenching chamber, and at least one heat exchange tube is arranged in the quenching chamber above the conveying belt. The air flow blown into the quenching cavity from the air inlet is firstly subjected to heat absorption and cooling by the heat exchange tube and then blown to the silicon wafer, the temperature of the air flow is low, the effect of air cooling of the silicon wafer is enhanced, the heat exchange tube is arranged in the quenching cavity, the temperature in the quenching cavity can be continuously reduced, and the cooling effect of the silicon wafer is ensured.

The invention relates to the technical field of punching machines, in particular to a shock absorber for a punching machine. The punching machine body comprises a base, an upper die and a lower die. The upper mold is fixedly connected to one side of the outer wall of the base through a connecting device; a damping shell is fixedly connected to the top end of the outer wall of the base; the outer side wall of the lower mold is slidably connected to the inner side wall of the damping shell. The lower die is subjected to impact force to drive a damping block to move, the damping block drives a second spring to contract to absorb force, when the second spring prepares to rebound, due to the fact that the lower die is arranged on the top, the second spring downwards rebounds to extrude a round block, the round block drives a square block to move downwards, and rebound of the second spring is absorbed by the square block and a first spring; and a square block moves downwards to drive a connecting block to move downwards, so that the connecting block extrudes a pair of vibration absorption blocks and a third spring, the third spring shrinks, vertical force is converted into transverse force, and the transverse force is absorbed and resolved, and the machining yield of the metal materials is increased.

The invention discloses a sludge dewatering device for environmental protection, and relates to the technical field of sludge treatment device.The sludge dewatering device for environmental protection comprises a machine body, a feeding port is formed in the top of the machine body, a motor is arranged on the right side of the feeding port, and a chemical feeding mechanism is arranged on the right side of the motor; a dewatering mechanism and a discharging mechanism are arranged at the rear end of the medicine feeding mechanism; wherein the medicine feeding mechanism comprises a medicine inlet, a medicine feeding sliding plate, a connecting rod, a moving block, a poking rod, an inclined surface block, a moving rod, a fixed shaft, a swing plate, a switch block, a switch rod, a stirring rod and a rotating shaft, when the motor is started, the switch rod makes contact with the switch block, the medicine feeding sliding plate is intermittently opened, the connecting rod pushes the moving rod to move, and the moving rod moves to push the inclined surface block and the moving rod to move; the inclined surface block pushes the flocculant to move towards the chemical inlet, and the movable rod pushes the swing plate to swing, so that the flocculant stacked below is prevented from caking, and the reaction efficiency of the flocculant and sludge is not influenced.

The application relates to a steel wire rope device for suspending oxygen scavengers of a tobacco stack and a tobacco stack maintenance system. A first suspension support assembly is configured to span a gap between a first tobacco stack and a second tobacco stack and is connected to the first tobacco stack and the second tobacco stack respectively. A second suspension support assembly is also configured to span the gap and is connected to the first tobacco stack and the second tobacco stack respectively. The second suspension support assembly is spaced apart from the first suspension support assembly. A first end of a steel wire rope is connected to the first suspension support assembly through a steel wire rope tensioner, and a second end of the steel wire rope is connected to the second suspension support assembly. The steel wire rope is configured to be arranged in the gap and is used for suspending a medicine strip in the gap. The application has the advantage of easily arranging the medicine strip. The medicine strip is arranged in the gap at any position between the tobacco stacks instead of being placed on the top of the tobacco stacks. The application is not restricted by the traditional medicine box which must be placed on the top of the tobacco stacks. An operator does not need to climb to the top of the tobacco stacks. The application also solves the problem of narrow operation space caused by small distance between the top of the tobacco stacks and the ceiling.

The invention discloses a post-treatment device for ship tail gas, and belongs to the technical field of ship tail gas treatment.The post-treatment device comprises a gas inlet box, the two sides of the gas inlet box communicate with a gas inlet pipe and a gas outlet pipe correspondingly, a piston plate is installed in the gas inlet box in a sliding and sealing mode, and a controller, a driving motor and two water pumps are fixedly installed at the top of the gas inlet box; the driving motor is used for driving the water pump to operate, and the rear side of the air inlet box is fixedly connected with a rotating motor. The desulfurizing tower is used for desulfurizing the tail gas; the desulfurizing tower is used for desulfurizing tail gas, the denitration tower is used for realizing denitration of the tail gas, spraying mechanisms and stirring mechanisms are arranged in the desulfurizing tower and the denitration tower, and a communicating pipe is communicated between the desulfurizing tower and the denitration tower. The content of pollutants in treated tail gas is monitored through the arranged sensor, and the dosage of the treatment solution and the gas inlet speed of the treatment device are automatically adjusted according to the monitoring result, so that it is guaranteed that the pollutants in the tail gas are thoroughly purified, and meanwhile resource waste is avoided.

This utility model discloses a seawater desalination pretreatment filtration system, belonging to the field of seawater desalination. It includes a chemical dosing mixer, a modified fiber filter, a coarse sand filter, a fine sand filter, and a product water tank. The outlet of the chemical dosing mixer is connected to the inlet of the modified fiber filter, the outlet of the modified fiber filter is connected to the inlets of the coarse and fine sand filters, and the outlet of the coarse sand filter is connected to the inlet of the fine sand filter. By setting up a filtration system consisting of a chemical dosing mixer, a modified fiber filter, a coarse sand filter, and a fine sand filter, and utilizing the characteristics of modified polypropylene and quartz sand filter media of different particle sizes, combined with the flexible two- or three-stage filtration based on water quality indicators such as seawater turbidity, SDI15, and TOC, and the addition of coagulants when necessary, this system solves the problems of poor treatment effect, high energy consumption, and high investment and operating costs of traditional seawater desalination pretreatment processes, achieving stable effluent quality and reduced costs.

This invention discloses a louvered baffle for controlling exhaust gas flow in a low-pressure SCR (Separator-type Controller), comprising: a valve body; an exhaust pipe for discharging exhaust gas generated during engine combustion on a ship is hermetically connected to a first side; a first discharge pipe for directly discharging exhaust gas to the outside is hermetically connected to a second side; and a detour pipe for diverting exhaust gas and routing it to the SCR is hermetically connected to a third side; the first discharge pipe and the detour pipe are spaced apart at 90-degree angles; a louvered first blade section for opening and closing the outlet of the first discharge pipe; a louvered second blade section for opening and closing the outlet of the detour pipe; and a flow path opening and closing section that allows the blades of the first blade section and the blades of the second blade section to interact, thereby selectively opening the first discharge pipe and closing the detour pipe, or closing the first discharge pipe and opening the detour pipe.