1093 results about "Water jet" patented technology

Food material processing equipment based on water jet comprises a sorting assembly, a food material overturning assembly I, a food material overturning assembly II, a cleaning assembly, a discharging guide rail and a material blocking assembly, the discharging end of the sorting assembly is higher than the feeding end of the food material overturning assembly I, and the sorting assembly and the food material overturning assembly I communicate with each other through the discharging guide rail; the feeding end of the food material overturning assembly II is higher than the discharging end of the food material overturning assembly I, and the feeding end and the discharging end are communicated through a discharging guide rail. The food material overturning assembly I comprises a workbench III, a revolution assembly and an autorotation assembly, the revolution assembly is rotationally installed on the workbench III, and the autorotation assembly is arranged at the rotating end of the revolution assembly. By arranging the food material overturning assembly I, quasi-cylindrical food materials can be driven to rotate through the rotating shaft, and at the moment, the rotating food materials can be cleaned. And the sheet-shaped food materials can fall into the cross-shaped overturning box, then the food materials are driven to be overturned, and then the overturned food materials are cleaned. In this way, the food materials do not need to be manually turned over, and the food material cleaning efficiency is improved.

The present invention relates to a high pressure water jet automatic drilling and cutting collaborative system and method for coal seams, and belongs to the field of coal seam gas control. The system comprises a drilling and cutting collaborative control platform, an automatically regulated slotting pump unit and an automatically regulated drill; the drilling and cutting collaborative control platform comprises a coalbed gas geology management system, a decision analysis system, a drilling and cutting collaborative execution system, a monitoring and feedback system, and an information management and evaluation system; construction operation parameter instructions issued by the drilling and cutting collaborative control platform are executed by the automatically regulated slotting pump unit and the automatically regulated drill; coal seam geological information is recorded by the coalbed gas geology management system, and reasonable drilling and cutting construction parameters are analyzed and formulated by the decision analysis system based on the coal seam geological information. Drilling and cutting collaborative construction, on-site operation construction parameter monitoring, and real-time feedback and adjustment are realized by the drilling and cutting collaborative execution system and the monitoring feedback system according to the operation parameter instructions. Coal seam outburst prevention and control effects in a drilling and cutting collaborative implementation area is evaluated by the information management and evaluation system. The present invention improves safety of on-site operators, and reduces personnel input and labor intensity.

The invention provides a pipeline detecting and cleaning robot, which belongs to the technical field of pipeline robots and comprises a main body, a first motor, an image acquisition detector and a cleaning assembly. Two supporting assemblies are arranged on the main body, each supporting assembly comprises a plurality of supporting rods evenly arranged in the circumferential direction of the main body in a surrounding mode, one ends of the supporting rods are connected with the main body, the other ends of the supporting rods are provided with walking wheels, the first motors are arranged on the supporting rods, the main body is driven to move in a pipeline by driving the walking wheels, and the image acquisition detector is arranged at the front end of the main body. The cleaning assembly is arranged at the front end of the main body and comprises a crushing wheel and a high-pressure water spray head, the crushing wheel is driven by a second motor arranged at the front end of the main body and used for crushing garbage, and a high-pressure water spray head pipe is arranged towards the front end of the main body and used for spraying high-pressure water to wash the garbage. The pipeline detecting and cleaning robot provided by the invention can replace manual work to detect and clean the pipeline, so that the safety and the convenience are greatly improved.

The invention discloses a balance-double-rotation-field spray gun, and belongs to the technical field of agricultural water-saving irrigation. The spray gun comprises an outer barrel, a central water supply pipe, a driving rotating shaft, a planetary reducing mechanism, a high-speed backflushing driving arm and a low-speed spraying arm. A fixed inner gear ring is arranged in the outer cylinder body; the central water supply pipe is axially arranged; the driving rotating shaft is rotatably arranged outside the central water supply pipe in a sleeving manner; the input end of the planetary reduction mechanism is in driving connection with the lower end of the driving rotating shaft; the high-speed backflushing driving arm is fixed at the upper end of the driving rotating shaft, is internally provided with a first water distribution cavity communicated with the central water supply pipe, and is provided with at least one pair of driving nozzles capable of spraying reversely; and the low-speed spraying arm is rotatably mounted at the upper end of the central water supply pipe and is in driving connection with the output end of the planetary reducing mechanism. During working, the driving nozzle sprays water flow to generate counter-acting force, the high-speed backflushing driving arm and the driving rotating shaft are driven to rotate at a high speed, and the rotation drives the low-speed spraying arm to rotate at a low speed after being subjected to speed reduction and torque increase through the planetary speed reduction mechanism, so that a differential synergistic double-rotation irrigation field is formed. Unification of long range, high uniformity, self-driving, excellent atomization, high sealing, strong stability and moderate flow is realized.

The utility model provides a water-jet guided laser processing device capable of preventing damage to a wall, which comprises a water-jet guided laser processing head for coupling a laser beam with a water beam and outputting water jet for water-jet guided laser processing; the tool is used for clamping a workpiece to be machined; the quick-change base is connected with the tool, and at least one blocking generator is installed on the quick-change base in the direction facing a workpiece. When water jet is used for layer-by-layer water-guided laser processing and penetrates through the last layer of a processing area to be emitted to an opposite wall, the steady state of the water jet is blocked through a blocking signal emitted by a blocking generator, a steady-state water beam is damaged, and a laser light path is prevented from being transmitted to the opposite wall. Through the design of the water-jet-guided laser machining device, laser residual energy can be effectively attenuated, laser energy is prevented from directly acting on opposite walls in an uncontrolled penetration mode, therefore, the integrity of machined parts is protected, the defect that the opposite walls are damaged in traditional water-jet-guided laser machining is overcome, and high-precision and high-reliability water-jet-guided laser machining is achieved.

Water jet-assisted sludge extraction and conveying device, characterized in that it comprises: an extrusion pump body (1) for supplying the drive for conveying sludge from the tunnel, wherein the extrusion pump body (1) is provided with a first water inlet pipe (2) for sludge supply and a first water outlet pipe (3) for conveying sludge; a return and processing pipeline for assisting the extrusion pump body (1) in suctioning and conveying the sludge, wherein the return and processing pipeline comprises a filter element, an air bag pressurization element and a water jet flushing element, wherein the filter element is configured to separate sludge water from the sludge coming from the extrusion pump body (1) and convey the sludge water to the air bag pressurization element, the air bag pressurization element is configured to pressurize and dilute the sludge water to obtain high-pressure sludge water, and convey the high-pressure sludge water to the water jet flushing element, the water jet flushing element is configured to return the high-pressure sludge water to the sludge in the tunnel; a suction and conveying element for suctioning sludge and conveying sludge to the first water inlet pipe (2); a sand cleaning element which is connected to the air bag pressurization element and is designed to return the high-pressure sludge water in the air bag pressurization element to the first water inlet pipe (2) and thereby flush the first water inlet pipe (2) and the extrusion pump body (1).

A system for selectively opening flexible containers, such as plastic bags, in a mixed solid waste stream is disclosed, for use in Material Recovery Facilities (MRFs) or other contexts. The system may include a conveyor configured to transport waste, a sensor configured to detect the presence and position of flexible containers, and a multi-degree-of-freedom positioning device that moves a cutting tool relative to the containers. A processor, in communication with the sensor and positioning device, may calculate a cutting path and control the positioning device to execute the cutting operation. The system may utilize various cutting tools, including punches, blades, spades, shovels, and motorized saws, as well as non-contact fluid-based cutting technologies such as air or water jets. Additionally, the system can dynamically adjust the cutting trajectory based on real-time feedback and environmental conditions. The method provides an adaptable solution to open bags without damaging recyclable materials, improving throughput and reducing waste in mixed waste streams.

The large stone cutting machine with the adjustable water spraying position comprises a portal frame, a cutting saw blade, a control box, a back plate and a water spraying mechanism, the water spraying mechanism comprises a water conveying pipeline, a spraying head, a bearing plate, a roller, a pull rope, a linear guide rail, an electric rotary table, a magnetic attraction block and a metal block, and stone can be placed below the cutting saw blade to be cut; in the cutting process, the linear guide rail can drive the electric rotary table and the magnetic attraction block to move above the roller, when the magnetic attraction block moves to the position above the metal block, magnetic attraction can be conducted, and after magnetic attraction is completed, the electric rotary table can drive the roller to rotate through the magnetic attraction block and the metal block, so that the pull rope is further wound; and the number of the rollers is two, the position of the water conveying pipeline in the arc-shaped rail groove can be adjusted by controlling the different rollers to rotate, and water sprayed out of the spray heads can conduct targeted cooling and dust falling on different positions of the cutting saw blade.

The utility model relates to the technical field of medical instruments, and particularly discloses a water jet pressurizing device which comprises a pump body, a liquid inlet connector, a liquid outlet connector, a first one-way pre-tightening valve and a second one-way pre-tightening valve. The pump body is provided with a piston cavity, one end of the pump body is provided with a first cavity and a second cavity, a liquid inlet channel is communicated between the first cavity and the piston cavity, and a liquid outlet channel is communicated between the second cavity and the piston cavity; one end of the liquid inlet connector is installed in the first cavity, and a first conical surface is arranged on the inner wall of the end, close to the liquid inlet channel, of the liquid inlet connector. The first one-way pre-tightening valve is arranged between the first conical surface and the pump body; one end of the liquid outlet connector is installed in the second cavity, and a second conical surface is arranged at the end, close to the liquid outlet connector, of the liquid outlet channel. And the second one-way pre-tightening valve piece is arranged between the second conical surface and the liquid outlet connector. According to the secondary emptying device, secondary emptying of the pump body can be effectively achieved, the emptying efficiency is high, and the operation risk and the operation cost are reduced.

The invention discloses an abrasive water jet cleaning device and cleaning method.The abrasive water jet cleaning device comprises a cleaning box body, a spray head cleaning assembly and a conveying roller way, and the spray head cleaning assembly comprises a mounting frame, a mounting block and a spray head; the spray head cleaning assembly located on one surface of the steel plate / belt comprises a pair of installation frames, each installation frame is provided with a plurality of spray heads, the cleaning areas of the spray heads on the two installation frames cover the transverse width of the steel plate / belt after being combined, the spray heads on the two installation frames are obliquely arranged, and the spray heads on the two installation frames are arranged in a staggered mode. And the spraying directions of the sprayers face the two transverse sides of the steel plate / strip respectively. According to the cleaning device and the cleaning method, under the condition that optimal process parameters and spatial arrangement conditions of the spray head are met, extremely high part universality can be achieved, modular disassembly can be carried out, and the equipment site requirement can be reduced.

The invention discloses roller cleaning equipment for an MLCC, and belongs to the technical field of electronic component production equipment. The equipment comprises a feeding mechanism, a conveying mechanism, a cleaning mechanism, a drying mechanism and a discharging area which are sequentially arranged along the technological process. The conveying mechanism is driven by an annular chain, a support assembly of the conveying mechanism is embedded in a sliding groove of an installation base through the two ends of a fixing rod, and operation is stable. The cleaning mechanism and the drying mechanism each comprise an annular collecting pipe driven by a lifting driving assembly, and the annular collecting pipes can be coaxially arranged on the periphery of the roller in a sleeving mode for high-pressure water jet cleaning and high-speed airflow drying. The equipment is further provided with a closed-loop water treatment system, and sewage is recycled after being filtered. The full-process automation and resource circulation of roller cleaning from feeding and discharging, cleaning, drying to water treatment are achieved, the roller cleaning device has the remarkable advantages of being high in efficiency, good in cleanliness, capable of saving water, environmentally friendly and stable and reliable in operation, and the automation level and economic benefits of MLCC production are greatly improved.

The invention relates to a dynamic balance adjusting system for an underwater cleaning robot and a control method of the dynamic balance adjusting system, and the dynamic balance adjusting system comprises an inclination detection module which comprises a plurality of liquid level sensors located on the same transverse plane; the dynamic leveling module comprises a plurality of water spraying pumps which are located on the same transverse plane; the central control unit is electrically connected with the inclination detection module and the dynamic leveling module; the central control unit judges whether the robot body of the cleaning robot inclines or not and judges the position where the robot body inclines on the basis of distance data measured by the liquid level sensors. And when it is judged that the robot body of the cleaning robot tilts, the central control unit controls the water spraying pump located at the tilting position to start water spraying downwards, so that the balance posture of the cleaning robot body is corrected by generating upward water flow thrust. The technical problems that in the prior art, due to inclination or rollover of a robot, the water surface operation efficiency is reduced, and even the robot loses the autonomous working capacity are solved.

The utility model relates to a rectifying tower convenient to clean, which comprises a rectifying tower body, tower plates, a scraping mechanism, a cleaning mechanism and a drainage mechanism are arranged in the rectifying tower body, the tower plates are arranged in the rectifying tower body in an up-and-down crossing manner, and the scraping mechanism is used for scraping the tower plates and the inner wall of the rectifying tower body. The cleaning mechanism is used for washing the tower plates and the inner wall of the rectifying tower body, and the liquid discharging mechanism is arranged at the bottom of the rectifying tower body and used for discharging liquid in the rectifying tower body. According to the rectifying tower, the scraping mechanism is arranged in the rectifying tower body, dirt and impurities attached to the inner wall of the tower and the tower plates can be efficiently scraped, meanwhile, water flow sprayed out of the nozzles of the cleaning mechanism flushes the scraped dirt and takes away the dirt rapidly, dirt accumulation in the tower is avoided, and the scraping and flushing combined mode is adopted, so that the cleaning efficiency of the rectifying tower is improved. And not only are the uniformity and thoroughness of cleaning improved, but also the cleaning time is greatly shortened, and the working efficiency is improved.

The invention discloses a water jet propulsion boat low-speed working condition energy-saving device based on the coanda effect. The water jet propulsion boat low-speed working condition energy-saving device comprises a flow guide plate, a fixed connecting piece and an angle adjusting device. The guide plate is arranged behind a nozzle of the water-jet propeller and is an S-shaped curved surface, the front end is hinged with the fixed connecting piece, and the rear end is hinged with the angle adjusting device; under a low-speed working condition, the guide plate rotates to a folded state, the upper wall surface covers a nozzle of the water-jet propeller and can guide jet flow to flow in a manner of being attached to the guide plate by means of the coanda effect, and the lower wall surface guides circulating vortex in a boat rear wake flow field; under the medium-high speed working condition, the guide plate rotates to a put-down state, the upper wall face is far away from jet flow of the water-jet propeller, and the lower wall face does not generate additional flow field disturbance in the boat body wake flow field. The jet flow of the water-jet propeller and the circulating vortex of the wake flow field of the boat body are guided based on the coanda effect, adverse flow coupling between the jet flow of the water-jet propeller and the circulating vortex is restrained, recycling of effective momentum in the corresponding wake flow field vortex is synchronously improved, and therefore the propelling efficiency of the water-jet propelling boat under the low-speed working condition is improved.

The utility model discloses a liquid level display device and sewage tank. Liquid level display device includes liquid level display subassembly and flushing subassembly, liquid level display subassembly includes liquid level detection subassembly, liquid level display subassembly, and liquid level detection subassembly includes guide rod, the upper support seat and lower support seat of connecting in the both ends of guide rod, the float of sleeve joint on guide rod, liquid level display subassembly installs on the upper support seat to read the liquid level in sewage tank for user, wherein, flushing subassembly includes the upper water jet of setting in the upper support seat one side close to guide rod, the lower water jet of setting in the lower support seat one side close to guide rod. The liquid level display device does not have the problem that self -cleaning function, needs manual liquid level display device to be dismantled and is washed, and washing is inconveniently long and time -consuming.

The utility model provides a water spray disc and a water jet loom, and relates to the technical field of water spray disc, the water spray disc comprises a loom body, a bottom plate and an adjusting device, the surface of the loom body is provided with a plurality of limiting rollers, the surface of the loom body is fixedly connected with a controller, the bottom plate is installed on the surface of the loom body through the adjusting device, and the limiting rollers are arranged on the bottom plate. The surface of the bottom plate is fixedly connected with a lead disc, the surface of the bottom plate is fixedly connected with a nozzle, the surface of the bottom plate is fixedly connected with a water inlet pipe, the water inlet pipe is communicated with the nozzle, the adjusting device comprises two mounting plates, and the two mounting plates are fixedly connected with the surface of the bottom plate respectively; when the water spraying disc is matched with a weaving machine body for use, the angle of the nozzle can be timely and quickly adjusted according to the weaving requirement, so that the water spraying disc is more adaptive to the weaving processing requirement of the weaving machine body, the use effect and the functionality of the water spraying disc are improved, and the working efficiency of weaving is also improved.

This application relates to the field of tarpaulin cleaning technology, disclosing a high-strength self-cleaning sunshade tarpaulin, including a tarpaulin, a cylinder, blades, a hollow shaft, a cross-shaped spray frame, spray pipes, first nozzles, cross-shaped pipes, and valves. In use, the water supply equipment is controlled to operate, and water is delivered through multiple hoses into the interior of multiple cross-shaped pipes, ultimately being sprayed out by multiple spray pipes and multiple first nozzles. When water is sprayed from the multiple first nozzles, fine water streams are evenly sprayed onto the tarpaulin surface, carrying dust from the sides of the tarpaulin to the ground. When water is sprayed from the multiple spray pipes, multiple high-pressure water jets are directed at multiple blades. Then, under the push of the reaction force, the multiple cross-shaped spray frame rotates. This ultimately drives the multiple first nozzles to rotate, thereby increasing the spray range and improving the dust removal effect. Because the multiple nozzles are evenly distributed on the sides of the tarpaulin, it is convenient to clean the entire side when the tarpaulin is unfolded.

The utility model relates to a water flow system for a dish-washing machine and the dish-washing machine, the water flow system comprises a water supply pipe, the water supply pipe is provided with a water outlet; the spraying arm is installed on the water supply pipe, a water inlet communicated with the water outlet is formed in the spraying arm, and a water spraying opening used for spraying out water flow in the spraying arm is further formed in the spraying arm; the interior of the spraying disc is hollow, the spraying disc is installed at the water spraying opening, a water passing opening and a spraying hole which are communicated with the interior of the spraying disc are formed in the spraying disc, and the water passing opening is communicated with the water spraying opening; a plurality of spraying holes are formed in the spraying disc, the water passing area of the water spraying opening is larger than that of each spraying hole, and the spraying disc is detachably connected with the spraying arm through a connecting structure. And the thickness of the sprayed water column is changed.

The application provides a fir-type mortise and tenon joint structure deflection abrasive water jet strengthening method and system. The method uses a deflection abrasive water jet nozzle and a three-sided shielding strengthening tool to strengthen the surface of a workpiece. The system uses the above method. The application can solve the problems of "physical inaccessibility" (cannot enter) and "jet shadow" (cannot be sprayed / angle is not correct) of traditional strengthening tools in the extremely limited space of a fir-type mortise and tenon joint structure (deep groove, multiple teeth, reverse buckle), thereby realizing full coverage and uniform stress distribution of surface strengthening.

The invention discloses a high-pressure water jet ground breaking depth time history prediction method, and aims to solve the problem that the change of the ground breaking depth along with time cannot be accurately reflected in the prior art. The method comprises the following steps: firstly, obtaining corresponding data of ground breaking depth and time under different conditions through a jet flow ground breaking test, and further performing inversion analysis and constructing a dynamic erosion coefficient function changing along with a dimensionless stress ratio; and then the function is embedded into an ordinary differential equation representing ground breaking dynamics, and a prediction model is established. For a new construction scene, on the premise that jet flow working parameters and soil inherent attributes are known, the model is solved through numerical calculation, and a complete prediction curve that the ground breaking depth develops along with time can be simulated. According to the method, field test requirements can be remarkably reduced, a reliable basis is provided for scheme comparison and selection and parameter optimization in the early stage of construction, and accurate prediction of the ground breaking process is achieved.

The utility model relates to the technical field of water-jet looms, in particular to an auxiliary splash-proof water-jet loom which comprises a rack, a water-jet loom body, a water pan and a splash-proof mechanism. A water-jet loom body is mounted on the inner wall of the rack, a water receiving disc is connected to the inner wall, close to the lower portion of the water-jet loom body, of the rack, a splash-proof mechanism is arranged in the water receiving disc, a control cabinet is connected to one side of the rack, and a cloth collecting roller is rotationally connected to the inner wall of the rack through a motor. A shielding mechanism is arranged on the outer side of the cloth collecting roller. According to the water-jet loom capable of assisting in sputtering prevention, dripping water is absorbed through a sponge plate and a sponge belt, splashing caused by the fact that the dripping water touches a hard inner wall is prevented, a driving motor drives the sponge belt to roll, meanwhile, a stepping motor drives a lower pressing roller and an upper pressing roller to rotate together, the water absorbed in the sponge belt is squeezed out, and the water is prevented from splashing. Therefore, the water-jet loom assists in preventing sputtering.

This invention discloses a method for repairing hot corrosion on the blade of a single-crystal gas turbine, comprising a process for removing the hot corrosion layer and a process for spraying a repair coating. In the process of removing the hot corrosion layer, high-pressure water jet is used to locally remove the hot corrosion layer on the blade. In the process of spraying the repair coating, a spray gun is used to spray the coating onto the area on the blade where the hot corrosion layer was removed. During the spraying process, the blade remains stationary while the spray gun moves horizontally. The use of high-pressure water jet technology to locally remove the hot corrosion layer on the surface of the working blade, and the optimized spraying parameters ensure that no damage is caused to the original coating and substrate, while reducing blade repair costs while ensuring thorough coating removal. By improving the spraying method and related parameters of supersonic flame spraying of nickel-cobalt-chromium-aluminum-yttrium-tantalum coatings, the coating thickness in each hot corrosion area can be effectively controlled within the range of 0.02-0.07 mm, while ensuring the antioxidant and corrosion resistance of the repair coating, meeting the blade design requirements, and ensuring that the blade returns to its pre-repair condition.

The utility model discloses a pipeline self-adaptive chain type cutting device, and belongs to the technical field of cutting control. Comprising a hydraulic motor which is connected with a speed reducer and provides power for the speed reducer. The speed reducer is installed on an adjusting plate through a support in the adjusting assembly, a telescopic mold spring is arranged between the adjusting plate and the bottom plate, a pull rod is sleeved with the mold spring, and the upper end and the lower end of the pull rod are connected with the adjusting plate and the bottom plate respectively; trundles are arranged on the lower end face of the bottom plate and placed on the pipeline. An output shaft of the speed reducer is connected with a gear, a chain is mounted on the gear, and the other end of the chain is hooped on the pipeline; a tool bit is installed on the upper end face of the bottom plate through a connecting assembly, and the pipeline can be cut through abrasive water jet. According to the chain type pipeline cutting machine, the mold spring is used, the chain length and the chain tensioning degree actually needed by the chain type pipeline cutting machine are adjusted in a self-adaptive mode according to the pipeline curvature radius and the curved surface flatness condition, and it is guaranteed that the cutting process and quality are safe and reliable under the flammable and explosive dangerous environment condition.

The invention discloses a non-oriented high-silicon steel plate machining method and a non-oriented high-silicon steel plate. The non-oriented high-silicon steel plate machining method comprises the steps that the non-oriented high-silicon steel plate is provided; a laser beam of a laser is guided by water jet, and the non-oriented high-silicon steel plate is cut into a preset size; permanent magnets are symmetrically arranged on the two sides or the rear portion of the laser and used for stabilizing magnetic domains under the action of external magnetic field energy, and the magnetic domains are arranged in the easy magnetization direction. And the cut non-oriented high-silicon steel plate is cooled through water jet, the width of a heat affected zone is reduced, and the machined non-oriented high-silicon steel plate is obtained. According to the method, the high-silicon steel plate with low surface roughness, small residual stress and excellent magnetic performance can be obtained.

The utility model relates to the field of waste gas treatment, concretely is a kind of caustic wash tower convenient to replace solution, including solution replacement box, solution replacement box top inlay has tower body, and tower body is provided with aeration pipe;Tower body bottom four corners are provided with drain hole, and solution replacement box inside is provided with first filter cover, and first filter cover bottom is provided with residue discharge assembly, and tower body top is provided with outlet pipe;Tower body inside is provided with washing tower plate at equal intervals, and tower body is inlaid with annular water jet pipe, and annular water jet pipe bottom is provided with several water jet nozzles;Solution replacement box top is fixedly provided with water suction pump, and water suction pump bottom is set in second filter cover, and second filter cover is set in the inside bottom end of solution replacement box;Water suction pump top is fixedly provided with water supply main pipe, and water supply main pipe is connected with annular water jet pipe by connecting component, and the utility model can effectively facilitate solution replacement treatment to caustic wash tower, so that the waste gas treatment of caustic wash tower can be facilitated.

The invention discloses a pre-welding laser cleaning method for an aluminum alloy overhaul structural part of a railway vehicle. The pre-welding laser cleaning method comprises the following steps: step 1, depainting; step 2, pre-cleaning; step 3, polishing and positioning; the limited position of the to-be-welded area is determined, a laser scanning path is planned, and a laser is started to conduct laser cleaning on the limited position; and 5, evaluating a cleaning result. Attached pollutants can be removed by depainting the aluminum alloy overhaul structural part; a large amount of loose pollutants can be removed through high-pressure water jet, and shielding is avoided; stubborn impurities, surface defects and stress concentration points can be removed through polishing treatment, and the risk that the defects are expanded into larger defects in the later welding process is reduced; by performing laser fine cleaning on the limited position, an oxide film, black ash, coating residues and the like can be removed, the cleaning area can be enlarged, the cleaning effect is further improved, a fusion environment is provided for subsequent welding repair, and therefore the welding quality is improved.

The application discloses a seven-layer gradient function composite repairing construction method for concrete freeze-thaw damage, and the method comprises the following steps: investigating a freeze-thaw damage area, determining damage depth and range, removing all loose, peeled and cracked concrete by using mechanical tools until the base surface is exposed, carrying out rust removal and corrosion prevention treatment on the exposed steel bars, cleaning the interface by using high-pressure water jet, removing dust and debris, and coating, in sequence, a primer, anti-freezing repair mortar, nano-enhanced coating, cement-based anti-freezing, waterproof and corrosion-proof protective coating, alkali-resistant sealing primer and protective coating on the base surface, wherein the protective coating is coated in two layers, the damaged base body is reconstructed in a gradient mode, the structural integrity is restored, a long-acting protection system with the functions of active protection and passive barrier is constructed from inside to outside and with gradient transition of material properties, and the service life of the repaired structure in an extreme environment is significantly prolonged.

This application discloses a method and apparatus for active slag removal in water-guided laser deep hole machining based on pulse-modulated water pressure, relating to the field of water-guided laser machining technology. It includes: setting a base pressure for water-guided laser deep hole machining; applying a periodic modulation signal to a high-pressure water supply system based on the set base pressure, causing the water jet output pressure to periodically pulsate near the base pressure with an initial pulse frequency and modulation amplitude, thereby creating a pumping force for slag removal within the machined hole; during the water-guided laser deep hole machining process, utilizing the high-pressure scouring and low-pressure backflow pumping effect generated by the water jet output pressure to remove accumulated water and molten slag from the bottom of the machined hole; acquiring the current machining depth in real time, and adjusting the pulse frequency of the periodic modulation signal based on a preset mapping relationship between the machining depth and the pulse frequency, so that the pumping effect matches the current hole depth. This solves the problems of existing slag removal methods, such as complex hardware, poor depth adaptability, and limited deep hole machining effects.

The invention discloses a powder spraying line pretreatment multi-process collaborative water-saving spraying structure which comprises a supporting frame, a water collecting tank is arranged in the middle of the lower end of the supporting frame, a horizontal transmission assembly is arranged above the supporting frame, a vertical transmission assembly is arranged between two supporting beams, a first motor is fixedly installed above a first installation plate, and a second motor is fixedly installed above a second installation plate. A rotating shaft of the first motor penetrates through the first mounting plate and is fixedly connected with a rotating disc, a hook is arranged below the rotating disc, a water inlet pipe is fixedly mounted above the baffle through a mounting seat, a plurality of water spraying pipes which are arranged at equal intervals are arranged below the water inlet pipe, and a plurality of high-pressure nozzles which are arranged at equal intervals are arranged on the water spraying pipes. According to the spraying structure, the position of a workpiece is cooperatively adjusted through the horizontal transmission assembly and the vertical transmission assembly, the rotating disc is matched to drive the workpiece to rotate, all-directional uniform spraying is achieved, waste water is recycled through the water collecting tank, secondary utilization is facilitated, the water-saving effect is remarkable, and the pretreatment efficiency and quality are improved.