2844 results about "Water jet" patented technology

The present invention belongs to the field of water-jet guided laser micro-hole machining. Specifically, provided is a machining apparatus for a water-jet guided laser micro-hole with a high surface quality, the apparatus comprising: a nanosecond laser device, which is turned on on the basis of a control instruction of a machining control system and refracts an incident laser into a laser water-jet coupling head by means of an optical path transmission unit; a CCD camera, which is arranged above the optical path transmission unit, wherein the laser enters a detection optical path by means of the optical path transmission unit and images on the CCD camera, so as to detect the position of a laser spot diameter at a nozzle of the laser water-jet coupling head in real time, and to complete the coupling of the laser and a water jet; and the laser water-jet coupling head, which is used for coupling the laser, which is focused in the coupling head, and a high-pressure water flow, which enters a coupling cavity through a pipe of a water cavity sidewall, at small holes of the nozzle, so as to perform micro-hole machining on a workpiece. By means of the present invention, interference with a stable jet is reduced, and a micro-hole with a high roundness, a low taper and a good outlet / inlet morphology can be machined, thereby improving the machining efficiency, while also ensuring the precision and quality of micro-hole machining.

The invention belongs to the technical field of underground engineering, and provides a slurry shield tunneling machine carrying a high-pressure jet system and a working method thereof.The slurry shield tunneling machine comprises a cutterhead mechanism, a slurry supply mechanism and a high-pressure jet mechanism, and the slurry supply mechanism and the high-pressure jet mechanism are arranged on the cutterhead mechanism through a rotation center; the high-pressure water supply assembly comprises a first water supply pipe and a second water supply pipe which are connected through a pipeline dynamic and static conversion end. The grinding material supply assembly comprises a first supply pipe connected with the fixed end and a second supply pipe connected with the rotating end; the second water supply pipe and the second material supply pipe are jointly connected with a spray head, the spray head is arranged on the cutter head mechanism, in the soft soil layer construction process, when the cutter head mechanism suddenly encounters hard substances such as stones, high-pressure water and abrasive materials are provided for the spray head through the second water supply pipe and the second material supply pipe, and the hard substances such as the stones are cut in a water jet mode; abrasion and damage to the hob are reduced, and construction efficiency and safety are guaranteed.

The invention relates to equipment and a method for water-guided laser collaborative forcible entry of a reinforced concrete pile head based on artificial intelligence recognition, and belongs to the technical field of forcible entry equipment. Comprising a mobile chassis; the rack is mounted on the movable chassis; the water jet system is mounted on the rack and is provided with a first working part; the mechanical drill bit system is mounted on the rack and is provided with a second working part; the identifying and positioning module is used for collecting real-time data of a three-dimensional structure, steel bar distribution and a forcible entry area of the pile head; and the control unit is in communication connection with the identifying and positioning module, the water jet system and the mechanical drill bit system, and the control unit receives data of the identifying and positioning module to generate a forcible entry strategy and a mechanical drill bit path plan so as to guide the first working part and the second working part to cooperatively work. The technical problems that in the prior art, impact force of water jet forcible entry is limited, and the forcible entry efficiency of a hard core layer and a complex forcible entry environment is not high are solved.

The invention belongs to the technical field of viaduct renewal, and discloses water jet forcible entry equipment and a forcible entry method.The equipment comprises a main body structure, an auxiliary supporting structure, a spray head structure and a control structure, the main body structure is movably arranged on the road surface, and the auxiliary supporting structure is arranged on the side, away from an anti-collision wall, of the main body structure; the supporting rods are driven to rotate through stretching and retracting of the linear driving mechanism, so that the auxiliary supporting wheels abut against the ground, anti-toppling supporting force is provided for the main body structure, the situation that the equipment topples due to the counter-acting force of water flow is avoided, the stability of the whole equipment in the moving process is ensured, and the operation danger is reduced. The spray head structure comprises a mounting base and a spray head, the mounting base is movably arranged at the end of the main body structure, and the spray head is rotatably arranged on the mounting base so as to achieve multi-angle forcible entry of the anti-collision wall. The control structure is arranged on the main body structure and can control movement of the main body structure, movement of the mounting base and rotation, start and stop of the spray head, and intelligent operation is achieved.

The invention relates to a horizontal well jet flow axial slotting pressure relief coal and coal bed gas co-mining method. The method comprises the steps of horizontal well building, axial continuous hydraulic slotting, coal bed drainage pressure relief and coal and coal bed gas co-mining. The axial continuous hydraulic slotting comprises the steps that a casing pipe is put into a horizontal well; a plurality of slots are formed in the sleeve, and a directional structure is arranged in the sleeve; the water jet tool pipe column is tripped into the casing pipe, and the lateral nozzle is kept to move directionally along the directional structure; when the lateral nozzle is aligned with the foremost slot, high-pressure water sprayed by the lateral nozzle penetrates through the foremost slot to impact the coal seam, and high-pressure water sprayed by the axial nozzle pushes the oil pipe to retreat; when coal seam slotting at each slot is completed, water injection is stopped, and the oil pipe is pulled backwards; when the lateral nozzle is aligned with the next slot, the high-pressure water sprayed out of the lateral nozzle penetrates through the next slot to impact the coal seam, and the high-pressure water sprayed out of the axial nozzle still pushes the oil pipe to retreat; and the steps are repeated till coal seam slotting at the last seam groove is completed.

The invention relates to the technical field of machine tool control, in particular to an electrolysis arc milling composite numerical control machine tool control method and system for case machining. The method comprises the steps that firstly, an electrolyte supply system, an electric arc generation system, a high-pressure water jet system and an ultrasonic vibration system are started in sequence, operation data are obtained, and rough machining parameters are calculated; in the rough machining process, the machining gap, the discharging state and the temperature are monitored in real time and compared with standard parameters, and correction values are calculated; after rough machining is completed and the electrolytic arc milling device is detached, the feeding speed and the spindle rotating speed are adjusted according to the correction value, and finish machining parameters are obtained; by electrolyzing electric arc corrosion materials and combining the synergistic effect of high-pressure water jet and ultrasonic vibration, efficient removal and accurate control of super-difficult-to-machine materials such as titanium alloy and high-temperature-resistant alloy in the machining process are achieved, and the machining efficiency and quality are improved.

The invention belongs to the technical field of laser processing, and particularly relates to a matrix type ultrasonic-assisted liquid guide laser processing system and method.The matrix type ultrasonic-assisted liquid guide laser processing method comprises the steps that a laser module receives a control instruction of an upper computer, outputs a laser beam and focuses the laser beam into a coupling water cavity module; the coupling water cavity module couples an incident laser beam with a water jet in the cavity, and forms a high-pressure water jet to guide the laser to act on the surface of a workpiece; the ultrasonic vibration module is used for forming ultrasonic vibration on the workpiece; the pressure-stabilizing high-pressure water module supplies water to the coupling water cavity module; the CCD machine vision monitoring module collects the position of a light spot focus of the laser beam and sends the position to the upper computer, and the upper computer adjusts the laser module in real time according to the real-time position of the light spot focus and the position of a nozzle of the coupling water cavity module. The influence of high-power ultrasonic vibration on the workpiece clamping stability can be reduced, and therefore high-quality and high-efficiency machining of large-depth-diameter-ratio micropores and surface fine structures of large thin-wall workpieces is achieved.

The invention relates to the technical field of concrete structure construction, and discloses a super-long concrete post-cast strip structure and a manufacturing method.The structure comprises an interface treatment layer, a fiber grid layer, a micro-expansion concrete layer and a steel fiber protection layer which are sequentially arranged from bottom to top, and the interface treatment layer is used for providing combination transition of new concrete and old concrete; the fiber grid layer is used for achieving deformation constraint and stress transfer, the micro-expansion concrete layer is used for forming an autonomous compensation deformation area, and the steel fiber protection layer is used for providing final structure protection and load distribution. The interface treatment layer is a concrete base surface treated by high-pressure water jet, and is coated with a silane-based interface treatment agent. The bonding strength of new concrete and old concrete is enhanced through the interface treatment layer, the fiber grid layer provides effective deformation constraint, the micro-expansion layer achieves automatic shrinkage compensation, the steel fiber layer controls crack development, the layers are matched with one another to form a complete anti-crack system, the problem that the anti-crack performance of a traditional post-cast strip is insufficient is solved, and the overall anti-crack performance is improved.

The invention discloses a method and a system for deeply cutting hard and brittle materials by butting optical fibers under the assistance of paraxial water beams. Comprising a laser focusing module, an optical fiber butt joint coupling module, a paraxial water beam cooling module, a liquid supply module and an outer frame. In the laser focusing module, laser output from a laser device determines the light beam position through the upper end of a focusing cylinder, and then is coupled into a double-end optical fiber through a lens in the focusing cylinder. In the optical fiber butt joint coupling module, laser energy transmitted by a double-end optical fiber is in butt joint with a lower end plug-in optical fiber through an optical fiber butt joint coupler. In the paraxial water beam cooling module, gas and cooling water are coupled through a customized nozzle, and then water jet with a certain pressure and angle acts on a kerf, so that a heat affected zone is reduced, and waste chip discharge is assisted. The liquid supply module provides gas and liquid required by cooling in real time through a sensor. According to the invention, an optical fiber straight-leading deep processing mode is adopted, and when large-depth processing is carried out, the optical fiber can continuously go deep into a small area to complete high-quality processing under the assistance of a paraxial water beam.

The invention relates to the technical field of water jet looms, and discloses a drying structure for a water jet loom, comprising: a waste water tank, a triangular mesh plate and a drying box, wherein a triangular mesh plate is arranged on the top of the waste water tank, an electric heating roller is arranged on the top of the triangular mesh plate, fixed frames are fixed to the outer walls of both sides of the triangular mesh plate, U-shaped brackets are arranged at both ends of the fixed frame, a fixed guide column is arranged in the middle of the U-shaped bracket, a slider is arranged on the outer side of the fixed guide column, and a spring is arranged at the bottom of the slider. The entire drying structure of the invention ensures the rapid discharge of squeezed water through the inclined design of the squeeze roller and the triangular mesh plate, and the blowing of the wind knife can further discharge the squeezed water, and at the same time, the hot air in the drying box is led out through the air outlet pipe to preheat the cloth to be dried, which can save energy and improve the energy saving performance of the entire drying structure for the water jet loom.

The underwater cleaning robot for the net cage and the netting comprises a robot central frame, a thrust propeller, a side thrust propeller, crawler wheels, an underwater camera, a tensioning wheel and a water jet cleaning mechanism, the water jet cleaning mechanism comprises a cleaning disc, an adjuster machine body, a water inlet pipe, a water spraying pipe and a petal-shaped cavitation spray head, and the underwater camera collects netting shaking data; after compensation thrust is calculated through feedback, a thrust propeller provides compensation force to counteract shaking of the netting, a tensioning wheel can tension the netting, the robot can be more effectively attached to the net face, in the walking process of the robot, an external high-pressure pump can pump high-pressure water into a regulator machine body through a water inlet pipe, and therefore the net face can be more effectively attached to the net face. The jet flow is sprayed out through the water spraying pipe and the petal-shaped cavitation nozzles to clean the netting, the petal-shaped cavitation nozzles on the two sides incline towards different sides, the sprayed petal-shaped cavitation fluid can drive the regulator body to rotate, rotary cleaning is achieved, and the cleaning area range and cleanliness of the jet flow are improved.

The invention relates to a device for preparing rubber powder by adopting a high-pressure water jet composite method, which comprises a high-pressure water generating system, a multi-nozzle cutting head, a rotary crushing cylinder assembly, a rotary filtering cylinder assembly, a liquid collecting cylinder, a fixed seat and a base, the fixed seat comprises an upper mounting plate, a lower mounting plate and a stand column connected between the upper mounting plate and the lower mounting plate, the multi-nozzle cutting head and the rotary crushing cylinder assembly are mounted on the upper mounting plate, the rotary filtering cylinder assembly is mounted on the lower mounting plate, the liquid collecting cylinder is mounted on the stand column, and the high-pressure water generating system is communicated with the multi-nozzle cutting head. And the rotary crushing cylinder assembly comprises a crushing cylinder and a crushing rotating device. High-pressure water jet and mechanical smashing are efficiently combined, a double smashing mechanism of non-contact cutting and mechanical shearing is achieved, the production requirement of fine rubber powder is met, layered multi-nozzle covering cutting of the multi-nozzle cutting head is achieved, and energy consumption is remarkably reduced.

The invention discloses a new-configuration cross-medium aircraft based on blade tip jet rotors and a working method thereof, the aircraft has an air flight mode, an underwater navigation mode and a cross-medium mode, and comprises a fuselage; the main rotor system comprises an electric centrifugal compressor which is arranged on the fuselage in a jacking manner and a blade tip air injection main rotor blade which is connected with an air path of the electric centrifugal compressor; the auxiliary lift system comprises lift units arranged on the fuselage in a distributed mode, and the lift units can be independently controlled; in the air flight mode, the propeller tip jets air, the main rotor rotates, and the auxiliary lift system works to realize air flight; and in the underwater navigation mode, the blade tip jets air, the main rotor stops rotating, the blades on the single side are overturned around the fixed axis till the blade nozzles face the advancing rear portion, and the underwater water jet propulsion device is formed. The novel-configuration cross-medium aircraft disclosed by the invention adopts a distributed lift force layout, has relatively large take-off weight and good maneuverability, can realize continuous medium crossing, and is small in water entering and exiting impact.

The invention discloses a method for calculating carbon emission of a trailing suction dredger. The method comprises the steps that S1, the shaft power of a dredge pump is calculated; s2, calculating the shaft power of the high-pressure flushing pump; s3, calculating the main propulsion power of the trailing suction dredger; s4, drag head resistance power is calculated; step S5, forming a ship total power calculation model according to the power calculation results of the step S1 to the step S4, inputting a construction state, process parameters, a construction section and construction time, calculating the instantaneous total power of the ship, and further calculating carbon emission; s6, integrating the calculation model, and calculating the carbon emission of the construction period; s7, the construction periods of different construction sections of the channel are measured and calculated; and S8, arranging different ships for construction in different construction sections according to the calculated construction periods of the different construction sections, and calculating the comprehensive total carbon emission of the fleet in the different construction sections. The dredging efficiency is greatly improved, the energy consumption is reduced, and the carbon emission is reduced.

The invention belongs to the field of laser cleaning, and particularly relates to a high-pressure water jet target rust layer nondestructive laser cleaning method which comprises the following steps: placing a target to be cleaned on a working plane; opening a laser, enabling the laser to emit light at set power, and enabling the laser to be focused on a window lens at the top of the deionized water device through a focusing lens in sequence and to enter a cavity of the deionized water device; water is sprayed to the surface, on the working plane, of the target material to be cleaned through a water spray head of a deionized water device and coincides with the laser beam, so that deionized water jet flow is formed; laser cleaning: laser process parameters of a laser are set, an included angle is formed between the normal of the to-be-cleaned target and a laser beam emitted by the laser, and the laser is set to clean the surface of the to-be-cleaned target for set times; detecting assistants on the surface of the target material after laser cleaning, and cleaning again if residual particulate pollutants exceed a set value; on the contrary, the laser cleaning target material is qualified, and a new to-be-cleaned target material is replaced.

The present invention provides a method for designing an abrasive water jet-disc cutter combined rock-breaking cutter head, a system therefor, a cutter head and a tunnel boring machine (TBM), wherein the key technology of designing the abrasive water jet-disc cutter combined rock-breaking cutter head of the TBM are provided from the aspects of determining a combined rock-breaking combination mode, configuration of cutter operation parameters and optimization of the combined cutter head; the performance of the abrasive water jet-disc cutter combined rock-breaking cutter head manufactured according to the optimized layout parameters is improved; and a new idea is provided for the development and application of a full-section rock tunneling machine in the field of underground engineering.

The non-pipe-end blind area flaw detection method comprises the following steps that (1) a plurality of jet flow coupling ultrasonic detection units are installed on a jet flow detection coupling water circulation cavity in the circumferential direction, the jet flow detection coupling water circulation cavity is of a cylindrical structure, the central angles between the detection units are the same, and the jet flow coupling ultrasonic detection units are arranged on the jet flow detection coupling water circulation cavity in the circumferential direction; the plurality of grooves are arranged at equal intervals in the axial direction of the cavity; each detection unit is an ultrasonic detection channel; (2) the composite pipe is coupled with a water circulation cavity through jet flow detection, the height of the cavity is adjusted, and the axis of the cavity and the axis of the composite pipe coincide and coincide; (3) starting a water coupling circulating system, driving the composite pipe to sequentially penetrate through the adjacent detection units at a constant speed, and enabling dynamic water jet coupling ultrasonic waves to enter a pipe body of the composite pipe for imaging detection until the composite pipe completely penetrates through the detection units; 4) enabling the position information of each point of the composite pipe to be in one-to-one correspondence with the sound wave signal of the corresponding position point, and storing; and identifying and judging the unqualified composite pipe according to the detection result.

The invention provides an intelligent cleaning unmanned aerial vehicle system and method based on high-pressure water jet, and relates to the technical field of unmanned aerial vehicles. The optimized path acquisition module utilizes a sensor to optimize obstacle avoidance to obtain a new path; the real-time positioning acquisition module realizes positioning by means of PTK; the cleaning area determination module determines a cleaning range according to the positioning acquisition image; and the water flow cleaning execution module starts equipment and adjusts a nozzle to complete high-pressure water jet cleaning. The technical problems that a traditional high-altitude cleaning mode is high in safety risk, low in cleaning efficiency, inaccurate in environment perception and insufficient in dynamic adaptability are solved, and safe unmanned cleaning, path optimization precision and cleaning efficiency maximization of high-rise building glass curtain wall cleaning are achieved; and therefore, the technical effects of operation reliability and intelligent level in a complex environment can be obviously improved.

The invention discloses a deflection composite cavitation nozzle for water jet surface treatment, and relates to the technical field of cavitation jet nozzles and jet surface treatment.The deflection composite cavitation nozzle comprises a nozzle inner pipe, a nozzle outer pipe and a deflection piece, the nozzle outer pipe is arranged outside the nozzle inner pipe in a sleeving mode, and a common flow cavity is formed between the nozzle outer pipe and the nozzle inner pipe; an inner cavity of the nozzle inner pipe is a high-pressure water flow channel, a high-pressure water flow inlet is formed in one end of the high-pressure water flow channel, the other end of the high-pressure water flow channel is blocked by a deflection piece, and a scaling outlet is formed in the position, close to the deflection piece, of the high-pressure water flow channel in the radial direction and communicated with the co-flow cavity. A high-pressure water and low-pressure water co-flow area is formed in the space between the scaling outlet and the outer nozzle outlet, and a low-pressure water flow inlet communicated with the co-flow cavity is formed in the side wall, away from the outer nozzle outlet, of the nozzle outer pipe. The cavitation rate can be greatly improved, the cavitation effect is better, and the treatment effect of cavitation jet flow is improved.

The invention discloses a slurry shield cutterhead nozzle arrangement method and system, and relates to the technical field of tunnel engineering and shield tunneling machines. The method comprises the steps that the total flow of nozzles and the number of the nozzles are determined, and the sediment critical starting flow speed is calculated; obtaining a flow velocity-target distance formula according to a water jet theoretical formula, boundary value conditions and a momentum flux conservation theorem; according to the total flow of the nozzles, the number of the nozzles, the sediment critical starting flow speed and the flow speed-target distance formula, the nozzle arrangement target distance is obtained; and arranging the nozzles according to the nozzle arrangement target distance. According to the method, the arrangement target distance of the nozzles of the slurry shield cutter head is integrally and effectively designed in combination with the water jet theory and the sediment starting mechanism.

The utility model relates to a water-guided laser coupling device which comprises a laser source (1) and a coupling cavity (2), the laser source (1) is configured to generate laser (10) extending along a preset direction (x), and the coupling cavity (2) comprises an optical window mirror (21) arranged on a propagation path of the laser (10) for the laser (10) to pass through; the high-pressure water cavity (22) is formed in the side, away from the laser source (1), of the optical window mirror (21) in the preset direction (x), and the high-pressure water cavity (22) is configured to form a water jet (220) extending in the preset direction (x); the shielding gas generating mechanism (23) is arranged on the side, away from the laser source (1), of the high-pressure water cavity (22) in the preset direction (x) and is configured to generate layered spiral gas flow (230), the layered spiral gas flow (230) comprises first spiral gas flow (231) and second spiral gas flow (232), and the first spiral gas flow (231) is located on the radial inner side of the second spiral gas flow (232).

The invention provides a medical water jet scalpel instrument and a medical water jet scalpel system. The medical water jet scalpel instrument comprises an outer tube, a spray tube and a driving device. The outer tube comprises a first tube body extending in the first direction and a first far-end portion provided with a first far-side tube opening end face, and the first far-side tube opening end face is obliquely arranged relative to the first direction. The spray pipe extends and penetrates into the outer pipe, medical liquid is input into the near end of the spray pipe, a gap is formed between the outer wall of the spray pipe and the inner wall of the outer pipe, a spray hole is formed in the far end of the spray pipe, and the medical liquid is sprayed in the second direction inclined to the first direction. The driving device is connected with at least part of the spray pipe and drives the spray pipe to move. The axis of the outer tube body and the tube opening of the outer tube body are inclined, and the outer tube and / or the inner tube are ingeniously designed, so that the medical liquid is sprayed in the other direction inclined to the direction of the outer tube body, the operation of an operator can be more flexible in an open operation mode or an endoscope operation mode, the clinical function requirement is met, and the operation efficiency is improved. And great advantages are achieved in the aspects of matching performance, machinability and assembling performance.

The invention provides a water-guided laser water-light coaxial coupling device and method which are applied to the technical field of laser processing, and the method comprises the steps: analyzing and determining the relative position of the center of a focusing light spot and the center of a water jet nozzle based on a first image, collected by a CCD camera, of the focusing light spot generated near the opening of the water jet nozzle, and then automatically determining swing parameters of coaxially aligning the focusing light spot and the water jet nozzle to the X axis and / or the Y axis of the laser light path two-dimensional swing mirror, and controlling the X axis and / or the Y axis of the laser light path two-dimensional swing mirror to swing through a two-dimensional swing mirror control device according to the determined swing parameters. Therefore, the center of the focusing light spot and the center of the water jet nozzle are adjusted to coincide, water-light coaxial automatic adjustment of the water-guided laser is achieved, the adjustment efficiency is improved, and the accuracy is high.

The invention provides a water jet combined drilling device and a method thereof.The device comprises a combined drilling tool, a drilling machine body, a pneumatic spiral sand supply system, a low-pressure water supply unit and a high-pressure jet water power unit, the drilling machine body is provided with the combined drilling tool and a pipeline for high-pressure water and abrasive materials to pass through inside a drilling rod, and the low-pressure water passes through the outer side of a drilling bit; the high-pressure water pipeline channel is connected with the high-pressure jet water power unit through a swivel joint; the low-pressure water channel is connected with a low-pressure water supply unit through a swivel joint; the mixed abrasive medium channel is connected with the pneumatic spiral sand supply system through a swivel joint; the pneumatic spiral sand supply system specifically comprises a pressurizing device, a sand tank and a spiral stirring device, the spiral stirring device is arranged in the sand tank, grinding materials in the pneumatic spiral sand supply system are evenly stirred through the spiral stirring device, then the airtight gas tank is pressurized, the grinding materials flow out through the bottom and flow to a jet flow nozzle through a pipeline to be jetted out, the pressure of a supply pipeline is increased, and the grinding materials are evenly stirred. And grinding materials are uniformly mixed, and the cutting effect is improved.

The present invention relates to the field of packaged food processing, and discloses a packaging bag washing machine, comprising a washing tank, a water inlet pipe and a water outlet pipe are provided on the washing tank, a conveying mesh belt is arranged in the washing tank, a plurality of water spray pipes are connected to the washing tank, a plurality of nozzles are arranged at the bottom of the water spray pipes, and a jet pipe and an air bag located below the conveying mesh belt are connected in the washing tank. The present invention has the following advantages and effects: clean water is injected into the washing tank, and the clean water covers the air bag, and an air pump sends air into the air bag before the jet pipe, so that the water level is quickly raised, and water resources are saved at the same time; the bagged food floating above the liquid level is picked up by rotating the toggle wheel, so as to remove the unqualified products.

The invention provides a high-speed submerging jet flow and mechanical shock synergistic ice damage test method. The method comprises the following test steps: S1, arranging a data acquisition system; s2, initializing working conditions; s3, preparing an ice body sample; s4, prefabricating ice body damage by high-pressure water jet; s5, a servo electric cylinder drives a mechanical structure to impact ice damage; s6, data acquisition; and S7, data processing. According to the invention, the force sensor, the laser displacement sensor and the high-speed camera synchronously collect the load, deformation and image information of ice damage caused by impact of a mechanical structure by means of the servo electric cylinder under the jet-assisted effect, so that accurate control and synchronous measurement of submerged jet and mechanical cooperative damage are realized; the impact of different mechanical structures at different speeds on the ice damage load is avoided.

A self-cleaning method of a washing machine comprises the steps that after each washing procedure is finished, a system automatically detects the real-time humidity and the residual dirt concentration of an inner container of the washing machine, if the humidity is higher than a preset threshold value and the dirt concentration exceeds a datum line, an ultraviolet disinfection process is automatically triggered, UV-C lamp tubes installed on the top and the side wall of the inner container are started for irradiation sterilization, and the ultraviolet disinfection process is stopped; the duration time is 10-30 minutes, the built-in water flow nozzle module is activated in a set period or when a high dirt accumulation level is detected according to dynamic adjustment of the environment temperature and humidity and the use frequency, and the wall face of the inner container, the door seal ring and the drainage pipeline are flushed in all directions through high-pressure pulse water flow. According to the invention, the fundamental conversion from passive response to active prevention is realized, the equipment can perceive the environmental state of the inner container in real time by integrating a multi-dimensional sensor network and an AI prediction model, trend pre-judgment is carried out based on big data of user use habits, water quality conditions and washing modes, and a cleaning program is started when pollution does not appear so as to nip in the bud.

The invention relates to a method for preparing rubber powder by adopting a high-pressure water jet composite method. The method comprises the following preparation steps: S1, crushing rubber particles; s2, performing impact type filtration; s3, internal circulation of the rubber powder liquid; and S4, solid-phase separation and recovery. The cavitation effect and the high-speed impact effect in ultrahigh-pressure water jet can enable a rubber material to achieve the low-temperature crushing effect at the normal temperature, so that the purpose of preparing fine rubber powder can be achieved at the normal temperature in a low-energy-consumption, low-cost and environment-friendly manner; meanwhile, the actual filtering area of the filter cartridge is increased to the maximum extent, and the filtering effect and efficiency are improved to a great extent.

The utility model provides a high-pressure water jet concrete scabbling device. The high-pressure water jet concrete scabbling device comprises a mounting frame; the high-pressure water conveying unit comprises a high-pressure pump arranged on the mounting frame, a water storage tank and a waterway plate located at the bottom of the mounting frame, the waterway plate is provided with a water inlet and a plurality of nozzles communicated with the water inlet, the water storage tank is connected with the high-pressure pump through a high-pressure pipe, and the high-pressure pump is connected with the water inlet of the waterway plate through another high-pressure pipe; the installation frame is provided with a supporting frame, the telescopic rod is arranged on the supporting frame in a sliding mode, the waterway plate is rotationally arranged at the end of the telescopic rod, and an adjusting piece connected with the waterway plate is arranged at the end of the telescopic rod. According to the scheme, manual holding for chiseling is not needed, impact generated by chiseling is prevented from hurting a human body, a large amount of dust can be prevented from being generated during chiseling, the nozzles can be used for chiseling roadsides, pier columns, the bottoms, the side faces and the inclined faces of grooves, the use range of the scheme is widened, the applicability is improved, and the production efficiency is improved. And the device can be used in each construction site.