40results about How to "Precision flushing" patented technology

The invention discloses an apparatus for collecting water and sampling on multiple points as well as an unmanned aerial vehicle sampling system and sampling method, which belongs to the technical field of acquisition of a water sample. The apparatus is provided with parts such as a shell, an upper plate, a bottom plate, a coiled pipe assembly, a position adjusting assembly and a water collection assembly, wherein corresponding parts in the coiled pipe assembly are accurately controlled by virtue of the position adjusting assembly, the flushing process and water injection process of a water pipe can be realized, and the water quality detection process of a sampled water area can be completed by virtue of the water collection assembly, so that the collection of various water samples in various water areas can be accurately and rapidly realized. The multi-point water collection and sampling apparatus has the advantages that the structure is simple and the setting is simpleand convenient;the control method of the unmanned aerial vehicle sampling system carrying the multi-point water collection and sampling apparatus is simple; and the rapid collection of a plurality of water samples in various water areas can be effectively realized, the accuracy of the water sample in the collection process can be ensured, the pollution of the sample and the damage to the part can be reduced, thewater sample collection efficiency is improved, the water quality detection accuracy is improved, the water quality detection cost can be reduced, and the application prospect and application popularization value are relatively good.

The present invention relates to the technical field of medical devices, in particular to a cerumen flusher, which includes a cylinder with a double-layer structure, which includes an outer cylinder and an inner cylinder, and an airtight seal is formed between the outer cylinder and the inner cylinder. The cavity is equipped with a heating device, a temperature sensor and a controller; the two ends of the cylinder are respectively provided with a first opening and a second opening, and both the first opening and the second opening make the inner cavity of the inner cylinder communicate with the outside world. The first opening is connected with a conduit, and one end of the conduit is located outside the cylinder, and is connected with a hose; a piston and a push rod motor are installed in the inner cavity of the inner cylinder, and the piston is slidingly connected with the inner cylinder, and the inner cavity of the inner cylinder is divided into Two chambers that are not connected to each other. The two chambers correspond to the first opening and the second opening one by one. The push rod motor is installed in the chamber where the second opening is located and connected to the piston. The push rod motor drives the piston along the inner cylinder. The wall slides. The invention has a simple, complete and compact structure and can reduce the damage to the external auditory canal.

The invention provides a self-cleaning livestock feeding trough, which includes a protective plate, a sliding frame, a track chain, a water pipe, a power cord, a movable block, a nozzle, an electric motor, a motor runner, a water flow control valve, and an electric motor. Forward and reverse switch, water feeding control valve, settling bucket and filter screen, a water inlet is opened on the front surface of the main body, and the drain pipe is installed on the right end surface of the main body, which is beneficial to the turbid water flow generated by the feeding tank. Precipitation filtration, to avoid large impurities inside the water flow from clogging the pipeline and affecting the cleaning effect. Specifically, when the water flow enters the sedimentation tank, the denser substances inside the water flow fall into the bottom of the sedimentation tank to prevent the external environment from being polluted. The outlet of the sedimentation tank is installed The special filter screen filters the less dense substances in the water flow to avoid pipe blockage.

The invention provides a determination method and a determination instrument for the content of emulsified asphalt of an emulsified asphalt cold-recycling mixture, and belongs to the technical field of determination of engineering materials. The emulsified asphalt cold-recycling mixture is put into a sieve and water is pressurized to be sprayed so that the water is sprayed out in a mist manner; the sprayed water is used for washing the emulsified asphalt cold-recycling mixture on the sieve and the emulsified asphalt in the emulsified asphalt cold-recycling mixture is washed out; then a washed emulsified asphalt mixed solution is collected and is stirred and heated, wherein the heating temperature is not more than 120 DEG C; and finally, the content of the asphalt in evaporated residues of the emulsified asphalt mixed solution is determined to determine the use amount of the emulsified asphalt in an emulsified asphalt cold-recycling process. The reasonable debugging and operation are carried and an asphalt extractor is matched for use so that the content of the emulsified asphalt in the emulsified asphalt cold-recycling mixture can be effectively determined.

The invention relates to an intelligent robot for hoisting and scrubbing a glass curtain wall. The robot comprises a working frame, a second auxiliary lifting device, a lifting hook, a scrubbing execution device and a flushing device, the second auxiliary lifting device is installed at the upper end of the working frame, and the lifting hook is installed at the upper end of the second auxiliary lifting device; the scrubbing execution device and the flushing device are installed in the working frame from front to back in sequence. According to the intelligent robot, the problems can be solved that in the existing process of cleaning the glass curtain wall, manual cleaning operation is conducted with the help of an existing hoisting tool, the life safety of operation personnel is threatened,hidden safety dangers exist, sewage is spattered anywhere in the cleaning process, secondary pollution is caused, the dangerousness of manually scrubbing glass with the help of the hoisting tool is high, workers easily get heatstroke during operation under high-temperature weather, a scrubbing tool needs to be cleaned in time during manual glass scrubbing, the amount of water manually carried inthe high-altitude operation process is limited, and the effect of scrubbing the glass is influenced.

The invention discloses a washing device and method of a vertical anchor chain. The washing device comprises a barrel, washing nozzles, a washing coil pipe and a water injection container. The washingnozzles are installed on the inner wall of the barrel. The washing coil pipe is wound round the periphery of the barrel and connected with the washing nozzles. The water injection container communicates with the washing coil pipe. The invention further discloses the method for washing the vertical anchor chain through the washing device. The washing device is used for washing the anchor chain inthe ship anchor weighing process, corrosion of sludge to the anchor chain is reduced, so that the service life of the anchor chain is prolonged, the washing device can be vertically or obliquely installed in the platform position of an anchor chain structure in a matched mode, washing operation can be achieved rapidly, a washing effect is guaranteed, and the washing device is safe and reliable; and by the adoption of the method for washing the vertical anchor chain through the washing device, the anchor chain is washed conveniently and quickly, and the sludge on the vertical anchor chain can be thoroughly removed.

The invention discloses a smart toilet bowl, comprising a human body measurement module, a human body part recognition module and a flushing control module, wherein the human body measurement module can be used for three-dimensional measurement to parts of the human body sitting in a seat ring of the toilet bowl to acquire body surface three-dimensional point cloud; the human body part recognitionmodule can be used for recognizing different parts of the human body from the body surface three-dimensional point cloud and / or a human body three-dimensional model; the flushing control module can be used for changing position of a flushing sprayer according to spatial position of the parts of the human body so as to flush the parts of the human body needed to be cleaned accurately by a water flow. The invention further discloses a method for cleaning the human body by the toilet bowl, and particularly discloses an embodiment adaptable to a weightless environment. In application of the toilet bowl, the position of the flushing sprayer can be adjusted automatically according to body size and sitting position of a user; further, the toilet bowl can be used in the weightless environment andhelps to reduce difficulty in using the toilet for astronauts.

The invention discloses a water spray blowing type toilet cover on a toilet seat; the toilet cover comprises an upper cover plate, a toilet seat, a water inlet adjusting mechanism, a heater and a water flow tube; the toilet seat has a cavity, and the water inlet adjusting mechanism and the heater are arranged in the cavity; a water inlet tube is arranged on one end of the water inlet adjusting mechanism, and connected with an outer water tube; the water flow tube is arranged on the other end of the water inlet adjusting mechanism, and connected with the heater; the water of the water flow tubeenters the heater and is heated, and then is sprayed out from front and back nozzles on a round wall in the toilet seat; a blower is also arranged in the cavity; an air outlet of the blower is arranged on the outer wall of the toilet seat cavity; the rear nozzle of the toilet cover can eject warm water to wash human body anus, the front nozzle can spray warm water to wash human body private part,the washing are accurate, and cannot wash anus excreta to the private part by mistakes; the air outlet on toilet seat cover can blow hot air so as to dry out residual water on human body parts afterwashing.

The invention relates to a self-regulation flushing and sucking integrated apparatus. The self-regulation flushing and sucking integrated apparatus comprises a three-way pipe, a flushing switch and a sucking switch. The three-way pipe is connected with a flusher pipeline, a sucking apparatus pipeline and a drainage tube, the flushing switch is arranged on the branch, connected with the flusher pipeline, in the three-way pipe, and the sucking switch is arranged on the branch, connected with the sucking apparatus pipeline, in the three-way pipe. According to the self-regulation flushing and sucking integrated apparatus, the flusher pipeline or the sucking apparatus pipeline does not need to be replaced and single pipeline flushing / sucking mode switching can be realized by directly controlling the switches. The self-regulation flushing and sucking integrated apparatus has the advantages that time is saved, the traditional flusher pipeline and the traditional sucking apparatus pipeline are combined with the drainage tube, the purpose that the steps of flushing and sucking are controlled through one pipeline is realized, and precious time is saved for operations; labor is saved, flushing is accurate, the integrated apparatus can be controlled automatically by an operated patient himself / herself; frequent pipeline replacing is avoided and the surgical field is prevented from being shielded.

The invention provides an automatic bottle washer for collected porcelain bottles. The washer comprises a frame body, adjustment electric cylinders, a cleaning plate, a water rushing cone bucket and an air drying plate. the adjustment electric cylinders are connected to the lower sides of two ends of the frame body; the cleaning plate is bolted to a telescopic rod at the lower end of a lifting electric cylinder; a cleaning brush is connected to a cleaning motor in a transmission mode through a gear set inside the cleaning plate; the inner side of the water rushing cone bucket is inlaid with amesh plate, and two sets of circular jet pipes are arranged on the mesh plate; nozzles are uniformly arranged on the jet pipes; the air drying plate is provided with a wind hole in a ring shape structure, and one end of the air drying plate is connected with an air interface; the slide plate is provided with a plurality of sets of porcelain bottle slots in a ring-shaped structure. The adjustment electric cylinders are arranged to facilitate the sliding of the slide plate to the left and right inside the frame body; a cleaning brush is provided to clean the porcelain bottle, so that the impurities on the inner wall of the porcelain bottle are quickly separated from the porcelain bottle; The air drying plate is arranged to rapidly dry the porcelain bottles, which saves time.

The invention discloses a medical experiment dyeing method which comprises the following steps: 1, starting a first suction mechanism to inject first dye liquor into a sample area, standing for a set time, and flushing the sample area to finish dyeing of the first dye liquor; 2, a second dye liquor suction pump is started to inject second dye liquor into the sample area, the sample area is washed after standing is conducted for set time, and dyeing of the second dye liquor is completed; 3, a third dye liquor suction pump is started to inject third dye liquor into the sample area, the color below the sample area is monitored in real time through the camera, the sample area is flushed when the color threshold point number is reached, and dyeing of the third dye liquor is completed; and 4, starting the second suction mechanism to inject fourth dye liquor into the sample area, standing for a set time, flushing the sample area, and completing fourth dye liquor sample injection for microscopic examination. According to the invention, manual operation is replaced by multi-station automatic dyeing liquid filling, so that the dyeing stability, consistency and color recognition accuracy are greatly improved, and dyeing result errors are avoided.

The invention provides a closestool, which can judge the positions of all the parts of the human body, and also can automatically adjust the position of a flushing spray head, so that the corresponding parts of the human body are accurately flushed. The closestool comprises at least one camera, the at least one camera is arranged on an independent camera shooting rod. The at least one camera can shoot the surface image of the lower part of the human body. A human body recognition module can recognize all the parts, positioned in a seat gasket, of the human body according to the image shot by the at least one camera, and also determines the spatial positions of all the parts. A flushing control module can control a flushing execution module to move according to the spatial positions of theparts, positioned in the seat gasket, of the human body, so that flushing water flow can accurately flush the parts, needing to be washed, of the human body.

The invention relates to the technical field of cleaning equipment, in particular to cleaning equipment for electronic electromechanical assembly production. The cleaning equipment comprises a U-shaped frame and a water tank, wherein a clamping assembly is arranged in the U-shaped frame; the clamping assembly comprises two side plates which are distributed at an interval; a driving mechanism is arranged on the side plate on one side; a plurality of clamping mechanisms which are distributed at equal intervals are arranged between the two side plates; each clamping mechanism comprises a first guide rod, a first lead screw and a plurality of clamping units distributed at equal intervals; the driving mechanism comprises a plurality of first gears; reversing transmission gears are arranged between every two adjacent first gears; a first motor base is fixedly mounted on one side plate; a first motor is fixedly mounted on the first motor base; a booster pump is fixedly mounted on the water tank; and the water outlet end of the booster pump is communicated with a nozzle. Workpieces can be clamped between movable plates and fixed plates, and an operator aligns the nozzle with the workpiecesone by one for washing, so that the workpieces cannot move in the washing process.

The invention relates to a building glass curtain wall device, comprising a work frame. A lifting hook is arranged at the upper end of the work frame. Two lifting driven devices are arranged on the outer wall of the work frame. The two lifting driven devices are symmetrically arranged on the left side and the right side of the work frame. A scrubbing executive device and a washing device are sequentially installed in the work frame from front to back. The building glass curtain wall device can solve the problems that in an existing glass curtain wall washing process, a cleanout operation is carried out with manual virtue of an existing lifting tool, the life security of operating personnel is threatened, and a potential safety hazard exists; sewage is trickled down everywhere in a cleanoutprocess to cause secondary pollution; heatstroke is prone to occur in a hot weather operation; manpower glass scrubbing needs to clean a wipe tool in time, water carried by manpower is limited in a high altitude operation, and the effect of glass scrubbing is influenced; manual virtue of the lifting tool is high in labor intensity, poor in stability, high in dangerousness, and low in working efficiency; and the like.

The invention discloses a sea sedge product powder spreading device with a disassembly-free machine cleaning function and a cleaning method thereof. The top end of a conveying belt is fixedly connected to a powder spreading box, seasoning boxes are symmetrically and fixedly mounted at the top end of the inner side of the powder spreading box and correspond to the top of the conveying belt, and a quick cleaning mechanism is arranged at the inclined upper position, corresponding to one side of a powder spreading brush roller, of the inner side of the powder spraying box. According to the invention, high-pressure airflow in an air filling pipe is guided into an air nozzle through an air guide hose, and the airflow is blown to the powder spreading brush roller through the air nozzle. Under theaction of a driving motor and a bidirectional lead screw, a guide block is driven to move along a long groove plate, the air nozzle is driven to move in the axial direction of the powder spreading brush roller, then powder in brush bristle gaps of the powder spreading brush roller is separated from the powder spreading brush roller, the powder in a groove channel in the outer side of a discharging groove roller is swept out through rotation of the powder spreading brush roller, and the discharging groove roller and the powder spreading brush roller are rapidly cleaned without disassembly.

A liquid ejecting apparatus includes a liquid ejecting unit that can eject a first liquid and a second liquid to a medium, a first rotating body having a circumferential surface that can receive the first liquid ejected from the liquid ejecting unit, a first sliding contact member that can be slidably in contact with the circumferential surface of the first rotating body, a first collection unit that collects the first liquid that is collected from the circumferential surface by the first sliding contact member, a second rotating body having a circumferential surface that can receive the second liquid ejected from the liquid ejecting unit, a second sliding contact member that can be slidably in contact with the circumferential surface of the second rotating body, and a second collection unit that collects the second liquid that is collected from the circumferential surface by the second sliding contact member.

The invention discloses a flusher for the medical ophthalmology department. The flusher structurally comprises a base, a waste water tank, a water outlet pipe, a frame, threaded rods, nuts, arc blocks, a lifting flushing device, a water inlet pipe, a flow valve, a head rack, a lifting support and a lifting column. The base is vertically connected with the bottom of the lifting column, the waste water tank is arranged on the side surface of the lifting column and fixed to the base, and the top of the lifting column is fixedly connected with the bottom of the frame; the frame is square, the headrack is arranged in the frame, and the head rack is in an arc shape with two upward ends; the bottom of the head rack is fixed into the frame through the lifting support, the arc blocks are arrangedat the two sides of the head rack, and through holes are formed in the arc blocks. According to the flusher for the medical ophthalmology department, through the lifting flushing device, the height can be adjusted so that the flusher can adapt to different conditions, accurate flushing can be conducted, old people and children use the flusher conveniently, water flows from a water division pipe tothe internal canthi of the eyes of a patient, flows from the internal canthi to the external canthi and then flows into the arc blocks, and the flushing area is large.

The invention relates to intelligent building glass curtain wall hoisting equipment which comprises a work frame. An adjusting lifting air cylinder is mounted at the lower end of the work frame, the top of the adjusting lifting air cylinder is mounted on a first auxiliary lifting device via flanges, a second auxiliary lifting device is mounted at the upper end of the work frame, two lifting drivendevices are arranged on the outer wall of the work frame and are symmetrically positioned on the left side and the right side of the work frame, and a scrubbing executive device and a flushing deviceare sequentially mounted in the work frame from front to rear. The intelligent building glass curtain wall hoisting equipment has the advantage that the difficult problems of threat to the lift safety of operation personnel and potential safety hazards due to the fact that cleaning operation is manually carried out by the aid of existing hoisting tools in existing glass curtain wall cleaning procedures, secondary pollution due to the fact that sewage sprinkles in all places in the cleaning procedures, instable manual operation by the aid of lifting appliances, severe influence of wind speeds,requirements on frequent adjusting and fixing locations in operation procedures, high risks of manual glass scrubbing by the aid of the existing hoisting tools and the like can be solved by the aid of the intelligent building glass curtain wall hoisting equipment.

The invention discloses a layered flushing method for a slurry circulation system of a slurry balance shield machine. The method comprises the following steps that A, an air cushion cabin is circularly washed by adopting muddy water until no muck is screened; B, a cutterhead center flushing pipeline is connected to a mud discharging pipe flow divider, slurry is fed through the cutterhead center flushing pipeline, a mud feeding pipe set I discharges slurry to carry out layered flushing on slag-carried on a muddy water bin till no residue soil exists in the screening process; C, slurry is fed through a cutterhead center flushing pipeline, a mud feeding pipe set II discharges slurry to carry out layered flushing on slag-carried on the muddy water bin till no residue soil exists in the screening process; D, slurry is fed from a main mud discharging pipe set, and the mud feeding pipe set I and the mud feeding pipe set II discharge slurry at the same time to flush and carry residues in the muddy water bin till no residue soil exists in the screening process; and E, slurry is fed through the mud feeding pipe set I and the mud feeding pipe set II at the same time, slurry is discharged from the main mud discharging pipe set, slag is washed and carried in the muddy water bin till no muck exists through screening, and tunneling is recovered. The method has the beneficial effects that the blocking position of the muddy water bin can be accurately flushed, muddy water circulation is recovered, and shield construction is rapidly recovered.

The invention discloses a cable error code eliminating method, system and device. According to the cable error code eliminating method, the position of ink printing on a cable is determined, after precise location is completed, according to the scanning result of a main scanner, a controller controls a spraying head to carry out precise high-pressure spraying according to the position of ink printing on the cable, ink printing on the cable is washed, and the washed cable is scrubbed through a scrubbing structure. The cable error code eliminating method, system and device are combined and usedfor eliminating error ink codes on the cable, labor is replaced, the production efficiency of cables is improved, ink is flushed precisely, ink diluter can be reduced, and environmental protection isbenefitted.

The invention relates to a porcelain body of a double-flushing multifunctional water-saving toilet. An S bent blow-off line used for blocking the odor of a sewer is not arranged. The position of a drain outlet at the bottom is used for installing an odor blocking valve. A traditional water piece comprising a water inlet valve and a flushing valve is not arranged in a water tank. The interior of the water tank is used for installing a flusher and a washer. The lower part of the water tank is used for installing a deodorizer. Drain pipes of sanitary fittings, such as a wash basin and the like, can be led into the toilet. The porcelain body of the double-flushing multifunctional water-saving toilet has eight functions of the toilet, a shower toilet, a bidet, a cleanser, a ventilator, a mop sink, a farting barrel and a defecation instrument. The porcelain body of the double-flushing multifunctional water-saving toilet is capable of achieving the goals of water saving, emission reduction, environmental protection, no blockage, no water leakage, cleanness, no odor, automatic utilization of waste water and no odor when people defecate or fart, is suitable for urban and countryside, and is capable of meeting the requirements of water-saving society and new countryside construction.

The invention relates to the technical field of medical instruments, in particular to a neurosurgery hematocele flushing device which comprises a base and further comprises a supporting assembly and a flushing assembly. The supporting assembly comprises a rotating table, a lifting component, a mounting seat, a rotating rod, a connecting component, a first gear, an adjusting worm and a power part, after the height of the lifting component is adjusted, the motor drives the rotating table to rotate, so that the connecting component faces the operation position, and the remote controller controls the power part to operate, drives the adjusting worm to rotate and drives the first gear to rotate; the rotating rod is driven to rotate, the angle of the connecting component is adjusted, the spray head is driven to be close to the operation position, hematocele is better flushed, the number of rotating turns of the adjusting worm is adjusted by controlling the power piece, the rotating angle of the rotating rod is adjustable, the connecting component drives the spray head to reach the operation position more accurately for flushing, and operation is convenient; and the use effect is better.

The invention discloses a high-pressure water washing system device for an unmanned aerial vehicle. The device comprises a vehicle body; vehicle arms connected to the vehicle body, wherein the vehicle arms are provided with rotor wings; a holder device connected to the bottom of the vehicle body; a spray gun which is connected to the holder device and comprises an extension pipe, wherein the extension pipe extends forwards to the front of the vehicle body; a gun head connected to the front end of the extension tube; and a stable rotor wing connected to the gun head. According to the unmanned aerial vehicle high-pressure water washing system device, the spray gun is connected to the holder device at the bottom of the vehicle body, the extension pipe of the spray gun forwards extends to the front of the vehicle body, the stable rotor wing is installed on the gun head, and the front end of the extension pipe and the gun head are lifted through lifting force generated by rotation of the stable rotor wing; the influence of the weight of the extension pipe and the gun head on the hovering posture of the vehicle body is reduced, it is ensured that the vehicle body is in a stable state, and a high-pressure water column sprayed by the spray gun can accurately flush an insulator to wait for cleaning. The device can be applied to the field of unmanned aerial vehicles.

The invention discloses a precise flushing squatting pan for a plateau train, which comprises a squatting pan, an image recognition and control module, a flushing device and a roller guide rail integrated device.According to the precise flushing squatting pan for the plateau train, the position of excrement can be precisely determined through an intelligent image recognition system, the excrement is precisely flushed by controlling the angle of each flushing head, and the flushing efficiency is improved. The flushing effect is good.

The invention provides a forced-rinsing cooling mechanism of a multi-sheet combined stone sawing machine. The forced-rinsing cooling mechanism comprises a multi-sheet combined stone saw. The forced-rinsing cooling mechanism is characterized by comprising a booster pump and an electric switch valve connected with the booster pump, the electric switch valve is sequentially connected with a water pressure gauge and a diversion water tank through a high-pressure pipe, the electric switch valve is connected with a transverse water spray pipe through the high-pressure pipe, a ball valve is installed on the portion, between the electric switch valve and the transverse water spray pipe, of the high-pressure pipe, a ball valve is installed on the portion, between the electric switch valve and the water pressure gauge, of the high-pressure pipe, the ball valves are used for adjusting the on-off and the flow of water, the diversion water tank is provided with a connector, the connector is connected with one end of the high-pressure pipe, and the other end of the high-pressure pipe is connected with an adjustable spray head through a connector on a water shield. Compared with the prior art, the forced-rinsing cooling mechanism of the multi-sheet combined stone sawing machine has the advantages that a disk saw can be rinsed and cooled sufficiently, deformation of the disk saw can be effectively reduced, the service life of the disk saw is prolonged, usage cost is reduced, and the quality of a stone slab obtained through cutting is improved.

A full-automatic intensive cooling single-arm multi-stone machining combined circular sawing machine comprises an automatic tool feeding and retracting hydraulic mechanism and a displacement feeding mechanism, wherein the displacement feeding mechanism can automatically adjust the positions of stones so as to achieve continuous stone cutting without halt. The combined circular sawing machine is characterized in that an intensive cooling flushing mechanism is provided with a booster pump, the booster pump is connected with a water pressure gauge through one high pressure pipe and connected with a transverse spray pipe through the other high pressure pipe, ball valves are arranged on the high pressure pipe between the booster pump and the transverse spray pipe and the high pressure pipe between the booster pump and the water pressure gauge, the ball valves are used for adjusting connection and disconnection and the quantity of water, a connector is arranged on a flow diversion water tank, nozzles are connected to the connector, and the water outlet of each nozzle is right opposite to the portion between two circular saw bodies. Under the effect of high pressure water, the device can make a tool of a combined circular saw fully cooled, residual stone ballasts between tool teeth and two blades are flushed away, deformation of the tool is reduced, the service life of the tool is prolonged, and the energy-saving effect is good.

The invention provides an oral irrigator structure and a design method of a water outlet hole in the oral irrigator structure, the oral irrigator structure comprises a lower shell with a water inlet channel and an upper shell covering the lower shell, a sliding piece capable of sliding in the length direction is arranged between the upper shell and the lower shell, an insert is arranged at the front end of the upper shell, and a water outlet hole is formed in the insert. Water outlet holes are densely distributed in the insert, a hole sealing pad with hollowed-out holes is arranged at the front end of the sliding piece, the hollowed-out holes correspond to the water outlet holes, and the hollowed-out holes are communicated with the water outlet holes, so that high-pressure water entering the water inlet channel is sprayed out after passing through the hollowed-out holes and the water outlet holes. By moving the sliding piece to different positions, the water outlet of the spray head can have three states: single-water-column water outlet, small-amount-water-column water outlet, multi-water-column water outlet and the like; by means of the structure, different water outlet states of the spray head are achieved, and different use requirements are met.