118results about How to "Will not affect the line of sight" patented technology

The invention relates to a playing device for vehicle-carried rear-projection image advertisements, and consists of a bearing vehicle, a rear-projection screen, a flexible projection black box and a projector. The invention is characterized in that the rear-projection screen, and the projector are arranged atop the bearing vehicle and the flexible projection black box, which can be folded at will, is arranged between the rear-projection screen and the projector. When advertisements are played, the rear-projection screen is changed from a horizontal position to a vertical position, the projector extends outward and the flexible projection black box ejects up from the base automatically to form a projection darkroom safe from external rays and guarantee the broadcasting effect of rear-projection image advertisements. The device for rear-projection image advertisements is arranged atop a vehicle, on one hand, the room inside the vehicle is saved, the advertisement-dedicated vehicle is provided with the function of a commercial vehicle and the cost for advertisement broadcasting is lowered; on the other hand, the position of the rear-projection screen is heightened, which is more convenient for displaying and watching. In addition, the device adopts a light van as the bearing vehicle, which is not prone to traffic restrictions, and is convenient for carrying out advertisement services.

The invention discloses a device and a method for controlling a headlamp, and relates to the technical field of vehicles. The device and the method can reduce influence of headlights on full beam on vehicles running in an opposite direction, and ensure driving safety of the driver of a vehicle. The device for controlling a headlamp comprises: firstly, an information acquisition portion obtaining current position information and running speed of a vehicle through a navigation system, and obtaining current position information and running speed of an opposite vehicle through a communication system, then a meeting time calculation portion calculating meeting starting time and meeting end time of the vehicle and the opposite vehicle, and finally, a road condition determination portion determining whether a meeting road segment has a central isolation belt, when the road condition determination portion determines that any position of the meeting road segment is provided with the central isolation belt, a headlamp control portion illuminating a front road surface through the headlights on full beam in the meeting road segment. The method and the device are suitable to control the headlamps to illuminate through the headlights on full beam or dipped headlights.

The invention relates to a self-cleaning observation window device comprising a housing with two end openings, observation window glass, a rotary drive mechanism, and a cleaning brush mechanism. One end opening of the housing is fixed to an article to be observed. The observation window glass is mounted at the other end opening of the housing. The fixed end of the rotary drive mechanism is fixed outside the housing; the moving end of the rotary drive mechanism is fixedly connected with the observation window glass; the rotary drive mechanism drives the observation window glass to rotary around a center shaft in the housing. The cleaning brush mechanism is fixed inside the housing and contacts with the inner surface of the observation window glass. The self-cleaning observation window device has the advantages that the rotary drive mechanism drives the observation window glass to rotate just after the housing is mounted on an opening of the article to be observed, the observation window glass is cleaned by the cleaning brush mechanism meanwhile, cleanliness of the observation window glass is ensured, no influence is generated upon interior temperature and vacuum degree of the article to be observed, and the self-cleaning observation window device is more widely applicable.

The invention discloses an automobile intelligent anti-dazzling method and system. According to the system, differential control over light entering the eyes of a driver in different directions is performed, and the vision of the driver is not affected by opposite sudden hard light. The system obtains an existing hard light source and adjusts the light transmitting rate of the part corresponding to a windshield, and the sight line of the driver is not affected by the existing hard light source; meanwhile, according to the system, an existing detected object is used for predicting a light source which may emit hard light, the position of the possible light source at the next moment is predicted, preventative adjustment is performed, and therefore sudden hard light possibly appearing at theopposite side cannot affect the sight line of the driver.

The invention discloses a blackened polyester (PET) film. The blackened PET film is characterized in that: a blackened layer is coated on one surface of the PET film, and the blackened PET film can be used as a single-sided perspective patch and also can be used as a projection curtain, wherein shadow-free glue is coated on the white surface of the single-sided perspective patch, advertising pictures can be stuck on glass indoors so as to reduce construction difficulty and risk, and the single-sided perspective patch does not affect the indoor sight through a through hole; and when the single-sided blackened PET film is used as the projection curtain, because the blackened surface has no projection, the pictures can be clearer.

The invention discloses a 3D printing protective device for severe craniocerebral injury skull removal. The device comprises a cap body and a titanium alloy net cover, a gap is formed in the right side wall of the cap body, the outer portion of the right side of the cap body is hinged with an arc transparent cover plate matched with the gap through a pin roll, and a first rubber block, a second rubber block with an inserting hole formed in the inside and a third rubber block with an inserting hole formed in the inside are fixedly installed at the bottom of the inner top wall of the cap body. According to the device, the sight of a patient cannot be influenced, it can be avoided that strong wind blows inside the cap body, and the severe craniocerebral injury skull removal condition of a patient is worsened, it is effectively avoided that the wound of the patient suffering from the severe craniocerebral injury skull removal is touched, the patient suffering from the severe craniocerebralinjury skull removal can wear the device stably on the head, air inside the cap body can be exchanged through venting holes, better protective effects of the device are achieved on patients sufferingfrom the severe craniocerebral injury skull removal, and the device is worthy of promotion and popularization.

The invention discloses a power generation billboard which can be lifted and lowered. The billboard comprises a storage battery base, a fixing tube, a rotating tube and a lifting tube. The fixing tubeis installed on the ground, the rotating tube is inserted and rotated in the fixing tube, the lifting tube is inserted and vertically slidably arranged in the rotating tube, the inner side wall of the fixing tube is provided with a plurality of evenly distributed closed coils, the center of the bottom surface of the rotating tube is fixed to a central rotating shaft, the upper and lower ends of the central rotating shaft are respectively provided with a positive magnet and a negative magnet, a pair of advertising plates are arranged on both sides of the lifting tube, and the advertising plates are provided with retractable and rotatable solar panels. The billboard has the advantages that the billboard can not only use solar energy to generate electricity and store electric energy during the day, but also use wind for rotating power generation when the wind is present at night, can provide a large amount of electric energy for surrounding infrastructures, be easy to lift, easily adjustthe height, can adapt to changes in surrounding buildings, do not affect the view sight of the billboard, and be high in flexibility.

The invention discloses a protective bag used in a severe environment. Protective clothing and a protective hood which are worn in a matched mode are included. The protective hood comprises an integrally-formed hood, a face mask and a neck connecting portion connected to a bottom of the hood. The neck connecting portion is connected with the protective clothing to form a completely sealed head wearing space. The hood is connected with an oxygen system. A camera system and a voice system are arranged on the face mask. The face mask comprises an eye visual window and a nose and mouth space whichare matched with a face of a human body, a silica gel isolation strip is arranged between the nose and mouth space and the eye visual window, the silica gel isolation strip is arranged on a nose bridge of the human body and is matched with the shape of the nose bridge, and the silica gel isolation strip divides the eye visual window and the nose and mouth space into two relatively isolated spaces. By using the protective bag used in the severe environment, a problem that in the prior art, after rescue and epidemic prevention workers wear isolation equipment, sights are blocked due to an influence of exhaled carbon dioxide and moisture is solved.

A protecting (or welding) face shield without generation of fog features that it has an internal mouth-nose mask and the air outlets in the front of mouth-nose mask and under it for exhausting the CO2 expirated by the mask.

The invention discloses a vaginal dilator for gynaecology and obstetrics. The vaginal dilator comprises an upper expansion plate, a lower expansion plate, expansion pieces, rotating rods and sealing covers, wherein the upper expansion plate and the lower expansion plate are both designed to be arc-shaped and are oppositely arranged; the upper expansion plate is connected with the lower expansion plate through the expansion pieces; the bottom parts of the expansion pieces are positioned in the lower expansion plate; circular holes are arranged on the lower expansion plate; the rotating rods areconnected with the lower expansion plate through the circular holes; each rotating rod is connected with an expansion piece; an interlayer is respectively arranged in the upper expansion plate and the lower expansion plate; one end of each interlayer is in closed design, while the other end of each interlayer is in opened design; the sealing covers are respectively and fixedly arranged on the upper expansion plate and the lower expansion plate through screws; each interlayer is blocked through a sealing cover; a water inlet is welded on each sealing cover; and a plug is arranged at the position of each water inlet in a threaded connection manner. The vaginal dilator provided by the invention is reasonable in design; and the upper expansion plate and the lower expansion plate are opened byutilizing the expansion pieces to facilitate observation.

The invention discloses a forklift protection device. The forklift protection device comprises a ceiling assembly and an upright post assembly, wherein the ceiling assembly is arranged above a cab ofa forklift, the upright post assembly is connected with the ceiling assembly and is used for supporting the ceiling assembly, and a gap is formed between the ceiling assembly and glass arranged on thetop of the cab. According to the forklift protection device, the gap is kept between the ceiling assembly and the top glass of the cab, and by adopting the design of the gap, falling objects directlyfall on the ceiling assembly and cannot fall on the top surface of the cab, so that a driver in the cab cannot be directly hurt, and the protective effect on the forklift driver is increased; in addition, a certain distance is formed between the ceiling assembly and the top glass of the cab, so that a sufficient light source is guaranteed, the light transmission is good, the light source can directly enter the cab through the gap, and the sight of the driver cannot be influenced. The invention further provides a forklift.

The invention discloses an embedded type OBU (On Board Unit) module and automobile equipment. The embedded type OBU module comprises a module main body and a locking device, wherein the module main body is provided with a built-in OBU, and a locking groove and a sliding groove are formed in the module main body; the locking device comprises a sliding block, a movable buckle and an elastic piece; the sliding block is arranged in the locking groove in a sliding way; the movable buckle is arranged in the sliding groove in a sliding way, and the sliding direction of the movable buckle is vertical to that of the sliding block; the connecting end of the movable buckle is connected to the sliding block through a linkage structure. The automobile equipment comprises an equipment body and the embedded type OBU module, wherein the embedded type OBU module is detachably arranged in a containing groove in the equipment body through the locking device. According to the embedded type OBU module and the automobile equipment, simultaneous movement between the sliding block and the movable buckle is realized through the linkage structure; the movable buckle is enabled to move telescopically in the sliding groove by moving the sliding block, so that the installing and the taking-out of the module main body in the containing groove can be realized, and the operation is simple and convenient; the embedded type OBU module can be embedded in the automobile equipment, thus the reliability is strong, the appearance is simple, and the sight of a driver cannot be affected.

The invention discloses protective clothing integrated with a protective mask, goggles and a mask and a thermoplastic process, relates to the technical field of medical protection, and aims to solve the problems that existing clothing is inconvenient to wear and take off, the taking off procedure is tedious, the whole clothing is poor in gas permeability and strong in muggy feeling, the goggles are easily atomized so the sight is affected, the isolation effects are not ideal and cutting marks on the face are generated. According to the invention, the protective clothing comprises a space capsule, trouser legs, a hood, goggles and a mask body which are integrally arranged, the mask body is integrally arranged on the front surface of the hood, an identity identification mechanism is arrangedon the front surface of the space capsule, and zippers are arranged on the front surfaces of the space capsule, the trouser legs and the hood. The protective property and air permeability of the protective clothing are improved, the protective clothing has a cool touch sense, the space capsule waist inner side windproof skirt with the antibacterial and peculiar smell preventing functions and theintegrated anti-fog goggles with the interiors capable of wearing conventional myopic glasses are additionally arranged, and the sight of medical staff cannot be affected; an identity signboard is added, so that medical staff can conveniently and quickly identify the identity.

The invention relates to a single-tube type concrete spray device capable of preventing rebound. The device is characterized by comprising a high-pressure air nozzle assembly, a concrete spray gun andan air spray device, wherein the high-pressure air nozzle assembly comprise an end plate, an air spray tube outer tube, an air spray tube inner tube and a flared port; a concrete spray gun insertionhole is formed in the center of the end plate, and a plurality of air inlets are also formed in the end plate; one end of the air spray tube outer tube is connected with an outer ring of the end plate, the other end is connected with the end with smaller diameter of the flared port, and one end of the air spray tube inner tube is connected with an inner ring of the end plate; the concrete spray gun penetrates the concrete spray gun insertion hole and is fixed with the end plate; the air spray device comprises air inlet pipes with the same number as air inlet ports, and the ends of the air inlet pipes are fixed at the corresponding air inlet ports. The device can stop rebound of concrete, avoid material waste, and can also flatten, extrude and vibrate the concrete already attached to surrounding rocks, so that the contact between the concrete and the surrounding rocks is firmer, and cavities and gaps cannot be generated in the concrete.

The invention discloses a special casting quenching device for agricultural machines. The special casting quenching device comprises a quenching pool, wherein a first water pipe is communicated with the bottom part of the left side of the quenching pool; one end of the first water pipe, which is separated from the quenching pool, is communicated with a high-pressure pump; a second water pipe is communicated with the top part of the high-pressure pump. The special casting quenching device disclosed by the invention has the beneficial effects that by arrangement and matched use of a suctioning fan, a gas collecting hood, a connecting pipe, a purifying tank, a blowing fan, an air outlet hood, a zeolite molecular sieve plate and an active-carbon absorbing plate, the problem of no waste-gas treatment of the existing special casting quenching device for the agricultural machines is solved; the special casting quenching device for the agricultural machines has the advantage of waste-gas treating capability; in the use process, the sight line of workers can not be influenced, the workers can observe the condition of casting quenching, the quality of the casting quenching is improved, toxicgases also can be prevented from influencing the body health of the workers, and meanwhile the air pollution also can be avoided, so that the special casting quenching device is worthy of being promoted for use.

A method for separating face from outer harmful gas comprises that (1), setting a separating space at the face, (2) forming a wind curtain at the separating space to insulate outer harmful gas from face. And the device comprises a helm covering the head with an opening at the front of the face, a bar wind outlet downward at the top side of the opening, and a wind channel in the interlayer of the helm and communicated with the wind outlet, while the wind channel via a tube is communicated with a pressure source outside the helm. The invention uses the wind curtain to insulate face from harmful gas outside, to insulate harmful gas from breath system, without affecting vision and view sight.

The invention discloses a chip anti-splash device for a milling machine, which is installed on the milling machine. The milling machine is equipped with a main shaft and a workbench. The anti-splash device includes a beam installed above the main shaft, an air channel arranged in the beam, and A plurality of nozzles installed vertically under the air channel; the beam is a cantilever structure, and the nozzles are installed along the side of the beam away from the main shaft; transparent cutting baffles are arranged on both sides of the workbench, and the transparent cutting baffle The top of the plate is in contact with the beam. In the present invention, nozzles are installed at one end of the beam of the machine tool and transparent cutting baffles are installed on both sides of the workbench, relying on the pressurized air flow ejected from the nozzles and the transparent cutting baffles to form a "U"-shaped anti-cutting and splashing area to seal the working area of ​​the machine tool , to avoid the chips splashing to the outside of the machine tool, causing hidden dangers of safety accidents, and the air wall and transparent cutting baffle will not affect the operator's sight, reducing the impact on processing after adding this device.

The invention belongs to the field of an electronic reader and discloses an electronic reader with an illumination device. The electronic reader with the illumination device comprises a reader body and the illumination device, wherein the reader body is also provided with a display screen, the illumination device comprises a pair of support arm rods, a lamp frame and a luminous unit, the upper ends of the support arm rods are respectively hinged at two ends of the lamp frame through a rotating shaft I, the lower ends of the support arm rods are respectively hinged at two opposite side surfaces of the reader body through a rotating shaft II, the luminous unit is arranged on the lamp frame, the support arm rods rotate relative to the reader body through the rotating shaft II, and the lamp frame rotates relative to the support arm rods through the rotating shaft I. When the electronic reader with the illumination device is used, the support arm rods are turned in a direction towards the display screen to be positioned above the display screen, the lamp frame is rotated, and the illumination angle can be regulated through the rotating shafts arranged on the lamp frame. When the electronic reader is folded, the support arm rods and the lamp frame are respectively outwards turned so that the support arm rods and the lamp frame are positioned at one side of the reader body, and the storage and the carrying are convenient. When an illumination switch is switched on at the time, the illumination can be provided for external environment, the lamp frame is rotated, and the illumination angle can be regulated.

The invention discloses an electromobile windshield with a hat. The electromobile windshield includes a front wind-shielding piece, a left wind-shielding piece, a right wind-shielding piece, an upperwind-shielding piece, gloves, a neck sleeve and the hat; the front wind-shielding piece is fixedly provided with the two gloves fixed on handles of an electromobile, the gloves are in an L shape, theleft side of the front wind-shielding piece is provided with the left wind-shielding piece, the right side of the front wind-shielding piece is provided with the right wind-shielding piece, the upperportion of the front wind-shielding piece is fixedly provided with the neck sleeve with which the neck is sleeved, and the upper portion of the neck sleeve is fixedly provided with the hat. The hat isarranged as one part of the windshield, so that the windshield has the function of shielding wind for the head, and meanwhile the arrangement of the hat makes the upper wind-shielding piece effectively cover the arms and block wind blown to the arms and the chest.

The invention discloses a preparation method of an infrared laser protective film. The preparation method comprises the following steps: (1) coating an adhesive on a substrate layer to form an adhesive layer; (2) uniformly mixing antimony oxide, indium oxide and carbon nanotubes according to a mass ratio of 1:1:1, dispersing the mixture into a polyethylene glycol terephthalate material to obtain amaster batch, and extruding the master batch onto the first adhesive layer through an extruder with a grating type die head to form an infrared laser grating treatment layer with grating intervals; (3) arranging a protective layer on the infrared laser grating processing layer; and (4) coating the protective layer with an adhesive to form a mounting adhesive layer, and then adhering a release layer to the mounting adhesive layer to obtain the infrared laser protective film. The preparation method is simple, and the prepared product can effectively prevent information leakage.

The invention provides a pipe path installing rack assembly which is applied to the pipe path layout of a portal of a fork lift, enables the whole field of view of the portal to be free of influence and makes the pipe path layout simple. The pipe path installing rack assembly comprises a front installing plate and a rear installing plate which are arranged symmetrically; the front installing plate and the rear installing plate are a certain distance away from each other; pipe wheel structures penetrate the space between the front installing plate and the rear installing plate in a connected manner; the pipe wheel structures are arranged into three rows from top to bottom on the front installing plate and the rear installing plate; the pipe wheel structures in the same row and the adjacent pipe wheel structures in the same rows define an upper pipe path and a lower pipe path; high pressure hoses pass through the upper pipe path and the lower pipe path.

The invention relates to a pulse concrete-high pressure air combined sprayer and a concrete spraying method. The pulse concrete-high pressure air combined sprayer is characterized by comprising a pulse control system, a concrete gun, a high pressure air injection system and a high pressure air nozzle, wherein the high pressure air nozzle comprises a bell mouth and an end plate which are in weldedconnection, a concrete gun insert hole is formed in the center of the end plate, and air inlets are formed in the periphery of the concrete gun insert hole; the concrete gun is communicated with the concrete gun insert hole and equipped with a concrete pump and a concrete valve which are in communication connection with the pulse control system; the high pressure air injection system is communicated with the air inlets and equipped with an air compression pump and a high pressure air valve which are in communication connection with the pulse control system. Through the adoption of the structure, concrete rebound can be blocked, material waste is avoided, the concrete attached to surrounding rock can be flattened, extruded and vibrated to make contact with the surrounding rock more firmly,and cavities and gaps in the concrete can be avoided.

An automobile rearview mirror of an optimized structure comprises a shell and a lens of the automobile rearview mirror. An annular boss is formed on the inner wall of the shell. The lens is fixed to the front end face of the boss. The front end face of the lens abuts against an n-shaped blocking bar which is fixed to the inner wall of the shell. A frame body extending forwards is formed on the front end face, around the lens, of the shell. A strip-shaped water leakage groove is formed in the lower bottom face of the portion, on the front side of the boss, of frame body. A plurality of air curtain air channels and water blowing air channels are formed in the portion, above the lens, of the frame body and in the shell, and the air curtain air channels and the water blowing air channels are evenly distributed in the frame body and the shell in a staggered mode. The structure of the rearview mirror is rectified, the structure of the rearview mirror can form air curtains and water blowing structures through external air force, and therefore rainwater can be blocked for the automobile rearview mirror, dust or spray on the surface of the rearview mirror can be blown away, and meanwhile, the front side of the rearview mirror is not blocked by a support, so that the line of sight of the rearview mirror will not be affected.

The invention relates to a technical improvement type medical protective garment which comprises a protective garment body, the protective garment body comprises a head sleeve part, a neck part, an upper garment, lower trousers, shoe sleeve parts and sleeves, the head sleeve part, the neck part, the upper garment, the lower trousers, the shoe sleeve parts and the sleeves are formed by sewing in sequence, the head sleeve part is provided with a ventilation assembly, and the ventilation assembly is provided with a ventilation hole. The side wall of the jacket can be separated from the back of a medical worker through the air bag ribs, so that the medical worker can wear the protective clothing for a long time in summer, the situation that the sweat back makes contact with the side wall of the jacket and feels uncomfortable is avoided, and when the medical worker needs to sit on a chair for a rest, the medical worker can support the chair seat with the two hands and upwarp the front ends of the feet, and then the medical worker can sit on the chair. When the medical worker sits on the chair, the first air bag in the middle of the foot is separated from the ground, so that air in the air bag ribs is removed, the air bag ribs are shrunken, and then the medical worker sits on the chair, so that the back of the medical worker clings to the chair, and the medical worker sits more comfortably.

The invention discloses a shape memory alloy fire hydrant protection fence. The shape memory alloy fire hydrant protection fence comprises a plurality of protection pipes, wherein four protection pipes form a rectangular closed ring support. A heating device is arranged on the rectangular closed ring support and connected to a power source through a circuit. The lower portions of four corners of the rectangular closed ring support are connected with the protection pipes respectively, and the lower ends of the protection pipes are fixed to the ground through iron plates; the innermost layer ofeach protection pipe is a shape memory alloy tube, and the exterior of each shape memory alloy tube is a reinforcing layer, the exterior of each reinforcing layer is a heat preservation layer or a heat insulation layer, the exterior of each heat preservation layer or each heat insulation layer is provided with a stainless steel layer, and the exterior of each stainless steel layer is coated with apaint layer. The shape memory alloy tubes can be heated, and the protection fence damaged by mechanical impact, rain water impact, earthquake damage and other factors is repaired. The raw materials used are cheap, the mechanical property is good, heat processing is easy, phase change hysteresis is wide, and the thermal conductivity is great.

The invention discloses multifunctional engineering illumination equipment. The equipment comprises a lamp rod, a top lamp, a ground lamp, an alarming device and an electric box, the top lamp is arranged on the top of the lamp rod, the ground lamp is located below the lamp rod and surrounds the outer periphery of the lamp rod in a ring shape, the alarming device is located in the center of the lamp rod, the electric box is located on one side of the lamp rod, a solar panel is arranged on the upper surface of the electric box, the interior of the electric box is provided with a storage box, a timing device and a positioning device. According to the equipment, illumination is provided by two lamps of the upper and lower lamps, visual sight is not affected at night to ensure the road condition, and alarming can be performed directly through an alarming device on a street lamp under emergency condition, which is more convenient.

The invention discloses a special pile inverting frame for a trolley. The special pile inverting frame for the trolley comprises a base, a pile inverting arm, a pile holding arm group, a locking device, a first hinging point and a pile inverting collecting and pushing device; and the pile holding arm group comprises two pile holding arms. The pile inverting collecting and pushing device comprisesa pile inverting oil cylinder, a second hinging point and a third hinging point. The cross section of the pile inverting arm is in an L shape in one direction. The special pile inverting frame for thetrolley is in an arm surrounding shape; the height of the pile inverting arm is as same as that of a working platform on the trolley in a fixed state; and compared with an original jacking frame, thespecial pile inverting frame for the trolley has the advantages of short climbing distance, low height and high safety performance. Holes do not need to be formed in a steel pile and the pile inverting frame so that the rigidity of the steel pile and the rigidity of the pile inverting frame can be guaranteed. Meanwhile, the special pile inverting frame for the trolley can be of inverted type andcan be inverted while not in use without affecting the vision of a sailor during the sailing of a hull; and therefore, the safety performance is high, the practicability is high, the operation is simple and convenient, a lot of labor is saved by using a mechanical principle, and the working efficiency of the hull is enhanced.

The invention discloses vehicle glass cleaning water. The vehicle glass cleaning water is prepared from the following raw materials in parts by weight: 92-97 parts of pure water, 2-5 parts of a water softening agent, 1-3 parts of a nonionic surfactant, 0.5-1.5 parts of an anionic surfactant, 0.01-0.03 part of coconut oil and 0.5-1.5 parts of alcohol. Compared with the prior art, the vehicle glass cleaning water has the advantages that the vehicle glass cleaning water is relatively high in dirt removal speed, good in sprayability, capable of preventing adhesion of dirt, environmentally friendly and harmless to windshield wipers and spray heads; after being rapidly cleaned in a driving process, the windshield is bright and clean and can be rapidly dried, so that the eyesight of a driver is not influenced; water drops are not condensed on the windshield wiped by virtue of the vehicle glass cleaning water in the rainy day.