143results about How to "Fast drainage" patented technology

The invention discloses a preparation method of nylon fibers. The preparation method comprises the following steps: directly spinning after taking raw materials containing 1,5-pentamethylene diamine and adipic acid to react. The invention further provides the nylon fibers prepared by the method. The method adopts a manner of combining nylon polymerization and fusion direct spinning to prepare nylon 56 wires so that the production cost is reduced, the waste gas is reduced and the pollution to the environment is reduced. The high-performance nylon fibers prepared by the method can be further used for preparing textile materials including yarns, woven fabrics, knitted fabrics or non-woven fabrics, can be widely applied to the fields of clothing material industries, decoration carpets and the like, and has a wide industrial application prospect.

The invention discloses a medical percutaneous transhepatic biliary drainage device for a general surgery department. The device comprises a base, a workbench and a waste liquid collection tank positioned on one side of the workbench are fixedly mounted at the top of the base, a supporting plate fixedly mounted on one side of the workbench is arranged above the waste liquid collection tank, and apiston is movably arranged in a piston barrel which is fixedly mounted at the top of the supporting plate. The medical percutaneous transhepatic biliary drainage device is integrally simple in structure, convenient to use and capable of quickly draining hydrops at an affected part of a patient, drainage efficiency is improved, medical workers do not need to ceaselessly operate a suction device forsucking hydrops, and accordingly workload of the medical workers is relieved; by a sewage pump, convenience in liquid discharge is achieved; due to a great damping effect of the sewage pump in operation, noise pollution caused by vibration is abated, and physical and mental health of people is benefited.

The invention discloses an ecological restoration method for tailing depot reclamation after tailing depot closure. According to the ecological restoration method, a water storage system, a water drainage system and an irrigation system are designed; construction restoration measures adopted by each system accord with environmentally friendly ecological restoration; an interrelated overall system can be formed through the water storage system, the water drainage system and the irrigation system; much water can be impounded in dry seasons so as to be used for irrigation, and floodwaters can be rapidly drained in flooding in rainy seasons, and therefore, the safety of a tailing depot can be ensured, and gravity irrigation can be realized; and regulation can be performed according to the needs of crops, water level in the tailing depot, and weather conditions. The ecological restoration method of the invention can be applied to reclamation ecological restoration and effective utilization of tailing depots after tailing depot closure in various kinds of mines.

The invention discloses an elevated-road rainwater recovery system and a construction method thereof. The elevated-road rainwater recovery system comprises short drainage pipes, drainage pipes, suspension pipes, stand pipes and rainwater recovery boxes; the short drainage pipes are located in retaining walls which are vertically connected on two top sides of an elevated bridge, top ends of the drainage pipes are fixedly connected with the short drainage pipes through pipe joint parts, the two neighboring suspension pipes are connected through a horizontal pipe, the rainwater recovery boxes are connected with rotary nozzles through water pipes which are connected to bottoms of the rainwater recover boxes, and a water suction pump is arranged on each water pipe. The construction method includes: arrangement of the short drainage pipes, construction of pipe connection, construction of rainwater recovery boxes, construction of rotary nozzles and trial operation of the rainwater recovery system. Rainwater accumulation on the elevated road is reduced, occurrence of rear-end collision due to slipping of wheels of vehicles is decreased, construction can be performed directly on existing elevated roads, rainwater on the elevated road can be effectively recycled, water resources are saved, and meanwhile, security of the elevated road is improved.

The invention provides a method and a device for preventing interior of a disengager from coking by quickly extracting oil gas from the fluidized catalytic cracking disengager of petroleum, wherein the device comprises a primary cyclone separator, a straight connection component which is arranged on the tail end of exit tube of the primary cyclone separator, a top cyclone separator, an oil gas drainage tube, an inertial separation component which is on the lower end of inlet of the drainage tube, a stripping section, an anti-coking steam ring and a disengager. The oil gas and the steam within the disengager are discharged out from the oil gas drainage tube only, the lower end of opening of the oil gas drainage tube is equipped with the inertial separation component so as to reduce the catalyst which is entered into the oil gas drainage tube by splashing while discharging from the dipleg of the primary cyclone separator and the dipleg of the top cyclone separator, the exit tube of the primary cyclone separator is tangentially connected to the oil gas drainage tube by means of the straight connection component, and a rotational flow is formed on the upper section of the oil gas drainage tube, so that a vortex low-pressure region is formed and the drainage draft of the oil gas is increased. The method and the device for inhibiting coking of residue fluid catalytic disengager provided by the invention have the advantages that the structure is simple and compact, the fast and efficient separation between the oil gas and the catalyst is ensured, the oil gas within the space of the disengager is extracted quickly, the retention period of the oil gas within the disengager is reduced greatly, the coking phenomenon within the disengager is inhibited effectively and therefore the operation cycle of the catalytic device is prolonged.

The invention discloses a device for removing heavy metals in soil. The device comprises a capillary through drainage belt buried at the bottom of a contaminated soil layer, a water collecting pipe which is communicated with the capillary through drainage belt, a heavy metal adsorption device connected with the outlet of the water collecting pipe, and a peristaltic pump connected with the water outlet of the heavy metal adsorption device, wherein the peristaltic pump is used for sending eluents back to the contaminated soil layer through a water inlet pipe, the capillary through drainage belt is provided with multiple capillary aqueducts which are arranged at intervals and have big insides and small outsides, and the capillary aqueducts are communicated with the water collecting pipe. A method for removing the heavy metals in the soil comprises the following steps: arranging the capillary through drainage belt at the bottom of heavy metal contaminated soil, rapidly discharging the eluents by the capillary through drainage belt, then discharging water of the eluents containing the heavy metals and reusing in the soil after being subjected to adsorption treatment, leaching the soil again, repeating and recycling for several times and then discharging the eluents. The device and the method for removing the heavy metals in the soil realize rapid separation of the eluents and the soil, improve the removal efficiency of the heavy metals and have a high drainage rate, high efficiency and low probability of blockage.

The invention relates to medical human body wound drainage consumables and provides a three-cavity negative-pressure wound irrigation and drainage tube. The negative-pressure wound irrigation and drainage tube comprises an in-vivo drainage tube and an in-vitro connection tube, wherein the in-vivo drainage tube adopts an integral structure and is provided with a main drainage tube, an irrigation tube and a guide wire implanting tube which are parallelly arranged lengthways; the main drainage tube is arranged in the geometric center of the in-vivo drainage tube, and the irrigation tube and the guide wire implanting tube are located at the periphery of the main drainage tube; a lower groove is formed in the outer wall of the in-vivo drainage tube, and a plurality of drainage openings are formed in the lower groove and communicated with the main drainage tube; the in-vitro connection tube comprises an in-vitro drainage tube, an in-vitro irrigation tube and an in-vitro guide wire implanting tube which are mutually independent; the in-vitro drainage tube, the in-vitro irrigation tube and the in-vitro guide wire implanting tube are respectively communicated with the main drainage tube, the irrigation tube and the guide wire implanting tube which are arranged at the outer end of the in-vivo drainage tube. The three-cavity negative-pressure wound irrigation and drainage tube mainly adopts a three-cavity structure, is used for drainage of wounds deep in a human body and has the effects of being accurate in implanting, favorable in drainage and irrigation, resistant to blockage, and the like.

The invention relates to improvement of a green belt for roads and is characterized in that the surface of the green belt is lower than a road surface. The quickly seeping green belt is composed of a greening vegetation layer, a permeable soil layer and a grit layer which are sequentially arranged from top to bottom, and a permeable drain pipe is arranged in the grit layer. Accordingly, the green belt has the greening function and filtering and quick draining functions simultaneously and solves the problem of water gathering on the road surface when it rains. Besides, rain water which is drained and seeps to the underground is purified water filtered by vegetation, soil and grit. In addition, the green belt further expands rain water absorbing area and can collect more rain water to supplement underground water. Therefore, the green belt for roads effectively overcomes the insurmountable shortcomings of a design method of an existing green belt higher than the ground, and has a novel function which a green belt in the prior art cannot have.

The invention relates to a backflow-prevention anti-blocking drainage device with a large suction amount. The drainage device comprises a liquid inlet valve body (1), a liquid inlet valve core (2), a liquid inlet valve spring (3), an upper valve cover and a lower valve cover (4 and 10), a needle cylinder piston (5), a piston rod (6), a liquid discharging valve body (7), a liquid discharging valve core (8) and a liquid discharging spring (9), wherein the liquid inlet valve core (2) only allowing a liquid to flow downwards is arranged in the liquid inlet valve body (1), and an insertion hole for a liquid inlet pipe (11) is formed in the upper left part of the liquid inlet valve body (1); the liquid discharging valve core (8) only allowing the liquid to flow leftwards is arranged in the liquid discharging valve body (7); and an insertion hole of a liquid discharging pipe (13) and a duct allowing the needle cylinder piston (5) to move leftwards and rightwards are formed in the left side and in the upper right part of the liquid discharging valve body (7) respectively. The needle cylinder piston (5) moves leftwards and rightwards continuously, so that the liquid can be drained and discharged to a container. The backflow-prevention anti-blocking drainage device with a large suction amount has the advantages as follows: smooth drainage is realized, the drainage amount is large, retrograde infection of the liquid is prevented, blocking is avoided, and continuous drainage can be realized.

The invention discloses a rotation control device for a flip cover type drainer. A connecting rod (4) is fixedly connected on the side wall of the drainer (2); and the rotation control device further comprises a control mechanism which comprises a switch (9), a power supply (5), a controller (8) and a stepping motor (7) connected sequentially, wherein gears (6) are fixed on extension ends of a rotating shaft and the connecting rod (4) of the stepping motor (7), and the two gears (6) are mutually meshed; and the power supply (5) is controlled by the switch (9) to supply power, the controller (8) is used for controlling the rotating shaft of the stepping motor (7) to rotate, and the gear (6) drives the gear (6) on the extension end of the connecting rod (4) to turn over the drainer (2), thereby driving the drainer (2) to form a drainage channel with a drainage hole or be closed completely. The rotation control device disclosed by the invention can automatically control turnover of the drainer, and the drainer does not need to be manually pressed, so that the rotation control device can perform drainage timely, conveniently and rapidly.

The invention provides a coating stirring tank. The coating stirring tank is a tapered stirring tank and can effectively drain a mixture. According to the technical scheme, the coating stirring tank comprises a tank body and a stirring mechanism, wherein the upper end and the lower end of the tank body are open; the stirring mechanism is arranged at the opening in the upper end; the lower part of the tank body is a tapered structure;the opening in the lower end is connected with a guiding pipe; the stirringmechanism comprises a drive motor, a stirring rod and a stirring paddle; a supporting plate is arranged in the center of the opening in the upper end of the tank body; a through hole is formed in the supporting plate; the drive motor is arranged on the supporting plate, an output shaft of the drive motor penetrates through the through hole and is connected with the stirring paddle at the lower part; the stirring paddle is a pentagonal structure; multiple through holes are formed in the stirring paddle; a valve is arranged at the opening in the lower end of the tank body.

The invention relates to an automatic magnetic check valve, which comprises a cover body, an upper magnet, a valve body, a shaft seat, a valve, a lower magnet and a sealing ring, wherein the shaft seat is arranged on one side of the bottom of the valve body; the valve is hinged on the shaft seat; the upper magnet is arranged on the valve body; the lower magnet is arranged on the valve; the sealing ring is arranged between the valve and the valve body; and the upper magnet and the lower magnet are in a Z-plane asymmetric structure. When asymmetric magnets attract each other, an Fx component force not equal to zero is generated, the consistency of the repeated opening / closing action of the valve is greatly improved under the action of the Fx, and the valve is closed to be accurately attracted and sealed; the valve body has a high flow structure, so that an effective area of fluid flowing through the valve body is greatly improved; the valve body is hardly wound with hair and cotton and is cleaning-free; the valve can realize 90-degree opening in a circular pipeline, the drainage is not hindered and the flow velocity is high; and the overflow of sewage is prevented, polluted air, insects and cockroaches are prevented. The check valve is conveniently arranged at a sewage pipeline to replace the conventional water return bend, is suitable for sewage drainage, and is also suitable for other fluid pipelines with one-way flow requirement.

The invention discloses a filling and recovering device for low-melting-point alloy, which can automatically fill and recover the low-melting-point alloy. The filling and recovering device comprises a water tank, a turntable, a pouring gate (3), a cooling shower nozzle (4), a first manipulator (5), a second manipulator (6) and a third manipulator (7), wherein the first manipulator (5) is used for taking and placing a workpiece from and onto the turntable; the second manipulator (6) is used for taking and placing the workpiece from and onto the pouring gate (3); the third manipulator (7) can drive the cooling shower nozzle (4) to move along the filling direction of the low-melting-point alloy in the workpiece; a mounting base (8) and a water temperature keeping unit (9) are arranged in the water tank; the turntable is in rotatable connection with the mounting base (8); a rotating plane of the turntable is intersected with a horizontal plane; an openable and closed connecting pipe (10) for communicating the pouring gate (3) with the water tank is arranged between the pouring gate (3) and the water tank; one end of the connecting pipe (10) is connected with the bottom of the water tank; the other end of the connecting pipe (10) is connected with the pouring gate (3); and the cooling shower nozzle (4) is located under the pouring gate (3) and is of an annular shape encircling the outer wall of the workpiece.

The invention belongs to the technical field of rapid drainage treatment of sewage pipelines, and discloses a drainage device for preventing backflow of sewage and a drainage method of the drainage device. The drainage device is configured together with drainage equipment through a main sewage pipe, an anti-odor drainage pipe is arranged, the efficient drainage effect on waste water in a sewage pipeline is achieved, and meanwhile, odor in the sewage pipeline is further effectively prevented from scattering into a residence along the main sewage pipe. By arranging an alarm device, a control device, an actuator and other parts in the drainage device, it is ensured that the phenomenon can be detected at the fastest speed after the backflow in the sewage pipeline occurs, so that the backflow sewage in the sewage pipeline is successfully discharged, the loss rate of the sewage pipeline is significantly reduced, the repair labor loss is reduced, and thus the quality of national life is improved. The drainage method is simple in steps and convenient and quick, the effect of rapid drainage is achieved through a simple linkage method, and high efficiency and very high practicability are achieved.

The invention discloses a rapid drainage device for ICU nursing, and relates to the technical field of ICU intensive care. The device comprises a collecting box. A drainage tube is connected to the upper end of the collecting box; a pulse anti-blocking device is arranged on the drainage tube; the upper end of the collecting box is provided with a pulse negative pressure device; the pulse negativepressure device comprises a negative pressure pump installed at the upper end of the collecting box; and the pumping end of the negative pressure pump is connected with a B three-way tube; a pressuresensor module is mounted on a top end of the collection box; the pulse anti-blocking device includes a tube head communicating with a top end of the drainage tube; an annular elastic airbag is fixedlymounted on the left side of the tube head; the elastic airbag is connected with an air guiding tube; the end of the air guiding tube is connected with an A tee tube; the end of the air guiding tube is connected with a branch tube; the other end of the branch is in communication with the output port of a syringe. The device has the beneficial effects that the anti-blocking of the inlet of the drainage end is effectively achieved, and the drainage is facilitated quickly and efficiently, and the sealing of the end portion can be conveniently achieved to avoid backflow.

The invention discloses a brake pad for a disc brake. The brake pad comprises a friction layer and a steel backing layer, the steel backing layer is positioned above the friction layer and adhered to the same through a metal binding agent, a braking face of the friction layer is provided with a plurality of arc grooves which are distributed transversely and penetrate through the friction layer, and skewed slots which are distributed obliquely, longitudinally and uniformly and lead to the edge of the friction layer are formed in the outer sides of the arc grooves on two sides. A layer of rhombus net grooves is graved on a face, fitting with the friction layer, of the steel backing layer. Two cylindrical bosses are symmetrically arranged on the upper surface of the steel backing layer, and the outer edges of the bosses are provided with asterisk-shaped reinforcing ribs. The brake pad for the disc brake has the advantages of vibration reduction, noise suppression, long service life, high stability, good heat effect, high safety, effectiveness in improvement of safety of the brake and good application prospect.

The smooth transition medical catheter of the present invention includes a catheter body with a cavity inside. The catheter body is composed of a drainage part placed in the human body and a sealing part for guiding the drainage liquid. The drainage groove distributed in directions is special in that: the drainage part and the sealing part are a smooth integrated structure without a transition area. The invention effectively reduces the trauma to the wound tissue when the catheter is inserted and pulled out of the human body, avoids extra pain to the patient, and overcomes the disadvantages of the transitional drainage tube made by bonding. The catheter body can be made into various shapes, and the inner core can be made into a cross shape, an I-shape or a straight shape, which can be selected according to different needs. The invention has small trauma, quicker and more thorough drainage, effectively avoids the occurrence of inflammation caused by incomplete drainage, and can be used instead of the transitional drainage tube bonded in the existing market.

The invention relates to a bacterial outer membrane vesicle, a nano vaccine containing the bacterial outer membrane vesicle as well as a preparation method and application thereof. The bacterial outermembrane vesicle contains molecular gluewater protein SpyCatcher and / or SnoopCatcher, the tumor vaccine comprises the bacterial outer membrane vesicle and an antigen connected with the bacterial outer membrane vesicle in the form of an isopeptide bond, and the antigen carries SpyTag and / or SnoopTag. According to the invention, the bacterial outer membrane vesicle containing molecular gluewater protein SpyCatcher and SnoopCatcher is used as a tumor vaccine platform and is connected with the antigen carrying SpyTag and / or SnoopTag to obtain the tumor vaccine, and the tumor vaccine can effectively activate an organism to generate innate immunity and realize specific killing of a plurality of antigens at the same time. According to the method, personalized tumor vaccines for tumors from different sources can be rapidly obtained.

The invention relates to an airflow ejector adopting annular swirl injection. The problems that high pressure recovery airflow fast flows and is efficiently ejected to the normal pressure state are solved effectively. An ejected airflow inlet pipe is installed in the upper portion of the center of a mixed airflow diffusion pipe in a sleeved mode. The upper end of a first straight pipe section stretches out of the upper portion of the center of a second straight pipe section. The lower end of the ejected airflow inlet pipe is arranged in the center of the joint of a second gradual contraction section and a second contraction-expansion section and stretches into the upper portion of the second contraction-expansion section. An ejection airflow annular channel is formed between the second straight pipe section and the outer wall of the ejected airflow inlet pipe. A first contraction-expansion section forms an ejected airflow contraction-expansion nozzle which contracts first and then expands. An ejection airflow inlet pipe is installed on the outer wall of the second straight pipe section in a rotary-cut mode. A contraction-expansion annular nozzle is formed between the outer wall ofthe second gradual contraction section and the inner wall of the first contraction-expansion section. The mixed airflow diffusion pipe and a center cavity of the ejected airflow inlet pipe form a mixed airflow diffusion channel in the axial direction. An ejected airflow swirl deflector is installed in the position, close to an upper opening of a first gradual contraction section, in the first straight pipe section.

The invention discloses an anti-theft sliding window with an invisible screen window. The anti-theft sliding window comprises a window frame, wherein the window frame is glidingly provided with a first window sash and a second window sash; a flanging type connector is respectively arranged on the first window sash and the second window sash; each flanging type connector is provided with an inclined guide end and is assembled with an anti-collision airtight rubber strip; an arc-shaped hollow reinforcing hook is respectively arranged on the first window sash and the second window sash; a plurality of lock grooves recessed into the first window sash are transversely formed in the first window sash; pressing locks matched with the lock grooves are arranged on the second window sash; a first convex edge is arranged on the second window sash; a second convex edge is arranged on the window frame; the first convex edge and the second convex edge form a screen window body; an aluminum screen is arranged between the first convex edge and the second convex edge; and an elastic element is arranged on the aluminum screen. The airtight effect is improved; the wind-resistant performance and the safe anti-theft function are enhanced; meanwhile, a door window can be tightly locked in an open state; a safety protection effect is achieved; the mosquito entering caused by successive actions during operation is avoided; the mosquito prevention effect is good; and deformation and damage cannot easily occur.

The invention discloses lightning rod anti-fracture equipment for a 5G communication base station. The lightning rod anti-fracture equipment comprises a base plate, a supporting device, a supporting rod and a lightning rod, wherein the supporting device is welded to the top center of the base plate; the supporting rod is sleeved in the middle part in the supporting device; and a lightning rod is installed at top end of the supporting rod. Due to the unbalanced position of a supporting point of the lightning rod shakes, a clamping device is reset along with the swinging deformation of the supporting rod to clamp and support the supporting rod, thus welding spots between the supporting rod and the lightning rod anti-fracture equipment are prevented from being easily oxidized and rusted by air, welding spot detachment is reduced, the lightning rod can be kept in situ conveniently, the lightning rod is enhanced to drain thunder and lightning, the 5g base station is protected, because current passes through the supporting rod, the temperature of the supporting rod is increased, the current conveying speed of the supporting rod is reduced, blades of a heat dissipation block are in magnetic force fit with a magnetic block, the blades rotate to generate wind power to accelerate air flow around the supporting rod and accelerate temperature reduction of the supporting rod, and the 5G base station is protected by attracting and consuming the current of the supporting rod.

The invention discloses a method for preparing nylon fibers, which comprises the steps of performing polymerization reaction on raw materials containing 1,5-pentamethylenediamine and adipic acid and then directly spinning them. The present invention also provides a nylon fiber prepared by the aforementioned method. The method of the invention prepares nylon 56 yarn by combining nylon polymerization and melt direct spinning, which reduces production cost, waste gas discharge and environmental pollution. The high-performance nylon fiber prepared by the present invention can be further used to make textile materials such as yarn, woven fabric, knitted fabric or non-woven fabric, and can be applied to the fields of clothing, industry, decorative carpets, etc., and has a wide range of industrial applications. Application prospect.

The invention relates to the field of a device used for discharging liquid from a sealed container mainly used for containing gas, in particular to a one-way water-discharging two-way gas-guiding valve used for automatic water discharging of a motor shell. The one-way water-discharging two-way gas-guiding valve used for automatic water discharging of the motor shell comprises a screw plug valve body (1), and is characterized by further comprising a rubber sealing body (2), a ball float valve element (3) and a screw plug valve bottom (4), wherein the rubber sealing body (2) is embedded in the position of a step of valve through holes (11) of the screw plug valve body (1), the screw plug valve bottom (4) is connected with the bottoms of the valve through holes (11) in a threaded sealing mode, and the ball float valve element (3) is arranged in a hollow cavity (12). The one-way water-discharging two-way gas-guiding valve used for automatic water discharging of the motor shell is simple in structure, convenient to use, good in unipolarity, and rapid in water discharging.

The embodiment of the invention discloses a live broadcast room transmission method and device, a storage medium, computer equipment and a system. According to the embodiment of the invention, the method includes: receiving a transmission prompt floating window sent by a server; displaying a transmission prompt floating window on the current display interface; obtaining first channel information and a target virtual resource in response to a touch instruction of the first audience user for transmitting the prompt floating window; and skipping to display the live broadcast room corresponding to the first channel information, and getting the target virtual resource. Therefore, the transmission prompt floating window sent by the server is displayed in a visual form, and through the touch operation on the transmission prompt floating window, the direct broadcasting room corresponding to the first channel information can be quickly jumped to and the target virtual resource can be received, the quick drainage of the direct broadcasting room can be realized, and the diversity and balance of the direct broadcasting can be greatly improved.

The invention provides a cover assembly and a washing machine with the cover assembly. The cover assembly comprises a top cover, a control panel, a water retaining member and a water collecting groove, wherein the control panel is connected with the top cover; the water retaining member is located under the top cover, at least partial water retaining member back on to the top cover is sunk to forma water retaining groove, and the water retaining groove is located under the conjunction of the control panel and the top cover to receive seeped water; the water collecting groove is formed in theend of the water retaining member, the water collecting groove is communicated with the water retaining groove, and the seeped water flows into the water collecting groove through the water retaininggroove. The cover assembly and the washing machine have the advantages that the water retaining member is arranged to prevent the seeped water from flowing to electric devices on the control panel toensure the electrical safety of the washing machine; the water collecting groove is formed in the end of the water retaining member to collect the seeped water, thereby preventing the electric devicesfrom being located in a wet environment due to the fact that excessive seeped water is accumulated in the water retaining groove, and further ensuring the electrical safety of the washing machine.

The invention discloses a building construction rainfall drainage structure. The structure comprises a base and an upper cover plate, wherein a water storage tank is arranged on the right side of thebase, a water outlet pipe is arranged at the lower right corner of the bottom of the water storage tank, a guide pipe is connected to the upper surface of the water outlet pipe, the upper cover plateis located on the upper right portion of the base, a water seepage plate is arranged on the left side of the upper cover plate, a water suction pump is arranged under the upper cover plate, and an inclined surface is arranged on the upper surface of the base. According to the building construction rainfall drainage structure, rainwater can be filtered, and the situation that the rainwater carriesimpurities such as dust to enter the structure, and consequently the water outlet pipe is blocked is prevented; meanwhile, through a floating rod and a microswitch, according to the height of the liquid level of accumulated water, the working state of the water suction pump is automatically controlled, automation of drainage is achieved, and the whole drainage structure is simple in principle, practical and suitable for popularization.

The invention discloses a pollution-free water-based fire extinguishing agent. The pollution-free water-based fire extinguishing agent is formed through mixing and stirring of the following components of, by weight, 34 parts of a hydrocarbon surfactant, 6 parts of ammonium polyphosphate, 20 parts of coconut oil alkyl betaine, 4 parts of cationic hydroxyethyl cellulose, 14 parts of dodecyl imidazoline, 2 parts of a fluorinated surfactant, 8 parts of urea, 7 parts of sodium chloride, 7 parts of polysorbate 20, 16 parts of an antifreeze agent, 15 parts of ethylene glycol and 53 parts of deionized water. The pollution-free water-based fire extinguishing agent can extinguish fires of the class A and the class B and can also be stored and attenuated with water for application in the environment with the temperature higher than -40 DEG C, and the defect that a traditional water-based fire extinguishing agent cannot be stored or attenuated with water for application in the environment with the temperature lower than -10 DEG C is overcome; in addition, the pollution-free water-based fire extinguishing agent is definitely safe in the processes of production, transportation, storage, application and the like and does no harm to human bodies; after the pollution-free water-based fire extinguishing agent is used, no residue exists; and after exceeding the time limit, the pollution-free water-based fire extinguishing agent can be used as an oil dirt cleaning agent and is environmentally friendly and harmless.

The invention relates to an information system and an information processing method, and provides a system and method for multi-park credit general exchange. A credit general exchange management platform is established in multiple parks owned by a real estate developer. The credit general exchange management platform comprises a master management server, a plurality of park management servers, a member management server, a credit management server, merchant credit terminals used for connection between merchants registered as members and the credit management server for credit management, property credit terminals used for connection between park property management centers registered as members and the credit management server for credit management, and an APP client used for downloading and login of smart phones of users and capable of being connected with the credit management server for credit management of the members. According to the system and method, problems that conventionalcredits between consumers and the merchants cannot be effectively utilized, the consumption cannot be promoted, and the waste is caused are effectively solved.