92 results about "Suction drainage" patented technology

The present invention relates to a closed suction drainage apparatus with a drainage tube having anti-clogging and irrigating functions. The closed suction drainage apparatus of the present invention have a double tube structure of the drainage tube and its connection unit. One tube of the drainage tube is used for drain blood and exudates from a dead space and the other tube is used for applying positive pressure to remove clotted substance in the drainage tube or irrigating a wound with liquid. The closed suction drainage apparatus according to the present invention can easily clear the clogged drainage tube or irrigate dead space when needed, even in the state that it is inserted in the body.

A bite block intended primarily for use with upper gastrointestinal endoscopy. The bite block comprises a unitary fabrication that fits into the mouth between the teeth or dental ridges and has a central passageway large enough to accommodate a gastroscope. The bite block also has a surface which lies exterior to the oral cavity and extends around the outer surface of the lips. The bite block also has a suction device which can be attached to a standard suction machine via flexible tubing or with an intermediary hollow wand. The suction device extends through the bite block into the intra-oral portion thereof where it forms an angle and allows suction drainage of pooled oral fluids from the cheek cavity. The interior tip of the suction device has multiple slit like openings circumferentially arranged to allow suction drainage of oral fluids without becoming occluded by the oral tissues.

A multi-lumen catheter for use in a cavity having a main lumen surrounded by a wall, and at least one access lumen positioned in or on the wall, the one access lumen conveys a solution to the cavity and said main lumen. A method for treating or preventing fluid or accumulation in a body cavity including (a) aseptically inserting through an incision at an insertion site the catheter comprising a main drainage lumen surrounded by a wall and the one access lumen positioned in or on the wall, (b) securing the inserted catheter by closing the incision with a suture, (c) infusing a physiological solution through the one access lumen to dilute a drainage fluid, (d) connecting a distal end of a main drainage lumen of the catheter to a suction drainage system, and (e) applying a vacuum force to the suction drainage system to remove the diluted drainage fluid.

The present invention provides a component classification apparatus for absorbing and conveying small, thin and little mass components and accommodating the components into containers without damaging the components, and an electronic component characteristic check classification device using the apparatus. The component classification device comprises a plurality of containers; a temporary receiving unit composed of mesh panel and suction drainage port, and arranged on the temporary receiving position of the containers; a suction nozzle; and a pressure control unit for controlling the pressure of the suction nozzle and the suction drainage part, the components are received by the temporary receiving unit and falls into the containers. The electronic component characteristic check classification device comprises a supply table part (1), a camera / lighting part (2), a supply P & P part (absorbing and conveying part) (3) for absorbing the electronic components from the conveying position of the electronic components and conveying to the delivery position, a measuring part (5) and a component classification part (6).

A bite block intended primarily for use with upper gastrointestinal endoscopy comprises a unitary body that fits into the mouth between the teeth or dental ridges. The bite block includes a central passageway large enough to accommodate a gastroscope. The bite block also has a surface which lies exterior to the oral cavity and extends around the outer surface of the lips. A suction wand is releasably connected to the body and extends into the intra-oral portion thereof where it forms an angle and allows suction drainage of pooled oral fluids from the cheek cavity. The interior tip of the suction wand has a terminal opening as well as multiple circumferentially arranged secondary openings adjacent the terminal opening all of which allow suction drainage of oral fluids with diminished occlusion by the oral tissues.

A foundation reinforcement device comprises an isolator inserted inside a soil body on the periphery of a foundation area needing reinforcement, wherein the upper end face and the lower end face of the isolator are open. N columns of drill holes are evenly formed in the foundation area needing reinforcement. A grouting device and a suction device are matched with the drill holes. An isolation filmis laid on the top face of the foundation area needing reinforcement, and the edge position of the foundation area needing reinforcement is in closed connection with the isolation film. The suction device comprises a suction pipe body, wherein the suction pipe body comprises a suction pipe with the top end being open; a plurality of suction holes are evenly formed in the pipe wall of the suctionpipe. The suction pipe is sleeved with a metal screen outer layer, and the space between the suction pipe and the metal screen outer layer is filled with an isolation layer. According to the foundation reinforcement device and a foundation reinforcement method, the problems that grout is not liable to sufficiently inject into the soil body and the grouting efficiency is low can be solved; and by combining deep hole grouting and local vacuum suction drainage, the grout quickly permeates into the soil body for reinforcing the soil body, and both time and labor are saved.

The invention provides a buoyancy regulating system for a micro underwater robot and belongs to the field of underwater robots. The buoyancy regulating system for the micro underwater robot comprisesa buoyancy regulating part and a buoyancy leveling part; a motor shaft of the buoyancy regulating part is connected with a small gear; the small gear is engaged with a big gear; the big gear is connected with a lead screw; the lead screw is fixedly connected with a piston; a lead screw nut is connected with a big limiting piece and a direct small potentiometer; a piezometric tube for a piston cylinder bottom cover is connected with a filter; and a lead screw nut of a lead screw motor of the leveling part is connected with a small limiting piece, a big potentiometer and a balancing lead block.The buoyancy regulating system for the micro underwater robot has the advantages that the gear can be connected with the lead screw to directly drive the piston to move by using the mechanical regulating mode; the structure is compact and simple; and the water absorbing capacity and the water displacement can be accurately metered by using the small potentiometer to accurately control the buoyancyregulation. The leveling part balances the posture change caused by water absorption and water displacement through the movement of the balancing lead block so that the posture of the whole underwater robot is not affected.

The invention discloses a separating shunt suction drainage water-free sweeping vehicle. The separating shunt suction drainage water-free sweeping vehicle comprises a vehicle body, a power system, a separating shunt suction drainage fan, a separating shunt suction drainage fan air inlet, a separating shunt suction drainage fan discharge outlet, a separating shunt suction drainage fan air exhaust outlet, a garbage suction nozzle, a garbage suction pipe, a garbage delivery pipe and a garbage container, and is characterized in that a suction drainage fan air exhaust pipe is arranged at the outer side of the separating shunt suction drainage fan air exhaust outlet and stretches to the bottom part of the vehicle body, the tail end of the suction drainage fan air exhaust pipe is provided with suction drainage fan air exhaust branch pipes which are in bilateral symmetrical arrangement and are respectively positioned at the left side and the right side of the bottom part of the vehicle body, the tail ends of the suction drainage fan air exhaust branch pipes are provided with air exhaust branch pipe garbage sweeping nozzles, and the air exhaust branch pipe garbage sweeping nozzles point to a garbage suction nozzle inlet which is arranged between the bottom part of the vehicle body and the ground from two sides of the bottom part of the vehicle body. According to the separating shunt suction drainage water-free sweeping vehicle disclosed by the invention, by adopting the new working principle for cleaning garbage and rubbish, the cleaning effect is good, the energy consumption is less, the efficiency is high, the function is multiple, the use range is wide, the manufacturing cost is low, and the maintenance is convenient.

The invention discloses an alternative hollow negative-pressure drainage treatment system for debridement circle hydrotherapy of wounds according to a vacuum sealing drainage technology and a principle of promoting wound repair by virtue of hydrotherapy. The treatment system comprises a support cover, medical sponge, a water inlet passage, a water outlet passage, a drainage tube, and an input tube, and is characterized in that a tiny pipeline system is arranged in an inner core of the support cover, a side opening of a pipeline is positioned below the inner surface of the support cover, the medical sponge is arranged on the inner surface of the support cover, the water inlet passage and the water outlet passage are positioned at the top of the support cover, the lower end of the water inlet passage communicates with a tiny pipeline, the upper end of the water inlet passage is connected with the input tube, the lower end of the water outlet passage communicates with the support cover, and the upper end of the water outlet passage is connected with the drainage tube and is used for externally connecting an alternating negative-pressure suction device. The treatment system not only can clear wound secretion in time but also can continuously apply circle hydrotherapy and alternative hollow negative-pressure treatment to the wounds and keep low-oxygen humid environments of the wounds, thereby achieving an effect of promoting rapid healing of the wounds.

The invention discloses a detachable multifunctional abdominal cavity drainage tube, wherein an outer catheter and an inner catheter of the drainage tube are soft plastic tubes, and the outer catheterand the inner catheter are matched and connected with an outer connection structure through an inner connection structure; when the patient is drained, the outer catheter and the inner catheter playa supporting role in combination, so as to avoid a situation that drainage cannot be performed due to squeezing the inner catheter. When the drainage catheter is blocked, the inner catheter can be removed from the outer catheter to avoid secondary puncture and alleviate the pain and burden of patients. The sealing plug of the water injection pipe on the external catheter can be connected with thesyringe after being removed, and can be used for endoluminal drug infusion treatment or irrigation. If negative pressure suction is required for the infected wound, the drainage bag valve can be turned off and the negative pressure extraction device is connected to the negative pressure tube of the inner catheter for negative pressure drainage. The drainage tube has the functions of blockage prevention, negative pressure suction, intracavity drug filling, etc., is convenient and reliable to implement, and has good market application value.

The invention discloses a medical negative pressure drainage ball for squeezing backflow prevention. The drainage ball comprises a ball body, a drainage pipe and protection covers. A liquid dischargepipe is connected with the lower portion of the ball body. A liquid discharge opening is formed in the liquid discharge pipe. The outer side of the liquid discharge pipe is connected with a connectingbelt. A connector is installed above the ball body. The drainage pipe is located above the connector. A protection block is installed on the drainage pipe. A pipeline hole is formed in a sealing plate. A slider is arranged on the outer side of the sealing plate. The protection covers are located on the outer side of the ball body. A binding belt is connected to the connecting block and provided with a button. The two hemispherical protection covers are clamped and connected with the ball body through the binding belt and the button, the ball body can be conveniently protected, the liquid backflow phenomenon caused when a patient squeezes the drainage ball is avoided, the normal drainage work of the drainage ball is guaranteed, and meanwhile the safety of hematocele drainage is increased.

The invention discloses a coal mine underground sump intelligent drainage control system based on big data, which is used for solving the problems that in the prior art, the working capacity and the working state of a water pump body are not inspected by detecting technical parameters of the water pump body, and different numbers of water pumps are not adopted for draining water at different waterlevel heights. The coal mine underground sump intelligent drainage control system is provided with a liquid level sensor I and a liquid level sensor II, through comparison of acquired quantities, when a difference value of acquired data is large, an alarm instruction is sent to an alarm module to drive an alarm device to give an alarm, and when the value of the acquired data is within an allowable error range, and a water level numerical value acquired by the liquid level sensor I is taken as a standard to be sent to the control module. In this way, collection errors of the liquid level sensor are reduced, and timely maintenance is conducted. The number of started water pumps is judged according to the water level acquired for the second time, and all the water pumps are directly startedwhen the water level exceeds the early warning limit value, so that water can be pumped and drained quickly, electric energy can be saved, and the energy-saving purpose is achieved.

A bite block intended primarily for use with upper gastrointestinal endoscopy comprises a unitary body that fits into the mouth between the teeth or dental ridges. The bite block includes a central passageway large enough to accommodate a gastroscope. The bite block also has a surface which lies exterior to the oral cavity and extends around the outer surface of the lips. A suction wand is releasably connected to the body and extends into the intra-oral portion thereof where it forms an angle and allows suction drainage of pooled oral fluids from the cheek cavity. The interior tip of the suction wand has a terminal opening as well as multiple circumferentially arranged secondary openings adjacent the terminal opening all of which allow suction drainage of oral fluids with diminished occlusion by the oral tissues.

The invention discloses a negative-pressure control valve, which comprises a valve core and a valve base, wherein the longitudinal section of the valve core is conical, trapezoidal or circular; the valve base is provided with a concave base which is matched with the valve core; a convex ring is arranged on the upper part of the valve core; a groove formed at a corresponding position on the valve base is locked with the convex ring on the valve core; the valve core is turned around the groove; the valve core and the valve base are provided with through holes; the diversion flow is determined by the coincidence area of two through holes; and the through hole on the valve base is communicated with a valve base connecting tube. A negative-drainage bottle adopting the negative-pressure control valve comprises a drainage bottle, a negative-pressure control valve and a drainage tube, wherein the drainage tube is connected with the negative-pressure control valve and the drainage bottle; and the drainage bottle is a vacuumized negative-pressure bottle.

A pumped drainage apparatus for a shower includes a waste water unit, a waste water inlet for accepting waste water runoff from a shower, a waste water outlet in fluid communication with the waste water inlet, a pump in fluid communication with the waste water unit, a sensing circuit including one or more sensors for sensing waste water, and a control circuit for controlling and varying a flow rate of the pump based on an output of the sensing circuit. The sensors may be isolated to prevent contact with waste water while the apparatus is in use. A variable flow control device for the pumped drainage apparatus is also provided.

The invention discloses a medical manual vomica negative pressure suction drainage device. The device comprises a negative pressure container and a drainage unit, the drainage unit comprises a drainage bag fixedly connected to the side wall of the negative pressure container, the drain outlet of the drainage bag is connected to a drainage pipe head with a drainage valve, the drainage bag is provided with a drainage pipe with a control valve and volume scale lines, and a digital display pressure sensor is arranged in the drainage bag; the drainage bag is provided with an air suction pipe head close to the drainage pipe, and the air suction pipe head is provided with a one-way membrane flap for preventing pus from flowing out; and the outer side wall of the hand-held end of the negative pressure container is provided with a groove, and the negative pressure container is provided with a negative pressure device for extracting air in the drainage bag. The drainage device is simple in structure and simple to operate, can accurately adjust the negative pressure of the drainage bag, can form stable and continuous negative pressure, enables pus to flow into the drainage bag at a uniform speed, completely avoids pus backflow caused by overlarge pressure and damage to tissues around a patient, is high in safety, and reduces the infection probability of the patient.

The invention discloses a negative-pressure drainage device, which comprises a drainage tube, a negative-pressure device, a connecting tube and a drainage bag, wherein the front end of the drainage tube is provided with a side hole, and the back end of the drainage tube is connected with the negative-pressure device; the negative-pressure device comprises a negative-pressure tube, a piston and a piston rod; the center of the piston rod is provided with an axially-perforated through hole; the front end of the through hole passes through the top end of the piston, and is communicated with the negative-pressure tube; the back end of the through hole is connected with the drainage bag through the connecting tube; and both the drainage tube and the connecting tube are provided with clips. During replacement of drainage liquid in the negative-pressure tube in the device, the clip of the drainage tube is fastened, the clip of the connecting tube is released, and the piston is pushed, so thatthe drainage liquid can flow from a pipeline in the piston into the drainage bag; the entire process is performed in an enclosed cavity gap, so that the infection rate is lowered greatly; and the negative-pressure drainage device is convenient to use, and is sanitary.

The invention discloses a built-in negative-pressure drainage metering device for blood discharged from vagina for obstetrical department. The device comprises a blood collecting device for receiving blood discharged from vagina and a negative-pressure drainage bag connected with the blood collecting device by a dual-cavity pipe. The wall of the blood collecting device is a dual-layer hollow wall; and a sealed cavity is formed between the inner wall and the outer wall of the blood collecting device. The blood collecting device is made of a flexible material. The dual-cavity pipe includes a drainage part for draining the blood in the blood collecting device to the negative-pressure drainage bag and a guiding part for guiding a stroke-physiological saline solution into the cavity. According to the built-in negative-pressure drainage metering device disclosed by the invention, timely drainage and collection of blood discharged from vagina during operation of the cesarean section and blood discharged from vagina after delivery can be realized; the bleeding amount is measured accurately in real time; and a doctor can be assisted in determining an intrapartum or postpartum bleeding amount rapidly and accurately, so that early-stage discovering and timely rescue for postpartum hemorrhage can be realized well.

The invention discloses a suction drainage device that comprises: a cylinder sleeve where the inside of the cylinder sleeve is provided with a step hole and the wall of the cylinder sleeve has a waste-discharging outlet; a cylinder liner with a bottom that includes a shaft hole and where the wall of the cylinder liner is provided with a flange; a piston with a piston rod; a cylinder sleeve cover with a step hole along the axis, and the body is also provided with a hanging hole; a cylinder liner lock that clutches the piston rod; a shifting fork assembly that is fixed inside the step hole of the cylinder sleeve cover; a ring shaped cylindrical liner lock seat that includes a slope and a pivot pin; an annular end cover that contains a through hole in its center, wherein: the cylinder liner is located inside the cylinder sleeve, the piston is located inside the cylinder liner; the cylinder sleeve cover is connected to the cylinder sleeve along the axis; the cylinder liner lock seat is located in between the cylinder sleeve and cylinder sleeve cover; the annular end cover caps the cylinder sleeve cover. The invention utilizes the two-stage movement of the piston and the cylinder liner, which greatly reduces the piston stroke without reducing its efficiency. Its advantages include compact structure, convenient operation and high efficiency.

A mammary gland surgical negative pressure drainage device The invention relates to the technical field of medical devices, comprising a measuring cylinder, wherein a rubber plug is sleeved in the measuring cylinder, the right side of the rubber plug is fixedly connected with one end of a dose push rod, and the other end of the dose push rod is fixedly connected with a handle, and the handle is positioned on the right side of the measuring cylinder, and the lower surface of the measuring cylinder is clamped with a third sealing plug ring. A mammary gland surgical negative pressure drainage device By setting ball valves and plugs, the ball valve is moved into the pipette by the spring force of the spring, the stopper is then opened and the dose push rod is pushed leftward by the handle, Further, the liquid accumulated in the measuring cylinder can be discharged through the liquid outlet pipe, and when the liquid is pumped again, the stopper is sent into the liquid outlet pipe to repeatthe above operation, so that the medical personnel only need to insert a long sharp needle once when the liquid is pumped for many times, thereby not only reducing the pain of the patient, but also alleviating the secondary injury to the patient caused by the puncture.

The invention discloses an intra-tube forming machine of a sputum-suction drainage tube or a urethral catheter. The intra-tube forming machine comprises a rack, a feeding box, a grabbing and carrying assembly, a heating and necking-down assembly, a notching assembly and a transmission assembly, wherein a plurality of drainage tubes are clamped by a clamp to form a drainage tube assembly; the drainage tube assembly is lifted up to an opening face of the feeding box from a material box inside the feeding box through a lifting mechanism, then is moved onto a synchronous belt of the transmission assembly in an upgrade and degrade manner through a sucking claw assembly, is transmitted to the heating and necking-down assembly through the transmission assembly, and is positioned by a clamping and positioning assembly, then one end of the drainage tube assembly is subjected to heating and necking-down operation by the heating and necking-down assembly, the heated drainage tube assembly is transmitted to the notching assembly through the synchronous belt, then, the necking-down end of the drainage tube assembly is trimmed by the notching assembly, and the drainage tube assembly is sent to a discharging hole by a discharging and grabbing assembly. According to the invention, mechanical production and processing equipment is adopted to meet the requirements of mechanical and automatic processing and production, so that the production and processing efficiency is improved, in addition, the transmission assembly is used to enable the equipment to realize streamlined production and processing operation truly, so that, the investment cost is reduced, and meanwhile, the reject ratio is reduced.

A pump-jet propeller belongs to the mechanical device in the field of ship propulsion. It includes a hydrodynamic chamber, a suction and discharge valve group, an opposite-pole superconducting solenoid magnet and an electromagnetic piston placed in a superconducting magnet temperature hole core barrel. The electromagnetic piston is composed of a solenoid coil that generates electromagnetic thrust and a disc that pushes water. The shaped piston is connected as a whole. Periodically change the current direction of the normally conducting solenoid coil on the electromagnetic piston, periodically change the electromagnetic force acting on the electromagnetic piston to drive the piston to reciprocate, and realize the suction and drainage of the reciprocating pump spray through the hydrodynamic chamber and the suction and drainage valve group During the working process, the reaction force of water spray produces forward thrust. The invention has no rotating parts and transmission mechanism, low noise, high efficiency, can be used in both conductive fluid and non-conductive fluid, and is suitable for deep sea propulsion because there is no dynamic shaft seal problem of the transmission shaft.

The invention discloses a low-energy consumption vacuum suction drainage control system. The low-energy consumption vacuum suction drainage control system comprises a mold cavity assembly. The mold cavity assembly is provided with a pressure spot signal station. The pressure spot signal station is electrically connected to a controller. The mold cavity assembly is connected to a vacuum tank by a pipe. A control valve is arranged at the pipe between the mold cavity assembly and the vacuum tank. The control valve is electrically connected to the controller. The bottom of the vacuum tank is provided with a drainage pipe and a drainage valve. The vacuum tank is connected to a vacuum pump unit by a pipe. The vacuum pump unit is driven by a motor and is electrically connected to the controller. An upper end of the vacuum tank is provided with a safety valve and a pressure instrument. The safety valve and the pressure instrument are electrically connected to the controller. The low-energy consumption vacuum suction drainage control system has a simple structure, realizes suction drainage by a pressure difference formed between the vacuum tank and the mold cavity assembly, has low power consumption, reliable operation performances and low energy consumption, and realizes stable product quality after dehydration and product water content less than 40%.

The invention relates to a negative pressure suction water drainage and gas production device, and belongs to the technical field of oil and gas field development. The water drainage and gas production device comprises an oil production tree which is connected with a gas conveying pipeline through a throttling valve A, and further comprises a horizontal tank, a multi-cylinder pump, an injection pump and a gas-liquid-sand separation system. A throttling valve B is arranged on the oil production tree. The suck-in opening of the multi-cylinder pump is connected with the horizontal tank. The outlet of the multi-cylinder pump is connected with the injection opening of the injection pump. The suck-in opening of the injection pump is connected with the throttling valve B of the oil production tree. The outlet end of the injection pump is connected with the inlet end of the gas-liquid-sand separation system. The output end of the gas-liquid-sand separation system is connected with the gas conveying pipeline through a check valve A. The water drainage and gas production device can solve the problem of liquid accumulation of a low-pressure low-yield shaft of a water-bearing gas reservoir and is high in gas lift efficiency.

The invention relates to a multifunctional intracranial hematoma removing device, and belongs to the technical field of intracranial hematoma removing medical apparatuses. The multifunctional intracranial hematoma removing device is formed by a device body, a guiding rod and a visible device. A water injection pipe, a medicine injection pipe and two drainage liquid sucking pipes are manufactured in the cylindrical wall of the device body, and the four pipes are evenly distributed on the circumference of the device body at 90 degrees; slant injection holes and a center through hole are manufactured in the bottom of the device body, and two lighting devices are installed. After the guiding rod is drawn out of the device body, the visible device connected with a computer terminal can be installed in a cylinder. According to the multifunctional intracranial hematoma removing device, the multiple functions of sludged blood smashing, blood sucking, flushing draining, medicine injection and lighting are integrated, a hematoma removing operation can be completed with one device, the intracranial pressure can be effectively reduced, and the operation time is short. The problems that an existing minimally-invasive removing device is single in function and long in operation time, and does not have the lighting function, brain blood vessel lesions cannot be found in the early stage, and disease future trouble of a patient is left are solved.

The invention provides a double-hole type sucker negative pressure drainage device which is suitable for large-area wound therapy in a human body or the body surface of the human body. The double-hole type sucker negative pressure drainage device comprises multi-hole wound dressing, an integral external sucker and a biological semipermeable membrane, wherein the integral external sucker comprises a sucker body, a sucker connecting membrane, a drainage outer pipe and a washing pipe, an attraction hole is formed in the bottom of the sucker body, a drainage channel and a washing channel are arranged inside the sucker body, and the sucker body is placed on the biological semipermeable membrane provided with a through hole; the sucker connecting membrane covers the sucker body, and a position, stretching out of the sucker body, of the sucker connecting membrane is pasted with the biological semipermeable membrane; the drainage channel is communicated with the drainage outer pipe, and the drainage pipe is connected with a drainage container and a negative pressure source; the washing channel is communicated with the washing pipe, and the tail end of the washing pipe is further provided with a sealing cover. The double-hole type sucker negative pressure drainage device has the advantages that the problem that the drainage outer pipe and the washing pipe are easily blocked is thoroughly resolved, negative drainage effects and washing effects are improved, and wound concrescence can be well promoted.

The invention relates to a drainage tube for a thoracocentesis negative pressure drainage device, which belongs to the technical field of medical appliances. The thoracocentesis negative pressure drainage device comprises a drainage container and a spring arranged in the drainage container, the drainage tube comprises a tube body, wherein drainage holes are arranged at intervals on the tube wall at one end of the tube body, and all drainage holes are communicated with a tube cavity of the tube body. The invention has the advantages that because one end of the tube body is provided with the drainage holes, the cigarette holder type drainage effect can be realized for shortening the drainage time, and the drainage tube is provided with the tube cavity with the advantages that a puncture cutter can be matched and connected with the tube body, the operation can be simplified, and the tube body blockage can be avoided.

The invention belongs to the technical field of garage flood protection devices, and particularly relates to a multistage filled basement waterproof device. The device comprises a plurality of main bodies and a concrete structure. The concrete structure is embedded into a road surface and leveled with the road surface. The main bodies are mounted side by side on the concrete structure, and connected with the concrete structure in a movable mode. The invention also discloses an application method of the multistage filled basement waterproof device. The method includes the steps that burying thedevice, filling disinfecting and sterilizing drugs, setting the positions of the main bodies, sealing automatically, pumping and draining water, and disinfecting and sterilizing automatically. The multistage filled basement waterproof device is simple in structure, convenient in operation, stable and reliable, and long in service life, and has a good blocking effect on a large amount of rainwater, which can form a strong waterproof wall and prevent a large amount of water from pouring into underground facilities. The device can also be used to disinfect and sterilize water drainage channels and water collecting channels to prevent diseases and outbreaks after floods.

The invention discloses a water suction-drainage fan which comprises an air barrel and a fan arranged in the air barrel; and fan blades of the fan are made of a water absorption material. In use, when water vapor is exhausted into the air barrel, fan in the air barrel absorbs water vapor as a result of the adopted water absorption material; water vapor absorbed by fan blades of the fan is thrown onto the inner wall of the air barrel when the fan rotates at full speed; under action of gravity, water flows down along the inner wall of the air barrel, enters a water storage tank through a ring-shaped water collecting slot formed in the air barrel, and is exhausted from a water outlet tube, and flowed-out water can be continuously utilized after being treated by a sewage treatment device subsequently. The water suction-drainage fan disclosed by the invention can effectively reduce white smoke (water vapor) exhausted from the top of a chimney, effectively avoids the shut-down problem caused by report of uninformed ones, so that working efficiency is improved; and meanwhile, water vapor exhausted from the chimney can be treated and recycled, so that resources are saved and waste is reduced.

The invention brings forward a negative pressure drainage system for a wound. The negative pressure drainage system comprises a polyethylene alcohol hydration sponge, a medical wound film, a drainagetube and a negative pressure drainage device, wherein a medical PVC bag is mounted on the polyethylene alcohol hydration sponge; a plurality of drainage holes are formed in a rectangular array in theside wall of one surface where the medical PVC bag contacts with the polyethylene alcohol hydration sponge; a drainage tube joint is connected to an opening of the medical PVC bag; the medical PVC bagand the polyethylene alcohol hydration sponge are fully covered with the medical wound film; the negative pressure drainage device is a negative pressure drainage bag device and a negative pressure ball is independently arranged; and a drainage tube joint of the medical PVC bag is connected with a drainage joint of the negative pressure drainage bag device. The medical PVC bag works as a transition carrier for negative pressure drainage; multi-point contact is formed on the polyethylene alcohol hydration sponge, so comprehensive and thorough drainage can be obtained; the negative pressure ball of the negative pressure drainage tube bag device is independently arranged, so the negative pressure ball can be repeatedly utilized; and drainage smoothness can be further guaranteed.