33results about How to "Hinder circulation" patented technology

The invention provides a wireless electronic communication device, comprising a metal frame body and a gap structure; the metal frame body is provided with a first antenna and a second antenna, the first antenna and the second antenna are spaced by a first preset distance, and the first antenna and the second antenna are respectively provided with a feed structure; the gap structure is arranged between the first antenna and the second antenna, and the extension distance of the gap structure in the width direction of the metal frame body is smaller than the width of the metal frame body. According to the embodiment of the invention, the isolation degree of the antenna can be improved, the mutual influence between the antennas can be reduced, and the index of an envelope correlation coefficient can be improved, so that the channel capacity of multi-input multi-output is improved, the transmission rate is increased, and meanwhile, the gap structure can be multiplexed; and more antennas can be formed on the basis that no extra space is added, thereby further improving the overall competitiveness of the product and the wireless communication experience of users.

The invention discloses a preparation method of a short carbon fiber based electromagnetic shielding composite material. The preparation method comprises steps as follows: (1), short ES fibers and short carbon fibers in a certain proportion are put in a dispersion liquid sequentially according to required fibrofelt surface density and are dispersed and mixed, and a mixture is stirred by a stirrer and then left to stand; (2), a dispersed solution is poured into a paper machine and subjected to papermaking by a copper wire mesh on the paper machine, and then a short carbon fiber shielding felt layer obtained through papermaking is dried; (3), the dried short carbon fiber shielding felt layer is clamped between two insulating resin layers and subjected to hot pressing in a plate vulcanizing machine, and the short carbon fiber based electromagnetic shielding composite material is obtained. The invention further discloses the short carbon fiber based electromagnetic shielding composite material. The short carbon fiber based electromagnetic shielding composite material has the characteristics of adjustable shielding performance, ultrathin property, light weight and the like and has excellent anti-oxidation and anti-corrosion properties, the preparation method is simple and easy, the cost is low, the application is wide, and large-scale production is facilitated.

The invention discloses an integrated sewage intercepting well. The integrated sewage intercepting well comprises a shaft, wherein a primary sewage intercepting device is arranged in the shaft and comprises a sewage intercepting chamber, a smashing device is arranged in the sewage intercepting chamber, a primary filtering device is arranged at the bottom of the sewage intercepting chamber, the smashing device comprises a smashing driving device, a rotating rod and smashing blades, the smashing driving device drives the rotating rod to rotate, the smashing blades are arranged on the rotating rod, a sewage pipe is arranged on the shaft wall of the shaft, a secondary sewage intercepting device and a sludge removing device are arranged in the shaft, a sludge discharging opening is formed in the shaft wall of the shaft, and a sludge collecting box is arranged outside the shaft. The integrated sewage intercepting well has the effects of intercepting sewage on sunny days and directly drainingin rainy seasons, the sewage intercepting chamber is taken out in the flood season to directly drain rainstorm, the sewage intercepting chamber is installed in the period with small rainfall to perform graded sewage interception on sewage, the smashing device is used for smashing large-particle sewage contained in the sewage to prevent the primary filtering device from being blocked to hinder water circulation, and the sludge removing device is used for clearing the sludge retained in the sewage intercepting well.

The invention provides a composite reinforced segmental epidural catheter and a preparation method thereof. The composite reinforced segmental epidural catheter comprises a catheter head and a catheter body; a plurality of drug outlet holes are formed in an end of the catheter head in the peripheral direction of the tube head at intervals; the catheter body consists of an outer sleeve and an innersleeve inserted in the outer sleeve; the outer sleeve and the inner sleeve are made of high polymer materials; scale marks are arranged between the outer sleeve and the inner sleeve; and a spiral flat steel wire is inserted in the inner sleeve. On the basis of ensuring axial rigidity and high breaking power for facilitating intervention of the catheter, the spiral flat steel wire supports the body of the catheter, and thus, a anesthetist can accurately control an implanted position; and printing ink is stopped from being in contact with a human body by a composite technology, namely, after scales are printed, a biocompatible thermoplastic elastomer layer is added on the outer layer, by the high biocompatible segmental epidural catheter, the problems that the hardness of the catheter cannot be adjusted, harmful substances remain due to printing ink, and surfaces are not smooth after printing are solved, operation is facilitated, the adverse effects of the product to patients are reduced, and the comfort level of the patients is improved.

The invention discloses a preparation method of a self-cooled and hole-closing-resistant lithium ion battery diaphragm, and belongs to the technical field of the battery diaphragm. The slurry layer is arranged at one side end surface or two side end surfaces of a basement membrane, thereby obtaining the self-cooled and hole-closing-resistant lithium ion battery diaphragm after the drying; the slurry layer is the ceramic slurry or the erythritol modified ceramic slurry, the erythritol modified ceramic slurry is at least coated at one side end surface, and the specific method for preparing the erythritol modified ceramic slurry is disclosed. The preparation method disclosed by the invention provides the stable and efficient process of the self-cooled and hole-closing-resistant lithium ion battery diaphragm; the prepared erythritol modified ceramic slurry has low shrinkage and high security at the high temperature of the ceramic slurry.

The invention discloses a domestic wastewater environment-friendly treatment device and a using method thereof, and belongs to the technical field of wastewater treatment. The environment-friendly domestic wastewater treatment device comprises a tank body; the inner wall of the tank body is connected with a conical bottom plate and a fixing plate; a first cavity is formed between the conical bottom plate and the inner wall of the top of the tank body; a second cavity is formed between the fixing plate and the inner wall of the bottom of the tank body; a flow guide pipe is connected between thefirst cavity and the second cavity; the outer wall of the flow guide pipe is connected with a first valve; the outer wall of the first cavity is connected with a liquid inlet pipe and a dosing hole;and the outer wall of the second cavity is connected with a liquid outlet pipe. According to the domestic wastewater environment-friendly treatment device and the using method thereof of the invention, a fixing base is extruded through a pressing plate, so that large garbage in waste water is crushed, then the waste water in the large garbage is discharged, the efficient treatment of the waste water is improved; in the downward moving process of the pressing plate, a main rotating shaft rotates, the stirring efficiency of chemicals and the waste water is improved, the chemicals are fully stirred, and therefore the purification treatment effect of the waste water is greatly improved.

The invention discloses a circulating refrigerating and filtering system for machine tool cutting cooling liquid, and belongs to the field of machine tools. In the output process of the cutting cooling liquid, refrigerating and filtering balls and the cutting cooling liquid form reverse convection and are in contact with each other, heat exchange with the cooling liquid is realized, and cooling treatment to the cooling liquid is realized; meanwhile, in the convection process, the refrigerating and filtering balls also carry out filtering and adsorption treatment on cutting chips in the coolingliquid, and the cutting chips are intercepted in the refrigerating and filtering balls; and along with the heat exchange process, the temperature of the refrigerating and filtering balls is graduallyincreased, the interiors of the refrigerating and filtering balls deform, on one hand, the adsorbed cutting chips are subjected to compression control, secondary losses of the cutting chips are reduced, on the other hand, a cutting liquid flowing channel is enlarged, so that the cutting liquid flows smoothly, the refrigerating and filtering balls can be recycled conveniently, the cutting chips are cleaned away and refrigerated again, and continuous cooling and filtering treatment to the cutting cooling liquid is achieved through circulating backflow of the refrigerating and filtering balls.

The invention provides high-definition camera shooting remote monitoring equipment with a self-cleaning function, which comprises an outer cover, a base and a monitor, an inner ring is clamped on the inner wall of one side of the outer cover, an inclined plate is welded on the inner side of the inner ring, a scraper is arranged on one side of the inclined plate, the scraper is mounted on one side of the inclined plate through a rotating shaft, a counter weight is welded to one end of the scraper, the outer side of the rotating shaft is sleeved with a torsional spring, and an air duct is welded to the inner wall of the other side of the outer cover. According to the high-definition camera shooting remote monitoring equipment with the self-cleaning function, a monitor can be cleaned, the surface of the monitor is cleaned, the situation that the sight of the monitor is blocked by impurities is avoided, a monitoring picture is ensured to be clear, the scraper is prevented from blocking part of sight of the monitor, the monitoring picture is prevented from having dead angles, the integrity of the monitoring picture is guaranteed, impurities, flying catkins and the like are prevented from hindering air circulation, the wind speed needed by the scraper for cleaning the monitor is guaranteed, the cleaning effect is guaranteed, and the monitoring equipment is suitable for remote monitoring.

The invention relates to the technical field of food processing, in particular to a filtering device for efficient deep-frying equipment. The filtering device comprises a plurality of filtering containers in parallel, a filtering device arranged in each filtering container, a vacuum pump and a recovery container, wherein each filtering device comprises a multi-stage filtering net, and the filtering containers in parallel are connected with an oil inlet pipeline, an oil outlet pipeline, a recovery pipeline and a vacuumizing pipeline. The multi-stage filtering net can trap food oddments mixed todeep-frying oil in different filtering nets, the filtering capacity is improved, besides, the filtering nets can also be prevented from being blocked, after filtration is completed, the deep-frying oil adhered to the food oddments is converged into the recovery container under the action of pressure differences, and besides, the filtering nets can be cleaned to a certain extent. The filtering device is simple in structure, and can effectively prevent the filtering nets from being blocked. Besides, the labor force and the time cost for cleaning are greatly reduced, high recovery rate of the deep-frying oil can be realized, and fine production is facilitated.

The present invention provides a fruit drying device. The fruit drying device comprises fruit loading grids, horizontal partitioning plates and water draining box covers. Periphery side walls and bottom plates of eight fruit water draining boxes are all provided with a plurality of long-strip ventilation grooves in a run-through manner; a lifting and pulling handle is also supportedly welded on the side wall of the top end of each of the fruit water draining boxes; an air outlet groove is arranged in a periphery side wall of an air outlet pipe and presents a long-strip and arc shape; the waterdraining box cover is rotatably hingedly connected with the opening of the side part of the fruit water draining box; the fruit water draining box cover is also provided with a plurality of long-strip ventilation grooves in the run-through manner; and two pressing lock catches arranged symmetrically at the bottom position of the fruit water draining box are used to conduct locking and positioningof the water draining box cover. By arranging a novel air cylinder, an inclined slicing surface of the air cylinder can space, block and separate an annular dry air passage and guide the dry air intoan air outlet groove to be discharged, and thus ensures normal circular circulation of the dry air.

The present invention discloses a constant-temperature chicken raising trough, and relates to a feed trough. The constant-temperature chicken raising trough comprises a trough housing, an air intake pipeline and a steam generating apparatus; the trough housing has a bilayer structure; the inner layer of the the trough housing is a heating chamber; an air inlet and an air outlet are formed on the outer sidewall of the trough housing; the middle of the trough housing is downwardly sunken to form a discharge groove, and a semi-circular shaped groove is formed on the side wall of the trough housing; one end of the air intake pipeline is connected with the steam generating apparatus, and the other end is connected with the air inlet of the trough housing; a by-pass cooling apparatus is connected with the air intake pipeline; a reversing valve communicates with the cooling apparatus and the air intake pipeline is arranged on the cooling apparatus. According to the constant-temperature chicken raising trough, firstly, steam goes through the cooling apparatus by the reversing valve, then enters into the heating chamber, and lastly enters directly into the heating chamber, thereby completing the switchover of constant temperature and disinfection.

The invention discloses a smoking room and particularly relates to the technical field of smoke processing. The smoking room comprises a room body frame. The room body frame is internally provided with a cigarette ash platform assembly. One side of the room body frame is provided with a filtering system assembly. The room body frame is internally provided with a monitoring system assembly. According to the smoking room, cigarette ends are put into ashtrays and fall into a cigarette ash barrel, the cigarette ends autonomously quench because of oxygen deficit, smoke ascends and enters a smoke conveying pipe through vent holes, under work of a draught fan, negative pressure is formed in the filtering system assembly, the smoke is absorbed into a storage channel, through multistage filtering of a filter filtering cylinder, a second filtering cylinder and a third filtering cylinder, larger particles are filtered through a prefilter, peculiar smell in the smoke is adsorbed by an activated carbon filter screen, smaller particulars are filtered by an HEPA filter screen, finally clean air is obtained and exhausted through an exhaust channel, the filtering efficiency of poisonous gas of thesmoke is high, the smokeless purpose is achieved, peculiar smell is not overflowed, air is changed quickly, and a smoke room cannot be formed.

The invention provides an oil leakage preventing mechanism for a cloth supply table of a sewing machine capable of reliably preventing oil leakage. The oil leakage preventing mechanism comprises an oil scraping part, an oil scraping part support, a sealing plate, a sealing plate support and an oil return part, wherein the oil scraping part is composed of a connection frame, an upper oil scraping claw formed on the upper end of the connection frame and a lower oil scraping claw formed on the lower end of the connection frame, the distance between the upper oil scraping claw and the lower oil scraping claw allows the end part of the cloth supply table to pass through, the oil scraping part support is connected with a sewing machine shell, an installation notch is formed in the oil scraping part support, the oil scraping part is installed in the installation notch of the oil scraping part support, the sealing plate is stored in a storage groove of the sealing plate support, the sealing plate support is connected with the oil scraping part support, a cloth supply table through hole which can be used for the end part of the cloth supply table to pass through is formed in each of the groove walls of two sides of the sealing plate support and the sealing plate, the oil return part comprises an oil return chamber and an oil guide pipe connected with the oil return chamber, and the oil return chamber covers the lower ends of the oil scraping part support and the sealing plate support.

The invention relates to an intelligent first-aid mouth opener. The intelligent first-aid mouth opener comprises a handle and an elastic mouth opening bag; a guiding tube is formed in the handle, a suction wheel is coaxially installed in the guiding tube and engaged with an inner wheel of one corresponding one-way bearing, operating cylinders are distributed on the periphery of the guiding tube in parallel, and a pneumatic wheel is coaxially installed in each operating cylinder; pistons are arranged at the front ends of the operating cylinders in a sliding mode, and puncture needles are fixed to the pistons; the tip ends of the puncture needles face towards liquid storage cavities and partition membranes, and the tail ends of the puncture needles come out of the operating cylinders and are fixed to a pushing plate; through holes are formed in the rear ends of the operating cylinders and communicated with the mouth opening bag; a suction tube is arranged in the mouth opening bag in a penetrating mode, and the tube wall of the suction tube is connected with the mouth opening bag in an airtight mode. According to the mouth opener, the structure is original and unique, the mouth of a patient can be maintained open, the teeth of the patient are protected, damage to the mouth is reduced, and smooth breathing is guaranteed at the same time.

The invention discloses a cushion for preventing prostate from being extruded, the cushion comprises a backing plate, two sponge sitting plates are fixed on the backing plate, a groove is formed at anempty position which is between the two sponge sitting plates and is corresponding to the prostate, and the bottom and the periphery of the groove are fixed together to form a case with an upper opening. The cushion for preventing the prostate from being extruded can prevent the prostate from being extruded, also can achieves the health care effects of far-infrared physiotherapy and magnetic therapy on the prostate, thereby greatly reducing the occurrence of prostate diseases; meanwhile, the cushion has the advantages of simple structure and convenient use, can avoid blood circulation obstruction due to the extruded prostate, can prevent prostate hyperplasia and prostatitis, and is conducive to body health.

The invention discloses a long-line platform prefabricated part production line maintenance system, and mainly relates to the technical field of concrete prefabricated part production. The long-line platform prefabricated part production line maintenance system comprises a single mold platform and a steam source; a thermal insulation layer is arranged on the lower side of the single mold platform;a maintenance pipeline is arranged between the single mold platform and the thermal insulation layer; a temperature sensor is arranged on the maintenance pipeline; one end of a steam inlet main pipeis connected to the steam source; the other end of the steam inlet main pipe is connected with a steam inlet of the maintenance pipeline and a steam dispersing pipe through automatic on-off valves; asteam outlet of the maintenance pipeline is connected to a steam return main pipe through a check valve; and a steam return buffering bag is arranged at the tail end of the steam return main pipe andconnected to a drainage pool through a drain valve and an automatic intermittent steam exhaust valve. The steam inlet main pipe is connected to a water return main pipe through a steam inlet drain valve every a section of distance; and the steam return main pipe is connected to the water return main pipe through a steam return drain valve every a section of distance. The long-line platform prefabricated part production line maintenance system has the advantages that single control over the single mold platform of a long-line mold platform can be achieved, independent maintenance is achieved, resource waste is avoided, and the situation that the whole line is shut down if one device breaks down is avoided.

The invention relates to an intelligent emergency opening device. The intelligent emergency opening device includes a handle and an elastic opening bag; a diversion tube is opened inside the handle, and a suction wheel is coaxially installed in the diversion tube. The wheel is engaged with the inner wheel of a one-way bearing, operating cylinders are distributed in parallel on the outer circumference of the guide tube, and a pneumatic wheel is installed coaxially in each of the operating cylinders; a piston is slidably arranged at the front end of the operating cylinder, A puncture needle is fixed on the piston; the tip of the puncture needle faces the liquid storage chamber and the separation membrane, and the tail end of the puncture needle is exposed to the operation cylinder and fixed on the push plate; a vent hole is opened at the rear end of the operation cylinder , the vent hole is communicated with the opening bag; a suction tube is also arranged through the opening bag, and the tube wall of the suction tube and the opening bag are airtightly connected; the opening device has a novel and unique structure, which can keep the patient The mouth is opened, while protecting the patient's teeth, reducing oral injury, and ensuring smooth breathing.

The invention discloses anorectal clinical postoperative analgesic and hemostatic equipment. The equipment structurally comprises a stirring plate, an operation box, a hook body, a supporting plate and a driving block, wherein the driving block is arranged on the stirring plate and movably connected with the stirring plate; the stirring plate is arranged on the operation box and is in clearance fit with the operation box; the hook body is arranged on the supporting plate; the supporting plate is movably clamped with the hook body; the operation box is provided with a box body, a control valve, an operator, a stabilizer, a gas guide body, a pump body and a stirring body; and the stirring body is arranged in the box body. The anorectal clinical postoperative analgesic and hemostatic equipment can an application tube with the length matched with a required extending depth according to the required extending extending depth for the patient focus and assemble the application tube, the length of the application tube does not need to be adjusted by a winding mode due to the assembling length selectivity of the application tube, so that extrusion between the application tube body and a tube body can be avoided, and circulation of a liquid medicine in the application tube is prevented from being blocked due to the flattened tube body of the application tube.

The invention discloses a fireproofing insulation board and relates to a polyphenyl or polyethylene fireproof insulation board. The fireproofing insulation board is designed to mainly solve the problem that the current polyphenyl insulation board and the current polyethylene insulation board have fire hazards. The fireproofing insulation board comprises a polyphenyl insulation board or polyethylene insulation board, wherein a plurality of parallel slot lines or a plurality of criss-cross slot lines are arranged on one side or two sides of the polyphenyl insulation board or polyethylene insulation board, and an inflaming retarding screen is arranged in each slot line. A plurality of parallel slot lines or a plurality of criss-cross slot lines are arranged on one sides or two sides of two polyphenyl insulation boards or polyethylene insulation boards, and the inflaming retarding screens are arranged in the slot lines. A plurality of middle layers are arranged between the two polyphenyl insulation boards or polyethylene insulation boards, of which the slot lines are internally provided with the inflaming retarding screens, and an inflaming retarding isolated layer is arranged between every two middle layers. The fireproofing insulation board has the advantage that no fire hazard exists.

The invention discloses an underground water sampling device for hydrogeology; the device is structurally provided with a sampling cylinder, a connecting column, a pressure gauge and a handle, the connecting column is fixedly connected to one side end of the sampling cylinder in an embedded mode and internally communicated with the sampling cylinder, the pressure gauge is arranged at one side end of the connecting column, and the handle is fixedly connected to one side of the lower end of the pressure gauge. A rolling ball rolls in a grooved rail; a magnetic ball is assisted in moving at the upper end and lower end under the push; a peripheral frame can be obliquely placed from the horizontal direction under the telescopic cooperation of supporting feet, the supporting feet at the two side ends do relative telescopic motion, the tail end of the peripheral frame is ejected, and then the front end and the rear end of a deformation block are extruded differently, so that the deformation block is subjected to toughness deformation better; a cylindrical cavity-shaped diameter opening of a water taking device tends to change in a conical cavity shape, so that the water taking device can extend into the ground surface gap due to the change of the diameter opening width, and the equipment can better adapt to different sampling points when personnel collect surface water outdoors.

The invention discloses a heat dissipation lamp housing and a manufacturing method thereof, and a lamp structure. The heat dissipation lamp housing comprises a conduction part and a cylinder wall, wherein the conduction part is used for supporting a light source assembly in a lamp to enable heat energy generated by the light source assembly to be firstly flow to the conduction part, and then the heat energy flows to the cylinder wall through the conduction part, and is taken away by air. The heat dissipation lamp housing is integrally formed by using a extension engineering method, with the integrally formed structure, on one hand, the heat energy can flow smooth in the heat dissipation lamp housing, so that the heat radiating efficiency is excellent, and on the other hand, the numbers of parts required in the heat dissipation lamp housing can be reduced, so that product lines can be reduced and manufacture processes can be simplified. With the application of the heat dissipation lamp housing to the light emitting diode lamp structure, heat energy generated by a light emitting diode can be effectively emitted, and the service life of the lamp can be prolonged.

The invention belongs to the technical field of welding processes, and particularly relates to a reliable welding method for a direct insertion type metal packaging circuit module. The method comprises the following steps of 1, before welding, placing a heat conduction insulation pad between the direct insertion type metal packaging circuit module and a printed circuit board; 2, welding circuit module tube legs; and 3, using a 10mm long tin wire for first welding of a lead, and after the redundant part of the lead is cut, using a 10mm long tin wire additionally during remelting welding. The welding quality can be greatly improved, and defects in the prior art are effectively avoided.

The invention discloses an ink-jet photo machine ink path pressure self-balancing nozzle ink loading device and its use method, relating to the technical field of ink-jet printers; comprising an ink supply chamber and an ink supply chamber connected to the ink supply chamber at one end for supplying ink Ink transmission tube, and the other end of the ink transmission tube is connected to a nozzle box and extends into the interior of the nozzle box. The bottom of the nozzle box is provided with a nozzle, and a through hole is opened on the upper cover or the outer wall of the nozzle box, and the through hole The hole is filled with elastic body; the beneficial effect of the present invention is: compared with the traditional method of pumping ink, the present invention will not cause the ink to be broken during continuous printing due to the difference in operation, and the ink in the ink supply chamber directly enters from the ink tube Inside the nozzle, the operation does not touch the ink and there is no ink pollution. The pressure of the ink system is adaptively balanced to the best state. The operation is simple and easy to complete in one step. The effect will not vary from person to person. The effect caused by ink pumping method varies from person to person.

The invention discloses a high-binding force electroplating equipment and a method for using the same, belonging to the field of electroplating. A high-binding electroplating equipment includes a choke case and an anode. The plate and the sealing plate are fixedly connected with a jig, and the anode is clamped at the lower end of the jig. In this scheme, a choke shell is placed on the outside of the anode to prevent the agitation from affecting the settlement of solid impurities. The double-layer filter improves the filtering effect of solid impurities. , to prevent impurities from moving to the plated parts and cause the coating to be rough, loose, porous, and effectively improve the bonding force between the coating and the anode. The filter screen is deformed and shaken by the agitation of the gas to the plating solution, and the impurities adhered to the filter screen are removed. It realizes self-cleaning and effectively improves the filtering effect. The gas release control part is used to prevent the electroplating solution from flowing backward into the vent tube, and the elastic force and gas compressibility are used to realize self-closing, which is convenient for the gas to enter.

The invention belongs to the technical field of welding processes, and particularly relates to a reliable welding method for a direct insertion type metal packaging circuit module. The method comprises the following steps of 1, before welding, placing a heat conduction insulation pad between the direct insertion type metal packaging circuit module and a printed circuit board; 2, welding circuit module tube legs; and 3, using a 10mm long tin wire for first welding of a lead, and after the redundant part of the lead is cut, using a 10mm long tin wire additionally during remelting welding. The welding quality can be greatly improved, and defects in the prior art are effectively avoided.

The invention relates to the field of buildings, in particular to a thermal insulation material composite additive and application thereof. The composite additive comprises the following components: magnesium oxide, MgSO4.7H2O, fly ash, aluminum hydroxide, a modifier and a mixed additive. The composite additive is applied to preparation of the non-combustible heat-preservation fireproof plate, specifically, a polystyrene foaming plate serves as a base material, and the composite additive is injected into the polystyrene foaming plate under the vacuum condition to prepare the non-combustible heat-preservation fireproof plate. The non-combustible heat-preservation fireproof plate prepared from a composite additive is low in density, has a heat conductivity coefficient of 0.0415-0.0418 (w / m.k) and a combustion grade of grade A, has the characteristic of excellent comprehensive performance, is an ideal external wall heat preservation material, is simple and convenient to install and construct and high in cost performance, is pollution-free and emission-free in the use process, and meets the environmental protection requirements.

The invention discloses a courtyard rainwater collection and utilization system and method. The system comprises a water collection system, an initial rainwater collection system, a precipitation system, a filtering system, a water storage system and a central controller. The water collection system comprises a water collection tank and a first water level sensor, and a third valve is arranged at the bottom of the water collection tank. The initial rainwater collection system comprises an initial water storage tank which is connected with the third valve through a drainage pipe, a fourth valve is arranged in the initial water storage tank and divides the initial water storage tank into an upper water storage tank and a lower water storage tank, a second water level sensor is arranged in the lower water storage tank, a fifth valve is further arranged at the bottom of the lower water storage tank, and the fifth valve is connected with the filtering system through a drain pipe. The water storage system comprises a reservoir and a third water level sensor. Initial rainwater is treated according to actual conditions, courtyard rainwater is collected and utilized to the maximum extent, the rainwater in the reservoir is used for cleaning a primary screening device, and accumulated silt and impurities are prevented from hindering circulation of the rainwater.

The invention discloses a full-automatic smoke exhausting and filtering system for minimally invasive surgery, which relates to the field of minimally invasive surgery, and comprises a host, a filter and a negative pressure suction pump, and further comprises a host, a display screen is fixedly arranged at the front end of the host, a button, a switch and a damping frame are arranged on the host on the same side of the display screen, and a pump mounting position is arranged on one side, far away from the display screen, of the host; a negative pressure suction pump is fixedly mounted in the pump mounting position, the damping frame is fixedly arranged between the negative pressure suction pump and the pump mounting position, the cleaning piece is movably mounted in the filter on one side where gas is sucked, a filtering layer is fixedly mounted in the filter, and the cleaning piece is arranged to be tightly attached to the filtering layer. Tissue fragments left after smoke filtration on the surface of the filtering layer are cleaned, the situation that the surface of the filtering layer hinders smoke circulation and weakens the filtering effect of the filtering layer is prevented, gas pressure in the abdominal cavity of a patient is kept dynamically balanced and stable, harm to medical workers is avoided, and the safety of an operation is improved.