397results about How to "Reduce the probability of clogging" patented technology

The invention relates to a solid and oil removal method and device for MTO (methanol to olefin) / MTP (methanol to propylene) chilled water and washed water. The method disclosed by the invention mainly comprises the following steps of carrying out ultrafiltration membrane separation on MTO / MTP chilled water, feeding an ultrafiltration membrane concentrated solution into a three-phase cyclone-separator separation system, and recovering a catalyst and oil; cooling ultrafiltration membrane permeated liquid, and feeding the obtained liquid back to a chilled water system to cyclically reuse; carrying out ultrafiltration membrane separation on MTO / MTP washed water, feeding an ultrafiltration membrane concentrated solution into the three-phase cyclone-separator separation system, and recovering a catalyst and oil; and cooling ultrafiltration membrane permeated liquid and feeding the obtained liquid back to a washed water system to cyclically reuse. The invention also provides a solid and oil removal device for MTO / MTP chilled water and washed water.

The invention provides a leaching tank having an adjustable double shaft stirring device. The leaching tank comprises a tank body with the bottom provided with a residue discharging hole, a tank cover, a stirring shaft, stirring paddles and driving mechanisms, the stirring shaft comprises an internal shaft and an external shaft having a common axis, the lower end of the internal shaft is provided with an auxiliary stirring paddle, the lower end of the external shaft is provided with a main stirring paddle, the driving mechanism of the internal shaft is a first motor, the driving mechanism of the external shaft comprises a second motor, a small gear and a large gear, the small gear is connected with the large gear, the large gear is sleeved outside the external shaft, the small gear is engaged with the large gear, the outside of the external shaft is provided with a boss, and the external s haft is arranged on the tank cover through the boss. The stirring device comprises independent work double shaft, and the rotating directions and the rotating speeds of the shafts can be independently set as needed in order to guarantee the full stirring of a slurry.

The invention discloses a crushing device for recycled concrete production. The device comprises a feeding box and a processing box, the bottom of the feeding box communicates with the left side at the top of the processing box, and a first crushing roller set is rotationally connected between the front side and the rear side of an inner cavity of the processing box through bearings. A conveying plate is rotationally connected to the top of the left side of the inner cavity of the processing box through a rotating block, and a transverse plate is fixedly connected to the position, located below the conveying plate, at the left side of the inner cavity of the processing box. The crushing device for recycled concrete production relates to the recycled concrete production technical field, after the preliminary crushing, the waste concrete is directly subjected to spray washing treatment, and the impurities are screened out, so that the treatment capacity of the device on the waste concrete can be reduced, the gaps on the surface of the waste concrete can be looser, the crushing is facilitated, and then the crushing treatment is conducted, and accordingly the crushing effect of the device on the waste concrete can be guaranteed, and the later-period reuse machining quality is guaranteed.

The invention discloses an auxiliary traction head of a rolling type cylindrical power cable threading apparatus. The auxiliary traction head comprises a cylinder, and a first fixing plate and a second fixing plate are arranged on the two sides of the interior of the cylinder correspondingly. A first open hole and a second open hole are formed in the middle of the first fixing plate and the middleof the second fixing plate in a penetrating mode correspondingly. A fixing sleeve corresponding to the second open hole in position is fixedly connected to the side wall of the second fixing plate, and a traction head is arranged in the second open hole. A cable connecting ring is fixedly connected to the end, facing the interior of the cylinder, of the traction head, and a traction wire is fixedly connected to the end, facing the exterior of the cylinder, of the traction head. A limiting sleeve is connected to the fixing sleeve in a threaded sleeving mode. A cleaning mechanism located on theouter side of the second fixing plate is arranged in the cylinder. According to the invention, cables with different diameters and thicknesses can be quickly and firmly connected, the use is more convenient, the use applicability is improved, the working efficiency is improved, the damage of sundries to the cable skin is effectively prevented, and the working quality is improved.

The invention discloses a processing method of landfill leachate film concentrated solution. The processing method comprises the following steps of: (1) softening the landfill leachate film concentrated solution and then carrying out micro-filtration, to obtain trapped fluid and penetrating fluid; and (2) filtering the penetrating fluid by a DTRO (disk tubular reverse osmosis) membrane and then discharging directly; wherein the softening process comprises the following steps of: (a) adding calcium hydroxide into the landfill leachate film concentrated solution, adjusting pH value to 10-10.5; (b) adding sodium hydroxide and magnesium salt, adjusting the pH value to 11-12; and (c) settling, carrying out solid-liquid separation, carrying out plate-frame pressure filtration on the solid phase, and returning the filtrate to the step (1); adding a precipitant into the liquid phase, controlling the content of calcium and magnesium ions to be less than 20mg / L, and controlling the content of soluble silicon dioxide to be less than 10mg / L, and then carrying out micro-filtration. By utilizing the method, the content of heavy metal ion, calcium and magnesium ions in the concentrated solution can be reduced furthest, the scaling problem in the subsequent film system is controlled effectively, and therefore the recovering efficiency of the landfill leachate film concentrated solution is improved.

The invention discloses Li7La3Zr2O12 ion conductor ceramic fiber. The material has the chemical composition of Li7La3Zr2O12, has the ion conductor ceramic fiber length of 1-2.5 mu m, the diameter of 80-120 nm and the lithium ion conductivity of 1.5*10<-4> S / cm-6*10<-3> S / cm. The invention further provides a method for preparing the ion conductor ceramic fiber. Lithium carbonate, lanthanum oxide, zirconyl nitrate, a nitric acid solution and absolute ethyl alcohol are mixed, heated and then mixed with citric acid and ethylene glycol, and the mixture is stirred at the constant temperature, and precursor sol is obtained; spinning sol is obtained by mixing a water-soluble polymer and the obtained precursor sol, spinning and calcination are performed sequentially, and ion conductor ceramic fiber with stable morphology and size is obtained. The method can improve the lithium ion conductivity significantly, adopts a simple process, is low in cost, has low requirements for equipment and environment and is suitable for industrial application.

The invention discloses a dual-header dual-roller high-clearance rice harvesting machine which comprises a walking power system provided with a hydraulic continuously variable transmission and an engine, a high-clearance base disc provided with a walking device, a dual-roller cleaning assembly arranged on the high-clearance base disc, a dual ear collecting header located at the front end of the dual-roller cleaning assembly, two scraper-type straw conveying devices located at left and right straw outlets and installed on a high-clearance base disc rack, a driving cab and a control console located at the upper end of the engine, a pair of grain elevators arranged on the two sides of the driving cab and the control console, and a dual-layer lower cutting tool arranged below a shell of the dual ear collecting header. According to the dual-header dual-roller high-clearance rice harvesting machine, the operation height of the dual-layer lower cutting tool can be adjusted, the harvesting machine is applicable to the crop harvesting operation with the requirement for the stubble height, only ear heads are cut down, the working efficiency can be effectively improved, the threshing and cleaning power consumption are lowered, discharged crushed straw is laid on a caterpillar band to be ground, the phenomenon that straw covers stubble is avoided, and the harvesting machine is applicable to common rice harvesting operation.

The invention relates to a low-emission static oxygen-control biologically-enhanced humification composting method. The method comprises the following steps: respectively crushing organic wastes intoparticles with the particle size of less than 5 cm; uniformly mixing and stirring according to a weight ratio; adding a biologically-enhanced composite microbial agent accounting for 0.1-0.5% of the total amount of the mixture and allowing the water content of the organic waste stock to be 60-65%, the carbon-nitrogen ratio to be 23-30, and the volume weight to be 700-950 kg / m<3> to obtain a composting raw material. Air with a supply amount of 0.40-0.45 m<3> / h / m<3>, air with a supply amount of 0.28-0.38 m<3> / h / m<3> and air with a supply amount of 0.13-0.26 m<3> / h / m<3> are respectively providedthrough high-pressure aeration pipes in the three stages of compost temperature rise, high temperature and temperature reduction to fully decompose organic matters; and after fermentation is completed, the water content of a finished product fertilizer is 33-42%, the volume weight is reduced to 400-650 kg / m<3>, the volume of a pile body is reduced by 30-50%, and meanwhile, emission of methane, nitrous oxide, ammonia gas and hydrogen sulfide is reduced.

This invention involves one maunfacturing method of multifunctional, highly active and complex dope of engine. Its main characteristic is that this dope consists of complex polar solvent, complex lustration dispersant, complex corrosion inhibitor, lubricant, demulsifier and lacquer solvent. This invention concerns the effects of different olefinic contents in crude oil, fuel oil has complete burning process and high fuel calorific efficiency in the engine, and simultaneously it concerns synergistic effects among the dope components, in order that little addition of dope (about 0.01%) greatly strengthen the power and reduce emission pollution.

The invention discloses a supercritical fuel oil heating device in a supercritical oil bath type. With supercritical oil bath heating and flowing heat exchange in a spiral pipe as a basis, a sleeve type structure is adopted, and supercritical fluid in different temperatures and pressures can be continuously and stably provided for a supercritical jet test of fluid effectively. By means of the supercritical oil bath heating, generation of a coking and cracking reaction in the fuel oil heating process can be effectively avoided, and generation of impurities is inhibited. The spiral pipe is used as a flowing path, and the heat flux and the heat exchange efficiency can be effectively improved, so that the problem that the heating temperature of an existing heater is not uniform can be solved. Two stages of heating manners are integrated, and the heat preserving performance and the heat efficiency of the device are improved. Due to the gas circuit design, zero pressure difference among the spiral pipe, a pre-heating cavity and an oil bath cavity is achieved, the weight and the cost of the device are reduced, and the heat exchange capacity is also improved. The supercritical fuel oil heating device in the supercritical oil bath type is compact in structure and convenient to use, meanwhile, the supercritical fuel oil heating device in the supercritical oil bath type is also applicable to subcritical, transcritical and supercritical tests of gas, liquid and various fluid, and has quite high adaptability.

The invention discloses an interconnection method of Internet of Things intelligent household electrical appliances and an intelligent household electrical appliance. The method comprises following steps of determining own device property after an intelligent household electrical appliance is electrified; communicating with a center node device through a power line when the device property is an ordinary device; carrying out network connection when the device property is the center node device; managing the ordinary devices in a power line system; and providing a data network forwarding platform for the ordinary devices. According to the method provided by the invention, working such as network configuration, device identification and network data transmission can be carried out on the household electrical appliances in a household Internet of Things system without manpower.

The invention discloses a composite material for manufacturing small-diameter artificial vascular grafts and a manufacturing method for the composite material. The composite material is prepared from carboxyl bacterial cellulose and fibroin, wherein the fibroin and the carboxyl bacterial cellulose are compounded in a cross-linking manner through a cross-linking agent to form the composite material. According to the composite material disclosed by the invention, the carboxyl bacterial cellulose and the fibroin are compounded in the cross-linking manner through the cross-linking agent, so that the blood compatibility of the composite material is improved; the elasticity and the surface performance of the composite material are improved; the problems that the small-diameter artificial vascular grafts are relatively poor in blood compatibility and relatively high in plugging rate are solved; and a foundation is laid for research and application of the small-diameter artificial vascular grafts.

The invention discloses an adsorption-deoiling water tank. The adsorption-deoiling water tank is applied to a deep treatment system of industrial oily wastewater, is connected between oil-water separating equipment and filtering equipment in series and is used for strengthening a deoiling effect; the adsorption-deoiling water tank is divided into two grids which are used in series, i.e., an oil and water separating chamber and a clear water chamber; a pocket is arranged on the water surface of the oil and water separating chamber in a floating manner, and efficient oil absorbent cotton, whichonly adsorbs fats and oils and does not absorb water, is filled in the pocket; the oil and water separating chamber communicates with the clear water chamber; and water passing through the oil-water separating equipment enters the oil and water separating chamber firstly and then enters the clear water chamber through a water through hole, and a water absorption pipe of a filter pump absorbs waterfrom the deoiled clear water chamber in a subsequent treatment process. The adsorption-deoiling water tank is simple and practical and is free of secondary pollution; and after deoiling by the adsorption-deoiling water tank, the rate of deoiling of yielding water is close to 100%, and thus, the probability of blockage to subsequent deep-treatment filtering equipment can be lowered greatly.

The invention discloses a control device for reducing escaped ammonia in a denitration process. The control device comprises an instant inlet ammonia spraying and distribution control device, wherein the instant inlet ammonia spraying and distribution control device is composed of a main pipe, a plurality of branch pipes, ammonia spraying electric valves, flue pipes, a plurality of ammonia spraying valves, and NH and NOX detectors, wherein one end of each branch pipe is communicated onto the main pipe; the ammonia spraying electric valves are arranged on the plurality of branch pipes respectively; the flue pipes are communicated with the other ends of the plurality of branch pipes; the ammonia spraying valves are arranged on side surfaces of the flue pipes and two opposite end faces of the flue pipes; the NH and NOX detectors are arranged on the plurality of ammonia spraying valves. The control device disclosed by the invention has the beneficial effects of simple structure and high practicability.

The invention discloses a composite material raw material screening device with an anti-clogging function. A storing box is arranged on the upper part of a device body.A separating plate is arranged at the bottom of the storing box, and a feeding hopper is arranged on the right side of the upper part of the storing box. A driving motor is arranged at the center of the upper part of the device bodyand is connected with apowersupply and a switch through conducting wires. A driving shaft is in rotary connection with the lower part of the driving motor, and the driving shaft penetrates through the upper part of the device bodyand is in rotary connection with the upper part of the device body through a bearing. A plurality of stirring rods are arranged on the surface of the driving shaft at equal intervals in the circumferential direction, and the lower part of the driving shaft penetrates through the center of the separating plate. According to the composite material raw material screening device,intermittent feeding is achieved by a rotary turn-table driving unclogging pipes to communicate with sleeve pipes in a reciprocating mode, and meanwhile,the turn-table and an extensible rodare driven by gravity of materials to move up and downin a reciprocating mode; and the turn-tablemoving up and downin a reciprocating mode drives brushing plates through connecting rods to move left andrightin a reciprocating mode to brush screening holes in a screening plate. The condition that the screening holes are clogged with the materials is avoided, the rate of clogging of the screening holes in the screening plate is greatly reduced, and screening efficiency is improved.

The utility model relates to a leachate suspended substance removal device of a garbage power plant, which relates to the field of environmental protection power generation equipment. It includes a box body and a box cover connected to the upper end of the box body. The box body is provided with an obliquely arranged screen to divide the box body into an upper cavity and a lower cavity. The inlet, the lower part of the upper cavity located at the lower end of the screen is provided with a slag outlet, and the lower part of the lower cavity is provided with a water outlet. The leachate enters the box through the leachate inlet, and the leachate has a flushing effect on the screen, which can flush the filter residue to the slag discharge port and reduce the clogging rate of the screen. The leachate flows into the adjustment tank by itself, and there is basically no stagnant water on the screen, which is convenient for drying and cleaning the filter residue.

The invention discloses a gasifier of an entrained-flow bed with a single nozzle. The gasifier is characterized by comprising a gasifier body, wherein a chilling conversion chamber is arranged below the gasifier body, and a washing deslagging chamber is arranged below the chilling conversion chamber. The gasifier body, the chilling conversion chamber and the washing deslagging chamber are coaxially arranged. The gasifier body is internally provided with a technical nozzle chamber. The chilling conversion chamber is internally provided with a chilling ring. The gasifier provided by the invention has the characteristics of easiness in amplified application in a large scale, stable and reliable operation, environmental friendliness, energy conservation and the like.

The invention discloses a cutting waste recovery device for a numerically-controlled machine tool. The cutting waste recovery device comprises a machine tool base, wherein a base cavity with an upwardopening is formed in the machine tool base; a collecting device is arranged at the opening of the base cavity; a vibration device is arranged in a diversion cavity and is located at the lower side ofthe collecting device; a waste liquid recovery device is arranged in the base cavity, is located at the lower side of the diversion cavity and is used for recycling cutting waste liquid; a power device is arranged in the base cavity, is located at the right side of the diversion cavity and is used for providing power for the whole device; and a compression device is arranged in the base cavity, is located at the right side of the power device and is used for compressing cutting waste. A vibration mechanism is used for driving a recovery tank to vibrate up and down, so that the blocking probability of a filter screen of the recovery tank is reduced, and thus, the maintenance frequency of the recovery device is reduced. The cutting waste recovery device prevents the normal processing of themachine tool from being affected through the recovery tank structure arranged on the machine tool base, and can realize the automatic recovery processing of the processing waste.

The invention discloses a slurry loop circulation system for slurry shield. The slurry loop circulation system comprises an excavation bin and an air cushion bin, a slurry inlet pump is connected witha main slurry inlet pipeline, the main slurry inlet pipeline communicates with the excavation bin through a plurality of first shunt slurry inlet pipelines, and the lower side of the air cushion bincommunicates with the main slurry inlet pipeline through a plurality of second shunt slurry inlet pipelines; the lower side of the excavation bin communicates with a main slurry discharging pipeline through first shunt slurry discharging pipelines, and the lower side of the air cushion bin communicates with the main slurry discharging pipeline through second shunt slurry discharging pipelines; a first flushing system is connected to the position between a cutterhead panel and the main slurry inlet pipeline, the tops of a stirrer, a slurry door and the excavation bin are connected with a secondflushing system, and the main slurry inlet pipeline communicates with the main slurry discharging pipeline through a by-pass pipeline; and an output end opening of the slurry inlet pump and an inputend opening of a slurry discharging pump are provided with sensors correspondingly, a ball valve and the sensors are connected with a control system, by optimizing the slurry circulation mode, standbypipelines are additionally arranged to improve the treatment efficiency of slurry, and the plugging probability of a slurry outlet is reduced.

The invention discloses an SCR denitrification process and device for coping with high dust flue gas, including a boiler economizer, a dust removal device and an SCR reactor, the flue gas outlet of the boiler economizer passes through the dust removal device and the SCR reactor inlet The flue is connected; the present invention adopts a low-dust arrangement method, and the flue gas drawn from the boiler economizer is subjected to dust removal treatment before entering the SCR reactor, which can reduce the amount of catalyst, reduce the dust content in the flue gas, and especially remove The large particles of dust in the flue gas reduce the blockage of the denitrification catalyst by the dust in the flue gas, and the poisoning of the catalyst by harmful substances in the dust, which improves the service life of the catalyst.

The invention discloses a low-orbit heterogeneous satellite network routing method and system. The method comprises the following steps: initializing a data packet transmitted in a low-orbit heterogeneous satellite network system model; obtaining packet initialization status, circularly traversing the path according to the initial state of the data packet to obtain an optimal routing path; performing congestion by utilizing reinforcement learning to improve the path transmission efficiency, so that the purpose of advantage complementation between heterogeneous satellites is achieved; and meanwhile, taking the balanced packet loss rate and the end-to-end time delay as targets, so that the problem of satellite failure is solved through the mobile Agent; and therefore, routing calculation isfurther assisted, the low communication delay advantage of the low-earth-orbit satellite can be fully utilized, and resource integration among different constellations can be realized, so that the problems of low single-layer satellite communication coverage capability and poor performance are solved, the proposed scheme conforms to the future development trend, the balance of time delay and packet loss performance is remarkably improved, and the method is suitable for increasing communication requirements.

The invention relates to the technical field of new energy and discloses new energy power battery fixing device comprising a placement box. A sealing strip is arranged at the top of the placement box,a clamping device is arranged in the placement box, a cooling fan is fixedly installed on the surface of the placement box, a sealing device is arranged on the surface of the cooling fan, and a threading hole is formed in the surface of the placement box. According to the new energy power battery fixing device, the top of the fixing device is sealed through the sealing strip; dust of the coolingfan is filtered through the filter screen; when the cooling fan rotates, a cleaning brush is driven to rotate so as to clean dust on the surface of the filter screen; the fixing device is convenient to seal, dust on the surface of the filter screen is convenient to clean, the probability of blockage of the filter screen is reduced, accumulation of dust on the surface of the filter screen is reduced, the heat dissipation effect is improved, the sealing performance of the fixing device is improved, and the content of dust in the fixing device is reduced.

The invention discloses a water pipe purification device with a self-repairing function, belongs to the field of water pipes, and provides the water pipe purification device with the self-repairing function. According to the scheme, water flow impacts transmission blades on the inner wall of a connecting sealing pipe to increase the contact area between water and the inner wall of the connecting sealing pipe, so that an activated carbon adsorption net adsorbs impurities in water; water purifying balls vibrate in the purification device through glass fibers, metal ions in water are absorbed, and water quality purification effect is improved; on the other hand, when a sealing layer is damaged, the water penetrates through crack repairing balls and is mixed and reacted with an effervescent disintegrant in the crack repairing balls to generate gas and heat, a repairing glue flows out to the gaps between the connecting sealing pipe and the sealing layer and repairs the gaps in the outer endof the sealing layer, water absorption fiber rods adsorb water leaked from release holes, water is guided into a sealing detection ring through a water guide rod to change color, and then the water leakage condition is observed.

The invention provides a gridding firmware upgrading method and device, electronic equipment and a storage medium. The method comprises the following steps: dividing regional grids according to obtained base station related data; obtaining a firmware upgrading strategy matched with the regional grid according to equipment related information of a plurality of pieces of to-be-upgraded equipment inthe regional grid; and controlling the to-be-upgraded equipment in the regional grid to perform firmware upgrading according to the firmware upgrading strategy. According to the embodiment of the invention, by realizing gridded firmware upgrading control, the probability of network congestion in the batch upgrading process of the equipment is reduced, and the effect of improving the success rate of batch upgrading is achieved.

The invention relates to a water recycling treatment technology, and particularly relates to a method for solving membrane bio-reactor (MBR) membrane blocking and a composite MBR membrane bio-reaction system. A sewage treatment tank of a water treatment system adopting the MBR membrane and activated sludge attached with microorganisms is partitioned into at least two treatment regions; an MBR membrane is arranged in one treatment region; the other treatment region is a pretreatment region; the activated sludge attached with the microorganisms is arranged into the pretreatment region. The system comprises a waste water tank, a sewage treatment tank, a hair dreg collector, and an MBR membrane, wherein the sewage treatment tank is communicated with the waste water tank through a drain pipe; the hair dreg collector is arranged on the drain pipe; the MBR membrane is arranged on the sewage treatment tank; the sewage treatment tank comprises an MBR membrane pretreatment tank and a pretreatment region, which are independent. The blocking probability of the MBR membrane is reduced, the service life of the MBR membrane is prolonged, and the use cost is reduced.

The invention discloses quantative packaging equipment for bulk traditional Chinese medicine decoction pieces. The equipment comprises a quantifying box, a quantifying cavity opened upward is formed in the quantifying box, a storage box is fixedly connected to the upper end surface of the quantifying cavity, a quantifying cavity opened rightward is formed in the storage box, a storage cavity formed in the upper side of the quantifying cavity and communicating to the quantifying cavity is formed in the storage box, a storage device for storing and conveying the traditional Chinese medicine decoction pieces is arranged in the storage cavity, a quantative injection device for weighing and conveying the traditional Chinese medicine decoction pieces to medicine bottles is arranged in the quantifying cavity, a recovery device located on the left side of the quantative injection device is arranged in the quantifying cavity, a sealing box is fixedly connected to the back end surface of the storage box, and a sealing device is arranged in the sealing box. The quantative packaging equipment can automatically package the traditional Chinese medicine decoction pieces quantatively, has a relatively precise quantifying function and reduces the plugging probability of a discharge port.

A novel liquid distributor is composed of two system layers. Four main distributing pipes are arranged at a water inlet in the center of each system layer and are evenly distributed, distributing branch pipes are arranged in each main distributing pipe, all the distributing branch pipes are arrayed in an eight-branch petal mode, improved three-splashing external thread nozzles are arranged on each distributing branch pipe, and the projection of the four main distributing pipes on one system layer and the projection of the four main distributing pipes on the other system layer are staggered by 45 degrees. Absorption liquid forms a three-layer umbrella-shaped water distribution surface through the improved three-splashing external thread nozzles, the nozzles are uniformly distributed, and thus the interior of a whole absorption tower is completely and uniformly covered with the three-layer umbrella-shaped water distribution surface, so that a gas-liquid absorption surface with the largest area is achieved, water distribution uniformity is improved, the problem that the absorption efficiency is low due to gas-liquid contact nonuniformity caused by unit load changing, circulating water amount changing and other conditions is relieved, and the operating stability of a whole system is improved.

The invention discloses a blood collection device used during invasive artery monitoring. The blood collection device comprises an arterial duct, a pressure connection tube, a pressure sensor, a continuous washing system and an electronic monitor, wherein the pressure connection tube is filled with liquid and provided with a switch. The blood collection device is characterized in that the pressure connection tube is provided with a blood collection plug, a three-way plug valve and an injection syringe, the blood collection plug is arranged on the part, on the root of a palm of a patient, of the pressure connection tube, the three-way plug valve is arranged between the blood collection plug and the injection syringe, and the injection syringe and the pressure connection tube are formed at a time. During blood collection, the injection syringe sucks the liquid in the pressure connection tube, blood is sucked to the position of the blood collection plug, a blood taking needle punctures the blood collection plug and the blood is collected; after blood collection is finished, the liquid sucked out by the injection syringe is injected into the pressure connection tube, waste of the blood of the human body of avoided, and pulsating pressure produced during injection of the injection syringe can reduce the blood vessel blocking probability; meanwhile, no bloodstain is formed on the blood collection position, and therefore the blood infection probability of the patient is reduced; in addition, blood collection steps are simplified and the quantity of consumables is reduced.

The invention discloses a method for establishing a path in a wavelength division network, a communication node and a communication system. The method comprises that: a source node establishes a first path to a host node; the source node receives failure information from an intermediate node of the first path, wherein the failure information comprises the available wavelength information of an outgoing link of the intermediate node, and the outgoing link is not consistent in wavelength with an upstream link of the intermediate node on the first path; and the source node calculates a second path to the host node according to the available wavelength information of the outgoing link of the intermediate node. In the invention, in a service path establishment process, if discovering that the link does not have available wavelength resources, the intermediate node returns detailed available wavelength information causing path congestion to the source node. Therefore, the source node can calculates a new path by using the available wavelength information to reduce a service blocking rate.

The invention provides a spinning workshop dust collector. The spinning workshop dust collector comprises a dust suction device, a dust collection device and a power device. Fiber impurities in a spinning workshop can be prevented from entering a dust suction pipe to cause blockage by means of a sweeping connector and a cutting-off mechanism of the dust suction device. An anemograph in the dust collection device can detect the magnitude of wind power of the dust collector in real time and then judge whether overload operation is carried out or not. The fiber materials sucked into the dust suction pipe are filtered through a detachable coarse filtering part, and the fiber materials are prevented from entering an air inlet of the dust collection device. An overload protection circuit in the power device controls the operating state of a motor of the dust collector and avoids overload. According to the spinning workshop dust collector, the large fiber impurities sucked into the dust collector can be reduced, and the blockage probability is reduced; the coarse filtering part, an overload protection cavity and the overload protection circuit are arranged, the dust collector can be prevented from being in an overload work state for a long time, overheat burndown of the motor is avoided, and the problem that a motor of a traditional dust collector is easily damaged due to blockage is solved.