139results about How to "No blockage" patented technology

The invention discloses a method for purifying, energy saving and ventilating and a purification energy-saving ventilator, and particularly relates to a heat storage type heat exchanger which is used for ventilating indoors and outdoors for a building, and simultaneously purifying fresh air and recovering exhaust energy. The method is characterized in that heat exchange material in the heat exchanger is firmly fixed in a shell of the heat exchanger, and an air distribution mechanism is used for leading two paths of air to alternately pass through different parts of the heat exchange material of the heat exchanger in opposite directions; the heat exchange material is common air filtering cotton, and can exchange heat with air and prevent solid particles in the air from passing through when air passes through the heat exchange material, therefore the air can be purified during ventilation and exhaust energy recovery, and the functions of air disinfection and sterilization, humidification, temperature reduction and the like can be realized. The invention has the advantages of high heat exchange efficiency, simple and compact structure, small volume, low manufacturing cost and long service life, has multiple functions of energy recovery, air purification, humidification and temperature reduction, and provides an economic, efficient and easily popularized multifunctional fresh air ventilator for saving energy, ventilating and purifying air for commercial and household air conditioning rooms.

The invention relates to a micro-size permanent-magnet single-phase synchronous motor which comprises a stator and a permanent-magnet rotor which are same in pole number, wherein an AC (Alternating Current) power supply supplies electricity to the stator through the switch of a control circuit; an air gap is narrowed along a same peripheral direction under each pole so that the axial lines of the poles of the permanent-magnet rotor deflect an acute angle in a free state by taking the axial line of one closest pole of the stator as a reference; a linear magnetic position sensor is arranged on the peripheral preset position of the permanent-magnet rotor to detect the polarity and the position of the permanent-magnet rotor; the control circuit determines the axial direction of the permanent-magnet flux of various poles of the permanent-magnet rotor through the output of the linear magnetic position sensor by taking the peripheral preset position as the reference; and the control circuit detects the polarity of voltage which is supplied by the AC power supply to the stator to determine the axial directions of main fluxes generated at all the poles and control the half-waves of the AC power supply one by one according to a rotation direction set for the permanent-magnet rotor. The micro-size permanent-magnet single-phase synchronous motor disclosed by the invention can start and operate according to the preset rotation direction and is good in property and simple and reliable in control structure.

The invention discloses a power-free rainwater recycling system. The power-free rainwater recycling system comprises a waste flow water tank, wherein a centrifugal type rainwater separator is arranged at the upstream part of the waste flow water tank; one section of horizontal water inlet pipe is arranged in front of an inlet of the centrifugal type rainwater separator; a glass fiber reinforced plastic rainwater collection tank is arranged at the downstream part of the waste flow water tank. The process can be used for efficiently collecting rainwater; the power-free rainwater recycling system has a simple structure and is low in cost and easy to realize; the rainwater can be collected under the conditions of not using manpower and not consuming power; the special glass fiber reinforced plastic rainwater water collection tank is made of an environment-friendly material glass fiber reinforced plastic, and is industrially and wholly formed and produced in one step so that the power-free rainwater recycling system has good sealing performance and no leakage, and is acid-resisting and corrosion-resisting. An equipment overhauling opening is formed so that a worker can enter the inner part to overhaul and the construction is rapid; labor force and materials are saved; the treated rainwater can reach the standards and is recycled, and can be used as water for afforesting, vehicle washing, spraying, toilet flushing, landscapes and the like.

The invention discloses a metal mesh belt type electrostatic melt spinning device and technique, belonging to the field of electrostatic spinning. The device mainly comprises an extruder, a filter mesh, a melt metering pump, a feeding machine head, an infrared heater, an air knife, an airflow regulating valve, an air compressor, a metal mesh belt, a pored electrode plate, a high-pressure electrostatic generator, a mesh paving belt, a wind chamber, an exhaust fan, a hot rolling device and a winding device. According to the metal mesh belt type electrostatic melt spinning device and technique, even and thin-layer melts are directly coated on the surface of the metal mesh belt by adopting non-nozzle mesh belt design through a wide film or a plate machine head, the melts can form bulges on each fine mesh hole under the turbulence of auxiliary airflow, jet flow is formed under the drafting of lower high-pressure electric field force, single-layer non-woven fabric with the diameter of 500nm below can be manufactured, and multi-layer non-woven fabric with different diameters can also be prepared simultaneously in an online manner.

Provided is a porous hollow fiber membrane and a method for manufacturing same, the porous hollow fiber membrane being able to be used suitably in devices for processing various water-based fluids for use in applications such as water purification, drinking-water processing, and seawater clarification; having excellent fractionation characteristics and permeability with minimal decrease in performance over time; having excellent recovery in membrane separation characteristics by washing: and having excellent separation characteristics, filtration stability, and mechanical strength. The present invention is a porous hollow fiber membrane having a porous layer made of a thermoplastic resin in at least an outer surface and the vicinity thereof, the average pore diameter (Ad) at a depth of 1 [mu]m from the surface as seen in cross-section being no more than 0.6 of the average pore diameter (Bd) from a depth of 2 to 3 [mu]m, and a method for manufacturing said membrane.

The technological process of treating bank note gravure printing waste water includes supergravitational solid-liquid separation and ultrafiltering. The technological process is performed with ultrafilter, supergravitational centrifugal solid-liquid separator as the pre-treatment apparatus and other relevant apparatus. The said technological process can optimize the operation environment of theultrafilter and reduce the post-treatment of ultrafiltered concentrated liquid, and has high recovering rate of plate cleaning liquid and high system operation efficiency.

The invention discloses a degradable composite absorption core, a preparation method thereof and application of the degradable composite absorption core in paper diapers, and relates to the technicalfield of disposable hygienic products. The preparation method of the degradable composite absorption core comprises the following steps: preparing a composite polylactic acid fiber net, forming a polylactic acid superfine fiber net, compounding the polylactic acid fiber net, uniformly spraying super absorbent resin, uniformly distributing the super absorbent resin on the composite polylactic acidfiber net under the action of ultrasonic vibration, and the like. The super absorbent resin is prevented from being thermally damaged by adopting a method of firstly thermally reinforcing and then spraying the super absorbent resin, and the prepared composite absorbent core has a large number of pores, so that the utilization rate of the super absorbent resin is improved; the fiber layers of the composite absorption core are solidified into a whole through PLA/PLA fiber hot melting and polylactic acid superfine fiber self-adhesion, integrated processing of the fiber layers in the composite absorption core is achieved without using a non-degradable hot melt adhesive, and therefore the composite absorption core has high degradability and excellent product comprehensive performance.

The invention discloses a coal-fired unit coupling biomass power generation system and method. The coal-fired unit coupling biomass power generation system comprises a crushing mill, a conveyor, a hammer mill and a booster fan. An outlet of the crushing mill is connected to the input end of the conveyor, the output end of the conveyor is connected to a biomass powder inlet of the hammer mill, the hammer mill is further connected with a primary air bypass pipeline, and a biomass powder outlet of the hammer mill is connected to a primary powder pipe of the boiler through a biomass powder pipeline and the booster fan arranged on the biomass powder pipeline. The coal-fired unit coupling biomass power generation system and method are simple and efficient, large influences on the output of a unit coal mill in a co-grinding or forming blending combustion process is avoided, and the system investment of an independent spraying combustion process and the transformation influence on a boiler can also be reduced.

The invention provides a wind and water combined slag cooler for a fluidized bed. The wind and water combined slag cooler is mainly used as a bottom slag cooling and discharging device for a boiler ofa circulating fluidized bed. Coking and slag blocking phenomena of the slag cooler for the fluidized bed are eliminated, the operation of the wind and water combined slag cooler is not limited by theparticle size of bottom slag, and slag inlet and outlet control is simple and convenient. First, a material discharge opening or an accident slag discharge opening is not formed in a slag inlet high-temperature area of the slag cooler in any forms, a whole wind-distribution plate is complete and uniform from a slag inlet to a slag outlet, and only one slag outlet is formed to prevent the coking phenomenon due to a bad fluidizing effect of the high-temperature area; second, wind caps are arranged in a crossed manner in the wind-distribution plate, small holes in the wind caps are inclined downwards by a certain angle, and the diameters of the small holes of the wind caps are 6-8 mm; third, the interior of the slag cooler is a complete cavity, and is not divided by a partition wall; fourth,wind control is adopted in the aspect of slag inlet control, and a slag inlet pipe section connected with the slag cooler forms an inclined angle of 14-25 degrees with the horizontal plane; and fifth, a water-cooled wall is prevented from being worn by a wear-resistant sheet, and spraying is performed on scenes to resist wear.

The invention relates to a ball screw high-speed mute structure which comprises a fixing base, a screw axle, at least two opposite ball ring, a sealing sheet, and an annular sheath. Wherein, said fixing base has a through inner hole in the center; the inner hole has a screw groove; at least a couple of hollow grooves are arranged at the fixing base; the ball ring along the hollow groove is arranged into the inner hole to make the ball rings cover the outer surface of screw axle with full circumference; the ball ring in ellipse shape to avoid jam of ball to realize the mute function in high speed rotation of screw axle.

The invention relates to sewage treatment filler which comprises resin, a dispersant, an antioxidant, a lubricant, a light stabilizer, a plasticizer, a flame retardant, a flexibilizer and a metal deactivator. The filler provided by the invention is of a honeycomb structure formed by a plurality of corrugated thin plates. The filler provided by the invention is free of problems of blockage and breakage and is long in service life. The filler as a macromolecular biological material is fast in biofilm culturing speed and high in adaptability to water quantity. The filler is a honeycomb living body. Beside biofilm culturing, the filler can be also used as a carrier for inclined plate settlement. An aeration tank and a settling pond are constructed in a combined manner, and a secondary sedimentation tank is reduced, so that the whole sewage treatment system is more compact, and the space and cost are lowered.

The invention discloses a kitchen waste pipe chain transmission line and a kitchen waste treatment system using the kitchen waste pipe chain transmission line. The kitchen waste pipe chain transmission line comprises a conveying pipeline, a kitchen waste conveying pipe chain and at least one kitchen waste conveying pipe chain driving mechanism, the conveying pipeline is provided with at least onefeed inlet and at least one discharge outlet, the kitchen waste conveying pipe chain is arranged in the conveying pipeline and moves in the conveying pipeline, and the kitchen waste conveying pipe chain conveys the kitchen waste entering the conveying pipeline from the feed inlet to the discharge outlet, and the kitchen waste conveying pipe chain driving mechanism is arranged in the conveying pipeline and drives the kitchen waste conveying pipe chain to move in the conveying pipeline. The kitchen waste pipe chain transmission line has the beneficial effects that full-closed transmission is realized, the transmission length is long, horizontal or vertical transmission can be realized, the transmission capacity can be adjusted according to the pipe diameter, the speed and the chain disc distance, no blockage exists, and the energy consumption is low.

The invention discloses a sampling knife for food detection. The sampling knife comprises a sampling pipe, an inner pipe body, a semicircular baffle, a motor, a protective shell, a vibration motor, anairflow pipeline, an air pump, sampling holes and a rubber pad; the lower end of the sampling pipe is in threaded connection with a sampling probe; and an annular groove is formed in one side of theupper end of the sampling pipe. A traditional sampling knife needs to be shaken manually, as a result, the puncture hole of a bag container is apt to be enlarged, and cereal outflows. In order to solve the problem in the prior art, a vibration motor is adopted; the vibration motor vibrates to drive the whole sampling knife to vibrate, so that a cereal sample can smoothly flow into the sampling pipe, and will not be jammed; a motor drives a gear to rotate; the gear is meshed with a rack ring so as to rotate a rotary disc to rotate, so that the semicircular baffle can be driven to rotate to sealthe sampling holes; and with the above structure of the sampling knife for food detection of the invention adopted, the sample is effectively prevented from flowing out; and meanwhile, when the sampling knife is not used, the sampling holes can be sealed, so that external impurities are prevented from entering the sampling pipe.

The invention discloses a thermosensitive high-performance polyurethane adhesive convenient for construction. The thermosensitive high-performance polyurethane adhesive comprises a component A and a component B, wherein the component A is prepared from the following components in parts by weight: 40 to 60 parts of polyol resin, 0.2 to 0.8 part of a diazabicyclo compound, 0.2 to 0.8 part of a compound containing hydroxyl and/or carboxyl, 40 to 50 parts of a filler, 1 to 3 parts of a lubricant and 0.5 to 2 parts of a coupling agent; and the component B is isocyanate of which the isocyanate functionality is greater than or equal to 2. The obtained polyurethane adhesive shows good mechanical properties and bonding strength, the active period and the opening time of the adhesive can be remarkably prolonged, the process error-tolerant rate is high, the gun head blockage condition does not occur after shutdown, and continuous production can be achieved; and meanwhile, the surface is smooth and free of air holes through naked eye observation after gluing is conducted for 1 min. Besides, the polyurethane adhesive is good in leveling time and curing time matching, good in leveling property and ductility, capable of being used for spraying, curtain coating and other processes besides the traditional use mode of the adhesive, and extremely high in actual popularization significance.

The invention belongs to the field of power exoskeletons, and relates to an exoskeleton device and an exoskeleton motion control method. The exoskeleton device comprises a foot component, and the foot component and a shank are connected through an underactuated freedom degree with a sagittal plane; the foot component includes: a sole plate for contacting the ground; two side plates arranged on the two sides of the sole plate respectively, wherein an energy buckle is arranged on one side plate, and a bandage is installed on the other side plate; the energy buckle can be buckled with the bandage; an infrared sensing device arranged in one side plate and used for detecting whether the sole plate is in contact with the ground or not; a photoelectric sensor arranged in one side plate and used for detecting the motion state of the sole plate; a foot IMU arranged in one side plate and used for detecting the motion state of the human body where the exoskeleton device is installed. According to the technical scheme, the problem that in the prior art, a pressure sensor is prone to problems in the frequent use process is effectively solved.