285results about How to "Fall fast" patented technology

Disclosed are devices for urine voiding postponement, and methods for treating conditions such as central diabetes insipidus, enuresis, nocturia, urinary frequency or incontinence. The devices deliver a desmopressin flux through the skin of a patient in a low dose amount just necessary to achieve a desired anti-diuretic effect without undesirable side effects such as hyponatremia. The devices are designed to permit a state of normal urinary production to return quickly after the desmopressin flux is terminated.

A power conversion circuit improves lamp operating life and lamp efficiency by driving a fluorescent lamp with a square wave signal. The square wave signal is an alternating current signal with relatively fast transition times. The square wave signal advantageously reduces lamp current crest factor for more efficient operation of the fluorescent lamp.

The invention relates to an additive, especially relates to an additive used for limestone-gypsum method flue gas desulfurization. The technical problem solved by the invention is in order to provide an additive capable of preventing desulfurization absorption tower scaling, and slurry overflowing, avoiding demister blockage, and improving desulfurization efficiency. In order to solve the above problem, the technical proposal taken by the invention adopts organic acid substance 30-70, metal oxide 10-30, salt substance 5-20, oxidation catalyst 15-35, and antifoaming agent 5-15. The technical proposal has obvious effect in defoaming, scaling reduction, demister blockage, slurry overflowing prevention, and desulfurization efficiency improvement.

A high-temperature and aerobic composting method for solid wastes which adopts a vertical ventilation device relates to a high-temperature and aerobic composting method for the solid wastes. The composting method aims at solving the problems that in the aerobic fermentation process, the conventional bottom ventilation method causes obvious uneven fermentation at the upper part and the lower part of a stacking body in a fermentation device, thus quality stability and uniformity of the fermented product are affected. In the composting method, middle air distribution pipes are fixed in a fermentation tank arranged at the lower side of an inverted ventilating slot; both the bottom part and the middle part of the fermentation tank adopt intermittent ventilation type, the ventilation time is 5-30 minutes, intermittent time is 15-120 minutes and ventilation rate is 0.03-2m<3>/(min m<3> mixing materials). The composting method increases the contact area between air and materials; air direction forms a reverse rotational flow, which increases residence time of fresh air in the fermentation device, thus improving the mass transfer efficiency, and the operational cycle of a single fermentation is shortened by over 1/4.

The invention discloses an ultra broadband mobile communication radome based on an antenna-filter-antenna array. The radome is a periodic frequency selection surface which is mainly formed by a plurality of same period unit structure arrays. Each period unit is mainly formed by upper and lower layers of dielectric layers, upper and lower layers of circular ring metal patch layers and a metal slit layer between the two dielectric layers. An electromagnetic field in a space hits the radome and successively passes through three layers of selective filtering of an upper layer metal layer, the metal slit layer and a lower layer metal layer, and then the electromagnetic field with a needed frequency range is output from the lower layer metal layer and clutter energy can be greatly restrained. The radome is suitable for the design of the ultra broadband mobile communication radome. A passband width is large, in-band insertion losses are small and are stable, and frequency selectivity performance is good. The radome has a great application value in the fields of mobile communication, a radar and the like.

The invention relates to an aerial working device. A mast climbing type aerial working platform comprises a vertical tower assembly and a platform assembly, the vertical tower assembly is composed of a top cap and a plurality of standard knots of frame structures, the standard knots are in fixed connection, the standard knots are fixedly and detachably connected with a connection frame and the top cap, sides of the connection frame and the standard knot are respectively provided with teeth bars, the teeth bars are connected with each other to compose a tooth-shaped rail; a mounting rack is mounted on the platform assembly, the vertical tower is arranged through the mounting rack, rolling wheels are arranged on the mounting rack, the rolling wheels and the standard knots are pasted rollingly, a fixed plate is fixedly arranged on the mounting rack, a motor and an anti-drop gear are respectively engaged with the teeth bars. The invention extends the range of the platform surface, the standard knots can be added unlimitedly, the lifting height of the platform surface can be extended, the invention has characteristics of large working range, high lifting height, safety and reliability.

The invention discloses a micro-flow controller based on the peltier effect. The controller comprises a flow restrictor, a gas inlet, a gas outlet, at least one peltier semiconductor device and at least one heat sink. Gas enters the flow restrictor from the gas inlet, after a flow restriction effect is achieved, micro-flow of propellant flows out from the gas outlet, and the flow restrictor and the heat sink are respectively arranged on two faces of a peltier semi-conductor device. By charging the peltier semi-conductor device with electricity and controlling the peltier semi-conductor device, active heating, active cooling and insulation operation can be carried out on the flow restrictor, so that the flow restrictor can fast regulate and stabilize flow of the gas in a large range. Compared with a common micro-flow controller subjected to heating wire active heating and power-off passive cooling, the micro-flow controller carries out active heating and active cooling on the flow restrictor, expands the regulating range of the flow restrictor, and improves regulating speed of the flow restrictor. Efficiency of the peltier semi-conductor device is higher than that of the heating wire during heating.

An inverter includes an input inverter having a high-resistance load and a first transistor and an output buffer including second and third transistors coupled in series. A power supply voltage is provided to satisfy an inequality VDD1>VDD2+Vth where VDD1 is the power supply voltage of the input inverter, VDD2 is the power supply voltage of the output buffer, and Vth is the threshold voltage of the transistors. Use of the high-resistance load allows an output waveform to rise and fall quickly, as well as reduces current consumption.

The invention provides a water logging and air cooling combined passive containment cooling system and method. The system is completely self-started, free of intermediate control procedure and high in reliability. The is characterized by comprising a cooling pool and an air flow guide cover, wherein the cooling pool can submerge a containment, the air flow guide cover is arranged at the outside of the containment in the cooling pool, the air flow guide cover is provided with a surrounding part surrounding the containment, and a flow guide part located above the top part of the containment and extending to the atmosphere, the surrounding part and the flow guide part are connected into an entirety, the cooling pool is provided with an air inlet, and the air inlet of the cooling pool, the surrounding part of the air flow guide cover and the flow guide part form an air flow passage with a chimney effect.

The invention relates to a main working auxiliary machine for a textile machinery setting machine, and discloses a waste heat exchange device for a textile setting machine. The device comprises a plurality of fin heat pipes (4) which are vertically arranged, and the upper and lower ends of the fin heat pipes are communicated with container connecting pipelines (9) to form heat transfer rows; and a plurality of heat transfer rows are arranged in parallel, an upper container (6) and a lower container (11) are communicated and connected to form a rectangular heat transfer body, and a middle pipe plate (3) divides the rectangular heat transfer body into an upper half heat transfer body and a lower half heat transfer body. Upper and lower guide plates (18) vertically divide a heat absorption layer and a heat release layer respectively, and an air inlet, an air inlet passage, a turning passage, an air outlet passage and an air outlet are formed on each layer surface respectively; and a working substance down pipe (5), a liquid filling port (7) and a working substance discharge port (12) are arranged between the upper and lower containers. The invention provides the scheme of vertically arranging the fin heat pipes (10) for the first time, so the heat absorption and heat release of the device are more sufficient and the effect is better; the device is more favorable for phase state conversion for the medium in the fin heat pipes; and the heat exchange device for the setting machine is convenient to maintain, and the medium is convenient to change.

The invention relates to an engineering machinery movable arm potential energy variable amplitude energy recovery device which comprises a movable arm oil cylinder, a pressure sensor, a balance valve, a two-position two-way electromagnetic valve, overflow valves, a three-position four-way electromagnetic reversing valve, one-way valves, a hydraulic pump, a motor, an oil tank, an energy accumulator, a proportional flow valve and a controller. The motor is in mechanical transmission connection with the hydraulic pump. The hydraulic pump is connected with the oil tank and the one-way valves. The three-position four-way electromagnetic reversing valve is connected with the one-way valves, the oil tank, the movable arm oil cylinder and the balance valve. The balance valve is connected with a large-cavity oil port of the movable arm oil cylinder and the two-position two-way electromagnetic valve. The two-position two-way electromagnetic valve is connected with the three-position four-way electromagnetic reversing valve. The first overflow valve is connected with the three-position four-way electromagnetic reversing valve. The proportional flow valve is connected with the one-way valves. A proportional flow valve oil port is connected with the one-way valve. The third one-way valve is connected with the fourth one-way valve and the energy accumulator. The second overflow valve is connected with the one-way valves and the oil tank. The energy recovery device has the advantages of saving energy, recovering variable amplitude energy and being fast in dynamic response.

The invention discloses a sieve-plate tower used for sintering machine flue gas desulfurization and a desulfurization process thereof, and belongs to the field of resource and environment protection. The device comprises an absorption tower, wherein the absorption tower is provided with a flue gas inlet, a flue gas outlet and a desulfurizer inlet, a demisting layer, a spraying layer, a sieve plate and a pulp chest are sequentially arranged in the absorption tower from top to bottom, the desulfurizer inlet is positioned above the flue gas inlet, the sieve plate is positioned between the desulfurizer inlet and the flue gas inlet, an overflow weir is arranged above the sieve plate, the sieve plate is divided into an overflow area and a gas liquid contact area by the overflow weir, sieve pores of the sieve plate are arranged in the gas liquid contact area, the gas liquid contact area is positioned at one side of the sieve plate close to the desulfurizer inlet, and an overflow pipe is arranged under the overflow area. The desulfurization process comprises the following steps that: sintering machine flue gas enters the absorption tower to be reacted with the desulfurizer at the gas liquid contact area and then is discharged after sulfur dioxide is removed, and desulfurized pulp generated by the reaction of the flue gas and the desulfurizer overflows into the pulp chest of the absorption tower. The invention is used for removing the sulfur dioxide in the sintering machine flue gas, the flue gas desulfurization efficiency is improved, and the desulphurization energy consumption is reduced.

This invention relates to a micro-hole rubber hollow glass spacing strip used in hollow glasses composed of rubber, curing agent and aids characterizing that said rubber is composed of EPT rubber and molecular sieve activation powder with the following weight percentage: EPT rubber 100 portions, activation powder 80-200 portions.

A light emitting diode driving device for driving an LED includes (i) a driving pulse current generating circuit for generating a driving current for the LED in accordance with a driving pulse signal supplied from outside and (ii) a differentiating circuit for generating a peaking current obtained by differentiating the driving pulse signal. A current that is equal to the sum of the driving current and the peaking current flows to the LED. The light emitting diode driving device further includes a peaking control circuit for controlling the magnitude of the peaking current generated from the differentiating circuit.

The invention discloses a bucket shaft double-rotating type efficient stirring and crushing device comprising a device body. The device body is mainly composed of a base, side plates and a stirring and crushing bucket; the two ends of the base are fixedly connected with the side plates; a rotating shaft is rotatably connected between the side plates; an electric lifting device body is fixedly connected on the rotating shaft; the bottom of the electric lifting device body is connected with a mounting frame; a double-shaft motor is fixedly connected inside the mounting frame in a bolt fixing mode; rotary shafts are connected at the two ends of the double-shaft motor; sleeving and connecting pieces are arranged on the rotary shafts; supporting frames are fixedly connected at the bottoms of the sleeving and connecting pieces; and the stirring and crushing bucket is arranged at the bottoms of the rotary shafts. The bucket shaft double-rotating type efficient stirring and crushing device is high in applicability, the stirring and crushing bucket moves along with the rotating shaft, and thus the crushing efficiency of materials is improved; the crushed materials and the non-crushed materials are separated, and thus the crushing effect of the materials is improved; and in the using process of the crushing and stirring bucket, the tilt angle of a second stirring rod can be changed, the crushing efficiency in the stirring and crushing bucket is improved, and the crushing effect of the materials is enhanced.

The invention discloses a drive circuit of a silicon carbide semiconductor field effect transistor. The drive circuit comprises a PWM control circuit, a drive signal amplification circuit, a turn-offcircuit, a gate shunt circuit and a current change rate control circuit, wherein the gate shunt circuit is switched on when the turn-off circuit works to perform shunt of the gate current of a SiC MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) and accelerate the switch-off of the SiC MOSFET; the SiC MOSFET is switched off when the drain-source voltage of the SiC MOSFET is increased toa preset value; the current change rate control circuit is switched off when the drain-source voltage of the SiC MOSFET is increased to the preset value to reduce the leakage current change rate. Thegate shunt circuit is arranged to perform shunt of the gate output current in the SiC MOSFET switch-off process and speed up the decreasing speed of the gate-source voltage so as to improve the switch-off speed of the SiC MOSFET; and besides, in the switch-off process of the SiC MOSFET, the switch-off of the current change rate control circuit reduces the leakage current change rate so as to reduce the voltage peak when the SiC MOSFET is switched off, the two circuits cooperatively act to achieve the voltage reduction speed and the low-voltage peak of the high gate-source voltage and ensure the safety operation of the SiC MOSFET.

The invention provides the technical scheme of a hydraulic excavator movable arm potential energy recovery system. The scheme also comprises two main control oil cylinders and an auxiliary oil cylinder which are used for driving a movable arm to move, wherein the auxiliary oil cylinder is arranged in parallel with the two main control oil cylinders; cylinder rods of the two main control oil cylinders and a cylinder rod of the auxiliary oil cylinder synchronously move; a hydraulic pump is communicated with rod cavities and rodless cavities of the two main control oil cylinders and a rod cavity of the auxiliary oil cylinder by a second reversing valve; and a rodless cavity of the auxiliary oil cylinder is communicated with an energy accumulator. According to the invention, the potential energy produced when the auxiliary oil cylinder descends can be recovered in the energy accumulator; the energy accumulator releases the stored potential energy when the movable arm ascends; and compared with the prior art, the whole hydraulic system has the advantages that the energy consumption is greatly reduced; heating is reduced; and the reutilization of energy is realized.