37results about How to "Fast flow rate" patented technology

The invention discloses a urea mixing device. A partition is arranged between a front housing and a rear housing, a breaking plate is fixed to the partition, a front baffle is arranged on the front end part of the partition, an opening is formed in a part corresponding to the partition, of the front baffle, a flow guide plate and a hole plate are arranged on the opening, and an intake port is formed between the flow guide plate and an inner wall surface corresponding to the front housing; a blade opened inwards and towards an injection cavity is formed in the flow guide plate; a plurality of first through holes are formed in the hole plate; grating openings are formed in a wall surface facing the breaking plate, of the partition; and the rear housing is provided with a waist-reducing part.According to the urea mixing device, the plurality of grating openings are formed in the part facing the breaking plate, of the partition, and play a role of secondary breaking on urea drops, and more thorough atomization and volatilization for the urea drops are ensured, so that adequate mixing for mixed gas flow is much benefited, and higher mixing uniformity is achieved. The rear housing is provided with the waist-reducing part, and the flowing speed of the mixed gas flow while passing through the waist-reducing part, is increased, so that a better mixing effect and higher mixing uniformity are achieved.

The invention relates to a radial flow chromatographic separation and purification method for biological polysaccharide, which comprises the following steps of: centrifuging a medical fungi liquid fermentation product or a mycelium (fruiting body) enzymolysis product and collecting supernatant or collecting supernatant which comprises polysaccharide and is extracted from plants, animals, bacteriaand yeast; directly loading the supernatant on a macroporous resin radial chromatographic column of 500ml at the flow rate of 60 to 120ml per minute; eluting the macroporous resin radial chromatographic column by using distilled water or deionized water at the flow rate of 50 to 200ml per minute; and collecting 500 to 800ml of eluent, namely solution containing purified polysaccharide. The polysaccharide is directly separated and purified from the enzymolysis supernatant and the fermentation supernatant of the medical fungi mycelium and the supernatant extracted from the plants, animals, bacteria and yeast by a one-step method; and the biological polysaccharide separation and purification method has the advantages of simple process, convenient operation, no use of an organic solvent, highproduction efficiency and obvious purification effect.

The invention discloses a river cross section multipoint flow-measuring method based on fixed points. The method is implemented based on a radar flow-measuring meter which is fixedly installed above a river. The method comprises the steps that the altitude H of the place where the radar flow-measuring meter is located and the perpendicular distance w between the radar flow-measuring meter and the river cross section to be measured are obtained through measurement; the distance between each measuring point and the datum point O on the river cross section is obtained through measurement; flow measurement is conducted on all the measuring points in sequence, wherein before the flow velocity of each measuring point is measured, the horizontal orientation of the radar flow-measuring meter is adjusted first, and then the perpendicular dip angle of the radar flow-measuring meter is adjusted, so that the detection direction of the radar flow-measuring meter is right opposite to the measuring point, and flow measurement is conducted. The river cross section multipoint flow-measuring method is only based on one radar flow-measuring meter, and multipoint flow-measuring operation can be realized at multiple measuring points on the same river cross section just through adjustment of the horizontal orientation and the perpendicular dip angle of the radar flow-measuring meter.

The invention discloses a rapid cooling device for an injection mold. The rapid cooling device comprises a cooling base, wherein a lower mold is clamped in the cooling base, an upper mold is placed onthe outer wall of the top of the lower mold, a motor is installed on one side of the outer wall of the top of the cooling base through bolts, the output end of the motor is provided with a first shaft rod located in the cooling base through bolts, fixing bases are installed on the inner walls of two sides of the cooling base through bolts, and the bottom end of the first shaft rod is rotationallyconnected to the outer walls of the tops of the fixing bases through bearings. According to the rapid cooling device, the shaft rod can drive stirring blades to stir cold water in the cooling base, so that the flow rate of the cold water is higher, then the lower mold can be cooled more quickly, and therefore, the working efficiency is improved; and hot water in the cooling base can be recycled into a heat dissipation box for heat dissipation, heat is brought out of the heat dissipation box through heat dissipation fins, the hot water can be cooled, and the water can be repeatedly used.

The invention discloses a heated air circulation drying kiln for non-dismantling heat insulation formworks. The heated air circulation drying kiln comprises a kiln body. At least two layers of carrier rollers are mounted in the kiln body. The carrier rollers are mounted horizontally and are perpendicular to the kiln body. The carrier rollers are equidistantly mounted from one end of the kiln body to the other end of the kiln body. The distance between each upper carrier roller and the corresponding lower carrier roller is larger than the thickness of the non-dismantling heat insulation formworks. The carrier rollers are driven by motors. The top of the kiln body is provided with a heated air inlet and a waste air outlet. A natural gas heater is connected to the heated air inlet. A natural gas pipeline and an air oxygen supply pipeline are connected to the natural gas heater. A circulating fan is mounted on the natural gas heater. A heat exchanger is connected to the waste air outlet. An air inlet fan is connected to an air inlet of the heat exchanger. An air outlet of the heat exchanger is connected with the air oxygen supply pipeline. A waste air discharge outlet of the heat exchanger is connected with a chimney. According to the heated air circulation drying kiln, the non-dismantling heat insulation formworks are conveyed through the carrier rollers; the drying effect is good; the drying efficiency is improved through the multiple layers of carrier rollers; and the heat exchanger increases the utilization rate of heat through natural gas burning drying.

The invention discloses a hot air drying kiln for non-dismantling heat insulation formworks. The hot air drying kiln comprises a kiln body with openings at the two ends, wherein at least two layers of rollers are installed in the kiln body, are horizontally installed, are vertical to the kiln body and are equidistantly installed from one end of the kiln body to the other end of the kiln body; the space between the upper and lower adjacent rollers is more than the thickness of the non-dismantling heat insulation formworks; the rollers are driven by motors; a hot air inlet and a waste gas outlet are formed in the top of the kiln body; the hot air inlet is connected with a natural gas heater; the natural gas heater is connected with a natural gas pipeline and an air oxygen supply pipeline; a circulating fan is installed on the natural gas heater; the waste gas outlet is connected with a chimney. The hot air drying kiln has the beneficial effects that the non-dismantling heat insulation formworks are conveyed by the rollers and have large drying areas in the kiln body; the flow rate of hot air is high, so that the drying effects are good; multiple layers of rollers can be used for simultaneously conveying the non-dismantling heat insulation formworks, thus greatly improving the drying efficiency; the hot air generated through natural gas burning is pollution-free and thus can not affect the non-dismantling heat insulation formworks.

The invention belongs to the technical field of hydraulic tools, and particularly relates to a hydraulic tool one-way valve and a hydraulic tool. The one-way valve comprises a valve seat and a valve body which are fixed in a valve hole and a valve core and a spring which are arranged between the valve seat and the valve body, the spring abuts against the valve core and the valve body, and the plane of the upper end of the valve core and the lower end face of the valve seat abut and form a first sealing face under the elasticity of the spring; a plurality of overflowing holes are uniformly distributed in the bottom of the valve body, when the upper end face of the valve core is separated from the lower end face of the valve seat, the overflowing holes are communicated with the through hole,and mediums in the through hole flows out from the overflowing holes. According to the one-way valve, the shape of the valve core is changed, plane sealing is adopted by the part between the valve core and the valve body, the sealing performance of the one-way valve is greatly improved by matching with the reduced sealing contacting face between the valve core and the valve body, and the oppositeposition oil returning of the one-way valve in the working process is prevented.

An analytical device, in particular, a paper analytical device (PAD), for detection of at least two chemical components indicative of a low quality pharmaceutical product is provided. The analytical device can include a porous, hydrophilic medium, at least two assay regions associated with the porous, hydrophilic medium, at least one assay reagent or precursor thereof in the assay regions, and at least one optically readable information zone.

The intelligent double-rocker gamepad relates to the technical field of gamepads and comprises a shell, a ventilation opening is formed in the shell wall of the holding position of the shell, a first motor is fixedly connected to the inner wall of the shell, a circulation pipe is fixedly connected to an output shaft of the first motor, and an air outlet is formed in the surface of the circulation pipe; the conveying part is used for conveying air into the circulating pipe in a pressurizing manner, the adjusting part is used for adjusting the pressurizing force of the conveying part, the conveying part comprises a barrel fixedly connected to the end face of the circulating pipe, and the inner wall of the barrel is fixedly connected with at least two piston barrels. Air circulation at the handle holding position is promoted, it is avoided that sweat stains appear in the palm when a user holds the handle for a long time, then the comfort effect of the user is improved, due to the fact that the palm sweats more easily when the grip strength of the palm is increased, the palm is further prevented from sweating in the mode that the air flowing rate is increased in a self-adaptive mode, and the user experience is improved. And the use comfort of the user is improved.

The invention discloses an intelligent double rocker game handle, which relates to the technical field of handles. The circulation pipe has an air outlet on the surface of the circulation pipe, and also includes a conveying part for pressurized conveying air into the circulation pipe, and an adjusting part for adjusting the pressure force of the conveying part. The conveying part includes a cylinder fixedly connected to the end face of the circulation pipe. The inner wall of the cylinder body is fixedly connected with no less than two piston cylinders. The present invention promotes the air circulation at the grip of the handle, avoids sweat stains on the palm of the user when the user holds the handle for a long time, thereby improving the comfort effect of the user, and because the grip of the palm increases, the palm of the hand is more likely to sweat, so the present application By adaptively increasing the air flow rate, it can further avoid palm sweating and improve the user's comfort.

The invention relates to a catalyst for preparing carbon monoxide by decomposing carbon dioxide, which is a composite metal oxide obtained by doping Mg and Ca in a cerium-zirconium solid solution. The chemical composition of the catalyst is expressed by the following general formula: Ce0.8-xZr0.2MxO2-x, wherein x equals 0.02-0.1, M is doping metal Mg or Ca, and x is the molar fraction of the doping metal. The catalyst disclosed by the invention has the advantages of high activity, high thermal stability and long service life.

The invention discloses a making method of 5'-nucleic acid from enzymolytic liquid of ribonucleic acid, which comprises the following steps: predisposing enzymolytic liquid of ribonucleic acid; adopting ionic exchange to separate and purify four nucleic acids; condensing; spraying; drying to obtaining the product.

The invention discloses a heat dissipation back clamp which comprises a back clamp main body (100) and a heat dissipation mechanism (200), the heat dissipation mechanism (200) is arranged on a first side of the back clamp main body (100), and a mounting space (110) for accommodating electronic equipment is formed in a second side of the back clamp main body (100); the heat dissipation mechanism (200) comprises a cover body (210), a fan (220), an air volume adjusting mechanism (230) and a first driving mechanism, the cover body (210) is arranged on the first side of the back clamp body (100), the cover body (210) and the back clamp body (100) form a containing space, the fan (220) is arranged in the containing space, and the cover body (210) is provided with a ventilation hole. The air volume adjusting mechanism (230) is arranged on the ventilation hole, and the first driving mechanism is connected with the air volume adjusting mechanism (230). The first driving mechanism can drive theair volume adjusting mechanism (230) to move so as to adjust the opening degree of the ventilation hole. According to the scheme, the problem that the heat dissipation efficiency of the heat dissipation back clamp is not ideal due to the fact that foreign matter invades easily can be solved.

The invention provides a direct-current micro-grid communication-free current sharing method based on a virtual generator, which is applied to a virtual direct-current generator structure, the virtual direct-current generator structure comprises a plurality of power supplies arranged in parallel, and any power supply is connected to a direct-current bus through a bidirectional DC / DC converter. A line impedor is arranged between the DC / DC converter and the DC bus; the method comprises the steps that armature electromotive force in virtual direct-current generator structure control is fed forward to a voltage control link to enable the armature electromotive force to be kept at a constant value in a steady state, so that the droop effect of virtual impedance is recovered, and current adjustment is achieved. According to the method, the accurate distribution of the load current can be realized while the operation stability of the system is improved, and communication between the converters is not needed during adaptive adjustment of the virtual impedance in the method.

The invention discloses a voltage surge protection device and a manufacturing method thereof. The voltage surge protection device includes a substrate of a first conductivity type, a first base area of a second conductivity type which extends into the substrate from the first surface of the substrate, a second base area of the second conductivity type which is opposite to the first base area and extends into the substrate from the second surface of the substrate which is opposite to the first surface, a plurality of first emission areas of the first conductivity type which extend into the first base area from the first surface of the substrate, and a plurality of second emission areas of a first conductivity type which extend into the second base area from the second surface of the substrate, wherein the first emission areas and the second emission areas are arranged in a staggered manner, and the first conductivity type and the second conductivity type are complementary. The voltage surge protection device provided by the invention can provide forward and reverse surge protection. The voltage surge protection device has the advantages of balanced forward and reverse surge protection abilities, high current discharge speed and small size.

The invention relates to an automatic production system for steamed buns and its production process, comprising an oven body, a baking channel provided in the oven body and having a discharge port and a material intake port, a humidity adjustment door provided on the oven body, The heating module arranged in the baking channel and the conveying device arranged in the baking channel and used to transport the baked goods are characterized in that: the conveying device divides the baking channel into a baking zone and a preheating zone; The heating module includes several heating parts arranged in the baking area and arranged at intervals along the conveying direction of the conveying device to heat the baked goods, several heating parts arranged in the preheating region and arranged in the conveying direction of the conveying device The preheating section arranged at intervals to preheat the conveying device and the temperature sensor used to control each heating section and the preheating section and to detect the temperature in the baking zone or the preheating zone; the beneficial effect of the present invention: the steaming effect is good , and rationalize the distribution of resources to improve utilization.

The invention provides a hydraulic one-way valve, and belongs to the technical field of valves. The hydraulic one-way valve solves problems that the existing one-way valve is unstable in use, and generates vibration and noises. The hydraulic one-way valve comprises a main body with a through hole running inside as well as a valve element and a spring, wherein the valve element and the spring are arranged in the through hole; the inner side wall at the front end of the main body is provided with a ring-shaped sealing surface; the inner side wall at the rear end of the main body is provided with a convex shoulder; the valve element is arranged between the convex shoulder and the sealing surface; the spring is arranged between the convex shoulder and the valve element, and under the action of elastic force of the spring, the valve element can resist against and can form seal with the sealing surface; the inner side wall of the main body can limit the valve element in the radial direction and can enable the valve element to move along the axis of the main body all the time; and a flow-passing channel which is communicated with the front side and the rear side of the valve element when the valve element is separated away from the sealing surface is further arranged inside the main body. The hydraulic one-way valve disclosed by the invention is high in using stability and sensitivity, and capable of lowering vibration and noises.

The invention discloses a coagulation detection chip which comprises a micro-channel, wherein the micro-channel comprises accommodating cavities for accommodating red blood cells, accommodating cavities are distributed in a spatial array, and a communication channel which can be used for red blood cells to pass through and simultaneously plays a role in blocking the flow of the red blood cells isarranged between two adjacent containing cavities; one end of the micro-channel is provided with a first blood sample introduction cavity, and the other end of the micro-channel is provided with a collection cavity for collecting plasma; and a second blood sampling cavity communicated with the collection cavity is arranged on the collection cavity. The invention also discloses a blood coagulationdetection method which is characterized by comprising the following steps of: 1) dripping a first blood sample into the first blood sample introduction cavity, separating red blood cells and plasma ofthe first blood sample by utilizing a microchannel, and stacking the separated plasma in the collection cavity; 2) dripping a second blood sample into the second blood sample introduction cavity whenthe blood plasma fills the collection cavity, and entering the second blood sample into the collection cavity; 3) detecting a coagulation reaction between the first blood sample and the second bloodsample.

The invention discloses a mechanically sealed magnetic filter for a nuclear power feedwater pump, which comprises an overflow cylinder body and a cylindrical filter fixed at the end of the overflow cylinder body and arranged in a Y shape with the overflow cylinder body; The inlet of the filter extends into the inside of the flow cylinder and is fixed by the connecting sleeve. The center point of the inlet of the cylindrical filter coincides with the central axis of the inner diameter of the flow cylinder; the inside of the cylindrical filter Install the ring-shaped filter cover, there is an installation gap between the filter cover and the inner wall of the cylindrical filter; the inner middle of the cylindrical filter is installed with a mounting rod that is axially consistent with the cylindrical filter, and the magnet ring is fixed at intervals on the mounting rod . The invention adopts a Y-shaped structure with an angle of 45 degrees, which is simple to manufacture and easy to replace the filter element; the Y-shaped structure is adopted, which is convenient for installation and has a large dirt holding capacity; the filter element adopts a cylindrical structure, and the flow rate is fast; the filter element is equipped with NdFeB high High-strength magnets can more effectively remove iron products in the filter.